Porous body, atomizer and electronic atomization device

Patent metadata

Field	Value
Publication number	US-2025064122-A1
Application number	US-202218725682-A
Country	US
Kind code	A1
Filing date	Dec 29, 2022
Priority date	Dec 31, 2021
Publication date	Feb 27, 2025
Grant date	—

Abstract

A porous body, an atomizer, and an electronic atomization device are provided. The atomizer includes: a liquid storage cavity for storing a liquid substrate; a porous body in fluid communication with the liquid storage cavity to receive the liquid substrate; and a heating element bonded to the porous body to heat at least part of the liquid substrate in the porous body to generate an aerosol. A volume of micropores in the porous body having a pore size greater than 30 μm accounts for 40% or more of a volume of all micropores in the porous body.

First claim

1 . An atomizer comprising:
a liquid storage cavity, configured to store a liquid substrate; a porous body in fluid communication with the liquid storage cavity to receive the liquid substrate; and a heating element, bonded to the porous body to heat at least part of the liquid substrate in the porous body to generate an aerosol, wherein a volume of micropores in the porous body having a pore size greater than 30 m accounts for 40% or more of a volume of all micropores in the porous body.

2 . The atomizer according to claim 1 , wherein an average pore size of the micropores in the porous body is between 35 μm and 70 μm.

3 . The atomizer according to claim 1 , wherein the pore size of the micropores in the porous body is in a range of 1 μm to 300 μm.

4 . The atomizer according to claim 1 , wherein a volume of the micropores in the porous body having the pore size between 30 μm and 65 μm accounts for 50% or more of the volume of all of the micropores in the porous body.

5 . The atomizer according to claim 1 , wherein a volume of the micropores in the porous body having the pore size between 30 μm and 100 μm accounts for 60% or more of the volume of all of the micropores in the porous body.

6 . The atomizer according to claim 1 , wherein a volume of the micropores in the porous body having the pore size greater than 70 μm accounts for 15% or more of the volume of all of the micropores in the porous body.

7 . The atomizer according to claim 1 , wherein a volume of the micropores in the porous body having the pore size greater than 100 μm accounts for 2% to 10% of the volume of all of the micropores in the porous body.

8 . The atomizer according to claim 1 , wherein a volume of the micropores in the porous body having the pore size less than 30 μm accounts for 30% or fewer of the volume of all of the micropores in the porous body.

9 . The atomizer according to claim 1 , wherein a volume of the micropores in the porous body having the pore size between 10 μm and 30 μm accounts for 5% to 20% of the volume of all of the micropores in the porous body.

10 . The atomizer according to claim 1 , wherein a volume of the micropores in the porous body having the pore size less than 10 μm accounts for 5% or fewer of the volume of all of the micropores in the porous body.

11 . The atomizer according to claim 1 , wherein a porosity of the porous body is in a range of 35% to 75%.

12 . The atomizer according to claim 1 , wherein a water absorption rate of the porous body is in a range of 30% to 70%.

13 . The atomizer according to claim 1 , wherein a proportion of substantially spherical micropores in the porous body to all of the micropores is not less than 30%.

14 . (canceled)

15 . The atomizer according to claim 1 , wherein the porous body is a rigid porous ceramic body.

16 . The atomizer according to claim 1 , wherein the heating element is conductive traces printed or deposited on the porous body.

17 . The atomizer according to claim 1 , wherein
the porous body is provided with a flat atomization surface, and the heating element is a heating element bonded to a plane on the atomization surface; and an extension dimension of the heating element along a length direction of the atomization surface is greater than 75% of a length dimension of the atomization surface.

18 . The atomizer according to claim 1 , wherein
the porous body further comprises a liquid channel extending through the porous body along a length direction; and at least part of an inner surface of the liquid channel is configured as a liquid absorbing surface in fluid communication with the liquid storage cavity for absorbing the liquid substrate.

19 . The atomizer according to claim 1 , wherein
the porous body is provided with a first surface and a second surface opposite to each other; and the first surface is configured as a liquid absorbing surface in fluid communication with the liquid storage cavity for absorbing the liquid substrate, the second surface is configured as an atomization surface, the heating element is bonded to the second surface, and a distance between the first surface and the second surface is between 1 mm and 5 mm.

20 . An electronic atomization device comprising:
an atomizer configured to atomize a liquid substrate to generate an aerosol; and a power supply mechanism configured to supply power to the atomizer, wherein the atomizer comprises the atomizer according to claim 1 .

21 . A porous body, applied to an atomizer, wherein a volume of micropores in the porous body having a pore size greater than 30 μm accounts for 40% or more of a volume of all micropores in the porous body.

Assignees

• Shenzhen First Union Tech Co

Inventors

• Chen Ming
• Lei baoling
• Xu Zhongli
• Li Yonghai

Classifications

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• A24F40/46

  Shape or structure of electric heating means · CPC title

• A24F40/10 Primary

  Devices using liquid inhalable precursors · CPC title

• C04B38/068

  Carbonaceous materials, e.g. coal, carbon, graphite, hydrocarbons · CPC title

• A24F40/44 Primary

  Wicks · CPC title