Temperature differential sensing and control device

Details Temperature differential sensing and control device Temperature differential sensing and control device

1975-02-28

1977-04-12

Wayner, William E.

Heating systems

Miscellaneous

Special liquid

733681, 126271, 236 91F, F24J 302, F16H 308

Patent

active

040170284

ABSTRACT:
Expansion of a fluid on increase in temperature is used to control a switch or other control output device. In one construction, two fixed quantities of fluid, separated by a flexible diaphragm, are in thermally-conductive contact with different respective regions, and change in the temperature relationship between the regions manifests itself as a change in the pressure across the diaphragm, thus displacing the diaphragm. Displacement of the diaphragm actuates a switch or a modulating control or indicating device. In other constructions, convective flow is used to influence a flow-sensitive device including a switch or a modulating control or indicating device.

REFERENCES:
patent: 1455633 (1923-05-01), Lundgaard
patent: 2211672 (1940-08-01), Reeder
patent: 3007017 (1961-10-01), Dwyer et al.

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