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1. (WO2014199015) BURNER NOZZLE, BURNER AND A SURFACE TREATMENT DEVICE

Pub. No.:    WO/2014/199015    International Application No.:    PCT/FI2014/050467
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Wed Jun 11 01:59:59 CEST 2014
IPC: F23D 14/02
F23D 14/58
B32B 37/06
Applicants: BENEQ OY
Inventors: ASIKKALA, Kai
MÄÄTTÄ, Tuomo
TAMMELA, Simo
Title: BURNER NOZZLE, BURNER AND A SURFACE TREATMENT DEVICE
Abstract:
A burner nozzle is disclosed, comprising a nozzle body that includes a slit such that a line passage to the slit opens in an outlet face surface at the surface of the burner nozzle body. A plurality of channels is connected to the slit. A group of first channels is connected to a source of oxidizing substance, and a group of second channels is connected to a fuel source. Each of the first channels and second channels have a circumferential passage to the slit at a non-zero distance from the outlet face surface. Furthermore, each of the first channels and second channels is formed to output a directed tubular flow towards a side wall of the slit, or towards a circumferential passage in a side wall of the slit. A safe pre-mixed burner configuration is achieved. A burner and a surface treatment device incorporating the burner nozzle are also disclosed.