Oil return structure and compressor with same

Abstract

The invention provides an oil return structure and a compressor with the oil return structure, the oil return structure is characterized in that a countersunk groove and a lubricating oil way are constructed on the side wall of an inner hole of an upper flange, and the lubricating oil way comprises a first upper oil groove extending upwards in the axial direction of the upper flange and a first lower oil groove extending downwards in the axial direction of the upper flange; a first backflow oil way communicated with the lubricating oil way is further constructed in the upper flange, an oil supply way is constructed in the crankshaft, and lubricating oil output from the oil supply way can enter the countersunk head groove and sequentially flows through the first upper oil groove, the first lower oil groove and the first backflow oil way to fall into an oil pool below the upper flange. According to the compressor, the complete oil return oil way with the oil ways communicated in sequence is arranged, the oil ways are not communicated in a crossed mode, the flowing direction of lubricating oil is clear, and therefore when the compressor operates at high frequency, the oil way can provide more lubricating oil for the upper flange.

Description

technical field [0001] The invention belongs to the technical field of compressors, and in particular relates to an oil return structure and a compressor having the same. Background technique [0002] At present, the lubrication of the working parts of the compressor relies on the lubricating oil circuit in the pump body to pump the lubricating oil to the contact surface of the moving parts for lubrication. In addition to the lubricating effect, the lubricating oil also has a cooling effect. When the compressor operates at a high frequency, the friction between the moving parts generates a lot of heat energy. If the pump oil volume is insufficient at this time, the heat dissipation will be insufficient, the pump body will heat up rapidly, the working chamber of the cylinder will be heated, and the volumetric efficiency will decrease; At the same time, with the rapid increase in exhaust temperature, the efficiency of the motor will decrease, which will eventually lead to a de...

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Problems solved by technology

[0003] Therefore, the present invention provides an oil return structure, which can overcome the problem that the upper flange cannot obtain a large amount of lubricating oil due to the unsatisfactory design of the oil return circuit in the crankshaft and the upper flange of the existing compressor. insufficient

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