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61. 发明专利

JP2003155990A COMPRESSOR FOR AMMONIA REFRIGERANT 审中-公开
公开(公告)号：JP2003155990A
公开(公告)日：2003-05-30
申请号：JP2001355647
申请日：2001-11-21
申请人： HITACHI LTD
发明人： MATSUNAGA MUTSUNORI , TOJO KENJI , YASUNORI TOSHINORI
IPC分类号： F04C29/00 , F04C18/02 , F04C29/04 , H02K5/128 , H02K5/18 , H02K29/00
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive hermetic compressor for ammonia refrigerant having high reliability and dispensing with special protection and an expensive material in an electric motor and a terminal part even if ammonia refrigerant is used. SOLUTION: In this hermetic compressor for ammonia refrigerant which is provided with an electric motor part composed of a rotor and a stator and a compression mechanism part arranged inside a sealed vessel and uses ammonia as refrigerant fluid, a bulkhead of the sealed vessel if provided between the rotor and the stator in the electric motor part, the rotor is provided in the sealed vessel, and the stator is provided in outside air atmosphere outside of the sealed vessel.

62. 发明专利

JP2001329978A SCROLL COMPRESSOR 失效
公开(公告)号：JP2001329978A
公开(公告)日：2001-11-30
申请号：JP2000149228
申请日：2000-05-22
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： MATSUNAGA MUTSUNORI , MIZUNO TAKAO , OTAWARA MASARU , IMAMURA HIROYUKI
IPC分类号： F04C29/00 , F04C18/02 , F04C29/02 , F04C29/04
摘要： PROBLEM TO BE SOLVED: To provide a compressor with a high reliability in which an oil- running-out reduction and an electric motor cooling are compatible in a scroll compressor for refrigeration, air conditioning and the like. SOLUTION: A positioning means is provided at an exit part in a direction of outer periphery passage of a stator of a gas guide passage frame such that an opening area becomes a predetermined value.

63. 发明专利

JP2001140779A SCROLL COMPRESSOR 失效
公开(公告)号：JP2001140779A
公开(公告)日：2001-05-22
申请号：JP32764499
申请日：1999-11-18
申请人： HITACHI LTD
发明人： MATSUNAGA MUTSUNORI , NISHIDA KOJI , ORII AKIHITO , IMAMURA HIROYUKI , OTAWARA MASARU
IPC分类号： F04C29/02 , F04C18/02 , F04C29/04
摘要： PROBLEM TO BE SOLVED: To provide a scroll compressor to reduce the occurrence of flow-off of oil, perform cooling of an electric motor, and be high in reliability. SOLUTION: A gas flow restricting means to allow flow-down of separated oil from a middle space to a lower space but block spouting up of gaseous fluid from the lower space to the middle space is situated in the outer peripheral passage of a stator not positioned facing the outer peripheral passage of a frame.

64. 发明专利

JP2001099079A CLOSED SCROLL COMPRESSOR 失效
公开(公告)号：JP2001099079A
公开(公告)日：2001-04-10
申请号：JP27552799
申请日：1999-09-29
申请人： HITACHI LTD
发明人： SAKURAI KAZUO , TAMURA TAKAHIRO , IMAMURA HIROYUKI , MATSUNAGA MUTSUNORI
IPC分类号： F04C29/02 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide a closed scroll compressor efficiently lowering the oil rise quantity in an intermediate space provided with a discharge pipe between a compressing mechanism part and a motor part inside a closed container. SOLUTION: A compressor mechanism is arranged in an upper part of a closed container, and a motor part for driving the compressing mechanism is arranged in a lower part thereof, and a frame for supporting the compressing mechanism and the motor part are housed inside the closed container so as to divide a space inside the sealed container into an upper space over the compressing mechanism, an intermediate space provided with a discharge pipe between the compressing mechanism and the motor part, and a lower space under the motor part. In a closed scroll compressor with this structure, plural plate traps extended in the vertical direction with a required radial directional height are provided in the inner wall surface of the closed container at the intermediate part thereof with a required space in the circumferential direction.

65. 发明专利

JP2001003881A SCROLL TYPE FLUID MACHINE 失效
公开(公告)号：JP2001003881A
公开(公告)日：2001-01-09
申请号：JP17665599
申请日：1999-06-23
申请人： HITACHI LTD
发明人： MUKAI YUUGO , TSUBONO ISAMU , HAYASE ISAO , TSUCHIYA TAKESHI , TERAI TOSHIYUKI , MATSUNAGA MUTSUNORI
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide a scroll type fluid machine improved in performance through the improvement of assembly accuracy and improved in reliability by imparting strength to scroll bodies. SOLUTION: This scroll type fluid machine is provided with a turning scroll having an end plate 3 and a scroll body 2 erectly provided at the end plate 3, and a fixed scroll having an end plate and a scroll body 5 erectly provided at the end plate, and regulated in motion in an in-plane direction vertical to the axial direction; and contracts or expands volume formed by engaging the scroll bodies 2, 5 of the turning scroll 2 and fixed scroll and closing a space between both scrolls. In this case, a side face clearance formed between both scroll bodies 2, 5 is made smaller in a section close to the center from a center winding start point than in a section toward the outer periphery from the section close to the center.

66. 发明专利

JP2000337274A SCROLL COMPRESSOR 失效
公开(公告)号：JP2000337274A
公开(公告)日：2000-12-05
申请号：JP14278899
申请日：1999-05-24
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： MATSUNAGA MUTSUNORI , TAMURA TAKAHIRO , SAKURAI KAZUO , OTAWARA MASARU , IMAMURA HIROYUKI
IPC分类号： F04C29/00 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To prevent flaking, galling and seizure of an auxiliary bearing concerning bearing oiling structure of a scroll compressor for refrigeration, air- conditioning, etc. SOLUTION: It is possible to provide a compressor high in reliability by furnishing a collar 804c on one end surface of an inner ring 804b of a rolling bearing of an auxiliary bearing part, furnishing collars to store a rotor 804a on both ends of an outer ring 804c, restraining vertical motion of the inner ring and the rotor of the rolling bearing of the auxiliary bearing part at the time when an axis of rotation vertically vibrates at the time of starting, etc., by structuring it to support the inner ring collar part with a thrust bearing 808 and preventing flaking and galling.

67. 发明专利

JP2000274362A COMPRESSOR AND ITS ASSEMBLING METHOD 失效
公开(公告)号：JP2000274362A
公开(公告)日：2000-10-03
申请号：JP8094699
申请日：1999-03-25
申请人： HITACHI LTD
发明人： OISHI YASURO , FUKATSU KIYOSHI , WATANABE HIROO , ABE ISAO , SAKURAI KAZUO , MATSUNAGA MUTSUNORI , IMAMURA HIROYUKI , OTAWARA MASARU
IPC分类号： F04B39/00 , F04B39/14 , F04C18/02 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To facilitate the precise positioning of a frame main bearing part and a stator annular passage and the precise positioning of a main bearing and a sub-bearing by using a reference bar and a plurality of collet chucks arranged so as to be concentric to it. SOLUTION: A reference guide bar 26 is inserted so as to extend through a frame main bearing part 22 and a stator annular passage 21 within the casing 2 of a compressor, and a frame 8 is pressed by the reference guide bar 26 and fixed. A plurality of collet chucks 25a and 25b arranged so as to be mutually concentric by the reference guide bar 26 are used to position the frame main bearing part 22 and the stator annular passage 21 so as to be mutually concentric, and the frame 8 is fixed in this state by welding or the like. Thereafter, the reference guide bar 26 is pulled out, and the rotor of a motor part is fitted and fixed by shrinkage fit.

68. 发明专利

JPH1047268A HERMETIC SCROLL COMPRESSOR 失效
公开(公告)号：JPH1047268A
公开(公告)日：1998-02-17
申请号：JP20152096
申请日：1996-07-31
申请人： HITACHI LTD
发明人： SHIIBAYASHI MASAO , MATSUNAGA MUTSUNORI , MIZUNO TAKAO , TOJO KENJI , OKADA MITSUHIRO
IPC分类号： F04C29/02 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To reduce an oil rising quantity of a compressor by arranging plural passage parts to connect upper and lower spaces in a stator part outside edge part of an electric motor, forming a single passage among them as a passage of oil flowing in the downward direction, and forming the other passages as passages of compressed gas being a downward flow or a rising flow. SOLUTION: In a hermetic scroll compressor in which an electric motor chamber upper space is communicated with an electric motor chamber lower space through passages 25 (25a to 25d) between an electric motor stator and a casing inner wall surface 2m of a sealed vessel, a core cut part 3n is arranged in a stator outer peripheral part of an electric motor, and an outer peripheral part of a stator is vertically cut by four places, and a space part is formed. Among the spaces 25a to 25d, the whole area of the space 25a is made to function as a passage to flow oil in the downward direction, and the space 25b is made to function as a passage to flow compressed gas in the downward direction, and the spaces 25c and 25d are made to function as passages to flow compressed gas being a rising flow, respectively. Therefore, an oil separating function of the compressor is improved, and the cooling action on the electric motor is improved.

69. 发明专利

JPH09287579A CLOSED TYPE SCROLL COMPRESSOR 失效
公开(公告)号：JPH09287579A
公开(公告)日：1997-11-04
申请号：JP9984596
申请日：1996-04-22
申请人： HITACHI LTD
发明人： SHIIBAYASHI MASAO , MATSUNAGA MUTSUNORI , MIZUNO TAKAO , TOJO KENJI , OKADA MITSUHIRO
IPC分类号： F04C29/02 , F04C18/02 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To reduce an oil up quantity of a compressor and store oil all the time in a compressor by providing a drain oil passage connecting the circumferential part of an oil drain port in a frame to the passage of the outer circumferential part of a stator in the casing part of closed vessel. SOLUTION: Oil lubricating bearing parts 32, 40 and discharging reaches an oil pressure chamber 41, and is drained from a drain port 37 to the inner wall part 2m of a casing 2a. The drained oil is directly led to the space 25a of a core cut part 3n to be the passage in the outer edge part of the stator of a motor 3, through a drain oil passage 31 formed out of a partition plate 31a and the inner wall 2m of the casing. The oil falls along the casing inner wall 2m as it is. For avoiding to mix compression gas with the drain oil in the lower space 1c of a motor chamber, oil flowing down from the lower end part of the core cut part 3n is directly led to an oil sump 22 of bottom chamber through a drain passage 32.

70. 发明专利

JPH09158863A SCROLL COMPRESSOR 失效
公开(公告)号：JPH09158863A
公开(公告)日：1997-06-17
申请号：JP31771395
申请日：1995-12-06
申请人： HITACHI LTD
发明人： MATSUNAGA MUTSUNORI , MIZUNO TAKAO , SHIIBAYASHI MASAO , OKADA MITSUHIRO
IPC分类号： F04C29/02 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To improve oil supply ability in a scroll compressor in which a first back pressure chamber which is communicated with a bearing part and retains pressure approximately equal to discharge pressure and a second back pressure chamber which retains low pressure are formed, by arranging an oil discharging passage which runs in only one direction in which lubricant oil supplied to a bearing part is introduced to a lubricant oil part. SOLUTION: When a crankshaft is rotated by an electric motor so that a scroll compressor is driven, centrifugal pump action is simultaneously acted by an oil supply passage 22 eccentrically arranged to the crankshaft so that lubricant oil is guided upward the oil supply passage 22 and reaches a bearing part by being passed through an oil supply passage 22b and a space at the upper end of the crankshaft. Circulating oil which is circulated in a turning bearing part 30 from a pressure difference oil supply passage through an oil supply groove 30a from the space at the upper end of the crankshaft and has lubricated the turning bearing part 30, reaches a first back pressure chamber 99, and next is introduced from an oil discharge hole to an oil discharge pipe 20. Hereat, lubricant oil pressure is raised more than discharge pressure so that the valve 201 of the oil discharge pipe 20 is opened by differential pressure, therefore the lubricant oil is discharged to the inside of a sealed container.

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