EP3734178A1 - Procédé de commande pour climatiseur - Google Patents

Procédé de commande pour climatiseur Download PDF

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Publication number
EP3734178A1
EP3734178A1 EP18895635.3A EP18895635A EP3734178A1 EP 3734178 A1 EP3734178 A1 EP 3734178A1 EP 18895635 A EP18895635 A EP 18895635A EP 3734178 A1 EP3734178 A1 EP 3734178A1
Authority
EP
European Patent Office
Prior art keywords
indoor unit
compressor
temperature
preset temperature
air conditioner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18895635.3A
Other languages
German (de)
English (en)
Other versions
EP3734178B1 (fr
EP3734178A4 (fr
Inventor
Chao AN
Chao GU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioning Electric Co Ltd
Publication of EP3734178A1 publication Critical patent/EP3734178A1/fr
Publication of EP3734178A4 publication Critical patent/EP3734178A4/fr
Application granted granted Critical
Publication of EP3734178B1 publication Critical patent/EP3734178B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24F11/43—Defrosting; Preventing freezing of indoor units
    • 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
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • F25B49/022—Compressor control 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
    • F25B2500/00—Problems to be solved
    • F25B2500/27—Problems to be solved characterised by the stop of the refrigeration cycle
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21156—Temperatures of a compressor or the drive means therefor of the motor
    • F25B2700/21157—Temperatures of a compressor or the drive means therefor of the motor at the coil or rotor
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator

Definitions

  • the present disclosure belongs to the technical field of air conditioners, and in particular relates to a control method for an air conditioner.
  • An air conditioner is an apparatus that is capable of cooling or heating an indoor environment.
  • an indoor unit may freeze due to various reasons such as low indoor and outdoor ambient temperatures, long piping connection, and lack of freon, which in turn causes undesired phenomena such as poor cooling effect, water leakage, and pipe cracks, thus seriously affecting the user experience.
  • the present disclosure provides a control method for an air conditioner, wherein the air conditioner includes a compressor and an indoor unit, and the control method includes: acquiring a coil temperature of the indoor unit; and selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit.
  • the step of "selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit” includes: operating the compressor at a decreased frequency, if the coil temperature of the indoor unit is lower than a first preset temperature.
  • the step of "selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit” further includes: maintaining the operating frequency of the compressor unchanged, if the coil temperature of the indoor unit is higher than or equal to the first preset temperature and lower than or equal to a second preset temperature, the first preset temperature being lower than the second preset temperature.
  • the step of "selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit” further includes: operating the compressor at an increased frequency, if the coil temperature of the indoor unit is higher than the second preset temperature and lower than or equal to a third preset temperature, the second preset temperature being lower than the third preset temperature.
  • control method further includes: after the compressor has been operated for a first preset duration, if the coil temperature of the indoor unit is lower than a fourth preset temperature for a second preset duration, stopping the operation of the compressor for a third preset duration.
  • control method further includes: after stopping the operation, if the coil temperature of the indoor unit becomes higher than or equal to a fifth preset temperature, resuming the operation of the compressor, the fourth preset temperature being lower than the fifth preset temperature.
  • the coil temperature of the indoor unit is acquired; that is, when the coil temperature of the indoor unit is lower than the first preset temperature, the compressor is operated at a decreased frequency; when the coil temperature of the indoor unit is higher than or equal to the first preset temperature and lower than or equal to the second preset temperature, the operating frequency of the compressor is maintained unchanged; and when the coil temperature of the indoor unit is higher than the second preset temperature and lower than or equal to the third preset temperature, the compressor is operated at an increased frequency.
  • the frequency of the compressor can be adjusted according to the coil temperature of the indoor unit in practical applications, thereby ensuring that the indoor unit does not freeze and further effectively realizing anti-freezing protection for the air conditioner during the cooling operation.
  • the present disclosure provides a control method for an air conditioner, which aims to avoid the freezing of the indoor unit of the air conditioner, and thus effectively solve the problem that the indoor unit is easy to freeze.
  • FIG. 1 is a schematic flowchart of a control method for an air conditioner of the present disclosure.
  • the present disclosure provides a control method for an air conditioner, wherein the air conditioner includes a compressor and an indoor unit, and the control method includes: acquiring a coil temperature of the indoor unit; and selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit.
  • the coil temperature of the indoor unit will also change accordingly.
  • the frequency of the compressor can be controlled differently.
  • the coil temperature of the indoor unit can be detected in real time by an indoor unit coil sensor.
  • the coil temperature of the indoor unit may also be an experimental value obtained by those skilled in the art based on experiments under specific working conditions, or an empirical value obtained from experience. That is, those skilled in the art can choose any method to obtain the coil temperature of the indoor unit according to the actual situation, as long as the operating frequency of the compressor can be adjusted according to the change of the coil temperature of the indoor unit.
  • the frequency of the compressor the compressor can be always operated within a suitable frequency range, which not only can ensure the cooling effect, but also can prevent the indoor unit of the air conditioner from freezing.
  • the step of "selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit” includes: operating the compressor at a decreased frequency, if the coil temperature of the indoor unit is lower than a first preset temperature. That is, according to the setting of the first preset temperature, an initial conclusion of operating the compressor at a decreased frequency can be given.
  • a first preset temperature e.g., a first preset temperature
  • Those skilled in the art can flexibly set the specific value of the first preset temperature in practical applications, as long as the boundary point determined by the first preset temperature can give the conclusion that the compressor needs to be operated at a decreased frequency, and the indoor unit of the air conditioner will not freeze after the adjustment of the operating frequency of the compressor.
  • the step of "selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit” further includes: maintaining the operating frequency of the compressor unchanged, if the coil temperature of the indoor unit is higher than or equal to the first preset temperature and lower than or equal to a second preset temperature, the first preset temperature being lower than the second preset temperature. Similar to the first preset temperature, those skilled in the art can flexibly set the specific value of the second preset temperature in practical applications, as long as the boundary points determined by the first preset temperature and the second preset temperature can give the conclusion that the current operating frequency of the compressor needs to be maintained unchanged, and the indoor unit of the air conditioner will not freeze.
  • the step of "selectively adjusting the frequency of the compressor according to the coil temperature of the indoor unit” further includes: operating the compressor at an increased frequency, if the coil temperature of the indoor unit is higher than the second preset temperature and lower than or equal to a third preset temperature, the second preset temperature being lower than the third preset temperature. Similar to the first preset temperature and the second preset temperature, those skilled in the art can flexibly set the specific value of the third preset temperature in practical applications, as long as the boundary point determined by the third preset temperature can give the conclusion that the compressor needs to be operated at an increased frequency, and the indoor unit of the air conditioner will not freeze after the adjustment of the operating frequency of the compressor.
  • the coil temperature of the indoor unit can be divided into different temperature intervals, and the compressor can be adjusted accordingly within each temperature interval and the compressor can be operated at the most suitable frequency. This method is more advantageous for the adjustment of the compressor frequency.
  • a situation that the operating frequency of the compressor is too high or too low can be effectively avoided, thereby preventing the indoor unit of the air conditioner from freezing.
  • the temperature intervals divided according to the first preset temperature, the second preset temperature and the third preset temperature may be further divided.
  • the temperature interval between the first preset temperature and the second preset temperature may be re-divided into multiple temperature sub-intervals, and different adjustment strategies for the compressor frequency are set within the temperature sub-intervals.
  • Those skilled in the art may set the same or different ways of adjusting the compressor frequency according to different temperature intervals in practical applications, so that the air conditioner can be operated stably in different environments and the indoor unit can be effectively prevented from freezing.
  • the compressor frequency when controlling the compressor frequency to increase/decrease, the compressor frequency may be controlled to increase/decrease slowly, or the compressor frequency may be controlled to increase/decrease fast.
  • those skilled in the art may flexibly set the adjustment speed of increasing/decreasing the compressor frequency, as long as the speed setting enables the compressor frequency to smoothly increase/decrease.
  • the fourth preset temperature may be set to be lower than the above first preset temperature.
  • the fourth preset temperature may be an experimental temperature value obtained by those skilled in the art based on experiments under specific working conditions, or may be an empirical temperature value obtained from experience.
  • the first preset duration, the second preset duration and the third preset duration can be flexibly adjusted and set according to actual conditions, as long as the boundary points determined by the above-mentioned first preset duration, the second preset duration, and the third preset duration can optimize the anti-freezing function of the air conditioner.
  • control method further includes: after stopping the operation of the compressor, if the coil temperature of the indoor unit becomes higher than or equal to a fifth preset temperature, resuming the operation of the compressor, the fourth preset temperature being lower than the fifth preset temperature. That is, after the operation of the compressor has been stopped for the third preset duration, if the coil temperature of the indoor unit rises to or above the fifth preset temperature, the operation of the compressor needs to be resumed.
  • the fifth preset temperature may be set to be equal to the above-mentioned third preset temperature. Of course, this is not limiting, and the fifth preset temperature may also be other temperature values.
  • those skilled in the art may flexibly set the specific temperature value of the fifth preset temperature, as long as the boundary point determined by the fifth preset temperature can give the conclusion that the operation of the compressor needs to be resumed, and the operating mode of the compressor and the anti-freezing function of the air conditioner can be optimized.
  • the above control method includes the following steps s1 to s4.
  • steps s1 and s2 may be executed sequentially or simultaneously.
  • steps s1 and s2 may be executed sequentially or simultaneously.
  • steps s1 and s2 may be executed sequentially or simultaneously.
  • the coil temperature TM of the indoor unit is detected by the indoor unit coil temperature sensor disposed on the air conditioner.
  • the first preset temperature is set to 6°C
  • the second preset temperature is set to 8°C
  • the third preset temperature is set to 10°C.
  • the operating frequency of the compressor is adjusted by judging the temperature interval of the indoor unit coil temperature TM. If TM ⁇ 6°C, the frequency of the compressor is decreased at a constant rate of 1Hz/10s; if 6°C ⁇ TM ⁇ 8°C, the frequency of the compressor is maintained unchanged; and if 8°C ⁇ TM ⁇ 10°C, the frequency of the compressor is increased at a constant rate of 1Hz/10s.
  • the operation duration thereof is recorded. After the compressor has been operated for 6 minutes, if TM ⁇ 2°C for 10 seconds, the operation of the compressor is stopped for a minimum duration of 5 minutes and a maximum duration of 9 minutes; when TM rises above 10°C, the normal operation of the compressor is resumed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)
EP18895635.3A 2017-12-25 2018-10-18 Procédé de commande pour climatiseur Active EP3734178B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711425104.7A CN108224704A (zh) 2017-12-25 2017-12-25 空调的控制方法
PCT/CN2018/110793 WO2019128397A1 (fr) 2017-12-25 2018-10-18 Procédé de commande pour climatiseur

Publications (3)

Publication Number Publication Date
EP3734178A1 true EP3734178A1 (fr) 2020-11-04
EP3734178A4 EP3734178A4 (fr) 2021-05-05
EP3734178B1 EP3734178B1 (fr) 2024-04-10

Family

ID=62648681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18895635.3A Active EP3734178B1 (fr) 2017-12-25 2018-10-18 Procédé de commande pour climatiseur

Country Status (4)

Country Link
US (1) US20210071924A1 (fr)
EP (1) EP3734178B1 (fr)
CN (1) CN108224704A (fr)
WO (1) WO2019128397A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108224704A (zh) * 2017-12-25 2018-06-29 青岛海尔空调电子有限公司 空调的控制方法
CN109210696B (zh) * 2018-09-10 2020-11-03 青岛海尔空调器有限总公司 一种空调防冻结保护的控制方法
CN110567127A (zh) * 2019-09-23 2019-12-13 宁波奥克斯电气股份有限公司 一种空调频率控制方法和空调器
CN112577155B (zh) * 2019-09-27 2022-12-16 广东美的制冷设备有限公司 空调器的控制方法、空调器及计算机可读存储介质
CN110736234A (zh) * 2019-10-11 2020-01-31 青岛海尔空调器有限总公司 空调控制的方法及装置、空调
CN110686361A (zh) * 2019-10-15 2020-01-14 广东美的暖通设备有限公司 新风机控制方法、新风机及计算机可读存储介质
CN111397101B (zh) * 2020-03-16 2021-10-29 珠海格力电器股份有限公司 一种空调控制方法、装置、存储介质及空调
CN113446670A (zh) * 2020-03-26 2021-09-28 青岛海尔空调电子有限公司 压缩机运行频率的控制方法
CN111426041B (zh) * 2020-04-13 2022-08-19 青岛海尔空调电子有限公司 一种变频空调压缩机频率快速稳定方法、系统及空调装置
CN111536022B (zh) * 2020-04-25 2022-07-22 壹格建筑科技(上海)有限公司 压缩机防冻保护的控制方法、装置和计算机可读存储介质
CN111964234B (zh) * 2020-07-30 2021-06-29 青岛海尔空调器有限总公司 用于空调压缩机控制的方法、装置及空调
CN112628939A (zh) * 2020-12-12 2021-04-09 安徽美博智能科技有限公司 一种共享空调防冻结保护控制方法及空调器
CN113068546A (zh) * 2021-03-31 2021-07-06 广东积微科技有限公司 一种用于大棚低温制冷的空调器控制方法
CN113932376B (zh) * 2021-09-30 2023-01-20 珠海格力电器股份有限公司 温度调节机组控制方法、装置及温度调节机组设备
CN113970168B (zh) * 2021-10-20 2022-11-15 珠海格力电器股份有限公司 压缩机控制方法、装置、电子设备以及可读存储介质

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JP3348758B2 (ja) * 1995-06-14 2002-11-20 株式会社富士通ゼネラル 空気調和機の制御方法
KR101253568B1 (ko) * 2005-12-29 2013-04-11 삼성전자주식회사 공기조화기 및 그 제어방법
JP2012057869A (ja) * 2010-09-09 2012-03-22 Panasonic Corp 空気調和機
CN103115417B (zh) * 2013-03-19 2015-04-01 海尔集团公司 低温环境空调器的制冷方法
CN104566645B (zh) * 2014-12-08 2018-06-05 广东美的制冷设备有限公司 一拖多空调器、空调防冻保护方法和空调防冻保护系统
CN104596036B (zh) * 2015-01-12 2017-12-12 广东美的制冷设备有限公司 防冻结控制方法和装置
CN104697118B (zh) * 2015-03-11 2018-06-05 广东美的制冷设备有限公司 空调器的调节方法、空调器的调节装置和空调器
CN105157172B (zh) * 2015-08-31 2018-03-30 Tcl空调器(中山)有限公司 空调器的控制方法及装置
CN108224704A (zh) * 2017-12-25 2018-06-29 青岛海尔空调电子有限公司 空调的控制方法

Also Published As

Publication number Publication date
WO2019128397A1 (fr) 2019-07-04
EP3734178B1 (fr) 2024-04-10
EP3734178A4 (fr) 2021-05-05
US20210071924A1 (en) 2021-03-11
CN108224704A (zh) 2018-06-29

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