Patent ID: 6013121
Filing Date: 2000-01-11
Classification: B01D,Y10S

Abstract:
An air conditioning device comprising:a housing defining an air inlet, an air outlet, an air flow path between said inlet and said outlet, a substantially planar first mounting surface for supporting said housing on a support surface in a given orientation, and a substantially planar second mounting surface for supporting said housing on the support surface in a predetermined orientation different than said given orientation;a blower disposed in the housing and arranged to move air in said air flow path from said inlet to said outlet;an air filter disposed in said air flow path;a tubulation defining a first end, a second end, and an inclined surface therebetween; said tubulation being arranged such that said second end is disposed above said first end with said housing in either of said given orientation or said predetermined orientation; and wherein said first end is in communication with a reference pressure source and said second end is in communication with said air flow path downstream of said filter; andan indicator member movable on said inclined surface between said first and second ends of said tubulation and being visible in at least said second end thereof; said indicator being movable between said first end and said second end in response to changes in the differential air pressure therebetween.