Granted Patent B2

US 12,245,341 · App. 18/325,250 · Granted Mar 4, 2025

Inventors: Hun Il Lim (Seoul, KR); Tae Hun Kim (Yongin-si, KR); Jung Ho Han (Daejeon, KR); Sang Kyu Park (Hwaseong-si, KR)

Assignee: KT&G CORPORATION

H05B3/42A24B15/167A24D1/20A24D3/17A24F15/01A24F40/40A24F40/42A24F40/44A24F40/46A24F40/485A24F40/50A24F40/51A24F40/57A24F40/60A24F40/65A24F40/90A24F40/95F21V3/00F21V5/00G02B19/0009G02B19/0061H05B3/54H05K1/0203H05K1/0277H05K1/148H05K1/181A24F40/10A24F40/20A24F40/30F21Y2115/10H05K2201/012H05K2201/0154H05K2201/10219

Abstract

Claims (28)

1. A heater for an aerosol generating apparatus, the heater being inserted into a cigarette to heat the cigarette for generating an aerosol and comprising:

an electrically insulating substrate having a planar structure;

a first electrically conductive heating element formed along an outer path on the electrically insulating substrate;

a second electrically conductive heating element formed along an inner path on the electrically insulating substrate;

wherein the first electrically conductive heating element and the second electrically conductive heating element are electric resistive elements that are heated by a current flowing through the first electrically conductive heating element and the second electrically conductive heating element, and

wherein the outer path of the first electrically conductive heating element is spaced apart from the inner path of the second electrically conductive heating element by a predetermined distance and is formed substantially outside the inner path on the electrically insulating substrate.

2. The heater of claim 1 , further comprising:

a first connection portion in which the first electrically conductive heating element and the second electrically conductive heating element are electrically connected on the electrically insulating substrate; and

a second connection portion in which the first electrically conductive heating element and the second electrically conductive heating element are electrically connected on the electrically insulating substrate.

3. The heater of claim 2 , wherein the first connection portion and the second connection portion are manufactured as an electrically conductive element identical to the first electrically conductive heating element and the second electrically conductive heating element.

4. The heater of claim 2 , wherein each of the first connection portion and the second connection portion has a greater width than each of the first electrically conductive heating element and the second electrically conductive heating element.

5. The heater of claim 1 , wherein the first electrically conductive heating element is formed to have a greater pattern or shape than the second electrically conductive heating element on the electrically insulating substrate.

6. The heater of claim 1 , wherein at least one of the outer path and the inner path are formed as paths having a pattern of at least one of an angular shape, a curved shape, and an irregular shape.

7. The heater of claim 1 , wherein the electrically insulating substrate corresponds to a green sheet including a ceramic synthetic material, or includes an insulating substrate manufactured using paper, glass, ceramic, anodized metal, coated metal or polyimide.

8. The heater of claim 1 , wherein the first electrically conductive heating element and the second electrically conductive heating element have a thermal coefficient resistance (TCR) value between 1200 ppm/° C. and 1800 ppm/° C.

9. The heater of claim 1 , wherein the first electrically conductive heating element and the second electrically conductive heating element have a resistance value between 0.7Ω and 0.85Ω at a room temperature of 25° C.

10. The heater of claim 1 , wherein a distance between the first electrically conductive heating element and the second electrically conductive heating element formed on the electrically insulating substrate is at least 1.0 mm.

11. The heater of claim 1 , each of the first electrically conductive heating element and the second electrically conductive heating element has a set resistance value depending on at least one of a constituent material, length, width, thickness and pattern of the electric resistive element of each of the first and second electrically conductive heating elements.

12. An aerosol generating apparatus heating a cigarette accommodated in the aerosol generating apparatus to generate an aerosol, the aerosol generating apparatus comprising:

a heater;

a battery for supplying power to the heater; and

a controller configured to control the power supplied from the battery to the heater,

wherein the heater comprises:

an electrically insulating substrate having a planar structure;

a first electrically conductive heating element formed along an outer path on the electrically insulating substrate;

a second electrically conductive heating element formed along an inner path on the electrically insulating substrate;

wherein the first electrically conductive heating element and the second electrically conductive heating element are electric resistive elements that are heated by a current flowing through the first electrically conductive heating element and the second electrically conductive heating element by the power supplied from the battery, and

wherein the outer path of the first electrically conductive heating element is spaced apart from the inner path of the second electrically conductive heating element by a predetermined distance and is formed substantially outside the inner path on the electrically insulating substrate.

Priority Claims (2)

Continuity (3)

References Cited (400)