Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent
1986-03-24
1987-07-21
Green, Randall L.
Stoves and furnaces
Tool having fluid fuel burner
Curling iron
236 99R, 251 75, 137 62, 137468, F24J 240, F16K 3144
Patent
active
046810889
ABSTRACT:
An automatic freeze protection valve apparatus for solar heaters is provided with a remote sensing element, remote from the valve itself and which operates in a non-modulating fashion. The valve includes a valve housing with a remote sensor operatively connected thereto from a remote position. The remote sensor includes a bulb containing a liquid adapted to compress and expand with the temperature adjacent the bulb. A piston located in the valve body is slidable therein responsive to the expansion and contraction of the liquid in the remote sensor. A valve element located in the valve housing and attached to the piston allows movement therewith. A valve seat positioned in a water passageway allows the flow of fluid therethrough when the valve is in an open position and to cut off the flow when the valve is in a closed position. The valve prevents modulation by biasing the valve to a closed position until a predetermined temperature is reached, and thereafter biases the valve in an open position so that a freeze protection valve for solar heaters is remotely located from the sensor and is non-modulating and is not affected by valve temperature.
REFERENCES:
patent: 1681911 (1928-08-01), Spencer
patent: 1699468 (1929-01-01), Grayson
patent: 1897155 (1933-02-01), Vaughn
patent: 1990747 (1935-02-01), Netschert
patent: 2394321 (1966-12-01), Couffer
patent: 2608352 (1952-08-01), Schuster et al.
patent: 2767733 (1956-10-01), Anderson
patent: 3108747 (1963-10-01), Nielsen
patent: 4344450 (1982-08-01), Walters
patent: 4557252 (1985-12-01), Dinh
Green Randall L.
Hobby III William M.
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