Compressor system and method and control for same
US6471486B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2000 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Jun 12, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2207/703
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electronic control system is disclosed to control and to prevent damage to a standalone or a network of oil free, two stage compressor packages. The electronic control system uses pressure and temperature sensors to detect actual shutdown conditions or predict shutdown conditions based on the operating state of the compressor package and the current temperatures or pressures of the air at strategic locations in the compressor package. It has been determined through experimentation that, if the pressure at the inlet of the stage two compressor is less than the discharge pressure of the stage two compressor by more than an allowable value, then a high temperature condition will occur in the stage two compressor and cause the compressor to seize. It has also been determined the pressure differential occurs first in this situation and that the electronic control system can predict the failure based on the pressure differential data and to shut the compressors down before the stage two compressor failure occurs. The electronic control system then records the shutdown event in an area of nonvolatile memory and displays the reason for the shutdown on a LCD display visible to the compre…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.