EP 2718642 B1 20160914 - A MULTI-EVAPORATOR REFRIGERATION CIRCUIT
Title (en)
A MULTI-EVAPORATOR REFRIGERATION CIRCUIT
Title (de)
KÄLTEKREISLAUF MIT MEHREREN VERDAMPFERN
Title (fr)
CIRCUIT DE RÉFRIGÉRATION À MULTIPLES ÉVAPORATEURS
Publication
Application
Priority
- IT TV20110077 A 20110606
- IT TV20110141 A 20111014
- IT TV20120010 A 20120119
- FI 2012050513 W 20120528
Abstract (en)
[origin: WO2012168544A1] The invention relates to a multi-evaporator refrigeration circuit of low pressure receiver type adapted to use carbon dioxide as a refrigerant, comprising at least a compressor (1); a condenser/gas cooler (2); a first throttling valve (4); a liquid/vapour separator (5); a pressure limiting valve (9); a liquid level sensing device (22); at least one evaporator (7); and a suction receiver (8). The refrigeration circuit is adapted to feed the liquid refrigerant to the at least one evaporator (7) from said separator (5) through a second throttling device (6). In the refrigeration circuit at least one ejector (14) comprising a suction port (15) is included in parallel to the first throttling valve (4). The refrigeration circuit is adapted to drive cold liquid from the suction receiver (8) to the suction port (15) of said at least one ejector (14), being the charge transfer activated by the flow transfer, for maintaining a sufficient liquid level in the separator (5) even if the mass flow circulating in evaporators (7) is higher than the mass flow evaporated, through an opening of one valve (10) in the line from the suction receiver (8) to the suction port (15) of the ejector (14), based on a maximum level signal generated by the liquid level sensing device (22), whenever the level of liquid in said suction receiver (8) is above a maximum set level. The present invention also relates to a method in a booster refrigeration circuit including a low temperature circuit, where the liquid mass flow exiting evaporator(s) 18 is evaporated in one circuit of one heat exchanger 16, which other circuit is arranged for circulation of the whole liquid mass flow feeding both MT and LT evaporators.
IPC 8 full level
F25B 1/10 (2006.01); F25B 9/00 (2006.01); F25B 41/00 (2021.01)
CPC (source: EP)
F25B 9/008 (2013.01); F25B 41/00 (2013.01); F25B 41/39 (2021.01); F25B 5/02 (2013.01); F25B 7/00 (2013.01); F25B 2309/061 (2013.01); F25B 2341/0012 (2013.01); F25B 2400/13 (2013.01); F25B 2400/23 (2013.01); F25B 2600/2509 (2013.01); F25B 2600/2521 (2013.01); F25B 2700/04 (2013.01)
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012168544 A1 20121213; AU 2012266219 A1 20150611; AU 2012266219 B2 20160908; CA 2868441 A1 20121213; CA 2868441 C 20180710; DK 2718642 T3 20161219; EP 2718642 A1 20140416; EP 2718642 A4 20150401; EP 2718642 B1 20160914; ES 2602169 T3 20170217; HR P20161607 T1 20170113; HU E032488 T2 20170928; LT 2718642 T 20161125; PL 2718642 T3 20170731; PT 2718642 T 20161220
DOCDB simple family (application)
FI 2012050513 W 20120528; AU 2012266219 A 20120528; CA 2868441 A 20120528; DK 12796452 T 20120528; EP 12796452 A 20120528; ES 12796452 T 20120528; HR P20161607 T 20161201; HU E12796452 A 20120528; LT 12796452 T 20120528; PL 12796452 T 20120528; PT 12796452 T 20120528