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21. 发明专利

JPS6081484A CAM PLATE COMPRESSOR 失效
公开(公告)号：JPS6081484A
公开(公告)日：1985-05-09
申请号：JP19142683
申请日：1983-10-13
申请人： HITACHI LTD
发明人： TAKAHASHI YUKIO , DEGAWA TAKU , TAKANO KAZUROU
IPC分类号： F04B25/04 , F04B27/08
摘要： PURPOSE:To lubricate the sliding face between a slipper and thrust bearing and cam plate smoothly, by providing a refrigerant suction port in a shaft while feeding refrigerant through cam plate and thrust bearing into a cylinder bore. CONSTITUTION:The refrigerant suction port is formed with a through-hole 22 made along the central axis of shaft 2 while extending to the position provided with a cam plate 7 and thrust bearing 15. Refrigerant gas fed into the shaft 2 will pass through a small hole 25 for thrust bearing 15 to the thrust bearing 25 while through a small hole 26 for cam plate 7 to the front/rear faces of cam plate 7 and fed into the cylinder bore 3. Since sufficient amount of refrigerant gas containing lubricant is fed continuously to the thrust bearing 15 and cam plate 7 and sucked into the cylinder bore 3 deterioration of durability due to insufficient lubrication of sliding face between thrust bearing 15, cam plate 7 and slipper 8 is prevented.

22. 发明专利

JPS59141777A Swash plate type compressor 失效
标题翻译：洗板式压缩机
公开(公告)号：JPS59141777A
公开(公告)日：1984-08-14
申请号：JP1681483
申请日：1983-02-02
申请人： Hitachi Ltd
发明人： DEGAWA TAKU , TAKAHASHI YUKIO , HAYASHI MORIKAZU , TAKAHASHI REIJIROU
IPC分类号： F04B27/08 , F04B27/10
CPC分类号： F04B27/0821 , F04B27/109
摘要： PURPOSE:To prevent the excess temperature rise of a thrust bearing upon load operation by providing a suction valve, opened and closed by a difference between a suction pressure and a pressure in the compressor, at a suction port. CONSTITUTION:Upon the normal operation, the valve 23 of the suction valve 19 is pushed up, refrigerant is induced into a swash plate chamber 11 to lubricate the thrust bearings 8, 8', lubricating oil is separated in oil separating chambers 12, 12', and the refrigerant is introduced into a low pressure chambers 14, 14' through paths 13, 13' while the lubricating oil lubricates the thrust bearings 8, 8' and the like through a hole 31, a pipe 28, a path 15, a chamber 16 and holes 17, 18, 18'. Upon negative pressure operation, in which the side of suction becomes vacuum, the valve 23 of the suction valve 19 is closed, the refrigerant enters into a spare path 24, a path 27 and a pipe 28 and a slide valve 29 is pushed down to close a hole 31, therefore, the lubricating oil lubricates the thrust bearings 8, 8' through the path 15, a chamber 16 and holes 17, 18, 18' and flows into the swash plate chamber 11.
摘要翻译：目的：通过提供吸入阀，通过吸入压力和压缩机中的压力之间的差异打开和关闭，以防止在负载运行时推力轴承的过度升温。构成：在正常操作中，吸入阀19的阀23被向上推，制冷剂被引入斜盘室11以润滑止推轴承8,8'，润滑油在油分离室12,12'中分离，，并且制冷剂通过路径13,13'被引入低压室14,14'，同时润滑油通过孔31，管道28，路径15，...等润滑推力轴承8,8'等。腔室16和孔17,18,18'。在其中吸入侧成为真空的负压操作中，吸入阀19的阀23关闭，制冷剂进入备用路径24，路径27和管28，并且将滑阀29向下压到关闭孔31，因此，润滑油通过路径15润滑推力轴承8,8'，腔室16和孔17,18,18'并流入斜盘室11。

23. 发明专利

JPS5989968A DETECTOR FOR OVER-ENCLOSING OF REFRIGERANT IN CYCLE FOR AIR-CONDITIONING OF AUTOMOBILE 失效
公开(公告)号：JPS5989968A
公开(公告)日：1984-05-24
申请号：JP19898582
申请日：1982-11-15
申请人： HITACHI LTD
发明人： DEGAWA TAKU , TAKAHASHI YUKIO , KISHI ATSUO
IPC分类号： F25B49/02 , B60H1/32 , F25B49/00

24. 发明专利

JPS5614658A CYLINDER LINER 失效
公开(公告)号：JPS5614658A
公开(公告)日：1981-02-12
申请号：JP8821379
申请日：1979-07-13
申请人： HITACHI LTD
发明人： DEGAWA TAKU
IPC分类号： F16J10/04 , F04B25/04 , F04B27/08
摘要： PURPOSE:To make a cylinder liner tighter and finishing easier, even if the temperature rises inside the cylinder, which are used for light steel-made cylinder body by providing projections along the longitudinal direction on the outer periphery of the cylinder liner. CONSTITUTION:When a cylinder liner 11 is fitted into a cylinder body 5 under pressure, outer periphery projections 12 of the liner base plate 11a are firmly fitted into the inner shell of the cylinder body 5. If a temperature rises inside the cylinder during operation, they should become loose due to thermal expansion rates of the cylinder body 5 and cylinder liner 11. However, the projections 12 are firmly built-in on the inner shell of the cylinder body 5, which prevents them from turning loose. Since each projection 12 forms a part of the cylinder liner, axial movements of the cylinder liner 11 are restricted by an end surface 12a of each projection 12. Therefore, the inner shell of the cylinder body 5 is capable of being straight finished with increased accuracy.

25. 发明专利

JPS55139992A SCREW COMPRESSOR 失效
公开(公告)号：JPS55139992A
公开(公告)日：1980-11-01
申请号：JP4668679
申请日：1979-04-18
申请人： HITACHI LTD
发明人： DEGAWA TAKU , KANEMOTO KAZUO , SASAKI SHIGERU
IPC分类号： F04C18/16 , F04C29/02
摘要： PURPOSE:To promote the separation efficiency in a screw compressor by providing a runner using the rotatory power of a rotor and using its centrifugal force to separate oil from gas with a large difference of specific gravities. CONSTITUTION:The refrigerant gas compressed by the compressing work based on the engaging rotation of both rotors 4 and 5 is mixed with injected oil, and discharged near to a runner 19 in a primary chamber 15 through a discharge port 13. Between mixed currents flowing into both passages 20 and 21 in the runner 19, the one of oil with a larger specific gravity is scattered outward radially from the passage 21 into the primary chamber 15 by the centrifugal force caused by the rotation of the runner 19 as resisting against the current of gas, and dropped to an oil reserving part 15' below to maintain an oil surface. The other of gas with a smaller specific gravity, since the sentrifugal force given by the runner 19 is very small, is issured into a secondary chamber 16 via a radial passage 20 as concentrating to the central part of the runner 19, and discharged into a refrigerant cycle through a discharge port 12.

26. 发明专利

JPS54162219A SWASHHPLATE TYPE COMPRESSOR 失效
公开(公告)号：JPS54162219A
公开(公告)日：1979-12-22
申请号：JP7088278
申请日：1978-06-14
申请人： HITACHI LTD
发明人： DEGAWA TAKU , SUGINUMA ATSUSHI , USUI HIDEO , KAWASHIMA KENICHI , SUGA TSUNEO , TAKAO KUNIHIKO
IPC分类号： F04B27/08 , F04B25/04
摘要： PURPOSE:To maintain a sufficient lubrican level in a swash-plate chamber by raising the bottom of an oil storage chamber and providing a sufficient oil supply by means of a bottom flow hole. CONSTITUTION:When the operation of the compressor is stopped, the rotation of swash plate 5 stops, the stirring of oil at the bottom part stops, and the bottom level of oil in swash plate chamber 4 rises considerably due to the flowing down of the lubricant attached to the surfaces of many components in swash plate chamber 4 or of the coolant; and the head of oil between oil storage chamber 16 and swash plate chamber 4 is reduced, the amount of oil flow in bottom flow hole 18 is also reduced, and the speed of falling of the high oil level of oil storage chamber 16 is slowed down. Consequently, it is possible to maintain the level of lubricant in swash plate chamber 4 sufficiently high even a long time after stopping the compressor and to obtain satisfactory lubrication by only one or two rotation after the resumption of operation.

27. 发明专利

JPS54159711A SWASH PLATE COMPRESSOR 失效
公开(公告)号：JPS54159711A
公开(公告)日：1979-12-17
申请号：JP6770478
申请日：1978-06-07
申请人： HITACHI LTD
发明人： KAWASHIMA KENICHI , HORIBE KIYOSHI , DEGAWA TAKU
IPC分类号： F04B39/02 , F04B25/04 , F04B27/08
摘要： PURPOSE:To improve the lublicating performance at the time of the start by feeding oil collected in the interior of the compressor into a swash plate chamber by making use of a boiling phenomenon at the time of the start. CONSTITUTION:When a compressor is stopped, coil collected in the form of a layer on the inner wall of the swash plate chamber 11 and oil and attached in the form of a film to the frictional surface of the swash plate enters an oil tank 25 if the volume of oil is greater than the volume of the swash plate chamber. When the compressor is started in this state, the frictional surface of the swash plate is lublicated by oil present in a bottom portion of the swash plate chamber 11. Then, the pressure in the oil tank is quickly reduced due to the withdrawing action of the compressor. As a result, the cooling medium that has been dissolved in the coil within the oil tank 25 is boiled off, and the oil is caused to flow through a small hole 26 and swash plate chamber 11 into low pressure chambers 9 and 10, In the above way, the frictional surface of the swash plate is lublicated by the oil and held in an ideal lublicated state.

28. 发明专利

JPS5436610A PISTOM DEVICE OF COMPRESSOR 失效
公开(公告)号：JPS5436610A
公开(公告)日：1979-03-17
申请号：JP10157477
申请日：1977-08-26
申请人： HITACHI LTD
发明人： ARAI NOBUKATSU , DEGAWA TAKU
IPC分类号： F04B39/12 , F04B39/00
摘要： PURPOSE:To provide a piston device in which the internal pressure of a compressor is utilized to maintain good sealing properties even in the presence of sealing ring abrasion.

29. 发明专利

JPS5359905A SWASH PLATE TYPE COMPRESSOR 失效
公开(公告)号：JPS5359905A
公开(公告)日：1978-05-30
申请号：JP13410276
申请日：1976-11-10
申请人： HITACHI LTD
发明人： DEGAWA TAKU
IPC分类号： F04B27/08 , F04B25/04 , F04B39/00
摘要： PURPOSE:To provide a low-noise and low-pulse compressor by using the limited space in a swash plate type compressor for vehicle air conditioning to serve the silencing function due to throttle expansion effect of gas.

30. 发明专利

JPS5246510A ROTARY COMPRESOR WITH MOVABLE VANES 失效
公开(公告)号：JPS5246510A
公开(公告)日：1977-04-13
申请号：JP12186475
申请日：1975-10-11
申请人： HITACHI LTD
发明人： DEGAWA TAKU
IPC分类号： F04C18/344
摘要： PURPOSE:A movable vane type rotary compressor which can eliminate noise due to over-compression during a period of small difference between suction and discharge pressures at the time of starting, by keeping the balance of force near the axial seal point.

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