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US 12,414,203 B2Granted
Heating device
AssigneeRobert Bosch GmbH
InventorMichael Huis
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AssigneeRobert Bosch GmbH
InventorMichael Huis
Estimating the term…
The invention relates to a heating device (3) for a storage container with a urea reducing agent, comprising at least one electrically operatable heating element (6) and a heat distribution element (7) which is thermally coupled to the heating element (6), wherein the heating element (6) has a first heating sub-element (40) which has at least one positive temperature coefficient thermistor (5), and the first heating sub-element (40) is connected to a second heating sub-element (42, 52, 62) which is designed to reduce the dependence of the heat output of the heating device (3) on an electric voltage applied to the heating element (6) in the event of an electric voltage with large values, in particular above 13 volt, so that the heat output dispensed to the thermal conducting element and the surrounding components with plastic encapsulation is not too high.
A heating device (3), comprising at least one electrically operable heating element (6) and a heat distribution element (7) that is thermally coupled to the heating element (6), wherein the heating element (6) has a first heating sub-element (40) that has at least one positive temperature coefficient thermistor (5), wherein the first heating sub-element (40) is connected in parallel to a second heating sub-element (42, 52, 62) that is configured to reduce a dependence of a heating power of the heating device (3) on a voltage applied to the heating element (6) in a case of values of the voltage above 13 volts, wherein the heating power increases with an increase in the voltage applied to the heating element (6), wherein a rate of increase of the heating power decreases with the increase in the voltage applied to the heating element (6).
Dependencies are inferred from the claim text.