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Air conditioner defrosting control method

A control method and air conditioner technology, applied to heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve problems such as low efficiency and single defrosting process

Active Publication Date: 2020-02-25
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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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 specifically relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioners, the air conditioner defrosting control method is for the air conditioners with bypass defrosting loops. The method includes the following steps that when an air conditioner needs to enter the defrosting mode, an outdoor draught fan is controlled to stop rotating, and a bypass defrosting loop is started; after rotation stoppage of the outdoor draught fan lasts for the first set time, theoutdoor draught fan is controlled to rotate backwards for the second set time; according to at least one of t[upper], t[middle] and t[lower], the outdoor draught fan is selectively controlled to rotate backwards again for the second set time; and when the outdoor draught fan rotates backwards, the bypass defrosting loop is stopped, and after the outdoor draught fan rotates backwards for the second set time, the bypass defrosting loop is started the preset time later. By means of the air conditioner defrosting control method, the backward rotation opportunity of the outdoor draught fan can bemore precisely controlled, the number of blowback times of the outdoor draught fan is decreased, and the defrosting efficiency of the air conditioner is also greatly improved.

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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