Pressure relief valve for pressure equalization between a closed space and the surrounding atmosphere
US5060688A · kind A · utility
Inventor
Key dates
| Filing date | Jul 25, 1990 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Jul 25, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/774
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pressure relief valve for pressure equalization between a closed space and the surrounding atmosphere comprises a valve housing (1) with an upwardly facing blow-off opening (11) in which a conical valve seat (13) is formed. A drop-shaped body (14) arranged in the blow-off opening (11) is formed on its underside with a conical valve surface (15) co-operating with the valve seat (13). The drop-shaped body is connected with a lifting disc (21) which has a larger area than the valve seat (13) and is surrounded by a free passage slot (22). By suitable dimensioning, advantageous characteristics can be obtained for pressure and blow-off velocity as functions of the blow-off quantity, and the blow-off will always take place in the form of a jet which by means of the drop-shaped body (14) is directed vertically upwards at high velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.