CROSS REFERENCES TO RELATED APPLICATION
[0001] The present application is based on and claims priority to Chinese patent application
No.
201810578650.2, filed on June 7, 2018, the content of which is hereby incorporated by reference in its entirety.
TECHNICAL FIELD
[0002] The present invention relates to the field of air purification technology, and particularly
to a dust collection electrode assembly, an air purification device and a control
method thereof.
BACKGROUND
[0003] As the environmental problems become more and more serious, an air purifier has become
a must-have household appliance for many families. The air purifier is usually divided
into a filter type air purifier and an electrostatic type air purifier. The filter
type air purifier uses a filter screen to filter particulate impurities such as PM2.5
and the like in the air. The filter screen in this type of air purifier needs to be
regularly replaced, which increases the usage cost. The electrostatic type air purifier
purifies the air in an electric purification mode, and there is no need to replace
its consumables as long as its internal electrode plates are cleaned regularly, thereby
saving the usage cost.
[0004] Due to the high dust collection efficiency of the electrostatic air purifier, the
dust collection capability of the electrode plate is easily weakened due to dust accumulation.
Therefore, a user needs to frequently clean the electrode plate to ensure the purification
effect of the purifier, which affects the user experience.
SUMMARY
[0005] According to an embodiment of the present invention, a dust collection electrode
assembly applied to an air purification device is provided, the air purification device
further includes a generation electrode assembly, the dust collection electrode assembly
includes a dust collection electrode, the dust collection electrode is moveable to
change at least one of a position state and an orientation state of the dust collection
electrode relative to the generation electrode assembly.
[0006] In an embodiment, the dust collection electrode assembly further includes a dust
collection electrode support structure, the dust collection electrode is moveable
relative to the dust collection electrode support structure.
[0007] In an embodiment, the dust collection electrode assembly applied to an air purification
device is provided, the air purification device further includes a generation electrode
assembly, the dust collection electrode assembly includes a dust collection electrode
and a dust collection electrode support structure, the dust collection electrode is
moveable relative to the dust collection electrode support structure to change at
least one of a position state and an orientation state of the dust collection electrode
relative to the generation electrode assembly.
[0008] In an embodiment, the dust collection electrode includes an electrode plate body
and a plurality of dust collection structures provided on the electrode plate body,
when the dust collection electrode is in different position states and/or orientation
states relative to the generation electrode assembly, the generation electrode assembly
is arranged opposite to different dust collection structures.
[0009] In an embodiment, the plurality of dust collection structures are respectively provided
on a first side edge and a second side edge of the electrode plate body, the first
side edge is opposite to the second side edge.
[0010] In an embodiment, a dust collection structure includes a protrusion provided on a
side edge of the electrode plate body.
[0011] In an embodiment, the protrusion extends in a direction same as an extension direction
of the side edge, and a cross section of the protrusion is a portion of a circle.
[0012] In an embodiment, the dust collection electrode support structure includes a frame
structure, the dust collection electrode is provided in the frame structure and is
turnable around an axis parallel to the first side edge, such that the dust collection
electrode turnable between a first position and a second position; in the first position,
a dust collection structure on the first side edge is opposite to the generation electrode
assembly; and in the second position, a dust collection structure on the second side
edge is opposite to the generation electrode assembly.
[0013] In an embodiment, the electrode plate body further includes a third side edge and
a fourth side edge connected to the first side edge and the second side edge, a rotating
shaft is provided on the third side edge and the fourth side edge, the frame structure
is provided with rotating shaft holes matching the rotating shaft; or rotating shaft
holes are provided on the third side edge and the fourth side edge, the frame structure
is provided with a rotating shaft matching the rotating shaft holes.
[0014] In an embodiment, the dust collection electrode assembly further includes a drive
device configured to drive the dust collection electrode to turn between the first
position and the second position.
[0015] In an embodiment, a plurality of dust collection electrodes are arranged side by
side, the dust collection electrode assembly further includes a transmission mechanism,
and the drive device drives the plurality of dust collection electrodes to turn synchronously
through the transmission mechanism.
[0016] In an embodiment, the transmission mechanism includes a gear transmission mechanism
or a double crank mechanism.
[0017] In an embodiment, the dust collection electrode has a retractable structure which
is retractable in a direction parallel to the third side edge, the retractable structure
is configured to retract when turning and stretch to an original shape and size after
the turning is completed.
[0018] In an embodiment, the dust collection electrode is retracted electrically; or
the dust collection electrode assembly further includes an offset member, the dust
collection electrode includes a fixed portion and a movable portion which is movable
relative to the fixed portion, when the dust collection electrode turns and interferes
with a fixed portion of an adjacent dust collection electrode, the movable portion
moves to a retraction position under an action of a force, and after the dust collection
electrode completes turning, the movable portion returns to a normal position under
an action of the offset member.
[0019] According to an embodiment, an air purification device is provided, which includes
the above-mentioned dust collection electrode assembly.
[0020] In an embodiment, the air purification device further includes a generation electrode
assembly, the dust collection electrode assembly is moveable relative to the generation
electrode assembly to change at least one of a position state and an orientation state
of the dust collection electrode relative to the generation electrode assembly.
[0021] According to an embodiment, a control method for the above-mentioned air purification
device is provided, which includes:
calculating a cumulative working duration of the air purification device;
[0022] controlling the drive device to drive the dust collection electrode to perform one
turning when the cumulative working duration is greater than or equal to a first predetermined
duration; or, sending a prompt message to a user to remind the user to clean the dust
collection electrode when the cumulative working duration is greater than or equal
to a second predetermined duration.
[0023] In an embodiment, the calculating the cumulative working duration of the air purification
device includes:
when the dust collection electrode in the air purification device is used for a first
time, calculating the cumulative working duration by taking time when the air purification
device is turned on for a first time as a starting point; and
when the dust collection electrode in the air purification device is cleaned, calculating
the cumulative working duration by taking time when the air purification device is
turned on for the first time after the dust collection electrode is cleaned as the
starting point.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Through the following description of the embodiments of the present invention with
reference to the accompanying drawings, the above and other purposes, features and
advantages of the present invention will become clearer. In the drawings:
FIG. 1 is a schematic structure diagram illustrating a dust collection electrode assembly
according to an embodiment of the present invention;
FIG. 2 is a schematic structure diagram illustrating a dust collection electrode in
a dust collection electrode assembly according to an embodiment of the present invention;
and
FIG. 3 is an exploded view of an air purification device according to an embodiment
of the present invention.
DETAILED DESCRIPTION
[0025] The present invention is described below based on the embodiments, but the present
invention is not limited to these embodiments. In order to avoid confusing the essence
of the present invention, well-known methods, procedures, processes, and elements
are not described in detail.
[0026] In addition, those of ordinary skill in the art should understand that the drawings
provided herein are for illustrative purpose, and the drawings are not necessarily
drawn to scale.
[0027] Unless the context clearly requires otherwise, the words "include", "comprise" and
the like in the entire specification and claims should be interpreted as inclusive
rather than exclusive or exhaustive, that is, "including but not limited to".
[0028] In the description of the present invention, it should be appreciated that, terms
"first", "second" and so on are used for descriptive purpose only, and cannot be understood
as indicating or implying a relative importance. In addition, in the description of
the present invention, unless otherwise stated, "a plurality of' means two or more.
[0029] A purpose of the present invention is to provide a dust collection electrode assembly
capable of effectively reducing the cleaning frequency, an air purification device
having the dust collection electrode assembly, and a control method thereof.
[0030] The dust collection electrode in the dust collection electrode assembly provided
by the present invention is moveable relative to a dust collection electrode support
structure, so that at least one of a position state and an orientation state of the
dust collection electrode relative to the generation electrode assembly can be changed.
By changing at least one of the position and orientation states of the dust collection
electrode relative to the generation electrode assembly, a main dust accumulation
area of the dust collection electrode can be changed. When there is more dust accumulated
in a certain area, the position or orientation state of the dust collection electrode
can be changed, so as to change to another area to accumulate the dust, thereby effectively
reducing the cleaning frequency, slowing down the attenuation of the particulate matter
CADR of the purification device, and optimizing the user experience.
[0031] The present invention provides a dust collection electrode assembly and an air purification
device having the dust collection electrode assembly, such as an electrostatic type
air purifier. As shown in FIG. 3, the air purification device provided by the present
invention includes a generation electrode assembly 1 and a dust collection electrode
assembly 2 opposite to each other. The generation electrode assembly 1 includes a
generation electrode 11; the dust collection electrode assembly 2 includes a dust
collection electrode 21 and a dust collection electrode support structure. The dust
collection electrode support structure is configured to support the dust collection
electrode 21. After the generation electrode 11 is powered on, a high potential difference
is formed between the generation electrode 11 and the dust collection electrode 21,
accordingly a corona discharge can be produced, so that the particulate matter passing
between the generation electrode 11 and the dust collection electrode 21 is charged,
and the charged particulate matter moves to the dust collection electrode 21 and is
accumulated on the dust collection electrode 21, thereby achieving the effect of air
purification.
[0032] A main dust accumulation area of the dust collection electrode 21 is a portion thereof
opposite to the generation electrode 11. To solve the problem existing in the related
art that the dust collection electrode 21 needs to be cleaned frequently to ensure
the purification effect of the purification device, as shown in FIG. 1 and FIG. 2,
the dust collection electrode 21 in the dust collection electrode assembly 2 provided
by the present invention is moveable relative to the dust collection electrode support
structure, so that at least one of the position and/or orientation state of the dust
collection electrode 21 relative to the generation electrode assembly 1 can be changed.
By changing at least one of the position and/or orientation state of the dust collection
electrode 21 relative to the generation electrode assembly 1, the main dust accumulation
area of the dust collection electrode 21 can be changed. When there is more dust accumulated
in a certain area, the position or orientation state of the dust collection electrode
21 can be changed, so as to change to another area to accumulate the dust, thereby
effectively reducing the cleaning frequency, slowing down the attenuation of the particulate
matter CADR of the purification device, and optimizing the user experience. The CADR
is short for Clean Air Delivery Rate.
[0033] The mode of motion of the dust collection electrode 21 relative to the dust collection
electrode support structure may be, for example, translating and/or turning relative
to the dust collection electrode support structure, such as turning relative to the
dust collection electrode support structure. In such a way, the compactness of the
overall structure of the air purification device is not affected, and the main dust
accumulation area of the dust collection electrode 21 can be easily changed.
[0034] Further, as shown in FIG. 2, the dust collection electrode 21 includes an electrode
plate body 211 and a plurality of dust collection structures 212 provided on the electrode
plate body 211. The dust collection structures 212 can increase the dust collection
area of the dust collection electrode 21, which allows the dust collection electrode
21 to receive more accumulated dust. When the dust collection electrode 21 is in different
position and/or orientation states relative to the generation electrode assembly 1,
the generation electrode assembly 1 is arranged opposite to different dust collection
structures 212. That is, each time the position and/or orientation state of one dust
collection electrode 21 is changed, one dust collection structure 212 opposite to
the generation electrode assembly 1 is replaced. Thus, each time the position or orientation
state of the dust collection electrode 21 is changed, one new dust collection structure
212 is arranged opposite to the generation electrode assembly 1 to accumulate dust,
thereby further increasing a duration of a single use of the dust collection electrode
assembly 2.
[0035] The dust collection structure 212 may be any structure capable of increasing the
dust collection area of the dust collection electrode 21. In some embodiments, the
dust collection structure 212 includes a protrusion disposed on a side edge of the
electrode plate body 211. Preferably, the protrusion extends in a direction same as
the extension direction of the side edge. Further, a cross section of the protrusion
can be a part of a circle, which can further increase the dust collection area of
the dust collection electrode 21. The part of the circle is obtained by cutting of
a portion of the full circle, such as cutting a small portion of the full circle.
[0036] The electrode plate body 211 includes a first side edge 2111 and a second side edge
2112 opposite to each other, and further includes a third side edge 2113 and a fourth
side edge 2114 respectively connected to both ends of the first side edge 2111 and
the both ends of the second side edge 2112. In some embodiments, a plurality of dust
collection structures 212 are respectively disposed on the first side edge 2111 and
the second side edge 2112. For example, in the embodiment shown in FIG. 2, a first
protrusion 2121 is provided on the first side edge 2111 of the electrode plate body
211, and a second protrusion 2122 is provided on the second side edge 2112 of the
electrode plate body 211. In such a way, through the turning of the dust collection
electrode 21, the dust collection structure 212 on the first side edge 2111 or the
dust collection structure 212 on the second side edge 2112 can be arranged opposite
to the generation electrode assembly 1.
[0037] Specifically, as shown in FIG. 1, the dust collection electrode support structure
includes a frame structure 22, and the dust collection electrode 21 can be provided
in the frame structure 22 and be turnable around an axis parallel to the first side
edge 2111, so that the dust collection electrode 21 can turn between a first position
and a second position. In the first position, the first protrusion 2121 on the first
side edge 2111 is opposite to the generation electrode assembly 1, and in this case,
the first protrusion 2121 serves as the main dust collection structure 212 to collect
the dust. In the second position, the second protrusion 2122 on the second side edge
2112 is opposite to the generation electrode assembly 1, and in this case, the second
protrusion 2122 serves as the main dust collection structure 212 to collect the dust.
[0038] A rotating shaft is respectively provided on the third side edge 2113 and the fourth
side 2114 of the dust collection electrode 21, and accordingly, the frame structure
22 is provided with rotating shaft holes (not shown in the figure) matching the rotating
shaft. The rotating shaft is arranged rotatably in the rotating shaft holes to implement
the turning of the dust collection electrode 21. Alternatively, rotating shaft holes
are provided on the third side edge 2113 and the fourth side 2114 of the dust collection
electrode 21, and accordingly, the frame structure 22 is provided with a rotating
shaft (not shown in the figure) matching the rotating shaft holes. The rotating shaft
is arranged rotatably in the rotating shaft holes to implement the turning of the
dust collection electrode 21.
[0039] In some embodiments, there are a plurality of dust collection electrodes 21 arranged
side by side. In order to implement that all dust collection electrodes 21 can turn
at the same time, the dust collection electrodes 21 need to be spaced apart to avoid
interference between the dust collection electrodes 21 during the turning. In order
to minimize a space between the dust collection electrodes 21, the compactness of
the structure is improved, for example, the rotating shaft or the rotating shaft holes
is/are arranged at a midpoint of the third side edge 2113 and a midpoint of the fourth
side edge 2114.
[0040] In some other embodiments, the dust collection electrode 21 has a structure retractable
in a direction parallel to the third side edge 2113. The dust collection electrode
21 is retracted when turning to avoid interference between the dust collection electrodes
21; after the turning is finished, the dust collection electrode 21 is stretched into
an original shape and size. The dust collection electrode 21 can be retracted electrically;
alternatively, the dust collection electrode 21 may include a fixed portion and a
movable portion which is movable relative to the fixed portion, and the movable portion
is in a normal position under an action of an offset member such as a spring, to maintain
the original shape and size of the dust collection electrode 21; when the dust collection
electrode 21 turns and interferes with a fixed portion of an adjacent dust collection
electrode 21, the movable portion moves to a retraction position under an action of
a force, and after the dust collection electrode 21 completes the turning, the movable
portion returns to the normal position under the action of the offset member. By providing
the dust collection electrodes 21 having a retractable structure, the space between
the dust collection electrodes 21 can also be reduced.
[0041] In order to implement an automatic change of the position of the dust collection
electrode 21, in some embodiments, the dust collection electrode assembly 2 further
includes a drive device (not shown) configured to drive the dust collection electrode
21 to turn between the first position and the second position. The drive device may
be, for example, a device capable of driving the dust collection electrode 21 to turn,
such as a motor or a rotating cylinder, etc. For example, the drive device may be
provided at one end of the dust collection electrode 21 and mounted on the frame structure
22.
[0042] Further, in order to simplify the structure, the dust collection electrode assembly
2 further includes a transmission mechanism (not shown in the figures). The drive
device drives a plurality of dust collection electrodes 21 to synchronously turn through
the transmission mechanism. The transmission mechanism may be any transmission mechanism
capable of rotating, such as a gear transmission mechanism, a double crank mechanism,
and the like.
[0043] The turning of the dust collection electrode 21 can be automatically controlled by
the air purification device. For example, a cumulative working duration of the air
purification device is calculated. The calculation method is that, if the dust collection
electrode 21 in the air purification device is used for the first time, the cumulative
working duration is calculated by taking time when the air purification device is
turned on for the first time as a starting point; and if the dust collection electrode
21 in the air purification device is cleaned, the cumulative working duration is calculated
by taking time when the air purification device is turned on for the first time after
the dust collection electrode is cleaned as a starting point. When the cumulative
working duration is greater than or equal to a first predetermined duration, the drive
device is controlled to drive the dust collection electrode 21 to perform one turning.
When the cumulative working duration is greater than or equal to a second predetermined
duration, a prompt message is sent to the user to remind the user to clean the dust
collection electrode 21. When the user cleans the dust collection electrode 21 and
puts it back into the air purification device, the cumulative working duration is
reset to zero. Here, the zero reset may be automatic, that is, when the air purification
device detects that the dust collection electrode 21 is taken out and then reinstalled,
it is determined that the dust collection electrode 21 has been cleaned, and the cumulative
working duration is automatically reset to zero, or, the user can manually reset to
zero. The first predetermined duration and the second predetermined duration can be
set according to specific conditions. The first predetermined duration is, for example,
a cleaning cycle of a conventional air purification device, and the second predetermined
duration is less than or equal to twice the first predetermined time.
[0044] In other embodiments, a button portion (not shown in the figures) is provided on
the air purification device, and the user can press the button portion to control
the turning of the dust collection electrode 21 autonomously, for example, when the
button portion is triggered, the drive device drives the dust collection electrode
21 to perform one turning. The button portion may be a mechanical button or a virtual
button provided on a touch screen.
[0045] In an alternative embodiment, the dust collection electrode assembly as a whole is
configured to be able to move relative to the generation electrode assembly, thereby
changing at least one of the position and orientation states of the dust collection
electrode of the dust collection electrode assembly relative to the generation electrode
assembly. For example, the dust collection electrode assembly is configured to be
able to turn integrally or be able to move integrally relative to the generation electrode
assembly, and the configuration mode is similar to that of the foregoing dust collection
electrode, which will not be repeated here again.
[0046] Further, as shown in FIG. 3, the air purification device provided by the present
invention further includes a primary effect filter screen 3 and an ozone reduction
net 4. In a flow direction of the airflow, the primary effect filter screen 3, the
generation electrode assembly 1, and the dust collection electrode assembly 2 and
the ozone reduction net 4 are arranged in sequence. The air is preliminarily filtered
through the primary effect filter screen 3 to extend the duration of a single use
of the dust collection electrode assembly 2. The ozone produced by the air purification
device during the air purification is decomposed by the ozone reduction net 4.
[0047] It is easy for those skilled in the art that to understand that the above preferred
solutions can be freely combined or superimposed as long as they do not conflict with
each other.
[0048] It should be understood that the above embodiments are merely exemplary rather than
restrictive. Those skilled in the art can make various apparent or equivalent modifications
or substitutions to the above details without departing from the basic principles
of the present invention, and these will all included in the scope of the claims of
the present invention.
1. A dust collection electrode assembly, applied in an air purification device, the air
purification device comprising a generation electrode assembly, wherein the dust collection
electrode assembly comprises a dust collection electrode, the dust collection electrode
is moveable to change at least one of a position state and an orientation state of
the dust collection electrode relative to the generation electrode assembly.
2. The dust collection electrode assembly according to claim 1, further comprising a
dust collection electrode support structure, wherein the dust collection electrode
is moveable relative to the dust collection electrode support structure.
3. The dust collection electrode assembly according to claim 1 or 2, wherein the dust
collection electrode comprises an electrode plate body and a plurality of dust collection
structures provided on the electrode plate body, when the dust collection electrode
is in different position states and/or orientation states relative to the generation
electrode assembly, the generation electrode assembly is arranged opposite to different
dust collection structures.
4. The dust collection electrode assembly according to claim 3, wherein the plurality
of dust collection structures are respectively provided on a first side edge and a
second side edge of the electrode plate body, the first side edge is opposite to the
second side edge.
5. The dust collection electrode assembly according to claim 3, wherein a dust collection
structure comprises a protrusion provided on a side edge of the electrode plate body.
6. The dust collection electrode assembly according to claim 5, wherein the protrusion
extends in a direction same as an extension direction of the side edge, and a cross
section of the protrusion is a portion of a circle.
7. The dust collection electrode assembly according to claim 4, further comprising a
dust collection electrode support structure, wherein the dust collection electrode
is capable of moving relative to the dust collection electrode support structure,
the dust collection electrode support structure comprises a frame structure, the dust
collection electrode is provided in the frame structure and is turnable around an
axis parallel to the first side edge, such that the dust collection electrode is turnable
between a first position and a second position; in the first position, a dust collection
structure on the first side edge is opposite to the generation electrode assembly;
and in the second position, a dust collection structure on the second side edge is
opposite to the generation electrode assembly.
8. The dust collection electrode assembly according to claim 7, wherein the electrode
plate body further comprises a third side edge and a fourth side edge connected to
the first side edge and the second side edge, a rotating shaft is provided on the
third side edge and the fourth side edge, the frame structure is provided with rotating
shaft holes matching the rotating shaft; or rotating shaft holes are provided on the
third side edge and the fourth side edge, the frame structure is provided with a rotating
shaft matching the rotating shaft holes.
9. The dust collection electrode assembly according to claim 7, further comprising a
drive device configured to drive the dust collection electrode to turn between the
first position and the second position.
10. The dust collection electrode assembly according to claim 9, further comprising a
plurality of dust collection electrodes arranged side by side, wherein the dust collection
electrode assembly further comprises a transmission mechanism, and the drive device
drives the plurality of dust collection electrodes to turn synchronously through the
transmission mechanism.
11. The dust collection electrode assembly according to claim 10, wherein the transmission
mechanism comprises a gear transmission mechanism or a double crank mechanism.
12. The dust collection electrode assembly according to claim 8, wherein the dust collection
electrode has a retractable structure which is retractable in a direction parallel
to the third side edge, the retractable structure is configured to retract when turning
and stretch to an original shape and size after the turning is completed.
13. The dust collection electrode assembly according to claim 12, wherein,
the dust collection electrode is retracted electrically; or
the dust collection electrode assembly further comprises an offset member, the dust
collection electrode comprises a fixed portion and a movable portion which is movable
relative to the fixed portion, when the dust collection electrode turns and interferes
with a fixed portion of an adjacent dust collection electrode, the movable portion
moves to a retraction position under an action of a force, and after the dust collection
electrode completes turning, the movable portion returns to a normal position under
an action of the offset member.
14. An air purification device, comprising the dust collection electrode assembly according
to any one of claims 1 to 13.
15. A control method for an air purification device according to claim 14, wherein the
dust collection electrode assembly further comprises a drive device configured to
drive the dust collection electrode to turn between a first position and a second
position, the control method comprises:
calculating a cumulative working duration of the air purification device;
controlling the drive device to drive the dust collection electrode to perform one
turning when the cumulative working duration is greater than or equal to a first predetermined
duration; or, sending a prompt message to a user to remind the user to clean the dust
collection electrode when the cumulative working duration is greater than or equal
to a second predetermined duration.
16. The control method for the air purification device according to claim 15, wherein
the calculating the cumulative working duration of the air purification device comprises:
when the dust collection electrode in the air purification device is used for a first
time, calculating the cumulative working duration by taking time when the air purification
device is turned on for a first time as a starting point; and
when the dust collection electrode in the air purification device is cleaned, calculating
the cumulative working duration by taking time when the air purification device is
turned on for the first time after the dust collection electrode is cleaned as the
starting point.