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41. 发明专利

JP2001050179A ROTARY COMPRESSOR, REFRIGERATING CYCLE USING THE COMPRESSOR, AND REFRIGERATOR USING THE COMPRESSOR 失效
公开(公告)号：JP2001050179A
公开(公告)日：2001-02-23
申请号：JP21675599
申请日：1999-07-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUNODA MASAYUKI , WATANABE EIJI , OGAWA YOSHIHIDE , ISHII MINORU , TANI MASAO , KORISHIMA MUNEHISA , YAMAMOTO TAKASHI , KAWAGUCHI SUSUMU
IPC分类号： F04C29/00 , F04C18/00 , F04C18/32 , F25B1/04
摘要： PROBLEM TO BE SOLVED: To prevent reverse flow of gas refrigerant having high temperature and high pressure toward an evaporator disposed on a low pressure side, and improve an efficiency and reliability of a compressor by holding an inside of a tightly closed space for housing a compression mechanism part having a driving shaft for revolting a piston and an electric motor for rotating the driving shaft, to an intake pressure atmosphere. SOLUTION: A rotary compressor is composed of an electric motor part (a) which consists of a stator 1 and rotator 2, and a compression mechanism part (b) driven by the electric motor part (a), they are housed in a hermetic container 13, and is directly attached to the hermetic container 13. In this case, the inside of the enclosed container 13 is held to an intake pressure atmosphere. Accordingly, it is solved that gas coolant having a high temperature and high pressure is made flow in the reverse direction from each contact surface between a cylinder 5 of the compression mechanism part (b), and a frame and a cylinder head toward a low pressure side where an evaporator 36 is disposed, and the temperature of a cooler is prevented from raising without arranging a check valve and the like in a circuit. Simultaneously, a blade motion space of the cylinder 5 is communicated with the inside of the enclosed container 13 so as to reduce sliding loss of the blade.

42. 发明专利

JP2000283062A ROTARY COMPRESSOR 失效
公开(公告)号：JP2000283062A
公开(公告)日：2000-10-10
申请号：JP8552899
申请日：1999-03-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUNODA MASAYUKI , YAMAMOTO TAKASHI , OGAWA YOSHIHIDE , WATANABE EIJI , KORISHIMA MUNEHISA , TANI MASAO , ISHII MINORU
IPC分类号： F04C18/00 , F04C18/32
摘要： PROBLEM TO BE SOLVED: To ensure the passage area of a discharge port without extending the diameter of the discharge port to reduce the pressure loss by bringing the discharge port for a compressed fluid into contact with the side surface of a blade oscillated most to a compression chamber side, and arranging it on at least either one of a frame and a cylinder head in a specified position. SOLUTION: A piston 5 revolves along the inner wall of a cylinder chamber in a cylinder 4 so as to oscillate with the central point on the circumferential surface of a guide 28 as a fulcrum through a blade 501, and compress and discharges a fluid through a discharge port 301. The discharge port 301 is arranged in a position where it makes contact with the side surface of the blade 501 in the maximum rocking angle to the compression chamber 402a side, when axially seen, and the inside surface of the cylinder chamber. Namely, the discharge port 301 is arranged in the position where the distance from the center of the cylinder 4 to the center of the discharge port 301 corresponds to the value obtained by subtracting the discharge port radius from the cylinder inside radius. According to this, the discharge port 301 is prevented from being blocked by the blade 501 in the first half of the discharge stroke to reduce the passage area.

43. 发明专利

JP2000265979A ROTARY COMPRESSOR 失效
公开(公告)号：JP2000265979A
公开(公告)日：2000-09-26
申请号：JP6619499
申请日：1999-03-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGAWA YOSHIHIDE , YAMAMOTO TAKASHI , TSUNODA MASAYUKI , WATANABE EIJI , KORISHIMA MUNEHISA , TANI MASAO , ISHII MINORU
IPC分类号： F04C18/00 , F04C18/32 , F04C18/356
摘要： PROBLEM TO BE SOLVED: To prevent a moment from acting on a piston and to prevent sliding loss by making approximately the center of the effective length of a bearing part constituted of a contact part between the internal circumferential face of the piston and the outer circumference of an eccentric shaft of a drive shaft coincide with the center of the cylinder length. SOLUTION: When a piston 6 revolves along the inner wall of a cylinder chamber 4a in such a state as swinging with the rotation center position of a guide set to a fulcrum via a blade by the rotation of a drive shaft 5, a refrigerant gas sucked from a suction port is compressed and discharged from a discharge port. In this case, relieves 5f of equal length (a) are formed in top/bottom both end faces 5b, 5c of an eccentric shaft 5a of the drive shaft 5. Where the cylinder height is set to H, the effective length Lb of a bearing part constituted of a contact part between the internal circumferential face 6g of the piston 6 and the outer circumferential face of an eccentric shaft 5a of the drive shaft 5 is formulated Lb=H-2a and the central position of the effective length Lb of the bearing part is set to (1/2)H.

44. 发明专利

JPH10281083A SCROLL COMPRESSOR 失效
公开(公告)号：JPH10281083A
公开(公告)日：1998-10-20
申请号：JP8686497
申请日：1997-04-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： ISHII MINORU , OGAWA YOSHIHIDE , TSUNODA MASAYUKI , OGAWA HIROSHI , WATANABE EIJI , IZUMISAWA WATARU
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To stably maintain an excellent lubricating state by substantially matching the axial location of the center of gravity of a slider with balance weight with the center location of the axial rotary sliding range of an oscillating bearing and the outer peripheral surface of a slider part. SOLUTION: The axial location of the center of gravity of a slider 5 with balance weight is set to be the substantially center location of the axial rotary sliding range of an oscillating bearing 4 and the outer peripheral surface of a slider part 5a by a method making the height of a balance weight part 5b higher than the height of the slider part 5a. Thus, an point of application of centrifugal force Fb applying to the slider 5 with balance weight and a point which radially supports the centrifugal force Fb are arranged on substantially the same plane. Therefore, moment is not applied to the slider 5 with balance weight, the parallel states of the oscillating bearing 4 and the outer peripheral surface of the slider part 5a can be always maintained, a partial loading is hot generated, and an excellent lubricating state can be stably maintained.

45. 发明专利

JPH10274178A SCROLL COMPRESSOR 失效
公开(公告)号：JPH10274178A
公开(公告)日：1998-10-13
申请号：JP7622297
申请日：1997-03-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： IKEDA KIYOHARU , TSUNODA MASAYUKI , MOGI SHUJI , OGAWA YOSHIHIDE , SANO FUMIAKI , NAKAJIMA SHINJI
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide a scroll compressor to be manufactured at a low cost, facilitate arrangement, provide given cooling operation of an electric motor, reduce the generation of noise and vibration, and perform quiet operation. SOLUTION: A cylindrical inner shell 14 is mounted by a support member 15 in a closed container 1, and a compressor 2 is arranged closer to the upper part of a closed container 1 in the inner shell 14. An electric motor 6 is provided to drive the compressor 2 closer to the lower part of the closed container 1 in the inner shell 14. Further, a suction pipe 12 is arranged at the closed container 1 and arranged in a position situated facing a suction hole 19 opened to the inner shell 14. This constitution effects inflow of most of sucked gas to the inner shell 14 through the suction hole 19 and the inner shell 14 is supported by a support member 15 to suppress the generation of noise and vibration. Further, mixture of lubrication oil in gas is prevented from occurring and further, there is no need to extend downward the suction pipe 19.

46. 发明专利

JPH08261176A SCROLL COMPRESSOR 失效
公开(公告)号：JPH08261176A
公开(公告)日：1996-10-08
申请号：JP6738395
申请日：1995-03-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： WATANABE EIJI , SANO FUMIAKI , TSUNODA MASAYUKI , OGAWA YOSHIHIDE , OGAWA HIROSHI , IKEDA KIYOHARU , MOGI SHUJI , KOBAYASHI NORIHIDE
IPC分类号： F04C18/02 , F04C27/00 , F04C29/00 , F04C29/12
摘要： PURPOSE: To provide a scroll compressor wherein a seal part can be easily assemble to eliminate a leak of refrigerant gas in the seal part. CONSTITUTION: A fixed scroll 2 and a swivel scroll, engaged with a fixed volute tooth 5 of the fixed scroll 2 to provide a swivel volute tooth of forming a compression chamber 9, are provided in a closed vessel. A high/low pressure separator 13 is provided to oppositely face a base plate 4 of the fixed scroll 2, to provide an inner side seal 15 in a fitting opposed part between both the fixed scroll 2 and the high/low pressure separator 13, and to provide an outer side seal 16 in a plane opposed part between the scroll and separator. In this way, by providing a single part of arranging the seal in the fitting opposed part, the seal can be easily mounted in a prescribed position, and a leak of refrigerant gas can be reduced. Accordingly, manufacture is facilitated to improve operation reliability and compression efficiency.

47. 发明专利

JPH08261175A SCROLL COMPRESSOR 失效
公开(公告)号：JPH08261175A
公开(公告)日：1996-10-08
申请号：JP6305395
申请日：1995-03-22
申请人： MITSUBISHI ELECTRIC CORP
发明人： SANO FUMIAKI , IKEDA KIYOHARU , TSUNODA MASAYUKI , OGAWA YOSHIHIDE , MOGI SHUJI , OGAWA HIROSHI , WATANABE EIJI , KOBAYASHI NORIHIDE
IPC分类号： F04C28/26 , F04C18/02 , F04C28/28 , F04C29/00 , F04C29/10
摘要： PURPOSE: To provide a scroll compressor without a trouble due to a structure of a bleeding hole communicating with a scroll compression chamber and a scroll back pressure chamber. CONSTITUTION: A fixed scroll 2 having a fixed volute tooth 4 and a swivel scroll 9 provided with a swivel volute tooth 12 engaged with the fixed volute tooth 4 to form a compression chamber 11 to be swiveled against the fixed scroll 2 are provided in a closed vessel 1. A screw bar unit having a fine through hole is fitted in a tightening condition by screwing to one of the fixed scroll 2 and the swivel scroll 9, to form a bleeding hole 25 of communicating with a back pressure chamber 23 and the compression chamber 11. In this way, at abnormal pressure rise time of the compression chamber when operated a scroll compressor, the screw bar unit is prevented from coming off. Accordingly, a trouble by the screw bar unit coming off is prevented to improve operation reliability.

48. 发明专利

JPH08261174A SCROLL COMPRESSOR 失效
公开(公告)号：JPH08261174A
公开(公告)日：1996-10-08
申请号：JP6289595
申请日：1995-03-22
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGAWA YOSHIHIDE , SANO FUMIAKI , TSUNODA MASAYUKI , IKEDA KIYOHARU , WATANABE EIJI , OGAWA HIROSHI , KOBAYASHI NORIHIDE
IPC分类号： F04C29/02 , F01C17/06 , F04C18/02 , F04C29/00 , F04C29/04
摘要： PURPOSE: To provide a scroll compressor wherein an electric motor is cooled by refrigerant gas to decrease a heat receiving amount of the refrigerant gas by the electric motor. CONSTITUTION: A swivel scroll 5, engaged with a fixed volute tooth 4 of a fixed scroll 2 to be provided with a swivel volute tooth 8 of forming a compression chamber 7 to swivel against the fixed scroll 2, is provided in a closed vessel 1. The first suction port 29 is provided in a side of a suction pipe 28 of a frame 10 of supporting the swivel scroll 5, and the second suction port 32, constituting an opening area to the opening area or less of the first suction port 29, is provided in the other side of the suction pipe 28. In this way, most of refrigerant gas is sucked directly to the compression chamber 7 from the first suction port 29, to reduce a received heating value of refrigerant gas by an electric motor 19, so as to reeduce a loss. Accordingly, deteriorating performance due to decrease of a weight flow amount of refrigerant has is prevented to improve efficiency.

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