EP 2426437 A2 20120307 - Ultra low temperature heat pump system with secondary refrigerant injection mechanism
Title (en)
Ultra low temperature heat pump system with secondary refrigerant injection mechanism
Title (de)
Ultratieftemperatur-Wärmepumpensystem mit sekundärem Kühlmittelinjektionsmechanismus
Title (fr)
Système de pompe à chaleur à ultra basse température avec mécanisme d'injection de réfrigérant secondaire
Publication
Application
Priority
CN 201010270325 A 20100902
Abstract (en)
An ultra low temperature heat pump system with secondary refrigerant injection mechanism is disclosed which comprising a compressor, a condenser, a reservoir tank, a thermal expansion valve, a vaporizer and a separator, sequentially connected to form a circulation loop, an air refill device I provided between the compressor and the reservoir tank, which is constructed of an injection valve, an economizer, a first solenoid valve and a second solenoid valve. The two solenoid valves are arranged in parallel with the first solenoid valve connected directly to the compressor and the second solenoid valve connects sequentially to the injection valve and the economizer. The economizer is then connected to the compressor.
IPC 8 full level
F25B 13/00 (2006.01)
CPC (source: EP)
F25B 13/00 (2013.01); F25B 1/10 (2013.01); F25B 2400/13 (2013.01)
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 2426437 A2 20120307; EP 2426437 A3 20150311; CN 101922823 A 20101222
DOCDB simple family (application)
EP 11005781 A 20110714; CN 201010270325 A 20100902