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Controllable eddy burner

A burner and combustion chamber technology, applied in the direction of burner, combustion method, combustion type, etc., can solve the problems that the combustion temperature cannot be well controlled, stable combustion cannot be achieved, and tempering can be avoided, so as to avoid the phenomenon of tempering or defiring , good fuel adaptability and wide fuel adaptability

Inactive Publication Date: 2009-12-30
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
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Problems solved by technology

[0005] The object of the present invention is to provide a controllable vortex combustor, through structural changes, a recirculation vortex zone with controllable size and position is formed in the combustion chamber, which solves the problem that the combustion temperature cannot be adjusted when the fuel composition and composition change. It is well controlled and cannot achieve stable combustion, resulting in problems of misfiring and tempering

Method used

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  • Controllable eddy burner
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  • Controllable eddy burner

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] According to the basic principles of fluid mechanics, the flow of non-streamlined objects in the jet is called blunt body flow. figure 1 Shown is a schematic of the wake flow of a bluff body. When the jet bypasses the bluff body, a deceleration and diffusion flow area is formed in the flow field downstream of the bluff body, and in the wake area of ​​the bluff body, due to the retardation of the bluff body, the fluid separates from the boundary layer and forms a low-pressure area. Under the action of the pressure gradient, a recirculation vortex region is formed in the wake region of the blunt body, and there is a strong exchange of momentum, heat and mass between the recirculation region and the mainstream region. After the main jet bypasses the recirculation zone, it converges at point c, and the maximum velocity on the jet section ...

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Abstract

A controllable vortex burner comprises a combustion chamber, an air-distributing pipeline, a spiral-flow air-distributing pipeline and a smooth burning body set in the air-distributing pipeline. The smooth burning body includes a bush disposed in the air-distributing pipeline and fixed with it together. A draw-bar is passing through the bush and at one end of the draw-bar opposite the combustion chamber are fixed four same structural finned sheets. Each finned sheet is supported by a spring and the spring is connected with the draw-bar. The other end of the draw-bar is connected with the bush thread.

Description

technical field [0001] The invention belongs to the technical field of thermal energy engineering, and relates to a burner, in particular to a burner capable of controlling a backflow vortex. Background technique [0002] Combustion is a reaction process controlled by physical and chemical effects. The main combustible components of gaseous fuels are generally methane, hydrogen, carbon monoxide and various alkanes with high carbon content. These substances generally do not cause environmental pollution after combustion, but when the temperature is too high, the amount of thermal NOx produced It will increase rapidly, causing serious air pollution. In addition, the high temperature will also make the combustion device unbearable. [0003] For different fuels, the speed of flame propagation is different. When the amount of fuel is constant, the speed of the airflow changes very little. It is difficult to match the speed of airflow and flame propagation speed. It is difficult ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D1/00
Inventor 惠世恩徐通模周屈兰赵钦新谭厚章
Owner XI AN JIAOTONG UNIV
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