Heat-activated flue damper actuator

Details Heat-activated flue damper actuator Heat-activated flue damper actuator

1993-12-21

1995-02-28

Dority, Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Of or by exhaust damper or exhaust pump

122 131, 122 17, 126361, F23N 300

Patent

active

053932218

ABSTRACT:
A heat activated flue damper actuator employing an assembly of shape memory alloy springs with linkages to a conventionally designed contemporary flue damper. The combination of the spring material, spring configuration and dimensions, linkage/fastening scheme to the flue damper shaft and placement in the water heater's heating chamber are all controlled to optimize the energy efficiency of a conventionally designed, pilot-lit or pilotless ignition, contemporary gas water heater.

REFERENCES:
patent: 2508885 (1950-05-01), Mackay
patent: 4205293 (1980-05-01), Melton et al.
patent: 4896955 (1990-01-01), Zider et al.
patent: 5067957 (1991-11-01), Jervis

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