ELECTRICAL HEATING DEVICE
First Claim
Patent Images
1. An electrical heating device for heating the interior of a vehicle, comprising:
- a plurality of PTC heating rods each comprising ceramic PTC heating resistors;
an NTC heating rod comprising at least one NTC resistor;
a holder that holds the PTC heating rods and the NTC heating rod; and
heat sinks for transferring heat from the PTC heating rods to an air flow;
wherein the PTC heating rods are connected in series to the NTC heating rod.
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Abstract
Disclosed is an electrical heating device for heating the interior of a vehicle, comprising a plurality of PTC heating rods each comprising ceramic PTC heating resistors, heat sinks for transferring heat from the PTC heating rods to an air flow, and a holder holding the PTC heating rods. The PTC heating rods are connected in series to an NTC heating rod comprising at least one NTC resistor, wherein the NTC heating rod is held by the holder.
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Citations
10 Claims
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1. An electrical heating device for heating the interior of a vehicle, comprising:
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a plurality of PTC heating rods each comprising ceramic PTC heating resistors; an NTC heating rod comprising at least one NTC resistor; a holder that holds the PTC heating rods and the NTC heating rod; and heat sinks for transferring heat from the PTC heating rods to an air flow; wherein the PTC heating rods are connected in series to the NTC heating rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrical heating device for heating the interior of a vehicle, comprising:
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a plurality of heating rods, each heating rod comprising a tube in which ceramic PTC heating resistors are arranged; heat sinks for transferring heat from the heating rods to an air flow; and a holder that holds the heating rods; wherein, in at least one of the heating rods, each ceramic PTC resistor is connected in series to an NTC resistor.
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Specification