阅读说明：本技术 一种弹性传感式涡环激励器 (Elastic sensing type vortex ring exciter ) 是由 徐琳 田昊宇 赵乐龙 弋戈 侯宝珅 郑心怡 程晓渊 于 2020-07-20 设计创作，主要内容包括：本发明公开了一种弹性传感式涡环激励器,包括通风管道、减缩喷口、轴流风机、弹性截断机构、传感机构和锁紧机构,轴流风机和弹性截断机构沿气流流动方向依次布置于通风管道内,减缩喷口设置于通风管道的出口。本发明实现脉冲涡环,降低能量损耗。(The invention discloses an elastic sensing type vortex ring exciter which comprises a ventilating duct, a reducing nozzle, an axial flow fan, an elastic cut-off mechanism, a sensing mechanism and a locking mechanism, wherein the axial flow fan and the elastic cut-off mechanism are sequentially arranged in the ventilating duct along the flowing direction of air flow, and the reducing nozzle is arranged at the outlet of the ventilating duct. The invention realizes the pulse vortex ring and reduces the energy loss.)

1. The utility model provides an elasticity sensing formula vortex ring exciter which characterized in that, includes air pipe, reduces spout, axial fan, elasticity cutting mechanism, sensing mechanism and locking mechanism, and axial fan and elasticity cutting mechanism arrange in air pipe along the air current flow direction in proper order, and the spout that reduces sets up in air pipe's export.

2. The resilient sensing vortex ring exciter of claim 1, wherein the resilient cut-off mechanism comprises a resilient air bag, a sensing control mechanism and a resilient contraction gate, the axial flow fan is disposed at an air inlet of the resilient air bag, the resilient contraction gate is disposed at an air outlet of the resilient air bag, and the sensing control mechanism is connected to the resilient contraction gate and the resilient air bag respectively.

3. The elastic sensing vortex ring actuator of claim 2, wherein the elastic contraction gate comprises an elastic contraction ring, a winch, a pulling rope and a motor, the elastic contraction ring is disposed at the air outlet of the elastic airbag, one end of the pulling rope is connected with the elastic contraction ring, the other end of the pulling rope is wound on the winch, the winch is connected with the output shaft of the motor, and the motor is connected with the sensing control mechanism.

4. The elastically sensing vortex ring actuator of claim 3, wherein the motor is a stepper motor.

5. The elastic sensing vortex ring actuator of claim 3, wherein the number of the motors is two, two motors are respectively disposed at two sides of the elastic air bag, each motor is connected with a capstan, and the two capstans are respectively connected with two ends of the elastic contraction ring through pull ropes.

6. The elastic sensing type vortex ring exciter according to claim 2, wherein the sensing control mechanism comprises a push rod, a contact sensor and a connection circuit, one end of the push rod is connected with the outer wall of the middle part of the elastic air bag, the contact sensor is arranged on one side of the other end of the push rod, a return spring is connected between the push rod and the ventilation pipeline, the return spring enables the push rod to be extruded towards the center of the elastic air bag through spring force, and the contact sensor is connected with the elastic contraction gate through the connection circuit.

7. The elastic sensing vortex ring exciter of claim 6, wherein one end of the push rod is in contact connection with the elastic airbag, and the other end of the push rod passes through a push rod positioning hole on the wall of the ventilation duct and is suspended on one side of the contact sensor.

8. The elastically sensing vortex ring actuator of claim 6, wherein the number of push rods is two, and the push rods are symmetrically arranged on both sides of the elastic air bag, and one side of each push rod is provided with a contact sensor.

9. The elastically sensitive vortex ring actuator of claim 2, wherein the elastomeric bladder is an ellipsoidal elastomeric material.

10. The elastic sensing type vortex ring exciter according to claim 2, wherein the ventilation duct comprises two cylindrical shells with different diameters, the two cylindrical shells are sequentially connected and arranged along the same axis, the outlet of the large-diameter cylindrical shell is connected with the inlet of the small-diameter cylindrical shell, the elastic air bag is arranged in the large-diameter cylindrical shell, and the reducing nozzle is arranged at the outlet of the small-diameter cylindrical shell.

Technical Field

The invention relates to the technical field of fluid mechanics, in particular to an elastic sensing type vortex ring exciter.

Background

The existing vortex ring generating device accelerates airflow through a fan, usually cuts off the airflow through a mechanical device arranged inside a pipeline, so that a pulse vortex ring is realized, but because the fan is always in a rotating state, redundant gas can be generated by cutting off at every time, and a rear flow channel is blocked.

Disclosure of Invention

The invention aims to solve the technical problem of providing an elastic sensing type vortex ring exciter aiming at the defects in the prior art, so that a pulse vortex ring is realized, and the energy loss is reduced.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides an elasticity sensing formula vortex ring exciter, includes air pipe, reduces spout, axial fan, elasticity cutting mechanism, sensing mechanism and locking mechanism that contracts, and axial fan and elasticity cutting mechanism arrange in air pipe along the air current flow direction in proper order, and the spout that reduces sets up in air pipe's export.

According to the technical scheme, the elastic cut-off mechanism comprises an elastic air bag, a sensing control mechanism and an elastic shrinkage gate, the axial flow fan is arranged at an air inlet of the elastic air bag, the elastic shrinkage gate is arranged at an air outlet of the elastic air bag, and the sensing control mechanism is respectively connected with the elastic shrinkage gate and the elastic air bag.

According to the technical scheme, the elastic contraction gate comprises an elastic contraction ring, a winch, a pulling rope and a motor, the elastic contraction ring is arranged at an air outlet of the elastic air bag, one end of the pulling rope is connected with the elastic contraction ring, the other end of the pulling rope is wound on the winch, the winch is connected with an output shaft of the motor, and the motor is connected with the sensing control mechanism.

According to the technical scheme, the motor is a stepping motor.

According to the technical scheme, the number of the motors is two, the two motors are respectively arranged at two sides of the elastic air bag, each motor is connected with a winch, and the two winches are respectively connected with two ends of the elastic contraction ring through the pull ropes.

According to the technical scheme, the sensing control mechanism comprises a push rod, a contact sensor and a switch-on circuit, one end of the push rod is connected with the outer wall of the middle of the elastic air bag, the contact sensor is arranged on one side of the other end of the push rod, a return spring is connected between the push rod and the ventilation pipeline, the return spring enables the push rod to extrude towards the center of the elastic air bag through spring force, and the contact sensor is connected with the elastic shrinkage gate through the switch-on circuit.

According to the technical scheme, one end of the push rod is in contact connection with the elastic air bag, and the other end of the push rod penetrates through the push rod positioning hole in the pipe wall of the ventilation pipeline and is suspended on one side of the contact sensor.

According to the technical scheme, the number of the push rods is two, the push rods are symmetrically arranged on two sides of the elastic air bag, and one side of each push rod is provided with the contact sensor.

According to the technical scheme, the elastic air bag is made of an ellipsoidal elastic material.

According to the technical scheme, the ventilation pipeline comprises two cylindrical shells with different diameters, the two cylindrical shells are sequentially connected and arranged along the same axis, the outlet of the large-diameter cylindrical shell is connected with the inlet of the small-diameter cylindrical shell, the elastic air bag is arranged in the large-diameter cylindrical shell, and the reducing nozzle is arranged at the outlet of the small-diameter cylindrical shell.

The invention has the following beneficial effects:

1. the invention realizes the pulse vortex ring and reduces the energy loss after accelerating the airflow through the fan.

2. The pulse of the air flow is realized through the relaxation and the contraction of the elastic air bag, no redundant blocking air is generated, and the energy loss of the fluid is reduced.

Drawings

FIG. 1 is a front view of an elastically sensitive vortex ring actuator in an embodiment of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of an elastic cut-off mechanism in an embodiment of the present invention;

FIG. 5 is a view from the direction B of FIG. 4;

in the figure, 1-a ventilation duct, 2-a push rod, 3-a contact sensor, 4-a stepping motor, 5-a winch, 6-a small-diameter cylindrical shell, 7-a reducing nozzle, 8-a contact sensor bracket, 9-a return spring, 10-an axial flow fan, 11-an elastic air bag, 12-a pull rope, 13-an elastic contraction ring and 14-a large-diameter cylindrical shell.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1 to 5, the elastic sensing type vortex ring exciter in one embodiment of the present invention includes a ventilation duct 1, a reduction nozzle 7, an axial flow fan 10, an elastic cut-off mechanism, a sensing mechanism, and a locking mechanism, where the axial flow fan 10 and the elastic cut-off mechanism are sequentially disposed in the ventilation duct 1 along an airflow flowing direction, and the reduction nozzle 7 is disposed at an outlet of the ventilation duct 1.

Further, the elastic cut-off mechanism comprises an elastic air bag 11, a sensing control mechanism and an elastic shrinkage gate, the axial flow fan 10 is arranged at an air inlet of the elastic air bag 11, the elastic shrinkage gate is arranged at an air outlet of the elastic air bag 11, and the sensing control mechanism is respectively connected with the elastic shrinkage gate and the elastic air bag 11.

Further, the elastic contraction gate comprises an elastic contraction ring 13, a winch 5, a pulling rope 12 and a motor, wherein the elastic contraction ring 13 is arranged at an air outlet of the elastic air bag 11, one end of the pulling rope 12 is connected with the elastic contraction ring 13, the other end of the pulling rope 12 is wound on the winch 5, the winch 5 is connected with an output shaft of the motor, and the motor is connected with the sensing control mechanism.

Further, the motor is a stepping motor 4.

Further, the contact sensor 3 is fixed to the outer wall of the ventilation duct by a contact sensor holder 8.

Further, the motor drives the winch 5 to rotate back and forth, so that the pull rope 12 is contracted and expanded, and the elastic contraction ring 13 is opened and closed.

Further, the number of the motors is two, the two motors are respectively arranged on two sides of the elastic air bag 11, each motor is connected with a winch 5, and the two winches 5 are respectively connected with two ends of the elastic contraction ring 13 through the pull rope 12.

Further, the sensing control mechanism comprises a push rod 2, a contact sensor 3 and a switch-on circuit, one end of the push rod 2 is in contact connection with the outer wall of the middle of the elastic air bag 11, the contact sensor 3 is arranged on one side of the other end of the push rod 2, a return spring 9 is connected between the push rod 2 and the ventilation pipeline 1, the return spring 9 enables the push rod 2 to extrude towards the center of the elastic air bag 11 through spring force, and the contact sensor 3 is connected with the elastic contraction gate through the switch-on circuit; after the elastic shrinkage gate is closed, the axial flow fan 10 blows air flow into the elastic air bag 11, the elastic air bag 11 expands to push the push rod 2 to overcome the spring force to be in contact with the contact sensor 3, a switch-on circuit is conducted, the elastic shrinkage gate is opened, the elastic air bag 11 discharges the air flow, the push rod 2 returns to the initial position under the action of the spring force, the push rod extrudes the elastic air bag 11 to the center, gas is further extruded, after the push rod 2 is separated from the contact sensor 3, the elastic shrinkage gate is closed, the steps are repeated in a circulating mode, and the elastic air bag 11 alternately stores the gas and discharges the.

Furthermore, one end of the push rod 2 is in contact connection with the elastic air bag 11, and the other end of the push rod 2 passes through a push rod 2 positioning hole on the tube wall of the ventilation duct 1 and is suspended on one side of the contact sensor 3.

Furthermore, the number of the push rods 2 is two, the push rods are symmetrically arranged on two sides of the elastic air bag 11, and one side of each push rod 2 is provided with a contact sensor 3; the two push rods 2 form a clamp for the elastic air bag 11.

Further, the elastic balloon 11 is an ellipsoidal elastic material.

Further, ventilation duct 1 includes the cylindrical shell of two different diameters, and two cylindrical shells connect gradually along same axis and arrange, and the export of major diameter cylindrical shell 14 and the access connection of minor diameter cylindrical shell 6, elastic airbag 11 set up in major diameter cylindrical shell 14, and the nozzle 7 that reduces sets up in the export of minor diameter cylindrical shell 6.

Further, the outer diameter of the air outlet of the ventilation pipeline 1 is equal to the inner diameter of the reduction nozzle 7, and the ventilation pipeline and the reduction nozzle are connected through nesting.

The working principle of the invention is as follows: referring to fig. 1, the elastic sensing type vortex ring exciter provided by the invention, an initial axial flow fan 10 starts to work, external air is continuously pumped into an elastic air bag 11, at the moment, a return spring 9 is not compressed, a contact sensor 3 is not electrified, a stepping motor 4 does not work, one end of the elastic air bag 11 is in a sealed and fastened state under the action of an elastic shrinkage ring 13, the elastic air bag 11 continuously expands under the action of the fan 10 until the air bag 11 compresses a push rod 2, and further compresses the return spring 9, when the push rod 2 contacts the contact sensor 3, the sensor 3 is electrified, the stepping motor 4 starts to work to enable a winch 5 to rotate, the elastic shrinkage ring 13 is pulled open under the action of pull ropes 12 at two sides, the air bag is deflated, air flows out through a small diameter 6 of a ventilation pipe, and is curled to generate a vortex ring under the shearing action of a shrinkage reduction nozzle 7, when the air is deflated to a certain, gasbag 11 no longer bloated, weakens the effort of push rod 2, and under return spring 9 effects, push rod 2 replies initial condition, and contact sensor 3 cuts off the power supply, and then step motor 4 cuts off the power supply, and the elasticity 13 elasticity effect of elastic contraction ring is down sealed by the tight seal of elasticity gasbag 11 exit end again, realizes the fracture of air current, and then realizes pulse vortex ring.

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.