Defrosting control method and device for air conditioner

A control method and technology of a control device, which are applied in refrigeration and liquefaction, space heating and ventilation, heating and ventilation control systems, etc., can solve problems such as user discomfort, time-consuming, and indoor temperature reduction, and reduce defrosting time. , speed up the defrosting speed, reduce the effect of reducing the range

Active Publication Date: 2017-12-26
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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  • Application Information

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Problems solved by technology

The existing defrosting method only relies on the heat of the high-temperature refrigerant, which ta

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  • Defrosting control method and device for air conditioner
  • Defrosting control method and device for air conditioner
  • Defrosting control method and device for air conditioner

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[0031] figure 1 Is a schematic diagram of the defrosting control method of the air conditioner according to the present invention; figure 2 Is a flowchart of a defrosting control method for an air conditioner according to an embodiment of the present invention; image 3 Is a schematic diagram of a control device for an air conditioner according to an embodiment of the present invention; Figure 4 Is a schematic diagram of a refrigeration cycle of an air conditioner according to an embodiment of the present invention; Figure 5 It is a schematic diagram of a heating cycle of an air conditioner according to an embodiment of the present invention.

[0032] The embodiment of the present invention provides a defrosting control method for an air conditioner. In the embodiment of the present invention, the air conditioner is a split heat pump type air conditioner that uses a vapor cycle refrigeration system to realize indoor cooling / heating functions. The air conditioner has an outdoor...

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Abstract

The invention provides a defrosting control method and device for an air conditioner. The defrosting control method comprises the following steps that when the heating mode of the air conditioner operates and when the situation that an outdoor unit meets the preset defrosting beginning condition is judged, the coolant circulating direction of the air conditioner is switched so as to enable the air conditioner to enter into the defrosting mode; the temperature Te of the surface of a heat exchanger of the outdoor unit and the outdoor environment temperature Ta are detected and compared; when the relation of Ta-Te>T is met, a fan of the outdoor unit is started; and when the relation of Ta-Te<=T is met, the fan of the outdoor unit is stopped. According to the defrosting control method for the air conditioner, the defrosting time can be shortened, and the indoor temperature decreasing amplitude caused by defrosting is decreased.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an air conditioner defrosting control method and control device. Background technique [0002] After the air conditioner has been running for heating for a period of time, it is necessary to defrost the heat exchanger of the outdoor unit. Most of the existing defrosting methods are real-time detection of the surface temperature of the heat exchanger of the outdoor unit. As long as the surface temperature of the heat exchanger of the outdoor unit is lower than the preset temperature, the four-way valve is controlled to change the refrigerant flow direction, so that the air conditioner enters the heating mode from the heating mode. In cooling mode, the high-temperature refrigerant discharged from the compressor is used to defrost the heat exchanger of the outdoor unit. The existing defrosting method only relies on the heat of the high-temperature refrigerant, which takes a l...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF25B2700/2103
Inventor 杨晓孙龙徐贝贝孙川川刘丙磊闫红波
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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