CN214483268U

CN214483268U - Ultrasonic atomization sheet for electronic cigarette and electronic cigarette

Info

Publication number: CN214483268U
Application number: CN202022965145.9U
Authority: CN
Inventors: 钟术光
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-12
Filing date: 2020-12-12
Publication date: 2021-10-26
Anticipated expiration: 2030-12-12

Abstract

The invention relates to an ultrasonic atomization sheet for an electronic cigarette and the electronic cigarette, wherein the ultrasonic atomization sheet comprises a basically square and basically flat piezoelectric ceramic sheet, the piezoelectric ceramic sheet is provided with opposite electrodes so as to form a piezoelectric active area between the piezoelectric active area and the piezoelectric ceramic sheet, the ultrasonic atomization sheet is characterized in that the width of the piezoelectric active area of the piezoelectric ceramic sheet is 2mm to 12mm, the length of the piezoelectric active area of the piezoelectric ceramic sheet is 4mm to 35mm, the thickness of the piezoelectric ceramic sheet is not more than 0.6mm, the inherent or resonant frequency of the piezoelectric ceramic sheet is 35kHz to 250kHz, the length of the ultrasonic atomization sheet is not more than 60mm, the width of the ultrasonic atomization sheet is not more than 20mm, the thickness of the ultrasonic atomization sheet is not more than 1.5mm, and the rated power or the driving power of the ultrasonic atomization sheet is not more than 8W. The electronic cigarette has the advantages of greatly reduced occupied space, extremely low power consumption and better atomization performance, and is particularly suitable for electronic cigarettes.

Description

Ultrasonic atomization sheet for electronic cigarette and electronic cigarette

[ technical field ] A method for producing a semiconductor device

The invention relates to a micro ultrasonic atomization sheet. In particular to an ultrasonic atomization sheet for the miniaturization of an electronic cigarette device.

[ background of the invention ]

In daily life, electrical appliances are increasingly miniaturized, in particular to electronic cigarette devices, so that the electronic cigarette device is carried and/or used. The miniaturization of the ultrasonic atomization sheet is one of the prerequisites for the miniaturization of the ultrasonic electronic cigarette device. Another precondition for miniaturization of the electronic cigarette device is low power consumption, since the miniaturization of the electronic cigarette device will limit the size of the battery, the battery is also miniaturized, and the miniaturized battery has low electric quantity, so the ultrasonic atomization sheet has to have low power consumption

In other words, a miniaturized ultrasonic atomizing sheet with low power consumption is needed to meet the requirement of miniaturization of the electronic cigarette device.

[ summary of the invention ]

The invention aims to provide an ultrasonic atomization sheet for an electronic cigarette, which has the advantages of greatly reduced occupied space, extremely low power consumption and better atomization performance.

The invention relates to an ultrasonic atomization sheet for an electronic cigarette, which is characterized by comprising a basically square and flat piezoelectric ceramic sheet, wherein the piezoelectric ceramic sheet is provided with opposite electrodes so as to form a piezoelectric active area between the piezoelectric ceramic sheet and the piezoelectric active area, the width of the piezoelectric active area of the piezoelectric ceramic sheet is 2mm to 12mm, the length of the piezoelectric active area of the piezoelectric ceramic sheet is 4mm to 35mm, the thickness of the piezoelectric ceramic sheet is not more than 0.5mm or 0.6mm, the inherent or resonant frequency of the piezoelectric ceramic sheet is 35kHz to 250kHz, the length of the ultrasonic atomization sheet is not more than 50mm or 60mm, the width of the ultrasonic atomization sheet is not more than 20mm or 25mm, the thickness of the ultrasonic atomization sheet is not more than 1mm or 1.5mm, and the rated power or the driving power of the ultrasonic atomization sheet is not more than 6W or 8W.

Drawings

Fig. 1 is a schematic structural diagram of the micro ultrasonic atomization sheet of examples 1, 2 and 4.

FIG. 2 is a schematic structural view of a micro ultrasonic atomization plate of example 3.

FIG. 3 is a schematic structural view of a micro ultrasonic atomization plate of example 5.

FIG. 4 is a schematic structural view of a micro ultrasonic atomization plate of comparative example 5.

Detailed Description

Preferably, the width of the piezoelectric active area of the piezoelectric ceramic plate is 2mm to 10mm, more preferably 3mm to 8mm, and most preferably 3mm to 6 mm; the piezoelectric active area of the piezoelectric ceramic plate is 7mm to 25mm, preferably 10mm to 20mm, and most preferably 10mm to 15 mm.

Preferably, the natural or resonant frequency of the piezoceramic wafer is between 40kHz and 160kHz, more preferably between 60kHz and 140kHz, even more preferably between 70kHz and 120kHz, even more preferably between 80kHz and 120kHz, and most preferably between 90kHz and 120 kHz.

Preferably, the width of the piezoelectric active area of the piezoelectric ceramic plate is 2mm to 10mm, the length of the piezoelectric active area of the piezoelectric ceramic plate is 7mm to 25mm, and the frequency is 60kHz to 160 kHz.

More preferably, the width of the piezoelectric active area of the piezoelectric ceramic plate is 3mm to 8mm, the length of the piezoelectric active area of the piezoelectric ceramic plate is 10mm to 20mm, and the frequency is 70kHz to 140 kHz.

Most preferably, the piezoelectric active area of the piezoelectric ceramic sheet has a width of 3mm to 6mm, the piezoelectric active area of the piezoelectric ceramic sheet has a length of 10mm to 15mm, and the frequency is 80kHz to 120 kHz.

The ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active region of the piezoelectric ceramic plate or/and the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active region of the piezoelectric ceramic plate are usually 1 to 2.5, preferably 1 to 2, more preferably 1 to 1.5, and most preferably 1 to 1.2.

At the above frequencies, the width and length of the piezoelectric active region of the piezoelectric ceramic plate are sequentially most suitable for the miniaturization requirement of the width or diameter of the electronic cigarette (the overall width or diameter of the electronic cigarette is not more than 13mm, and at most not more than 15mm), and the length of the piezoelectric active region of the piezoelectric ceramic plate is also sequentially greatly reduced, so that the reduction of the size of the piezoelectric ceramic plate and the ultrasonic atomization plate is facilitated, and the reduction of the size, particularly the reduction of the length, is beneficial to the enlargement or extension of a battery, so that the endurance time is prolonged.

This is because the natural or resonant frequency of the PZT-5 ceramic wafer is mainly determined by the area factor of the piezoelectric active region, the width and length of the piezoelectric active region of the piezoelectric ceramic wafer determine the area, the width and length of the piezoelectric active region of the piezoelectric ceramic wafer are the most important factors for determining the natural or resonant frequency of the PZT-5 ceramic wafer, and the width and length of the piezoelectric active region of the piezoelectric ceramic wafer directly affect the miniaturization of the electronic cigarette. Therefore, the natural or resonant frequency of the PZT-5 electronic ceramic sheet greatly affects the miniaturization of the electronic cigarette.

Preferably, the thickness of the electric ceramic plate is not more than 0.4mm, more preferably not more than 0.3mm, and most preferably not more than 0.2 mm.

Preferably, a ratio of a width of the ultrasonic atomization sheet to a width of the piezoelectric ceramic sheet is 1 to 1.5, a ratio of a length of the ultrasonic atomization sheet to a length of the piezoelectric ceramic sheet is 1 to 3, and more preferably, a ratio of the width of the ultrasonic atomization sheet to the width of the piezoelectric ceramic sheet is 1.05 to 1.3, and a ratio of the length of the ultrasonic atomization sheet to the length of the piezoelectric ceramic sheet is 1.3 to 2 (a ratio of the length of the ultrasonic atomization sheet to the width of the ultrasonic atomization sheet is not less than 1).

Preferably, the rated power or driving power is not more than 5W, more preferably not more than 3W, and most preferably not more than 2W.

Preferably, the total thickness of the ultrasonic atomization sheet is not more than 0.75mm, more preferably not more than 0.5mm, still more preferably not more than 0.3mm, and most preferably not more than 0.2 mm.

Preferably, the total thickness of the elastic bonding body or the electrode in the ultrasonic atomization sheet is not more than 0.1mm, more preferably not more than 0.05mm, still more preferably not more than 0.03mm, and most preferably not more than 0.02 mm.

The piezoelectric ceramic is PZT (lead zirconate titanate) -5 or other piezoelectric ceramics. The working voltage is 3-36V, preferably 3-12V.

The wire welding point of the ultrasonic atomization sheet is a waterproof welding point.

Preferably, the ultrasonic atomization plate further includes a vibration plate (e.g., a metal plate or/and a plastic plate, and a composite plate thereof), and the piezoelectric ceramic plate is 2 plates, and is substantially symmetrically fixed (disposed) on both sides of the vibration plate (e.g., the metal plate), respectively, and the vibration plate (e.g., the metal plate) completely covers one side surface of the piezoelectric ceramic plate. Preferably, the vibrating plate (e.g., a metal plate) is substantially rectangular, the vibrating plate (e.g., a metal plate) is longer than the piezoelectric ceramic plate, and a part or the whole of a region of the vibrating plate (e.g., a metal plate) not covering the piezoelectric ceramic plate serves as a fixing region of the ultrasonic atomization plate.

Preferably, the thickness of the vibrating plate (e.g., metal plate) is not more than 0.3mm, more preferably not more than 0.2mm, still more preferably not more than 0.1mm, and most preferably not more than 0.05 mm.

Preferably, the metal is stainless steel, titanium alloy, cobalt alloy, nickel alloy, especially medical grade, because of its higher safety. Such as 316 or 316L (18-10), 304(18-8), 430(18-0), and especially 316 or 316L (18-10) (which is more safe, corrosion-free, and rust-free than 304(18-8), 430 (18-0)).

Has the advantages that:

the inherent or resonant frequency of the piezoelectric ceramic plate (PZT-5) in the invention is controlled in a certain relatively small range (such as 37.5-250khz), the size of the piezoelectric active area of the piezoelectric ceramic plate can be controlled in a small range (such as 2-12mm wide and 4-35mm long), thereby being beneficial to controlling the size of the ultrasonic atomization plate in a small range (such as the maximum width is not more than 15mm and the maximum length is not more than 50mm) and keeping sufficient atomization performance, being beneficial to reducing power consumption and reducing rated power or driving power of the ultrasonic atomization plate, and laying a good foundation for the miniaturization of electronic cigarettes.

The rated power or the driving power of the ultrasonic atomization sheet is controlled within a small range (such as 1-8W), so that the power consumption of the ultrasonic atomization sheet is greatly reduced, the electric capacity of a battery needing to be matched can be greatly reduced, the volume of the battery needing to be matched is greatly reduced, and a good foundation is laid for the miniaturization of an electronic cigarette; in addition, the low power is also beneficial to the long-time endurance of the electronic cigarette; moreover, the ultrasonic atomization sheet has low rated power or low driving power, so that the size of the ultrasonic atomization sheet is controlled in a smaller range, a good foundation is laid for the miniaturization of the electronic cigarette, and the mass of the ultrasonic atomization sheet is increased due to the increase of the size of the ultrasonic atomization sheet, so that the rated power or the driving power of the ultrasonic atomization sheet is increased.

In addition, the size of the ultrasonic atomization sheet is controlled in a small range (for example, the length of the ultrasonic atomization sheet is not more than 60mm, the width of the ultrasonic atomization sheet is not more than 20mm, the thickness of the ultrasonic atomization sheet is not more than 1.5mm, and the ratio of the width of the ultrasonic atomization sheet to the width of the piezoelectric ceramic sheet is 1-1.5), so that a good foundation is laid for the miniaturization of the electronic cigarette, and the quality of the ultrasonic atomization sheet is reduced, so that the rated power or the driving power of the electronic cigarette is reduced.

The preferable technical scheme is as follows:

1. the ultrasonic atomization sheet is characterized by comprising a basically square and basically flat piezoelectric ceramic sheet, wherein the piezoelectric ceramic sheet is provided with opposite electrodes so as to form a piezoelectric active area between the piezoelectric active area and the piezoelectric ceramic sheet, the width of the piezoelectric active area of the piezoelectric ceramic sheet is 2mm to 12mm, the length of the piezoelectric active area of the piezoelectric ceramic sheet is 4mm to 35mm, the thickness of the piezoelectric ceramic sheet is not more than 0.6mm, the inherent or resonant frequency of the piezoelectric ceramic sheet is 35kHz-250kHz, the length of the ultrasonic atomization sheet is not more than 60mm, the width of the ultrasonic atomization sheet is not more than 20mm, the thickness of the ultrasonic atomization sheet is not more than 1.5mm, and the rated power or the driving power of the ultrasonic atomization sheet is not more than 8W.

2. The ultrasonic atomization sheet according to the technical scheme 1 is characterized in that the width of a piezoelectric active area of the piezoelectric ceramic sheet is 2mm to 10mm, the length of the piezoelectric active area of the piezoelectric ceramic sheet is 7mm to 25mm, the frequency is 60kHz-180kHz, the length of the ultrasonic atomization sheet is not more than 50mm, the width of the ultrasonic atomization sheet is not more than 15mm, the thickness of the ultrasonic atomization sheet is not more than 1mm, and the power is not more than 6W.

3. The ultrasonic atomization sheet according to the technical scheme 2 is characterized in that the width of a piezoelectric active area of the piezoelectric ceramic sheet is 3mm to 8mm, the length of the piezoelectric active area of the piezoelectric ceramic sheet is 10mm to 20mm, the frequency is 70kHz to 150kHz, the length of the ultrasonic atomization sheet is not more than 45mm, the width of the ultrasonic atomization sheet is not more than 15mm, the thickness of the ultrasonic atomization sheet is not more than 1mm, and the power is not more than 6W.

4. The ultrasonic atomization sheet according to the technical scheme 2 is characterized in that the width of a piezoelectric active area of the piezoelectric ceramic sheet is 3mm to 6mm, the length of the piezoelectric active area of the piezoelectric ceramic sheet is 10mm to 15mm, the frequency is 80kHz to 120kHz, the length of the ultrasonic atomization sheet is not more than 40mm, the width of the ultrasonic atomization sheet is not more than 12mm, the thickness of the ultrasonic atomization sheet is not more than 0.75mm, and the power is not more than 4W.

5. The ultrasonic atomization sheet according to claim 1, wherein the ratio of the width of the ultrasonic atomization sheet to the width of the piezoelectric ceramic sheet is 1 to 1.5, and the ratio of the length of the ultrasonic atomization sheet to the length of the piezoelectric ceramic sheet is 1 to 3.

6. The ultrasonic atomization sheet according to claim 1, wherein the ratio of the width of the ultrasonic atomization sheet to the width of the piezoelectric ceramic sheet is 1.05 to 1.3, and the ratio of the length of the ultrasonic atomization sheet to the length of the piezoelectric ceramic sheet is 1.3 to 2.

7. The ultrasonic atomization plate according to technical schemes 1 to 4 is characterized in that the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate or/and the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate are 1-2.0.

8. The ultrasonic atomization plate according to technical schemes 1 to 4 is characterized in that the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate or/and the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate are 1-1.5.

9. The ultrasonic atomization sheet according to technical aspects 1 to 4, characterized in that the thickness of the electric ceramic sheet is not more than 0.4 mm.

10. The ultrasonic atomization sheet according to technical aspects 1 to 4, characterized in that the thickness of the electric ceramic sheet is not more than 0.3 mm.

11. The ultrasonic atomization sheet according to technical aspects 1 to 4, characterized in that the thickness of the electric ceramic sheet is not more than 0.2 mm.

12. The ultrasonic atomizing sheet according to claims 1 to 4, characterized in that the rated power or the driving power is not more than 3W.

13. The ultrasonic atomization sheet according to claims 1 to 4, characterized in that the total thickness of the elastic bonding body or the electrode in the ultrasonic atomization sheet does not exceed 0.1 mm.

14. The ultrasonic atomization sheet according to claims 1 to 4, characterized in that the ultrasonic atomization sheet further includes a vibration plate.

15. The ultrasonic atomizing sheet according to claim 14, wherein said vibrating plate is selected from the group consisting of a metal plate and/or a plastic plate, and a composite plate thereof.

16. The ultrasonic atomization plate according to claim 14, wherein the piezoelectric ceramic plates are 2 pieces, and are respectively fixed on both sides of the vibration plate substantially symmetrically.

17. The ultrasonic atomizing plate according to claim 14, wherein said vibration plate completely covers one side surface of said piezoelectric ceramic plate.

18. The ultrasonic atomization plate according to claim 14, wherein the vibration plate is substantially rectangular, the vibration plate is longer than the piezoelectric ceramic plate, and a part or all of a region of the vibration plate not covering the piezoelectric ceramic plate serves as a fixing region of the ultrasonic atomization plate.

19. The ultrasonic atomizing sheet according to claims 1 to 4, characterized in that the thickness of the vibrating plate is not more than 0.3 mm.

20. The ultrasonic atomizing sheet according to claims 1 to 4, characterized in that the thickness of the vibrating plate is not more than 0.2 mm.

21. The ultrasonic atomizing sheet according to claims 1 to 4, characterized in that the thickness of the vibrating plate is not more than 0.1 mm.

22. The ultrasonic atomizing sheet according to claims 1 to 4, characterized in that the thickness of the vibrating plate is not more than 0.05 mm.

23. The ultrasonic atomization sheet according to claim 15, wherein the metal is selected from stainless steel, titanium, a titanium alloy, a cobalt alloy, and a nickel alloy.

24. The ultrasonic atomization sheet according to claim 15, wherein the metal is selected from 316 or 316L stainless steel, 304 stainless steel, 430 stainless steel.

25. The ultrasonic atomization sheet according to claim 15, wherein the metal is selected from 316 or 316L stainless steel.

26. The ultrasonic atomization sheet according to claim 15, wherein the metal is medical grade.

27. The ultrasonic atomization sheet according to the technical scheme 1 is characterized in that the working voltage of the ultrasonic atomization sheet is 3-36V.

28. The ultrasonic atomization sheet according to claim 1, wherein the piezoelectric ceramic is PZT-5.

29. An electronic cigarette, characterized by comprising the ultrasonic atomization sheet according to claims 1 to 28.

The following examples are given as examples to illustrate the present invention in more detail.

Example 1

As shown in fig. 1, the ultrasonic atomization sheet has a vibrating plate 2 (which is a metal sheet or a hard plastic plate) with a width of about 5mm, a length of about 35mm and a thickness of about 0.1 mm; the width of a piezoelectric active area of the piezoelectric ceramic plate 1(PZT-5) is about 4mm, the length of the piezoelectric active area is about 24mm, the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate is about 1.2, the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate is about 1.1, the thickness of the piezoelectric ceramic plate is about 0.05mm, and no through hole exists; the piezoelectric ceramic pieces 1 are symmetrically arranged on two sides of the vibrating piece 2;

wherein the total thickness of the elastic bonding body (bonding vibrating sheet) and the electrode is about 0.05mm and 0.05mm respectively, and the total thickness of the ultrasonic atomization sheet is about 0.2 mm;

11 is an electrode lead; one end of the vibrating piece 2, which is not covered by the piezoelectric ceramic piece, is a fixed end;

the inherent or resonant frequency of the piezoelectric ceramic plate is about 70-90kHz, the working voltage is 3-12V, and the rated power or driving power is about 1-4W.

Example 2

As shown in fig. 1, the ultrasonic atomizing sheet has a vibrating plate 2 (which is a metal sheet or a hard plastic plate) with a width of about 15mm, a length of about 45mm and a thickness of about 0.05 mm; the width of a piezoelectric active area of the piezoelectric ceramic plate 1(PZT-5) is about 10mm, the length of the piezoelectric active area is about 30mm, the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate is about 1.2, the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate is about 1.2, the thickness of the piezoelectric ceramic plate is about 0.02mm, and no through hole exists; the piezoelectric ceramic pieces 1 are symmetrically arranged on two sides of the vibrating piece 2;

wherein the total thickness of the elastic bonding body (bonding vibrating sheet) and the electrode is about 0.01mm and 0.01mm respectively, and the total thickness of the ultrasonic atomization sheet is about 0.1 mm;

the inherent or resonant frequency of the piezoelectric ceramic plate is about 38-45kHz, the working voltage is 3-12V, and the rated power or driving power is about 3-5W.

Example 3

As shown in fig. 2, the ultrasonic atomization sheet has a vibrating piece 2 (which is a metal sheet or a hard plastic plate) with a width of about 6mm, a length of about 15mm and a thickness of about 0.2 mm; the width of a piezoelectric active area of the piezoelectric ceramic plate 1(PZT-5) is about 2mm, the length of the piezoelectric active area is about 5mm, the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate is about 2, the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate is about 2, the thickness of the piezoelectric ceramic plate is about 0.4mm, and no through hole exists; the piezoelectric ceramic piece 1 is fixedly arranged on one side of the vibrating piece 2;

wherein the total thickness of the elastic bonding body (bonding vibrating sheet) and the electrode is about 0.05mm and 0.05mm respectively, and the total thickness of the ultrasonic atomization sheet is about 0.6 mm;

12 is a surface electrode; 4 is an electrode lead; one end of the vibrating piece 2, which is not covered by the piezoelectric ceramic piece, is a fixed end;

the inherent or resonant frequency of the piezoelectric ceramic plate is about 140-170kHz, the working voltage is 3-12V, and the rated power or driving power is about 3-5W.

Example 4

As shown in fig. 1, the ultrasonic atomizing sheet has a vibrating plate 2 (which is a metal sheet or a hard plastic plate) with a width of about 6mm, a length of about 30mm and a thickness of about 0.1 mm; the width of a piezoelectric active area of the piezoelectric ceramic plate 1(PZT-5) is about 4mm, the length of the piezoelectric active area is about 12mm, the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate is about 1.05, the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate is about 1.05, the thickness of the piezoelectric ceramic plate is about 0.3mm, and no through hole is formed; the piezoelectric ceramic plates 1 are symmetrically and fixedly arranged on two sides of the vibrating plate 2;

wherein the total thickness of the elastic bonding body (bonding vibrating sheet) and the electrode is about 0.1mm and 0.1mm respectively, and the total thickness of the ultrasonic atomization sheet is about 0.9 mm;

the inherent or resonant frequency of the piezoelectric ceramic plate is about 110-130kHz, the working voltage is 3-12V, and the rated power or driving power is about 4-6W.

Example 5

As shown in fig. 3, the ultrasonic atomizing sheet has a vibrating plate 2 (which is a metal sheet or a rigid plastic plate) with a width of about 12mm, a length of about 38mm and a thickness of about 0.1 mm; the width of the piezoelectric active area of the piezoelectric ceramic plate 1(PZT-5) is about 11mm, the length of the piezoelectric active area is about 33.3mm, the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate is about 1.03, the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate is about 1.03, the thickness of the piezoelectric ceramic plate is about 0.03mm, and no through hole exists; the piezoelectric ceramic piece 1 is fixedly arranged on one side of the vibrating piece 2;

wherein the total thickness of the elastic bonding body (bonding vibrating sheet) and the electrode is about 0.01mm and 0.01mm respectively, and the total thickness of the ultrasonic atomization sheet is about 0.15 mm;

the inherent or resonant frequency of the piezoelectric ceramic plate is about 37.5kHz, the working voltage is 3-12V, and the rated power or driving power is about 1-3W.

Example 6

As shown in the ultrasonic atomizing sheet of FIG. 1, the width of the piezoelectrically active region of the piezoelectric ceramic sheet 1(PZT-5) is about 2mm, and the length of the piezoelectrically active region is about 4mm, and others are the same as those of example 4.

The inherent or resonant frequency of the piezoelectric ceramic plate is about 220-250kHz, the working voltage is 3-12V, and the rated power or driving power is about 0.5-3W.

Example 7

As shown in the ultrasonic atomizing plate of FIG. 1, the width of the piezoelectrically active region of the piezoelectric ceramic plate 1(PZT-5) is about 3mm, and the length of the piezoelectrically active region is about 20mm, and others are the same as those of example 4.

The inherent or resonant frequency of the piezoelectric ceramic plate is about 90-110kHz, the working voltage is 3-12V, and the rated power or driving power is about 0.5-3W.

Comparative examples 1 to 4

The piezoelectric ceramic sheet 1 in examples 1-4 was changed from PZT-5 to PZT-4, and the other steps were the same as in the corresponding examples.

Comparative example 5

As shown in fig. 4, the ultrasonic atomizing sheet has a vibrating plate 2 (which is a metal sheet or a rigid plastic plate) with a width of about 19.3mm, a length of about 59.3mm and a thickness of about 0.1 mm; the width of the piezoelectric active area of the piezoelectric ceramic plate 1(PZT-5) is about 18mm, the length of the piezoelectric active area is about 57.2mm, the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate is about 1.03, the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate is about 1.03, the thickness of the piezoelectric ceramic plate is about 0.03mm, and no through hole exists; the piezoelectric ceramic piece 1 is fixedly arranged on one side of the vibrating piece 2;

the inherent or resonant frequency of the piezoelectric ceramic plate is about 24kHz, the working voltage is 3-12V, and the rated power or driving power is about 5-9W.

Test example 1 atomization Performance test

The samples of the examples or the comparative examples were adhered with porous bodies (thickness 1mm) having the same pore diameter and a porosity of less than 5 μm and about 50%, respectively, which were communicated with the reservoir through a conduit (not shown in the figure), and connected to the same ultrasonic drive circuit board having the functions of automatic frequency tracking and automatic adjustment of optimum frequency, respectively, and the power supply was turned on to operate the ultrasonic atomization sheet, and the time T1 required for continuously atomizing 5ml of mineral water (the same bottle of natural mineral water from the spring of farmer spring) was measured, the shorter the time was, the better the atomization performance was. The test results are shown in Table 1.

Test example 2 Power consumption test

The samples of the examples or the comparative examples were each bonded on the surface with a porous body (thickness 1mm) having a porosity of less than 5 μm and about 50%, the porous body being communicated with a reservoir through a conduit (not shown) and being connected to the same ultrasonic drive circuit board having the functions of automatic frequency tracking and automatic optimum frequency adjustment, wherein the charging batteries have substantially the same capacitance (difference is less than 0.5%), the power supply is activated to operate the ultrasonic atomizing sheet, the operation is continued until the battery capacitance is exhausted, and the measurement duration T2 is longer, and the power consumption is lower. The test results are shown in Table 1.

TABLE 1-1 test results of atomization and power consumption tests of examples and comparative examples

	T1 (seconds)	T2 (hours)
			Example 1	155	48
Comparative example 1	Difficult driving and difficult atomization	7

Tables 1-2 test results of atomization performance and power consumption of examples and comparative examples

	T1 (seconds)	T2 (hours)
			Example 2	107	67
Comparative example 2	Difficult driving and difficult atomization	13

Tables 1-3 test results of atomization performance and power consumption of examples and comparative examples

	T1 (seconds)	T2 (hours)
			Example 3	321	16
Comparative example 3	Difficult driving and difficult atomization	4

Tables 1-4 test results of atomization performance and power consumption of examples and comparative examples

	T1 (seconds)	T2 (hours)
			Example 4	219	25
Example 6	1035	68
			Example 7	150	18
Comparative example 4	Difficult driving and difficult atomization	6

Tables 1-5 test results of atomization performance and power consumption of examples and comparative examples

	T1 (seconds)	T2 (hours)
			Example 5	137	33
Comparative example 5	253	8

The experimental result shows that the natural or resonant frequency of the sample of the comparison example (PZT-4) (1-4) is too high (up to tens or hundreds of MHz, the thinner the higher the power is), the power exceeds 8W, and the common driving circuit board is difficult to drive to vibrate, so that atomization is difficult.

The experimental results show that the comparative sample consumes much more energy than the examples and is not suitable for miniaturized devices.

From the experimental results, it is found that the closer the natural or resonant frequency of the piezoelectric ceramic sheet (PZT-5) is to the natural or resonant frequency of water (42khz), the higher the atomization efficiency is, and the more the deviation is, the lower the atomization efficiency is.

From the experimental results, it is known that the intrinsic or resonance frequency of the above piezoelectric ceramic sheet (PZT-5) is less than 35kHz, such as 24kHz (which is about 60mm long and about 20mm wide), the size of the piezoelectric active region is too large, and the power consumption is greatly increased, which is not suitable for miniaturized devices such as electronic cigarettes.

From the experimental results, it is known that when the natural or resonant frequency of the piezoelectric ceramic sheet (PZT-5) increases, the size of the piezoelectric active region becomes smaller, and after the size is larger than 250kHz, for example, 300kHz (about 3mm long or less, about 1.5mm wide or less), the area of the piezoelectric active region of the piezoelectric ceramic sheet is too small, the working region is too small, the atomization efficiency is too low, and the piezoelectric ceramic sheet is not practical basically, and is not suitable for a miniaturized electronic cigarette device.

In summary, under the condition that the atomization performance is acceptable, the ultrasonic atomization sheet according to the present invention can meet the specific sequence requirement of the miniaturized electronic cigarette device: the size can be reduced as much as possible, the endurance time can be prolonged, and the compliance can be increased as much as possible, so that the device is convenient to use.

Claims

2. The ultrasonic atomization plate of claim 1, wherein the width of the piezoelectric active area of the piezoelectric ceramic plate is 2mm to 10mm, the length of the piezoelectric active area of the piezoelectric ceramic plate is 7mm to 25mm, the frequency is 60kHz to 180kHz, the length of the ultrasonic atomization plate is not more than 50mm, the width of the ultrasonic atomization plate is not more than 15mm, the thickness of the ultrasonic atomization plate is not more than 1mm, and the power is not more than 6W.

3. The ultrasonic atomization plate of claim 2, wherein the width of the piezoelectric active area of the piezoelectric ceramic plate is 3mm to 8mm, the length of the piezoelectric active area of the piezoelectric ceramic plate is 10mm to 20mm, the frequency is 70kHz to 150kHz, the length of the ultrasonic atomization plate is not more than 45mm, the width of the ultrasonic atomization plate is not more than 15mm, the thickness of the ultrasonic atomization plate is not more than 1mm, and the power is not more than 6W.

4. The ultrasonic atomization plate of claim 2, wherein the width of the piezoelectric active area of the piezoelectric ceramic plate is 3mm to 6mm, the length of the piezoelectric active area of the piezoelectric ceramic plate is 10mm to 15mm, the frequency is 80kHz to 120kHz, the length of the ultrasonic atomization plate is not more than 40mm, the width of the ultrasonic atomization plate is not more than 12mm, the thickness of the ultrasonic atomization plate is not more than 0.75mm, and the power is not more than 4W.

5. The ultrasonic atomization sheet according to claim 1, wherein the ratio of the width of the ultrasonic atomization sheet to the width of the piezoceramic sheet is 1 to 1.5, and the ratio of the length of the ultrasonic atomization sheet to the length of the piezoceramic sheet is 1 to 3.

6. The ultrasonic atomization sheet according to claim 1, wherein the ratio of the width of the ultrasonic atomization sheet to the width of the piezoceramic sheet is 1.05 to 1.3, and the ratio of the length of the ultrasonic atomization sheet to the length of the piezoceramic sheet is 1.3 to 2.

7. The ultrasonic atomizing plate according to any one of claims 1 to 4, characterized in that the ratio of the length of said piezoelectric ceramic plate to the length of the piezoelectric active area of said piezoelectric ceramic plate or/and the ratio of the width of said piezoelectric ceramic plate to the width of the piezoelectric active area of said piezoelectric ceramic plate is 1 to 2.0.

8. The ultrasonic atomizing plate according to any one of claims 1 to 4, characterized in that the ratio of the length of the piezoelectric ceramic plate to the length of the piezoelectric active area of the piezoelectric ceramic plate or/and the ratio of the width of the piezoelectric ceramic plate to the width of the piezoelectric active area of the piezoelectric ceramic plate is 1 to 1.5.

9. An ultrasonic atomizing plate according to any one of claims 1 to 4, characterized in that the thickness of said electro-ceramic plate is not more than 0.4 mm.

10. An ultrasonic atomizing plate according to any one of claims 1 to 4, characterized in that the thickness of said electro-ceramic plate is not more than 0.3 mm.

11. An ultrasonic atomizing plate according to any one of claims 1 to 4, characterized in that the thickness of said electro-ceramic plate is not more than 0.2 mm.

12. An ultrasonic atomizing plate according to any one of claims 1 to 4, characterized in that the rated power or driving power is not more than 3W.

13. An ultrasonic atomizing sheet according to any one of claims 1 to 4, characterized in that the total thickness of the elastic bonding body or the electrode in the ultrasonic atomizing sheet is not more than 0.1 mm.

14. The ultrasonic atomization sheet according to any one of claims 1 to 4, characterized in that the ultrasonic atomization sheet further comprises a vibration plate.

15. An ultrasonic atomizing sheet according to claim 14, wherein said vibrating plate is selected from the group consisting of a metal plate and/or a plastic plate, and a composite plate thereof.

16. The ultrasonic atomization plate of claim 14, wherein the piezoceramics plate is 2 plates, and is fixed on both sides of the vibration plate substantially symmetrically.

17. The ultrasonic atomization plate of claim 14, wherein the vibration plate completely covers one side surface of the piezoceramic sheet.

18. The ultrasonic atomizing plate according to claim 14, wherein said vibration plate is substantially rectangular, is longer than said piezoelectric ceramic plate, and is a part or the whole of a region not covered with said piezoelectric ceramic plate as a fixing region of said ultrasonic atomizing plate.

19. The ultrasonic atomization sheet according to claim 14, wherein the thickness of the vibration plate is not more than 0.3 mm.

20. The ultrasonic atomization sheet according to claim 14, wherein the thickness of the vibration plate is not more than 0.2 mm.

21. The ultrasonic atomization sheet according to claim 14, wherein the thickness of the vibration plate is not more than 0.1 mm.

22. The ultrasonic atomization sheet according to claim 14, wherein the thickness of the vibration plate is not more than 0.05 mm.

23. An ultrasonic atomization sheet according to claim 15, characterized in that the metal is selected from titanium alloys.

24. The ultrasonic atomization sheet according to claim 15, characterized in that the metal is selected from stainless steel.

25. An ultrasonic atomization sheet according to claim 15, characterized in that the metal is selected from 316 or 316L stainless steel.

26. An ultrasonic atomizing sheet according to claim 15, characterized in that said metal is medical grade.

27. The ultrasonic atomizing plate of claim 1, wherein the ultrasonic atomizing plate has an operating voltage of 3 to 36V.

28. An ultrasonic atomizing sheet according to claim 1, characterized in that said piezoelectric ceramic is PZT-5.

29. An electronic cigarette, characterized by comprising the ultrasonic atomization sheet according to any one of claims 1 to 28.