EP 3786453 A1 20210303 - APPARATUS AND METHOD
Title (en)
APPARATUS AND METHOD
Title (de)
VORRICHTUNG UND VERFAHREN
Title (fr)
APPAREIL ET PROCÉDÉ
Publication
Application
Priority
EP 19194992 A 20190902
Abstract (en)
The application relates to an apparatus (10) and a method for generation of a partial vacuum within a sealed volume. The apparatus comprises a twin screw compressor (30), having an inlet (8) communicable with a sealed volume and an outlet. The twin screw compressor (30) is operable to accept fluid through the inlet (8), compress the fluid and vent the compressed fluid through the outlet. A valve member (1) is associated with the twin screw compressor (30) and movable to vary the outlet volume, and is actuable automatically in response to an inlet/outlet pressure differential. Advantageously, the apparatus (10) provides a means for automatically controlling the effective inbuilt volume ratio of a screw compressor without requiring a separate valve control system.
IPC 8 full level
F04C 18/16 (2006.01); F04C 25/02 (2006.01); F04C 28/12 (2006.01)
CPC (source: EP)
F04C 18/16 (2013.01); F04C 25/02 (2013.01); F04C 28/12 (2013.01); F04C 2220/10 (2013.01); F04C 2270/215 (2013.01)
Citation (search report)
- [XI] EP 3524818 A1 20190814 - MAEKAWA SEISAKUSHO KK [JP]
- [XI] WO 2013146674 A1 20131003 - KOBE STEEL LTD [JP]
- [X] US 8801395 B2 20140812 - HEIMONEN TIMOTHY KEENE [US]
- [XI] US 6123510 A 20000926 - GREER MARK R [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 19194992 A 20190902