Global Patent Index - EP 4224093 A1

EP 4224093 A1 20230809 - REFRIGERATION DEVICE

Title (en)

REFRIGERATION DEVICE

Title (de)

KÜHLVORRICHTUNG

Title (fr)

DISPOSITIF DE RÉFRIGÉRATION

Publication

EP 4224093 A1 20230809 (EN)

Application

EP 22155366 A 20220207

Priority

EP 22155366 A 20220207

Abstract (en)

A refrigeration device comprises a compressor (1), a plurality of utilization side heat exchangers, an expansion mechanism (4) and a heat source side heat exchanger (5), which are fluidly connected in series to constitute a refrigeration circuit. The refrigeration device further comprises a first refrigerant pipe (6), which extends from the compressor (1) to a first utilization side heat exchanger (2) of the plurality of utilization side heat exchangers. The first refrigerant pipe (6) comprises a first valve (7) configured to at least fully open and fully close the first refrigerant pipe (6). The refrigeration device also comprises a second refrigerant pipe (8), which extends from the compressor (1) to a second utilization side heat exchanger (3.1, 3.2, 3.3) of the plurality of utilization side heat exchangers. The second refrigerant pipe (8) comprises a second valve (9) configured to at least fully open and fully close the second refrigerant pipe (8). The refrigeration device also comprises a controller, which is configured to fully close the first valve (7) when the operation of the first utilization side heat exchanger (2) is stopped and/or which is configured to fully close the second valve (9) when the operation of the second utilization side heat exchanger (3.1, 3.2, 3.3) is stopped. In addition, the refrigeration device comprises a first bypass pipe (10) extending from a downstream side (6.2) of the first valve (7) when the refrigeration device is used in a heating mode to a suction side of the compressor (1) and a second bypass pipe (11) extending from a downstream side (8.2) of the second valve (9) when the refrigeration device is used in a heating mode to a suction side of the compressor (1). The first and second bypass pipes (10, 11) each comprise pressure-reducing means (12) that are configured to reduce the pressure of a refrigerant in the first and second bypass pipes (10, 11) .

IPC 8 full level

F25B 13/00 (2006.01); F25B 41/24 (2021.01)

CPC (source: EP)

F25B 13/00 (2013.01); F25B 41/24 (2021.01); F25B 2313/003 (2013.01); F25B 2313/0232 (2013.01); F25B 2313/0233 (2013.01); F25B 2313/02334 (2013.01); F25B 2400/19 (2013.01); F25B 2500/18 (2013.01); F25B 2600/2515 (2013.01); F25B 2600/2519 (2013.01)

Citation (applicant)

EP 2653805 A1 20131023 - MITSUBISHI ELECTRIC CORP [JP]

Citation (search report)

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

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4224093 A1 20230809; CN 118679353 A 20240920; WO 2023148396 A1 20230810

DOCDB simple family (application)

EP 22155366 A 20220207; CN 202380020297 A 20230207; EP 2023052936 W 20230207