Valve Mounting Arrangement For a Refrigeration Compressor

Abstract

A valve mounting arrangement for a refrigeration compressor which presents a compression chamber closed by a valve plate having a suction orifice closed by a valve element having a mounting end portion. The mounting arrangement comprises: a first retaining means to retain the mounting end portion of the valve element inside a receiving recess of the valve plate; and at least one orientation projection carried by receiving recess and / or the mounting end portion of the valve element and to be fitted into an orientation recess in the other part; and / or a second retaining means provided between the receiving recess and the mounting end portion of the valve element, so as to avoid the latter from moving from the receiving recess before mounting the first retaining means.

Description

FIELD OF THE INVENTION[0001]The present invention refers to an arrangement for mounting a valve, which is not of the single piece type, in a refrigeration compressor, such as that used in small refrigeration systems.BACKGROUND OF THE INVENTION[0002]The energetic efficiency of the refrigeration compressors is mostly attributed to the good performance of their valves in the control of the gas flow.[0003]In the reciprocating refrigeration compressors, the compression of the refrigerant gas is achieved by movement of the piston, which is driven by a driving means, such as a mechanism of the connecting rod-crankshaft type, or by a linear motor. The piston reciprocates inside the compression chamber and, at the moment it begins to return from the upper dead point to the lower dead point, in its suction stroke, it draws the refrigerant gas from the suction line of the refrigeration system to which the compressor is coupled (that is, coming from the evaporator of the refrigeration system). ...

AI Technical Summary

Benefits of technology

[0011]Thus, it is an object of the present invention to provide a valve mounting arrangement for a refrigeration compressor, which allows providing and maintaining, in a simple and reliable manner, the positioning of a valve element on the valve plate.

[0012]Another object of the present invention is to provide an arrangement as cited above, which reduces the process steps of mounting the valve element on the valve plate.

[0013]An additional object is to provide an arrangement as cited above, which has a reduced cost.SUMMARY OF THE INVENTION

Problems solved by technology

In spite of this advantage, said construction presents a high cost due to the raw material that is consumed in the production of said suction valve.

Furthermore, such construction requires additional machining operations of the faces of the blank valve plate.

Nevertheless, although not presenting the constructive deficiencies of the single-piece suction valve, said solution has the disadvantage of requiring an additional process for mounting the valve plate assembly, which is required to guarantee the correct positioning of the valve element in the recess.

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