Industrial fluid circuits and method of controlling the industrial fluid circuits using variable speed drives on the fluid pumps of the industrial fluid circuits
US10107283B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 17, 2015 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Jul 5, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85978
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An industrial fluid circulation system and method has at least one fluid circulation circuit in an industrial process, such as an HVAC system. The at least one fluid circulation circuit includes a plurality of pumps, at least two of the pumps connected in parallel to circulate a fluid through the at least one fluid circulation circuit. A separate motor drives each pump and a speed control is used to vary the speed of each motor to thereby vary the pumping capacity of each parallel connected pump. A load detector is provided to sense operating loads on the system, and each operating pump runs at one of: a predetermined equal reduced speed, a predetermined almost equal reduced speed, and a predetermined similar reduced speed, relative to a maximum speed to thereby optimize pump motor power usage in accordance with system operating loads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.