Dispensing – With casing or support – For bottom discharge dispenser supported on horizontal surface
Reexamination Certificate
1997-06-03
2001-01-30
Walberg, Teresa J. (Department: 3742)
Dispensing
With casing or support
For bottom discharge dispenser supported on horizontal surface
C222S146100, C392S441000, C392S444000
Reexamination Certificate
active
06179168
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a water heater system which is mounted in a water fountain housing below the refrigerated water reservoir and connected thereto and further incorporating a buffer means to prevent hot water from the hot water tank from flowing back into the refrigerated reservoir. The hot water reservoir is a gravity fed reservoir.
BACKGROUND ART
It is known to heat water from water dispensing fountains so as to dispense both refrigerated water or water at room temperature as well as hot water for the preparation of tea or instant coffee. With gravity fed water heaters incorporating water heaters, it is a common problem that water vapours are released back in the refrigerated reservoir thereby raising the temperature of the refrigerated water. By doing so, the compressor is continuously switched on to maintain the refrigerated water at a desired temperature. Accordingly, this results in excess energy consumption. Another problem with existing systems is that they utilize metal tubes and metal water heaters. Accordingly, there are soldered joints in connecting these metal parts and this results in the formation of rust and corrosion and eventually water leaks develop. The rust also often affects the quality of the water which is consumed.
SUMMARY OF INVENTION
It is a feature of the present invention to provide a gravity fed water heater system which is formed of plastics material and which is provided with a buffer means to prevent water from the hot water reservoir to flow back into the refrigerated water reservoir.
Another feature of the present invention is to provide a gravity fed water heater system which is of modular construction and easy to install and service.
Another feature of the present invention is to provide a gravity fed water heater system which is of modular construction and which may be adapted to certain existing dispensing fountains of the type having refrigerated water reservoirs.
According to the above features, from a broad aspect, the present invention provides a gravity fed water heater system for a water dispensing fountain having a refrigerated water reservoir. The water heater system comprises a hot water tank having a resistive heating element therein. Feed conduit means is provided and has a connecting end for securement to the refrigerated reservoir and for feeding water to the hot water tank. Buffer means is associated with the feed conduit means to prevent hot water from the hot water tank from flowing back and mixing with cold water in the refrigerated reservoir. Exhaust means is also associated with the hot water tank as well as dispensing means to dispense hot water from the tank. Means is provided to secure the hot water tank below the refrigerated reservoir of the water dispensing fountain.
REFERENCES:
patent: 1190289 (1916-07-01), Herz
patent: 2919142 (1959-11-01), Schultz
patent: 3150713 (1964-09-01), Loliger
patent: 3688950 (1972-09-01), Parish
patent: 3698603 (1972-10-01), Radcliffe
patent: 4792059 (1988-12-01), Kerner et al.
patent: 5567313 (1996-10-01), Almeida
patent: 4316219-A1 (1994-11-01), None
Desrosiers Andr{acute over (e)}
Morand Michel
Addico Products Inc.
Houle Guy J.
Lu Jiping
Swabey Ogilvy Renault
Walberg Teresa J.
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