CN111779656A

CN111779656A - Double-pendulum piezoelectric fan

Info

Publication number: CN111779656A
Application number: CN202010554023.2A
Authority: CN
Inventors: 田晓超; 李庆华; 赵昌龙; 于淼; 贺春山; 赵剑; 李志瑶; 杨凤双; 闻人锴琦
Original assignee: Changchun University
Current assignee: Changchun University
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2020-10-16
Anticipated expiration: 2040-06-17
Also published as: CN111779656B

Abstract

The invention discloses a double-pendulum piezoelectric fan which comprises a base, wherein an outer sealing cover is sleeved at the top end of the base and is installed on the base through a plurality of third bolts; the whole device has no design of a resonance rod, simplifies the assembly difficulty, improves the output flow, and can greatly reduce the rigidity of the system by the horizontally arranged spring pieces; meanwhile, the whole device can work at a low frequency below 400HZ and also can work under a high-frequency working condition above 400HZ, more output flow can be provided by arranging the working chambers, the working efficiency of the device can be greatly improved, the whole device does not generate magnetic interference and does not accept the magnetic interference completely, and the device is more suitable for working in a complex environment compared with a traditional fan and is not easy to damage and easier to maintain.

Description

Double-pendulum piezoelectric fan

Technical Field

The invention relates to the technical field of piezoelectric fans, in particular to a double-pendulum piezoelectric fan.

Background

The air diaphragm pump is a new type of conveying machinery, adopts compressed air as power source, and can pump out and suck up various corrosive liquids, liquids with particles, high viscosity, easy volatilization, flammability and strong toxicity. The diaphragm pump is actually a plunger pump, and the plunger and the pump cylinder are protected by separating the infused liquid from the plunger and the pump cylinder through a film. The left side of the diaphragm, which is in contact with the liquid, is made of corrosion-resistant materials or coated with a layer of corrosion-resistant substances; the right side of the diaphragm is filled with water or oil. Diaphragm pumps, also known as control pumps, are the main type of actuator that is operated by power to vary the fluid flow by receiving a control signal from a regulating control unit. The diaphragm pump is used in the control process to receive the control signal of the regulator or the computer and change the flow rate of the regulated medium to maintain the regulated parameters in the required range, so as to realize the automation of the production process.

At present, the gas diaphragm pump mainly comprises an electromagnetic diaphragm pump and a piezoelectric diaphragm pump which are driven by a motor cam mechanism, wherein the piezoelectric pump has good output effect on pure water working media. The diaphragm type piezoelectric vibrator has limited deformability, has poor gas output effect and cannot work at high frequency, so that the double-pendulum piezoelectric fan provided by the invention can well solve the problems.

Disclosure of Invention

The invention aims to provide a double-pendulum piezoelectric fan to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a double-pendulum piezoelectric fan comprises a base, wherein the base is of a cuboid structure with an open top end, an outer sealing cover is sleeved at the top end of the base, the outer sealing cover is arranged on the base through a plurality of third bolts, the left side and the right side of the base are provided with piezoelectric vibrators, the piezoelectric vibrator is arranged on the base through a plurality of second bolts, the bottom wall of the inner cavity of the base is provided with a vibration mechanism, the piezoelectric vibrator is matched with the base, the vibration mechanism and the sealing cover to form a resonance system, when in work, alternating current is firstly introduced into the piezoelectric vibrator to enable the whole resonance system to be in a resonance state, vibration is directly transmitted to the base through the piezoelectric vibrator, and is transmitted to the vibration mechanism through the base, so that the metal film sheet in the vibration mechanism vibrates and deforms, the inner volume of the cavity of the base is changed, and the operation of the whole device is further realized.

In a further embodiment, vibrations mechanism includes the cavity, the cavity is the open cuboid structure in top, and the bottom fixedly connected with mounting panel of cavity is integrated into one piece preparation between cavity and the mounting panel and forms, the mounting panel is installed on the inner chamber diapire of base through first bolt, the top cover of cavity is equipped with interior sealed lid, interior sealed lid is installed on the cavity through a plurality of fourth bolts. The cavity is uniformly provided with a plurality of clapboards, the clapboards divide the inner cavity of the cavity into a plurality of working cavities, the left side and the right side of each working cavity are symmetrically communicated with air pipes, one-way valves are arranged in the air pipes, valve plates are arranged on the one-way valves, spring pieces are embedded in the working cavities and are connected with the left side end and the right side end of each working cavity in a penetrating way, each spring piece is made of elastic metal, a connecting rod is embedded on each spring piece, the front end and the rear end of each connecting rod are symmetrically provided with metal film pieces matched with the working cavities, each connecting rod is embedded on each spring piece and each metal film piece through nuts, the piezoelectric vibrators are matched with the bases to drive the cavities to vibrate, when the cavities vibrate, the connecting rods are driven to swing back and forth in the cavities, and then the spring pieces are matched to drive, the external air can flow in and out of the inner cavity of the cavity, so that the operation of the whole device is realized; the whole device has no resonance rod, so that the assembly difficulty is simplified, the output flow is improved, and the rigidity of the system can be greatly reduced by the horizontally arranged spring pieces; meanwhile, the whole device can work under the low-frequency working below the HZ and the high-frequency working condition above the HZ, can provide more output flow by arranging a plurality of working chambers, can greatly improve the working efficiency of the device, does not generate magnetic interference and does not accept the magnetic interference completely, is more suitable for working in a complex environment compared with the traditional fan, is not easy to damage and is easier to maintain.

Compared with the prior art, the invention has the beneficial effects that: the whole device has no design of a resonance rod, simplifies the assembly difficulty, improves the output flow, and can greatly reduce the rigidity of the system by the horizontally arranged spring pieces; meanwhile, the whole device can work at a low frequency below 400HZ and also can work under a high-frequency working condition above 400HZ, more output flow can be provided by arranging the working chambers, the working efficiency of the device can be greatly improved, the whole device does not generate magnetic interference and does not accept the magnetic interference completely, and the device is more suitable for working in a complex environment compared with a traditional fan and is not easy to damage and easier to maintain.

Drawings

FIG. 1 is a schematic structural diagram of a perspective view of a double pendulum piezoelectric fan;

FIG. 2 is a schematic structural diagram of a double pendulum piezoelectric fan;

FIG. 3 is a schematic structural diagram of a mass mechanism of a double pendulum piezoelectric fan;

fig. 4 is a schematic structural diagram of a check valve of a double pendulum piezoelectric fan.

In the figure: the vibration damping device comprises a piezoelectric vibrator 1, a vibration mechanism 2, a mounting plate 21, a base 3, a first bolt 4, a second bolt 5, an outer sealing cover 6, a third bolt 7, an inner sealing cover 201, a fourth bolt 202, a cavity 203, a valve plate 204, a one-way valve 205, a metal film 206, a nut 207, a connecting rod 208, a spring plate 209, an air pipe 210, a partition plate 211 and a working cavity 212.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-4, a double-pendulum piezoelectric fan includes a base 3, the base 3 is a rectangular parallelepiped structure with an open top end, an outer sealing cover 6 is sleeved on the top end of the base 3, the outer sealing cover 6 is mounted on the base 3 through a plurality of third bolts 7, piezoelectric vibrators 1 are disposed on the left and right sides of the base 3, the piezoelectric vibrators 1 are mounted on the base 3 through a plurality of second bolts 5, a vibration mechanism 2 is disposed on the bottom wall of an inner cavity of the base 3, a resonance system is formed by the piezoelectric vibrators 1, the base 3, the vibration mechanism 2 and the sealing cover 6, and when the double-pendulum piezoelectric fan works, an alternating current is firstly fed into the piezoelectric vibrators 1 to enable the whole resonance system to be in a resonance state, vibration is directly transmitted to the base 3 through the piezoelectric vibrators 1 and is transmitted to the vibration mechanism 2 through the base 3 to enable metal thin film pieces in the vibration mechanism 2 to vibrate, deformation, the internal volume of the cavity of the base 3 changes, and the operation of the whole device is realized.

Example 2

The difference from example 1 is: vibrations mechanism 2 includes cavity 203, cavity 203 is the open cuboid structure in top, and the bottom fixedly connected with mounting panel 21 of cavity 203 is integrated into one piece preparation between cavity 203 and the mounting panel 21 and forms, mounting panel 21 is installed on the inner chamber diapire of base 3 through first bolt 4, the top cover of cavity 203 is equipped with the inside seal lid 201, the inside seal lid 201 is installed on cavity 203 through a plurality of fourth bolts 202. The cavity 203 is uniformly provided with a plurality of clapboards 211, the inner cavity of the cavity 203 is divided into a plurality of working cavities 212 by the clapboards 211, the left side and the right side of each working cavity 212 are symmetrically connected with air pipes 210 in a penetrating way, one-way valves 205 are installed in the air pipes 210, valve plates 204 are installed on the one-way valves 205, spring pieces 209 are embedded in the working cavities 212, the spring pieces 209 are connected with the left side end and the right side end of each working cavity 212 in a penetrating way, the spring pieces 209 are made of elastic metal, connecting rods 208 are embedded on the spring pieces 209, metal thin film pieces 206 matched with the working cavities 212 are symmetrically arranged at the front end and the rear end of each connecting rod 208, the connecting rods 208 are embedded on the spring pieces 209 and the metal thin film pieces 206 through nuts 207, the piezoelectric vibrators 1 are matched with the base 3 to drive the cavity 203 to vibrate, the cavity 203 drives the connecting rods 208, the deformation is generated, so that the volume of the inner cavity of the cavity 203 is changed, and meanwhile, the air pipe 210 and the one-way valve 205 are matched, so that the inflow and the outflow of external air in the inner cavity of the cavity 203 can be realized, and the running work of the whole device is further realized; the whole device has no resonance rod, so that the assembly difficulty is simplified, the output flow is improved, and the rigidity of the system can be greatly reduced by the horizontally arranged spring pieces; meanwhile, the whole device can work at a low frequency below 400HZ and also can work under a high-frequency working condition above 400HZ, more output flow can be provided by arranging the working cavities 212, the working efficiency of the device can be greatly improved, the whole device does not generate magnetic interference and does not accept the magnetic interference completely, and the device is more suitable for working in a complex environment compared with a traditional fan, is not easy to damage and is easier to maintain.

Working principle of examples 1-2: the piezoelectric vibrator 1 is matched with the base 3 to drive the cavity 203 to vibrate, when the cavity 203 vibrates, the connecting rod 208 is driven to swing back and forth in the cavity 203, and then the spring piece 209 is matched to drive the metal thin film piece 206 to vibrate and deform, so that the volume of the inner cavity of the cavity 203 is changed, and meanwhile, the air pipe 210 and the one-way valve 205 are matched to realize the inflow and outflow of external air in the inner cavity of the cavity 203, so that the running work of the whole device is realized; the whole device has no resonance rod, so that the assembly difficulty is simplified, the output flow is improved, and the rigidity of the system can be greatly reduced by the horizontally arranged spring pieces; meanwhile, the whole device can work at a low frequency below 400HZ and also can work under a high-frequency working condition above 400HZ, more output flow can be provided by arranging the working cavities 212, the working efficiency of the device can be greatly improved, the whole device does not generate magnetic interference and does not accept the magnetic interference completely, and the device is more suitable for working in a complex environment compared with a traditional fan, is not easy to damage and is easier to maintain.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a double pendulum formula piezoelectric fan, includes base (3), its characterized in that, the top cover of base (3) is equipped with outer sealing cover (6), outer sealing cover (6) are installed on base (3) through a plurality of third bolt (7), the left and right sides of base (3) is equipped with piezoelectric vibrator (1), piezoelectric vibrator (1) is installed on base (3) through a plurality of second bolt (5), the inner chamber diapire of base (3) is equipped with vibration mechanism (2).

2. The double pendulum piezoelectric fan according to claim 1, wherein the base (3) is a rectangular parallelepiped structure with an open top end.

3. The double-pendulum piezoelectric fan according to claim 2, wherein the vibration mechanism (2) comprises a cavity (203), a mounting plate (21) is fixedly connected to the bottom end of the cavity (203), an inner sealing cover (201) is sleeved on the top end of the cavity (203), the inner sealing cover (201) is mounted on the cavity (203) through a plurality of fourth bolts (202), a plurality of partition plates (211) are uniformly arranged in the cavity (203), the partition plates (211) divide the inner cavity of the cavity (203) into a plurality of working chambers (212), air pipes (210) are symmetrically connected through the left side and the right side of the working chambers (212), check valves (205) are mounted in the air pipes (210), spring pieces (209) are embedded in the working chambers (212), the spring pieces (209) are connected through the left side end and the right side end of the working chambers (212), and connecting rods (208) are embedded in the spring pieces (209), the front end and the rear end of the connecting rod (208) are symmetrically provided with metal thin film sheets (206) matched with the working cavity (212), and the connecting rod (208) is embedded on the spring piece (209) and the metal thin film sheets (206) through nuts (207).

4. The double pendulum piezoelectric fan of claim 3, wherein the cavity (203) is a rectangular parallelepiped structure with an open top.

5. The double-pendulum piezoelectric fan of claim 4, wherein the cavity (203) and the mounting plate (21) are integrally formed.

6. The double-pendulum piezoelectric fan according to claim 5, wherein the mounting plate (21) is mounted on the bottom wall of the inner cavity of the base (3) by a first bolt (4).

7. The double-pendulum piezoelectric fan of claim 1, wherein the check valve (205) has a valve plate (204) mounted thereon.

8. The double-pendulum piezoelectric fan of claim 3, wherein the spring plate (209) is made of an elastic metal.