Central surface acoustic wave heating element

A surface acoustic wave and heating element technology, which is applied in the field of central surface acoustic wave heating elements, can solve problems such as insufficient release of aroma and active ingredients, decline in electric heating performance of heating elements, and poor overall sensory quality, etc., to avoid sintering Adhesion, high heating efficiency, low heat generation effect

Pending Publication Date: 2020-08-25
CHINA TOBACCO YUNNAN IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the technical application of central resistive heating is relatively mature, it generally has the following technical defects: 1. It belongs to heat conduction heating. The phenomenon of carbonization is very easy to occur, and the part of the cigarette core far away from the heat source is insufficiently heated, resulting in insufficient release of aroma and active ingredients, and the overall sensory quality is not good; 2. The heating circuit on the heating element is in contact with the cigarette co

Method used

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  • Central surface acoustic wave heating element
  • Central surface acoustic wave heating element
  • Central surface acoustic wave heating element

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The structural schematic diagram and assembly effect diagram of the center-type surface acoustic wave heating element of this embodiment are shown in Figure 1 to Figure 3 , The central surface acoustic wave heating element is sword-shaped. The central surface acoustic wave heating element 1 includes a sword-shaped piezoelectric substrate 11, two interdigital electrode structures, respectively a first interdigital electrode structure 12a and a second interdigital electrode structure 13a, the two interdigital electrode structures Located on the upper and lower surfaces of the sword tail; the piezoelectric substrate 11, the first interdigitated electrode structure 12a, and the second interdigitated electrode structure 13a have a protective film layer 14, and the protective film material is generally silicon dioxide, Teflon , Parylene or SU8-2002 photoresist, etc., the thickness is preferably 1-3 μm, and this embodiment is 2 μm; the thickness of the sword tail is 0.5 mm, a...

Embodiment 2

[0033] Such as Figure 4 As shown, the front end of the central surface acoustic wave heating element in this embodiment is a conical rod. The central surface acoustic wave heating element 1 includes a rod-shaped piezoelectric substrate 11, and the two interdigital electrode structures are respectively the third interdigital electrode structure 12b and the fourth interdigital electrode structure 13b, the two interdigital electrode structures are located on the rod The periphery of the tail end; the surface of the piezoelectric substrate 11, the third interdigital electrode structure 12b, and the fourth interdigital electrode structure 13b has a protective film layer 14, the protective film material is the same as the embodiment, and the thickness is preferably 1-3 μm. This embodiment is also 2 μm; the perimeter of the rod tail end is 10mm; the material of the piezoelectric substrate 11 is the same as that of embodiment 1, and the interdigitated electrode structure of this embo...

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Abstract

The invention discloses a central surface acoustic wave heating element, which mainly comprises a piezoelectric substrate (11), interdigital electrode structures and a sleeve base (3), wherein the front end of the piezoelectric substrate (11) is tip-shaped, and one or more interdigital electrode structures are arranged on the wall of the rear end of the piezoelectric substrate (11); the sleeve base (3) is sleeved at the rear end of the piezoelectric substrate (11), and the interdigital electrode structuresarepositioned in the sleeve base (3); and two electrodes are arranged at the bottom end of the sleeve base (3) and are electrically connected with bus bars of the interdigital electrode structures respectively. The central type acoustic surface wave heating element is used for heating non-combustible cigarettes and has the advantages of being high in heating efficiency, good in heat uniformity, high in safety coefficient and the like, and an acoustic surface wave excitation source does not make contact with a cigarette core.

Description

technical field [0001] The invention belongs to the technical field of heat-not-burn cigarettes, and in particular relates to a central surface acoustic wave heating element. Background technique [0002] In recent years, with the increasingly severe global tobacco control situation and the gradual improvement of consumers' health awareness, the disadvantages of traditional cigarettes have become increasingly prominent. Heat-not-burn cigarettes have attracted worldwide attention due to their significant advantages in reducing the release of harmful components. It has become the focus of competition among major tobacco companies at home and abroad. [0003] The heating element is the core component of the heat-not-burn cigarette, and its heating performance directly affects the user's smoking experience and safety and health. In the prior art, the common heating element used for heating non-burning cigarettes is resistive heating, which is divided into central resistive heat...

Claims

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Application Information

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IPC IPC(8): A24F40/46
CPCA24F40/46
Inventor 李廷华朱东来李寿波张霞韩熠吴俊巩效伟赵伟洪鎏吕茜
Owner CHINA TOBACCO YUNNAN IND
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