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1. 发明专利

JPH0914165A REFRIGERANT ROTARY COMPRESSOR 失效
公开(公告)号：JPH0914165A
公开(公告)日：1997-01-14
申请号：JP16546095
申请日：1995-06-30
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： MIYAKE SHIGEJI , TAMURA TAKAHIRO , IIZUKA YASUNARI , IMAMURA HIROYUKI
IPC分类号： F04C18/02 , F04C29/02
摘要： PURPOSE: To prevent the occurrence of run-out of oil by a method wherein the inside diameter part of the stator of an electric motor disposed in a closed container forms a passage for delivery gas compressed by a compression mechanism part, one end face part in an axial direction forms an inlet for delivery gas, and an oil separator rotated in synchronism with a rotor is arranged at the end part of the rotor of the electric motor. CONSTITUTION: When a revolving scroll 6 effects revolving movement with the aid of an electric motor 3, after refrigerant gas sucked through a suction pipe 15 is compressed through operation of a fixed scroll 5 and the revolving scroll 6, the refrigerant gas mixed with lubrication oil is delivered through a delivery hole 17 to the upper space 14 of a closed container 1. Further, the mixture passes, in order, through a gas passage 18, a guide passage 22, and a gas passage 26 and flows in a lower space 33. In the lower space 33, the mixture passes through an oil separator 29 from a lower end surface. But, the lower end face is positioned below the coil part of a stator 24, and since the outside diameter of the lower end face is larger than the inside diameter of the coil part of the stator 24, the refrigerant gas passes the oil separator 29 with high efficiency.

2. 发明专利

JPH07332265A HERMETIC SCROLL COMPRESSOR 失效
公开(公告)号：JPH07332265A
公开(公告)日：1995-12-22
申请号：JP12857394
申请日：1994-06-10
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： MIYAKE SHIGEJI , TAMURA TAKAHIRO , IMAMURA HIROYUKI , IIZUKA YASUNARI
IPC分类号： F04C29/02 , F04C18/02 , F04C23/00 , F04C29/04
摘要： PURPOSE:To improve operation wherein lubricating oil contained in compressed refrigerant gas is separated and returned to an oil reservoir, to effectively prevent the occurrence of oil rise, and to reliably cool an electric motor. CONSTITUTION:A hermetic scroll compressor comprises a passage 18a to branch a passage, consisting of the groove 18 of the outer periphery of a frame 7 and the inner wall of a closed container, into a plurality of sections; and a throttle part 18b to change the velocity of a flow. The closed type scroll compressor is structured in such a manner that an impedance part 22 to impede a flow of refrigerant gas is located in a middle space between the branch part 18a and a delivery pipe 16.

3. 发明专利

JP2000249084A SCROLL COMPRESSOR 失效
公开(公告)号：JP2000249084A
公开(公告)日：2000-09-12
申请号：JP5224199
申请日：1999-03-01
申请人： HITACHI LTD
发明人： SHIIBAYASHI MASAO , IIZUKA YASUNARI , HAGITA NAOMI , AOKI YOSHITAKE , TOJO KENJI , TAKEBAYASHI MASAHIRO , TSUBONO ISAMU
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To reduce the incurring of an overpressure loss through reduction of incurring of a pressure loss at the initial stage of a delivery process and to enhance reliability by preventing the occurrence of a gall and abnormal friction between two scrolls. SOLUTION: The laps 5b and 6b of a fixed scroll 5 and an orbiting scroll 6 are engaged with each other and moved around a compression chamber 8 to discharge compression gas through a discharge port. In a so formed scroll compressor, a step-form groove part 50 to intercommunicate the compression chamber 8 and the discharge port is provided at a tooth bottom before the lap outside of the orbiting scroll 6 to form a compression chamber 8 is positioned in the discharge port.

4. 发明专利

JP2000205157A SCROLL COMPRESSOR 失效
公开(公告)号：JP2000205157A
公开(公告)日：2000-07-25
申请号：JP610399
申请日：1999-01-13
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： IMAMURA HIROYUKI , TAMURA TAKAHIRO , SAKURAI KAZUO , MATSUNAGA MUTSUNORI , IIZUKA YASUNARI
IPC分类号： F04C29/02 , F04C18/02 , F04C23/00 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To reduce the oil rising quantity by dividing the space formed between a compression mechanism part and an electric motor through a demister, providing the demister on a rotator, and opening a discharge pipe to the space close to a compressor rotating shaft. SOLUTION: When a rotating scroll 6 is rotated through a crank shaft 8 by an electric motor 3, the coolant gas sucked through a gas intake pipe 15 is compressed by the action of a fixed scroll 5 and the rotating scroll 6, and discharged to the upper space 14 of a sealed vessel through a discharge port 17 in the state mixed with lubricating oil. The discharged gas is carried down through a groove provided on the outer surface of a frame 7 and passed in a demister 26 rotating together with a rotor. The oil particle within the gas is adsorbed by the demister 26 and separated from the gas. The separated oil is returned to a space 25 distant from a compressor rotating shaft by the action of centrifugal force, and the lubricating oil drops by the dead weight or runs over the outer wall of the frame 7 into an oil sump 4. On the other hand, the coolant gas is carried to the outside through a discharge pipe 16.

5. 发明专利

JP2005113750A Scroll fluid machine 审中-公开
标题翻译：滚动流体机
公开(公告)号：JP2005113750A
公开(公告)日：2005-04-28
申请号：JP2003347726
申请日：2003-10-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAMURA SATOSHI , TSUCHIYA TAKESHI , MATSUNAGA MUTSUNORI , IIZUKA YASUNARI , OTAWARA MASARU , TANAKA KEIJI , YASUNORI TOSHINORI , HASEGAWA SHUJI
IPC分类号： F04B39/12 , F04B35/01 , F04C18/02 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To reduce input to an electric motor by reducing agitating loss due to agitation of environment gas by a rotor balance weight.
SOLUTION: A compression mechanism part including a fixed scroll 6 and a turning scroll 5 and the electric motor driving the compression mechanism part are stored in the hermetic vessel 1. A drive shaft transmitting driving force of the electric motor to the turning scroll is supported by a main bearing 4a and a sub bearing 4b provided on an opposite side to the main bearing part crossing the electric motor. The rotor balance weight 21 is attached to a lower part of a rotor 19 of the electric motor. A balance weight cover 54 is attached to a sub bearing part to cover surrounding of the rotor balance weight.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过减少由于转子平衡重引起的环境气体的搅动引起的搅动损失来减少对电动机的输入。解决方案：包括固定涡旋件6和转动涡旋件5的压缩机构部分以及驱动压缩机构部分的电动机被存储在密封容器1中。一种将电动机的驱动力传递到转动涡旋件的驱动轴由主轴承4a和与轴承部相对的与副电动机相交的副轴承4b支撑。转子平衡配重21安装在电动机的转子19的下部。平衡重盖54附接到副承载部分以覆盖转子平衡重的周围。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2004293530A Fluid compressor 审中-公开
公开(公告)号：JP2004293530A
公开(公告)日：2004-10-21
申请号：JP2003091020
申请日：2003-03-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OTAWARA MASARU , TANAKA KEIJI , TSUCHIYA TAKESHI , MATSUNAGA MUTSUNORI , IIZUKA YASUNARI , NAKAMURA SATOSHI , YASUNORI TOSHINORI , HASEGAWA SHUJI , MURAI YOICHI
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To provide a fluid compressor equipped with an oil supply pump assuring an excellent reliability of an oil supply pump while the pump performance is well maintained without generating an excessive load on the pump.
SOLUTION: The fluid compressor 1 is equipped with a compressing mechanism part 2, an electric motor 600, a rotary shaft 300, bearings 401, the oil supply pump 900 to supply the lubricating oil to the compressing mechanism part 2 and the bearings 401at the end of the counter-compressing mechanism part side of the rotary shaft 300 with respect to the motor 600, a pump supporting member 802 to support the oil supply pump 90, and a coupling tool 910 to couple the oil supply pump 900 with the pump supporting member 802. The coupling tool 910 is arranged so that a gap to absorb swings in turning of the end of the rotary shaft 300 both in the axial direction and the radial direction between the water supply pump 900 and the pump supporting member 802.
COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2001082360A CLOSED TYPE SCROLL COMPRESSOR 失效
公开(公告)号：JP2001082360A
公开(公告)日：2001-03-27
申请号：JP26158699
申请日：1999-09-16
申请人： HITACHI LTD
发明人： SAKURAI KAZUO , CHIAKI TAKAO , IIZUKA YASUNARI
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To minimize the mist of a refrigerant and a lubricating oil and reduce the oil consumption by forming a passage from a fixed scroll delivery port along the inner wall of a closed container. SOLUTION: A compressor mechanism part 2 is disposed on the upper side of a closed container 1, an electric motor part 3 is disposed on the lower side, and an oil sump 4 for a lubricating oil is formed in the bottom part thereof. The lubricating oil is delivered from an oil feeding device 14, passes an oil feed passage 10b, and lubricates a main bearings 11, a lower bearing 12, and a swing bearing 13. The oil flows into a compression chamber via. an intermediate pressure chamber 21 and, in the state of being mixed with refrigerant gas, is delivered from a delivery port 5c through pipes 15 and 17 and along the inner wall 18 of the closed container. Also, because the mixing gas of the refrigerant and lubricating oil is delivered along the inner wall 18 of the closed container with large area, the separation of the refrigerant from the lubricating oil is surely performed by suppressing the mist to the minimum. Then, the lubricating oil is led to the oil sump 4 at the bottom part of the closed container along the inner wall 18 of the closed container with the assistance of the self- weight of the lubricating oil.

8. 发明专利

JP2005163687A Electric compressor and its manufacturing method 有权
标题翻译：电动压缩机及其制造方法
公开(公告)号：JP2005163687A
公开(公告)日：2005-06-23
申请号：JP2003405373
申请日：2003-12-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUJIMURA KAZUYUKI , TSUCHIYA TAKESHI , YANASE YUICHI , NOZAWA SHIGEKAZU , MATSUNAGA MUTSUNORI , IIZUKA YASUNARI , NAKAMURA SATOSHI , OTAWARA MASARU , YASUNORI TOSHINORI , HASEGAWA SHUJI
IPC分类号： F04C23/02 , F04B35/01 , F04C18/02
摘要： PROBLEM TO BE SOLVED: To reduce costs by reducing the number of manufacturing processes and to prevent bending of a rotational shaft during operation due to outer diameter reduction of the rotational shaft itself, in an electric compressor.
SOLUTION: The electric compressor is provided with an electric motor having a rotor 6 and a stator 5; the rotational shaft 7 inserted into and fixed to a central hole of the rotor 6; a compression part driven by an eccentric part 7a provided for the rotational shaft 7, and performing compression operation; and a balance weight 10 mounted to the rotational shaft 7 so as to compensate for unbalanced force generated by rotational drive of the rotational shaft 7 and compression operation of the compression part. One side end part of the balance weight 10 functions as a positioning part on which one side end part of the rotor 5 is abutted.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过减少制造工艺的数量并且在电动压缩机中由于旋转轴本身的外径减小而在操作期间防止旋转轴的弯曲来降低成本。解决方案：电动压缩机设置有具有转子6和定子5的电动机; 插入并固定到转子6的中心孔的旋转轴7; 由设置在旋转轴7上的偏心部7a驱动的压缩部，进行压缩动作; 以及安装在旋转轴7上的平衡配重10，以补偿由旋转轴7的旋转驱动产生的不平衡力和压缩部的压缩操作。平衡重10的一侧端部作为转子5的一个侧端部抵接的定位部。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2004293533A Scroll compressor 审中-公开
公开(公告)号：JP2004293533A
公开(公告)日：2004-10-21
申请号：JP2003091087
申请日：2003-03-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MATSUNAGA MUTSUNORI , TSUCHIYA TAKESHI , IIZUKA YASUNARI , NAKAMURA SATOSHI , OTAWARA MASARU , TANAKA KEIJI , YASUNORI TOSHINORI , HASEGAWA SHUJI , SATO EIJI , HAYASE ISAO , YANASE YUICHI
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To make it possible to ensure smooth lubrication of end plate surfaces in a scroll compressor through adoption of a simple structure and to prevent the cut-off or baking on end plate surfaces by lowering sliding surface pressure.
SOLUTION: The scroll compressor 1 is equipped with a fixed scroll 100 made of a spiral-shaped lap 102 erected on a board 101; with a revolving scroll 200 made of a spiral shaped lap 202 erected on a board 201, and arranged to revolve in engagement with the fixed scroll 100 so as to form a compression chamber 130; and with an external circumference space 411 in which a pressure lower than the discharge pressure prevails, and to which oil is supplied outside the revolving scroll 200. The fixed scroll 100 has, on the external circumference side of the compression chamber 130, a end plate surface 105 to which the board 201 for the revolving scroll 200 touches. Further on the end plate surface, a closed oil supply groove 106 is formed with one of the ends linked to the external space 411 and another end extending to the circumference direction.
COPYRIGHT: (C)2005,JPO&NCIPI

10. 发明专利

JP2003239874A SCROLL COMPRESSOR 失效
公开(公告)号：JP2003239874A
公开(公告)日：2003-08-27
申请号：JP2001169049
申请日：2001-06-05
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： UEDA HIDEYUKI , TANAKA KEIJI , MIYAKE SHIGEJI , IMAMURA HIROYUKI , YANASE YUICHI , IIZUKA YASUNARI , TOJO KENJI
IPC分类号： F04C29/00 , F04C18/02 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To improve reliability of a scroll compressor using coolant containing no chlorine such as HFC as working fluid by supplying lubricating oil to a sliding surface of a key and a key groove provided on a self rotation preventing member and a fixed member, and preventing contact of the key and the key groove. SOLUTION: In the scroll compressor using coolant containing no chlorine such as HFC, both end parts of the surface of the key of the self rotation preventing member sliding on the key groove of the fixed member is formed with a curved line of a fixed curvature radius of 10 μm or more. COPYRIGHT: (C)2003,JPO

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