EP 2965025 A1 20160113 - PREDICTIVE FAILURE ALGORITHM FOR REFRIGERATION SYSTEMS
Title (en)
PREDICTIVE FAILURE ALGORITHM FOR REFRIGERATION SYSTEMS
Title (de)
PRÄDIKTIVER FEHLERALGORITHMUS FÜR KÄLTEANLAGEN
Title (fr)
ALGORITHME DE DÉFAILLANCE PRÉDICTIF POUR SYSTÈMES DE RÉFRIGÉRATION
Publication
Application
Priority
- US 201361773280 P 20130306
- US 201414155853 A 20140115
- US 2014011757 W 20140116
Abstract (en)
[origin: US2014250925A1] An apparatus and method for predicting failure of a ultralow temperature freezer is disclosed. The freezer includes a variety of temperature sensors, which monitor the temperature of the freezer at various components, such as at the heat exchanger, the condenser, and the evaporator. A controller is in communication with these sensors. The controller monitors these sensors and may determine that the freezer has experienced a performance degradation, or a severe performance degradation. In some embodiments, the controller also monitors other events, such as the actuation of the compressors, and closing of the freezer door. The controller uses temperature information, either absolute sensor readings, or the difference between two different sensor to estimate refrigerant volume and flow rate in the system. In some embodiment, the controller also uses elapsed time from a specific event and a temperature reading to estimate refrigerant volume and flow rate in the system.
IPC 8 full level
F25B 49/00 (2006.01); F25B 7/00 (2006.01); F25D 11/04 (2006.01); F25D 29/00 (2006.01)
CPC (source: EP US)
F25B 49/005 (2013.01 - EP US); F25D 29/008 (2013.01 - EP US); F25B 7/00 (2013.01 - EP US); F25B 2500/06 (2013.01 - EP US); F25B 2700/2115 (2013.01 - EP US); F25B 2700/2117 (2013.01 - EP US); F25D 11/04 (2013.01 - EP US); F25D 2600/02 (2013.01 - EP US); F25D 2700/02 (2013.01 - EP US); F25D 2700/14 (2013.01 - EP 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 MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2014250925 A1 20140911; CN 105393070 A 20160309; EP 2965025 A1 20160113; EP 2965025 A4 20170125; WO 2014137493 A1 20140912
DOCDB simple family (application)
US 201414155853 A 20140115; CN 201480025817 A 20140116; EP 14760218 A 20140116; US 2014011757 W 20140116