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1. 发明专利

JPS58140598A HEAT TRANSFER PIPE 失效
公开(公告)号：JPS58140598A
公开(公告)日：1983-08-20
申请号：JP2285782
申请日：1982-02-17
申请人： HITACHI LTD , HITACHI CABLE
发明人： CHIAKI TAKAO , ISHIHANE KIYUUHEI , TATSUMI ARITAKA
IPC分类号： F28F1/40
摘要： PURPOSE:To enhance heat transfer performance and to save material for heat transfer pipe, in a heat exchanger in an air conditioner and the like, by forming many grooves having an approximately semicircular cross section in the outer surface of the heat transfer pipe wherein fluid accompanying phase change flows. CONSTITUTION:Many semicircular grooves 3, which have a depth of (h), an arc angle of 2Xtheta, and a radium ro, are formed in the inner surface of the heat transfer pipe. When vapor is condensed on the heat transfer surface having the minute grooves, the condensed liquid flows downward along the grooves 3. The faster the flow speed, the thinner the liquid film. Thus the heat transfer performance is improved. Gravity of the liquid, frictional force with respect to the wall, and surface tension act on the speed. A size factor related to the driving force is a ratio between an equivalent hydraulic radius, i.e. a cross sectional area of a flow, and a wetted perimeter. When this ratio is large, the flow speed becomes fast, and the heat transfer performance is improved. In order to make the equivalent radius large, the radius ro of a circle should be made large. However, when the radius is made large, the number of the grooves is decreased and the overall performance is decreased. Therefore the semicircular grooves with the radius of ro which is close to the depth (h) of the groove are provided.

2. 发明专利

JPS57157551A HEAT SINK DEVICE 失效
公开(公告)号：JPS57157551A
公开(公告)日：1982-09-29
申请号：JP4243481
申请日：1981-03-25
申请人： HITACHI LTD , HITACHI CABLE
发明人： RIYOUDORI MICHIO , TATSUMI ARITAKA
IPC分类号： H05K7/20 , F28D15/02 , H01L23/427
摘要： PURPOSE:To obtain the titled device having high heat dissipating effect by providing many fins mounted at the end side of a heat transfer unit and a side wall formed vertically to a side plate. CONSTITUTION:An insulating plate 7 is secured onto a heat sink 6 with insulating collars 11 and screws 12, a semiconductor element 8 is mounted on the plate 7, and a heat pipe 1 in which porous substance 3 immersed with water, Freon or alcohol therein and made of metal gauze or glass wool is engaged through the heat sink 6. Then, fins 5 held by a plurality of side plates 4 are engaged via central holes opened at the plates 4 with the peripheral surface of the pipe 1 at the part projected from the heat sink 6, and one lower ends of the plates 4 are secured via screws 9, 9' to a housing wall 10. Thereafter, side walls 13 are bonded to both ends of the side plates, a heat sink device is formed in a chimney shape with the plates 4 and the walls 13, and air guide holes 14 are opened at the side walls 13 to enhance the chimney effect.

3. 发明专利

JPH04313692A HIGH THERMAL LOAD HEAT RECEIVING EQUIPMENT 失效
公开(公告)号：JPH04313692A
公开(公告)日：1992-11-05
申请号：JP7969491
申请日：1991-04-12
申请人： HITACHI LTD , HITACHI CABLE
发明人： YAMASHITA YASUO , KAMIIDE YASUO , TATSUMI ARITAKA , HORI MAKOTO , NOGUCHI KOJI
IPC分类号： F28F1/40 , F28F13/12 , G21B1/00 , G21B1/11 , G21B1/13
摘要： PURPOSE:To obtain heat receiving equipment constituted of heat-receiving pipes which have a critical heat flux higher than a swirl tube and pressure loss lower than the swirl 1 tube. CONSTITUTION:A plurality of turbulent flow generation cores 2A, 2B and 2C... are laid out inside a pipe 1 at an interval. A plurality of sheet-shaped fin sections 2D, which are virtually parallel to the tube axis, are branched from an axial part 2F of the cores in a radial direction whereas each core is laid out in such a fashion that it is deviated from the fin sections 2D of the cores which are adjacent to each upper stream the in a peripheral direction, thereby constituting a heat receiving pipe.

4. 发明专利

JPS57186951A ELECTRIC ROTARY MACHINE 失效
公开(公告)号：JPS57186951A
公开(公告)日：1982-11-17
申请号：JP6836681
申请日：1981-05-08
申请人： HITACHI LTD , HITACHI CABLE
发明人： RIYOUDORI MICHIO , KOYATA SEIJI , SUZUKI KOUICHI , TATSUMI ARITAKA
IPC分类号： H02K9/22 , H02K9/20
摘要： PURPOSE:To make no cavity to be generated in adhesive for fixation of a heat pipe and to enhance strength when a long hole is to be provided in a rotating shaft of an electric rotary machine to insert a heat pipe thereinto to be fixed by a method wherein an air vent hole is provided at the end part on the blockade side of the long hole. CONSTITUTION:When the long hole 13 is to be provided inside of the rotating shaft 1 to insert the heat pipe 7 thereinto to be fixed, the air vent hole 15 to be interconnected with the outside part of the rotating shaft 1 is provided at the end part on the blockade side of the long hole 13. Accordingly when the adhesive 14 is to be poured into the gap between the heat pipe 7 and the long hole 13, because air can be discharged completely, no cavity is generated, and the enhancement of strength of joint and the reduction of thermal contact resistance can be attained.

5. 发明专利

JPH06176901A ELECTRICAL RESISTOR 失效
公开(公告)号：JPH06176901A
公开(公告)日：1994-06-24
申请号：JP32834192
申请日：1992-12-09
申请人： HITACHI CABLE , HITACHI LTD
发明人： TATSUMI ARITAKA , SUZUKI NOBUO , ISAKA KOICHI , TOKUNAGA YOSHIKATSU
IPC分类号： F28D15/02 , H01C1/08
摘要： PURPOSE:To improve cooling characteristics by constituting a heat pipe for radiation in which a hollow insulated bobbin of a resistor main body serves as an evaporator. CONSTITUTION:A hollow insulated bobbin 16, with one end thereof closed, is used as an evaporator 14 of a heat pipe, and a resistor 2 consisting of resistance wires or a carbon film is provided over the external wall of the insulated bobbin 16. The other end of the insulated bobbin 16 is subjected to a metallizing treatment, and is then hard soldered to a heat pipe main body vessel 12 via a member 15 for alleviating difference in thermal expansion coefficient, such as Kovar or the like. After this assembly has been housed in a protective metal container 9, the space of the container is filled with an insulating compound 10. Lead wires 4 are led to the outside via insulators 11. The other end of the heat pipe main body vessel 12 is filled with an operation liquid and then sealed. Air-cooling radiation fins 13 are fitted around the exterior surface of the evaporator 14 of the heat pipe main body vessel 12. Thereby, it is possible to attain an increased allowable load capacity or small products.

6. 发明专利

JPS57186950A ELECTRIC ROTARY MACHINE 失效
公开(公告)号：JPS57186950A
公开(公告)日：1982-11-17
申请号：JP6836581
申请日：1981-05-08
申请人： HITACHI LTD , HITACHI CABLE
发明人： RIYOUDORI MICHIO , KOYATA SEIJI , SUZUKI KOUICHI , TATSUMI ARITAKA
IPC分类号： H02K9/22 , H02K9/20
摘要： PURPOSE:To enhance the grade of concentration and to reduce the vibration and noise of an electric rotary machine when a hole is to be provided in a rotating shaft to insert a heat pipe thereinto and to be fixed by a method wherein the blockading end part of the hole is formed to have a taper type, and the spherical tip part of the heat pipe is adhered with pressure thereto. CONSTITUTION:When a long hole 13 is to be provided inside of a rotor shaft 1 to insert the heat pipe 7 therein to be fixed, the conical taper part 13c is formed at the end part on the blockade side of the long hole 13. Moreover the tip parts 7A2, 7A3 of the heat pipe 7 are formed to have the spherical face type, and the end 7A3 on one side thereof is adhered with pressure to the taper part 13c of the long hole. A cement 14 is poured into the gap between the heat pipe 7 and the long hole 13 to be fixed. Accordingly because the grade of concentration between the long hole 13 and the heat pipe 7 can be enhanced, unbalance can be eliminated, and vibration and noise can be reduced sharply.

7. 发明专利

JPS5816187A HEAT TRANSFER DEVICE 失效
公开(公告)号：JPS5816187A
公开(公告)日：1983-01-29
申请号：JP11374881
申请日：1981-07-22
申请人： HITACHI LTD , HITACHI CABLE
发明人： YANATORI MICHIO , TATSUMI ARITAKA
IPC分类号： F28D15/02 , F28D15/04
摘要： PURPOSE:To make hard to dry-out by a structure wherein an inner tube with grooves on its outer surface is inserted into a closed vessel so as to bring the grooves provided on the inner surface of the closed vessel into contact with said groovee on the outer surface of the inner tube in order to eliminate the interference between the flow of condensed fluid and the flow of vapor in the heat transfer device. CONSTITUTION:In the heat transfer device, in which evaporable liquid sealed in the closed vessel 1 with the grooves 2 on its inner surface transports heat from its one end to its other end utilizing evaporation-condensation phenomena, the inner tube 3 with the grooves 4 on its outer surface is inserted into the vessel 1 so as to bring the grooves 2 provided on the inner surface of the vessel 1 into contact with the grooves 4 on the outer surface of the inner tube 3. For example, in case that the grooves 2 are straight line grooves parallel to the longitudinal direction of the device, the grooves 4 are formed spirally and, on the contrary, in case that the grooves 2 are spiral, the grooves 4 are formed in the form of straight line or of spiral with its twisting direction opposite to the twisting direction of the grooves 2. As a result, the interference between the flow of the condensed fluid and the flow of the vapor in the heat transfer device is eliminated, resulting in making hard to dry-out and as well as increasing the transportation amount of the condensed liquid from the condensing part to the evaporating part of the heat transfer device.

8. 发明专利

JP2003036002A Surface coated roll with crosslinked fluorinated resin 审中-公开
标题翻译：表面涂层辊与交联氟化树脂
公开(公告)号：JP2003036002A
公开(公告)日：2003-02-07
申请号：JP2001221353
申请日：2001-07-23
申请人： Hitachi Cable Ltd , 日立電線株式会社
发明人： TATSUMI ARITAKA
IPC分类号： G03G15/20 , F16C13/00
摘要： PROBLEM TO BE SOLVED: To provide a surface coated roll with crosslinked fluorinated resin that is easily manufactured which is superior in durability against wear and having a long service life when used as a fixing roll for a copying machine.
SOLUTION: In the roll formed by being provided with a fluorinated resin coating layer directly over a shaft core or through another coating layer, the surface of the roll is covered by crosslinked fluorinated resin so that the fluorinated resin coating layer is formed with non crosslinked fluorinated resin on its inner peripheral side and its outer peripheral side is formed with cross linked fluorinated resin.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种易于制造的具有交联氟化树脂的表面涂布辊，其耐磨性优异并且当用作复印机的定影辊时具有较长的使用寿命。解决方案：在通过在轴芯上或通过另一涂层设置氟化树脂涂层形成的辊中，辊的表面被交联的氟化树脂覆盖，使得氟化树脂涂层形成为非交联的氟化树脂在其内周侧和外周侧上形成交联氟化树脂。

9. 发明专利

JP2002361751A METHOD FOR MANUFACTURING SHEET OF CROSSLINKED FLUORORESIN 失效
公开(公告)号：JP2002361751A
公开(公告)日：2002-12-18
申请号：JP2001167850
申请日：2001-06-04
申请人： HITACHI CABLE
发明人： TATSUMI ARITAKA
IPC分类号： C08J7/00 , B29C67/04 , B29D7/00 , B29K27/12
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a sheet of a crosslinked fluororesin by which the high-quality sheet of a crosslinked fluororesin of an optional bulk density can be efficiently manufactured. SOLUTION: Fine powder of a non-crosslinked fluororesin is continuously sent onto a conveyor for transferring the fine powder of a non-crosslinked fluororesin while the fine powder of a non-crosslinked fluororesin is continuously fed into the hopper of a device for manufacturing a sheet of a crosslinked fluororesin, and thus a sheet-like form of the fine powder of the non-crosslinked fluororesin is continuously manufactured on the conveyor. Next, the sheet-like form of the fine powder of the non-crosslinked fluororesin is heated by making the sheet-like form pass through a heating furnace which heats the sheet-like form under a non-oxygen atmosphere through the movement of the conveyor. Further, the sheet-like form is crosslinked by making it pass through a crosslinking furnace which irradiates the sheet-like form of the fine powder of the non-crosslinked fluororesin with ionizing radiations under a non-oxygen atmosphere through the movement of the conveyor. Then, by making the sheet-like form of the fine powder of the crosslinked fluororesin pass through a nip between rolling rolls, the sheet-like form is rolled into a sheet of a crosslinked fluororesin of a predetermined thickness.

10. 发明专利

JP2001334157A PULVERIZING METHOD FOR POWDER BY LOW-TEMPERATURE VIBRATION MILL 失效
公开(公告)号：JP2001334157A
公开(公告)日：2001-12-04
申请号：JP2000161096
申请日：2000-05-26
申请人： HITACHI CABLE
发明人： TATSUMI ARITAKA
IPC分类号： B02C17/14 , B02C17/04 , B02C17/18 , B02C17/20
摘要： PROBLEM TO BE SOLVED: To provide a pulverizing method for powder by a low-temperature vibration mill which is capable of pulverizing powder of hardly grindable material like crosslinked polytetrafluoroethyelene(PTFE) powder at a high yield. SOLUTION: The vibration mill generates vibration in a vessel 1 of a hollow cylindrical shape containing raw material powder 17 and many balls 22 by rotating a shaft 8 with unbalance weights mounted through bearings 7 in the central part of the vessel and pulverizes the raw material powder with impact and friction force by the vibration of the balls and agitating motion of this time. The entire part in the vessel is cooled down to

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