CN115833647A

CN115833647A - Airing machine and piezoelectric fan thereof

Info

Publication number: CN115833647A
Application number: CN202211623218.3A
Authority: CN
Inventors: 王妙玉; 赖昶靖; 周亮; 杨思民; 赵志礼
Original assignee: Guangdong Hotata Technology Group Co Ltd
Current assignee: Guangdong Hotata Technology Group Co Ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-03-21

Abstract

The application provides a piezoelectricity fan and adopt airing machine of this kind of piezoelectricity fan, wherein, piezoelectricity fan includes: a cover body, a driving circuit and a vibration unit; the cover body is provided with an air inlet and an air outlet; the driving circuit is electrically connected with the vibration unit; the vibrating unit is installed in the cover body and comprises a vibrating piece and a piezoelectric piece which are fixedly connected, the piezoelectric piece can be driven by a power supply to vibrate the vibrating piece to form airflow, the airflow flows out of the cover body, the air inlet is formed in the rear side of the free end of the vibrating piece, and the air outlet is formed in the front side of the free end of the vibrating piece. Adopt this application piezoelectricity fan and airing machine do benefit to product miniaturization, low-power consumption and low noise.

Description

Airing machine and piezoelectric fan thereof

Technical Field

The application relates to the technical field of intelligent household equipment, in particular to a piezoelectric fan and a clothes airing machine.

Background

The electric clothes drying machine is an important member of intelligent household products, and is popularized to thousands of households. At present, various multifunctional clothes drying machines in the market generally comprise functions of ascending, descending, lighting, disinfecting, air drying, intelligent interconnection and the like, and the functions of products tend to be perfect. However, due to the characteristics of the installation and use mode of the clothes drying machine, each functional module has to be installed in the clothes drying machine main machine in a centralized manner, the more perfect the function is, the greater the requirement on the internal space of the main machine is, and the miniaturization and the attractiveness of the product are not facilitated; meanwhile, the superposition of a plurality of functional modules brings about larger power consumption.

Meanwhile, with the development of the electronic technology field, the piezoelectric fan is applied to a computer case as a low-power-consumption miniaturized heat dissipation product, the piezoelectric fan mainly comprises piezoelectric ceramics and a vibrating sheet, and when alternating voltage is input, the piezoelectric ceramics drives the vibrating sheet to generate resonance by utilizing the inverse piezoelectric effect, so that ambient air regularly flows, a convection effect is achieved, and heat dissipation is achieved for the computer case. How to perfectly combine the piezoelectric fan to the clothes airing machine product is beneficial to product miniaturization and low power consumption, and is a direction worthy of research in the industry.

Disclosure of Invention

The purpose of this application aims at providing a piezoelectric fan and use airing machine of this piezoelectric fan to solve above-mentioned at least one technical problem. The scheme provided by the embodiment of the application is as follows:

this application first aspect provides a piezoelectric fan, includes: a cover body, a driving circuit and a vibration unit; the cover body is provided with an air inlet and an air outlet; the driving circuit is electrically connected with the vibration unit; the vibrating unit is installed in the cover body and comprises a vibrating piece and a piezoelectric piece which are fixedly connected, the piezoelectric piece can be driven by a power supply to drive the vibrating piece to form airflow, the airflow flows out of the cover body, the air inlet is formed in the rear side of the free end of the vibrating piece, and the air outlet is formed in the front side of the free end of the vibrating piece.

Further, the cover body comprises a base and an upper cover which are buckled up and down, the base and the upper cover are buckled with each other to jointly enclose and form an accommodating cavity, and the vibration unit is arranged in the accommodating cavity.

Preferably, the piezoelectric sheet is a piezoelectric ceramic sheet.

Preferably, the vibrating plate is flatly arranged in the cover body and can vibrate up and down, and the air inlet is arranged on the bottom surface or the top surface of the cover body and is opposite to the surface of the vibrating plate.

Preferably, the piezoelectric sheets are clamped at two sides of the vibrating sheet in pairs and fixedly connected with each other; or the piezoelectric sheets are arranged on one side of the vibrating sheet and fixedly connected with each other.

Preferably, the piezoelectric sheet and the vibrating sheet are connected by glue.

Preferably, the number of the vibration units is two or more, and the two or more vibration units are annularly arranged or arranged in a row.

Further, the more than two vibration units are arranged at equal intervals.

Preferably, the air outlet is also provided with a heating device.

Another aspect of the present application provides a clothes drying machine, including any one of the above piezoelectric fans.

Preferably, the back of the base of the piezoelectric fan is provided with an installation column, and when the piezoelectric fan is installed on the installation plate of the clothes airing machine, the installation column enables a gap to be formed between the base and the installation plate.

Preferably, the number of the piezoelectric fans is two, and the two piezoelectric fans are symmetrically arranged at two ends of the clothes airing machine main machine.

Preferably, the airing machine main machine is provided with a swinging page corresponding to the air outlet.

Compared with the prior art, the scheme of the application has the following advantages:

(1) The piezoelectric fan is formed by adopting the cover body with the air inlet and the air outlet and matching the piezoelectric sheet and the vibrating sheet, so that the miniaturization, low power consumption and low noise of the fan are realized on the premise of meeting the air output, and the user experience is improved;

(2) The air inlet is opposite to the vibrating surface of the vibrating plate, and the air outlet is positioned at the front end of the free end of the vibrating plate, so that the maximum air flow can be driven, and the wind power can be enhanced;

(3) The plurality of vibration units are annularly arranged or arranged in rows, and are arranged at equal intervals, so that the wind power is enhanced;

(4) The air outlet is provided with a heating device to provide hot air, which is favorable for accelerating the drying speed of the dried object.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a piezoelectric blower according to an embodiment of the present application;

FIG. 2 is a schematic structural view of the piezoelectric fan of FIG. 1 from another perspective;

FIG. 3 is a schematic structural view of the piezoelectric fan of FIG. 1 from another perspective;

FIG. 4 is an exploded view of the piezoelectric fan of FIG. 1;

FIG. 5 is a schematic structural view of the piezoelectric fan of FIG. 1 from another perspective;

FIG. 6 isbase:Sub>A cross-sectional view of the piezoelectric fan of FIG. 5 taken along the direction A-A';

FIG. 7 is a schematic structural view of a vibration unit of the piezoelectric fan shown in FIG. 1;

FIG. 8 is a schematic structural diagram of another view of the vibration unit shown in FIG. 7;

fig. 9 is a schematic structural diagram of a vibration unit according to another embodiment of the present application;

fig. 10 is a schematic structural diagram of a vibration unit according to another embodiment of the present application.

The reference numbers illustrate:

100-piezoelectric fan, 1-cover body, 101-base, 102-upper cover, 11-air inlet, 12-air outlet, 13-mounting column, 2-driving circuit, 3-vibration unit, 31-vibration plate, 311-free end, 32-piezoelectric plate, 4' -mounting seat and 5-screw.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and are not construed as limiting the present application.

Referring to fig. 1 to 4, the present application provides a piezoelectric fan 100, including: a cover body 1, a driving circuit 2 and a vibration unit 3; the cover body 1 is provided with an air inlet 11 and an air outlet 12; the driving circuit 2 is arranged in the cover body 1 and is electrically connected with the vibration unit 3; the vibration unit 3 is also installed in the cover 1, and includes a vibration plate 31 and a piezoelectric plate 32, the vibration plate 31 is fixedly connected to the piezoelectric plate 32, the piezoelectric plate 32 can drive the vibration plate 31 to vibrate under the driving of a power supply to form an airflow, along the direction of the airflow flowing out of the cover 1, the air inlet 11 is installed at the rear side of the free end 311 of the vibration plate 31, and the air outlet 12 is installed at the front side of the free end 311 of the vibration plate 31. The driving circuit 2 may be a circuit board, or may be disposed outside the cover 1. The free end 311 is a distal end of the vibrating piece 31 with respect to a contact portion between the vibrating piece 31 and the piezoelectric piece 32, and is also an end of the vibrating piece 31 having the largest vibration amplitude.

Preferably, the air inlet 11 is disposed through the surface of the cover 1, the air inlet 11 is disposed on a vibration side of the vibration plate 31, the vibration side is two sides of the vibration direction, for example, when the vibration plate 31 vibrates up and down, the air inlet 11 is disposed on an upper side or a lower side of the vibration plate 31. Further, the air inlet 11 is disposed on the vibration side of the vibration plate 31, and should be disposed as close to the free end 311 as possible, so that the maximum vibration amplitude of the free end 311 is beneficial to increasing the air inlet amount. In this embodiment, the air inlet 11 is a strip-shaped through hole extending along the length direction of the vibration plate 31.

Preferably, the outlet 12 is disposed at a front side of the free end 311 of the vibration plate 31, and is spaced from the vibration plate 31 by a certain distance, so that the airflow has a sufficient flowing space, and an air duct (not numbered) is formed in the cover 1, and the air outlet direction can be adjusted by the arrangement of the extending direction of the air duct.

Although not shown, the piezoelectric blower 100 further includes a power line connected to the driving circuit 2, and the power line extends out of the casing and is connected to an external power source to supply power to the piezoelectric blower 100. Or, a power module is arranged in the piezoelectric fan 100, and the driving circuit is connected with the power module.

Referring to fig. 1 and 4, in the embodiment, the cover body 1 includes a base 101 and an upper cover 102 that are fastened together, the base 101 and the upper cover 102 are fastened together to form an accommodating cavity, and the driving circuit 2 and the vibration unit 3 are both disposed in the accommodating cavity. The air inlet 11 is arranged on the base 101, and the air outlet 12 is defined by the base 101 and the upper cover 102. The split structure of the cover body 1 is beneficial to assembly and maintenance.

Referring to fig. 4 and 7, the base 101 is further provided with an installation seat 4, an installation inclined surface is formed on one side of the installation seat 4, and the driving circuit 2 is installed on the installation inclined surface of the installation seat 4 through a screw 5. The vibration unit 3 is installed on one side, far away from the installation seat 4, of the driving circuit 2, the installation seat 4 is convenient for installation of the driving circuit 2 and the vibration unit 3, and a gap is formed between the vibration unit 3 and the base 101 to avoid vibration.

Preferably, the piezoelectric sheet 32 is a piezoelectric ceramic sheet, and in other embodiments, the piezoelectric sheet 32 may also be made of other materials having piezoelectric effect and may vibrate under the action of the power supply.

Referring to fig. 5 and fig. 6, in the present embodiment, the vibration plate 31 is flatly disposed in the cover 1 and can vibrate up and down, and the air inlet 11 is disposed on the bottom surface or the top surface of the cover 1 and faces the surface of the vibration plate 31. The tiling arrangement is not limited to the horizontal arrangement, and the vibrating reed 31 may form a certain angle with any surface of the base 102 or the upper cover 102 of the cover 1, but the tiling arrangement is favorable for reducing the thickness of the cover 1 relative to the vertical arrangement. The air inlet 11 is directly opposite to the surface of the vibrating reed 31 and is arranged at the rear side of the free end 311 of the vibrating reed 31, that is, the air inlet 11 does not exceed the projection range of the vibrating reed 31 on the cover 1, which is beneficial to adjusting the air flow into the cover 1 to the maximum extent.

Preferably, the piezoelectric sheets are sandwiched in pairs on both sides of the vibrating piece, not shown, and are fixedly connected to each other; in this embodiment, the piezoelectric sheet 32 is disposed on one side of the vibrating piece 31 and fixedly connected to each other.

Preferably, the piezoelectric plate 32 and the vibrating plate 31 are connected by glue, when the piezoelectric plate is clamped in pair at two sides of the vibrating plate and connected, the connecting glue is conductive glue, and the vibrating plate is a metal plate.

Referring to fig. 8 to 10, the number of the vibration units 3 is two or more, and the two or more vibration units 3 are annularly arranged or arranged in a row. Preferably, the two or more vibration units 3 are disposed at equal intervals. In fig. 8, a plurality of vibration units 3 are arranged in a row and fixed to a rectangular mounting slope of the mount 4. In fig. 9 and 10, the mounting seat 4' is annular, the plurality of vibration units 3 are arranged annularly, and the air outlet is correspondingly arranged at the center or the outer side of the ring. The regular arrangement of the plurality of vibration units 3 is beneficial to enhancing the wind power.

Preferably, the outlet 12 is further provided with a heating device, not shown. The heating device can be a PTC heating ceramic piece or a heating wire or other heating materials. The piezoelectric fan 100 can provide hot air, which is beneficial to accelerating the drying speed of the dried object.

Another aspect of the present application provides a clothes drying machine (not shown) comprising a piezoelectric blower 100 as described in any one of the above. Although not shown, the clothes drying machine includes a main body and an airing rod assembly. The airing rod assembly comprises a scissor rack, a steel wire rope and an airing rod. The main machine is internally provided with a piezoelectric fan 100, a power supply unit, a power system and other functional modules.

In a preferred embodiment, a mounting post 13 is provided on the back of the base 101 of the piezoelectric blower 100, and when the piezoelectric blower 100 is mounted on a mounting plate of a clothes drying machine, the mounting post 13 forms a gap between the base 101 and the mounting plate. Meanwhile, the air inlet 11 is formed in the base 101 to facilitate the entry of outside air.

Preferably, the number of the piezoelectric fans 100 is two, and the two piezoelectric fans 100 are symmetrically arranged at two ends of the main machine of the clothes airing machine. The piezoelectric fan 100 can also be one and is arranged in the middle of the main machine of the clothes airing machine.

Preferably, the airing machine main machine is provided with a swinging page corresponding to the air outlet 11. The air direction of the air outlet of the clothes airing machine can be adjusted, and the requirements of customers in different application scenes are met.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims

1. A piezoelectric fan, comprising:

a cover body, a driving circuit and a vibration unit;

the cover body is provided with an air inlet and an air outlet;

the driving circuit is electrically connected with the vibration unit;

the vibrating unit is installed in the cover body and comprises a vibrating piece and a piezoelectric piece which are fixedly connected, the piezoelectric piece can be driven by a power supply to vibrate the vibrating piece to form airflow, the airflow flows out of the cover body, the air inlet is formed in the rear side of the free end of the vibrating piece, and the air outlet is formed in the front side of the free end of the vibrating piece.

2. The piezoelectric fan according to claim 1, wherein the cover body includes a base (101) and an upper cover (102) that are fastened together, the base and the upper cover are fastened together to form a receiving cavity, and the vibration unit is disposed in the receiving cavity.

3. The piezoelectric blower according to claim 1, wherein the vibration plate is disposed in the housing in a flat manner and can vibrate up and down, and the air inlet is disposed on a bottom surface or a top surface of the housing and faces a surface of the vibration plate.

4. The piezoelectric fan according to claim 1, wherein said piezoelectric pieces are sandwiched in pairs on both sides of said vibration piece and fixedly connected to each other; or the piezoelectric sheets are arranged on one side of the vibrating sheet and fixedly connected with each other.

5. The piezoelectric fan according to claim 1, wherein the number of the vibration units is two or more, and the two or more vibration units are arranged in a ring or a row.

6. The piezoelectric fan of claim 1, wherein the air outlet is further provided with a heating device.

7. A clothes drying machine comprising a piezoelectric blower according to any one of claims 1 to 6.

8. The clothes drying machine according to claim 7, wherein a mounting post is provided on a back surface of the base of the piezoelectric blower, and when the piezoelectric blower is mounted on a mounting plate of the clothes drying machine, the mounting post forms a gap between the base and the mounting plate.

9. The airing machine according to claim 7, wherein the number of the piezoelectric fans is two, and the two piezoelectric fans are symmetrically arranged at two ends of the airing machine main body.

10. The airing machine according to any one of claims 7 to 9, wherein a swing page is arranged on the airing machine main body corresponding to the air outlet.