CN111486530A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN111486530A CN111486530A CN202010243096.XA CN202010243096A CN111486530A CN 111486530 A CN111486530 A CN 111486530A CN 202010243096 A CN202010243096 A CN 202010243096A CN 111486530 A CN111486530 A CN 111486530A
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- heat exchanger
- air conditioner
- throttling device
- opening degree
- throttling
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F24F11/62—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
- F24F11/70—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
- F24F11/84—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 using valves
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
Abstract
The application provides an air conditioner and a control method thereof. The air conditioner comprises a first heat exchanger (2) and a second heat exchanger (3), wherein the first heat exchanger (2) is arranged on the air inlet side of the second heat exchanger (3) and is used for heating air entering the second heat exchanger (3). According to the air conditioner, the frosting of the outdoor heat exchanger can be effectively delayed or even avoided, the indoor unit does not need to be shut down intermittently frequently, the heating efficiency of the air conditioner is improved, and the user use experience is improved.
Description
Technical Field
The application relates to the technical field of air conditioning, in particular to an air conditioner and a control method thereof.
Background
With the development of society, the living standard of people is continuously improved, the pursuit living quality is higher and higher, and the use of air conditioners is more and more common. At present, the air conditioner can make the condenser surface produce the comdenstion water when heating the operation, because external low temperature environment, the comdenstion water can condense and produce the frost layer in the condenser surface, will influence the heat exchange efficiency of condenser along with the thickening on frost layer to influence the effect of heating.
In order to solve the problem that the heating effect is influenced by frost layer accumulation, the frosting condition is generally judged by detecting the temperature of an outer disc through a sensor, when the defrosting requirement is met, the four-way valve is reversed, the outdoor unit is defrosted by switching to a refrigerating mode, and the indoor unit is stopped at the moment so as to prevent cold air from blowing out. In the defrosting mode, the intermittent shutdown of the internal machine can occur, and the user experience is influenced.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide an air conditioner and a control method thereof, which can effectively delay or even avoid frosting of a heat exchanger, so that an internal unit does not need to be stopped intermittently frequently, the working efficiency of the air conditioner is improved, and the user experience is improved.
In order to solve the above problem, the present application provides an air conditioner, including first heat exchanger and second heat exchanger, first heat exchanger sets up the air inlet side at the second heat exchanger to air to getting into the second heat exchanger heats.
Preferably, the air conditioner further comprises a third heat exchanger, the third heat exchanger is connected with the first heat exchanger in series, a first throttling device is arranged on a pipeline between the first heat exchanger and the second heat exchanger, and a second throttling device capable of adjusting the flow rate of a refrigerant flowing through the first heat exchanger is arranged on a pipeline between the third heat exchanger and the first heat exchanger.
Preferably, a check valve is further arranged between the first heat exchanger and the first throttling device.
Preferably, the air conditioner further comprises a fourth heat exchanger, the first heat exchanger and the fourth heat exchanger are connected in parallel and are connected between the third heat exchanger and the first throttling device, and the second throttling device is used for controlling the refrigerant flow of the first heat exchanger.
Preferably, the air conditioner further comprises a compressor, a four-way valve is arranged at an exhaust port of the compressor, and a gas-liquid separator is arranged at a suction port of the compressor.
According to another aspect of the present application, there is provided a control method of the air conditioner described above, including:
detecting the evaporation temperature Te of the second heat exchanger;
and adjusting the second throttling device according to the evaporation temperature Te of the second heat exchanger.
Preferably, the step of adjusting the second throttling means according to the evaporating temperature of the second heat exchanger comprises:
comparing the evaporation temperature Te with a first preset value x 1;
when Te is less than x1, the opening degree of the second throttling device is increased;
when Te is larger than x2, the opening degree of the second throttling device is reduced;
when x1 is not less than Te is not less than x2, the current opening degree of the second throttle device is maintained.
Preferably, the detection system evaporating temperature Te is flushed every y seconds, where y seconds is the frosting period of the second heat exchanger when the first heat exchanger is not provided.
According to another aspect of the present application, there is provided a control method of the air conditioner described above, including:
detecting the evaporation temperature Te of the second heat exchanger;
and adjusting the first throttling device and the second throttling device according to the evaporation temperature Te of the second heat exchanger.
Preferably, the step of adjusting the first throttling means and the second throttling means according to the evaporating temperature of the second heat exchanger comprises:
comparing the evaporation temperature Te with a first preset value x 1;
when Te is less than x1, the opening degree of the second throttling device is increased, and the opening degree of the first throttling device is decreased;
when Te is larger than x2, the opening degree of the second throttling device is reduced, and the opening degree of the first throttling device is increased;
when x1 is more than or equal to Te and less than or equal to x2, the current opening degrees of the first throttling device and the second throttling device are kept.
The application provides an air conditioner, including first heat exchanger and second heat exchanger, first heat exchanger sets up the air inlet side at the second heat exchanger to the air that gets into the second heat exchanger heats. This air conditioner is at the during operation, distribute partial high temperature refrigerant to first heat exchanger, make first heat exchanger can heat the air that enters into in the second heat exchanger, thereby can improve the air temperature that gets into the second heat exchanger under low temperature environment, the air temperature who avoids getting into the second heat exchanger crosses lowly and leads to the phenomenon that the second heat exchanger freezes, effectively delay the setting and avoid the second heat exchanger to take place the phenomenon of frosting, make the inner unit need not frequent intermittent type nature and shut down, improve the heating efficiency of air conditioner, improve user's use and experience.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present application;
fig. 2 is a first control schematic diagram of an air conditioner according to an embodiment of the present application;
fig. 3 is a second control schematic diagram of an air conditioner according to an embodiment of the present application;
fig. 4 is a control flowchart of an air conditioner according to an embodiment of the present application.
The reference numerals are represented as:
1. a compressor; 2. a first heat exchanger; 3. a second heat exchanger; 4. a third heat exchanger; 5. a fourth heat exchanger; 6. a first throttling device; 7. a second throttling device; 8. a one-way valve; 9. a four-way valve; 10. a gas-liquid separator.
Detailed Description
Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, an air conditioner includes a first heat exchanger 2 and a second heat exchanger 3, the first heat exchanger 2 is disposed on an air intake side of the second heat exchanger 3, and heats air entering the second heat exchanger 3.
This air conditioner is at the during operation, distribute part high temperature refrigerant to first heat exchanger 2, make first heat exchanger 2 can heat the air that enters into in the second heat exchanger 3, thereby can improve the air temperature who gets into second heat exchanger 3 under low temperature environment, the air temperature who avoids getting into second heat exchanger 3 crosses lowly and leads to the phenomenon that second heat exchanger 3 freezes, effectively delay the setting and avoid second heat exchanger 3 to take place the phenomenon of frosting, make the interior machine need not frequent intermittent type nature and shut down, improve the heating efficiency of air conditioner, improve user's use and experience.
The air conditioner also comprises a third heat exchanger 4, the third heat exchanger 4 is connected with the first heat exchanger 2 in series, a first throttling device 6 is arranged on a pipeline between the first heat exchanger 2 and the second heat exchanger 3, a second throttling device 7 capable of adjusting the flow of a refrigerant flowing through the first heat exchanger 2 is arranged on a pipeline between the third heat exchanger 4 and the first heat exchanger 2, the flow of the refrigerant entering the first heat exchanger 2 can be adjusted according to the evaporation temperature of the second heat exchanger 3, the air heated by the first heat exchanger 2 can be effectively prevented from frosting on the surface of the second heat exchanger 3, and meanwhile, the adverse effect on indoor temperature adjustment caused by overhigh heating temperature of the temperature air is avoided.
The air conditioner also comprises a fourth heat exchanger 5, the first heat exchanger 2 and the fourth heat exchanger 5 are connected in parallel and are connected between the third heat exchanger 4 and the first throttling device 6, and the second throttling device 7 is used for controlling the refrigerant flow of the first heat exchanger 2. By arranging the fourth heat exchanger 5 connected with the third heat exchanger 4 in series indoors and connecting the fourth heat exchanger 5 with the first heat exchanger 2 in parallel, indoor graded heat exchange can be formed by utilizing the fourth heat exchanger 5, the heating efficiency is improved, meanwhile, the fourth heat exchanger 5 can be used for reducing the influence on the flow of the system refrigerant and the heat absorption of the second heat exchanger 3 during the regulation and control of the second throttling device 7, ensuring the stable and reliable operation of the air conditioner, so that the first heat exchanger 2 mainly plays a role in adjusting the temperature of air entering the second heat exchanger 3, the circulating flow of the refrigerant mainly passes through the fourth heat exchanger 5, the influence of the first heat exchanger 2 on the normal operation of the air conditioner is reduced, and can close first heat exchanger 2 completely under some circumstances for the operation control of air conditioner is more nimble, and control mode is more diversified, is favorable to realizing the high-efficient steady operation of air conditioner more.
Preferably, a check valve 8 is further provided between the first heat exchanger 2 and the first throttling device 6. When first heat exchanger 2 and fourth heat exchanger 5 are parallelly connected, because the refrigerant in first heat exchanger 2 throttles through second throttling arrangement 7, therefore pressure can reduce, if after refrigerant pressure in fourth heat exchanger 5 and the refrigerant pressure in first heat exchanger 2 reached certain conditions, probably lead to the refrigerant to flow back to in first heat exchanger 2, be unfavorable for the normal steady operation of air conditioner, through setting up check valve 8, can effectively avoid the emergence of this condition, guarantee the normal steady operation of first heat exchanger 2.
The air conditioner also comprises a compressor 1, wherein a four-way valve 9 is arranged at an exhaust port of the compressor 1, and a gas-liquid separator 10 is arranged at a suction port of the compressor 1.
The first heat exchanger 2 and the second heat exchanger 3 are, for example, outdoor heat exchangers, and the third heat exchanger 4 and the fourth heat exchanger 5 are, for example, indoor heat exchangers. In the actual working process, the first heat exchanger 2 and the second heat exchanger 3 can be adjusted into indoor heat exchangers, and the third heat exchanger 4 and the fourth heat exchanger 5 can be adjusted into outdoor heat exchangers according to the working state and the working environment of the air conditioner.
Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, the control method of the air conditioner includes: detecting the evaporation temperature Te of the second heat exchanger 3; the second throttle device 7 is adjusted according to the evaporation temperature Te of the second heat exchanger 3.
By the method, the second throttling device 7 can be adjusted in real time according to the evaporating temperature Te of the second heat exchanger 3, the flow of the refrigerant flowing through the first heat exchanger 2 is adjusted by adjusting the second throttling device 7, the condensing temperature of the first heat exchanger 2 is adjusted by adjusting the flow of the refrigerant of the first heat exchanger 2, and then the temperature of the air entering the second heat exchanger 3 is adjusted, so that the purpose of adjusting the evaporating temperature Te is achieved, the frosting of the second heat exchanger 3 can be effectively delayed and even avoided by effectively controlling the evaporating temperature Te, the working efficiency of the air conditioner is effectively improved, the step of stopping the indoor unit to defrost is avoided, and the user experience is improved.
The step of adjusting the second throttling means 7 according to the evaporation temperature of the second heat exchanger 3 comprises: comparing the evaporation temperature Te with a first preset value x 1; when Te is less than x1, the opening degree of the second throttling device 7 is increased; when Te > x2, the opening degree of the second throttle device 7 is decreased; when x1 is not less than Te is not less than x2, the current opening degree of the second throttle device 7 is maintained.
In the present embodiment, the first throttle 6 and the second throttle 7 are, for example, electronic expansion valves, and the opening degree of the throttle is adjusted by adjusting the number of steps of the throttle.
The detection system evaporation temperature Te is flushed every y seconds, where y seconds is the frosting period of the second heat exchanger 3 when the first heat exchanger 2 is not provided. The y value may be calculated by closing the second throttling means 7 and then operating the air conditioner normally, and monitoring the frosting period of the second heat exchanger 3, which is the y value. In order to ensure the accuracy of the measurement results, a plurality of frosting cycles of the second heat exchanger 3 may be acquired, and then the minimum value or the average value is taken as the y value.
Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, the control method of the air conditioner includes: detecting the evaporation temperature Te of the second heat exchanger 3; the first throttle device 6 and the second throttle device 7 are adjusted according to the evaporation temperature Te of the second heat exchanger 3.
The embodiment of the present application is substantially the same as the previous embodiment, except that in this embodiment, the evaporation temperature adjustment of the second heat exchanger 3 is achieved by adjusting the first throttling means 6 and the second throttling means 7 simultaneously. Since the first throttle device 6 influences the evaporating temperature of the second heat exchanger 3 and the second throttle device 7 influences the condensing temperature of the first heat exchanger 2, a more effective and rapid regulation of the evaporating temperature of the second heat exchanger 3 can be achieved by a combination of the two parameters.
The step of adjusting the first throttling means 6 and the second throttling means 7 according to the evaporation temperature of the second heat exchanger 3 comprises: comparing the evaporation temperature Te with a first preset value x 1; when Te is less than x1, the opening degree of the second throttling device 7 is increased, and the opening degree of the first throttling device 6 is decreased; when Te is more than x2, the opening degree of the second throttling device 7 is reduced, and the opening degree of the first throttling device 6 is increased; when x1 is not less than Te and not more than x2, the current opening degrees of the first throttling device 6 and the second throttling device 7 are maintained.
The values of x1 and x2 are 0-5 ℃, x1 is less than x2, generally, x1 takes 0 ℃, and x2 takes 5 ℃.
When the air conditioner is controlled, the high-temperature and high-pressure refrigerant discharged from the compressor 1 firstly enters the third heat exchanger 4 on the indoor side, is divided into two paths of refrigerant after being cooled, one portion of refrigerant enters the fourth heat exchanger 5 on the indoor side, and the other portion of refrigerant enters the first heat exchanger 2 on the outdoor side through the second throttling device 7. Then the two refrigerants are converged, pass through the first throttling device 6, enter the second heat exchanger 3, exchange heat with air in the second heat exchanger 3, enter the vapor-liquid separator 10 and finally return to the compressor 1. The outdoor side return air exchanges heat with the first heat exchanger 2 before contacting with the second heat exchanger 3, the air temperature is improved, and the air humidity is reduced, so that the frosting of the second heat exchanger 3 is effectively inhibited.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (10)
1. An air conditioner is characterized by comprising a first heat exchanger (2) and a second heat exchanger (3), wherein the first heat exchanger (2) is arranged on the air inlet side of the second heat exchanger (3) and heats air entering the second heat exchanger (3).
2. The air conditioner according to claim 1, further comprising a third heat exchanger (4), wherein the third heat exchanger (4) is connected in series with the first heat exchanger (2), a first throttling device (6) is arranged on a pipeline between the first heat exchanger (2) and the second heat exchanger (3), and a second throttling device (7) capable of adjusting the flow rate of the refrigerant flowing through the first heat exchanger is arranged on a pipeline between the third heat exchanger (4) and the first heat exchanger (2).
3. Air conditioner according to claim 2, characterized in that a non-return valve (8) is also provided between the first heat exchanger (2) and the first throttling device (6).
4. The air conditioner according to claim 2, characterized in that the air conditioner further comprises a fourth heat exchanger (5), the first heat exchanger (2) and the fourth heat exchanger (5) are connected in parallel and are commonly connected between the third heat exchanger (4) and the first throttling device (6), and the second throttling device (7) is used for controlling the refrigerant flow of the first heat exchanger (2).
5. The air conditioner according to claim 1, further comprising a compressor (1), wherein a four-way valve (9) is provided at an exhaust port of the compressor (1), and a gas-liquid separator (10) is provided at a suction port of the compressor (1).
6. A control method of an air conditioner according to any one of claims 1 to 5, comprising:
detecting the evaporation temperature Te of the second heat exchanger (3);
the second throttle device (7) is regulated as a function of the evaporation temperature Te of the second heat exchanger (3).
7. The control method of an air conditioner according to claim 6, wherein the step of adjusting the second throttling means (7) according to the evaporating temperature of the second heat exchanger (3) comprises:
comparing the evaporation temperature Te with a first preset value x 1;
when Te is less than x1, the opening degree of the second throttling device (7) is increased;
when Te is larger than x2, the opening degree of the second throttling device (7) is reduced;
when x1 is less than or equal to Te less than or equal to x2, the current opening degree of the second throttling device (7) is maintained.
8. The control method of an air conditioner according to claim 6 or 7, wherein the detection system evaporating temperature Te is flushed every y seconds, wherein y seconds is a frosting period of the second heat exchanger (3) when the first heat exchanger (2) is not provided.
9. A control method of an air conditioner according to any one of claims 1 to 5, comprising:
detecting the evaporation temperature Te of the second heat exchanger (3);
the first throttle device (6) and the second throttle device (7) are adjusted according to the evaporation temperature Te of the second heat exchanger (3).
10. The control method of an air conditioner according to claim 9, wherein the step of adjusting the first throttling means (6) and the second throttling means (7) according to the evaporating temperature of the second heat exchanger (3) comprises:
comparing the evaporation temperature Te with a first preset value x 1;
when Te is less than x1, the opening degree of the second throttling device (7) is increased, and the opening degree of the first throttling device (6) is decreased;
when Te is larger than x2, the opening degree of the second throttling device (7) is reduced, and the opening degree of the first throttling device (6) is increased;
when x1 is not less than Te is not less than x2, the current opening degree of the first throttle device (6) and the second throttle device (7) is maintained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243096.XA CN111486530B (en) | 2020-03-31 | 2020-03-31 | Air conditioner and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243096.XA CN111486530B (en) | 2020-03-31 | 2020-03-31 | Air conditioner and control method thereof |
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| CN111486530A true CN111486530A (en) | 2020-08-04 |
| CN111486530B CN111486530B (en) | 2021-11-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202835631U (en) * | 2012-10-30 | 2013-03-27 | 珠海格力电器股份有限公司 | Heat pump type air conditioning system |
| CN103759456A (en) * | 2014-01-27 | 2014-04-30 | 平武臣 | Heat exchange system of air conditioner or heat pump and defrosting method of heat exchange system |
| CN104832989A (en) * | 2015-04-29 | 2015-08-12 | 广东美的制冷设备有限公司 | Air conditioner and control method for air conditioner |
| CN204693603U (en) * | 2015-01-29 | 2015-10-07 | 珠海格力电器股份有限公司 | A kind of can the air-conditioner of continuous heating defrost |
| CN106524399A (en) * | 2016-10-31 | 2017-03-22 | 芜湖美智空调设备有限公司 | Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner |
| CN110762756A (en) * | 2019-11-01 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Air conditioning system and air conditioning frosting control method |
-
2020
- 2020-03-31 CN CN202010243096.XA patent/CN111486530B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202835631U (en) * | 2012-10-30 | 2013-03-27 | 珠海格力电器股份有限公司 | Heat pump type air conditioning system |
| CN103759456A (en) * | 2014-01-27 | 2014-04-30 | 平武臣 | Heat exchange system of air conditioner or heat pump and defrosting method of heat exchange system |
| CN204693603U (en) * | 2015-01-29 | 2015-10-07 | 珠海格力电器股份有限公司 | A kind of can the air-conditioner of continuous heating defrost |
| CN104832989A (en) * | 2015-04-29 | 2015-08-12 | 广东美的制冷设备有限公司 | Air conditioner and control method for air conditioner |
| CN106524399A (en) * | 2016-10-31 | 2017-03-22 | 芜湖美智空调设备有限公司 | Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner |
| CN110762756A (en) * | 2019-11-01 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Air conditioning system and air conditioning frosting control method |
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