HEAT EXCHANGER FOR BAKING OVENS Russian patent published in 2020 - IPC F24C3/00 F24C15/32 

FIELD: heat exchange.

SUBSTANCE: group of inventions relates to a convective furnace with a heat exchanger intended for preparation of food products and operating on gas fuel or liquid types of fuel. Gas furnace consists of a baking chamber equipped with a bottom wall and a roof wall, a fan with a horizontal axis of rotation (X—X), a burner with a preliminary mixing system and a heat exchanger. Heat exchanger includes at least two bundles of tubes installed opposite to each other between place for inlet of flue gases, made with possibility of connection with gas burner of gas furnace, and outlet hole for flue gases, made with possibility of connection with exhaust manifold of said gas furnace. Each tube bundle comprises at least two pipe sections, each of which consists of at least one pipe. Said sections of tubes lie in planes parallel to each other, perpendicular to horizontal axis (X—X), and are connected to each other in series by means of at least one transfer element so that flue gases can pass through each of sections of pipes in direction opposite direction of flue gas flow in section of pipes lying in adjacent plane. Pipe sections are located overlapping each other next to each other, so that the contours of the pipe section lying in the first plane completely overlap—if viewed along horizontal axis (X—X)—contours of pipe sections located in the following planes.

EFFECT: disclosed is a heat exchanger for baking ovens.

14 cl, 32 dwg