CN205842887U - Electric appliance box heat radiation structure of air conditioner outdoor unit and air conditioner outdoor unit - Google Patents
Electric appliance box heat radiation structure of air conditioner outdoor unit and air conditioner outdoor unit Download PDFInfo
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- CN205842887U CN205842887U CN201620793615.9U CN201620793615U CN205842887U CN 205842887 U CN205842887 U CN 205842887U CN 201620793615 U CN201620793615 U CN 201620793615U CN 205842887 U CN205842887 U CN 205842887U
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- appliance kit
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- outdoor unit
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Abstract
The utility model discloses an air condensing units's electrical apparatus box heat radiation structure and air condensing units. The heat dissipation structure of the electrical box of the outdoor unit comprises an air duct structure, wherein the air duct structure is provided with a first port and a second port, the first port is located in a negative pressure area inside the outdoor unit of the air conditioner during operation, and the second port is communicated with the inner space of the electrical box. The utility model provides an air condensing units's electrical apparatus box heat radiation structure is provided with the wind channel structure, and its inside negative pressure region when the first mouth of wind channel structure was located air condensing units operation, the inner space intercommunication of second mouth and electrical apparatus box, hot-air in the electrical apparatus box can be under the negative pressure effect through wind channel structure discharge air condensing units, change the radiating mode of components and parts in the electrical apparatus box into by natural convection and force the heat transfer, improved the radiating effect of electrical apparatus box.
Description
Technical field
This utility model relates to air-conditioning technical field, relates more specifically to the electrical appliance kit radiator structure of a kind of air-conditioner outdoor unit
And air-conditioner outdoor unit.
Background technology
Present electronic devices and components are gradually raising due to caloric value, and the temperature rise of components and parts becomes the one of controller reliability
Individual distinct issues, particularly in the case of improper ventilation, heat dissipation environment difference, if components and parts heat can not distribute in time
Go out, may result in heat and constantly accumulate, cause components and parts temperature constantly to rise.
The heat radiation of components and parts mainly has conduction of heat, convection current and three kinds of modes of radiation, and wherein the above two occupy main component, heat
Conduction occurs at device itself, will be distributed by the heat of self, must depend on convection current.Sending out of air-conditioner outdoor unit
Miniaturization is increasingly partial in exhibition, and owing to the overall volume of air-conditioner outdoor unit diminishes, the area of PCB main board diminishes the most accordingly, single
Plane amasss device heating amount and increases, and heat-dissipating space is due to the restriction of structure, also becomes the compactest, result in integral heat sink feelings
Condition becomes the most severe, and the temperature rise of components and parts becomes outstanding problem.
Current air-conditioner outdoor unit, electrical appliance kit is arranged on the boundary of compressor chamber and blower fan chamber, and electrical appliance kit top is arranged
There is seal cover board, prevent the dust in blower fan chamber, moisture, rainwater etc. from entering in electrical appliance kit, affect the performance of electrical appliance kit.
Above-mentioned air-conditioner outdoor unit, owing to electrical appliance kit parts are fully located in compressor chamber, available compressor chamber is dispelled the heat
Hole diminishes, and the integral sealing of electrical equipment and parts is good, causes heat dissipation environment to be deteriorated, main heating element on whole pcb board
Temperature rise be all higher than before, the reliability of electronic devices and components on pcb board can be badly influenced.
Utility model content
In view of this, this utility model provides electrical appliance kit radiator structure and the air-conditioner outdoor unit of a kind of air-conditioner outdoor unit, with
Improve the radiating effect of air-conditioner outdoor unit.
First aspect, it is provided that the electrical appliance kit radiator structure of a kind of air-conditioner outdoor unit, including air channel structure, described air channel structure
Being provided with first and second mouthful, described first is positioned at its internal negative pressure region when described air-conditioner outdoor unit runs, described
Second mouthful connects with the inner space of described electrical appliance kit.
Preferably, described air channel structure is at least partially disposed at the inner side of described electrical appliance kit or is wholy set in described electricity
The outside of device box.
Preferably, described air-conditioner outdoor unit includes being arranged at the kuppe at its exhaust outlet, the first of described air channel structure
Mouth is positioned at the radial outside of described kuppe.
Preferably, described air-conditioner outdoor unit being provided with air inlet, described air inlet is by the inner space of described electrical appliance kit
It is in communication with the outside.
Preferably, described air channel structure is tubular structure, on described second mouthful of sidewall being arranged at described air channel structure.
Preferably, the axis horizontal of described tubular structure, or, the axis of described tubular structure is along towards described first
Direction gradually rise.
Preferably, second mouthful of described air channel structure is positioned at the top of described electrical appliance kit.
Preferably, the open at one end of described air channel structure forms described first, the second end seal of described air channel structure
Close.
Preferably, described air-conditioner outdoor unit includes heat exchanger, between blind end and the described heat exchanger of described air channel structure
There is a preset distance.
Preferably, described air-conditioner outdoor unit also includes that median septum, described air channel structure are arranged at the first of septum plate
Side, described electrical appliance kit is arranged on septum plate second side contrary with its first side.
Preferably, described air channel structure is arranged with septum plate split, and described air channel structure is through connector or company
Access node structure is fixed with septum plate；
Or, described air channel structure is integrally formed on septum plate；
Or, described air channel structure is collectively forming with septum plate by structural member.
Preferably, the first of described air channel structure is towards the front panel of described off-premises station.
Second aspect, a kind of air-conditioner outdoor unit, including electrical appliance kit radiator structure as above.
The electrical appliance kit radiator structure of air-conditioner outdoor unit that this utility model provides is provided with air channel structure, the of air channel structure
Being positioned at its internal negative pressure region when air-conditioner outdoor unit runs flatly, second mouthful connects with the inner space of electrical appliance kit, electrical appliance kit
In hot-air can under suction function through air channel structure discharge air-conditioner outdoor unit, by the radiating mode of components and parts in electrical appliance kit by
Free convection changes into forcing heat exchange, improves the radiating effect of electrical appliance kit.
The air-conditioner outdoor unit that this utility model provides is owing to have employed above-mentioned electrical appliance kit radiator structure, good heat dissipation effect.
Accompanying drawing explanation
By description to this utility model embodiment referring to the drawings, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from, in the accompanying drawings:
Fig. 1 illustrates one of schematic diagram of electrical appliance kit radiator structure that this utility model detailed description of the invention provides；
Fig. 2 illustrates the partial enlarged drawing of part A in Fig. 1；
Fig. 3 illustrates the two of the schematic diagram of the electrical appliance kit radiator structure that this utility model detailed description of the invention provides；
Fig. 4 illustrates the partial enlarged drawing of part B in Fig. 3；
Fig. 5 illustrates the three of the schematic diagram of the electrical appliance kit radiator structure that this utility model detailed description of the invention provides；
Fig. 6 illustrates the top view of the electrical appliance kit radiator structure that this utility model detailed description of the invention provides；
Fig. 7 illustrates the front view after the air-conditioner outdoor unit removing front panel that this utility model detailed description of the invention provides.
In figure, 1, air channel structure；11, first；12, second mouthful；13, catch；2, median septum；21, the first kink；3、
Electrical appliance kit；31, the first side wall；4, housing；41, front panel；5, heat exchanger；6, blower fan；7, bending member；71, the second kink；
72, the 3rd kink；73, the 4th kink；8, kuppe.
Detailed description of the invention
Below based on embodiment, this utility model is described, but this utility model is not restricted to these to be implemented
Example.In below details of the present utility model being described, detailed describe some specific detail sections.To people in the art
The description not having these detail sections for Yuan can also understand this utility model completely.Of the present utility model in order to avoid obscuring
Essence, the narration the most in detail of known method, process, flow process, element.
Additionally, it should be understood by one skilled in the art that accompanying drawing is provided to descriptive purpose provided herein, and
Accompanying drawing is not necessarily drawn to scale.
Unless the context clearly requires otherwise, otherwise entire disclosure is similar with " including ", " comprising " in claims etc.
Word should be construed to the implication that comprises rather than exclusive or exhaustive implication；It is to say, be containing of " including but not limited to "
Justice.
In describing the invention, it is to be understood that term " first ", " second " etc. are not only used for describing purpose, and not
It is understood that as instruction or hint relative importance.Additionally, in describing the invention, except as otherwise noted, the implication of " multiple "
It is two or more.
" level " specifically described herein, " on ", the orientation of the instruction such as D score or position relationship be based on side shown in the drawings
Position or position relationship, be only for ease of describing the present invention and simplifying description rather than instruction or infer device or the element of indication
Must have specific orientation, for specific azimuth configuration and operation, thus it is not intended that the present invention to be protected the limit of content
System.
This utility model provides the electrical appliance kit radiator structure of a kind of air-conditioner outdoor unit, including air channel structure, air channel structure
Being provided with first and second mouthful, first is positioned at its internal negative pressure region, second mouthful and electrical equipment when air-conditioner outdoor unit runs
The inner space connection of box.
The electrical appliance kit radiator structure that this utility model provides is provided with air channel structure, and the first of air channel structure is positioned at air-conditioning
The negative pressure region that when off-premises station runs, it is internal, second mouthful connects with the inner space of electrical appliance kit, and the hot-air in electrical appliance kit can
Under suction function, discharge air-conditioner outdoor unit through air channel structure, improve the radiating effect of electrical appliance kit.
This utility model additionally provides a kind of air-conditioner outdoor unit, owing to have employed above-mentioned electrical appliance kit radiator structure, and heat radiation effect
The best.
Referring to Fig. 1 to Fig. 7, electrical appliance kit radiator structure of the present utility model and the embodiment of off-premises station are described.
The electrical appliance kit radiator structure that this utility model provides includes that air channel structure 1, air channel structure 1 are provided with first 11 He
Second mouthful 12, first 11 is positioned at negative pressure region when air-conditioner outdoor unit runs, and second mouthful 12 connects with the inner space of electrical appliance kit 3
Logical, thus, pressure reduction produces air flow field and carries out heat exchange with the components and parts in electrical appliance kit 3, takes away the heat that components and parts produce, and heat is empty
Gas enters air channel structure 1 through second mouthful 12, and is discharged by the first 11 of air channel structure 1, by components and parts radiating mode by nature
Convection current (heat transfer coefficient 5～25W/ (m2* K)) change into forcing heat exchange (heat transfer coefficient 10～100W/ (m2* K)), it is greatly enhanced heat radiation
Effect, reduce components and parts working environment temperature, by experiment and simulating, verifying, locally rugged surrounding temperature can reduce by 10 DEG C with
On, according to the principle of " ambient temperature reduce by 1 DEG C, component failure can reduce by 60% ", component thermal crash rate can reduce by 90% with
On.It addition, the setting of air channel structure 1 can effectively prevent the hot-air after heat exchanger heat exchange, (after heat exchange, temperature is higher by 20 than heat exchange
DEG C) enter in electrical appliance kit 3 cause electrical appliance kit 3 in temperature raise.
Wherein, the quantity of second mouthful 12 does not limits, and can be one, it is also possible to for multiple.It is further preferred that second mouthful 12
It is positioned at the top of electrical appliance kit 3, it is possible to avoid producing hot-air and discharge dead angle so that the hot-air in electrical appliance kit 3 all can be through second
Mouth 12 is discharged.
Air channel structure 1 does not limits with the relative position of electrical appliance kit 3, can be at least partially disposed on the inner side of electrical appliance kit 3, or
Person is wholy set in the outside of electrical appliance kit 3, as long as can be discharged by the hot-air in electrical appliance kit 3.Owing to electrical appliance kit 3 is permissible
Be enclosed construction can also be semi-open structure, inner side the most described herein refers to arrange the side of circuit board, pipeline, this
Outside described in place refers to the side contrary with inner side.In a preferred embodiment, air channel structure 1 is arranged on outside electrical appliance kit 3
Side.
The concrete structure of air channel structure 1 does not limits, it is possible to form the distribution channel of hot-air, such as, at one preferably
In embodiment, air channel structure 1 is in tubular, and its cross sectional shape does not limits, such as, can be circle, triangle, square etc..
In a further embodiment, as in figure 2 it is shown, the open at one end formation first 11 of air channel structure 1, second mouthful
On 12 sidewalls being arranged at air channel structure 1, electrical appliance kit 3 is formed near the side of air channel structure 1 and connects with second mouthful 12
Vent passages, simple in construction, it is easy to accomplish.
In a further embodiment, air-conditioner outdoor unit also includes housing 4, heat exchanger 5, air-supply arrangement and is arranged at shell
Median septum 2 in body 4.Median septum 2 will be divided into two chambers, the respectively first chamber and the second chamber in housing 4.Off-premises station
Air-supply arrangement be arranged in the first chamber, preferably blower fan 6.First side of median septum 2 arranges air channel structure 1, air channel structure 1
It is positioned at the first chamber.On the second side contrary with its first side on median septum 2, electrical appliance kit 3 is set.Second mouthful of air channel structure 1
12 connect through the inner space of connecting path with electrical appliance kit 3.
In one embodiment, air channel structure 1 is arranged for split with median septum 2, and air channel structure 1 is in fixture is fixed on
On dividing plate 2.In another embodiment, air channel structure 1 is integrally formed on median septum 2.In yet another embodiment, one is arranged
Structural member, is collectively forming air channel structure 1 by structural member and median septum 2.Air channel structure 1 arranges position not on median septum 2
Limit, can be arranged on the positions such as the top of median septum 2, middle part, bottom, be preferably located on the top of median septum 2.
In a preferred embodiment, as shown in figs. 2 and 4, the top of median septum 2 forms first to its first lateral buckling
Kink 21, structural member is the bending member 7 that cross section is generally c-shaped, and bending member 7 includes the second kink the 71, the 3rd kink 72
And connecting the second kink 71 and the 4th kink 73 of the 3rd kink 72, the second kink 71 rides over the first kink 21
On, the 4th kink 73 is connected with the sidewall of median septum 2 first side, thus, the first kink the 21, the 3rd kink the 72, the 4th
The sidewall of kink 73 and median septum 2 first side surrounds the air channel structure 1 of the tubular that is square jointly, and it is internally formed for air
The passage of circulation.Wherein, the second kink 71 and the first kink 21 are fixed, and fixed form does not limits, and can pass through securing member, buckle
It is fixed together etc. structure.
In a further embodiment, as in figure 2 it is shown, the top of median septum 2 offers multiple groove, the first kink 21
The upper position corresponding with multiple grooves offers multiple through hole respectively, and through hole connects with groove and is collectively forming second mouthful 12, second mouthful
12 is elongated.On electrical appliance kit 3, the first side wall 31 near median septum 2 is arranged less than median septum 2, and second mouthful 12 is positioned at electrical appliance kit
The top of 3, the headroom of electrical appliance kit 3 the first side wall 31 forms vent passages, and the hot-air in electrical appliance kit 3 can be through the first side wall
The end face of 31 enters second mouthful 12, and then is discharged air-conditioner outdoor unit by air channel structure 1, it is possible to avoids producing hot-air and discharges dead
Angle so that the hot-air in electrical appliance kit 3 all can be discharged through second mouthful 12.Certainly, it is possible to open on the first side wall 31 of electrical appliance kit 3
Hole forms vent passages.
In a further embodiment, between electrical appliance kit 3 and second mouthful 12 of air channel structure 1, it is provided with flow-guiding structure, logical
Cross flow-guiding structure hot-air is guided, thus improve radiating effect further.The concrete form of flow-guiding structure does not limits, example
As, flow-guiding structure includes protruding the channel structure arranged on the first side wall 31 to the direction of median septum 2, and channel structure stretches into second
Mouth 12, hot-air enters in air channel structure 1 through second mouthful 12 after channel structure guides.The set-up mode of above-mentioned second mouthful 12
For the air channel structure 1 shown in figure, if air channel structure and median septum 2 are arranged for split, then need air channel structure with
It is respectively provided with through hole on median septum 2, is collectively forming connecting path.
It is, of course, understood that when being not provided with median septum 2, air channel structure 1 can be directly arranged at the side of electrical appliance kit 3
On wall.
In a further embodiment, air-conditioner outdoor unit being provided with air inlet, air inlet is by the inner space of electrical appliance kit 3
It is in communication with the outside so that outside air i.e. enters in electrical appliance kit 3 without heat exchanger 5 heat exchange, thus it is internal more to take away electrical appliance kit 3
Heat.The position that arranges of air inlet does not limits, it is possible to realize electrical appliance kit 3 inner space and extraneous connection, it is preferred that enter
Air port is arranged on the position on air-conditioner outdoor unit housing with second mouthful of 12 diagonal angle, adds air flow path footpath, carries further
High radiating effect.
Further, unit is under bad working environments, and electric current increases, and the heat that the components and parts in electrical appliance kit 3 produce increases, wind
Machine 6 wind speed remains high-grade automatically, faster takes away heat, thus maintains ring temperature stable.
In a preferred embodiment, as it is shown in figure 5, the open at one end of air channel structure 1 forms first 11, air channel structure
Second end seal of 1 is closed, it is further preferred that the second end at air channel structure 1 arranges catch 13, by catch 13 by air channel structure
Second end seal of 1 is closed, and comparatively speaking, the blind end of air channel structure 1 is arranged near heat exchanger 5, opening i.e. first 11 end
Arrange away from heat exchanger 5, prevent the hot-air after heat exchanger of air conditioner outdoor unit 5 heat exchange from entering in air channel structure 1, and then avoid
Part hot-air enters in electrical appliance kit 3, is further ensured that the radiating effect of electrical appliance kit 3.
It is further preferred that first 11 is towards the direction of off-premises station front panel 41 so that the air-out direction of air channel structure 1
Roughly the same with the flow direction of the hot-air after heat exchanger 5 heat exchange, avoid the hot-air after heat exchanger 5 heat exchange further
In air channel structure 1 enters electrical appliance kit 3.It is further preferred that blind end distance heat exchanger 5 one preset distance of air channel structure 1,
Make to separate between air channel structure 1 and heat exchanger 5, it is to avoid the conduction of heat between heat exchanger 5 and air channel structure 1, this pre-spacing
From preferred scope be 300 to 400mm.
In a preferred embodiment, the axis horizontal of air channel structure 1, or, along the direction towards first 11, air channel is tied
The axis of structure 1 is gradually inclined upwardly.Owing to the density of hot-air is bigger than the density of cold air, under existing lower air-out mode,
Hot-air needs to offset gravity factor could discharge off-premises station, and heat transfer effect is poor, and air channel structure 1 is set to level or to the
The direction of 11 is slightly inclined upwards flatly, is more beneficial for the discharge of hot-air, improves heat exchange efficiency.
In a preferred embodiment, the front panel 41 of air-conditioner outdoor unit is provided with exhaust outlet, is provided with at exhaust outlet and leads
Stream cover 8, good guide functions is played in the air-out to off-premises station.As shown in Figure 6 and Figure 7, the first 11 of air channel structure 1 is arranged
In the radial outside of kuppe 8, when blower fan 6 water dumping, due to the barrier effect of kuppe 8, it is possible to avoid water through air channel structure 1
Enter in electrical appliance kit 3, improve electrical safety, extend the service life of components and parts.It is understood that radial outside herein refers to
Be the exterior lateral area that kuppe 8 outer peripheral face is corresponding, the i.e. first 11 front end face place plane and the rear end face that are positioned at kuppe 8
Between the plane of place.It is further preferred that the first 11 of air channel structure 1 is positioned at the top of kuppe 8.
This utility model additionally provides a kind of air-conditioner outdoor unit, including electrical appliance kit radiator structure as above, heat radiation effect
The best, improve the operation stability of system.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various change and change.All made within spirit and principles of the present invention any amendment, equivalent
Replacement, improvement etc., should be included within the scope of the present invention.
Claims (13)
1. the electrical appliance kit radiator structure of an air-conditioner outdoor unit, it is characterised in that include air channel structure (1), described air channel structure
(1) be provided with first (11) and second mouthful (12), described first (11) be positioned at described air-conditioner outdoor unit run time its inside
Negative pressure region, described second mouthful (12) connect with the inner space of described electrical appliance kit (3).
Electrical appliance kit radiator structure the most according to claim 1, it is characterised in that described air channel structure (1) is at least in part
It is arranged at the inner side of described electrical appliance kit (3) or is wholy set in the outside of described electrical appliance kit (3).
Electrical appliance kit radiator structure the most according to claim 1, it is characterised in that described air-conditioner outdoor unit includes being arranged at it
Kuppe (8) at exhaust outlet, the first (11) of described air channel structure (1) is positioned at the radial outside of described kuppe (8).
Electrical appliance kit radiator structure the most according to claim 1, it is characterised in that be provided with air intake on described air-conditioner outdoor unit
Mouthful, the inner space of described electrical appliance kit (3) is in communication with the outside by described air inlet.
Electrical appliance kit radiator structure the most according to claim 1, it is characterised in that described air channel structure (1) in tubular structure,
Described second mouthful (12) are arranged on the sidewall of described air channel structure (1).
Electrical appliance kit radiator structure the most according to claim 5, it is characterised in that the axis horizontal of described tubular structure, or
Person, the axis of described tubular structure gradually rises along the direction towards described first (11).
Electrical appliance kit radiator structure the most according to claim 1, it is characterised in that second mouthful of described air channel structure (1)
(12) top of described electrical appliance kit (3) it is positioned at.
Electrical appliance kit radiator structure the most according to claim 1, it is characterised in that the first end of described air channel structure (1) opens
Open form becomes described first (11), the second end seal of described air channel structure (1) to close.
Electrical appliance kit radiator structure the most according to claim 8, it is characterised in that described air-conditioner outdoor unit includes heat exchanger
(5), between blind end and the described heat exchanger (5) of described air channel structure (1), there is a preset distance.
10. according to the electrical appliance kit radiator structure described in any one of claim 1,3 to 9, it is characterised in that described air-conditioner outdoor unit
Also including that median septum (2), described air channel structure (1) are arranged at the first side of septum plate (2), described electrical appliance kit (3) is arranged
In upper second side contrary with its first side of septum plate (2).
11. electrical appliance kit radiator structures according to claim 10, it is characterised in that described air channel structure (1) with described in
Dividing plate (2) split is arranged, and described air channel structure (1) is fixed with septum plate (2) through connector or attachment structure；
Or, described air channel structure (1) is integrally formed on septum plate (2)；
Or, described air channel structure (1) is collectively forming with septum plate (2) by structural member.
12. according to the electrical appliance kit radiator structure described in any one of claim 1 to 9, it is characterised in that described air channel structure (1)
First (11) towards the front panel (41) of described off-premises station.
13. 1 kinds of air-conditioner outdoor units, it is characterised in that include the electrical appliance kit heat radiation knot as described in any one of claim 1 to 12
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793615.9U CN205842887U (en) | 2016-07-26 | 2016-07-26 | Electric appliance box heat radiation structure of air conditioner outdoor unit and air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793615.9U CN205842887U (en) | 2016-07-26 | 2016-07-26 | Electric appliance box heat radiation structure of air conditioner outdoor unit and air conditioner outdoor unit |
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| Publication Number | Publication Date |
|---|---|
| CN205842887U true CN205842887U (en) | 2016-12-28 |
Family
ID=57641144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620793615.9U Active CN205842887U (en) | 2016-07-26 | 2016-07-26 | Electric appliance box heat radiation structure of air conditioner outdoor unit and air conditioner outdoor unit |
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| CN (1) | CN205842887U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111343840A (en) * | 2020-03-17 | 2020-06-26 | 珠海格力电器股份有限公司 | Air supply equipment and air conditioning units |
| WO2023029124A1 (en) * | 2021-08-31 | 2023-03-09 | 广东美的制冷设备有限公司 | Electric control box of air conditioner and air conditioner |
-
2016
- 2016-07-26 CN CN201620793615.9U patent/CN205842887U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111343840A (en) * | 2020-03-17 | 2020-06-26 | 珠海格力电器股份有限公司 | Air supply equipment and air conditioning units |
| CN111343840B (en) * | 2020-03-17 | 2025-07-18 | 珠海格力电器股份有限公司 | Air supply equipment and air conditioning unit |
| WO2023029124A1 (en) * | 2021-08-31 | 2023-03-09 | 广东美的制冷设备有限公司 | Electric control box of air conditioner and air conditioner |
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