Crankshaft for compressor and compressor with crankshaft

Abstract

The invention discloses a crankshaft for a compressor and the compressor with the crankshaft. The crankshaft comprises a first steel pipe, a second steel pipe, an upper thrust wall and a lower thrust wall. The first steel pipe is suitable for being sleeved with a rotor to be driven by the rotor to rotate. The second steel pipe is arranged on the first steel pipe in a sleeving manner, and the center axis of the second steel pipe deviates from the center axis of the first steel pipe. A piston is suitable for being arranged on the peripheral wall of the second steel pipe in a sleeving manner. The upper thrust wall is located at the top of the second steel pipe and arranged on the first steel pipe in a sleeving manner. The lower thrust wall is located at the bottom of the second steel pipe and arranged on the first steel pipe in a sleeving manner. According to the crankshaft, the weight of the crankshaft can be greatly lowered, the cost of the crankshaft is reduced, and the balance weight of a main balance block of the compressor can be reduced. Meanwhile, the steel pipes are high in strength, rigidity and wear resistance, and bearing wearing is reduced. Meanwhile, the eccentric mass of the compressor is lowered, the reliability of the compressor is improved, useless power consumption generated during high-speed running of the crankshaft is reduced, and the performance of the compressor is improved.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a crankshaft for a compressor and a compressor having the same. Background technique [0002] The crankshaft structure of the existing rotary compressor is an integral casting and is a solid casting, which is heavy, expensive and difficult to process. The mass of the solid eccentric circle constitutes the main part of the eccentric mass. The mass of the eccentric circle can affect the balance weight on the rotor and the centrifugal inertial force generated by the eccentric mass of the compressor that is not concentric with the axis, thereby affecting the reliability of the compressor. [0003] The function of the crankshaft is to transmit the power of the rotor to the pump body. The crankshaft needs sufficient rigidity, and the casting needs wall thickness to increase strength and prevent deflection and deformation from increasing bearing wear. The revolution of the crankshaf...

AI Technical Summary

Problems solved by technology

[0003] The function of the crankshaft is to transmit the power of the rotor to the pump body. The crankshaft needs sufficient rigidity, and the casting needs wall thickness to increase strength and prevent deflection and deformation from increasing bearing wear. The revolution of the crankshaft itself produces useless power consumption. The power consumption is related to the crankshaft. Weight related, detrimental to compressor performance

Images