Aersol generating device including heater and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2025040604-A1
Application number	US-202318276992-A
Country	US
Kind code	A1
Filing date	May 4, 2023
Priority date	May 23, 2022
Publication date	Feb 6, 2025
Grant date	—

Abstract

According to various embodiments, an aerosol generating device for generating an aerosol by heating a cigarette includes a pipe including an opening into which the cigarette is inserted, a first surface enclosing at least a partial region of an outer circumferential surface of the cigarette when the cigarette is inserted, and a second surface opposite to the first surface, a heater provided on the second surface of the pipe and configured to heat the pipe, and an insulating layer configured to provide electrical insulation and provided between the heater and the second surface of the pipe, wherein the heater includes a heating wire printed directly on the second surface and the insulating layer in a pattern enclosing at least a partial region of the second surface of the pipe.

First claim

1 . An aerosol generating device for generating an aerosol by heating a cigarette, the aerosol generating device comprising:
a pipe comprising an opening into which the cigarette is inserted, a first surface enclosing at least a partial region of an outer circumferential surface of the cigarette when the cigarette is inserted, and a second surface opposite to the first surface; a heater provided on the second surface of the pipe and configured to heat the pipe; and an insulating layer configured to provide electrical insulation and arranged between the heater and the second surface of the pipe, wherein the heater comprises a heating wire printed directly on at least one of the second surface and the insulating layer in a pattern enclosing at least a partial region of the second surface of the pipe.

2 . The aerosol generating device of claim 1 , wherein
the aerosol generating device comprises a connector configured to supply power to the heater, and the heater comprises a plurality of terminals comprising a first terminal and a second terminal each connected to the connector.

3 . The aerosol generating device of claim 2 , wherein the heating wire comprises one end portion connected to the first terminal and another end portion connected to the second terminal, the other end portion being opposite to the one end portion.

4 . The aerosol generating device of claim 2 , wherein
the aerosol generating device comprises a power supply unit connected to the connector and configured to supply power to the heater, and the connector comprises: a first connector terminal connected to the first terminal; a second connector terminal connected to the second terminal; a third connector terminal connected to the power supply unit; and a body made of a flexible printed circuit board (FPCB) and extending from the third connector terminal to the first connector terminal and the second connector terminal.

5 . The aerosol generating device of claim 4 , wherein the body of the connector extends toward the first connector terminal, the second connector terminal, and the third connector terminal from a center so as to form a Y-shape.

6 . The aerosol generating device of claim 1 , wherein the aerosol generating device comprises a coating layer deposited on the second surface of the pipe and the heating wire.

7 . The aerosol generating device of claim 1 , wherein the insulating layer is stacked on substantially an entire region of the second surface of the pipe.

8 . The aerosol generating device of claim 1 , wherein the insulating layer is stacked on a partial region of the second surface of the pipe, the partial region corresponding to the pattern in which the heating wire is printed.

9 . The aerosol generating device of claim 1 , wherein the pipe comprises, on the second surface, a groove inwardly formed to correspond to the pattern in which the heating wire is printed.

10 . The aerosol generating device of claim 9 , wherein the insulating layer and the heating wire are placed in the groove on the second surface of the pipe.

11 . A method of manufacturing an aerosol generating device, the method comprising:
placing a pipe comprising an opening, an inner surface, and an outer surface opposite to the inner surface; stacking an insulating layer on the outer surface of the pipe; and printing a heating wire on the insulating layer, wherein the printing of the heating wire comprises printing the heating wire directly on at least one of the outer surface and the insulating layer in a pattern enclosing at least a partial region of the second surface of the pipe.

12 . The method of claim 11 , wherein the stacking of the insulating layer comprises stacking the insulating layer on substantially an entire region of the outer surface of the pipe.

13 . The method of claim 11 , wherein the stacking of the insulating layer comprises stacking the insulating layer on a partial region of the outer surface of the pipe, the region corresponding to the pattern in which the heating wire is printed.

14 . The method of claim 11 , comprising:
before the placing of the pipe, forming, on the outer surface of the pipe, a groove inwardly formed to correspond to the pattern in which the heating wire is printed.

15 . The method of claim 11 , comprising:
after the printing of the heating wire, depositing a coating layer on the outer surface of the pipe and the heating wire.

Assignees

• Kt & G Corp

Inventors

• Lee Wonkyeong
• Kim Min Kyu
• Sunwoo Paul Joon

Classifications

• H05B3/46

  heating conductor mounted on insulating base · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24F40/70

  Manufacture · CPC title

• H05B2203/021

  Heaters specially adapted for heating liquids · CPC title

• H05B3/141

  Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds · CPC title