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1. 发明专利

JP2005140433A Air conditioner 有权
标题翻译：冷气机
公开(公告)号：JP2005140433A
公开(公告)日：2005-06-02
申请号：JP2003377814
申请日：2003-11-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HARA TAKAHIRO , NAGAMATSU SHINICHIRO , OKABE MASAYUKI , TSUKADA FUKUJI , TAKENAKA HIROSHI
IPC分类号： F24F11/02 , F25B1/00 , F25B13/00
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner capable of suppressing the liquid return to a compressor without enlarging an outdoor unit. SOLUTION: This air conditioner comprises a refrigeration cycle formed by successively connecting the compressor 3, an outdoor heat exchanger 6, an outdoor expansion valve 7, an indoor expansion valve 9, and an indoor heat exchanger 11 through a pipe 1 for circulating refrigerant, in which the passing direction of the refrigerant on the downstream side of refrigerant flow relative to a switching means 13 provided on the discharge side of the compressor 3 is switched by the switching means 13 to perform the switching between cooling operation and heating operation. When the compressor 3 is started to start heating operation, it is operated in a state where the switching means 13 is in cooling operation, the outdoor expansion valve 7 is opened, and an outdoor blower 5a attached to the outdoor heat exchanger 5 is stopped, and after the switching means 13 is switched to the heating operation state, the heating operation is performed. According to this, since the actual heating operation is performed after the liquid refrigerant in the outdoor heat exchanger 5 is pushed to a pipe part 1a between the outdoor expansion valve 7 and the indoor expansion valve 9, the liquid return to the compressor 3 can be suppressed even if a liquid receiver or the like is not provided. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种能够在不扩大室外机的情况下抑制液体返回到压缩机的空调机。解决方案：该空调包括通过循环的管道1连续地连接压缩机3，室外热交换器6，室外膨胀阀7，室内膨胀阀9和室内热交换器11而形成的制冷循环在制冷剂下游侧的制冷剂相对于设置在压缩机3的排出侧的切换单元13的通过方向的制冷剂由切换单元13切换，从而进行制冷运转与制热运转之间的切换。当压缩机3开始开始加热运转时，在切换装置13处于制冷运转的状态下运转，室外膨胀阀7打开，并且安装在室外热交换器5上的室外鼓风机5a停止，在切换装置13切换到制热运转状态之后，进行加热运转。据此，由于在室外热交换器5中的液体制冷剂被推压到室外膨胀阀7和室内膨胀阀9之间的管部1a之后进行实际的加热运转，所以返回到压缩机3的液体可以是即使没有提供液体接收器等也被抑制。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2007093151A Air-conditioner 审中-公开
标题翻译：冷气机
公开(公告)号：JP2007093151A
公开(公告)日：2007-04-12
申请号：JP2005285797
申请日：2005-09-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ODA MASAHIRO , SHIMODA NAONARI , TEZUKA JUNICHIRO , IMAGAWA MASAHARU , URATA KAZUMIKI , NAGAMATSU SHINICHIRO , NAGAHASHI KATSUAKI
IPC分类号： F24F5/00 , F25B39/00
摘要： PROBLEM TO BE SOLVED: To provide an air-conditioner with an outdoor unit having a reduced size adaptable for transportation, installation space and recycling efficiency. SOLUTION: The air-conditioner comprises a refrigerating cycle consisting of an indoor unit having an indoor heat exchanger and an indoor fan and the outdoor unit connected thereto and having compressors 1, a four-way valve 4, an outdoor heat exchanger 2 and a outdoor fan. The air-conditioner has the plurality of compressors 1 and the outdoor heat exchanger 2 of a fin tube type having a heat exchanger tube whose outer diameter is 7.9mm or smaller. The outdoor unit has a dimensional outline width of 900-1,000 mm in view from the front face and a dimensional outline height of 1,800mm or smaller. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种适合于运输，安装空间和回收效率的具有减小尺寸的室外单元的空调。解决方案：空调器包括一个由具有室内热交换器和室内风扇的室内机组成的制冷循环和与其连接的室外单元，具有压缩机1，四通阀4，室外热交换器2 和一个户外风扇。空调器具有多个压缩机1和具有外径为7.9mm以下的换热器管的翅片管型的室外热交换器2。室外机具有从正面观察的尺寸轮廓宽度为900〜1000mm，尺寸轮廓高度为1800mm以下。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2005156017A Air conditioner 有权
标题翻译：冷气机
公开(公告)号：JP2005156017A
公开(公告)日：2005-06-16
申请号：JP2003394870
申请日：2003-11-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAMATSU SHINICHIRO , KATSUMATA NAOTO , ENDO TAKESHI , KAWAGUCHI HIROYUKI
IPC分类号： F24F11/02 , F24F3/06 , F24F11/00 , F25B1/00 , F25B13/00 , F25B41/06 , F25B49/02
CPC分类号： F25B49/025 , F25B13/00 , F25B41/062 , F25B2313/0233 , F25B2313/025 , F25B2400/0751 , F25B2600/021 , F25B2600/0251 , F25B2700/151 , Y02B30/741
摘要： PROBLEM TO BE SOLVED: To prevent comfortability from being impaired by securing air-conditioning capacity to the maximum within the limit according to a user's demand, that is, the limit of power consumption. SOLUTION: In this air conditioner, an outdoor unit 13 having a plurality of compressors 1, 2, a four-way valve 3, heat source side heat exchangers 4, outdoor expanders 5 and outdoor blowers 8, and a plurality of indoor units 12 having motor expansion valves 9, use side heat exchangers 10 and indoor blowers 11, are connected with liquid connection piping 14 and gas connection piping 15. An upper limit of power consumption is set beforehand, and the operation frequency of at least one of the plurality of compressors is reduced by a predetermined control range when an operating current of the air conditioner is larger than a current value based on the upper limit. The operating number of the other compressors is reduced when an operating current of the air conditioner is larger than the current value based on the upper limit of power consumption even if the frequency becomes a lower limit of the operation frequency. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了防止根据用户的需要，即限制功率消耗，将空调容量最大限度地限制在极限内，从而妨碍舒适性。解决方案：在这种空调机中，具有多个压缩机1,2，四通阀3，热源侧热交换器4，室外膨胀机5和室外鼓风机8的室外机13和多个室内具有电动膨胀阀9，使用侧热交换器10和室内鼓风机11的单元12与液体连接配管14和气体连接配管15连接。预先设定功耗的上限，当空调器的工作电流大于基于上限的当前值时，多个压缩机被减小预定的控制范围。即使频率成为操作频率的下限，当空调器的工作电流大于基于功耗的上限的电流值时，其它压缩机的工作电流也减少。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004233015A Air conditioner 有权
公开(公告)号：JP2004233015A
公开(公告)日：2004-08-19
申请号：JP2003025360
申请日：2003-02-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKENAKA HIROSHI , TSUKADA FUKUJI , OKABE MASAYUKI , NAGAMATSU SHINICHIRO
IPC分类号： F24F11/02 , F25B13/00 , F25B47/02
摘要： PROBLEM TO BE SOLVED: To suppress noise generation even if an HFC system alternative cooling medium which can rise a high pressure is used.
SOLUTION: The air conditioner comprises a cooling cycle having a compressor 6, a four-way valve 10, an outdoor heat exchanger 7, an indoor heat exchanger 1, and an electronic expansion valve 5, which are connected sequentially, and an outdoor fan motor to drive a blower 9 of the outdoor heat exchanger 7. The air conditioner switches the four-way valve 10 to a cooling operation mode to perform a reverse cycle defrosting operation if the outdoor heat exchanger 7 frosts during heating operation. The outdoor fan motor is stopped during the defrosting operation, then after finishing the defrosting operation, the outdoor fan motor is activated to switch the four-way valve 10.
COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JP2006002986A Refrigeration cycle device and receiver used in the same 有权
标题翻译：制冷循环装置及其接收器
公开(公告)号：JP2006002986A
公开(公告)日：2006-01-05
申请号：JP2004179067
申请日：2004-06-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IMAGAWA MASAHARU , ENDO TAKESHI , NAGAMATSU SHINICHIRO , NAKAYAMA SUSUMU , TSUBOE HIROAKI
IPC分类号： F25B43/00
摘要： PROBLEM TO BE SOLVED: To efficiently recover impurities remaining in a recycled connection pipe, to conduct renewal work in a short time and to improve the reliability and the performance.
SOLUTION: This refrigeration cycle device constituted by successively connecting a compressor 1, a heat source machine-side heat exchanger 3, expansion devices 4, 21 and a use-side heat exchanger 22, comprises a receiver 5 for storing the liquid refrigerant on the way from the heat source machine-side heat exchanger 3 to the use-side heat exchanger 22, a filter 54 mounted in the receiver 5, a refrigerant outlet/inlet pipe 51 mounted in a state of being projected from the filter 54 toward a bottom part of the receiver 5 at its tip to lead in and out the refrigerant, and a strainer 52 mounted on the tip of the refrigerant outlet/inlet pipe 51.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了有效地回收残留在再循环连接管中的杂质，在短时间内进行更新工作，并提高可靠性和性能。解决方案：通过连续地连接压缩机1，热源机侧热交换器3，膨胀装置4,21和利用侧热交换器22构成的制冷循环装置包括：储存液体制冷剂在从热源机侧热交换器3到利用侧热交换器22的路径上，安装在接收器5中的过滤器54，以从过滤器54突出的状态安装的制冷剂出口/入口管51 接收器5的底部在其顶端引导和排出制冷剂，以及安装在制冷剂出口/入口管51的尖端上的过滤器52.版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2005114184A Refrigerant filling device and refrigerant filling method 有权
标题翻译：制冷剂填充装置和制冷剂填充方法
公开(公告)号：JP2005114184A
公开(公告)日：2005-04-28
申请号：JP2003345140
申请日：2003-10-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： URATA KAZUMIKI , NAITO KOJI , NAKAMURA KENICHI , NAGAMATSU SHINICHIRO
IPC分类号： F25B45/00
CPC分类号： F25B2345/001
摘要： PROBLEM TO BE SOLVED: To automatically fill an additional refrigerant amount proper for a setting state of an air conditioner to secure reliability of a refrigeration cycle. SOLUTION: In this refrigerant filling device, a prescribed amount of refrigerant is filled into an outdoor unit, or the refrigerant is additionally filled, to the refrigeration cycle wherein the outdoor unit having a compressor 1, an outdoor heat exchanger 7, a decompressor 6 and a liquid receiver 5, and an indoor unit having an indoor heat exchanger 3 and a decompressor 4 are connected by piping. In the refrigerant filling device, a main flow part of a supercooling heat exchanger 9 having sub flow parts is disposed between the liquid receiver 7 of the outdoor unit and the indoor unit, one of the sub flow parts is connected to a refrigerant cylinder 50 through a refrigerant filling solenoid valve 14, the other is connected to a suction side of the compressor 1, and opening/closing of the refrigerant filling solenoid valve 14 is controlled in connection with a degree of supercooling of the refrigerant on a main flow part outlet side. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了自动填充适合于空调器的设定状态的附加制冷剂量，以确保制冷循环的可靠性。解决方案：在该制冷剂填充装置中，在具有压缩机1，室外热交换器7，室外热交换器7的室外机的制冷循环中，将规定量的制冷剂填充到室外机或制冷剂中，减压器6和液体接收器5，以及具有室内热交换器3和减压器4的室内机通过管道连接。在制冷剂填充装置中，具有副流路部的过冷却热交换器9的主流部配置在室外机的储液器7与室内机之间，其中一个副流路部通过制冷剂填充电磁阀14，另一个连接到压缩机1的吸入侧，制冷剂填充电磁阀14的打开/关闭与主流出口侧的制冷剂的过冷却程度相关联。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JPH1144433A INDOOR UNIT AND AIR CONDITIONER EMPLOYING SAME 失效
公开(公告)号：JPH1144433A
公开(公告)日：1999-02-16
申请号：JP19819097
申请日：1997-07-24
申请人： HITACHI LTD
发明人： HATA YOSHIKI , SANO TAKASHI , NAGAMATSU SHINICHIRO , MORIYAMA KINGO
IPC分类号： F24F5/00 , F24F13/20 , F24F13/22 , F24F1/00
摘要： PROBLEM TO BE SOLVED: To obtain an indoor unit, capable of effecting environmental protection as well as recycling and reduced in affection to surrounding environment, by a method wherein a cabinet, receiving a suction grille, a ventilation fan and a heat exchanger, is provided with integrally formed expanded urethane at the side parts and the ceiling part thereof. SOLUTION: The main body of a ceiling embedded cassette type indoor unit in a separate type air conditioner is installed in a ceiling through hanging bolts 15 while the indoor unit is provided with a cabinet 4, embedded into the ceiling, and a decorative panel 9, installed under a condition that it is flush substantially with the surface of the ceiling 8. In this case, the cabinet 4 is formed of a case 1 made of steel sheet and internal surface insulating material 2 as well as external surface insulating material 3 are formed through foaming molding of polyurethane on the surfaces of the case 1 by continuous integrated matter without any gap. HFC base refrigerant (R407 C) is employed as refrigerant, circulating through a heat exchanger 7 or a refrigerating cycle, while the air volume of a ventilating fan is increased to improve the performance of heat exchange.

8. 发明专利

JP2002327975A AIR CONDITIONER 失效
公开(公告)号：JP2002327975A
公开(公告)日：2002-11-15
申请号：JP2001134115
申请日：2001-05-01
申请人： HITACHI LTD
发明人： NAKAMURA KENICHI , NAGAMATSU SHINICHIRO , SASAKI TOSHIHARU , TSUBOE HIROAKI , MIYAKE SHIGEJI
IPC分类号： F25B1/00 , F25B43/02
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner which optimizes an oil holding amount in a compressor in a refrigerating cycle having in combination a variable volume compressor and a constant volume compressor and which reduces the oil holding amount of the overall refrigerating cycle. SOLUTION: The air conditioner comprises the refrigerating cycle having a plurality of the compressors, a gas-liquid separator, an oil separator, a heat source side heat exchanger, various types of expansion valves and a user side heat exchanger sequentially connected via a duct in such a manner that an oil discharging connecting port, low-pressure side ducts such as a discharge duct and a suction duct or the like are provided in the compressors. The conditioner further comprises a return oil duct for connecting the connecting port of the compressor to the discharge duct of an upstream side from a confluent point of the discharge duct, and an oil return circuit for connecting the discharge duct of the upstream side from the confluent point of the discharge duct to the low-pressure side duct.

9. 发明专利

JPH1123052A CEILING BUILT-IN TYPE AIR CONDITIONER 失效
公开(公告)号：JPH1123052A
公开(公告)日：1999-01-26
申请号：JP10732698
申请日：1998-04-17
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： NAGAMATSU SHINICHIRO , SANO TAKASHI , HATA YOSHIKI , FUKAZAWA TOSHINORI
IPC分类号： F24F13/20 , F24F13/28 , F24F1/00
摘要： PROBLEM TO BE SOLVED: To provide a ceiling built-in type air conditioner in which an operation under a high pressure may not be performed even in the case that non- azeotropic mixed refrigerant, in particular, R407C refrigerant is used. SOLUTION: There is provided a ceiling built-in type air conditioner having an ornamental panel 7 in which a suction grill 10 is installed at a lower part of a main body 2 of the air conditioner, wherein this air conditioner is comprised of a heat exchanger 3 through which refrigerant of non-azeotropic refrigerant flows; guides 20, 23 which can be fixed to or removed from a suction grill 10; a wire 13 for supporting the suction grill 10 through the guides in such a way that the grill can be freely lifted up or descended; and a filter 11 removably installed at the suction grill 10.

10. 发明专利

JP2002243295A AIR CONDITIONER 失效
公开(公告)号：JP2002243295A
公开(公告)日：2002-08-28
申请号：JP2001036900
申请日：2001-02-14
申请人： HITACHI LTD
发明人： NAGAMATSU SHINICHIRO , SANO TAKASHI , TAKENAKA HIROSHI , NAKAMURA KENICHI
IPC分类号： F25B1/00 , F25B13/00
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner having a means for making energy saving and reliability compatible with each other by facilitating the regulation of the quantity of a refrigerant according to unsteadily-changing indoor load and the length of piping corresponding to various conditions of installation, in the air conditioner wherein a single refrigerant and a non-azeotropic refrigerant are used as a working fluid and a predetermined quantity of the refrigerant corresponding to the piping is sealed in an outdoor unit in advance. SOLUTION: The air conditioner has a refrigeration cycle using the single refrigerant and the non-azeotropic refrigerant as a working fluid. The conditioner comprises a refrigerant flow regulator 5 disposed between a heat source side heat exchanger 3 and an application side (indoor unit side) heat exchanger 11 to retain excess refrigerant in the refrigeration cycle, and provided with a refrigerant gas mixing means or a refrigerant liquid mixing means for the refrigerant functioning as a working fluid to cause a two-layer flow; a bypass 17 disposed parallelly with an outdoor unit side expansion device 4 and having a check valve 7 allowing the working fluid to pass through only at the time of heating operation; and a bypass valve 8 disposed between an indoor unit side expansion device 10 and the refrigerant flow regulator 5 and having a check valve 6 allowing the working fluid to pass through only at the time of cooling operation.

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