Patent ID: 7823409
Filing Date: 2010-11-02
Classification: A23L,F25D

Abstract:
1. A freezer for cooling and/or freezing of products lying on a conveyor belt, and which are conveyed through a freezing zone for the freezing, where upper ejector plates are provided above the conveyor belt and lower ejector plates are provided below the conveyor belt for inflow of air into the freezing zone while applying an impingement principle, wherein each ejector plate comprises transverse return air ducts with orifices disposed in a plane of the ejector plates and facing the conveyor belt, and wherein the return air ducts are arranged so that return air, at least partly, is conducted transversely of a conveying direction of the conveyor belt through the freezing zone, and wherein each ejector plate comprises a hole pattern covering at least 70% of areas over the conveyor belt on which the products are placed, and wherein the return air ducts cover up to 30% of the areas over the conveyor belt on which the products are placed and wherein the return air ducts are arranged for conducting the return air transversely of a conveying direction of the conveyor belt in the areas in an immediate vicinity of the conveyor belt.