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1. 发明专利

JPS535845A SYSTEM FOR REGULATING TEMPERATURE IN BUILDING 失效
公开(公告)号：JPS535845A
公开(公告)日：1978-01-19
申请号：JP7897276
申请日：1976-07-05
申请人： HITACHI LTD , HITACHI NISHI SHIYOUHIN SAABIS
发明人： FUJITA SHIGEO , NAKAMURA RIYUUICHI , TODA MAMORU
IPC分类号： F24F7/007 , F24F7/06 , F24F11/00 , F24F11/02
摘要： PURPOSE:To regulate a temperature of a whole building uniformly and properly in a short time effectively, by dividing an interior of the building into a plurality of rooms provided with a ventilation fan imaginarily, and by controlling operation of each ventilationfan in accordance with a difference between a detected value and a preset value.

2. 发明专利

JPS56144861A CORROSION PREVENTION METHOD FOR WELD HEAT-AFFECTED ZONE OF STAINLESS STEEL 失效
公开(公告)号：JPS56144861A
公开(公告)日：1981-11-11
申请号：JP4681480
申请日：1980-04-11
申请人： HITACHI LTD
发明人： HOSAKA NOBUYOSHI , NAKAMURA RIYUUICHI , ICHIKAWA HIDEAKI
IPC分类号： B23K9/23 , B23K9/00 , B23K31/00
摘要： PURPOSE:To prevent the corrosion phenomena of a weld heat-affected zone and improve quality by coating a corrosion-preventive sealant on the surface of the weld heat affected zone and mounting a corrosion-preventing rubber type material thereon. CONSTITUTION:A corrosion-preventive sealant is coated on the surface of the weld heat-affected zone of a stainless steel, and a corrosion-preventive rubber type material is mounted on this coating layer. The corrosion-preventive sealant consists of the material prepd. by adding 40-44% zinc powder, 5-19% cyloxane resin and 1-3% finely divided silicon dioxide powder to a polystyrene polymer dissolved in a solvent such as methyl ethyl ketone. The corrosion-preventive rubber type material is made by adding 5-15% nitrous acid base ammonium salt and 3-10% zinc powder to natural powder or synthetic rubber contg. no graphite carbon. In spite of the occurrence of microcrazing in the corrosion-preventive sealant upon long-term use and exposure of the metallic surface, the volatile nitrous acid base is preferentially adsorbed on the metallic surface, by which the corrosion of the metallic surface is prevented.

3. 发明专利

JPS60197297A Pure water preparation apparatus 失效
标题翻译：纯水制备装置
公开(公告)号：JPS60197297A
公开(公告)日：1985-10-05
申请号：JP5090784
申请日：1984-03-19
申请人： Hitachi Ltd
发明人： NAKAMURA RIYUUICHI , KOBAYASHI KAZUO , SUGA MASAYUKI
IPC分类号： C02F1/42 , C02F9/00
摘要： PURPOSE: To minimize the stop time of a pressure pump by enabling optimum operation control, by providing a control apparatus, which performs the capacity control of the pressure pump by the water level of a pure water, to a pure water making apparatus.
CONSTITUTION: Raw water entering from an apparatus inlet 9 is pressurized by a pressure pump and passes through a filter 2 and an ion exchange resin tower 3 to be stored in a water storage tank 4 as purified water. The pressure pump 1 is operated while the operation speed thereof is changed by a control apparatus 7 on the basis of the position of a water level detected by a liquid level detector 5. A liquid level detection electrode 5 is constituted of a common electrode 5a, a high speed operation electrode 5b, a low speed operation electrode 5c and a stopping electrode 5d at the full time of water and, when the water level of the water storage tank 4 is lowered to a water level (a), the pressure pump 1 performs high speed operation and, when the water level is raised to restore a position (b), said pressure pump 1 is changed over to low speed operation.
COPYRIGHT: (C)1985,JPO&Japio
摘要翻译：目的：为了通过实现最佳的操作控制来最小化压力泵的停止时间，通过提供一种通过纯水的水位执行压力泵的容量控制的控制装置到纯净水机。构成：从设备入口9进入的原水通过压力泵加压，并通过过滤器2和离子交换树脂塔3，作为净化水储存在储水箱4中。基于由液面检测器5检测到的水位的位置，通过控制装置7改变其操作速度，对压力泵1进行动作。液位检测电极5由公共电极5a，高速操作电极5b，低速操作电极5c和停止电极5d，并且当储水箱4的水位下降到水位（a）时，压力泵1 执行高速运行，并且当水位升高以恢复位置（b）时，将所述压力泵1切换到低速运转。

4. 发明专利

JPS59166771A Ball-shaped check valve 失效
标题翻译：球形检查阀
公开(公告)号：JPS59166771A
公开(公告)日：1984-09-20
申请号：JP3920683
申请日：1983-03-11
申请人： Hitachi Ltd
发明人： NAKAMURA RIYUUICHI
IPC分类号： F16K15/04
CPC分类号： F16K15/04
摘要： PURPOSE:To eliminate generation of turbulent flow and prevent the shaking of a check valve by forming a water conduit which comunicates in the center part of a valve seat and has a cylindrical inner surface. CONSTITUTION:A water conduit 7 having a cylindrical inner surface to permit communication in the center part of a valve seat is formed at the discharge port in the final stage of a pump and communicates to a valve casing 3. When the pumped-up water is allowed to flow by the operation of the pump, water flows into the valve casing 3, passing through the water conduit 7, and during the flow in the water conduit 7, each direction of flow is arranged, and the stream is converged and makes contact with a float 2. Therefore, the generation turtbulent flow is eliminated, and the stability of a check valve 1 is secured, and the shaking of the float 2 is prevented.
摘要翻译：目的：消除湍流的产生，防止止回阀的振动，形成一个与阀座中心部分相连并具有圆柱形内表面的水管。构成：具有圆筒形内表面以允许在阀座的中心部分连通的水导管7形成在泵的最后阶段的排出口处，并与阀壳体3连通。当泵送水为允许通过泵的操作流动，水流入阀壳3，通过水导管7，并且在水导管7中的流动期间，排列每个流动方向，并且该流会聚并接触具有浮子2.因此，消除了产生涡流，并且确保了止回阀1的稳定性，并且防止了浮子2的晃动。

5. 发明专利

JPS5430517A AXIAL FLOW BLOWER WITH VARIABLE PITCH BLADE 失效
公开(公告)号：JPS5430517A
公开(公告)日：1979-03-07
申请号：JP9605677
申请日：1977-08-12
申请人： HITACHI LTD
发明人： NAKAMURA RIYUUICHI
IPC分类号： F04D29/36
摘要： PURPOSE:To provide a blower with longer life and higher reliability with reduced wear between the rotating part and the static part by performing the blade pitch change with a motor provided concentrically to the rotating shaft and rotatable relative to said shaft.

6. 发明专利

JPS5946400A Vertical submersible pump 失效
标题翻译：垂直不可渗水泵
公开(公告)号：JPS5946400A
公开(公告)日：1984-03-15
申请号：JP15661682
申请日：1982-09-10
申请人： Hitachi Ltd
发明人： NAKAMURA RIYUUICHI , ICHIKAWA HIDEAKI
IPC分类号： F04D13/08 , F04D29/70
CPC分类号： F04D29/708
摘要： PURPOSE:To permit to confirm the rotating condition of the pump without dismantling a strainer by attaching the strainer to only the pump casing side of a disc-shaped partitioning wall provided at the intermediate part of the suction casing. CONSTITUTION:A hole 17, penetrating through a coupling 11, is formed at the intermediate part of the suction casing 4 while a partitioning wall 14, fixed to the casing 4, is provided. The outer periphery of the upper side of the partitioning wall 14 is covered by the strainer 5, but the lower side thereof is opened and the rotating part of the pump is exposed. Sand removing collars 7a, 7b are incorporated into the rotating part at the lower side of the partitioning wall 14 and the sand removing collar 7a, fixed to the coupling 11, is formed with small holes 8, however, these small holes 8 are accessible by the tip end of a driver or the like without removing the strainer 5, therefore, the confirmation of the rotation of a pump shaft is easily effected by hand. The packing part of the shaft does not contact with the flow of water directly, therefore, invasion of sand into the shaft packing part is prevented and the life of the bearing part of the pump may be elongated remarkably.
摘要翻译：目的：通过将过滤器仅安装在设置在吸入壳体的中间部分的盘形分隔壁的泵壳侧，允许确认泵的旋转状态而不拆卸过滤器。构成：穿过联接器11的孔17形成在吸入壳体4的中间部分，同时设置固定到壳体4的分隔壁14。分隔壁14的上侧的外周被过滤器5覆盖，但是其下侧打开，并且泵的旋转部分露出。除砂圈7a，7b在分隔壁14的下侧并入旋转部分，并且固定到联接器11上的除砂环7a形成有小孔8，然而，这些小孔8可通过驱动器的前端等，而不需要去除过滤器5，因此用手就可以容易地确认泵轴的旋转。轴的包装部分不直接与水流接触，因此可以防止砂子侵入轴封部件，从而可以显着延长泵的轴承部件的使用寿命。

7. 发明专利

JPS5755981A Sealant for preventing corrosion of aperture of stainless steel 失效
标题翻译：防止不锈钢板腐蚀的危险
公开(公告)号：JPS5755981A
公开(公告)日：1982-04-03
申请号：JP12929880
申请日：1980-09-19
申请人： Hitachi Ltd
发明人： HOSAKA NOBUYOSHI , ISHIKAWA YUUICHI , ICHIKAWA HIDEAKI , NAKAMURA RIYUUICHI
IPC分类号： C09K3/10 , C08K3/00 , C08K3/08 , C08K3/18 , C08K3/24 , C08L7/00 , C08L21/00 , F16J15/02
摘要： PURPOSE: To obtain the titled sealant by adding given amounts of a molybdate and metallic zinc to natural or synthetic rubber.
CONSTITUTION: Natural or synthetic rubber is mixed with 1W25% molybdate powder (e.g., sodium molybdate) and 1W30% fine metallic zinc particles, together with a vulcanizer during corsslinking treatment, and then the mixture is molded into a desired shape of sealant. The sealant is used for preventing the corrosion of apertures between flanged parts of stainless steel drain pumps, etc., by inserting it into the apertures.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过向天然或合成橡胶中加入一定数量的钼酸盐和金属锌，以获得标题的密封剂。构成：天然或合成橡胶与1-5％的钼酸盐粉末（例如钼酸钠）和1-30％的细金属锌颗粒与硫化剂在连接处理过程中混合，然后将混合物模制成所需形状的密封胶密封胶用于通过将其插入孔中来防止不锈钢排水泵等的法兰部件之间的孔的腐蚀。

8. 发明专利

JPS5430518A AXIAL FLOW BLOWER WITH VARIABLE PITCH BLADE 失效
公开(公告)号：JPS5430518A
公开(公告)日：1979-03-07
申请号：JP9605777
申请日：1977-08-12
申请人： HITACHI LTD
发明人： NAKAMURA RIYUUICHI
IPC分类号： F04D29/36
摘要： PURPOSE:To provide a blower with longer life and higher reliability without a wear by connecting the static part and the rotating part of the blade pitch changing device without a direct contact by a pair of magnetic coupling.

9. 发明专利

JPS5391412A MANUFACTURING METHOD OF VANES OF AXIALLFLOW FLUID MACHINERY 失效
公开(公告)号：JPS5391412A
公开(公告)日：1978-08-11
申请号：JP491377
申请日：1977-01-21
申请人： HITACHI LTD
发明人： NAKAMURA RIYUUICHI
IPC分类号： F04D29/38 , B23P15/02
摘要： PURPOSE:To avoid waste of materials by cutting out vanes from the element in the form of cylindrical shell or conical shell.

10. 发明专利

JPS52142313A VOLTEX BLOWER 失效
公开(公告)号：JPS52142313A
公开(公告)日：1977-11-28
申请号：JP5776276
申请日：1976-05-21
申请人： HITACHI LTD
发明人： YAMAZAKI SUSUMU , NAKAMURA RIYUUICHI
IPC分类号： F04D23/00 , F04D29/26
摘要： PURPOSE:To improve an efficiency and to provide an extreme reduction of noise by forming a vane in such a shape as its inner circumferential air flow-in surface is displaced to a major vane plate from the outer circumferential air flow-out surface of the vane and by decreasing a loss of air when the air is flowed into the vane.

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