Air conditioner filter monitor

Details Air conditioner filter monitor Air conditioner filter monitor

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 3/16 (2006.01) B01D 46/42 (2006.01) F24F 1/02 (2006.01) F24F 13/00 (2006.01) G01N 19/00 (2006.01)

Patent

CA 2119716

ABSTRACT: A filter monitor for indicating the condition of an air filter in a room air conditioner to determine whether the filter is clogged. The filter monitor assembly includes a shell mounted on the front of the air conditioner, with an air pressure equalization passage permitting air flow through the shell when a clogged air filter creates a negative air pressure inside the air conditioner housing. A signal flag within the shell is normally retracted by the force of gravity, but is visibly extended outside the shell by the pressure-induced air flow through the shell, indicating that the air filter is clogged. - 28 -

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