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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

Inactive Publication Date: 2017-04-26
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a defrosting control method, device and air conditioner, aiming at solving the problem that the compressor stops running during defrosting and the system is interrupted during the entire heating, defrosting, and heating cycle operation of the current air conditioner. thermal process, which causes the problem of temperature fluctuations in the indoor environment

Method used

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  • Defrosting control method, defrosting control device and air conditioner
  • Defrosting control method, defrosting control device and air conditioner
  • Defrosting control method, defrosting control device and air conditioner

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no. 2 example

[0077] refer to Figure 5 , Figure 5 It is a schematic flowchart of the third embodiment of the defrosting control method of the present invention. Based on the second embodiment of the above defrosting control method, the method further includes:

[0078] Step S70, when the air conditioner is in the defrosting mode for a third preset time, and the temperature of the refrigerant heating device is lower than the third preset temperature and / or the temperature of the condenser is lower than or equal to the second preset temperature, send Frost failure prompt information;

[0079] Wherein, the third preset time is longer than the first preset time.

[0080] As mentioned above, the flow direction of the refrigerant in the defrosting mode used in the present invention is the same as that in the heating mode. The refrigerant heating device heats the refrigerant, and the heated refrigerant transfers heat to the condenser. If the refrigerant heating device cannot make the condense...

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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.

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 0°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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F25B47/02F25B49/02
CPCF24F11/30F24F11/41F25B47/02F25B49/02F25B2313/02741F25B2313/0292F25B2347/021F25B2400/01F25B2600/25
Inventor 霍军亚
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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