Thermal bypass valve with pressure relief capability
US8141790B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2008 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Jan 26, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6579
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A by-pass valve for a heat exchanger circuit that includes a cooler has a chamber and ports for flow of fluid into and out of this chamber. A thermally sensitive actuator is mounted in the chamber and can extend or retract in dependence on its body temperature as influenced by temperature of the fluid. A by-pass valve seat is arranged in a valve housing along with a by-pass valve member movable by the actuator into or out of engagement with the seat. A relief valve is mounted in the chamber and has a relief valve member movable between closed and open positions in order to close or open pressure relief ports. This relief valve member is biased towards the closed position. Excessive pressure build up in an end section of the chamber causes the relief valve member to move to its open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.