CRYOGENIC FLUID CIRCULATION TYPE COOLING SYSTEM

To provide a cryogenic fluid circulation type cooling system capable of suppressing wasteful consumption of a cooling fluid by eliminating need to discharge air bubbles generated by evaporation of a cooling fluid at the time of precooling or operating a pump, to an outside.SOLUTION: A pump 2A is pro...

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Bibliographische Detailangaben
Hauptverfasser:	HIROKAWA MASAKI, ISHII MASATERU, OZAKI SHINSUKE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING REFRIGERATORS WEAPONS
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Beschreibung
Zusammenfassung:	To provide a cryogenic fluid circulation type cooling system capable of suppressing wasteful consumption of a cooling fluid by eliminating need to discharge air bubbles generated by evaporation of a cooling fluid at the time of precooling or operating a pump, to an outside.SOLUTION: A pump 2A is provided on a path in a vacuum insulation container 11 in a second closed flow channel CP2, and a circulation pump driving motor part 22 and a circulation pump part 23 constituting the pump 2A are installed in the vacuum insulation container 11 so that a pump main shaft 24 connecting an impeller 21 in the circulation pump part 23 to the circulation pump driving motor part 22 is made into a minor axis structure. The impeller 21 in the circulation pump part 23 is arranged below a lowest part of a secondary heat exchanger 13 and a flow channel CP2that connects the circulation pump part 23 and the secondary heat exchanger 13.SELECTED DRAWING: Figure 1 【課題】ポンプ予冷時あるいは運転時に冷却液が気化することにより生じた気泡を外部に排出する必要をなくして冷却液の浪費を抑えることができる極低温流体循環式冷却システムを提供する。【解決手段】第２の閉流路ＣＰ２の真空断熱容器１１内の経路にポンプ２Ａが設けられ、それを構成する循環ポンプ駆動用モータ部２２及び循環ポンプ部２３をともに真空断熱容器１１内に設置することで、循環ポンプ部２３内のインペラ２１と、循環ポンプ駆動用モータ部２２とを接続するポンプ主軸２４を短軸構造とする。循環ポンプ部２３内部のインペラ２１が、副熱交換器１３と、循環ポンプ部２３及び副熱交換器１３を連結する流路ＣＰ２ＬＯＷと、の最低部より下側に配置する。【選択図】図１