Method and apparatus for shutting off a compressor when it rotates in reverse direction
US4969801A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Nov 6, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid compression system includes a fluid compression device which pressurizes fluid. A pressure sensor senses pressure generated by the compression device. A control device indicates operating parameters and functions of the compression device, graphically displays the parameters and functions, sets limits of the parameters and controls the compression device in response to any of the parameters reaching a preset level of a corresponding function. A reverse rotation sensor determines when the compression device is operating in an incorrect direction by the initial pressure sensed by the pressure sensor after startup of the compression device, and in response, shuts off the compression device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.