Patent ID: 6564473
Filing Date: 2003-05-20
Classification: F26B

Abstract:
A heat transfer apparatus comprising:a) a support element designed to receive a material thereon, the material having a surface oriented away from the support element and moving in a machine direction; b) at least one fluid supply designed to produce and discharge a fluid; c) at least one nozzle having an open area formed by an upstream wall and a downstream wall relative to the machine direction, the upstream wall and the downstream wall separated by an opening distance, the nozzle connected to the fluid supply and disposed generally adjacent to the support element and spaced apart therefrom so as to form an impingement distance between each wall of the nozzle and a plane generally corresponding to the surface of the material, wherein the impingement distance between the upstream wall and the plane is greater than the impingement distance between the downstream wall and the plane such that at least a portion of the fluid is delivered through the nozzle to a predetermined portion of the material in a direction that is counter to the machine direction; and wherein the fluid passing through the opening in the nozzle has a first flow rate passing out of the nozzle in the machine direction and a second flow rate passing from the nozzle in the direction counter to the machine direction, the second flow rate being greater than the first flow rate.