Crankshaft rotor assembly and compressor

Abstract

The invention provides a crankshaft rotor assembly and a compressor. The crankshaft rotor assembly comprises a crankshaft and a rotor; the crankshaft comprises a rotating axis, a crankshaft main bodyand a main eccentric part; the main eccentric part can be connected to the outer peripheral surface of the crankshaft main body; an eccentricity r3 exists between the mass centre of the main eccentricpart and the rotating axis in the radial direction; the rotor is provided with a central shaft hole for the crankshaft to penetrate through and comprises a main accommodating groove which is formed in the radial direction from the central shaft hole; and the position of the main accommodating groove corresponds to that of the main eccentric part, so that the main eccentric part is inserted into the main accommodating groove, and the main eccentric part is allowed to rotate in the main accommodating groove. Through the crankshaft rotor assembly, the main eccentric part which achieves a balancing effect is positioned in the rotor, so that the noises caused by shocking a main balancing block by the gas which is exhausted from exhaust holes in a silencer can be effectively reduced; the problems that the main balancing block is over-high and the increment of the noises caused by shocking the main balancing block by the gas which is exhausted from the silencer are solved; the cost can alsobe reduced; hidden danger of breakage of a balancing block is reduced; the problem about interference is solved; and the universality is improved.

Description

technical field [0001] The invention belongs to the technical field of compressors, and in particular relates to a crankshaft rotor assembly and a compressor. Background technique [0002] At present, double-cylinder bipolar compressors are widely used. The difference between the upper and lower cylinders of this type of compressor is not particularly large, so the load of the balance weight that the balance weight needs to play is small, resulting in a higher height of the eccentric part of the main and auxiliary balance weights of the double-cylinder compressor. Short, light weight and small shape. [0003] With the extensive use of powder metallurgy balance weights, the compressive strength and mechanical properties of the balance weights are slightly worse than the previously used casting balance weights. Since most of the powder metallurgy balance weights for double-cylinder bipolar compressors are of thinner structure, the rotor When riveting, it is easy to cause the ...

AI Technical Summary

Problems solved by technology

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the rotary compressor in the prior art that the main balance weight is too high, and the exhaust gas from the muffler impacts the main balance weight to cause increased noise, thereby providing a crankshaft rotor assembly and compressor

Images