CN-121986546-A - Atomizer, electronic atomizing device and manufacturing method

Abstract

An atomizer has a liquid reservoir for storing a liquid matrix and an induction heating element. The induction heating element is capable of heating the liquid matrix by penetration by a varying magnetic field to generate an aerosol. The induction heating element has at least one recess such that the induction heating element is fluid permeable. The induction heating element defines at least one and/or no more than two magnetic circuit portions extending in a longitudinal direction, thereby providing at least one and/or no more than two magnetic flux paths through the induction heating element.

Inventors

• LI XINJUN
• LI YINZHE
• LI YONGHAI
• LIU YONGQIANG
• XU ZHONGLI

Assignees

• 菲利普莫里斯生产公司

Dates

Publication Date

20260505

Application Date

20240627

Priority Date

20230720

Claims (20)

1. 1. An atomizer, comprising: A liquid storage chamber for storing a liquid matrix, and An induction heating element capable of heating the liquid matrix by penetration by a varying magnetic field to generate an aerosol; Wherein the induction heating element comprises at least one recess such that the induction heating element is fluid permeable, and Wherein the induction heating element defines at least one and/or no more than two magnetic circuit portions extending in a longitudinal direction, thereby providing at least one and/or no more than two magnetic flux paths through the induction heating element.
2. 2. The atomizer of claim 1, wherein the induction heating element is a planar heating element.
3. 3. A nebulizer according to claim 1 or 2 wherein the magnetic circuit portion is arranged to extend in a continuous and uninterrupted manner in the longitudinal direction of the induction heating element.
4. 4. A nebulizer according to any one of the preceding claims, wherein the magnetic circuit portion extends in a straight manner in the longitudinal direction of the induction heating element.
5. 5. A nebulizer as claimed in any one of the preceding claims, wherein the induction heating element has a mass of 1mg to 30 mg.
6. 6. The nebulizer of any one of the preceding claims, further comprising a liquid guiding element, wherein the liquid guiding element comprises a liquid absorbing surface and a nebulizing surface, wherein the liquid absorbing surface is in fluid communication with the liquid storage chamber for absorbing the liquid matrix.
7. 7. The atomizer of claim 6, wherein the induction heating element is disposed on or bonded to the atomizing surface.
8. 8. The atomizer of any one of the preceding claims, wherein the induction heating element comprises a first side and a second side opposite the first side in a width direction, and Wherein the recess comprises one or more first recesses arranged on the first side and/or one or more second recesses arranged on the second side.
9. 9. The atomizer of claim 8, wherein the plurality of first recesses are arranged to be spaced apart along the longitudinal direction such that the first side has a saw tooth shape, and/or The plurality of second recesses are arranged spaced apart along the longitudinal direction such that the second side has a saw tooth shape.
10. 10. The atomizer of claim 8 or 9, wherein the plurality of first recesses are arranged to be spaced apart along the longitudinal direction such that a plurality of first tooth portions are defined between adjacent first recesses, and/or The plurality of second recesses are arranged to be spaced apart along the longitudinal direction such that a plurality of second tooth portions are defined between adjacent second recesses.
11. 11. The atomizer of claim 10, wherein the atomizer holds the induction heating element in place by at least one of the first tooth portions and/or at least one of the second tooth portions.
12. 12. The atomizer of any one of claims 8 to 11, wherein the one or more first notches are located between the magnetic circuit portion and the first side, and/or The one or more second notches are located between the magnetic circuit portion and the second side.
13. 13. A nebulizer as claimed in any one of the preceding claims, wherein a width dimension of the inductive heating element varies along the longitudinal direction.
14. 14. The atomizer of any one of the preceding claims, wherein the induction heating element comprises a first end and a second end opposite the first end along the longitudinal direction, and wherein: at least one first extension portion extends from the main body portion of the induction heating element and/or from the magnetic circuit portion towards the first end and terminates at the first end, and/or At least one second extension extends from the body portion of the induction heating element and/or from the magnetic circuit portion towards and terminates at the second end.
15. 15. The atomizer of claim 14, wherein the atomizer retains the induction heating element by the at least one first extension and/or by the at least one second extension.
16. 16. A nebulizer as claimed in any one of the preceding claims, wherein the inductive heating element or a body portion of the inductive heating element has a generally rectangular shape.
17. 17. A nebulizer as claimed in any one of the preceding claims, wherein the inductive heating element or a body portion of the inductive heating element comprises perforations or through holes.
18. 18. A nebulizer as claimed in any one of the preceding claims, wherein the inductive heating element or a body portion of the inductive heating element is formed as a mesh.
19. 19. An atomizer, comprising: A liquid storage chamber for storing a liquid matrix; A liquid guiding element fluidly connected to the liquid storage chamber for absorbing the liquid matrix, and An induction heating element disposed on the liquid guiding element and capable of heating the liquid matrix by penetration by a varying magnetic field to generate an aerosol; Wherein the induction heating element has a first end and a second end opposite the first end along a longitudinal direction, and wherein the induction heating element comprises: A body portion extending along the longitudinal direction; At least one first extension extending from the body portion toward the first end and terminating at the first end; at least one second extension portion extends from the body portion toward the second end and terminates at the second end.
20. 20. The atomizer of claim 19, wherein the atomizer is configured to retain the induction heating element by the first extension and/or the second extension.

Description

Atomizer, electronic atomizing device and manufacturing method Technical Field Atomizer, electronic atomizing device and induction heating element for atomizer. Background Tobacco products (such as cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco combustion products by making products that release the compounds without combustion. Examples of such products are heating devices that release compounds by heating rather than burning the material. For example, the material may be tobacco or other non-tobacco products that may or may not contain nicotine. As another example, aerosol delivery products exist, such as so-called electronic nebulization devices. These devices typically include a liquid that is heated to vaporize it, thereby producing an inhalable aerosol. In known electronic atomizing devices, a grid-like induction heating element heats a liquid under penetration of a magnetic field to generate an aerosol. The aerosol passes through the mesh of the mesh-like inductive heating element and is then released in the airflow channel and delivered to the user. For example, fig. 1 shows a schematic view of a prior art cylindrical induction heating element 1, and fig. 2 shows a schematic view of a prior art planar grid-like induction heating element 1 a. During use, as indicated by arrow 2a in fig. 2, there are a plurality of magnetic flux paths on the grid-like inductive heating element 1/1a such that the magnetic field strength is dispersed among the plurality of magnetic flux paths (or magnetic paths) 2a when heat is generated under penetration by a varying magnetic field. Based on Maxwell's theory, this results in a relatively slow temperature rise of the induction heating element 1/1a at the same input magnetic field energy. Disclosure of Invention According to an aspect of the present invention, there is provided an atomizer. The atomizer includes: a liquid storage chamber for storing a liquid matrix, An induction heating element capable of generating heat by penetration by a varying magnetic field to heat the liquid matrix to produce an aerosol, wherein the induction heating element comprises at least one recess such that the induction heating element is fluid permeable, and the induction heating element defines at least one and/or no more than two magnetic circuit portions extending in a longitudinal direction to provide at least one and/or no more than two magnetic flux paths through the induction heating element. The induction heating element may define at least one magnetic circuit portion extending in a longitudinal direction and providing at least one magnetic flux path through the induction heating element. Alternatively or additionally, the induction heating element may define no more than two magnetic circuit portions extending in the longitudinal direction and providing no more than two magnetic flux paths through the induction heating element. Each magnetic circuit portion may provide a corresponding magnetic flux path. In some embodiments, the induction heating element is a planar heating element. Alternatively, in some variant embodiments, the induction heating element is a curved heating element. In some embodiments, the magnetic circuit portion is arranged to extend in a continuous and uninterrupted manner in the longitudinal direction of the induction heating element. In some embodiments, the magnetic circuit portion extends in a planar manner in the longitudinal direction of the induction heating element. In some embodiments, the induction heating element has a mass of 1mg to 30 mg. In some embodiments, the atomizer further comprises a liquid guiding element comprising a liquid absorbing surface and an atomizing surface. The liquid absorbing surface may be fluidly connected to the liquid storage chamber for absorbing the liquid matrix. The liquid directing element may be configured to aspirate a liquid matrix at the liquid absorbing surface and deliver the aspirated liquid matrix to the induction heating element. The liquid guiding element may be permeable to the liquid matrix. The liquid guiding element may be a wicking element. The liquid guiding element may be configured to supply the liquid matrix to the induction heating element. The liquid guiding element may comprise or consist of a fibrous material. For example, the liquid guiding element may comprise a nonwoven fabric or a glass fiber strand. The liquid guiding element may comprise or consist of cotton. The liquid guiding element may comprise or consist of a ceramic material. The liquid guiding element may comprise or be made of bristle tubule structures such as porous ceramics, porous glass. The liquid directing element may be configured to be immersed in a liquid matrix. The induction heating element may be arranged on the liquid guiding element. The induction heating element may be disposed on an atomizing surface of the liquid guiding element. The i