公开(公告)号：US3740592A

公开(公告)日：1973-06-19

申请号：US3740592D

申请日：1970-11-12

Applicant: ENERGY RES CORP

Inventor： ENGDAHL R ,  BEDELL J

IPC: H01J45/00

CPC classification number: H01J45/00

Abstract: A thermionic converter is provided in which a protective silicon carbide shell is provided around the refractory metal emitter of the converter to shield it from the hot gases of a fossil fuel heat source and prevent oxidation of the emitter. The silicon carbide shell is spaced from the emitter so that stresses are not set up which would cause crackling or breaking of the shell. Heat transfer between the protective shell and the emitter is effected by means of a metal conductor which is liquid at the operating temperature of the converter. To obtain a long-life unit the silicon carbide shell is formed by uniformly depositing silicon carbide on the outer surface of a rotating, heated graphite mandrel.

Abstract translation: 提供了一种热电转换器，其中在转换器的难熔金属发射器周围设置保护性碳化硅外壳，以将其与化石燃料热源的热气体隔离，并防止发射体氧化。 碳化硅壳与发射器间隔开，使得不会施加应力，这将引起壳的裂纹或破裂。 保护壳和发射极之间的热传递通过在转换器工作温度下为液体的金属导体来实现。 为了获得长寿命单元，通过在旋转的加热的石墨心轴的外表面上均匀沉积碳化硅来形成碳化硅外壳。