Methods and devices for driving a piezoelectric pump
US11835037B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2019 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Oct 10, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0402
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A voltage driving apparatus for a portable fluid pump comprising a power source arranged to provide a direct current, a DC gain unit electrically connected, in use, to receive a voltage from the power source and output an amplified voltage, and a DC to AC conversion unit arranged, in use, to receive the amplified voltage from the DC gain unit and output a periodic waveform to drive a piezoelectric actuator in the portable fluid pump. The output periodic waveform comprises a first discrete voltage level and a second discrete voltage level. Each period of the waveform comprises the first voltage level for a first length of time and a second voltage level for a second length of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.