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Defrosting control method for air conditioner

A control method and technology for air conditioners, 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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  • Defrosting control method for air conditioner
  • Defrosting 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 defrosting control method for an air conditioner. In order to improve defrosting efficiency of the air conditioner, the defrosting control method for the air conditioner controls the air conditioner with a bypass defrosting loop. The method comprises the following steps: while the air conditioner needsto enter a defrosting mode, controlling an outdoor fan to stop rotation, and opening the bypass defrosting loop; after the outdoor fan stops rotation by first set time, controlling the outdoor fan toreversely rotate by second set time; after the outdoor fan reversely rotates by second set time, selectively controlling the outdoor fan to reversely rotate by second set time according to at least one of t-upper, t-middle and t-lower; while the outdoor fan reversely rotates, closing the bypass defrosting loop, and opening the bypass defrosting loop through time t after the outdoor fan reversely rotates by second set time; and determining the time t according to a difference value of I and Ie. The defrosting control method can control a reverse rotation opportunity of the outdoor fan more precisely, and greatly improves air conditioner defrosting efficiency.

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 许文明罗荣邦
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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