CN112901607A - Vortex ring generating device for alternately supplying air - Google Patents
Vortex ring generating device for alternately supplying air Download PDFInfo
- Publication number
- CN112901607A CN112901607A CN202110054315.4A CN202110054315A CN112901607A CN 112901607 A CN112901607 A CN 112901607A CN 202110054315 A CN202110054315 A CN 202110054315A CN 112901607 A CN112901607 A CN 112901607A
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- China
- Prior art keywords
- air supply
- cut
- supply duct
- pipeline
- vortex ring
- Prior art date
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Links
- 230000003111 delayed effect Effects 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/009—Influencing flow of fluids by means of vortex rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0065—Influencing flow of fluids by influencing the boundary layer using active means, e.g. supplying external energy or injecting fluid
- F15D1/008—Influencing flow of fluids by influencing the boundary layer using active means, e.g. supplying external energy or injecting fluid comprising fluid injection or suction means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a vortex ring generating device for alternative air supply, which comprises an air supply device, an alternative cut-off device and a driving device, wherein the air supply device comprises an air supply pipeline, a fan and a gradually-reduced nozzle; the fan pumps airflow into the first air supply pipeline, and the alternative blocking device blocks the first air supply channel and simultaneously opens the internal channel of the alternative blocking device or opens the first air supply channel and simultaneously closes the internal channel of the alternative blocking device under the action of the driving device. The invention realizes continuous air supply, greatly improves the ventilation quantity and can meet the requirement of the lowest ventilation quantity in the heating or refrigerating field.
Description
Technical Field
The invention relates to the technical field of hydromechanics, in particular to a vortex ring generating device for alternately supplying air.
Background
The current formula of cutting vortex ring produces the device, in the twinkling of an eye that produces the formula of cutting vortex ring, the runner is because cutting plate cuts off the air current, and then leads to the short time in the runner to block up, and the fan is still being pumped this moment, then can lead to the air current to be backward extruded from the position of fan, and the fluid energy loss is too big in the device. And the ventilation volume is greatly limited, and the generated vortex ring ventilation volume cannot meet the requirement in the heating or cooling field with the lowest ventilation volume standard.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a vortex ring generating device for alternately supplying air, aiming at the defects in the prior art, so that continuous and uninterrupted air supply is realized, the ventilation quantity is greatly improved, and the requirement of the lowest ventilation quantity in the heating or refrigerating field can be met.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a vortex ring generating device for alternative air supply comprises an air supply device, an alternative cut-off device and a driving device, wherein the air supply device comprises a first air supply pipeline, a fan and a first gradually-reducing nozzle; the fan pumps airflow into the first air supply pipeline, and the alternative blocking device blocks the first air supply channel and simultaneously opens the internal channel of the alternative blocking device or opens the first air supply channel and simultaneously closes the internal channel of the alternative blocking device under the action of the driving device.
According to the technical scheme, the alternate cutting device and the driving device are sequentially arranged along the axis of the first air supply pipeline.
According to the technical scheme, the alternative cut-off device comprises a second gradually-reducing nozzle, a second air supply pipeline, a delayed cut-off pipeline and a support, the second air supply pipeline is sleeved in the first air supply pipeline, the delayed cut-off pipeline is fixedly sleeved outside the second air supply pipeline and arranged in the first gradually-reducing nozzle, the second gradually-reducing nozzle is fixedly arranged at the outlet end of the second air supply pipeline, the driving device is fixedly arranged on the first air supply pipeline and connected with a fixing plate, the fixing plate is arranged at the inlet end of the second air supply pipeline, the output end of the driving device is connected with the second air supply pipeline through the support, and the driving device drives the second air supply pipeline and the delayed cut-off pipeline to move up and down along the axis of the first air;
when No. two blast ducts and time delay cut the pipeline and be in initial position, the fixed plate makes No. two blast ducts's entrance point seal, time delay cuts the pipeline and is located the exit end top of a convergent spout, contactless with a convergent spout, cut the pipeline and move down to cutting the position when No. two blast ducts and time delay, the fixed plate breaks away from with No. two blast ducts ' entrance point, make No. two blast ducts ' entrance point open, the outer lane that cuts the pipeline of time delay cup joints with a convergent spout, make No. two convergent spouts cut and seal.
According to the technical scheme, the driving device comprises the motor and the lead screw, the motor is fixedly arranged on the fixed plate, the output end of the motor is connected with one end of the lead screw, the other end of the lead screw penetrates through the fixed plate to be connected with the support through threads, the support is arranged in the second air supply pipeline and connected with the inner wall of the second air supply pipeline, and the motor drives the lead screw to rotate to drive the support and the second air supply pipeline to move up and down.
According to the technical scheme, the support is a cross-shaped support, the screw rod is connected with the center of the cross-shaped support through threads, and the outer end of the cross-shaped support is connected with the inner wall of the second air supply pipeline.
According to the technical scheme, the driving device further comprises a fixed cavity, the fixed cavity is fixedly arranged on the fixed plate, the motor is arranged in the fixed cavity, and the fixed cavity is fixedly connected with the inner wall of the first air supply pipeline through the supporting rod.
According to the technical scheme, the fixed cavity is a conical fixed cavity, and the conical head of the conical fixed cavity faces towards the inlet end of the first air supply channel.
According to the technical scheme, the delay cut-off pipeline is fixedly sleeved with the second air supply pipeline through threads.
According to the technical scheme, the motor is a stepping motor.
According to the technical scheme, the fan is an axial flow fan.
The invention has the following beneficial effects:
according to the invention, through the movement of the alternative cut-off device, the airflow in the device is always in a circulation state, the defects that the airflow is forced to reversely flow out of the fan and flow out due to the fact that the flow channel is closed and the airflow is blocked at the moment that the vortex ring is generated by cut-off gas in the existing cut-off device are solved, and the energy loss of the gas is reduced; the system has the characteristics of high efficiency and high ventilation rate, can meet the requirements of the heating or refrigerating field with the lowest ventilation rate standard, can spread the hot air flow or the cold air flow farther under the conditions of the same ventilation rate and lower air speed, improves the use experience of users, and has wide market application prospect.
Drawings
FIG. 1 is an exploded view of an alternative blowing vortex ring generator according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a delayed cutoff pipeline in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a first tapered nozzle in an embodiment of the present invention;
FIG. 4 is an elevation view of a vortex ring generating device for alternately blowing air in an embodiment of the present invention;
FIG. 5 is a front view of a vortex ring generating device for alternately blowing air according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view C-C of FIG. 5;
FIG. 7 is a schematic structural diagram of a second air supply duct in the embodiment of the present invention;
FIG. 8 is a schematic structural view of an axial flow fan in an embodiment of the present invention;
FIG. 9 is a schematic diagram of a tapered holding chamber in an embodiment of the invention;
FIG. 10 is a schematic view of a stepping motor according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a motor fixing plate according to an embodiment of the present invention;
FIG. 12 is a schematic view of a cross-shaped support in an embodiment of the invention;
in the figure, 1-a top cover of a blast pipeline, 2-an axial flow fan, 3-a blast pipeline, 4-a conical fixed cavity, 5-a motor fixed plate, 6-a stepping motor, 7-a screw rod, 8-a cross-shaped bracket, 9-a second blast pipeline, 10-a delay cut pipeline, 11-a second reducing nozzle and 12-a first reducing nozzle.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 12, an alternative air supply vortex ring generating device in an embodiment of the present invention includes an air supply device, an alternative cut-off device, and a driving device, where the air supply device includes a first air supply duct 3, a fan, and a first gradually-reducing nozzle 12, the fan is disposed at an inlet end of the first air supply duct, the first gradually-reducing nozzle 12 is disposed at an outlet end of the first air supply duct 3, and the alternative cut-off device is disposed in the first air supply duct 3 and connected to the driving device; air supply duct 3 is gone into with the air current pump to the fan at air supply arrangement top, under the drive arrangement effect, cut the device in turn and cut a air supply passageway and open in turn and cut device inside passage simultaneously, close big vortex ring air outlet and open little vortex ring air outlet simultaneously, or open an air supply passageway and close the inside passage who cuts the device in turn simultaneously, open big vortex ring air outlet and close little vortex ring air outlet simultaneously, realize the air-out in turn of big and small vortex ring, increase the device air volume in the unit interval, and prevented to cut the condition that the air current that the runner closed and lead to blocks up at every turn constantly, reduce the whole energy consumption of device.
Further, the alternate intercepting means and the driving means are arranged in sequence along the axis of the first blowing duct 3.
Furthermore, the alternate cut-off device comprises a second gradually-reducing nozzle 11, a second air supply pipeline 9, a delayed cut-off pipeline 10 and a support 8, the second air supply pipeline 9 is sleeved in the first air supply pipeline 3, the delayed cut-off pipeline 10 is fixedly sleeved outside the second air supply pipeline 9 and is arranged in the first gradually-reducing nozzle 12, the second gradually-reducing nozzle 11 is fixedly arranged at the outlet end of the second air supply pipeline 9, the driving device is fixedly arranged on the first air supply pipeline 3 and is connected with a fixing plate, the fixing plate is arranged at the inlet end of the second air supply pipeline 9, the output end of the driving device is connected with the second air supply pipeline 9 through the support, and the driving device drives the second air supply pipeline 9 and the delayed cut-off pipeline 10 to move up and down along the axis of the first air supply pipeline 3;
when No. two blast ducts 9 and time delay cut off pipeline 10 and be in initial position, the fixed plate makes No. two blast ducts 9's entrance point seal, time delay cut off pipeline 10 and be located the exit end top of a convergent spout 12, with a convergent spout 12 contactless, when No. two blast ducts 9 and time delay cut off pipeline 10 and move down to cutting off the position, the fixed plate breaks away from with No. two blast ducts 9's entrance point, make No. two blast ducts 9's entrance point open, time delay cuts off the outer lane of pipeline 10 and cup joints with a convergent spout 12, make No. two convergent spouts 11 cut off and seal.
Further, the driving device comprises a motor and a screw rod 7, the motor is fixedly arranged on the fixing plate, the output end of the motor is connected with one end of the screw rod 7, the other end of the screw rod 7 penetrates through the fixing plate to be connected with the support through threads, the support is arranged in the second air supply pipeline 9 and is connected with the inner wall of the second air supply pipeline 9, and the motor drives the screw rod 7 to rotate to drive the support and the second air supply pipeline 9 to move up and down.
Further, the support is a cross-shaped support 8, the screw rod 7 is connected with the center of the cross-shaped support 8 through threads, and the outer end of the cross-shaped support 8 is connected with the inner wall of the second air supply pipeline 9.
Furthermore, drive arrangement still includes fixed cavity, and fixed cavity sets firmly on the fixed plate, and the motor sets up in fixed cavity, and fixed cavity passes through branch and is connected fixedly with the inner wall of supply air duct 3 No. one.
Further, the fixed chamber is a conical fixed chamber 4, and a conical head of the conical fixed chamber 4 faces to an inlet end of the first air supply channel.
Furthermore, the delay cut-off pipeline 10 is fixedly sleeved with the second air supply pipeline 9 through threads.
Further, the motor is a stepping motor 6.
Further, the fan is an axial flow fan 2.
Furthermore, all the parts such as the second reducing nozzle 11, the second air supply pipeline 9 and the like are coaxially connected; the inner diameter of the second reducing nozzle 11 is the same as the outer diameter of the second air supply pipeline 9, and the two are connected through nesting. The outer diameter of the bottom circle of the conical fixed chamber 4 is slightly larger than the inner diameter of the second air supply pipeline 9, so that the conical fixed chamber can move in the second air supply pipeline 9 and approximately block air.
No. two convergent spout 11 outsides are provided with the round arch of threaded hole, and the round hole has been seted up at pipeline 10 tops is cutd in the time delay, and the round hole internal diameter is the same with No. two supply air duct 9 external diameters, sets up the screw hole the same with No. two convergent spout 11 screw holes around the round hole, and the time delay is cutd pipeline 10 and No. two convergent spout 11 and is connected through the screw hole that corresponds. The outer diameter of the delayed intercepting pipeline 10 is slightly smaller than the inner diameter of the first reducing nozzle 12. When the delayed cutoff pipe 10 moves to the first tapered nozzle 12, the gas can be approximately cut off, and the pipe can reciprocate at the nozzle.
The round hole has been seted up to cross support 8 central authorities, and its internal diameter is the same with step motor 6 lead screw external diameters, and both connect through interference fit, and cross support 8 outer end is provided with the screw hole, and No. two supply air duct 9 inner walls are provided with the round arch, offer the screw hole the same with cross support 8 screw hole in the arch, and cross support 8 links to each other through the screw hole with No. two supply air duct 9.
The main body of the conical fixing chamber 4 is conical, four supporting rods are arranged at the top of the conical fixing chamber 4, and one end of each supporting rod is provided with a screw hole; the stepping motor 6 is fixed on the motor fixing plate 5 through a screw hole, the outer diameter of the motor fixing plate 5 is the same as the inner diameter of the conical fixing chamber 4, and the motor fixing plate 5 and the conical fixing chamber are connected through nesting. The motor fixing plate 5 and the conical fixing chamber 4 are nested to form a closed hollow conical object.
The inner wall of the first air supply pipeline 3 is provided with a positioning bulge connected with the conical fixing cavity 4, and four screw holes arranged on the bulge correspond to screw holes at the end parts of four support rods at the top of the conical fixing cavity 4. The inner diameter of the first reducing nozzle 12 is the same as the outer diameter of the first blast pipeline 3, and the first reducing nozzle and the first blast pipeline are connected through nesting.
The working principle of the invention is as follows: referring to fig. 1, the invention provides an alternative air outlet vortex ring generating device, wherein an axial flow fan 2 positioned on a first air supply pipeline 3 pumps external air flow into the device, initially, a time delay cut-off pipeline 10 of the alternative cut-off device is positioned on the upper part of a first reducing nozzle 12, air pumped by the axial flow fan 2 flows out of the first reducing nozzle 12, at the next moment, a stepping motor 6 rotates to drive a screw rod 7 to move downwards and further drive the whole alternative cut-off device to move downwards, at the moment, the time delay cut-off pipeline 10 is in contact with the first reducing nozzle 12 to approximately cut off the air flow, and the time delay cut-off pipeline 10 has a certain length, so that the first reducing nozzle 12 is always in a closed state within a period of time. When the delayed cutoff pipeline 10 is in contact with the first reducing nozzle 12, the second air supply pipeline 9 is separated from the conical fixed cavity 4, air flows out of the newly opened second pipeline 9, and a vortex ring is generated at the position of the second reducing nozzle 11. At the next moment, the motor 6 rotates reversely, the alternative cut-off device moves reversely, the delay cut-off pipeline 10 leaves the first reducing nozzle 12, the flow channel is opened again, the second air supply pipeline 9 is contacted with the conical fixed cavity 4 again, and the flow channel is closed, so that a cut-off period is realized, and two vortex rings with one large and one small are generated in one cut-off period. Two vortex rings alternately exhaust air, so that the problem of closed airflow congestion of a flow channel at the moment of cutting is solved, the energy loss of the airflow is reduced, and the ventilation quantity of the device is improved.
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.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110054315.4A CN112901607B (en) | 2021-01-15 | 2021-01-15 | A vortex ring generating device with alternate air supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110054315.4A CN112901607B (en) | 2021-01-15 | 2021-01-15 | A vortex ring generating device with alternate air supply |
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| Publication Number | Publication Date |
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| CN112901607A true CN112901607A (en) | 2021-06-04 |
| CN112901607B CN112901607B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110054315.4A Active CN112901607B (en) | 2021-01-15 | 2021-01-15 | A vortex ring generating device with alternate air supply |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0242582A1 (en) * | 1986-04-25 | 1987-10-28 | Hesco Pilgersteg AG | Outlet with a vortex flow |
| CN210003609U (en) * | 2019-05-21 | 2020-01-31 | 武汉理工大学 | rotary cutting type vortex ring generating device |
| CN111322290A (en) * | 2020-03-16 | 2020-06-23 | 武汉理工大学 | Cavity contraction vortex ring generation device based on bionic jellyfish principle |
| CN111412203A (en) * | 2020-03-16 | 2020-07-14 | 武汉理工大学 | Hydraulic drive-based section mutation double-cavity vortex ring exciter |
| CN111765149A (en) * | 2020-06-01 | 2020-10-13 | 武汉理工大学 | A vortex ring generator based on the axial disturbance of electric field |
-
2021
- 2021-01-15 CN CN202110054315.4A patent/CN112901607B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0242582A1 (en) * | 1986-04-25 | 1987-10-28 | Hesco Pilgersteg AG | Outlet with a vortex flow |
| CN210003609U (en) * | 2019-05-21 | 2020-01-31 | 武汉理工大学 | rotary cutting type vortex ring generating device |
| CN111322290A (en) * | 2020-03-16 | 2020-06-23 | 武汉理工大学 | Cavity contraction vortex ring generation device based on bionic jellyfish principle |
| CN111412203A (en) * | 2020-03-16 | 2020-07-14 | 武汉理工大学 | Hydraulic drive-based section mutation double-cavity vortex ring exciter |
| CN111765149A (en) * | 2020-06-01 | 2020-10-13 | 武汉理工大学 | A vortex ring generator based on the axial disturbance of electric field |
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| Publication number | Publication date |
|---|---|
| CN112901607B (en) | 2022-06-03 |
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