Patent ID: 6742515
Filing Date: 2004-06-01
Classification: F24C,Y10S

Abstract:
An air extraction apparatus for a work station, especially one at which heat is supplied to food, having formed on both sides of the work station respective air openings which are connected to a blower and a filter arrangement, whereinthe air openings (36, 38), the blower (26), the filter arrangement (28) and a region 42 located between the air openings (36, 38) and immediately above the work station (14), form a closed air circulation loop (48) which produces an air curtain (44) during operation of the air extraction apparatus (12) in the region between the air opening (36) on an upstream side of the work station (14) and the air opening (38) on a downstream side of the work station (14), the blower (26) and the filter arrangement (28) are housed in a space (24, 24â€²) which lies within the air cin.ulation loop (48) and is connected to the air openings (36, 38) on both sides of the work station (14), the air circulation loop (48) includes an air outlet (50) for a portion (52) of the air from the air circulation loop (48), the air outlet (50) being located downstream from the blower (26) and the filter arrangement (28), the blower (26) is located between at least two filters (30, 32) of the filter arrangement (28), the filter upstream of the blower (26) being a grease separating filter (30) and the filter downstream of the blower (26) being an odor filter (32), and the air circulation loop (48) has at least one vertical air channel (40) in the region below the work station (14), through which at least one vertical air channel the space in which the blower (26) and the filter arrangement (28) are housed is connected to one of the two air openings (36, 38) on both sides of the work station (14).