FIELD: air conditioning or ventilation.
SUBSTANCE: air heater comprises shell with branch pipes for supplying and discharging air, furnace provided with the burning device and chimney, and convection section made of pipes connected with collectors. The furnace is made of a cylindrical sleeve. The pipes of the convection section are arranged in staggered order around the furnace parallel to the cylindrical surface of the furnace. The inlet collector is mounted for permitting connection with the furnace from the side of the burning device, and outlet collector is connected with the chimney from the opposite side. There are transverse baffles between the shell and furnace.
EFFECT: enhanced efficiency and simplified structure.
2 dwg
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