Square high-flow high-pressure piezoelectric air pump with Tesla valve at inlet

Abstract

The utility model discloses a square high-flow high-pressure piezoelectric air pump with an inlet provided with a Tesla valve, which belongs to the technical field of micro piezoelectric pumps and comprises a partition plate I, a pump body I, a pump body II, a partition plate II and a guide plate which are of square plate-shaped structures and fixedly connected in sequence from top to bottom. The pump body II and the pump body I are similar in structure and are oppositely arranged, and a piezoelectric vibrator is arranged between the pump body II and the pump body I and divides a pump body cavity into two parts; the pump body I and the pump body II are each provided with a first quadrant hole, a second quadrant hole, a third quadrant hole, a fourth quadrant hole, an air inlet, an air outlet, a cavity, an air inlet Tesla runner and an air outlet runner. The air outlet is located in the center of the cavity and provided with a one-way valve with the air outlet direction facing outwards. The air inlet Tesla flow channel is of a symmetrical parallel Tesla valve structure and has a one-way conduction effect; the pump body I and the pump body II can realize two working modes of series connection pressure increase and parallel connection flow increase of the two pump cavities by changing the relative assembly connection positions.

Description

Technical Field

[0001] This utility model belongs to the field of micro piezoelectric pump technology, specifically relating to a square high-flow-rate, high-pressure piezoelectric pump with a Tesla valve at the inlet. Background Technology

[0002] Piezoelectric pumps work by utilizing the inverse piezoelectric effect unique to piezoelectric materials. An alternating excitation is applied to the piezoelectric ceramic on the piezoelectric oscillator. Due to the inverse piezoelectric effect, the piezoelectric ceramic deforms and vibrates macroscopically, forcing the pump cavity volume to change, which in turn causes the pressure inside the cavity to change, thereby realizing the transfer of fluid.

[0003] Piezoelectric pumps have advantages such as small size, quiet operation, and long service life. Currently, there are piezoelectric pumps in this field with dual chambers and controllable series-parallel connection of chambers. However, external hoses are usually required for secondary assembly of the flow channel to achieve the connection of the two chambers. This method increases the length of the flow channel, greatly increases the friction resistance, and has a significant impact on the output back pressure of the air pump. In addition, the external hose method will affect the reliability of airtightness, increase the pump body size, and has many other disadvantages.

[0004] Currently available pneumatic pumps typically only have a one-way valve in the outlet flow channel, but there is usually no related one-way rectification device in the inlet flow channel. During the exhaust phase of the pump, some gas will escape from the inlet, reducing the final energy conversion rate.

[0005] The vibrator of the piezoelectric pump has a high vibration frequency. Currently, the check valves used in piezoelectric pumps usually have a slow response speed, resulting in large local losses and a decrease in flow rate and output back pressure. In summary, the output flow rate and pressure of existing piezoelectric pumps are relatively small, which limits their application range. Therefore, how to improve the pumping flow rate and pressure of piezoelectric pumps has become an urgent technical problem to be solved in this field. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned technical problems by providing a square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet.

[0007] A square high-flow-rate, high-pressure piezoelectric pump with a Tesla valve at the inlet includes: a diaphragm I1, a pump body I4, a check valve I7, a piezoelectric vibrator 5, a check valve II8, a pump body II2, a diaphragm II3, and a guide plate 6.

[0008] The aforementioned baffle I1, pump body I4, pump body II2, baffle II3, and guide plate 6 are all square and fixedly connected from top to bottom;

[0009] Pump body II2 is similar in structure to pump body I4. The two are arranged opposite each other and a piezoelectric vibrator 5 is provided between them, which divides the pump body chamber into two. The partition I1 and partition II3 have the same structure and air guide holes are provided on both sides of them.

[0010] Both pump body I4 and pump body II2 are provided with a first quadrant hole, a second quadrant hole, a third quadrant hole, a fourth quadrant hole, an air inlet, an air outlet, a chamber, an air inlet Tesla flow channel, and an air outlet flow channel;

[0011] The first quadrant hole, second quadrant hole, third quadrant hole, and fourth quadrant hole are all through holes, and are symmetrically located at the four corners of the pump body.

[0012] The first quadrant aperture, the air inlet Tesla flow channel, the air inlet, the air outlet, the air outlet flow channel, and the third quadrant aperture are arranged diagonally at 180°.

[0013] Both the air inlet and the air outlet are through holes that connect to a circular chamber inward.

[0014] The air inlet Tesla flow channel and the air outlet flow channel are located on the outside of the pump body and are both groove-shaped structures.

[0015] The air outlet is located in the center of the chamber and is equipped with a one-way valve with the air outlet direction facing outward.

[0016] When in use, the gas in pump body I4 or pump body II2 can be pumped into the chamber through the first quadrant hole, the Tesla flow channel of the air inlet, and the air inlet, and then pumped out through the air outlet, the one-way valve, the air outlet flow channel, and the third quadrant hole.

[0017] The air guide holes of the partition I1 and partition II3 are connected to the quadrant holes for air intake or exhaust of the pump body.

[0018] The aforementioned air inlet Tesla flow channel is a symmetrical parallel Tesla valve structure, which has a unidirectional guiding effect on gas.

[0019] The bottom surfaces of the chambers of pump body I4 and pump body II2 are both curved surfaces to reduce gas loss along the flow path.

[0020] The piezoelectric vibrator 5 is composed of a piezoelectric ceramic 501, an FPC flexible circuit board 502, and a metal matching layer 503 bonded together in sequence; a circular FPC flexible circuit board 502 is pressed between the edge of the pump body II 2 chamber and the edge of the pump body I 4 chamber; the leads of the FPC flexible circuit board 502 pass through the lead groove of the pump body.

[0021] The one-way valve is composed of a metal valve plate assembly I, a metal valve plate assembly II, an elastic plastic valve plate assembly, and a metal valve plate assembly III connected in sequence; the metal valve plate assembly II has three cantilever beams evenly distributed at an included angle of 120°; both the metal valve plate assembly II and the metal valve plate assembly I have through holes in the middle, and the through holes on the metal valve plate assembly I are larger;

[0022] Metal valve plate assembly I, elastic plastic valve plate assembly, and metal valve plate assembly III are all equipped with through holes of the same diameter at equal intervals. These through holes form three regions distributed along the circumference, each region being slightly smaller than the circumferential angle of 120°. These three valve plate assemblies constitute a staggered hole structure.

[0023] The inner side of the guide plate 6 is provided with a V-shaped groove flow channel 603, and the two ends of the V-shaped groove flow channel 603 are referred to as the flow channel end 604, which are matched with the exhaust guide hole of the partition plate II 3; the top of the V-shaped groove flow channel 603 is located at the center of the guide plate 6, and a guide plate center hole 601 is provided, and a nozzle 602 is provided at the corresponding outer center.

[0024] The exhaust gas is gathered at the center of the guide plate through the V-shaped groove channel 603, and then ejected from the nozzle 602 through the center hole 601 of the guide plate.

[0025] The aforementioned square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet adopts:

[0026] 1) Parallel connection method I: Pump body I4 and pump body II2 are set opposite to each other, and their air inlet Tesla flow channels are set at the same angle, that is, their first quadrant holes and third quadrant holes correspond to each other respectively;

[0027] Gas enters the first quadrant holes of pump body I4 and pump body II2 simultaneously from the air guide hole of partition I. The reciprocating vibration of piezoelectric vibrator 5 causes the intake and exhaust of the chambers of pump body I4 and pump body II2 to be asynchronous. Gas is continuously pumped out from the third quadrant holes of pump body I4 and pump body II2, and converges at the center of the guide plate through the air guide hole of partition II3 and the V-shaped groove flow channel 603 of guide plate 6, and is ejected from the nozzle 602.

[0028] 2) Parallel connection method II: The air inlet Tesla flow channel and outlet flow channel of pump body I4 and pump body II2 are set vertically, that is, the line connecting the first quadrant hole and the third quadrant hole of the two are perpendicular in space.

[0029] Gas enters the first quadrant holes of pump body I4 and pump body II2 simultaneously from the air guide holes on both sides of partition I; piezoelectric vibrator 5 reciprocates, and gas is continuously pumped out from the third quadrant holes of pump body I4 and pump body II2. The gas converges at the center of the guide plate through the air guide holes on both sides of partition II3 and the two tail ends of the V-shaped groove flow channel 603 of guide plate 6, and is ejected from nozzle 602.

[0030] 3) Series connection method: The air inlet Tesla flow channels of pump body I4 and pump body II2 are set 180° opposite to each other, that is, the first quadrant holes and the third quadrant holes of the two are opposite to each other;

[0031] In this series connection method, an air-blocking plug 9 needs to be provided in the upper half of the third quadrant hole of the pump body II2; the gas enters the first quadrant hole of the pump body I4 from the air guide hole of the partition I, and does not enter the third quadrant hole of the pump body II2.

[0032] In the series connection method, the gas passes through pump body I4 and pump body II2 in sequence and is discharged from nozzle 602 of guide plate 6, which is a pressure increase mode.

[0033] This utility model provides a square, high-flow, high-pressure piezoelectric pump with a Tesla valve at the inlet, belonging to the field of micro piezoelectric pump technology. It includes: a partition plate I, a pump body I, a pump body II, a partition plate II, and a guide plate, all of which are square plate structures fixedly connected from top to bottom. Pump body II has a similar structure to pump body I, and the two are arranged opposite each other, with a piezoelectric vibrator between them, dividing the pump body chamber into two. Both pump body I and pump body II are provided with a first quadrant hole, a second quadrant hole, a third quadrant hole, a fourth quadrant hole, an air inlet, an air outlet, a chamber, an air inlet Tesla flow channel, and an air outlet flow channel. The air outlet is located at the center of the chamber and is equipped with a one-way valve facing outwards. The air inlet Tesla flow channel is a symmetrically parallel Tesla valve structure with unidirectional conduction. By changing the relative positions of the assembly connections between pump body I and pump body II, two working modes can be achieved: series connection to increase pressure and parallel connection to increase flow rate.

[0034] The present invention provides a technical solution for a square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet, which has the following beneficial effects and advantages:

[0035] 1. The electric piezoelectric pump of this utility model is equipped with Tesla valve structure at the inlet flow channel of pump body I and pump body II, which constructs a valveless unidirectional Tesla flow channel structure, which can realize forward flow and reverse cut-off, and increase the flow rate and pressure during exhaust;

[0036] 2. The piezoelectric pump of this utility model has a small number of parts, a small thickness, and is simple to assemble; each part is manufactured separately, which is easy to process, form, and assemble and package later; it can reduce the cumbersome process steps in mass production, which is conducive to the miniaturization and thinning of piezoelectric micropumps.

[0037] 3. The gas outlets of the upper and lower chambers of the electric piezoelectric pump of this utility model are equipped with one-way valves, which can allow the gas pumped out of the chamber to flow in the forward direction and be cut off in the reverse direction.

[0038] 4. During the vibration deformation of the piezoelectric vibrator between pump body I and pump body II of this utility model, the upper and lower chambers of the piezoelectric pump can continuously complete the air discharge and air intake.

[0039] 5. The pump body I and pump body II of this utility model are designed in a square shape. By changing the assembly method of the pump body, the relative positions of pump body I and pump body II can be changed, thereby changing the connection method of the two chambers in the pump body. That is, the piezoelectric pump has two assembly methods: series and parallel, which can simultaneously meet the requirements of the parallel connection of the two chambers to increase the flow rate and the series connection to increase the pressure. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural diagram of the components of the square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet of this utility model.

[0041] Figure 2 This is a schematic diagram of the pump body I of the square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet, according to the present invention.

[0042] in Figure 2 (a) is a three-dimensional structural diagram of the pump body I of this utility model; Figure 2 (b) is a top view of the pump body I of this utility model;

[0043] Figure 3 This is a schematic diagram of the pump body II of the square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet, according to the present invention.

[0044] in Figure 3 (a) is a three-dimensional structural diagram of the pump body II of this utility model; Figure 3 (b) is a bottom view of the pump body II of this utility model;

[0045] Figure 4 This is a schematic diagram of the partition of a square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet, according to the present invention.

[0046] Figure 5 This is an exploded schematic diagram of the piezoelectric vibrator structure of the square high-flow-rate, high-pressure piezoelectric pump with a Tesla valve at the inlet of this utility model.

[0047] Figure 6 This is an exploded view of the one-way valve structure of the square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet, according to this utility model.

[0048] Figure 7 This is a three-dimensional structural diagram of the guide plate of the square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet, according to this utility model.

[0049] Figure 8 This is a schematic diagram illustrating the working principle of the two pump chambers of the square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet, connected in parallel in configuration I of the present invention.

[0050] Figure 9 This is a schematic diagram illustrating the working principle of the two pump chambers of the square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet of this utility model, connected in parallel in mode II.

[0051] Figure 10 This is a schematic diagram illustrating the working principle of the two pump chambers of the square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet, which are connected in series.

[0052] in:

[0053] 1. Partition I; 101. Air vent I; 102. Air vent II; 3. Partition II;

[0054] 2. Pump body II; 201. First quadrant orifice II; 202. Second quadrant orifice II; 203. Third quadrant orifice II; 204. Fourth quadrant orifice II; 205. Air inlet II; 206. Air outlet II; 207. Chamber II; 208. Annular protrusion; 209. Air inlet Tesla flow channel II; 210. Outlet flow channel II;

[0055] 4. Pump body I; 401. First quadrant hole I; 402. Second quadrant hole I; 403. Third quadrant hole I; 404. Fourth quadrant hole I; 405. Lead wire groove; 406. Air inlet I; 407. Air outlet I; 408. Chamber I; 409. Annular groove; 410. Air inlet Tesla flow channel I; 411. Air outlet flow channel I;

[0056] 5. Piezoelectric vibrator; 501. Piezoelectric ceramic; 502. Flexible printed circuit board (FPC); 503. Metal matching layer;

[0057] 6. Guide vane; 601. Center hole of guide vane; 602. Nozzle; 603. V-shaped groove flow channel; 604. Tail end of flow channel;

[0058] 7. Check valve I; 8. Check valve II; 801. Metal valve plate assembly I; 802. Metal valve plate assembly II; 803. Elastic plastic valve plate assembly; 804. Metal valve plate assembly III; 9. Air breaker plug. Detailed Implementation

[0059] The following will be combined with the appendix Figure 1-10 The present invention will be clearly and completely described in terms of specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0060] Example 1

[0061] See appendix Figure 1-10A square high-flow-rate, high-pressure piezoelectric pump with a Tesla valve at the inlet, comprising: a partition I1, a pump body I4, a check valve I7, a piezoelectric vibrator 5, a check valve II8, a pump body II2, a partition II3, and a guide plate 6;

[0062] The aforementioned baffle I1, pump body I4, pump body II2, baffle II3, and guide plate 6 are all square plate structures that are fixedly connected from top to bottom;

[0063] The pump body II2 and the pump body I4 have similar structures and are arranged opposite to each other. A piezoelectric vibrator 5 is provided between them, which divides the pump body chamber into two.

[0064] The partition I1 and partition II3 are thin metal plates with the same structure. The partition II3 is symmetrically provided with through holes I301 and II302.

[0065] The pump body I4 is provided with a first quadrant hole I401, a second quadrant hole I402, a third quadrant hole I403, a fourth quadrant hole I404, a lead wire groove 405, an air inlet I406, an air outlet I407, a chamber I408, an annular groove 409, an air inlet Tesla flow channel I410, and an air outlet flow channel I411;

[0066] The first quadrant hole I401, the second quadrant hole I402, the third quadrant hole I403, and the fourth quadrant hole I404 are all through holes, and are symmetrically located at the four corners of the pump body I4.

[0067] The first quadrant aperture I401, the air inlet Tesla flow channel I410, the air inlet I406, the air outlet I407, the air outlet flow channel I411, and the third quadrant aperture I403 are arranged diagonally at 180°.

[0068] The air inlet I406 and the air outlet I407 are both through holes that connect to a circular chamber I408. The side of the chamber I408 is provided with an annular groove 409.

[0069] The air inlet Tesla flow channel I410 and the air outlet flow channel I411 are located on the upper side of the pump body I4, and both are groove-shaped structures.

[0070] The air outlet I407 is located at the center of the chamber I408, and a one-way valve I7 with the air outlet direction facing outward (upward) is provided on it; a lead wire groove 405 is provided on one side of the pump body I4;

[0071] In summary, in pump body I4, gas can be pumped into chamber I408 through the first quadrant hole I401, the Tesla flow channel I410, and the inlet I406, and then pumped out through the outlet I407, the one-way valve I7, the outlet flow channel I411, and the third quadrant hole I403.

[0072] The pump body II2 is provided with a first quadrant hole II201, a second quadrant hole II202, a third quadrant hole II203, a fourth quadrant hole II204, an air inlet II205, an air outlet II206, a chamber II207, an annular protrusion 208, an air inlet Tesla flow channel II209, and an outlet flow channel II210;

[0073] The first quadrant hole II201, the second quadrant hole II202, the third quadrant hole II203, and the fourth quadrant hole II204 are all through holes, and are symmetrically located at the four corners of the pump body II2.

[0074] The first quadrant aperture II 201, the air inlet Tesla flow channel II 209, the air inlet II 205, the air outlet II 206, the air outlet flow channel II 210, and the third quadrant aperture II 203 are arranged diagonally at 180°.

[0075] The air inlet II 205 and the air outlet II 206 are both through holes that connect to a circular chamber II 207. The chamber II 207 has an annular protrusion 208 on its side.

[0076] The air inlet Tesla flow channel II209 and the outlet flow channel II210 are located on the lower side of the pump body II2, and both are groove-shaped structures.

[0077] The air outlet II206 is located in the center of the chamber II207, and a one-way valve II8 with the air outlet direction facing outward (downward) is provided on it;

[0078] In summary, in pump body II2, gas can be pumped into chamber II207 through the first quadrant hole II201, the Tesla flow channel II209, and the inlet II205, and then pumped out through the outlet II206, the one-way valve II8, the outlet flow channel II210, and the third quadrant hole II203.

[0079] The air guide holes of the partition I1 and partition II3 are connected to the quadrant holes for air intake or exhaust of the pump body.

[0080] The inlet Tesla flow channel is a symmetrical parallel Tesla valve structure, which is divided into two symmetrical Tesla flow channels by a wedge-shaped wall in the middle. The resistance of the gas passing through the inlet Tesla flow channel in the forward and reverse directions is different, forming a flow difference, which realizes the unidirectional conduction of gas on a macroscopic level.

[0081] In use, the bottom surfaces of chambers I 408 and II 207 are usually designed as arc surfaces to facilitate gas flow and reduce gas loss along the way.

[0082] The piezoelectric vibrator 5 is composed of a piezoelectric ceramic 501, an FPC flexible circuit board 502, and a metal matching layer 503 bonded together in sequence. The metal matching layer 503 is bonded to one side of the FPC flexible circuit board 502, and the piezoelectric ceramic 501 is bonded to the other side using anaerobic adhesive. The FPC flexible circuit board 502 serves as an electrode and generates a piezoelectric effect together with the piezoelectric ceramic 501. A wheel spoke-shaped polyimide film is provided on the circular edge of the FPC flexible circuit board 502. The edge of the circular piezoelectric vibrator 5 (FPC flexible circuit board 502) is pressed between the annular protrusion 208 of the pump body II2 and the annular groove 409 of the pump body I4. The lead wire of the FPC flexible circuit board 502 of the piezoelectric vibrator 5 passes through the lead wire groove 405 of the pump body I4.

[0083] The one-way valve I7 and one-way valve II8 have the same structure. The one-way valve 8 is composed of metal valve plate assembly I801, metal valve plate assembly II802, elastic plastic valve plate assembly 803, and metal valve plate assembly III804 connected in sequence.

[0084] The metal valve plate assembly II 802 has three cantilever beams evenly distributed at an angle of 120°; both the metal valve plate assembly II 802 and the metal valve plate assembly I 801 have through holes in the middle, and the through holes on the metal valve plate assembly I 801 are larger.

[0085] Metal valve plate assembly I 801, elastic plastic valve plate assembly 803, and metal valve plate assembly III 804 are all equally spaced with through holes of the same diameter, and these through holes form three regions distributed along the circumference, each region being slightly smaller than the circumferential angle of 120°; these three valve plate assemblies constitute a staggered hole structure.

[0086] In summary, during use, gas enters from the metal valve assembly III 804 side. If it enters from the metal valve assembly I 801 side, the deformation of the elastic plastic valve assembly 803 will be limited by the metal valve assembly III 804, forming a reverse flow trend; therefore, the one-way valve has a one-way conduction effect; the four valve assemblies of the one-way valve are assembled and positioned by opening semi-circular grooves on the side.

[0087] The upper (inner) side of the guide plate 6 is provided with a V-shaped groove flow channel 603, and the two ends of the V-shaped groove flow channel 603 are referred to as the flow channel end 604, which are matched with the gas guide hole of the partition plate II 3. The top of the V-shaped groove flow channel 603 is located at the center of the guide plate 6, and a guide plate center hole 601 is provided. A nozzle 602 is provided at the center of the lower (outer) side of the guide plate 6. The discharged gas is gathered at the center of the guide plate through the V-shaped groove flow channel 603, and is ejected from the nozzle 602 through the guide plate center hole 601.

[0088] This utility model provides a square, high-flow, high-pressure electric pump with a Tesla valve at the inlet. Its working process and principle are as follows:

[0089] The outlet and inlet of the piezoelectric pump are set according to the standing wave principle. When the piezoelectric pump is working, it will generate two waves with the same frequency but opposite transmission direction. The outlet and inlet of the piezoelectric pump are node-type outlet and inlet. The inlet flow channel is equipped with a Tesla-type structure to reduce gas escape from the inlet and increase the flow rate and pressure during a single piezoelectric pump drive.

[0090] Both pump body I4 and pump body II2 of this utility model are square, and their air inlet Tesla flow channels and outlet flow channels are symmetrically arranged at 180°. Therefore, by rotating pump body I4, different series and parallel connection methods can be constructed between pump body I4 and pump body II2, as detailed below:

[0091] Parallel connection method I:

[0092] See appendix Figure 8 When pump body I4 and pump body II2 are opposite each other, and their air inlet Tesla flow channels are set at the same angle, that is, their first quadrant holes and third quadrant holes correspond to each other, they can form the first parallel connection method.

[0093] Gas enters the first quadrant holes of pump body I4 and pump body II2 simultaneously through the air guide hole of partition I; the chamber I408 of pump body I4 and the chamber II207 of pump body II2 are connected in parallel, separated by piezoelectric vibrator 5. Therefore, the up-and-down vibration of piezoelectric vibrator 5 makes the intake and exhaust of chamber I408 and chamber II207 asynchronous.

[0094] With attachment Figure 8 Taking the structure of each component as an example:

[0095] The piezoelectric vibrator 5 vibrates downwards, and the gas is pumped into chamber I408 through the first quadrant hole I401, the Tesla flow channel I410, and the inlet I406 of pump body I4; the gas in chamber II207 of pump body II2 is pumped out through outlet II206, check valve II8, outlet flow channel II210, and third quadrant hole II203.

[0096] The piezoelectric vibrator 5 vibrates upward, and the gas in chamber I408 of pump body I4 is pumped out through outlet I407, check valve I7, outlet flow channel I411, and third quadrant hole I403; the gas in pump body II2 is pumped into chamber II207 through first quadrant hole II201, inlet Tesla flow channel II209, and inlet II205.

[0097] The piezoelectric vibrator 5 reciprocates, and the gas will be continuously pumped out from the third quadrant hole I403 of the pump body I4 and the third quadrant hole II203 of the pump body II2. The gas passes through the air guide hole II302 of the partition plate II3 and reaches the tail end 604 of the V-shaped groove flow channel 603 on one side of the guide plate 6. Then, it converges at the center of the guide plate on one side of the V-shaped groove flow channel 603 and is ejected from the nozzle 602 through the center hole 601 of the guide plate.

[0098] Parallel connection method II:

[0099] See appendix Figure 9 Compared to the attached Figure 8 Rotate pump body I4 counterclockwise by 90° relative to pump body II2. The Tesla flow channels of their air inlets and outlets are set vertically, that is, the lines connecting the first and third quadrant holes of the two are spatially perpendicular, forming a second parallel connection method.

[0100] Gas enters the first quadrant holes of pump body I4 and pump body II2 simultaneously from the air guide holes on both sides of partition I; the up-and-down vibration of piezoelectric vibrator 5 makes the intake and exhaust of chamber I408 and chamber II207 asynchronous;

[0101] The piezoelectric vibrator 5 reciprocates, and the gas will be continuously pumped out from the third quadrant hole I403 of pump body I4 and the third quadrant hole II203 of pump body II2. The gas passes through the air guide hole II302 and air guide hole I301 of partition plate II3 to the flow channel tail end 604 on both sides of the V-shaped groove flow channel 603 of guide plate 6. Then, it converges on both sides of the V-shaped groove flow channel 603 to the center of the guide plate and is ejected from the nozzle 602 through the center hole 601 of the guide plate.

[0102] Series connection method:

[0103] See appendix Figure 10 Compared to the attached Figure 9 When pump body I4 is rotated 90° counterclockwise relative to pump body II2, and the Tesla flow channels of the air inlets of the two are set at two opposite angles of 180°, that is, the first quadrant holes and the third quadrant holes of the two are opposite to each other, they can form a series connection.

[0104] In this series connection method, an air-blocking plug 9 needs to be provided in the upper half of the third quadrant hole II203 of the pump body II2;

[0105] The gas first enters the first quadrant hole I401 of the pump body I4 through the air guide hole of the partition I, but does not enter the third quadrant hole II203 of the pump body II2; the piezoelectric vibrator 5 vibrates up and down, so that the intake and exhaust of the chamber I408 and the chamber II207 are asynchronous;

[0106] In the series connection method, the gas passes through pump body I4 and pump body II2 in sequence before being discharged, and cannot be discharged synchronously.

[0107] The piezoelectric vibrator 5 reciprocates, and the gas enters the first quadrant hole II201 of the pump body II2 through the third quadrant hole I403 of the pump body I4, and then is pumped out from the lower half of the third quadrant hole II203 of the pump body II2. The gas passes through the air guide hole II302 of the partition plate II3 and reaches the tail end 604 of the V-shaped groove flow channel 603 on one side of the guide plate 6. Then it converges at the center of the guide plate through the V-shaped groove flow channel 603 and is ejected from the nozzle 602 through the center hole 601 of the guide plate.

Claims

1. A square, high-flow, high-pressure electric pump with a Tesla valve at the inlet, characterized in that: Includes diaphragm I (1), pump body I (4), check valve I (7), piezoelectric vibrator (5), check valve II (8), pump body II (2), diaphragm II (3), and guide plate (6); The aforementioned baffle I (1), pump body I (4), pump body II (2), baffle II (3), and guide plate (6) are all square and fixedly connected from top to bottom; The partition I (1) and partition II (3) have the same structure, and air guide holes are provided on both sides of them; The pump body I (4) and pump body II (2) are provided with a first quadrant hole, a second quadrant hole, a third quadrant hole, a fourth quadrant hole, an air inlet, an air outlet, a chamber, an air inlet Tesla flow channel, and an air outlet flow channel; The first quadrant hole, second quadrant hole, third quadrant hole, and fourth quadrant hole are all through holes, and are symmetrically located at the four corners of the pump body. The first quadrant aperture, the air inlet Tesla flow channel, the air inlet, the air outlet, the air outlet flow channel, and the third quadrant aperture are arranged diagonally at 180°. Both the air inlet and the air outlet are through holes that connect to a circular chamber inward. The air inlet Tesla flow channel and the air outlet flow channel are located on the outside of the pump body and are both groove-shaped structures. The air outlet is located in the center of the chamber and is equipped with a one-way valve with the air outlet direction facing outward. Gas in pump body I (4) or pump body II (2) is pumped into the chamber through the first quadrant hole, the Tesla flow channel of the air inlet, and the air inlet, and then pumped out through the air outlet, the one-way valve, the air outlet flow channel, and the third quadrant hole; The air guide holes of the partition I (1) and partition II (3) are connected to the quadrant holes for air intake or exhaust of the pump body.

2. The square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet according to claim 1, characterized in that: The aforementioned air inlet Tesla flow channel is a symmetrical parallel Tesla valve structure, which has a unidirectional guiding effect on gas.

3. The square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet according to claim 2, characterized in that: The bottom surfaces of the chambers of pump body I (4) and pump body II (2) are both arc surfaces to reduce gas loss along the flow path.

4. The square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet according to claim 3, characterized in that: The piezoelectric vibrator (5) is composed of piezoelectric ceramic (501), FPC flexible circuit board (502) and metal matching layer (503) bonded together in sequence; a circular FPC flexible circuit board (502) is pressed between the side of the pump body II (2) chamber and the side of the pump body I (4) chamber; the lead wire of the FPC flexible circuit board (502) passes through the lead wire groove of the pump body.

5. The square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet according to claim 4, characterized in that: The one-way valve is composed of a metal valve plate assembly I, a metal valve plate assembly II, an elastic plastic valve plate assembly, and a metal valve plate assembly III connected in sequence; the metal valve plate assembly II has three cantilever beams evenly distributed at an included angle of 120°; both the metal valve plate assembly II and the metal valve plate assembly I have through holes in the middle, and the through holes on the metal valve plate assembly I are larger; Metal valve plate assembly I, elastic plastic valve plate assembly, and metal valve plate assembly III are all equipped with through holes of the same diameter at equal intervals. These through holes form three regions distributed along the circumference, each region being slightly smaller than the circumferential angle of 120°. These three valve plate assemblies constitute a staggered hole structure.

6. The square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet according to claim 5, characterized in that: The inner side of the guide plate (6) is provided with a V-shaped groove flow channel (603), and the two ends of the V-shaped groove flow channel (603) are referred to as the flow channel end (604), which are matched with the exhaust guide hole of the partition plate II (3); the top of the V-shaped groove flow channel (603) is located at the center of the guide plate (6), and a guide plate center hole (601) is provided, and a nozzle (602) is provided at the corresponding outer center. The exhaust gas is gathered at the center of the guide plate through the V-shaped groove channel (603) and ejected from the nozzle (602) through the center hole (601) of the guide plate.

7. The square high-flow-rate, high-pressure electric pump with a Tesla valve at the inlet according to claim 1, 2, 3, 4, 5, or 6, characterized in that: Parallel connection method I: Pump body I (4) and pump body II (2) are set opposite to each other. When the Tesla flow channels of their air inlets are set at the same corner, their first quadrant holes and third quadrant holes correspond to each other respectively. Gas enters the first quadrant holes of pump body I (4) and pump body II (2) simultaneously from the air guide hole of partition I. The reciprocating vibration of piezoelectric vibrator (5) causes the chambers of pump body I (4) and pump body II (2) to have asynchronous intake and exhaust. Gas is continuously pumped out from the third quadrant holes of pump body I (4) and pump body II (2), and converges at the center of the guide plate through the air guide hole of partition II (3) and the V-shaped groove flow channel (603) of the guide plate (6), and is ejected from the nozzle (602). Or parallel connection method II: the air inlet Tesla flow channel and outlet flow channel of pump body I (4) and pump body II (2) are set vertically, and the line connecting the first quadrant hole and the third quadrant hole of the two is perpendicular in space; Gas enters the first quadrant hole of pump body I (4) and pump body II (2) simultaneously from the air guide holes on both sides of partition I; piezoelectric vibrator (5) vibrates back and forth, and gas is continuously pumped out from the third quadrant hole of pump body I (4) and pump body II (2). The gas converges at the center of the guide plate through the air guide holes on both sides of partition II (3) and the two tail ends of the V-shaped groove flow channel (603) of the guide plate (6), and is ejected from the nozzle (602). Or in series connection: the air inlet Tesla flow channels of pump body I (4) and pump body II (2) are set 180° opposite each other, that is, the first quadrant holes and the third quadrant holes of the two are opposite to each other; An air-blocking plug (9) is provided in the upper half of the third quadrant hole of the pump body II (2); the gas enters the first quadrant hole of the pump body I (4) from the air guide hole of the partition I, and does not enter the third quadrant hole of the pump body II (2); The gas passes through pump body I (4) and pump body II (2) in sequence and is then discharged from the nozzle (602) of the guide plate (6).

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