Temperature control in an aerosol delivery device
US11614720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2019 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Aug 16, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24F40/20
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An aerosol delivery device is provided that includes a power source, a heating element, a switch coupled to and between the power source and the heating element, and processing circuitry coupled to the switch. The processing circuitry outputs a PWM signal during a heating time period to cause the switch to switchably connect and disconnect the output voltage to the heating element to power the heating element. The processing circuitry outputs a pulse of known current to the heating element, and measure voltage across the heating element, between adjacent pulses of the PWM signal. And the processing circuitry calculates the resistance of the heating element based on the known current and the voltage, calculates the temperature of the heating element based on the resistance, and adjusts a duty cycle of the PWM signal when the temperature deviates from a predetermined target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.