EP 0180904 A2 19860514 - Cooling device.
Title (en)
Cooling device.
Title (de)
Kühlvorrichtung.
Title (fr)
Dispositif de refroidissement.
Publication
Application
Priority
DE 3440253 A 19841103
Abstract (en)
1. A cooling device comprising a multi-cylinder reciprocating compressor (21), a liquefier (25), an expansion unit (27) an evaporator (23), and pipes (22, 24, 26) to contain a cooling liquid which can be vaporized, which pipes connect the reciprocating compressor, the liquefier, the expansion unit and the evaporator to one another, and with a supercooler (28, 38) for the cooling liquid, which supercooler operates with a cooling medium which can be vaporized and is situated in the pipe (26) between the liquefier and the expansion unit, wherein a part of the cooling liquid is used as cooling medium for the supercooler, and wherein the outlet opening (31) of the supercooler is connected by means of an auxiliary suction pipe (32) to the suction side of a portion of the cylinders of the reciprocating compressor, and wherein, moreover, either a part of the cooling liquid which is diverted after the liquefier is led through an additional expansion unit (30), and then through the supercooler which is then constructed as a heat exchanger (28) and from here to the auxiliary suction pipe, or the supercooler is constructed as a gas-liquid-separating vessel (38) connected to the auxiliary suction pipe, in which part of the diverted cooling liquid is vaporized by pressure reduction and consequently the remaining liquid portion is cooled, characterized in that a suction chamber (42), which is connected to the auxiliary suction pipe (32), of at least one cylinder of the reciprocating compressor (21) is separated by a separating wall (41) from the suction chambers (43) of the other cylinders, and a valve device (45) is arranged in the separating wall, and in that this valve device closes when the pressure in the suction chamber (42) connected to the auxiliary suction pipe exceeds that in the other suction chambers (43).
Abstract (de)
Bei einer Kühlvorrichtung mit einem mehrere Zylinder aufweisenden Kolbenverdichter, einem Verflüssiger, einem Expansionsorgan und einem Verdampfer, mit einer diese Teile miteinander verbindenden Leitung für eine verdampfbare Kälteflüssigkeit und mit einem in der Leitung zwischen Verflüssiger und Expansionsorgan vorgesehenem Unterkühler für die Kälteflüssigkeit ist vorgesehen, daß als Kühlmittel für den Unterkühler ein Teil der Kälteflüssigkeit verwendet ist, und die Auslaßöffnung des Unterkühlers für verdampftes Kühlmittel über eine zusätzliche Saugleitung mit der Saugseite eines Teiles der Zylinder des Verdichters verbunden ist.
IPC 1-7
IPC 8 full level
CPC (source: EP)
F25B 1/00 (2013.01); F25B 7/00 (2013.01); F25B 2400/074 (2013.01); F25B 2400/13 (2013.01); F25B 2400/23 (2013.01); F25B 2600/2509 (2013.01)
Designated contracting state (EPC)
AT BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0180904 A2 19860514; EP 0180904 A3 19861008; EP 0180904 B1 19890830; AT E46026 T1 19890915; DE 3440253 A1 19860515; DE 3572721 D1 19891005
DOCDB simple family (application)
EP 85113773 A 19851029; AT 85113773 T 19851029; DE 3440253 A 19841103; DE 3572721 T 19851029