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1. 发明专利

JPH11159898A REFRIGERATOR 失效
公开(公告)号：JPH11159898A
公开(公告)日：1999-06-15
申请号：JP33036097
申请日：1997-12-01
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： SAJI SHUKO , KANEKO YUKIO , ASAKURA HIROSHI , YOSHINAGA SEIICHIRO
IPC分类号： F25B9/00 , F25B9/06
摘要： PROBLEM TO BE SOLVED: To obtain a refrigerator comprising centrifugal compressor and turbine in which the maintenance period is prolonged while generating a high output by employing a refrigerant gas produced by mixing helium and a gas having higher molecular weight than helium and inert in the atmosphere. SOLUTION: In a refrigerator comprising a motor 4 disposed between an upper compressor 2 and a lower turbine 3, one stage of centrifugal blade 12 is fixed to the upper end of a vertical shaft 8 intruding into a casing 11. A gas 13 introduced from an upper inlet 11a into the casing 11 is compressed rotation of the blade 12 and fed from a side outlet 11b through a cooler 17 and a heat exchanger 18 to a turbine 3. The gas 13 is circulated to the compressor 2 after temperature thereof is increased by the heat exchanger 18. A mixture gas of helium and a gas (e.g. neon, argon) having higher molecular weight than helium and inert in the atmosphere is employed as time gas 13.

2. 发明专利

JPH06280770A COOLING METHOD FOR ELECTRIC MOTOR FOR LOW TEMPERATURE GAS COMPRESSOR 失效
公开(公告)号：JPH06280770A
公开(公告)日：1994-10-04
申请号：JP6583893
申请日：1993-03-25
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： KATO DAISAKU , SAJI SHUKO , OYA HIROSHI , ASAKURA HIROSHI
IPC分类号： F04C23/02 , F04C29/04 , H02K9/06
摘要： PURPOSE:To provide a cooling method for an electric motor for compression of low temperature gas wherein inflow of generated heat to low temperature gas owing to viscosity produced between an impeller and a casing is prevented from occurring, the generation of heat flowing in low temperature gas through the rotor of an electric motor is reduced, and the efficiency of a compressor is improved. CONSTITUTION:An electric motor for compression of low temperature gas comprises a low temperature gas inflow port 10 through which the back of an impeller 3 is communicated with the interior of an electric motor; a low temperature gas outflow port 12 through which the inside and the outside of the inside of the electric motor on the opposite side to the impeller is intercommunicated; and a temperature sensor 8 arranged on the impeller side of the electric motor and in the vicinity of a rotor 1. Compressed low temperature gas is caused to flow in the electric motor from the back of the impeller. The inflow low temperature gas is caused to flow along the rotor 1 of the electric motor, the temperature of low temperature gas right after the inflow thereof is measured by means of the temperature sensor 8. A flow rate of the low temperature gas discharged from the electric motor is controlled so that the measured temperature is maintained at a given constant value.

3. 发明专利

JPS63183384A HEAT PIPE ELECTRIC MOTOR 失效
公开(公告)号：JPS63183384A
公开(公告)日：1988-07-28
申请号：JP1399187
申请日：1987-01-26
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： ASAKURA HIROSHI
IPC分类号： F28D15/02
摘要： PURPOSE:To achieve a good heat transmission by tapering the inner circumferential wall of the heat pipe body increasingly wider from its low temperature side toward the high temperature side, and installing said heat pipe body on the rotor shaft of an electric motor. CONSTITUTION:A heat pipe body 1 is rotated on its shaft by the rotation of a rotor 7 of an electric motor 5. The sealed refrigerant 4 is evaporated by being heated on the high temperature side 10 of the heat pipe body 1 to become the evaporated gaseous refrigerant, which moves to the low temperature side 9 where it releases heat to become the condensed liquid refrigerant 4. Since the heat pipe body 1 is rotated, the condensed liquid refrigerant 4 moves toward the high temperature side 10 on the inner circumferential wall 3 on account of the centrifugal force. By tapering the inner circumferential wall 3 increasingly wider from the low temperature side to the high temperature side, the liquid refrigerant can be transmitted regardless of the positioning of the heat pipe body 1. Further, by suitably selecting the speed of the electric motor 5 and the inclination of the inner circumferential wall 3, the quantity of transmission of liquid refrigerant can also be regulated.

4. 发明专利

JP2002039100A ADIABATIC CASING STRUCTURE OF LOW TEMPERATURE ROTARY MACHINE 失效
公开(公告)号：JP2002039100A
公开(公告)日：2002-02-06
申请号：JP2000225259
申请日：2000-07-26
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： YOSHINAGA SEIICHIRO , ASAKURA HIROSHI , SAJI SHUKO , ISHIZAWA TAKEHIKO , KOO MIKIO , NODA MASAHIRO
IPC分类号： F04D29/42 , F04D29/58 , F25B9/00
摘要： PROBLEM TO BE SOLVED: To provide an adiabatic casing structure of a low temperature rotary machine capable of suppressing increase of quantity of heat transferred into low temperature from normal temperature through a compartment wall and increasing withstand pressure. SOLUTION: The adiabatic casing 40 is composed of the first casing 41 which end is fixed to an adiabatic chamber wall 1, the second casing 42 which end is fixed to an operating device 3 and an intermediate cooling ring 43 located between the first casing 41 and the second casing 42 and connecting them. The first casing 41 and the second casing 42 are composed by cylindrical members with thin wall respectively and the intermediate cooling ring 43 is of ring-shaped member containing a passage passing liquid nitrogen or helium gas. At least one of the first casing 42 and the second casing 43 are composed of thin wall parts 41a and 42b reducing a heat transfer and tapered parts 41b and 42b gradually increasing from them.

5. 发明专利

JP2000035191A HEAT INSULATING STRUCTURE OF ROTATING MACHINERY 失效
公开(公告)号：JP2000035191A
公开(公告)日：2000-02-02
申请号：JP20182298
申请日：1998-07-16
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： SAJI SHUKO , YOSHINAGA SEIICHIRO , ASAKURA HIROSHI , ITO KENTARO
IPC分类号： F04D29/053 , F04D29/04 , F04D29/58 , F16L59/00
摘要： PROBLEM TO BE SOLVED: To restrain transmission of heat of a driving device detachably provided on a heat insulating chamber wall outer part to a working device in the inside of the heat insulating chamber. SOLUTION: This heat insulating structure of a rotating machinery has constitution furnished with a partition wall 11 between a working device 3 inside of a heat insulating chamber 2 and an opening 12 provided on a heat insulating chamber wall 1, detachably provided with a driving device 7 on the outside of the opening 12, having a rotating working part 9 furnished on an axis of rotation 8 of the driving device 7 engaged with a working device 3 through the inside of the partition wall 11 and filled with heat insulation gas in the inside of the partition wall 11 and the inside of the driving device 7. A thin part 25 is formed on the axis of rotation 8 in the inside of the partition wall 11 by providing a vacuum space 26 in the inside of the axis of rotation 8, a heat transfer flange 27 to surround an outer peripheral surface of the thin part 25 in a small clearance S is furnished on an inner peripheral part, and an intermediate heat transfer material 28 to which a cooling source 29 is connected is provided on an outer peripheral part.

6. 发明专利

JPH01234758A GAS LIQUEFING DEVICE 失效
公开(公告)号：JPH01234758A
公开(公告)日：1989-09-20
申请号：JP5841388
申请日：1988-03-14
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： ASAKURA HIROSHI , KATO DAISAKU
IPC分类号： F25B9/02 , F25B9/00
摘要： PURPOSE:To obtain a large braking force even though the impeller of a brake blower is small in diameter, by providing a loop heat exchanger on a brake loop of a brake blower to cool the gas in the loop with liquid nitrogen from a pre-cooling heat exchanger. CONSTITUTION:Expansion turbines 2 are connected to break blowers 4 respectively to brake them each, and the inlet and outlet on each of the brake blowers 4 are connected with a loop 3 consisting of an open loop pipe line filled with gas. A loop heat exchanger 18 is installed on each of the loops 3 to cool the gas in the loop 3 by heat-exchanging with liquid nitrogen LN2 which is introduced from a liquid nitrogen line 15 of a pre-cooling heat exchanger 14. Branch lines 19 and 20 diverge from the liquid nitrogen line 15 to circulate the liquid nitrogen through the loop heat exchangers 18. This configuration causes the gas circulating in the loops 3 to be cooled by liquid nitrogen circulated from the pre-cooling heat exchanger 14, increasing the density of the gas, so that a large braking force can be obtained even though the impeller of the brake blower is small in diameter.

7. 发明专利

JPS63260685A MANUFACTURE OF HOLLOW VACUUM INSULATING SHAFT 失效
公开(公告)号：JPS63260685A
公开(公告)日：1988-10-27
申请号：JP9328387
申请日：1987-04-17
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： SAJI SHUKO , MURAYAMA TOSHIICHI , KATO DAISAKU , ASAKURA HIROSHI
IPC分类号： F16C3/02 , B23K15/00 , B23K26/12 , B23K26/21
摘要： PURPOSE:To accurately form a hollow vacuum part and to reduce its manufacturing cost by butting and arranging two columnar shaft pieces having recessed parts with the recessed parts in opposition and then, welding abutments together in a necessary vacuum state. CONSTITUTION:The recessed parts 2a and 2b in the respective axial longitudinal directions are formed on the shaft pieces 1a and 1b and the recessed parts 2a and 2b are arranged in opposition to form the abutments 3. The shaft piece 1a is held by a positioner 14 in a vacuum chamber 4 and the shaft piece 1b is arranged to a rotational roller 16 and the abutments 3 are made to form a satisfactory weld line. An electron beam gun 6 is installed on the outside of a vacuum chamber wall 5 and the vacuum chamber 4 is connected to a vacuum pump. The abutments 3 are welded with an electron beam of the electron beam gun 6 in the vacuum state while rotating the tack welded shaft pieces 1a and 1b by the positioner 14. Since the welding is performed in the vacuum state in a welding chamber, the hollow vacuum part 2 is accurately formed and its manufacturing cost is also reduced.

8. 发明专利

JPS63183382A HEAT PIPE DEVICE 失效
公开(公告)号：JPS63183382A
公开(公告)日：1988-07-28
申请号：JP1398987
申请日：1987-01-26
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： ASAKURA HIROSHI
IPC分类号： F28D15/02
摘要： PURPOSE:To achieve a good heat transfer by arranging the center of the unit body to be the high or low temperature side and its both ends to be the low or high temperature side while making the inner circumferential wall to be tapered to be increasingly wider from the low temperature side toward the high temperature side, and rotating the heat pipe unit. CONSTITUTION:The heat pipe unit 1 is rotated on its axis by a rotating means 9. The sealed refrigerant 6 is evaporated by being heated on the center high temperature side 3 of the heat pipe unit 1 to become the evaporated gaseous refrigerant, which moves to the low temperature side 4 on both ends where it releases heat to be condensed to become the condensed liquid refrigerant 6. Because the heat pipe unit 1 is rotated, said condensed liquid refrigerant 6 moves toward the low temperature side 4 at both ends having a large diameter along the inner circumferential wall 5 on account of the centrifugal force, where it is heated again to be evaporated for transmission of heat. In this instance, as the condensed liquid refrigerant 6 moves to the high temperature side 3 as it forms a liquid layer on the surface of the inner circumferential wall 5, heat is directly transmitted from the high temperature side 3 to the liquid refrigerant, thereby improving the heat transfer.

9. 发明专利

JPH0763193A IMPELLER INSTALLATION STRUCTURE FOR CENTRIFUGAL TYPE LOW TEMPERATURE COMPRESSOR 失效
公开(公告)号：JPH0763193A
公开(公告)日：1995-03-07
申请号：JP22954593
申请日：1993-08-23
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： KATO DAISAKU , SAJI SHUKO , OYA HIROSHI , ASAKURA HIROSHI , NAGAI SHUNJI
IPC分类号： F04D29/30 , F04D29/28
摘要： PURPOSE:To provide an impeller installing structure, which is prevented from levitation due to centrifugal force because of high speed rotation from a rotary shaft and is easily installed/removed, for a centrifugal type low temperature compressor. CONSTITUTION:A bush 13 with the same coefficient of thermal expansion as a rotary shaft 11 is fitted in an impeller 14, and a fastening margin S1, which does not float by centrifugal force, is provided around the outer circumference of the bush 13 for a purpose of shrinkage-fitting of the impeller 14. The impeller 14 is fitted in the rotary shaft 11 via the bush 13 without any clearance between them, and a nut 15 is fastened in a screw part 12 in the tip so as to regulate the movement in the axial direction. In this way, no clearance is made between the bush 13 and the rotary shaft 11 even at low temperature, and installation/removal of them can be carried out without any heating or cooling. In addition, a back face ring 16 consisting of a material with the same or larger coefficient of thermal expansion as that of the impeller 14 is shrinkage-fitted in the back face of the impeller 14 via a fastening margin S2 regulating the deformation, which is caused by centrifugal force generated in the impeller 14, of the inside diameter of the impeller back face, so that the impeller 14 is more surely prevented from floating due to centrifugal force and can be rotated stably.

10. 发明专利

JPH0642830A METHOD AND APPARATUS FOR PROVIDING SUPERFLUID HELIUM 失效
公开(公告)号：JPH0642830A
公开(公告)日：1994-02-18
申请号：JP29553892
申请日：1992-11-05
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： SAJI SHUKO , OYA HIROSHI , ASAKURA HIROSHI , NAGAI SHUNJI
IPC分类号： F25B9/02 , F25J1/00
摘要： PURPOSE:To provide a method and an apparatus for providing pressurized superfluid helium in which a large-suzed vacuum pump is not essentially required and contamination with lubricant oil in a vacuum pump can be avoided. CONSTITUTION:There are provided a compressor 21 for compressing He, of an isotope of helium; a cooler 22 for performing an indirect cooling of He gas with liquid He; a expansion valve 23 for expanding He gas; and a helium II generating cooler 24 for indirectly cooling liquid He with He, wherein helium gas comprising He is compressed. The compressed gas is indirectly cooled with liquid He, and it is expanded for cooling below 2.18K. The liquid He is indirectly cooled with He of below 2.18K and thus it is converted into superfluid helium.

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