Global Patent Index - EP 2690379 A1

EP 2690379 A1 20140129 - Appliance including a heat pump

Title (en)

Appliance including a heat pump

Title (de)

Anwendung mit Wärmepumpe

Title (fr)

Appareil comprenant une pompe à chaleur

Publication

EP 2690379 A1 20140129 (EN)

Application

EP 12177962 A 20120726

Priority

EP 12177962 A 20120726

Abstract (en)

The invention relates to an appliance (1) including a treating chamber (3) in which a process medium is introduced; a heat pump (6) having a refrigerant circuit (68) in which a refrigerant can flow, the refrigerant circuit including a first heat exchanger (61) where the refrigerant is cooled off and said process medium is warmed up, a second heat exchanger (62) where the refrigerant is heated up, a compressor (63) to pressurize and circulate the refrigerant through the refrigerant circuit, the compressor including a lubricant, and a pressure-lowering device (64). The first and second heat exchanger, compressor and pressure-lowering device are operatively connected through refrigerant circuit piping (65) into which the refrigerant is apt to flow. The refrigerant circuit piping (65) comprises at least a narrow piping portion having a narrow hydraulic diameter (D Hnarrow ), and the ratio between the narrow hydraulic diameter (D Hnarrow ) and the hydraulic diameter (D H ) of the remaining piping portions of the refrigerant circuit piping (65) is comprised between 0.4 and 0.95. The at least one narrow piping portion being located in at least one of: - between an outlet of the second heat exchanger (62) and an inlet of the compressor (63a), or - Between an outlet of the first heat exchanger (61) and an inlet of the pressure-lowering device (64), or - Between an outlet of the pressure-lowering device (64) and an inlet of the second heat exchanger (62), or - below or at the suction inlet level (L) of the compressor (63).

IPC 8 full level

F25B 31/00 (2006.01); F25B 1/00 (2006.01); F25B 30/02 (2006.01)

CPC (source: CN EP)

F25B 1/00 (2013.01 - EP); F25B 30/02 (2013.01 - CN EP); F25B 31/00 (2013.01 - EP); F25B 31/002 (2013.01 - CN EP); F28D 21/0014 (2013.01 - EP); F25B 2500/16 (2013.01 - EP)

Citation (applicant)

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

DOCDB simple family (publication)

EP 2690379 A1 20140129; AU 2013295230 A1 20150129; CN 104508398 A 20150408; CN 104508398 B 20171121; EP 2877792 A1 20150603; WO 2014016140 A1 20140130

DOCDB simple family (application)

EP 12177962 A 20120726; AU 2013295230 A 20130712; CN 201380039671 A 20130712; EP 13740225 A 20130712; EP 2013064780 W 20130712