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Anti-flashback nozzle and combustion device with the same

A technology of combustion equipment and nozzles, which is applied in the field of flame-type heating equipment and anti-backfire nozzles. It can solve problems such as complexity, affecting the temperature of the furnace body, and poor flame stability, and achieves simplified installation, high nozzle adjustment ratio, and high flame stability. Effect

Active Publication Date: 2008-12-03
ECLIPSE COMBUSTION EQUIP SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure is not only complicated, but also will extinguish the flame, and its flame stability is poor, and it will affect the temperature in the furnace body.

Method used

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  • Anti-flashback nozzle and combustion device with the same
  • Anti-flashback nozzle and combustion device with the same
  • Anti-flashback nozzle and combustion device with the same

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Embodiment Construction

[0043] attached figure 1 Shown as a preferred embodiment of the present invention, it discloses the internal structure of the anti-backfire nozzle of the present invention, accompanying drawing 2 discloses the internal structure of a kind of combustion equipment with above-mentioned anti-backfire nozzle, below in conjunction with accompanying drawing to this The working principle and structure of the invention are introduced in detail.

[0044] A kind of combustion equipment, it comprises: a furnace body 13, a burner 14 partially located in the furnace body 13, a circulation fan 15 arranged in the furnace body 13, a flue exhaust duct 16 connected to the outside world, wherein the circulation fan 15 After the airflow in the furnace body 13 is drawn out, it is discharged through its air outlet. Part of the airflow blown out from the air outlet enters the exhaust duct 16 and becomes exhaust gas, and part of it exchanges heat with the flame of the burner 14 and remains in the exha...

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Abstract

The invention relates to an anti-backfire nozzle for a gas burner and a burning device by adopting the nozzle. The nozzle particularly comprises a shell. A fuel passage, a combustion supporting gas passage, a mixing chamber positioned at the downstream of the fuel passage and the combustion supporting gas passage and a spout are arranged in the shell; the mixing chamber has N-stage mutually-communicating cavities. On the radial section of the nozzle, the cross-sectional area of the cavity positioned at the upstream is smaller than that of the adjacent cavity at the downstream. When little circulating gas enters the cavity at the downstream, the mixed gas is burned in the cavity at the downstream and the adjacent cavity at the upstream. With the sharp increase of pressure of combustion products, the combustion products are instantly jet out of the nozzle, thereby preventing the flame from being blown off by the circulating gas flow. Since the nozzle is specially provided with the anti-backfire structure, the burning device with the nozzle is adaptable to reversal convection blowing, provides good working hot gas flow and ensures good stability and high regulation rate of the nozzle flame.

Description

technical field [0001] The invention relates to a nozzle of a gas burner and a combustion device with the nozzle, in particular to a backfire prevention nozzle for a heat treatment furnace and a flame type heating device with the nozzle. Background technique [0002] At present, the nozzles of existing gas-fired burners usually have independent gas delivery channels and combustion-supporting gas delivery channels. After the gas and combustion-supporting gas are mixed in the nozzle, they are ignited at the nozzle. Generally speaking, due to the high pressure of the combustion-supporting gas, when there are some slight airflow disturbances in the air, it will not affect the combustion flame. However, for larger airflow disturbances, especially the injection of convective gas, it will It is dangerous to extinguish the burning flame or even cause the flame to suck back. [0003] In the combustion furnace used for metal heat treatment, the nozzles of the burner are usually distr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02F23D14/64F23C5/00F23C7/02F23L15/00
CPCY02E20/34
Inventor 布兰·凯德柯戴维张麒麟代迈克斯帕姆韦彼得吴志勇
Owner ECLIPSE COMBUSTION EQUIP SUZHOU CO LTD
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