Heating assembly and aerosol generating device

Patent metadata

Field	Value
Publication number	US-2025057232-A1
Application number	US-202218717772-A
Country	US
Kind code	A1
Filing date	Dec 14, 2022
Priority date	Dec 21, 2021
Publication date	Feb 20, 2025
Grant date	—

Abstract

A heating assembly and an aerosol generating device are provided. The heating assembly includes a substrate made of metal. The substrate is a thermal radiation element for radiating heat to heat an inhalable product, thereby causing the inhalable product to generate an aerosol. The substrate is doped with a non-metal element, along a depth direction with a radiating surface of the substrate as a starting point. A distribution density of the non-metal element at a first depth is greater than a distribution density of the non-metal element at a second depth. The second depth is greater than the first depth. The substrate has a non-metal element in a surface layer of a certain thickness.

First claim

1 . A heating assembly comprising:
a substrate made of metal, wherein the substrate comprises a thermal radiation element configured to radiate heat to heat an inhalable product, to cause the inhalable product to generate an aerosol; the substrate is doped with a non-metal element, along a depth direction with a radiating surface of the substrate as a starting point; and a distribution density of the non-metal element at a first depth is greater than a distribution density of the non-metal element at a second depth, and the second depth is greater than the first depth.

2 . The heating assembly according to claim 1 , wherein:
an element injection layer and a non-element injection layer are formed in the substrate; the element injection layer comprises a non-metal element injected through ions and a metal element forming the substrate; and the non-element injection layer comprises the metal element forming the substrate.

3 . The heating assembly according to claim 2 , wherein the element injection layer and the non-element injection layer blend with each other at a critical region between the element injection layer and the non-element injection layer.

4 . The heating assembly according to claim 1 , wherein along the depth direction with the radiating surface of the substrate as a starting point, the non-metal element is distributed in the substrate in a decreasing distribution density manner.

5 . The heating assembly according to claim 2 , wherein the non-metal element combines with part of the metal element in the substrate to form a dispersed phase or a superhard phase.

6 . The heating assembly according to claim 1 , wherein the non-metal element comprises one or more of carbon, nitrogen, boron, or phosphorus.

7 . The heating assembly according to claim 1 , wherein the substrate is made of a metallic magnetic body that generates heat in a variable magnetic field.

8 . The heating assembly according to claim 1 , wherein:
the heating assembly further comprises a tapered guide portion; the tapered guide portion is connected to the substrate; and at least part of the substrate and the tapered guide portion are configured to be inserted into the inhalable product.

9 . The heating assembly according to claim 8 , wherein the tapered guide portion is made of metal, and is a solid structure or has a cavity inside.

10 . The heating assembly according to claim 9 , wherein the tapered guide portion is doped with the non-metal element, and distribution of the non-metal element in the substrate is substantially the same as distribution of the non-metal element in the tapered guide portion.

11 . The heating assembly according to claim 1 , wherein the substrate is a tubular structure accommodating at least part of the inhalable product, and the radiating surface is an inner surface of the substrate.

12 . An aerosol generating device, comprising the heating assembly according to claim 1 , and further comprising:
an accommodating cavity configured to accommodate at least part of an inhalable product; a battery assembly electrically connected to the heating assembly, to supply power to heat generating by the heating assembly; and an installation portion located below the accommodating cavity, wherein an end of the substrate is fixed to the installation portion, and another end of the substrate extends upward into the accommodating cavity.

13 . The aerosol generating device according to claim 12 , wherein:
the aerosol generating device further comprises a temperature detector; the heating assembly further comprises a base, the base connecting the substrate to the installation portion; and the temperature detector is connected to the substrate.

14 . The aerosol generating device according to claim 12 , wherein:
the aerosol generating device further comprises a temperature detector; the heating assembly further comprises a base doped with the non-metal element, the base connects the substrate to the installation portion, the base and the substrate are made of the same metallic magnetic body, and distribution of the non-metal element on the base is substantially the same as distribution of the non-metal element on the substrate; and the temperature detector is connected to the base.

15 . The aerosol generating device according to claim 14 , wherein:
the heating assembly comprises an inductance coil arranged at a periphery of the substrate; the aerosol generating device comprises a holder; and the accommodating cavity is located in the holder, the installation portion is fixedly connected to the holder, and the inductance coil is wound in a spiral shape around an outer side of the holder.

16 . The aerosol generating device according to claim 12 , wherein:
the substrate comprises a first section and a second section; at least part of the second section is connected to the installation portion; the second section is exposed to the outside when the first section is inserted into the inhalable product; and the first section is doped with the non-metal element.

17 . The aerosol generating device according to claim 16 , wherein a friction coefficient of a surface of the first section is less than a friction coefficient of a surface of the second section.

Assignees

• Shenzhen First Union Tech Co

Inventors

• Luo Jiamao
• Xu Zhongli
• Li Yonghai

Classifications

• C23C14/48

  Ion implantation · CPC title

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24F40/90

  Arrangements or methods specially adapted for charging batteries thereof · CPC title

• A24F40/57

  Temperature control · CPC title