Device for transmitting heating or cooling medium to a substrate and an impingement type freezer containing the same

摘要

Device has food product heated or cooled by flow of heating or cooling medium. Medium is conveyed to food prod. via a device having input end, to which is directed a multidirectional flow of medium, and an output end from which unidirectional flow of medium is directed at the food prod. on substrate. Also claimed is a method for heating or cooling a food product. Flow controlling device is a number of inverted U-shaped channel members mounted to provide passages (36) between members so that multidirectional flow of heat transfer medium from fan or blower mounted above assembly is converted into unidirectional medium flow from bottom of passages (36) toward food product on conveyor. A member (64) is mounted above and traversed along length of channel members with rods (60) depending from member (64) into passages (36) with holes (62) through which fluid is dispensed to keep passages (36) free of frost.