专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPH0587046A COMPRESSOR FOR AIR-CONDITIONING OF AUTOMOBILE 失效
公开(公告)号：JPH0587046A
公开(公告)日：1993-04-06
申请号：JP25114991
申请日：1991-09-30
申请人： HITACHI LTD
发明人： MACHIMURA HIDENORI , TAKAHASHI YUKIO , KISHI ATSUO , ITO MASARU
IPC分类号： F04B27/14 , F04B27/08 , F04B49/00
摘要： PURPOSE:To secure a sufficient oil film between a piston ring and a cylinder bore constantly, and to realize an operation for a long period, by setting the stroke of the piston at the minimum capacity operation of a compressor larger than the width the piston ring contacts to the cylinder bore. CONSTITUTION:When a driving shaft 1 is rotated together with a drive plate 2, a swash plate 3 is oscillated. And a piston 13 contacting with the swash plate 3 is reciprocated in the cylinder bore 16, and a piston ring 14 is slided. Furthermore, a sliding body 7 connected to the swash plate 3 is moved on the driving shaft in the axial direction. In such a compressor, a stopper 8 as a control means to regulate the movement of the sliding body 7 is fixed to the driving shaft 1. And the stroke of the piston 13 at the minimum capacity operation is set larger than the width the piston ring 14 is contacted to the cylinder bore 16. Consequently, a sufficient oil film is secured constantly between the piston ring 14 and the cylinder bore 16, and thereby the minimum capacity operation of the compressor is made possible to carry out for a long period.

22. 发明专利

JPH04122792A REFRIGERATOR 失效
公开(公告)号：JPH04122792A
公开(公告)日：1992-04-23
申请号：JP24236790
申请日：1990-09-14
申请人： HITACHI LTD
发明人： HONMA KICHIJI , KAWASHIMA KENICHI , OTA AKIRA , ITO YUTAKA , KOMATSUZAKI SHIGEKI , KISHI ATSUO , IIZUKA TADASHI
IPC分类号： F04B27/08 , C10M129/18 , C10M149/04 , C10N30/12 , C10N40/30 , F25B43/00 , F25B47/00
摘要： PURPOSE:To obtain a refrigerator wherein the moisture of a working medium is effectively removed and lower fatty acids are removed by adsorption so that the flaking of a roller bearing can be prevented by providing a specified acid adsorbent in the passage of a specified working medium or in an aliphatic synthetic lubricating oil. CONSTITUTION:In a refrigerator equipped with a refrigerating compressor using a mixture of a fluorohydrocarbon refrigerant [preferably one shown by the formula (wherein (x) is 1 to 3; (y) is 1 to 7; (z)is 1 to 7) and having a critical temperature of 40 deg.C or lower] and an aliphatic synthetic lubricating oil (e.g. a polyalkylene glycol or neopentyl polyol ester) as the working refrigerant, an acid adsorbent selected from an ion exchange resin (preferably a weakly basic anion exchange resin having an amino group as the exchange group) and an epoxy compound (e.g. phenyl glycidyl ether) is provided in the passage of the working medium or in the lubricating oil. This gives a refrigerator wherein the moisture in the medium is effectively removed and about 1-3C lower fatty acids are removed by adsorption so that the flaking of a roller bearing can be prevented.

23. 发明专利

JPS6188051A Auxiliary machinery driving device for internal-combustion engine 失效
标题翻译：辅助发动机辅助机械驱动装置
公开(公告)号：JPS6188051A
公开(公告)日：1986-05-06
申请号：JP20823984
申请日：1984-10-05
申请人： Hitachi Ltd
发明人： TAKANO KAZURO , TANAKA NAOYUKI , SUGINUMA ATSUSHI , KISHI ATSUO , NAKAMURA YOZO , TANI SEIJIRO , MIYAMOTO SEIGO , MOMONO MASAYOSHI , MACHIMURA HIDENORI
IPC分类号： F16H3/46 , B60K25/02 , F16H37/02
CPC分类号： B60K25/02 , F16H37/02
摘要： PURPOSE:To stop auxiliary machinery during operation of an internal-combustion engine by disposing clutch means for connecting and disconnecting a mutual transmission path for turning force between a rotor and a planetary gear mechanism to release auxiliary machinery from rotating force of the internal-combustion engine. CONSTITUTION:As a driving pulley 6 is directly driven by an engine through a belt, the driving pulley is rotated as far as the engine is rotated. The rotational frequency ratio is determined by outside diameter ratio to a pulley mounted on a crankshaft. When a switch 25 of auxiliary machinery is off, an electric current is not applied to electromagnetic solenoids 4, 5, so that both clutches 28, 29 are in the state of disengagement. Accordingly, only the driving pulley 6 integral with a cover 20 is rotated by a bearing 7, a carrier 8 and a ring gear 15 are not rotated, and a rotary shaft 17 of the auxiliary machinery is stopped.
摘要翻译：目的：通过设置用于连接和断开用于转子和行星齿轮机构之间的转动力的相互传递路径的离合器装置来停止内燃机操作期间的辅助机械，以释放辅助机械免受内燃机的转动力。构成：由于驱动滑轮6由发动机通过皮带直接驱动，所以驱动滑轮旋转直到发动机旋转。旋转频率比通过与安装在曲轴上的滑轮的外径比来确定。当辅助机械的开关25关闭时，不向电磁螺线管4,5施加电流，使得离合器28,29都处于分离状态。因此，只有与盖20一体的驱动滑轮6通过轴承7旋转，载体8和齿圈15不旋转，并且辅助机械的旋转轴17停止。

24. 发明专利

JPS58167894A OIL SEPARATOR 失效
公开(公告)号：JPS58167894A
公开(公告)日：1983-10-04
申请号：JP4908582
申请日：1982-03-29
申请人： HITACHI LTD
发明人： IBARAKI YOSHIAKI , KAWASHIMA KENICHI , KAWABATA TOSHIAKI , KISHI ATSUO
IPC分类号： F04B39/16 , F04B39/04 , F04C29/02
摘要： PURPOSE:To improve the performance of a compressor by securing oiling to the compressor while properly setting the ratio of the total outlet area of an oil separating part toward the compressor volume to the theoretical volume of the compressor. CONSTITUTION:The flow rate of a gas mixture is determined by the theoretical volume Vth of a compressor and the total outlet area St when the gas mixture is discharged. Accordingly, when the ratio of the values Vth to St, i.e., Vth/St is assumed K, it is possible to evaluate the separation efficiency of oil by changing the value of K, i.e., can be estimated using the height (h) of oil stored in an oil reservoir 24 within a chamber 11 from the bottom of the oil. The normally applied maximum number of revolutions of the compressor of a car air conditioning device is generally taken to be about 6,000rpm, so that K

25. 发明专利

JPS58109114A OIL SEPARATOR 失效
公开(公告)号：JPS58109114A
公开(公告)日：1983-06-29
申请号：JP20534781
申请日：1981-12-21
申请人： HITACHI LTD
发明人： IBARAKI YOSHIAKI , KAWABATA TOSHIAKI , SUGA TSUNEO , KISHI ATSUO
IPC分类号： F04B39/16 , B01D46/00 , B01D46/40 , F04B39/02 , F04B39/04 , F04C29/02
摘要： PURPOSE:To efficiently separate oil mists contained in a refrigerant for compression, by passing the refrigerant containing the oil mists through an oil separator formed by laminating plural grooved plates between a rear plate and a cover, which are provided to the inside of a compressor. CONSTITUTION:In a vane-type compressor, a refrigerant, which contains lubricating oil mists and has retrurned to the compressor from a refrigerating cycle, enters through an inlet port 15 to separate the oil mists by an oil separator provided to the inside of a chamber 11. The oil separator is constituted of a rear plate 2, plural grooved plates 26, and a cover 27; a mixed gas of the refrigerant and oil mists, after being compressed in a compression chamber 17, flows out to a gas path of the cover 27 through a path 33 of the rear plate 2 and paths 30 of the grooved plates 26. At this time, the refrigerant containing the oil mists passes through a central hole 34 of the plate 26 and flows between the plates 26 in the direction approximately perpendicular to grooves 35. During this time, the oil mists are captured by the grooves 35 and flow downward along the grooves 35 while growing to large oil drops, and are perfectly separated from the refrigerant and stored in an oil reservoir 24.

26. 发明专利

JPS5874890A ROTARY VANE TYPE COMPRESSOR 失效
公开(公告)号：JPS5874890A
公开(公告)日：1983-05-06
申请号：JP17273181
申请日：1981-10-30
申请人： HITACHI LTD
发明人： KISHI ATSUO , MIZUKAMI MASAO
IPC分类号： F04C18/344 , F01C21/08 , F04C29/02
摘要： PURPOSE:To reduce the flow loss of oil caused by reciprocal movement of vanes of a rotary vane type compressor and to reduce the weight of a rotor, by shaping the rotor in the manner to have a hollow annular space on the inside thereof, using the hollow annular space as a passage for communicating vane slots with each other, and thereby increasing the sectional area of the fluid passage. CONSTITUTION:A rotor 18 is obtained by coupling a pair of crown-shaped half parts 22 together, in the manner that a hollow annular space 23 is formed around the rotor 18 on the inside thereof. Here, the thickness of the rotor 18 at its peripheral portion is selected to be small to such an extent that the rear end portion of a vane 20 is projected slightly into the hollow space 23 at its maximum projected position. Further, the hollow space 23 communicates vane slots 19 with each other and is filled with oil for applying back pressure to the vanes 20 fitted in respective vane slots 19 and for lubricating the vane slots 19. By employing such an arrangement, it is enalbed to reduce the weight of the rotor 18 itself and also to reduce the flow loss of oil since the vane slots 19 are communicated with each other in the hollow space 23.

27. 发明专利

JPS5870815A OIL SEPARATOR 失效
公开(公告)号：JPS5870815A
公开(公告)日：1983-04-27
申请号：JP16869081
申请日：1981-10-23
申请人： HITACHI LTD
发明人： IBARAKI YOSHIAKI , KAWABATA TOSHIAKI , KISHI ATSUO
IPC分类号： F04C29/02 , B01D45/08 , F04B39/04
摘要： PURPOSE:To reduce noise generated by the pressure variation of an emitting gas,by separating the oil in a compressed mixed gas consisting of a cooling medium and oil mist emitted from the emitting port of a compressor in a compression chamber. CONSTITUTION:A cooling medium returned to a compressor from a freezing cycle is flowed into a low pressure chamber 16 formed in a front cover 10 from a cooling medium suction port 15 formed to said front cover 10. Said cooling medium enters compression chambers 17 through passing orifices 18 provided to the plate 1 of a front side in numbers corresponded to the numbers of the compression chambers 17 formed by a cam ring 3 and a rotor 5, passing orifices 19 provided to the cam ring 3 and suction ports 20 communicated with the passing orifices 19 and compression chambers 17. The cooling medium is compressed between vanes 7 by the rotation of the rotor 5 and, while emitted to an emitting pressure chamber in a chamber 11 through emitting ports 21 and emitting valves 22, introduced into an oil separator consisting of a groove plate 26, a cover 27 and a rear plate 2 in the chamber 11 to separate the oil therein and the oil separated cooling medium is flowed out from an emitting port 23.

28. 发明专利

JPS5835289A MOVABLE BLADE TYPE COMPRESSOR 失效
公开(公告)号：JPS5835289A
公开(公告)日：1983-03-01
申请号：JP13370581
申请日：1981-08-26
申请人： HITACHI LTD
发明人： HAYASE ISAO , SUGINUMA ATSUSHI , KISHI ATSUO
IPC分类号： F04C18/344 , F01C1/344 , F01C21/10
摘要： PURPOSE:To improve internal sealing property by making a portion close to a rotor arcuate concentrically with the rotor and combining the arcuate portion smoothly with a curved portion forming a compressing chamber adjacent the arcuate portion. CONSTITUTION:A continuous curve 4 contacting an inscribed circle 3 at one or a plurality points is made a basic curve which is cut off at the respective contact points J,K, and the respective divided curve portions are contracted circumferentially. The resultant separated portions are combined with each other by an arc 5 with the same radius as that of the inscribed circle 3 and the shape thus obtained is made the inside shape of a cylinder which has perfectly round area at n portions combined very smoothly with portions forming a compressing chamber on the way, so that the internal sealing property can be improved.

29. 发明专利

JPS57210196A FEED OIL MECHANISM FOR MOVABLE VANE TYPE ROTARY COMPRESSOR 失效
公开(公告)号：JPS57210196A
公开(公告)日：1982-12-23
申请号：JP9225681
申请日：1981-06-17
申请人： HITACHI LTD
发明人： TATSUZAKI TOORU , KISHI ATSUO , KAWASHIMA KENICHI
IPC分类号： F04C18/344 , F04C29/02
摘要： PURPOSE:To form excellent lubricating films invariably on individual sliding sections by feeding a part of the vane back pressure feed oil to a rotor terminal face by means of the pressure difference between a discharge pressure and the pressure during the compressiom stroke. CONSTITUTION:When a refrigerant is compressed between vanes 8 arranged on a rotor 6 is flowed into the oil separator provided in a cover 1 through the discharge port E and discharge vane 11 arranged on a cam ring 3, oil is separated from the refrigerant, and stored at the bottom section in the compressor cover 1, and fed from the back pressure feed oil hole 12 arranged on a rear plate 5 to individual sliding sections including a bearing by means of the pressure difference between a discharge pressure and the pressure during the compression stroke, then fed back as a lubricating oil. Thereby, excellent lubricating films can be formed invariably on individual sliding sections including the rotor terminal face.

30. 发明专利

JPS57210184A COMPRESSOR FOR REFRIGERATOR 失效
公开(公告)号：JPS57210184A
公开(公告)日：1982-12-23
申请号：JP1541282
申请日：1982-02-01
申请人： HITACHI LTD
发明人： KISHI ATSUO
IPC分类号： F04B27/08 , F04B27/10
摘要： PURPOSE:To simplify the internal shape of a compressor by spraying the circulating oil in a refrigerating cycle direction to sliding sections by use of a suction action of the compressor so as to lubricate the sliding sections. CONSTITUTION:The refrigerant gas entered through a suction port 18 is separated into a refrigerant and oil by means of the difference between inertia forces of the refrigerant and the oil when turned through a low pressure gas passage 20, and the oil is fed into a small sump 30'. A pipe 31 is connected from this sump 30' to the low pressure gas passage 20, and a small hole 32 is provided on said pipe downstream the flow of the refrigerant. When the refrigerant gas flows through the low pressure gas passage 20, the vicinity of the small hole 32 of the pipe 31 becomes a negative pressure, sucking oil from the pump 30' in a form of mist, which, together with the refrigerant gas is sucked into a crank case so as to be sprayed to various sliding sections for lubrication.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式