Diaphragm cell for damping pressure pulsations in a low-pressure region of a piston pump
US10662931B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2016 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Apr 9, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2228/001
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A diaphragm cell for damping pressure pulsations in a low-pressure region of a piston pump has two axially deformable diaphragms that are connected along their radial peripheries and enclose a gas space. The diaphragms each have a central region that extends over no less than 50% of the cross-sectional surface area of the diaphragms. The diaphragms are of undulating shape in the central region, which is curved axially outwards in its radially inner region and in its radially outer region. The diaphragms further include an axially inwardly curved annular region that is arranged between and immediately adjacent to the radially inner region and the radially outer region. An axially-measured amplitude of the wave shape has a predetermined range related to the cross-sectional surface area of the diaphragms when the pressure difference is zero. The pressure difference is a pressure in the gas space minus a pressure outside the gas space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.