Water heater
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United States of America Patent
Stats
-
Jul 14, 1981
Grant Date -
N/A
app pub date -
Jan 31, 1980
filing date -
Jan 31, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A water heater comprises an elongated vessel having a heat exchanger that occupies a substantial portion at one end and leaves a minimum volume storage and blending zone at the other end of the vessel. Water is recirculated through the heat exchanger, preferably continuously, through a recirculation conduit that takes water through its inlet essentially solely from the outlet end of the heat exchange zone and returns it to the inlet end, the intake of the recirculation conduit being located at the lower end of the volume storage and immediately above an apertured partition extending across the interior of the vessel immediately above the heat exchanger. The temperature sensor of the control thermostat is received within a tunnel secured to the partition. The tunnel has two side outlet openings away from the aperture so that the thermostat is always subject to the hottest water just above the heat exchanger for fast and accurate control of the heating fluid on failure of the circulating pump.
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