Recirculating fan thermostat

Details Recirculating fan thermostat Recirculating fan thermostat

2007-01-02

2007-01-02

Norman, Marc (Department: 3744)

Automatic temperature and humidity regulation

Ventilator type

Electrically actuated

C236S00100H, C062S158000, C062S180000

Reexamination Certificate

active

10937572

ABSTRACT:
A programmable thermostat with a heat-cool switch, a temperature value input, and a fan switch with on, auto, and recirculating positions, and a microprocessor that superimposes a fan recirculating mode or cycle on the heat-cool or off modes or cycles by determining when the heat-cool or off cycles have been off for a user selectable time period; 2 hours, for example, and if so initiating a fan cycle for a predetermined time; 12 minutes for example, to provide a more uniform room temperature by mixing hotter and cooler air and cleaner air by running more space air through the heating and cooling system filter assembly.

REFERENCES:
patent: 4075864 (1978-02-01), Schrader
patent: 4838482 (1989-06-01), Vogelzang
patent: 5428964 (1995-07-01), Lobdell
patent: 5547017 (1996-08-01), Rudd
patent: 6318639 (2001-11-01), Toth
patent: 6988671 (2006-01-01), DeLuca

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