Global Patent Index - EP 0998645 A1

EP 0998645 A1 20000510 - CONTROL METHOD FOR A CRYOGENIC UNIT

Title (en)

CONTROL METHOD FOR A CRYOGENIC UNIT

Title (de)

STEUERVERFAHREN FÜR EINE KYROGENE ANLAGE

Title (fr)

PROCEDE DE REGULATION POUR UNITE CRYOGENIQUE

Publication

EP 0998645 A1 20000510 (EN)

Application

EP 98934433 A 19980710

Priority

  • US 9814392 W 19980710
  • US 5701397 P 19970711

Abstract (en)

[origin: WO9902916A1] Apparatus and methods for improving efficiency of a temperature conditioning system which employs a cryogenic liquid. A vapor powered ventilation motor (68) is normally powered by vapor from the low pressure end of the evaporation coils (62, 64). However, supplemental vapor (72) is provided at start-up to provide immediate ventilation. In addition, vapor which bleeds off valves is cycled through the vapor powered motor (68) or used to maintain a slight positive pressure when the system is shut down.

IPC 1-7

F17C 9/04; B60H 1/32; F25B 29/00

IPC 8 full level

F17C 9/02 (2006.01); F17C 9/04 (2006.01); F25B 19/00 (2006.01); F25D 3/10 (2006.01); F25D 17/06 (2006.01); F25B 27/00 (2006.01)

CPC (source: EP)

F17C 9/04 (2013.01); F25D 3/10 (2013.01); F25D 17/06 (2013.01); F17C 2205/0332 (2013.01); F17C 2205/0338 (2013.01); F17C 2205/0341 (2013.01); F17C 2221/013 (2013.01); F17C 2221/014 (2013.01); F17C 2221/038 (2013.01); F17C 2223/0161 (2013.01); F17C 2227/0309 (2013.01); F17C 2250/043 (2013.01); F17C 2250/0439 (2013.01); F17C 2250/0631 (2013.01); F17C 2260/032 (2013.01); F17C 2265/032 (2013.01); F17C 2270/0171 (2013.01); F17C 2270/0545 (2013.01); F25B 27/00 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 9902916 A1 19990121; AU 8395198 A 19990208; CA 2295562 A1 19990121; EP 0998645 A1 20000510; EP 0998645 A4 20010110; JP 2001518596 A 20011016

DOCDB simple family (application)

US 9814392 W 19980710; AU 8395198 A 19980710; CA 2295562 A 19980710; EP 98934433 A 19980710; JP 2000502361 A 19980710