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Induction heating assembly for a vapour generating device

專利號
US11516894B2
公開日期
2022-11-29
申請人
JT International S.A.
發(fā)明人
Mark Gill
IPC分類
A24F13/00; H05B6/10; H02J50/10; A24F40/90; A24F40/465; A24F40/57; H01F38/14; H02J7/02; H02J7/00; A24F40/20
技術領域
induction,heating,coil,vapour,susceptor,assembly,charging,source,external,in
地域: Geneva

摘要

An induction heating assembly for a vapour generating device includes a rechargeable power source and an induction coil. The induction coil is arranged to heat, in use, a susceptor and is also arranged to receive, in use, an electromagnetic field generated by an external source to charge the power source.

說明書

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CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/EP2018/073616, filed Sep. 3, 2018, published in English, which claims priority to European Application No. 17189677.2 filed Sep. 6, 2017, the disclosures of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION

The present invention relates to an induction heating assembly for a vapour generating device. Devices which heat, rather than burn, a substance to produce a vapour for inhalation have become popular with consumers in recent years.

Such devices can use one of a number of different approaches to provide heat to the substance. One such approach is a vapour generating device which employs an inductive heating system. In such a device an induction coil (hereinafter also referred to as an inductor) is provided with the device and a susceptor is provided with the vapour generation substance. Electrical energy is provided to the inductor when a user activates the device which in turn creates an electromagnetic field. The susceptor couples with the field and generates heat which is transferred to the substance and vapour is created as the substance is heated.

Such an approach has the potential to provide better control of heating and therefore vapour generation. However, in practice such an approach can result in a relatively bulky device with a large number of components. This can make it expensive to produce and inconvenient to users who expect a simple and compact device.

權利要求

1
The invention claimed is:1. An induction heating assembly for a vapour generating device, the heating assembly comprising:a rechargeable power source; andan induction coil; whereinthe induction coil is arranged to heat, in use, a susceptor and is also arranged to receive, in use, an electromagnetic field generated by an external source to charge the power source.2. The induction heating assembly according to claim 1, further comprising:a rectifier arranged to change a high-frequency alternating current induced in the induction coil by an electromagnetic field generated by the external source into a form suitable for charging the rechargeable power source.3. The induction heating assembly according to claim 2, wherein the rectifier is arranged to change the high-frequency alternating current from the induction coil into a direct current.4. The induction heating assembly according to claim 3, further comprising:an inverter arranged to change a direct current from the power source to an alternating high-frequency current;andan induction controller arranged to be, in use, in electrical connection with the power source, the induction coil, the rectifier, and the inverter such that, in use, the alternating high-frequency current can be selectively supplied to the induction coil and a susceptor can be inductively heated by the induction coil and, in use, a direct current can be selectively supplied to the power source when power is received at the induction coil in the form of an electromagnetic field generated by an external source, to inductively charge the power source.5. The induction heating assembly according to claim 1, wherein the induction coil is substantially cylindrical in shape.6. The induction heating assembly according to claim 4, wherein the inverter and the rectifier are the same member arranged to selectively change a direct current from the power source to an alternating high-frequency current, and to selectively change an alternating high-frequency current from the induction coil to a direct current.7. The induction heating assembly according to claim 1, wherein the assembly is arranged to receive at least a portion of the external source of an electromagnetic field within its volume.8. The induction heating assembly according to claim 1, wherein at least a portion of the assembly is arranged to be, in use, inserted in a volume of the external source of an electromagnetic field.9. A vapour generating device comprising:an induction heating assembly comprising:a rechargeable power source; andan induction coil arranged to heat, in use, a susceptor and is also arranged to receive, in use, an electromagnetic field generated by an external source to charge the power source;a heating compartment arranged to receive a body comprising a vaporisable substance and an induction heatable susceptor;an air inlet arranged to provide air to the heating compartment; andan air outlet in communication with the heating compartment.10. The vapour generating device according to claim 9, wherein the heating compartment is arranged to receive a substantially cylindrical vaporisable article.11. A vapour generating device charging system comprising:the induction heating assembly according to claim 1; anda charging device comprising a charging coil arranged to induce a current in the induction coil of the induction heating assembly by producing an electromagnetic field.12. The vapour generating device charging system according to claim 11, wherein the charging device is substantially cylindrical.13. A method of charging a vapour generating device, the method comprising the steps of:placing a charging device in proximity to an induction heating assembly of the vapour generating device, the induction heating assembly comprising a rechargeable power source and an induction heating coil; andtransferring power from the charging device in the form of an electromagnetic field to the induction heating coil of the heating assembly to supply charge to the rechargeable power source.14. The method according to claim 13, wherein a portion of the charging device is at least partially inserted in a volume of the induction heating assembly.15. The method according to claim 13, wherein a portion of the induction heating assembly is at least partially inserted in a volume of the charging device.16. The induction heating assembly according to claim 1, comprising an induction controller configured to selectively control the induction coil to heat, in use, the susceptor and to receive, in use, the electromagnetic field generated by the external source to charge the power source.17. The induction heating assembly according to claim 1, wherein the external source and the induction heating assembly are separable from one another.18. The method according to claim 13, wherein the vapour generating device comprises:an induction heating assembly comprising:a rechargeable power source; andan induction coil arranged to heat, in use, a susceptor and is also arranged to receive, in use, an electromagnetic field generated by an external source to charge the power source;a heating compartment arranged to receive a body comprising a vaporisable substance and an induction heatable susceptor;an air inlet arranged to provide air to the heating compartment; andan air outlet in communication with the heating compartment.
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