WO2020133922A1 - Procédé de commande anti-condensation pour climatiseur et unité intérieure de climatiseur - Google Patents

Procédé de commande anti-condensation pour climatiseur et unité intérieure de climatiseur Download PDF

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Publication number
WO2020133922A1
WO2020133922A1 PCT/CN2019/090007 CN2019090007W WO2020133922A1 WO 2020133922 A1 WO2020133922 A1 WO 2020133922A1 CN 2019090007 W CN2019090007 W CN 2019090007W WO 2020133922 A1 WO2020133922 A1 WO 2020133922A1
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WIPO (PCT)
Prior art keywords
air outlet
condensation
air conditioner
indoor unit
control method
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PCT/CN2019/090007
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English (en)
Chinese (zh)
Inventor
刘卫兵
吴洪金
耿宝寒
郝本华
刘庆赟
徐中华
王星元
孙小峰
吴文波
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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Publication of WO2020133922A1 publication Critical patent/WO2020133922A1/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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to an air conditioner control method and equipment, in particular to an air conditioner anti-condensation control method and an air conditioner indoor unit.
  • An object of the present invention is to provide an air-conditioning anti-condensation control method and an air-conditioning indoor unit that can effectively eliminate indoor floor condensation.
  • the present invention provides an anti-condensation control method for an air conditioner.
  • the air conditioner includes an air conditioner indoor unit installed indoors.
  • the air conditioner indoor unit includes a lower air outlet.
  • the heat exchange air flow blown from the lower air outlet can be directed to the ground.
  • the control method includes the following step:
  • the temperature of the air outlet at the lower air outlet of the indoor unit is increased for the first preset time.
  • the steps of obtaining the condensation state of the indoor floor and judging whether to generate a decondensation signal according to the condensation state include:
  • the step of obtaining the condensation state of the indoor ground includes:
  • the air outlet temperature of the lower air outlet of the indoor unit is raised above the indoor dew point temperature.
  • the step of increasing the air outlet temperature of the lower air outlet of the indoor unit and continuing for the first preset time includes:
  • the temperature of the air outlet is increased by increasing the speed of the fan that blows out the airflow outside the air outlet.
  • the outlet temperature is increased by reducing the frequency of the compressor of the air conditioner to 50%;
  • the air temperature is increased by reducing the frequency of the compressor of the air conditioner to 60% of the original.
  • the air temperature is raised by reducing the frequency of the compressor of the air conditioner, and the frequency after the compressor is lowered is higher than 10 Hz.
  • the value range of the first preset time is greater than or equal to 1 hour and less than or equal to 2.5 hours; and/or
  • the value range of the second preset time is greater than or equal to 1 hour and less than or equal to 2 hours.
  • a second aspect of the present invention also provides an air-conditioning indoor unit that performs decondensation treatment using any of the above anti-condensation control methods, including:
  • the upper air outlet is used to export the heat exchange airflow
  • the lower air outlet is set below the upper air outlet
  • the controller includes a memory and a processor.
  • the memory stores a computer program.
  • the computer program is executed by the processor, the anti-condensation control method according to any one of the above is implemented.
  • the air conditioner indoor unit also includes:
  • the sensor is used to sense the condensation state of the indoor floor.
  • the air-conditioning anti-condensation control method in the present invention first obtains the size of the air outlet of the fan of the air conditioner. When the size of the air outlet meets the conditions, the status of the condensation information on the ground is obtained. When the amount of condensation is found to be large, it is easy to cause danger. Increasing the outlet temperature of the lower air outlet for decondensation treatment reduces the risk of the user slipping due to condensation.
  • FIG. 1 is a flowchart of an anti-condensation control method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of an anti-condensation control method according to another embodiment of the present invention.
  • FIG. 3 is a flowchart of an anti-condensation control method according to yet another embodiment of the present invention.
  • FIG. 4 is a schematic structural block diagram of an air conditioner according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural view of an air conditioner according to an embodiment of the present invention.
  • FIGS. 1 to 3 it is a preferred embodiment of the present invention.
  • the heat exchange air flow from the air outlet of the air conditioner makes condensation easily occur on the indoor wall surface.
  • the indoor wall surface tends to form dewdrops due to the temperature drop.
  • the anti-condensation control method in the present invention is used to solve the problem of condensation on the indoor wall surface. The following describes the control method in detail.
  • the air-conditioning cabinet with an upper air outlet and a lower air outlet located below the upper air outlet is exemplified below.
  • control method in the present invention is used in a scenario It is not limited by the type of air conditioner indoor unit, the number of air outlets and the layout position, any indoor wall surface (the wall surface can be a vertical indoor wall, a horizontal ground or a horizontal ceiling, etc. The following is the wall surface Examples on the ground) Air conditioners that produce condensation can be decondensed using this control method.
  • the air conditioner in this embodiment includes an air conditioner indoor unit installed indoors.
  • the air conditioner indoor unit may specifically be an air conditioner cabinet, which includes an upper air outlet and a lower air outlet located below the upper air outlet.
  • the lower air outlet is located below the air conditioner.
  • the heat exchange air flow blown out from the lower air outlet can be directed to the ground, so that when the air conditioner is in the cooling mode, condensation is likely to occur on the indoor ground, which may easily cause user complaints or user accidents.
  • the control method includes the following steps:
  • the air conditioner generally has several positions of strong wind, high wind, medium wind, low wind and silent wind. Specifically, when the air conditioner is in a strong wind state, the fan speed is about 780rpm; when the air conditioner is in a high wind state, the fan speed is about 680rpm; when the air conditioner is in a stroke state, the fan speed is about 620rpm; when the air conditioner is in a low wind state The speed of the fan is about 540rpm; when the air conditioner is in a silent wind state, the speed of the fan is about 400rpm.
  • step S102 before the anti-condensation process is performed, the rotation speed of the fan is acquired so that when the rotation speed of the fan is too high and no special anti-condensation process is required, the air conditioner does not cause unnecessary actions.
  • the air-out gear position of the air conditioner may be obtained, and when the air-out gear position is a middle-stroke and low-wind gear position, a subsequent decondensation process is performed.
  • the number of air outlets and the actual speed of each air outlet are different. Therefore, in order to better adapt to various types of air conditioners.
  • the rotation speed of the fan that ejects the airflow outside the downward air outlet of the indoor unit can be obtained.
  • the decondensation process you need to first obtain the condensation state of the ground (the ground that is in contact with the airflow blown from the lower air outlet). When the amount of condensation is found to be large, the decondensation signal is generated; when the amount of condensation is found to be small , No decondensation signal is generated.
  • step S106 after the decondensation signal is generated, the temperature of the heat exchange airflow derived from the lower air outlet can be continuously increased for a first preset time (that is, within the first preset time, the heat exchange airflow derived from the lower air outlet).
  • the temperature of is always maintained at the increased temperature
  • the value range of the first preset time can be [1h, 2.5h], for example, 1h, 2h or 2.5h, h is the hour; that is, the first preset time
  • the value range of can be greater than or equal to 1 hour and less than or equal to 2.5 hours), so as to perform decondensation treatment.
  • the heat exchange airflow is increased, if the amount of increase is small, the generation of condensation can be reduced to achieve the removal of condensation (the amount of condensation generated is small, the generated condensation is continuously air-dried, and eventually the total condensation is reduced); When the amount of increase is large, the air-drying effect can be enhanced to achieve dew condensation.
  • the fan speed of each air conditioner does not correspond to the generated air volume or wind speed (that is, the fan speed of the first air conditioner may be higher than the fan speed of the second air conditioner, but due to the different blade structure, the second fan (The generated air volume or wind speed is higher than the air volume or wind speed generated by the first fan).
  • the method of monitoring the fan speed in the above control method is no longer applicable.
  • the air volume generated by the fan can be monitored Or wind speed, in another embodiment, step S102 can also be eliminated, and the condensation state in the room can be directly obtained. That is, the anti-condensation control method can also be as follows:
  • S302 In the cooling mode, obtain the condensation state of the indoor wall surface, and determine whether to generate a decondensation signal according to the condensation state;
  • step S104 when the condensation state of the indoor floor is acquired, it may be acquired directly or indirectly.
  • the step of acquiring the condensation state of the indoor floor and judging whether to generate a decondensation signal according to the condensation state may include: when the lower air outlet starts to discharge the heat exchange airflow The discharge time of the airflow is timed.
  • the discharge time of the heat exchange airflow is greater than the second preset time (the value range of the second preset time may be [1h, 2h], for example, 1h, 1.5h, or 2h; that is, The value interval of the second preset time may be greater than or equal to 1 hour and less than or equal to 2 hours), and the decondensation signal is generated.
  • the condensation status of the indoor floor is obtained indirectly by monitoring the air outlet time of the lower air outlet.
  • the wind-out time is less than the second preset time
  • the default indoor floor has less condensation and there are no hidden safety risks.
  • the wind-out time is greater than the second preset time
  • the default indoor floor has a large amount of condensation and decondensation treatment is required.
  • a sensor can also be provided to directly sense the condensation state of the ground. That is, the step of acquiring the condensation state of the floor in the room includes: sensing the condensation state of the floor with a sensor.
  • the sensor may be an infrared sensor.
  • step S106 there are various means for raising the air outlet temperature of the lower air outlet of the indoor unit.
  • the air temperature can be increased by reducing the frequency of the compressor 50 of the air conditioner.
  • the frequency of the compressor 50 When the frequency of the compressor 50 is lowered, the frequency of a fixed value may be lowered, for example, the frequency is lowered by 10 Hz or 15 Hz. It is also possible to reduce the frequency of the compressor 50 to a fixed ratio of the original frequency, for example, the frequency of the compressor 50 is reduced to 50% or 60% of the original frequency. Regardless of the manner in which the frequency of the compressor 50 is reduced, in order for the compressor 50 to operate well, the frequency of the compressor 50 needs to be higher than 10 Hz.
  • the lower air outlet When the speed of the fan increases, the lower air outlet has a large air outlet and a strong air-drying effect, so the temperature of the air outlet can be appropriately lowered, and the frequency of the compressor 50 can be appropriately reduced.
  • the air conditioner When the fan speed is in the range of [490rpm, 670rpm], the air conditioner may have multiple outlet gears, but due to the different specifications of each air conditioner, the specific speed of the fan under each outlet gear cannot be determined. Therefore, in one embodiment, when the speed of the fan is in the range of [490rpm, 590rpm], the default fan is in the low wind range, which can be increased by reducing the frequency of the compressor 50 of the air conditioner to 50% of the original Outlet temperature.
  • the default fan When the speed of the fan is in the range of (590rpm, 670rpm), the default fan is in the stroke position, which can increase the temperature of the wind by reducing the frequency of the compressor of the air conditioner to 60% of the original. That is, when When the fan speed is greater than or equal to 490 rpm and less than or equal to 590 rpm, the default fan is in the low wind range. When the fan speed is greater than 590 rpm and less than or equal to 670 rpm, the default fan is in the mid-range position.
  • the temperature of the air outlet can also be increased by increasing the speed of the fan that blows out airflow outside the air outlet.
  • increase the speed of the fan by 20 rpm and 40 rpm.
  • the speed increase value may be larger when the original speed of the fan is smaller, and the speed increase value may be smaller when the original speed of the fan is larger.
  • the speed of the fan can be increased by 40rpm.
  • the speed of the fan can be increased by 20rpm.
  • the frequency of the compressor of the air conditioner can be reduced while increasing the rotation speed of the blower that ejects the airflow outside the air outlet to increase the temperature of the air outlet.
  • a heating component may be provided at the lower air outlet of the air conditioner to heat the heat exchange airflow discharged from the lower air outlet.
  • the air outlet temperature of the lower air outlet of the indoor unit can be raised to the indoor Above the dew point temperature. That is, after the temperature of the air outlet at the lower air outlet rises, the heat exchange air flow from the lower air outlet cannot increase the condensation on the ground, and the remaining condensation is naturally dried to achieve the purpose of removing condensation.
  • the temperature of the outlet air can also be raised above the ambient temperature of the room, which not only makes the condensation not increase, but also accelerates the evaporation rate of the generated condensation.
  • the air conditioner may have multiple outlet gears, but due to the different specifications of each air conditioner, the specific speed of the fan under each outlet gear cannot be determined. Therefore, in one embodiment, when the speed of the fan is in the range of [490rpm, 590rpm], the default fan is in the low wind range, which can be increased by reducing the frequency of the compressor of the air conditioner to 50% of the original Wind temperature. When the speed of the fan is in the range of (590rpm, 670rpm), the default fan is in the stroke position, and the temperature of the air can be increased by reducing the frequency of the compressor of the air conditioner to 60% of the original.
  • this embodiment exemplarily provides an optional process of the anti-condensation control method of the air conditioner:
  • the second aspect of the present invention also provides an air-conditioning indoor unit 10 that performs de-condensation treatment using the anti-condensation control method in any of the above embodiments.
  • the air-conditioning indoor unit may specifically be an air-conditioning cabinet
  • the machine includes an upper air outlet 11, a lower air outlet 12, a fan 42 and a controller 20.
  • the lower air outlet 12 is provided below the upper air outlet 11.
  • the controller 20 includes a memory 31 and a processor 32.
  • the memory 31 stores a computer program. When the computer program is executed by the processor, the anti-condensation control method according to any one of the above is implemented.
  • the indoor unit of the air conditioner further includes a sensor 33 for sensing the condensation state of the indoor floor 1.
  • the indoor unit of the air conditioner may further include a sensor that senses the position information of the human body.
  • the sensor is electrically connected to the controller.
  • the controller controls the heating element to heat the heat exchange airflow blown from the lower air outlet, specifically, the difference between the temperature of the heat exchange airflow led out of the lower air outlet and the indoor ambient temperature can be within 2 degrees Celsius. That is, the heating element has a first heating power.
  • the temperature of the heat exchange airflow led out of the lower air outlet is heated by the heating element to a difference of 2 degrees Celsius from the ambient temperature of the room.
  • the controller can turn off the heating element.
  • the heating element can also be used to remove condensation.
  • the controller can control the heating element to heat the heating element when decondensation is required, so that the temperature of the air outlet at the lower air outlet is high Indoor dew point temperature. That is, the heating element has a second heating power. When the heating element is under the second heating power, the temperature of the heat exchange airflow led out of the lower air outlet is heated by the heating element to a temperature above the dew point of the room.
  • the indoor unit of the air conditioner may further include a heating element 41, which is configured to heat the heat exchange airflows leading out of the lower air outlets when turned on, to Make the temperature of the heat exchange airflow led out of the upper air outlet equal to the temperature of the heat exchange airflow led out of the lower air outlet.
  • the temperature generated by the heating element is controlled by the controller in real time, but due to the lack of control accuracy, the temperature difference between the heat exchange air flow derived from the lower air outlet and the sub-heat exchange air flow derived from the upper air outlet can be actually within the range of 0.3 degrees Celsius. That is, the heating element has a third heating power. When the heating element is under the third heating power, the temperature of the heat exchange airflow derived from the lower air outlet is heated by the heating element to the temperature difference of the heat exchange airflow derived from the upper air outlet Within 0.3 degrees Celsius.
  • the heating element may be arranged in the lower air outlet so that the heat exchange airflow exchanges heat with the heating element when it is led out of the lower air outlet.
  • the heating element may be in the form of a net, and arranged to allow the heat exchange airflow to pass through the heating element and then lead out to the lower air outlet. This can increase the heat exchange rate between the heat exchange airflow and the heating element.
  • the heating element when it is in a mesh shape, it can completely cover the lower air outlet, that is, the heat exchange airflow must pass through the heating element to be led out of the lower air outlet.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

La présente invention concerne un procédé de commande anti-condensation destiné à un climatiseur. Le climatiseur comprend une unité intérieure de climatiseur, qui est disposée à l'intérieur. L'unité intérieure de climatiseur comprend une sortie inférieure d'air. Un flux d'air d'échange de chaleur soufflé à partir de la sortie inférieure d'air peut être dirigé vers le sol. Le procédé de commande consiste : dans un mode de refroidissement, à obtenir la vitesse de rotation d'un ventilateur, qui éjecte un flux d'air hors de la sortie inférieure d'air de l'unité intérieure ; lorsque la vitesse de rotation du ventilateur est supérieure ou égale à 490 tr/min et inférieure ou égale à 670 tr/min, à obtenir l'état de condensation du sol et à déterminer si un signal de décondensation est généré selon l'état de condensation ; et une fois que le signal de décondensation est généré, à augmenter la température de sortie d'air de la sortie inférieure d'air de l'unité intérieure et à continuer pendant un premier laps de temps prédéfini. Selon le présent procédé, on obtient d'abord la taille de sortie d'air du ventilateur du climatiseur et, lorsque la taille de sortie d'air est appropriée, on obtient l'état de condensation du sol. Si la quantité de condensation semble relativement grande, ce qui est très dangereux, la température de sortie d'air de la sortie inférieure d'air est augmentée pour effectuer un traitement de décondensation et le risque de glissement dû à la condensation est réduit pour les utilisateurs.
PCT/CN2019/090007 2018-12-27 2019-06-04 Procédé de commande anti-condensation pour climatiseur et unité intérieure de climatiseur WO2020133922A1 (fr)

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CN201811614181.1A CN111380142A (zh) 2018-12-27 2018-12-27 一种空调防凝露控制方法及空调室内机
CN201811614181.1 2018-12-27

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CN113847685B (zh) * 2021-09-10 2022-11-22 珠海格力电器股份有限公司 空调器的控制方法、装置、计算机可读存储介质与处理器
CN114484846B (zh) * 2022-02-23 2024-04-23 武汉海尔电器股份有限公司 壁挂式空调器及其凝露处理方法
CN115493288A (zh) * 2022-09-28 2022-12-20 珠海格力电器股份有限公司 一种防凝露控制方法、装置及地暖设备

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