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Defrost control method for air conditioner

A control method and technology for air conditioners, which are applied in heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve the problems of single defrosting process and low efficiency.

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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  • Defrost control method for air conditioner
  • Defrost control method for air conditioner

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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 a defrost control method for an air conditioner. In order to improve the defrost efficiency of the air conditioner, the defrost control method for the air conditioner is directed to the air conditioner with a bypass defrost circuit. The defrost control method includes the following steps that when the airconditioner needs to enter a defrost mode, an outdoor fan is controlled to stop rotating, and the bypass defrost circuit is started; after the outdoor fan stops rotating for a first set time, the outdoor fan is controlled to reversely rotate for a second set time; after the outdoor fan reversely rotates for the second set time, the outdoor fan is selectively controlled to reversely rotate again for the second set time according to at least one of t<top>, t<middle> and t<bottom>; when the outdoor fan is reversely rotating, the bypass defrost circuit is closed, and after the outdoor fan reversely rotates for the second set time, the bypass defrost circuit is started after time t; and the time t is determined according to an indoor temperature. According to the defrost control method for theair conditioner, the reverse rotating timing of the outdoor fan can be more accurately controlled, and the defrost efficiency of the air conditioner is 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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IPC IPC(8): F24F11/42F24F11/64F24F11/61F24F11/65F25B47/02F24F140/20
CPCF25B47/025F25B2347/02F24F11/42F24F11/61F24F11/64F24F11/65F24F2140/20
Inventor 许文明王飞张心怡袁俊军付裕罗荣邦
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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