Improved compressor

Abstract

The invention provides an improved compressor, including shell body consisting of upper cover, lower cover and casing , the electric engine and pump body are equipped in the shell body, the electric engine includes a stator and a rotor, the pump body includes the upper bearings, the lower bearings, crankshaft and the cylinder, the electric engine connects with the pump body through the crankshaft in series one; its improvement lies in the fact that the said shell and the pump body are heat assembly;which makes bearings reduce thermal deformation and deformation of the cylinder corresponding decreases, in order to keep good performance of pump body; the thermal assembly is simple, does not require specialized equipment and welding wire, lower equipment costs, and the assembly process will not have a foreign body, to effectively improve the pass rate and product performance.

Description

1. Technical field [0001] The invention relates to a compressor, in particular to an improved compressor in which the connection mode between the pump body and the shell is changed. 2. Background technology [0002] Referring to Fig. 1, the existing compressor includes a casing composed of an upper cover, a lower cover and a casing, and a motor and a pump body are arranged in the casing, and the motor and the pump body are connected in series through a crankshaft. The connection method of the pump body and the casing It adopts three-point welding method (solder point B shown in Figure 1). The disadvantages of this connection method are: first, the upper bearing of the pump body is deformed by heat during the welding process, and the deformation is relatively large, which will cause the deformation of the cylinder of the pump body, thus affecting the working performance of the pump body; The welding method needs to have special equipment and welding wire, which increases the...

AI Technical Summary

Problems solved by technology

The disadvantages of this connection method are: first, the upper bearing of the pump body is deformed by heat during the welding process, and the deformation is relatively large, which will cause the deformation of the cylinder of the pump body, thus affecting the working performance of the pump body; The welding method requires special equipment and welding wire, which increases the cost of equipment; third, it is very easy for foreign objects to fall into the pump body during the welding process, which increases the defective rate of compressor products

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