Defrosting control method of air conditioner outdoor unit

A technology of air conditioner outdoor unit and control method, which is applied in the direction of heating and ventilation control system, mechanical equipment, heating and ventilation safety system, etc., and can solve serious problems such as frosting on the bottom of the outdoor heat exchanger, so as to increase the temperature and improve the use Experience and prevent serious effects of frosting

Active Publication Date: 2019-02-22
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a defrosting control method for an outdoor unit of an air conditioner, which solves the problem of serious frosting at the bottom of the outdoor heat exchanger in the prior art

Method used

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  • Defrosting control method of air conditioner outdoor unit
  • Defrosting control method of air conditioner outdoor unit
  • Defrosting control method of air conditioner outdoor unit

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Embodiment Construction

[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] Aiming at the serious problem of frosting on the outdoor heat exchanger when the air conditioner is in heating operation, this embodiment proposes a defrosting control method for the outdoor unit of the air conditioner. By controlling the openings of the two electronic expansion valves, the flow rate of the refrigerant is adjusted to prevent the frosting of the air conditioner. When it is hot, there is a serious problem of frosting on the outdoor heat exchanger. Next, the method for controlling the defrosting of the outdoor unit of the air conditioner in this embodiment will be described in detail.

[0039] An air conditioner includes an outdoor unit and an indoor unit, the outdoor unit includes a compressor, a four-way valve, and an outdoor heat exchanger, and the indoor unit includes an indoor heat exchanger, se...

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Abstract

The invention discloses a defrosting control method of an air conditioner outdoor unit. The coil pipe temperature Te of a flow dividing branch on the bottommost part is obtained, according to the temperature interval of Te, the opening degree of a first electronic expansion valve is controlled to the corresponding opening degree value of the temperature interval, the lower the temperature value ofthe temperature interval is, the larger the corresponding opening degree value is, the lower the temperature value of the temperature interval of the coil pipe temperature Te of the flow dividing branch on the bottommost part is, the larger the corresponding opening degree value of the temperature interval is, therefore, the opening degree of the first electronic expansion valve is larger, the refrigerant flow entering the flow dividing branch on the bottommost part can be increased, the temperature of the bottom of an outdoor heat exchanger can be increased, serious bottom frosting of the outdoor heat exchanger during air conditioner heating can be prevented, frosting of the outdoor heat exchanger is prevented, or the frosting of the outdoor heat exchanger is relieved to the maximum degree, the defrosting time is shortened, the continuity of heating running is increased, and the use experience of a user is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a defrosting control method for an outdoor unit of an air conditioner. Background technique [0002] In winter, when the air conditioner is heating and running, there will be frosting, and the bottom of the condenser of the outdoor unit is severely frosted; in addition, when the unit is defrosting, it usually switches to cooling mode, and the indoor unit stops blowing hot air, which affects the continuity of heating and affects users. Use experience. Contents of the invention [0003] The invention provides a method for controlling the defrosting of an outdoor unit of an air conditioner, which solves the problem of serious frosting at the bottom of an outdoor heat exchanger in the prior art. [0004] In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions to achieve: [0005] A defrosting co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/64F24F11/84F24F140/20
CPCF24F11/42F24F11/64F24F11/84F24F2140/20
Inventor 雷晏瑶王建营梁判
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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