Variable resistance temperature compensator

Details Variable resistance temperature compensator Variable resistance temperature compensator

1994-02-02

1995-04-04

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

236102, G05D 2302

Patent

active

054029350

ABSTRACT:
A compensation device receives an inlet fluid flow and adjusts the pressure at an outlet so as to maintain a constant Reynolds number throughout the operating temperature range of the fluid. This is accomplished by a metering valve device in the nature of a fluted pin which becomes displaced in response to fluid temperature variations. This displacement varies the exposed cross-sectional area of a fluted end of the pin as it becomes seated to a greater or lesser extent in response to temperature variations. This results in corresponding changes in pressure between the inlet and outlet of the device while maintaining a constant Reynolds number. An additional embodiment includes an unfluted pin which becomes seated in a fluted bore located in a removable knurled knob. This allows one to insert various knurled knobs with fluted bores which have geometric configurations particularly adapted for particular fluids. Such a modular approach avoids the necessity of dismantling the device.

REFERENCES:
patent: 2859768 (1958-11-01), Teague, Jr.
patent: 3294148 (1966-12-01), Alvarado
patent: 3696997 (1972-10-01), Gifford
patent: 3805840 (1974-04-01), Byers, Jr.
patent: 3980103 (1976-09-01), Drzewiecki
patent: 4852601 (1989-08-01), Chamberlin
patent: 5163476 (1992-11-01), Wessman
patent: 5174497 (1992-12-01), White

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