Oil pumping apparatus of closed compressor

Abstract

The invention provides an oil pumping device for a hermetic compressor, which includes a crankshaft, an oil supply part, a shaft sleeve and a support platform. It is fixed on the bottom surface of the airtight container. The lubricating oil rail spring is statically installed inside the oil supply part of the oil pumping device. A certain gap is maintained between the bushing and the inner surface of the oil supply part. The inner upper end of the lubricating oil rail spring is The sleeve is pressed in, and the lubricating oil guide spring is extended and fixed to the lower part of the oil supply part. The lubricating oil guide spring is a cylindrical coil spring, and the oil circuit is formed by the bushing pressed into the lubricating oil guide spring and the inner surface of the oil supply part. The support platform is composed of a bottom frame and a support tube, the bottom frame is installed on the bottom surface of the airtight container, the support tube protrudes from the center of the bottom frame, and is pressed into the lubricating oil guide rail spring.

Description

technical field [0001] The invention relates to a hermetic compressor, in particular to an oil pumping device of the hermetic compressor. Background technique [0002] In conventional hermetic compressors, an oil pump is used to circulate lubricating oil in order to dissipate heat and lubricate heat-generating parts and sliding parts inside the hermetic compressor. Oil pumps are broadly classified into those that use the centrifugal force generated by the rotation of the crankshaft and those that use the viscous force of lubricating oil. [0003] Such as figure 1 As shown, an airtight space is formed inside the airtight container 1 . The airtight container 1 generally consists of an upper container and a lower container, forming a closed space inside. [0004] The inside of the airtight container 1 is roughly divided into a compression part and a motor part. The compression part performs compression of the working fluid; the motor part provides driving force for driving ...

AI Technical Summary

Problems solved by technology

[0014] The oil pumping device of the prior art hermetic compressor has the following problems: when using the U-shaped bracket 13 with elasticity, due to the gap between the oil suction part 11 and the oil supply part 40 arranged inside the oil supply part 40 The inaccurate setting of the gap makes the upward pumping of lubricating oil 21 not smooth

[0015] In addition, since the oil absorbing member 11 should be statically fixed to the oil supply member 40, it is not possible to form the oil absorbing member 11 and the oil supply member 40 into one assembly.

First, the oil supply part 40 is pressed into the lower end of the crankshaft 30, and the oil suction part 11 connected with the U-shaped bracket 13 is inserted into the oil supply part 40, and then the U-shaped bracket 13 can be fixed on the flow guide. board 4, which brings inconvenience to the assembly work

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