| 摘要 |
A ventilating duct system including a plurality of ducts are disposed about an oven door on the face of an oven. Each duct includes a plurality of spaced openings to allow cool air from a source of cool air to be directed about the oven door. A first air feed duct extends from a distribution box to one corner of the duct system to direct cool air into a pair of ducts that meet and are connected at that corner. A second air feed duct is similarly connected to the other pair of ducts and to the distribution box. An infeed duct directs air to the distribution box. If desired, a control duct can be disposed in each of the ventilating ducts. The control ducts would be connected to the distribution box to receive the cool air therefrom and would be formed with spaced openings and would be movable from a position with its openings aligned with the openings in the ventilating ducts to facilitate the flow of cool air therefrom to positions out of alignment therewith. A damper valve may be disposed in the distribution to control the cool air flow therefrom in response to operation of a thermostat that senses the opening of the oven door. A similar cool air ventilating system may be used with a heated steam table or the like.
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