CN112923514A - Control method for defrosting of air conditioner - Google Patents
Control method for defrosting of air conditioner Download PDFInfo
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- CN112923514A CN112923514A CN202110214957.6A CN202110214957A CN112923514A CN 112923514 A CN112923514 A CN 112923514A CN 202110214957 A CN202110214957 A CN 202110214957A CN 112923514 A CN112923514 A CN 112923514A
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- defrosting
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- 238000010257 thawing Methods 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000004378 air conditioning Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method for defrosting of an air conditioner, which belongs to the technical field of air conditioners and aims to solve the problem that the air conditioner cannot accurately judge the defrosting opportunity to cause frosting failure or frostless defrosting; the control method for defrosting the air conditioner provided by the invention selectively corrects the dew point temperature of next defrosting by calling the defrosting time of last defrosting, namely when the indoor temperature or the outdoor humidity changes, the dew point temperature can be adaptively adjusted according to the frosting degree of the outdoor unit, so that the air conditioner can accurately judge the defrosting time, the defrosting effect is improved, and the phenomenon of frosting failure or frosting failure can be avoided.
Description
Technical Field
The invention belongs to the field of air conditioners, and particularly provides a control method for defrosting of an air conditioner.
Background
The air conditioner inevitably has the phenomenon that the air conditioner frosts in the heating process in winter, influences the heat exchange of the refrigerant of the outdoor unit and the outdoor environment, leads to the temperature in the room to promote more slowly, needs to defrost the air conditioner.
The outdoor unit of the existing air conditioner is provided with an outer ring temperature sensor for detecting the temperature of the external environment and an outer coil temperature sensor for detecting the temperature of an outer coil. The existing defrosting control method comprises the following steps: and calculating the condensation point temperature TL at the temperature through the external environment temperature, and defrosting when the temperature Te of the external coil pipe is less than or equal to TL for a certain time.
However, when the indoor temperature or the outdoor humidity changes, the degree of frosting of the outdoor unit is different at the same external environment temperature, and the timing of entering defrosting cannot be accurately determined by the above method, so that the phenomenon of frosting does not occur or frost does not occur.
Disclosure of Invention
The method aims to solve the problems in the prior art, namely, the phenomenon that the frosting is not finished or is not finished due to the fact that the defrosting time cannot be accurately judged by the existing method is solved.
The invention provides a defrosting control method for an air conditioner, wherein the air conditioner comprises an outdoor unit, and the defrosting control method comprises the following steps:
when the air conditioner is in heating operation, acquiring the outdoor environment temperature and the coil temperature of the outdoor unit;
calculating the dew point temperature according to the outdoor environment temperature;
calling the defrosting time of the last defrosting;
selectively correcting the dew point temperature according to the defrosting time of the last defrosting;
comparing the coil temperature of the outdoor unit with the corrected dew point temperature;
and if the temperature of the coil of the outdoor unit is less than or equal to the corrected dew point temperature and the set first time duration is continued, enabling the air conditioner to enter a defrosting mode.
In the above preferred embodiment, the step of "selectively correcting the dew point temperature according to the defrosting time of the previous defrosting" specifically includes:
increasing the dew point temperature if the defrost time of the last defrost is less than or equal to a first time threshold;
and if the defrosting time of the last defrosting is larger than or equal to the second time threshold, reducing the dew point temperature.
In the above preferred embodiment, the step of "increasing the dew point temperature" specifically includes: increasing the dew point temperature by a first temperature value;
the step of "lowering the dew point temperature" comprises: lowering the dew point temperature by a second temperature value; wherein the first temperature value is equal to the second temperature value.
In the above preferred embodiment, the step of "selectively correcting the dew point temperature according to the defrosting time of the previous defrosting" specifically includes:
and if the defrosting time of the last defrosting is larger than the first time threshold and smaller than a second time threshold, keeping the dew point temperature unchanged.
In the above preferred embodiment, the defrosting control method further includes:
and setting the longest defrosting time threshold of the air conditioner, wherein the longest defrosting time threshold is greater than the second time threshold.
In the above preferred embodiment, before the step of "obtaining the outdoor environment temperature and the coil temperature of the outdoor unit", the defrosting control method further includes: and setting the shortest heating time of the air conditioner.
In the above preferred technical solution, the shortest air-conditioning heating time is 40 minutes to 50 minutes.
In the above preferred embodiment, the defrosting control method further includes:
acquiring the temperature of a coil of an outdoor unit in the process of executing a defrosting mode by the air conditioner;
and if the temperature of the coil of the outdoor unit is greater than or equal to a set temperature threshold value, enabling the air conditioner to exit the defrosting mode.
In the above preferred embodiment, the condition that the air conditioner exits the defrost mode further includes:
and when the temperature of the coil of the outdoor unit is greater than or equal to the set temperature threshold value, the air conditioner continuously keeps the defrosting mode, and the air conditioner exits the defrosting mode after the set second duration.
In the above preferred technical solution, the set temperature threshold is 5 degrees celsius, the first time period is 2 minutes, and the second time period is 5 seconds to 10 seconds.
Compared with the prior art, the control method for defrosting the air conditioner provided by the embodiment of the invention has the advantages that the dew point temperature is selectively corrected by adjusting the defrosting time of the last defrosting, namely when the indoor temperature or the outdoor humidity changes, the dew point temperature can be adaptively adjusted according to the frosting degree of the outdoor unit, so that the air conditioner can accurately judge the defrosting time, the defrosting effect is improved, and the phenomenon of frosting failure or frosting absence can be avoided.
Drawings
Fig. 1 is a flowchart illustrating a control method for defrosting an air conditioner according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The embodiment of the invention provides a control method for defrosting of an air conditioner, wherein the air conditioner comprises a compressor, an outdoor unit and an indoor unit, the outdoor unit comprises an outdoor heat exchanger and an outdoor fan, and the indoor unit comprises an indoor heat exchanger and an indoor fan; the outdoor unit is provided with an outer ring temperature sensor and an outer coil temperature sensor, the outer ring temperature sensor is used for detecting the environment temperature of the outdoor unit, the outer coil temperature sensor is used for detecting the coil temperature of the outdoor unit, namely the outer coil temperature sensor is used for detecting the coil temperature of the evaporator.
In the heating mode of the air conditioner, the indoor heat exchanger can be used as a condenser and can exchange heat with the indoor environment to raise the indoor temperature; the outdoor heat exchanger can be used as an evaporator to absorb heat of the external environment, so that the outdoor heat exchanger is easy to frost.
Specifically, the compressor flows into the indoor heat exchanger through high-temperature and high-pressure gas generated after the refrigerant works, and exchanges heat with air in an indoor environment, in the process, after the high-temperature and high-pressure gas releases heat, the high-temperature and high-pressure gas flows into the throttling device through low-temperature and high-pressure liquid, the low-temperature and low-pressure liquid is converted into low-temperature and low-pressure liquid through the throttling device and flows into the outdoor heat exchanger, the outdoor heat exchanger absorbs external heat, the low-temperature and low-pressure gas obtained after the low-temperature and low-pressure liquid is converted. However, the outdoor heat exchanger absorbs external heat, so that the coil is easily frosted, which affects the heating efficiency of the air conditioner, and the air conditioner needs to be defrosted.
As shown in fig. 1, the method for controlling defrosting of an air conditioner provided by this embodiment includes the following steps:
and S101, starting a heating mode by the air conditioner.
Specifically, the power supply of the air conditioner is started to enable the air conditioner to be in a working state, and if the heating mode is selected, the air conditioner enters the heating mode, so that the indoor temperature can be increased.
S102, obtaining the outdoor environment temperature and the outdoor unit coil temperature.
Specifically, before acquiring the outdoor environment temperature and the outdoor unit coil temperature, the air conditioner needs to meet the set shortest heating time, and the shortest heating time can be set to be 40-50 minutes; namely, after the air conditioner operates in the heating mode for 40 to 50 minutes, the ambient temperature of the outdoor unit is obtained by the outer ring temperature sensor, and the coil temperature of the outdoor unit is obtained by the outer coil temperature sensor.
And S103, calculating the dew point temperature according to the outdoor environment temperature.
Specifically, the dew point temperature can be calculated by the dew point calculation formula on the basis of acquiring the outdoor environment temperature; here, the dew point temperature can be obtained by the following dew point calculation formula:
tes ═ a × Tai + B; where Tes is the dew point temperature, A is the coefficient of calculation of the outdoor ambient temperature, Tai is the outdoor ambient temperature, and B is the calculation constant.
And S104, calling the defrosting time of the last defrosting.
Specifically, before determining whether the air conditioner enters the defrosting mode, the last defrosting time needs to be called, so as to correct the dew point temperature of the next entering defrosting mode.
It can be understood that before the air conditioner is judged whether to enter the defrosting mode or not and after the air conditioner runs for a set time, the defrosting time of the last defrosting can be called; in this embodiment, the following description will be given by taking an example in which the defrosting time of the last defrosting is taken after the dew point temperature is calculated and obtained. The control method for defrosting of the air conditioner is suitable for non-first defrosting of the air conditioner; for example, when the air conditioner performs the second defrosting, the dew point temperature of the second defrosting can be adjusted in combination with the first defrosting time. If the air conditioner is defrosted for the first time, the defrosting time of the last defrosting cannot be obtained, the defrosting time can be directly compared with the temperature of the coil of the outdoor unit according to the dew point temperature, and if the temperature of the coil is less than or equal to the dew point temperature, the air conditioner enters a defrosting mode.
And S105, selectively correcting the dew point temperature according to the defrosting time of the last defrosting.
Specifically, the air conditioner of the present embodiment is provided with a first time threshold and a second time threshold with respect to a normal defrost cycle, wherein the second time threshold is greater than the first time threshold. That is, the present embodiment compares the actual defrosting time with the set normal defrosting time, and if the actual defrosting time is less than the set normal defrosting time, it indicates that the actual frosting degree of the air conditioner is small, and the air conditioner enters the defrosting mode in advance, so that the air conditioner is defrosted frequently. If the actual defrosting time is longer than the set normal defrosting time, the actual frosting degree of the air conditioner is high, and the air conditioner delays to enter a defrosting mode, so that the heating efficiency of the air conditioner is influenced.
In view of the above problems, the next dew point temperature can be adaptively adjusted according to the actual frosting degree of the air conditioner. Illustratively, the dew point temperature is increased if the defrost time of the last defrost is less than or equal to the first time threshold. For example, if the last defrosting time is less than the first time threshold, it indicates that the last defrosting time is less than the set normal defrosting time, and the dew point temperature of the next defrosting mode can be raised to control the next defrosting time within the normal defrosting time. It can be understood that, if the last defrosting time is equal to the first time threshold, the dew point temperature can be raised in order to further optimize the defrosting time of the air conditioner.
And if the defrosting time of the last defrosting is larger than or equal to the second time threshold, reducing the dew point temperature. For example, if the last defrosting time is greater than the second time threshold, it indicates that the last defrosting time is greater than the normal defrosting time, so that the dew point temperature can be lowered to adjust the defrosting time of the air conditioner, and thus the defrosting time is controlled within the normal defrosting time. It can be understood that, if the last defrosting time is equal to the second time threshold, the dew point temperature can also be reduced in order to further optimize the defrosting time of the air conditioner.
And if the last defrosting time is greater than the first time threshold and less than the second time threshold, keeping the dew point temperature unchanged.
Further, the first time threshold related to the present embodiment may be set to 3 minutes, and the second time threshold may be set to 8 minutes, that is, when the last defrosting time is less than or equal to 3 minutes, the dew point temperature may be raised, and at the same time, the dew point temperature may be raised by the first temperature value, which may be 2 ℃. When the last defrosting time is greater than or equal to 8 minutes, the dew point temperature can be lowered by a second temperature value, wherein the first temperature value can be equal to the second temperature value, and the second temperature value can also be 2 ℃. When the last defrosting time is between 3 minutes and 8 minutes, the dew point temperature of the next defrosting mode is not required to be adjusted.
And S106, if the temperature of the coil of the outdoor unit is less than or equal to the corrected dew point temperature, enabling the air conditioner to enter a defrosting mode.
Specifically, the corrected dew point temperature is compared with the coil temperature of the outdoor unit acquired in real time, if the coil temperature is less than or equal to the corrected dew point temperature, the air conditioner enters a defrosting state, otherwise, the air conditioner exits the state.
The control method for defrosting the air conditioner selectively corrects the dew point temperature by adjusting the defrosting time of the last defrosting, namely when the indoor temperature or the outdoor humidity changes, the dew point temperature can be adaptively adjusted according to the frosting degree of the outdoor unit, so that the air conditioner can accurately judge the defrosting time, the defrosting effect is improved, and the phenomenon of frosting failure or frostless defrosting can be avoided.
In step 106, the condition for the air conditioner to enter the defrost mode further includes: and when the temperature of the coil pipe is less than or equal to the corrected dew point temperature and lasts for the first time, the air conditioner enters a defrosting mode. The first time period may be 2-3 minutes, for example, when the coil temperature is less than the dew point temperature and the state is maintained for 2 minutes, the air conditioner is put into the defrosting mode. Due to the arrangement, the misjudgment of the time when the air conditioner enters the defrosting mode due to the error of the temperature of the coil pipe or the dew point temperature can be avoided, and the accuracy of the time when the air conditioner enters the defrosting mode can be improved.
In the defrosting process of the air conditioner, the temperature of the coil of the outdoor unit can be acquired constantly, and if the temperature of the coil of the outdoor unit is greater than or equal to a set temperature threshold value, the air conditioner exits the defrosting mode. It can be understood that the temperature threshold may be 5 ℃, that is, when the temperature of the coil of the outdoor unit is greater than or equal to 5 ℃, it is determined that the outdoor unit is not frosted, and the air conditioner exits the defrosting mode.
Further, in this embodiment, for improving the defrosting effect of the air conditioner, the condition that the air conditioner exits the defrosting mode further includes: and when the temperature of the coil of the outdoor unit is greater than or equal to the set temperature threshold value, the air conditioner continuously keeps the defrosting mode, and the air conditioner exits the defrosting mode after the set second time duration.
The second time period may be 5 seconds to 10 seconds; for example, when the temperature of the coil is more than 5 ℃, the air conditioner can automatically exit the defrosting mode or switch to the heating mode after keeping the defrosting state for 5 seconds. Therefore, the defrosting effect of the air conditioner can be ensured, and the heating efficiency of the air conditioner is enhanced.
On the basis of the above embodiment, the method for controlling defrosting of an air conditioner provided by the present invention further includes: the air conditioner is set with the longest defrosting time threshold, and the longest defrosting time threshold is larger than the second time threshold.
Specifically, the air conditioner is provided with a longest defrosting time, which is required to be greater than a second time threshold. The setting can meet the requirement of adjusting the next dew point according to the normal defrosting time and the last defrosting time, and can avoid the influence on the heating effect of the air conditioner caused by the long-time defrosting state of the air conditioner. For example, the longest defrost time set by the air conditioner may be set to 10 minutes, and the second time threshold may be set to 8 minutes; when the actual defrost time is between 8 minutes and 10 minutes, the dew point temperature may drop by 2 ℃.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A defrost control method for an air conditioner, the air conditioner including an outdoor unit, the defrost control method comprising:
when the air conditioner is in heating operation, acquiring the outdoor environment temperature and the coil temperature of the outdoor unit;
calculating the dew point temperature according to the outdoor environment temperature;
calling the defrosting time of the last defrosting;
selectively correcting the dew point temperature according to the defrosting time of the last defrosting;
comparing the coil temperature of the outdoor unit with the corrected dew point temperature;
and if the temperature of the coil of the outdoor unit is less than or equal to the corrected dew point temperature and the set first time duration is continued, enabling the air conditioner to enter a defrosting mode.
2. The defrost control method of claim 1, wherein the step of selectively correcting the dew point temperature based on the last defrost time comprises:
increasing the dew point temperature if the defrost time of the last defrost is less than or equal to a first time threshold;
and if the defrosting time of the last defrosting is larger than or equal to the second time threshold, reducing the dew point temperature.
3. The defrost control method of claim 2, wherein the step of "raising the dew point temperature" specifically comprises: increasing the dew point temperature by a first temperature value;
the step of "lowering the dew point temperature" comprises: lowering the dew point temperature by a second temperature value;
wherein the first temperature value is equal to the second temperature value.
4. The defrost control method of claim 1, wherein the step of selectively correcting the dew point temperature based on the last defrost time comprises:
and if the defrosting time of the last defrosting is larger than the first time threshold and smaller than a second time threshold, keeping the dew point temperature unchanged.
5. The defrost control method of claim 2 or 4, further comprising:
and setting the longest defrosting time threshold of the air conditioner, wherein the longest defrosting time threshold is greater than the second time threshold.
6. The defrost control method of claim 1, further comprising, before the step of obtaining the outdoor ambient temperature and the coil temperature of the outdoor unit:
and setting the shortest heating time of the air conditioner.
7. The defrost control method of claim 6, wherein the shortest air conditioning heating time period is 40 to 50 minutes.
8. The defrost control method of claim 1, further comprising:
acquiring the temperature of a coil of an outdoor unit in the process of executing a defrosting mode by the air conditioner;
and if the temperature of the coil of the outdoor unit is greater than or equal to a set temperature threshold value, enabling the air conditioner to exit the defrosting mode.
9. The defrost control method of claim 8, wherein the condition for the air conditioner to exit the defrost mode further comprises:
and when the temperature of the coil of the outdoor unit is greater than or equal to the set temperature threshold value, the air conditioner continuously keeps the defrosting mode, and the air conditioner exits the defrosting mode after the set second duration.
10. The defrost control method of claim 7 wherein the set temperature threshold is 5 degrees celsius, the first time period is 2 minutes, and the second time period is 5 to 10 seconds.
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| CN202110214957.6A CN112923514A (en) | 2021-02-25 | 2021-02-25 | Control method for defrosting of air conditioner |
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| CN202110214957.6A CN112923514A (en) | 2021-02-25 | 2021-02-25 | Control method for defrosting of air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440507A (en) * | 2022-01-10 | 2022-05-06 | 珠海格力电器股份有限公司 | Defrosting control method of heat pump system |
| WO2023045320A1 (en) * | 2021-09-26 | 2023-03-30 | 青岛海尔中央空调有限公司 | Defrosting control method for air conditioner |
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| CN107166644A (en) * | 2017-05-17 | 2017-09-15 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN111895602A (en) * | 2019-05-06 | 2020-11-06 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN111895596A (en) * | 2019-05-06 | 2020-11-06 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
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2021
- 2021-02-25 CN CN202110214957.6A patent/CN112923514A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166644A (en) * | 2017-05-17 | 2017-09-15 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN111895602A (en) * | 2019-05-06 | 2020-11-06 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN111895596A (en) * | 2019-05-06 | 2020-11-06 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023045320A1 (en) * | 2021-09-26 | 2023-03-30 | 青岛海尔中央空调有限公司 | Defrosting control method for air conditioner |
| CN114440507A (en) * | 2022-01-10 | 2022-05-06 | 珠海格力电器股份有限公司 | Defrosting control method of heat pump system |
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Application publication date: 20210608 |