Pump body assembly and compressor

Abstract

The invention provides a pump body assembly and a compressor. The pump body assembly comprises a crankshaft (1), an upper flange (2) and a lower flange (3); the crankshaft (1) comprises a long shaft (4) which is matched with the upper flange (2) and a short shaft (5) which is matched with the lower flange (3); the range of the ratio of the shaft diameter of the long shaft (4) to the axial height of the upper flange (2) is 0.25 to 0.45; and / or the range of the ratio of the shaft diameter of the short shaft (5) to the axial height of the lower flange (3) is 0.55 to 0.75. According to the pump body assembly provided by the invention, the friction power consumption of the compressor in a working process can be reduced, and the work performance of the compressor can be improved.

Description

technical field [0001] The invention belongs to the technical field of compressors, and in particular relates to a pump body assembly and a compressor. Background technique [0002] The working principle of the existing rolling rotor compressor is as follows: the motor stator generates magnetic pulling force after being energized, and the motor rotor rotates under the action of the magnetic pulling force of the stator, and drives the crankshaft of the pump body to rotate together, and the rotation of the crankshaft drives the sleeve in the The roller of the eccentric part performs eccentric circular motion in the cylinder, and the sliding vane is installed in the sliding vane groove of the cylinder. Under the action of the pump spring, it always withstands the roller and reciprocates in the sliding vane groove. The cylinder is divided into a high-pressure chamber and a low-pressure chamber, and the crankshaft drives the roller to rotate once to inhale air from the low-pressu...

AI Technical Summary

Problems solved by technology

[0003] High-efficiency design of compressors has always been a trend. The energy efficiency ratio of compressors is the ratio of cooling capacity to power consumption. Therefore, the most important means to improve compressor energy efficiency is to reduce compressor power consumption. Consumption accounts for a large proportion of the power consumption of the compressor. The friction power consumption of the moving parts in the compressor is mainly generated by the following parts: 1. The friction between the long axis of the crankshaft and the inner diameter of the upper flange; 2. The short axis of the crankshaft and the lower flange. Friction between flange inner diameters; 3. Friction between crankshaft eccentric part and roller inner circle; 4. Friction between slider head and roller outer circle; 5. Slider plane and cylinder slider groove plane 6. The friction between the thrust surface of the crankshaft and the lower flange plane; among them, the friction power consumption of 1 and 2 accounts for a large proportion of the total friction power consumption of the compressor, so it has a great impact on the performance of the compressor Adverse effects of

Images