Electric resistance heating devices – Heating devices – Tank or container type liquid heater
Patent
1999-01-15
2000-06-13
Leung, Philip H.
Electric resistance heating devices
Heating devices
Tank or container type liquid heater
392498, 392500, F24H 120
Patent
active
060759232
ABSTRACT:
A water heater includes: a reservoir having a feed pipe protruding inwardly into the reservoir for directing cold water into the reservoir; a main heater having a main thermostat sensor juxtapositionally secured in an immersion pipe section of the feed pipe inserted in the reservoir and a main electric heater electrically connected with the main thermostat sensor through a controller connected to a power source, whereby upon sensing of a preset high temperature by the main thermostat sensor, the main electric heater will be actuated to heat the water fed into the reservoir to the preset high temperature; and at least an auxiliary heater having an auxiliary thermostat sensor mounted in an outer pipe section of the feed pipe outside the reservoir and an auxiliary electric heater electrically connected with the auxiliary thermostat sensor, whereby upon sensing of a preset low temperature by the auxiliary sensor outside the reservoir, the auxiliary electric heater will also be actuated to heat the water in the reservoir in cooperation with the main heater for quickly heating the water in the reservoir and for quickly supplying warm water as discharged from the reservoir.
REFERENCES:
patent: 4455477 (1984-06-01), Wu
patent: 4680446 (1984-06-01), Post
patent: 5499621 (1996-03-01), Trihey
Campbell Thor
Leung Philip H.
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