EP 0583692 A1 19940223 - Freezer.
Title (en)
Freezer.
Title (de)
Gefriereinrichtung.
Title (fr)
Congélateur.
Publication
Application
Priority
GB 9217189 A 19920813
Abstract (en)
A control system for a tunnel freezer (1) comprises an oxygen sensor (310) mounted in an exhaust duct (9) and arranged to control the speed of a fan (8). The temperature in the tunnel (4) is determined by controlling the flow of liquid nitrogen through inlet pipe (5) via a control valve (308) which is controlled in response to the signal from a temperature sensor (301). <IMAGE>
IPC 1-7
IPC 8 full level
F25D 3/11 (2006.01); F25D 29/00 (2006.01)
CPC (source: EP)
F25D 3/11 (2013.01); F25D 29/001 (2013.01)
Citation (search report)
- [YA] US 4627244 A 19861209 - WILLHOFT EDWARD M A [GB] & EP 0159858 A2 19851030 - WILLHOFT EDWARD MAX ADOLF
- [YA] US 3277657 A 19661011 - HARPER JOHN D, et al
- [A] US 4276753 A 19810707 - SANDBERG GLENN A, et al
- [A] US 4142376 A 19790306 - SANDBERG GLENN A
- [A] US 4955206 A 19900911 - LANG GARY D [US], et al
- [A] US 3728869 A 19730424 - SCHMIDT H
- [A] US 3892104 A 19750701 - KLEE DAVID J, et al
- [A] US 4800728 A 19890131 - KLEE DAVID J [US]
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0583692 A1 19940223; EP 0583692 B1 19951018; DE 69300669 D1 19951123; DE 69300669 T2 19960321; GB 9217189 D0 19920923
DOCDB simple family (application)
EP 93112539 A 19930805; DE 69300669 T 19930805; GB 9217189 A 19920813