Reciprocating piston machine with capillary passages on valves f

Details Reciprocating piston machine with capillary passages on valves f Reciprocating piston machine with capillary passages on valves f

1997-09-12

1999-04-20

Freay, Charles G.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

417569, 417557, 1375135, F04B 3910

Patent

active

058952080

ABSTRACT:
A reciprocating piston machine (1) has an inlet valve (9) on the suction side and an outlet valve (10) on the delivery side, which valves exhibit a valve body having a valve disc (11, 12) comprising of an elastomer, whereby the compression chamber (6) sealed off by the reciprocating piston or similar displacer (2) and by the valves (9, 10) has a pressure relief connection between compression chamber and atmosphere. To be able to bring the compression chamber (6) quickly to atmospheric pressure after the reciprocating piston machine (1) has been put out of operation and to be able to bring about the restart of the reciprocating piston machine (1) so as to be load-free in this respect, the valve disc (11,12) of the valve (9, 10) on the delivery side and/or on the suction side has at least one capillary passage (18, 19) as pressure relief connection.

REFERENCES:
patent: 2019747 (1935-11-01), Taylor
patent: 2151746 (1939-03-01), Cody
patent: 2981197 (1961-04-01), Dolza
patent: 4743169 (1988-05-01), Funakawa et al.
patent: 5327932 (1994-07-01), Rozek
patent: 5567124 (1996-10-01), Takenaka et al.
patent: 5595214 (1997-01-01), Shaffer et al.
Eckert, E.R.G. and Drake, R.M. Jr., "Heat and Mass Transfer" McGraw-Hill, p. 153, 1959.

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