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    • 24. 发明专利
    • Multistage compression type rotary compressor
    • 多级压缩式旋转式压缩机
    • JP2007162663A
    • 2007-06-28
    • JP2005363820
    • 2005-12-16
    • Sanyo Electric Co Ltd三洋電機株式会社
    • MATSUMOTO KENZOMATSUMORI HIROYUKISATO TAKASHISAITO TAKAYASU
    • F04C18/356F04C23/00F04C28/02F04C28/24
    • PROBLEM TO BE SOLVED: To provide an internal high pressure type multistage compression rotary compressor capable of achieving stable operation by avoiding beforehand the occurrence of a vane jump of a second rotary compression element.
      SOLUTION: This multistage compression type rotary compressor comprises a communicating passage 100 serving for communication between a region of intermediate pressure and a region of low pressure which is the intake pressure of a first rotary compression element 32, and a valve device 117 for opening/closing the communicating passage 100. High pressure is applied as the back pressure of a vane 50, and the valve device 117 opens the communicating passage 100 when the pressure difference between the intermediate pressure and low pressure is enlarged to a predetermined upper limit value before the intermediate pressure reaches high pressure.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:提供一种能够通过避免第二旋转压缩元件的叶片跳跃的发生而能够实现稳定操作的内部高压型多级压缩旋转式压缩机。 解决方案:该多级压缩式旋转压缩机包括用于中间压力区域和作为第一旋转压缩元件32的进气压力的低压区域之间连通的连通通道100和用于 打开/关闭连通通道100.作为叶片50的背压施加高压,当中间压力和低压之间的压力差扩大到预定的上限值时,阀装置117打开连通通道100 在中压达到高压之前。 版权所有(C)2007,JPO&INPIT
    • 26. 发明专利
    • Two-stage screw compressor
    • 两级螺旋压缩机
    • JP2006138286A
    • 2006-06-01
    • JP2004330406
    • 2004-11-15
    • Hitachi Ltd株式会社日立製作所
    • KATO EISUKEHIOKI YASUHIROURASHIN MASAYUKI
    • F04C18/16F04C28/02F04C28/06F04C28/08
    • PROBLEM TO BE SOLVED: To provide a two-stage screw compressor highly reliable and capable of being surely started when used in a refrigerating cycle consisting of a plurality of compressors.
      SOLUTION: The two-stage screw compressor 50 comprises a low-stage compressor 51 having a low-stage compression mechanism part 2 stored in a low-stage casing 1, a high-stage compressor 53 having a high-stage compression mechanism part 3 stored in a high-stage casing 4, and an intermediate-stage casing 85 for communicating a discharge port 63 of the low-stage compression mechanism part 2 with a suction port 68 of the high-stage compression mechanism part 3. In the high-stage casing 4, a first bypass line 82 and a first piston valve 84 are provided for bypassing refrigerant gas discharged from the discharge port 69 of the high-stage compression mechanism part 3 to the suction side of the high-stage compression mechanism part 3 when starting the compressor and for closing themselves after completing the start of the compressor.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种两级螺杆压缩机,其可靠性高,并且能够在由多个压缩机组成的制冷循环中使用时可靠地启动。 解决方案:两级螺杆式压缩机50包括:低级侧压缩机51,其具有储存在低级壳体1中的低级侧压缩机构部2;高级侧压缩机53,具有高级侧压缩机构 存储在高级壳体4中的部分3和用于使低级压缩机构部2的排出口63与高级侧压缩机构部3的吸入口68连通的中间级壳体85. 高级外壳4设置有第一旁通管线82和第一活塞阀84,用于将从高级侧压缩机构部3的排出口69排出的制冷剂气体旁通到高压侧压缩机构部的吸入侧 3启动压缩机并在完成压缩机启动后关闭自己。 版权所有(C)2006,JPO&NCIPI
    • 28. 发明专利
    • Refrigeration cycle apparatus
    • 制冷循环装置
    • JP2006046114A
    • 2006-02-16
    • JP2004225889
    • 2004-08-02
    • Toshiba Kyaria Kk東芝キヤリア株式会社
    • SATODATE KOJITOMINAGA TAKESHI
    • F04C29/12F04C18/356F04C23/00F04C28/02F25B1/00
    • F04C18/3564F04C23/001F04C23/008
    • PROBLEM TO BE SOLVED: To provide a refrigeration cycle apparatus equipped with a rotary compressor ensuring sealing performance of a check valve mechanism, inhibiting the apparatus from increasing in size and allowing silent operation.
      SOLUTION: The apparatus has a pressure changing mechanism 30 for changing connection to a high pressure side or to a low pressure side of a refrigeration cycle with respect to a cylinder chamber 14b forming one compression mechanism section 2B of the rotary compressor R. When a load is large, a low pressure refrigerant is introduced into the cylinder chamber for normal compression operation and when the load is small, a high pressure refrigerant is introduced to the cylinder chamber for non compression operation. The pressure changing mechanism comprises a high pressure introduction passage 30 connecting the high pressure side and the cylinder chamber and having a shut-off valve 47 in the middle, an inlet refrigerant pipe 16b connecting the low pressure side and the cylinder chamber and guiding the lower pressure refrigerant to the chamber and the check valve mechanism 35 constituted of valve seats 36, 40 and a valve element 43 provided at a connection between the high pressure introduction passage and the inlet refrigerant pipe for closing an inlet passage by pressure difference between the high pressure refrigerant and the low pressure refrigerant when the shut-off valve is opened.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种配备有确保止回阀机构的密封性能的旋转压缩机的制冷循环装置,能够抑制装置的尺寸增大和无声操作。 解决方案:该装置具有用于改变与形成旋转压缩机R的一个压缩机构部分2B的气缸室14b的制冷循环的高压侧或低压侧的连接的压力改变机构30。 当负载大时,低压制冷剂被引入气缸室以进行正常的压缩操作,并且当负载较小时,高压制冷剂被引入气缸室用于非压缩操作。 压力改变机构包括连接高压侧和气缸室的高压引入通道30,并且在中间具有截止阀47,连接低压侧和气缸室的入口制冷剂管16b以及引导下部 压力制冷剂到腔室和由阀座36,40构成的止回阀机构35和设置在高压引入通道和入口制冷剂管道之间的连接处的阀元件43,用于通过高压压力差 制冷剂和截止阀打开时的低压制冷剂。 版权所有(C)2006,JPO&NCIPI
    • 29. 发明专利
    • Hybrid compressor
    • 混合压缩机
    • JP2006029256A
    • 2006-02-02
    • JP2004211409
    • 2004-07-20
    • Sanden Corpサンデン株式会社
    • TSUKAGOSHI MASAYOSHI
    • F04B41/06F04B39/12F04C18/02F04C23/00F04C23/02F04C28/02F04C29/12
    • F04C2240/45
    • PROBLEM TO BE SOLVED: To provide a compressor excellent in startability by reducing start torque while preventing a device from getting upsized.
      SOLUTION: This hybrid compressor is provided with a first compression mechanism and a second compression mechanism including exclusive drive sources respectively and being selectively or simultaneously driven, and has fluid compressed by each compression mechanism delivered to same delivery chamber via exclusive first delivery passage and a second delivery passage. A fluid introduction mechanism introducing a part of delivery fluid from a delivery side of the first compression mechanism driven by a drive source generating large drive torque to a second delivery passage at the time of the second compression mechanism driven by a drive source generating small drive torque is stopped is provided.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:通过降低启动扭矩来提供具有优异的起动性的压缩机,同时防止装置升高。 解决方案:该混合式压缩机具有第一压缩机构和第二压缩机构,该第一压缩机构和第二压缩机构分别包括专用的驱动源,并且被选择性地或同时地驱动,并且被各个压缩机构经由独特的第一输送通道 和第二输送通道。 一种流体引入机构,在由驱动源驱动的第二压缩机构时,将来自由驱动源驱动的第一压缩机构的输送侧的一部分输送流体引入到第二输送通道,该第二压缩机构由驱动源驱动而产生较小的驱动转矩 被提供。 版权所有(C)2006,JPO&NCIPI
    • 30. 发明专利
    • Multistage dry-sealed vacuum pump
    • 多种干密封真空泵
    • JP2005155540A
    • 2005-06-16
    • JP2003397520
    • 2003-11-27
    • Aisin Seiki Co Ltdアイシン精機株式会社
    • NAITO YOSHIHIRO
    • F04B49/06F04C18/12F04C23/00F04C25/02F04C28/02F04C28/26F04C29/10
    • F04C28/26F04C18/126F04C23/001F04C25/02F04C2220/12
    • PROBLEM TO BE SOLVED: To provide a multistage dry-sealed vacuum pump in which even though inlet pressure of a gas to be evacuated is high, a high pumping-speed is maintained and low power-consumption can be achieved.
      SOLUTION: The multistage dry-sealed vacuum pump comprises an intermediate discharge pipe 30 of which one end is allowed to communicate with a discharge port 28 of a 3rd-stage pump chamber 10, and the other end is opened to the outside, and a check valve 32 which is provided midway in the intermediate discharge pipe 30, and has the atmospheric side as forward direction. In the case when suction pressure of the gas sucked from a main suction port 3 is comparatively high, e.g. discharge pressure of the 3rd-stage pump chamber 10 is higher than the atmospheric pressure, the check valve 32 is opened to release the pressure to the atmosphere from the intermediate discharge pipe 30. Thus, the suction pressure of a 4th-stage pump chamber 11 does not become higher than the atmospheric pressure. Consequently, even though the gas is sucked/discharged at a comparatively high suction pressure, the pumping speed is not decreased.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供即使被抽空气体的入口压力高的多级干式密封真空泵,保持高的泵送速度并且可以实现低的功率消耗。 解决方案:多级干式密封真空泵包括中间排出管30,其一端与第三级泵室10的排出口28连通,另一端向外开放, 以及设置在中间排出管30中途的止回阀32,其大气侧为正向。 在从主吸入口3吸入的气体的吸入压力比较高的情况下, 第3级泵室10的排出压力高于大气压,止回阀32打开,从中间排出管30释放向大气的压力。因此,第4级泵室11的吸入压力 不会变得高于大气压力。 因此,即使在比较高的吸入压力下吸入/排出气体,也不会降低泵送速度。 版权所有(C)2005,JPO&NCIPI