Heat insulation mechanism suitable for electromagnetic induction-type aerosol generation device and aerosol generation device

Patent metadata

Field	Value
Publication number	US-12302946-B2
Application number	US-202017757012-A
Country	US
Kind code	B2
Filing date	Dec 9, 2020
Priority date	Dec 9, 2019
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

A heat insulation mechanism suitable for an electromagnetic induction-type aerosol generation device and an aerosol generation device are provided. The aerosol generation device comprises a magnetic field generator and a susceptor that are inductively coupled; a heat insulator configured to reduce conduction of heat from the susceptor to the outside, the heat insulator comprising a tube wall, and a central region defined by the tube wall, the tube wall containing a metal or an alloy, and the pressure in the central region being configured to be lower than the pressure outside the heat insulator; and a magnetic field shield, configured to isolate the heat insulator from a varying magnetic field, so as to prevent the heat insulator from being penetrated by the varying magnetic field to generate heat. The aerosol generation device can shield the vacuum heat insulator from the magnetic field as far as possible.

First claim

What is claimed is:

1. An aerosol generation device, configured to heat a smokable material to generate an aerosol, comprising:
a chamber, which is configured to receive a smokable material;
a magnetic field generator, which is configured to generate a varying magnetic field;
a susceptor, which is configured to be penetrated by the varying magnetic field to generate heat, so as to heat the smokable material received in the chamber;
a heat insulator, which is configured to reduce conduction of heat from the susceptor towards a periphery along a radial direction of the chamber, the heat insulator comprising a tube wall, and a central region defined by the tube wall, wherein the tube wall contains a metal or an alloy; and
a magnetic field shield, which is configured to isolate the heat insulator from the varying magnetic field, so as to prevent the heat insulator from being penetrated by the varying magnetic field to generate heat.

2. The aerosol generation device according to claim 1 , wherein the magnetic field shield forms a magnetic field isolation region isolated from the varying magnetic field, and the heat insulator is arranged within the magnetic field isolation region so as to be isolated from the varying magnetic field.

3. The aerosol generation device according to claim 2 , wherein the magnetic field isolation region is a roughly closed space enclosed and formed by the magnetic field shield.

4. The aerosol generation device according to claim 3 , wherein the magnetic field shield comprises a first electromagnetic shielding film and a second electromagnetic shielding film that are arranged in turn from inside to outside along the radial direction of the chamber; and
certain space is reserved between the first electromagnetic shielding film and the second electromagnetic shielding film, thereby forming the magnetic field isolation region.

5. The aerosol generation device according to claim 2 , wherein the heat insulator presents a tubular shape extending along a length direction of the chamber, and a tubular hollow of the heat insulator forms an accommodation space configured to accommodate and hold the magnetic field generator and the susceptor; and
the magnetic field shield at least comprises an electromagnetic shielding film extending along an axial direction of the heat insulator that encloses and forms the accommodation space.

6. The aerosol generation device according to claim 5 , wherein the heat insulator comprises an inner tube wall and an outer tube wall that are arranged in turn from inside to outside along the radial direction, and the central region formed between the inner tube wall and the outer tube wall; and
the electromagnetic shielding film is bonded onto an inner surface of the inner tube wall.

7. The aerosol generation device according to claim 5 , wherein the electromagnetic shielding film has a thickness from 0.06 to 1.0 mm.

8. The aerosol generation device according to claim 3 , wherein the heat insulator presents a tubular shape extending along a length direction of the chamber, and a tubular hollow of the heat insulator forms an accommodation space configured to accommodate and hold the magnetic field generator and the susceptor; and
the magnetic field shield at least comprises an electromagnetic shielding film extending along an axial direction of the heat insulator that encloses and forms the accommodation space.

9. The aerosol generation device according to claim 8 , wherein the heat insulator comprises an inner tube wall and an outer tube wall that are arranged in turn from inside to outside along the radial direction, and the central region formed between the inner tube wall and the outer tube wall; and
the electromagnetic shielding film is bonded onto an inner surface of the inner tube wall.

10. The aerosol generation device according to claim 8 , wherein the electromagnetic shielding film has a thickness from 0.06 to 1.0 mm.

11. The aerosol generation device according to claim 1 , wherein the heat insulator presents a tubular shape extending along a length direction of the chamber, and a tubular hollow of the heat insulator forms an accommodation space configured to accommodate and hold the magnetic field generator and the susceptor; and
the magnetic field shield at least comprises an electromagnetic shielding film extending along an axial direction of the heat insulator that encloses and forms the accommodation space.

12. The aerosol generation device according to claim 11 , wherein the heat insulator comprises an inner tube wall and an outer tube wall that are arranged in turn from inside to outside along the radial direction, and the central region formed between the inner tube wall and the outer tube wall; and
the electromagnetic shielding film is bonded onto an inner surface of the inner tube wall.

13. The aerosol generation device according to claim 11 , wherein the electromagnetic shielding film has a thickness from 0.06 to 1.0 mm.

14. The aerosol generation device according to claim 13 , wherein the electromagnetic shielding film is formed by one or more materials having a frequency of 20˜300 kHz and a relative magnetic conductivity of 80˜660.

15. The aerosol generation device according to claim 1 , wherein the magnetic field shield further comprises a support body, and the electromagnetic shielding film is bonded onto the inner surface of the inner tube wall under the support or holding of the support body.

16. The aerosol generation device according to claim 15 , wherein the support body presents a tubular shape extending along the axial direction of the heat insulator.

17. A heat insulation mechanism for an aerosol generation device, the aerosol generation device comprising a magnetic field generator configured to generate a varying magnetic field, and a susceptor configured to be penetrated by the varying magnetic field to generate heat, wherein the heat insulation mechanism comprises:
an accommodation space, which is configured to accommodate the magnetic field generator and the susceptor;
a heat insulator, which is configured to reduce conduction of heat from the susceptor towards a periphery along a radial direction of the accommodation space, the heat insulator comprising a tube wall, and a central region defined by the tube wall, wherein the tube wall contains a metal or an alloy; and
a magnetic field shield, which is connected to the heat insulator and is configured to isolate the heat insulator from the varying magnetic field, so as to prevent the heat insulator from being penetrated by the varying magnetic field to generate heat.

18. The heat insulation mechanism for the aerosol generation device according to claim 17 , wherein the heat insulator comprises an inner tube wall and an outer tube wall that are arranged in turn from inside to outside along the radial direction of the accommodation space, and the central region formed between the inner tube wall and the outer tube wall;
the magnetic field shield at least comprises a first electromagnetic shielding film bonded onto an inner surface of the inner tube wall;
or, the magnetic field shield at least comprises a first electromagnetic shielding film bonded onto an inner surface of the inner tube wall, and a second electromagnetic shielding film bonded onto an outer surface.

Assignees

• Shenzhen First Union Tech Co

Inventors

• Qi Zuqiang
• Lei baoling
• Luo Jiamao
• Xu Zhongli
• Li Yonghai

Classifications

• H05B6/105

  using a susceptor · CPC title

• F16L59/065

  using vacuum (F16L59/075 takes precedence) · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• H05B6/108

  for heating a fluid · CPC title

• A24F40/465 Primary

  specially adapted for induction heating · CPC title