EP 3477221 B1 20200129 - HEAT MEDIUM CIRCULATION SYSTEM
Title (en)
HEAT MEDIUM CIRCULATION SYSTEM
Title (de)
SYSTEM FÜR HITZEMEDIUMZIRKULATION
Title (fr)
SYSTÈME DE CIRCULATION DE MILIEU THERMIQUE
Publication
Application
Priority
JP 2016068700 W 20160623
Abstract (en)
[origin: EP3477221A1] Provided is a heat medium cycle system capable of being continuously operated while a heat medium is being prevented from freezing in a heat medium heat exchanger by using a pressure difference of the heat medium obtained from a measurement value of an inlet pressure sensor provided at an inlet of the heat medium heat exchanger and a measurement value of an outlet pressure sensor provided at an outlet of the heat medium heat exchanger. The heat medium cycle system includes a refrigeration cycle circuit, a heat medium cycle circuit, an inlet temperature sensor, the inlet pressure sensor, the outlet pressure sensor, an evaporating temperature sensor, and a controller. Under a first condition where the heat medium is to freeze in the heat medium heat exchanger, the controller is configured to obtain a minimum on-state flow rate at which the heat medium is kept from freezing in the heat medium heat exchanger, on the basis of a temperature of the heat medium at a heat medium inlet measured by the inlet temperature sensor and an evaporating temperature of refrigerant detected by the evaporating temperature sensor, and control a pump in such a manner that the minimum on-state flow rate is maintained to make the pressure difference of the heat medium obtained from a measurement value of the inlet pressure sensor and a measurement value of the outlet pressure sensor into a minimum on-state pressure difference.
IPC 8 full level
F24F 11/41 (2018.01); F24F 5/00 (2006.01); F24F 11/46 (2018.01); F24F 11/62 (2018.01); F24F 11/70 (2018.01); F25B 1/00 (2006.01)
CPC (source: EP)
F24F 11/41 (2017.12); F24F 11/46 (2017.12); F24F 11/62 (2017.12); F24F 11/70 (2017.12); F24F 11/85 (2017.12); F25B 1/00 (2013.01); F24F 5/001 (2013.01); F24F 11/64 (2017.12); F24F 2140/12 (2017.12); F24F 2140/20 (2017.12); F24F 2140/50 (2017.12); F24F 2203/021 (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
DOCDB simple family (publication)
EP 3477221 A1 20190501; EP 3477221 A4 20190724; EP 3477221 B1 20200129; JP 6570746 B2 20190904; JP WO2017221383 A1 20190131; WO 2017221383 A1 20171228
DOCDB simple family (application)
EP 16906300 A 20160623; JP 2016068700 W 20160623; JP 2018523238 A 20160623