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Electrical heater device, in particular having a PTC effect

An electric heater and effect technology, applied in electric heating devices, water heaters, air heaters, etc., can solve problems such as attenuation of operating characteristics

Pending Publication Date: 2021-04-13
ELTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it has been found that, particularly in the long term, heater devices can suffer from problems related to deformation (e.g. expansion and contraction) of materials having a PTC effect and / or corresponding metal electrodes due to cycles of heating and cooling. influences
Such deformations can lead to relative movement between parts made of different materials, with a possible risk of delamination or detachment of the electrodes from the corresponding faces of the heating body made of materials with the PTC effect, as well as compromises in the operational characteristics of the device ensuing attenuation

Method used

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  • Electrical heater device, in particular having a PTC effect
  • Electrical heater device, in particular having a PTC effect
  • Electrical heater device, in particular having a PTC effect

Examples

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Embodiment Construction

[0036] References to "an embodiment" or "one embodiment" within the framework of the present description are intended to indicate that a particular configuration, structure, or characteristic described with respect to the embodiment is included in at least one embodiment. Thus, phrases such as "in an embodiment" or "in one embodiment," which may be present at various points in the description, do not necessarily refer to the same embodiment. Furthermore, particular conformations, structures or properties defined within this description may be combined in any suitable manner in one or more embodiments (even different from the ones represented). Reference numerals and spatial references (such as "upper", "lower", "top", "bottom", etc.) used herein are provided for convenience only, and thus do not limit the scope of protection or the scope of the embodiments. In this description and in the appended claims, the general term "material" will be understood to include a mixture, comp...

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Abstract

An electrical heater device comprises at least one heating element (10), which includes a first electrode (121), a second electrode (122) and a heating body (11) made of a polymer-based material having a PTC effect (11a), in contact with the first electrode (121) and the second electrode (122). At least one of the first electrode (121)and the second electrode (122) comprises a meshed structure (13), which extends in a length direction (L) and in a width direction (W), and is embedded at least partially in the heating body (11). The at least one of the first electrode (121) and the second electrode (122) further comprises at least one electrical-distribution element (14), preferentially including a shaped strap or foil of electrically conductive material, which is fixed to the meshed structure (13) and includes at least one distribution portion that extends in at least one of the length direction (L) and the width direction (W) of the meshed structure (13).

Description

technical field [0001] The present invention relates to electric heater devices, based in particular on the use of materials characterized by a resistance with a positive temperature coefficient (i.e. materials with a PTC effect, preferably of polymer type, i.e. polymer-based materials or comprising at least one polymer materials). [0002] The invention has been developed with particular reference to electric heater arrangements to be associated with or integrated in vehicle components, such as heaters for tanks or reservoirs, heaters for filters , heaters for fluid conduits, heaters for batteries, heaters for substances that are prone to freezing or whose properties change with temperature, or again for heating gaseous substances such as air for the environment or in the aforementioned heating A heater that is subjected to forced circulation of air on the surface of the appliance. [0003] The invention is preferably applied to tanks that come into contact with liquids suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K13/04B60K15/03B60S1/46F24H1/00B60K1/00
CPCB60K13/04B60K15/03B60K2001/008B60K2015/03427F24H1/009F24H1/185F24H1/181F24H9/1827F24H9/1872F24H3/0429H05B3/50H05B3/03H05B3/286H05B2203/02H05B2203/021
Inventor A·巴尔巴诺M·比扎罗L·科斯塔L·韦尔切洛蒂
Owner ELTEK