Piezoelectric valve and method of manufacturing the same
US9423044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Nov 28, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86622
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A piezoelectric valve operated by voltage and a method of manufacturing the piezoelectric valve. The piezoelectric valve includes: a valve body; a valve unit; a plate-shaped piezoelectric element; an insulation stick for insulating the piezoelectric element; an adjustment bolt attached to the valve body with the insulation stick fitted over the bolt; an elastic body elastically supporting the insulation stick; an adjustment nut tightened to the adjustment bolt for moving along the bolt by rotation of the bolt so as to displace the insulation stick and an end of the piezoelectric element by pushing the insulation stick; and an adjuster for moving the adjustment nut along the adjustment bolt by a pivoting of the adjustment bolt, thereby adjusting a pushing force of the insulation stick. The piezoelectric valve can reduce economic loss in manufactured valves because the valve flow rate can be adjusted even after assembling the valve body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.