Defrosting control method, defrosting control device and air conditioner

A control method and technology of a control device, applied in the fields of devices, air conditioners, and defrosting control methods, capable of solving problems such as interrupting the heating process and fluctuations in indoor ambient temperature
CN106594991AInactive Publication Date: 2017-04-26GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
Publication Date
2017-04-26
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a defrosting control method, which comprises the steps of when an air conditioner operates at a heating mode, judging whether defrosting is required or not; if defrosting is not required, controlling the air conditioner to keep at the heating mode; if defrosting is required, controlling the air conditioner to switch the heating mode into a defrosting mode, controlling an operating mode of a four-way valve to be unchanged, controlling a compressor and an indoor fan to work continuously, switching on a refrigerant heating device to heat a refrigerant flowing into a condenser, and switching off an outdoor fan; and when the air conditioner is at the defrosting mode and reaches first preset time, switching off the refrigerant heating device, switching on the outdoor fan, and controlling the air conditioner to operate according to parameters corresponding to the heating mode. The invention further discloses a defrosting control device and the air conditioner. According to the defrosting control method, the defrosting control device and the air conditioner provided by the invention, during a whole heating, defrosting and heating period operation process, the compressor operates continuously, and the refrigerant continuously releases heat indoors when flowing through an evaporator, so that indoor temperature can remain stable.
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Description

technical field

[0001] The invention relates to the technical field of air conditioning, in particular to a defrosting control method, device and air conditioner. Background technique

[0002] During the heating process of the air conditioner in winter, the compressor compresses the refrigerant into a high-temperature and high-pressure gas, which supplies heat to the room through the evaporator. When the refrigerant flows through the condenser, the temperature is below 0Β°C, and it needs to absorb heat from the outside. The moisture contained in the air It will condense into frost on the surface of the condenser.

[0003] The adverse consequences of frosting in the air conditioner are: 1. Blocking the passage between the fins and increasing the air flow resistance; 2. Increasing the thermal resistance of the heat exchanger and reducing the heat transfer capacity; 3. Decreasing the evaporation temperature, reducing the energy efficiency ratio, and deteriorating the performance...

Claims

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