AIR HEATER WITH TOP HEATING Russian patent published in 2014 - IPC C21B9/10 F23D14/24 

FIELD: heating.

SUBSTANCE: air heater comprises a checker chamber and a combustion chamber, which includes a burner chamber and is located above the checker chamber. The burner system comprises a burner equipped with a fuel gas pipe, an air pipe for burning and a burner channel communicating with the burner outlet. The burner channel outlet is communicated with the combustion chamber. The burner channel to the middle is made with an inner diameter D1 and comprises a section with increased throughput cross section with an inner diameter D2.

EFFECT: use of invention provides for high efficiency of burning due to stabilisation of point of ignition inside burner channel and suppression of arising flicker phenomenon.

2 cl, 8 dwg