ADSORPTION PUMP Russian patent published in 2003 - IPC

FIELD: cryogenic engineering. SUBSTANCE: pump designed for maintaining vacuum by absorbing gas molecules from enclosed spaces has double-wall heat-insulated tank holding refrigerant. Heater is placed inside this tank. Adsorbent is secured on inner wall of tank. Pump also has priming and drain pipelines and sampling pipeline whose inlet end is disposed in tank. Newly introduced in pump is circulation booster made in the form of turbine wheel placed in sealed casing. Turbine-wheel shaft carries blades disposed on its outer surface at butt-ends. Circulation booster is mounted inside inlet end of sampling pipeline. EFFECT: improved adsorbent cooling stability at refrigerant liquid phase temperature; enhanced efficiency of adsorbent and heat insulation in sampling cryogenic product. 2 dwg