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Micro-combustor based on liquid fuel

A micro-combustion, liquid fuel technology, applied in burners, combustion methods, combustion types, etc., can solve the problems of single fuel type, weak functionality, and high production costs, and achieve high ignition success rate, reduced geometric size, and improved use. effect of life

Active Publication Date: 2019-02-05
BEIJING POWER MACHINERY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) The structure is complex, and a metal mesh needs to be installed inside the burner;
[0007] 2) The system has low efficiency and weak functionality, and requires continuous power input to atomize liquid fuel;
[0008] 3) The type of fuel is single, and some fuels that are difficult to charge cannot be burned;
[0009] 4) The system is complex and the production cost is high

Method used

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  • Micro-combustor based on liquid fuel
  • Micro-combustor based on liquid fuel
  • Micro-combustor based on liquid fuel

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Embodiment Construction

[0028] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Such as figure 2 As shown, the present invention provides a micro burner based on liquid fuel, which includes an upper shell 1 and a lower shell.

[0030] The profile of the upper shell 1 is one of semi-ellipse, semi-circle, semi-ellipse and rectangular combined structure, semi-circular and rectangular combined structure; the lower shell is composed of upper end wall 2, outer shell 3, The lower end wall 5 and the inner wall 6 are connected by welding and form a ring cavity as a gas collection chamber. There are 4-8 oblique holes on the inner wall 6 with an inclination angle of 30°-60° to the normal direction of the wall as air intake. The holes are uniformly arranged in the circumferential direction;

[0031]...

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Abstract

The invention relates to a micro-combustor based on a liquid fuel, and relates to the technical field of engines. According to the micro-combustor based on the liquid fuel provided by the invention, firstly, the species of fuel oil have no any limitation, so that various liquid-state fuels and even gas-state fuels can be adopted; secondly, the fuel oil is preheated so as to be ensured to be high-efficiently evaporated and combusted; thirdly, the ignition delay is shortened, the success rate of ignition is improved, and the fuel oil and fuel gas residence time can be prolonged with a smaller size, so that the geometric dimension required for an ignitor is reduced; and fourthly, the heat load formed in the inner wall during the combustion process can be effectively absorbed, so that the surface temperature is reduced, and the service life of the combustor is prolonged.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a micro burner based on liquid fuel. Background technique [0002] Liquid fuel-based micro-combustors refer to micro-combustion devices in which the burner uses liquid fuel as fuel and air as the oxidant, and the air flow unit of the burner is on the order of "grams per second" (generally less than 5g / s). This combustion device has great application potential in micro-electromechanical systems. The heat loss rate of the micro burner is proportional to the surface area / volume (S / V) and the temperature of the outer wall. The S / V of the micro burner is 2 to 3 orders of magnitude larger than that of the conventional scale, and the increase of heat loss leads to the flame instability. , flameout, thermal efficiency reduction, etc. Compared with gaseous fuels, liquid fuels have the advantages of high energy density, easy transportation and storage. The current micro-burners are main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D11/10F23D11/44
CPCF23D11/103F23D11/443
Inventor 蔡文哲李峰余海生郭昆
Owner BEIJING POWER MACHINERY INST
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