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Patent Searching and Data


Title:
BACKFIRE PREVENTING GAS CUTTING MACHINE
Document Type and Number:
WIPO Patent Application WO/2014/116032
Kind Code:
A1
Abstract:
The present invention relates to a backfire preventing gas cutting machine for cutting a workpiece by heating the workpiece using a preheating flame and injecting cutting oxygen. The present invention relates to the gas cutting machine, comprising: a valve bundle in which oxygen in a gaseous condition and fuel gas separately flow; and a nozzle bundle which is coupled with the valve bundle and in which fuel intakes are formed, wherein the nozzle bundle comprises: a tip having the fuel intakes formed at the front end thereof; and a head frame coupled with the tip. A cutting oxygen flow path for inducing the cutting oxygen introduced from the valve bundle to flow into the tip, an injecting flow path for inducing the preheated oxygen and the fuel gas introduced from the valve bundle to flow into the tip, and an injecting unit for enabling the laminar flow of the fuel gas through the injecting flow path by increasing a flow rate of the preheated oxygen introduced into the injecting flow path are formed onn the inside of the head frame. A cutting oxygen inlet hole connected with the cutting oxygen flow path and an injecting gas inlet hole connected with the injecting flow path are respectively formed at a rear end of the tip, and a mixing room having a broader cross sectional area than the cross sectional area of the injecting gas inlet hole is formed inside of the tip so as to generate combustible mixing gas from the preheated oxygen and the fuel gas introduced through the laminar flow from the injecting gas inlet hole.

Inventors:
LEE, Myung Hee (#, Inseon-gil 63,Siheung-si, Gyeonggi-do 429-736, 429-736, KR)
Application Number:
KR2014/000640
Publication Date:
July 31, 2014
Filing Date:
January 22, 2014
Export Citation:
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Assignee:
BOOL BOOL CO., LTD. (11, Dajigol-gil,Siheung-si, Gyeonggi-do 429-030, 429-030, KR)
International Classes:
B23K7/10; F23D14/42
Foreign References:
US6824735B22004-11-30
KR20070119434A2007-12-20
KR20120010594A2012-02-06
Attorney, Agent or Firm:
SEWON PATENT LAW FIRM (12F, Saimdang-ro 26,,Seocho-gu, Seoul 137-876, 137-876, KR)
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