Expansion valve, in particular for a cooling-medium system

Details Expansion valve, in particular for a cooling-medium system Expansion valve, in particular for a cooling-medium system

2011-08-23

2011-08-23

Jones, Melvin (Department: 3744)

Refrigeration

Automatic control

Refrigeration producer

C062S527000

Reexamination Certificate

active

08001798

ABSTRACT:
The invention relates to an expansion valve, in particular for a vehicle air-conditioning system operated with cooling medium, with a valve seat (37) and a valve-closing element (39), which closes a passage opening (44) between a cooling medium inlet opening (14) and a cooling medium outlet opening (16), and with an actuating device (46) which acts on the valve-closing element (39) and opens and closes the passage opening (44), a shortened maximum working lift for opening the valve-closing element (39) out of the valve seat (37) being provided, at which a ball seat cross section formed between valve-closing element (39) and valve seat (37) is designed to be smaller than an annular gap cross section formed between a transmission pin (47) of the actuating device (46) and a passage opening (44).

REFERENCES:
patent: 3875757 (1975-04-01), Amano
patent: 6062484 (2000-05-01), Eybergen

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