CN111306828B - Self-exciting micro-jet controlled multitube oscillator - Google Patents
Self-exciting micro-jet controlled multitube oscillator Download PDFInfo
- Publication number
- CN111306828B CN111306828B CN202010235690.4A CN202010235690A CN111306828B CN 111306828 B CN111306828 B CN 111306828B CN 202010235690 A CN202010235690 A CN 202010235690A CN 111306828 B CN111306828 B CN 111306828B
- Authority
- CN
- China
- Prior art keywords
- jet
- micro
- communicated
- self
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005452 bending Methods 0.000 claims description 6
- 230000002146 bilateral effect Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 238000003698 laser cutting Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 abstract description 24
- 239000012530 fluid Substances 0.000 abstract description 19
- 230000005284 excitation Effects 0.000 abstract description 12
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 230000000737 periodic effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 18
- 230000009471 action Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000010356 wave oscillation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention belongs to the technical field of jet control engineering refrigeration of pressure gas, relates to a self-excited micro-jet control multi-tube oscillator, and is special equipment necessary for gas jet control such as refrigeration machinery. According to the invention, the same air source fluid which is equal to the total pressure of the main jet flow is separated from the main jet flow, and is introduced into the self-excitation oscillation cavity from the outside, so that self-excitation oscillation is performed to generate periodic microjet, the main jet flow is pushed from the vertical excitation port to the wall-attached side, and the main jet flow is oscillated in a push-pull main jet flow mode, so that the total pressure is improved and kept, continuous oscillation is finally achieved, and the problem of high energy consumption caused by self-excitation jet flow oscillation is solved. The self-excited micro-jet control multi-tube oscillator has the characteristics of simple structure, convenient operation and maintenance and the like, does not need external power, runs stably and reliably, and is suitable for treating high-pressure gas media.
Description
Technical Field
The invention belongs to the technical field of jet control engineering refrigeration of pressure gas, relates to a self-excited micro-jet control multi-tube oscillator, and is special equipment necessary for gas jet control such as refrigeration machinery.
Background
Jet flow is a special type of fluid movement, and the problem of jet flow is related to the technical fields of aviation industry, hydraulic engineering, medical and health, automatic control and the like, so the jet flow is an important content of fluid mechanics research. The jet oscillator is based on jet theory, and a feedback channel is added on the basis of a jet oscillation element to generate fluid oscillation, so that flow measurement is realized by measuring the oscillation frequency of fluid. Theoretical analysis on jet essence and characteristics is a precondition for researching a jet oscillator, and lays a foundation for researching a micro-channel jet oscillator.
The working medium of the fluidic element is a fluid and can be divided into different categories. The fluid flow mechanism inside the element can be divided into three categories, namely turbulent flow, wall attachment and momentum exchange. The coanda jet element is a jet element in which the main jet is in a chamber of a specific shape and which is made by utilizing the coanda effect produced by imbalances in entrainment of fluid.
Compared with the actuating mechanism of the jet control device of the movable equipment, the static wall-attached jet controller has the advantages of good reliability, small volume, high power, low cost and the like, can adapt to severe working environments such as strong radiation, strong corrosion, strong vibration, strong impact and the like, and has no loss interference. Therefore, the jet controller is widely applied to complex working conditions such as high radiation, strong magnetic field, inflammability, explosiveness and the like or in a pure fluid working system, such as certain control systems in the fields of nuclear industry, aerospace and the like. Meanwhile, the wall-attached jet has switchable characteristics, and can realize flow control and fluid measurement, so that the jet controller is also applied to the aspects of hydraulic excitation, jet flow meters and the like in petroleum exploitation. Bistable coanda jet elements are an important direction of their development.
The gas distribution unit-wall-attached oscillator in static gas wave refrigerator is used to generate oscillating pulse jet and is the embodiment of wall-attached bistable jet element in practical application. In the past, the wall-attached oscillator adopts an excitation method of shunting the main jet flow and then returning the main jet flow to act on the main jet flow, so that the main jet flow is continuously switched to form oscillation, and the wall-attached oscillator is called a self-excited wall-attached oscillator. According to the different feedback lines, the feedback type, the acoustic wave type, the resonance type and the load type can be divided. Self-excitation is simple to implement, but the energy loss of oscillation is mostly up to one third.
The self-excited coanda oscillator is used as a gas distribution unit in a static gas wave machine and provides periodic oscillation jet flow for subsequent refrigeration. So far, there have been many studies on three types of wall-attached oscillators of the feedback type, the sonic type and the resonance type. The sound wave type coanda oscillator is introduced into a static air wave refrigerator, and is communicated with openings at two sides of the cavity of the oscillator through a sound wave pipe, so that a pressure change signal generated during coanda switching of jet flow is transmitted to the other side, the jet flow is switched back and forth, and coanda oscillation occurs. The acoustic wave oscillation type jet flow coanda oscillation refrigerator has superior working performance compared with the prior art. The geometric parameters of the sonic coanda oscillator are carefully studied. However, the research emphasis tends to be on the influence of the geometric dimension on the oscillator vibration performance, the flow characteristic analysis of the flow field in the oscillator and the influence of the oscillation frequency, and relatively little research is done on energy efficiency. The total pressure retention rate K of evaluation indexes defining the energy efficiency characteristic and jet deflection characteristic of the coanda oscillator is large in total pressure loss of the self-excited coanda oscillator (positive feedback type, sonic type and resonance type), and the total pressure of the self-excited flow is reduced and faded prematurely due to the flow passage loss, so that the total pressure is the main cause of energy loss. However, the excitation is only carried out by the split feedback of the main jet, and no matter what way is adopted, the two conditions of increasing the total pressure of the excitation flow and providing the continuous excitation driving force cannot be met.
Disclosure of Invention
In order to solve the problem of high energy consumption caused by self-excitation, the invention provides the self-excitation micro-jet control multi-tube oscillator which has no moving element, simple structure, convenient operation and maintenance, no need of external power (energy), stable and reliable operation and suitability for processing high-pressure gas media.
The invention adopts the same air source fluid which is separated from the main jet and is equal to the total pressure of the main jet to be introduced into the self-excitation oscillation cavity from the outside, the self-excitation oscillation is carried out to generate periodic microjet, the main jet is pushed from the vertical excitation port to the wall-attached side, and the main jet is oscillated in a push-pull main jet mode, so that the total pressure is improved and sustained. The self-excited oscillation cavity uses a sonic oscillating jet generator as the microjet controller of the present invention to distribute the primary jet.
The principle of the oscillating jet generator is based on the jet coanda bistable effect and the jet steady state disturbance switching characteristics. Since it is not possible for a stationary refrigerator to be provided with a periodic source of disturbance from the outside, a self-exciting condition is necessary to generate self-exciting oscillations like an electronic oscillating circuit. The oscillator structure of the acoustic wave type wall-attached oscillator is characterized in that control ports on two sides of an oscillating cavity are directly connected into a closed pipeline, and the closed pipeline is called an acoustic wave tube (control tube). The control tube is an important component of the self-excited coanda oscillator, and the difference of the structural positions of the control tube determines the type and excitation principle of the self-excited oscillator. In the acoustic wall-attached oscillator, fluid entrainment occurs at the orifice of the acoustic tube, and a pressure difference is formed at the openings at both sides of the orifice of the acoustic tube. Under the action of pressure difference, the jet flow periodically generates wall attachment switching to form oscillation jet flow.
The total pressure loss of the self-excited wall-attached oscillators (positive feedback type, sonic type and resonance type) is large, and the total pressure of the self-excited flow is reduced and faded prematurely due to the flow channel loss, which is the main cause of energy loss.
The oscillating jet generator in the invention corresponds to the energy loss problem method as follows: and separating a small part of the same air source fluid which is equal to the total pressure of the main jet flow from the main jet flow, introducing the same air source fluid into a self-excitation oscillating cavity from the outside, and performing self-excitation oscillating jet flow, wherein the oscillating micro-jet flow serves as a main jet flow excitation source, and switching and controlling the main jet flow.
The technical scheme adopted for solving the technical problems is as follows:
the self-excited micro-jet control multi-tube oscillator mainly comprises an oscillating body 18 and a cold air recoverer 21;
The oscillating body 18 comprises a bottom plate, an upper cover 12, a micro-jet inlet pipe 13, an elbow 14, a tee joint 15, a main jet inlet pipe 16, an inlet pipe 17, a pipe fixing device 24 and a receiving pipe 11; different cavities and flow channels are formed on the upper surface of the bottom plate, the flow channels 19 of the oscillating body 18 are formed after the cavities are communicated with each other, and the flow channels 19 are of a bilateral symmetry structure and comprise a microjet inflow cavity 1, a microjet nozzle flow channel 2, a sound wave control tube 3, a bifurcation flow channel 4, a main jet inflow cavity 5, a main jet nozzle flow channel 6, a jet control port 7, an oscillating cavity 8, a multi-tube bifurcation flow channel 9, an exhaust port 10 and an exhaust channel 20; the sound wave control tube 3 is positioned at the front end of the oscillating body 18 to form a square annular flow channel, the micro-jet inflow oral cavity 1 and the micro-jet nozzle flow channel 2 are positioned in the square annular ring formed by the sound wave control tube 3, one end of the micro-jet nozzle flow channel 2 is communicated with the micro-jet inlet cavity 1, and the other end of the micro-jet nozzle flow channel is communicated with the middle position of one side of the sound wave control tube 3; the bifurcation runner 4 is of a bilateral symmetry structure and surrounds a water drop-shaped annular runner, the left part and the right part respectively comprise a straight line section and a bending section, the straight line section is communicated with the bending section in an end-to-end mode, the outer side ends of the two straight line sections are intersected at the middle position of one side of the acoustic wave control pipe 3, and therefore the bifurcation runner 4 is communicated with the micro-jet inlet cavity 1 and the micro-jet nozzle runner 2, and the outer side ends of the bending sections are intersected at the jet control port 7; the main jet inlet cavity 5 and the main jet nozzle flow channel 6 are positioned in a water drop-shaped ring surrounded by the bifurcation flow channel 4, one end of the main jet nozzle flow channel 6 is communicated with the main jet inlet cavity 5, and the other end is communicated with the jet control port 7; the oscillating cavity 8 and the multi-pipe bifurcation runner 9 are positioned at the rear end of the oscillating body 18, one end of the oscillating cavity 8 is communicated with the jet flow control port 7, and the other end is communicated with the front end of the multi-pipe bifurcation runner 9; the tail part of the oscillating body 18 is provided with a plurality of exhaust ports 10, and the exhaust ports 10 are respectively communicated with each bifurcation at the rear end of the multi-tube bifurcation runner 9; the receiving pipe 11 is arranged on the exhaust port 10 from the outer side of the tail part of the oscillating body 18 and is fixed by a pipe fixing device 24;
The upper cover 12 is covered on the bottom plate, two through holes are formed in the upper cover 12 and correspond to the microjet inflow cavity 1 and the main jet inflow cavity 5 respectively, a microjet inlet pipe 13 and a main jet inlet pipe 16 are arranged on the through holes respectively, the microjet inlet pipe 13 is communicated with the microjet inflow cavity 1, and the main jet inlet pipe 16 is communicated with the main jet inflow cavity 5; an inlet pipe 17 is installed outside the upper cover 12, and the inlet pipe 17 is communicated with the micro-jet inlet pipe 13 and the main jet inlet pipe 16 through the elbow 14 and the tee 15;
The tail part of the bottom plate is provided with a plurality of inclined exhaust channels 20 penetrating through the bottom of the bottom plate, and the exhaust channels 20 correspond to the exhaust ports 10 and are communicated with each other;
the cold air recoverer 21 is arranged at the bottom of the tail end of the oscillating body 18 and comprises a cold air outlet cavity 23 and a cold air outlet 22, wherein the cold air outlet cavity 23 is communicated with the cold air outlet 22; the plurality of exhaust passages 20 are each in communication with a cold air outlet chamber 23, and cold air is discharged from the cold air outlet 22.
The bottom plate, the upper cover 12 and the cold air recoverer 21 are fixed by bolts 25.
The inclination angle of the exhaust passage 20 is 45 degrees, and the angle between the branches of the multi-pipe branch flow passage 9 is 10 degrees to 50 degrees.
The oscillating body 18 is made of acrylic plate or metal, is processed by laser cutting, and is slowly transited to a circular section at the rectangular section position of the oscillating jet outlet.
The length of the extension of the end of the receiving tube 11 is determined according to practical requirements, and the tube is connected with the outside through a tube joint.
The invention has the beneficial effects that: the micro-jet control main jet is that no moving parts are used for sealing, and the oscillator of the expansion refrigerator has the advantages of good reliability, small volume, high power and low cost and is suitable for treating high-pressure gas medium. And can adapt to severe working environments such as strong radiation, strong corrosion, strong vibration, strong impact and the like, and no electronic interference exists. Therefore, the system can be widely applied to complex working conditions such as high radiation, strong magnetic field, inflammability, explosiveness and the like or pure fluid working systems, such as certain control systems in the fields of nuclear industry, aerospace and the like. Meanwhile, the coanda jet flow has switchable characteristics, and can realize flow control.
Drawings
FIG. 1 is a schematic diagram of an apparatus for self-exciting a microfluidic control multi-tube oscillator according to the present invention.
Fig. 2 is a top view of the self-exciting microfluidic control multi-tube oscillator of the present invention.
Fig. 3 is a front view of a self-exciting microfluidic control multi-tube oscillator of the present invention.
Fig. 4 is a side view of a self-exciting microfluidic control multi-tube oscillator of the present invention.
In the figure: the device comprises a1 jet inflow cavity, a 2 micro-jet nozzle runner, a 3 sonic wave control tube, a 4 branch runner, a 5 main jet inlet cavity, a 6 main jet nozzle runner, a 7 jet control port, an 8 oscillation cavity, a 9 multi-tube branch runner, a 10 exhaust port, a 11 receiving tube, a 12 upper cover, a 13 micro-jet inlet tube, a 14 elbow, a 15 tee joint, a 16 main jet inlet tube, a 17 inlet tube, a 18 oscillation machine body, a 19 runner, a 20 exhaust passage, a 21 air recoverer, a 22 cold air outlet, a 23 air outlet cavity, a 24 pipe fixing device and 25 bolts.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and technical schemes.
An exemplary embodiment of the present invention is as follows:
The method comprises the steps of separating the same air source fluid which is equal to the total pressure of the main jet flow from the main jet flow, introducing the same air source fluid into a self-excitation oscillation cavity from the outside, carrying out self-excitation oscillation to generate periodic microjet, pushing the main jet flow from a vertical excitation port to the wall-attached side, and oscillating the main jet flow in a push-pull main jet flow mode, so that the total pressure is improved and kept. The self-excited oscillation cavity uses a sonic oscillating jet generator as the microjet controller of the present invention to distribute the primary jet. The change of the length of the sound wave control tube can change the switching frequency of the micro-jet attached wall.
As shown in fig. 3, the self-excited micro-jet control multi-tube oscillator of the present invention mainly comprises an oscillating body 18 and a cold air recoverer 21.
As shown in fig. 2, the oscillating body 18 includes a bottom plate, an upper cover 12, a microfluidic inlet tube 13, an elbow 14, a tee 15, a main fluidic inlet tube 16, an inlet tube 17, a tube holder 24, and a receiving tube 11; different cavities and flow channels are formed on the upper surface of the bottom plate, the flow channels 19 of the oscillating body 18 are formed after the cavities are communicated with each other, and the flow channels 19 are of a bilateral symmetry structure and comprise a microjet inflow cavity 1, a microjet nozzle flow channel 2, a sound wave control tube 3, a bifurcation flow channel 4, a main jet inflow cavity 5, a main jet nozzle flow channel 6, a jet control port 7, an oscillating cavity 8, a multi-tube bifurcation flow channel 9, an exhaust port 10 and an exhaust channel 20.
As shown in fig. 3, the upper cover 12 is covered on the bottom plate, and two through holes are formed on the upper cover 12 for installing the micro-jet inlet pipe 13 and the main jet inlet pipe 16; an inlet pipe 17 is installed outside the upper cover 12, and the inlet pipe 17 is communicated with the micro-jet inlet pipe 13 and the main jet inlet pipe 16 through the elbow 14 and the tee 15; the tail of the bottom plate is provided with a plurality of inclined exhaust channels 20 penetrating through the bottom of the bottom plate, and the exhaust channels 20 are communicated with the exhaust port 10.
As shown in fig. 4, the cold air recoverer 21 includes a cold air outlet chamber 23 and a cold air outlet 22, and a plurality of exhaust passages 20 are each communicated with the cold air outlet chamber 23, and the cold air is discharged from the cold air outlet 22.
The working principle of the invention is shown in figure 1, and is specifically as follows: the same air source fluid with the same main jet total pressure enters the micro jet inflow cavity 1 from the inlet pipe 17 and the micro jet inlet pipe 13, then enters the micro jet nozzle runner 2, and then enters the bifurcation runner 4 through the pressure signal switching of the sound wave control pipes 3 at the two sides, so that the micro jet becomes an excitation source of the main jet; the main jet enters the main jet nozzle runner 6 from the inlet pipe 17 and the main jet inlet pipe 16 through the main jet inflow cavity 5, then enters the oscillating cavity 8 through the jet control port 7, the jet control port is positioned at the front end of the oscillator 8 and at the tail end of the main jet nozzle runner 6, and microjet injected by the jet control port 7 pushes and pulls the main jet to oscillate, and then enters the multi-pipe bifurcation runner 9 from the oscillating cavity 8. The sharp angle of the front end of the multi-pipe bifurcation runner 9 can ensure that all jet flow with the wall flows into the aligned runner. The oscillating jet flow generator is correspondingly provided with jet flow attached walls at two sides, 5 branched flow passages extend, the positions in front of the receiving pipes 11 at the backward extending positions of the 5 flow passages are symmetrically divided into flow passages by 10-50 degrees respectively, the flow passages are led into the cold air recoverer 21 through the exhaust passages 20 formed obliquely downwards at 45 degrees, and jet flow gas in the pipes flows into the cold air outlet cavity 23 with relatively low pressure from the exhaust passages 20 under the action of higher pressure of the retention gas at the rear section and then flows out from the cold air outlet 22.
The high-pressure gas flows into the oral cavity 1 and the main jet inlet cavity 5 from the microjet and simultaneously enters the flow channel 19, the microjet is in the sonic coanda oscillator, the orifice of the sonic control tube 3 can be sucked by fluid, and a pressure difference is formed at the openings at the two sides of the orifice of the sonic control tube 3. Under the action of pressure difference, the main jet flow periodically generates wall-attached switching, and the jet flow can alternately enter two flow channels.
Outlets of the two flow channels opposite to the oscillation jet generator are jet control ports 7, and the injected microjet carries out push-pull on the main jet to enable the main jet to oscillate and enter a multi-pipe bifurcation flow channel 9. The oscillating jet flow generator is provided with jet flow attached walls at two corresponding sides, branched 5 flow passages extend, corresponding 5 receiving pipes 11 are arranged at the backward extending position of the 5 flow passages, the tail ends of the corresponding 5 receiving pipes are corresponding to air wave pipes, pulse jet flow periodically enters the air wave pipes, each pulse jet flow can compress original gas in the pipe, a contact surface is formed between the two gases, a series of compression waves are generated in front of the contact surface, and the compression waves are converged into an excitation wave front due to the continuous increase of local sound velocity. The stroke of the shock wave sweep, the gas pressure and temperature jump, i.e. the jet, through rapid compression, transfers energy to the gas trapped in the tube by means of the wave system and is emitted to the environment through the tube wall. When pulse jet stops, the nozzle generates a beam of expansion wave which moves forward inwards, the jet gas after sweeping the contact surface reduces parameters such as temperature, pressure and the like, then the jet gas in the pipe is obliquely downwards provided with an exhaust port 10 at 45 degrees from the lower end of the position of the multi-pipe bifurcation channel 9 at the front end of the receiving pipe 11 under the action of the higher pressure of the residual gas at the rear section, flows into a cold air outlet cavity 23 with relatively low pressure through an exhaust channel 20, and flows out from a cold air outlet 22 to finish refrigeration.
Claims (5)
1. The self-excited micro-jet control multi-tube oscillator is characterized by comprising an oscillator body (18) and a cold air recoverer (21);
The oscillating machine body (18) comprises a bottom plate, an upper cover (12), a micro-jet inlet pipe (13), an elbow (14), a tee joint (15), a main jet inlet pipe (16), an inlet pipe (17), a pipe fixing device (24) and a receiving pipe (11); different cavities and flow channels are formed in the upper surface of the bottom plate, and the flow channels (19) of the oscillating body (18) are formed after the cavities are communicated with each other, wherein the flow channels (19) are of a bilateral symmetry structure and comprise a microjet inflow cavity (1), a microjet nozzle flow channel (2), a sonic control tube (3), a bifurcation flow channel (4), a main jet inlet cavity (5), a main jet nozzle flow channel (6), a jet control port (7), an oscillating cavity (8), a multi-tube bifurcation flow channel (9), an exhaust port (10) and an exhaust channel (20); the sound wave control tube (3) is positioned at the front end of the oscillating body (18) to form a square annular flow passage, the micro-jet inlet cavity (1) and the micro-jet nozzle flow passage (2) are positioned in the square ring formed by the sound wave control tube (3), one end of the micro-jet nozzle flow passage (2) is communicated with the micro-jet inlet cavity (1), and the other end of the micro-jet nozzle flow passage is communicated with the middle part of one side of the sound wave control tube (3); the bifurcation runner (4) is of a bilateral symmetry structure and surrounds a water drop-shaped annular runner, the left part and the right part respectively comprise a straight line section and a bending section, the straight line section is communicated with the bending section in an end-to-end mode, the outer side ends of the two straight line sections are intersected at the middle position of one side of the sonic control pipe (3), and accordingly the bifurcation runner (4) is communicated with the micro-jet inlet cavity (1) and the micro-jet nozzle runner (2), and the outer side ends of the bending sections are intersected at the jet control port (7); the main jet inlet cavity (5) and the main jet nozzle runner (6) are positioned in a water drop-shaped ring surrounded by the bifurcation runner (4), one end of the main jet nozzle runner (6) is communicated with the main jet inlet cavity (5), and the other end is communicated with the jet control port (7); the oscillating cavity (8) and the multi-pipe bifurcation runner (9) are positioned at the rear end of the oscillating body (18), one end of the oscillating cavity (8) is communicated with the jet flow control port (7), and the other end is communicated with the front end of the multi-pipe bifurcation runner (9); the tail part of the oscillating machine body (18) is provided with a plurality of exhaust ports (10), and the exhaust ports (10) are respectively communicated with each bifurcation at the rear end of the multi-tube bifurcation runner (9); the receiving pipe (11) is arranged on the exhaust port (10) from the outer side of the tail part of the oscillating body (18) and is fixed through the pipe fixing device (24);
The upper cover (12) is covered on the bottom plate, two through holes are formed in the upper cover (12) and correspond to the micro-jet inlet cavity (1) and the main jet inlet cavity (5) respectively, a micro-jet inlet pipe (13) and a main jet inlet pipe (16) are arranged on the through holes respectively, the micro-jet inlet pipe (13) is communicated with the micro-jet inlet cavity (1), and the main jet inlet pipe (16) is communicated with the main jet inlet cavity (5); an inlet pipe (17) is arranged outside the upper cover (12), and the inlet pipe (17) is communicated with the micro-jet inlet pipe (13) and the main jet inlet pipe (16) through an elbow (14) and a tee joint (15);
The tail part of the bottom plate is provided with a plurality of inclined exhaust channels (20) penetrating through the bottom of the bottom plate, and the exhaust channels (20) correspond to the exhaust ports (10) and are communicated with each other;
The cold air recoverer (21) is arranged at the bottom of the tail end of the oscillating body (18) and comprises a cold air outlet cavity (23) and a cold air outlet (22), wherein the cold air outlet cavity (23) is communicated with the cold air outlet (22); the plurality of exhaust passages (20) are communicated with the cold air outlet chamber (23), and the cold air is discharged from the cold air outlet (22);
the bottom plate, the upper cover (12) and the cold air recoverer (21) are fixed through bolts (25).
2. A self-exciting microfluidic control multitube oscillator according to claim 1, characterized in that the inclination angle of the exhaust channel (20) is 45 °, the angle between the individual branches of the multitube branch flow channel (9) is 10 ° to 50 °.
3. Self-excited micro-jet controlled multi-tube oscillator according to claim 1 or 2, characterized in that the oscillating body (18) is made of acrylic plate or metal, is processed by laser cutting, and is slowly transited to a circular section at the rectangular section position of the oscillating jet outlet.
4. Self-exciting microfluidic control multitube oscillator according to claim 1 or 2, characterized in that the length of the end extension of the receiving tube (11) is determined as practical, with a tube connection to the outside.
5. A self-exciting microfluidic control multitube oscillator according to claim 3, characterized in that the length of the end extension of the receiving tube (11) is determined as practical, and is connected to the outside with a tube joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235690.4A CN111306828B (en) | 2020-03-30 | 2020-03-30 | Self-exciting micro-jet controlled multitube oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235690.4A CN111306828B (en) | 2020-03-30 | 2020-03-30 | Self-exciting micro-jet controlled multitube oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111306828A CN111306828A (en) | 2020-06-19 |
| CN111306828B true CN111306828B (en) | 2024-07-12 |
Family
ID=71150283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010235690.4A Active CN111306828B (en) | 2020-03-30 | 2020-03-30 | Self-exciting micro-jet controlled multitube oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111306828B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019789B (en) * | 2021-03-19 | 2022-02-15 | 大连理工大学 | Wall-separating type feedback jet oscillator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212006287U (en) * | 2020-03-30 | 2020-11-24 | 大连大学 | Self-excited micro-jet control multi-tube oscillator |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267685C (en) * | 2004-03-12 | 2006-08-02 | 大连理工大学 | Multi-tube jetting oscillating refrigerator and its refrigeration method |
| CN100575900C (en) * | 2005-12-30 | 2009-12-30 | 大连理工大学 | A kind of multifunctional gas wave refrigerating jet stream field displaying apparatus and measuring method |
| CN101294750B (en) * | 2008-05-23 | 2011-04-27 | 大连理工大学 | Feedback type oscillating jet stream refrigerating machine |
| DE102009028007A1 (en) * | 2009-07-24 | 2011-01-27 | Endress + Hauser Flowtec Ag | Measuring transducer of the vibration type and measuring device with such a transducer |
| DE102010010790A1 (en) * | 2010-03-09 | 2011-09-15 | Universität Stuttgart | Fluidic oscillator for use in aircraft, has flow guide oscillating deflection of fluid upcoming from inlet opening to flow channels, and additional flow channel arranged for formation of reciprocating fluid flow at flow channels |
| CN104315740B (en) * | 2014-09-22 | 2016-03-02 | 大连理工大学 | The multistage oscillating jet air wave refrigerating device of external excitation |
| DE202017106307U1 (en) * | 2017-10-18 | 2017-11-24 | Sonett Vermögensverwaltung Gmbh | Oscillator device for mixing liquids |
-
2020
- 2020-03-30 CN CN202010235690.4A patent/CN111306828B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212006287U (en) * | 2020-03-30 | 2020-11-24 | 大连大学 | Self-excited micro-jet control multi-tube oscillator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111306828A (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111306828B (en) | Self-exciting micro-jet controlled multitube oscillator | |
| CN111397235B (en) | Frequency-adjustable sonic wave jet oscillator | |
| JP5892582B2 (en) | Thermoacoustic engine | |
| CN103808379A (en) | System and method for ultrasonic metering using an orifice meter fitting | |
| CN212006287U (en) | Self-excited micro-jet control multi-tube oscillator | |
| CN101294751B (en) | Gas capacity variable frequency modulation self-excitation oscillation jet stream refrigerating machine | |
| CN101294750B (en) | Feedback type oscillating jet stream refrigerating machine | |
| CN113019789B (en) | Wall-separating type feedback jet oscillator | |
| CN101566405A (en) | Heat-driven thermoacoustic refrigerator device with traveling and standing wave type sound field | |
| CN105526049B (en) | The adjustable traveling wave thermoacoustic engine system of temperature-heat-source in a kind of utilization | |
| CN116273648A (en) | Stable current-sharing jet oscillator | |
| CN1267685C (en) | Multi-tube jetting oscillating refrigerator and its refrigeration method | |
| Iwamoto | Experimental study of flow oscillation in a rectangular jet-driven tube | |
| CN104180550A (en) | Static gas wave refrigerator adopting external excitation and concentrated dissipation | |
| RU144956U1 (en) | THERMAL-ACOUSTIC INSTALLATION FOR LOW-TEMPERATURE COOLING OF MEDIA WITH COAXIAL GEOMETRY OF A WAVEGUIDE CIRCUIT | |
| CN100458148C (en) | Thermoacoustic engine with gradually-enlarged section resonant cavity | |
| CN109798686B (en) | Stirling refrigerator driven by pneumatic sound source | |
| CN111271346A (en) | Primary and secondary fluid oscillator | |
| Abdelmaksoud et al. | A Review on Thermal-Fluid Behavior in Sweeping Jet Fluidic Oscillators | |
| RU2269098C2 (en) | Jet active oscillator and oscillatory flow-measuring apparatus on its basis | |
| SU310341A1 (en) | ALL-UNION PAT?; Ь ^. ^^ - GOCHNICHYA imb “ititz> & tJ & A | |
| CA3135036A1 (en) | System for generating electrical energy | |
| US4565220A (en) | Liquid metering and fluidic transducer for electronic computers | |
| CN107144314A (en) | Linear pattern shell and tube mass flowmenter | |
| CN201945443U (en) | Experimental device for researching jetting and atomizing characteristics of spray nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |