Ultrasonic atomization sheet and atomizer and ultrasonic electronic cigarette

Patent metadata

Field	Value
Publication number	US-11980222-B2
Application number	US-201917278231-A
Country	US
Kind code	B2
Filing date	Sep 20, 2019
Priority date	Sep 21, 2018
Publication date	May 14, 2024
Grant date	May 14, 2024

Abstract

An ultrasonic atomization sheet ( 1 ) and atomizer and an ultrasonic electronic cigarette are disclosed. The ultrasonic atomization sheet ( 1 ) comprises a flaky piezoelectric substrate ( 101 ), a surface electrode ( 102 ) attached to one surface of the piezoelectric substrate ( 101 ), and a drive electrode ( 103 ) attached to the other surface of the piezoelectric substrate ( 101 ). The piezoelectric substrate ( 101 ) is elongated. The piezoelectric substrate ( 101 ) is composed of an oscillating section ( 106 ) and a fixed section ( 107 ) connected to each other. The surface electrode ( 102 ) is fixed on one surface of the oscillating section ( 106 ), and the drive electrode ( 103 ) is fixed on the other surface of the oscillating section ( 106 ). The surface electrode ( 102 ) and the drive electrode ( 103 ) are both rectangular or circular.

First claim

The invention claimed is:

1. An ultrasonic atomizer, comprising:
a shell ( 2 ) in which a holder ( 20 ) is arranged; and an ultrasonic atomization sheet ( 1 ) comprising a flaky piezoelectric substrate ( 101 ), a surface electrode ( 102 ) attached to one surface of the piezoelectric substrate ( 101 ), and a drive electrode ( 103 ) attached to another surface of the piezoelectric substrate ( 101 ), wherein the piezoelectric substrate ( 101 ) is elongated, wherein:
the ultrasonic atomization sheet ( 1 ) is further arranged in the shell ( 2 ), and
the holder ( 20 ) is fixed in a middle region between two side walls of the ultrasonic atomization sheet ( 1 ), so that both ends of the ultrasonic atomization sheet ( 1 ) are in a free state.

2. The ultrasonic atomizer according to claim 1 , wherein:
the piezoelectric substrate ( 101 ) is composed of an oscillating section ( 106 ) and a fixed section ( 107 ) connected to each other,
the surface electrode ( 102 ) is fixed on one surface of the oscillating section ( 106 ), and
the drive electrode ( 103 ) is fixed on another surface of the oscillating section ( 106 ).

3. The ultrasonic atomizer according to claim 2 , wherein,
the surface electrode ( 102 ) and the drive electrode ( 103 ) are both rectangular;
or,
the surface electrode ( 102 ) and the drive electrode ( 103 ) are both circular.

4. The ultrasonic atomizer according to claim 1 , wherein:
the one surface of the piezoelectric substrate ( 101 ) is fully covered by the surface electrode ( 102 ),
a central region of the other surface of the piezoelectric substrate ( 101 ) is covered by the drive electrode ( 103 ), and
an area ratio of the surface electrode ( 102 ) to the drive electrode ( 103 ) is a:b, where a is larger than b.

5. The ultrasonic atomizer according to claim 3 , wherein:
the one surface of the oscillating section ( 106 ) is fully covered by the surface electrode ( 102 ),
a central region of the other surface of the oscillating section ( 106 ) is covered by the drive electrode ( 103 ), and
an area ratio of the surface electrode ( 102 ) to the drive electrode ( 103 ) is a:b, where a is larger than b.

6. The ultrasonic atomizer according to claim 3 , wherein:
the one surface of the oscillating section ( 106 ) is composed of an attachment region (I) fixed with the surface electrode ( 102 ) and an exposed region (II) not fixed with the surface electrode ( 102 ),
the attachment region ( 1 ) and the exposed region (II) are arranged along the length direction of the oscillating section ( 106 ), and
the attachment region ( 1 ) is closer to the fixed section ( 107 ) than the exposed region (II); and
an area ratio of the surface electrode ( 102 ) to the drive electrode ( 103 ) is a:b, where a is larger than b.

7. The ultrasonic atomizer according to claim 1 , wherein the piezoelectric substrate ( 101 ) is further provided with a first welding spot ( 104 ) connected with the surface electrode ( 102 ) and a second welding spot ( 105 ) connected with the drive electrode ( 103 ).

8. The ultrasonic atomizer according to claim 7 , wherein:
the first welding spot ( 104 ) is arranged at an outer edge of the surface electrode ( 102 ), and
the second welding spot ( 105 ) is arranged at an outer edge of the drive electrode ( 103 ).

9. The ultrasonic atomizer according to claim 7 , wherein:
the first welding spot ( 104 ) and the second welding spot ( 105 ) are both arranged on an outer surface of a fixed section ( 107 ),
a first conductive lead ( 108 ) connecting the first welding spot ( 104 ) with the surface electrode ( 102 ) is fixed on the piezoelectric substrate ( 101 ), and
a second conductive lead ( 109 ) connecting the second welding spot ( 105 ) with the drive electrode ( 103 ) is fixed on the piezoelectric substrate ( 101 ).

10. The ultrasonic atomizer according to claim 9 , wherein:
a shape of the first conductive lead ( 108 ) is an isosceles trapezoid,
a large end of the first conductive lead ( 108 ) is connected to the surface electrode ( 102 ) in a smooth transition manner, and
a small end of the first conductive lead ( 108 ) is connected to the first welding spot ( 104 ) in a smooth transition manner;
a shape of the second conductive lead ( 109 ) is an isosceles trapezoid,
a large end of the second conductive lead ( 109 ) is connected to the drive electrode ( 103 ) in a smooth transition manner, and
a small end of the second conductive lead ( 109 ) is connected to the second welding spot ( 105 ) in a smooth transition manner.

11. The ultrasonic atomizer according to claim 2 , wherein:
the surface electrode ( 102 ) and the drive electrode ( 103 ) are both circular; and
an outer end of the oscillating section ( 106 ) and/or the fixed section ( 107 ) is an arc surface.

12. The ultrasonic atomizer according to claim 1 , wherein:
an outer edge of the piezoelectric substrate ( 101 ) is provided with a first welding spot ( 104 ) connected with the surface electrode ( 102 ), and
the outer edge of the piezoelectric substrate ( 101 ) is provided with a second welding spot ( 105 ) connected with the drive electrode ( 103 ); and
the first welding spot ( 104 ) and the second welding spot ( 105 ) are both arranged at edge positions of the ultrasonic atomization sheet ( 1 ) and in a fixed region where the ultrasonic atomization sheet ( 1 ) is fixed by the holder ( 20 ).

13. The ultrasonic atomizer according to claim 1 , wherein:
the piezoelectric substrate ( 101 ) is composed of an oscillating section ( 106 ) and a fixed section ( 107 ) connected to each other,
the fixed section ( 107 ) of the ultrasonic atomization sheet ( 1 ) is fixed by the holder ( 20 ), and
the oscillating section ( 106 ) of the ultrasonic atomization sheet ( 1 ) is a free section.

14. An ultrasonic electronic cigarette, comprising an ultrasonic atomizer, wherein the ultrasonic atomizer comprises: a shell ( 2 ) in which a holder ( 20 ) is arranged; and
the ultrasonic atomization sheet ( 1 ) comprising a flaky piezoelectric substrate ( 101 ), a surface electrode ( 102 ) attached to one surface of the piezoelectric substrate ( 101 ), and a drive electrode ( 103 ) attached to another surface of the piezoelectric substrate ( 101 ), wherein the piezoelectric substrate ( 101 ) is elongated, wherein:
the ultrasonic atomization sheet ( 1 ) is arranged in the shell ( 2 ),
the piezoelectric substrate ( 101 ) is composed of an oscillating section ( 106 ) and a fixed section ( 107 ) connected to each other,
the fixed section ( 107 ) of the ultrasonic atomization sheet ( 1 ) is fixed by the holder ( 20 ), and
the oscillating section ( 106 ) of the ultrasonic atomization sheet ( 1 ) is a free section;
wherein:
an e-liquid guide mechanism ( 3 ) and an e-liquid compartment ( 4 ) are further arranged in the shell ( 2 ), and
the e-liquid compartment ( 4 ) is communicated with an atomization surface of the ultrasonic atomization sheet ( 1 ) through the e-liquid guide mechanism ( 3 ).

15. The ultrasonic electronic cigarette according to claim 14 , wherein:
a limit plate ( 5 ) is arranged in the shell ( 2 ),
the limit plate ( 5 ) is located on one side of the ultrasonic atomization sheet ( 1 ), and the e-liquid guide mechanism ( 3 ) is located on another side of the ultrasonic atomization sheet ( 1 ); and
there is a gap ( 6 ) between the limit plate ( 5 ) and the oscillating section ( 106 ) of the ultrasonic atomization sheet ( 1 ).

16. The ultrasonic electronic cigarette according to claim 14 , wherein:
an outer atomization sleeve ( 7 ) and an inner atomization sleeve ( 8 ) a

Assignees

• China Tobacco Hunan Ind Co Ltd

Inventors

• Liu Jianfu
• Zhong Kejun
• Guo Xiaoyi
• Huang Wei
• Yin Xinqiang
• Yi Jianhua
• Kuang Yecheng
• Zhou Yongquan

Classifications

• A24F40/05 Primary

  Devices without heating means · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24F40/485

  Valves; Apertures · CPC title

• A24F40/70

  Manufacture · CPC title

• B05B17/0653

  Details · CPC title