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    • 15. 发明授权
    • Apparatus and method for cooling super conductive body
    • 用于冷却超导体的装置和方法
    • US07370481B2
    • 2008-05-13
    • US11532527
    • 2006-09-16
    • Kuniaki KawamuraAkito MachidaMasamitsu IkeuchiKazuhiro HattoriKouichi MatsuoHideharu Yanagi
    • Kuniaki KawamuraAkito MachidaMasamitsu IkeuchiKazuhiro HattoriKouichi MatsuoHideharu Yanagi
    • F17C5/00F25D23/12H01B12/00H01F6/06
    • F25J1/0015F25C1/00F25D3/10F25J1/0221F25J1/0251F25J1/0276F25J2205/20F25J2205/30F25J2205/90F25J2210/42F25J2240/60
    • Liquid nitrogen is filled in a low temperature vessel; an ejector that sucks liquid nitrogen by blowing a cooling agent (liquid or gas) such as low temperature helium gas or liquid helium of pressure higher than in the space within the vessel is disposed in the vessel; the liquid nitrogen blown with the cooling agent is cooled by the cooling agent to become fine particles of solid nitrogen which fall down; and gas in a space of the vessel is discharged out of the vessel so as to maintain the pressure of the space higher than the atmospheric pressure. A gaseous phase of liquid nitrogen in an adiabatic vessel is depressurized to vaporize nitrogen in a liquid phase so that the temperature of the nitrogen reaches the triple point of nitrogen by lowering the temperature to thereby produce solid nitrogen by keeping the temperature at the triple point, and that the produced solid nitrogen is transformed into slush by stirring the content of the adiabatic vessel. A super conductive body formed of a material exhibiting a state of super conductance in the vicinity of the temperature of liquid nitrogen or of the temperature where liquid nitrogen and solid nitrogen coexist can be cooled by immersing the body in slush nitrogen held in an adiabatic vessel or flowing in an adiabatic pipe.
    • 液氮填充在低温容器中; 喷射器通过吹送诸如低温氦气或低于容器内的空间的压力的液氦的冷却剂(液体或气体)而吸入液氮; 用冷却剂吹入的液氮被冷却剂冷却,成为脱落的固体氮的细小颗粒; 并且将容器的空间中的气体排出容器,以保持空间的压力高于大气压力。 将绝热容器中的氮气气相减压以使液相中的氮气蒸发,使得氮气的温度通过降低温度而达到氮的三重点,从而通过将温度保持在三重点来产生固体氮, 并且通过搅拌绝热容器的内容物将所产生的固体氮转变成泥浆。 在液氮温度附近或液氮和固态氮共存的温度下表现出超导状态的材料形成的超导体可以通过将本体浸入保持在绝热容器中的冰冷氮气中来冷却,或 在绝热管中流动。
    • 17. 发明授权
    • Ammonia refrigerating machine, working fluid composition and method
    • 氨制冷机,工作液组成及方法
    • US5688433A
    • 1997-11-18
    • US675513
    • 1996-07-03
    • Keisuke KasaharaKuniaki KawamuraTakashi KaimaiHisashi Yano
    • Keisuke KasaharaKuniaki KawamuraTakashi KaimaiHisashi Yano
    • C09K5/04C10M107/34C10M171/00F25B1/00F25B31/00C10M105/18
    • C10M107/34C10M171/008F25B31/002C10M2209/107C10N2240/00C10N2240/22C10N2240/30C10N2240/50C10N2240/52C10N2240/54C10N2240/56C10N2240/58C10N2240/60C10N2240/66F25B2400/13F25B2400/23
    • The present invention provides a working fluid composition for a refrigerating machine obtained by mixing an ammonia refrigerant with a lubricating oil which is extremely excellent in solubility with the ammonia refrigerant, and a method for lubricating a refrigerating machine suitable for the use of the working fluid composition. The working fluid composition comprises a mixture of ammonia and one or more kinds of polyether compounds represented by the formula (I); the refrigerating machine is characterized by constituting a refrigerating cycle or a heat pump cycle through which the working fluid composition is circulated; and the method for lubricating a refrigerating compressor is characterized by lubricating the ammonia refrigerant compressor with the lubricating oil comprising one or more kinds of ether compounds represented by the formula (I) R.sub.1 --�--O--(PO).sub.m --(EO).sub.n --R.sub.2 !.sub.x (I) wherein R.sub.1 is a hydrocarbon group having 1 to 6 carbon atoms, R.sub.2 is an alkyl group having 1 to 6 carbon atoms, PO is an oxypropylene group, EO is an oxyethylene group, x is an integer of from 1 to 4, m is a positive integer, and n is 0 or a positive integer.
    • PCT No.PCT / JP92 / 01551 Sec。 371日期1994年1月7日 102(e)日期1994年1月7日PCT 1991年11月27日PCT公布。 第WO94 / 12594号公报 日本1994年6月9日本发明提供了一种通过将氨制冷剂与氨制冷剂的溶解度极好的润滑油混合而获得的制冷机的工作流体组合物,以及适用于使用的冷冻机的润滑方法 的工作流体组成。 工作流体组合物包含氨和由式(I)表示的一种或多种聚醚化合物的混合物; 制冷机的特征在于构成工作流体组合物循环的制冷循环或热泵循环; 冷冻压缩机的润滑方法的特征在于,利用含有式(I)表示的一种或多种醚化合物的润滑油润滑氨制冷剂压缩机R1 - [ - O-(PO)m-(EO)n -R2] x(I)其中R1是具有1至6个碳原子的烃基,R2是具有1至6个碳原子的烷基,PO是氧化丙烯基,EO是氧化乙烯基,x是从 1〜4,m为正整数,n为0或正整数。