Pump/valve assembly and a cooling circuit containing such an assembly
US7082902B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Dec 20, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2007/146
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump/valve assembly forming part of a circuit for circulating a liquid fluid has a pump and a proportional-control valve unit (2) in series with the pump. The valve unit (2) has a valve (3), an electrical actuator (4) and a position sensor (5) which are fixed to a movable member (3′) sealing the valve (3) for displacement therewith, and control means (6) controlling the actuator (4) according to the position of the movable member (3′) indicated by the sensor (5) and a reference signal. The valve unit (2) is subjected to a procedure indexing the position of the movable member (3′) and setting parameters for the control means (6) at the beginning of each new operating cycle of the assembly, and the pump (1) is rotated at a constant speed selected from a limited number of predetermined speeds at least during part of each operating cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.