EP 4194773 B1 20240522 - HEAT PUMP CASCADE AND METHOD FOR HEATING OR COOLING COOLANT BY USING HEAT PUMP CASCADE
Title (en)
HEAT PUMP CASCADE AND METHOD FOR HEATING OR COOLING COOLANT BY USING HEAT PUMP CASCADE
Title (de)
WÄRMEPUMPENKASKADE UND VERFAHREN ZUR ERWÄRMUNG ODER ABKÜHLUNG EINES KÜHLMITTELS MITTELS EINER WÄRMEPUMPENKASKADE
Title (fr)
CASCADE DE POMPES À CHALEUR ET PROCÉDÉ DE CHAUFFAGE OU DE REFROIDISSEMENT D'UN RÉFRIGÉRANT AU MOYEN D'UNE CASCADE DE POMPES À CHALEUR
Publication
Application
Priority
DE 102021214258 A 20211213
Abstract (en)
[origin: US2023184468A1] In order to provide a cascade heat pump with which a large temperature lift can be provided with high efficiency, a cascade heat pump comprising n stages where n≥2 is proposed. Each of the n stages has a heat pump with a coolant inlet, a first coolant outlet, and a second coolant outlet. Each heat pump has a hot side and a cold side and a flow divider to divide a coolant flow entering the coolant inlet between the hot side and the cold side. The first coolant outlet of the heat pump of each stage i, where i=1 . . . n−1, is connected to the coolant inlet of the heat pump of a subsequent stage i+1. The second coolant outlet of the heat pump of at least one subsequent stage i+1 is connected by a recirculation line to the coolant inlet of the heat pump of a preceding stage.
IPC 8 full level
F25B 21/04 (2006.01); F25B 25/00 (2006.01)
CPC (source: CN EP US)
F25B 7/00 (2013.01 - CN); F25B 21/04 (2013.01 - EP); F25B 25/005 (2013.01 - EP); F25B 29/00 (2013.01 - CN); F25B 30/00 (2013.01 - CN US); F25B 41/40 (2021.01 - CN US); F25B 2321/001 (2013.01 - US); F25B 2321/002 (2013.01 - US)
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4194773 A1 20230614; EP 4194773 B1 20240522; CN 116263276 A 20230616; DE 102021214258 A1 20230615; US 2023184468 A1 20230615
DOCDB simple family (application)
EP 22206893 A 20221111; CN 202211587946 A 20221207; DE 102021214258 A 20211213; US 202218077735 A 20221208