Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1987-07-02
1989-04-04
Bartis, Anthony
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
126362, 219297, 219306, 219316, 219334, 417208, H05B 102, F24J 200, F24H 118, F24H 110
Patent
active
048188450
ABSTRACT:
An electric storage type water heater includes a tank having cold water introduced into the lower part thereof and an upper part connected by a hot water supply pipe to a faucet. A bubble pump arranged within an external heat insulator layer enclosing the tank includes a connection pipe connecting the upper and lower parts of the tank and forming a closed circulation loop in cooperation therewith. The connection pipe has a vertically extending intermediate pipe section closed at its lower end and having its upper end and an axially intermediate portion connected to the upper and lower parts of the tank, respectively, by upper and lower pipe sections. An electric heater associated with the intermediate pipe section heats the water therein to cause circulation through the closed loop. Check valves in the upper and lower pipe sections allow water to flow only in a direction from the lower part to the upper part of the tank.
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Koizumi Hisao
Oishi Yoshihisa
Bartis Anthony
Kabushiki Kaisha Toshiba
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