Fluid sprayer employing piezoelectric pump
US7219848B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Jul 27, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B17/0607
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrically-powered fluid sprayer employs a piezoelectric fluid pump that includes an inlet port, an outlet port, a pump chamber, and a piezoelectric element that is deformed and displaced by electrical signals supplied thereto to vary the volume of the pump chamber. Such displacement pumps fluid into the inlet port and into the pump chamber and discharges fluid from the pump chamber out the outlet port. The inlet port is in fluid-communication with a fluid reservoir. Spin mechanics may be disposed downstream from the outlet port of the fluid pump and upstream from the discharge nozzle. The piezoelectric fluid sprayer may be extended to include a dual chamber piezoelectric pump that pumps different fluids (e.g., a liquid and air). The output of the dual chamber pump is mixed in a manifold and supplied downstream to the discharge nozzle. Spin mechanics may be employed in the fluid stream upstream from the discharge nozzle after the mixing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.