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41. 发明专利

JPH07332258A SCROLL COMPRESSOR 失效
公开(公告)号：JPH07332258A
公开(公告)日：1995-12-22
申请号：JP12783894
申请日：1994-06-09
申请人： HITACHI LTD
发明人： HIDA TAKESHI , MIZUNO TAKAO , MATSUNAGA MUTSUNORI , TOJO KENJI , SUEFUJI KAZUTAKA
IPC分类号： F04C29/02 , F04C18/02 , F04C18/04 , F04C29/00
摘要： PURPOSE:To reduce the size of the whole of a compressor and reduce the occurrence of resistance of a delivery flow passage, in a through-shaft type scroll compressor wherein an upsetting moment is prevented from occurring to a revolving scroll. CONSTITUTION:A crank shaft 4 is supported on the side closer to an eccentric shaft part and coupled to a drive source 3 and the tip part of the crank shaft is structured in such a manner to be positioned closer to the end plate side of the revolving scroll than the lap tip surface of the revolving scroll 6. Thus, the diameter of the eccentric shaft part of the crank shaft 4 can be suppressed to a necessary minimum limit to reduce the size of a compressor. Further, the occurrence of flow passage resistance of a delivery port is reduced and high efficiency is provided.

42. 发明专利

JPH0526182A CLOSED TYPE SCROLL COMPRESSOR 失效
公开(公告)号：JPH0526182A
公开(公告)日：1993-02-02
申请号：JP17796991
申请日：1991-07-18
申请人： HITACHI LTD
发明人： TAMURA TAKAHIRO , SAKURAI KAZUO , MIYAKE SHIGEJI , MATSUNAGA MUTSUNORI
IPC分类号： F04C18/02 , F04C28/02 , F04C29/00 , F04C29/02 , F04C29/12 , F16L27/04
摘要： PURPOSE:To form the structure of supporting a driving shaft by a frame in a closed type scroll compressor in such a way as to absorb an assembling error and the movement of the driving shaft by communicating the motor side end face of the driving shaft with an oil sump. CONSTITUTION:A joint formed of the combination of a spherical sliding bearing, a sliding bearing, and the like is provided at a part for communicating the oil feed hole 7c of a driving shaft 7 with an oil sump. The oil sump and the oil feed hole in the driving shaft can be thereby communicated with each other by the joint provided with the spherical sliding bearing, and the joint is made movable in relation to an assembling error and the axial and omnidirectional movement of the driving shaft. Accordingly, there is no partial contact on the sliding member side, and assembling work can be performed simply.

43. 发明专利

JPH04334782A LUBRICATING DEVICE FOR SCROLL COMPRESSOR 失效
公开(公告)号：JPH04334782A
公开(公告)日：1992-11-20
申请号：JP10413591
申请日：1991-05-09
申请人： HITACHI LTD
发明人： MATSUNAGA MUTSUNORI , TAMURA TAKAHIRO , SAKURAI KAZUO
IPC分类号： F04C18/02
摘要： PURPOSE:To prevent a slide bearing from being worn and seized and secure inexpensive and complete operation by providing a lubrication port for communicating respectively independent lubrication passages which open to the edge surface side of a driving shaft with an oil feed groove which is provided in the inside of the bearing sliding surface, and making all the sucked oil pass through the oil feed groove. CONSTITUTION:There are provided respectively independent lubrication passages 13 which open to the shaft edge side in a driving shaft 9, a lubrication port 20 which communicates the lubrication passage 13 with the sliding part of a slide bearing 11 respectively, and a passage 21 which communicates with the lubrication port 20 in the inside of the sliding surface. Therefore, sucked oil is not distributed, but passes through the lower part of the bearing part once, so it is always possible to provide the stable feed amount of oil, thus preventing seizure.

44. 发明专利

JP2006342673A SCROLL FLUID MACHINE 审中-公开
公开(公告)号：JP2006342673A
公开(公告)日：2006-12-21
申请号：JP2005166321
申请日：2005-06-07
申请人： HITACHI LTD
发明人： NAKAMURA SATOSHI , MATSUNAGA MUTSUNORI , HASEGAWA SHUJI , IMAMURA HIROYUKI , YOSUKE YOSHINOBU
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide a compressor for restraining cost, without impairing reliability and performance by forming a thrust receiving member for supporting a shaft directional load of a crankshaft in an easily manufacturable shape, in a scroll fluid machine having a compression mechanism composed of a fixed scroll and a turning scroll, the crankshaft for driving the compression mechanism and a frame for supporting a radial directional load of the crankshaft. SOLUTION: The thrust receiving member for supporting the shaft directional load of the crankshaft, is formed in a shape capable of manufacturing a steel plate only by press molding. COPYRIGHT: (C)2007,JPO&INPIT

45. 发明专利

JP2000170672A SCROLL TYPE HYDRAULIC MACHINE 失效
公开(公告)号：JP2000170672A
公开(公告)日：2000-06-20
申请号：JP34548898
申请日：1998-12-04
申请人： HITACHI LTD
发明人： TSUCHIYA TAKESHI , HAYASE ISAO , SAKURAI KAZUO , MATSUNAGA MUTSUNORI
IPC分类号： F04C29/00 , F01C21/10 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To create a proper meshing state of rotary scroll member with a non-rotary scroll member to improve energy efficiency. SOLUTION: A positioning long hole 31 and a positioning pin 41 are arranged in a fixed scroll 30 and a frame respectively as a means to position the fixed scroll 80 to the frame to which the fixed scroll 30 is fixed. The fixed scroll 30 is constituted so as to be positioned in such a way that the fixed scroll 30 is made freely movable in the direction of the straight line 32 passing through the center of a fixed scroll lap to the frame in the face perpendicular to the axis line of the fixed scroll lap and is made unmovable in the direction crossing the straight line 32, and passes the position where the straight line 32 and the peripheral edge section of the fixed scroll 30 cross each other and can be freely rotated around a straight line in parallel with the axis line.

46. 发明专利

JP2000161268A SCROLL COMPRESSOR 失效
公开(公告)号：JP2000161268A
公开(公告)日：2000-06-13
申请号：JP34122298
申请日：1998-12-01
申请人： HITACHI LTD
发明人： TAKASE HIRONORI , NISHIDA KOJI , SAKURAI KAZUO , MATSUNAGA MUTSUNORI
IPC分类号： F04B39/04 , F04C18/02 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To reduce an oil rise quantity by excellently separating oil contained in compressed refrigerant gas, by oppositely arranging at least a single colliding plate to an inner wall peripheral directional outlet part of a sealed vessel, and arranging a stream lining plate for checking a flow of refrigerant gas to an electric motor upper chamber in an upper end part of the colliding plate. SOLUTION: A gas guiding passage frame 14 is provided with a sealed vessel inner wall peripheral directional outlet part 14a opening in the inner wall peripheral direction of a sealed vessel 1 in a position lower than a coil end upper end surface and a second passage directional outlet part 14b opening in the direction of a stator side surface second passage. At least a single colliding plate 14c is oppositely arranged to a sealed vessel inner wall peripheral directional outlet part 14a. A stream lining plate 14d is arranged in an upper end part of the colliding plate 14c. Refrigerant gas flowing out of the sealed vessel inner wall peripheral directional outlet part 14a directly collides with the colliding plate 14c to separate oil containined in the refrigerant gas. A more remarkable oil rise preventive effect can be obtained without scattering the oil separated by the colliding plate 14c in the direction of a compressor part.

47. 发明专利

JPH11182428A COMPRESSOR AND ASSEMBLING METHOD THEREOF 失效
公开(公告)号：JPH11182428A
公开(公告)日：1999-07-06
申请号：JP35050097
申请日：1997-12-19
申请人： HITACHI LTD
发明人： SAKURAI KAZUO , TAMURA TAKAHIRO , IMAMURA HIROYUKI , MATSUNAGA MUTSUNORI , IIZUKA YASUNARI , OTAWARA MASARU , TAKASE HIRONORI , OISHI YASURO , FUKAZAWA KOKI , ISHIGAMI KAZUYA , OGINO TAKASHI
IPC分类号： F04B39/00 , F04C18/02 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To make improvements in the reliability of a sub-bearing portion by properly and easily assembling the inclination of this sub-bearing portion to a turning shaft, in this sub-bearing supporting scroll compressor. SOLUTION: This compressor is so constituted that an oil filler hole of a sub-bearing side end 19a is made larger than that of a main bearing side 19b, and a sub-bearing 14 and a through hole 20 are installed in a sub-bearing portion 13, then the through hole 20 and an end face of the oil filler hole are opposed to each other and drawn nearer for installation, while the through hole 20 of the sub-bearing portion 13 and the oil filler hole of the sub-bearing side end 19a are made into being concentric and equal to or a side of the through hole is made somewhat larger than the latter in diameter.

48. 发明专利

JPH09112441A POSITIVE DISPLACEMENT PUMP AND COMPRESSOR 失效
公开(公告)号：JPH09112441A
公开(公告)日：1997-05-02
申请号：JP27423695
申请日：1995-10-23
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： HAGITA NAOMI , HAYASE ISAO , TOJO KENJI , MIZUNO TAKAO , TOMITA YOSHIKATSU , MATSUNAGA MUTSUNORI
IPC分类号： F04C18/02 , F04C2/10 , F16N13/00
摘要： PROBLEM TO BE SOLVED: To provide a positive displacement pump that simplifies its structure and also improves the extent of sealability, thereby making it usable as a liquid pump even if a gaseous body exists on top of the liquid. SOLUTION: This pump is composed of installing a driving shaft 14 having an outer circumferential cylindrical surface 14a and a radial inner circumferential cylindrical surface 14b whose both ends are opened to the former 14a, and rotating around a center axis of the said outer circumferential cylindrical surface, a housing member 28 fitted in with this driving shaft 14, a piston member 26 having an outer circumferential surface 26d to be inserted into the inner circumferential cylindrical surface 14d of the driving shaft 14 and a sliding guide part 26a being orthogonal with the center axis of the outer circumferential surface, and a driven shaft 27 having a key part 27a being fitted in the sliding guide part 26a and the outer circumferential cylindrical surface. In addition, it is also provided with a bearing member supporting the outer circumferential cylindrical surface 14a of this driven shaft member 27 as being eccentric to the driving shaft 14 as a constituent element, through which volumetric capacity of an operating space surrounded by the driving shaft, the housing member and the piston member is varied to some extent by a reciprocating motion of the piston member, and thus a fluid is transferred.

49. 发明专利

JPH06317268A CLOSED TYPE SCROLL COMPRESSOR 失效
公开(公告)号：JPH06317268A
公开(公告)日：1994-11-15
申请号：JP10528093
申请日：1993-05-06
申请人： HITACHI LTD
发明人： SHIIBAYASHI MASAO , SUEFUJI KAZUTAKA , MATSUNAGA MUTSUNORI
IPC分类号： F04C18/02
摘要： PURPOSE:To reduce an oil leakage quantity to a suction chamber from a frame chamber, and downsize a scroll member by forming a shape of a wall surface to form the suction chamber in a shape formed by combining a circular arc shape curve having an end plate part of a fixed scroll as its center and an involute curve with each other. CONSTITUTION:A suction chamber 5f is formed in an annular shape of a semicircle, and an inner wall surface 5p to form the suction chamber 5f is set in a circular arc shape with a central point Of as its center. A local recessed part 5g forming the same involute curve with a scroll lap curve is set in a shape of a side wall surface 5m in a lap winding finish end part 5n of a fixed scroll 5. A shape of a wall surface to form such suction chamber 5f is formed in a shape formed by combining a circular arc shape curve having an end plate part of the fixed scroll as its center and the involute curve with each other. Thereby, the size of the suction chamber 5f, that is, a diameter dimension of the inner wall surface 5p can be set small, and a seal length to a frame chamber communicated with a pressure discharge chamber can be set large.

50. 发明专利

JPH0544667A SEALED TYPE SCROLL COMPRESSOR 失效
公开(公告)号：JPH0544667A
公开(公告)日：1993-02-23
申请号：JP20024791
申请日：1991-08-09
申请人： HITACHI LTD
发明人： MATSUNAGA MUTSUNORI , TAMURA TAKAHIRO , SAKURAI KAZUO , MIYAKE SHIGEJI
IPC分类号： F04C18/02 , F04C29/02 , F04C29/04
摘要： PURPOSE:To prevent the oil exhaustion by forming a passage for the communication between an upper part space and an intermediate space and a passage for the communication between the intermediate space and a lower part space, in a sealed container, and installing an injector for introducing the gas which passes through these passages to the coil end part on the lower side of an electric motor. CONSTITUTION:The coolant gas and lubricating oil which are discharged into the upper part space 17 in a sealed container 1 are introduced into a lower space of a compressor part 2, passing through a coolant gas passage 18. A portion of the coolant gas collides with the upper edge of an electric motor 3, and is separated from the lubricating oil and cools the upper side coil of the electric motor 3, and then discharged from a discharge piping 21. Other coolant gas and lubricating oil blow-out towards and collide with the lower side coil end of the electric motor 3 from an injector 23, passing through a coolant passage 19. In this case, the lubricating oil adheres on the coil end, and drips into an oil reservoir 4, and the coolant gas flows into the periphery of the coil end, and cools the lower coil of the electric motor 3. Accordingly, the oil exhaustion can be prevented.

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