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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 problems such as low efficiency and single defrosting process, and achieve the effect of improving defrosting efficiency and improving defrosting efficiency.

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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  • Defrosting control method for air conditioner

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Embodiment Construction

[0017] 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.

[0018] The defrosting control method of the air conditioner of the present invention is as follows: after the air conditioner enters the defrosting mode, the reverse time T of the outdoor fan is controlled every set time. Wherein, the time T is determined in the following manner: detecting the external environment temperature and the external coil temperature; comparing the external coil temp...

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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 the defrosting efficiency of the air conditioner, the method comprises the following steps that after the air conditioner enters a defrosting mode, an outdoor fan is controlled to reversely operate for time T every set time, wherein amethod for determining the time T comprises the following steps that an external environment temperature and an external coil pipe temperature are detected; the external coil pipe temperature is compared with a dew point temperature; and based on the external environment temperature, according to a comparison result, the time T is determined. According to the defrosting control method, after partof frost is melted each time, the reverse blowing effect of the outdoor fan is used for quickly blowing down a frost layer, and accordingly the defrosting efficiency is improved. The dual-judgement standard for the external environment temperature and the difference value between the external coil pipe temperature and the dew point temperature is used for controlling the time of reverse operationof the outdoor fan, so that the time of reverse operation of the fan each time is more precisely controlled, the melted frost layer is more accurately and efficiently blown down, and the defrosting 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): F24F11/42F24F11/64F24F11/61F24F11/65F25B47/02F24F140/20F24F110/12
CPCF25B47/025F25B2347/02F24F11/42F24F11/61F24F11/64F24F11/65F24F2110/12F24F2140/20
Inventor 许文明罗荣邦
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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