Temperature controlled aerosol supply device

Patent metadata

Field	Value
Publication number	US-12178259-B2
Application number	US-202117495538-A
Country	US
Kind code	B2
Filing date	Oct 6, 2021
Priority date	Apr 9, 2019
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

An aerosol supply device includes: an accommodating part (cartridge) configured to accommodate a liquid; an atomization unit having a storing part to store the liquid, the atomization unit being configured to generate an aerosol by atomizing the liquid; and a temperature control part configured to control the temperature of the liquid at a given location between the accommodating part (cartridge) and the storing part.

First claim

The invention claimed is:

1. An aerosol supply device comprising:
an accommodating part configured to accommodate a liquid;
an atomization unit having a storing part to store the liquid supplied from the accommodating part, the atomization unit being configured to generate an aerosol by atomizing the liquid stored in the storing part;
a temperature control part configured to control a temperature of the liquid at a given location between the accommodating part and the storing part; and
a housing provided on an outside of the aerosol supply device to surround at least the accommodating part,
wherein the temperature control part includes an external-heat conduction part having thermal conductivity, the external-heat conduction part being connected to the accommodating part and to an outer surface of the housing.

2. The aerosol supply device according to claim 1 , wherein the temperature control part includes a cooling part configured to absorb heat at a given location between the accommodating part and the storing part.

3. The aerosol supply device according to claim 2 , wherein the temperature control part includes a heating part configured to release heat at a given location between the accommodating part and the storing part.

4. The aerosol supply device according to claim 3 , wherein the aerosol supply device is configured to supply the aerosol by atomizing the liquid by a surface acoustic wave,
wherein the atomization unit includes
a piezoelectric substrate having a piezoelectric element, the piezoelectric substrate being configured to vibrate the liquid to form the aerosol, and
a comb-shaped electrode configured to, in response to receiving supply of electric power, generate a surface acoustic wave on the piezoelectric substrate, and

wherein the cooling part or the heating part is positioned to provide cooling or heating to the piezoelectric substrate.

5. The aerosol supply device according to claim 1 , wherein the aerosol supply device is configured to supply the aerosol by atomizing the liquid by vibration,
wherein the atomization unit includes
a vibrating element configured to vibrate the liquid to form the aerosol, and
a vibration source configured to, in response to receiving supply of electric power, vibrate the vibrating element,

wherein the aerosol supply device further includes an element-heat conduction part having thermal conductivity, the element-heat conduction part being connected to the vibrating element and to the accommodating part, and
wherein the temperature control part includes the vibrating element, the vibration source, and the element-heat conduction part.

6. The aerosol supply device according to claim 5 , wherein the aerosol supply device is configured to supply the aerosol by atomizing the liquid by a surface acoustic wave,
wherein the vibrating element is a piezoelectric substrate having a piezoelectric element, and
wherein the vibration source is a comb-shaped electrode configured to generate a surface acoustic wave on the piezoelectric substrate.

7. The aerosol supply device according to claim 1 , wherein the aerosol supply device is configured to supply the aerosol by atomizing the liquid by vibration,
wherein the atomization unit includes
a vibrating element configured to vibrate the liquid to form the aerosol, and
a vibration source configured to, in response to receiving supply of electric power, vibrate the vibrating element,

wherein the aerosol supply device further includes a controller configured to control the electric power to be supplied to the vibration source, and
wherein the controller is configured to,
when the liquid is at a first temperature, supply a first electric power as the electric power,
when the liquid is at a second temperature lower than the first temperature, supply a second electric power greater than the first electric power as the electric power, and
when the liquid is at a third temperature higher than the first temperature, supply a third electric power less than the first electric power as the electric power.

8. The aerosol supply device according to claim 1 , wherein the temperature control part includes a heating part configured to release heat at a given location between the accommodating part and the storing part.

9. The aerosol supply device according to claim 1 , wherein the temperature control part includes a Peltier element.

10. The aerosol supply device according to claim 1 , wherein a heat insulation structure having a lower thermal conductivity than the accommodating part is formed by a vacuum area between an inner layer and an outer layer of the housing.

11. The aerosol supply device according to claim 1 , wherein the external-heat conduction part has a first section connected to the accommodating part, a second section contacting an outer surface of the housing and a third section extending through the housing and connected to the first section and the second section.

12. The aerosol supply device according to claim 1 , further comprising:
a pump capable of supplying the liquid to the atomization unit;
a controller configured to control electric power to be supplied to the pump; and
a temperature sensor configured to detect a temperature around the accommodating part,
wherein the pump is a syringe pump capable of pulling back the liquid toward the accommodating part from the atomization unit, and
wherein the controller is configured to, when a temperature of the liquid detected by the temperature sensor is greater than or equal to a predetermined temperature or less than or equal to a predetermined temperature, control the pump to pull back the liquid toward the accommodating part from the atomization unit or to push out the liquid toward the atomization unit from the accommodating part.

Assignees

• Japan Tobacco Inc

Inventors

• Inagaki Michihiro
• Abe Yuki
• Wakamatsu Miki
• Suganuma Tatsuya

Classifications

• B05B17/0676

  Feeding means · CPC title

• A24F40/51

  Arrangement of sensors · CPC title

• A24F40/46

  Shape or structure of electric heating means · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24F40/48

  Fluid transfer means, e.g. pumps · CPC title