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    • 1. 发明专利
    • Motor
    • 发动机
    • JP2011066948A
    • 2011-03-31
    • JP2009212630
    • 2009-09-15
    • Hitachi Ltd株式会社日立製作所
    • KARASHI SHIGEKIITO HIROSHI
    • H02K5/20H02K9/02
    • PROBLEM TO BE SOLVED: To provide a motor for vehicle having improve cooling performance for achieving large-capacity and downsizing. SOLUTION: The motor includes: a stator fixed on a motor frame, a plurality of axial direction back ventilation paths provided on the outer circumference of the stator, a rotor shaft supported rotatably on the motor frame via a bearing, and a rotor which is disposed on the inner circumference of the stator via a gap between the rotor and the stator, has a plurality of axial shaft rotor ventilation paths in the inside and is fixed on the rotor shaft. The motor allows a coolant to circulate through the axial direction back ventilation paths, the gap and the rotor ventilation paths. The motor has a radial direction ventilation path communicating with the axial direction rotor ventilation paths, which is provided on the end of the rotor on the downstream. A part of the coolant passing through the inside of the rotor is sprayed toward the stator end on the downstream. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种具有改善冷却性能的用于实现大容量和小型化的车辆用电动机。 电动机包括:固定在电动机框架上的定子,设置在定子的外周上的多个轴向后通风路径,经由轴承可旋转地支撑在电动机框架上的转子轴和转子 其通过转子和定子之间的间隙设置在定子的内周上,在内部具有多个轴向转子通风路径,并且固定在转子轴上。 电机允许冷却剂通过轴向循环通过背部通风路径,间隙和转子通风路径。 马达具有与轴向转子通气路径连通的径向通气路径,其设置在下游的转子的端部。 通过转子内部的冷却剂的一部分向下游的定子端喷射。 版权所有(C)2011,JPO&INPIT
    • 2. 发明专利
    • Evaluation device for gap tolerance
    • 评估设备的差距
    • JP2007309700A
    • 2007-11-29
    • JP2006136937
    • 2006-05-16
    • Hitachi Ltd株式会社日立製作所
    • MATSUI YUJIKARASHI SHIGEKIYAMADA KIMIOAOKI MANABU
    • G01B7/14
    • PROBLEM TO BE SOLVED: To provide an evaluation device for a gap tolerance capable of evaluating accurately the gap tolerance by relatively simple device constitution, and usable even under vacuum, in a refrigerant, and under a high-magnetic field atmosphere.
      SOLUTION: This evaluation device for the gap tolerance is installed, between two structural materials 1, 2, with a gap tolerance evaluation sensor comprising a cantilever-like metal contact 4 with a shape varied in response to a gap distance, and a resistance membrane 6 capable of measuring a resistance change in response to a conduction distance. An electric resistance between the metal contact 4 and the resistance membrane 6 is measured by an electric resistance measuring part 9 to evaluate the gap tolerance until the structural materials 1, 2 contact, based on an obtained electric resistance value. The evaluation device may be combined with a capacitance type displacement sensor to evaluate the gap tolerance including an inclination between the structural materials 1, 2.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种间隙公差的评估装置,其能够通过相对简单的装置构造精确地评估间隙公差,并且即使在真空下,制冷剂中也可以在高磁场气氛下使用。 解决方案:用于间隙公差的该评估装置在两个结构材料1,2之间安装有间隙公差评估传感器,该间隙公差评估传感器包括具有响应于间隙距离而变化的形状的悬臂状金属接触件4,以及 电阻膜6能够测量响应于传导距离的电阻变化。 通过电阻测量部件9测量金属触点4和电阻膜6之间的电阻,以基于获得的电阻值来评估结构材料1,2接触之前的间隙公差。 评估装置可以与电容型位移传感器组合以评估间隙公差,包括结构材料1,2之间的倾斜度。(C)2008,JPO和INPIT
    • 5. 发明专利
    • REFRIGERATOR
    • JPH06193985A
    • 1994-07-15
    • JP34187892
    • 1992-12-22
    • HITACHI LTD
    • KARASHI SHIGEKI
    • F25B1/00F25B5/02F25D11/02F25D19/00
    • PURPOSE:To obtain a cooling capacity of a temperature in an allowable range for normally operating a temperature of a compressor by providing a second cooler to be used by branching part of refrigerant to b used for a refrigerating cycle of a refrigerator at a lower surface of the refrigerator, and cooling indoor air to be introduced into the compressor by using low temperature refrigerant. CONSTITUTION:A compressor 2 for compressing refrigerant of a refrigerator body 1 to high temperature and high pressure is provided. A second cooler 3 for cooling indoor air to cool the compressor 2 is provided, and a temperature sensor 4 for measuring an atmospheric temperature of the compressor 2 is provided. The cooler 3 is heat-exchanged with indoor air 5 to be introduced into the compressor 2. The air 5 is cooled by the heat exchanging. On the other hand, refrigerant in the cooler 3 becomes gas by evaporating. As a result, the cooled air 5 can effectively cool the compressor 2. Thus, since it can be always held in an allowable range for normally operating, damage of functions of the compressor 2 at a high temperature can be prevented.
    • 6. 发明专利
    • REFRIGERATOR
    • JPH063016A
    • 1994-01-11
    • JP16456092
    • 1992-06-23
    • HITACHI LTD
    • KARASHI SHIGEKI
    • F25D11/00
    • PURPOSE:To perform rapid cooling of a food, in a refrigerator to cool a food by spraying cold air thereagainst. CONSTITUTION:A thermoelectric element 5 formed of an N-type semiconductor, a P-type semiconductor, and a metallic sheet is installed to the back wall and the side wall of a refrigerator 1. The thermoelectric element 5 is further coupled to a power source and a source switch. Further, a temperature sensor is installed in a refrigeration chamber 1 to monitor temperature in the refrigeration chamber 1, and the thermoelectric element 5 is operated according to a measurement temperature. Thus, temperature in the refrigeration chamber is increased owing to addition of new foods, the new foods can be rapidly cooled in a state that quality of foods in other storage chamber is held.
    • 9. 发明专利
    • AIR CONDITIONER
    • JPH04110559A
    • 1992-04-13
    • JP22828690
    • 1990-08-31
    • HITACHI LTD
    • YONEDA YOSHIYUKIKARASHI SHIGEKI
    • F24F11/02F24F13/068
    • PURPOSE:To make temperature distribution in a large space uniform by providing a supply air return duct for coupling a first air supply opening, a second air exhaust opening and a filter, a valve, an air supply blower at one wall side, and providing an exhaust return duct for coupling a first exhaust opening, a second air supply opening and the filter, an exhaust blower, a valve, a check valve at the other wall side. CONSTITUTION:A first air supply opening 21, a second exhaust opening 32 are provided at one sidewall surface, an air return duct 14 is provided out of a large space, a filter 9, a valve 11, and an air supply blower 6 are coupled. A second air supply opening 22, a first exhaust opening 31 are provided at the wall sides opposed to each other, and an exhaust return duct 15 having the filter 9, an exhaust blower 7, the valve 11, and a check valve 12 is provided out of the space. The air supplied from both supply ports into the space is increased in a flow passage, and exhausted from both the exhaust ports, thereby increasing mixing and agitating effects of the air. The directions of both the air supply ports can be periodically varied, and air agitating effect in the space can be further increased.
    • 10. 发明专利
    • REFRIGERATOR
    • JPH03255866A
    • 1991-11-14
    • JP5367590
    • 1990-03-07
    • HITACHI LTD
    • KARASHI SHIGEKI
    • F25D11/02
    • PURPOSE:To enable quick cooling action irrespective of any layout of foodstuffs when new foods are housed in a freezer by installing a branch duct to a plurality of blowout ports laid out in an air supply passage of a multi-chamber refrigeration chamber and further a flow passage switch over valve. CONSTITUTION:When a temperature rise is generated somewhere in each chamber of a multi-chamber refrigeration chamber 7, a compressor 1 and a fan motor operate and the cooled air 12 heat-exchanged by a cooler 5 is introduced to a multi-chamber air supply flow passage 10 by way of a diver 9. At that time, the temperature is detected by a temperature measuring instrument installed in each chamber of the multi-chamber refrigeration chamber 7. Responding to each temperature condition, a flow passage switch over valve 15 is manipulated so that the cooled air may blow out from a blowout port 1 to each chamber. For example, when a new foodstuff is housed in a third stage chamber and a fourth stage chamber, the flow passage switch over valve 15 operates so that only one side blowout port 12 is opened in the third stage and both the blowout ports 12 are opened in the fourth stage where the flow passage switch over valve 15 has the function to open only a flow passage 1, only a flow passage 2 and both the flow passages 1 and 2. However, the flow passage 1 is provided on the left side of the branch duct 16 while the flow passage 2 is provided on the right side.