A system, method and device for improving oil return reliability of inverter air conditioner
A frequency conversion air conditioner, reliable technology, applied in the field of air conditioner, can solve the problems of affecting the service life of the compressor, short-term oil return is not timely, and the oil volume of the compressor cannot be monitored in real time
Active Publication Date: 2022-02-22
NINGBO AUX ELECTRIC
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Problems solved by technology
At present, the oil return method used by the inverter air conditioner is to switch to the high-frequency and high-frequency forced oil return at regular intervals. It is impossible to monitor the oil volume of the compressor in real time, and it is impossible to carry out targeted oil return control according to the real-time status of the compressor. There is still the risk of poor lubrication or untimely oil return in a short period of time, which affects the service life of the compressor
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[0055] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0056] When the inverter air conditioner is running, when the refrigerant is discharged from the exhaust port of the compressor, a part of the lubricating oil will be taken away, and it will gradually deposit in layers in the evaporator and condenser. The loss of lubricating oil will cause inconvenience to the operation of the air conditioner. On the one hand, the oil stored in the heat exchanger will affect the cooling and heating effect of the air conditioner; life. At present, the oil return method used by the inverter air conditioner is specifically: if the compressor running frequency is lower than 58HZ for 180 minutes, it will enter the oil return operation. During mode conversion, manual stop or protective stop, the timer will not ...
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The present invention provides a system, method and device for improving the oil return reliability of an inverter air conditioner, which relate to the technical field of air conditioners, and include: obtaining the first frequency of the compressor, wherein the first frequency is the first frequency of the operation of the compressor The running frequency after a long period of time; judging whether the first frequency satisfies the oil return preset condition; if so, controlling the opening and closing of the oil return solenoid valve. The present invention is aimed at the frequency conversion air conditioner, by judging the operating frequency of the frequency conversion air conditioner, reasonably controlling the opening and closing time of the electromagnetic valve, ensuring that the oil brought out from the compressor with the refrigerant returns to the compressor as quickly as possible, and improving the oil return of the frequency conversion air conditioner reliability.
Description
technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a system, method and device for improving the oil return reliability of frequency conversion air conditioners. Background technique [0002] When the inverter air conditioner is running, the refrigerant is compressed into a high-temperature and high-pressure gas in the compressor. When it is discharged from the compressor exhaust port, a part of the lubricating oil will be taken away. The lubricating oil will gradually layer and deposit with the circulation of the refrigerant. in the evaporator and condenser. The loss of lubricating oil will bring inconvenience to the operation of the air conditioner. On the one hand, the oil stored in the heat exchanger will affect the heating effect of the air conditioner; on the other hand, the lack of lubricating oil in the compressor will lead to poor lubrication of the compressor and increased wear , seriously affecting th...
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IPC IPC(8): F25B31/00F24F11/30F24F11/61F24F11/64F24F11/70F24F11/86F24F11/89
CPCF25B31/004F24F11/64F24F11/61F24F11/86F24F11/30F24F11/89F24F11/70Y02B30/70
Inventor 李海利田涛张中强杨明登来盼盼
Owner NINGBO AUX ELECTRIC