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1. 发明专利

JPH0617779A TWO-CYLINDER CLOSED MOTOR-DRIVEN COMPRESSOR AND ASSEMBLY METHOD THEREOF 失效
公开(公告)号：JPH0617779A
公开(公告)日：1994-01-25
申请号：JP17700892
申请日：1992-07-03
申请人： MITSUBISHI ELECTRIC CORP
发明人： MOCHIZUKI TETSUYA , KAWAGUCHI SUSUMU , SAKAI MASATOSHI , SATO KOICHI , MAEYAMA HIDEAKI
IPC分类号： F04C23/00 , F04C29/00 , F04C29/06
摘要： PURPOSE:To prevent the generation of noise owing to axial movement of a rotary shaft and the backlash of a fastening part and improve assembly precision. CONSTITUTION:A two-cylinder closed motor-driven compressor is provided with a clearance A22 which is a clearance between the eccentric part 5a of a first rotary shaft for driving a first compression element 6 and an auxiliary bearing 17 and makes contact when a first rotary shaft 5 is moved in the direction of a first compression element 6, and a clearance B23 which is a clearance between the eccentric part 5a of the first rotary shaft and a first main bearing 15 and generated when the clearance A22 makes contact. Further, the compressor is provided with a clearance C24 which is a clearance between the eccentric part 7a of a second rotary shaft for driving a second compression element 12 and an auxiliary bearing 18 and exceeds the clearance B23 provided when the clearance A22 makes contact, and a clearance D25 which is a clearance between the eccentric part 7a of the second rotary shaft and a second main bearing 16 and provided when the clearance A22 makes contact.

2. 发明专利

JPH03281992A HORIZONTAL TYPE COMPRESSOR 失效
公开(公告)号：JPH03281992A
公开(公告)日：1991-12-12
申请号：JP8444590
申请日：1990-03-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAGUCHI SUSUMU , SAKAI MASATOSHI , MOCHIZUKI TETSUYA , SHIMIZU TATSUAKI , SATO KOICHI , MAEYAMA HIDEAKI
IPC分类号： F04B39/00 , F04C23/02
摘要： PURPOSE:To prevent generation of a hitting by striking the inner surfaces of inner caps to hold hanging springs provided to an inner body which consists of a compression element and an electromotive element, and the peripheries of the hanging springs at first, and after that, striking the inner surfaces of shell caps and the peripheries of the inner caps. CONSTITUTION:An inner body 103 composed of a compression element 10 and an electromotive element 102 is suspended up and down by coil-formed hanging springs 2 suspended in a sealed container 1, and inner caps 3 furnishing plural cylindrical bodies with different diameters which hold the hanging springs 2 to cover their one ends are installed to the inner body 103 side of the hanging springs 2. And shell caps 4 furnishing cylindrical bodies, to hold to cover the ends of the hanging springs 2 opposite to the inner caps 3, are provided. And the vibration of the compressor in a transport is suppressed by contacting the inner surfaces of the inner caps 3 and the peripheries of the hanging springs 4 at first, and after that, the peripheries of the inner caps 3 and the inner surfaces of the shell caps 4 are contacted.

3. 发明专利

JPH03222886A VANE HOLDER FOR ROTARY COMPRESSOR 失效
公开(公告)号：JPH03222886A
公开(公告)日：1991-10-01
申请号：JP1816090
申请日：1990-01-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： SATO KOICHI , KAWAGUCHI SUSUMU , MAEYAMA HIDEAKI , SAKAI MASATOSHI
IPC分类号： F04C18/356
摘要： PURPOSE:To maintain the engagement between a vane and a holder normally by installing an operating fitting having a vane holder and a spring engaged at both ends, rockably in the neighborhood of a lit, and adjoining an interfering part of the portion into the slit. CONSTITUTION:A holder 6 and a spring 8 are engaged with both ends of an operating fitting 7, and this operating fitting 7 is installed in the neighborhood of a slit 1a, where a vane 4 is slidden up and down, after the central part is adjoined to a top part of the slit 1a. When the central part of the holder 6 will not be fitted in a recess groove 5 of a top part of the vane 4 in a normal state due to inadvertence at time of assembling, if the initial compression stroke begins, an interfering part 7a of this operating fitting 7 and the vane holder 6 are made contact with each other by rocking motion of the operating fitting 7. Accordingly, pressing force A is added to them, so that they are pressed by a resultant with spring force B of the spring 8, therefore fitted in the recess groove 5, coming into a regular fitted state. In consequence, any abnormal wear in the holder 6 and the vane 4 is thus preventable.

4. 发明专利

JPH03156182A SEALED ROTARY COMPRESSOR 失效
公开(公告)号：JPH03156182A
公开(公告)日：1991-07-04
申请号：JP30262089
申请日：1989-11-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAGUCHI SUSUMU , MAEYAMA HIDEAKI , SAKAI MASATOSHI , SATO KOICHI , SHIRAFUJI YOSHINORI , SUGITA TATSUYA
IPC分类号： F04B39/12 , F04C29/00 , F04C29/04 , F04C29/06 , F04C29/12
摘要： PURPOSE:To restrain transmission of vibration of a compression element to a sealed container by providing parallel to a crank shaft a flexible suction pipe having one end fitted into the compression element and the other end into an inlet gas suction portion provided in the sealed container. CONSTITUTION:A compression element 3 and an electromotive element 2 are connected together by a frame 6 and both are elastically supported to a sealed container 1 by a spring 12, and vibration caused by load fluctuation during the process of compressing by the element 3 is absorbed by the spring 12 so that transmission of vibration to the container 1 is prevented. Lubricating oil stored in the bottom portion of the container is fed from an oil pipe 16 to the sliding portion of each portion of the element 3 by an oil pump 9 fixed to a cylinder head 7 through an oil feed hole provided in a crank shaft 4. A refrigerant gas from the evaporator of a refrigerating cycle is allowed to flow into the container from an external suction pipe 14 and, because an suction pipe 11 has one end fitted into the head 7 and the other end into an inlet gas suction portion 10, the refrigerant gas is directly introduced from outside the container 1 into a cylinder room 5 and thereby lowering of density due to heating of the inlet refrigerant gas is prevented and the suction efficiency is enhanced.

5. 发明专利

JPH0367094A ROTARY COMPRESSOR 失效
公开(公告)号：JPH0367094A
公开(公告)日：1991-03-22
申请号：JP20409889
申请日：1989-08-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAKAI MASATOSHI , KAWAGUCHI SUSUMU , SUGITA TATSUYA , MAEYAMA HIDEAKI
IPC分类号： F04C29/02
摘要： PURPOSE:To reduce the number of components and to obtain a rotary compres sor with high reliability by storing an inner and an outer gears in a space part formed on the part opposite to the cylinder side of a cylinder head so as to integrally constitute a gear pump. CONSTITUTION:A driving force is transmitted to a gear pump 11 from a rotation axis 4 by driving of the rotation axis 4, and this pump 11 is operated so as to suck a lubricating oil to be reserved at the bottom part of a closed container 1. In this case, the gear pump 11 is rotated by the rotation axis 4, and it is necessary that an eccentric amount between the center of a space part 6a of a cylinder head for storing the gear pump 11 and the center of the rotation axis 4 is appropriate. However, as the space part 6a is formed at the rotation axis and the cylinder head 6 which is a bearing of this axis and the eccentric amount between the center of the rotation axis 4 and the center of the space part 6a can be set without putting another part between them, accuracy in machining of the cylinder head 6 can be maintained and a function of the gear pump 11 as an oil feeder can be obtained with accuracy.

6. 发明专利

JPH02294591A HORIZONTAL TYPE ROTARY COMPRESSOR 失效
公开(公告)号：JPH02294591A
公开(公告)日：1990-12-05
申请号：JP11671789
申请日：1989-05-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAKAI MASATOSHI , TAKIMOTO SUNAO , SATO YUTAKA , NAKANE KAZUHIRO
IPC分类号： F04C29/04
摘要： PURPOSE:To sufficiently cool an electrically-driven element by a method wherein most of compressed refrigerant gas is guided through the flow passage of the outer peripheral part of the fixed core of the electrically-driven element to an end part on the electrically-driven element side, from which most of the refrigerant gas is guided through a gap between the stator and the rotor of the electrically-driven element to the part, on the inner peripheral side of a stator coil, of a central space part. CONSTITUTION:Gas compressed by a compression element 3 is delivered to a part 13a on the outer peripheral side of a delivery muffler 13, and is guided from a delivery port 14 through the part, on the outer peripheral side of a stator coil 5b, of a central space part 15 to a delivery gas flow passage 19. The delivery port 14 is positioned facing the delivery gas flow passage 19 and a part 13b on the inner peripheral side of the delivery muffler 13 is overlapped on the inner peripheral side with the stator coil 5b with a narrow gap therebetween, delivery gas is prevented from leaking through the stator coil 5b to a position on the inner peripheral side. The delivery gas is further guided through a space part 18 to a gap 21, the part on the inner peripheral side of the stator coil 5b, a communicating gas hole 26, the part 13b on the inner peripheral side, and a space part 16, and is guided through a delivery pipe 17 to a refrigerant circuit outside a closed container 1. This constitution performs enough cooling of an electrically-driven element 2.

7. 发明专利

JPH0219688A HORIZONTAL ENCLOSED ROTARY COMPRESSOR 失效
公开(公告)号：JPH0219688A
公开(公告)日：1990-01-23
申请号：JP17038388
申请日：1988-07-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKIMOTO SUNAO , SATO YUTAKA , SAKAI MASATOSHI , NAKANE KAZUHIRO
IPC分类号： F04C29/02
摘要： PURPOSE:To reduce the size of an oil supply means by providing a means for supplying lubricant from a lower enclosed container to an oil supply path through utilization of static pressure drop in a crankshaft or a bearing due to high speed passage of refrigerant. CONSTITUTION:Gas delivered through driving of a compressor passes through a path 18 arranged in a compressor element 3 and delivered into an enclosed container 1, and since the cross-section of the path 18 is smaller than that of a delivery muffler 12 the flow speed of gas increases. At this time, dynamic pressure of delivery gas increases to lower the static pressure correspondingly, the static pressure in the container 1 drops below that in the path 18. When the path 18 is communicated with an oil supply path 13 and the space at the communicating section is separated from the enclosed container 1, the static pressure in the oil supply path 13 drops. Consequently, lubricant 17 is sucked from the bottom of the enclosed container 1 and supplied to an oil supply hole 4a in a crankshaft 4 thus lubricating bearing sections.

8. 发明专利

JPH01187392A CLOSED TYPE ROTARY COMPRESSOR 失效
公开(公告)号：JPH01187392A
公开(公告)日：1989-07-26
申请号：JP1141288
申请日：1988-01-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKIMOTO SUNAO , SATO YUTAKA , SAKAI MASATOSHI , NAKANE KAZUHIRO
IPC分类号： F04C29/00 , F04C23/00 , F04C29/06
摘要： PURPOSE:To easily make bolt penetrating holes coincide with the screw holes of a cylinder at the time of fastening bolts by shifting, in a specified direction, the bolt penetrating holes, which are provided through a frame and the cylinder head of a compressive element so as to fasten a discharge muffler. CONSTITUTION:A compressor is held inside a closed case 1 in the condition that an electric motor-driven element 2 and a compressive element 3 are connected to each other by a crankshaft 3a. Concerning the compressive element 3, a frame 7 and a cylinder head 8, with which both upper and lower end surfaces of a cylinder 4 are sealed, are fastened to screw holes 9b of the cylinder 4 with bolts 5a, 5b. A discharge muffler 6 is also fastened to the screw holes 9b with the bolts 5a, 5b. In this structure, the bolt penetrating holes 10b of the frame 7, which is provided to be fastened to the cylinder 4 with the discharge muffler 6, are shifted by a specified angle of theta to the circular pitch of screw holes 9b in the direction C which is reverse to the fastening directions of bolts 5a, 5b.

9. 发明专利

JPH06253512A ROTOR FOR MOTOR 失效
公开(公告)号：JPH06253512A
公开(公告)日：1994-09-09
申请号：JP3641493
申请日：1993-02-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAKAI MASATOSHI , MOGI SHUJI , MAEYAMA HIDEAKI , KAWAGUCHI SUSUMU
IPC分类号： H02K15/02 , H02K17/16
摘要： PURPOSE:To reduce manpower and cost by inserting a tubular sleeve into a laminated rotor core in the way of manufacturing process. CONSTITUTION:A tubular sleeve 4 is inserted, by shrinkage fit or press fit, into a laminated rotor core 1 prior to aluminium diecast for integrating rotor conductors and end rings 2 coupled to the opposite ends thereof.

10. 发明专利

JPH06249171A UNIT PIPING SYSTEM FOR ROTARY COMPRESSOR 失效
公开(公告)号：JPH06249171A
公开(公告)日：1994-09-06
申请号：JP3543993
申请日：1993-02-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAEYAMA HIDEAKI , SAKAI MASATOSHI , KAWAGUCHI SUSUMU
IPC分类号： F04C23/00 , F04C29/00 , F04C29/12
摘要： PURPOSE:To control the capacity of a compressor by the external pipes of the compressor when the compressor of two-cylinder system is mounted on a unit such as refrigerator, etc. CONSTITUTION:A pipe of specified length and diameter is connected to two suction pipes 3a and 36b of a compressor 1, and these two pipes are further connected to the inside of a suction muffler 2 installed on a unit 5. Thus, as compared with a compressor formed integrally with suction muffler, the length of pipes can be selected freely in this compressor.

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