CN110160291B - Defrosting control scheme for low-temperature heating machine - Google Patents
Defrosting control scheme for low-temperature heating machine Download PDFInfo
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- CN110160291B CN110160291B CN201810118924.XA CN201810118924A CN110160291B CN 110160291 B CN110160291 B CN 110160291B CN 201810118924 A CN201810118924 A CN 201810118924A CN 110160291 B CN110160291 B CN 110160291B
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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
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a defrosting control scheme of a low-temperature heating machine, which cannot solve the problem that frost is not removed or frost is not removed, so that a unit cannot effectively defrost or defrost completely in time. The invention is different from the traditional defrosting mode, judges whether the unit needs to be defrosted or not by detecting different parameter values at different low environmental temperatures, can timely judge whether the unit needs to be defrosted or not, solves the problems of no defrosting or no defrosting, and can improve the stability and heat exchange quantity of the unit, reduce the frosting rate at low temperature and improve the defrosting rate.
Description
Technical Field
The invention relates to a defrosting control scheme of a low-temperature heating machine.
Background
The problem of defrosting in an air conditioning system at low ambient temperature (7 ℃ to-25 ℃) is a problem which needs to be overcome by air conditioner designers. The problem of how to solve the wrong defrosting in the air conditioner operation, that is to say, the defrosting is not removed when there is frost, and there is no frost is a way to realize the air conditioning energy.
At present, the defrosting control modes in the market are any two of the following modes:
firstly, defrosting regularly: at a certain environmental temperature, the unit defrosts at intervals;
secondly, when the temperature of the outdoor coil pipe is lower than a certain set temperature, defrosting is carried out after a period of time;
the two modes can not solve the problem that the frost is not removed or is not defrosted, so that the unit can not effectively defrost in time or defrost cleanly.
Disclosure of Invention
In order to solve the above problems, the object of the present invention is achieved by: a defrosting control scheme for a low-temperature heating machine is characterized by comprising the following steps:
outdoor ambient temperature, outdoor pipeline temperature, fin temperature and coil pipe temperature are read out through detecting under the low ambient temperature condition, thereby select different defrosting schemes according to the temperature value that detects out above-mentioned, the defrosting scheme divide into three: first defrosting, conventional defrosting and special defrosting.
Further, the first defrosting, the conventional defrosting and the special defrosting all have an entering state and an exiting state.
Further, the entering of first defrosting needs to meet any condition as follows:
the first condition is that the ambient temperature is lower than or equal to the outdoor ambient temperature allowed to be defrosted by the first defrosting function set by the system;
the second condition is that the compressor has at least seven minutes of operation time;
and the third condition is that the temperature of the fins is less than or equal to the temperature of the outdoor pipeline.
Further, the exiting first defrosting needs to meet any condition as follows:
the first condition is that the time of the defrosting operation process is more than or equal to the defrosting time set by the system;
and the second condition is that the temperature of the fins is higher than or equal to the temperature of the outdoor pipeline when the defrosting is finished.
Further, the entering of the conventional defrosting needs to simultaneously meet any condition as follows:
the first condition is that the outdoor pipeline temperature and the outdoor environment temperature are detected under the running state of the press, and the outdoor pipeline temperature and the outdoor environment temperature need to simultaneously meet the temperature conditions of any table below for one minute continuously;
| outdoor environment temperature of less than or equal to 15 DEG C | The temperature of the outdoor pipeline is less than or equal to minus 1 DEG C |
| The outdoor environment temperature is more than or equal to 5 ℃ and less than 15 DEG C | The temperature of the outdoor pipeline is less than or equal to-2 DEG C |
| The outdoor environment temperature is more than or equal to 0 ℃ and less than 5 DEG C | The temperature of the outdoor pipeline is less than or equal to-6 DEG C |
| The outdoor environment temperature is more than or equal to minus 5 ℃ and less than 0 DEG C | The temperature of the outdoor pipeline is less than or equal to minus 10 DEG C |
| The outdoor environment temperature is less than-5 ℃ and is not more than-10 DEG C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 4℃) |
| The outdoor environment temperature is less than-10 ℃ and is less than or equal to-15 DEG C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 3℃) |
| The outdoor environment temperature is less than-15 ℃ and is not more than-20 DEG C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 2℃) |
| The outdoor environment temperature is less than-20 ℃ and is not more than-25 DEG C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 2℃) |
| Outdoor environment temperature is lower than-25 deg.C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 2℃) |
The second condition is that the accumulated heating time reaches forty-five minutes;
the third condition is that the outdoor pipeline temperature is lower than the coil temperature when the defrosting is quitted;
condition four is ten minutes after the compressor was operated.
Further, the conventional defrosting can be quitted only by meeting any one of the following conditions:
the first condition is that the outdoor unit has a shutdown fault;
the second condition is that the defrosting operation process time reaches the defrosting time set by the system;
the third condition is that the temperature of the outdoor pipe is higher than or equal to the temperature for quitting defrosting;
and the fourth condition is that the outlet water temperature of the outdoor pipeline is less than or equal to 4 ℃.
And after the normal defrosting is finished, the electronic expansion valve is restored to the opening degree of +30 steps before defrosting, and the electronic expansion valve is not adjusted within three minutes.
Further, the entering of the special defrosting needs to meet any condition as follows:
the first condition is that the accumulated frost accumulation running time of the unit is more than or equal to the time of the defrosting interval;
the second condition is that the outdoor environment temperature is less than or equal to the outdoor environment temperature allowed to be defrosted by the special defrosting function set by the system;
the third condition is that the difference value of the outdoor environment temperature minus the fin temperature is more than or equal to the difference value of the outdoor environment temperature minus the outdoor pipeline temperature;
further, the special defrosting can be quitted only by meeting any one of the following conditions:
the first condition is that the defrosting operation process time reaches the set defrosting time of the system;
and the second condition is that the temperature of the fins is more than or equal to the outdoor environment temperature after the special defrosting is finished.
The invention has any beneficial effects as follows:
(1) the invention is different from the traditional defrosting mode, judges whether the unit needs to be defrosted or not by detecting different parameter values at different low environmental temperatures, can timely judge whether the unit defrosts in time and solves the problem of defrosting whether frost exists or not.
(2) The invention comprises three defrosting conditions, so that the unit can be suitable for timing defrosting under different meteorological conditions.
(3) According to the invention, the temperature of the component is detected, so that the product can be defrosted in time when frosted, the stability of the unit is improved, the heating capacity of the unit at low temperature is improved, the frosting rate of the unit is reduced, and the defrosting rate of the unit is improved; the high-voltage protection failure rate of the unit and the attenuation rate of the unit capacity at low temperature are greatly reduced, so that the unit can stably and normally produce heat.
Drawings
The invention is further described with reference to the following figures and specific examples.
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, the present embodiment adopts any of the following technical solutions: the utility model provides a low temperature heating machine defrosting control scheme which characterized in that includes and reads out outdoor ambient temperature, outdoor pipeline temperature, fin temperature and coil pipe temperature through detecting under the low ambient temperature condition, thereby selects different defrosting schemes according to the temperature value that the aforesaid detected out, and defrosting scheme divide into three: first defrosting, conventional defrosting and special defrosting.
Wherein, the first defrosting, the conventional defrosting and the special defrosting all have an entering state and an exiting state.
Wherein, the first defrosting needs to meet any condition as follows:
the first condition is that the ambient temperature is lower than or equal to the outdoor ambient temperature allowed to be defrosted by the first defrosting function set by the system;
the second condition is that the compressor has at least seven minutes of operation time;
and the third condition is that the temperature of the fins is less than or equal to the temperature of the outdoor pipeline.
Wherein, the first defrosting quit needs to meet any condition as follows:
the first condition is that the time of the defrosting operation process is more than or equal to the defrosting time set by the system;
and the second condition is that the temperature of the fins is higher than or equal to the temperature of the outdoor pipeline when the defrosting is finished.
Wherein, the conventional defrosting needs to meet any condition of the following conditions at the same time:
the first condition is that the outdoor pipeline temperature and the outdoor environment temperature are detected under the running state of the press, and the outdoor pipeline temperature and the outdoor environment temperature need to simultaneously meet the temperature conditions of any table below for one minute continuously;
| outdoor environment temperature of less than or equal to 15 DEG C | The temperature of the outdoor pipeline is less than or equal to minus 1 DEG C |
| The outdoor environment temperature is more than or equal to 5 ℃ and less than 15 DEG C | The temperature of the outdoor pipeline is less than or equal to-2 DEG C |
| The outdoor environment temperature is more than or equal to 0 ℃ and less than 5 DEG C | The temperature of the outdoor pipeline is less than or equal to-6 DEG C |
| The outdoor environment temperature is more than or equal to minus 5 ℃ and less than 0 DEG C | The temperature of the outdoor pipeline is less than or equal to minus 10 DEG C |
| The outdoor environment temperature is less than-5 ℃ and is not more than-10 DEG C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 4℃) |
| The outdoor environment temperature is less than-10 ℃ and is less than or equal to-15 DEG C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 3℃) |
| The outdoor environment temperature is less than-15 ℃ and is not more than-20 DEG C | The temperature of the outdoor pipeline is less than or equal to (outdoor environment)Temperature-2) deg.C |
| The outdoor environment temperature is less than-20 ℃ and is not more than-25 DEG C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 2℃) |
| Outdoor environment temperature is lower than-25 deg.C | The temperature of the outdoor pipeline is less than or equal to (the outdoor environment temperature is minus 2℃) |
The second condition is that the accumulated heating time reaches forty-five minutes;
the third condition is that the outdoor pipeline temperature is lower than the coil temperature when the defrosting is quitted;
condition four is ten minutes after the compressor was operated.
Wherein, the conventional defrosting can be quitted only by meeting any one of the following conditions:
the first condition is that the outdoor unit has a shutdown fault;
the second condition is that the defrosting operation process time reaches the defrosting time set by the system;
the third condition is that the temperature of the outdoor pipe is higher than or equal to the temperature for quitting defrosting;
and the fourth condition is that the outlet water temperature of the outdoor pipeline is less than or equal to 4 ℃.
And after the normal defrosting is finished, the electronic expansion valve is restored to the opening degree of +30 steps before defrosting, and the electronic expansion valve is not adjusted within three minutes.
Wherein, the entering of the special defrosting needs to meet any condition as follows:
the first condition is that the accumulated frost accumulation running time of the unit is more than or equal to the time of the defrosting interval;
the second condition is that the outdoor environment temperature is less than or equal to the outdoor environment temperature allowed to be defrosted by the special defrosting function set by the system;
the third condition is that the difference value of the outdoor environment temperature minus the fin temperature is more than or equal to the difference value of the outdoor environment temperature minus the outdoor pipeline temperature;
wherein, special defrosting can be quitted only by meeting any one of the following conditions:
the first condition is that the defrosting operation process time reaches the set defrosting time of the system;
and the second condition is that the temperature of the fins is more than or equal to the outdoor environment temperature after the special defrosting is finished.
Example referring to fig. 1, a defrost control scheme for a low temperature heater. The invention is different from the traditional defrosting mode, judges whether the unit needs to be defrosted or not by detecting different parameter values at different low environmental temperatures, and is provided with three defrosting schemes, namely primary defrosting, conventional defrosting and special defrosting.
The first defrosting is set to solve the problem that the unit is started to operate for the first time, and the unit is guaranteed to defrost in time due to frosting in rainy and snowy weather.
The conventional defrosting setting is to solve the problem that the unit can defrost in time under the normal operation state, firstly, the defrosting condition of the unit is judged according to different outdoor tube temperatures under different outdoor environment temperatures, and the frostless defrosting is accurately reduced.
The special defrosting setting is to solve the problem that the unit is easy to frost under the condition of low ambient temperature and high humidity or haze weather, and if the unit cannot be defrosted in time, the low-voltage fault of the unit can be easily triggered.
All three defrost scenarios have an enter and exit state, each of which needs to be triggered by the satisfaction of a condition. The implementation of the scheme can improve the stability and the heat exchange quantity of the unit, reduce the frosting rate at low temperature and improve the defrosting rate.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification only to illustrate the principle of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A defrosting control scheme for a low-temperature heating machine is characterized by comprising the following steps:
the outdoor environment temperature, the outdoor pipeline temperature, the fin temperature and the coil pipe temperature are detected and read under the condition of low environment temperature, different defrosting schemes are selected according to the detected temperature values, and the defrosting schemes are divided into three types, namely primary defrosting, conventional defrosting and special defrosting;
the three schemes of the first defrosting, the conventional defrosting and the special defrosting all have an entering state and an exiting state;
the first defrosting needs to meet any condition as follows:
the first condition is that the environmental temperature is lower than or equal to the first defrosting function set by the system and allows the outdoor environmental temperature to be defrosted, the second condition is that the running time of the compressor is at least seven minutes, and the third condition is that the temperature of the fins is lower than or equal to the temperature of the outdoor pipeline;
the entering of the conventional defrosting only needs to meet any condition as follows:
the first condition is that the outdoor pipeline temperature and the outdoor environment temperature are detected under the running state of the press, the outdoor pipeline temperature and the outdoor environment temperature need to simultaneously meet the temperature conditions of any table below for one minute continuously,
The second condition is that the accumulated heating time reaches forty-five minutes, the third condition is that the outdoor pipeline temperature is lower than the coil temperature when the defrosting is quitted, and the fourth condition is that the compressor runs for ten minutes;
the entering of the special defrosting needs to meet any condition as follows:
the first condition is that the accumulated frost accumulation running time of the unit is more than or equal to the time of defrosting intervals, the second condition is that the outdoor environment temperature is less than or equal to the time of setting a special defrosting function by the system to allow the outdoor environment temperature to be defrosted, and the third condition is that the difference value of the outdoor environment temperature minus the fin temperature is more than or equal to the difference value of the outdoor environment temperature minus the outdoor pipeline temperature.
2. The defrosting control scheme for the low-temperature heating machine according to claim 1, wherein the condition for exiting first defrosting is that any of the following conditions are met:
the first condition is that the time of the defrosting operation process is more than or equal to the defrosting time set by the system;
and the second condition is that the temperature of the fins is higher than or equal to the temperature of the outdoor pipeline when the defrosting is finished.
3. The defrosting control scheme of the low-temperature heating machine according to the claim 1, characterized in that the normal defrosting state is exited only by satisfying any one of the following conditions:
the first condition is that the outdoor unit has a shutdown fault;
the second condition is that the defrosting operation process time reaches the defrosting time set by the system;
the third condition is that the temperature of the outdoor pipe is higher than or equal to the temperature for quitting defrosting;
the fourth condition is that the outlet water temperature of the outdoor pipeline is less than or equal to 4 ℃;
after the normal defrosting is finished, the electronic expansion valve is restored to the opening degree before defrosting, the step is added by 30, and the electronic expansion valve is not adjusted within three minutes.
4. The defrosting control scheme of the low-temperature heating machine according to claim 1, wherein the special defrosting state is exited only by satisfying any one of the following conditions:
the first condition is that the defrosting operation process time reaches the set defrosting time of the system;
and the second condition is that the temperature of the fins is more than or equal to the outdoor environment temperature after the special defrosting is finished.
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| CN201810118924.XA CN110160291B (en) | 2018-02-06 | 2018-02-06 | Defrosting control scheme for low-temperature heating machine |
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| CN201810118924.XA CN110160291B (en) | 2018-02-06 | 2018-02-06 | Defrosting control scheme for low-temperature heating machine |
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| CN110848883A (en) * | 2019-11-27 | 2020-02-28 | 无锡同方人工环境有限公司 | Control method, control device and control system for defrosting of air conditioner |
| CN111023453A (en) * | 2019-12-25 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device, air conditioner and storage medium |
| CN111765665B (en) * | 2020-06-17 | 2021-08-03 | 珠海格力电器股份有限公司 | Automatic and accurate defrosting control method and device and heat pump water heater |
| CN113465127A (en) * | 2021-06-22 | 2021-10-01 | 青岛海尔空调电子有限公司 | Anti-frosting control method of air conditioner and air conditioner |
| CN114739064B (en) * | 2022-03-23 | 2024-03-15 | 浙江中广电器集团股份有限公司 | Defrosting mode for preventing sheet metal around fan from icing |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142137A (en) * | 1983-12-28 | 1985-07-27 | Matsushita Electric Ind Co Ltd | Defrosting control device of air conditioner |
| JPS62294837A (en) * | 1986-06-13 | 1987-12-22 | Daikin Ind Ltd | Heat pump type air conditioner |
| JPH037839A (en) * | 1989-06-02 | 1991-01-16 | Mitsubishi Electric Corp | Air conditioner |
| JPH06174345A (en) * | 1992-12-07 | 1994-06-24 | Sanden Corp | Defrosting device for outdoor heat exchanger for heat pump type air conditioner |
| JPH112477A (en) * | 1997-06-11 | 1999-01-06 | Sanyo Electric Co Ltd | Cooling storage cabinet |
| CN101067504A (en) * | 2007-06-06 | 2007-11-07 | 中国扬子集团滁州扬子空调器有限公司 | Strong heat air conditioner and defrosting method thereof |
| CN201335580Y (en) * | 2008-11-26 | 2009-10-28 | 中国人民解放军总后勤部建筑工程研究所 | Current sampling defrosting circuit structure for condenser fan |
| JP2010210223A (en) * | 2009-03-12 | 2010-09-24 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| CN102679645A (en) * | 2012-04-24 | 2012-09-19 | 美的集团有限公司 | Defrosting method for heat pump |
| CN104061651A (en) * | 2013-03-20 | 2014-09-24 | 珠海格力电器股份有限公司 | Multi-split air conditioner, multi-split defrosting control system and multi-split defrosting control method |
| CN104567148A (en) * | 2014-12-23 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioner defrosting method and device |
| CN104633871A (en) * | 2013-11-14 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method of air conditioning system |
| CN104634009A (en) * | 2013-11-14 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method of air conditioner circulating device |
| CN104654685A (en) * | 2013-11-19 | 2015-05-27 | 美的集团股份有限公司 | Defrosting control method and device for heat pump system |
| CN105387560A (en) * | 2015-10-30 | 2016-03-09 | 株洲麦格米特电气有限责任公司 | Intelligent defrosting method for direct current frequency conversion air conditioner |
| CN205090517U (en) * | 2015-10-16 | 2016-03-16 | 珠海格力电器股份有限公司 | Air conditioner and water heater integrated machine |
| CN105588254A (en) * | 2014-10-24 | 2016-05-18 | 青岛海尔空调器有限总公司 | Control method and system for preventing false defrosting of air conditioner |
| CN106152381A (en) * | 2015-03-31 | 2016-11-23 | Tcl空调器(中山)有限公司 | Air-conditioner and the defrosting control method of air-conditioner |
| CN106322648A (en) * | 2016-08-18 | 2017-01-11 | 深圳市深蓝电子股份有限公司 | Self-adaption defrosting method of air-cooled heat pump unit |
| CN106440585A (en) * | 2016-08-09 | 2017-02-22 | 山东绿特新能源有限公司 | Intelligent comprehensive defrosting device for air source heat pump unit and implementation method of intelligent comprehensive defrosting device |
| JP6094566B2 (en) * | 2014-11-17 | 2017-03-15 | ダイキン工業株式会社 | Heat pump equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9964345B2 (en) * | 2013-12-26 | 2018-05-08 | Emerson Electric Co. | Heat pump controller with user-selectable defrost modes and reversing valve energizing modes |
-
2018
- 2018-02-06 CN CN201810118924.XA patent/CN110160291B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142137A (en) * | 1983-12-28 | 1985-07-27 | Matsushita Electric Ind Co Ltd | Defrosting control device of air conditioner |
| JPS62294837A (en) * | 1986-06-13 | 1987-12-22 | Daikin Ind Ltd | Heat pump type air conditioner |
| JPH037839A (en) * | 1989-06-02 | 1991-01-16 | Mitsubishi Electric Corp | Air conditioner |
| JPH06174345A (en) * | 1992-12-07 | 1994-06-24 | Sanden Corp | Defrosting device for outdoor heat exchanger for heat pump type air conditioner |
| JPH112477A (en) * | 1997-06-11 | 1999-01-06 | Sanyo Electric Co Ltd | Cooling storage cabinet |
| CN101067504A (en) * | 2007-06-06 | 2007-11-07 | 中国扬子集团滁州扬子空调器有限公司 | Strong heat air conditioner and defrosting method thereof |
| CN201335580Y (en) * | 2008-11-26 | 2009-10-28 | 中国人民解放军总后勤部建筑工程研究所 | Current sampling defrosting circuit structure for condenser fan |
| JP2010210223A (en) * | 2009-03-12 | 2010-09-24 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| CN102679645A (en) * | 2012-04-24 | 2012-09-19 | 美的集团有限公司 | Defrosting method for heat pump |
| CN104061651A (en) * | 2013-03-20 | 2014-09-24 | 珠海格力电器股份有限公司 | Multi-split air conditioner, multi-split defrosting control system and multi-split defrosting control method |
| CN104633871A (en) * | 2013-11-14 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method of air conditioning system |
| CN104634009A (en) * | 2013-11-14 | 2015-05-20 | 珠海格力电器股份有限公司 | Control method of air conditioner circulating device |
| CN104654685A (en) * | 2013-11-19 | 2015-05-27 | 美的集团股份有限公司 | Defrosting control method and device for heat pump system |
| CN105588254A (en) * | 2014-10-24 | 2016-05-18 | 青岛海尔空调器有限总公司 | Control method and system for preventing false defrosting of air conditioner |
| JP6094566B2 (en) * | 2014-11-17 | 2017-03-15 | ダイキン工業株式会社 | Heat pump equipment |
| CN104567148A (en) * | 2014-12-23 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioner defrosting method and device |
| CN106152381A (en) * | 2015-03-31 | 2016-11-23 | Tcl空调器(中山)有限公司 | Air-conditioner and the defrosting control method of air-conditioner |
| CN205090517U (en) * | 2015-10-16 | 2016-03-16 | 珠海格力电器股份有限公司 | Air conditioner and water heater integrated machine |
| CN105387560A (en) * | 2015-10-30 | 2016-03-09 | 株洲麦格米特电气有限责任公司 | Intelligent defrosting method for direct current frequency conversion air conditioner |
| CN106440585A (en) * | 2016-08-09 | 2017-02-22 | 山东绿特新能源有限公司 | Intelligent comprehensive defrosting device for air source heat pump unit and implementation method of intelligent comprehensive defrosting device |
| CN106322648A (en) * | 2016-08-18 | 2017-01-11 | 深圳市深蓝电子股份有限公司 | Self-adaption defrosting method of air-cooled heat pump unit |
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