Technical Field of the Invention
[0001] The present invention relates to the field of aeraulic systems, in particular of
conditioning systems.
[0002] The present invention, more specifically, relates to a fluid distributor assembly
suitable for use in a heat exchanger, in particular an evaporator.
Background
[0003] Heat exchangers used in conditioning systems are devices that, in the most general
terms, comprise a casing - or mantle - inside which is housed a tube bundle. Within
the tube bundle, a service fluid flows to exchange heat with a process fluid at a
different temperature.
[0004] In some heat exchangers, such as evaporators, the service fluid is typically an evaporating
refrigerant fluid that circulates inside the tube bundle and cools the process fluid.
The latter passes externally to the tube bundle housed within the mantle, passing
through the heat exchanger.
[0005] Generally, a supply pipe feeds the heat exchanger with refrigerant fluid, engaging
it at a head unit - or manifold - thereof. In order to canalize the refrigerant fluid
into the tube bundle, the exchanger is generally equipped with a dedicated distributor
device.
[0006] For example, JPH1089885 discloses a tank for a heat exchanger wherein an inlet section
is equipped with a junction element provided with sacrificial corrosion members.
[0007] Structurally, the known distributor devices typically provide a plurality of fed
conduits each engaging a respective tubular element of the tube bundle. Solutions
of this type however have the drawback of being constructively complex due to expensive
and sophisticate mechanical machining of the fed conduits connecting structure in
order to maintain desired outlet conditions while conveying the fluid in each tube
of the bundle.
[0008] Moreover, such solution often does not guarantee uniform distribution of the flow
of refrigerant fluid in the tube bundle, significantly decreasing the performance
of the heat exchanger in which the above mentioned type of distributors are mounted.
Summary of the Invention
[0009] The technical problem placed and solved by the present invention is then to provide
a fluid distributor assembly, in particular a refrigerant fluid, within the tube bundle
of a heat exchanger that allows to overcome the above-illustrated drawbacks with reference
to the prior art.
[0010] This problem is solved by a distributor assembly according to claim 1. Additional
preferred features of the present invention are defined in the depending claims.
[0011] The fluid distributor assembly according to present invention is structurally simple
and economical to be realized, due to the presence of a lamination unit housed in
a seat of the head unit in such a way that, a mixing chamber of refrigerant fluid
that feeds the latter is defined.
[0012] More in detail, the fluid distributor assembly comprises direction means provided
with an impact surface and configured so as to direct the fluid outflowing from said
lamination unit along a substantially orthogonal direction with respect to a fluid
inlet direction into apertures of the tube plate engaging the tube bundle of the exchanger.
[0013] This solution overcome the need to provide complex, tricky and high-costly working
process of single-engagements conduits intended to engage a respective tubular element
of the tube bundle to feed each tube individually. Furthermore, the presence of said
direction means allows to create fluid agitation conditions in the mixing chamber
prior to its entry into the tube bundle. Particularly, said orthogonal flow to the
fluid inlet direction into the tube plate is generated so as to sequentially lick
the tube plate apertures and to allow each tube to suck the required amount of refrigerant,
according to a kind of dynamical "self-regulation".
[0014] In this way, a uniform distribution of the fluid flow into the tube bundle is favored
and the efficiency of the exchanger in which the fluid distributor assembly according
to the present invention is mounted significantly improves.
[0015] Other advantages, features and operation modes of the present invention will be made
apparent from the following detailed description of some embodiments thereof, given
by way of example and not for limitative purposes.
Brief Description of the Figures
[0016] Reference will be made to the figures of the annexed drawings, wherein:
- figure 1 shows an exploded view of a preferred embodiment of a fluid distributor assembly
according to the present invention;
- figure 2 shows an enlarged view of a section of figure 1, wherein a first component
- the lamination unit - of the distributor assembly is partially housed in the latter;
- figure 3 shows a side view of a portion of the distributor assembly according to the
present invention shown in figure 1;
- figure 4 shows a front view of the distributor assembly of figure 1;
- figures 5 and 6 show a section of a portion of a side view of the distributor assembly
of figure 1 respectively in a uncoupled and coupled condition;
- figures 7 and 8 respectively show an exploded view of a further embodiment of a fluid
distributor assembly according to the present invention and a section of a portion
of a side view of the distributor assembly of figure 7 in a coupled condition;
- Figures 9 and 10 respectively show an exploded view of a further embodiment of a fluid
distributor assembly according to the present invention and a section of a portion
of a side view of the distributor assembly of figure 9 in a coupled condition.
Detailed description of preferred embodiments
[0017] The present invention will be described hereinafter by referring to the above-mentioned
figures.
[0018] By referring to figure 1, an exploded view of a preferred embodiment of a fluid distributor
assembly 1, in particular a refrigerant fluid, according to the present invention
is illustrated by way of example and not for limitative purposes.
[0019] The distributor assembly 1 of the present invention is intended for a preferred use
in heat exchangers, preferably evaporators, such as direct evaporators.
[0020] In the embodiments illustrated, the distributor assembly 1 is shown in association
with a tube plate 100, the latter being an element to which the distributor assembly
1 is intended to be coupled.
[0021] The tube plate 100 is a plate with a circular geometry, exemplifying the tubular
plates used in the considered technical field. However, the tube plate 100 shown is
not limitative for the purposes of the present invention.
[0022] In particular, the distributor assembly 1 comprises a head unit 10 - or manifold
- configured to receive the refrigerant fluid inletting the heat exchanger and is
intended to be coupled to the tube plate 100 at a coupling surface - denoted with
reference A - thereof.
[0023] The head unit 10 therefore comprises at least one inlet 11 port, in fluid communication
with the inlet refrigerant fluid flow, which allows the latter to enter said head
unit 10.
[0024] Internally, the head unit 10 is thus a hollow element, that is an element in which
is defined a transit region 12 through which the inlet fluid flow passes towards the
tube plate 100.
[0025] In the showed examples, the inlet 11 in the head unit 10 are intended to be two,
however, in other embodiments, said inlet can be different in numbers, for example
one or four, depending on the operating modes of the exchanger in which the distributor
assembly according to the present invention will be mounted.
[0026] Typically, the coupling surface A - also with reference to the shown examples - is
a peripheral region of the head unit 10 and of the respective tube plate 100, shaped
so as to flange the above-mentioned two elements together.
[0027] In the illustrated examples, this peripheral region defines a circular crown, however,
different coupling geometries are possible.
[0028] In any case, and as well-known to the skilled person in the field, the tube plate
100 of a heat exchanger comprises a zone having a plurality of apertures - or housings
101 - configured to put in fluid communication said head inlet 11 and tubes of the
exchanger.
[0029] That is, each aperture of said plurality is suitable for coupling with respective
tubular elements (not shown in the figures) within which, in use, the refrigerant
fluid flows.
[0030] The plurality of housings 101 - which in the examples are a plurality of through
holes 101a of the plate 100 - are configured to allow the refrigerant fluid inletting
the head unit 10 passing towards tubular elements which typically engage with their
terminal end the plate 100 at said housings, and which form the tube bundle housed
within the exchanger's casing.
[0031] For the sake of an easy depiction, in showed examples said housings 101 are obtained
only on a portion of the plate 100, particularly on the portion corresponding to one
of the two inlet 11 of the head unit 10. However, it is to be understood that the
distributor assembly 1 can be coupled with a tube plate 100 having a housings distribution
different from that one illustrated.
[0032] Also with reference to figure 5 and 6, the head unit 10 is further provided with
a seat 13 adapted to receive a lamination unit 20, in particular of a plate-shaped
geometry, which lamination unit 20 is positioned in said seat 13 so as to divide the
transit region 12 of the head unit 10 in a first collecting chamber 14 and in an outlet
region 15 of the refrigerant fluid.
[0033] The plate-shaped lamination unit 20 comprises an inlet surface 21, an outlet surface
22 and one or more openings 23 to allow the fluid entering the head unit 10 to pass
there through.
[0034] The first collecting chamber 14 is comprised between the inlet 11 adapted to receive
the fluid entering the head unit 10 and said inlet surface 21.
[0035] The outlet surface 22 of the plate-shaped lamination unit 20 faces toward said outlet
region 15 of the refrigerant fluid.
[0036] Said one or more openings 23 are appropriately sized to obtain a pressure drop across
the lamination unit 20.
[0037] The overall configuration of the distributor assembly 1 being such that, in condition
of said head unit 10 coupled to the tube plate 100, a second mixing chamber 30 is
defined at said outlet region 15 among said coupling surface A, said lamination unit
20 and the tube plate 100, so that the fluid, in use, sequentially crosses the first
collecting chamber 14, the one or more openings 23 in the lamination unit 20 and subsequently
the second mixing chamber 30.
[0038] The fluid is so administered into tubes connected to the tube plate 100.
[0039] The first collecting chamber 14 and the second mixing chamber 30 are preferably consecutive
with each other and said outlet region 15 is adjacent to said outlet surface 22.
[0040] In particular, the first collecting chamber 14 and the second mixing chamber 30 are
preferably arranged in sequence with respect to a fluid flow direction
α as defined by the head inlet 11.
[0041] Under operating conditions of the distributor assembly 1, the lamination unit 20
thus allows expansion of the refrigerant fluid in the second mixing chamber 30 with
respect to the condition in which the fluid is in the first collecting chamber 14.
[0042] More in detail, and with reference to figure 2 and 6, the refrigerant fluid flow
F entering the inlet 11 of the head unit 10 reaches the lamination unit 20 and crosses
said one or more openings 23 of the latter being subjected to a pressure drop causing
it to expand into the second mixing chamber 30 and to generate a turbulent flow regime.
[0043] The presence of said mixing chamber 30 permits to improve the refrigerant fluid flow
F' conditions before its inlet into the exchanger tube bundle, namely achieving a
uniform mixing of the latter entering the through holes 101a of the tube plate 100.
[0044] The lamination unit 20, as shown in the examples, is locked to the seat 13 of the
head unit 10 onto shoulders 13a thereof. It is preferably fixed to the latter in a
removable manner, by means of fastening means known to the skilled person in the field.
[0045] According to one embodiment a spacer is configured to allow the fastening of the
lamination unit 20 to the seat 13, wherein said spacer comprises a first and a second
portion.
[0046] The first portion is internally hollow and configured to engage a through hole 101a
of the tube plate 100 and the second portion remains outside of the tube plate in
such a way as to maintain the lamination unit in abutment onto said shoulders 13a
of the head unit 10, spaced from the tube plate 100.
[0047] On a side of said second portion, an opening in fluid communication with said first
portion is obtained, in order to allow the refrigerant fluid flowing toward the through
hole 101a to enter thereof.
[0048] More than one spacer can be provided, the number of which is function of the operative
condition of the distributor. Preferably, said spacers are provided in a homogeneous
chessboard-like distribution.
[0049] In a preferred embodiment, the lamination unit 20 is however secured in such a way
as to make the collecting chamber 14 hermetic, to avoid possible undesired fluid leaks
towards the second mixing chamber 30.
[0050] In other embodiments, the lamination unit 20 can also be made in a single piece with
the head unit 10 at said seat 13.
[0051] Preferably, with reference to the examples illustrated in the figures, the plate-shaped
lamination unit 20 - or at least its outlet surface 22 - lies on a plane substantially
parallel to the coupling surface A with the tube plate 100. According to said configuration,
advantageously the fluid F' outflows from the lamination unit 20 at equidistant points
from the through holes 101a of said tube plate 100, further favoring a uniform mixing
of the fluid F' entering the latter.
[0052] With reference to figure 2 and 6, said one or more openings of the lamination unit
20, are denoted by reference 23. In the examples illustrated, said openings 23 comprise
a plurality of circular geometric through holes, and are apt to put in fluid communication
the first collecting chamber 14 with the second mixing chamber 30.
[0053] Alternative embodiments can also provide that at least one of said one or more openings
23 comprise an elongated shape, for examples like a single slot, or through holes
of other geometric shapes than the circular shape.
[0054] Said one or more openings may have, for example, a passageway configured so as to
impart a substantially orthogonal direction to the fluid F' outflowing from the outlet
surface 22 with respect to the direction of the fluid F inletting the lamination unit
20.
[0055] In any case, the amount and geometry of said one or more openings is a function of
the operating conditions of the exchanger and of the desired fluid F pressure drop
across the lamination unit 20.
[0056] Said one or more openings 23 are preferably distributed along a peripheral edge of
the plate-shaped lamination unit 20, preferably in such a way as to do not directly
face one or more of the through holes 101a of the tube plate 100, as provided by the
embodiment of figures 7 and 8.
[0057] Preferably, said one or more openings 23 are arranged laterally with respect to an
input fluid flow F having a direction
α as imparted by said head inlet 11.
[0058] It is to be appreciated that the fluid distributor assembly 1 further comprises direction
means provided with an impact surface 241, 26 configured so as to direct the fluid
outflowing from said outlet surface 22 along a substantially orthogonal direction
with respect to a fluid inlet direction
β into said apertures 101.
[0059] Said direction means allow to generate an orthogonal flow F' with respect to the
fluid inlet direction
β into the tube plate 100 so as to sequentially lick said apertures 101.
[0060] Each tube of the tube bundle of the exchanger is therefore able to suck the required
amount of refrigerant, according to a kind of dynamical "self-regulation".
[0061] In general terms, said orthogonal flow F' with respect to said direction
β is achieved by providing an antagonistic element positioned downstream the expansion
of the flow outflowing the outlet surface 22.
[0062] With reference to the embodiment shown in figures 7 and 8, the apertures 101 of the
tube plate 100 are arranged laterally with respect to a positioning of each of said
one or more openings 23 of the lamination unit 20.
[0063] According to said positioning, said direction means comprises an impact surface 26
of the tube plate 100 facing toward said second mixing chamber 30.
[0064] In other words, the mutual position of each of said apertures 101 and each of said
one or more openings 23 is such that they do not directly face to each other, namely
said one or more openings 23 face directly towards a portion of the tube plate 100
lacking of apertures 101a.
[0065] The flow outflowing from the latter collides with the impact surface 26 that is configured
to give to the flow F' an orthogonal direction to the fluid inlet direction
β into the apertures 101.
[0066] Preferably said impact surface 26 of the tube plate 100 comprises said coupling surface
A or lies in a plane comprising the latter, as illustrated with reference to the embodiment
shown in figure 8.
[0067] In one embodiment - not illustrated - the surface of the tube plate 100 facing toward
the second mixing chamber 30 is provided with apertures 101 distributed on opposite
sides. In this case, said impact surface 26 is positioned in a central region of the
tube plate 100, namely between said apertures 101.
[0068] Accordingly to this embodiment, the one or more openings 23 of the lamination unit
20 are arranged in such a way as to face said central region of the tube plate 100.
[0069] Preferably, the impact surface 26 is arranged along a substantially orthogonal direction
with respect to a fluid inlet direction into said apertures 101.
[0070] According to this feature, the direction of the refrigerator fluid flow entering
the apertures 101 is identifiable by a coordinate system of three axes mutually orthogonal
to each other, as shown in the figures.
[0071] The fluid inlet direction
β into the apertures 101 is parallel to axis
z that is substantially orthogonal to axis
x and
y which comprise the plane containing the fluid F' direction, as directed by the impact
surface 26.
[0072] Although in the examples the refrigerant fluid flow F enters the inlet 11 along the
direction α that coincides with a direction parallel to the z axis, other embodiments
may have different directions of the fluid flow F that enters the inlet 11 than the
one shown.
[0073] Referring now to figure 3 and 4, wherein in the latter figure said tube plate 100
is represented in transparency to show the lamination unit 20.
[0074] In this example, referring also to figures 5 and 6, the positioning of the openings
23 is such that the they directly faces towards one or more of the through holes 101a
of the tube plate 100.
[0075] According to this embodiment, said direction means comprises flow deviation members
24, 25 arranged onto the outlet surface 22 of said lamination unit 20.
[0076] Preferably, said flow deviation members comprises a wall 24 configured in such a
way as to prevent a direct channeling of the fluid F' into the through holes 101a
of the tube plate 100.
[0077] With further reference to figure 2, said wall 24 protrudes from the outlet surface
22 of the lamination unit 20 in correspondence of its openings 23, specifically it
is arranged laterally to said one or more openings 23.
[0078] Preferably, the wall 24 comprises said impact surface 241 positioned in front of
said one or more openings and in such a way as to hinder the fluid flow - outflowing
from said one or more openings 23 - to directly enter into at least one of the through
holes 101.
[0079] Preferably, said wall 24 has a "L"-shaped geometry, provided with a proximal lateral
portion 242 connected to the impact surface 241.
[0080] The impact surface 241 is configured as a distal portion of said "L"-shaped geometry
facing toward said one or more openings and arranged substantially parallel to and
spaced from the outlet surface 22.
[0081] In this example, the flow direction of the fluid F' is forced into a region of the
second mixing chamber 30 comprising the openings 23 and only one of the sides of the
plane comprised by the
x, y axis, as defined by the interception with the proximal lateral portion 242.
[0082] In other words, said proximal lateral portion 242 operates such as a barrier.
[0083] Different geometries of said wall 24 are possible. Preferably the wall 24 is configured
so as to confer to the fluid F' a direction substantially parallel to the development
direction of the outlet surface 22.
[0084] In a further embodiment - not shown in the figures - said flow deviation members
comprise an impact surface provided with one or more connecting portions configured
to connect the impact surface to said outlet surface 22 in such a way as to allow
the fluid F' outflowing along each of the direction comprised in the
x, y plane.
[0085] For example, the impact surface can be positioned in front of and spaced from the
openings 23, in such a way as to cover them entirely. Said impact surface can be connected
to the outlet surface 22 by means of two end opposite walls.
[0086] Preferably, each of said two end opposite walls develops along a direction parallel
to each other and to
x axis and/or along an orthogonal direction with respect to the distribution of the
openings 23.
[0087] More preferably, said impact surface can be connected to the outlet surface 22 by
means of said two end opposite walls and by a further wall interposed between them,
also in order to confer a structural reinforcement to the connection.
[0088] Advantageously, in this way the fluid F' is therefore allowed to outflowing from
the lamination unit along a substantially orthogonal direction with respect to the
fluid inlet direction
β into apertures of the tube plate 100, without being blocked by side walls that narrow
its circulation inside the second mixing chamber 30.
[0089] In any case, embodiments may be provided with said wall 24 even though said one or
more openings 23 of the lamination unit 20 are arranged such as to do not directly
face the through holes 101a of the tube plate 100 when the distributor assembly 1
is flanged to the latter.
[0090] Preferably, said flow deviation members further comprises one or more ridges 25 -
or turbo-stroke ridges - embossed on the outlet surface 22 of the lamination unit
20.
[0091] Said one or more ridges 25 are preferably arranged along an orthogonal transvers
direction relative to the direction of fluid outflowing from said one or more openings
23 of the lamination unit 20.
[0092] Said one or more ridges 25 may protrude from the outlet surface 22 with different
heights and have sections with polygonal or curvilinear geometries.
[0093] Said ridges can also be made in a single piece with the lamination unit 20 or fixed
to the latter, the amount of which is function of the desired outlet conditions to
be conferred to the fluid flow F'.
[0094] Said ridges can be also designed for the purpose to gain a structural reinforcement
of the lamination unit 20 and eventually can be configured as spacer between the tube
plate 100 and the outlet surface 22.
[0095] With now reference to the embodiment shown in figure 9 and 10, ridges 25' are arranged
along a longitudinal direction with respect to the flow F'. The flow F' is orthogonal
to the fluid inlet direction
β into the tube plate 100 so as to sequentially lick said apertures 101.
[0096] Accordingly to this embodiment, said ridges 25' are spaced from and parallel to each
other in such a way as to define a plurality of lanes 25".
[0097] Each of said ridges 25' has a length preferably shorter than the length of the lamination
unit 20, considering the latter length comprised between the shoulders 13a of the
head unit 10 and parallel to the direction of the fluid flow F'.
[0098] In the example depicted there are three ridges 25' defining four lanes 25".
[0099] However, other embodiments may be provided with different numbers of ridges 25' and
therefore different number of lanes 25".
[0100] In other words, the ridges 25' allow to divide the second mixing chamber 30 in such
a way as to constrain the fluid F', outflowing from said one or more openings 23,
in a plurality of delimited regions.
[0101] Each region of said plurality preferably developing along a main developing direction
that is substantially parallel to the direction x, as above defined and also with
reference to figure 2 and 10.
[0102] Whereas a uniform mixture of the fluid is achieved after the expansion through the
lamination unit 20 and, for example, under those particular operating conditions wherein
the fluid does not reach quickly the through holes 101a of the tube plate 100, the
presence of ridges 25' advantageously allows to avoid the fluid to move towards and
stagnate into an area 15' of the second mixing chamber 30 which is far located from
the openings 23 of tube plate 100.
[0103] At the same time, a configuration of the ridges 25' as above described allows the
fluid to reach every point of the second mixing chamber 30 as well. Accordingly, each
of the ridges 25' preferably projects from the outlet surface 22 in such a way as
to maintain the latter and the tube plate 100 spaced therebetween.
[0104] Said spacing, advantageously, allows the fluid to reach every tubular member of the
tube bundle even in case of a bad distribution upstream of said one or more openings
23.
[0105] As well as described for a particular embodiment of ridges 25, also ridges 25' can
be configured as spacer between the tube plate 100 and the outlet surface 22. Said
spacing can be obtained, for example, by providing a battlement shape along the length
of ridges 25' properly dimensioned to contact in selected points the tube plate 100.
[0106] The present invention has hereto been described with reference to preferred embodiments
thereof. It is understood that other embodiments might exist, all falling within the
concept of the same invention, as defined by the protective scope of the claims hereinafter.
1. A fluid distributor assembly (1), in particular for a refrigerant fluid, for use in
a heat exchanger, which fluid distributor (1) comprises:
- a head unit (10), comprising a head inlet (11) configured to receive the fluid fed
into the exchanger;
- a tube plate (100) coupled to said head unit (10) at a coupling surface (A) thereof
and provided with apertures (101) configured to put in fluid communication said head
inlet (11) and tubes of the exchanger;
characterised in that the fluid distributor assembly (1) further comprises
- a plate-shaped lamination unit (20) having an inlet surface (21) and an outlet surface
(22) and further comprising one or more openings (23) to allow the inlet fluid to
pass therethrough,
wherein the head unit (10) is provided with a seat (13) which fixedly receives said
lamination unit (20), the overall configuration of the distributor assembly (1) being
such that the fluid sequentially crosses a first collecting chamber (14) defined between
said inlet surface (21) and said head inlet (11), said one or more openings (23) and
a second mixing chamber (30) defined between said coupling surface (A) and said outlet
surface (22), and it is so administered into the tubes of said tube plate (100),
wherein the lamination unit (20) allows an expansion of the fluid in the second mixing
chamber (30) with respect to the first collecting chamber (14),
and wherein the fluid distributor assembly (1) further comprises direction means provided
with an impact surface (241, 26) arranged downstream of said openings (23), which
impact surface (241, 26) is configured so as to direct the fluid outflowed from said
openings (23) along a substantially orthogonal direction with respect to a fluid inlet
direction into said apertures (101).
2. The fluid distributor assembly (1) according to claim 1, wherein said apertures (101)
are arranged laterally with respect to a positioning of said one or more openings
(23), and wherein said impact surface (26) is a surface of the tube plate (100) facing
toward said second mixing chamber (30).
3. The fluid distributor assembly (1) according to claim 2, wherein said impact surface
(26) is arranged along a substantially orthogonal direction with respect to a fluid
inlet direction into said apertures (101).
4. The fluid distributor assembly (1) according to claim 2 or 3, wherein said impact
surface (26) lies on a plane comprising said coupling surface (A).
5. The fluid distributor assembly (1) according any one of the preceding claims, wherein
said direction means comprises flow deviation members (24, 25, 25') arranged onto
the outlet surface (22) of said lamination unit (20).
6. The fluid distributor assembly (1) according to claim 5, wherein said flow deviation
members comprise a wall (24) arranged laterally to said one or more openings (23)
and configured in such a way as to confer to the fluid a motion having a direction
substantially parallel to said outlet surface (22).
7. The fluid distributor assembly (1) according to claim 6, wherein said wall (24) is
substantially "L" shaped and comprises said impact surface (241).
8. The fluid distributor assembly (1) according to claim 5, wherein said flow deviation
members comprise two opposite end walls configured to connect said impact surface
to said outlet surface (22), said two opposite connecting walls developing along a
direction parallel to each other and/or orthogonal with respect to a distribution
of said one or more openings (23).
9. The fluid distributor assembly (1) according to any claim from 5 to 8, wherein said
flow deviation members comprises one or more ridges (25) arranged along an orthogonal
transverse direction relative to a direction of fluid outflowing as defined by said
one or more openings (23).
10. The fluid distributor assembly (1) according to any claim from 5 to 8, wherein said
flow deviation members comprises ridges (25') arranged along a longitudinal transverse
direction relative to a direction of fluid outflowing as defined by said one or more
openings (23), wherein said ridges (25') are spaced from and parallel to each other
in such a way as to define a plurality of lanes (25") therebetween.
11. The fluid distributor assembly (1) according to any one of the preceding claims, wherein
said one or more openings (23) are distributed along a peripheral edge of said lamination
unit (20).
12. The fluid distributor assembly (1) according to any one of the preceding claims, wherein
said one or more openings (23) are arranged laterally with respect to an input fluid
flow as directed by said head inlet (11).
13. The fluid distributor assembly (1) according to any one of the preceding claims, wherein
said one or more openings (23) comprise holes with a circular geometry.
14. The fluid distributor assembly (1) according to any one of the preceding claims, wherein
at least one of said one or more openings (23) comprise an elongated shape, in particular
a single slot.
15. The fluid distributor assembly (1) according to any one of the preceding claims, wherein
said lamination unit (20) is a plate-shaped element made in a single piece with said
head unit (10).
16. The fluid distributor assembly (1) according to any one of the preceding claims, wherein
the plate-shaped lamination unit (20) lies on a plane substantially parallel to a
plane comprising the coupling surface (A).
17. The fluid distributor assembly (1) according to any one of the preceding claims, wherein
said first collecting chamber (14) and said second mixing chamber (30) are arranged
in sequence with respect to a fluid flow direction as defined by the head inlet (11).
18. A heat exchanger (100) comprising a fluid distributor assembly (1) according to any
one of the preceding claims.
1. Fluidverteilungsanordnung (1), insbesondere für ein Kühlfluid zur Nutzung in einem
Wärmetauscher, wobei der Fluidverteiler (1) umfasst:
- eine Kopfeinheit (10) mit einem Kopfeinlass (11), der konfiguriert ist, um ein Fluid
aufzunehmen, das in den Tauscher gegeben wird;
- eine Röhrenplatte (100), die mit der Kopfeinheit (10) an einer Kopplungsoberfläche
(A) davon gekoppelt ist und mit Aperturen (101) versehen ist, die konfiguriert sind,
um sie in Fluidkommunikation mit dem Kopfeinlass (11) und den Röhren des Tauschers
zu setzen;
dadurch gekennzeichnet, dass die Fluidverteilungsanordnung (1) weiterhin umfasst
- eine plattenförmige Laminateinheit (20) mit einer Einlassoberfläche (21) und einer
Auslassoberfläche (22), weiterhin umfassend eine oder mehrere Öffnungen (23) zum Ermöglichen,
dass Einlassfluid durch diese hindurchgeht,
wobei die Kopfeinheit (10) mit einem Sitz (13) ausgestattet ist, der die Laminateinheit
(20) fest aufnimmt, wobei die Gesamtkonfiguration der Verteilungsanordnung (1) derart
ist, dass das Fluid sequentiell eine erste Sammelkammer (14), die zwischen der Einlassoberfläche
(21) und dem Kopfeinlass (11) definiert ist, die eine oder die mehreren Öffnungen
(23) und eine zweite Mischkammer (30) kreuzt, die zwischen der Kopplungsoberfläche
(A) und der Auslassoberfläche (22) definiert ist, wobei es so in die Röhren der Röhrenplatte
(100) gegeben wird,
wobei die Laminateinheit (20) eine Expansion des Fluids in der zweiten Mischkammer
(30) mit Bezug auf die erste Sammelkammer (14) ermöglicht,
und wobei die Fluidverteilungsanordnung (1) weiterhin Richtungsmittel umfasst, die
mit einer Stoßoberfläche (241, 26) ausgestattet sind, die stromabwärts von den Öffnungen
(23) angeordnet ist, wobei die Stoßoberfläche (241, 26) so konfiguriert ist, dass
sie das Fluid, das aus den Öffnungen (23) herausfließt, entlang einer im Wesentlichen
orthogonalen Richtung mit Bezug auf eine Fluideinlassrichtung in die Aperturen (101)
leitet.
2. Fluidverteilungsanordnung (1) nach Anspruch 1, wobei die Aperturen (101) seitlich
mit Bezug auf eine Positionierung der einen oder der mehreren Öffnungen (23) angeordnet
sind, wobei die Stoßoberfläche (26) eine Oberfläche der Röhrenplatte (100) ist, die
in Richtung auf die zweite Mischkammer (30) weist.
3. Fluidverteilungsanordnung (1) nach Anspruch 2, wobei die Stoßoberfläche (26) entlang
einer im Wesentlichen orthogonalen Richtung mit Bezug auf eine Fluideinlassrichtung
in die Aperturen (101) angeordnet ist.
4. Fluidverteilungsanordnung (1) nach Anspruch 2 oder 3, wobei die Stoßoberfläche (26)
auf einer Ebene mit der Kopplungsoberfläche (A) liegt.
5. Fluidverteilungsanordnung (1) nach einem der vorhergehenden Ansprüche, wobei die Richtungsmittel
Flussableitungselemente (24, 25, 25') umfassen, die auf der Auslassoberfläche (22)
der Laminateinheit (20) angeordnet sind.
6. Fluidverteilungsanordnung (1) nach Anspruch 5, wobei die Flussableitungselemente eine
Wand (24) umfassen, die seitlich zu der einen oder den mehreren Öffnungen (23) angeordnet
ist und auf solche Weise konfiguriert ist, dass sie auf das Fluid eine Bewegung überträgt,
die eine Richtung aufweist, welche im Wesentlichen parallel zu der Auslassoberfläche
(22) ist.
7. Fluidverteilungsanordnung (1) nach Anspruch 6, wobei die Wand (24) im Wesentlichen
"L"-förmig ist und die Stoßoberfläche (241) umfasst.
8. Fluidverteilungsanordnung (1) nach Anspruch 5, wobei die Flussablenkungselemente zwei
entgegengesetzte Endwände umfassen, die konfiguriert sind, um die Stoßoberfläche mit
der Auslassoberfläche (22) zu verbinden, wobei die zwei entgegengesetzten Verbindungswände
sich entlang einer Richtung parallel zueinander und/oder senkrecht mit Bezug auf eine
Verteilung von der einen oder den mehreren Öffnungen (23) entwickeln.
9. Fluidverteilungsanordnung (1) nach einem der Ansprüche 5 bis 8, wobei die Flussablenkungselemente
eine oder mehrere Rippen (25) umfassen, die entlang einer orthogonalen transversalen
Richtung relativ zu einer Richtung von herausfließendem Fluid angeordnet sind, wie
durch die eine oder die mehreren Öffnungen (23) definiert.
10. Fluidverteilungsanordnung (1) nach einem der Ansprüche 5 bis 8, wobei die Flussablenkungselemente
Rippen (25') umfassen, die entlang einer longitudinalen transversalen Richtung relativ
zu einer Richtung von herausfließendem Fluid angeordnet sind, wie durch die eine oder
die mehreren Öffnungen (23) definiert, wobei die Rippen (25') voneinander beabstandet
und zueinander parallel sind, auf solche Weise, dass eine Vielzahl von Spuren (25")
dazwischen definiert wird.
11. Fluidverteilungsanordnung (1) nach einem der vorhergehenden Ansprüche, wobei die eine
oder die mehreren Öffnungen (23) entlang einer peripheren Kante der Laminateinheit
(20) verteilt sind.
12. Fluidverteilungsanordnung (1) nach einem der vorhergehenden Ansprüche, wobei die eine
oder die mehreren Öffnungen (23) seitlich mit Bezug auf einen Eingangsfluidfluss angeordnet
sind, wie durch den Kopfeinlass (11) geleitet.
13. Fluidverteilungsanordnung (1) nach einem der vorhergehenden Ansprüche, wobei die eine
oder die mehreren Öffnungen (23) Löcher mit einer kreisförmigen Geometrie umfassen.
14. Fluidverteilungsanordnung (1) nach einem der vorhergehenden Ansprüche, wobei wenigstens
eine von der einen oder den mehreren Öffnungen (23) eine längliche Form umfasst, insbesondere
einen Einzelschlitz.
15. Fluidverteilungsanordnung (1) nach einem der vorhergehenden Ansprüche, wobei die Laminateinheit
(20) ein plattenförmiges Element ist, das einstückig mit der Kopfeinheit (10) gefertigt
ist.
16. Fluidverteilungsanordnung (1) nach einem der vorhergehenden Ansprüche, wobei die plattenförmige
Laminateinheit (20) auf einer Ebene liegt, die im Wesentlichen parallel zu einer Ebene
ist, die die Kopplungsoberfläche (A) umfasst.
17. Fluidverteilungsanordnung (1) nach einem der vorhergehenden Ansprüche, wobei die erste
Sammelkammer (14) und die zweite Mischkammer (30) in Folge mit Bezug auf eine Fluidflussrichtung
angeordnet sind, wie durch den Kopfeinlass (11) definiert.
18. Wärmetauscher (100) mit einer Fluidverteilungsanordnung (1) nach einem der vorhergehenden
Ansprüche.
1. Ensemble de distributeur de fluide (1), en particulier pour un fluide réfrigérant,
destiné à être utilisé dans un échangeur de chaleur, lequel distributeur de fluide
(1) comprend :
une unité de tête (10) comprenant une entrée de tête (11) configurée pour recevoir
le fluide amené dans l'échangeur ;
une plaque de tubes (100) couplée à ladite unité de tête (10) au niveau de sa surface
de couplage (A) et prévue avec des ouvertures (101) configurées pour mettre en communication
de fluide ladite entrée de tête (11) et les tubes de l'échangeur ;
caractérisé en ce que l'ensemble de distributeur de fluide (1) comprend en outre :
une unité de stratification en forme de plaque (20) ayant une surface d'entrée (21)
et une surface de sortie (22) et comprenant en outre une ou plusieurs ouvertures (23)
pour permettre le passage du fluide d'entrée à travers ces dernières,
dans lequel l'unité de tête (10) est prévue avec un siège (13) qui reçoit de manière
fixe ladite unité de stratification (20), la configuration globale de l'ensemble de
distributeur (1) étant telle que le fluide traverse de manière séquentielle une première
chambre de collecte (14) définie entre ladite surface d'entrée (21) et ladite entrée
de tête (11), lesdites une ou plusieurs ouvertures (23) et une seconde chambre de
mélange (30) définie entre ladite surface de couplage (A) et ladite surface de sortie
(22), et elle est administrée ainsi dans les tubes de ladite plaque de tubes (100),
dans lequel l'unité de stratification (20) permet une expansion du fluide dans une
seconde chambre de mélange (30) par rapport à la première chambre de collecte (14),
et dans lequel l'ensemble de distributeur de fluide (1) comprend en outre un moyen
de direction prévu avec une surface d'impact (241, 26) agencée en aval desdites ouvertures
(23), laquelle surface d'impact (241, 26) est configurée afin de diriger le fluide
qui sort desdites ouvertures (23) le long d'une direction sensiblement orthogonale
par rapport à une direction d'entrée de fluide dans lesdites ouvertures (101).
2. Ensemble de distributeur de fluide (1) selon la revendication 1, dans lequel lesdites
ouvertures (101) sont agencées latéralement par rapport à un positionnement desdites
une ou plusieurs ouvertures (23), et dans lequel ladite surface d'impact (26) est
une surface de la plaque de tubes (100) orientée vers ladite seconde chambre de mélange
(30).
3. Ensemble de distributeur de fluide (1) selon la revendication 2, dans lequel ladite
surface d'impact (26) est agencée le long d'une direction sensiblement orthogonale
par rapport à une direction d'entrée de fluide dans lesdites ouvertures (101).
4. Ensemble de distributeur de fluide (1) selon la revendication 2 ou 3, dans lequel
ladite surface d'impact (26) se trouve sur un plan comprenant ladite surface de couplage
(A).
5. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications précédentes,
dans lequel ledit moyen de direction comprend des éléments de déviation d'écoulement
(24, 25, 25') agencés sur la surface de sortie (22) de ladite unité de stratification
(20).
6. Ensemble de distributeur de fluide (1) selon la revendication 5, dans lequel lesdits
éléments de déviation d'écoulement comprennent une paroi (24) agencée latéralement
par rapport auxdites une ou plusieurs ouvertures (23) et configurée afin de conférer
au fluide, un mouvement ayant une direction sensiblement parallèle à ladite surface
de sortie (22).
7. Ensemble de distributeur de fluide (1) selon la revendication 6, dans lequel ladite
paroi (24) est sensiblement en forme de « L » et comprend ladite surface d'impact
(241).
8. Ensemble de distributeur de fluide (1) selon la revendication 5, dans lequel lesdits
éléments de déviation d'écoulement comprennent deux parois d'extrémité opposées configurées
pour raccorder ladite surface d'impact à ladite surface de sortie (22), lesdites deux
parois de raccordement opposées se développant le long d'une direction parallèle l'une
avec l'autre et/ou orthogonale par rapport à une distribution desdites une ou plusieurs
ouvertures (23).
9. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications 5
à 8, dans lequel lesdits éléments de déviation d'écoulement comprennent une ou plusieurs
crêtes (25) agencées le long d'une direction transversale orthogonale par rapport
à une direction de sortie de fluide, telle que définie par lesdites une ou plusieurs
ouvertures (23).
10. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications 5
à 8, dans lequel lesdits éléments de déviation d'écoulement comprennent des crêtes
(25') agencées le long d'une direction transversale longitudinale par rapport à une
direction de sortie de fluide telle que définie par lesdites une ou plusieurs ouvertures
(23), dans lequel lesdites crêtes (25') sont espacées et parallèles entre elles afin
de définir une pluralité de voies (25") entre elles.
11. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications précédentes,
dans lequel lesdites une ou plusieurs ouvertures (23) sont réparties le long d'un
bord périphérique de ladite unité de stratification (20).
12. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications précédentes,
dans lequel lesdites une ou plusieurs ouvertures (23) sont agencées latéralement par
rapport à un écoulement de fluide d'entrée tel que défini par ladite entrée de tête
(11).
13. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications précédentes,
dans lequel lesdites une ou plusieurs ouvertures (23) comprennent des trous avec une
géométrie circulaire.
14. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications précédentes,
dans lequel au moins l'une desdites une ou plusieurs ouvertures (23) comprend une
forme allongée, en particulier une fente unique.
15. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications précédentes,
dans lequel ladite unité de stratification (20) est un élément en forme de plaque
réalisé d'un seul tenant avec ladite unité de tête (10).
16. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications précédentes,
dans lequel ladite unité de stratification en forme de plaque (20) se trouve sur un
plan sensiblement parallèle à un plan comprenant la surface de couplage (A).
17. Ensemble de distributeur de fluide (1) selon l'une quelconque des revendications précédentes,
dans lequel ladite première chambre de collecte (14) et ladite seconde chambre de
mélange (30) sont agencées en séquence par rapport à une direction d'écoulement de
fluide telle que définie par l'entrée de tête (11).
18. Echangeur de chaleur (100) comprenant un ensemble de distributeur de fluide (1) selon
l'une quelconque des revendications précédentes.