EP 3855094 A1 20210728 - COOLING AND HEATING SWITCHING DEVICE FOR VARIABLE REFRIGERANT FLOW SYSTEM CAPABLE OF HEAT RECOVERY, VARIABLE REFRIGERANT FLOW SYSTEM, AND CONTROL METHOD
Title (en)
COOLING AND HEATING SWITCHING DEVICE FOR VARIABLE REFRIGERANT FLOW SYSTEM CAPABLE OF HEAT RECOVERY, VARIABLE REFRIGERANT FLOW SYSTEM, AND CONTROL METHOD
Title (de)
KÜHL- UND HEIZUMSCHALTVORRICHTUNG FÜR VARIABLES KÄLTEMITTELSTROMSYSTEM MIT WÄRMERÜCKGEWINNUNG, VARIABLES KÄLTEMITTELSTROMSYSTEM UND STEUERVERFAHREN
Title (fr)
DISPOSITIF DE COMMUTATION DE REFROIDISSEMENT ET DE CHAUFFAGE POUR SYSTÈME D'ÉCOULEMENT DE RÉFRIGÉRANT VARIABLE CAPABLE DE RÉCUPÉRATION DE CHALEUR, SYSTÈME D'ÉCOULEMENT DE RÉFRIGÉRANT VARIABLE ET PROCÉDÉ DE COMMANDE
Publication
Application
Priority
- CN 201811110339 A 20180921
- CN 2019092372 W 20190621
Abstract (en)
A cooling and heating switching device for a variable refrigerant flow system capable of heat recovery, a variable refrigerant flow system, and a control method. Ends of multiple high-pressure branch pipes of the cooling and heating switching device are respectively connected to ends of multiple low-pressure branch pipes, so as to form multiple connection nodes. The multiple connection nodes are respectively connected to gas pipes of multiple indoor units. Further ends of the multiple high-pressure branch pipes are connected to a high-pressure gas pipe (3). Further ends of the multiple low-pressure branch pipes are connected to a low-pressure gas pipe (2). Ends of multiple branch liquid pipes are respectively connected to ends of multiple liquid sub-pipes, so as to form multiple connection nodes. The multiple connection nodes are respectively connected to liquid pipes of the multiple indoor units. Further ends of the multiple branch liquid pipes are connected to a main liquid pipe (1). Further ends of the multiple liquid sub-pipes are connected to a main pipe inlet of a subcooler (4). A throttling structure is provided on a connection pipe between a cooling branch pipe inlet (C) and a main pipe outlet (B). The cooling branch pipe outlet (B) is connected to the low-pressure gas pipe (2), thereby solving the issue of loud noise caused by a flowing refrigerant in an indoor unit of a variable refrigerant flow capable of heat recovery, and achieving a compact structure and low costs.
IPC 8 full level
F25B 13/00 (2006.01); F25B 41/20 (2021.01); F25B 41/37 (2021.01); F25B 49/02 (2006.01)
CPC (source: CN EP)
F24F 3/065 (2013.01 - EP); F25B 13/00 (2013.01 - CN EP); F25B 41/20 (2021.01 - CN EP); F25B 41/31 (2021.01 - CN); F25B 49/02 (2013.01 - CN EP); F25B 2313/007 (2013.01 - EP); F25B 2313/0231 (2013.01 - EP); F25B 2313/0233 (2013.01 - EP); F25B 2400/13 (2013.01 - EP)
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 3855094 A1 20210728; EP 3855094 A4 20211208; CN 109357429 A 20190219; WO 2020057210 A1 20200326
DOCDB simple family (application)
EP 19861762 A 20190621; CN 201811110339 A 20180921; CN 2019092372 W 20190621