Air-conditioner defrosting system and defrosting control method

A technology of air conditioner and controller, applied in the field of air conditioner defrost system and defrost control, can solve the problems of user inconvenience and easy failure of the reversing valve, and achieve the effect of improving evaporation temperature and good comfort.

Inactive Publication Date: 2017-02-22
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process gives the user an uncomfortable feeling of alternating cold and hot. At the same time, if the defrosting is frequent, the reversing valve is more prone to failure, which brings inconvenience to the user.

Method used

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  • Air-conditioner defrosting system and defrosting control method

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore sh...

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Abstract

The invention relates to the field of air-conditioner technology and discloses an air-conditioner defrosting system which comprises a refrigerant circuit. The refrigerant circuit comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger connected through a pipeline, wherein the indoor heat exchanger is arranged in an indoor unit and the indoor unit is provided with an inner blower for indoor air supply. The air-conditioner defrosting system further comprises a bypass shunt, a pipe line temperature sensing bulb, an air-out temperature sensing bulb and a controller, wherein the bypass shunt is used for defrosting the outdoor heat exchanger; a first end of the bypass shunt is connected with the pipeline between the compressor and the indoor heat exchanger; a second end of the bypass shunt is connected with the pipeline between the throttling device and the outdoor heat exchanger and a regulating valve used for regulating the refrigerant flow is arranged on the bypass shunt; the pipe line temperature sensing bulb is used for testing the pipe temperature of the outdoor heat exchanger; the air-out temperature sensing bulb is used for testing the air-out temperature of the inner blower; the controller is in electric connection with the regulating valve, the pipeline temperature sensing bulb and the air-out temperature sensing bulb respectively. The air-conditioner defrosting system and defrosting control method can reduce the failure rate of a reversing valve, simultaneously, avoid blowing cold wind to users and improve comfortableness.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting system and a defrosting control method. Background technique [0002] At present, most of the heat pump air conditioners, in the heating mode, if the temperature of the tube in the outdoor heat exchanger is detected to be low to a certain temperature, it will send a defrosting signal to the controller, and the controller will change the direction of the air by controlling the reversing valve. , so that the refrigerant enters the cooling mode, and at the same time, the speed of the external fan is reduced or even the external fan is stopped, so as to realize the defrosting of the frosted part of the outdoor heat exchanger and avoid subsequent influence on heat exchange. When the tube temperature of the outdoor heat exchanger rises to a certain temperature, a signal to stop defrosting is sent to the controller, and the controller controls the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/04F25B47/00F25B49/02F25B41/20F25B41/42
CPCF25B47/006F25B49/02F25B2700/21F25B41/20
Inventor 邹大枢
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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