Title (en)

A refrigeration plant

Title (de)

Kälteanlage

Title (fr)

Installation frigorifique

Publication

EP 1637819 A3 20061227 (EN)

Application

EP 05445051 A 20050622

Priority

SE 0402168 A 20040910

Abstract (en)

[origin: EP1637819A2] A refrigeration plant comprising a refrigerant circuit (10) including a first pump (12), a first heat consumer (11, 14), at least two secondary heat exchangers (31-33) which are connected in parallel across conducting parts (10a, 10b) of the circuit (10) said parts (10a, 10b) being connecting to the heat consumer (11) and functioning to cool a respective heat emitting unit (51-53, 51'-53') which is through-passed by refrigerant and which belongs to at least one refrigeration plant (41';41-43), such as a refrigerator or freezer. The pumps (12 21) are adapted to drive the refrigerant in mutually opposite directions such that the circuit will obtain a low pressure side (10a) and a high pressure side (10b). The plant also includes a pressure difference sensor (22) which detects the pressure difference between the low pressure side (10a) and the high pressure side (10b). The second pump (21) is adapted to deliver a generally constant flow of refrigerant. A shunt line (60) is established between the high pressure side (10b) and the low pressure side (10a) and contains a device (61) for controlling the flow of refrigerant through the shunt line (60), wherein the flow controlling device (61) is controlled by the pressure difference sensor so as to maintain a generally constant pressure difference between the high pressure side (10b) and the low pressure side (10a).

IPC 8 full level

F25B 25/00 (2006.01); F25B 29/00 (2006.01); F25B 49/02 (2006.01)

IPC 8 main group level

F25B (2006.01)

CPC (source: EP)

F25B 25/005 (2013.01); F25B 29/003 (2013.01); F25B 49/02 (2013.01); F25B 2400/06 (2013.01)

Citation (search report)

• [DA] EP 1262722 A2 20021204 - INGENJOERS LENNART ASTEBERG AB [SE]
• [A] WO 0119519 A1 20010322 - MIRAI ELECTRONICS AB [SE], et al

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR LV MK YU

DOCDB simple family (publication)

EP 1637819 A2 20060322; EP 1637819 A3 20061227; SE 0402168 D0 20040910; SE 0402168 L 20060311; SE 527635 C2 20060425

DOCDB simple family (application)

EP 05445051 A 20050622; SE 0402168 A 20040910