Patent ID: 9044789
Filing Date: 2015-06-02
Classification: B08B,F04D,F25B,F25D

Abstract:
1. A method for removing and cleaning of ice layers, snow layers and/or dirt layers from rotor blades of axial fans in a cooling installation for refrigerating and/or freezing products, comprising: directing at least one cleaning jet toward a suction side of the rotor blades of an axial fan and directing at least another cleaning jet toward a pressure side of said rotor blades within certain time intervals such that said layers are at least separated from surfaces of the rotor blades and transported away, the at least one cleaning jets comprising a gas selected from the group consisting of dehumidified compressed air, nitrogen, carbon dioxide; and mixtures of nitrogen and carbon dioxide, mixtures of nitrogen and dehumidified compressed air, mixtures of carbon dioxide and dehumidified compressed air, and mixtures of nitrogen, carbon dioxide and dehumidified compressed air, and rotating the rotor blades with nominal speed while the at least one of the cleaning jets act upon the surfaces of the rotor blades.