Compressor

Abstract

A compressor having a shell formed by mutually coupling shell constitution members that are a closed-bottomed container-like housing and a front housing into which a drive shaft is inserted, a compression chamber forming body provided in the shell, and a coupling element for coupling and fixing the compression chamber forming body and the shell constitution member to each other. The coupling element is extended only in the region where the shell is present, and a hole in which the coupling element extends and that is formed in the shell constitution member to which the coupling element is coupled does not penetrate the shell constitution member but terminates in the wall of the shell constitution member. In the compressor, sealing ability for leakage of refrigerant can be remarkably enhanced and restrictions on external piping and apparatuses are relaxed to significantly increase the degree of design freedom.

Description

TECHNICAL FIELD OF THE INVENTION [0001]The present invention relates to a structure of a compressor, and specifically, to a structure of a compressor which is suitable as a compressor for compression of refrigerant provided in a refrigeration cycle.BACKGROUND ART OF THE INVENTION [0002]In a compressor, especially in a compressor for compression of refrigerant provided in a refrigeration cycle (e.g., a compressor provided in a refrigeration cycle of an air conditioning system for vehicles), it is desired that refrigerant leakage is surely prevented, from a point of view to prevent performance degradation of the refrigeration cycle and to keep an amount of refrigerant filled in the refrigeration cycle as small as possible. Particularly in such a case that carbon dioxide that is recently being considered as an alternative refrigerant to fluorocarbon refrigerant is used as a refrigerant, the compressor further requires the refrigerant leakage prevention function since a higher-pressure ...

AI Technical Summary

Benefits of technology

[0013]Thus, in the compressor according to the present invention, a sealing performance against refrigerant leakage can be greatly improved, and in addition, restrictions on external pipes or external devices can be relaxed, thereby greatly increasing design freedom.

Problems solved by technology

Further, since bolt 29 is located at a relatively outer part in a radial direction, there is also a problem that a location at which a refrigerant pipe in the refrigeration cycle is connected to housing 21a is restricted, thereby decreasing a design freedom.

Further, there are similar requirements and problems also in another type compressor.

Furthermore, there are similar requirements and problems also in another type compressor.

In bolt sheet section 44, etc., similarly in the compressor depicted in FIG. 2, a higher sealing performance is desired and a problem of decrease in a design freedom exists.

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