Method and apparatus for controlling the flow of process fluids
US5318106A · kind A · utility
Inventors
Key dates
| Filing date | Jan 24, 1992 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Jan 24, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D17/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for coupling a primary loop with a secondary loop for circulating processing fluids therebetween comprising in combination a first connection for the feed line of the primary loop and a second connection for the return line of the primary loop; a third connection for the feed line of the secondary loop and a fourth connection for the return line of the secondary loop; a crossover line coupling the four connections; first valve means for controlling the flow through the primary loop; first sensor means responsive to the flow across the crossover line to control the first valve means; second valve means in the path of flow through the crossover line; second sensor means responsive to the temperature of the process fluid in the secondary loop to control the second valve means; a common controller for the first and second sensor means adapted to control the first and second valve means as a function of the sensed temperature and flow; and a common controller for the first and second sensor means adapted to control the first and second valve means as a function of the sensed flow and temperature with means to limit the extent of opening of one of the valve means a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.