Frosting control method of air conditioner

A control method and air conditioner technology, which is applied to heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve the problems of uneven frosting on the outer coil and affect the defrosting efficiency of the air conditioner, and improve the defrosting efficiency , Eliminate the difference in frosting, the effect of uniform frosting

Active Publication Date: 2020-02-25
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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Problems solved by technology

[0003] Since the frosting speed and thickness of the outdoor unit are affected by the temperature of the outer coil and the wind speed, and the shunt flow of the outdoor heat exchanger cannot be completely consis

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  • Frosting control method of air conditioner

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[0016] 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 with reference to the accompanying drawings. Obviously, the described embodiments are some of the embodiments of the present invention, not all of them. Example. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

[0017] The defrosting control method of the present invention is mainly aimed at the air conditioner provided with the double fans on the outdoor unit. Specifically, in the air conditioner targeted by the present invention, the outdoor unit includes an upper fan and a lower fan, and the upper fan and the lower fan can rotate forward or reverse independently.

[0018] First refer to fi...

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Abstract

The invention belongs to the technical field of air conditioners, and particularly relates to a frosting control method of an air conditioner. In order to guarantee frosting uniformity of the air conditioner to improve defrosting efficiency, the defrosting control method of the air conditioner is provided for the air conditioner provided with double fans on an outdoor unit. The method comprises steps as follows: detecting a temperature t(upper) of the upper part of an outer coil pipe and a temperature t(lower) of the lower part of the outer coil pipe in a heating operation process of the air conditioner; detecting current I(upper) of an upper fan and current I(lower) of a lower fan under the conditions that t(upper) is lower than or equal to a dew point temperature and t(lower) is lower than or equal to the dew point temperature; controlling the revolution speed of the lower fan to be increased by first preset number of revolution if I(upper) is larger than I(lower); controlling the revolution speed of the upper fan to be increased by first preset number of revolution if I(upper) is smaller than I(lower); and controlling revolution speeds of the upper fan and the lower fan to be equal if I(upper) is equal to I(lower). According to the method, frosting uniformity can be controlled reasonably, frosting of the outdoor unit is more uniform, defrosting is facilitated by the aid of uniform frosting, and the defrosting efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a frosting control method for an air conditioner. 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 a...

Claims

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Application Information

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