ADSORPTION PUMP Russian patent published in 2003 - IPC

FIELD: cryogenic engineering. SUBSTANCE: pump designed to maintain vacuum by absorbing gas molecules in enclosed space has double-wall tank with drain and priming pipelines. Adsorbent is disposed in inter-wall space on external side of tank internal wall. Tank is provided with internal shell that forms additional inter-wall space. At least one hole is made in bottom part of internal shell. Priming pipeline has valve and communicates in top part of tank with internal shell. Drain pipeline communicates with additional inter-wall space. The latter accommodates level gage ganged with valve. Pump incorporates provision for regulating adsorbent cooling at cryogenic-product liquid phase temperature. EFFECT: enhanced pumping characteristics. 1 dwg