Compressor refrigerant oil backflow device and air conditioner

Abstract

The invention discloses a compressor refrigerant oil backflow device and an air conditioner. The device comprises a machine shell, a stator and a pump body are arranged in the machine shell, refrigerant oil is arranged at the bottom of the machine shell, a suction plate and a magnetic base are arranged in the machine shell, the suction plate is located above the stator, the magnetic base is located in the refrigerant oil and connected with the bottom of the machine shell, the upper end of the magnetic base is connected with the pump body, the magnetic base is electrically connected with the suction plate, an oil return pipe is vertically arranged in the machine shell, the upper end of the oil return pipe is connected with the suction plate, and the lower end of the oil return pipe is located in the refrigerant oil. Quantitative magnetic liquid is injected into a compressor, the density of the magnetic liquid is larger than that of the refrigerant oil, so that refrigerant oil particlesare attached to magnetic particles; and the magnetic fluid is adsorbed before a gaseous refrigerant flows out of a pipe orifice, so that the oil attached to the magnetic fluid returns to an oil pool at the bottom of the compressor along with a specific magnetic circuit to form a closed loop, and then the oil quantity in the compressor is kept constant.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a compressor refrigeration oil return device and an air conditioner. Background technique [0002] At present, after the refrigerated oil in the air conditioning system passes through the oil separator, part of the refrigerated oil will be brought into the refrigeration system together with the gaseous refrigerant. Since the refrigerated oil is trapped in the gaseous refrigerant and flows out of the compressor, it is difficult to recover, and effective measures must be taken. Oil return measures can make the refrigeration oil of the compressor replenished in time. Otherwise, if the oil level in the compressor is too low after running for a long time, oil level protection shutdown will occur, which will affect the normal use of the air conditioning unit. After turning on the machine again, it is still necessary to add additional refrigerant oil. Such a cycle will lead to an ex...

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Problems solved by technology

[0002] At present, after the refrigerating oil in the air conditioning system passes through the oil separator, some of the refrigerating oil will be brought into the refrigerating system together with the gaseous refrigerant. The gaseous refrigerant flows out of the compressor, which is difficult to recover. Effective oil return measures must be taken to replenish the refrigeration oil of the compressor in time. Otherwise, if the oil level in the compressor is too low after running for a long time, oil will appear. Bit protection shut down, affecting the normal use of the air conditioning unit

After turning on the machine again, it is still necessary to add additional refrigerant oil. Such a cycle will lead to an excessively high refrigerant oil content in the evaporator of the air-conditioning system, seriously affecting the heat exchange of the evaporator and affecting the efficiency of the unit. The existing oil return system oil separator is less effective. Poor, resulting in too much oil content in the fluorine system, unreasonable design of the oil return system, the refrigeration oil in the fluorine system cannot be returned to the compressor in time, with the accumulation of running time, the compressor will be short of oil, resulting in an oil level alarm and cannot be started normally

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