Heating systems – Combined with water heater
Patent
1981-02-03
1986-06-03
Yuen, Henry C.
Heating systems
Combined with water heater
122 13R, 122367C, 122 32, 236 345, F22B 102
Patent
active
045925046
ABSTRACT:
A hot-water storage type hot-water supply apparatus operates under a natural circulation principle wherein hot-water is accumulated within a hot-water tank by circulating cold water or hot-water contained therein through a first circulation pipe connected to the bottom thereof, a heat exchanger, and a second circulation pipe. A thermal valve is mounted in the second circulation pipe downstream of the heat exchanger such that its opening area is varied depending upon the hot-water temperature in the second circulation pipe so as to maintain the temperature of the hot-water flowing out of the heat exchanger at a substantially constant temperature, resulting in the temperature distribution of the hot-water within the tank at the time of its boiling being kept substantially constant throughout the storage tank instantaneously at the start of the boiling of the hot-water.
REFERENCES:
patent: 2029574 (1936-02-01), Knudsen
patent: 2201406 (1940-05-01), Miller
patent: 3574302 (1971-04-01), Csathy
patent: 4165735 (1979-08-01), Smith
patent: 4222350 (1980-09-01), Pompei et al.
patent: 4245782 (1981-01-01), Brown
patent: 4248374 (1981-02-01), Sliger
patent: 4257553 (1981-03-01), Sliger
Mitsubishi Denki & Kabushiki Kaisha
Yuen Henry C.
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