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Air heating device for a vehicle

A technology of air heaters and tools, which is applied in the direction of air heaters, water heaters, fluid heaters, etc., can solve the problems of large short circuit risk, complicated installation, troublesome manufacturing, etc., and achieve low short circuit risk, high power density, surface big effect

Pending Publication Date: 2020-01-10
WEBASTO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Disadvantages of conventional air heaters with ceramic PTC elements are the complex manufacture due to the more complex processing of the heat transfer device and the installation of the ceramic element, the ceramic elements often need to be sorted due to manufacturing tolerances, in the heating element - heat transfer device Unfavorable power densities occur in composite structures due to local heat generation, the maximum heating power is strongly limited due to the thickness of the PTC material (due to the limited heat release from the ceramic), and especially due to the High risk of short circuits due to small geometric spacing of components

Method used

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  • Air heating device for a vehicle
  • Air heating device for a vehicle
  • Air heating device for a vehicle

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Embodiment Construction

[0062] figure 1 A front view of an air heater according to the invention is shown. The air heater comprises a plurality (in particular eleven, but this is not mandatory) of heating elements 9 . Each of the heating elements 9 comprises an electrically conductive carbon-containing layer 10 and a plastic substrate 11 . The corresponding carbon-containing layer 10 is connected to electrical contacts 15a, 15b via a plate 12, in particular a bent plate, preferably a copper plate. Intermediate spaces (fluid channels) 16 are formed between the heating elements 9 . Air flows through these intermediate spaces 16 (in figure 1 Into the plane of the paper or out of the plane of the paper) for the heating of the air. If necessary, the (edge ​​side) heating element (on the figure 1 A further intermediate space 16a is provided outside the lowermost heating element). This further intermediate space 16 a can then be delimited on the other side by a wall, for example a housing wall, for ex...

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Abstract

The invention relates to an electric air heating device for a vehicle, in particular a motor vehicle, preferably passenger cars or lorries, comprising at least one first heating element (9) around which air which can be heated flows. The first heating element (9) comprises a preferably electrically insulating substrate (11) and at least one electrically conductive, carbon-containing coating (10),in particular a polymer coating.

Description

technical field [0001] The invention relates to an air heater, in particular for a vehicle, preferably a motor vehicle. Background technique [0002] Electric air heaters, especially those used in mobile applications, are generally based on ceramic heating elements with a relatively large temperature-dependent electrical resistance, by means of which a self-regulation of the heat release is possible. The resistor is usually a ceramic PTC element (PTC stands for Positive Temperature Coefficient: positive temperature coefficient). The ceramic PTC element is usually connected to the surface of the heat transfer device consisting of an aluminum plate and is thus also electrically contacted. The PTC element comprises a PTC resistor, ie a temperature-dependent resistor with a positive temperature coefficient, which conducts electricity better at low temperatures than at high temperatures. [0003] Disadvantages of conventional air heaters with ceramic PTC elements are the comple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H3/04H05B3/14B60H1/00H05B3/22
CPCF24H1/103F24H1/121F24H1/202F24H3/04F24H3/0429H05B3/146F24H2250/04H05B2203/02H05B2203/021H05B2203/023H05B2214/04B60H1/2221B60H1/2225B60H2001/00128H05B3/22H05B3/26H05B3/50H05B3/20B60H2001/2271H05B3/565B60H1/2218H05B2203/017B29C45/0001B29C45/14639B29K2307/04B29K2995/0005B29L2031/779H05B3/18H05B3/286H05B2203/024F24H1/009H05B3/06H05B3/145H05B1/0236H05B3/82H05B2203/003
Inventor M·措斯克V·伊利琴科U·施特雷克尔B·迈尔N·格哈特M·施瓦内克M·格鲁贝尔C·库斯曼
Owner WEBASTO AG