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Compressor frequency control method and device

A technology of compressor frequency and control method, applied in pump control, mechanical equipment, machine/engine, etc., can solve the problems of poor heating effect, insufficient, and inability to return oil to high-pressure side refrigerant in time, so as to achieve sufficient oil quantity and guarantee The effect of heating effect

Active Publication Date: 2017-06-13
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

[0007] The present invention provides a compressor frequency control method and device to at least solve the problems in the related art that the gas-liquid separator cannot return oil in time when there is a lot of liquid and the high-pressure side refrigerant is insufficient, resulting in poor heating effect

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  • Compressor frequency control method and device
  • Compressor frequency control method and device

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Embodiment Construction

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] An embodiment of the present invention provides a compressor frequency control method, figure 1 is a flow chart of a compressor frequency control method according to an embodiment of the present invention, such as figure 1 As shown, the following steps S102 to S104 are included.

[0026] Step S102, comparing the detected inlet pipe temperature and outlet pipe temperature of the vapor-liquid separator with the evaporation temperature of the system where the compressor is located.

[0027] Step S104, determine the current liquid storage state of the gas-liquid separator according to the comparison result, and control the frequency of the compressor according to the current liquid storage...

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Abstract

The invention discloses a method and device for controlling the frequency of a compressor. The method includes: comparing the detected inlet pipe temperature and outlet pipe temperature of the gas-liquid separator and the evaporation temperature of the system where the compressor is located; Determine the current liquid storage state of the gas-liquid separator, and control the frequency of the compressor according to the current liquid storage state. Through the present invention, the temperature of the inlet and outlet pipes of the gas-liquid separator and the evaporation temperature of the system are used to determine the current liquid storage state of the gas-liquid separator, and then control the frequency of the electronic expansion valve and compressor according to the current liquid storage state, so that the gas-liquid The oil-liquid mixture in the separator is transferred to solve the problem that the gas-liquid separator cannot return oil in time when there is a lot of liquid, so as to ensure that the compressor oil is sufficient, and the refrigerant returns to the high-pressure side in time to ensure the heating effect.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a method and device for controlling the frequency of a compressor. Background technique [0002] Vapor-liquid separator is a kind of refrigeration equipment. Its principle is to use the different density of steam and liquid particles to produce different inertial effects, so that the liquid particles carried in the return steam can be separated to prevent the compressor from sucking too much liquid particles. [0003] The gas-liquid separator is generally installed on the suction pipe of the compressor. The main function of the gas-liquid separator is to separate the liquid refrigerant from the gaseous refrigerant, and return a large amount of gaseous refrigerant to the compressor; secondly, to return the lubricating oil in the gas-liquid separator to the oil pool of the compressor. [0004] However, in related technologies, when a large amount of liquid returns to the system (fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/00
Inventor 傅英胜黄春宋培刚刘煜陈泽彬
Owner GREE ELECTRIC APPLIANCES INC
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