The heater has a set of positive temperature coefficient heating elements heating airflow. A temperature sensor (31) is arranged within the heater for measuring temperature for an indirect determination of a surface temperature of the heating element based on thermal radiation and/or thermal conduction. A control device is used for detecting whether the temperature measured by the temperature sensor exceeds a predetermined temperature value. The control device reduces the heating power if the control device states that temperature exceeds the predetermined temperature value. Independent claims are also included for the following: (1) a motor car interior heating unit (2) a method for monitoring an electrical heater for a motor car.
Elektrische Heizung für ein Kraftfahrzeug
Electric heater for a motor vehicle
Chauffage électrique pour véhicule automobile
2018-03-21
Patent
Electronic Resource
German
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F24H FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, IN GENERAL , Erhitzer für flüssige oder gasförmige Stoffe, z.B. Wasser- oder Lufterhitzer mit Vorrichtungen zur Wärmeerzeugung, allgemein / H05B ELECTRIC HEATING , Elektrische Heizung |
Elektrische Heizvorrichtung und elektrische Heizung für ein Fahrzeug
European Patent Office | 2022
|Kompromisslose Heizung. Elektrische PTC Zusatzheizung
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