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31. 发明专利

JPS57159990A MOVABLE VANE TYPE ROTARY COMPRESSOR 失效
公开(公告)号：JPS57159990A
公开(公告)日：1982-10-02
申请号：JP4394381
申请日：1981-03-27
申请人： HITACHI LTD
发明人： KISHI ATSUO , SUGINUMA ATSUSHI
IPC分类号： F04C18/344 , F01C21/08
摘要： PURPOSE:To obtain a highly reliable, movable vane type rotary compressor having a simple structure by guiding oil in cooling medium discharged from a compression operating chamber, through an annular groove and a thrust race, so that the oil is used as lubricant oil for a thrust bearing and also used as compressed oil for applying urging force to vanes. CONSTITUTION:Cooling gas medium compressed by the rotation of vanes 14 and discharged from a discharge port 20 to a discharge space, is led through an oil separating element 27 for separating oil therefrom, and then discharged from a discharge port 28 into an evaporator which is not shown, after oil is separated thereform. Meanwhile, the separated oil is led from an oil hole 30 in an R/H plate 3 to an annular groove 32 in a thrust race 15B, as shown by arrow A, due to differential pressure, and then is fed to the root portion of vanes 14 after the oil being subjected to pressure drop by a resistance through a gap between a thrust race 15B and the R/H plate 3.

32. 发明专利

JPS57116192A OIL SEPARATOR FOR SLIDING VANE COMPRESSOR 失效
公开(公告)号：JPS57116192A
公开(公告)日：1982-07-20
申请号：JP208181
申请日：1981-01-12
申请人： HITACHI LTD
发明人： YOSHIOKA MASAHIRO , IBARAKI YOSHIAKI , KISHI ATSUO , SUGA TSUNEO , TAKAHASHI NUSHITO , HATANO KAZUYOSHI
IPC分类号： B01D35/02 , F04C29/02
摘要： PURPOSE:To increase separating efficiency of oil even in a compressor having more than three compression chambers, by providing a hood to cover each discharge port of sliding vane compressor to the inside of a pressure discharge chamber, and by filling a filter as well as to provide a parting plate and a baffle plate to each part. CONSTITUTION:A hood 27 covering each discharge port, interconnecting to a breather 32 provided to the rear side of a plate 2, forming an internal chamber of a sliding vane compressor, is provided to the inside of a pressure discharge chamber, formed between a hood 11 of a compressor and a plate 2. A filter 31 is filled in order to increase separating efficiency, as well as to provide parting plates 29a-29d and a baffle plate 30 to each part. The refrigerant mixed with an oil, discharged from a breather 32, collides against the projected part 26 formed on a hood 11, where particles of oil are made rough, and they pass through a parting plate 29a and so on. During this time, the particles of oil become further rough by colliding against a cover 27, a parting plate 29a and so on, to reach a baffle plate 30, where they are made rough, furthermore. According to these processes, the oil and the refrigerant become easy to be separated from each other, so that oil separating efficiency can be enhanced, without limitation of the number of compression chamber 17.

33. 发明专利

JPS5788283A VANE COMPRESSOR 失效
公开(公告)号：JPS5788283A
公开(公告)日：1982-06-02
申请号：JP16328780
申请日：1980-11-21
申请人： HITACHI LTD
发明人： KAWASHIMA KENICHI , TAKAO KUNIHIKO , MIYAMOTO SEIGO , IBARAKI YOSHIAKI , NAKAMURA YOUZOU , KISHI ATSUO , SUGINUMA ATSUSHI
IPC分类号： F04C18/344
摘要： PURPOSE:To prevent chattering of vanes inserted into a rotor of a vane compressor, by specifying the relationship of the distance between the axis of rotation of the rotor and a cam ring to the turning angle of the rotor. CONSTITUTION:A vane compressor of this invention consists of a cam ring 1, a rotor 2 fitted in the cam ring 1 in freely rotatable manner, vanes 4 fitted in freely slidable manner in grooves 3 formed radially in the rotor 2, and side plates. Here, the cam ring 1 is shaped to have a configuration shown by a curved line A2 in the drawing, by selecting the distance between the aixis of rotation of the rotor 2 and the inner surface of the cam ring 1 to satisft the following equations, rho=a-bcos 3theta and a/b=10, where a, b are constants and theta is the turning angle of the rotor. With such an arrangement, it is enabled to prevent chattering of the vanes.

34. 发明专利

JPS55161895A REFRIGERATOR OIL COMPOSITION 失效
公开(公告)号：JPS55161895A
公开(公告)日：1980-12-16
申请号：JP6889079
申请日：1979-06-04
申请人： HITACHI LTD
发明人： HONMA KICHIJI , SHIYOUJI SABUROU , KOMATSUZAKI SHIGEKI , ITOU TADASHI , KISHI ATSUO
IPC分类号： C10M169/04 , C10N20/02 , C10N30/00 , C10N30/02 , C10N40/30
摘要： PURPOSE:Titled composition which is highly viscous and stable to a flon solvent, and which is useful for use in cooling compressors for car air conditioners, including a synthetic lubricating oil base oil, a tris(alkylphenyl) phosphate and a benzotrizole derivative. CONSTITUTION:Titled composition is obtained by mixing (a) at least one synthetic lubricating oil base oil selected from the group consisting of a polyalkylene glycol, polyisobutene and an alpha-olefin, with (b) 0.2-0.5wt%, based on the base oil, of a tris(alkylphenyl) phosphate and 0.02-1wt%, based on the base oil, of a benzotriazole derivative represented by formula I, wherein R and R' are both alkyls or one of them is an H atom, such as a compound represented by formula II.

35. 发明专利

JPS51122809A COMPRESSOR 失效
公开(公告)号：JPS51122809A
公开(公告)日：1976-10-27
申请号：JP3014275
申请日：1975-03-14
申请人： HITACHI LTD
发明人： KISHI ATSUO
IPC分类号： F04B27/10 , F04B25/04 , F04B39/12 , F04B41/00 , F16M7/00
摘要： PURPOSE:A compressor casing having a construction that facilitates its mounting to any driving device such as engine and that can be formed by a manufacturing method suitable for producing pressure vessels.

36. 发明专利

JPH0821265A INTAKE DEVICE FOR ENGINE 失效
公开(公告)号：JPH0821265A
公开(公告)日：1996-01-23
申请号：JP15846394
申请日：1994-07-11
申请人： HITACHI LTD
发明人： KADOMUKAI YUUZOU , ISHII MASAHARU , MINEGISHI TERUHIKO , MUNAKATA AKIHIRO , KISHI ATSUO
IPC分类号： F02B27/02 , F02B31/00 , F02D9/02 , F02M35/104 , F02M35/108
摘要： PURPOSE:To perform control of a trace amount of intake air by using a means to perform regulation of the occurrence of an induction swirl through reduction of size and at a low cost and to cause the occurrence of the induction swirl. CONSTITUTION:Main intake pipes 3A-3C are communicated with the intake ports 2A-2D of cylinders 1A-4D, and the main intake pipes 3A-3D are collected at a main intake collector 4. Bypass intake pipes 5A-5D having a passage area lower than those of the main intake pipes 3A-3D are connected to the intake ports 2A-2D, and the bypass intake pipes 5A-5D are collected at a bypass intake collector 6. Intake air flowing through an air intake duct 7 is distributed to a main intake passage 8 and a bypass intake passage 9. In this case, an amount of intake air flowing through the main intake passage 8 and the bypass intake passage 9 is regulated by means of a main throttle valve 10 and a bypass throttle valve 11 located in the respective passages.

37. 发明专利

JPH07293398A INTAKE DEVICE FOR ENGINE 失效
公开(公告)号：JPH07293398A
公开(公告)日：1995-11-07
申请号：JP8817294
申请日：1994-04-26
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KADOMUKAI YUUZOU , OKAMOTO YOSHIO , AMO KIYOSHI , MINEGISHI TERUHIKO , MUNAKATA AKIHIRO , KISHI ATSUO
IPC分类号： F02B31/00 , F02M69/00
摘要： PURPOSE:To improve combustibility from both aspects of fuel atomization and intake turbulence through the application of simple constitution by effectively using the assist air supplied from an air assist injector for facilitating the transformation of atomized fuel into a fine and contained angle form and, at the same time, generating turbulence in the intake air in a combustion chamber. CONSTITUTION:Regarding an engine intake device having an air assist injector 5 for branching and feeding a part of the intake air as the assist air toward fuel jetted into an intake pipe 3, the assist air fed from the injector 5 is supplied as a flow having higher directivity than the air flowing in the intake pipe 3 and surrounding the whole of atomized fuel. The transformation of atomized fuel into a fine and contained angle form is thereby facilitated and, at the same time, a turbulence is generated in the intake air in a combustion chamber 1.

38. 发明专利

JPH0599245A ELECTROMAGNETIC CLUTCH 失效
公开(公告)号：JPH0599245A
公开(公告)日：1993-04-20
申请号：JP26168991
申请日：1991-10-09
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： SAYO KOSAKU , HAMADA HARUKI , HASHIMOTO HIDEKAZU , KISHI ATSUO , USUI HIDEO , SATO MASAYUKI , MATSUMOTO SHINYA
IPC分类号： F16D27/112
摘要： PURPOSE:To improve the strength of an input side body of revolution (clutch element) where no creaking sound (frictional sound) in the engagement of a friction-engagement type electromagnetic clutch is generated and the belt load for power transmission is applied by taking into consideration a section modulus of a bridge part. CONSTITUTION:A plurality of inside slits 23a-23f and outside slits 24a-24d whose diameters are larger and whose number is less than the respective values of the inside slits are arranged concentrically to a friction plate part 21 of an input side body of revolution 20 out of clutch elements (the input side body of revolution 20 and output side body of revolution 7) of an electromagnetic clutch. A bridge width of inside bridge parts 25b, 25c, 25e, 25f whose relative angle of deviation relative to the outside slit space (outside bridge parts 29a-29d) out of the slit space (inside bridge parts 25a-25f) of the inside slits 23a-23f is small is set larger than that of inside bridge parts 25a, 25d whose relative angle of deviation is large.

39. 发明专利

JPH04284182A VARIABLE CAPACITY TYPE ONE-SIDE SWASH PLATE COMPRESSOR 失效
公开(公告)号：JPH04284182A
公开(公告)日：1992-10-08
申请号：JP4638991
申请日：1991-03-12
申请人： HITACHI LTD
发明人： MACHIMURA HIDENORI , TAKAHASHI YUKIO , KISHI ATSUO , ITO MASARU
IPC分类号： F04B27/08 , F04B35/00 , F04B35/01
摘要： PURPOSE:To reduce the chattering of a fixed part by using the caulking of a nut interposed between the balance weight and swash plate of a variable capacity type one-side swash plate compressor for air conditioner for automobile, in the fixation in the circumferential direction between both. CONSTITUTION:A swash plate 2 is held, keeping a variable inclination angle, on the shaft of a variable capacity type one-side swash plate compressor. The swash plate 2 and a balance weight 8 are fixed by a nut 7, and the swash plate 2 and the nut 7 are caulked, and further the balance weight 8 and the nut 7 are caulked. Accordingly, the initial chattering between the balance weight 8 and the swash plate 2 is reduced.

40. 发明专利

JPH04113178A FREEZER DEVICE 失效
公开(公告)号：JPH04113178A
公开(公告)日：1992-04-14
申请号：JP23071590
申请日：1990-09-03
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： F25B43/00 , C09K5/00 , C09K5/08
摘要： PURPOSE:To remove moisture in working medium and restrict a flaking of a roller bearing by a method wherein dehydrating agent selected from ion exchanging resins, or high water absorption resins is contained in the working medium flow passage in a freezer device having, as its working medium, refrigerant of fluorocarbon and aliphatic synthetic lubricant oil. CONSTITUTION:As working medium, medium containing as its moisture content 300ppm or less, defined by a chemical formula of CxHyFz (where, x is an integer of 1 to 3, y is an integer of 1 to 7 and z is an integer of 1 to 7) as refrigerant of fluorocarbon and having as its critical point of 40 deg.C or lower is used. As aliphatic synthetic lubricant oil, at least one of polyalkylene glycol, neopentylpolyol ester and polyether modified siloxane is used. Beads or particle form of ion exchanging resins or high water absorption resins is preferable in view of their easy handling. The resins are contained in a container in a working medium flow passage so as to adsorb and remove moisture content in the working medium. Restriction of flaking is assumed to be caused by the fact that sintering and fragile of hydrogen generated by decomposition of moisture content adsorbed to an active micro-crack at the surface of a bearing produced by a repetitive load through a removal of moisture content in the working medium does not take place.

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