Annular back-flow vertical wind tunnel, and its back-flow method

Abstract

The invention relates to a circuit plumping wind tunnel and the backflow method. The wind tunnel includes power includes power system and working tunnel identity. The working tunnel identity includes air intake end, stable section, contracted section, working section and air discharge end. The feature is that the wind tunnel contains a crust covering outside the working tunnel identity. A circle channel is set between the working tunnel identity and the crust. The air would blow from the air intake of the working tunnel identity and blow out form the air outlet of the working tunnel identity. The invention has low power request, easy to design and construct, low noise and could be used all weather. It is economy, safe, and confortabel.

Description

technical field [0001] The invention relates to a vertical wind tunnel used for skydiving training and trapeze movement, in particular to an annular backflow vertical wind tunnel and a backflow method thereof. Background technique [0002] A special ground experimental equipment in the field of aviation—the vertical wind tunnel, has built many developed countries led by the United States as early as the last century. In recent years, in order to train skydivers and skydivers in the body control and artistic performance training during the falling phase, as well as the rise of a fashionable sports and leisure sport - trapeze sports, the aviation vertical wind tunnel has evolved and developed into a new civilian purpose. Master's Trapeze Sports Vertical Wind Tunnel. The high-speed airflow in the vertical wind tunnel flight cabin can provide high-efficiency and high-quality training for skydivers and parachutists, and also enable flight enthusiasts to enjoy the joy of flying i...

AI Technical Summary

Problems solved by technology

[0003] However, the existing vertical wind tunnels have the following disadvantages: open-circuit type (ie chimney type) is mostly used, although the structure is simple, but the height is high, the noise is high, and it is greatly affected by the external weather, which restricts its use; The design and construction of the return pipeline in the type return wind tunnel are very complicated; and the air inside the wind tunnel is rarely exchanged with the outside atmosphere, which is not easy to dissipate heat. After the wind tunnel has been working for a period of time, the temperature of the internal return air is too high, and it is not fresh, which is easy to use. People feel unwell and should not work long hours

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