Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1982-08-02
1986-11-11
Cline, William R.
Heat exchange
Movable heating or cooling surface
Rotary drum
165 71, 126420, 126422, 137151, 13762521, 13762546, 251250, B60H 100, F24J 240, F27F 2700
Patent
active
046216790
ABSTRACT:
A valve (10) for a water temperature control system having a heat exchanger (C), a tank (T), and a pump (P) for circulating heat transfer fluid through a supply line (11, 12, 13) from the tank to the heat exchanger and through a return line (14, 15) from the heat exchanger to the tank including a valve housing (20) interposed in both the supply line and the return line having supply inlet and supply outlet connections (24, 25), having return inlet and return outlet connections (26, 28), and having first and second drain connections (29), a valve element (45) associated with the valve housing having a first position for normally circulating the heat transfer fluid from the supply inlet connection to the supply outlet connection and from the return inlet connection to the return outlet connection and having a second position discontinuing circulation through the supply inlet connection and the return outlet connection and connecting the supply outlet connection to the first drain connection and the return outlet connection to the second drain connection. Actuation is provided for moving the valve element to the second position upon the occurrence of a reduction in the ambient temperature proximate the heat exchanger below a predetermined value, a loss of power to the valve, or a malfunction of the valve.
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Byers Hugo A.
Solomon Fred D.
Cline William R.
Ford John K.
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