Linear gaseous fuel flow controller
US5584467A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1994 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Sep 2, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2521
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid flow control system which can function under a range of input pressures for regulating the flow of fluid as a function of a variable input voltage and having a feedback feature which produces an electrical signal equivalent to the volume of fluid actually flowing from the control system, comprising a pressure balanced valve, a proportional solenoid having a movable shaft responsive to the input voltage and adapted to open the valve, said valve including, a fluid intake chamber having an intake port and a valve port, a fluid discharge chamber having a discharge port, a valve disk and a cooperating valve seat where the valve disk is connected to the shaft of the proportional solenoid so as to open and close the valve, a flexible diaphragm having a centrally disposed piston in contact with the valve disk a pressure equalizing chamber contiguous to the diaphragm, a biasing spring in contact with the piston and exerting a force thereon in a direction toward the valve disk for normally maintaining the valve disk sealed against its valve seat, and a fluid flow measurement device disposed in the discharge port for measuring the fluid flowing from the fluid discharge chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.