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Gas fuel burner and method for heating gas fuel burner

A gas fuel and burner technology, which is applied to the heating field of gas fuel burners and gas fuel burners, can solve the problems of slow combustion speed, flame blowing away, inability to speed up the flame flow rate, etc., and achieves the effect of high axial speed

Inactive Publication Date: 2017-10-13
NIPPON SANSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, when the object to be heated is a material that is easily oxidized, there is a problem that when the flame collides with the object to be heated, if there is a lot of unreacted oxygen, the oxidation of the object to be heated will be accelerated.
So if you speed up the oxygen and / or gaseous fuel jets in order to speed up the flame flow, you'll have blown the flame off, so you won't be able to speed up the flame
[0014] In addition, since the burner disclosed in Patent Document 1 has a structure in which gaseous fuel and oxygen are injected in parallel, the combustion speed is slow.
This will increase the oxygen concentration when it collides with the object to be heated, so when heating an easily oxidizable material, the generation of scale, etc. becomes a problem
[0015] On the other hand, although the burner disclosed in Patent Document 2 increases the axial speed of the flame by injecting oxygen from the center, since cutting is the main function, the oxygen concentration in the center of the flame is relatively high, which is not suitable for suppressing Problems in the application of heating while oxidizing the object to be heated

Method used

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  • Gas fuel burner and method for heating gas fuel burner
  • Gas fuel burner and method for heating gas fuel burner
  • Gas fuel burner and method for heating gas fuel burner

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no. 1 approach

[0040] figure 1 It is a cross-sectional view schematically showing the general structure of a main part of the gas fuel burner according to the first embodiment of the present invention. exist figure 1 Here, the X direction represents the direction in which the burner body 11 extends (in other words, a predetermined direction), and the Y direction represents a direction perpendicular to the X direction.

[0041] In addition, in figure 1 Medium, P 1 Indicates the direction in which the first oxidant is ejected (hereinafter referred to as "the first oxidant ejection direction P 1 ”), P 2 Indicates the direction in which the gaseous fuel is ejected (hereinafter referred to as "the gaseous fuel ejection direction P 2 ”), P3 Indicates the direction in which the second oxidant is ejected (hereinafter referred to as "the second oxidant ejection direction P 3 ").

[0042] refer to figure 1 , The gas fuel burner 10 of the first embodiment has a burner main body 11 , a gas fuel ...

no. 2 approach

[0107] figure 2 It is a cross-sectional view schematically showing the general structure of a main part of the gas fuel burner according to the second embodiment of the present invention. exist figure 2 Medium, P 4 Indicates the direction in which the third oxidant is ejected (hereinafter referred to as "the third oxidant ejection direction P 4 ").

[0108] In addition, in figure 2 in, right with figure 1 The same structural parts of the gas fuel burner 10 of the first embodiment shown are provided with the same reference numerals.

[0109] figure 2 The gas fuel burner 40 of the second embodiment shown is similar to the gas fuel burner 10 of the first embodiment except that a third oxidant injection port 41 is further provided in the structure of the gas fuel burner 10 of the first embodiment. same.

[0110] In the gas fuel burner 40 of the second embodiment, the third oxidizing agent injection port 40 is provided on the side surface 13 a of the combustion chamber ...

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Abstract

The present invention addresses the problem of providing a gas fuel burner and a method for heating the gas fuel burner that allows a high axial flame speed and a high temperature flame without losing combustion efficiency and that can suppress oxidation of the object to be heated and improve convection heat transfer efficiency. This gas fuel burner 10 comprises: a first oxidation agent ejecting port 17 that is disposed in the center C1 of a first circular face 13-1 constituting a combustion chamber 13 having a truncated cone shape that expands from the basal end toward the distal end of a burner body 11 and that ejects a first oxidation agent in the direction that the center axis CL1 of the burner body extends; a gas fuel ejecting port 18 that is disposed on the outside of the first oxidation agent ejecting port 17 and that ejects gas fuel in a direction intersecting the direction that the center axis CL1 extends; and a second oxidation agent ejecting port 19 that is disposed on a side face 13a of the combustion chamber 13 and that ejects a second oxidation agent in a direction intersecting the direction that the center axis CL1 extends.

Description

technical field [0001] The invention relates to a gas fuel burner and a heating method of the gas fuel burner which are suitable for heating objects to be heated by means of convection heat transfer. Background technique [0002] When the flame formed by the gas fuel burner directly collides with the object to be heated and heat transfer is performed by convection, the flame temperature is high and the axial speed of the flame is required to be fast. [0003] In addition, when the object to be heated is a material that is easily oxidized, there is a problem that oxidation of the object will be accelerated if there is a large amount of unreacted oxygen when the flame collides with the object to be heated. [0004] In addition, in the case of performing degreasing treatment using a burner flame as a pretreatment of an electroplating process for cold-rolled steel sheets, it is necessary to use a non-water-cooled burner. [0005] As a gas fuel burner that heats an object to be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/22F23D14/48
CPCF23D14/22F23D14/58F23D14/60F23D14/32
Inventor 山本康之饭野公夫
Owner NIPPON SANSO CORP
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