Water heater

Details Water heater Water heater

2005-09-20

2005-09-20

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Stand boiler

Heated by liquid or steam

C122S018100, C122S031100

Reexamination Certificate

active

06945197

ABSTRACT:
A water heater which includes a heat exchanger having a first passage and a second passage connected with the first passage, a gas burner mounted within the first passage, a push blower having an outlet conmected with the gas burner for forcing air into the gas burner, and a water reservoir mounted surrounding the heat exchanger, whereby when the gas burner is turned on, the push blower will be turned on to force air into the gas burner thereby forcing combustion air generated from fire of the gas burner to move along the first passage and meanwhile the pull blower will be turned on to extract the hot air out of the second passage.

REFERENCES:
patent: 4280450 (1981-07-01), Maruyama
patent: 5546760 (1996-08-01), Cook et al.
patent: 5816496 (1998-10-01), Kovacs
patent: 6223698 (2001-05-01), Lacaze

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