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    • 1. 发明专利
    • Scroll type fluid machinery
    • 滚动式流体机械
    • JP2009057897A
    • 2009-03-19
    • JP2007226065
    • 2007-08-31
    • Hitachi Ltd株式会社日立製作所
    • IWANO KIMINOBUFUKUI KOJISUEFUJI KAZUTAKAKOBAYASHI YOSHIO
    • F04C18/02F04C29/00
    • PROBLEM TO BE SOLVED: To improve the workability and productivity in assembling by determining the film thickness of a covering layer by determining the radial gap between lap parts from a measurement value.
      SOLUTION: Out of lap parts 2B, 3B of a fixed scroll 2 and a turning scroll 3, a sealing coating layer 24 is formed on the circumferential surface of one of the lap parts 2B. The eccentricity ε of the turning scroll 3, and the pitch L of the adjacent lap parts 2B in the fixed scroll 2 are measured and determined. The tooth thickness ts of the lap parts 2B and the tooth thickness tp of the lap parts 3B are also measured and determined. The radial gap δ of the portion disposed most adjacently out of the radial gaps formed between the lap parts 2B, 3B is measured and determined before formation of the coating layer 24. The thickness tck of the covering layer 24 is determined according to the radial gap δ determined thereby.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:通过从测量值确定搭接部件之间的径向间隙,通过确定覆盖层的膜厚度来提高组装中的可加工性和生产率。 解决方案:在固定涡卷2和转动涡卷3的搭接部分2B,3B之间,在一个搭接部分2B的圆周表面上形成密封涂层24。 旋转涡旋件3的偏心率ε和固定涡旋件2中的相邻搭接部2B的间距L被测定和确定。 也测量并确定搭接部分2B的齿厚度ts和搭接部分3B的齿厚tp。 在形成包覆层24之前测量并确定在搭接部件2B,3B之间形成的径向间隙最靠近设置的部分的径向间隙δ。覆盖层24的厚度tck根据径向间隙 δ。 版权所有(C)2009,JPO&INPIT
    • 2. 发明专利
    • Scroll type fluid machine
    • 滚筒式流体机
    • JP2009024705A
    • 2009-02-05
    • JP2008281442
    • 2008-10-31
    • Hitachi Ltd株式会社日立製作所
    • FUKUI KOJISUEFUJI KAZUTAKASAKAMOTO SUSUMU
    • F04C18/02
    • PROBLEM TO BE SOLVED: To reduce noise by decreasing the number of projections becoming closest to a counter lap part at the same timing by disposing the projections in the lap part at non-constant intervals.
      SOLUTION: A plurality of outer circumferential projections 14 are formed on the outer circumferential surface 3B of the lap part 3 of a fixed scroll 1, and a plurality of outer circumferential projections 15 are formed at the outer circumferential surface 12B of the lap part 12 of a rotary scroll 10. An angle θ between the adjoining projections 14 (projections 15) is gradually reduced from the outer diameter side of the lap parts 3, 12 toward the inner diameter side. When a compressor is operated, the projections 14 and 15 become closest to the counter lap parts 12 and 3 at a closure position of each compression chamber 13 for enhancing the seal performance of the compression chamber 13. The timing of each of the projections 14 and 15 to be the closest can be sifted from each other and the timing of the generation of noise generated when they are closest can thus be dispersed in terms of time.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:通过以不间断的间隔将突出部分布置在搭接部分中,通过减少在相同的时刻最接近计数器部分的突起的数量来减少噪音。 解决方案:在固定涡旋件1的搭接部3的外周面3B上形成有多个外周突起14,并且在搭接部的外周面12B形成有多个外周突起15 旋转涡旋件10的第二部分12相邻的突起14(突起15)之间的角度θ从搭接部分3,12的外径侧向内径侧逐渐减小。 当压缩机被操作时,突起14和15在每个压缩室13的关闭位置处变得最靠近计数器搭接部分12和3,以增强压缩室13的密封性能。每个突起14和 15可以彼此筛选,并且当它们最接近时产生的噪声的产生的时间因此可以在时间上分散。 版权所有(C)2009,JPO&INPIT
    • 4. 发明专利
    • Control device of compressor
    • 压缩机控制装置
    • JP2009156208A
    • 2009-07-16
    • JP2007336972
    • 2007-12-27
    • Hitachi Ltd株式会社日立製作所
    • HIRASAWA TAKAHISAFUKUI KOJISUEFUJI KAZUTAKA
    • F04B49/06
    • PROBLEM TO BE SOLVED: To reduce electric power consumption by controlling operating frequency of a compressor to be constant. SOLUTION: A control circuit 9 estimates stopping time Tb while pressure P in a tank 5 is lowered down to a pressure lower limit value Pmin and reopens operation when the air compressor 1 in operation is stopped. Thereafter, the control circuit 9 adds up operating time Ta up to the current time and the estimated stopping time Tb and stops a compressor body 3 when this added time is larger than a time threshold Ts. Additionally, the control circuit 9 corrects a next time threshold Ts in accordance with error time Er when the error time Er occurs between the estimated stopping time Tb and actual stopping time Tb'. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:通过将压缩机的工作频率控制为恒定来降低功耗。 解决方案:控制电路9估计在罐5中的压力P降低到压力下限值Pmin的停止时间Tb,并且当空气压缩机1运行停止时重新开启操作。 此后,控制电路9将当前时间的运行时间Ta和估计的停止时间Tb相加,并且当该相加时间大于时间阈值Ts时,停止压缩机主体3。 此外,当在估计停止时间Tb和实际停止时间Tb'之间发生错误时间Er时,控制电路9根据错误时间Er校正下一个时间阈值Ts。 版权所有(C)2009,JPO&INPIT
    • 5. 发明专利
    • Scroll type fluid machine
    • 滚筒式流体机
    • JP2008185020A
    • 2008-08-14
    • JP2007021924
    • 2007-01-31
    • Hitachi Ltd株式会社日立製作所
    • IWANO KIMINOBUFUKUI KOJIKOMAI YUJISUEFUJI KAZUTAKASAKAMOTO SUSUMU
    • F04C18/02
    • PROBLEM TO BE SOLVED: To sufficiently expand a suction path while securing mechanical strength.
      SOLUTION: A fixed scroll 2 is provided with a spiral lap part 4 erectly provided on a surface of an end plate 3 and a cylindrical outer circumference wall part 5 provided on an outer diameter side of the end plate 3 with the lap part 4 surrounded. The fixed scroll 2 is provided with a suction port 20 positioned on an outer diameter side of a turning scroll 8 and opening to an outer circumference wall part 5 from an outer diameter side of the end plate 3. The suction path 23 introducing air from the suction port 20 to a compression chamber 19 on the outermost diameter side is formed between the suction port 20 and a winding terminal end of a lap part 10 of the turning scroll 8. The end plate 3 is provided with a recessed groove 24 positioned in a non-sliding area where a chip seal 13 of the turning scroll 8 does not slide in the suction path 23 and extending along the suction path 23. Consequently, passage area of the suction path 23 can be extended by using the recessed groove 24.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:在确保机械强度的同时充分膨胀吸入路径。 解决方案:固定涡旋件2设置有直立设置在端板3的表面上的螺旋搭接部4和设置在端板3的外径侧上的圆筒形外周壁部5, 4包围 固定涡旋盘2设置有位于转动涡卷8的外径侧的吸入口20,并且从端板3的外径侧向外周壁部5开口。吸入路径23将来自 在最外径侧的压缩室19的吸入口20形成在旋转涡旋件8的吸入口20和搭接部10的卷绕终端之间。端板3设置有凹槽24,凹槽24位于 旋转涡旋件8的切屑密封件13在吸入路径23中不滑动并且沿着吸入路径23延伸的非滑动区域。因此,可以通过使用凹槽24来延长吸入路径23的通过面积。 P>版权所有(C)2008,JPO&INPIT
    • 6. 发明专利
    • Scroll type fluid machine
    • 滚筒式流体机
    • JP2006152961A
    • 2006-06-15
    • JP2004346748
    • 2004-11-30
    • Hitachi Ltd株式会社日立製作所
    • IKEDA HIDEAKIKOMAI YUJISUEFUJI KAZUTAKAFUKUI KOJI
    • F04C18/02F04C29/04
    • PROBLEM TO BE SOLVED: To increase heat resistance by providing a radial cooling air passage at a fitting part of a boss part of a scroll and a drive shaft and suppressing heat conduction from a boss part to a drive shaft.
      SOLUTION: A drive shaft 31 driven by a motor 27 is fitted to a boss part 17B of a turning scroll 12B. Boss part side cooling air passages 25, 26 are provided on a boss part 17A and a shaft part side cooling air passage 41 communicating with the cooling air passages 25, 26 is provided on a drive shaft 31. Part of cooling air generated by a cooling fan 47B is circulated in each cooling air passage 25, 26, 41 at a time of operation of a compressor. Consequently, since the fitting part of the boss part 17B and the drive shaft 31 can be efficiently cooled from inside and section area thereof can be made small at positions of each cooling air passage 5, 26, 41, heat conduction from the boss part 17B to the drive shaft 31 can be suppressed.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:通过在涡旋件的凸起部分和驱动轴的配合部分设置径向冷却空气通道并抑制从凸台部分到驱动轴的热传导来提高耐热性。 解决方案:由马达27驱动的驱动轴31与转动涡旋件12B的凸台部17B嵌合。 凸起部分侧冷却空气通道25,26设置在凸台部分17A上,并且与冷却空气通道25,26连通的轴部侧冷却空气通道41设置在驱动轴31上。由冷却产生的冷却空气的一部分 风扇47B在压缩机运转时在各冷却风路25,26,41中循环。 因此,由于能够从内侧高效地冷却凸台部17B和驱动轴31的嵌合部,因此,能够使各冷却风路5,26,41的各个冷却风路5,26,41的部分面积小,从凸部17B 可以抑制驱动轴31。 版权所有(C)2006,JPO&NCIPI
    • 7. 发明专利
    • Scroll fluid machine
    • 滚动流体机
    • JP2006017100A
    • 2006-01-19
    • JP2004346745
    • 2004-11-30
    • Hitachi Ltd株式会社日立製作所
    • FUKUI KOJISUEFUJI KAZUTAKAKOMAI YUJIIKEDA HIDEAKISAKAMOTO SUSUMU
    • F04C18/02F04C29/04
    • PROBLEM TO BE SOLVED: To provide a groove suppressing transmission of heat generated in a compression chamber to a drive shaft from a boss part of a scroll. SOLUTION: A plurality of compression chambers 16A are defined by a lap part 7A of a fixed scroll 5A and a lap part 15A of a turning scroll 13A. A drive shaft 31 driven by a motor 27 is fitted on the boss part 19A of the turning scroll 13A. An elongated groove 21A and a recess part 24A are provided on the boss part 19A and a circumference groove 36A is provided on the drive shaft 31. Consequently, since spaces 22A, 25A, 37A in a radial direction and an axial direction can be formed between the boss part 19A and the drive shaft 31, it is prevented that heat generated in the compression chamber 16A side is transmitted to the drive shaft 31 from the boss part 19A and temperature of bearings 29A, 39A become high, and durability can be improved. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种抑制在压缩室中产生的热量从涡卷的凸起部分到驱动轴的凹槽的凹槽。 解决方案:多个压缩室16A由固定涡旋件5A的搭接部7A和转动涡卷13A的搭接部15A构成。 由马达27驱动的驱动轴31装配在转动涡卷13A的凸台部分19A上。 在凸台部19A上设置有细长的槽21A和凹部24A,在驱动轴31上设有周向槽36A。因此,由于能够形成沿径向和轴向的间隔22A,25A,37A, 凸台部19A和驱动轴31,防止压缩室16A侧产生的热量从凸台部19A向驱动轴31传递,轴承29A,39A的温度变高,耐久性提高。 版权所有(C)2006,JPO&NCIPI
    • 8. 发明专利
    • Scroll type fluid machine
    • 滚筒式流体机
    • JP2005207414A
    • 2005-08-04
    • JP2004346747
    • 2004-11-30
    • Hitachi Ltd株式会社日立製作所
    • KOMAI YUJIIKEDA HIDEAKISUEFUJI KAZUTAKAFUKUI KOJISAKAMOTO SUSUMUSUGIMOTO MASANORI
    • F04C29/04F04C18/02
    • F04C18/0215
    • PROBLEM TO BE SOLVED: To form the whole machine compactly while cooling both a fixed scroll and a turning scroll with a cooling fan. SOLUTION: A rotary shaft 18 has cooling fans 38A and 38B between an electric motor 15 and turning scrolls 26A and 26B, and outer cases 3A and 3B are provided with inflow ports 42A and 42B, outflow ports 43A and 43B, ducts 44A and 44B for scroll, and ducts 46A and 46B for a cooler. The rotary shaft 18 is rotated and driven by the electric motor 15 to operate compression sections 6A and 6B, and at this time the cooling fans 38A and 38B are rotated together. Thus, even with an electric fan or the like being not used, the fixed scrolls 7A and 7B, the turning scrolls 26A and 26B, and the cooler 47 can be efficiently cooled, and a small compressor having high cooling performance can be formed. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:在用冷却风扇冷却固定涡旋盘和转动涡旋盘的同时,紧凑地形成整个机器。 解决方案:旋转轴18在电动马达15和转动涡旋件26A和26B之间具有冷却风扇38A和38B,外壳3A和3B设置有流入口42A和42B,流出端口43A和43B,管道44A 和用于滚动的44B,以及用于冷却器的管道46A和46B。 旋转轴18由电动机15旋转驱动,以操作压缩部6A和6B,此时冷却风扇38A和38B一起旋转。 因此,即使不使用电动风扇等,也能够有效地冷却固定涡旋件7A,7B,转动涡旋件26A,26B以及冷却器47,能够形成具有高冷却性能的小压缩机。 版权所有(C)2005,JPO&NCIPI
    • 9. 发明专利
    • Seal device and scroll type fluid machine
    • 密封装置和滚筒式流体机
    • JP2008215108A
    • 2008-09-18
    • JP2007050577
    • 2007-02-28
    • Hitachi Ltd株式会社日立製作所
    • SUEFUJI KAZUTAKAIWANO KIMINOBUKOMAI YUJIFUKUI KOJISAKAMOTO SUSUMU
    • F04C18/02
    • F01C1/084F01C19/005F01C19/08
    • PROBLEM TO BE SOLVED: To reduce surface pressure of a seal member and improve durability. SOLUTION: A seal mechanism 24 is provided between a back plate 16 and a holder 17 to surround a rotating back pressure chamber 18, and the seal mechanism 24 is composed of a seal attaching groove 25, a seal member 26, and a Y packing 27. At this time, a stepped shallow bottom part 25B is formed on the outer peripheral side of the seal mounting groove 25, and a cutout part 26D corresponding to the shallow bottom part 25B is provided on the outer peripheral side of the seal member 26. Further, the Y packing 27 is attached between a deep bottom peripheral wall face 25 of the seal attaching groove 25 and the cutout part 26D of the seal member 26, and a back pressure chamber 28 is formed on a back face 26B side of the seal member 26. Thereby, a sliding face 26A of the seal member 26 can be made larger than an effective area of the back pressure chamber 28, and the difference between a load Ff acting on the sliding face 26A and a load Fb acting on the back face 26B can be reduced. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:降低密封构件的表面压力并提高耐久性。 解决方案:密封机构24设置在背板16和支架17之间以围绕旋转的背压室18,并且密封机构24由密封件安装槽25,密封件26和 Y填料27.此时,在密封安装槽25的外周侧形成阶梯状的浅底部25B,在密封件的外周侧设置与浅底部25B对应的切口部26D 此外,Y密封件27安装在密封件安装槽25的深底部周壁25和密封件26的切口部分26D之间,背面压力室28形成在背面26B侧 因此,可以使密封构件26的滑动面26A大于背压室28的有效面积,并且作用在滑动面26A上的载荷Ff和作用力的载荷Fb之间的差异 可以减小背面26B。 版权所有(C)2008,JPO&INPIT