Patent ID: 9267700
Filing Date: 2016-02-23
CPC Classification: F24C,F24F,G01F

Claim Text:
1. An appliance comprising: a chassis and an internal housing including an electronics bay, said electronics bay containing electrical components; a blower; an air passageway for circulating air drawn from outside the appliance through the blower from the blower within and/or around at least one surface of the chassis and through the electronics bay; an air flow measuring device including a differential pressure unit, the air flow measuring device for measuring a rate of flow of air flowing through the air passageway, the air flow measuring device supported within the air passageway such that air flowing in the passageway flows against and around, but not through, the air flow measuring device; and a controller that monitors the air flow measuring device to calculate the air flow rate within the air passageway and which performs certain actions based on the measured air flow rate, wherein the differential pressure unit includes a double-cup flow detector having a first opening positioned within the air passageway essentially facing a direction of air flow through the passageway, a second opening opposite the first opening within the air passageway essentially facing away from the direction of air flow, and at least one pressure sensor for measuring the differential pressure between a stagnant pressure at a location within the first opening and a static pressure at a location within the second opening, and wherein a first cavity is defined at least in part by the first opening, a second cavity is defined at least in part by the second opening, and a solid partition physically separates the first cavity from the second cavity.