Electric resistance heating devices – Heating devices – Tank or container type liquid heater
Patent
1997-09-09
1999-04-27
Walberg, Teresa
Electric resistance heating devices
Heating devices
Tank or container type liquid heater
392441, 392443, 392451, 392454, 126344, 126362, A47J 2700
Patent
active
058988181
ABSTRACT:
A water feed system at constant temperature keeping the hot water from mixing with the cold water in a single tank, the cold water being fed during use of the hot water, comprising a cold water filing tube, a solenoid of controlling circuit and a double layer type hot water means with a single tank, characterized in that: a cold water flexible container such as a bag is provided above a hot water storage tank, a cold water feed tube is provided on the upper portion of the cold water container; and a cold water discharging tube is connected to the single hot water storage tank, whereby under the control of a control circuit, upon use of the hot water, the cold water is fed into the closed means above the hot water storage tank while upon nonuse of the hot water, the cold water in the flexible container is compressed into the hot water storage tank, thereby keeping the hot water in the hot water storage tank at a predetermined level.
REFERENCES:
patent: 3891817 (1975-06-01), Brown
patent: 5006689 (1991-04-01), Kurachi et al.
patent: 5067170 (1991-11-01), Nagachima et al.
Campbell Thor S.
Walberg Teresa
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