Patent ID: 7260901

Claim:
An apparatus for thermally conditioning objects comprising; a housing: at least two thermally conditioning facilities arranged one above the other in the housing and substantially over the same floor area, each thermally conditioning facility comprising a tunnel shaped cavity in which objects present within the cavity can be impinged by a stream of thermally conditioned air, the cavity being arranged in parallel with a corresponding tunnel shaped cavity of each of the other thermally conditioning facilities, such that a stream of thermally conditioned air passing through the cavity of one of the at least two thermally conditioning facilities is prevented from also passing through the cavity of any one of the remaining thermally conditioning facilities, wherein an air path on which the thermally conditioned air flows to a first thermally conditioning facility leads through a second thermally conditioning facility, and a conveying system, by which the objects can be moved through the tunnel shaped cavity; and a device disposed in the air path by which the passage of thermally conditioned air from the second thermally conditioning facility into the first thermally conditioning facility can be selectively interrupted.