The invention discloses a PTC heat source, belonging to a heating device. The heat sink of the existing PTC heater has a small heat dissipation area, and the heat conduction area of the heat sink and the PTCR resistance sheet is small, which is not conducive to heat dissipation. The heat sink of the invention has a heat dissipation boss protruding in the ventilation gap, so as to increase the heat dissipation area, especially the contact area with the air flow when the air flow passes, so as to increase the heat dissipation efficiency \u3002 The wave crest and wave trough of the heat sink of the invention are preferably linear, so as to increase the contact area between the heat sink and the electrode, promote the heat conduction efficiency, and increase the heat dissipation effect. Moreover, the electrode of the heat sink of the invention is in frame shape and around the heat sink, the wave crest and wave valley of the heat sink are close to the inner side of the electrode, and the PTCR resistance sheet is close to the outer side of the electrode, which is conducive to assembling and forming the PTC heat source with different power configuration according to the demand.
【技术实现步骤摘要】
一种PTC热源
本专利技术属于加热装置,具体涉及一种PTC热源,主要用于取暖器上配合风机实现取暖。
技术介绍
现有PTC加热器由PTCR(正温度系数热敏电阻,positivetemperaturecoefficientresistance)电阻片和散热片组成,其中散热片的形状大多数为波浪形,此形状的散热片散热面积小,散热效果不佳,而且与PTCR电阻片的导热面积小,不利于散热。此外,现有PTC加热器的散热片多为铝及铝合金材料,铝及铝合金材料导热系数小(155-237W/M.K),散热效率低,散热效果不佳。
技术实现思路
本专利技术要解决的技术问题和提出的技术任务是克服现有PTC加热器的散热片散热面积小的缺陷,提供一种散热效率高的PTC热源,并在此基础上增大散热片与PTCR电阻片的导热面积,提高散热效果。为达到上述目的,本专利技术的PTC热源,包括PTCR电阻片、电极、波形散热片,所述散热片具有波峰、波谷,相邻的波峰之间及相邻的波谷之间形成通风间隙,所述电极的一侧面紧贴在所述PTCR电阻片上与所述PTCR电阻片导电,所述电极的另一侧面紧贴在所述的散热片上与所述散热片导热,其特征是:所述散热片具有突出在所述通风间隙内的散热凸台。作为优选技术手段:所述的散热凸台与散热片之间保持有辅助通风间隙。作为优选技术手段:所述的散热凸台是从所述散热片上冲裁形成。作为优选技术手段:所述散热凸台在所述通风间隙的延伸方向上分布有至少两个。作为优选技术手段:所述的波峰、波谷呈直 ...
【技术保护点】
1.一种PTC热源,包括PTCR电阻片、电极、波形散热片,所述散热片具有波峰、波谷,相邻的波峰之间及相邻的波谷之间形成通风间隙,所述电极的一侧面紧贴在所述PTCR电阻片上与所述PTCR电阻片导电,所述电极的另一侧面紧贴在所述的散热片上与所述散热片导热,其特征是:所述散热片具有突出在所述通风间隙内的散热凸台。/n
【技术特征摘要】
1.一种PTC热源,包括PTCR电阻片、电极、波形散热片,所述散热片具有波峰、波谷,相邻的波峰之间及相邻的波谷之间形成通风间隙,所述电极的一侧面紧贴在所述PTCR电阻片上与所述PTCR电阻片导电,所述电极的另一侧面紧贴在所述的散热片上与所述散热片导热,其特征是:所述散热片具有突出在所述通风间隙内的散热凸台。
2.根据权利要求1所述的PTC热源,其特征是:所述的散热凸台与散热片之间保持有辅助通风间隙。
3.根据权利要求2所述的PTC热源,其特征是:所述的散热凸台是从所述散热片上冲裁形成。
4.根据权利要求1所述的PTC热源,其特征是:所述散热凸台在所述通风间隙的延伸方向上分布有至少两个。
5.根据权利要求1所述的PTC热源,其...
【专利技术属性】
技术研发人员:孙德富,卢滨亮,
申请(专利权)人:奥普家居股份有限公司,
类型:发明
国别省市:浙江;33
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