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Petal-shaped wall surface evaporating pipe for micro combustion chamber

A technology of micro-combustion chambers and evaporation tubes, applied in the direction of combustion chambers, continuous combustion chambers, combustion methods, etc., can solve problems such as the difficulty of reducing the volume of micro-combustion chambers, and achieve reduced combustion chamber length, thorough atomization, and heat exchange The effect of the enhanced effect

Inactive Publication Date: 2016-05-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its effective heat exchange surface is only the wall surface of the cylinder. Therefore, in order to ensure the fuel atomization, it is necessary to ensure that the evaporation tube has a certain length, which will make it more difficult to reduce the volume of the micro combustion chamber.

Method used

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  • Petal-shaped wall surface evaporating pipe for micro combustion chamber
  • Petal-shaped wall surface evaporating pipe for micro combustion chamber
  • Petal-shaped wall surface evaporating pipe for micro combustion chamber

Examples

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Embodiment Construction

[0022] The present invention will be further described now in conjunction with accompanying drawing:

[0023] combine figure 1 , figure 2 , the present invention provides an evaporation tube design structure that can effectively improve fuel atomization efficiency in a micro combustion chamber. figure 1 is a side view of the wall of the evaporation tube, figure 2 It is a cross-sectional view of the evaporation tube seen from the direction of the nozzle, and the petal shape of the nozzle can be clearly seen. image 3 It is a cross-sectional view of the pipe wall. It can be seen that both the inner and outer walls are petal-shaped, and the rounded corners are excessively rounded. Figure 4 A perspective view of an evaporating tube.

[0024] In the micro-combustion chamber, due to the small size, the combustion will face a series of problems, such as high local temperature, insufficient combustion, carbon deposits, etc. The main problem is that the residence time of the fue...

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PUM

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Abstract

The invention provides a petal-shaped wall surface evaporating pipe for a micro combustion chamber. According to the pipe, the atomization quality of fuel in the micro combustion chamber can be improved, and distribution of temperature in the combustion chamber can be effectively improved. By changing the shape of the wall surface of the evaporating pipe, the contact area between the pipe wall and high-temperature gas in the combustion chamber is enlarged, the heat exchange effect is improved, and the atomization effect of the fuel in the evaporating pipe is improved. By reasonably designing the arc-shaped transitional curved surface, the heat stress exerted on the evaporating pipe in high temperature can be effectively reduced. The evaporating pipe has the advantages that simple improvements are carried out on the design basis of traditional evaporating pipe structures, the problem that atomization in the micro combustion chamber is insufficient is solved, and the shortcoming that distribution of the heat stress is not uniform is overcome.

Description

technical field [0001] The invention belongs to the field of micro-combustion chambers, and in particular relates to an evaporation tube structure for enhancing heat exchange in an evaporation tube, accelerating fuel evaporation and avoiding uneven fuel distribution. Background technique [0002] Unmanned aerial vehicle (UAV) is one of the emphases of research in modern countries, and it has important application in military affairs and civil affairs. It has the characteristics of small size, strong maneuverability and good concealment. Since it does not require people to operate on the aircraft, it can work in relatively harsh environments. The UAV is mainly equipped with a micro-combustion chamber. Compared with the normal combustion chamber, the micro-combustion chamber faces a series of problems such as low combustion efficiency, uneven fuel distribution, and uneven outlet temperature distribution, which limits the mobility of the UAV. and working environment. [0003]...

Claims

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Application Information

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IPC IPC(8): F23R3/32
CPCF23R3/32
Inventor 张群李逸飞杨省喆黎超超
Owner NORTHWESTERN POLYTECHNICAL UNIV
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