Exhaust protection control method and system for air conditioner

A protection control and air conditioner technology, applied in heating and ventilation control systems, heating and ventilation safety systems, mechanical equipment, etc., can solve the problem of compressor start-up and shutdown, system logic judgment confusion, affecting system efficiency, compressor service life, etc. problem, to achieve the effect of improving efficiency and ensuring accuracy

Inactive Publication Date: 2018-04-20
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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Problems solved by technology

[0003] Although the method adopted by the above-mentioned traditional inverter air conditioner has played the role of exhaust protection, it has the following defects: simply based on the exhaust temperature to determine whether to enable frequency reduction or shutdown protection, the accuracy of the judgment cannot be guaranteed, resulting in frequent compressor fai

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  • Exhaust protection control method and system for air conditioner
  • Exhaust protection control method and system for air conditioner
  • Exhaust protection control method and system for air conditioner

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[0034] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the embodiments of the present invention and the accompanying drawings.

[0035] The exhaust protection control method of the air conditioner of the present invention judges whether to activate the exhaust protection according to the exhaust temperature and the duration of the temperature; when the exhaust protection is activated, the opening degree of the electronic expansion valve is first activated to adjust, if the adjustment fails, then Turn on frequency reduction protection; if it still fails, turn on shutdown protection. So as to ensure the accuracy of judgment, improve the efficiency of the system and the service life of the compressor.

[0036] The exhaust protection control system of the air conditioner proposed by the present invention includes an initial value ...

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Abstract

The invention discloses an exhaust protection control method and system for an air conditioner. The control method comprises the steps of setting an exhaust temperature threshold value T0 and an exhaust temperature duration threshold value t0; detecting the exhaust temperature T of a compressor and the temperature duration t; and comparing the exhaust temperature T with the exhaust temperature threshold value T0, comparing the exhaust temperature duration t with the time threshold value t0 and judging an exhaust protection mode of the compressor according to the comparison results. According to the method and the system, frequent frequency conversion or starting and stopping of the compressor can be effectively avoided, the use efficiency of the system can be improved, and the service lifeof the compressor can be prolonged.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to an air-conditioner exhaust protection control method and system. Background technique [0002] The discharge protection control method adopted by the traditional inverter air conditioner is that when the temperature sensing package at the discharge end of the compressor detects that the temperature of the refrigerant exceeds the limit value of the discharge temperature, the program of the controller issues an instruction to reduce the frequency of the compressor or use The compressor stops working, and when the exhaust gas temperature reaches a safe value, the controller issues an instruction to increase the frequency or start, so as to realize the protection of the compressor. [0003] Although the method adopted by the above-mentioned traditional inverter air conditioner has played the role of exhaust protection, it has the following defects: simply based on ...

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Application Information

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IPC IPC(8): F24F11/64F24F11/65F24F11/32F24F140/20
Inventor 秦自强曾凡卓孟红武张建鹏张龙爱谷月明
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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