Expansion valve and method for controlling it

Details Expansion valve and method for controlling it Expansion valve and method for controlling it

2005-03-03

2009-02-10

Jiang, Chen-Wen (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C236S09300A, C137S493800

Reexamination Certificate

active

07487647

ABSTRACT:
The invention relates to an expansion valve and to a method for controlling an expansion valve, in which the opening and closing movement of the valve-closure member is set as a function of the pressure difference which is present in a feed opening on the high pressure side and in a discharge opening.

REFERENCES:
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patent: 2654976 (1953-10-01), Jorgensen
patent: 3952535 (1976-04-01), Putman
patent: 5025640 (1991-06-01), Drucker
patent: 6286544 (2001-09-01), Miyazoe et al.
patent: 6311950 (2001-11-01), Kappel et al.
patent: 6430950 (2002-08-01), Dienhart et al.
patent: 6543239 (2003-04-01), Mittelstrass et al.
patent: 2005/0126218 (2005-06-01), Sohn
patent: 2006/0086116 (2006-04-01), Robin

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