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1. 发明专利

JPH10318634A VACUUM SUCTION IN REFRIGERATING CYCLE, AIR CONDITIONER AND VACUUM SUCTION DEVICE 失效
公开(公告)号：JPH10318634A
公开(公告)日：1998-12-04
申请号：JP12930597
申请日：1997-05-20
申请人： HITACHI LTD , HITACHI AIR CONDITIONING & REF
发明人： KOKUNI KENSAKU , TSUBOE HIROAKI , OKABE SHINYA , KIMURA TERUO , IWATA TADASHI
IPC分类号： F25B47/00
摘要： PROBLEM TO BE SOLVED: To obtain a vacuum suction method in a refrigerating cycle, an air conditioner and a vacuum suction device which can readily reduce moisture content in the refrigerating cycle and shorten time necessary for obtaining a given degree of vacuum without making the refrigerating cycle complicate. SOLUTION: In a vacuum suction method in which a vacuum suction in a refrigerating cycle which is formed by connecting a compressor 1, a heat- source-side heat exchanger 3 and service-side heat exchangers 11 and 12, an expansion valve 4 by means of connecting pipes 18, 19 is carried out by a vacuum pump 100, the connecting pipes 18, 19 are connected before filling a refrigerant in the refrigerating cycle and air in an atmospheric pressure condition in the refrigerating cycle is combined to one spot from several spots in the connecting pipes 18, 19 and then air is sucked by vacuum by way of a cold trap 101.

2. 发明专利

JP2004279029A Indoor unit 有权
公开(公告)号：JP2004279029A
公开(公告)日：2004-10-07
申请号：JP2004196198
申请日：2004-07-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ENDO TAKESHI , KOKUNI KENSAKU , YASUDA HIROSHI , URATA KAZUMIKI , TSUBOE HIROAKI , IZUSHI MINETOSHI
IPC分类号： F24F1/00 , F24F13/30 , F25B1/00 , F25B39/00 , F28F1/00
摘要： PROBLEM TO BE SOLVED: To provide an indoor unit having improved performance even in using alternative refrigerant to R22 and good assembling property and lower cost with a higher degree of freedom in a required heat exchanging capacity. SOLUTION: The indoor unit of a four-way blowing ceiling embedded type having a heat exchanger having two-line heat transfer pipes overlapping each other, wherein operating fluid for a refrigerating cycle is refrigerant containing two or more types of non-chlorine fluorocarbon mixture, comprises a liquid refrigerant side distributor 4 to which one of the two-line heat transfer pipes is connected, a gas refrigerant side distributor 3 to which the other is connected, and fins 1, 2 formed perpendicular to the direction of the pipe axes of the transfer pipes and efficiently arranged encircling a centrifugal blower 1. Multistage paths each of which is one round in the longitudinal direction of the heat exchanger pass through the two-line fins, respectively, and the heat transfer pipes are bent into square shapes after one path. COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2003035289A Refrigeration unit and compressor 有权
标题翻译：制冷机组和压缩机
公开(公告)号：JP2003035289A
公开(公告)日：2003-02-07
申请号：JP2002137902
申请日：2002-05-14
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUBOE HIROAKI , NAKAYAMA SUSUMU , SARUTA AKIRA , URATA KAZUMIKI
IPC分类号： F04C23/02 , F04C18/02 , F04C28/06 , F04C28/26 , F04C29/00 , F04C29/12 , F25B1/04 , H02K1/27 , H02K21/14 , F04C29/10
CPC分类号： Y02B30/741
摘要： PROBLEM TO BE SOLVED: To provide a reliable refrigeration unit and compressor having high efficiency with a minimized power consumption and drivable by a commercial power source. SOLUTION: This refrigeration unit comprises the compressor 1 driven by an electric motor, a condenser 3 and an evaporator 7. A refrigerant gas is compressed in a compression chamber formed of a fixed scroll 60 and a rotating scroll 57, and the compressed refrigerant gas is passed through the electric motor and a compression vessel provided on the lower part of the electric motor and having an oil basin part 66 arranged therein, and discharged out of the compressor. The electric motor comprises a winding wound on the iron core of a rotator 52 to function as an induction electric motor and a permanent magnet magnetized on the iron core of the rotator 52 to function as a synchronous electric motor, and it is driven as the induction electric motor in starting and as the synchronous electric motor in steady operation.
摘要翻译：要解决的问题：提供可靠的制冷装置和压缩机，其具有高效率并且具有最小的功率消耗并且可由商业电源驱动。解决方案：该制冷单元包括由电动机驱动的压缩机1，冷凝器3和蒸发器7.制冷剂气体在由固定涡旋件60和旋转涡旋件57形成的压缩室中被压缩，压缩的制冷剂气体为通过电动机和设置在电动机的下部的压缩容器，并具有布置在其中的油槽部66，并从压缩机排出。电动机包括缠绕在转子52的铁芯上的绕组，用作感应电动机和磁化在转子52的铁芯上的永磁体，用作同步电动机，并且作为感应驱动电动机在启动时作为同步电动机稳定运行。

4. 发明专利

JP2003021436A Pipeline cleaning method, air conditioner and renewal method thereof 审中-公开
标题翻译：管道清洁方法，空气调节器及其再生方法
公开(公告)号：JP2003021436A
公开(公告)日：2003-01-24
申请号：JP2001202879
申请日：2001-07-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAYAMA SUSUMU , URATA KAZUMIKI , TSUBOE HIROAKI , MATSUMURA KENJI , KOKUNI KENSAKU , YAMADA SHINICHIRO
IPC分类号： F25B1/00 , F25B43/02 , F25B45/00 , F25B47/00
CPC分类号： F25B2400/18
摘要： PROBLEM TO BE SOLVED: To obtain a pipeline cleaning method, the renewal method of an air conditioner and an air conditioner which are high in reliability and capable of effecting a work in a short time at a low price.
SOLUTION: In the cleaning method of pipelines for a refrigerating cycle, the inside of pipelines 16, 17 are cleaned upon changing or replacing a refrigerant for a refrigerating cycle to which a heat source side unit 13 and a utilizing side unit 16 are connected through the pipelines. A cleaning unit 14 equipped with an oil separator 50 and a cooler 21 is connected to the refrigerating cycle to circulate the refrigerant while the oil separated by the oil separator 50 is returned to a compressor 1, without passing through the pipelines 16, 17, and the refrigerant out of the oil separator 50 is cooled by the cooler 21 and is returned into the refrigerating cycle.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：获得管道清洁方法，空调和空调的更新方法，其可靠性高，能够以低价格在短时间内进行工作。解决方案：在冷冻循环管道的清洗方法中，管线16,17的内部在更换或更换通过热源侧单元13和利用侧单元16连接的制冷循环的制冷剂时被清洁管道。配备有油分离器50和冷却器21的清洁单元14连接到制冷循环，以使制冷剂循环，同时由油分离器50分离的油返回到压缩机1，而不通过管道16,17和从油分离器50出来的制冷剂被冷却器21冷却，返回冷藏循环。

5. 发明专利

JP2001272119A INDOOR MACHINE 失效
公开(公告)号：JP2001272119A
公开(公告)日：2001-10-05
申请号：JP2001062772
申请日：2001-03-07
申请人： HITACHI LTD
发明人： ENDO TAKESHI , KOKUNI KENSAKU , YASUDA HIROSHI , URATA KAZUMIKI , TSUBOE HIROAKI , IZUSHI MINETOSHI
IPC分类号： F24F13/30 , F25B1/00 , F25B39/00
摘要： PROBLEM TO BE SOLVED: To use a non-azeotrope refrigerant as a substitute refrigerant, improve a performance by forming properly a refrigerant passage and improve an assembly feature by increasing a degree of freedom relative to a required heat exchanging capacity. SOLUTION: An indoor maching having a heat exchanger 1 used for an evaporator or a condenser of a refrigerating cycle comprises fins 2 overlaid in two rows and obtained by assembling heat transfer pipes 5 in multi-stages and forming them in square shapes by a bending work, a centrifugal fan arranged at the substantially central part of the square shapes, a liquid refrigerant distributor 4 to which the heat transfer pipes 5 of one of the two fins 2 are connected and a gas refrigerant distributor 3 to which the heat transfer pipes 5 of the other of the fins are connected. The working fluid of the refrigerating cycle is the non-azeotrope refrigerant obtained by mixing together two or more kinds of non-chlorine fluorocarbon.

6. 发明专利

JP2001227778A AIR CONDITIONER AND OUTDOOR MACHINE AND REFRIGERATING DEVICE 失效
公开(公告)号：JP2001227778A
公开(公告)日：2001-08-24
申请号：JP2000039729
申请日：2000-02-14
申请人： HITACHI LTD
发明人： TSUBOE HIROAKI , NAKAYAMA SUSUMU , SARUTA AKIRA , URATA KAZUMIKI
IPC分类号： F04B39/06 , F04B49/06 , F04C18/02 , F04C23/00 , F04C28/06 , F04C28/08 , F04C28/26 , F04C29/00 , F24F5/00 , F25B1/04 , F25B13/00 , F25B31/00 , F25B31/02 , F25B41/04 , F25B49/02 , H02K1/27 , H02K21/46 , F04C29/10
摘要： PROBLEM TO BE SOLVED: To obtain an air conditioner and an outdoor machine and a refrigerating device using a refrigerating cycle with high reliability in which consumed power is reduced with high efficiency and which can be driven by a commercial power supply. SOLUTION: An air conditioner comprising a refrigerating cycle comprising a compressor 1 driven by a motor, an outdoor heat exchanger 3 and an indoor heat exchanger 7. The motor is located in a motor chamber in a closed container. Refrigerant gas in the refrigerating cycle passes through the motor. The motor includes a cage type conductor and a bipolarly-magnetized permanent magnet in the iron core of a rotor. The motor is driven by a commercial power supply.

7. 发明专利

JP2001153424A AIR-CONDITIONER 失效
公开(公告)号：JP2001153424A
公开(公告)日：2001-06-08
申请号：JP33454099
申请日：1999-11-25
申请人： HITACHI LTD
发明人： TSUBOE HIROAKI , NAKAYAMA SUSUMU , YASUDA HIROSHI , URATA KAZUMIKI , MATSUMURA KENJI
IPC分类号： F24F11/02
摘要： PROBLEM TO BE SOLVED: To provide a reliable air conditioner that can obtain high heating capability without incorporating an electric heater into an indoor unit, and at the same time can carry out efficient operation when the high heating capabil ity is not required. SOLUTION: The air conditioner is equipped with a refrigerant compression device 1A that is used as the refrigerant compression device of the air- conditioner and is driven by an electric motor 1A being cooled by a refrigerant to be discharged, and a drive electric motor control means that controls an inverter output voltage being applied to the electric motor 1A for changing current flowing to the electric motor 1. When high heating capability is required, the inverter output voltage is controlled so that the current flowing to the electric motor 1A is increased. When normal operation is made, the inverter output voltage is controlled so that a current value becomes the minimum.

8. 发明专利

JP2000179957A AIR CONDITIONER 失效
公开(公告)号：JP2000179957A
公开(公告)日：2000-06-30
申请号：JP35875798
申请日：1998-12-17
申请人： HITACHI LTD
发明人： TSUBOE HIROAKI , KOKUNI KENSAKU , URATA KAZUMIKI , ENDO TAKESHI
IPC分类号： F25B1/00 , F25B43/00
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable air conditioner in which when more refrigerant than one corresponding to an actual piping length is encapsulated, a part of the refrigerant during a refrigerating cycle can be stored, and a returning amount of a liquid refrigerant to a refrigerant compression apparatus is suppressed. SOLUTION: An air conditioner is adapted such that it forms a freezing cycle with a forward circulation or a reverse circulation where a refrigerant compression apparatus 1, a four-way valve 2, an external heat exchanger 3, an external expansion apparatus 5a, and a liquid receiver 7 are passed, and an internal expansion apparatus 12 and an internal heat exchanger 13 are passed in order through a liquid piping 11, and it is returned from the four-way valve 2 to the compression apparatus 1 through a gas piping 14. In the air conditioner, the liquid receiver 7 includes a container having two refrigerant holes in an upper portion therein, and a refrigerant inflow tube 8b and a refrigerant outflow tube 8a which is suspended from two refrigerant holes as gas/liquid mixing means up to an inner bottom of the container and having a lower end opened and having refrigerant gas holes 9b, 9a in an upper portion. Pipings connected with the two refrigerant holes are directly connnected, and a horizontally extending bypass circuit 6 and having an opening/closing valve 6a is provided.

9. 发明专利

JPH10160268A AIR CONDITIONER 失效
公开(公告)号：JPH10160268A
公开(公告)日：1998-06-19
申请号：JP31335796
申请日：1996-11-25
申请人： HITACHI LTD
发明人： ENDO TAKESHI , KOKUNI KENSAKU , YASUDA HIROSHI , URATA KAZUMIKI , TSUBOE HIROAKI , IZUSHI MINETOSHI
IPC分类号： F25B1/00 , F25B13/00
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner in which its low price can be attained even if non-azeotropic refrigerant is used, a variation in composition or the like is restricted to improve a performance and an amount of use of refrigerant is also reduced. SOLUTION: An air conditioner having a freezing cycle in which nonazeotropic refrigerant is applied as working refrigerant is constructed such that a receiver 8 for holding surplus refrigerant within a freezing cycle is arranged between an outdoor heat exchanger 3 and an outdoor expansion device 7. The receiver is comprised of a feeding-out means for feeding out substantially only liquid phase refrigerant in the receiver during a cooling operation and another feeding-out means for feeding out both liquid phase refrigerant and gaseous phase refrigerant within the receiver to a downstream side in the freezing cycle during a heating operation.

10. 发明专利

JP2007163024A Method of cleaning inside of duct, apparatus for collecting impurity, and method of implementation 审中-公开
标题翻译：清洁内部的方法，收集污染的装置和实施方法
公开(公告)号：JP2007163024A
公开(公告)日：2007-06-28
申请号：JP2005359778
申请日：2005-12-14
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUBOE HIROAKI , NAKAYAMA SUSUMU , NAKAMURA KENICHI , TAKENAKA HIROSHI
IPC分类号： F25B45/00 , F25B47/00
摘要： PROBLEM TO BE SOLVED: To efficiently collect impurities remaining in a reused connection duct, thereby reducing the load on the workers of reforming construction work, and to improve reliability and performance.
SOLUTION: After a first gas soluble with respect to the subject of cleaning that remains within a connection duct is pressurized and sealed in the connection duct, and after the gas is left standing in a pressurized state for a predetermined period of time (1202), the inside of the connection duct is blown by using a second gas (1204).
COPYRIGHT: (C)2007,JPO&INPIT

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