EP 2496893 B1 20190102 - REFRIGERATING CIRCUIT AND METHOD FOR SELECTIVELY DEFROSTING COLD CONSUMER UNITS OF A REFRIGERATING CIRCUIT
Title (en)
REFRIGERATING CIRCUIT AND METHOD FOR SELECTIVELY DEFROSTING COLD CONSUMER UNITS OF A REFRIGERATING CIRCUIT
Title (de)
KÄLTEKREIS UND VERFAHREN ZUR SELEKTIVEN ENTFROSTUNG VON KÄLTEVERBRAUCHEREINHEITEN EINES KÄLTEKREISES
Title (fr)
CIRCUIT DE RÉFRIGÉRATION ET PROCÉDÉ DE DÉGIVRAGE SÉLECTIF D'UNITÉS CONSOMMATRICES DE FROID D'UN CIRCUIT DE RÉFRIGÉRATION
Publication
Application
Priority
EP 2009064773 W 20091106
Abstract (en)
[origin: WO2011054397A1] A refrigerating circuit (2) according to exemplary embodiments of the invention comprises a first compressor unit (4), a condenser/gas cooler (6), and a collecting container (10), a normal refrigeration branch coupled between the collecting container (10) and the suction side of the at least one first compressor unit (4), the normal refrigeration branch comprising at least one cold consumer having an evaporator (18) with an expansion device (16) arranged before it; and a freezing branch coupled between the collecting container (10) and the suction side of the first compressor unit (4), the freezing branch comprising at least one cold consumer having an evaporator (24) with an expansion device (22) arranged before it, a second compressor unit (28) and a desuperheating device (32), the refrigerant circuit (2) further comprising refrigerant conduits for connecting said elements and for circulating a refrigerant therethrough, a defrosting line (36) connected between a branching-off point in the pressure line (6) after the first compressor unit (4) and at least one attaching point between the expansion device (16; 22) and the evaporator (18; 24) of one of the cold consumer units, wherein a pressure reduction valve (38) is arranged in the defrosting line (36), a control unit being configured to operate at least one of the evaporators (18, 24) in a defrosting mode, in which a partial flow of the pressurized gaseous refrigerant leaving the first compressor unit (4) is led to the respective evaporator (18, 24) through the defrosting line (36), wherein the pressure of the refrigerant is reduced by the pressure reduction valve (38) and the refrigerant defrosts the respective evaporator (18, 24) while maintaining its gaseous state and flows back to the respective compressor unit (4, 28).
IPC 8 full level
F25B 1/10 (2006.01); F25B 5/02 (2006.01); F25B 9/00 (2006.01); F25B 47/02 (2006.01)
CPC (source: EP)
F25B 1/10 (2013.01); F25B 5/02 (2013.01); F25B 41/39 (2021.01); F25B 47/022 (2013.01); F25B 9/008 (2013.01); F25B 2309/061 (2013.01); F25B 2400/0403 (2013.01); F25B 2400/0411 (2013.01); F25B 2400/072 (2013.01); F25B 2400/075 (2013.01); F25B 2400/13 (2013.01); F25B 2400/23 (2013.01); F25B 2600/2501 (2013.01); F25B 2700/21152 (2013.01); F25B 2700/2117 (2013.01)
Citation (examination)
US 6244059 B1 20010612 - HILL HERBERT L [US]
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
WO 2011054397 A1 20110512; DK 2496893 T3 20190423; EP 2496893 A1 20120912; EP 2496893 B1 20190102
DOCDB simple family (application)
EP 2009064773 W 20091106; DK 09752337 T 20091106; EP 09752337 A 20091106