WO2020187241A1 - Procédé de commande d'auto-nettoyage pour climatiseur - Google Patents

Procédé de commande d'auto-nettoyage pour climatiseur Download PDF

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Publication number
WO2020187241A1
WO2020187241A1 PCT/CN2020/079938 CN2020079938W WO2020187241A1 WO 2020187241 A1 WO2020187241 A1 WO 2020187241A1 CN 2020079938 W CN2020079938 W CN 2020079938W WO 2020187241 A1 WO2020187241 A1 WO 2020187241A1
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WO
WIPO (PCT)
Prior art keywords
air conditioner
fan
control method
self
heat exchanger
Prior art date
Application number
PCT/CN2020/079938
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English (en)
Chinese (zh)
Inventor
于洋
Original Assignee
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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Application filed by 青岛海尔空调器有限总公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调器有限总公司
Publication of WO2020187241A1 publication Critical patent/WO2020187241A1/fr

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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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits

Definitions

  • the invention belongs to the technical field of air conditioners, and specifically provides a self-cleaning control method for an air conditioner.
  • the air conditioner is a device that can cool/heat the room. As time goes by, the dust accumulation on the indoor unit of the air conditioner will gradually increase. When the dust accumulation reaches a certain level, a large number of bacteria will breed, especially when the indoor air flows through the room. The air conditioner needs to be cleaned in time because it will carry a lot of dust and bacteria when it is running.
  • air conditioners mostly adopt a self-cleaning method, that is, by controlling the operation of the indoor unit, the evaporator is frosted first and then defrosted, and the evaporator is cleaned by defrosting. Sometimes, self-cleaning by simply relying on frosting first and then defrosting will not completely clean up the indoor heat exchanger, especially when there are some larger dirty spider webs, it is difficult to be taken away by the defrosting water.
  • the present invention proposes a self-cleaning control method for an air conditioner to solve the above-mentioned problems.
  • the present invention proposes a self-cleaning control method for an air conditioner.
  • the air conditioner includes an indoor unit and an exhaust provided on the indoor unit.
  • step S140 specifically includes: when the heat exchanger is in the condensation state and ⁇ I ⁇ the first preset value, not starting the exhaust fan and the Blower fan.
  • step S140 specifically further includes: when the heat exchanger is in a condensation state and ⁇ I>the first preset value, restart the air conditioner when the air conditioner is started next time The exhaust fan and the blower fan.
  • step S140 specifically further includes: when the heat exchanger is not in a condensation state and ⁇ I ⁇ the first preset value, not starting the exhaust fan and The blowing fan.
  • step S140 specifically further includes: when the heat exchanger is not in a condensation state and ⁇ I>the first preset value, starting the exhaust fan and the exhaust fan The air supply fan.
  • the air conditioner self-cleaning control method further includes: when the exhaust fan and the blower fan are activated, when ⁇ I ⁇ second preset Value, the rotation speed of the exhaust fan is controlled to a first rotation speed, and the rotation speed of the air supply fan is controlled to a second rotation speed; wherein, the second preset value>the first preset value.
  • the air conditioner self-cleaning control method further includes: when the exhaust fan and the blower fan are activated, when ⁇ I>the second preset Value, the speed of the exhaust fan is controlled to be the third speed, and the speed of the air supply fan is controlled to be the fourth speed; wherein, the third speed>the first speed, the fourth speed>the The second speed.
  • the air inlet of the indoor unit is provided with a cover, and the cover can open or close the air inlet of the indoor unit; the air conditioner self-cleaning control method It also includes: when the blowing fan and the exhaust fan are activated, controlling the cover to close the air inlet.
  • the air conditioner further includes a water storage cavity and a humidification module arranged in the indoor unit, and the water in the water storage cavity can be stored in the humidification module. Under the action, it is atomized into water vapor and diffused to the heat exchanger; the air conditioner self-cleaning control method further includes: starting the humidification module after the air conditioner is cleaned by dust.
  • the current value of the fan of the indoor unit at the same rotation speed is smaller, the indoor heat exchanger is dirty. Therefore, the current value of the fan of the indoor unit at the current rotation speed is compared with the fan when the heat exchanger of the indoor unit is in a clean state.
  • the standard current value at the current speed is compared, and on this basis, the present invention also comprehensively judges whether to start the exhaust fan and the air supply fan in combination with the condensation state of the heat exchanger to vacuum and clean the heat exchanger. In this way, the double judgment method can more accurately determine the time to clean the heat exchanger. Further, the turbidity of the heat exchanger is judged according to the comparison result, and then the rotation speed of the blowing fan and the exhaust fan are judged according to the turbidity, so as to save energy while ensuring the dust collection effect.
  • Fig. 1 is a main flow chart of the air conditioner self-cleaning control method of the present invention.
  • the air conditioner of the present invention includes an indoor unit and an exhaust fan and a blower fan arranged on the indoor machine; the exhaust fan is used to suck out dust on the heat exchanger of the indoor unit to the outside, and the blower fan is used to remove the heat exchanger The dust on the heat exchanger is blown up to assist the exhaust fan to suck out the dust on the heat exchanger to the outside.
  • Fig. 1 is a main flowchart of the self-cleaning control method of an air conditioner of the present invention.
  • the air conditioner of the present invention is self cleaning control method comprising the following steps: S110, a current value detected indoor fan speed at the current I and the current indoor coil temperature and indoor dew point temperature; S120, comparison I current and I standard ; S130, judge whether the heat exchanger of the indoor unit is in condensation state according to the coil temperature and dew point temperature; S130, judge whether to start the exhaust fan based on the condensation state and the comparison result of I current and I standard And the air supply fan; among them, the I standard is the standard current value of the fan at the current speed when the heat exchanger of the indoor unit is in a clean state.
  • the present invention also combines the condensation state of the heat exchanger to comprehensively judge whether to start the exhaust fan and the blower fan to vacuum and clean the heat exchanger. In this way, the double judgment method can more accurately determine the time to clean the heat exchanger.
  • ⁇ I I -I ago when the standard, the heat exchanger in a condensation state and ⁇ I ⁇ a first predetermined value, the exhaust does not start Fan and air supply fan; when the heat exchanger is in the condensation state and ⁇ I>the first preset value, the exhaust fan and air supply fan will be restarted when the air conditioner is started next time.
  • the heat exchanger can be vacuumed and cleaned when the heat exchanger is started next time (the condensation on the heat exchanger is usually dissipated when the heat exchanger is started next time); if I current ⁇ I standard value does not exceed
  • the first preset value indicates that the heat exchanger is not severely clogged and there is no need to vacuum and clean the heat exchanger.
  • the first preset value can be determined by those skilled in the art according to experiments. For example, the functional relationship between the difference between the current I and the I standard and the turbidity of the heat exchanger can be obtained through an experiment, and then a reasonable first The preset value is used as the critical value for self-cleaning the heat exchanger.
  • the speed of the exhaust fan is controlled to be the first speed
  • the speed of the supply fan is controlled to be the second speed
  • the current value of the fan is not very reduced compared to the standard current value, indicating that the dirty block of the heat exchanger is not very serious, so the speed of the exhaust fan can be set to the first speed, and the speed of the air supply fan is the second speed .
  • the first rotation speed and the second rotation speed may be set by those skilled in the art according to actual needs.
  • the first rotation speed may also be a first speed speed of the exhaust fan
  • the second speed may also be a first speed speed of the air supply fan.
  • the speed of the exhaust fan is controlled to be the third speed
  • the speed of the air supply fan is controlled to be the fourth speed
  • the current value of the fan is greatly reduced compared to the standard current value, indicating that the heat exchanger is very dirty and clogged. Therefore, the speed of the exhaust fan can be set to the third speed, and the speed of the air supply fan can be set to the fourth speed.
  • the third speed and the fourth speed can be set by those skilled in the art according to actual needs.
  • the third speed can also be the second speed of the exhaust fan (or other speeds higher than the first speed), and the fourth speed is also It can be the second speed (or the other first speed) of the blower fan.
  • the above-mentioned second preset value can also be determined by a person skilled in the art according to the actual situation to a reasonable value.
  • the air inlet of the indoor unit is provided with a cover, and the cover can open or close the air inlet of the indoor unit.
  • the control cover closes the air inlet, so that the heat exchanger can be cleaned in a closed environment, which can further improve the dust collection efficiency of the heat exchanger.
  • the air conditioner further includes a water storage cavity and a humidification module arranged in the indoor unit, and the water in the water storage cavity can be atomized into water vapor under the action of the humidification module and diffused to the heat exchange Device.
  • the self-cleaning control method of the air conditioner of the present invention further includes: starting the humidification module after the air conditioner is cleaned by dust to diffuse the clean water vapor on the heat exchanger of the indoor unit, which is beneficial to improve the cleanliness of the heat exchanger.

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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

La présente invention, qui se rapporte au domaine technique des climatiseurs, concerne en particulier un procédé de commande d'auto-nettoyage destiné à un climatiseur. Afin d'améliorer l'effet d'auto-nettoyage d'un climatiseur, le climatiseur de la présente invention comprend une unité intérieure, un ventilateur aspirant et un ventilateur d'alimentation en air agencés sur l'unité intérieure ; le ventilateur aspirant est utilisé pour enlever par aspiration la poussière sur un échangeur de chaleur de l'unité intérieure, afin d'éliminer la poussière de l'espace ; le ventilateur d'alimentation en air est utilisé pour souffler la poussière sur l'échangeur de chaleur afin d'aider le ventilateur aspirant à éliminer la poussière de l'espace. Le procédé de commande d'auto-nettoyage pour un climatiseur consiste : à détecter la valeur du courant Iactuel d'un ventilateur de l'unité intérieure à une vitesse de rotation actuelle, ainsi que la température de serpentin de l'unité intérieure et la température du point de rosée à l'intérieur ; à comparer le courant Iactuel avec le courant lstand ard ; à déterminer si l'échangeur de chaleur de l'unité intérieure est en état de condensation en fonction de la température du serpentin et de la température du point de rosée ; en fonction de l'état de condensation et du résultat de la comparaison entre Iactuel et Istandard, à déterminer s'il est nécessaire de démarrer le ventilateur aspirant et l'alimentation en air. Selon la présente invention, le temps nécessaire pour effectuer l'élimination de la poussière et le nettoyage sur un échangeur de chaleur est déterminé avec plus de précision au moyen de la double détermination.
PCT/CN2020/079938 2019-03-21 2020-03-18 Procédé de commande d'auto-nettoyage pour climatiseur WO2020187241A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910218149.X 2019-03-21
CN201910218149.XA CN109916058B (zh) 2019-03-21 2019-03-21 空调器自清洁控制方法

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CN109916058B (zh) * 2019-03-21 2021-01-29 青岛海尔空调器有限总公司 空调器自清洁控制方法
CN113654214B (zh) * 2021-08-24 2022-08-02 美的集团武汉制冷设备有限公司 空调器自清洁的控制方法、空调器及可读存储介质
CN115789865B (zh) * 2022-12-12 2024-09-27 珠海格力电器股份有限公司 一种空调器的自清洁控制方法、装置和空调器

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