AIR HEATER Russian patent published in 2007 - IPC F23L15/04 

FIELD: mechanical engineering; other industries; production and usage of the air heaters.

SUBSTANCE: the invention provides, that heating up of the air is exercised with the help of the leaving heat-transfer medium. The technical result of the invention is manufacture and repair simplification, the increased reliability and effectiveness of operation and maintenance. The air heater includes the channels of the heat-transfer mediums formed between the thin sheet plates collected in the package by means of the pins located near to the angular stepwise cut-outs of the plates of the spacing bands with holes for the pins and cut-outs near to their butts mounted along accordingly the lateral sides, the front and rear sides of plates. The package of the plates is limited by the lower and upper plates of rigidity with the ledge on their external side, on which the ends of the pins are mounted. The edges of the plates adjacent to the conforming bands are conjugated with their rounded lateral sides and have the bending of the counter direction, and their protruding and adjacent to each other edges are fixed in the clamping component. The front, rear and lateral edges of the extreme plates are adjacent accordingly to the ledges of the upper and lower plates of rigidity. The ledges, the butts of the plates, their cut-outs and the edges of the plates in the area of their cut-outs along their cutting lines form along the perimeters of the air heater faces the flat surfaces for installation of the pipe ducts of the heat-transfer mediums. The positive effect is the increased efficiency of manufacture and operation.

EFFECT: the invention ensures simplification of the air heater manufacture and repair, the increased reliability and effectiveness of its operation and maintenance.

4 cl, 8 dwg