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1. 发明专利

JPS6293493A CRANKSHAFT FOR ROTARY COMPRESSOR 失效
公开(公告)号：JPS6293493A
公开(公告)日：1987-04-28
申请号：JP23329385
申请日：1985-10-21
申请人： HITACHI LTD , TOKYO HEAT TREATING
发明人： HASHIDA SHIGEO , SERIZAWA YUKIO , IIZUKA TADASHI , FUKUDA KAZUJI , ABE NOBUO , TAKEUCHI EIICHI , ABE TOSHIO , SAWARA MASAAKI
IPC分类号： F04C29/00 , C23C8/28 , C23C8/52 , C23C8/72 , F04B35/01 , F04B39/00 , F04C18/356
摘要： PURPOSE:To improve the abrasion resistance and efficiency of a crank-shaft for a rotary compressor at low cost, by generating a compound layer nitrosulphurized of a specific thickness on the surface of a ferrite base fine graphite cast iron which has a specific tensile strength obtained by metal mold casting and the like. CONSTITUTION:A crankshaft of a ferrite base fine graphite cast iron which has a tensile strength more than 25kg/mm and is obtained by metal mold casting and the like and a crankshaft of an ordinary cast iron are machine roughly, annealed for removing distortion 600 deg.CX2hr, and nitrosulphurized 520-570 deg.CX0.5hr after finishing machining so as to generate a compound of about 5mum. As a result, in contrast with the crankshaft of the ordinary cast iron has a straightness less than 4.5mu10 , the crank-shaft of the ferrite base fine graphite cast iron has a straightness less than 1.5X10 or excellent accuracy. Thus, the nitrosulphurized compound layer is generated on the surface of the ferrite base fine graphite cast iron, so that the abrasion resistance of a crankshaft can be improved, therefore an efficient rotary compressor can be manufactured at low cost.

2. 发明专利

JP2002081384A ROTARY PISTON TYPE COMPRESSOR AND MANUFACTURING METHOD FOR THE PISTON 失效
公开(公告)号：JP2002081384A
公开(公告)日：2002-03-22
申请号：JP2000274984
申请日：2000-09-06
申请人： HITACHI LTD
发明人： YAMANAKA TOSHIO , MAEDA YUKIO , KATO KAZUYA , NISHIOKA FUMITAKA , ABE NOBUO , TATENO MINORU , HORIE TATSUO
IPC分类号： F04C29/00 , F04C18/00 , F04C18/32
摘要： PROBLEM TO BE SOLVED: To provide a rotary piston type compressor provided with a shape for processing a blade of a piston integrally formed out of a blade at a low cost. SOLUTION: In the rotary piston type compressor, a piston 1 having a shape that a flat plate-like blade 3 is integrally formed on a cylindrical part 2 is inserted into an eccentric part of a crank shaft 12 and a compression mechanism part 20 for rotating the piston 1 against an inner periphery 11a of a cylinder 11 is accommodated in a case with a motor part. A recessed part or a projection being a standard of a position is formed on a radial end surface of the flat plate-like blade 3.

3. 发明专利

JPH07332261A FIXED SCROLL AND MACHINING METHOD THEREFOR 失效
公开(公告)号：JPH07332261A
公开(公告)日：1995-12-22
申请号：JP13072594
申请日：1994-06-14
申请人： HITACHI LTD
发明人： YAMANAKA TOSHIO , ABE NOBUO , HORIE TATSUO , MASUDA MASAMI , MAEDA YUKIO , KATO KAZUYA
IPC分类号： B23P17/00 , B24B53/075 , F04C18/00 , F04C18/02
摘要： PURPOSE:To provide an efficient and high-precise fixe scroll which is constituted to eliminate high-precise machining of a functionally unnecessary part and to provide a machining method thereof. CONSTITUTION:A machining method for a fixed scroll comprises a first process wherein a spiral lap 1d is finished in such a state to grasp a rough machining part, such as the outer surface 1f and the flange surface 1g of a fixed scroll 1; a second process wherein a grinding work is applied on the outer peripheral surface la, the end plate surface lb, and the addendum surface 1c of the fixed scroll in such a state to grasp the scroll by means of a chuck and the end plate surface 1b is formed in such a state to be recessed from the outer peripheral surface 1a and the addendum surface 1c and a polishing work is applied on the outer peripheral surface 1a, the end plate surface 1b, and the addendum surface 1c after the second process; and a third process wherein a polishing work is then finished in such a state that the grinding grain mark of the polishing work remains on the end plate surface 1b. In the polishing method, the outer peripheral surface 1a, the end plate surface 1b, and the addendum surface 1c are brought into contact with a rotating disc-form grinding wheel and a pressure and polishing are applied by a pressure plate 7 of universal coupling structure from a direction opposite to that of the end plate surface 1b as the fixed scroll 1 is rotated and oscillated.

4. 发明专利

JPH07317682A HORIZONTAL COMPRESSOR 失效
公开(公告)号：JPH07317682A
公开(公告)日：1995-12-05
申请号：JP22180194
申请日：1994-09-16
申请人： HITACHI LTD
发明人： WAKANA TATSUYA , INABA KOICHI , SEKIGUCHI KOICHI , SHIMADA ATSUSHI , TERAI TOSHIYUKI , ABE NOBUO , FUKAMI KUNIO
IPC分类号： F04C29/00 , F04C18/02 , F04C29/02
摘要： PURPOSE:To provide a horizontal compressure capable of freely setting the angle of the bending direction of a lubricating shaft at the time of assembling, improving workability, inexpensive, and having high reliability with a simple means and to provide a bearing structure capable of sufficiently lubricating the spherical bearing section of an auxiliary bearing. CONSTITUTION:A motor 10 and a compression mechanism section 2 connected to the motor 10 via a crank shaft 6 are stored in a sealed case 1 with the shaft center L kept in the horizontal direction, an auxiliary bearing 9 is provided at the opposite position to a main bearing 8 across the motor 10, and a lubricating pipe 21 is fixed to the auxiliary bearing 9 via a lubricating cap 20 in this horizontal compressor. A screw section for fastening the housing 17 of the auxiliary bearing 9 is formed on the cylindrical outer periphery of the lubricating cap 20. The lubricating pipe 21 is connected so that its shaft center coincides with the shaft center of the cylinder bottom section of the lubricating cap 20, the lubricating cap 20 is fastened to the bearing housing 17, the lubricating pipe 21 is bent nearly in the vertical direction, and the opened end is dipped in an oil sump.

5. 发明专利

JPH07119637A METHOD FOR WELDING CONTAINER OF CLOSED TYPE COMPRESSOR 失效
公开(公告)号：JPH07119637A
公开(公告)日：1995-05-09
申请号：JP27024293
申请日：1993-10-28
申请人： HITACHI LTD
发明人： ABE NOBUO , FUKAMI KUNIO , SHIMOYAMA HIROSHI
IPC分类号： F04B39/12
摘要： PURPOSE:To prevent the intrusion of spatter due to the welding into a compressing mechanism by forming each overlap part of a case and a cover material, which form a sealed container, with a shape in which they are elastically engaged with each other, and tightly contacting them to form a spatter sealing part. CONSTITUTION:In a closed type motor-driven compressor, a compressing mechanism and an electric motor are housed inside of a sealed container. This sealed container is formed by welding a cylindrical case 5 and a cover material 6, which are formed by plastically forming a steel plate. In this case, a spatter sealing part is formed in an overlap part 7 of the case 5 and the cover material 6. Namely, a projection 6b is formed over the whole circumference of the outer diameter 6a of the cover material 6, and the cover material 6 is pressed into the inner diameter 5a of the case 5, and the end surface 5b of the case 5 and the cover material 6 in the overlap part 7 are welded. The case 5 and the projection 6b are thereby stuck to seal the spatter 8 generated by the welding in a clearance formed by the projection 6a and the welding part 9.

6. 发明专利

JPH07119635A METHOD FOR SEALING CONTAINER OF CLOSED TYPE COMPRESSOR 失效
公开(公告)号：JPH07119635A
公开(公告)日：1995-05-09
申请号：JP26605493
申请日：1993-10-25
申请人： HITACHI LTD
发明人： ABE NOBUO , FUKAMI KUNIO , SHIMOYAMA HIROSHI , AIUCHI SUSUMU
IPC分类号： F04B39/00 , F04B39/12
摘要： PURPOSE:To prevent the intrusion of spatter generated by welding by interposing the brazing filler material having a melting point lower than that of steel plate in a clearance formed at an overlap part of a cylindrical case and a cover material, which are formed of a steel plate, and fusing it to form a sealed container. CONSTITUTION:In a closed type motor-driven compressor 1, a compressing mechanism 2 and a motor 3 are respectively housed inside of a sealed container 1. In this case, brazing filler material having a melting point lower than that of steel plate is interposed in a clearance formed at an overlap part 7 of a cylindrical case 5 and a cover material 6, which are formed by plastically molding steel plate, to form a sealed container 1. The sealed container 1 is previously heated from outside to fuse the brazing filler material, and the fused brazing filler material intrudes a clearance of the overlap part 7 to weld the case 5 and the cover material 6. Spatter 9 to be generated by electric welding is thereby sealed between the brazing filler material and the welding part to prevent the intrusion of the spatter 9 into the compressing mechanism 2.

7. 发明专利

JPH0569643B2 失效
公开(公告)号：JPH0569643B2
公开(公告)日：1993-10-01
申请号：JP14649485
申请日：1985-07-05
申请人： HITACHI LTD
发明人： TAKASU SHUHEI , MASUDA MASAMI , OOBA MITSUO , ABE NOBUO , YAMANAKA TOSHIO
IPC分类号： B23D37/04 , B23D37/10 , B23D41/08

8. 发明专利

JPH05195967A SCROLL COMPRESSOR AND MANUFACTURE OF CRANKSHAFT THEREOF 失效
公开(公告)号：JPH05195967A
公开(公告)日：1993-08-06
申请号：JP594092
申请日：1992-01-16
申请人： HITACHI LTD
发明人： SHIMADA ATSUSHI , INABA KOICHI , HOSHINO NOBUTOSHI , KAWAMINAMI SHIGEYA , WAKANA TATSUYA , ABE NOBUO , SHIMADA YOSHIYUKI
IPC分类号： F04C18/02 , F04C29/00 , F04C29/12
摘要： PURPOSE:To facilitate assembling while securing reliability and improving the performance of a refrigerating cycle. CONSTITUTION:A ring iron plate 30 with its tip formed into flare shape is previously brazed to a suction pipe 15. After fitting the suction pipe 15 to the suction port of a fixed scroll 3a, the ring iron plate 30 is fitted into the lid chamber 1b of a closed container 1, and the flare part is projection-welded from the inside of the lid chamber 1b. A cup-shaped member provided at its bottom part with a hole smaller in diameter than the outer diameter of a bearing bush pressed into the boss part 4c of a turning scroll is fixed to the boss part 4c so as to eliminate the slip-off of the bearing bush from the boss part 4c. A crankshaft without surface treatment is combined with an auxiliary bearing with surface treatment applied only to the bearing inner diameter side. Cup-shaped shielding material 32 is disposed in such a way as to divide a rotor end ring 13 provided at the lower part of the rotor 12 of a motor 10 from an end coil provided at the lower part of a stator 11 so as to prevent refrigerator oil 14 from being agitated by the rotation of the rotor end ring 13.

9. 发明专利

JPH03206384A ENCLOSED SCROLL COMPRESSOR 失效
公开(公告)号：JPH03206384A
公开(公告)日：1991-09-09
申请号：JP48590
申请日：1990-01-08
申请人： HITACHI LTD
发明人： MACHIDA SHIGERU , TAKEBAYASHI MASAHIRO , IWATA HIROSHI , SEKIGAMI KAZUO , ABE NOBUO
IPC分类号： F04C23/02 , F04C18/02
摘要： PURPOSE:To reduce vibration by providing a crankshaft with a balance weight and a counter weight which give force equilibrating with centrifugal force that occur in association with swivel motion of a swivel scroll and motion of an auto-rotation preventing member. CONSTITUTION:A scroll compressor comprises a scroll compressing section disposed in a closed container 16 and composed of a stationary scroll 1 and a swivel scroll 2 which is driven by a motor 10 on operation, through the intermediary of a crankshaft 6a. In this scroll compressor, a balance weight 4 formed so as to be disposed in an intermediate pressure chamber 5 is provided in the upper section of the crankshaft 6a. A counter weight 11 is provided at the outer end face of a rotor 10b in the motor 10, being faced to the balance weight 4. These weights 4, 11 are formed so as to have values which equilibrate with centrifugal forces that occur in association with swivel motion of the swivel scroll 2 and motion of an Oldham's ring 8 serving as an auto-rotation preventing member.

10. 发明专利

JPH03994A CLOSED TYPE COMPRESSOR AND MANUFACTURE THEREOF AND REFREGERATOR USING SAME 失效
公开(公告)号：JPH03994A
公开(公告)日：1991-01-07
申请号：JP13467289
申请日：1989-05-30
申请人： HITACHI LTD
发明人： HATAKE HIROAKI , ABE NOBUO , NARIYOSHI KOUJI , KINUGAWA NOBUO , SHIBATA AKIRA , IKEDA KAZUO
IPC分类号： F04C29/00 , F01C21/10 , F04C18/344 , F04C18/356 , F04C23/00 , F04C29/04
摘要： PURPOSE:To increase the heat radiation area of a closed case so as to improve the effect by coating the outer face of the case with a paint in which with heat discharge pieces are mixed to provide the heat discharge means comprising the coated film with uneveness. CONSTITUTION:A closed compressor has in its closed case 3 a motor element, a compression element driven thereby, and oil therefor. The outer surface of the case 3 is coated with a paint 5 mixed with metal chips 4 to make the sur face rough with uneveness. Namely, the heat radiating means comprising the coated film with the uneveness on the outer surface of the closed case 3. The coated paint 5 where the heat radiation chips 4 of 30 - 70 capacity % is mixed in as the heat radiation means is applied and hardened, thereby the film of which heat radiation chips protrude on the coated face is formed. It is thus possible for the chips 4 to serve as a radiation fin and increase the heat radia tion area of the case 3.

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