发明授权
US5323967A Steam injector 失效
蒸汽喷射器

Steam injector
摘要:
A steam injector includes a casing having water supply port and a steam intake port, the casing being generally composed of two halves fastened integrally, a water nozzle and a steam nozzle both disposed in the casing and communicated with the water supply port and the steam intake port, respectively, a steam-water mixing nozzle disposed on the downstream side in the casing and a diffuser disposed further downstream side in the casing. The steam injector further includes a guide member such as guide vane or spacer ring for guiding the steam to the steam-water mixing nozzle. The steam injector may includes a needle valve disposed in a steam jetting nozzle, disposed axially in the central portion of the casing, which is provided with a heat transfer preventing structure such as hollow wall structure provided on the outer peripheral surface of the steam jetting nozzle. The water nozzle may be composed of a wear resisting material and the wear resisting material may be provided on the surfaces of the steam jetting nozzle and the diffuser.
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