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Air injection device

A technology of air and ejection tubes, which is applied in the direction of jet pumps, machines/engines, non-volume pumps, etc. It can solve the problems of affecting the ejection effect, affecting the mixing of airflow, and the inability to mix airflow well, so as to improve the ejection effect of effect

Active Publication Date: 2019-12-03
GUIZHOU YONGHONG AVIATION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of installation space, the length of the air outlet section of the ejector on the aircraft is relatively short, resulting in poor mixing of the airflow; The walls of the flow channel are easily affected by the Bernoulli effect, which further affects the mixing of the airflow and ultimately affects the ejection effect

Method used

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment, but should not be interpreted as that the scope of the subject matter of the present invention is only limited to following embodiment, under the situation of not departing from above-mentioned technical thought of the present invention, all according to this field Various modifications, substitutions and alterations made by ordinary technical knowledge and common means are included in the scope of the present invention.

[0027] In this embodiment, the air ejection device includes a gradually narrowing air inlet 1, an ejector pipe 2 surrounding the air inlet 1, nozzle pipes 3 that are staggered around the circumference and communicated with the ejector pipe 2, and a straight air outlet 4 . All components of the ejection device are connected together by welding; image 3 , Figure 4 , Pic 4-1 with Figure 4-2 The ejector pipe 2 and the nozzle pipe...

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Abstract

The invention discloses an air injection device, which comprises an air inlet (1), an injection pipe (2), spray pipes (3) and an air outlet (4). The air inlet (1) is a channel the cross section of which is gradually narrowed in the air inflow direction. The injection pipe (2) is connected with the air inlet (1) in a surrounding mode along the outer contour of the air inlet (1). The airflow outletends of the spray pipes (3) are circumferentially staggered along the inner contour of the air inlet (1), and the airflow inlet ends of the spray pipes (3) are communicated with the injection pipe (2). The air outlet (4) is connected with the tail end of the air inlet (1), and the air outlet (4) is a straight pipeline with the uniform section. The air injection device is used for ejecting air through high-temperature and high-pressure gas, and the ejected air can serve as a cold source to be supplied to equipment for heat dissipation. The layout of the spray pipes and the flow channel is morereasonable, and the injection effect can be effectively improved.

Description

technical field [0001] The invention relates to a structural design of an air injection device, which belongs to the field of injector structural design. Background technique [0002] When the aircraft is on the ground, it is often necessary to use an ejector when the ambient air needs to be sucked in as a cooling source to dissipate heat for the equipment. Due to the limited installation space, the length of the air outlet section of the ejector on the aircraft is relatively short, resulting in poor mixing of the airflow; The walls of the flow channel are easily affected by the Bernoulli effect, which further affects the mixing of the airflow and finally affects the ejection effect. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the ejection device in the prior art, and provide a structural design scheme of the air ejection device with better ejection effect. [0004] In order to achieve the above object, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04F5/16F04F5/46
CPCF04F5/16F04F5/466
Inventor 蒋超王田
Owner GUIZHOU YONGHONG AVIATION MACHINERY