EP 4148330 A1 20230315 - HEAT MEDIUM CIRCULATION SYSTEM
Title (en)
HEAT MEDIUM CIRCULATION SYSTEM
Title (de)
ZIRKULATIONSSYSTEM FÜR EIN HEIZMEDIUM
Title (fr)
SYSTÈME DE CIRCULATION DE MILIEU CALOPORTEUR
Publication
Application
Priority
JP 2021148319 A 20210913
Abstract (en)
[Object] It is an object of the present invention to provide a safe heat medium circulation system capable of detecting initial leakage of refrigerant early when trial operation is completed, and capable of reducing erroneous detection of leakage of refrigerant and according to this, it is possible to early find leakage of refrigerant.[Solving Means] The heat medium circulation system of the invention includes a heat pump cycle 24 through which refrigerant circulates, a heating cycle 50 through which heat medium heated by the heat pump cycle 24 circulates between the heat pump cycle 24 and a heating terminal 37, a pressure sensor 27 for detecting pressure of heat medium in the heating cycle 50, and a control device 35. The control device 35 determines that the refrigerant leaks from the heat pump cycle 24 to the heating cycle 50 based on a detected value of the pressure sensor 27 which is detected after a trial operation for operating the heat pump cycle 24 and the heating cycle 50 is completed after water is poured to the heating cycle 50.
IPC 8 full level
F24D 3/18 (2006.01); F24D 19/10 (2006.01); F24F 11/36 (2018.01); F24H 15/104 (2022.01); F24H 15/12 (2022.01); F24H 15/242 (2022.01); F24H 15/395 (2022.01); F24H 15/421 (2022.01); F24H 15/45 (2022.01); F24H 15/457 (2022.01)
CPC (source: EP)
F24D 3/18 (2013.01); F24D 19/1039 (2013.01); F24F 11/36 (2017.12); F24H 15/104 (2022.01); F24H 15/12 (2022.01); F24H 15/242 (2022.01); F24H 15/395 (2022.01); F24H 15/421 (2022.01); F24H 15/45 (2022.01); F24H 15/457 (2022.01)
Citation (applicant)
JP 2013185803 A 20130919 - PANASONIC CORP
Citation (search report)
- [XI] EP 2759787 A1 20140730 - MITSUBISHI ELECTRIC CORP [JP]
- [A] EP 3822545 A1 20210519 - VIESSMANN WERKE KG [DE]
- [A] EP 3647687 A1 20200506 - MITSUBISHI ELECTRIC CORP [JP]
- [A] JP 2009236425 A 20091015 - DENSO CORP
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 22194787 A 20220909; JP 2021148319 A 20210913