Heat exchanger with heating by flame

Abstract

Abstract In the case of the heat exchanger (10) with heating by flame (11), above the burner (12) there is a directing device (13) for the heating gases which has one or more through-openings (15) for the heating gases. Arranged at a given distance thereabove is a waste gas-collecting chamber (18). It also has through-openings (21). Arranged at the intermediate space, serving as oven space (17), between the directing device (13) and the waste gas-collecting chamber (18) is in each case a heat-exchanger tube (16) which is aligned with one of the through-openings (15; 21) at the directing device and at the waste gas-collecting chamber, respectively. The edge region of each through-opening (15) of the directing device (13) is of nozzle-shaped construction, being oriented towards the oven space (18). Formed on each heat-exchanger tube (16) at a given distance from the lower end (15) is a fold which runs around it in the form of a ring and is deformed into the groove of the nozzle-shaped edge region until it comes to bear thereon. In addition, the end portion, adjoining the circumferential fold, of the heat-exchanger tube is deformed onto the raised underside of the nozzle-shaped edge region until it comes to bear thereon. <IMAGE>

Inventors

• 👤 Josef Teuber

Bibliographic Details