Thermostatic valve device having non-linear flow characteristics

Details Thermostatic valve device having non-linear flow characteristics Thermostatic valve device having non-linear flow characteristics

1980-06-16

1981-09-01

Tapolcai, Jr., William E.

Automatic temperature and humidity regulation

Cooling radiator

Bypass

251121, G05D 2312

Patent

active

042867509

ABSTRACT:
A thermally responsive valve device having non-linear flow characteristics. The valve device is particularly adapted to control fluid flow in an automotive coolant system. The thermally responsive valve device includes movable and stationary valve structure. A movable valve member is movable to create a flow passage and to adjust the open area thereof, but movement of the movable valve member provides a non-linear relationship between the area of the flow passage created and the distance of travel of the movable valve member. The stationary valve member is provided with a valve seat having a sloping encompassng wall so that with slight opening movement of the movable closure member a very limited volume of fluid flow is permitted. As the movable valve member continues to move in an opening direction, the non-linear relationship between the distance of movement of the movable valve member and the flow area created continues. The fluid flow gradually increases until a specific maximum flow rate is achieved. This operating characteristic eliminates or dramatically reduces temperature fluctuations in the coolant system.

REFERENCES:
patent: 1588695 (1926-06-01), Barrett
patent: 2114858 (1938-04-01), Rosch
patent: 2919860 (1960-01-01), Wagner
patent: 3129885 (1964-04-01), Freismuth
patent: 3391901 (1968-07-01), Wheeler et al.
patent: 3521852 (1970-07-01), Gillis, Jr.
patent: 3703273 (1972-11-01), Illing
patent: 3979105 (1976-09-01), Pool et al.

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