CN115978717B - Defrosting method and air conditioner - Google Patents
Defrosting method and air conditioner Download PDFInfo
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- CN115978717B CN115978717B CN202211492355.8A CN202211492355A CN115978717B CN 115978717 B CN115978717 B CN 115978717B CN 202211492355 A CN202211492355 A CN 202211492355A CN 115978717 B CN115978717 B CN 115978717B
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- heat exchanger
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- 238000010257 thawing Methods 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides a defrosting method and an air conditioner, and relates to the technical field of air conditioners. The defrosting method is applied to an air conditioner, the air conditioner comprises a defrosting device and an outdoor heat exchanger, the defrosting device comprises a defrosting component and a moving component which are connected with each other, the moving component is used for driving the defrosting component to move on the surface of the outdoor heat exchanger so as to remove frosting on the surface of the outdoor heat exchanger, and the defrosting method comprises the following steps: judging whether frosting conditions of the outdoor heat exchanger are met or not in the process that the air conditioner operates in a heating mode; and if the frosting condition is judged to be met, controlling the motion assembly to drive the defrosting assembly to do one-time reciprocating motion between the two opposite ends of the outdoor heat exchanger at intervals of preset time so as to thin the thickness of the frost layer on the surface of the outdoor heat exchanger. The defrosting method provided by the invention can actively control the thickness of the frost layer on the surface of the outdoor heat exchanger before the defrosting mode is operated, and the heating effect is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a defrosting method and an air conditioner.
Background
In the process of operating the air conditioner in the heating mode, the outdoor heat exchanger thereof absorbs heat from the outdoor environment. When the outdoor environment temperature is low and the humidity is high, the surface of the outdoor heat exchanger is extremely easy to frost.
Before reaching the condition of the defrosting mode of the air conditioner, the thickness of the frost layer on the surface of the outdoor heat exchanger is continuously increased, so that the heat exchange efficiency is continuously reduced, and the heating effect is seriously affected.
Disclosure of Invention
The invention solves the problem that the thickness of the surface frost layer of the outdoor heat exchanger is continuously increased before the existing air conditioner operates in a defrosting mode, and the heating effect is seriously affected.
In order to solve the problems, the invention provides a defrosting method which can actively control the thickness of a frost layer on the surface of an outdoor heat exchanger before a defrosting mode is operated, and improves the heating effect.
The embodiment of the invention provides a technical method which comprises the following steps:
A defrosting method applied to an air conditioner, the air conditioner comprising a defrosting device and an outdoor heat exchanger, the defrosting device comprising a defrosting assembly and a moving assembly which are connected with each other, the moving assembly being used for driving the defrosting assembly to move on the surface of the outdoor heat exchanger so as to remove frost on the surface of the outdoor heat exchanger, the defrosting method comprising:
judging whether frosting conditions of the outdoor heat exchanger are met or not in the process that the air conditioner operates in a heating mode;
And if the frosting condition is judged to be met, controlling the motion assembly to drive the defrosting assembly to do one-time reciprocating motion between the two opposite ends of the outdoor heat exchanger at intervals of preset time length so as to thin the thickness of the frost layer on the surface of the outdoor heat exchanger.
According to the defrosting method provided by the embodiment of the invention, when the frosting of the surface of the outdoor heat exchanger of the air conditioner is judged, the motion assembly is controlled to thin the thickness of the frost layer on the surface of the outdoor heat exchanger once every preset time, so that the continuous increase of the thickness of the frost layer on the surface of the outdoor heat exchanger is avoided, and the heating effect is improved.
In an alternative embodiment, the frosting conditions are:
The temperature of the outer disc of the air conditioner is smaller than or equal to the difference value between the outdoor environment temperature and the first temperature coefficient, wherein the value range of the first temperature coefficient is 3-16 ℃.
In an alternative embodiment, the frosting conditions are:
The air outlet temperature difference of the air conditioner in the first reference time period is larger than or equal to a second temperature coefficient, wherein the value range of the second temperature coefficient is 1-5 ℃.
In an alternative embodiment, the frosting conditions are:
the external machine current difference of the air conditioner in the second reference time period is larger than or equal to a current coefficient, wherein the value range of the current coefficient is 0.1A to 2A.
In an alternative embodiment, the frosting conditions are:
the time length of the compressor of the air conditioner is greater than or equal to a time length threshold value, wherein the value range of the time length threshold value is 10min to 120min.
In an alternative embodiment, the frosting conditions are:
the outdoor environment temperature is in a preset temperature interval, and the operation time of the compressor of the air conditioner is in a preset time interval.
In an alternative embodiment, the defrosting method further includes:
When the air conditioner is started in a heating mode, the motion assembly is controlled to drive the defrosting assembly to reciprocate between two opposite ends of the outdoor heat exchanger, and the external fan of the air conditioner is synchronously controlled to reversely rotate;
And after the defrosting component reciprocates between the two opposite ends of the outdoor heat exchanger for preset times, controlling the motion component to stop, and synchronously controlling the external fan of the air conditioner to rotate positively.
In this embodiment, when heating starts, control motion subassembly drive defrosting subassembly reciprocating motion preset number of times between the both ends that the outdoor heat exchanger is relative to cooperate the outer fan reversal, thereby realize the clearance to the snow on outdoor heat exchanger surface, dust, substances such as ponding, prevent quick frosting.
In an alternative embodiment, the defrosting method further includes:
When the air conditioner starts to operate in the defrosting mode, the motion assembly is controlled to drive the defrosting assembly to continuously reciprocate between the two opposite ends of the outdoor heat exchanger until the air conditioner stops operating in the defrosting mode.
In this embodiment, when the air conditioner starts to operate in the defrosting mode, the motion component is controlled to drive the defrosting component to continuously reciprocate between the two opposite ends of the outdoor heat exchanger, defrosting is assisted, defrosting efficiency is improved, and defrosting time is shortened.
In an alternative embodiment, the defrosting assembly comprises an inner brush and an outer brush which are respectively connected with the moving assembly, the inner brush is used for moving on the inner side wall of the outdoor heat exchanger under the driving of the moving assembly, and the outer brush is used for moving on the outer side wall of the outdoor heat exchanger under the driving of the moving assembly.
An embodiment of the present invention also provides an air conditioner including a controller for performing the foregoing defrosting method, the defrosting method being applied to an air conditioner including a defrosting device and an outdoor heat exchanger, the defrosting device including a defrosting assembly and a moving assembly connected to each other, the moving assembly being for driving the defrosting assembly to move on a surface of the outdoor heat exchanger to remove frost from the surface of the outdoor heat exchanger, the defrosting method including: judging whether frosting conditions of the outdoor heat exchanger are met or not in the process that the air conditioner operates in a heating mode; and if the frosting condition is judged to be met, controlling the motion assembly to drive the defrosting assembly to do one-time reciprocating motion between the two opposite ends of the outdoor heat exchanger at intervals of preset time length so as to thin the thickness of the frost layer on the surface of the outdoor heat exchanger.
When the air conditioner provided by the embodiment of the invention judges that the surface of the outdoor heat exchanger of the air conditioner frosts, the motion assembly is controlled to thin the thickness of the frost layer on the surface of the outdoor heat exchanger once every preset time, so that the continuous increase of the thickness of the frost layer on the surface of the outdoor heat exchanger is avoided, and the heating effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a connection structure between a defrosting device and an outdoor heat exchanger of an air conditioner according to the present embodiment under a first view angle;
fig. 2 is a schematic structural view of a connection structure of the defrosting device and the outdoor heat exchanger at a second view angle;
fig. 3 is a flow chart of a defrosting method according to the present embodiment.
Reference numerals illustrate:
100-defrosting device; 110-a defrost assembly; 111-an inner brush; 112-an outer brush; 120-a motion assembly; 200-outdoor heat exchanger.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Referring to fig. 1 and 2 in combination, the air conditioner provided in this embodiment includes a controller (not shown), a defrosting device 100 and an outdoor heat exchanger 200, wherein the controller is electrically connected to the defrosting device 100 and is used for controlling the defrosting device 100 to remove frost on the surface of the outdoor heat exchanger 200. It is understood that the air conditioner includes an indoor unit and an outdoor unit, and the defrosting device 100 and the indoor heat exchanger are both disposed at the outdoor unit.
The defrosting apparatus 100 includes a defrosting assembly 110 and a moving assembly 120, the moving assembly 120 is electrically connected to the controller, and the moving assembly 120 is connected to the defrosting assembly 110 for driving the defrosting assembly 110 to move on the surface of the outdoor heat exchanger 200, thereby removing frost from the surface of the outdoor heat exchanger 200.
In the present embodiment, the defrosting assembly 110 includes an inner brush 111 and an outer brush 112 respectively connected to the moving assembly 120, the inner brush 111 is disposed at the inner side of the outdoor heat exchanger 200, and the outer brush 112 is disposed at the outer side of the outdoor heat exchanger 200. The outdoor heat exchanger 200 in this embodiment is a rectangular in-line condenser, the lengths of the inner brush 111 and the outer brush 112 extend along the height direction of the outdoor heat exchanger 200, and the corresponding coverage of the inner sidewall and the outer sidewall of the outdoor heat exchanger 200 is achieved in the height direction of the outdoor heat exchanger 200. The moving assembly 120 is disposed on the top wall of the outdoor heat exchanger 200, and is used for driving the inner brush 111 and the outer brush 112 to reciprocate between opposite ends in the length direction of the outdoor heat exchanger 200 in synchronization.
It can be appreciated that when the inner brush 111 moves from one end to the other end in the length direction of the outdoor heat exchanger 200 under the driving of the moving assembly 120, the sweeping area thereof covers the inner side wall of the outdoor heat exchanger 200, so that the inner side wall of the outdoor heat exchanger 200 can be completely defrosted. Similarly, when the outer brush 112 is driven by the moving assembly 120 to move from one end to the other end in the length direction of the outdoor heat exchanger 200, the area swept by the outer brush can cover the outer side wall of the outdoor heat exchanger 200, so that the outer side wall of the outdoor heat exchanger 200 can be completely defrosted.
In this embodiment, the moving assembly 120 actually includes a driving member and a conveying rail, the conveying rail is disposed at the top of the outdoor heat exchanger 200 and extends along the length direction of the outdoor heat exchanger 200, the inner brush 111 and the outer brush 112 are matched with the conveying rail, and the driving member drives the inner brush 111 and the outer brush 112 to slide along the conveying rail. In other embodiments, the operation rail and the driving member may be separately provided to the casing of the outdoor unit, which corresponds to that the defrosting device 100 may not be connected to the outdoor heat exchanger 200.
In practical application, the controller controls the motion assembly 120 to drive the inner brush 111 and the outer brush 112 to synchronously clean frosting on the inner side wall and the outer side wall of the outdoor heat exchanger 200 according to frosting condition of the outdoor heat exchanger 200, thereby realizing control of thickness of frost layer.
Referring to fig. 3 in combination, fig. 3 is a flow chart illustrating a defrosting method according to the present embodiment, where the defrosting method is applied to an air conditioner according to the present embodiment, and specifically includes:
In step S101, when the air conditioner is turned on in the heating mode, the control motion assembly 120 drives the defrosting assembly 110 to reciprocate between opposite ends of the outdoor heat exchanger 200, and synchronously controls the reverse rotation of the outdoor fan of the air conditioner.
In fact, the defrosting requirement only occurs when the air conditioner is operating in the heating mode, so that the moving assembly 120 of the defrosting apparatus 100 is powered on when the air conditioner is turned on in the heating mode, and the moving assembly 120 of the defrosting apparatus 100 is not powered on when the air conditioner is turned on in the cooling mode or the fresh air mode.
When the air conditioner is started in the heating mode, in order to avoid that the outdoor heat exchanger 200 frosts rapidly due to snow or water accumulated on the surface of the outdoor heat exchanger 200 in the heating mode operation process, before the heating mode operation is started, the controller controls the motion assembly 120 to drive the inner brush 111 and the outer brush 112 to reciprocate between two ends of the outdoor heat exchanger 200, and synchronously controls the reverse rotation of the outer fan of the air conditioner, so that the cleaning of snow, water accumulated and other substances on the inner side wall and the outer side wall of the outdoor heat exchanger 200 is realized.
It is understood that the reverse rotation of the external blower means the rotation direction of the direct blowing outdoor heat exchanger 200, which is opposite to the rotation direction of the external blower in the heating mode.
Further, the defrosting method may further include:
In step S102, after the defrosting assembly 110 reciprocates between opposite ends of the outdoor heat exchanger 200 a preset number of times, the moving assembly 120 is controlled to stop and the outdoor fan of the air conditioner is synchronously controlled to rotate in a forward direction.
In this embodiment, the preset number of times is two, that is, the inner brush 111 is reciprocally swept twice on the inner sidewall of the outdoor heat exchanger 200, and the outer brush 112 is reciprocally swept twice on the outer sidewall of the outdoor heat exchanger 200. In other embodiments, the specific value of the preset number of times may be adjusted according to the actual application condition. It can be understood that after the cleaning is finished twice, the controller controls the air conditioner to normally operate the heating mode, the compressor is started, and the external fan rotates positively.
Further, the defrosting method may further include:
step S103, during operation of the air conditioner in the heating mode, determines whether or not the frosting condition of the outdoor heat exchanger 200 is satisfied.
In this embodiment, there are a plurality of frosting conditions, and only one of them is required to be satisfied, the subsequent step S104 can be executed. Specifically, the plurality of frosting conditions include: the temperature of an outer disc of the air conditioner is smaller than or equal to the difference value between the outdoor environment temperature and a first temperature coefficient, wherein the value range of the first temperature coefficient is 3-16 ℃; the air outlet temperature difference of the air conditioner in the first reference time period is larger than or equal to a second temperature coefficient, wherein the value range of the second temperature coefficient is 1-5 ℃; the external machine current difference of the air conditioner in the second reference time period is larger than or equal to the current coefficient, wherein the value range of the current coefficient is 0.1A to 2A; the running time length of the compressor of the air conditioner is greater than or equal to a time length threshold, wherein the value range of the time length threshold is 10min to 120min.
The air outlet temperature difference of the air conditioner in the first reference time length refers to the difference value between the air outlet temperature of the indoor unit currently acquired and the air outlet temperature before the first reference time length, and the specific value of the first reference time length can be adjusted according to the specific strong and weak gear of the air conditioner. The external machine current difference of the air conditioner in the second reference time length refers to the difference value between the currently acquired external machine current and the external machine current before the second reference time length, and likewise, the specific value of the second reference time length can be adjusted according to the practical application condition.
In addition, the plurality of frosting conditions further includes: the outdoor environment temperature is in a preset temperature interval, and the operation time of the compressor of the air conditioner is in a preset time interval. In this embodiment, the preset temperature interval and the preset time interval are plural and have a one-to-one correspondence, when the preset temperature interval is [ T1, ++ infinity), the preset duration interval is [ T1, ++ infinity); when the preset temperature interval is [ T2, T1), the preset duration interval is [ T2, ++ infinity); when the preset temperature interval is [ T3, T2), the preset duration interval is [ T3, ++ infinity); when the preset temperature interval is (- ≡T 3), the preset time interval is [ T4, + ] infinity.
Specifically, the value range of T1 is 4 ℃ to 10 ℃, and in the embodiment, 7 ℃ is preferable; t2 has a value ranging from 0 ℃ to 3 ℃, preferably 2 ℃ in the embodiment; t3 is in the range of-10 ℃ to-1 ℃, and in the embodiment, the temperature is preferably-5 ℃; the value range of t1 is 60min to 120min, and 90min is preferable in the embodiment; the value range of t2 is 30min to 60min, and 45min is preferable in the embodiment; the value range of t3 is 20min to 60min, and 30min is preferable in the embodiment; the value of t4 ranges from 30min to 60min, preferably 45min in this embodiment.
Further, the defrosting method may further include:
In step S104, if it is determined that the frosting condition is satisfied, the motion control module 120 drives the defrosting module 110 to reciprocate between the opposite ends of the outdoor heat exchanger 200 once every a preset time period to reduce the thickness of the frost layer on the surface of the outdoor heat exchanger 200.
The frosting condition is determined to be satisfied, which indicates that the surface of the outdoor heat exchanger 200 starts frosting, in which case, in order to avoid serious influence on heat exchange efficiency caused by continuous high thickness of the frost layer on the surface of the outdoor heat exchanger 200 before the defrosting mode is triggered, the controller controls the moving assembly 120 to drive the defrosting assembly 110 to reciprocate between opposite ends of the outdoor heat exchanger 200 every preset time period so as to periodically reduce the thickness of the frost layer.
Specifically, the inner brush 111 corresponds to thinning the thickness of the frost layer on the inner sidewall of the outdoor heat exchanger 200, and the outer brush 112 corresponds to thinning the thickness of the frost layer on the outer sidewall of the outdoor heat exchanger 200. The value range of the preset duration is 5min to 20min, and the optimal value is 9min in the embodiment.
Through brushing the frost layer regularly under the heating mode, control the frost layer thickness in thinner within range, guarantee the heat transfer effect, reduce the windage to lengthen the defrosting cycle of air conditioner, promote user's comfort level.
Further, the defrosting method may further include:
In step S105, when the air conditioner starts the defrosting mode, the control movement assembly 120 drives the defrosting assembly 110 to continuously reciprocate between opposite ends of the outdoor heat exchanger 200 until the air conditioner stops the defrosting mode.
When the air conditioner satisfies the defrosting condition and switches to the defrosting mode, the controller controls the defrosting device 100 to perform auxiliary defrosting. That is, the controller controls the movement assembly 120 to drive the defrosting assembly 110 to continuously reciprocate between opposite ends of the outdoor heat exchanger 200. Specifically, the inner brush 111 continuously brushes the frost layer on the inner sidewall of the outdoor heat exchanger 200 in a reciprocating manner, and the outer brush 112 continuously brushes the frost layer on the outer sidewall of the outdoor heat exchanger 200 in a reciprocating manner, so that the defrosting speed is increased, excessive heat consumption of the air conditioner is avoided, and the user comfort is ensured.
In summary, the defrosting method provided in this embodiment can prevent the outdoor heat exchanger 200 from frosting quickly after the heating mode is started, can control the thickness of the frost layer in a thinner range during the heating process, and can also shorten the operation duration of the defrosting mode.
The air conditioner applying the defrosting method provided by the embodiment has the characteristics of better heating effect, shorter defrosting duration and lower defrosting frequency, and can obviously improve user experience.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (8)
1. A defrosting method applied to an air conditioner, characterized in that the air conditioner comprises a defrosting device (100) and an outdoor heat exchanger (200), the defrosting device (100) comprises a defrosting component (110) and a moving component (120) which are connected with each other, the moving component (120) is used for driving the defrosting component (110) to move on the surface of the outdoor heat exchanger (200) so as to remove frosting on the surface of the outdoor heat exchanger (200), and the defrosting method comprises the following steps:
Judging whether frosting conditions of the outdoor heat exchanger (200) are met or not in the process that the air conditioner operates in a heating mode;
If the frosting condition is judged to be met, controlling the motion assembly (120) to drive the defrosting assembly (110) to do one-time reciprocating motion between two opposite ends of the outdoor heat exchanger (200) every preset time length so as to thin the thickness of the frost layer on the surface of the outdoor heat exchanger (200);
The defrosting method further comprises the following steps:
when the air conditioner is started in a heating mode, the motion assembly (120) is controlled to drive the defrosting assembly (110) to reciprocate between two opposite ends of the outdoor heat exchanger (200), and the external fan of the air conditioner is synchronously controlled to reversely rotate;
After the defrosting assembly (110) reciprocates between the two opposite ends of the outdoor heat exchanger (200) for a preset number of times, controlling the moving assembly (120) to stop and synchronously controlling an external fan of the air conditioner to rotate forwards;
When the air conditioner starts to operate in the defrosting mode, the motion assembly (120) is controlled to drive the defrosting assembly (110) to continuously reciprocate between two opposite ends of the outdoor heat exchanger (200) until the air conditioner stops operating in the defrosting mode.
2. The defrosting method as set forth in claim 1, wherein the frosting condition is:
The temperature of the outer disc of the air conditioner is smaller than or equal to the difference value between the outdoor environment temperature and the first temperature coefficient, wherein the value range of the first temperature coefficient is 3-16 ℃.
3. The defrosting method as set forth in claim 1, wherein the frosting condition is:
The air outlet temperature difference of the air conditioner in the first reference time period is larger than or equal to a second temperature coefficient, wherein the value range of the second temperature coefficient is 1-5 ℃.
4. The defrosting method as set forth in claim 1, wherein the frosting condition is:
the external machine current difference of the air conditioner in the second reference time period is larger than or equal to a current coefficient, wherein the value range of the current coefficient is 0.1A to 2A.
5. The defrosting method as set forth in claim 1, wherein the frosting condition is:
the time length of the compressor of the air conditioner is greater than or equal to a time length threshold value, wherein the value range of the time length threshold value is 10min to 120min.
6. The defrosting method as set forth in claim 1, wherein the frosting condition is:
the outdoor environment temperature is in a preset temperature interval, and the operation time of the compressor of the air conditioner is in a preset time interval.
7. The defrosting method according to claim 1, wherein the defrosting assembly (110) includes an inner brush (111) and an outer brush (112) respectively connected to the moving assembly (120), the inner brush (111) being for moving on an inner side wall of the outdoor heat exchanger (200) under the driving of the moving assembly (120), the outer brush (112) being for moving on an outer side wall of the outdoor heat exchanger (200) under the driving of the moving assembly (120).
8. An air conditioner comprising a controller for performing the defrosting method as set forth in any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211492355.8A CN115978717B (en) | 2022-11-25 | 2022-11-25 | Defrosting method and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211492355.8A CN115978717B (en) | 2022-11-25 | 2022-11-25 | Defrosting method and air conditioner |
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| CN115978717A CN115978717A (en) | 2023-04-18 |
| CN115978717B true CN115978717B (en) | 2024-06-11 |
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| CN215983491U (en) * | 2021-09-23 | 2022-03-08 | 德州大商净化空调设备有限公司 | Defrosting device of fin heat exchanger |
| WO2022222940A1 (en) * | 2021-04-20 | 2022-10-27 | 青岛海尔空调电子有限公司 | Air conditioning unit and defrosting control method therefor |
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|---|---|---|---|---|
| CN104061650A (en) * | 2013-03-19 | 2014-09-24 | 约克广州空调冷冻设备有限公司 | Frosting judgment method of air-cooled heat pump air conditioner |
| CN106196422A (en) * | 2016-06-28 | 2016-12-07 | 青岛海尔空调器有限总公司 | The frostless control method of liquid desiccant air conditioning |
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| CN112197489A (en) * | 2020-07-17 | 2021-01-08 | Tcl家用电器（合肥）有限公司 | Evaporator defrosting method and device, refrigerator, computer equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN115978717A (en) | 2023-04-18 |
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