Fuel economizer

Details Fuel economizer Fuel economizer

2011-03-29

2011-03-29

Jiang, Chen-Wen (Department: 3784)

Automatic temperature and humidity regulation

With timing element

Timer other than clock

C236S011000, C165S247000

Reexamination Certificate

active

07913927

ABSTRACT:
An electronic circuit for a hot water heating system conserves fuel consumption and reduces carbon dioxide emissions. A heating system includes a burner that heats water and a room thermostat. The electronic circuit comprises an override thermostat which has a setting for a lower temperature limit and an upper temperature limit below those of the room thermostat. The override thermostat is operable to activate continuous operation of the burner when the indoor temperature falls below the lower temperature limit of the override thermostat and until the upper temperature limit of the override thermostat is reached. The electronic circuit further comprises a timer operable to deactivate and reactivate the burner while the room thermostat is calling for heat.

REFERENCES:
patent: 4136730 (1979-01-01), Kinsey
patent: 4369916 (1983-01-01), Abbey
patent: 4408711 (1983-10-01), Levine
patent: 4667874 (1987-05-01), Johnson et al.
patent: 4842044 (1989-06-01), Flanders et al.
patent: 2010/0025489 (2010-02-01), Sambrook

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