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1. 发明专利

JP2004100470A Scroll compressor 有权
公开(公告)号：JP2004100470A
公开(公告)日：2004-04-02
申请号：JP2002259538
申请日：2002-09-05
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SANO FUMIAKI , FUSHIKI TAKESHI , IKEDA KIYOHARU , NISHIKI TERUHIKO , WATANABE EIJI , SEHATA TAKASHI , TANI MASAO , SEKIYA SHIN , HAGIWARA SHOJI , MURAMATSU SHIGERU
IPC分类号： F04C29/00 , F04C18/02 , F04C29/02
摘要： PROBLEM TO BE SOLVED: To solve the following problems: an increase in seizure and wear at a compressor sliding part, and degradation of heat transfer performance inside a heat exchanger in a refrigerant circuit when lubrication oil taken out of the compressor to the refrigerant circuit from increases, because part of the lubrication oil discharged from the compression chamber flows near a discharge pipe and mixes into a refrigerant gas discharged from the discharge pipe to the outside of the compressor to be taken into the refrigerant circuit in a conventional scroll compressor.
SOLUTION: In this scroll compressor, a main bearing is fixed with a sealed vessel by partial bonding, and disposed so that an outer wall except the partial bonding part may have a prescribed gap to an inner wall of a cylindrical part of the sealed vessel, and a refrigerant passage of the main bearing is formed on an opposite side to an installation part of the discharge pipe in a circumferential direction of the outer wall of the main bearing. An annular part having a step is provided at an upper part of the discharge pipe, thus changing flow of the refrigerant gas passing downward through the gap between the inner wall of the cylindrical part and the outer wall of the main bearing to the refrigerant passage side of the main bearing.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2006283997A Refrigerating cycle device and its operating method 审中-公开
标题翻译：制冷循环装置及其操作方法
公开(公告)号：JP2006283997A
公开(公告)日：2006-10-19
申请号：JP2005100441
申请日：2005-03-31
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SHIBA HIROKUNI , SUZUKI YASUMASA , ASAI TOSHIAKI , YOSOMIYA MASATO , MIKI SHINSUKE , HAGIWARA SHOJI , FUSHIKI TAKESHI
IPC分类号： F25B43/00 , F25B45/00
摘要： PROBLEM TO BE SOLVED: To provide a refrigerating cycle device and its operating method capable of improving reliability by effectively removing an iron chloride, a fatty acid compound and high-molecular weight oil. SOLUTION: In this refrigerating cycle device comprising an outdoor machine having a compressor and an outdoor heat exchanger, and an indoor machine having an indoor heat exchanger, and having a refrigerant circuit for a refrigerating cycle, formed by connecting the compressor, the outdoor heat exchanger and the indoor heat exchanger by pipes, the refrigerant circuit is provided with a first net filter 1 for capturing solid foreign matters, a second net filter 2 having a shape smaller than the first net filter 1 and covering a flow channel cross-sectional area, and capturing an iron compound or fine solid foreign matters, and a combined filter 100 mounted in adjacent to the second net filter 2 and combined with a magnet 3. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提供一种通过有效地除去氯化铁，脂肪酸化合物和高分子量油来提高可靠性的制冷循环装置及其操作方法。解决方案：在包括具有压缩机和室外热交换器的室外机的室内机和具有室内热交换器的室内机的制冷循环装置中，具有通过连接压缩机而形成的制冷循环用制冷剂回路室外热交换器和室内热交换器，制冷剂回路设置有用于捕获固体异物的第一净过滤器1，具有小于第一净过滤器1的形状的第二净过滤器2，截面积和捕获铁化合物或细固体异物，以及安装在第二网过滤器2附近并与磁铁3组合的组合过滤器100.版权所有（C）2007，JPO＆INPIT

3. 发明专利

JPH08247053A SCROLL COMPRESSOR 失效
公开(公告)号：JPH08247053A
公开(公告)日：1996-09-24
申请号：JP5585295
申请日：1995-03-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： HAGIWARA SHOJI , KAWAGUCHI SUSUMU , YAMAMOTO TAKASHI , SUGITA TATSUYA , SUZUKI KENJI , FUSHIKI TAKESHI
IPC分类号： F04C29/12 , F04C18/02 , F04C28/26 , F04C28/28 , F04C29/00 , F04C29/10
摘要： PURPOSE: To resolve the opening delay of a by-pass valve by making the by-pass valve a free valve, and storing it in a discharge chamber provided on the back face of a fixed scroll in a scroll compressor releasing a refrigerant from a pair of by-pass holes provided on the end plate of the fixed scroll to a high- pressure chamber through the by-pass valve. CONSTITUTION: A discharge port 4c for guiding the compressed refrigerant gas to a high-pressure chamber 15 is provided at the center section of the end plate 4a of a fixed scroll 4, and a pair of by-pass holes 4d discharging the refrigerant gas under compression to a high-pressure chamber 15 are provided at other positions. A valve seat 4e provided above the by-pass holes 4d is formed into a ring shape concurrently covering a pair of by-pass holes 4d, and a ring- shaped by-pass valve 9 which is a free valve is arranged above the valve seat 4e. The lift quantity of the bypass valve 9 is regulated by a stopper 10 fixed to the fixed scroll 4, and a discharge chamber 20 is formed with the stopper 10 and the back face center section of the end plate 4a.

4. 发明专利

JPH08226390A SCROLL COMPRESSOR 失效
公开(公告)号：JPH08226390A
公开(公告)日：1996-09-03
申请号：JP166496
申请日：1996-01-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUGITA TATSUYA , SAKAINO YOSHIKI , WADA KATSUYOSHI , HAGIWARA SHOJI
IPC分类号： F04C18/02
摘要： PURPOSE: To provide a scroll compressor of high reliability which, even when operated at very low speed, has little sliding loss at a thrust bearing so that it can be operated at very low speed and which does not cause damage such as wear and seizure of the bearing. CONSTITUTION: A corner form at the outer periphery of the thrust surface 2a of an oscillating scroll constituting a thrust bearing 5a has a taper width of one-twentieth to one time the radius (r) of oscillation and a taper angle of 1/1000 to 1/100rad.

5. 发明专利

JP2002136183A INVERTER CONTROLLER 失效
公开(公告)号：JP2002136183A
公开(公告)日：2002-05-10
申请号：JP2000328714
申请日：2000-10-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： HAGIWARA SHOJI , YAMADA HIDEHIKO
IPC分类号： H02M7/48 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To solve the problem of overload protection in a motor which is controlled for drive in various speeds with an existing inverter with the motor being driven exceeding the allowable current range until the primary current of the motor reaches an overload current limit value, because the motor is controlled under the condition that the overload current limit value is set to the constant value which is almost equal to the maximum current value in the current range, and also to solve the problem, when the overload current limit value is set to a value which continuously changes for the motor drive frequency with amount of data and amount of calculations of microcomputer of the control circuit increasing, to result in cost increase. SOLUTION: This inverter controller comprises an inverter main circuit, a current detector, a current calculator and a control circuit. Moreover, an overload current limit value setting unit is provided to set an overload current limit value, depending on the motor drive frequency outputted from the inverter main circuit to a value which changes stepwise, having a plurality of steps.

6. 发明专利

JPH0735080A SCROLL COMPRESSOR 失效
公开(公告)号：JPH0735080A
公开(公告)日：1995-02-03
申请号：JP17650193
申请日：1993-07-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKIMOTO SUNAO , YAMAMOTO TAKASHI , SUGITA TATSUYA , SUZUKI KENJI , HAGIWARA SHOJI
IPC分类号： F04C28/28 , F04C18/02 , F04C29/10
摘要： PURPOSE:To properly detect the temperature of a scroll compressor installed therein when an air conditioning unit and the like has some abnormality by detecting the temperature of an electric motor using a temperature detection means disposed in the position of the outer surface of a sealed housing which corresponds to the electric motor. CONSTITUTION:A temperature detection means 41 having a temperature switch as its main part is disposed on the outer peripheral surface of a sealed housing 6 and in a position corresponding to the stator of an electric motor 7. If the temperature detection means 41 detects that only the temperature of the electric motor 7 continued to rise over a long period of time, rotation of the scroll compressor is stopped as soon as the temperature of the electric motor 7 reaches a predetermined value. The temperature of the electric motor is thus detected by the temperature detection means disposed in the position of the outer surface of the sealed housing which corresponds to the electric motor, and when the temperature of the electric motor portion has reached the predetermined value the temperature detection means is operated to stop operation of the scroll compressor, so burning of the electric motor and damage to the compressor mechanism can be prevented.

7. 发明专利

JPH0396691A TWO-CYLINDER ROTARY TYPE COMPRESSOR 失效
公开(公告)号：JPH0396691A
公开(公告)日：1991-04-22
申请号：JP23374189
申请日：1989-09-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIRAFUJI YOSHINORI , SATO YUTAKA , KOBAYAKAWA TAIICHI , TAKIMOTO SUNAO , SUZUKI KENJI , HAGIWARA SHOJI , SUZUKI SATOSHI
IPC分类号： F04C23/00 , F04C29/00 , F04C29/12
摘要： PURPOSE:To improve the pressure-resisting strength and the sealing property by applying a burring process only to one side of plural insertion holes responding to plural suction pipes in a sealed container, and providing a projecting joint pipe to the other side pipe. CONSTITUTION:By rotating a driving shaft 4 with an electromotive element 2, plural rolling pistons 10 and 11 eccentric 180 deg. each other are rotated in plural cylinders 5 and 6. As a result, a coolant gas is led into the upper and the lower cylinders 5 and 6 in a sealed container 1 from an accumulator 12 by plural suction pipes 13 and 14 which are independent each other. In this case, a burring process is applied to the insertion hole of the sealed container 1 responding to the suction pipe 13 linking to the larger diameter of cylinder 5. And the other side cylinder 6 is set in the diameter smaller than that of the cylinder 5. And by utilizing a clearance between the outer circumferential surface of the cylinder 6 and the inner surface of the sealed container 1, a joint pipe 16 is projected.

8. 发明专利

JPH08247049A SCROLL COMPRESSOR 失效
公开(公告)号：JPH08247049A
公开(公告)日：1996-09-24
申请号：JP5585395
申请日：1995-03-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUZUKI KENJI , KAWAGUCHI SUSUMU , YAMAMOTO TAKASHI , SUGITA TATSUYA , HAGIWARA SHOJI , FUSHIKI TAKESHI
IPC分类号： F04C18/02 , F04C23/00 , F04C27/00
摘要： PURPOSE: To reduce the pressing force and scrolls applied to a fixed scroll and the warp of a base plate and suppress the excess sliding loss by arranging the outer peripheral sheet face of the fixed scroll and the outer peripheral sheet face of a frame in contact with each other, and providing an elastic member having elastic force in the axial direction between both sheet faces. CONSTITUTION: The outer peripheral sheet face 15 of a fixed scroll 10 and the outer peripheral sheet face 5 of a frame 4 are kept in contact with each other, a partition wall 20 partitioning a sealed container 1 into a high-pressure space 21 and a low-pressure space 22 is provided, and a cylindrical projection 24 protruded downward is provided at the center of the partition wall 20. The projection 24 is slidably coupled with the inside of the cylindrical projection 19 of the base plate 13 of the fixed scroll 10, and a seal member 26 is stored in a recess 25 provided on the outer periphery of the projection 24. Plate springs 27 having a quartered laminated structure are provided to elastically fit the fixed scroll 10 to the frame 4, one end of each plate spring 27 is fixed to the fixed scroll 10, and the other end is fixed to the frame 4 by a bolt 28 respectively.

9. 发明专利

JPH0830467B2 失效
公开(公告)号：JPH0830467B2
公开(公告)日：1996-03-27
申请号：JP13642390
申请日：1990-05-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOBAYAKAWA TAIICHI , SATO YUTAKA , SHIRAFUJI YOSHINORI , TAKIMOTO SUNAO , SUZUKI SATOSHI , SUZUKI KENJI , HAGIWARA SHOJI
IPC分类号： F04B39/00

10. 发明专利

JPH04128591A SEALED ROTARY COMPRESSOR 失效
公开(公告)号：JPH04128591A
公开(公告)日：1992-04-30
申请号：JP24839990
申请日：1990-09-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKIMOTO SUNAO , SATO YUTAKA , KOBAYAKAWA TAIICHI , SHIRAFUJI YOSHINORI , SUZUKI SATOSHI , SUZUKI KENJI , HAGIWARA SHOJI
IPC分类号： F04C29/00 , F04C29/02
摘要： PURPOSE:To improve lubrication and prevent the failure of an electric element by forming an oil shielding tube provided in a space between the coil end inner periphery of the electric element and the lower end section of a rotor with an electric insulating material, and fixing it to a discharge muffler via the elasticity of the oil shielding tube itself. CONSTITUTION:A discharge muffler 28, which is fixed with bolts to a frame 10 fixed at the upper section of the cylinder 9 of a compression element 5, is fixed so that the end section 30 of the discharge muffler 28 is located on the outer periphery of the flange section 19 of the frame 10, and an oil shielding tube 31 molded with an electric insulating material is inserted by utilizing this end section 30. The oil shielding tube 31 is hooked on the end section of the discharge muffler 28 to be fixed by utilizing the expansion of the inner diameter of the oil shielding tube 31 by the elastic opening and closing of a vertical notch 32 provided on the oil shielding tube 31. The lubricant quantity discharged to the outside of a compressor is reduced when the compressor is started and operated, and the burning of the electric element 4 is prevented.

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