Oil pumping system for crankshaft and compressor with same

Abstract

The invention provides an oil pumping system for a crankshaft and a compressor with the same. The oil pumping system comprises an oil pump (1) used for pumping oil into an internal oil hole of the crankshaft. The oil pump (1) comprises a cylindrical pump core (11) and a cylindrical outer sleeve (12) which is connected to the radial outer portion of the pump core (11) in a sleeving mode. A preset distance is spaced between the radial inner wall of the outer sleeve (12) and the radial outer wall of the pump core (11), the spaced preset distance extends in the axial direction to form an annular groove so that the crankshaft can be inserted into the annular groove, and meanwhile the pump core (11) can be inserted into the oil hole. By means of the oil pumping system for the crankshaft and the compressor with the same, the radial spacing between an outer circular pipe and the inner wall of the oil hole in the prior art can be reduced, and therefore friction power consumption between the crankshaft and the oil pump is effectively reduced, and operational reliability, stability and safety of the oil pumping system are improved. The friction force of oil with the oil hole of the crankshaft and the outer surface of the pump core can be increased, and oil pumping capacity of the oil pumping system at the low frequency is improved.

Description

technical field [0001] The invention belongs to the technical field of compressors, and in particular relates to an oil pumping system for a crankshaft and a compressor having the same. Background technique [0002] The current traditional technology: the current fully-sealed piston compressor, the bottom of the compressor is composed of an oil pool, and the bottom of the compressor core is equipped with an oil pump, which is connected to the lower end of the motor rotor or crankshaft and kept concentric. When the compressor is working, The motor drives the oil pump to pump the oil to the parts that need to be lubricated, so as to meet the long-term and efficient operation of the compressor. At present, the main oil pump structure of fixed-speed compressors is a thin-walled circular tube with a large upper hole and a smaller lower hole, and a spiral or straight oil guide plate is inserted in the middle, which is called a centrifugal pump. The principle of pumping oil in this...

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Problems solved by technology

[0013] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the frictional power consumption between the oil pumping system and the crankshaft in the prior art is relatively large, thereby providing an oil pumping system for the crankshaft and a compressor having the same

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