Centrifugal separator having a self-powered service readiness indicator
US10357788B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 6, 2017 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Oct 6, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B13/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rotor is mounted in a stationary casing of a centrifugal separator. An electrical rotation sensor with a first electric coil mounted on the rotor and a second electric coil, connectable to a power source and mounted on the casing, is provided. A processor associated with the second coil detects voltage oscillation induced in the second coil when the rotor rotates to calculate and display rotor speed. The first coil is connected in a circuit including electrodes exposed to the interior of the rotor at a predetermined position. The voltage across the second coil changes when the electrodes are contacted by accumulated material in the interior of the rotor. This change is detected to provide an indication that cleaning of the rotor is required. A permanent magnet is mounted on the rotor and causes automatic charging of the battery via the stator coil when the rotor rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.