Air sterilisation apparatus

Abstract

The air sterilizer comprises a housing (1), at one end of which there is an air inlet unit (5) in which a fan (3) is arranged in a fixed manner; a spiral plate heat exchanger (2) arranged in the housing (1), in the center of which an electric heating unit (7) is arranged; an air outlet unit (6) at the other end of the housing (1); wherein the spiral plate heat exchanger (2) has an air inlet duct (31) running from the air inlet unit (5) to the electric heater (7) and a counterflow air outlet duct (32) running from the electric heater (7) to the air outlet unit (6), which ducts (31, 32) run helically next to each other. At one end of the housing (1) of the air sterilizer, adjacent to the air inlet unit (5), an air outlet (18) is formed on each side of the housing (1). Each side of the spiral plate heat exchanger (2) is sealed by an end cover. An air inlet (19) is formed on the end covers, which opens into the air inlet duct (31) running to the electric heating unit (7). A guide hole is formed in the end cover for a temperature sensor in which a temperature sensor is accommodated. In the spiral plate heat exchanger (2), there is a constant distance between the plates forming the air inlet duct (31) and the air outlet duct (32). The end covers have a heat-insulated side cover on each side of the air sterilizer, which side covers are sealed to the housing (1) and define a respective chamber which establishes flow communication between the air outlet and the air inlet on the same side of the air sterilizer.

Dependencies are inferred from the claim text.