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Vortex ring exciter based on negative pressure cutoff

A technology of exciter and negative pressure, applied in the direction of mechanical equipment, fluid flow, etc., can solve the problem of blocking the rear flow channel, etc., and achieve the effect of reducing the energy loss of the fluid

Active Publication Date: 2020-09-11
WUHAN UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] The existing vortex ring generation device, after the airflow is accelerated by the fan, often sets up a mechanical device inside the pipeline to cut off the airflow to realize the pulse vortex ring. However, since the fan is always in a rotating state, excess gas will be generated every time it is cut off, causing blockage. Rear runner

Method used

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  • Vortex ring exciter based on negative pressure cutoff
  • Vortex ring exciter based on negative pressure cutoff
  • Vortex ring exciter based on negative pressure cutoff

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] refer to Figure 1 to Figure 6 As shown, the vortex ring exciter based on negative pressure cut-off in an embodiment provided by the present invention includes an air supply device, a negative pressure cut-off device, a reduction device and a ventilation duct 5; The two ends of the pipeline 5; the two sides of the ventilation pipeline 5 are symmetrically provided with openings; the negative pressure cut-off device is arranged at the opening of the ventilation pipeline 5; , the air flow in the ventilation duct 5 is cut off, and the cut off air flow is curled under the action of the reduction device to generate a vortex ring.

[0025] Further, the negative pressure cut-off device includes a negative pressure tube 6, a negative pressure push rod 3 and a push plate power unit; the air inlet of the negative pressure tube 6 is connected to the side ...

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Abstract

The invention discloses a vortex ring exciter based on negative pressure cutoff. The vortex ring exciter comprises an air supply device, a negative pressure cutoff device, a shrinkage reducing deviceand a ventilation pipeline; a main body of the ventilation pipeline is cylindrical; the air supply device and the shrinkage reducing device are arranged at the two ends of the ventilation pipeline; one side of the pipe wall of the ventilation pipeline is provided with an opening or the two sides are symmetrically provided with openings; the negative pressure cutoff device is arranged at the opening of the ventilation pipeline; and the negative pressure cutoff device generates negative pressure at the opening of the ventilation pipeline to cut off airflow in the ventilation pipeline, and the cutoff airflow is curled under the action of the shrinkage reducing device to generate a vortex ring. According to the vortex ring exciter based on negative pressure cutoff, the cutoff function is achieved by replacing mechanical parts with negative pressure, gas at the moment of cutoff is guided out through the negative pressure while cutoff is conducted, redundant blocked gas cannot be generated,and fluid energy loss is reduced.

Description

technical field [0001] The invention relates to the technical field of fluid mechanics, in particular to a vortex ring exciter based on negative pressure cut-off. Background technique [0002] The existing vortex ring generation device, after the airflow is accelerated by the fan, often sets up a mechanical device inside the pipeline to cut off the airflow to realize the pulse vortex ring. However, since the fan is always in a rotating state, excess gas will be generated every time it is cut off, causing blockage. rear runner. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a vortex ring exciter based on negative pressure cut-off, which can lead out the gas at the moment of cut-off while cutting off, without causing unnecessary blockage. gas, reducing fluid energy loss. [0004] The technical scheme that the present invention adopts for solving the problems of the technologies described above is: [0005] A vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15D1/00
CPCF15D1/009
Inventor 徐琳侯宝珅戴训田昊宇程晓渊弋戈马辰阳吴杭
Owner WUHAN UNIV OF TECH
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