EP 1794455 A1 20070613 - METHOD FOR THE ELECTRICAL PROTECTION OF AN ELECTRICAL HOUSEHOLD APPLIANCE
Title (en)
METHOD FOR THE ELECTRICAL PROTECTION OF AN ELECTRICAL HOUSEHOLD APPLIANCE
Title (de)
VERFAHREN FÜR DEN ELEKTRISCHEN SCHUTZ EINES ELEKTROHAUSHALTSGERÄTS
Title (fr)
PROCEDE DE PROTECTION ELECTRIQUE D'UN APPAREIL ELECTROMENAGER
Publication
Application
Priority
- FR 2005050695 W 20050831
- FR 0452212 A 20040930
Abstract (en)
[origin: WO2006035171A1] The invention relates to a method for the electrical protection of an electrical household appliance that is used to prepare food (1), comprising an electric pump (2) which is supplied with alternating current in order to convey a liquid (3) through a conduit (4) and a heating element (5) in order to raise the temperature of said liquid (3). According to the invention, the instantaneous value of the current I supplied to the pump (2) is measured at regular time intervals. The invention is characterised in that it comprises the following steps consisting in: calculating the average value a<SUB>n</SUB> of the current I measurements m taken over a pre-determined time period T; comparing the average value a<SUB>n</SUB> with a reference value a<SUB>ref</SUB> calculated as the average value of the current I measurements taken over an earlier period of the same length; and opening the pump supply circuit (2) when the difference between the average values a<SUB>ref</SUB> and a<SUB>n</SUB> exceeds a pre-determined threshold value ?<SUB>1</SUB> for at least two successive time periods T.
IPC 8 full level
F04B 49/06 (2006.01)
CPC (source: EP US)
F04B 49/065 (2013.01 - EP US); F04B 2203/0201 (2013.01 - EP US); F04B 2203/0401 (2013.01 - EP US)
Citation (search report)
See references of WO 2006035171A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2875962 A1 20060331; FR 2875962 B1 20061201; EP 1794455 A1 20070613; US 2008092750 A1 20080424; US 7650247 B2 20100119; WO 2006035171 A1 20060406
DOCDB simple family (application)
FR 0452212 A 20040930; EP 05797426 A 20050831; FR 2005050695 W 20050831; US 57429105 A 20050831