Aerosol-generating device with an induction heater with a conical induction coil
An aerosol-generating device is provided, including a housing having a chamber configured to receive at least a portion of an aerosol-generating article, the chamber including at least one solid elongate heating element extending into the chamber in a longitudinal direction of the chamber and being configured to penetrate an aerosol-generating article received in the chamber, the heating element having a conical shape and being tapered at a free end thereof; an induction coil disposed around at least a portion of the chamber and having a conical shape; and a power supply and a controller connected to the induction coil and being configured to provide an alternating electric current to the induction coil such that the inductor coil generates a fluctuating magnetic field for heating the heating element disposed in the chamber.
1. An aerosol-generating device, comprising:
a housing having a chamber configured to receive at least a portion of an aerosol-generating article, wherein the chamber comprises at least one heating element;
an induction coil disposed around at least a portion of the chamber and having a conical shape; and
a power supply and a controller connected to the induction coil and configured to provide an alternating electric current to the induction coil such that the induction coil generates a fluctuating magnetic field to heat the heating element located in the chamber, wherein the heating element is a hollow heating element comprising an internal cavity, and wherein the heating element is configured to receive the aerosol-generating article received in the chamber in the internal cavity.
2. The aerosol-generating device according to claim 1 , wherein the heating element has a conical shape.
3. The aerosol-generating device according to claim 2 , wherein the hollow heating element has a slight bend or curved surface configured to facilitate insertion of the aerosol-generating article.
4. The aerosol-generating device according to claim 2 , wherein an apex angle of the conically shaped induction coil is essentially the same as an apex angle of the conically shaped heating element.
5. The aerosol-generating device according to claim 2 , wherein an apex angle of the conically shaped induction coil differs from an apex angle of the conically shaped heating element.
6. The aerosol-generating device according to claim 1 , wherein the housing comprises at least one air inlet at a side of the housing.
7. The aerosol-generating device according to claim 1 , wherein the hollow heating element has a subsequently decreasing diameter as viewed from a proximal end of the device.
8. The aerosol-generating device according to claim 1 , wherein the induction coil has a subsequently decreasing diameter as viewed from a proximal end of the device.
9. The aerosol-generating device according to claim 1 , wherein the hollow heating element has an elliptical cross-section.
10. The aerosol-generating device according to claim 1 , wherein the chamber comprises two or more heating elements.
11. The aerosol-generating device according to claim 10 , wherein the heating elements are made from different materials.
12. The aerosol-generating device according to claim 10 , wherein the chamber comprises multiple hollow heating elements having a successively decreasing diameter.
13. The aerosol-generating device according to claim 1 , wherein a wall of the internal cavity is formed by the heating element.
14. An aerosol-generating system, comprising:
an aerosol-generating device according to claim 1 ; and
an aerosol-generating article having an aerosol-generating substrate and configured for use with the aerosol-generating device.
15. The aerosol-generating system according to claim 14 , wherein the heating element is shaped such that the aerosol-generating article is sandwiched in a press fit in the internal cavity of the heating element, when the aerosol-generating article is received in the chamber.