Surface acoustic wave electronic cigarette system

Patent metadata

Field	Value
Publication number	US-10986865-B2
Application number	US-201816479218-A
Country	US
Kind code	B2
Filing date	Oct 25, 2018
Priority date	Jan 26, 2018
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

A surface acoustic wave electronic cigarette system includes a piezoelectric substrate, a liquid guiding cavity, an atomization cavity, and a power feeder port. The liquid guiding cavity and the atomization cavity are provided on an upper surface of the piezoelectric substrate. An isolation board is provided between the liquid guiding cavity and the atomization cavity. The power feeder port is provided on an outer side surface of the piezoelectric substrate. The surface acoustic wave electronic cigarette of the present disclosure generates an aerosol with a smaller particle diameter by atomization, which has a comfortable smoking experience and a pure and subtle fragrance.

First claim

What is claimed is:

1. A surface acoustic wave electronic cigarette system comprising: a piezoelectric substrate, a liquid guiding cavity, an atomization cavity, and a power feeder port, wherein the liquid guiding cavity and the atomization cavity are provided on an upper surface of the piezoelectric substrate; an isolation board is provided between the liquid guiding cavity and the atomization cavity; the power feeder port is provided on an outer side surface of the piezoelectric substrate; the liquid guiding cavity comprises a first interdigital transducer, a liquid storage tank, and a micro-flow channel, wherein the first interdigital transducer is provided on a first side of the liquid storage tank and the micro-flow channel is provided on a second side of the liquid storage tank, the liquid storage tank is connected to the micro-flow channel, and a top of the liquid storage tank is provided with a liquid injection inlet; a T-shaped fiber paper is inserted into the micro-flow channel through a liquid outlet, a second interdigital transducer and a third interdigital transducer are provided at a bottom of the atomization cavity; the second interdigital transducer is provided on a first side of the T-shaped fiber paper and the third interdigital transducer is provided on a second side of the T-shaped fiber paper and are not in contact with the T-shaped fiber paper; an air inlet and a drip tip are respectively provided at a side and the top of the atomization cavity.

2. The surface acoustic wave electronic cigarette system according to claim 1 , wherein the first interdigital transducer, the liquid storage tank, the micro-flow channel, the second interdigital transducer, the third interdigital transducer, and the T-shaped fiber paper are closely attached to a surface of the piezoelectric substrate.

3. The surface acoustic wave electronic cigarette system according to claim 1 , wherein the piezoelectric substrate is made of a material selected from the group consisting of quartz, piezoelectric ceramic, lithium tantalate, and lithium niobate.

4. The surface acoustic wave electronic cigarette system according to claim 3 , wherein the material of the piezoelectric substrate is 128.68° YX lithium niobate; and a thickness of the piezoelectric substrate is 0.5 mm, an electromechanical coupling coefficient of the piezoelectric substrate is 5.5%, a temperature coefficient of the piezoelectric substrate is −72×10 −6 /° C., and a propagation velocity of the surface acoustic wave of the piezoelectric substrate is 3992 m/s.

5. The surface acoustic wave electronic cigarette system according to claim 1 , wherein a traveling surface acoustic wave generated by the first interdigital transducer actively pumps an e-liquid stored in the liquid storage tank to the liquid outlet of the micro-flow channel; a standing surface acoustic wave cooperatively generated by the second interdigital transducer and the third interdigital transducer atomizes an e-liquid film on the T-shaped fiber paper into an aerosol.

6. The surface acoustic wave electronic cigarette system according to claim 1 , wherein the liquid storage tank and the micro-flow channel are made of a high borosilicate glass or polydimethylsiloxane; the T-shaped fiber paper is made of an organic porous material.

7. The surface acoustic wave electronic cigarette system according to claim 1 , wherein the first interdigital transducer, the second interdigital transducer, and the third interdigital transducer are crossed finger-shaped metal films.

8. The surface acoustic wave electronic cigarette system according to claim 7 , wherein the metal film is made of aluminum, copper, or gold.

Assignees

• China Tobacco Yunnan Ind Co Ltd

Inventors

• Li Tinghua
• Han Yi
• Han Junlong
• Zhu Donglai
• Hu Hong
• Chen Yongkuan
• Wu Jun
• Li Shoubo

Classifications

• A24F40/50

  Control or monitoring · CPC title

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• A24F40/30 Primary

  Devices using two or more structurally separated inhalable precursors, e.g. using two liquid precursors in two cartridges · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24B15/167

  in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes · CPC title