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1. 发明专利

JPS60215419A PROTECTING DEVICE FOR COMPRESSOR DRIVING PART FOR CAR AIR CONDITIONER 失效
公开(公告)号：JPS60215419A
公开(公告)日：1985-10-28
申请号：JP4268485
申请日：1985-03-06
申请人： HITACHI LTD
发明人： DEGAWA TAKU , USUI HIDEO , SAYOU KOUSAKU
IPC分类号： B60H1/32 , F02D29/04
摘要： PURPOSE:To increase reliability of a compressor protecting device by comparing the speed of rotation of a compressor with the speed of rotation for comparison, judging existence of abnormality, and releasing a clutch when there is an abnormal condition. CONSTITUTION:When an engine is connected to a compressor by operating an electromagnetic clutch, a pulse for the speed of rotation of a rotor and a pulse for the speed of rotation of a disk are detected by their respective pickups, and inputted into a processing circuit 19. This processing circuit 19 judges whether the clutch is in a normal or an abnormal condition based on difference in pulses in the speed of rotation and the on or off condition of the clutch. When judged abnormal, another comparison is carried out after a certain period of holding time and, when there is still a difference, the clutch is disconnected. This construction increases reliability.

2. 发明专利

JPS5819830A PRESSURE SWITCH 失效
公开(公告)号：JPS5819830A
公开(公告)日：1983-02-05
申请号：JP11869581
申请日：1981-07-29
申请人： HITACHI LTD
发明人： UEDA TOSHIAKI , HASHIMOTO HIDEKAZU , SAYOU KOUSAKU
IPC分类号： H01H35/34

3. 发明专利

JPS57205215A AIR CONDITIONER FOR AUTOMOBILE 失效
公开(公告)号：JPS57205215A
公开(公告)日：1982-12-16
申请号：JP8821681
申请日：1981-06-10
申请人： HITACHI LTD
发明人： UEDA TOSHIAKI , SAYOU KOUSAKU , OOUCHI TOMIHISA
IPC分类号： B60H1/00 , B60H1/02 , B60H1/32 , F25B27/02
摘要： PURPOSE:To improve the durability of a heat exchanger by a method wherein coolant and exhaust gas are heat-exchanged through the heat exchanger and an exhaust gas heat exchanger, both of which are contacted with each other only during the time when the heat pump is put into operation, and the heat exchanger is prevented from becoming high temperatures by separating the heat exchanger from the exhaust gas heat exchanger when exhaust gas becomes high temperatures or the like. CONSTITUTION:The heat exchanger 19 is so constituted as to be able to contact with the separate from the exhaust gas heat exchanger 3 by being shifted through a motor 23, a screw 24 and a spring 25 by the use of flexible tubes 18a and 18b in the coolant passages before and after the heat exchanger 19. When the heating is intended by recovering the heat of exhaust gas by means of heat pump system, the heat exchanger 19 and the exhaust gas heat exchanger 3 are brought into contact with each other so that the heat is exchanged from exhaust gas into coolant and, after that, radiated from an interior heat exchanger 17. On the other hand, when the heating with coolant is not necessary, the heat exchanger 19 and the exhaust gas heat exchanger 3 are separated from each other so that the heat does not exchanged from exhaust gas into coolant. Consequently, the deterioration of the heat exchanger 19 due to high temperature and the thermal cracking of coolant are prevented, resulting in enabling to improve the durability of the heat exchanger.

4. 发明专利

JPS57131967A REFRIGERANT STATE OBSERVING APPARATUS 失效
公开(公告)号：JPS57131967A
公开(公告)日：1982-08-16
申请号：JP1734681
申请日：1981-02-06
申请人： HITACHI LTD
发明人： UEDA TOSHIAKI , SAYOU KOUSAKU
IPC分类号： F25B49/02 , F25B41/00

5. 发明专利

JPS56124736A ELECTROMAGNETIC CLUTCH 失效
公开(公告)号：JPS56124736A
公开(公告)日：1981-09-30
申请号：JP2464180
申请日：1980-03-01
申请人： HITACHI LTD
发明人： TATSUMI TERUO , KANAMARU NAONOBU , SAYOU KOUSAKU
IPC分类号： F16D27/112 , F16D55/00 , F16D55/06 , F16D65/28
摘要： PURPOSE:To decrease energy of inertia of a clutch, by setting the proportion of axial dimensions in a ring-shaped nonmagnetic region between disc plates of magnetic disc to radial dimensions to 0.3-0.6. CONSTITUTION:A rotor side magnetic disc 22 is constituted by three sheets of disc plates 26-28 and ring-shaped bound members 29, 30 of nonmagnetic material, then in a face with the disc plates 26-28 at a face-to-face position to the bound members 29, 30, grooves 26a, 27a, 27b, 28a are provided, and in these grooves the bound members 29, 30 are filled to integrally bind each of the disc plates 26-28. Then the proportion of dimensions of the ring-shaped bound members 29, 30 of nonmagnetic material in the axial direction 13 to dimensions in the radial direction is set to 0.3- 0.6. In this way, miniaturization and weight lightness of an electromagnetic clutch 10 and reduction of energy of inertia are made capable to save fuel consumption when applied to a vehicle.

6. 发明专利

JPS52118155A ELECTROMAGNETIC CLUTCH 失效
公开(公告)号：JPS52118155A
公开(公告)日：1977-10-04
申请号：JP3443976
申请日：1976-03-31
申请人： HITACHI LTD
发明人： SAYOU KOUSAKU
IPC分类号： F16D27/10 , F16D27/00
摘要： PURPOSE:To obtain an electromagnetic clutch with an exciter that fixing means are set between the flank of a bobbin and the flank of a stator and both flanks are fastened in a body with the fixing means.

7. 发明专利

JPS5290757A ELECTROMAGNETIC CLUTCH 失效
公开(公告)号：JPS5290757A
公开(公告)日：1977-07-30
申请号：JP592976
申请日：1976-01-23
申请人： HITACHI LTD
发明人： SAYOU KOUSAKU , SUZUKI TAKEO , TOMOSAKI RIYOUZOU , KANAMARU NAONOBU , KAWAAI HIROYUKI
IPC分类号： F16D27/112 , F16D27/00
摘要： PURPOSE:To provide an electromagnetic clutch with can input retary member which is characterized low cost and easy production, by forming the input rotary member en bloc through the welding and brazing of a plutality of parts.

8. 发明专利

JPS5218558A EXCITER OF SOLENOID CLUTCH 失效
公开(公告)号：JPS5218558A
公开(公告)日：1977-02-12
申请号：JP9315675
申请日：1975-08-01
申请人： HITACHI LTD
发明人： SAYOU KOUSAKU
IPC分类号： F16D27/10 , F16D27/00
摘要： PURPOSE:A waterproof, well-insulated and simple exciter which has its joint box of coil and leed wire formed as part of a bobbin for accommodating exciting joint coil.

9. 发明专利

JPS6115057A Measuring device for flow rate of refrigerant of refrigeration cycle 失效
标题翻译：制冷循环制冷剂流量测量装置
公开(公告)号：JPS6115057A
公开(公告)日：1986-01-23
申请号：JP13530484
申请日：1984-07-02
申请人： Hitachi Ltd
发明人： SAYOU KOUSAKU
IPC分类号： F25B1/00 , F25B41/06 , F25B49/02

10. 发明专利

JPS60117070A CONTROLLER FOR FLOW RATE OF REFRIGERANT 失效
公开(公告)号：JPS60117070A
公开(公告)日：1985-06-24
申请号：JP22414883
申请日：1983-11-30
申请人： HITACHI LTD
发明人： FUKUSHIMA TOSHIHIKO , MIYAMOTO SEIGO , FUJITA MASAHIKO , TAKESO MASANORI , SAYOU KOUSAKU
IPC分类号： B60H1/32 , F25B41/06 , G05D23/185
摘要： A refrigerant flow rate control device for the refrigeration cycle of an air conditioning system of an automotive vehicle which is driven by a vacuum actuator includes a communication passageway for equalizing pressures applied to opposite ends of a valve body. The valve body has an intermediate portion maintained in communication with the atmosphere and connected to the vacuum actuator.

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