Low profile exhaust hood

F - Mech Eng,Light,Heat,Weapons – 24 – C

Patent

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Details

F24C 15/20 (2006.01)

Patent

CA 2593242

A low profile exhaust hood has a high inlet and a high aspect ratio of horizontal to vertical. A sloping wall of the recess guides hot plumes upwardly to the inlet. The inlet is sized to provide an exhaust face velocity that is at least as high as a highest possible plume velocity for a 400 F oven. The inlet is located high and forwardly to cause a suction zone to be generated near the forward edge of the hood to aid in capturing plumes tending to escape which are remote from the sloping wall.

La présente invention a trait à une hotte d'extraction compacte comportant un orifice d'entrée et un rapport de forme élevé de l'horizontale sur la verticale. Une paroi inclinée de l'évidement oriente des panaches de chaleur vers le haut en direction de l'orifice d'ouverture. L'orifice d'ouverture est dimensionné pour fournir une vitesse de surface d'évacuation qui est au moins égale à la vitesse maximale possible de panaches pour un four de 400 F. L'orifice d'entrée est situé à une certaine hauteur et vers l'avant pour entraîner la génération d'une zone d'aspiration à proximité du bord avant de la hotte pour contribuer à piéger les panaches qui tendent à s'échapper en étant éloignées de la paroi inclinée.

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