| 摘要 |
<p>The application relates to an apparatus for preparing food. The apparatus includes a housing (1), a food preparation chamber (4) in the housing (1) having an inner wall (5) defining a food receiving space (6) with an air entry aperture (10) and an air discharge aperture (13), a fan (14) for moving a flow of hot air successively through the air entry aperture (10), the food receiving space (6) and the air discharge aperture (13), and an air guide passage (7) for returning the flow of air from the air discharge aperture (13) towards the air entry aperture (10) separate from the food receiving space (6). The housing (1) comprising a cooling air channel (30) and a hot air vent (20) for exhausting the flow of hot air from the food preparation chamber (4) to outside the housing (1) with a constricted section (29) having a reduced cross-sectional area such that a venturi effect is generated in the hot air vent (20). An outlet (35) to the cooling air channel (30) communicates with the hot air vent (20) at the constricted section (29) such that a region of low pressure is formed at the outlet (35) and a flow of cooling air is drawn along the cooling air channel (30) and into the hot air vent (20).</p> |
