CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present patent application claims priority to Chinese Patent Application No.
201720847324.8, filed on July 13, 2017 and titled as "HEAT EXCHANGE TUBE, COLLECTOR PIPE, HEAT EXCHANGER AND COOLING SYSTEM",
Chinese Patent Application No.
201721651225.9, filed on December 1, 2017 and titled as "HEAT EXCHANGER AND HEAT EXCHANGE SYSTEM", Chinese Patent Application
No.
201721652081.9, filed on December 1, 2017 and titled as "HEAT EXCHANGER AND HEAT EXCHANGE SYSTEM", Chinese Patent Application
No.
201820012849.4, filed on January 4, 2018 and titled as "HEAT EXCHANGER AND HEAT EXCHANGE SYSTEM", the contents of which are
incorporated herein by reference in its entirety.
TECHNICAL FIELD
[0002] The present application relates to a field of heat exchange, and particularly, to
a heat exchanger.
BACKGROUND
[0003] With the continuous development of new energy vehicles, the application of environmentally
friendly CO2 refrigerant in automotive air conditioning systems has been attracted
to the researchers in the related field. CO2 refrigerant has outstanding advantages
of low greenhouse effect index (GMP=1), low ozone depletion potential (ODP=0), non-flammability,
non-toxicity, and stable chemical properties. CO2 refrigerant has a relatively great
latent heat of evaporation and extremely high refrigeration capacity per unit volume,
therefore, a compressor and components for the CO2 refrigerant can have small sizes.
However, a heat emission process and a heat absorption process of CO2 refrigerant
are carried out under a condition of transcritical state, and a heat exchanger using
CO2 as heat exchange medium is required to have relatively high pressure resistance.
The pressure resistance of the heat exchanger is high when a collector pipe has a
small diameter.
SUMMARY
[0004] According to a first aspect of an embodiment of the present application, a heat exchanger
is provided to solve the problem of insufficient pressure resistance of the heat exchanger
by reducing the diameter of the collector pipe.
[0005] The heat exchanger includes a collector pipe and a flat tube.
[0006] The flat tube includes a generally flat main body portion, a first end portion inserted
thereto, and a second end portion inserted thereto. The first end portion and the
second end portion are twisted towards a same side respect to the main body portion.
There is an angle α between a plane defined by a length direction and a width direction
of the main body portion and a plane defined by length directions and width directions
of the first distal section or the second distal section, wherein α≠90°.
[0007] The collector pipe defines a mounting hole for at least a section of the first end
portion or at least a section of the second end portion being inserted thereto and
connected thereto. The length direction of the main body section is substantially
perpendicular to an axis of the collector pipe. There is an angle β between a length
direction of the mounting hole and an axis of the collector pipe, wherein β≠ 90°.
[0008] Optionally, the included angle αbetween the plane defined by the length direction
and the width direction of the main body section and the plane defined by the length
directions and the width directions of the distal section satisfies 15°≤α<40°, and
the included angle βbetween the length direction of the mounting hole and the axis
of the collector pipe satisfies 50°<β≤75°.
[0009] Optionally, the planes defined by the length directions and the widths direction
of the two distal sections of the flat tube are substantially parallel with each other.
[0010] Optionally, the plane defined by the length direction and the width direction of
the main body section is substantially perpendicular to the axis of the collector
pipe.
[0011] Optionally, the heat exchanger further includes a partition plate, the collector
pipe is provided with a partition plate groove, the partition plate is inserted into
and connected to the partition plate groove to partition the collector pipe into two
or more chambers that are isolated from each other.
[0012] Optionally, the collector pipe includes a first collector pipe and a second collector
pipe, the first collector pipe is provided with the partition plate groove, the partition
plate is inserted into and connected to the partition plate groove to partition the
first collector pipe into a first chamber and a second chamber that are isolated from
each other;
a plurality of flat tubes is stacked to form core portions for heat exchange, the
core portion includes a first core portion formed by a part of the plurality of flat
tubes, and a second core portion formed by another part of the plurality of flat tubes;
and
flat tubes of the first core portion have one end inserted into and connected to the
first collector pipe to communicate heat exchange channels of the flat tubes with
the first chamber, and flat tubes of the second core portion have one end inserted
into and connected to the first collector pipe to communicate heat exchange channels
of the flat tubes with the second chamber.
[0013] Optionally, the core portions further include a third core portion from by a third
part of the plurality of flat tubes, and the partition plate partitions the second
collector pipe into a third chamber and a fourth chamber that are isolated from each
other;
the flat tubes of the first core portion have another end inserted into and connected
to the second collector pipe to communicate heat exchange channels of the flat tubes
with the third chamber, the flat tubes of the second core portion have another end
inserted into and connected to the second collector pipe to communicate heat exchange
channels of the flat tubes with the third chamber, and heat exchange channels of flat
tubes of the third core portion communicate the second chamber with the fourth chamber.
[0014] Optionally, a length direction of the partition plate groove is not perpendicular
to an axis of the first collector pipe or an axis of the second collector pipe.
[0015] Optionally, a length direction of the mounting hole in the first collector pipe is
substantially parallel with the partition plate groove; or a length direction of a
mounting hole in the second collector pipe is substantially parallel with a length
direction of the partition plate groove.
[0016] Optionally, the partition plate includes a first surface and a second surface that
have a larger area that are opposite to each other and have large areas, and a first
side surface and a second side surface that adjoin the first surface and the second
surface; the first surface and the second surface are parallel with each other, a
perpendicular line of the first side surface of the partition plate is not perpendicular
to a perpendicular line of the first surface and a perpendicular line of the second
surface and the second side surface of the partition plate is not perpendicular to
the perpendicular line of the first surface and the second surface.
[0017] Optionally, the heat exchanger further includes an inlet member and an outlet member;
the inlet member includes a tube portion and a distribution portion that are connected
to each other, the tube portion extends from a first end of the first collector pipe
to the second chamber, the distribution portion is directly adjacent to the second
chamber, the distribution portion is internally provided with a flow path arranged
along a length direction of the first collector pipe and a plurality of distribution
holes distributed along a length direction of the flow path, the plurality of distribution
holes communicates the flow path with the second chamber, and the tube portion is
in communication with the flow path; and
the outlet member is disposed at the first end of the first collector pipe and in
communication with the first chamber of the first collector pipe.
[0018] Optionally, the heat exchanger further includes a distribution tube, each of the
first collector pipe and the second collector pipe has a first end and a second end
that are opposite to each other along a length direction, the third chamber is closer
to the first end of the second collector pipe than the fourth chamber, and the distribution
tube extends from the first end of the second collector pipe through the third chamber
to communicate with the fourth chamber; and
the partition plate inserted into a partition plate groove of the second collector
pipe is a perforated partition plate.
[0019] Optionally, the heat exchanger further includes a connecting member, and a third
collector pipe and a fourth collector pipe that are arranged side by side, an axis
of the third collector pipe is substantially parallel with an axis of the fourth collector
pipe, and the third collector pipe and the fourth collector pipe are spaced apart
from the first collector pipe and the second collector pipe by a predetermined distance;
the connecting member is disposed in a gap between the first collector pipe and the
second collector pipe that are arranged side by side or between the third collector
pipe and the fourth collector pipe that are arranged side by side, and two collector
pipes that are arranged side by side are in communication with each other through
the connecting member.
[0020] Optionally, the third collector pipe and the fourth collector pipe are each provided
with a mounting hole, into which the distal section is to be inserted;
the core portion further includes a fourth core portion formed by a part of the plurality
of flat tubes, and a fifth core portion formed by another part of the plurality of
flat tubes;
the partition plate partitions the first collector pipe into a first chamber and a
second chamber that are isolated from each other, and partitions the second collector
pipe into a third chamber and a fourth chamber that are isolated from each other;
a part of flat tubes of the fourth core portion communicates the first chamber with
an inner chamber of the third collector pipe, and another part of the flat tubes of
the fourth core portion communicates the second chamber with the inner chamber of
the third collector pipe; a part of flat tubes of the fifth core portion communicates
the third chamber with an inner chamber of the fourth collector pipe, and another
part of the flat tubes of the fifth core portion communicates the fourth chamber with
the inner chamber of the fourth collector pipe; and the connecting member communicates
the second chamber with the fourth chamber.
[0021] Optionally, the connecting member is directly adjacent to the second chamber and
the fourth chamber, the connecting member is provided with a plurality of through-holes
along a length direction of the connecting member, and the plurality of through-holes
communicates the second chamber with the fourth chamber.
[0022] Optionally, the connecting member is disposed between the first collector pipe and
the second collector pipe, the first collector pipe and the second collector pipe
are both in cylindrical shapes, and surfaces of the connecting member to be attached
to the first collector pipe and the second collector pipe are arcuate concave surfaces.
[0023] Optionally, the heat exchanger further includes a connecting member disposed between
the third collector pipe and the fourth collector pipe.
[0024] Optionally, the third collector pipe and the fourth collector pipe are both in cylindrical
shapes, and surfaces of the connecting member to be attached to the third collector
pipe and the fourth collector pipe are arcuate concave surfaces.
[0025] In the heat exchanger according to the above embodiments, the flat tube has twisted
sections at two ends close to the collector pipe, such that the flat tube is twisted
and obliquely inserted into the collector pipes. In this way, a diameter of the collector
pipe is unnecessary to be larger than a width of the flat tube, thereby facilitating
reducing the diameter of the collector pipe and enhancing the pressure resistance
of the collector pipe.
[0026] The additional aspects and advantages of the present application will be described
below.
BRIEF DESCRIPTION OF DRAWINGS
[0027]
FIG. 1A to FIG. 13 are structural schematic diagrams of a heat exchanger according
to an exemplary embodiment of the present application; and FIG. 14 to FIG. 21 are
structural schematic diagrams of a heat exchanger according to another embodiment,
wherein
FIG. 1A is a structural schematic diagram of a heat exchanger 100 provided by an exemplary
embodiment of the present application;
FIG. 1B is a structural schematic diagram of a distribution portion 512 of the heat
exchanger 100 shown in FIG. 1A;
FIG. 2A is a structural schematic diagram of the heat exchanger 100 shown in FIG.
1A, which is provided with another inlet member 52;
FIG. 2B is a structural schematic diagram of an inlet member 52 of the heat exchanger
100 shown in FIG. 2A;
FIG. 3 is a structural schematic diagram of the heat exchanger 100 shown in FIG. 1A,
which is provided with a distribution tube 53;
FIG. 4 is a side view of the heat exchanger 100 shown in FIG. 3;
FIG. 5A is a perspective view of a flat tube 30;
FIG. 5B is a side view of the flat tube 30;
FIG. 5C is a front view of the flat tube 30;
FIG. 5D is a top view of the flat tube 30;
FIG. 6 is a partial structural schematic diagram of a first collector pipe 10;
FIG. 7 is a partial structural schematic diagram of the flat tube 30;
FIG. 8 is a schematic diagram in another viewing angle of a partial structure of the
flat tube 30 shown in FIG. 7;
FIG. 9 is a schematic diagram in another viewing angle of a partial structure of the
first collector pipe 10 shown in FIG. 6;
FIG. 10 is a schematic diagram of a partial structure of the heat exchanger shown
in FIG. 1;
FIG. 11A is a perspective schematic diagram of a partition plate 40;
FIG. 11B is a structural schematic diagram in another viewing angle of the partition
plate 40;
FIG. 11C is a top view of the partition plate 40;
FIG. 11D is a side view of the partition plate 40;
FIG. 12 is a perspective schematic view of a partition plate with a hole;
FIG. 13 is a structural schematic view of the distribution tube 53;
FIG. 14 is a structural schematic view of another heat exchanger 200 provided by an
exemplary embodiment of the present application;
FIG. 15 is a partial structural schematic diagram of the heat exchanger 200 shown
in FIG. 14;
FIG. 16A is a top view of the heat exchanger 200 shown in FIG. 14;
FIG. 16B is a front view of the heat exchanger 200 shown in FIG. 14;
FIG. 16C is a bottom view of the heat exchanger 200 shown in FIG. 14;
FIG. 16D is a structural schematic diagram of a first collector pipe and a second
collector pipe connected thereto;
FIG. 17A is an exploded view of a partial structure of the heat exchanger 200 shown
in FIG. 14;
FIG. 17B is a structural schematic diagram of a connecting member 81;
FIG. 17C is a structural schematic diagram of the second collector pipe 20;
FIG. 18A is an exploded view of another partial structure of the heat exchanger 200
shown in FIG. 14;
FIG. 18B is a structural schematic diagram of a connecting member 82;
FIG. 18C is a structural schematic diagram of a fourth collector pipe 70;
FIG. 19A to 19D are structural schematic diagrams of a flat tube twisted towards the
same side, wherein
FIG. 19A is a structural schematic diagram of the flat tube before being twisted;
FIG. 19B is a structural schematic diagram of the flat tube being partially twisted;
FIG. 19C is another structural schematic diagram of the flat tube being partially
twisted;
FIG. 19D is a structural schematic diagram of the flat tube after being partially
twisted;
FIG. 20 is a structural schematic diagram of a flat tube twisted towards different
sides; and
FIG. 21 is a structural schematic diagram of another partition plate provided by an
exemplary embodiment of the present application.
DESCRIPTION OF EMBODIMENTS
[0028] Exemplary embodiments will be described in detail herein, which are illustrated in
the accompanying drawings. Unless otherwise indicated, in the description regarding
the drawings, identical reference signs represent the same or similar elements in
the different drawings. The implementations described in the following exemplary embodiments
are not all of the implementations consistent with the present application. Instead,
they are merely examples of devices and methods consistent with some aspects of the
present application detailed in the pending claims.
[0029] The terms used in the embodiments of the present application are merely for the purpose
of describing specific embodiment, rather than limiting the present application. The
terms "a", "an", "the" and "said" in a singular form in the embodiments of the present
application and the attached claims are also intended to include plural forms thereof,
unless noted otherwise.
[0030] It should be understood that the terms "first", "second", and similar terms do not
denote limitations of sequence, quantity, or importance, but are merely used to distinguish
different components. Similarly, the words "a", "an", or the like do not denote a
limitation of quantity, but indicates at least one; and when not explicitly stated,
"a plurality of' mentioned in the present application means two or more. Unless otherwise
indicated, the terms "front", "rear", "lower" and/or "upper" are used for convenience
of description and are not limited to one location or one spatial orientation. The
expression such as "comprising" or "including" means that an element or object followed
by "comprising" or "including" encompasses listed elements or objects and their equivalents
following "comprising" or "including", without excluding other elements or objects.
[0031] A heat exchanger and a heat exchange system according to the exemplary embodiments
of the present application will be described in detail below with reference to the
accompanying drawings. The features in the embodiments described below may be complementary
to each other or combined with each other without contradiction.
[0032] FIG. 1 to FIG. 13 are structural schematic diagrams of a heat exchanger 100 according
to an exemplary embodiment of the present application. The heat exchanger 100 can
be applied in various types of heat exchange systems such as air conditioners. The
heat exchanger 100 mainly exchanges heat through a refrigerant inside the heat exchanger
and air flowing outside the heat exchanger to provide a relatively comfortable ambient
temperature.
[0033] Referring to FIG. 1, and further referring to FIG. 2 to FIG. 13 when necessary, the
heat exchanger 100 includes a core portion for heat exchange formed by stacking a
plurality of flat tubes 30, and a first collector pipe 10 and a second collector pipe
20 that are connected to ends of the plurality of flat tubes 30 and are arranged side
by side.
[0034] The flat tube 30 is a micro-channel flat tube, and the flat tube 30 is internally
provided with a micro-channel. In combination with FIG. 5, the heat exchanger 30 includes
a first tube portion 31, a second tube portion 32, and a bent portion 33 connecting
the first tube portion 31 with the second tube portion 32. It is also possible that
the flat tube 30 is not a micro-channel flat tube, that is, the channel inside the
flat tube is not a micro-channel. It should be noted that the first tube portion 31,
the third tube portion 33 and the second tube portion 32 of the flat tube 30 are of
an integral structure, i.e., each flat tube 30 is formed by bending one flat tube.
[0035] At least one of the first tube portion 31 and the second tube portion 32 includes
a main body section, a distal section, and a twisted section connecting the main body
section with the distal section. It should be understood that, the main body section
is the main heat exchange area in the heat exchanger 100. Therefore, the main body
section generally has a much greater length than the twisted section and the distal
section. In an example, each of the first tube portion 31 and the second tube portion
32 includes the main body section, the distal section, and the twisted section. The
first tube section 31 includes a main body section 311, a distal section 313, and
a twisted section 312 connecting the main body section 311 with the distal section
313. The second tube portion 32 includes a main body section 321, a distal section
323, and a twisted section 322 connecting the main body section 321 with the distal
section 323. The main body sections 311, 321 and the distal sections 313, 323 are
all straight sections that are not twisted and deformed.
[0036] In a specific implementation process, the twisted section 312 can be formed by twisting
the heat exchange tube region that is originally straight. The main body section 311,
the twisted section 312, and the distal section 313 are of an integral structure.
A direction of twisting can be either clockwise or counterclockwise.
[0037] Moreover, taking the first tube portion 31 as an example, the twisted section 312
formed by twisting forms an angle α between a plane of the main body section 311 and
a plane of the distal section 313. In other words, the angle α is limited between
a plane S1 defined by a length direction L3 and a width direction W3 of the main body
section 311 and a plane S2 defined by a length direction and a width direction of
the distal section 313, in combination with FIG. 7 and FIG. 8. The angle α is also
called as a twist angle α. The inventors, in combination with their own experiences
on production and processing technology, have found the optimal range of the twist
angle α: 15° ≤ α < 40° through mathematical modeling and model optimization calculation
and analysis.
[0038] The first collector pipe 10 defines a mounting hole 14, the second collector pipe
20 defines a mounting hole 24, and the two distal sections 313, 323 of each flat tube
30 are inserted into the mounting holes 14, 24, respectively.
[0039] The heat exchanger 100 further includes a partition plate 40. Correspondingly, the
first collector pipe 10 defines a partition plate groove 15, and the partition plate
40 is inserted into the partition plate groove 15 to divide the first collector pipe
10 into a first chamber 11 and a second chamber 12 separated from each other. Further,
the core portion includes a first core portion 301 formed by a part of the plurality
of flat tubes 30, and a second core portion 302 formed by another part of the plurality
of flat tubes 30. One end of each flat tube 30 forming the first core portion 301
communicates with the first chamber 11, and the other end thereof communicates with
a chamber of the second collector pipe 20. One end of each of the flat tubes 30 forming
the second core portion 302 communicates with the chamber of the second collector
pipe 20, and the other end thereof communicates with the second chamber 12 of the
first collector pipe 10.
[0040] Referring to FIGS. 1A-2B, the first chamber 11 of the first collector pipe 10 communicates
with an inlet allowing a heat exchange medium to flow into the heat exchanger 100,
and the second chamber 12 of the first collector pipe 10 communicates with an outlet
allowing the heat exchange medium to flow out of the heat exchanger 100. In this way,
the heat exchange medium flows into the first chamber 11 of the first collector pipe
10 from the inlet, and flows into the chamber of the second collector pipe 20 after
the heat exchange via the first core portion 301; then flows into the second chamber
12 after the heat exchange via the second core portion 302, and flows out through
the outlet communicating with the second chamber 12. Therefore, a four-flow path arrangement
of the heat exchange medium can be achieved in the heat exchanger.
[0041] The heat exchanger 100 further includes an inlet member 51 (in combination with FIG.
1A) or 52 (in combination with FIG. 2A), and an outlet member 56. The first and second
collector pipes 10, 20 each has a first end 101 and a second end 103 opposite with
each other along a length direction. The first chamber 11 is closer to the first end
101 of the first collector pipe 10 than the second chamber 12. Both ends of each of
first and second collector pipes 10, 20 can be provided with end caps 19 to seal the
collector pipes. The end cap 19 and the collector pipe can be integrally formed or
can be independently provided. The end cap 19 can be a built-in end cap or an external
end cap, which is not specifically limited in the present application and can be configured
according to the specific application environment. The inlet member 51 includes a
tube portion 511 and a distribution portion 512 connected thereto. The tube portion
511 extends from the first end 101 of the first collector pipe 10 to the second chamber
12. The distribution portion 512 is disposed directly adjacent to the second chamber
12. The distribution portion 512 internally defines a flow path 5122 disposed along
the length direction of the first collector pipe 10 and a plurality of distribution
holes 5121 disposed along a length direction of the flow path 5122 (in conjunction
with FIG. 1B). The distribution hole 5121 can be a circular hole or a waist hole.
A plurality of through-holes (not shown) are formed in a wall of the first collector
pipe 10 at the second chamber 12 corresponding to these distribution holes 5121. The
tube portion 511 can be inserted into and connected to the flow path 5122 of the inlet
member 51. The distribution hole 5121 communicates the flow path 5122 with the second
chamber 12 such that the refrigerant entering from the tube portion 511 is substantially
uniformly distributed into the second chamber 12 through the respective distribution
holes. The distribution portion 512 can be a block-shaped component that is independent
of the tube portion 511. The distribution section 512 can be disposed between the
first collector pipe 10 and the second collector pipe 20. The first and second collector
pipes 10, 20 are both cylindrical, and correspondingly, surfaces (not shown) of the
distribution portion 512 attached to the first and second collector pipes 10, 20 are
arcuate concave surfaces. The first and second collector pipes 10, 20 can be fixed
to the surface of the distribution portion 512 by welding (e.g., brazing). The block-shaped
distribution portion 512 can support the first collector pipe 10 and the second collector
pipe 20 on both sides thereof to improve the stability of the product.
[0042] Referring to FIG. 2B, the inlet member 52, as a whole, is tubular and includes an
outer tube portion 521 and an inner tube portion 522. The outer tube portion 521 is
disposed outside the first and second collector pipes 10, 20 and extends from the
first end 101 of the first header 10 to the second end 103 along the length direction
of the first collector pipe 10. The inner tube portion 522 has one end connected to
the outer tube portion 521 and the other end extending into the second chamber 12
through the end cap 19 disposed at the second end 103.
[0043] The outlet member 56 is disposed at the first end 101, for example, being inserted
into the first chamber 11 through the end cap 19 disposed at the first end 101. The
inlet member 51 or 52 and the outlet member 56 are disposed at the same side of the
collector pipes (at the first end 101 of the first and second collector pipes 10,
20), which facilitates the installation of the heat exchanger 100 and reduces the
installation space, thereby facilitating a reduction of volume.
[0044] Referring to FIG. 3 and FIG. 4, the second collector pipe 20 of the heat exchanger
100 is provided with a partition plate groove 25 for the partition plate 40 being
inserted to divide the second collector pipe 20 into two chambers that are separate
from each other. The partition plate grooves 15 and 25 are staggered.
[0045] Further, the core portion includes the first core portion 301 formed by a part of
the plurality of flat tubes 30, the second core portion 302 formed by another part
of the plurality of flat tubes 30, and a third core portion 303 formed by the rest
part of the plurality of flat tubes 30.
[0046] Referring to FIG. 3, FIG. 4 and FIG. 10, the partition plate 40 divides the first
collector pipe 10 into a first chamber 11 and a second chamber 12 that are separated
from each other. The partition plate 40 divides the second collector pipe 20 into
a third chamber 21 and a fourth chamber 22 that are separated from each other. The
flat tubes 30 of the first core portion 301 communicate the first chamber 11 and the
third chamber 21. The flat tubes 30 of the second core 302 communicate the third chamber
21 and the second chamber 12. The flat tubes 30 of the third core portion 303 communicate
the second chamber 12 and the fourth chamber 22.
[0047] Further, two or more partition plate grooves 15, 25 can be provided, so as to obtain
more flow path arrangement of the heat exchange medium inside the heat exchanger 100.
[0048] By providing the partition plate in the above technical solutions, a length of a
refrigerant passage inside the heat exchanger is increased, which is beneficial to
improve a heat exchange efficiency of the heat exchanger.
[0049] Referring to FIG. 6 and FIG. 10, still taking the first collector pipe 10 as an example,
a length direction of the mounting hole 14 is not perpendicular to an axis R1 of the
first collector pipe 10. An angle β is formed between the length direction of the
mounting hole 14 and the axis R1 of the first collector pipe 10. The plane S1 defined
by the length direction L3 and the width direction W3 of the main body section 311
is generally perpendicular to the axis R1 of the collector pipe 10. In this way, a
sum of the angle β and the angle α is equal to 90 degrees. The inventors have found
that the optimal range of the angle β is: 50° < β ≤ 75°. The structure in which the
plane S1 is perpendicular to the collector pipe 10 facilitates a circulation of air
among the flat tubes, thereby improving the heat exchange efficiency of the heat exchanger.
By such an inclined arrangement of the mounting hole 14, the flat tubes 30 are obliquely
inserted into the collector pipes (including the first collector pipe 10 and the second
collector pipe 20), so that a diameter of the collector pipe is unnecessary to be
larger than a width of the flat tube, thereby reducing the diameter of the collector
pipe and increasing the pressure resistance of the flat tubes. At the same time, it
is also advantageous to reduce the volume and weight of the collector pipe.
[0050] Referring to FIG. 6 and FIG. 9, the length direction of the partition plate groove
15 is also not perpendicular to the axis R1 of the collector pipe 10. An angle is
formed between the length direction of the partition plate groove 15 and the axis
R1 of the collector pipe 10. In an alternative embodiment, the length direction of
the partition plate groove 15 is substantially parallel with the length direction
of the mounting hole 14. That is to say, the angle formed between the length direction
of the partition plate groove 15 and the axis R1 of the collector pipe 10 is equal
to β. Such design facilitates a reduction of a distance between the flat tubes on
both sides of the partition plate groove, and thus the heat exchanger has a more compact
structure, which is beneficial to reduce of the volume of the heat exchanger.
[0051] The partition plate 40 includes a first surface 41 and a second surface 42 that are
opposite to each other and have a relatively large areas, and a first side surface
43 and a second side surface 44 adjacent to the first and second surfaces (in combination
with FIG. 11A to FIG. 11D). In an embodiment, the width direction W2 of the partition
plate groove 15 is parallel with the axis R1 of the collector pipe 10. The first surface
41 is substantially parallel to the second surface 42, and a perpendicular line V1
of the first side surface 43 is substantially parallel with a perpendicular line V2
of the second side surface 44. Correspondingly, the perpendicular line V1 of the first
side surface 43 of the partition plate is not perpendicular to a perpendicular line
V3 of the first surface 41 and the second surface 42, and the perpendicular line V2
of the second side surface 44 of the partition plate is not perpendicular to the perpendicular
line V3 of the first surface 41 and the second surface 42. The first side surface
43 is not perpendicular to the first surface 41 (or the second surface 42) and an
angle is formed therebetween. Similarly, the second side surface 44 is inclined to
the first surface 41 (or the second surface 42), and is not perpendicular to the first
surface 41 (or the second surface 42). In this way, when the partition plate 40 is
inserted into and connected to the partition plate groove 15, a portion, to be in
contact with each groove surface of the partition plate groove 15, of each of the
first side surface 43, the second side surface 44, the first surface 41, and the second
surface 42 is attached to each groove surface. In other embodiments, the width direction
W2 of the partition plate groove can be not parallel to the axis of the collector
pipe, which is not specifically limited in the present application.
[0052] Referring to FIG. 3, FIG. 4, FIG. 12, and FIG. 13, the heat exchanger 100 includes
a distribution tube 53. The third chamber 21 is closer to the first end 101 of the
second header 10 than the fourth chamber 22, and the distribution tube 53 extends
from the first end 101 through the third chamber 21 and communicates with the fourth
chamber 22. The distribution tube 53 is provided with a plurality of distribution
holes 531. When the refrigerant is introduced into the fourth chamber 22 through the
distribution tube 53, the refrigerant is distributed into the fourth chamber 22 through
the distribution holes 531, such that the distribution of the refrigerant is more
uniform, thereby improving the heat exchange efficiency of the heat exchanger. In
the meantime, by providing the distribution tube 53, the inlet and outlet ports of
the refrigerant in the heat exchanger 100 can be arranged at the same side of the
heat exchanger 100, facilitating the installation in a narrow space. Correspondingly,
the partition plate 40 inserted into the partition plate groove 25 is a perforated
partition plate. For example, the partition plate 40 further includes a hole 45 for
the distribution tube 53 passing through. It should be noted that the hole 45 is disposed
at an end of the partition plate 40 far away from the flat tube 30 to reduce the interference
between the distribution tube 53 and the end of the flat tube 30, which is beneficial
to improve a fluidity of the refrigerant and further improve the heat exchange efficiency
of the heat exchanger 100.
[0053] Further, fins 310 are disposed between adjacent flat tubes 30. It should be noted
that, the heat exchange fin 310 disposed at the first tube portion 31 of the flat
tube 30 and a heat exchange fin 310 disposed at the second tube portion 32 can be
the same fin. In this way, the heat exchange area of the heat exchange fin 310 can
be increased, which is advantageous for improving the heat exchange efficiency of
the heat exchanger 100. It is also possible that the heat exchange fin 310 disposed
at the first tube portion 31 of the flat tube 30 and the heat exchange fin disposed
at the second tube portion 32 can be separated fins, which is not specifically limited
in the present application and can be provided according to the specific application
environment.
[0054] The heat exchanger 100 further includes a side plate 90 to fix the heat exchanger
100. It should be noted that the heat exchange fins 310 can also be provided between
the side plate 90 and the flat tubes 30. Certainly, the side plate 90 on the side
of the first tube portion 31 of the flat tube 30 and the side plate 90 on the side
of the second tube portion 32 can be an integral side plate, which is conducive to
enhance the stability of the heat exchanger. It is also possible that the side plate
90 on the side of the first tube portion 31 of the flat tube 30 and the side plate
90 on the side of the second tube portion 32 are independent side plates.
[0055] It should be understood that a specific structure of the second tube portion 32 is
similar to that of the first tube portion 31, and the specific description of the
second tube portion 32 may refer to the related description of the first tube portion
31. Correspondingly, the specific structure of the second collector pipe 20 is similar
to that of the first collector pipe 10. The specific description of the second collector
pipe 20 may refer to the related description of the first collector pipe 10, particularly
the mounting hole 24 and the partition plate groove 25.
[0056] Referring to FIGS. 1 to 4, the plane S2 defined by the length direction and the width
direction of the distal section 313 of the flat tube 30 is substantially parallel
with the plane S3 defined by the length direction and the width direction of the distal
section 323. In an embodiment, the plane S2 is parallel with the S3. This can facilitate
the installation of the flat tubes 30.
[0057] When the heat exchanger 100 is in operation, the refrigerant flows into the fourth
chamber 22 of the second collector pipe through the distribution tube 53, and then
flows into the flat tubes 30 of the third core portion 303 from the fourth chamber
22, so as to enter the second chamber 12 of the first collector pipe 10. Thereafter,
the refrigerant flows into the flat tube 30 of the second core portion 302 from the
second chamber 12, and then flows into the third chamber 21 of the second collector
pipe 20. Subsequently, the refrigerant flows into the flat tubes 30 of the first core
portion 301, then flows into the first chamber 11 of the first collector pipe 10 and
flows out through the first end 101 of the first chamber 11. At this point, one heat
exchange process of the refrigerant is completed in the heat exchanger 100. It is
also possible that, when the heat exchanger 100 is in operation, the heat exchange
can be performed by the refrigerant in an opposite flow direction, i.e., flowing from
the first end 101 of the first chamber 11, and flowing out of the heat exchanger 100
from the distribution tube 53.
[0058] Referring to FIG. 14, the present application provides another heat exchanger 200
that can be applied in various types of heat exchange systems, such as air conditioners.
The heat exchanger 200 mainly exchanges heat between the refrigerant inside the heat
exchanger and air flowing out of the heat exchanger, so as to provide a relatively
comfortable ambient temperature.
[0059] Referring to FIGS. 7, 14-21, the heat exchanger 200 includes a core portion for heat
exchange formed by stacking a plurality of flat tubes 30, a first collector pipe 10
and a second collector pipe 20 that are connected to ends of the plurality of flat
tubes 30 and are arranged side by side, a connecting member 81, a third collector
pipe 60 and a fourth collector pipe 70. The third collector pipe 60 and the fourth
collector pipe 70 are provided with mounting holes 64, 74, into which the distal sections
33 are to be inserted. It should be noted that the mounting holes 64, 74, and 14,
24 in the heat exchanger 200 are provided in a similar way as the mounting holes 14
and 24 in the heat exchanger 100 shown in FIG. 1 to FIG. 13 described above, which
will not be repeated hereafter.
[0060] The flat tube includes a main body section, a distal section, and a twisted section
connecting the main body section with the distal section. In an embodiment, the twisted
section is provided close to each of the ends of the flat tube 30. Referring to FIG.
19A to FIG. 19D, the flat tube 30 includes a main body section 34, a first distal
section 36, a second distal section 38, a first twisted section 35 connecting the
main body section 34 and the first distal section 36, and a second twisted section
37 connecting the main body section 34 and the second distal section 38. The main
body section 34, the first distal section 36 and the second distal section 38 are
all straight sections without being twisted and deformed.
[0061] The first twisted section 35 is formed by twisting. An angle α is formed between
the main body section 34 and the first distal section 36 (in combination with FIG.
7 and FIG. 8). The inventors, in combination with their own experiences on production
and processing technology, have found the optimal range of the twist angle α: 15°
≤ α < 40° through mathematical modeling and model optimization calculation and analysis.
Similarly, the second twisted section 37 is formed by twisting. An angle is formed
between the main body section 34 and the second distal section 38, which is substantially
equal to the angle α. In some embodiments, the angle is equal to the angle α. The
optimal range of the angle is the same as the above optimal range of 15° ≤ α < 40°.
The flat tube 30 is twisted in a similar way as the heat exchanger 100 shown in FIG.
1 to FIG. 13, for which reference can be made to the above related description and
which will not be repeated herein.
[0062] It should be noted that, the main body section 34 is the main heat exchange area
in the heat exchanger 200. Thus, the main body section 34 has a much greater length
than the first twisted section 35, the first distal section 36, the second twisted
section 37 and the second distal section 38.
[0063] The first collector pipe 10 is provided with mounting holes 14, and the first distal
sections 36 or the second distal sections 38 of the flat tubes 30 are inserted into
the mounting holes 14, respectively. The second collector pipe 20 is provided with
mounting holes 24, and the first distal sections 36 or the second distal sections
38 of the flat tubes 30 are inserted into the mounting holes 24, respectively.
[0064] The heat exchanger 200 further includes partition plates 40, and the first collector
pipe 10 is provided with a partition plate groove 15, one of the partition plates
40 is inserted into the partition plate groove 15 to divide the first collector pipe
10 into a plurality of separated chambers. The second collector pipe 20 is provided
with a partition plate groove 25, one of at least two partition plates 40 is inserted
into the partition plate groove 25 to divide the second collector pipe 20 into a plurality
of separated chambers.
[0065] It should be noted that the partition plate 40 can be an oblique partition plate
without any hole, which has the same structure as that of the heat exchanger 100 shown
in FIG. 1 to FIG. 13 as described above. The partition plate 40 also can be a non-oblique
partition plate (in combination with FIG. 21). The partition plate groove 15 and the
partition plate groove 25 are provided correspondingly to the partition plates 40
and match with the partition plates 40. For example, if the partition plate 40 is
oblique, the partition plate groove 15 or the partition plate groove 25 can be provided
with reference to the partition plate groove shown in FIG. 1 to FIG. 13 as described
above. If the partition plate 40 is not oblique, the length direction L2 of the corresponding
partition plate groove is substantially perpendicular to the axis R1 of the collector
pipe, which can be set according to the specific application environment and is not
limited in the present application.
[0066] When the first twisted section 35 and the second twisted section 37 are twisted towards
the same side, the same side twist described in the present application emphasizes
a relative position between the first distal section 36 and the second distal section
38. In a specific implementation, after the twisting, the plane S6 of the first distal
section 36 is substantially parallel with the plane S4 of the second distal section
25. Alternatively, the length directions L1 of the two mounting holes that are provided
on the collector pipes at both ends of the flat tube 30 and into which the flat tube
30 is to be inserted are substantially parallel when being viewed from a direction
of the mounting holes of the collector pipe 10. Specifically, the same side twist
will be described in detail in combination with FIG. 19A to FIG. 19D. The flat tube
30 includes two surfaces S11, S12 each having a relatively large area. The surface
S11 includes a first section surface S111 located at the first distal section 36,
a second section surface S112 located at the first twisted section 35, a third section
surface S113 located at the main body section 34, a fourth section surface S114 located
at the second twisted section 37, and a five section surface S115 located at the second
distal section 38. Viewed from a top-to-bottom direction, it can be seen that a position
of the second distal section 38 after the twisting is actually obtained by twisting
the second twisted section 37 counterclockwise; and likewise, it can be seen that
a position of the first distal section 36 is obtained by twisting the first twisted
section 35 counterclockwise. After the twisting, the first section surface S111 and
the fifth section surface S115 of the flat tube 30 face towards a same direction.
Further, a normal line of the first section surface S111 is substantially parallel
with a normal line of the fifth section surface S115. The same side twist can be also
interpreted to mean that the first distal section 36 includes a first side 361 having
a relatively small area and extending in a thickness direction of the first distal
section 36, the second distal section 38 includes a second side 381 having a relatively
small area and extending in a thickness direction of the second distal section 38,
and the first side 361 and the second side 381 are located on a same side of the flat
tube 30. The main body section 34 includes a third side 341 having a relatively small
area, and the third side 341 extends along a thickness direction T6 of the main body
section, and the third side 341 extends along a length direction L6 of the main body
section 34 to both ends to form the first side 361 of the first distal section 36
and the second side 381 of the second distal section 38. The first side 361 and the
second side 381 are located at a same side of the plane L6 defined by the length direction
L6 and a width direction W6 of the main body section 34, i.e., the plane where the
third section surface S113 is located.
[0067] In addition, the first twisted section 35 and the second twisted section 37 of the
flat tube 30 can also be twisted towards opposite sides (in conjunction with FIG.
20). In the present application, being twisted towards opposite sides means that the
plane S7 can be theoretically regarded as a plane obtained by reversely twisting the
plane S4 by 180° when the twist angle is the same as the angle α. That is, after being
twisted towards opposite sides, the first section surface S111 and the fifth section
surface S115 face towards exactly opposite directions. The first side 361 and the
second side 381 are located on both sides of the plane defined by the length direction
L6 and the width direction W6 of the main body section 34, i.e., the plane where the
third section surface S113 is located.
[0068] Based on a large number of experimental data and actual production operations, the
inventors have found that, when the twist angle α satisfies 15° ≤ α < 40°, problems
such as deformation and distortion of the flat tube body during twisting can be effectively
alleviated by producing the flat tube through the same side twisting, when comparing
with other twist manners such as twisting towards opposite sides, thereby increasing
the yield of the flat tubes.
[0069] The core portion includes a fourth core portion 304 formed by a part of the plurality
of flat tubes 30, and a fifth core portion 305 formed by another part of the plurality
of flat tubes 30.
[0070] The partition plate 40 divides the first collector pipe 10 into a first chamber 11
and a second chamber 12 that are separated from each other, and also divides the second
collector pipe 20 into a third chamber 21 and a fourth chamber 22 that are separated
from each other. Correspondingly, a part of the flat tubes 30 of the fourth core portion
304 communicates the first chamber 11 with an inner chamber of the third collector
pipe 60. Another part of the flat tubes 30 of the fourth core portion 304 communicates
the second chamber 12 with the inner chamber of the third collector pipe 60. A part
of the flat tubes 30 of the fifth core portion 305 communicates the third chamber
21 with an inner chamber of the fourth collector pipe 70. Another part of the flat
tubes 30 of the fifth core portion 301 communicates the fourth chamber 22 with the
inner chamber of the fourth collector pipe 70. The connecting member 81 communicates
the second chamber 12 with the fourth chamber 22.
[0071] Further, the connecting member 81 is adjacent to the second chamber 12 and the fourth
chamber 22. A plurality of through-holes 815 is distributed along the length direction
L4 of the connecting member 81 and communicates the second chamber 12 with the fourth
chamber 22. In an embodiment, the plurality of through-holes 815 is evenly distributed.
It is also possible that the plurality of through-holes 815 is unevenly distributed.
It can be set according to the specific application environment, which is not limited
in the present application. The first collector pipe 10 is correspondingly provided
with connecting holes 18 that cooperate with the through-holes 815, respectively.
The second collector pipe 20 is correspondingly provided with connecting holes 28
that cooperate with the through-holes 815, respectively. The inventors, in combination
with their own experience in production and processing technology, have found that
the optimal range of diameter (D) of the connecting holes 18, 28 is 2mm≤D≤4mm. It
is preferable that the diameter D is 2.5 mm (in combination with FIG. 16D).
[0072] Further, the connecting member 81 is disposed between the first collector pipe 10
and the second collector pipe 20. Both of the first and second collector pipes 10,
20 are cylindrical shapes. Each surface 813 of the connecting member 81 attached to
the first and second collector pipes 10, 20 is an arcuate concave surface (in combination
with FIG. 17A to FIG. 17C) that matches with outer wall surfaces of the first and
second collector pipes 10, 20. The first and second collector pipes 10, 20 can be
fixed to the connecting member 81 by welding (for example, brazing). The connecting
member 81 can support the first collector pipe 10 and the second collector pipe 20
on both sides thereof, thereby improving the stability of the product. In addition,
in the automotive air conditioners using CO2 as refrigerant, the related heat exchangers
are required to have relatively high pressure resistance. The first and second collector
pipes use cylindrical tubes to increase the strength thereof. In order to establish
the communication between the two collector pipes, in the present technical solution,
the connecting member is used to communicate the first collector pipe with the second
collector pipe, and such communication has higher stability than the communication
formed by a tangency of the first and second collector pipes.
[0073] The connecting member 81 includes a first surface 811 and a second surface 812 opposite
to the first surface 811. Optionally, a width W4 of the first surface 811 is greater
than a width W5 of the second surface 812.
[0074] The heat exchanger further includes a connecting member 82 disposed between the third
collector pipe 60 and the fourth collector pipe 70.
[0075] In an optional embodiment, the third and fourth collector pipes 60, 70 are both cylindrical
shapes, and a surface 813 of the connecting member 82 attached to the third and fourth
collector pipes 60, 70 is an accurate concave surface. The third and fourth collector
pipes 10, 20 and the connecting member 82 can be fixed by welding (e.g., brazing)
(in combination with FIG. 18A to Fig. 18C). The connecting member 82 can support the
third collector pipe 60 and the fourth collector pipe 70 on both sides thereof, thereby
further improving the stability of the product.
[0076] Further, the first collector pipe 10 is provided with an external port 17 communicating
with the first chamber 11. An external connecting portion 16 is correspondingly disposed
at the external port 17. The second collector pipe 20 is provided with an external
port 27 that is in communication with the third chamber 21. An external connecting
portion 26 is correspondingly disposed at the external port 27. The external port
17 and the external port 27 are staggered, which facilitates the installation of the
heat exchanger 200. It is also possible that the external ports 17 and 27 are aligned
with each other.
[0077] Further, fins 310 are disposed between adjacent flat tubes 30. The fin 310 disposed
at a side where the first collector pipe 10 and the third collector pipe 60 are located
and the fin 310 disposed at a side where the second collector pipe 20 and the fourth
collector pipe 70 are located can correspond to a same fin, thereby increasing the
heat exchange area and improving the heat exchange effect. It is also possible that
two different fins are provided.
[0078] The heat exchanger 200 further includes a side plate 90 to fix the heat exchanger
200. It should be noted that a heat exchange fin 310 can also be disposed between
the side plate 90 and the flat tube 30. The side plate 90 at the first end 101 can
be an integral side plate, thereby enhancing the stability of the heat exchanger.
The side plate 90 at the first end 101 can also be two separate side plates. It is
also possible that the side plate 90 at the second end 103 can also be an integral
side plate, or two separate side plates.
[0079] When the heat exchanger 200 is in operation, the refrigerant flows into the first
chamber 11 from the external connecting portion 16 of the first collector pipe 10
via the external port 17, the refrigerant further flows into a part of the flat tubes
30 of the first core portion 304 from the first chamber 11, and flows in the flat
tubes 30 towards the third collector pipe 60, which is taken as a first flow path
of the refrigerant. Thereafter, the refrigerant flows into the third collector pipe
60, flows from the first end 101 of the third collector pipe 60 to the second end
103, the refrigerant further flows into a part of the flat tubes 30 of the second
core portion 305 from the third collector pipe 60, and flows in the flat tubes 30
towards the first collector pipe 10, which is taken as a second flow path of the refrigerant.
Then, the refrigerant flows into the second chamber 12 of the first collector pipe
10, flows into the fourth chamber 22 of the second collector pipe 20 through the through-holes
815 of the connecting member 81, and then the refrigerant flows towards the fourth
collector pipe 70 via another part of the flat tubes 30 of the second core portion,
which is taken as a third flow path. Then, the refrigerant flows into the fourth collector
pipe 70, flows from the second end 103 of the fourth collector pipe 70 to the first
end, and then then the refrigerant flows to the third chamber 21 of the second collector
pipe 20 via another part of the flat tubes 30 of the first core portion 304, which
is taken as a fourth flow path. Finally, the refrigerant flows out the heat exchanger
from the external port 27 of the second collector pipe 20 via the external connecting
portion 26. At this point, a heat exchange process of the refrigerant is completed
in the heat exchanger 200. When the refrigerant flows in the heat exchanger 200, the
first flow path, the second flow path, the third flow path, and the fourth flow path
correspond to a highest temperature, a secondary highest temperature, a secondary
lowest temperature, and a lowest temperature, respectively. A part of the air passes
through the lowest temperature and the highest temperature sequentially, and the other
part passes through the secondary lowest temperature and the secondary highest temperature.
Compared with the four flow paths of the bending structure, in the present case, a
temperature gradient between the flow paths is more suitable, and a temperature difference
between the air and each flow path can be fully utilized, such that the air after
the heat exchange by the heat exchanger has more uniform temperature. It should be
noted that the heat exchanger 200 includes, but is not limited to, 2 flow paths or
4 flow paths, and the heat exchanger 200 can include other numbers of flow paths,
such as 6 flow paths, 8 flow paths, 10 flow paths, and the like.
[0080] It is also possible that, when the heat exchanger 200 is in operation, the flow direction
of the refrigerant can be opposite to the flow direction described above, i.e., the
refrigerant flows in from the external port 27 and flows out from the external port
17. The present application is not limited thereto, and can be set according to specific
applications.
[0081] In the above embodiments, the collector pipes are arranged side by side to form at
least two layers of heat exchange structures, and multiple heat exchanges can be performed
on the air flowing outside the flat tubes, so as to ensure a sufficient heat exchange
of the air. By providing the partition plate, the length of the refrigerant passage
inside the heat exchanger is increased, thereby improving the heat exchange efficiency
of the heat exchanger. In addition, the flat tube is provided with the twisted sections
close to both ends, the flat tube is twisted and obliquely inserted into the collector
pipe, such that the diameter of the collector pipe is unnecessary to be larger than
the width of the flat tube, thereby facilitating reducing the diameter of the collector
pipe and enhancing the pressure resistance of the collector pipe with the same material
and the same wall thickness.
[0082] The present application further provides a heat exchange system, and the heat exchange
system includes the above heat exchanger 100 or the above heat exchanger.
[0083] The present application further provides an electric auto or an electric vehicle
including the above heat exchange system.
[0084] The above merely describes the preferred embodiments of the present application,
rather than forms any limitation of the present application. Although the present
application has been disclosed in the preferred embodiments that are not intended
to limit the present application, those skilled in the related art, by referring the
technical content disclosed above, can make some variations or modifications to obtain
equivalent embodiments without departing from the technical solutions of the present
application. In accordance with the technical spirit of the present application, any
simple variations, equivalent changes and modifications to the above embodiments without
departing from the technical scope of the present application shall fall within the
protection scope of the present application.
1. A heat exchanger,
characterized in that, the heat exchanger comprises:
a collector pipe comprising a mounting hole; and
a flat tube comprising a main body section that is substantially flat, a first distal
section, and a second distal section, the first distal section and the second distal
section are inserted into and connected to the collector pipe and are twisted towards
a same side with respect to the main body section, and at least a portion of the first
distal section and at least a portion of the second distal section are inserted into
and connected to the mounting hole; wherein
an angle located between a plane defined by a length direction and a width direction
of the main body section and a plane defined by a length direction and a width direction
of the first distal section or the second distal section is α, where α ≠ 90°; wherein
the length direction of the main body section is substantially perpendicular to an
axis of the collector pipe, and an angle defined between a length direction of the
mounting hole and the axis of the collector pipe is β, where β ≠ 90°.
2. The heat exchanger according to claim 1, characterized in that, the angle α between the plane defined by the length direction and the width direction
of the main body section and the plane defined by the length direction and the width
direction of the distal section satisfies 15°≤α < 40°, and the angle β between the
length direction of the mounting hole and the axis of the collector pipe satisfies
50° < β≤75°.
3. The heat exchanger according to claim 2, characterized in that, the planes defined by the length directions and the widths direction of the two
distal sections of the flat tube are substantially parallel with each other, respectively.
4. The heat exchanger according to any one of claims 1 to 3, characterized in that, the plane defined by the length direction and the width direction of the main body
section is substantially perpendicular to the axis of the collector pipe.
5. The heat exchanger according to any one of claims 1 to 3, characterized in that, the heat exchanger further comprises a partition plate, the collector pipe is provided
with a partition plate groove, and the partition plate is inserted into and connected
to the partition plate groove to divide the collector pipe into at least two chambers
that are separated from each other.
6. The heat exchanger according to claim 5, characterized in that, the collector pipe comprises a first collector pipe and a second collector pipe,
the first collector pipe is provided with the partition plate groove, the partition
plate is inserted into and connected to the partition plate groove to divide the first
collector pipe into a first chamber and a second chamber that are separated from each
other;
a plurality of flat tubes are stacked to form a core portion for heat exchange, the
core portion comprises a first core portion formed by a part of the plurality of flat
tubes, and a second core portion formed by another part of the plurality of flat tubes;
and
each of flat tubes of the first core portion has one end inserted into and connected
to the first collector pipe to communicate heat exchange channels of the flat tubes
with the first chamber, and each of flat tubes of the second core portion has one
end inserted into and connected to the first collector pipe to communicate heat exchange
channels of the flat tubes with the second chamber.
7. The heat exchanger according to claim 6, characterized in that, the core portion further comprises a third core portion formed by a third part of
the plurality of flat tubes, and the partition plate divides the second collector
pipe into a third chamber and a fourth chamber that are separated from each other;
and
each of the flat tubes of the first core portion has another end inserted into and
connected to the second collector pipe to communicate heat exchange channels of the
flat tubes with the third chamber, each of the flat tubes of the second core portion
has another end inserted into and connected to the second collector pipe to communicate
heat exchange channels of the flat tubes with the third chamber, and heat exchange
channels of flat tubes of the third core portion communicate the second chamber with
the fourth chamber.
8. The heat exchanger according to claim 5, characterized in that, a length direction (L2) of the partition plate groove is not perpendicular to an
axis of the first collector pipe or an axis of the second collector pipe.
9. The heat exchanger according to claim 6, characterized in that, a length direction of the mounting hole in the first collector pipe is substantially
parallel with the partition plate groove; or
a length direction of a mounting hole in the second collector pipe is substantially
parallel with a length direction of the partition plate groove.
10. The heat exchanger according to claim 5, characterized in that, the partition plate comprises a first surface and a second surface opposite to each
other and with relatively large areas, and a first side surface and a second side
surface connected between the first surface and the second surface; and
the first surface and the second surface are parallel with each other, a perpendicular
line of the first side surface of the partition plate is not perpendicular to a perpendicular
line of the first surface and the second surface, and a perpendicular line of the
second side surface of the partition plate is not perpendicular to the perpendicular
line of the first surface and the second surface.
11. The heat exchanger according to claim 6, characterized in that, the heat exchanger further comprises an inlet member and an outlet member;
the inlet member comprises a tube portion and a distribution portion connected thereto,
the tube portion extends from a first end of the first collector pipe to the second
chamber, the distribution portion is adjacent to the second chamber, the distribution
portion is internally provided with a flow path extending along a length direction
of the first collector pipe and a plurality of distribution holes arranged along a
length direction of the flow path, the plurality of distribution holes communicate
the flow path with the second chamber, and the tube portion is in communication with
the flow path; and
the outlet member is disposed at the first end of the first collector pipe and in
communication with the first chamber of the first collector pipe.
12. The heat exchanger according to claim 6, characterized in that, the heat exchanger further comprises a distribution tube, each of the first collector
pipe and the second collector pipe has a first end and a second end that are opposite
to each other along a length direction, the third chamber is closer to the first end
of the second collector pipe than the fourth chamber, and the distribution tube extends
from the first end of the second collector pipe through the third chamber to communicate
with the fourth chamber; and
the partition plate inserted into the partition plate groove of the second collector
pipe is a perforated partition plate.
13. The heat exchanger according to claim 6, characterized in that, the heat exchanger further comprises a connecting member, and a third collector
pipe and a fourth collector pipe arranged side by side, an axis of the third collector
pipe is substantially parallel with an axis of the fourth collector pipe, and the
third collector pipe and the fourth collector pipe are spaced apart from the first
collector pipe and the second collector pipe by a predetermined distance; and
the connecting member is disposed in a gap between the first collector pipe and the
second collector pipe arranged side by side or between the third collector pipe and
the fourth collector pipe arranged side by side, and the two collector pipes arranged
side by side are in communication with each other through the connecting member.
14. The heat exchanger according to claim 6 or 13, characterized in that, each of the third collector pipe and the fourth collector pipe has a plurality of
mounting holes to be inserted by the distal sections, respectively;
the core portion further comprises a fourth core portion formed by a part of the plurality
of flat tubes, and a fifth core portion formed by another part of the plurality of
flat tubes;
the partition plate divides the first collector pipe into a first chamber and a second
chamber separated from each other, the partition plate divides the second collector
pipe into a third chamber and a fourth chamber separated from each other;
a part of flat tubes of the fourth core portion communicates the first chamber with
an inner chamber of the third collector pipe, and another part of the flat tubes of
the fourth core portion communicates the second chamber with the inner chamber of
the third collector pipe;
a part of flat tubes of the fifth core portion communicates the third chamber with
an inner chamber of the fourth collector pipe, and another part of the flat tubes
of the fifth core portion communicates the fourth chamber with the inner chamber of
the fourth collector pipe; and
the connecting member communicates the second chamber with the fourth chamber.
15. The heat exchanger according to any one of claims 6 to 7 or claim 13, characterized in that, the connecting member is adjacent to the second chamber and the fourth chamber,
the connecting member is provided with a plurality of through-holes arranged along
a length direction of the connecting member, and the plurality of through-holes communicates
the second chamber with the fourth chamber.
16. The heat exchanger according to claim 6 or 15, characterized in that, the connecting member is disposed between the first collector pipe and the second
collector pipe, both of the first collector pipe and the second collector pipe are
cylindrical shapes, and surfaces of the connecting member to be attached to the first
collector pipe and the second collector pipe are arcuate concave surfaces.
17. The heat exchanger according to claim 13, characterized in that, the heat exchanger further comprises a connecting member disposed between the third
collector pipe and the fourth collector pipe.
18. The heat exchanger according to claim 13, characterized in that, both of the third collector pipe and the fourth collector pipe are cylindrical shapes,
and surfaces of the connecting member to be attached to the third collector pipe and
the fourth collector pipe are arcuate concave surfaces.