Ultrasonic atomization core, ultrasonic atomizer, and ultrasonic electronic cigarette

Patent metadata

Field	Value
Publication number	US-12029243-B2
Application number	US-201917258110-A
Country	US
Kind code	B2
Filing date	Jul 3, 2019
Priority date	Jul 6, 2018
Publication date	Jul 9, 2024
Grant date	Jul 9, 2024

Abstract

An ultrasonic atomization core ( 17 ), an ultrasonic atomizer, and an ultrasonic electronic cigarette are disclosed. The ultrasonic atomization core ( 17 ) comprises an atomization sleeve ( 1 ). The atomization sleeve is provided with an ultrasonic atomization sheet ( 2 ) and e-liquid guide cotton ( 3 ) that communicates the outside with an atomization surface of the ultrasonic atomization sheet ( 2 ). The atomization surface of the ultrasonic atomization sheet ( 2 ) is a concave surface. The e-liquid guide cotton ( 3 ) has a convex surface corresponding to the atomization surface. The curvature of the convex surface of the e-liquid guide cotton ( 3 ) is greater than or equal to the curvature of the atomization surface of the ultrasonic atomization sheet ( 2 ). The convex surface of the e-liquid guide cotton ( 3 ) is in contact with the atomization surface of the ultrasonic atomization sheet ( 2 ).

First claim

The invention claimed is:

1. An ultrasonic atomization core, comprising:
an atomization sleeve ( 1 ), wherein:
the atomization sleeve ( 1 ) is provided with an ultrasonic atomization sheet ( 2 ) and e-liquid guide cotton ( 3 ) that communicates the outside with an atomization surface of the ultrasonic atomization sheet ( 2 ),
the atomization surface of the ultrasonic atomization sheet ( 2 ) is a concave surface,
the e-liquid guide cotton ( 3 ) has a convex surface corresponding to the atomization surface, and
a curvature of the convex surface of the e-liquid guide cotton ( 3 ) is greater than a curvature of the atomization surface of the ultrasonic atomization sheet ( 2 ), such that a gap is formed when the convex surface of the e-liquid guide cotton ( 3 ) is in contact with a center of the atomization surface of the ultrasonic atomization sheet ( 2 ).

2. The ultrasonic atomization core according to claim 1 , wherein:
the ultrasonic atomization sheet ( 2 ) is spherical,
the e-liquid guide cotton ( 3 ) has a spherical portion ( 301 ),
a curvature of the spherical portion ( 301 ) of the e-liquid guide cotton ( 3 ) is greater than the curvature of the spherical ultrasonic atomization sheet ( 2 ), and
a convex surface of the spherical portion ( 301 ) of the e-liquid guide cotton ( 3 ) is in contact with the concave surface of the ultrasonic atomization sheet ( 2 ).

3. The ultrasonic atomization core according to claim 2 , wherein a central axis of the spherical portion ( 301 ) of the e-liquid guide cotton ( 3 ) is collinear with a central axis of the ultrasonic atomization sheet ( 2 ).

4. The ultrasonic atomization core according to claim 2 , further comprising an inner sleeve ( 4 ) sleeved in the atomization sleeve ( 1 ), wherein:
the e-liquid guide cotton ( 3 ) further comprises a hollow cylindrical portion ( 302 ),
the hollow cylindrical portion ( 302 ) is connected with the spherical portion ( 301 ) to form a cup-shaped structure,
the hollow cylindrical portion ( 302 ) is sandwiched between the atomization sleeve ( 1 ) and the inner sleeve ( 4 ), and
the atomization sleeve ( 1 ) is provided with a through hole ( 101 ) that communicates the hollow cylindrical portion ( 302 ) with the outside.

5. The ultrasonic atomization core according to claim 4 , further comprising a cotton pressing structure ( 5 ), wherein:
one end of the cotton pressing structure ( 5 ) abuts against the inner sleeve ( 4 ), and
another end of the cotton pressing structure ( 5 ) abuts against the concave surface of the spherical portion ( 301 ) of the e-liquid guide cotton ( 3 ).

6. The ultrasonic atomization core according to claim 5 , wherein:
the cotton pressing structure ( 5 ) comprises a ring portion ( 501 ) and at least three first elastic strands ( 502 ),
fixed ends of the first elastic strands ( 502 ) are connected with the ring portion ( 501 ),
free ends of the first elastic strands ( 502 ) abut against the spherical portion ( 301 ) of the e-liquid guide cotton ( 3 ), and
the ring portion ( 501 ) abuts against the inner sleeve ( 4 ).

7. The ultrasonic atomization core according to claim 6 , wherein:
the first elastic strands ( 502 ) are uniformly arranged along the circumference of the ring portion ( 501 ), and
the free ends of the first elastic strands ( 502 ) are arc-shaped and attached to the concave surface of the spherical portion ( 301 ) of the e-liquid guide cotton ( 3 ).

8. An ultrasonic atomizer, comprising:
a housing ( 6 ), wherein an ultrasonic atomization core ( 17 ) is arranged in the housing ( 6 ), the ultrasonic atomization core comprising:
an atomization sleeve ( 1 ), wherein:
the atomization sleeve ( 1 ) is provided with an ultrasonic atomization sheet ( 2 ) and e-liquid guide cotton ( 3 ) that communicates the outside with an atomization surface of the ultrasonic atomization sheet ( 2 ),
the atomization surface of the ultrasonic atomization sheet ( 2 ) is a concave surface,
the e-liquid guide cotton ( 3 ) has a convex surface corresponding to the atomization surface, and
a curvature of the convex surface of the e-liquid guide cotton ( 3 ) is greater than a curvature of the atomization surface of the ultrasonic atomization sheet ( 2 ), such that a gap is formed when the convex surface of the e-liquid guide cotton ( 3 ) is in contact with a center of the atomization surface of the ultrasonic atomization sheet ( 2 ).

9. The ultrasonic atomizer according to claim 8 , wherein:
the ultrasonic atomization sheet ( 2 ) is spherical,
the e-liquid guide cotton ( 3 ) has a spherical portion ( 301 ),
a curvature of the spherical portion ( 301 ) of the e-liquid guide cotton ( 3 ) is greater than the curvature of the spherical ultrasonic atomization sheet ( 2 ), and
a convex surface of the spherical portion ( 301 ) of the e-liquid guide cotton ( 3 ) is in contact with the concave surface of the ultrasonic atomization sheet ( 2 ); and
the housing ( 6 ) is provided with an elastic electrode ( 7 ) that abuts against the convex surface of the ultrasonic atomization sheet ( 2 ).

10. The ultrasonic atomizer according to claim 9 , wherein:
the elastic electrode ( 7 ) comprises a cylindrical portion ( 701 ) and at least three second elastic strands ( 702 ),
fixed ends of the second elastic strands ( 702 ) are connected with the cylindrical portion ( 701 ), and
free ends of the second elastic strands ( 702 ) abut against the convex surface of the ultrasonic atomization sheet ( 2 ).

11. The ultrasonic atomizer according to claim 10 , wherein:
the second elastic strands ( 702 ) are uniformly arranged on an end surface of the cylindrical portion ( 701 ), and
the free ends of the second elastic strands ( 702 ) are arc-shaped and attached to the convex surface of the ultrasonic atomization sheet ( 2 ).

12. The ultrasonic atomizer according to claim 8 , wherein:
the atomization core ( 17 ) is connected to the housing ( 6 ) through a connecting sleeve ( 8 );
the housing ( 6 ) comprises a top cover ( 601 ), a base ( 602 ), and a bottom cover ( 603 ) that are connected in sequence,
the base ( 602 ) is detachably connected to the bottom cover ( 603 ),
a middle section of an outer side wall of the atomization core ( 17 ) is in clearance fit with an inner side wall of the base ( 602 ),
an upper section of the outer side wall of the atomization core ( 17 ) is provided with an external threaded portion ( 1701 ), and
an inner side wall of the connecting sleeve ( 8 ) is provided with an internal threaded portion ( 801 ) matching the external threaded portion ( 1701 ).

13. The ultrasonic atomizer according to claim 12 , wherein:
an e-liquid bin ( 10 ) is arranged in the top cover ( 601 ), and the atomization sleeve ( 1 ) is provided with a through hole ( 101 ) that communicates the e-liquid guide cotton ( 3 ) with the e-liquid bin ( 10 ); and
a middle section of an outer side wall of the atomization sleeve ( 1 ) is in clearance fit with the inner side wall of the base ( 602 ), and the external threaded portion ( 1701 ) is arranged on an upper section of the outer side wall of the atomization sleeve ( 1 ).

14. The ultrasonic atomizer according to claim 13 , wherein:
the connecting sleeve ( 8 ) has a baffle portion ( 802 ) opposite to an upper part of the through hole ( 101 ), and
an e-liquid passing gap ( 18 ) that communicates the e-liquid bin ( 10 ) with the through hole ( 101 ) is formed between the baffle portion ( 802 ) and the atomization sleeve ( 1 ).

15. The ultrasonic atomizer according to claim 13 , wherein:
a top of the top cover ( 601 ) is provided with a suction nozzle ( 9

Assignees

• China Tobacco Hunan Ind Co Ltd

Inventors

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

Classifications

• B05B17/0607

  generated by electrical means, e.g. piezoelectric transducers · CPC title

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• A24F40/44

  Wicks · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24F40/485

  Valves; Apertures · CPC title