CN109520169B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN109520169B CN109520169B CN201811055067.XA CN201811055067A CN109520169B CN 109520169 B CN109520169 B CN 109520169B CN 201811055067 A CN201811055067 A CN 201811055067A CN 109520169 B CN109520169 B CN 109520169B
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- heat exchanger
- pipeline
- valve body
- gas
- throttling device
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Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000003507 refrigerant Substances 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000010257 thawing Methods 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 abstract description 4
- 239000012071 phase Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
-
- 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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides an air conditioner and a control method of the air conditioner, relates to the technical field of air conditioners, and solves the technical problem that a unit does not have an evaporator when the existing air conditioner operates in a defrosting mode, and a compressor is easy to damage due to liquid impact. The air conditioner comprises a first heat exchanger, a second heat exchanger, a first pipeline and a second pipeline, wherein two ends of the first pipeline are respectively connected with two ends of a first throttling device, the second pipeline is connected between a first outlet end of a four-way valve and a gas-liquid separator in parallel, a second throttling device is arranged on the second pipeline, and an evaporator is connected between an outlet end of the second pipeline and the gas-liquid separator in series. An evaporator is added, when the defrosting mode is operated, the gas-liquid two-phase refrigerant is evaporated into a gas refrigerant, and then the gas refrigerant is separated into gas and liquid after passing through a gas-liquid separator, so that the liquid impact damage of a compressor is avoided, and the reliability of a unit is greatly improved; and in the refrigerating mode and the heating mode, an evaporator is added, then the evaporating temperature is increased, and the unit capacity is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a control method of the air conditioner.
Background
When the air conditioning system heats up, the refrigerant absorbs heat and evaporates in the heat exchanger of the external machine, under certain outdoor temperature and humidity conditions, the water vapor in the air can be gradually condensed on the pipe wall and fins of the heat exchanger of the external machine, and a frost layer is accumulated, so that the heat exchange coefficient of the heat exchanger of the external machine is reduced, and the heating effect of the system is reduced. It is therefore necessary to defrost the external heat exchanger. The current defrosting mode is to change the flow path of the refrigerant, so that the refrigerant with high temperature and high pressure flows through the heat exchanger of the external machine to release heat and condense, then flows through the indoor machine to absorb heat and evaporate back to the compressor, and the circulation is used for defrosting the frost layer on the condenser of the external machine. This defrosting mode requires stopping heating for a while, which adversely affects the user. In addition, in the process of changing the refrigerant flow path, the high-pressure side and the low-pressure side of the system are rapidly switched between a gas phase area and a liquid phase area in a short time, so that the system is subjected to larger impact, devices are easily damaged, and the running risk of the air conditioning system is increased.
As shown in fig. 1, in order not to suspend heating in the defrosting mode, a first pipeline 10' and a second pipeline 22' are added in the system, and the refrigerant can flow into the outdoor heat exchanger 14' directly without passing through the first throttling device 12' during operation, so that the heat carried by the refrigerant is utilized to defrost the outdoor heat exchanger 14 '. However, when the defrosting mode is operated, the unit does not have an evaporator, the gas-liquid two-phase refrigerant is easy to cause liquid impact of the compressor 18' even though passing through the gas-liquid separator 24', the compressor 18' is damaged, and the reliability of the unit is poor.
In addition, during the defrosting mode operation, the pressure value at the position where the third valve body 34 'is connected with the gas-liquid separator 24' is higher than the pressure value after the throttling of the second throttling device 26', the refrigerant passing through the second throttling device 26' cannot flow into the loop, the flow path is disconnected, and the reliability of the unit is reduced.
Disclosure of Invention
The invention aims to provide an air conditioner and a control method of the air conditioner, which are used for solving the technical problem that the compressor is easy to be damaged by liquid impact caused by no evaporator in a unit when the unit operates in a defrosting mode in the prior art. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The invention provides an air conditioner which comprises a first heat exchanger, a second heat exchanger, a first pipeline and a second pipeline, wherein two ends of the first pipeline are respectively connected with two ends of a first throttling device, the second pipeline is connected in parallel between a first outlet end of a four-way valve and a gas-liquid separator, the second pipeline is provided with a second throttling device, and an evaporator is connected in series between an outlet end of the second pipeline and the gas-liquid separator.
Optionally, a first valve body is disposed on the first pipeline.
Optionally, the second pipeline is connected with a second valve body in parallel, and the second valve body is arranged between the first outlet end of the four-way valve and the gas-liquid separator.
Optionally, the first valve body, the second valve body, the first throttling device and the second throttling device are all electrically connected with a controller of the air conditioner.
Optionally, in the defrosting mode, the first heat exchanger and the second heat exchanger are both condensers.
Optionally, in the heating mode, the first heat exchanger is an evaporator, and the second heat exchanger is a condenser.
Optionally, in the refrigeration mode, the first heat exchanger is a condenser, and the second heat exchanger is an evaporator.
The control method for any air conditioner provided by the invention realizes the switching among the refrigerating mode, the heating mode and the defrosting mode of the air conditioner by controlling the switching of the refrigerant flow path.
Optionally, in the refrigeration mode, the first valve body and the second throttling device are closed, the first throttling device and the second valve body are opened, and the refrigerant passing through the first heat exchanger enters the second heat exchanger through the first throttling device and then enters the evaporator through the four-way valve and the second pipeline.
Optionally, in the heating mode, the first valve body and the second throttling device are closed, the first throttling device and the second valve body are opened, and the refrigerant passing through the second heat exchanger enters the first heat exchanger through the first throttling device and then enters the evaporator through the four-way valve and the second pipeline.
Optionally, in the defrosting mode, the first throttling device and the second valve body are closed, the first valve body and the second throttling device are opened, and the refrigerant passing through the second heat exchanger enters the first heat exchanger through the first pipeline and then enters the evaporator through the four-way valve and the second valve body.
According to the air conditioner provided by the invention, the evaporator is added, when the defrosting mode is operated, the gas-liquid two-phase refrigerant is evaporated into the gas refrigerant, and then the gas-liquid is separated through the gas-liquid separator, so that the liquid impact damage of the compressor is avoided, and the reliability of the unit is greatly improved; and in the refrigerating mode and the heating mode, an evaporator is added, then the evaporating temperature is increased, and the unit capacity is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a prior art air conditioner;
FIG. 2 is a schematic view of an air conditioner according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a refrigerant flow circuit of the air conditioner of FIG. 2 in a defrost mode, wherein arrows indicate the flow direction of the refrigerant;
FIG. 4 is a schematic diagram of a refrigerant flow circuit of the air conditioner of FIG. 2 in a cooling mode, wherein arrows indicate the flow direction of the refrigerant;
FIG. 5 is a schematic diagram of a refrigerant flow circuit of the air conditioner of FIG. 2 in a heating mode, wherein arrows in the diagram indicate the flow direction of the refrigerant;
fig. 6 is a comparison diagram of the air conditioner of the present invention with respect to the conventional air conditioner in terms of improvement of refrigerating capacity.
10' In fig. 1, a first line; 12', a first throttle device; 14', an outdoor heat exchanger; 16', an indoor heat exchanger; 18', a compressor; 20', a four-way valve; 22', a second line; 24', a gas-liquid separator; 26', a second throttling means; 28', a first valve body; 30', a second valve body; 32', a third line; 34', a third valve body;
1 in fig. 2-4, a compressor; 2.a four-way valve; 3. a first heat exchanger; 4. a first valve body; 5. a first throttle device; 6. a second heat exchanger; 7. a gas-liquid separator; 8. a second valve body; 9. a second throttle device; 10. an evaporator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
As shown in fig. 2, the invention provides an air conditioner, which comprises a first heat exchanger 3, a second heat exchanger 6, a first pipeline and a second pipeline, wherein two ends of the first pipeline are respectively connected with two ends of a first throttling device 5, the second pipeline is connected in parallel between a first outlet end of a four-way valve 2 and a gas-liquid separator 7, a second throttling device 9 is arranged on the second pipeline, and an evaporator 10 is connected in series between an outlet end of the second pipeline and the gas-liquid separator 7.
An evaporator 10 is added, when the defrosting mode is operated, the gas-liquid two-phase refrigerant is evaporated into a gas refrigerant, and then the gas refrigerant is separated into gas and liquid after passing through a gas-liquid separator 7, so that the liquid impact damage of the compressor 1 is avoided, and the reliability of a unit is greatly improved; and in the refrigerating mode and the heating mode, the evaporation temperature is increased after one evaporator 10 is added, and the unit capacity is improved.
As an alternative embodiment, the first pipe is provided with a first valve body 4.
The first valve body 4 is further arranged on the first pipeline, the first valve body 4 is closed when the air conditioner is used for normal refrigeration or normal heating, and is opened when the air conditioner enters a defrosting mode, so that the refrigerant can be throttled through the first throttling device 5 when the air conditioner is in a non-defrosting mode, the refrigerant is prevented from generating a situation of flow path errors when the air conditioner is in the defrosting mode and the non-defrosting mode, and the normal operation of the air conditioner is ensured.
As an alternative embodiment, the second pipeline is connected in parallel with a second valve body 8, and the second valve body 8 is arranged between the first outlet end of the four-way valve 2 and the gas-liquid separator 7.
In the non-defrosting mode such as refrigeration mode and heating mode, the pipeline of refrigerant operation sets up second valve body 8 on this pipeline, guarantees that when the air conditioner is in the non-defrosting mode such as refrigeration mode or heating mode, this second valve body 8 is open state, and refrigerant enters into gas-liquid separator 7 by this pipeline, and in defrosting mode, second valve body 8 closes, and the refrigerant must be for first entering into gas-liquid separator 7 through second throttling arrangement 9 for the refrigerant can not take place the circumstances of flow path mistake when defrosting mode and non-defrosting mode, has guaranteed the normal operating of air conditioner.
As an alternative embodiment, the first valve body 4, the second valve body 8, the first throttling device 5 and the second throttling device 9 are all electrically connected with the controller of the air conditioner.
The controller of the air conditioner controls the first valve body 4, the second valve body 8, the first throttling device 5 and the second throttling device 9, so that the air conditioner is ensured to smoothly realize switching of various modes, and the reliable operation of the air conditioner is ensured.
As an alternative embodiment, in defrost mode, both the first heat exchanger 3 and the second heat exchanger 6 are condensers.
As an alternative embodiment, in the heating mode, the first heat exchanger 3 is an evaporator and the second heat exchanger 6 is a condenser.
As an alternative embodiment, in the cooling mode, the first heat exchanger 3 is a condenser and the second heat exchanger 6 is an evaporator.
The invention provides a control method for any air conditioner, which realizes the switching among a refrigerating mode, a heating mode and a defrosting mode of the air conditioner by controlling the switching of a refrigerant flow path.
A complete and reliable loop can be formed no matter the refrigerating mode and the heating mode are the defrosting mode.
As an alternative embodiment, in the refrigeration mode, the first valve body 4 and the second throttling device 9 are closed, the first throttling device 5 and the second valve body 8 are opened, and the refrigerant passing through the first heat exchanger 3 passes through the first throttling device 5 to enter the second heat exchanger 6, and then passes through the four-way valve 2 and the second pipeline to enter the evaporator 10.
As shown in fig. 4, the refrigeration circuit: the high-temperature and high-pressure gas refrigerant passing through the compressor 1 flows through the first heat exchanger 3, so that the high-temperature and high-pressure gas cold coal is condensed into high-pressure liquid for condensation, then the high-temperature and high-pressure gas cold coal is throttled into a gas-liquid two-phase refrigerant by the first throttling device 5 (the first valve body 4 is closed), the gas-liquid two-phase refrigerant is evaporated into low-temperature and low-pressure gas by the second heat exchanger 6 and the evaporator 10 (the second throttling device 9 is closed at the moment and the second valve body 8 is opened), and the low-temperature and low-pressure gas enters the compressor 1 for compression after passing through the gas-liquid separator 7.
As an alternative embodiment, in the heating mode, the first valve body 4 and the second throttling device 9 are closed, the first throttling device 5 and the second valve body 8 are opened, and the refrigerant passing through the second heat exchanger 6 enters the first heat exchanger 3 through the first throttling device 5 and then enters the evaporator 10 through the four-way valve 2 and the second pipeline.
As shown in fig. 5, the heating circuit: the high-temperature high-pressure gas refrigerant from the compressor 1 flows through the first heat exchanger 3, is condensed into a high-pressure liquid refrigerant, is throttled into a gas-liquid two-phase refrigerant by the first throttling device 5 (the first valve body 4 is closed), is evaporated into low-temperature low-pressure gas by the first heat exchanger 3 and the evaporator 10 (the second throttling device 9 is closed at the moment and the second valve body 8 is opened), and is separated by the gas-liquid separator 7 and then enters the compressor 1 for compression.
As an alternative embodiment, in the defrosting mode, the first throttle device 5 and the second valve body 8 are closed, the first valve body 4 and the second throttle device 9 are opened, and the refrigerant passing through the second heat exchanger 6 enters the first heat exchanger 3 through the first pipeline, and then enters the evaporator 10 through the four-way valve 2 and the second valve body 8.
As shown in fig. 3, the defrost circuit: the high-temperature high-pressure gas refrigerant from the compressor 1 flows through the second heat exchanger 6 to be condensed into a high-pressure liquid refrigerant, and the high-pressure liquid refrigerant passes through the first valve body 4 (without passing through the first throttling device 5) to exchange heat with the first heat exchanger 3 serving as a condenser (serving as an evaporator in heating) at the moment, so that frost on the first heat exchanger 3 is removed, and the refrigerant at the moment is condensed into a low-temperature liquid state after passing through the condensation of the first heat exchanger 3 and the condensation of the second heat exchanger 6, namely, twice condensation. At this time, the refrigerant is throttled into a low-pressure refrigerant with two phases of gas and liquid by a second throttling device 9 (the second valve body 8 is closed), the low-temperature low-pressure refrigerant is evaporated into a low-pressure gas refrigerant by an evaporator 10, and the low-pressure gas refrigerant enters the compressor 1 for compression after gas-liquid separation.
As shown in FIG. 6, the throttled gas-liquid two-phase refrigerant is changed into a low-temperature gas-state refrigerant after twice evaporation and heat exchange, the superheat degree of the refrigerant is improved by twice heat exchange, the refrigerating capacity is improved from 5-1 to 5-7 in the figure, 1-7 is increased, the heating capacity is improved from 4-2 to 4-8, and the heating capacity is improved by 2-8.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (5)
1. The control method of the air conditioner is characterized in that the air conditioner comprises a first heat exchanger, a second heat exchanger, a first pipeline and a second pipeline, wherein two ends of the first pipeline are respectively connected with two ends of a first throttling device, the second pipeline is connected between a first outlet end of a four-way valve and a gas-liquid separator in parallel, and a second throttling device is arranged on the second pipeline; an evaporator is connected in series between the outlet end of the second pipeline and the gas-liquid separator; a first valve body is arranged on the first pipeline; the second pipeline is connected in parallel with a second valve body, and the second valve body is arranged between the first outlet end of the four-way valve and the gas-liquid separator;
The control method realizes the switching among the refrigerating mode, the heating mode and the defrosting mode of the air conditioner by controlling the switching of the refrigerant flow path:
In the refrigeration mode, the first valve body and the second throttling device are closed, the first throttling device and the second valve body are opened, and the refrigerant passing through the first heat exchanger enters the second heat exchanger through the first throttling device and then enters the evaporator through the four-way valve and the second pipeline;
When in a heating mode, the first valve body and the second throttling device are closed, the first throttling device and the second valve body are opened, and the refrigerant passing through the second heat exchanger enters the first heat exchanger through the first throttling device and then enters the evaporator through the four-way valve and the second pipeline;
and in the defrosting mode, the first throttling device and the second valve body are closed, the first valve body and the second throttling device are opened, and the refrigerant passing through the second heat exchanger enters the first heat exchanger through the first pipeline and then enters the evaporator through the four-way valve and the second valve body.
2. The method according to claim 1, wherein the first valve body, the second valve body, the first throttling device and the second throttling device are electrically connected with a controller of the air conditioner.
3. The method of claim 1, wherein in the defrost mode, the first heat exchanger and the second heat exchanger are both condensers.
4. The method according to claim 1, wherein the first heat exchanger is an evaporator and the second heat exchanger is a condenser in the heating mode.
5. The method according to claim 1, wherein in the cooling mode, the first heat exchanger is a condenser, and the second heat exchanger is an evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811055067.XA CN109520169B (en) | 2018-09-11 | 2018-09-11 | Air conditioner and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811055067.XA CN109520169B (en) | 2018-09-11 | 2018-09-11 | Air conditioner and control method thereof |
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| Publication Number | Publication Date |
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| CN109520169A CN109520169A (en) | 2019-03-26 |
| CN109520169B true CN109520169B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811055067.XA Active CN109520169B (en) | 2018-09-11 | 2018-09-11 | Air conditioner and control method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634009A (en) * | 2013-11-14 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method for air conditioner circulation device |
| CN107940876A (en) * | 2017-11-03 | 2018-04-20 | 广东美的暖通设备有限公司 | The control method of air conditioner and air conditioner |
| CN208952458U (en) * | 2018-09-11 | 2019-06-07 | 珠海格力电器股份有限公司 | A kind of defrosting air conditioner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2013065233A1 (en) * | 2011-11-04 | 2015-04-02 | パナソニックＩｐマネジメント株式会社 | Refrigeration cycle apparatus and air conditioner equipped with the same |
| CN205137703U (en) * | 2015-11-17 | 2016-04-06 | 广东美的暖通设备有限公司 | Air -conditioner |
| CN106828015B (en) * | 2017-01-13 | 2024-01-02 | 深圳市科泰新能源车用空调技术有限公司 | Combined heat control system for automobile air conditioner and battery |
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2018
- 2018-09-11 CN CN201811055067.XA patent/CN109520169B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634009A (en) * | 2013-11-14 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method for air conditioner circulation device |
| CN107940876A (en) * | 2017-11-03 | 2018-04-20 | 广东美的暖通设备有限公司 | The control method of air conditioner and air conditioner |
| CN208952458U (en) * | 2018-09-11 | 2019-06-07 | 珠海格力电器股份有限公司 | A kind of defrosting air conditioner |
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| CN109520169A (en) | 2019-03-26 |
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