| 摘要 |
1,198,988. Thermocouples. G. V. PLANER Ltd. 22 Aug., 1967 [31 Aug., 1966], No. 38946/66. Heading H1K. A thermoelectric module, as used in power generators and refrigerators, consisting of pairs of thermo-electric bodies (e.g. P and N type semi-conductors) linked by conductive connectors, is made by the following method. The bodies 11a, 12a are set up in parallel spacedapart relationship and an insulating encapsulant 13 is cast around and between them to form external walls 16 and internal walls 15. This is done in such a way that the walls extend beyond the ends of the bodies, except at locations such as 14 where adjacent bodies are to be interconnected. This leaves a plurality of cavities into which metallic material is then deposited to interconnect the bodies. The cavities may be formed by any of the following techniques: (a) casting the encapsulant to the level of the ends of the bodies, removing the body ends, e.g. by shot blasting or etching without removing the insulant and then removing the portions 14; (b) casting as in (a) but then, e.g. by use of a multi-head ultrasonic drilling tool, removing all the body ends and the portions 14 in one operation; (c) fitting "false" connectors to the body ends before encapsulating, encapsulating to the level of the false connectors and removing the latter after encapsulation. The metallic material inserted in the cavities may be Au, Cu or Ni deposited by electroplating or flame or plasma spraying. |
