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Positive temperature coefficient (PTC) heater

A heater and PTC technology, applied in ohmic resistance heating, heating element materials, ohmic resistance heating components, etc., can solve problems such as wattage reduction, and achieve the effect of increasing heat output

Inactive Publication Date: 2019-06-04
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The wattage that the PTC heater is able to convert into heat is therefore also reduced

Method used

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  • Positive temperature coefficient (PTC) heater
  • Positive temperature coefficient (PTC) heater
  • Positive temperature coefficient (PTC) heater

Examples

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Embodiment Construction

[0022] figure 1 and figure 2 A cross-sectional view of a PTC heater 1 according to the invention is shown. image 3 A perspective view of the PTC heater 1 is shown. The PTC heater 1 thus has a PTC heating element 2 comprising a heating layer 3 which is arranged between two electrode plates 4a and 4b and which is in electrical contact with the two electrode plates. The heating layer 3 is made of a PTC material, which preferably comprises barium titanate or consists of barium titanate. The PTC heating element 2 is housed in a housing 5 of the PTC heater 1 in a dustproof and waterproof manner, wherein insulating plates 6 a and 6 b are arranged between the electrode plates 4 a and 4 b and the housing 5 . The respective insulating plates 6 a and 6 b are fixed to the case 5 so as to transfer heat and electrically insulate the electrode plates 4 a and 4 b from the case 5 . In this way the PTC heater 1 is protected against touch and flashover. The insulating plates 6 a and 6 b c...

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Abstract

The invention relates to a PTC heater (1) with at least one PTC heating element (2). The PTC heating element (2) comprises a heating layer (3) made of a PTC material, which is arranged between two electrode plates (4a, 4b) and is electrically contacted therewith. The PTC heater (1) contains a housing (5) in which the at least one PTC heating element (2) is arranged. The electrode plates (4a, 4b) of the at least one PTC heating element (2) are fixed to the housing (5) in a heat-transmitting and electrically insulated manner. According to the invention, at least one electrically insulated heat-conducting layer (8) divides the heating layer (3) and is fixed on the divided heating layer (3) in a heat-transmitting manner.

Description

technical field [0001] The invention relates to a PTC heater comprising at least one PTC heating element according to the preamble of claim 1 . Background technique [0002] Modern motor vehicles are gradually optimizing consumption, and small amounts of waste heat can be used to generally heat the interior. Especially when starting the motor vehicle cold and in the event of low outside temperatures, the interior can additionally be heated, for example by means of PTC (Positive Temperature Coefficient) heaters. PTC heaters are already known in the prior art and are typically made of ceramic PTCs, which are characterized by an increase in electrical resistance with increasing temperature. The PTC heater is throttled by its own behavior, the heating surface of the PTC heater has a uniform temperature distribution. The temperature of the heating surface is especially independent of the boundary conditions – such as the applied voltage, the resistance of the PTC or the amount ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/02
CPCH05B3/30H05B2203/02H05B3/14H05B3/262H05B2203/013H05B3/283
Inventor 米夏埃尔·科尔埃里克·马利尔斯特凡·佩措尔德戴维·罗莱法尔克·菲赫尔格丹尼斯·维德曼
Owner MAHLE INT GMBH
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