Thermostatic safety valve for a hydraulic cooling circuit

Details Thermostatic safety valve for a hydraulic cooling circuit Thermostatic safety valve for a hydraulic cooling circuit

1993-06-24

1995-01-17

Tapolcai, William E.

Automatic temperature and humidity regulation

Cooling radiator

Bypass

236DIG2, F01P 716

Patent

active

053819519

ABSTRACT:
A thermostatic safety valve includes a cage (1) inserted in an engine cooling circuit and defining an upstream chamber (16) having a flow opening (5) and a downstream chamber (17) having a flow opening (6) with communication between the chambers being controlled by a compound moving valve member (15, 21) cooperating with a fixed seat (23) and carried by a thermostatic capsule (9) which is subjected to the opposing actions of a thermally expandable material (14) that it contains and springs (18, 22). The valve member comprises two elements, firstly a peripheral element (21) situated in the upstream chamber (16) and urged by a first spring (22) against the seat (23), and secondly a central element (15) integral with the capsule (9) and pressing against the downstream face of the peripheral valve element (21) by the action of the capsule and thermally expandable material (14) and moving away therefrom under the force of a second spring (18).

REFERENCES:
patent: 3498537 (1970-03-01), Wong
patent: 3558046 (1971-01-01), Kelly
patent: 3840175 (1974-10-01), Jacuzzi
patent: 4245782 (1981-01-01), Brown
patent: 4469275 (1984-09-01), DeSalve
patent: 4828167 (1989-05-01), Kuze
patent: 4978060 (1990-12-01), Stahly
patent: 5174496 (1992-12-01), Bourgin
patent: 5188287 (1993-02-01), Chamot

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