Control method and system for preventing frequency fluctuation of air conditioner compressor

An air-conditioning compressor, frequency fluctuation technology, applied in heating and ventilation control systems, heating and ventilation safety systems, refrigerators, etc., can solve problems such as frequent compressor frequency fluctuations, and achieve the effect of improving reliability

Active Publication Date: 2016-11-23
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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  • Abstract
  • Description
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Problems solved by technology

[0007] The purpose of the present invention is to provide a control method for preventing the frequency fluctuation of the air conditioner compressor, wh

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  • Control method and system for preventing frequency fluctuation of air conditioner compressor
  • Control method and system for preventing frequency fluctuation of air conditioner compressor
  • Control method and system for preventing frequency fluctuation of air conditioner compressor

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Embodiment Construction

[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] There is a large difference between the pipe temperature sensor in the air conditioner and the actual temperature of the refrigerant, and there is a lag and jump between the temperature detected by the sensor and the actual temperature of the refrigerant. When the air conditioner is running for heating, if the air intake of the indoor unit is blocked, the internal pipe temperature will be overheated repeatedly, and the compressor needs to be reduced in frequency. The frequency of the compressor fluctuates frequently. Based on the above problems, the present invention proposes a solution that can ensure the stability of the frequency of the compressor under this working condition.

[0031] Specifically, such as figure 2 As shown, the control method for preventing the frequency fluctuation of the air conditioner compressor in this embo...

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Abstract

The invention relates to a control method and system for preventing the frequency fluctuation of an air conditioner compressor, which detects the coil temperature T of the indoor unit in real time during the heating operation of the air conditioner k ;If T is detected n consecutive times K = T 防高温降频 , and T K = T 防高温降频 cumulative time t 1 ≥t 设定 ;Reduce the target frequency of the compressor by F. When the present invention detects that the temperature of the coil of the indoor unit fluctuates frequently, the target frequency of the compressor in the anti-high temperature protection is lowered and corrected successively until the compressor can run stably at the target frequency to ensure the use effect of the air conditioner.

Description

technical field [0001] The invention belongs to the technical field of frequency control of air conditioner compressors, and in particular relates to a control method and system for preventing frequency fluctuations of air conditioner compressors. Background technique [0002] At present, the frequency conversion air conditioner generally uses the indoor heat exchanger coil temperature (inner pipe temperature) as the basis for controlling the system high pressure when the air conditioner is heating. The specific method is: according to the refrigerant thermal property table, find the saturation temperature corresponding to the refrigerant saturation pressure and set Prevent and protect the internal pipe temperature of frequency increase, maintenance, slow drop, fast drop and shutdown, control the operating frequency of the compressor according to the internal pipe temperature, control the high pressure of the system within a reasonable range, and improve the reliability of th...

Claims

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Application Information

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IPC IPC(8): F24F11/00F25B49/02
Inventor 姚兴
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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