Crankshaft, compressor, oil supply method of compressor and electric appliance

Abstract

The invention relates to the technical field of compressors, and discloses a crankshaft, a compressor, an oil supply method of the compressor and an electric appliance. The crankshaft comprises a longshaft, an eccentric part and a short shaft, and an oil pumping mechanism is further arranged in the short shaft. An inner oil path is formed in the eccentric part, an oil outlet of the inner oil pathis formed outside the eccentric part, and an oil inlet of the inner oil path communicates with the oil pumping mechanism. An outer oil groove communicates with the oil outlet of the inner oil path, and the oil pumping mechanism supplies oil to a friction pair of the crankshaft through the inner oil path and the outer oil groove. According to the crankshaft, the inner oil path and the outer oil groove are both formed in the eccentric part, oil holes are prevented from being directly formed in the long shaft and the short shaft, the hollow structure of a traditional crankshaft is improved, thenumber of oil outlet holes is reduced, the strength of the crankshaft is effectively improved, the risks of deformation, shaft breakage and the like are reduced, and the reliability of the compressoris improved; and oil can be supplied to the long shaft and the short shaft through the outer oil groove in the eccentric part, and overall oil supply smoothness is effectively kept.

Description

technical field [0001] The present application generally relates to a compressor, and in particular, relates to a crankshaft, a compressor, an oil supply method for the compressor, and an electrical appliance. Background technique [0002] The compressor is a driven fluid machine that upgrades low-pressure gas to high-pressure gas. It is divided into various types according to the structure. The common one is the rolling rotor compressor. The crankshaft is connected with the motor rotor to become the driving part of the compressor. , the crankshaft is driven by the motor to compress the refrigerant in the cylinder, the compressed refrigerant enters the muffler, and then enters the space between the muffler and the motor. The two sides of the eccentric part of the crankshaft form a major axis and a minor axis. The major axis and the upper flange, the minor axis and the lower flange, and the eccentric part and the rollers respectively form friction pairs. In order to ensure th...

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Problems solved by technology

However, this oil circuit structure has the following defects in use: the crankshaft itself has a major axis and a minor axis, and there are usually oil holes at the root of the major axis and minor axis or the eccentric part and the assembly surface of the balance weight, and the crankshaft is hollow at the same time. The structure of the crankshaft seriously limits the strength of the crankshaft, and there is a risk of broken shaft, which reduces the reliability of the crankshaft

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