WO2016060145A1 - Climatiseur - Google Patents

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Publication number
WO2016060145A1
WO2016060145A1 PCT/JP2015/078983 JP2015078983W WO2016060145A1 WO 2016060145 A1 WO2016060145 A1 WO 2016060145A1 JP 2015078983 W JP2015078983 W JP 2015078983W WO 2016060145 A1 WO2016060145 A1 WO 2016060145A1
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WO
WIPO (PCT)
Prior art keywords
thermo
control device
time
heat exchanger
frost
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.)
Ceased
Application number
PCT/JP2015/078983
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English (en)
Japanese (ja)
Inventor
有賀徹
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to EP15850569.3A priority Critical patent/EP3208549B1/fr
Priority to CN201580044377.XA priority patent/CN106574798B/zh
Publication of WO2016060145A1 publication Critical patent/WO2016060145A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F24F11/89—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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to an air conditioner that performs a defrosting operation when frost formation is detected in an outdoor heat exchanger during a heating operation.
  • frost forms on the outdoor heat exchanger during heating operation, which adversely affects heat exchange. Therefore, detection of frost formation on the outdoor heat exchanger is performed by detecting the temperature of the outdoor heat exchanger. When frost formation is detected, a defrosting operation is performed.
  • Patent Document 1 describes that a mask time for preventing the defrosting operation from being performed for a predetermined time from the operation of the compressor is set.
  • Defrosting operation is not performed during the mask time after the compressor is operating.
  • a thermo-off for stopping the compressor is performed, and when the room temperature decreases for a while, a thermo-on for operating the compressor is performed.
  • thermo-off and thermo-on are repeated in a short cycle, the defrosting operation is not performed because the mask time is set. Therefore, even if frost forms on the outdoor heat exchanger, the frost is not removed, the outdoor heat exchanger freezes, and heating operation cannot be performed.
  • an object of the present invention is to provide an air conditioner that can defrost an outdoor heat exchanger when thermo-off and thermo-on are repeated in a short cycle.
  • An air conditioner of the present invention includes a frost detection unit that detects frost formation on an outdoor heat exchanger during heating operation, and a control device that performs a defrost operation when frost formation is detected. Disables the detection of frost for a predetermined mask time from the start of the heating operation, and enables the detection of frost after the elapse of the mask time.
  • the control device forcibly performs the defrosting operation when the thermo-off for stopping the compressor during the heating operation and the thermo-on for operating the stopped compressor are repeatedly performed.
  • the control device performs the defrosting operation when the thermo-ON has been performed for a predetermined number of times within the specified time set to the mask time or longer. That is, when starting the thermo-off, the control device checks whether the operation time of the previous thermo-on is equal to or less than the specified time, counts when it is equal to or less than the specified time, and performs the defrosting operation when the count reaches a predetermined number of times. Do. Based on the operation time of the thermo-on, it is determined whether the thermo-off and the thermo-on are repeated in a short cycle.
  • thermo-off and the thermo-on are repeated in a short cycle, the defrosting operation is forcibly performed, so that the outdoor heat exchanger cannot be defrosted in such a situation. Can be eliminated.
  • Air conditioner control block diagram Flowchart when performing the defrosting operation of the first embodiment Flowchart when performing the defrosting operation of the second embodiment Flowchart when performing the defrosting operation of the third embodiment Flowchart when performing the defrosting operation of the fourth embodiment
  • the air conditioner of 1st Embodiment is shown in FIG.
  • the heat pump type air conditioner is configured by connecting an outdoor unit 1 and an indoor unit 2 by piping and wiring.
  • the outdoor unit 1 includes a compressor 3, a four-way valve 4, an outdoor heat exchanger 5, an expansion valve 6, and an outdoor fan 7.
  • the indoor unit 2 includes an indoor heat exchanger 8 and an indoor fan 9.
  • the compressor 3, the four-way valve 4, the outdoor heat exchanger 5, the expansion valve 6, and the indoor heat exchanger 8 are connected by piping to form a refrigerant circuit.
  • a two-way valve 10 and a three-way valve 11 are provided in the outdoor unit.
  • a two-way valve 10 is interposed in a pipe connecting the expansion valve 6 and the indoor heat exchanger 8, and a three-way valve 11 is interposed in a pipe connecting the four-way valve 4 and the indoor heat exchanger 8.
  • the refrigerant circulates through the refrigerant circuit.
  • a heating or cooling refrigeration cycle is formed.
  • the refrigerant circulates in the order of the compressor 3, the four-way valve 4, the outdoor heat exchanger 5, the expansion valve 6, and the indoor heat exchanger 8.
  • the refrigerant circulates in the order of the compressor 3, the four-way valve 4, the indoor heat exchanger 8, the expansion valve 6, and the outdoor heat exchanger 5.
  • the air conditioner includes a control device 12 that controls the refrigeration cycle and performs air conditioning operations such as cooling, heating, and dehumidification.
  • the air conditioner also includes a room temperature detector 13, an outside air temperature detector 14, an outdoor heat exchanger temperature detector 15 that detects the temperature of the outdoor heat exchanger 5, and an indoor heat exchanger that detects the temperature of the indoor heat exchanger 8.
  • a temperature detector 16 is provided. Each of the temperature detectors 13 to 16 uses a temperature sensor such as a thermistor.
  • the control device 12 controls the rotational speed (operating frequency) of the compressor 3, the opening degree of the expansion valve 6, the outdoor fan 7 according to the instructed operation mode. And the rotation speed of the indoor fan 9 are respectively controlled.
  • the control device 12 includes an indoor control unit provided in the indoor unit 2 and an outdoor control unit provided in the outdoor unit 1.
  • the indoor control unit and the outdoor control unit are connected so as to be communicable with each other, and both cooperate to control operations of the indoor unit 2 and the outdoor unit 1.
  • the outdoor control unit collectively transmits detection signals input from the plurality of temperature detectors 14 and 15 to the indoor control unit, and the indoor control unit manages the detected temperature information.
  • the outside air temperature detector 14 and the outdoor heat exchanger temperature detector 15 constitute a frost detection section.
  • the frost detection part performs a frost detection operation during the air conditioning operation.
  • the frosting detection unit detects that the outdoor heat exchanger 5 is frosted.
  • the control device 12 determines the suitability of the defrosting operation based on the output of the frost detection unit. That is, when the difference between the outside air temperature and the temperature of the outdoor heat exchanger 5 is equal to or greater than a predetermined value, the control device 12 determines that the defrosting conditions are met, and the outside air temperature and the temperature of the outdoor heat exchanger 5 When the difference is smaller than the predetermined value, it is determined that the defrosting condition is not met. When the detection result matches the defrost condition, the control device 12 performs the defrost operation. As the defrosting operation, reverse defrosting is performed. During the heating operation, the compressor is stopped and switched to the cooling operation. In addition, you may perform detection of frost formation based on the temperature of the outdoor heat exchanger 5. FIG. When the temperature of the outdoor heat exchanger 5 is equal to or lower than a specified temperature below the freezing point, it is determined that the defrosting condition is satisfied.
  • the control device 12 does not perform the defrosting operation until the mask time elapses from the start of operation. When the mask time has elapsed, the control device 12 determines whether or not the defrosting operation is necessary based on the output of the frosting detection unit.
  • thermo-off for stopping the compressor 3 is performed.
  • a thermo-on for operating the compressor 3 is performed.
  • the control device 12 invalidates the detection of frost for the mask time from the start of the operation of the compressor 3.
  • the control device 12 enables detection of frost formation.
  • thermo-ON is repeatedly performed before the mask time has elapsed
  • the defrosting operation is not performed during this time even if the outdoor heat exchanger 5 is frosted.
  • the control device 12 forcibly performs the defrosting operation when the thermo-off and the thermo-on are repeatedly performed.
  • control device 12 When the control device 12 starts the thermo-off, it checks whether the operation time of the previous thermo-on is less than the specified time.
  • the specified time is set longer than the mask time. For example, when the mask time is 7 minutes, the specified time is 12 minutes.
  • the control device 12 performs a defrosting operation when a thermo-on for a specified time or less is performed a predetermined number of times.
  • the control device 12 confirms whether the room temperature meets the thermo-on condition (S1).
  • the thermo-on condition is that the room temperature is lower than the set temperature.
  • the compressor 3 starts operating in the heating cycle (S2).
  • the room temperature is equal to or higher than the set temperature, the compressor 3 remains stopped. At this time, the indoor fan 9 is driven and the air blowing operation is performed.
  • the control device 12 When the control device 12 performs the thermo-on, it confirms whether the room temperature meets the thermo-off condition (S3).
  • the thermo-off condition is that the room temperature is equal to or higher than the set temperature.
  • the control device 12 checks the operation time from the start of the heating operation. The control device 12 confirms whether the operation time has passed the specified time (7 minutes) (S4). During this time, frost detection is disabled. When the operation time has passed the mask time, the control device 12 enables frost detection and starts detection (S5).
  • the control device 12 validates the frost detection and confirms whether the detection result matches the defrost condition (S6). When the detection result matches the defrost condition, the control device 12 performs a normal defrost operation (S7). Also, the count of the number of thermo-on operations described later is reset.
  • the control device 12 stops the compressor 3 (S8). Then, the control device 12 checks the operation time of the thermo-on (S9). When the operation time is equal to or shorter than the specified time (12 minutes), the control device 12 increments the count of the thermo-on operation count by 1 and stores this count in the memory (S10). The control device 12 confirms whether the count of the number of operations has reached a predetermined number, for example, 6 (S11).
  • the control device 12 confirms whether the room temperature meets the thermo-on condition while continuing the thermo-off (S1).
  • the control device 12 When the room temperature decreases due to the thermo-off and the thermo-on condition is satisfied, the control device 12 operates the compressor 3 (S2). Room temperature rises with thermo-on. When the room temperature becomes higher than the set temperature, the thermo-off condition is satisfied (S3), and the compressor 3 is stopped (S8). The control device 12 checks the operation time of the last thermo-on (S9). When the operation time is equal to or shorter than the specified time (12 minutes), the control device 12 increments the thermo-ON operation count by 1 (S10) and checks whether the count has reached a predetermined number (S11).
  • the operating time of the thermo-on may exceed the mask time even if it is less than the specified time.
  • the control device 12 invalidates the frost detection. Therefore, even if the thermo-ON operation time exceeds the mask time, the control device 12 does not determine whether or not the defrosting operation is necessary.
  • the control device 12 validates the frosting detection and determines whether or not the defrosting operation is necessary.
  • the control device 12 performs a normal defrost operation. At this time, the count is reset.
  • the control device 12 confirms whether the room temperature meets the thermo-off condition. At this time, the count is not reset.
  • the control device 12 When the count reaches the predetermined number, the control device 12 forcibly starts the defrosting operation (S12). Further, the control device 12 resets the count of the thermo-ON operation count to zero. In this defrosting operation, “careful defrosting” is performed. That is, the heating cycle in which the rotation speed of the compressor 3 is increased and the indoor fan 9 is stopped is executed. When the temperature of the indoor heat exchanger 8 reaches a predetermined temperature, for example, 54 ° C., the heating cycle is switched to the cooling cycle. Thereby, heat is stored in the indoor heat exchanger 9, and after switching to the cooling cycle, the high-temperature refrigerant flows into the outdoor heat exchanger 5, so that defrosting can be performed quickly and reliably. When the defrosting operation is completed, the control device 12 switches to the heating cycle and continues the heating operation.
  • a predetermined temperature for example, 54 ° C.
  • the defrosting operation is forcibly performed, so that it is not possible to defrost the outdoor heat exchanger 5 despite the frost. Can do.
  • the thermo-off and the thermo-on are often repeated in a short cycle.
  • the outdoor heat exchanger 5 may be frosted and the outdoor heat exchanger 5 may be frozen.
  • the outdoor heat exchanger 5 is reliably defrosted and the heating operation is stably continued. be able to.
  • thermo-on cycle varies depending on the outside temperature. Since the efficiency of heating operation does not increase as the outside air temperature decreases, it takes time for the room temperature to reach the set temperature when the room temperature decreases. As a result, the operation time of the thermo-on becomes longer. Conversely, when the outside air temperature is not so low, the operation time of the thermo-on is shortened. Therefore, the air conditioner counts the number of thermo-on operations based on the specified time corresponding to the outside air temperature, and determines whether or not the frosting operation is necessary. Other configurations are the same as those in the first embodiment.
  • Control device 12 determines the specified time according to the outside air temperature.
  • the outside air temperature is high, it is set to a short prescribed time, and when the outside air temperature is low, it is set to a long prescribed time. For example, when the outside air temperature is ⁇ 5 ° C. or higher, it is set to 7 minutes, and when the outside air temperature is lower than ⁇ 5 ° C., it is set to 12 minutes.
  • the control device 12 monitors the outside air temperature based on the output of the outside air temperature detector 14 during the heating operation. As shown in FIG. 4, when the thermo-off is performed after the heating operation is started (S8), the control device 12 confirms the outside air temperature (S20) and sets a specified time according to the outside air temperature. When the outside air temperature is equal to or higher than ⁇ 5 ° C., the control device 12 checks the operation time of the last thermo-on based on the short specified time (7 minutes) (S21). When the outside air temperature is lower than ⁇ 5 ° C., the control device 12 checks the operation time of the last thermo-on based on the long specified time (12 minutes) (S22).
  • the control device 12 increments the thermo-on count by 1 (S10) and confirms whether the count has reached a predetermined number (S11).
  • the control device 12 does not count up and checks whether the room temperature meets the thermo-on condition (S1).
  • thermo-on operation time exceeds the specified time. Thereby, the time until it is determined whether or not the defrosting operation is necessary becomes longer. During this time, frost attached to the outdoor heat exchanger 5 grows and cannot be removed. Therefore, when the outside air temperature is low, by changing the specified time to a long time, even if the operating time becomes long when the outside air temperature is low, it can be counted reliably, and the time until defrosting operation is performed. Can be shortened. Therefore, defrosting of the outdoor heat exchanger 5 can be performed before the frost grows.
  • thermo-ON when the outside air temperature is high, the operation time of thermo-ON is usually short. When the operation time of the thermo-on is prolonged, the outdoor heat exchanger 5 may be frosted. In this case, the operating time exceeds the specified time. If the specified time is set to a short time according to the outside air temperature, the operation time of the thermo-on exceeds the specified time, so that the frost detection becomes effective. When frost is formed, frost formation is detected, so defrosting can be performed.
  • the defrosting operation is forcibly performed when the thermo-off and the thermo-on are repeated in a short cycle.
  • the outdoor heat exchanger 5 may not be frosted.
  • the defrosting operation is unnecessary. Therefore, the air conditioner performs frost detection before performing the forced defrosting operation. That is, the heating operation is performed so that the frost detection is effective at the predetermined number of thermo-ons.
  • Other configurations are the same as those in the first or second embodiment.
  • the control device 12 performs the thermo-on so that the operation time exceeds the specified time when performing the heating operation by the thermo-on that is a predetermined number of times (six times). As shown in FIG. 5, when the number of thermo-on operations reaches five (S30), the control device 12 confirms whether the room temperature meets the thermo-on condition while continuing the thermo-off (S31).
  • the control device 12 When the thermo-on condition is satisfied, the control device 12 performs the sixth thermo-on.
  • the compressor 3 operates in the heating cycle (S32). At this time, the control device 12 forcibly performs the heating operation for a time longer than the specified time, for example, 13 minutes. Accordingly, since the operation time exceeds the specified time, the control device 12 validates the frost detection and determines whether or not the defrost operation is necessary (S33). That is, after the defrosting operation is completed, the control device 12 confirms whether the detection result by the frost detection unit matches the defrost condition (S6). When the detection result matches the defrosting condition, the control device 12 performs the defrosting operation by “careful defrosting” and resets the count (S12). When the detection result does not match the defrosting condition, the control device 12 resets the count (S34) and confirms whether the room temperature meets the thermo-on condition while continuing the thermo-off (S1).
  • thermo-off and the thermo-on are repeated in a short cycle, frost formation is not detected, but if the defrosting operation is forcibly determined, the defrosting operation is performed if necessary. Done.
  • the defrosting operation is not performed, and an unnecessary defrosting operation can be prevented.
  • thermo-off and thermo-on are repeated in a short cycle, the detection of frost formation is invalidated.
  • the heating operation is performed by the thermo-on, if the room temperature is difficult to rise, the operation time of the thermo-on becomes long. In this case, frost may form on the outdoor heat exchanger 5 and the efficiency of the heating operation may deteriorate. Therefore, the air conditioner detects the frost formation on the outdoor heat exchanger 5 and performs the defrosting operation when the operation time of the thermo-on becomes long.
  • Other configurations are the same as those in the first to third embodiments.
  • the control device 12 When the operation time of the thermo-on exceeds the specified time, the control device 12 enables frost detection and determines whether or not the defrosting operation is necessary. As shown in FIG. 6, when the thermo-off is performed, the control device 12 checks the operation time of the previous thermo-on (S9). When the operation time is equal to or shorter than the specified time (12 minutes), the control device 12 increments the thermo-on operation count by 1 (S10) and checks whether the count has reached a predetermined number of times, for example, 6 times (S11). .
  • the control device 12 When the operation time of the thermo-on is longer than the specified time, the control device 12 resets the count (S40), enables frost detection, and starts frost detection (S41). The control device 12 confirms whether the detection result matches the defrost condition (S42). When the detection result matches the defrost condition, the control device 12 performs a normal defrost operation (S43). When the detection result does not match the defrosting condition, the control device 12 checks whether the room temperature matches the thermo-on condition (S1). If the room temperature meets the thermo-on condition, the control device 12 performs thermo-on and operates the compressor 3 in the heating cycle (S2).
  • thermo-on when the thermo-on is prolonged, frost detection is performed. If the outdoor heat exchanger 5 has frost formation, a defrosting operation is performed. Therefore, even if the thermo-on and the thermo-off are repeated, the defrosting of the outdoor heat exchanger 5 can be reliably performed when defrosting is necessary.
  • the air conditioner of the present invention includes a frost detection unit that detects frost formation on the outdoor heat exchanger 5 during the heating operation, and the control device 12 that performs the defrost operation when frost formation is detected.
  • the control device 12 invalidates the detection of frost for a predetermined mask time from the start of the heating operation, enables the detection of frost after the elapse of the mask time, and the control device 12 compresses during the heating operation.
  • the defrosting operation is forcibly performed.
  • the control device 12 performs the defrosting operation when the thermo-ON is performed a predetermined number of times or less, which is equal to or less than the specified time set to the mask time or longer. Thereby, defrosting can be reliably performed when thermo-on is repeated in a time shorter than the mask time.
  • the control device 12 checks whether the operation time of the immediately preceding thermo-on is equal to or less than the specified time, counts when the specified time is less than the specified time, and performs the defrosting operation when the count reaches a predetermined number of times. . Thereby, when the operation time of the thermo-on is longer than the specified time, it is excluded from the count. In this case, normal frost detection and defrosting operation can be performed, and defrosting can be performed.
  • the control device 12 determines the specified time according to the outside temperature, the specified time is shortened when the outside temperature is high, and the specified time is lengthened when the outside temperature is low. Therefore, since the operating time of the thermo-on is affected by the outside air temperature, by determining the specified time according to the outside air temperature, it is possible to reliably count the short-cycle thermo-on and to execute the forced defrosting operation as soon as possible.
  • the control device 12 resets the count when the thermo-ON longer than the specified time is performed. Thereby, since frost detection becomes effective, a defrost operation can be performed as needed.
  • thermo-off and the thermo-on are repeated during the heating operation, it may be determined whether to perform the forced defrosting operation. That is, the control device 12 determines the possibility of frost formation based on the detection result of the frost detection unit when the thermo-off and the thermo-on are repeated. And the control apparatus 12 determines the necessity of forced defrost operation based on the possibility of frost formation. When there is no possibility of frost formation, it is determined that the defrosting operation is not necessary. In this case, frost detection is performed when the thermo-ON operation time exceeds the mask time. Further, when there is a possibility of frost formation, it is determined that the defrosting operation is necessary, and the operation according to each of the above embodiments is performed.

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  • 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)
  • Air Conditioning Control Device (AREA)

Abstract

Dans un mode de chauffage, lorsqu'une opération ARRêT de thermostat est effectuée, la durée de l'opération MARCHE du thermostat immédiatement précédente est vérifiée. Si cette durée d'opération est inférieure ou égale à une durée prédéfinie, le nombre d'opérations MARCHE du thermostat est compté. Le nombre d'opérations MARCHE du thermostat est compté chaque fois que des opérations MARCHE ET ARRêT du thermostat sont répétées. Lorsque le nombre d'opérations atteint un nombre prédéfini, le système entre dans un mode de dégivrage forcé. Lorsque des opérations MARCHE et ARRêT du thermostat sont répétées sur un cycle court, le dégivrage de l'échangeur de chaleur extérieur est effectué. Ainsi, en forçant le système en mode de dégivrage dans des conditions dans lesquelles des opérations MARCHE et ARRêT du thermostat sont répétées sur un cycle court, les inconvénients d'une défaillance de dégivrage de l'échangeur de chaleur extérieur dans de telles conditions sont éliminés.
PCT/JP2015/078983 2014-10-15 2015-10-14 Climatiseur Ceased WO2016060145A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15850569.3A EP3208549B1 (fr) 2014-10-15 2015-10-14 Climatiseur
CN201580044377.XA CN106574798B (zh) 2014-10-15 2015-10-14 空气调节机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014210678A JP6466682B2 (ja) 2014-10-15 2014-10-15 空気調和機
JP2014-210678 2014-10-15

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WO2016060145A1 true WO2016060145A1 (fr) 2016-04-21

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JP (1) JP6466682B2 (fr)
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CN110631186A (zh) * 2018-06-25 2019-12-31 青岛海尔空调器有限总公司 一种空调的除霜控制方法及装置
CN111033152A (zh) * 2017-08-08 2020-04-17 大金工业株式会社 制冷机
JP7671000B1 (ja) 2023-10-31 2025-05-01 ダイキン工業株式会社 空気調和装置

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CN110631188B (zh) * 2018-06-25 2021-07-30 重庆海尔空调器有限公司 一种空调的除霜控制方法及装置
CN111795471B (zh) * 2020-07-14 2021-11-16 南京天加环境科技有限公司 一种空调器防冻控制方法
CN114151928B (zh) * 2021-11-26 2023-03-21 宁波奥克斯电气股份有限公司 一种空调器延长制热时间的控制方法、装置及空调器

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EP3208549B1 (fr) 2019-12-04
EP3208549A4 (fr) 2017-10-11

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