Heater for aerosol-generating device with connectors
The aerosol-generating device includes a housing, and a power supply configured to supply electrical power to a heating element by way of a transformer assembly within the housing. The transformer assembly includes a magnetic flux guide, a primary circuit including a primary winding extending around a first portion of the magnetic flux guide and electrically connected to the power supply, and a secondary circuit including a secondary winding inductively coupled to the primary winding and extending around a second portion of the magnetic flux guide. The number of turns in the primary winding is greater than the number of turns in the secondary winding. The secondary circuit includes at least two electrical contacts configured to form an electrical connection with the heating element.
1. An aerosol-generating device comprising:
a housing;
a heating element; and
a power supply configured to supply electrical power to the heating element by way of a transformer assembly within the housing, wherein the transformer assembly includes,
a magnetic flux guide;
a primary circuit including a primary winding extending around a first portion of the magnetic flux guide and electrically connected to the power supply; and
a secondary circuit including a secondary winding inductively coupled to the primary winding and extending around a second portion of the magnetic flux guide, the secondary winding comprising at least two electrical contact blades and an electrically conductive track electrically connecting the electrical contact blades;
wherein a number of turns in the primary winding is greater than a number of turns in the secondary winding; and
wherein the at least two electrical contact blades are configured to form an electrical connection with the heating element.
2. The aerosol-generating device of claim 1 , wherein the heating element is integral to the at least two electrical contact blades of the secondary circuit.
3. The aerosol-generating device of claim 2 , further comprising:
a storage portion configured to contain an aerosol-forming substrate, and
wherein the heating element is arranged to heat the aerosol-forming substrate.
4. The aerosol-generating device of claim 1 , wherein the housing has a first portion configured to connect to a removable cartridge including the heating element, and
wherein the at least two electrical contact blades of the first portion are configured to form the electrical connection with the heating element when the removable cartridge is connected to the aerosol-generating device.
5. The aerosol-generating device of claim 4 , wherein the removable cartridge includes a storage portion configured to contain an aerosol-forming substrate, and
wherein the heating element is arranged to heat the aerosol-forming substrate.
6. The aerosol-generating device of claim 4 , wherein at least a portion of each of the at least two electrical contact blades extends from the first portion of the housing of the aerosol-generating device.
7. The aerosol-generating device of claim 4 , wherein the at least two electrical contact blades are configured to directly contact the heating element when the removable cartridge is connected to the aerosol-generating device.
8. The aerosol-generating device of claim 4 , wherein, when the removable cartridge is connected to the aerosol-generating device, the heating element forms an electrically conductive bridge between the at least two electrical contact blades to complete the secondary circuit.
9. The aerosol-generating device of claim 1 , wherein each of the at least two electrical contact blades has a pointed leading edge configured to form the electrical connection with the heating element.
10. The aerosol-generating device of claim 1 , wherein each of the at least two electrical contact blades includes tungsten.
11. The aerosol-generating device of claim 1 , wherein the magnetic flux guide includes a looped magnetic core.
12. The aerosol-generating device of claim 11 , wherein the first portion and the second portion of the magnetic flux guide are located on respectively opposing sides of the looped magnetic core.
13. The aerosol-generating device of claim 1 , wherein the secondary winding includes a single turn.
14. The aerosol-generating device of claim 1 , wherein the heating element is a flat electrically conductive and fluid permeable heating element.
15. The aerosol-generating device of claim 1 , wherein the number of turns in the primary winding is at least two times greater than the number of turns in the secondary winding.