# US 2019/0313699 A1 · Aerosol Guiding Device And Aerosol Generating System Comprising Said Aerosol Guiding Device

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- Number: US 2019/0313699 A1
- Document ID: US20190313699A1
- Status: Published application
- Kind: A1
- Application number: 16/453,340
- Filed: 2019-06-26
- Published: 2019-10-17
- Earliest claimed: 2015-02-05
- Assignees: JT International SA
- Applicants: JT International S.A.
- Inventors: Andrew Robert John Rogan
- Web page: https://patentgrep.com/patent/US20190313699A1

## CPC

- A61M 11/001: {Particle size control}
- A24F 40/40: Constructional details, e.g. connection of cartridges and battery parts
- A24F 40/44: Wicks
- A24F 40/485: Valves; Apertures
- A61M 11/04: operated by the vapour pressure of the liquid to be sprayed or atomised {(air-humidification, e.g. "room humidifiers" F24F6/00)}
- A61M 11/042: {electrical}
- A61M 11/06: of the injector type
- A61M 15/06: Inhaling appliances shaped like cigars, cigarettes or pipes
- F22B 1/28: in boilers heated electrically
- H05B 3/06: Heater elements structurally combined with coupling elements or holders
- H05B 3/44: heating conductor arranged within rods or tubes of insulating material
- H05B 6/108: {for heating a fluid}
- A24F 40/10: Devices using liquid inhalable precursors
- A61M 11/005: {using ultrasonics (spraying or atomising liquids using ultrasonic vibrations in general B05B17/06)}
- A61M 2205/127: with provisions for heating or cooling
- A61M 2205/3331: Pressure; Flow
- A61M 2205/3633: thermally insulated
- A61M 2205/3653: by Joule effect, i.e. electric resistance
- A61M 2205/8206: battery-operated
- A61M 2205/8212: with means or measures taken for minimising energy consumption
- A61M 2206/14: Static flow deviators in tubes disturbing laminar flow in tubes, e.g. archimedes screws
- A61M 2206/20: having means for promoting or enhancing the flow, actively or passively
- A61M 2207/00: Methods of manufacture, assembly or production
- H05B 2203/014: Heaters using resistive wires or cables not provided for in H05B3/54
- H05B 2203/021: Heaters specially adapted for heating liquids
- H05B 2203/022: Heaters specially adapted for heating gaseous material
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)
- F22B: METHODS OF STEAM GENERATION; STEAM BOILERS
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

There is provided an aerosol generating system, the system comprising: aerosol generating means; aerosol delivery means; and an aerosol guiding device. The aerosol guiding device comprises a chamber having an air inlet and an air outlet and the aerosol delivery means is configured such that aerosol is introduced from the aerosol generating means into the chamber in use. An airflow route is defined from the air inlet to the air outlet so as to convey the aerosol to the air outlet, and the relative dimensions of the air inlet and the air outlet are selected to provide pressure control means for controlling the pressure differential between the air inlet and the air outlet. There is also provided an aerosol guiding device for use in an aerosol generating system, the device comprising: a chamber having an air inlet and an air outlet.

## Claims

### Claim 1

(canceled)

### Claim 2

An aerosol generating system, the system comprising:
aerosol generating means;
aerosol delivery means; and
an aerosol guiding device,
wherein the aerosol guiding device comprises a chamber having an air inlet and an air outlet, the aerosol delivery means being configured such that aerosol is introduced from the aerosol generating means into the chamber in use, wherein an airflow route is defined from the air inlet to the air outlet, and wherein the relative dimensions of the air inlet and the air outlet are selected to provide pressure control means for controlling the pressure differential between the air inlet and the air outlet,
wherein the aerosol generating means comprises a heater, wherein the heater comprises any one of a ceramic, a coil of wire, inductive heating means, ultrasonic heating means and/or piezoelectric heating means.

### Claim 3 (depends on 2)

The system according to claim 2, wherein the air inlet and the air outlet are of the same dimensions, or wherein the air inlet has smaller dimensions than the air outlet, or wherein the air inlet has larger dimensions than the air outlet.

### Claim 4 (depends on 2)

The system according to claim 2, wherein the chamber comprises an upstream portion that tapers inwardly from the air inlet and/or a downstream portion that tapers inwardly from the air outlet.

### Claim 5 (depends on 4)

The system according to claim 4, wherein a taper angle of an upstream portion of the chamber is between 20 and 40 degrees relative to the longitudinal axis of the chamber.

### Claim 6 (depends on 4)

The system according to claim 4, wherein a taper angle of an upstream portion of the chamber is between 25 and 35 degrees relative to the longitudinal axis of the chamber.

### Claim 7 (depends on 4)

The system according to claim 4, wherein a taper angle of the downstream portion of the chamber is between 3 and 7 degrees relative to the longitudinal axis of the chamber.

### Claim 8 (depends on 4)

The system according to claim 4, wherein a taper angle of the downstream portion of the chamber is between 4 and 6 degrees relative to the longitudinal axis of the chamber.

### Claim 9 (depends on 2)

The system according to claim 2, wherein the pressure control means is configured to provide a pressure differential between the air inlet and the air outlet of between 75 and 110 mmWC in use.

### Claim 10 (depends on 2)

The system according to claim 2, wherein the aerosol guiding device is insertable and removable from the aerosol generating system.

### Claim 11 (depends on 2)

The system according to claim 2, wherein the aerosol generating means is located outside the device and/or in close proximity to a narrowest part of the chamber.

### Claim 12 (depends on 2)

The system according to claim 2, wherein the aerosol generating means further comprises a wick that is received by the chamber and the wick is in communication with a liquid reservoir.

### Claim 13

An aerosol guiding device for use in an aerosol generating system, the device comprising:
a chamber having an air inlet and an air outlet;
wherein aerosol is introduced from an aerosol generating means into the chamber in use,
wherein an airflow route is defined from the air inlet to the air outlet so as to convey the aerosol to the air outlet,
and wherein the relative dimensions of the air inlet and the air outlet are selected to provide pressure control means for controlling the pressure differential between the air inlet and the air outlet,
wherein the aerosol generating means comprises a heater, wherein the heater comprises any one of a ceramic, a coil of wire, inductive heating means, ultrasonic heating means and/or piezoelectric heating means.

### Claim 14 (depends on 13)

The device according to claim 13, wherein the air inlet and the air outlet are of the same dimensions, or wherein the air inlet has smaller dimensions than the air outlet, or wherein the air inlet has larger dimensions than the air outlet.

### Claim 15 (depends on 13)

The device according to claim 13, wherein the chamber comprises an upstream portion that tapers inwardly from the air inlet and/or a downstream portion that tapers inwardly from the air outlet.

### Claim 16 (depends on 15)

The device according to claim 15, wherein a taper angle of an upstream portion of the chamber is between 20 and 40 degrees relative to the longitudinal axis of the chamber.

### Claim 17 (depends on 15)

The device according to claim 15, wherein a taper angle of an upstream portion of the chamber is between 25 and 35 degrees relative to the longitudinal axis of the chamber.

### Claim 18 (depends on 15)

The device according to claim 15, wherein a taper angle of the downstream portion of the chamber is between 3 and 7 degrees relative to the longitudinal axis of the chamber.

### Claim 19 (depends on 15)

The device according to claim 15, wherein a taper angle of the downstream portion of the chamber is between 4 and 6 degrees relative to the longitudinal axis of the chamber.

### Claim 20 (depends on 13)

The device according to claim 13, wherein the pressure control means is configured to provide a pressure differential between the air inlet and the air outlet of between 75 and 110 mmWC in use.