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Air conditioner defrosting control method

A control method and technology for air conditioners, applied in heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve problems such as low efficiency and single defrosting process, achieve fast defrosting operation, reduce the number of blowbacks, and accurately control effect

Inactive Publication Date: 2020-02-25
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the defrosting process, there is a lack of auxiliary means to speed up the defrosting efficiency, resulting in a single defrosting process and low efficiency

Method used

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  • Air conditioner defrosting control method
  • Air conditioner defrosting control method

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Embodiment Construction

[0018] In order to make the embodiments, technical solutions and advantages of the present invention more obvious, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Example. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0019] The defrosting control method of the present invention is mainly aimed at an air conditioner with a bypass defrosting circuit. Those skilled in the art can understand that the bypass defrosting circuit of the air conditioner is set between the compressor of the air conditioner and the outdoor unit, and is used to introduce the high-pressure gas discharged from the compressor into the o...

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Abstract

The invention belongs to the technical field of air conditioners and particularly relates to an air conditioner defrosting control method. The air conditioner defrosting control method aims to improvethe defrosting efficiency of the air conditioner. The air conditioner defrosting control method is directed against an air conditioner with a bypass defrosting loop. The air conditioner defrosting control method comprises the following steps that when the air conditioner needs to enter the defrosting mode, an outdoor fan is controlled to stop rotation, and the bypass defrosting loop is started; after the outdoor fan stops rotation for a first set time period, the outdoor fan is controlled to rotate reversely for a second set time period; after the outdoor fan rotates reversely for the secondset time period, the temperature t<upper> of the upper part of an outer coiler, the temperature t<middle> of the middle of the outer coiler and the temperature t<lower> of the lower part of the outercoiler are detected; and according to at least one of the temperature t<upper>, the temperature t<middle> and the temperature t<lower>, the outdoor fan is controlled to rotate reversely for the secondset time period again. By the adoption of the air conditioner defrosting control method, the reverse rotation moment of the outdoor unit can be more accurately controlled, the number of times of reverse blowing of the outdoor fan is reduced, and the outdoor fan can more accurately and more efficiently blow off a molten frost layer.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. Background technique [0002] As a device that can adjust the indoor ambient temperature, the air conditioner works on the principle that the indoor ambient temperature is reduced or increased by the refrigerant passing through the circulation pipeline through high-pressure / low-pressure / gas / liquid state transitions, that is, from From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. When the air conditioner is in heating operation, if the temperature of the outdoor coil is too low under certain humidity conditions, it will cause frosting, and the frosting of the outdoor coil will reduce the heat exchange efficiency of the outdoor heat exchanger and affect the cooling performance of the air conditioner. The thermal effect reduces the comfort of the indoor environment and affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/64F24F11/61F24F11/65F25B47/02F24F140/20
CPCF25B47/025F25B2347/02F24F11/42F24F11/61F24F11/64F24F11/65F24F2140/20
Inventor 许文明罗荣邦
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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