ADSORPTION PUMP Russian patent published in 2003 - IPC

FIELD: cryogenic engineering. SUBSTANCE: pump designed to maintain vacuum by absorbing gas molecules in enclosed spaces has double-wall tank with drain and priming pipelines and heat insulation disposed in inter-wall space. Cooled shield is mounted on supports. Adsorbent is secured on inner wall of tank. The latter is provided with intermediate chambers disposed inside supports. Shield has channel communicating with intermediate chambers. Drain and priming pipelines are installed in one of intermediate chambers. EFFECT: enhanced pumping characteristics due to reduced heat inleak. 1 dwg