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1. 发明专利

JPS5879443A CORE FOR DIE CAST ROTOR 失效
公开(公告)号：JPS5879443A
公开(公告)日：1983-05-13
申请号：JP17720781
申请日：1981-11-06
申请人： HITACHI LTD
发明人： SESHIMO KOUJI
IPC分类号： H02K1/26 , H02K1/28
摘要： PURPOSE:To accurately and inexpensively manufacture a die cast rotor by forming parts of the slot groups of a laminated iron plate for the rotor in slots of half shape, and forming caulked erected parts at one sides of the slots. CONSTITUTION:A plurality of slots 12 are opened at a laminated iron plate for a die cast rotor, several slots 16 disposed at an equal interval at the periphery of the slots are formed in a rectangular shape at one side, the rectangular part is erected, thereby forming an erected part 15. The erected parts 15 are sequentially press-fitted by a press, thereby caulking and laminating the plates 11. In this manner, a skewing work can be eliminated and a core metal press-fitting work can be obviated.

2. 发明专利

JPS5869493A CONDENSER MOTOR 失效
公开(公告)号：JPS5869493A
公开(公告)日：1983-04-25
申请号：JP16579981
申请日：1981-10-19
申请人： HITACHI LTD
发明人： SESHIMO KOUJI
IPC分类号： H02P23/00 , H02P25/04 , H02P7/36
摘要： PURPOSE:To improve the operating efficiency at each rotating speed by connecting high, medium and low speed condensers through a switching unit to the auxiliary coil of a motor and connecting a starting time limiter in series with the condensers. CONSTITUTION:Main and auxiliary coils 21, 22 are displaced electrically at 90 deg., high, middle and low speed operating condensers 25, 26, 27 are connected through a switching unit 28 to the coil 22, and a starting time limiter 29 is connected in parallel with the condensers. When the unit 28 is disposed at any of the condensers 25-27 and a power source switch 20 is closed, a motor is started as a resistance shunt motor at the starting time, and is operated as a condenser motor as the limiter 29 is opened. Accordingly, the efficiency at the middle and low speed times can be improved, and the configuration can be extremely simplified without necessity of providing taps at the coils 21, 22.

3. 发明专利

JPS5815489A CAPACITOR MOTOR 失效
公开(公告)号：JPS5815489A
公开(公告)日：1983-01-28
申请号：JP11372981
申请日：1981-07-22
申请人： HITACHI LTD
发明人： SESHIMO KOUJI
IPC分类号： H02P23/00 , H02P25/04
摘要： PURPOSE:To reduce using quantity of coils of a capacitor motor by a method wherein taps for the middle speed and the low speed are provided at the middle of an auxiliary winding, and the taps thereof and a capacitor for operation are controlled to be changed over. CONSTITUTION:The tap 24 for the middle speed and the tap 25 for the low speed provided respectively at the middle of the auxiliary winding 22 are changed over to be connected in series to the capacitor 26 for operation according to load when the motor is to be operated at the middle speed or at the low speed. Because efficiency of the motor is in ideal current flowing condition at this time owing to no generation of distortion in the currnt flowing in the respective windings, the number of revolution can be made as variable by reducing operating torque to be generated by reduction of the number of turns of the auxiliary winding 22. Reduction of efficiency at this time can be reduced by selecting the position of leading out of the tap 24 for the middle speed and the tap 25 for the low speed.

4. 发明专利

JPS5641479A MOTOR FOR DRIVING COMPRESSOR 失效
公开(公告)号：JPS5641479A
公开(公告)日：1981-04-18
申请号：JP11529679
申请日：1979-09-10
申请人： HITACHI LTD
发明人： SESHIMO KOUJI , HASEGAWA SABUROU
IPC分类号： H02P1/44 , F04B49/06
摘要： PURPOSE:To improve efficiency in stationary driving condition in such a way that an auxiliary capacitor and a relay are provided in parallel with a driving capacitor, and the relay is actuated by a thermostat. CONSTITUTION:An auxiliary capacitor 24 and a relay 25 are provided in parallel with a driving capacitor 23, overloading and stationary loading are judged by a thermostat 26, and the auxiliary capacitor 24 is set ON and OFF by actuating the relay 25. Thus, in the stationary driving condition, efficiency is improved from the point (a) to the point (c) in comparison with the case of using the driving capacitor 23 only.

5. 发明专利

JPS54139153A AIR CONDITIONING SYSTEM 失效
公开(公告)号：JPS54139153A
公开(公告)日：1979-10-29
申请号：JP4656278
申请日：1978-04-21
申请人： HITACHI LTD
发明人： SESHIMO KOUJI , UMEHASHI HIDEO
IPC分类号： F25B13/00
摘要： PURPOSE:In an air conditioning system having both cooling and heating functions, to increase a flow rate of the refrigerant circulated without changing the cylinder volume of compressor to keep a high level of performance coefficient upon both air cooling and heating operations. CONSTITUTION:In the air conditioning system having a closed type of motor operated compressor 1 equipped with the compressor means portion 12 and motor portion 14 within a closed vessel 12, the bypass circuit comprising an electromagnetic switching valve 7, an auxiliary capillary tube 8, a path 36 forming part of an outdoor heat exchanger 3 and a secondary suction pipe 26 is provided between the intermediate of an indoor heat exchanger 4 and a heating capillary tube 6 and the interior of the cylinder chamber 17 of said compressor means 12. The head of the piston 16 disposed in said cylinder chamber 17 has the stepped portion 29 which is coincide with the groove 27 formed within the cylinder chamber 17 when the piston 17 reached a bottom dead point. To this groove 27 is open said secondary pipe 26.

6. 发明专利

JPS54137708A FULL ENCLOSED TYPE MOTORRDRIVEN COMPRESSOR 失效
公开(公告)号：JPS54137708A
公开(公告)日：1979-10-25
申请号：JP4530178
申请日：1978-04-19
申请人： HITACHI LTD
发明人： SESHIMO KOUJI
IPC分类号： F04B39/02
摘要： PURPOSE:To contrive saveing energy as well as to save consuming power as an air conditioner together with reducing bearing loss to a large extent by obtaining a lubricating oil supplying system attainable narrow diametral formation of the bearing diameter. CONSTITUTION:In a full enclosed type motor-driven compressor 1 allocated a compressor mechanism 4 having a motor-driven part 3 and cylinders 9a, 9b in an enclosing vessel 2, now when the motor-driven part 3 has been driven, lubricating oil stagnating at the bottom part of the vessel 2 is drawn in through opening ports 40a, 40b of a thrust bearing 16 via intake ports 43a, 43b under a crankshaft 6, which arrives at an internal diametral expanding part 45 of a bearing 15b being splashed outside through traversal bores 49a, 49b by centrifugal force engendered by rotational force of the crankshaft 6. Then, the lubricating oil streams through a conductive bore 42 of the bearing 16, a force-up bore 41, an oil passage 46 into traversal bores 47a, 47b and a traversal bore 48 down to an oil groove 49 in order to respectively lubricate eccentric parts 14a, 14b and an upper part bearing part 15a. This constitution is realizable for desired purpose.

7. 发明专利

JPS54120461A DOUBLE TEMPERATUR TYPE REFRIGERATOR 失效
公开(公告)号：JPS54120461A
公开(公告)日：1979-09-19
申请号：JP2657278
申请日：1978-03-10
申请人： HITACHI LTD
发明人： SESHIMO KOUJI , UMEHASHI HIDEO
IPC分类号： F25D11/02 , F25D29/00
摘要： PURPOSE:To make use of the thermal radiation of a positive characteristic thermistor for the prevention of dewing by equipping a positive characteristic thermistor to be used for the starting of a single-phase induction motor to drive a compressor in the rear side of a partition cover with insulators between. CONSTITUTION:A refrigerator 1 is provided with a freezing and a refrigirating chamber 2 and 3 separated by a partition 7 with an independent door for each, and a refrigerating cycle composed of a compressor 8 and a condenser 9 to be driven by a single-phase induction motor 21, capillary tubes 10, and an evaporator 11. An auxiliary cover 7b is provided in the rear side of a partition cover 7a for forming a thermal insulating space A. An opening 34 is provided on one end of the auxiliary cover 7b. After a psotive characteristic thermistor 31 is inserted, the thermal insulating space A is sealed up by sealing materials.

8. 发明专利

JPS51119553A REFRIGERATOR 失效
公开(公告)号：JPS51119553A
公开(公告)日：1976-10-20
申请号：JP4433675
申请日：1975-04-14
申请人： HITACHI LTD
发明人： SESHIMO KOUJI
IPC分类号： F25D17/06
摘要： PURPOSE:To reduce the winding cost of driving motors for fans of inside box and outside box.

9. 发明专利

JPS5879496A CONDENSER MOTOR 失效
公开(公告)号：JPS5879496A
公开(公告)日：1983-05-13
申请号：JP17457681
申请日：1981-11-02
申请人： HITACHI LTD
发明人： SESHIMO KOUJI
IPC分类号： H02P23/00 , H02P25/04 , H02P25/24
摘要： PURPOSE:To prevent the decrease in the efficiency of a capacitor motor without increasing the coil by providing high, middle and low speed operation capacitors and switching them in response to the rotating speed of a load request. CONSTITUTION:Main and auxiliary coils 21, 22 are disposed at 90 deg. of electric angle on a stator core, and a changeover switch 24 is operated at the high speed operating time, thereby connecting low and high speed operation capacitors 27 and 25 in parallel with the terminal 23 of the coil 22. Middle and low speed operation capacitors 26 and 27 are connected in parallel with it at the middle speed operating time, and the terminal 28 of the switch 14 is disposed at the neutral contact 29 at the low speed operating time, thereby using only the capacitor 27.

10. 发明专利

JPS57180358A PERMANENT MAGNET SYNCHRONOUS MOTOR 失效
公开(公告)号：JPS57180358A
公开(公告)日：1982-11-06
申请号：JP6391181
申请日：1981-04-30
申请人： HITACHI LTD
发明人： SESHIMO KOUJI
IPC分类号： H02K1/27 , H02K21/08
摘要： PURPOSE:To economically fix a permanent magnet and protect the surface of the magnet by disposing a plurality of permanent magnets of tile shape housed in a protection case and forming a rotor yoke by laminated plates. CONSTITUTION:Several tens of laminated plates 2 are laminated by utilizing the plates 2 inside a stator core are formed, the positions equally divided at the circumference are welded, and a rotor yoke 1 is manufactured. The welded part 3 of the yoke 1 is allowed to coincide with the boundary of a plurality of permanent magnets 5, which are covered with a protection case 6, and a permanent magnet rotor 4 is manufactured. The yoke 1 can be constructed without disturbing a magnetic path by bringing the welded part 3 of the yoke 1 into coincidence with the boundary of the magnet 5.

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