A protection control method and device for an air conditioner

A protection control and air-conditioning technology, applied in control input involving air characteristics, space heating and ventilation control input, heating and ventilation control system, etc., can solve problems such as large temperature fluctuations, damage to protectors, and poor user experience

Active Publication Date: 2019-11-05
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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  • Application Information

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Problems solved by technology

[0002] With the continuous improvement of people's living standards, the requirements for the use of air conditioners are also increasing. Fixed-frequency air-conditioning refrigeration in low-voltage and high-temperature environments will cause relatively high pressure in the air-conditioning system, high exhaust temperature, and large current. There are no measures for fixed-frequency air conditioners to control the speed of indoor fans in high-temperature and low-voltage environments, which will easily cause the overload protector of the compressor to operate, and the compressor will easily stop. It takes at least half an hour to restart after the overload protector operates. The temperature fluctuates greatly, the user experience is poor, and the compressor starts and stops for many times will easily cause damage to the protector

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  • A protection control method and device for an air conditioner
  • A protection control method and device for an air conditioner
  • A protection control method and device for an air conditioner

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Embodiment Construction

[0030] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods and procedures have not been described in detail so as not to obscure the present invention.

[0031] combined reference figure 1 As shown, the relationship between voltage and temperature and the action distribution range of the fixed-frequency compressor protector can be obtained. When the voltage is lower than 184V or higher than 253V, the compressor protector is in the non-A area, that is, it may act or act area, and the rest of the area is A area, that is, the closed area of ​​the compressor protector.

[0032] The embodiment of the present invention is used to solve the problem that when the air conditioner is running in a non-A zone, especiall...

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Abstract

A method and device for protection control of an air conditioner, which belongs to the technical field of air conditioners. The method comprises the following steps: acquiring the operation voltage of the air conditioner and the ambient temperature (S1); and when the operation voltage and the ambient temperature are outside of a preset range, reducing the revolution speed of an indoor fan (S2 and S3). The described technical solution solves the problem of when a constant frequency air conditioner is in a high temperature-low voltage environment, a compressor is liable to stop working due to the action of the overload protector of the compressor.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner protection control method and device. Background technique [0002] With the continuous improvement of people's living standards, the requirements for the use of air conditioners are also increasing. Fixed-frequency air-conditioning refrigeration in low-voltage and high-temperature environments will cause relatively high pressure in the air-conditioning system, high exhaust temperature, and large current. There are no measures for fixed-frequency air conditioners to control the speed of indoor fans in high-temperature and low-voltage environments, which will easily cause the overload protector of the compressor to operate, and the compressor will easily stop. It takes at least half an hour to restart after the overload protector operates. The temperature fluctuates greatly, the user experience is poor, and the compressor starts and stops repeatedly, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/50F24F11/64F24F11/77F24F110/10
CPCF24F11/00F24F11/50F24F11/64F24F11/77Y02B30/70
Inventor 景延芹李敬胜连建春杨文钧王彩平
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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