EP 0705907 B1 19991110 - Process and installation for cooling workpieces with gases
Title (en)
Process and installation for cooling workpieces with gases
Title (de)
Verfahren und Vorrichtung zum Abkühlen von Werkstücken durch Gase
Title (fr)
Procédé et installation pour le refroidissement au gaz de pièces à usiner
Publication
Application
Priority
DE 4435862 A 19941007
Abstract (en)
[origin: DE4435862C1] Cooling (esp. quenching) of workpieces by gases takes place in a heat treatment furnace (1) in which the circulating gases are cooled down on cooling surfaces (12) of at least one heat exchanger (11) located in the furnace and joined by piping (13a,13b) to an external heat extraction unit (17) with a liquid cooling medium. The storage volume (20) for a hydrous cooling medium in this unit is kept under a reduced pressure so that at least a part of the hydrous phase of the volume (20) is evaporated for extraction of heat from the heat exchanger (11). The tank (18) for the storage volume is connected to a vacuum pump (24).
IPC 1-7
IPC 8 full level
C21D 1/613 (2006.01); C21D 1/767 (2006.01); F27D 9/00 (2006.01); C21D 1/773 (2006.01)
CPC (source: EP)
C21D 1/613 (2013.01); C21D 1/767 (2013.01); F27D 9/00 (2013.01); C21D 1/773 (2013.01); F27D 2009/0072 (2013.01); F27D 2009/0089 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 4435862 C1 19950824; DE 59507217 D1 19991216; EP 0705907 A1 19960410; EP 0705907 B1 19991110
DOCDB simple family (application)
DE 4435862 A 19941007; DE 59507217 T 19950912; EP 95114288 A 19950912