WO2020119364A1 - 多联机空调器及其控制方法 - Google Patents
多联机空调器及其控制方法 Download PDFInfo
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- WO2020119364A1 WO2020119364A1 PCT/CN2019/117277 CN2019117277W WO2020119364A1 WO 2020119364 A1 WO2020119364 A1 WO 2020119364A1 CN 2019117277 W CN2019117277 W CN 2019117277W WO 2020119364 A1 WO2020119364 A1 WO 2020119364A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- the present application belongs to the field of multi-line air conditioners, and particularly relates to the field of self-cleaning control of indoor units of multi-line air conditioners.
- multi-connected air conditioners have become very popular in the home market.
- Most multi-connected indoor units are embedded, but the embedded indoor unit cannot use the indoor unit heat exchanger after long-term use.
- self-cleaning technology is needed to meet the needs of users.
- the unit there is only one indoor unit, self-cleaning is not affected by the control of other indoor units, and the sensor information is relatively small, but for multi-line, the self-cleaning process will be interfered by the control of other indoor units. It involves a lot of sensor information, and it will also affect the performance of the entire unit. Therefore, the self-cleaning control algorithm of the multi-line indoor unit is the main technical problem.
- the present application provides a multi-line air conditioner and a control method thereof.
- the multiple indoor units of the present application can be any one or more of the self-cleaning modes simultaneously, and the control method guarantees the implementation of self-cleaning. There is no operational conflict between the indoor unit and other indoor units, thereby stabilizing the operation of the multi-connected air conditioner.
- a multi-line air conditioner includes a plurality of indoor units with heat exchangers, each indoor unit includes a controller, the controller includes a processor and a memory, a computer program is stored in the memory, and the controller is configured to achieve the following step:
- a certain indoor unit When a certain indoor unit receives a self-cleaning instruction, it detects whether the operation mode of other indoor units conflicts with the operation mode of the self-cleaning indoor unit,
- the self-cleaning waiting mode is executed, and the other indoor units continue to operate according to the set operation mode.
- the multi-connected air conditioner Before performing the self-cleaning mode, the multi-connected air conditioner considers whether the operation mode of other indoor units in the system conflicts with the indoor unit of the self-cleaning mode, thereby reducing the difference between the indoor unit performing the self-cleaning mode and other indoor units The operational conflicts between the two have minimal adverse effects on the overall performance.
- a certain indoor unit when a certain indoor unit receives a self-cleaning instruction, it detects whether there is an alarm in the multi-line system, and if there is an alarm, the self-cleaning instruction is not executed;
- the office is configured to be able to implement the following steps: when no alarms and no mode conflicts are detected, the following modes are executed in sequence:
- the condensed water mode that condenses the surface of the heat exchanger into water, the icing mode that freezes and freezes the heat exchanger, and the deicing mode that removes dust on the surface of the heat exchanger by deicing and defrosting.
- the heat exchanger In the self-cleaning mode, the heat exchanger is self-cleaned by freezing and defrosting the heat exchanger.
- freezing and frosting the surface tension changes are used to separate the particles and fins on the heat exchanger. Helps to remove the dust particles on the surface of the heat exchanger.
- the indoor unit that performs self-cleaning is set to a cooling mode
- the set temperature is a preset temperature
- the set air volume is that the motor rotates at a preset first speed to form a breeze, and the water pump is turned on and the anti-freeze mode is turned off;
- the air volume is controlled as a breeze, making full use of the characteristics of the high frequency of the initial control of the outdoor unit compressor, so that the heat exchanger quickly forms condensate.
- the controller when the controller executes the icing mode, it can implement the following steps: determine whether the temperature of the air pipe of the indoor unit heat exchanger continues to be less than the first preset temperature within the second preset time, and if so, end In icing mode, otherwise, the next step is performed;
- the second preset temperature is less than the third preset temperature
- the motor is controlled to rotate in the form of a breeze according to the preset first speed within a fourth preset time, If the temperature of the air pipe of the indoor unit heat exchanger is not less than the third preset temperature, the motor is controlled to stop running within the fourth preset time;
- the motor is controlled to stop at a preset time before the fourth preset time, and the remaining time within the fourth preset time
- the internal control motor runs at a preset first speed.
- the icing time can be automatically adjusted, and the amount of icing on the heat exchanger can be ensured to fully peel off the dust on the heat exchanger.
- the controller when the controller executes the ice melting mode, it can implement the following steps: determine whether the return air temperature of the indoor unit is less than the preset return air temperature,
- the heating mode is executed, and the motor is controlled to stop running to form heating ice.
- the controller when the controller executes the deicing mode, the following steps can be achieved: when the indoor unit performs the stroke air blowing deicing mode, the mode is continuously operated for a fifth preset time to exit the deicing mode;
- the ice-melting mode is automatically adjusted according to the information of the return air temperature sensor, which is conducive to rapid ice-melting, can effectively clean the heat exchanger, and effectively reduce energy consumption.
- the controller executes the self-cleaning standby mode
- the following steps can be realized: the motor is controlled to rotate and supply air at a preset first rotation speed within a preset waiting time.
- one or more units in the multi-connected air conditioner can perform self-cleaning separately or simultaneously.
- Self-cleaning and normal unit operation can be performed simultaneously.
- a control method of a multi-connected air conditioner includes the following steps:
- the priority is to check whether there is an alarm signal in the system, and to detect whether there is an operation conflict with other indoor units, so as to maintain the indoor unit's original operating mode priority execution .
- FIG. 1 is a schematic diagram of steps performed by a controller in a multi-connected air conditioner in an embodiment of the present application
- FIG. 2 is a schematic diagram of a condensed water mode in an embodiment of this application.
- FIG. 3 is a schematic diagram of an icing mode in an embodiment of this application.
- FIG. 4 is a schematic diagram of an ice melting mode in an embodiment of this application.
- the Chinese invention patent CN 107655170A discloses a self-cleaning method and air conditioner of an air conditioner heat exchanger
- the invention discloses a self-cleaning method and air conditioner of an air conditioner heat exchanger, wherein the air conditioner includes a heat exchanger And an electric heating element, the electric heating element is set corresponding to the heat exchanger;
- the self-cleaning method of the air conditioner heat exchanger includes the following steps: acquiring a control self-cleaning control instruction, and entering a self-cleaning mode; adjusting the air conditioner The fan speed of the heater and/or reduce the temperature of the indoor heat exchanger to cause frost on the heat exchanger; when the frost is completed, turn on the electric heating element and adjust the opening degree of the air deflector of the air conditioner To defrost the heat exchanger.
- first”, “second”, and “third” are for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined as “first”, “second”, and “third” may explicitly or implicitly include one or more of the features.
- connection should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the connection between two components.
- installation should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the connection between two components.
- the present application provides a multi-connected air conditioner.
- the multi-connected air conditioner includes a plurality of indoor units with heat exchangers, and each indoor unit includes a motor, a water pump, etc.
- the structure of the unit is the same, the difference is mainly the controller in the indoor unit. See Figure 1 for details as follows:
- Each indoor unit includes a controller.
- the controller includes a processor and a memory.
- a computer program is stored in the memory. When the computer program is executed by the processor, the following steps can be implemented:
- an indoor unit When an indoor unit receives a self-cleaning instruction, it detects whether there is an alarm in the multi-line system, and detects whether the operation mode of other indoor units conflicts with the operation mode of the self-cleaning indoor unit. If an alarm signal is detected, the execution of self-cleaning is stopped. Cleaning instructions
- the above mode conflict refers to, for example, when the indoor unit requiring the self-cleaning mode is performing the cooling mode, and any other indoor unit is performing the heating mode, wherein the above “executing cooling mode” and “executing heating mode” , Which are operating modes set by different users on the indoor unit.
- the multi-connected air conditioner prioritizes whether there is an alarm signal in the system and whether the operation mode of other indoor units in the system conflicts with the indoor unit of the self-cleaning mode, thereby reducing the execution of self-cleaning
- the operation conflict between the indoor unit of the mode and other indoor units has the least adverse effect on the performance of the whole unit.
- the controller is configured to be able to implement the following steps: When no alarms and no mode conflicts are detected, the following modes are executed in sequence:
- the condensed water mode that condenses the surface of the heat exchanger into water, the icing mode that freezes and freezes the heat exchanger, and the deicing mode that removes dust on the surface of the heat exchanger by deicing and defrosting.
- the dust particles on the surface of the heater are taken away.
- Set the condensate formation parameters set the indoor unit that performs self-cleaning to the cooling mode, set the temperature to the preset temperature, set the air volume to the motor at the preset first speed to form a breeze, turn on the water pump and turn off the anti-freeze mode ;
- the indoor unit In the condensed water mode, the indoor unit is controlled in the cooling mode, the air volume is a breeze, that is, the motor rotates at the preset first speed, the indoor unit return air temperature is Ti, and the set temperature is Ts , Forced operation for the first preset time T1 minutes, make full use of the characteristics of the outdoor unit compressor start control frequency is high, so that the heat exchanger quickly forms condensate.
- the controller when the controller executes the icing mode, it can realize the following steps: determine whether the temperature of the air pipe of the indoor unit heat exchanger continues to be less than the first preset temperature within the second preset time, and if so, end the icing mode , Otherwise, execute the next step;
- Control the motor to rotate in the third preset time according to the preset first speed to form a breeze collect the temperature of the air pipe of the indoor unit heat exchanger within the preset time in the third preset time, and judge the temperature and the second The size of the preset temperature and the third preset temperature, where the second preset temperature is less than the third preset temperature, if the temperature of the air pipe of the indoor unit heat exchanger is less than the second preset temperature, the motor is controlled for the fourth preset time It rotates in the form of breeze according to the preset first speed, if the temperature of the air pipe of the indoor unit heat exchanger is not less than the third preset temperature, the motor is controlled to stop running within the fourth preset time;
- the motor is controlled to stop at a preset time before the fourth preset time, and the remaining time within the fourth preset time
- the internal control motor runs at a preset first speed.
- the indoor unit in the icing mode, take FIG. 2 as an example: in the absence of an alarm and mode conflict, the indoor unit can normally enter the self-cleaning icing stage.
- the indoor unit return air temperature is Ti
- the set temperature is Ts, forced operation
- Tg is the temperature of the air pipe of the indoor unit heat exchanger; TEMP1 and TEMP2 are respectively two different temperatures selected in the first preset temperature, and T21 and T22 are respectively selected corresponding to TEMP1 and TEMP2 in the second preset time Two times, among them, TEMP1>TEMP2, T21 ⁇ T22.
- the air volume control is different, as follows:
- T24 minutes before T2 the air volume is a breeze
- Tg ⁇ TEMP3 air volume breeze within T2-T24 minutes
- Tg ⁇ TEMP4 The fan stops within T2-T24 minutes
- the total icing time is T2
- T24 is the third preset time
- T2-T24 is the fourth preset time
- the last N1 minutes is the last preset time
- the first N2 minutes is the previous preset time
- TEMP3 And TEMP4 are the second preset temperature and the third preset temperature, respectively.
- Tg ⁇ -10°C for 5 minutes to exit the icing
- Tg ⁇ -5°C for 7 minutes to exit the icing.
- the icing phase will last for 10 minutes and then exit. Among them, the first 5 minutes of 10 minutes, the fan breeze runs;
- the fan is controlled according to the Tg value in the next 5 minutes.
- the Tg value is the continuous collection value of the first 5 minutes and the last 2 minutes, and compared with the preset value, that is, there are three situations:
- the self-cleaning icing stage can automatically adjust the icing time according to the information of the heat exchanger air pipe temperature sensor, and ensure the amount of icing on the heat exchanger, and fully strip the dust on the heat exchanger.
- the controller when the controller executes the deicing mode, it can realize the following steps: determine whether the return air temperature of the indoor unit is greater than the preset return air temperature, and if so, execute the control motor to rotate at a preset second speed to form a stroke air supply ;
- the heating mode is executed, and the motor is controlled to stop running to form heating ice.
- the controller executes the defrosting mode, the following steps can be achieved: when the indoor unit performs the stroke air blowing defrosting mode, it continues to run the mode for a fifth preset time and then exits the defrosting mode;
- the preset second speed is greater than the preset first speed.
- the mode of the indoor unit deicing stage needs to be adjusted according to the return air temperature, as follows:
- the preset return air temperature Ti send air to melt ice
- the duration of ice melting varies according to the mode of ice melting, as follows: when supplying air to melt ice, the ice melting continues for T32 minutes to exit; when heating ice, the duration of ice melting needs to be based on the information of the liquid pipe temperature sensor Make a judgment as follows:
- Tl ⁇ TEMP5 When Tl ⁇ TEMP5 lasts T31 seconds, it will exit the deicing state, otherwise it will exit after T32 minutes.
- the ice melting mode is automatically adjusted, which is conducive to rapid ice melting, can effectively clean the heat exchanger, and effectively reduces energy consumption.
- the motor is controlled to rotate and supply air at a preset first rotation speed within a preset waiting time.
- the preset waiting time is T11.
- An embodiment of the present application also provides a control method for a multi-connected air conditioner.
- the control method is based on the multi-connected air conditioner described in any of the above embodiments.
- the multi-connected air conditioner When the multi-connected air conditioner is in operation, any one or more When the indoor unit executes the self-cleaning mode, it detects whether the multi-line air conditioner has an alarm signal, and if there is an alarm signal, it exits the self-cleaning mode;
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Abstract
本申请提出一种多联机空调器及其控制方法,该多联机空调器包括多个具有换热器的室内机,每个室内机均包括控制器,控制器包括处理器以及存储器,存储器内存储有计算机程序,控制器被配置能够实现以下步骤:当某一个或多个室内机接收到自清洁指令时,检测其他室内机运行模式是否与该自清洁室内机运行模式冲突。该控制方法基于上述多联机空调器。本申请的多个室内机可以为任一或多个同时执行自清洁模式,且该控制方法保障了执行自清洁的室内机与其他室内机之间不存在运行冲突,从而使多联机空调器的运行稳定。
Description
Multi-connected air conditioner and control method
本申请要求在2018年12月14日提交中国专利局、申请号为201811531030.X、发明名称为“多联机空调器及其控制方法”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请属于多联机空调领域,尤其涉及一种多联机空调器室内机的自清洁控制领域。
目前,随着人们生活水平的提高,多联机空调器在家用市场已经非常普及,多联机室内机大部分是嵌入式的,但是该嵌入式室内机在长时间使用后无法对室内机换热器进行人工清洗,因此需要自清洁技术来满足用户的需求。而对于单元机来说,室内机只有一台,自清洁不受其他室内机控制的影响,传感器信息相对较少,但对于多联机来说,自清洁过程中会受其他室内机控制的干扰,涉及传感器信息较多,同时对整个机组的性能也会带来影响,因此多联机室内机自清洁的控制算法,是面临的主要技术难题。
发明内容
为了解决上述问题,本申请提供了一种多联机空调器及其控制方法,本申请的多个室内机可以为任一或多个同时执行自清洁模式,且该控制方法保障了执行自清洁的室内机与其他室内机之间不存在运行冲突,从而使多联机空调器的运行稳定。
为了达到上述目的,本申请采用的技术方案为:
一种多联机空调器,包括多个具有换热器的室内机,每个室内机均包括控制器,控制器包括处理器以及存储器,存储器内存储有计算机程序,控制器被配置为能够实现以下步骤:
当某一个室内机接收到自清洁指令时,检测其他室内机运行模式是否与该自清洁室内机运行模式冲突,
如模式冲突,则执行自清洁等待模式,且其他室内机继续按照设定运行模式运行。
该多联机空调器,其通过在执行自清洁模式前,考虑系统内其他室内机的运行模式是否与该自清洁模式的室内机相冲突,从而减少执行自清洁模式的室内机与其他室内机之间的运行冲突,对整机性能产生尽量减少不利影响。
在本申请某些实施例中,当某一个室内机接收到自清洁指令时,检测多联机系统内是否有报警,如有报警,则不执行自清洁指令;
考虑系统是否有报警,从而减少执行自清洁模式的室内机与其他室内机之间的运行冲突,对整机性能产生尽量减少不利影响。
在本申请某些实施例中,处被配置为能够实现以下步骤:当检测无报警以及无模式冲突时,依次执行以下模式:
使换热器表面凝结成水的凝结水模式,使换热器结霜和结冰的结冰模式,以及通过除冰和除霜带走换热器表面灰尘的化冰模式。
在执行自清洁模式时,通过对换热器结冰化冰方式进行换热器自清洁,结冰结霜时利用表面张力变化,将换热器上的颗粒与翅片分离,化冰则有利于将换热器表面的粉尘颗粒带走。
在本申请某些实施例中,控制器执行结水模式时,能够实现以下步骤:设定凝结水形成参数:
即设定执行自清洁的室内机为制冷模式,设定温度为预设温度,设定风量为电机按照预设第一转速转动形成微风,打开水泵并关闭防冻结模式;
设定凝结水形成参数后,持续等待第一预设时间,以使换热器表面形成凝结水。
室内机在制冷模式下,风量控制为微风,充分利用了室外机压缩机始动控 制频率高的特点,使换热器快速形成冷凝水。
在本申请某些实施例中,控制器执行结冰模式时,能够实现以下步骤:判断室内机换热器气管温度是否在第二预设时间内持续小于第一预设温度,如是,则结束结冰模式,反之,则执行下一步骤;
控制电机按照预设第一转速在第三预设时间内转动以形成微风,采集第三预设时间中的后段预设时间内的室内机换热器气管温度,并判断该温度与第二预设温度与第三预设温度的大小;
其中,第二预设温度小于第三预设温度,如室内机换热器气管温度小于第二预设温度,则控制电机在第四预设时间内按照预设第一转速以微风形式转动,如室内机换热器气管温度不小于第三预设温度,则控制电机在第四预设时间内停止运转;
如室内机换热器气管温度在第二预设温度与第三预设温度之间,则控制电机在第四预设时间内的前段预设时间停止,在第四预设时间内的剩余时间内控制电机以预设第一转速运转。
自清洁结冰阶段通过换热器气管温度传感器的信息,可实现自动调节结冰时间,并保证换热器上的结冰量,以充分剥离换热器上的灰尘。
在本申请某些实施例中,控制器执行化冰模式时,能够实现以下步骤:判断室内机回风温度是否小于预设回风温度,
如是,则执行控制电机以预设第二转速转动形成中风送风;
如否,则执行制热模式,并控制电机停止运转,以形成制热化冰。
在本申请某些实施例中,控制器执行化冰模式时,能够实现以下步骤:在室内机进行中风送风化冰模式时,持续运行该模式第五预设时间后退出化冰模式;
在室内机进行制热化冰模式时,按照以下步骤执行:首先判断液管温度传感器温度在第六预设时间内运行是否大于第五预设温度,如是,则退出化冰模式,反之,则继续执行第七预设时间的制热化冰。
通过上述的送风化冰以及制热化冰,根据回风温度传感器信息自动调节化冰模式,有利于快速化冰,可以有效的清洗换热器,同时有效的降低了能耗。
在本申请某些实施例中,控制器执行时自清洁等待模式时能够实现以下步骤:在预设等待时间内控制电机以预设第一转速转动送风运行。
通过自清洁等待模式,多联机空调器中的一台或多台机组分别或同时进行自清洁,自清洁和正常机组运行可以同时进行。
一种多联机空调器的控制方法,基于上述任一实施例所述的多联机空调器,包括以下步骤:
任一或多个室内机执行自清洁模式时,检测多联机空调器是否有报警信号,如有报警信号,则退出自清洁模式;
检测其他室内机是否与该执行自清洁模式室内机有运行冲突,如有运行冲突信号,则在预设等待时间内送风运行,以使换热器表面保持干燥,并优先执行室内机设定运行模式。
多联机空调器中的一个或多个室内机执行自清洁模式时,优先检查系统内是否存在报警信号,并检测与其他室内机之间是否存在运行冲突,以保持室内机原有运行模式优先执行。
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本申请某一实施例中多联机空调器中控制器执行步骤的示意图;
图2为本申请某一实施例中凝结水模式的示意图;
图3为本申请某一实施例中结冰模式的示意图;
图4为本申请某一实施例中化冰模式的示意图。
中国发明专利CN 107655170 A中公开了一种空调器换热器的自清洁方法和空调器,该发明公开一种空调器换热器的自清洁方法和空调器,其中,空调器包括换热器和电加热件,所述电加热件对应所述换热器设置;所述空调器换热器的自清洁方法包括以下步骤:获取控制自清洁控制指令,并进入自清洁模式;调节所述空调器的风机转速和/或降低所述室内换热器的温度以使所述换热器上凝霜;在凝霜完成时,开启所述电加热件并调节空调器的导风板的开度以对所述换热器化霜。
上述现有专利通过结冰与化冰方式实现了自清洁方式,但是在执行自清洁指令时,其没有对室内机的运行模式与报警信息进行排除,导致了运行自清洁模式的室内机与其他室内机之间可能存在运行冲突。
下面,通过示例性的实施方式对本申请进行具体描述。然而应当理解,在没有进一步叙述的情况下,一个实施方式中的元件、结构和特征也可以有益地结合到其他实施方式中。
在本申请的描述中,需要理解的是,术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。
术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括一个或者更多个该特征。
在本申请的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况 理解上述术语在本申请中的具体含义。
如图1所示,本申请提供了一种多联机空调器,该多联机空调器包括多个具有换热器的室内机,每个室内机中包括有电机、水泵等,其与现有室内机结构相同,区别主要在于其室内机中的控制器。具体参见图1说明如下:
每个室内机均包括控制器,控制器包括处理器以及存储器,存储器内存储有计算机程序,计算机程序被所述处理器执行时能够实现以下步骤:
当某一个室内机接收到自清洁指令时,检测多联机系统内是否有报警,以及检测其他室内机运行模式是否与该自清洁室内机运行模式冲突,如检测到有报警信号,则停止执行自清洁指令;
检测其他室内机运行模式是否与该自清洁室内机运行模式冲突,如模式冲突,则执行自清洁等待模式,且其他室内机继续按照设定运行模式运行。
上述所述模式冲突是指,如当需要自清洁模式的室内机正在执行制冷模式,而其他任一室内机正在执行制热模式,其中上述“正在执行制冷模式”与“正在执行制热模式”,其均为不同用户对室内机设定的运行模式。
该多联机空调器,其通过在执行自清洁模式前,优先考虑系统内是否有报警信号,以及系统内其他室内机的运行模式是否与该自清洁模式的室内机相冲突,从而减少执行自清洁模式的室内机与其他室内机之间的运行冲突,对整机性能产生尽量减少不利影响。
如图1-图4所示,上述中,控制器被配置为能够实现以下步骤:当检测无报警以及无模式冲突时,依次执行以下模式:
使换热器表面凝结成水的凝结水模式,使换热器结霜和结冰的结冰模式,以及通过除冰和除霜带走换热器表面灰尘的化冰模式。
通过上述凝结水模式、结冰模式和化冰模式三种模式,从而依次让换热器充分吸收空气的水分,表面形成凝结水;同时利用蒸发器的表面张力变化,将换热器上的颗粒与翅片分离。
而通过化冰阶段则将热器表面的粉尘颗粒带走。
具体的,如图2所示,上述中,控制器执行凝结水模式时,能够实现以下步骤:
设定凝结水形成参数:即设定执行自清洁的室内机为制冷模式,设定温度为预设温度,设定风量为电机按照预设第一转速转动形成微风,打开水泵并关闭防冻结模式;
设定凝结水形成参数后,持续等待第一预设时间,以使换热器表面形成凝结水。
以图2中具体参数举例说明:在凝结水模式下,控制室内机为制冷模式下,风量为微风,即电机按照预设第一转速转动,室内机回风温度为Ti,设定温度为Ts,强制运转第一预设时间T1分钟,充分利用室外机压缩机始动控制频率高的特点,使换热器快速形成冷凝水。
如图3所示,控制器执行结冰模式时,能够实现以下步骤:判断室内机换热器气管温度是否在第二预设时间内持续小于第一预设温度,如是,则结束结冰模式,反之,则执行下一步骤;
控制电机按照预设第一转速在第三预设时间内转动以形成微风,采集第三预设时间中的后段预设时间内的室内机换热器气管温度,并判断该温度与第二预设温度与第三预设温度的大小,其中,第二预设温度小于第三预设温度,如室内机换热器气管温度小于第二预设温度,则控制电机在第四预设时间内按照预设第一转速以微风形式转动,如室内机换热器气管温度不小于第三预设温度,则控制电机在第四预设时间内停止运转;
如室内机换热器气管温度在第二预设温度与第三预设温度之间,则控制电机在第四预设时间内的前段预设时间停止,在第四预设时间内的剩余时间内控制电机以预设第一转速运转。
具体的,在结冰模式中,以图2为例说明:在没有报警和模式冲突的情况下,室内机可以正常进入自清洁结冰阶段。
控制室内机制冷模式下,室内机回风温度为Ti,设定温度为Ts,强制运转,
充分利用室外机压缩机始动控制频率高的特点,使换热器快速结冰。
当Tg满足结冰阶段提前退出的条件时,如下:
Tg<TEMP1时,结冰阶段持续T21分钟退出;
Tg<TEMP2时,结冰阶段持续T22分钟退出;
其中,上述中,Tg为室内机换热器气管温度;TEMP1和TEMP2分别为第一预设温度中选取的两个不同温度,T21和T22分别为第二预设时间内对应于TEMP1和TEMP2选取的两个时间,其中,TEMP1>TEMP2,T21<T22。
当Tg不满足结冰阶段提前退出的条件时,自清洁结冰阶段持续T2分钟退出。在整个T2的时间内,风量控制有所不同,如下:
T2的前T24分钟内:风量为微风;
T2-T24分钟内,需要判断之前T24分钟的后N1分钟Tg的值来控制风量:
Tg<TEMP3:T2-T24分钟内风量微风;
Tg≥TEMP4:T2-T24分钟内风机停止;
其他:T2-T2分钟的前N2分钟风机停止,T2-T24-N2分钟微风运转;
上述中,结冰总时间为T2,T24为第三预设时间,T2-T24为第四预设时间,后N1分钟即为后段预设时间,前N2分钟即为前段预设时间,TEMP3和TEMP4分别为第二预设温度和第三预设温度。
为了更清楚的对上述程序进行设定,下面举例说明:
结冰时,当Tg满足一定条件时,结冰阶段会提前退出。
进入结冰开始计时,结冰整个过程中,Tg<-10℃持续5分钟退出结冰,Tg<-5℃(TEMP2)持续7分钟退出结冰。
但是,当Tg不满足以上条件时,结冰阶段将持续满10分钟后退出。其中,10分钟的前5分钟,风机微风运行;
后5分钟根据Tg的值进行风机控制,Tg值是前5分钟的后2分钟的持续采集值,并进行与预设值比较,即具有三种情况:
a.Tg<-3℃(TEMP3)时,则后5分钟微风运行;
b.Tg>1℃(TEMP4)时,则后5分钟风机停止;
c.Tg不满足以上两个条件时,则后5分钟(T23-T24)的前4分钟(N2)风机停止,后1分钟(T23-T24-N2)风机微风。
通过上述,自清洁结冰阶段根据换热器气管温度传感器信息,可以自动调节结冰时间,并保证换热器上的结冰量,充分剥离换热器上的灰尘。
如图4所示,控制器执行化冰模式时,能够实现以下步骤:判断室内机回风温度是否大于预设回风温度,如是,则执行控制电机以预设第二转速转动形成中风送风;
如否,则执行制热模式,并控制电机停止运转,以形成制热化冰。
控制器执行化冰模式时,能够实现以下步骤:在室内机进行中风送风化冰模式时,持续运行该模式第五预设时间后退出化冰模式;
在室内机进行制热化冰模式时,按照以下步骤执行:首先判断液管温度传感器温度在第六预设时间内运行是否大于第五预设温度,如是,则退出化冰模式,反之,则继续执行第七预设时间的制热化冰。
其中,预设第二转速大于预设第一转速。
以图4为例具体说明:在没有报警和模式冲突的情况下,室内机可以正常进入自清洁化冰阶段。
室内机化冰阶段的模式需根据回风温度进行调节,如下:
当室内机回风温度≥预设回风温度Ti时:送风化冰;
当室内机回风温度<Ti时:制热化冰;
其中化冰持续的时间,根据化冰的模式不同而不同,如下:当送风化冰时,化冰持续T32分钟退出;当制热化冰时,化冰持续时间需要根据液管温度传感器信息进行判断,如下:
Tl≥TEMP5持续T31秒时,退出化冰状态,否则持续T32分钟退出。
化冰阶段根据回风温度传感器信息自动调节化冰模式,有利于快速化冰,可以有效的清洗换热器,同时有效的降低了能耗。
控制器执行自清洁等待模式时能够实现以下步骤:在预设等待时间内控制电机以预设第一转速转动送风运行。
如图1所示,该预设等待时间即为T11。
本申请某一实施例同时提供了一种多联机空调器的控制方法,该控制方法基于上述任一实施例所述的多联机空调器,该多联机空调器在运行时,任一或多个室内机执行自清洁模式时,检测多联机空调器是否有报警信号,如有报警信号,则退出自清洁模式;
检测其他室内机是否与该执行自清洁模式室内机有运行冲突,如有运行冲突信号,则在预设等待时间内送风运行,以使换热器表面保持干燥,并优先执行室内机设定运行模式。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。
因此,本申请的保护范围应以所述权利要求的保护范围为准。
Claims (9)
- 一种多联机空调器,包括多个具有换热器的室内机,其特征在于:每个室内机均包括控制器,控制器包括处理器以及存储器,所述控制器被配置为能够实现以下步骤:当某一个室内机接收到自清洁指令时,检测其他室内机运行模式是否与该自清洁室内机运行模式冲突,如模式冲突,则执行自清洁等待模式,且其他室内机继续按照设定运行模式运行。
- 根据权利要求1所述的多联机空调器,其特征在于:当某一个室内机接收到自清洁指令时,检测多联机系统内是否有报警,如有报警,则不执行自清洁指令;
- 根据权利要求2所述的多联机空调器,其特征在于:所述控制器被配置为能够实现以下步骤:当检测无报警以及无模式冲突时,依次执行以下模式:使换热器表面凝结成水的凝结水模式,使换热器结霜和结冰的结冰模式,以及通过除冰和除霜带走换热器表面灰尘的化冰模式。
- 根据权利要求1所述的多联机空调器,其特征在于:所述控制器执行凝结水模式时,能够实现以下步骤:设定凝结水形成参数:即设定执行自清洁的室内机为制冷模式,设定温度为预设温度,设定风量为电机按照预设第一转速转动形成微风,打开水泵并关闭防冻结模式;设定凝结水形成参数后,持续等待第一预设时间,以使换热器表面形成凝结水。
- 根据权利要求2-4任一权利要求所述的多联机空调器,其特征在于:所述控制器执行结冰模式时,能够实现以下步骤:判断室内机换热器气管温度是否在 第二预设时间内持续小于第一预设温度,如是,则结束结冰模式,反之,则执行下一步骤;控制电机按照预设第一转速在第三预设时间内转动以形成微风,采集第三预设时间中的后段预设时间内的室内机换热器气管温度,并判断该温度与第二预设温度与第三预设温度的大小,其中,第二预设温度小于第三预设温度,如室内机换热器气管温度小于第二预设温度,则控制电机在第三预设时间内按照预设第一转速以微风形式转动,如室内机换热器气管温度不小于第三预设温度,则控制电机在第四预设时间内停止运转;如室内机换热器气管温度在第二预设温度与第三预设温度之间,则控制电机在第四预设时间内的前段预设时间停止,在第四预设时间内的剩余时间内控制电机以预设第一转速运转。
- 根据权利要求5所述的多联机空调器,其特征在于:所述控制器执行化冰模式时,能够实现以下步骤:判断室内机回风温度是否大于预设回风温度,如是,则执行控制电机以预设第二转速转动形成中风送风;如否,则执行制热模式,并控制电机停止运转,以形成制热化冰。
- 根据权利要求6所述的多联机空调器,其特征在于:所述控制器执行化冰模式时,能够实现以下步骤:在室内机进行中风送风化冰模式时,持续运行该模式第五预设时间后退出化冰模式;在室内机进行制热化冰模式时,按照以下步骤执行:首先判断液管温度传感器温度在第六预设时间内运行是否大于第五预设温度,如是,则退出化冰模式,反之,则继续执行第七预设时间的制热化冰。
- 根据权利要求1所述的多联机空调器,其特征在于:所述控制器执行时自清洁等待模式时能够实现以下步骤:在预设等待时间内控制电机以预设第一转速转动送风运行。
- 一种多联机空调器的控制方法,基于权利要求1-8中任一项所述的多联机空 调器,其特征在于:任一或多个室内机执行自清洁模式时,检测其他室内机是否与该执行自清洁模式室内机有运行冲突,如有运行冲突,则在预设等待时间内送风运行,以使换热器表面保持干燥,并优先执行室内机设定运行模式。
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