专利名称：Positive temperature coefficient ceramic
heating element for heating a fluid
发明人：Ching-Jui Ting,Cheng-Jien Peng申请号：US07/150785申请日：19880129公开号：US04855571A公开日：19890808
摘要：An electric resistance heating element for heating fluids includes a plurality ofring-shaped members made of a ceramic material having a positive temperaturecoefficient (PTC) disposed in concentric generally coplanar relationship, one around theother, and spaced apart from each other to form through passages for fluid flowtherebetween. Electrode layers are formed at the two opposite ends of each ring and apair of electrically conductive securing ring members are each securely soldered to arespective one of the electrode layers. Each securing ring member is integrally formedwith two diametrical cross members soldered to each ceramic ring-shaped members andwith each cross member having spaced grooves radially engaging and positioning thering-shaped ceramic members. The outer periphery of each securing ring memberincorporates a plurality of radially extending lugs for mounting the heating element foruse and for making electrical connection between the securing ring member and a powersupply.
申请人：INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
代理机构：Ladas & Parry
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