Defrosting control method for air conditioner

A control method and air conditioner technology, applied in the direction of control input involving air characteristics, space heating and ventilation control input, heating and ventilation control system, etc., to improve defrosting efficiency, improve comfort, and accelerate defrosting speed Effect

Inactive Publication Date: 2015-05-20
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a defrosting control method for an air conditioner, which solves the problem that the indoor unit releases cooling capacity to the environment when the air conditioner is defrosting, and significantly improves the comfort of the indoor environment

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  • Defrosting control method for air conditioner
  • Defrosting control method for air conditioner

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Embodiment Construction

[0035] In order to solve the problems of the prior art, the present invention proposes a defrosting control method for an air conditioner, such as Figure 4As shown, the air conditioner includes: a compressor 01, a four-way valve 15, an indoor heat exchanger 10, a first throttling device 25, an outdoor heat exchanger 20, and refrigerant pipelines. The compressor 01, the four-way valve 15. The indoor heat exchanger 10, the first throttling device 25 and the outdoor heat exchanger 20 are connected through refrigerant pipes; the refrigerant pipes include: the first refrigerant pipe 101, the second refrigerant pipe 102, the third refrigerant pipe 103, and the fourth refrigerant pipe Pipe 104, fifth refrigerant pipe 105, sixth refrigerant pipe 106, seventh refrigerant pipe 107, eighth refrigerant pipe 108, ninth refrigerant pipe 109, tenth refrigerant pipe 110 and eleventh refrigerant pipe 111; the air conditioner Also includes: the second throttling device 40, the first two-way va...

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Abstract

The invention provides a defrosting control method for an air conditioner. The air conditioner comprises a compressor, a four-way valve, an indoor heat exchanger, a first throttling device, outdoor heat exchangers, a refrigerant pipeline, a second throttling device, a first two-way valve and a second two-way valve. When defrosting begins, the second two-way valve is closed, and the first two-way valve is opened, a refrigerant sprayed by the compressor is divided into two branches at the second connecting point of the first two-way valve, wherein the main branch comprises the large part of refrigerant which flows to the first part heat exchanger of the outdoor heat exchangers to be used for defrosting, flows to the second part heat exchanger through the second throttling device to absorb heat and finally flows through the four-way valve to return into the compressor; the auxiliary branch comprises the other small part of refrigerant which flows through the indoor heat exchanger to exchange heat and flows through the first throttling device to join the main branch. In the defrosting process, the small part of the refrigerant flows to the indoor heat exchanger, an indoor unit has certain heat and does not have cold radiation, the problem that the indoor unit releases the refrigerating capacity to an indoor unit in the defrosting process of the air conditioner is solved, and the comfortable feeling of a user is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioner control methods, in particular to a defrosting control method for an air conditioner. Background technique [0002] During the heating operation of ordinary heat pump air conditioners, the temperature of the outdoor heat exchanger is lower than the freezing temperature of water, and frost will form. The frost layer increases the thermal resistance, reduces the total heat transfer coefficient of the heat exchanger, and weakens the heating effect of the system during heating. When the outdoor heat exchanger is frosted, the heating mode is switched to the cooling mode by switching the four-way valve for defrosting. In this mode of defrosting, although the indoor fan stops running, the indoor heat exchanger is in a low-temperature state, and there is a problem that the indoor heat exchanger releases cold air into the room, resulting in large fluctuations in the indoor temperature, which affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F25B47/02
CPCF24F11/30F24F11/41F24F11/62F24F11/64F24F11/70F24F11/83F24F11/84F24F2110/00F24F2110/10F24F2110/12
Inventor 郭瑞安韩雷周中华李潇陈军宇李俊峰吴会丽
Owner GREE ELECTRIC APPLIANCES INC
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