Inductive heating device, aerosol delivery system comprising an inductive heating device, and method of operating same
US10028533B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2015 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Jun 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2206/023
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inductive heating device for heating an aerosol-forming substrate a susceptor includes a device housing, a DC power source for providing a DC supply voltage and a DC current, a power supply electronics, and a cavity in the device housing for accommodating a portion of the aerosol-forming substrate to inductively couple the inductor to the susceptor. The power supply electronics include a microcontroller programmed to determine an apparent ohmic resistance, and from the apparent ohmic resistance the temperature of the susceptor. It is further programmed to monitor changes in the apparent ohmic resistance and to detect a puff when a decrease of the apparent ohmic resistance is determined which is indicative of a temperature decrease of the susceptor during a user inhalation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.