WO2019042043A1 - 一种空调自清洁的控制方法及装置 - Google Patents

一种空调自清洁的控制方法及装置 Download PDF

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WO2019042043A1
WO2019042043A1 PCT/CN2018/096355 CN2018096355W WO2019042043A1 WO 2019042043 A1 WO2019042043 A1 WO 2019042043A1 CN 2018096355 W CN2018096355 W CN 2018096355W WO 2019042043 A1 WO2019042043 A1 WO 2019042043A1
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cleaning
self
heat exchanger
air conditioner
current target
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PCT/CN2018/096355
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English (en)
French (fr)
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谢琳琳
李朋
曹壬艳
张青花
何振华
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青岛海尔空调器有限总公司
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Publication of WO2019042043A1 publication Critical patent/WO2019042043A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements

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  • This paper relates to the field of air conditioning technology, and in particular to a method and device for controlling self-cleaning of an air conditioner.
  • the cleaning method of the air conditioner indoor unit in the prior art mainly includes two methods of manual cleaning and self-cleaning of the air conditioner, wherein the self-cleaning method of the air conditioner is mainly divided into a frosting stage and a defrosting stage, wherein, in the frosting stage,
  • the air conditioner operates in the cooling mode first, and increases the refrigerant output of the indoor heat exchanger, so that the moisture in the indoor air can gradually condense into frost or ice layer on the outer surface of the heat exchanger, in the process of condensation
  • the frost layer can be combined with the dust to peel the dust from the outer surface of the heat exchanger; afterwards, during the defrosting stage, the air conditioner operates in the heating mode, so that the frost layer condensed on the outer surface of the heat exchanger melts, and the dust also The melted water stream is collected into the water tray, so that the self-cleaning effect on the air conditioner can be achieved.
  • the invention provides a control method and device for self-cleaning of an air conditioner, aiming at avoiding the problem that the self-cleaning state of the indoor and outdoor machines is not matched due to the user's misoperation.
  • a control method for self-cleaning of an air conditioner comprising: controlling an air conditioner to enter a self-cleaning mode when a condition requiring self-cleaning is satisfied; and when the air conditioner receives a cleaning non-current target heat exchanger
  • the self-cleaning command acquires the cumulative running time of the compressor in the self-cleaning mode; when the accumulated running time is greater than or equal to the preset duration threshold, the control air conditioner continues to perform the self-cleaning process of cleaning the current target heat exchanger.
  • control method further includes: when the air conditioner enters the self-cleaning mode, the indoor unit and the outdoor unit of the air conditioner start timing respectively; when the durations of the indoor unit and the outdoor unit reach the preset cleaning time, the air conditioner is controlled to exit the self-cleaning. mode.
  • the cleaning duration includes a first cleaning duration and a second cleaning duration; and the controlling method further comprises: controlling the air conditioner to perform cleaning of the non-current target heat exchanger when the timing of cleaning the current target heat exchanger reaches the first cleaning duration The cleaning process continues for a second cleaning period.
  • a control device for self-cleaning of an air conditioner comprising: an access unit, wherein the air conditioner controls to enter the self-cleaning mode when the condition for self-cleaning is satisfied; the acquiring unit is configured to Obtaining an accumulated running time of the compressor in the self-cleaning mode when the air conditioner receives the self-cleaning instruction for cleaning the non-current target heat exchanger; and executing the unit, when the accumulated running time is greater than or equal to a preset duration threshold, Controlling the air conditioner continues to perform a self-cleaning process that cleans the current target heat exchanger.
  • the executing unit is further configured to: when the accumulated running time is less than a preset duration threshold, control the air conditioner to perform a self-cleaning process of cleaning the non-current target heat exchanger.
  • the cleaning duration includes a first cleaning duration and a second cleaning duration; the execution unit is further configured to: when the timing of cleaning the current target heat exchanger reaches the first cleaning duration, control the air conditioner to perform cleaning of the non-current target heat exchanger Self-cleaning process for a second cleaning period.
  • timing unit is further configured to: when the air conditioner continues to perform the self-cleaning process of cleaning the current target heat exchanger, the indoor unit and the outdoor unit continue to time.
  • FIG. 1 is a flow chart of a self-cleaning control method herein, according to an exemplary embodiment
  • FIG. 2 is a block diagram showing the structure of a self-cleaning control device herein, according to an exemplary embodiment.
  • the air conditioner in this paper includes an indoor heat exchanger, an outdoor heat exchanger, a throttling device and a compressor.
  • the indoor heat exchanger, the outdoor heat exchanger, the throttling device and the compressor are connected by a refrigerant pipeline to form a refrigerant circulation loop, and the refrigerant passes through the refrigerant.
  • the circulation circuit flows along the flow direction set by different operation modes to realize functions such as heating, cooling and self-cleaning.
  • the operating modes of the air conditioner include a cooling mode, a heating mode, and a self-cleaning mode, wherein the cooling mode is generally applied to a high temperature condition in summer to reduce the indoor ambient temperature; and the heating mode is generally applied to a low temperature work in winter. In addition, it is used to raise the indoor ambient temperature; while the self-cleaning mode is generally the user's self-selected function mode or self-starting function, which can accumulate dust and dirt on the heat exchanger, and automatically clean the heat exchanger. .
  • the flow direction of the refrigerant set in the air-conditioning operation cooling mode is that the high-temperature refrigerant discharged from the compressor first flows through the outdoor heat exchanger to exchange heat with the outdoor environment, and then exchanges heat with the indoor environment in the inflowing indoor heat exchanger, and finally the refrigerant flows back to the compression.
  • the machine re-compresses the operation; in this process, the refrigerant flowing through the outdoor heat exchanger releases heat to the outdoor environment, and the refrigerant flowing through the indoor heat exchanger absorbs heat from the indoor environment, and the circulating flow of the refrigerant in the refrigerant circulation loop
  • the indoor heat can be continuously discharged into the outdoor environment, so that the cooling purpose of reducing the indoor ambient temperature can be achieved.
  • the high-temperature refrigerant discharged from the refrigerant flow in the heating mode operation to the compressor first flows through the indoor heat exchanger to exchange heat with the outdoor environment, and then exchanges heat with the indoor environment in the outdoor heat exchanger, and finally the refrigerant returns.
  • the compressor is recompressed; in this process, the refrigerant flowing through the indoor heat exchanger releases heat to the indoor environment, and the refrigerant flowing through the outdoor heat exchanger absorbs heat from the outdoor environment, and the refrigerant passes through the refrigerant circulation loop.
  • the circulating flow can continuously release the outdoor heat to the indoor environment, so that the heating effect of improving the indoor ambient temperature can be achieved.
  • the workflow of the air conditioner running self-cleaning mode mainly includes three stages in sequence: indoor heat exchanger condensation stage, indoor During the defrosting stage of the heat exchanger (that is, the outdoor heat exchanger condensation stage) and the outdoor heat exchanger defrosting stage, in the indoor heat exchanger condensation stage, the indoor heat exchanger of the indoor unit can be condensed and frosted. In the indoor heat exchanger defrosting stage, the frost condensed by the indoor heat exchanger in the previous condensation stage melts, impurities such as dust can be separated from the indoor heat exchanger with the melted condensed water, and the indoor heat exchanger is cleaned.
  • the cooling capacity of the high-temperature refrigerant can increase the internal temperature of the indoor unit, and the temperature inside the indoor unit is higher than the frosting threshold.
  • a temperature value such as 0 ° C
  • the frost that condenses inside the indoor unit will gradually melt and drip, thereby separating the frost from the indoor heat exchanger.
  • the control method in this paper is to control the flow direction of the refrigerant defined by the heating mode in the indoor heat exchanger defrosting stage, and realize the indoor heat exchanger by adjusting the operating parameters of components such as compressor, fan and throttling device. The defrosting operation.
  • the low temperature refrigerant can be
  • the temperature of the outdoor heat exchanger is lowered, when the temperature inside the outdoor unit is lower than the critical temperature of the condensation (for example, 0 ° C), the water vapor flowing through the air of the outdoor unit gradually condenses into frost inside the outdoor unit. In this way, the ice condensation of the outdoor heat exchanger is achieved while the indoor heat exchanger is subjected to ice melting and defrosting.
  • the indoor heat exchanger completes the melting ice defrosting in the indoor heat exchanger defrosting stage
  • the self-cleaning of the indoor heat exchanger is completed
  • the air conditioner enters the outdoor heat exchanger defrosting stage.
  • the control air conditioner is redefined by the cooling mode.
  • the flow of the refrigerant flows, and the flow direction of the high-temperature refrigerant discharged from the compressor changes, first flowing through the outdoor heat exchanger, so that the heat of the high-temperature refrigerant can be utilized to realize the ice melting and defrosting of the outdoor heat exchanger, and the outdoor heat exchanger is completed. Self-cleaning process.
  • each stage can be carried out according to a preset length of time.
  • the indoor heat exchanger frosting stage can be preset to 10 min
  • the indoor heat exchanger defrosting stage ie, the outdoor heat exchanger frosting
  • the stage is preset to 12 minutes
  • the outdoor heat exchanger defrosting stage is preset to 5 minutes.
  • the timing of the indoor unit or the outdoor unit may be cleared and the timing may be restarted, for example, self-cleaning in the indoor heat exchanger defrosting stage in the air conditioner.
  • the main cleaning object at this time is the indoor heat exchanger, and if the user incorrectly issues an instruction to clean the outdoor heat exchanger at this time, the timing of the indoor unit will be cleared and the timing will be restarted.
  • the outdoor unit is The timing is not clear, which leads to errors in the timing of the indoor and outdoor units during the subsequent cleaning process, which leads to deviations in the state of the indoor and outdoor fans, which affects the self-cleaning efficiency of the air conditioner.
  • the present invention provides a control method and device for self-cleaning of an air conditioner, aiming at avoiding the problem that the self-cleaning state of the indoor and outdoor machines is not matched due to user misoperation.
  • FIG. 1 is a flow chart of a self-cleaning control method herein, according to an exemplary embodiment.
  • the main flow of the self-cleaning control method is as follows:
  • the air conditioner controls to enter the self-cleaning mode when the condition that self-cleaning is required is met;
  • the above self-testing program preset by the air conditioner herein is not limited to the determination of the parameter of the temperature change amount, and the other manners of the air conditioner that can trigger the air conditioner to operate the self-cleaning mode can also be applied to the step S101 herein.
  • the air-conditioning self-cleaning object generally includes an indoor heat exchanger and an outdoor heat exchanger.
  • the current target heat exchanger is an indoor heat exchanger
  • the non-current target heat exchanger generally refers to an outdoor heat exchanger
  • the non-current target heat exchanger generally refers to an indoor heat exchanger.
  • the air conditioner flows in a flow direction defined by the cooling mode, and the current target cleaning heat exchanger is An indoor heat exchanger, and if a self-cleaning command is received at this stage to clean the outdoor heat exchanger (ie, the non-current target heat exchanger in this state), the flow direction of the refrigerant defined by the self-cleaning command is the flow direction of the heating mode.
  • a self-cleaning command is received at this stage to clean the outdoor heat exchanger (ie, the non-current target heat exchanger in this state)
  • the flow direction of the refrigerant defined by the self-cleaning command is the flow direction of the heating mode. This will cause the timing of the indoor heat exchanger to be cleared and restarted, and the timing of the outdoor unit will not be cleared. This will make the operating conditions of the indoor and outdoor units inconsistent and affect the self-cleaning efficiency.
  • the heat exchanger in the condensation process is generally used as the current target heat exchanger, such as an indoor heat exchanger.
  • the indoor heat exchanger in the frosting stage is the current target heat exchanger
  • the outdoor heat exchanger in the indoor heat exchanger defrosting stage is the current target heat exchanger.
  • the total length of the compressor in the self-cleaning phase is the total duration of the self-cleaning process. Therefore, combined with the preset duration of the air conditioner at different stages of the self-cleaning process, the air conditioner can be judged according to the cumulative running time of the compressor for the current target heat exchanger.
  • the cleaning progress for example, the preset time of the indoor heat exchanger condensation stage of the air conditioner is 10 min. Therefore, when the cumulative running time of the compressor is 5 min, it can be determined that the cleaning progress of the current target heat exchanger has been completed half; In the accumulated running time of 10 min, it can be determined that the cleaning progress of the current target heat exchanger has been completed.
  • step S103 determining whether the cumulative running time of the compressor is greater than or equal to a preset duration threshold, if yes, proceeding to step S104, if not, executing step S105;
  • the air conditioner is pre-set with a plurality of duration thresholds.
  • the preset duration of the air conditioner is 10 minutes, and the preset duration threshold is 7.5min, that is, during the indoor heat exchanger condensation stage, when the cumulative running time of the compressor is more than 7.5min, it indicates that the indoor heat exchanger's frosting progress has been completed 75%, and the indoor heat exchanger frosting stage has been completed.
  • the completion progress is relatively large, and the self-cleaning condensation operation of the indoor heat exchanger should be continued to avoid the problem that the self-cleaning time caused by the re-time cleaning is too long; and when the cumulative running time of the compressor is less than 7.5 min
  • the progress of the self-cleaning is less than 75%, and the completed progress of the self-cleaning of the indoor heat exchanger is not as expected, and can be switched to the non-current target heat exchanger (ie, the state) Self-cleaning operation of the outdoor heat exchanger.
  • the completed progress of the outdoor heat exchanger defrosting stage is relatively large, and the self-cleaning defrosting operation of the indoor heat exchanger should be continued, that is, the self-cleaning condensing operation of the outdoor heat exchanger should be continued;
  • the cumulative running time of the compressor is less than 16 min, it indicates that the self-cleaning defrosting completion progress of the indoor heat exchanger (the self-cleaning frosting completion progress of the outdoor heat exchanger) is less than 50%, and the indoor heat exchanger is The self-cleaning completed progress is not as expected and can be switched to a self-cleaning operation for a non-current target heat exchanger (ie, an indoor heat exchanger in this state).
  • the air conditioner can clean the self-cleaning process of the non-current target heat exchanger (ie, new
  • the target heat exchanger corresponding to the self-cleaning instruction can also achieve the purpose of speeding up the self-cleaning efficiency of the air conditioner and reducing the time occupied by the air conditioner in the self-cleaning process.
  • the self-cleaning control method of the present invention can determine whether to continue the cleaning process for the current target heat exchanger according to the cumulative running time of the compressor during the execution of the self-cleaning process of the air conditioner to ensure the cleaning of the current target heat exchanger.
  • the effect is that the self-cleaning process is prevented from being too long, and the self-cleaning state of the indoor and outdoor machines caused by the user's misoperation is effectively avoided.
  • the air conditioner when the air conditioner satisfies the condition that self-cleaning is required, the air conditioner enters a self-cleaning mode, and the indoor unit and the outdoor unit of the air conditioner start timing respectively; when the duration of the indoor unit and the outdoor unit reaches a preset cleaning time, the control is performed. The air conditioner exits the self-cleaning mode.
  • the indoor heat exchanger frosting stage is preset to 10 min
  • the indoor heat exchanger defrosting stage ie, the outdoor heat exchanger frosting stage
  • the outdoor heat exchanger is defrost stage.
  • the preset is 5min. Therefore, when the timing of the indoor unit and the outdoor unit reaches the cleaning time of 27 minutes, it can be determined that the indoor heat exchanger and the outdoor heat exchanger have completed self-cleaning, and the air conditioner can exit the self-cleaning mode.
  • the preset cleaning duration is the sum of the durations of the different stages of the preset.
  • the air conditioner is further provided with the first cleaning duration and the second cleaning duration.
  • the cleaning time is long; when the timing of cleaning the current target heat exchanger reaches the first cleaning time, the air conditioner is controlled to perform a self-cleaning process for cleaning the non-current target heat exchanger, and the second cleaning time is continued.
  • the outdoor heat exchanger is the current target heat exchanger of the self-cleaning process, and the cleaning time of the entire cleaning process of the outdoor heat exchanger is the first cleaning time, if Receiving the self-cleaning instruction of the clean indoor heat exchanger during the cleaning process, but satisfying the condition of performing step S104 in step S103, the outdoor heat exchanger is still cleaned until the first cleaning time is reached; after that, switching to the pair The self-cleaning operation of the indoor heat exchanger, the self-cleaning time is the second cleaning time.
  • the indoor unit and the outdoor unit continue to count to ensure the consistency of the timing time and prevent indoor and outdoor.
  • the problem that the operating state is not adapted due to the timing of the timing is not synchronized.
  • the non-current target heat exchanger corresponding to the new self-cleaning command may be defined as the first target heat exchanger, and the previous current The target heat exchanger is the second target heat exchanger, so that the air conditioner first switches to clean the first target heat exchanger, and then re-cleans the second target heat exchanger.
  • FIG. 2 is a block diagram showing the structure of a self-cleaning control device herein, according to an exemplary embodiment.
  • the present invention also provides a self-cleaning control device for an air conditioner, which can be used to control an air conditioner to perform the self-cleaning process in the foregoing various embodiments.
  • the control device includes:
  • the entering unit 201 is configured to control, when the air conditioner meets the condition that self-cleaning is required, to enter the self-cleaning mode;
  • the obtaining unit 202 is configured to acquire, when the air conditioner receives the self-cleaning instruction for cleaning the non-current target heat exchanger, the cumulative running time of the compressor in the self-cleaning mode;
  • the executing unit 203 is configured to control the air conditioner to continue performing the self-cleaning process of cleaning the current target heat exchanger when the accumulated running time is greater than or equal to the preset duration threshold.
  • the execution unit is further configured to: 203: control the air conditioner to perform a self-cleaning process of cleaning the non-current target heat exchanger when the accumulated operating time is less than a preset duration threshold.
  • control device further includes a timing unit and an exit unit, wherein the timing unit is configured to: when the air conditioner enters the self-cleaning mode, the indoor unit and the outdoor unit of the air conditioner start timing respectively; and the exit unit is used to: when the indoor unit and When the duration of the outdoor unit's timing reaches the preset cleaning time, the air conditioner is controlled to exit the self-cleaning mode.
  • timing unit is configured to: when the air conditioner enters the self-cleaning mode, the indoor unit and the outdoor unit of the air conditioner start timing respectively; and the exit unit is used to: when the indoor unit and When the duration of the outdoor unit's timing reaches the preset cleaning time, the air conditioner is controlled to exit the self-cleaning mode.
  • the timing unit is further configured to: when the air conditioner continues to perform the self-cleaning process of cleaning the current target heat exchanger, the indoor unit and the outdoor unit continue to time.

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Abstract

一种空调自清洁的控制方法,该控制方法包括:空调在满足需要自清洁的条件时,控制进入自清洁模式;当空调接收到清洁非当前目标换热器的自清洁指令时,获取压缩机的在自清洁模式中的累计运行时长;当累计运行时长大于或等于预设的时长阈值时,控制空调继续执行清洁当前目标换热器的自清洁流程。还提供了一种应用该空调自清洁控制方法的控制装置。该自清洁控制方法可以保证对当前目标换热器的清洁效果,防止自清洁流程时间过长,并可有效避免因用户误操作而造成的室内、外机的自清洁状态不匹配的问题。

Description

一种空调自清洁的控制方法及装置
本申请基于申请号为201710748673.9、申请日为2017.08.28的中国专利申请提出,并要求该中国专利申请的优先权,该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本文涉及空调技术领域,特别是涉及一种空调自清洁的控制方法及装置。
背景技术
空调的室内机以制冷或制热模式运行时,室内环境中的空气沿室内机的进风口进入室内机的内部,并在换热片换热后经由出风口重新吹入室内环境中,在这一过程中,室内空气中所夹杂的灰尘、大颗粒物等杂质也会随着进风气流进入室内机内部,虽然室内机进风口处所装设的防尘滤网可以过滤大部分的灰尘及颗粒物,但是仍会有少量的微小灰尘无法被完全阻挡过滤,随着空调的长期使用,这些灰尘会逐渐沉积附着在换热片的表面,由于覆盖着换热器外表面的灰尘导热性较差,其会直接影响到换热片与室内空气的热交换,因此,为了保证室内机的换热效率,需要定期对室内机作清洁处理。
一般的,现有技术中空调室内机的清洁方法主要包括人工清理和空调自清洁两种方式,其中,空调自清洁的方式主要分为凝霜阶段和化霜阶段,其中,在凝霜阶段,空调先以制冷模式运行,并加大对室内换热器的冷媒输出量,从而使室内空气中的水分可以逐渐在换热器的外表面凝结成霜或冰层,这一过程中,凝结的冰霜层可以与灰尘向结合,从而将灰尘从换热器外表面剥离;之后,在化霜阶段,空调以制热模式运行,使换热器外表面所凝结的冰霜层融化,灰尘也会随着融化的水流汇集至接水盘中,这样,就可以实现对空调的自清洁目的。
为了保证室外机的清洁度,现有的部分空调机型还将上述的自清洁方式应用到对室外换热器的清洁,因此,这些空调用户可按照自己的需要先后对室内机和室外机进行清洁。但是,如果在空调的清洁过程中用户错误的发出与当前清洁状态不相配的指令时,则可能导致室内、外机的运行状态不同步,导致自清洁流程的整体占用时间过长,影响空调的自清洁效率。
发明内容
本文提供了一种空调自清洁的控制方法及装置,旨在避免出现由于用户误操作而造成的室内、外机的自清洁状态不匹配的问题。为了对披露的实施例的一些方面有一个基本的理解,下面给出了简单的概括。该概括部分不是泛泛评述,也不是要确定关键/重要组成元素或描绘这些实施例的保护范围。其唯一目的是用简单的形式呈现一些概念,以此作为后面的详细说明的序言。
根据本文的第一个方面,提供了一种空调自清洁的控制方法,控制方法包括:空调在满足需要自清洁的条件时,控制进入自清洁模式;当空调接收到清洁非当前目标换热器的自清洁指令时,获取压缩机的在自清洁模式中的累计运行时长;当累计运行时长大于或等于预设的时长阈值时,控制空调继续执行清洁当前目标换热器的自清洁流程。
进一步的,控制方法还包括:当累计运行时长小于预设的时长阈值时,控制空调执行清洁非当前目标换热器的自清洁流程。
进一步的,控制方法还包括:当空调进入自清洁模式时,空调的室内机和室外机分别开始计时;当室内机和室外机计时的时长均达到预设的清洁时长时,控制空调退出自清洁模式。
进一步的,清洁时长包括第一清洁时长和第二清洁时长;控制方法还包括:当清洁当前目标换热器的计时时长达到第一清洁时长时,控制空调执行清洁非当前目标换热器的自清洁流程,且持续第二清洁时长。
进一步的,控制方法还包括:在空调继续执行清洁当前目标换热器的自清洁流程时,室内机和所述室外机继续计时。
根据本文的第二个方面,还提供了一种空调自清洁的控制装置,控制装置包括:进入单元,用于空调在满足需要自清洁的条件时,控制进入自清洁模式;获取单元,用于当空调接收到清洁非当前目标换热器的自清洁指令时,获取压缩机的在自清洁模式中的累计运行时长;执行单元,用于当累计运行时长大于或等于预设的时长阈值时,控制空调继续执行清洁当前目标换热器的自清洁流程。
进一步的,执行单元还用于:当累计运行时长小于预设的时长阈值时,控制空调执行清洁非当前目标换热器的自清洁流程。
进一步的,控制装置还包括计时单元和退出单元,其中,计时单元用于:当空调 进入自清洁模式时,空调的室内机和室外机分别开始计时;退出单元用于:当室内机和室外机计时的时长均达到预设的清洁时长时,控制空调退出自清洁模式。
进一步的,清洁时长包括第一清洁时长和第二清洁时长;执行单元还用于:当清洁当前目标换热器的计时时长达到第一清洁时长时,控制空调执行清洁非当前目标换热器的自清洁流程,且持续第二清洁时长。
进一步的,计时单元还用于:在空调继续执行清洁当前目标换热器的自清洁流程时,室内机和所述室外机继续计时。
本文的自清洁控制方法可以在空调执行自清洁流程的过程中,根据压缩机的累计运行时长判断是否继续针对当前目标换热器进行清洁处理,以保证对该当前目标换热器的清洁效果,防止自清洁流程时间过长,并可有效避免因用户误操作而造成的室内、外机的自清洁状态不匹配的问题。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本文。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本文的实施例,并与说明书一起用于解释本文的原理。
图1是根据一示例性实施例所示出的本文自清洁控制方法的流程图;
图2是根据一示例性实施例所示出的本文自清洁控制装置的结构框图。
具体实施方式
以下描述和附图充分地示出本文的具体实施方案,以使本领域的技术人员能够实践它们。其他实施方案可以包括结构的、逻辑的、电气的、过程的以及其他的改变。实施例仅代表可能的变化。除非明确要求,否则单独的部件和功能是可选的,并且操作的顺序可以变化。一些实施方案的部分和特征可以被包括在或替换其他实施方案的部分和特征。本文的实施方案的范围包括权利要求书的整个范围,以及权利要求书的所有可获得的等同物。在本文中,各实施方案可以被单独地或总地用术语“发明”来表示,这仅仅是为了方便,并且如果事实上公开了超过一个的发明,不是要自动地限制该应用的范围为任何单个发明或发明构思。本文中,诸如第一和第二等之类的关系术语仅仅用于将一个实体或者操作与另一个实体或操作区分开来,而不要求或者暗示 这些实体或操作之间存在任何实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法或者设备中还存在另外的相同要素。本文中各个实施例采用递进的方式描述,每个实施例重点说明的都是与其他实施例的不同之处,各个实施例之间相同相似部分互相参见即可。对于实施例公开的方法、产品等而言,由于其与实施例公开的方法部分相对应,所以描述的比较简单,相关之处参见方法部分说明即可。
本文的空调包括室内换热器、室外换热器、节流装置和压缩机,室内换热器、室外换热器、节流装置和压缩机通过冷媒管路连接构成冷媒循环回路,冷媒通过冷媒循环回路沿不同运行模式所设定的流向流动,实现其制热、制冷和自清洁等功能。
在实施例中,本文空调的运行模式包括制冷模式、制热模式和自清洁模式,其中,制冷模式一般应用在夏季高温工况,用于降低室内环境温度;制热模式一般应用在冬季低温工况,用于提升室内环境温度;而自清洁模式则一般为用户的自选功能模式或者自启动功能,可以在换热器上积聚的灰尘、污垢较多的情况,对换热器进行自动清洁操作。
空调运行制冷模式时所设定的冷媒流向是压缩机排出的高温冷媒先流经室外换热器与室外环境换热,之后在流入室内换热器与室内环境进行换热,最后冷媒回流至压缩机重新进行压缩操作;这一过程中,流经室外换热器的冷媒向室外环境放出热量,流经室内换热器的冷媒从室内环境中吸收热量,通过冷媒在冷媒循环回路中的循环流动,可以持续的将室内的热量排出到室外环境中,从而可以达到降低室内环境温度的制冷目的。
而在制热模式运行时所设定的冷媒流向指压缩机排出的高温冷媒先流经室内换热器与室外环境换热,之后在流入室外换热器与室内环境进行换热,最后冷媒回流至压缩机重新进行压缩操作;这一过程中,流经室内换热器的冷媒向室内环境放出热量,流经室外换热器的冷媒从室外环境中吸收热量,通过冷媒在冷媒循环回路中的循环流动,可以持续的将室外的热量释放到室内环境中,从而可以达到提高室内环境温度的制热目的。
一般的,由于室内换热器是直接用于改变室内温度环境的换热器,室内换热器的 清洁程度可以直接影响到用户的使用体验。因此,本文空调的自清洁模式的主要应用对象为室内换热器。同时,本文的空调的自清洁模式还可以用于对室外换热器进行清洁,因此,在具体实施例中,本文空调执行清洁流程时,是先后对室内换热器和室外换热器进行清洁的流程,例如,先对室内换热器进行清洁,再对室外换热器进行清洁;或者,先对室外换热器进行清洁,再对室内换热器进行清洁。应当理解的是,如果现有空调采用与本文相同或相近的控制方法对室内、外换热器进行自清洁操作,则应当也包含在本文的保护范围之内。
以先进行室内换热器清洁,再进行室外换热器清洁的流程为例,本文空调运行自清洁模式时的工作流程主要包括依序进行的三个阶段:室内换热器凝霜阶段、室内换热器化霜阶段(也即室外换热器凝霜阶段)、室外换热器化霜阶段,其中,在室内换热器凝霜阶段,室内机的室内换热器上可凝冰结霜;在室内换热器化霜阶段,室内换热器在前一凝霜阶段所凝结的冰霜融化,灰尘等杂质即可随融化的冷凝水从室内换热器上脱离,室内换热器的清洁处理完成;同时,室内换热器化霜阶段也是室外换热器凝霜阶段,室外机的室外换热器上可凝冰结霜;在室外换热器化霜阶段,室外换热器上所凝结的冰霜融化,灰尘等杂质即可随融化的冷凝水从室外换热器上脱离,室外换热器的清洁处理完成。
具体的,空调在制冷模式运行过程中,如果通过压缩机的功率提高,冷媒输出量增加等方式,可以提高输入室内机的低温冷媒量,多余的冷媒冷量可以使室内机的内部温度下降,在室内机内部的温度低于凝霜临界温度值(如0℃)时,流经室内机的空气中的水汽就会逐渐在室内机内部凝结成冰霜,因此,本文控制方法即是在室内换热器凝霜阶段控制空调以制冷模式所限定的冷媒流向的情况下,通过对压缩机、风机、节流装置等部件运行参数的调整,实现室内换热器的凝冰结霜操作。
而空调在制热模式运行过程中,由于高温冷媒是先流经室内换热器,因此可以高温冷媒的冷量可以使室内机的内部温度升高,在室内机内部的温度高于凝霜临界温度值(如0℃)时,凝结在室内机内部的冰霜会逐渐融化滴落,从而可以使冰霜与室内换热器分离。本文控制方法即是在室内换热器化霜阶段控制空调以制热模式所限定的冷媒流向的情况下,通过对压缩机、风机、节流装置等部件运行参数的调整,实现室内换热器的化霜操作。
同时,空调以制热模式所限定的冷媒流向流动时,流出室内换热器的为中、高温冷媒,而经过节流装置节流之后流入室外换热器的为低温冷媒,因此,低温冷媒可以 降低室外换热器的温度,在室外机内部的温度低于凝霜临界温度值(如0℃)时,流经室外机的空气中的水汽就会逐渐在室外机内部凝结成冰霜。这样,即在在对室内换热器进行融冰化霜的同时,实现室外换热器的凝冰结霜。
之后,室内换热器在室内换热器化霜阶段完成融冰化霜,室内换热器的自清洁完成,空调进入室外换热器化霜阶段,此时,控制空调重新以制冷模式所限定的冷媒流向流动,压缩机排出的高温冷媒的流向改变,先流经室外换热器,这样,即可利用高温冷媒的热量实现室外换热器的融冰化霜,并完成室外换热器的自清洁过程。
在上述自清洁过程,每一阶段均可以按照预设的时长进行,例如,可以将室内换热器凝霜阶段预设为10min、室内换热器化霜阶段(也即室外换热器凝霜阶段)预设为12min、室外换热器化霜阶段预设为5min,这样,在空调进入自清洁模式的室内换热器凝霜阶段之后,空调可以开启计时,在达到10min时,空调进入室内换热器化霜阶段,在室内换热器化霜阶段持续12min之后,空调进入室外换热器化霜阶段,在室外换热器化霜阶段持续5min之后,可判定室内、外机的自清洁均已完成,空调退出自清洁模式。
由于空调切换至以制冷模式或制热模式所限定的流向的过程中,室内、外机的风机的开/闭以及转速也需要进行相应的控制,例如,在室内换热器凝霜阶段的室内风机一般是关闭或者低速运行,室外风机则开启运行;而在室内换热器化霜阶段,室内风机则是开启运行,室外风是关闭或者低速运行。因此,室内、外机在自清洁过程中一般是分别计时的,并可在达到预设的时长时,控制空调的风机等部件进行相应的状态切换。而如果在自清洁过程中,用户重新输入了新的自清洁指令,则可能导致室内机或者室外机的计时清零并重新开始计时,例如,在空调进行室内换热器化霜阶段的自清洁操作时,此时主要清洁的对象为室内换热器,而如果此时用户误发出清洁室外换热器的指令,则会导致室内机的计时清零并重新开始计时,此时,室外机的计时不清零,这就导致在后续的清洁过程中,室内、外机的计时时长存在误差,进而导致室内、外风机的状态切换偏差,影响空调的自清洁效率。
因此,针对上述可能存在的问题,本文提供了一种空调自清洁的控制方法及装置,旨在避免出现由于用户误操作而造成的室内、外机的自清洁状态不匹配的问题。
图1是根据一示例性实施例所示出的本文自清洁控制方法的流程图。在图1所示的应用场景中,本文自清洁控制方法的主要流程如下:
S101、空调在满足需要自清洁的条件时,控制进入自清洁模式;
在一实施例中,空调满足需要自清洁的条件为接收到用户向空调业发出的自清洁指令。具体的,用户在需要对室内机和/或室外机进行清洁时,可通过遥控器或者控制面板选择预置的自清洁选项,并确定;遥控器或者控制面板向空调器的主控制器发送自清洁指令,空调器的主控制器在接收到自清洁指令之后,即可控制空调进入自清洁模式;
在另一实施例中,空调可通过预设的自检测程序判断是否需要自清洁,例如,空调可检测单位时间内室内机的出风气流的温度变化量,由于灰尘等杂质会降低室内换热器与气流之间的热交换效率,因此,如果在单位时间内的出风气流的温度变化量低于预设的温度变化量,则可判定室内换热器上积聚的灰尘过多,影响室内换热器的换热效率,此时,空调即满足需要自清洁的条件,空调可自启动进入自清洁模式。
应当理解的是,本文空调所预设的上述自检测程序并不限于针对温度变化量这一参数进行判断,空调其它的可触发空调运行自清洁模式的方式也可以应用于本文的步骤S101中。
S102、当空调接收到清洁非当前目标换热器的自清洁指令时,获取压缩机的在自清洁模式中的累计运行时长;
在实施例中,空调自清洁的对象一般包括室内换热器和室外换热器,则当前目标换热器为室内换热器时,非当前目标换热器一般是指室外换热器;而当当前目标换热器为室外换热器时,非当前目标换热器一般是指室内换热器。
因此,空调接到到清洁非当前目标换热器的自清洁指令一般是指该新的自清洁指令所指示的空调的运行状态,与空调清洁当前目标换热器的运行状态不一致,在这种情况下,就可能导致出现室内机或室外机的计时清零的问题。
例如,在前述的先清洁室内换热器再清洁室外换热器的自清洁流程中,在室内换热器凝霜阶段,空调是以制冷模式所限定的流向流动,当前目标清洁换热器为室内换热器,而如果在这个阶段接收到清洁室外换热器(即该状态下的非当前目标换热器)的自清洁指令,该自清指令所限定的冷媒流向为制热模式的流向,这就会导致室内换热器的计时清零且重新开始计时,而室外机的计时则不会清零,这就使得室内、外机的运行状态不一致,影响自清洁效率。
或者,在室内换热器化霜阶段,空调是以制热模式所限定的流向流动,当前目标清洁换热器为室外换热器,而如果在这个阶段接收到清洁室内换热器(即该状态下的非当前目标换热器)的自清洁指令,该自清洁指令所限定的冷媒流向为制冷模式的流 向,这就会导致室外换热器的计时清零且重新开始计时,而室内机的计时则不会清零,同样会导致室内、外机的运行状态不一致。
应当理解的是,为了便于区分不同自清洁阶段的当前目标换热器和非当前目标换热器,本文一般将处于凝霜过程中的换热器作为当前目标换热器,如室内换热器凝霜阶段的室内换热器为当前目标换热器,室内换热器化霜阶段的室外换热器为当前目标换热器。
压缩机在自清洁阶段的总时长即为自清洁流程的总时长,因此,结合空调在自清洁流程的不同阶段的预设时长,可根据压缩机的累计运行时长判断空调针对当前目标换热器的清洁进度,例如,空调预设的室内换热器凝霜阶段的预设时长为10min,因此在压缩机的累计运行时长为5min时,可判定当前目标换热器的清洁进度已完成一半;而在累计运行时长为10min中,可判定当前目标换热器的清洁进度已经完成。这样,可以进一步根据所判断的当前目标换热器的清洁进度判断是否要执行新自清洁指令,或者仍执行原自清洁指令,以保证空调的自清洁过程不会占用太多时间。
S103、判断压缩机的累计运行时长是否大于或等于预设的时长阈值,如果是,则执行步骤S104,如果否,则执行步骤S105;
在本实施例中,针对自清洁阶段的不同预设时长,空调预设有多个时长阈值,例如,对于室内换热器凝霜阶段,空调的预设时长为10min,预设的时长阈值为7.5min,即,在室内换热器凝霜阶段过程中,压缩机的累计运行时长大于7.5min时,说明室内换热器的凝霜进度已完成75%,室内换热器凝霜阶段的已完成进度占比较大,应继续对室内换热器进行自清洁的凝霜操作,以避免重新计时清洁所导致的自清洁时间耗时过长的问题;而当压缩机的累计运行时长小于7.5min的情况下,说明室内换热器的自清洁的凝霜完成进度小于75%,室内换热器自清洁的已完成进度未达到预期,可以切换为针对对非当前目标换热器(即该状态下的室外换热器)的自清洁操作。
同理,在实施例中,对于室内换热器化霜阶段,空调的预设时长为12min,预设的时长阈值为16min,即,在室内换热器化霜阶段过程中,室内、外机的计时时长为室内换热器凝霜阶段的10min,加上室内换热器化霜阶段的持续时长,当压缩机的累计运行时长超过16min时,则说明室内换热器的化霜季度已完成50%,室外换热器化霜阶段的已完成进度占比较大,应继续对室内换热器进行自清洁的化霜操作,也即继续执行对室外换热器进行自清洁的凝霜操作;而当压缩机的累计运行时长小于16min的情况下,说明室内换热器的自清洁的化霜完成进度(室外换热器的自清洁的凝霜完 成进度)小于50%,室内换热器的自清洁的已完成进度未达到预期,可以切换为针对非当前目标换热器(即该状态下的室内换热器)的自清洁操作。
应当理解的是,室内换热器凝霜阶段预设的时长阈值并不限于7.5min,室内换热器化霜阶段预设的时长阈值也不限于16min,本领域技术人员可以根据实际需要进行设置,本文对此不作限定。
S104、控制空调继续执行清洁当前目标换热器的自清洁流程。
在累计运行时长大于或等于预设的时长阈值时,可判定该当前目标换热器的自清洁流程的当前阶段的完成进度已较大,空调应继续执行清洁当前目标换热器的自清洁流程,以保证优先完成当前目标换热器的自清洁,从而减少空调自清洁过程中的时间占用,避免空调因执行不同自清洁指令所造成的自清洁时间过长的问题。
S105、控制空调执行清洁非当前目标换热器的自清洁流程。
在累计运行时长小于预设的时长阈值时,可判定该当前目标换热器的自清洁流程的当前阶段的完成进度较小,空调可执行清洁非当前目标换热器的自清洁流程(即新的自清洁指令所对应的目标换热器),同样可以达到加快空调自清洁效率,减少空调自清洁过程中的时间占用的目的。
这样,本文的自清洁控制方法可以在空调执行自清洁流程的过程中,根据压缩机的累计运行时长判断是否继续针对当前目标换热器进行清洁处理,以保证对该当前目标换热器的清洁效果,防止自清洁流程时间过长,并可有效避免因用户误操作而造成的室内、外机的自清洁状态不匹配的问题。
在实施例,空调在满足需要自清洁的条件时,空调进入自清洁模式,空调的室内机和室外机分别开始计时;当室内机和室外机计时的时长均达到预设的清洁时长时,控制空调退出自清洁模式。
例如,在本实施例中,室内换热器凝霜阶段预设为10min、室内换热器化霜阶段(也即室外换热器凝霜阶段)预设为12min、室外换热器化霜阶段预设为5min,因此,在室内机和室外机的计时时长均达到清洁时长27min时,可判定室内换热器和室外换热器均已完成自清洁,空调即可退出自清洁模式。其中,预设的清洁时长即为上述预设的不同阶段的时长之和。
另外,针对室内换热器和室外换热器独立执行自清洁流程中接收到清洁非当前目标换热器的自清洁指令的情况,空调还预设有包括第一清洁时长和第二清洁时长的清洁时长;当清洁当前目标换热器的计时时长达到第一清洁时长时,控制空调执行清洁 非当前目标换热器的自清洁流程,且持续第二清洁时长。
例如,在空调单独清洁室外换热器的过程中,室外换热器即为该自清洁流程的当前目标换热器,室外换热器的整个清洁流程的清洁时长为第一清洁时长,如果在清洁过程中接收到清洁室内换热器的自清洁指令,但是满足步骤S103中执行步骤S104的条件,则仍继续对室外换热器进行清洁,直至达到第一清洁时长;之后,再切换为对室内换热器的自清洁操作,其自清洁时长为第二清洁时长。
为了保持室内外机的计时时刻的同步,在步骤S104空调继续执行清洁当前目标换热器的自清洁流程时,室内机和所述室外机继续计时,以保证计时时间的连贯性,防止室内外机因计时时刻不同步所导致的的运行状态不适配的问题。
较佳的,在步骤S105空调执行清洁非当前目标换热器的自清洁流程之后,新的自清洁指令所对应的非当前目标换热器可以定义为第一目标换热器,则前一当前目标换热器则为第二目标换热器,这样,空调先切换清洁第一目标换热器,之后,再重新对第二目标换热器进行清洁。
例如,在一空调的自清洁流程中,空调先对室内换热器进行清洁,之后,再对室外换热器清洁,在对室内换热器(即该流程中的当前目标换热器)进行清洁时,接收到清洁室外换热器(即该流程中的非当前目标换热器)的自清洁指令,如果满足步骤S103中执行步骤S105的判断条件,则空调切换为清洁室外换热器,此时,室外换热器为第一目标换热器,室内换热器为第二目标换热器。这样,在室外换热器清洁完成之后,再重新对室内换热器进行清洁,从而实现室内、外机均自清洁的目的。
这里,当空调执行对非当前目标换热器的清洁操作时,室内机和室外机的计时时长均清零并重新开始计时,并根据此时的当前目标换热器的不同自清洁阶段,确定不同自清洁阶段的预设时长以及时长阈值,以与新的自清洁顺序向适配,保证空调再一次接收到清洁非当前目标换热器的自清洁指令时,可以准确判断压缩机的累计时长和预设的时长阈值之间的大小关系。
图2是根据一示例性实施例所示出的本文自清洁控制装置的结构框图。
如图2所示,本文还提供了一种空调自清洁的控制装置,可用于控制空调执行前述多个实施例中的自清洁流程,具体的,控制装置包括:
进入单元201,用于空调在满足需要自清洁的条件时,控制进入自清洁模式;
获取单元202,用于当空调接收到清洁非当前目标换热器的自清洁指令时,获取压缩机的在自清洁模式中的累计运行时长;
执行单元203,用于当累计运行时长大于或等于预设的时长阈值时,控制空调继续执行清洁当前目标换热器的自清洁流程。
在实施例中,执行单元还用于203:当累计运行时长小于预设的时长阈值时,控制空调执行清洁非当前目标换热器的自清洁流程。
在实施例中,控制装置还包括计时单元和退出单元,其中,计时单元用于:当空调进入自清洁模式时,空调的室内机和室外机分别开始计时;退出单元用于:当室内机和室外机计时的时长均达到预设的清洁时长时,控制空调退出自清洁模式。
在实施例中,清洁时长包括第一清洁时长和第二清洁时长;执行单元203还用于:当清洁当前目标换热器的计时时长达到第一清洁时长时,控制空调执行清洁非当前目标换热器的自清洁流程,且持续第二清洁时长。
在实施例中,计时单元还用于:在空调继续执行清洁当前目标换热器的自清洁流程时,室内机和所述室外机继续计时。
应当理解的是,本文并不局限于上面已经描述并在附图中示出的流程及结构,并且可以在不脱离其范围进行各种修改和改变。本文的范围仅由所附的权利要求来限制。

Claims (10)

  1. 一种空调自清洁的控制方法,其特征在于,所述控制方法包括:
    所述空调在满足需要自清洁的条件时,控制进入自清洁模式;
    当所述空调接收到清洁非当前目标换热器的自清洁指令时,获取所述压缩机的在自清洁模式中的累计运行时长;
    当所述累计运行时长大于或等于预设的时长阈值时,控制所述空调继续执行清洁当前目标换热器的自清洁流程。
  2. 根据权利要求1的控制方法,其特征在于,所述控制方法还包括:
    当所述累计运行时长小于预设的所述时长阈值时,控制所述空调执行清洁所述非当前目标换热器的自清洁流程。
  3. 根据权利要求1或2所述的控制方法,其特征在于,所述控制方法还包括:
    当所述空调进入自清洁模式时,所述空调的室内机和室外机分别开始计时;
    当室内机和室外机计时的时长均达到预设的清洁时长时,控制所述空调退出所述自清洁模式。
  4. 根据权利要求3所述的控制方法,其特征在于,所述清洁时长包括第一清洁时长和第二清洁时长;
    所述控制方法还包括:
    当清洁所述当前目标换热器的计时时长达到所述第一清洁时长时,控制空调执行清洁所述非当前目标换热器的自清洁流程,且持续所述第二清洁时长。
  5. 根据权利要求1所述的控制方法,其特征在于,所述控制方法还包括:
    在所述空调继续执行清洁当前目标换热器的自清洁流程时,所述室内机和所述室外机继续计时。
  6. 一种空调自清洁的控制装置,其特征在于,所述控制装置包括:
    进入单元,用于所述空调在满足需要自清洁的条件时,控制进入自清洁模式;
    获取单元,用于当所述空调接收到清洁非当前目标换热器的自清洁指令时,获取所述压缩机的在自清洁模式中的累计运行时长;
    执行单元,用于当所述累计运行时长大于或等于预设的时长阈值时,控制所述空调继续执行清洁当前目标换热器的自清洁流程。
  7. 根据权利要求6的控制装置,其特征在于,所述执行单元还用于:
    当所述累计运行时长小于预设的所述时长阈值时,控制所述空调执行清洁所述非当前目标换热器的自清洁流程。
  8. 根据权利要求6或7所述的控制装置,其特征在于,所述控制装置还包括计时单元和退出单元,其中,
    所述计时单元用于:当所述空调进入自清洁模式时,所述空调的室内机和室外机分别开始计时;
    所述退出单元用于:当室内机和室外机计时的时长均达到预设的清洁时长时,控制所述空调退出所述自清洁模式。
  9. 根据权利要求8所述的控制装置,其特征在于,所述清洁时长包括第一清洁时长和第二清洁时长;
    所述执行单元还用于:
    当清洁所述当前目标换热器的计时时长达到所述第一清洁时长时,控制空调执行清洁所述非当前目标换热器的自清洁流程,且持续所述第二清洁时长。
  10. 根据权利要求8所述的控制装置,其特征在于,所述计时单元还用于:
    在所述空调继续执行清洁当前目标换热器的自清洁流程时,所述室内机和所述室外机继续计时。
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