ADSORPTION PUMP Russian patent published in 2003 - IPC

FIELD: cryogenic engineering. SUBSTANCE: invention is designed for use in cryogenic equipment for maintaining vacuum by absorption of molecules of gases in closed volumes. Proposed pump contains double-walled container with cooled screen with channel to let out vapor phase of cryogenic product. Adsorbent is secured on inner wall of container. Cooled screen is provided with element to take off drop medium arranged in channel to let out vapor phase of cryogenic product, and with partitions. Drop medium take-off element is made in form of spiral tape made of capillary-porous material. Each partition is provided with perforated section. Perforated section of each following partition is arranged diametrically opposite relative to perforated section of preceding partition. EFFECT: improved cooling of screw which is designed to decrease heat flows to adsorbent and cryogenic product. 1 dwg