Valve with a Laval nozzle and a method of metering a fluid

Details Valve with a Laval nozzle and a method of metering a fluid Valve with a Laval nozzle and a method of metering a fluid

1997-10-20

1999-10-19

Lee, Kevin

Fluid handling

Processes

251121, 251903, F16K 4700

Patent

active

059671645

ABSTRACT:
A valve with a Laval nozzle, a valve needle movable axially in the Laval nozzle, and an inlet chamber which receives the valve needle foot, in which chamber a radially extended inlet opening terminates. The inlet chamber is separated axially from the inlet plane of the Laval nozzle by a flow channel located therebetween. The inlet chamber is delimited by the valve needle on one side and by one of the valve needle housing sections surrounding the valve needle on the other side. This valve can be used in particular as a metering valve for metering a process gas for a reaction process in a motor vehicle operated by a fuel cell.

REFERENCES:
patent: 1698826 (1929-09-01), Shaffer
patent: 4413646 (1983-11-01), Platt et al.
patent: 5368273 (1994-11-01), Dante
patent: 5515674 (1996-05-01), Kaufmann et al.

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