Spring-loaded oil overflow valve for diaphragm compressors

Details Spring-loaded oil overflow valve for diaphragm compressors Spring-loaded oil overflow valve for diaphragm compressors

2005-02-08

2005-02-08

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C251S118000

Reexamination Certificate

active

06851449

ABSTRACT:
A diaphragm head with a high energy content of the oil space (pressure×volume) has a strong negative influence on the corresponding behavior of the oil overflow valve. The reaction of the valve leads to an undesirable increase in the opening time by which more oil is discharged than oil introduced by means of a compensation pump. This has the result that after multiple strokes the diaphragm is not driven to its dead position. With this, all of the compressed gas is not expelled which is accompanied by a rapid decrease of the suction capacity.The solution to this problem according to the present invention is achieved by means of a flow-interrupting edge formed at the junction of the valve seat and a restriction piece at the outlet side by which the operating forces of the valve spindle are sharply reduced. With this the effective closing force of the spring, as the dominant force component, leads to the desired fast closing time to the valve.

REFERENCES:
patent: 2969084 (1961-01-01), Raymond
patent: 6574960 (2003-06-01), Kleibrink

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