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1. 发明专利

DE3935571A1 未知
公开(公告)号：DE3935571A1
公开(公告)日：1990-05-03
申请号：DE3935571
申请日：1989-10-25
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： MURAYAMA AKIRA , KUNO HIROAKI , UCHIKAWA NAOSHI , OKAMOTO JYOJI , IMAMURA HIROYUKI
IPC分类号： F04C28/08 , F04C18/02 , F04C28/16 , F24F11/00 , F25B1/00 , F25B1/04 , F25B13/00 , F25B41/04 , F25B49/02
摘要： An air conditioner provided with a refrigerant circuit formed by connecting with piping a refrigerant compressor, a condenser, an expansion means and an evaporator, an inverter power supply means for controlling the rotational speed of an electric motor for driving the refrigerant compressor, a load detector, and a controller for controlling the inverter power supply means on the basis of an output from the load detector. A refrigerant flow passage controlling mechanism is provided to change the rate at which the refrigerant flows through the condenser on the basis of a control command from the controller, thereby making it possible to reduce or increase the discharge rate without extending the range of changes in the rotational speed of the compressor. The compressor can be controlled according to a wide range of changes in the load to operate with an operation range which ensures high efficiency of the compressor operation.

2. 发明专利

JP2007224798A Scroll compressor 有权
标题翻译：滚动压缩机
公开(公告)号：JP2007224798A
公开(公告)日：2007-09-06
申请号：JP2006046306
申请日：2006-02-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOSUKE YOSHINOBU , IMAMURA HIROYUKI , MATSUNAGA MUTSUNORI , NAKAMURA SATOSHI , HASEGAWA SHUJI , SAKURAI KAZUO
IPC分类号： F04C18/02 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To manufacture a scroll compressor at low cost while maintaining the reliability and accuracy of a thrust bearing member.
SOLUTION: The scroll compressor 1 is provided with a compression mechanism 2 including a fixed scroll and a turning scroll 5, a crank shaft 8 driving a compression mechanism 2, the thrust bearing member 90 supporting an axial direction load of a crank shaft 8, and a frame 7 supporting a radial direction load of a crankshaft 8. The thrust bearing member 90 is manufactured of a part joining a plurality of press formed steel plates.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：在保持推力轴承构件的可靠性和精度的同时以低成本制造涡旋压缩机。解决方案：涡旋压缩机1设置有包括固定涡旋件和转动涡旋件5的压缩机构2，驱动压缩机构2的曲轴8，支撑曲轴的轴向载荷的推力轴承部件90 8以及支承曲轴8的径向载荷的框架7.推力轴承部件90由连接多个压制成形钢板的部分制成。版权所有（C）2007，JPO＆INPIT

3. 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

4. 发明专利

JP2001193676A HERMETICALLY SEALED SCROLL COMPRESSOR 失效
公开(公告)号：JP2001193676A
公开(公告)日：2001-07-17
申请号：JP2000010176
申请日：2000-01-14
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 hermetically sealed scroll compressor with an enhanced performance by certainly returning the oil separated by an oil separator using a low-cost configuration and reducing the heating loss in the sealed vessel. SOLUTION: This hermetically sealed scroll compressor is equipped with an oil separator 22 at the discharge side of a sealed vessel 1, wherein a revolving scroll 6 and a stationary scroll 5 are unshed with each other to form a compressing space 56 with the reduced capacity, and the oil 28 separated by the oil separator 22 is returned to an intermediate chamber of the compressing space 56 through a throttle device 25.

5. 发明专利

JPH06317266A OIL FEEDER FOR SEALED SCROLL COMPRESSOR 失效
公开(公告)号：JPH06317266A
公开(公告)日：1994-11-15
申请号：JP10840093
申请日：1993-05-10
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： IMAMURA HIROYUKI , TAMURA TAKAHIRO , SAKURAI KAZUO
IPC分类号： F04C18/02 , F04C29/00 , F04C29/02 , F04C29/12
摘要： PURPOSE:To absorb an installation error in the perpendicular direction to the driving shaft direction, and stabilize oil feed to a bearing by setting a height of a pedestal in which a spherical slide bearing is inserted higher than a bearing part, and setting an inside diameter of the pedestal larger than an inside diameter of a connecting part. CONSTITUTION:When a driving shaft 7 is rotated by an electric motor 3, a turning scroll 5 is turned by rotation of a crank pin 7a and an action of an autorotation preventive mechanism 9 without making autorotation. As a result, capacity of space defined by respective laps 5b and 6b of the turning scroll 5 and a fixed scroll 6 and respective base plates 5a and 6a is reduced, and gas is sucked from a suction hole 6c, and is delivered from a delivery hole 6d after it is compressed. In this case, oil is introduced to an oil feeding hole 7c of the driving shaft 7 from an oil separator through an oil feeding pipe 15 and an oil feeding pipe joint 13 having spherical slide bearings 10 and 12 on both ends. A pedestal 16 is connected to the spherical slide bearing 12, and a height and an inside diameter of the pedestal 16 are set heigher and larger than the spherical slide bearing 12.

6. 发明专利

JPH06173875A RUNNING FOR A PLURALITY OF COMPRESSORS 失效
公开(公告)号：JPH06173875A
公开(公告)日：1994-06-21
申请号：JP33270192
申请日：1992-12-14
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： YAMAZAKI NORIYUKI , TAMURA TAKAHIRO , SAKURAI KAZUO , IMAMURA HIROYUKI
IPC分类号： F04C18/02 , F04B39/02 , F04B39/12 , F04C23/00 , F04C28/02 , F04C29/00 , F04C29/02 , F04C29/12 , F04C29/10
摘要： PURPOSE:To prevent the increase of the input caused by oil stirred by a rotor of a motor when an oil amount in an oil reservoir container is not reduced and an compressor under stopped condition is started in the case of plural refrigerant compressors installed by returning oil remaining in the stopped compressor to the oil reservoir container. CONSTITUTION:A plurality of refrigerant compressors having pressure in a casing as discharge pressure are combined with each other and discharge connection parts of a plurality of compressors are connected to a separate oil reservoir container 11 through a discharge piping 18. In refrigerant compressors installed in plural numbers having oil supply ports communicating to slide parts of the respective compressors and connected to the oil reservoir container 11 through the oil supply pipings 20, the compressor with the discharge piping 18 having the longest length from the oil reservoir container 11 is always run when one or a plurality of sets of the compressors are run.

7. 发明专利

JPH04308381A SCROLL COMPRESSOR 失效
公开(公告)号：JPH04308381A
公开(公告)日：1992-10-30
申请号：JP7119791
申请日：1991-04-03
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： IMAMURA HIROYUKI , UCHIKAWA NAOSHI
IPC分类号： F04C18/02 , F04C29/00
摘要： PURPOSE:To attain compactness and light weight and reduce the load of a main bearing, inertial force, vibration and oil agitating action caused by a balance weight by improving the shape and position relation of the Oldham's coupling and balance weight of a scroll compressor. CONSTITUTION:A ring-shape Oldham's coupling 5 is provided between a turning scroll 2 and the key groove base seat 4b of a frame 4 supporting a fixed scroll 1. A rotary shaft 3 provided with a crank pin 3a fitted to the boss 2c of the turning scroll 2 is supported on the frame 4 by a main bearing 4a. A balance weight 6, fitted to the rotary shaft 3 between the boss 2c and the main bearing 4a, is provided with an axially protruding weight part 6a protruded to the ring inner side of the Oldham's coupling 5, and a radially protruding weight part 6b positioned below the key groove base seat 5b. The ring of the Oldham's coupling is formed into elliptical shape in such a way as to keep constant small clearance to the outer peripheral turning locus of the weight part 6a.

8. 发明专利

JP2007270697A Scroll fluid machine 审中-公开
标题翻译：滚动流体机
公开(公告)号：JP2007270697A
公开(公告)日：2007-10-18
申请号：JP2006096359
申请日：2006-03-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUJIMURA KAZUYUKI , TSUCHIYA TAKESHI , YANASE YUICHI , AOKI MAKOTO , MIYAKE SHIGEJI , MATSUNAGA MUTSUNORI , NAKAMURA SATOSHI , OTAWARA MASARU , HASEGAWA SHUJI , IMAMURA HIROYUKI , YOSUKE YOSHINOBU , TOJO KENJI
IPC分类号： F04C18/02
CPC分类号： F04C27/005 , F04C18/0215 , F04C23/008
摘要： PROBLEM TO BE SOLVED: To enhance compression efficiency and reliability by reducing the flow resistance of a fluid flowing in and out between a back pressure chamber and a compression chamber.
SOLUTION: This scroll fluid machine comprises the compression chamber 14 formed by rotating a rotary scroll 3 relative to a fixed scroll 2 and the back pressure chamber 12 formed in the rotary scroll on the opposite side of a lap 3a. The scroll fluid machine further comprises a communication passage 22 formed in the end plate of the rotary scroll 3 and allowing a compression chamber side opening 22c opening to the compression chamber 14 side to communicate with a back pressure chamber side opening 22b opening to the back pressure chamber 12. When the rotary scroll 3 is rotated, the compression chamber side opening 22c is opened and closed by the end plate of the fixed scroll, and the communication passage 22 is connected and disconnected.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过降低在背压室和压缩室之间流入和流出的流体的流动阻力来提高压缩效率和可靠性。解决方案：该涡旋流体机械包括通过使旋转涡旋件3相对于固定涡旋件2旋转而形成的压缩室14和形成在回转涡卷上的背压室12，该背压室12在搭接部3a的相对侧。涡旋流体机械还包括形成在旋转涡旋件3的端板中的连通通道22，并且允许通向压缩室14侧的压缩室侧开口22c与背压侧开口22b连通当旋转涡旋件3旋转时，压缩室侧开口22c被固定涡旋盘的端板打开和关闭，并且连通通道22被连接和断开。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2002227778A SCROLL FLUID MACHINERY 失效
公开(公告)号：JP2002227778A
公开(公告)日：2002-08-14
申请号：JP2001028979
申请日：2001-02-06
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： OGINO TAKASHI , OISHI YASURO , ABE ISAO , IMAMURA HIROYUKI
IPC分类号： F04C29/02 , F04C18/02 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To materialize a refrigerating cycle having high performance and high efficiency, by providing an inexpensive and highly productive sealing structure in the engagement part of a frame with a sealed container in order to prevent the heat transmitting performance of a heat exchanger in the refrigerating cycle from being lowered by lubricating oil discharged to the outside of a machine. SOLUTION: The feature of this scroll fluid machinery is that clearance fit is applied to the engagement of a frame with a sealed container, and a clearance produced between the frame and the sealed container is sealed by a packing member equipped with a passage to smoothly lead working fluid and lubricant to an oil separator.

10. 发明专利

JP2000337277A SCROLL FLUID MACHINE 失效
公开(公告)号：JP2000337277A
公开(公告)日：2000-12-05
申请号：JP14279599
申请日：1999-05-24
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： TSUCHIYA TAKESHI , HAYASE ISAO , SAKURAI KAZUO , IMAMURA HIROYUKI , OTAWARA MASARU
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To positively generate a back pressure required to execute appropriate compressive action by constituting a rotary scroll member to close a compression chamber side opening part of a communicating hole with a fixed scroll lap when the compression chamber side opening part crosses the fixed scroll lap during rotary motion. SOLUTION: An end plate of a rotary scroll 24 is provided with a communicating hole 20 comprising a back pressure chamber side opening part 20b communicating with a back pressure chamber, a compression chamber side opening part 20c communicating with a compression chamber 25, and a communicating part 20a for communicating both opening parts 20a, 20b. The compression chamber side opening part 20c is completely closed with the lap of a fixed scroll 23 when the rotary scroll 24 is in an illustrated rotary position. During compressive operation, when the back pressure chamber side opening part 20b communicates with a space 22b to start communication between the back pressure chamber and compression chamber 25, the compression chamber side opening part 20c is opened to the compression chamber 25, and the back pressure chamber side opening part 20b is closed with a sliding face 21 to complete communication between the back pressure chamber and compression chamber 25 to generate required back pressure.

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