Household laundry appliance fitted with a lifting magnet

Abstract

The tumble drying device has a heat pump with a lifting magnet, with a rinsing valve of the heat pump being connectable by means of the lifting magnet, with the lifting magnet and a PTC resistor with a non-linear resistance curve being connected in series, with it being possible to heat up the PTC resistor by means of a current flow and said PTC resistor being highly resistive when a predetermined limit temperature is exceeded and with the limit temperature being adjusted such that it is reached before a permissible on-time of the lifting magnet is exceeded.

1 . A tumble drying device with a heat pump, comprising:
 a lifting magnet;   a rinsing valve connectable by the lifting magnet; and   a PTC resister with a non-linear resistance curve connected in series with the lifting magnet, the PTC resistor being heatable by a current flow and being highly resistive if a pre-determined limit temperature is exceeded, the pre-determined limit temperature being reached before exceeding a permissible on-time duration of the lifting magnet.   
   
   
       2 . The tumble drying device of  claim 1 , further comprising an electronic controller connected to and for actuating the lifting magnet. 
   
   
       3 . The tumble drying device of  claim 1 , wherein a correct activation of the lifting magnet heats up the PTC resistor to a temperature below the limit temperature. 
   
   
       4 . The tumble drying device of  claim 1 , wherein a correct activation of the lifting magnet takes place within a period of approximately 5-10 seconds.