Heat exchange – With timer – programmer – time delay – or condition responsive... – Temperature responsive or control
Patent
1995-11-03
1997-04-29
Wayner, William E.
Heat exchange
With timer, programmer, time delay, or condition responsive...
Temperature responsive or control
165294, 4676, 236 122, B60H 100, G05D 2300
Patent
active
056239904
ABSTRACT:
A combined safety shower and eyewash station utilizes steam to heat water in a heat exchanger. Cool water is combined with heated water from the water outlet of the heat exchanger by a temperature-regulated mixing valve. If the water at the water outlet of the heat exchanger becomes too hot, some of the water is fed to the steam inlet of the heat exchanger. This makes it easy for the mixing valve to regulate water temperature even though the shower uses water at a much higher rate than does the eyewash station. Steam is fed to the heat exchanger through a steam valve which is opened automatically when a demand for warm water is sensed by a pressure-drop flow sensor. An overtemperature responsive actuator overrides the demand sensor to shut off the steam. A steam trap at the inlet of the steam valve eliminates cold condensate so that the apparatus is able to deliver warm water substantially immediately upon demand.
REFERENCES:
patent: 2455498 (1948-12-01), Kern
patent: 2610837 (1952-09-01), Puster
patent: 3232336 (1966-02-01), Leslie et al.
Texan Corporation
Wayner William E.
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