WO2020187232A1 - Self-cleaning control method for air conditioner - Google Patents

Self-cleaning control method for air conditioner Download PDF

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WO2020187232A1
WO2020187232A1 PCT/CN2020/079909 CN2020079909W WO2020187232A1 WO 2020187232 A1 WO2020187232 A1 WO 2020187232A1 CN 2020079909 W CN2020079909 W CN 2020079909W WO 2020187232 A1 WO2020187232 A1 WO 2020187232A1
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air conditioner
indoor unit
air
self
heat exchanger
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PCT/CN2020/079909
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French (fr)
Chinese (zh)
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于洋
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青岛海尔空调器有限总公司
海尔智家股份有限公司
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Publication of WO2020187232A1 publication Critical patent/WO2020187232A1/en

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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
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • 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
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • 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
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • 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
    • F24F11/88Electrical aspects, e.g. circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00Details or features not otherwise provided for
    • F24F2221/22Cleaning ducts or apparatus

Definitions

  • the present invention provides a self-cleaning control method for an air conditioner.
  • the air conditioner includes an indoor unit and
  • the air blowing device of an indoor unit, the air conditioner self-cleaning control method includes the following steps: S110, making a blowing device blow air to the heat exchanger of the indoor unit; S120, detecting the concentration of dust blown by the blowing device; S130, Determine whether to run the self-cleaning mode according to the dust concentration.
  • the blowing device is a fan of the indoor unit
  • step S110 specifically includes: adjusting the rotation direction of the fan so that the fan is directed toward the indoor unit.
  • the heat exchanger blows.
  • step S130 specifically includes: when the dust concentration is greater than a preset value, making the air conditioner operate in a self-cleaning mode.
  • Fig. 1 is a main flow chart of the air conditioner self-cleaning control method of the present invention.
  • the blowing device may be the fan of the indoor unit.
  • the rotation direction of the fan can be adjusted to make the fan blow to the heat exchanger of the indoor unit;
  • the blowing device may be a detection fan set independently of the fan of the indoor unit, that is, a dedicated detection fan is installed separately for the indoor unit, and the detection fan can be activated to achieve the purpose of blowing to the heat exchanger of the indoor unit.
  • a dust sensor may be installed above the heat exchanger to detect the concentration of dust blown by the blowing device.
  • the detected dust concentration is greater than the preset value, it indicates that there is more dust on the heat exchanger, and at this time, the air conditioner is operated in the self-cleaning mode.
  • the preset value those skilled in the art can set it flexibly according to actual needs. For example, a critical value of dust concentration that affects the operating efficiency of the air conditioner can be obtained through experiments, and then a reasonable preset value of dust concentration can be determined according to the critical value.
  • the real-time pressure difference When the real-time pressure difference is greater than the standard pressure difference, it indicates that the indoor heat exchanger starts to appear dirty As the real-time pressure difference gradually increases, the dirty clogging of the indoor heat exchanger becomes more and more serious.
  • the preset pressure difference ⁇ standard pressure difference Those skilled in the art can select a reasonable preset pressure difference according to different test scenarios and different needs (the preset pressure difference ⁇ standard pressure difference).
  • the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, detecting the air volume of the air outlet of the indoor unit; When the air volume is lower than the preset air volume, the blowing device is then blown to the heat exchanger of the indoor unit.
  • the air outlet of the indoor unit the dirtier the indoor heat exchanger.
  • the dust concentration on the heat exchanger is combined to further determine whether the indoor heat exchanger is required to be dirty.
  • the timing of the self-cleaning of the filter is more accurate.
  • the above-mentioned preset air volume can be selected by a person skilled in the art according to actual conditions. For example, obtain the standard air flow rate of the indoor unit air outlet of the indoor heat exchanger without being dirty and clogged through the test method. When the real-time air flow rate is lower than the standard air flow rate, it means that the indoor heat exchanger starts to appear. Dirty blockage, as the real-time air volume gradually decreases, the dirty blockage of the indoor heat exchanger is getting more and more serious.
  • Those skilled in the art can choose a reasonable preset air volume according to different test scenarios and different needs (the preset air volume ⁇ standard air volume).
  • the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, detecting the current value of the fan of the indoor unit at the current speed; When the current value is lower than the preset current value, the air blowing device is then made to blow air to the heat exchanger of the indoor unit.
  • the air blowing device is then made to blow air to the heat exchanger of the indoor unit.
  • the air conditioner self-cleaning control method of the present invention may also perform the following steps: obtain the PM2.5 value of the indoor air; when the PM2.5 value is higher than the preset standard value , And then make the blowing device blow to the heat exchanger of the indoor unit.
  • PM2.5 value the indoor air quality
  • the indoor heat exchanger When the air quality is poor, the indoor heat exchange The organs get dirty quickly; when the air quality is good, the indoor heat exchanger gets dirty slowly. However, it may be a risk of misjudgment to judge whether the indoor heat exchanger is dirty or blocked from the parameter of PM2.5 value alone.
  • the air conditioner self-cleaning control method of the present invention may also perform the following steps: detecting the turbidity of the condensate when the heat exchanger of the indoor unit generates condensate; When the turbidity of the condensed water exceeds the preset standard value, the air blowing device is then made to blow air to the heat exchanger of the indoor unit.
  • the air blowing device is then made to blow air to the heat exchanger of the indoor unit.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

A self-cleaning control method for an air conditioner comprises the following steps: enabling a blowing device to blow air to a heat exchanger of the indoor unit; measuring the concentration of dust blown by the blowing device; and determining, according to the concentration of dust, whether to run a self-cleaning mode. Compared with directly detecting the dust on the heat exchanger, the concentration of dust on the heat exchanger can be more accurately measured by blowing air to the heat exchanger, thereby accurately determining the time when the air conditioner enters the self-cleaning mode, and improving the user experience.

Description

空调器自清洁控制方法Air conditioner self-cleaning control method 技术领域Technical field
本发明属于空调器技术领域,具体提供一种空调器自清洁控制方法。The invention belongs to the technical field of air conditioners, and specifically provides a self-cleaning control method for an air conditioner.
背景技术Background technique
空调器是能够为室内制冷/制热的设备,随着时间的推移,空调器的室内机和室外机上的积灰会逐渐增多,积灰累积到一定程度后会滋生大量的细菌,尤其在室内空气流经室内机时,会携带大量的灰尘和细菌,因此需要对空调器及时进行清洁。Air conditioners are equipment that can cool/heat indoors. As time goes by, the dust on the indoor unit and outdoor unit of the air conditioner will gradually increase. When the dust accumulates to a certain extent, a large number of bacteria will breed, especially indoors. When the air flows through the indoor unit, it will carry a lot of dust and bacteria, so it is necessary to clean the air conditioner in time.
现有技术中,空调器的清洁方式包括人工清洁和空调器自清洁,采用人工清洁较为费时费力,需要将空调器的各个零部件拆卸下来再进行清洁,清洁完成后还需要将各个零部件重新组装起来。因此,现在的许多空调器已经采用自清洁的方式,但是,受空调器实际安装位置、实际运行状态以及室内环境等因素的影响,空调器无法自动判断开启自清洁控制的时机,而是需要用户自行进行判断是否执行空调器的自清洁模式,这就会导致:如果频繁开启自清洁模式,虽然能够保证空调器的洁净度,但是会造成能源的浪费,如果经过很长的一段时间开启自清洁模式,则很难保证空调器的洁净度,并且可能会影响空调器的正常使用,同时影响人的健康。In the prior art, the cleaning methods of the air conditioner include manual cleaning and self-cleaning of the air conditioner. Manual cleaning is time-consuming and laborious. It is necessary to disassemble the parts of the air conditioner before cleaning. After the cleaning is completed, the parts need to be renewed. Assembled. Therefore, many current air conditioners have adopted the self-cleaning method. However, due to the actual installation location, actual operating state and indoor environment of the air conditioner, the air conditioner cannot automatically determine when to turn on the self-cleaning control, but requires the user Judge yourself whether to implement the self-cleaning mode of the air conditioner, which will lead to: If the self-cleaning mode is frequently turned on, although the cleanliness of the air conditioner can be guaranteed, it will cause a waste of energy. If the self-cleaning mode is turned on for a long time Mode, it is difficult to ensure the cleanliness of the air conditioner, and may affect the normal use of the air conditioner, and at the same time affect human health.
因此,本领域提出了一种新的空调器自清洁控制方法来解决上述问题。Therefore, a new air conditioner self-cleaning control method is proposed in the art to solve the above-mentioned problems.
发明内容Summary of the invention
为了解决现有技术中的上述问题,即为了更准确地判断空调器开启自清洁模式的时机,本发明提供了一种空调器自清洁控制方法,所述空调器包括室内机和设置于所述室内机的吹风装置,所述空调器自清洁控制方法包括下列步骤:S110、使吹风装置向所述室内机的换热器吹风;S120、检测被所述吹风装置吹起的灰尘浓度;S130、根据所述灰尘浓度判断是否运行自清洁模式。In order to solve the above-mentioned problems in the prior art, that is, to more accurately determine when the air conditioner starts the self-cleaning mode, the present invention provides a self-cleaning control method for an air conditioner. The air conditioner includes an indoor unit and The air blowing device of an indoor unit, the air conditioner self-cleaning control method includes the following steps: S110, making a blowing device blow air to the heat exchanger of the indoor unit; S120, detecting the concentration of dust blown by the blowing device; S130, Determine whether to run the self-cleaning mode according to the dust concentration.
在上述空调器自清洁控制方法的优选实施方式中,所述吹风装置为所述室内机的风机,步骤S110具体包括:通过调整所述风机的旋转方向以使所述风机向所述室内机的换热器吹风。In a preferred embodiment of the above air conditioner self-cleaning control method, the blowing device is a fan of the indoor unit, and step S110 specifically includes: adjusting the rotation direction of the fan so that the fan is directed toward the indoor unit. The heat exchanger blows.
在上述空调器自清洁控制方法的优选实施方式中,所述吹风装置为独立于所述室内机的风机设置的检测风扇,步骤S110具体包括:启动所述检测风扇以向所述室内机的换热器吹风。In a preferred embodiment of the above air conditioner self-cleaning control method, the blowing device is a detection fan set independently of the fan of the indoor unit, and step S110 specifically includes: activating the detection fan to exchange for the indoor unit. Heater blows.
在上述空调器自清洁控制方法的优选实施方式中,步骤S130具体包括:当所述灰尘浓度大于预设值时,使所述空调器运行自清洁模式。In a preferred embodiment of the above-mentioned air conditioner self-cleaning control method, step S130 specifically includes: when the dust concentration is greater than a preset value, making the air conditioner operate in a self-cleaning mode.
在上述空调器自清洁控制方法的优选实施方式中,在执行步骤S110之前,所述空调器自清洁控制方法还包括:在所述空调器运行的过程中,检测所述室内机的换热器的背风面与迎风面之间的压差;步骤S110具体包括:当所述压差超过预设压差时,再使吹风装置向所述室内机的换热器吹风。In a preferred embodiment of the above air conditioner self-cleaning control method, before step S110 is performed, the air conditioner self-cleaning control method further includes: during the operation of the air conditioner, detecting the heat exchanger of the indoor unit The pressure difference between the leeward surface and the windward surface; step S110 specifically includes: when the pressure difference exceeds a preset pressure difference, the blowing device is then blown to the heat exchanger of the indoor unit.
在上述空调器自清洁控制方法的优选实施方式中,在执行步骤S110之前,所述空调器自清洁控制方法还包括:在所述空调器运行的过程中,检测所述室内机的出风口的出风风量;步骤S110具体包括:当所述出风风量低于预设风量时,再使吹风装置向所述室内机的换热器吹风。In a preferred embodiment of the above air conditioner self-cleaning control method, before step S110 is performed, the air conditioner self-cleaning control method further includes: during the operation of the air conditioner, detecting the air outlet of the indoor unit Outlet air volume; Step S110 specifically includes: when the outlet air volume is lower than the preset air volume, then the blowing device blows to the heat exchanger of the indoor unit.
在上述空调器自清洁控制方法的优选实施方式中,在执行步骤S110之前,所述空调器自清洁控制方法还包括:在所述空调器运行的过程中,检测所述室内机的风机在当前转速下的电流值;步骤S110具体包括:当所述电流值低于预设电流值时,再使吹风装置向所述室内机的换热器吹风。In the preferred embodiment of the above air conditioner self-cleaning control method, before step S110 is performed, the air conditioner self-cleaning control method further includes: during the operation of the air conditioner, detecting that the fan of the indoor unit is currently running The current value at the rotating speed; step S110 specifically includes: when the current value is lower than the preset current value, the blowing device is then blown to the heat exchanger of the indoor unit.
在上述空调器自清洁控制方法的优选实施方式中,在执行步骤S110之前,所述空调器自清洁控制方法还包括:在所述空调器运行的过程中,检测所述室内机的风机在当前转速下的电流值;步骤S110具体包括:当所述电流值低于预设电流值时,获取室内机的盘管温度和室内露点温度;根据所述盘管温度和所述室内露点温度判断所述室内机是否有凝露现象;如果没有凝露,则使吹风装置向所述室内机的换热器吹风;如果有凝露,则当所述电流值低于风机在当前转速下的凝露电流标准值时,则在下次启动所述空调器时再使吹风装置向所述室内机的换热器吹 风;其中,凝露电流标准值为室内机在凝露状态且换热器未出现脏堵时的风机在不同转速下的标准值,该凝露电流标准值<预设电流值。In the preferred embodiment of the above air conditioner self-cleaning control method, before step S110 is performed, the air conditioner self-cleaning control method further includes: during the operation of the air conditioner, detecting that the fan of the indoor unit is currently running The current value at the rotation speed; step S110 specifically includes: when the current value is lower than the preset current value, obtaining the coil temperature and the indoor dew point temperature of the indoor unit; judging the indoor unit according to the coil temperature and the indoor dew point temperature Whether there is condensation in the indoor unit; if there is no condensation, the blowing device is allowed to blow to the heat exchanger of the indoor unit; if there is condensation, when the current value is lower than the condensation of the fan at the current speed When the current standard value is set, the air blowing device will blow the air to the heat exchanger of the indoor unit when the air conditioner is started next time; wherein, the condensation current standard value is that the indoor unit is in the condensation state and the heat exchanger is not dirty. The standard value of the fan at different speeds when it is blocked, the standard value of the condensation current <the preset current value.
在上述空调器自清洁控制方法的优选实施方式中,在执行步骤S110之前,所述空调器自清洁控制方法还包括:获取室内空气的PM2.5值;步骤S110具体包括:当所述PM2.5值高于预设标准值时,再使吹风装置向所述室内机的换热器吹风。In a preferred embodiment of the air conditioner self-cleaning control method, before performing step S110, the air conditioner self-cleaning control method further includes: obtaining the PM2.5 value of indoor air; step S110 specifically includes: when the PM2. When the value of 5 is higher than the preset standard value, the air blowing device is made to blow air to the heat exchanger of the indoor unit.
在上述空调器自清洁控制方法的优选实施方式中,在执行步骤S110之前,所述空调器自清洁控制方法还包括:在所述室内机的换热器产生冷凝水的情形下,检测冷凝水的浊度;步骤S110具体包括:当所述冷凝水的浊度超出预设标准值时,再使吹风装置向所述室内机的换热器吹风。In a preferred embodiment of the above air conditioner self-cleaning control method, before step S110 is performed, the air conditioner self-cleaning control method further includes: detecting condensed water when the heat exchanger of the indoor unit generates condensed water The turbidity; Step S110 specifically includes: when the turbidity of the condensed water exceeds a preset standard value, the blowing device is then blown to the heat exchanger of the indoor unit.
本发明利用吹风装置向室内机的换热器吹风以将换热器上的灰尘吹起,从而更便于测量换热器上的灰尘浓度。通过试验方式可以确定一个合理的预设值,在灰尘浓度超过该预设值时判断室内机需要执行自清洁。相对于直接检测换热器上的灰尘,本发明通过向换热器吹风的方式可以更准确地检测换热器上的灰尘浓度,从而准确地判断出空调进入自清洁的时机,提升用户的使用体验。The invention uses a blowing device to blow the air to the heat exchanger of the indoor unit to blow up the dust on the heat exchanger, thereby making it easier to measure the dust concentration on the heat exchanger. A reasonable preset value can be determined through an experiment, and it is judged that the indoor unit needs to perform self-cleaning when the dust concentration exceeds the preset value. Compared with directly detecting the dust on the heat exchanger, the present invention can more accurately detect the dust concentration on the heat exchanger by blowing air to the heat exchanger, thereby accurately judging the time when the air conditioner enters self-cleaning, and improving the user's use Experience.
附图说明Description of the drawings
图1是本发明的空调器自清洁控制方法的主要流程图。Fig. 1 is a main flow chart of the air conditioner self-cleaning control method of the present invention.
具体实施方式detailed description
为使本发明的实施例、技术方案和优点更加明显,下面将结合附图对本发明的技术方案进行清楚、完整的描述,显然,所述的实施例是本发明的一部分实施例,而不是全部实施例。本领域技术人员应当理解的是,这些实施方式仅仅用于解释本发明的技术原理,并非旨在限制本发明的保护范围。In order to make the embodiments, technical solutions and advantages of the present invention more obvious, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Examples. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.
本发明的空调器包括室内机和设置于该室内机的吹风装置。如图1所示,本发明的空调器自清洁控制方法包括下列步骤:S110、使吹风装置向室内机的换热器吹风;S120、检测被吹风装置吹起的灰尘浓度;S130、根据灰尘浓度判断是否运行自清洁模式。The air conditioner of the present invention includes an indoor unit and a blowing device installed in the indoor unit. As shown in Figure 1, the air conditioner self-cleaning control method of the present invention includes the following steps: S110, making the air blowing device blow air to the heat exchanger of the indoor unit; S120, detecting the concentration of dust blown by the air blowing device; S130, according to the dust concentration Determine whether to run the self-cleaning mode.
作为一种示例,吹风装置可以是室内机的风机,当需要利用吹风装置向室内机的换热器吹风时,可以通过调整风机的旋转方向以使风机向室内机的换热器吹风;作为另一种示例,吹风装置可以为独立于室内机的风机设置的检测风扇,即单独为室内机安装一个专用的检测风扇,启动该检测风扇即可实现向室内机的换热器吹风的目的。As an example, the blowing device may be the fan of the indoor unit. When the blowing device needs to blow to the heat exchanger of the indoor unit, the rotation direction of the fan can be adjusted to make the fan blow to the heat exchanger of the indoor unit; In one example, the blowing device may be a detection fan set independently of the fan of the indoor unit, that is, a dedicated detection fan is installed separately for the indoor unit, and the detection fan can be activated to achieve the purpose of blowing to the heat exchanger of the indoor unit.
在步骤S120中,可以在换热器的上方安装一个粉尘传感器,用来检测被吹风装置吹起的灰尘浓度。在步骤S130中,当检测到的灰尘浓度大于预设值时,说明换热器上的灰尘较多,此时使空调器运行自清洁模式。关于预设值,本领域技术人员可以根据实际需要灵活的设置,例如,可以通过试验方式获得灰尘浓度影响到空调运行效率的临界值,然后根据该临界值确定合理的灰尘浓度的预设值。In step S120, a dust sensor may be installed above the heat exchanger to detect the concentration of dust blown by the blowing device. In step S130, when the detected dust concentration is greater than the preset value, it indicates that there is more dust on the heat exchanger, and at this time, the air conditioner is operated in the self-cleaning mode. Regarding the preset value, those skilled in the art can set it flexibly according to actual needs. For example, a critical value of dust concentration that affects the operating efficiency of the air conditioner can be obtained through experiments, and then a reasonable preset value of dust concentration can be determined according to the critical value.
在一些可能的实施方式中,执行步骤S110之前,本发明的空调器自清洁控制方法还可以先执行如下步骤:在空调器运行的过程中,检测室内机的换热器的背风面与迎风面之间的压差;当压差超过预设压差时,再使吹风装置向所述室内机的换热器吹风。本领域技术人员可以理解的是,室内换热器的背风面与迎风面之间的压差越大说明室内换热器越脏,但是单从压差这一个参数去判断室内换热器是否脏堵可能存在误判的风险,因此,当该压差超过预设压差时,再结合换热器上的灰尘浓度来进一步判断是否需要室内换热器的脏堵,可以进一步降低误判的风险,从而使空调器执行自清洁的时机更准确。需要说明的是,上述的预设压差可以由本领域技术人员根据实际情况选择合理的值。例如,通过试验方式获取室内换热器在未出现脏堵的情形下的背风面与迎风面之间的标准压差,当实时压差大于该标准压差时,说明室内换热器开始出现脏堵,随着实时压差逐渐增大,室内换热器的脏堵也越来越严重,本领域技术人员可以根据不同试验场景以及不同需求选择一个合理的预设压差(该预设压差≥标准压差)。In some possible implementations, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, detecting the leeward side and the windward side of the heat exchanger of the indoor unit When the pressure difference exceeds the preset pressure difference, the blowing device is then blown to the heat exchanger of the indoor unit. Those skilled in the art can understand that the greater the pressure difference between the leeward side and the windward side of the indoor heat exchanger, the more dirty the indoor heat exchanger, but the pressure difference is a parameter to judge whether the indoor heat exchanger is dirty. Blocking may have the risk of misjudgment. Therefore, when the pressure difference exceeds the preset pressure difference, the dust concentration on the heat exchanger is combined to further determine whether the indoor heat exchanger is dirty and blocked, which can further reduce the risk of misjudgment , So that the air conditioner performs self-cleaning timing more accurately. It should be noted that the above-mentioned preset pressure difference can be selected by a person skilled in the art according to actual conditions to a reasonable value. For example, the standard pressure difference between the leeward side and the windward side of the indoor heat exchanger in the absence of dirty clogging is obtained through the test method. When the real-time pressure difference is greater than the standard pressure difference, it indicates that the indoor heat exchanger starts to appear dirty As the real-time pressure difference gradually increases, the dirty clogging of the indoor heat exchanger becomes more and more serious. Those skilled in the art can select a reasonable preset pressure difference according to different test scenarios and different needs (the preset pressure difference ≥standard pressure difference).
在一些可能的实施方式中,执行步骤S110之前,本发明的空调器自清洁控制方法还可以先执行如下步骤:在空调器运行的过程中,检测室内机的出风口的出风风量;当出风风量低于预设风量时,再使吹风装置向所述室内机的换热器吹风。本领域技术人员可以理解的是,室内机的出风口的出风风量越小说明室内换热器越脏,但是单从出风风量这一个参数去判断室内换热器是否脏堵可能存在误判的风险,因此,当 该出风风量低于预设风量时,再结合换热器上的灰尘浓度来进一步判断是否需要室内换热器的脏堵,可以进一步降低误判的风险,从而使空调器执行自清洁的时机更准确。需要说明的是,上述的预设风量可以由本领域技术人员根据实际情况选择合理的值。例如,通过试验方式获取室内换热器在未出现脏堵的情形下的室内机出风口的标准出风风量,当实时出风风量低于该标准出风风量时,说明室内换热器开始出现脏堵,随着实时出风风量逐渐减小,室内换热器的脏堵也越来越严重,本领域技术人员可以根据不同试验场景以及不同需求选择一个合理的预设风量(该预设风量≤标准出风风量)。In some possible implementations, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, detecting the air volume of the air outlet of the indoor unit; When the air volume is lower than the preset air volume, the blowing device is then blown to the heat exchanger of the indoor unit. Those skilled in the art can understand that the smaller the air outlet of the indoor unit, the dirtier the indoor heat exchanger. However, it may be misjudged if the indoor heat exchanger is dirty or blocked from the single parameter of the air outlet. Therefore, when the air outlet air volume is lower than the preset air volume, the dust concentration on the heat exchanger is combined to further determine whether the indoor heat exchanger is required to be dirty. This can further reduce the risk of misjudgment and make the air conditioner The timing of the self-cleaning of the filter is more accurate. It should be noted that the above-mentioned preset air volume can be selected by a person skilled in the art according to actual conditions. For example, obtain the standard air flow rate of the indoor unit air outlet of the indoor heat exchanger without being dirty and clogged through the test method. When the real-time air flow rate is lower than the standard air flow rate, it means that the indoor heat exchanger starts to appear. Dirty blockage, as the real-time air volume gradually decreases, the dirty blockage of the indoor heat exchanger is getting more and more serious. Those skilled in the art can choose a reasonable preset air volume according to different test scenarios and different needs (the preset air volume ≤standard air volume).
在一些可能的实施方式中,执行步骤S110之前,本发明的空调器自清洁控制方法还可以先执行如下步骤:在空调器运行的过程中,检测室内机的风机在当前转速下的电流值;当该电流值低于预设电流值时,再使吹风装置向所述室内机的换热器吹风。本领域技术人员可以理解的是,室内机的风机在相同转速下的电流值越小说明室内换热器越脏,但是单从风机电流这一个参数去判断室内换热器是否脏堵可能存在误判的风险,因此,当风机在当前转速下的电流值低于预设电流值时,再结合换热器上的灰尘来进一步判断是否需要室内换热器的脏堵,可以进一步降低误判的风险,从而使空调器执行自清洁的时机更准确。需要说明的是,上述的预设电流值可以由本领域技术人员根据实际情况选择合理的值。例如,通过试验方式获取室内换热器在未出现脏堵的情形下的风机在不同转速下的标准电流值,当某一转速下的实时电流值低于该转速下的标准电流值时,说明室内换热器开始出现脏堵,随着实时电流值的逐渐减小,室内换热器的脏堵也越来越严重,本领域技术人员可以根据不同试验场景以及不同需求选择一个合理的预设电流值(该同一转速下的预设电流值≤同一转速下的标准电流值)。In some possible implementations, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, detecting the current value of the fan of the indoor unit at the current speed; When the current value is lower than the preset current value, the air blowing device is then made to blow air to the heat exchanger of the indoor unit. Those skilled in the art can understand that the smaller the current value of the fan of the indoor unit at the same speed, the more dirty the indoor heat exchanger, but it may be an error to judge whether the indoor heat exchanger is dirty or blocked from the parameter of the fan current alone. Therefore, when the current value of the fan at the current speed is lower than the preset current value, the dust on the heat exchanger is combined to further determine whether the indoor heat exchanger is required to be dirty, which can further reduce the misjudgment Risk, so that the air conditioner performs self-cleaning timing more accurately. It should be noted that the above-mentioned preset current value can be selected by a person skilled in the art according to actual conditions. For example, the standard current value of the fan at different speeds of the indoor heat exchanger in the case of no dirty blockage is obtained through the test method. When the real-time current value at a certain speed is lower than the standard current value at that speed, it is indicated The indoor heat exchanger begins to become dirty and clogged. As the real-time current value gradually decreases, the indoor heat exchanger becomes more and more dirty. Those skilled in the art can choose a reasonable preset according to different test scenarios and different needs. Current value (the preset current value at the same speed ≤ the standard current value at the same speed).
在一些可能的实施方式中,执行步骤S110之前,本发明的空调器自清洁控制方法还可以先执行如下步骤:在空调器运行的过程中,检测室内机的风机在当前转速下的电流值;当电流值低于预设电流值时,获取室内机的盘管温度和室内露点温度;根据盘管温度和室内露点温度判断室内机是否有凝露现象;如果没有凝露,则使吹风装置向所述室内机的换热器吹风;如果有凝露,则当电流值低于风机在当前转速下的凝露电流标准值时,则在下次启动空调器时再使吹风装置向所述室内机的 换热器吹风;其中,凝露电流标准值为室内机在凝露状态且换热器未出现脏堵时的风机在不同前转速下的标准值,该凝露电流标准值<预设电流值。本领域技术人员可以理解的是,在凝露状态下的风机的电流值通常较小,因此仅通过风机电流判断是否触发吹风装置向换热器吹风,如果换热器具有凝露(此时检测到的电流值很容易小于预设电流值),则会频繁触发,因此,可以综合多个方面进行检测。即在电流值满足预设电流值的情形下,如果没有凝露则可以直接使吹风装置向所述室内机的换热器吹风;如果有凝露,则可以进一步比较电流值是否小于凝露电流标准值,如果小于凝露电流标准值,则说明换热器脏堵,但是由于存在凝露,灰尘有可能不容易被吹起,易导致判断结果出现偏差,因此可以在下次启动空调器时再使吹风装置向所述室内机的换热器吹风。In some possible implementations, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: during the operation of the air conditioner, detecting the current value of the fan of the indoor unit at the current speed; When the current value is lower than the preset current value, obtain the coil temperature and indoor dew point temperature of the indoor unit; determine whether the indoor unit has condensation based on the coil temperature and indoor dew point temperature; if there is no condensation, make the blowing device to The heat exchanger of the indoor unit blows; if there is condensation, when the current value is lower than the standard value of the condensation current of the fan at the current speed, the air blowing device will be directed to the indoor unit when the air conditioner is started next time The heat exchanger blows; among them, the condensation current standard value is the standard value of the fan at different front speeds when the indoor unit is in the condensation state and the heat exchanger is not clogged, and the condensation current standard value <preset current value. Those skilled in the art can understand that the current value of the fan in the condensation state is usually small, so only the fan current is used to determine whether the blowing device is triggered to blow the heat to the heat exchanger. If the heat exchanger has condensation (detection at this time) The current value obtained is easily smaller than the preset current value), it will be triggered frequently, therefore, it can be detected in multiple aspects. That is, when the current value meets the preset current value, if there is no condensation, the blowing device can directly blow the air to the heat exchanger of the indoor unit; if there is condensation, it can be further compared whether the current value is less than the condensation current The standard value. If it is less than the standard value of condensation current, it means that the heat exchanger is dirty and blocked. However, due to condensation, the dust may not be easily blown up, which may easily lead to deviations in the judgment result. Therefore, you can restart the air conditioner next time. The air blowing device blows air to the heat exchanger of the indoor unit.
在一些可能的实施方式中,执行步骤S110之前,本发明的空调器自清洁控制方法还可以先执行如下步骤:获取室内空气的PM2.5值;当PM2.5值高于预设标准值时,再使吹风装置向所述室内机的换热器吹风。本领域技术人员可以理解的是,室内换热器是否脏堵或者多长时间会脏,这与室内的空气质量(PM2.5值)有很大关系,当空气质量较差时,室内换热器脏的快;当空气质量较好时,室内换热器脏的慢。但是单从PM2.5值这一个参数去判断室内换热器是否脏堵可能存在误判的风险,因此,当PM2.5值高于预设标准值时,再结合换热器上的灰尘来进一步判断是否需要室内换热器的脏堵,可以进一步降低误判的风险,从而使空调器执行自清洁的时机更准确。需要说明的是,PM2.5表示每立方米空气中细微颗粒物的含量,如10微克/立方米的PM2.5浓度指标为10,本发明的PM2.5值为PM2.5浓度指标。因此,可以将上述的预设标准值设置为120-150之间的任意值,在该区间的PM2.5值代表空气质量比较差。当然也可以由本领域技术人员根据实际情况选择其他合理的值。In some possible implementations, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: obtain the PM2.5 value of the indoor air; when the PM2.5 value is higher than the preset standard value , And then make the blowing device blow to the heat exchanger of the indoor unit. Those skilled in the art can understand that whether the indoor heat exchanger is dirty or blocked or how long it will be dirty is largely related to the indoor air quality (PM2.5 value). When the air quality is poor, the indoor heat exchange The organs get dirty quickly; when the air quality is good, the indoor heat exchanger gets dirty slowly. However, it may be a risk of misjudgment to judge whether the indoor heat exchanger is dirty or blocked from the parameter of PM2.5 value alone. Therefore, when the PM2.5 value is higher than the preset standard value, combined with the dust on the heat exchanger Further judging whether the indoor heat exchanger needs to be dirty or blocked can further reduce the risk of misjudgment, so that the timing of the air conditioner to perform self-cleaning is more accurate. It should be noted that PM2.5 represents the content of fine particles per cubic meter of air. For example, the PM2.5 concentration index of 10 micrograms/m3 is 10, and the PM2.5 value of the present invention is the PM2.5 concentration index. Therefore, the aforementioned preset standard value can be set to any value between 120-150, and the PM2.5 value in this interval represents relatively poor air quality. Of course, those skilled in the art can also select other reasonable values according to actual conditions.
在一些可能的实施方式中,执行步骤S110之前,本发明的空调器自清洁控制方法还可以先执行如下步骤:在室内机的换热器产生冷凝水的情形下,检测冷凝水的浊度;当冷凝水的浊度超出预设标准值时,再使吹风装置向所述室内机的换热器吹风。本领域技术人员可以理解的是,如果蒸发器较脏,那么制冷模式下的空调冷凝水会较脏,因此本发明结合冷凝水的浊度来判断是否使吹风装置向所述室内机的换热器吹风可以进一步减少频发触发吹风装置向换热器吹风的情形,减少不必 要的功耗。需要说明的是,关于预设标准值可以由本领域技术人员根据实际需要设定。例如,本领域技术人员可以通过试验方式获得冷凝水浊度与室内换热器脏净程度的对应关系,从而确定一个合理的预报标准值来判断空调器是否需要自清洁。In some possible implementation manners, before performing step S110, the air conditioner self-cleaning control method of the present invention may also perform the following steps: detecting the turbidity of the condensate when the heat exchanger of the indoor unit generates condensate; When the turbidity of the condensed water exceeds the preset standard value, the air blowing device is then made to blow air to the heat exchanger of the indoor unit. Those skilled in the art can understand that if the evaporator is dirty, the condensate water of the air conditioner in the cooling mode will be dirty. Therefore, the present invention uses the turbidity of the condensed water to determine whether to make the air blower transfer heat to the indoor unit The blower can further reduce the frequent triggering of the blowing device to blow to the heat exchanger, and reduce unnecessary power consumption. It should be noted that the preset standard value can be set by those skilled in the art according to actual needs. For example, a person skilled in the art can obtain the corresponding relationship between the condensate turbidity and the dirty degree of the indoor heat exchanger through experiments, so as to determine a reasonable forecast standard value to determine whether the air conditioner needs self-cleaning.
至此,已经结合附图所示的优选实施方式描述了本发明的技术方案,但是,本领域技术人员容易理解的是,本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下,本领域技术人员可以对相关技术特征作出等同的更改或替换,这些更改或替换之后的技术方案都将落入本发明的保护范围之内。So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, those skilled in the art will readily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

  1. 一种空调器自清洁控制方法,所述空调器包括室内机和设置于所述室内机的吹风装置,其特征在于,所述空调器自清洁控制方法包括下列步骤:A self-cleaning control method of an air conditioner, the air conditioner comprising an indoor unit and a blowing device arranged on the indoor unit, wherein the self-cleaning control method of the air conditioner includes the following steps:
    S110、使吹风装置向所述室内机的换热器吹风;S110. Make the air blowing device blow air to the heat exchanger of the indoor unit;
    S120、检测被所述吹风装置吹起的灰尘浓度;S120. Detect the concentration of dust blown by the blowing device;
    S130、根据所述灰尘浓度判断是否运行自清洁模式。S130: Determine whether to run the self-cleaning mode according to the dust concentration.
  2. 根据权利要求1所述的空调器自清洁控制方法,其特征在于,所述吹风装置为所述室内机的风机,步骤S110具体包括:The self-cleaning control method of an air conditioner according to claim 1, wherein the blowing device is a fan of the indoor unit, and step S110 specifically includes:
    通过调整所述风机的旋转方向以使所述风机向所述室内机的换热器吹风。The rotation direction of the fan is adjusted so that the fan blows air to the heat exchanger of the indoor unit.
  3. 根据权利要求1所述的空调器自清洁控制方法,其特征在于,所述吹风装置为独立于所述室内机的风机设置的检测风扇,步骤S110具体包括:The self-cleaning control method of an air conditioner according to claim 1, wherein the blowing device is a detection fan installed independently of a fan of the indoor unit, and step S110 specifically includes:
    启动所述检测风扇以向所述室内机的换热器吹风。The detection fan is activated to blow air to the heat exchanger of the indoor unit.
  4. 根据权利要求1至3中任一项所述的空调器自清洁控制方法,其特征在于,步骤S130具体包括:The self-cleaning control method of an air conditioner according to any one of claims 1 to 3, wherein step S130 specifically includes:
    当所述灰尘浓度大于预设值时,使所述空调器运行自清洁模式。When the dust concentration is greater than a preset value, the air conditioner is operated in a self-cleaning mode.
  5. 根据权利要求4所述的空调器自清洁控制方法,其特征在于,在执行步骤S110之前,所述空调器自清洁控制方法还包括:The air conditioner self-cleaning control method according to claim 4, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:
    在所述空调器运行的过程中,检测所述室内机的换热器的背风面与迎风面之间的压差;During the operation of the air conditioner, detecting the pressure difference between the leeward surface and the windward surface of the heat exchanger of the indoor unit;
    步骤S110具体包括:Step S110 specifically includes:
    当所述压差超过预设压差时,再使吹风装置向所述室内机的换热器吹风。When the pressure difference exceeds the preset pressure difference, the air blowing device is then made to blow air to the heat exchanger of the indoor unit.
  6. 根据权利要求4所述的空调器自清洁控制方法,其特征在于,在 执行步骤S110之前,所述空调器自清洁控制方法还包括:The air conditioner self-cleaning control method according to claim 4, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:
    在所述空调器运行的过程中,检测所述室内机的出风口的出风风量;During the operation of the air conditioner, detecting the air volume of the air outlet of the indoor unit;
    步骤S110具体包括:Step S110 specifically includes:
    当所述出风风量低于预设风量时,再使吹风装置向所述室内机的换热器吹风。When the outlet air volume is lower than the preset air volume, the blowing device is then blown to the heat exchanger of the indoor unit.
  7. 根据权利要求4所述的空调器自清洁控制方法,其特征在于,在执行步骤S110之前,所述空调器自清洁控制方法还包括:The air conditioner self-cleaning control method according to claim 4, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:
    在所述空调器运行的过程中,检测所述室内机的风机在当前转速下的电流值;During the operation of the air conditioner, detecting the current value of the fan of the indoor unit at the current speed;
    步骤S110具体包括:Step S110 specifically includes:
    当所述电流值低于预设电流值时,再使吹风装置向所述室内机的换热器吹风。When the current value is lower than the preset current value, the air blowing device is then made to blow air to the heat exchanger of the indoor unit.
  8. 根据权利要求4所述的空调器自清洁控制方法,其特征在于,在执行步骤S110之前,所述空调器自清洁控制方法还包括:The air conditioner self-cleaning control method according to claim 4, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:
    在所述空调器运行的过程中,检测所述室内机的风机在当前转速下的电流值;During the operation of the air conditioner, detecting the current value of the fan of the indoor unit at the current speed;
    步骤S110具体包括:Step S110 specifically includes:
    当所述电流值低于预设电流值时,获取室内机的盘管温度和室内露点温度;When the current value is lower than the preset current value, obtain the coil temperature of the indoor unit and the indoor dew point temperature;
    根据所述盘管温度和所述室内露点温度判断所述室内机是否有凝露现象;Judging whether the indoor unit has condensation based on the coil temperature and the indoor dew point temperature;
    如果没有凝露,则使吹风装置向所述室内机的换热器吹风;If there is no condensation, make the blowing device blow air to the heat exchanger of the indoor unit;
    如果有凝露,则当所述电流值低于风机在当前转速下的凝露电流标准值时,则在下次启动所述空调器时再使吹风装置向所述室内机的换热器吹风;If there is condensation, when the current value is lower than the standard value of the condensation current of the fan at the current speed, the air blowing device will blow the air to the heat exchanger of the indoor unit when the air conditioner is started next time;
    其中,凝露电流标准值为室内机在凝露状态且换热器未出现脏堵时的风机在不同转速下的标准值,该凝露电流标准值<预设电流值。Among them, the standard value of the condensation current is the standard value of the fan at different speeds when the indoor unit is in the condensation state and the heat exchanger is not dirty, and the standard value of the condensation current is less than the preset current value.
  9. 根据权利要求4所述的空调器自清洁控制方法,其特征在于,在执行步骤S110之前,所述空调器自清洁控制方法还包括:The air conditioner self-cleaning control method according to claim 4, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:
    获取室内空气的PM2.5值;Get the PM2.5 value of indoor air;
    步骤S110具体包括:Step S110 specifically includes:
    当所述PM2.5值高于预设标准值时,再使吹风装置向所述室内机的换热器吹风。When the PM2.5 value is higher than the preset standard value, the air blowing device is then made to blow air to the heat exchanger of the indoor unit.
  10. 根据权利要求4所述的空调器自清洁控制方法,其特征在于,在执行步骤S110之前,所述空调器自清洁控制方法还包括:The air conditioner self-cleaning control method according to claim 4, characterized in that, before step S110 is performed, the air conditioner self-cleaning control method further comprises:
    在所述室内机的换热器产生冷凝水的情形下,检测冷凝水的浊度;In the case where the heat exchanger of the indoor unit produces condensed water, detecting the turbidity of the condensate;
    步骤S110具体包括:Step S110 specifically includes:
    当所述冷凝水的浊度超出预设标准值时,再使吹风装置向所述室内机的换热器吹风。When the turbidity of the condensed water exceeds a preset standard value, the air blowing device is then made to blow air to the heat exchanger of the indoor unit.
PCT/CN2020/079909 2019-03-21 2020-03-18 Self-cleaning control method for air conditioner WO2020187232A1 (en)

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