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    • 31. 发明专利
    • HEAT PUMP TYPE AIR CONDITIONER
    • JPH02130357A
    • 1990-05-18
    • JP28366388
    • 1988-11-11
    • HITACHI LTD
    • KARASHI SHIGEKIYONEDA YOSHIYUKI
    • F25B13/00
    • PURPOSE:To obtain a heat pump type air conditioner which is capable of carrying out efficient and comfortable heating operation by providing a heat source for an outdoor heat exchanger and enabling the control of ambient temperature for the outdoor heat exchanger with the heat source. CONSTITUTION:An attempt is made to detect the ambient temperature of an outdoor heat exchanger 4 with a temperature detector 15, and compare this measured value with a preset value in a set point station setter 17, say, 7. Only when the detected value is below the preset value by the set point station setter 17, a signal is adapted to be output so that an electric heater 18 may be turned on. In this manner, the ambient temperature of the outdoor heat exchanger 4 is measured with the temperature detector 15 so that the electric heater 18 may be turned and off around 7 deg.C under control. Under this on/off control, the refrigerant which flows in the outdoor heat exchanger 4 is vaporized at 0 deg.C and over so that the surface temperature of radiation fins or a cooling pipe of the outdoor heat exchanger 4 may not drop below 0 deg.C. It is, therefore, possible to prevent the generation of frost phenomenon, and improve the comfort of heating operation when the temperature of open air is lower.
    • 32. 发明专利
    • AIR CONDITIONER FOR AUTOMOBILE
    • JPH01132412A
    • 1989-05-24
    • JP28949887
    • 1987-11-18
    • HITACHI LTD
    • YONEDA YOSHIYUKIGOTO TADASHIKARASHI SHIGEKIYAMAKAWA MASATAKESAWAHATA TAKATOMO
    • F25B29/00B60H1/00
    • PURPOSE:To make a heat exchanging portion compact while facilitate the regulation of the mixing ratio of warm air/cool air by integrally forming the heat exchanging member of an air heater and the heat exchanging member of an air cooler in a multiple layer form and forming this into a cylindrically wound shape. CONSTITUTION:A refrigerant pipe 17 and a hot water pipe 18 are spirally provided in a vertically-placed spiral cooler/heater 16 which is installed in an air conditioner and in which an evaporator and a heater core are integrally formed. Also, a heat insulating board 19 is placed between both heat transfer pipes 17, 18, and fins 20c, 20h are provided between the heat insulating board 19 and each heat transfer pipe 17, 18. Air flows through these fins 20c, 20h. In order to regulate the quantity of warm air and cool air at the outlet of such cooler/heater 16, warm-air/cool-air regulators 21, 22 are provided. A spiral groove hole (the void portion) 33 is provided in a disk in each of the regulators 21, 22 and, by rotating the regulator 22, the negative detour opening area of the warm air zone is changed to regulate air temperature.
    • 33. 发明专利
    • AUTOMOBILE AIR CONDITIONER
    • JPS63125426A
    • 1988-05-28
    • JP27048886
    • 1986-11-13
    • HITACHI LTD
    • YONEDA YOSHIYUKIKARASHI SHIGEKIIWASHIGE KENGO
    • B60H1/00
    • PURPOSE:To improve the mixing property of cold air and warm air and increase the uniformity of blow-out air temp. by providing a heating flow passage and a cooling flow passage in such relative positions that one surrounds the other in an air conditioner case and providing air flow rate variable doors on the upper course sides while turbulent flow generating doors on the lower course sides of both flow passages. CONSTITUTION:Evaporator 9 and a heater core 10 are coaxially provided in an air conditioner case 1, thereby, being forming relative position that a cooling flow passage 17 surrounds a heating flow passage 16. Both flow passages 16, 17 are partitioned by partition wall 18, air flow rate variable doors 19, 20 are provided on the upper course, while turbulent flow generating doors 21, 22 are provided on the lower course sides, of the flow passages 16, 17, respectively, and a projection 23 for furthering the turbulence of air flow is formed on the end of the free end of each of the turbulent flow generating doors 21, 22. Thereby, the contact area of cold air and warm air after leaving the flow passages 16, 17 can be increased, while generating turbulent flows in both of the cold air and warm air, to improve the mixing property of the cold air and warm air and increase the uniformity of blow-out air temp.
    • 34. 发明专利
    • VENTILATING DEVICE FOR AUTOMOBILE
    • JPS6322756A
    • 1988-01-30
    • JP16461986
    • 1986-07-15
    • HITACHI LTD
    • YONEDA YOSHIYUKIKARASHI SHIGEKI
    • B60S1/54B60H3/00
    • PURPOSE:To enable frost adhered to a front window glass or steam-up produced thereon to be removed in a short time, by a method wherein a nozzle, periodically regulating the direction of the flow of air, is positioned to the inlet part of a defroster, and air flowing through the nozzle is uniformly blown off against a front window glass. CONSTITUTION:A nozzle 15, periodically changing the direction of the flow of air, is positioned to an inlet part to which a ventilation duct 14 of a defroster 3 is connected, and air flowing through the nozzle 15 is blown through a supply opening 13 against a front window glass 6 of a car room 5. The nozzle 15 is attached on a rotary shaft 17 rotated by a drive source, not shown, formed with a forward and reverse rotatable motor and a reduction, gear, and is rotated between a pair of stoppers 18 around the rotary shaft 17 serving as a fulcrum. A bellows 16 is connected to the nozzle 15, and air through the ventilation duct 14 is guided so that all of the air passes the nozzle 15. This constitution enables steam-up of the front window glass 6 to be removed uniformly and in a short time.
    • 36. 发明专利
    • Detection of heater leak
    • 检测加热器泄漏
    • JPS5946864A
    • 1984-03-16
    • JP15655582
    • 1982-09-10
    • Hitachi Ltd
    • KARASHI SHIGEKIKAWABE RIYUUHEI
    • G01R31/02H02H3/33
    • G01R31/025
    • PURPOSE:To enable the detection of leak from each heater with provision of just a piece of current control element for each one piece of preheaters by detecting the leak from the difference in the magnitude and phase between the leak current when all current control elements are turned off and the leak current when the current control elements are successively turned on by a controller. CONSTITUTION:Bidirectional thyristors 21, 22, 23... as current control elements are inserted only in the one side of respective preheaters 11, 12, 13 to perform output control. The other ends of the preheaters are directly connected to the respective phases of three-phase AC. A phase meter 7 which measures the phase of the leak current is provided in addition to a zero phase current transformer 4, an ammeter 5 which measures the leak current, and a controller 6 which controls automatically a bidirectional thyristor 2. The leak current can be detected from the change in the magnitude of the leak current when the bidirectional thyristor is turned on and off in the case of the preheaters connected between U phase-V phase and between V phase-W phase. The leak current can be detected from the change in the phase of the leak current when the bidirectional thyristor is turned on and off in the case of the preheaters connected between the W phase-the U phase and therefore the presence or absence of the leak of all preheaters is judged by performing the on-off control of the bidirectional thyristor successively with respect to all juxtaposed preheaters.
    • 目的:为了能够检测每个加热器的泄漏,只需要为每个预热器提供一片电流控制元件,通过检测当所有电流控制元件转动时漏电流之间的大小和相位差的泄漏 当电流控制元件由控制器依次接通时,断开和泄漏电流。 构成:作为电流控制元件的双向晶闸管21,22,23只插入各预热器11,12,13的一侧,以进行输出控制。 预热器的另一端直接连接到三相交流电源的各相。 除零相电流互感器4,测量泄漏电流的电流表5以及自动控制双向晶闸管2的控制器6之外,还提供了测量泄漏电流相位的相位计7。 在预热器连接在U相-V相之间和V相-W相之间的双向晶闸管导通和截止时,从泄漏电流大小的变化中检测出。 当预热器连接在W相 - U相之间时,双向闸流管接通和断开时,可以从泄漏电流的相位变化来检测泄漏电流,因此存在或不存在泄漏 通过相对于所有并置的预热器连续执行双向晶闸管的开关控制来判断所有预热器。
    • 37. 发明专利
    • Axial gap type rotary electric machine
    • 轴流式旋转电机
    • JP2014036517A
    • 2014-02-24
    • JP2012176862
    • 2012-08-09
    • Hitachi Ltd株式会社日立製作所
    • TOKOI HIROYOSHIENOMOTO YUJIKARASHI SHIGEKI
    • H02K9/06H02K9/22
    • H02K9/08H02K9/06H02K21/24
    • PROBLEM TO BE SOLVED: To provide an axial gap type rotary electric machine with simple constitution capable of cooling a stator by an efficient flow of inner air present in space hermetically sealed with a housing and an end bracket.SOLUTION: The axial gap type rotary electric machine includes a passageway formed to allow communication of a first opening formed on one side face of a rotor and a second opening formed on the other side face of the rotor, while setting a different distance for a first distance from the center of the first opening to a rotary shaft and a second distance from the center of the second opening to the rotary shaft. According to the difference of the distance set on the rotor to the first opening and to the second opening, a differential pressure is generated therebetween and this differential pressure leads the stator proximate to the rotor to be cooled by an air flow generated from one face or the other face of the rotor to the other face or to the one face of the rotor.
    • 要解决的问题:提供一种具有简单结构的轴向间隙型旋转电机,其能够通过存在于由壳体和端部支架密封的空间中的有效的内部空气流来冷却定子。解决方案:轴向间隙型旋转电 机器包括形成为允许形成在转子的一个侧面上的第一开口和形成在转子的另一侧面上的第二开口相通的通道,同时设置与第一开口的中心不同的距离 到旋转轴并且从第二开口的中心到旋转轴的第二距离。 根据设定在转子上的距离与第一开口和第二开口的差异,在它们之间产生压差,并且该压差将定子靠近转子引导以由一个面产生的空气流冷却,或 转子的另一面到另一面或转子的一个面。
    • 38. 发明专利
    • Centrifugal hydraulic machine
    • 离心式液压机
    • JP2010168903A
    • 2010-08-05
    • JP2009009533
    • 2009-01-20
    • Hitachi Ltd株式会社日立製作所
    • NOMOTO SATORUIWASHIGE KENGOKARASHI SHIGEKIIWANO RYUICHIROITO HIROSHISHINTANI KENJI
    • F03B3/12F03B3/02
    • Y02E10/223
    • PROBLEM TO BE SOLVED: To provide a centrifugal hydraulic machine suppressing the occurrence of cavitation in the inlet of a runner while a water turbine is operated even if the flow quantity of the water passing through the runner is changed.
      SOLUTION: This centrifugal hydraulic machine is provided with: a runner 1 which has a plurality of runner blades 2 affixed between a crown 4 and a shroud 5 and is rotated about a rotating axis S; and a plurality of guide vanes 34 annularly disposed on the outer peripheral side of the runner 1. The maximal point 70 which is positioned on the reverse rotating direction side of the runner 1 while the water turbine is operated, away from a crown side end 71 and a shroud side end 72 at the leading edge 3 of each of runner blades 2, is provided in a portion on the leading edge 3 of each of the runner blades 2 between the crown 4 and the shroud 5.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种离心式液压机,即使水通过流道的流量发生变化,也能够在水轮机运转的同时抑制流道入口的空化现象。 解决方案:该离心液压机设置有:流道1,其具有固定在冠部4和护罩5之间并围绕旋转轴线S旋转的多个流道叶片2; 以及环形地设置在流道1的外周侧的多个导向叶片34.在水轮机动作的同时位于流道1的反转方向侧的最大点70远离冠侧端部71 并且在每个流道叶片2的前缘3处的护罩侧端72设置在冠部4和护罩5之间的每个流道叶片2的前缘3的部分中。

      版权所有( C)2010,JPO&INPIT

    • 39. 发明专利
    • Superconducting magnet apparatus and magnetic resonance imaging apparatus
    • 超级磁铁装置和磁共振成像装置
    • JP2009172129A
    • 2009-08-06
    • JP2008013577
    • 2008-01-24
    • Hitachi LtdHitachi Medical Corp株式会社日立メディコ株式会社日立製作所
    • CHIBA TOMOOWATANABE HIROYUKITAKESHIMA HIROTAKAKARASHI SHIGEKIABE MITSUJITAKEUCHI HIROYUKI
    • A61B5/055G01R33/3815G01R33/3873H01F6/00
    • H01F6/04G01R33/3804G01R33/3806G01R33/3815
    • PROBLEM TO BE SOLVED: To provide a superconducting magnet apparatus which suppresses a change of temperature of magnetic members low with respect to a change of room temperature over long term, is small in change of magnetic field homogeneity, and can change a temperature of the magnetic members in a short time as well. SOLUTION: The superconducting magnet apparatus 2 includes: superconducting coils 11a and 11b having annular shapes for generating magnetic fields; a coil vessel 9 for housing the superconducting coils 11a and 11b along with a refrigerant 14; a vacuum vessel 3 for encircling the coil vessel 9 and holding its inside vacuum; magnetic members 12a, 12b, 13a, and 13b which are installed inside the vacuum vessel 3, supported with thermal insulation from the coil vessel 9, and compensate the magnetic fields. The superconducting magnet apparatus 2 includes: a first heat supply and absorption part 44 which is provided outside the vacuum vessel 3, is thermally connected to the vacuum vessel 3, and supplies or absorbs heat; and first thermal conducting members 25 and 27 which are installed inside the vacuum vessel 3, and thermally connected to the vacuum vessel 3 and the magnetic members 12a, 12b, 13a, and 13b. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了提供一种长期地抑制磁性部件的温度变化低的超导磁体装置,磁场均匀性的变化小,能够改变温度 的磁性成员也在短时间内。 超导磁体装置2包括:具有用于产生磁场的环形形状的超导线圈11a和11b; 用于将超导线圈11a和11b与制冷剂14一起容纳的线圈容器9; 用于环绕线圈容器9并保持其内部真空的真空容器3; 磁性构件12a,12b,13a,13b,其安装在真空容器3的内部,由线圈容器9进行热绝缘支撑,并补偿磁场。 超导磁体装置2包括:设置在真空容器3外部的第一供热部44与真空容器3热连接,供给或吸收热量; 和第一导热构件25和27,其安装在真空容器3的内部,并且与真空容器3和磁性构件12a,12b,13a和13b热连接。 版权所有(C)2009,JPO&INPIT
    • 40. 发明专利
    • Rotary electric machine
    • 旋转电机
    • JP2009124771A
    • 2009-06-04
    • JP2007292549
    • 2007-11-09
    • Hitachi Ltd株式会社日立製作所
    • IWANO RYUICHIROKARASHI SHIGEKI
    • H02K9/06
    • PROBLEM TO BE SOLVED: To provide a rotary electric machine having a ventilation type cooling structure that prevents deterioration in cooling efficiency caused by cooling unevenness and spiral vortex in the cooling of a stator coil end.
      SOLUTION: The rotary electric machine has a structure in which a rotor 2 and a stator 3 are each cooled by a diameter direction flow of a cooling gas, and a stator coil end 13 is cooled by a coil end cooling flow 26e of the cooling gas to be derived from the diameter direction flow and to flow into a coil end cooling ventilating portion 18. In the rotary electric machine, a flow restricting member 42 as a turned flow generating portion is provided on the coil end cooling ventilating portion. The flow restricting member generates a turned flow 44 as a flow from the spiral vortex 32 to the stator coil end and generated in a cooling gas in the coil end cooling ventilating portion, by using a centrifugal action caused by the rotation of the rotor, and allows the generated turned flow to act to cool the stator coil end.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种具有通风型冷却结构的旋转电机,其防止在定子线圈端的冷却中由冷却不均匀性和螺旋涡流引起的冷却效率的劣化。 解决方案:旋转电机具有转子2和定子3各自被冷却气体的直径方向流动地冷却的结构,定子线圈端部13被线圈端冷却流26e冷却 从直径方向导出的冷却气体流动并流入线圈端部冷却通风部18.在旋转电机中,在线圈端部冷却通风部上设置有作为流动发生部的流量限制部件42。 流动限制构件通过使用由转子的旋转引起的离心作用,产生作为从螺旋涡流32流向定子线圈端部并在线圈端冷却通风部中的冷却气体中产生的转向流路44,以及 允许所产生的转向流动用于冷却定子线圈端。 版权所有(C)2009,JPO&INPIT