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1. 发明专利

JP2006078026A Air conditioner 有权
标题翻译：冷气机
公开(公告)号：JP2006078026A
公开(公告)日：2006-03-23
申请号：JP2004260403
申请日：2004-09-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ISHIGAMI TATSUYA , YOSHIDA YASUTAKA , YAMADA KUNIYOSHI
IPC分类号： F24F11/02 , F25B13/00 , F25B29/00
CPC分类号： F25B13/00 , F25B2313/007 , F25B2313/0231 , F25B2313/025 , F25B2700/2106
摘要： PROBLEM TO BE SOLVED: To improve the efficiency of cooling and heating simultaneous operation while reducing a compressor input by efficiently circulating the heat exchange quantity of a cooling indoor unit and the heat exchange quantity of a heating indoor unit. SOLUTION: This air conditioner comprises an outdoor unit including a compressor 1, a plurality of four-way valves 3a and 3b, a plurality of outdoor heat exchangers 2a and 2b and outdoor electronic expansion valves 4a and 4b connected to the outdoor heat exchangers, respectively; and a plurality of indoor units including indoor electronic expansion valves 7a and 7b, indoor heat exchangers 6a and 6b, and opening and closing valves 8a, 8b, 9a and 9b, and the air conditioner is controlled switchingly to a cooling main mode using the outdoor heat exchangers as condensers in a case that a cooling load is high, compared with a heating value, and to a heating main mode using the outdoor heat exchangers as evaporators in a case that the heating load is large, compared with the cooling load. When the outside air temperature is a predetermined temperature or lower, during operation in the cooling main mode, and the difference from the cooling load to the heating load is a predetermined value or less, the operation is switched to the heating main mode. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提高冷却和加热同时操作的效率，同时通过有效地循环冷却室内机的热交换量和加热室内机的热交换量来减少压缩机输入。解决方案：该空调包括室外单元，其包括压缩机1，多个四通阀3a和3b，多个室外热交换器2a和2b以及连接到室外热量的室外电子膨胀阀4a和4b 交换器; 以及包括室内电子膨胀阀7a，7b，室内热交换器6a，6b以及开关阀8a，8b，9a，9b的多个室内机，并且使用室外机将空调切换至冷却主模式与发热量相比，在冷却负荷高的情况下，作为冷凝器的热交换器和在加热负荷大的情况下，使用室外热交换器作为蒸发器的加热主模式与冷负荷相比。当外部空气温度为预定温度或更低温度时，在冷却主模式下运行，并且与冷却负荷与加热负荷的差异为预定值以下时，切换到加热主模式。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2004324952A Air conditioner and its control method 审中-公开
公开(公告)号：JP2004324952A
公开(公告)日：2004-11-18
申请号：JP2003118052
申请日：2003-04-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOSHIDA YASUTAKA , TANI KAZUHIKO
IPC分类号： F24F11/02 , F25B1/00
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner and its control method capable of stably performing heating operation with proper openings of an outdoor expansion valve and a liquid injection expansion valve.
SOLUTION: In this air conditioner comprising a compressor 4, an outdoor machine 1 and a liquid injection connected with an intermediate pressure part of the compressor 4 through the liquid injection expansion valve 13, and performing the cooling operation and the heating operation, the liquid injection expansion valve 13 and the outdoor expansion valve 10 are operated in interlocking with each other, a controller 3 is mounted for controlling a discharging superheating degree of the compressor, and the liquid injection expansion valve 13 and the outdoor expansion valve 10 are operated in interlocking with each other.
COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JPH11118227A AIR CONDITIONER 失效
公开(公告)号：JPH11118227A
公开(公告)日：1999-04-30
申请号：JP28339897
申请日：1997-10-16
申请人： HITACHI LTD
发明人： NAKAYAMA SUSUMU , KOKUNI KENSAKU , YASUDA HIROSHI , YOSHIDA YASUTAKA , SATO TAKAHARU , YOSHIDA SATORU , NAKAMURA KENICHI
IPC分类号： F24F11/02 , F25B1/00
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner which reduces the number of time of stoppage at operation abnormality. SOLUTION: An air conditioner, which is equipped with a refrigeration cycle where a compressor 81, an outdoor heat exchanger 11, an expandion mechanism 21, and indoor heat exchangers 12 and 13 are connected with one another by a pipe, is equipped with an operation state detection means 141 which detects the operation state of the refrigeration cycle, a means for controlling the compressor within the first capacity control range by the value detected by the operation state detection means 141, a means for stopping the compressor, judging the abnormality of the operation state of the refrigeration cycle, and a means for controlling the compressor, within the second capacity control range smaller than the first capacity control range when the compressor is restarted after stoppage.

4. 发明专利

JPH0979650A MULTI-ROOM AIR CONDITIONER 失效
公开(公告)号：JPH0979650A
公开(公告)日：1997-03-28
申请号：JP23939195
申请日：1995-09-19
申请人： HITACHI LTD
发明人： YOSHIDA YASUTAKA , HIBINO YOZO , YASUDA HIROSHI , NAKAYAMA SUSUMU , KOKUNI KENSAKU
IPC分类号： F24F11/02
摘要： PROBLEM TO BE SOLVED: To provide a multi-room air conditioner which is capable of enhancing annual energy consumption efficiency and performing comfortable and power- saving air conditioning. SOLUTION: This multi-room air condition is provided with a control arithmetic operation device 32 having an online system identification unit 51 which calculates an actual air conditioning load of a house to be intended and a feedback effective annual consumption energy operation volume computing element 47 which maximizes an annual consumption energy consumption efficiency with a consideration given to a probability distribution of outdoor air temperature which is an air conditioning factor. This construction makes it possible to provide maximum total air conditioning application efficiency throughout the year and save power as well.

5. 发明专利

JP2005300006A Multiple type air conditioner 审中-公开
标题翻译：多种类型空调
公开(公告)号：JP2005300006A
公开(公告)日：2005-10-27
申请号：JP2004116312
申请日：2004-04-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAITO KOJI , NAKAYAMA SUSUMU , NAKAMURA KENICHI , URATA KAZUMIKI , TSUBOE HIROAKI , YOSHIDA YASUTAKA
IPC分类号： F25B13/00
摘要： PROBLEM TO BE SOLVED: To secure a cooling capacity that is necessary in a cooling indoor unit when a cooling operation indoor unit and a heating operation indoor unit are operated at the same time.
SOLUTION: The multiple type air conditioner is provided with a liquid connection pipe 22, a low pressure gas connection pipe 24, a high pressure gas connection pipe 26, and a cooling-heating change-over unit 30. The low pressure gas connection pipe 24 and the high pressure gas connection pipe 26 are connected to the cooling-heating change-over unit 30, and the liquid connection pipe 22 is connected to the indoor unit 40. When heating operation is carried out by connecting at least one of a plurality of indoor units 40 to the high pressure gas connection pipe 26 by the cooling-heating change-over unit 30, and connecting the other plurality of indoor units 40 to the low pressure gas connection pipe 4 by the cooling-heating change-over unit 30, opening of an indoor expansion valve 41 is increased and decreased in the indoor unit 40 carrying out cooling operation to compensate capacity.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：当制冷操作室内机和制热运转室内机同时工作时，确保制冷室内机所需的冷却能力。解决方案：多重型空调设有液体连接管22，低压气体连接管24，高压气体连接管26和冷却加热转换单元30.低压气体连接管24和高压气体连接管26连接到冷却 - 加热转换单元30，并且液体连接管22连接到室内单元40.当通过将至少一个通过冷却加热转换单元30将多个室内单元40连接到高压气体连接管26，并且通过冷却 - 加热切换将其它多个室内单元40连接到低压气体连接管4 在执行冷却操作的室内单元40中，单元30，室内膨胀阀41的打开被增大和减小以补偿容量。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2004263986A Air conditioner 审中-公开
公开(公告)号：JP2004263986A
公开(公告)日：2004-09-24
申请号：JP2003056899
申请日：2003-03-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO FUMIHIRO , HATA YOSHIKI , YOSHIDA YASUTAKA
IPC分类号： F24F5/00
摘要： PROBLEM TO BE SOLVED: To cool electronic parts with a simple constitution in an air conditioner having fins for expediting radiation of the electronic parts which generate heat. SOLUTION: In this air conditioner which has a freezing cycle formed by sequentially jointing an external heat exchanger 1, a compressor 5 for compressing refrigerant, an interior heat exchanger 3, and an expansion valve 7 for decompressing the refrigerant by a refrigerant piping 9 in an annular condition, and consists of an inverter element 11 generating heat and the flat-plate type fins 23 protruded from the inverter element 11, protrusion end portions or surface portions of the fins 23 are brought into thermal contact with refrigerant piping 18 on an air suction side of the compressor. Therefore, the refrigerant piping 18 and the inverter element 11 are connected through the fins 23, part of the cold transmitted from the refrigerant piping 18 can be radiated into air by the fins 23, and excessive cooling the inverter element 11 can be avoided, thus preventing condensation with a simple constitution. COPYRIGHT: (C)2004,JPO&NCIPI

7. 发明专利

JP2003240310A AIR CONDITIONER AND OUTDOOR MACHINE USED IN THE SAME 审中-公开
公开(公告)号：JP2003240310A
公开(公告)日：2003-08-27
申请号：JP2002042515
申请日：2002-02-20
申请人： HITACHI LTD
发明人： TANI KAZUHIKO , YOSHIDA YASUTAKA , YOSHIDA SATORU
IPC分类号： F24F5/00 , F24F11/02 , F25B1/00 , F25B13/00
摘要： PROBLEM TO BE SOLVED: To miniaturize a case body and prevent wear of a bearing of a compressor due to liquid compression and lowering of viscosity of refrigerator oil in the compressor. SOLUTION: An air conditioner is constituted in such a way that an outdoor machine having the compressor 1, a four-way valve 5, an outdoor heat exchanger 4, an outdoor expansion valve 2, and an outdoor fan 3 and a plurality of indoor machines 8 having an indoor heat exchanger 10, an indoor expansion valve 12, and an indoor fan 14 are mutually connected by pipes to circulate non-azeotropic mixture refrigerant. It is provided with a receiver 19 provided between the outdoor expansion valve 2 and the indoor expansion valve 12 and arranged on a machine room side. When the number of operation chambers of the indoor machine is changed, change speed of operation frequency is determined in relation to discharge pressure or discharge temperature of the compressor 1. COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2003130492A AIR CONDITIONER 审中-公开
公开(公告)号：JP2003130492A
公开(公告)日：2003-05-08
申请号：JP2001320064
申请日：2001-10-18
申请人： HITACHI LTD
发明人： TSUBOE HIROAKI , NAKAYAMA SUSUMU , ENDO MICHIKO , NAITO KOJI , YOSHIDA YASUTAKA , ENDO TAKESHI
IPC分类号： F25B13/00 , F25B29/00
摘要： PROBLEM TO BE SOLVED: To provide a multi-type air conditioner capable of sufficiently securing cooling and heating capacities, reducing the input of a compressor, and concurrently operating cooling and heating operations using a reduced amount of refrigerant. SOLUTION: In this air conditioner having a refrigerating cycle, a plurality of compressors 1a, 1b, and 1c, an outdoor heat exchanger 3, an outdoor expansion device 4, a liquid receiver 5, and an indoor expansion device 9 are connected to a plurality of indoor units 40 having indoor heat exchangers 10. High pressure gas refrigerant discharged from one of the plurality of compressors 1 is fed to the indoor unit 40 on a heating use side and condensed in the indoor heat exchanger 10. High pressure gas refrigerant discharged from the other side is condensed in the outdoor heat exchanger 3, supercooled after passing the liquid receiver 5, and fed to the indoor unit 40 on a cooling use side.

9. 发明专利

JP2000074514A Battery type air conditioner and cold heat source device used therefor 审中-公开
标题翻译：电池式空调器和冷热源装置
公开(公告)号：JP2000074514A
公开(公告)日：2000-03-14
申请号：JP24929198
申请日：1998-09-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAYAMA SUSUMU , KOKUNI KENSAKU , YASUDA HIROSHI , NAKAMURA KENICHI , YOSHIDA YASUTAKA , UMEDA TOMOMI
IPC分类号： F25B1/00 , F25B7/00 , F25B13/00 , F25B27/00
CPC分类号： F25B13/00 , F25B7/00 , F25B27/00 , F25B2313/023 , F25B2313/025
摘要： PROBLEM TO BE SOLVED: To provide a battery type air conditioner which can cope with the need of the increase of its capacity or the enlargement of the air conditioner in response to an increased or added cooling load, can reduce the day-time power consumption even against an already existing air conditioner for which power peak cutting is not considered, and is suitable for the reduction of noise and its size. SOLUTION: In a battery type air conditioner provided with a compressor 11, a heat source-side heat exchanger 13, a pressure reducing device 16, a refrigerating cycle to which a user-side heat exchanger 17 is annularly connected with a pipeline and through which a refrigerant is made to flow, and a battery 101 is which electric power is stored, a cold heat source device 20 which cools or heats a refrigerant and the battery 101 which drives the device 20 are provided between the heat exchangers 13 and 17.
摘要翻译：要解决的问题：为了提供一种能够应对增加或增加的冷却负载来应对增加其容量或扩大空调的电池式空调，甚至可以减少日间功率消耗针对不考虑功率峰值切割的现有空调，适用于降低噪声及其尺寸。解决方案：在具有压缩机11，热源侧热交换器13，减压装置16，用户侧热交换器17与管道环状连接的制冷循环的电池式空调机中，使制冷剂流动，电池101被蓄电，在热交换器13和17之间设置有冷却或加热制冷剂的冷热源装置20和驱动装置20的电池101。

10. 发明专利

JPH1172260A AIR CONDITIONER 失效
公开(公告)号：JPH1172260A
公开(公告)日：1999-03-16
申请号：JP23415697
申请日：1997-08-29
申请人： HITACHI LTD
发明人： YOSHIDA YASUTAKA , NAKAYAMA SUSUMU , YASUDA HIROSHI , YOSHIDA SATORU
IPC分类号： F24F11/02 , G05B13/02
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner for always stably controlling particularly refrigerant pressure, refrigerant temperature and/or the like to execute comfortable cooling or heating in a plurality of rooms by providing an outdoor unit and a plurality of indoor units in the conditioner. SOLUTION: The air conditioner having a plurality of indoor units connected to one outdoor unit comprises a controller for controlling to feed back, for example, refrigerant discharge temperature of a compressor as a controlled variable by using an outdoor expansion valve travel as a manipulated variable for regulating the controlled variable in such a manner that a transfer function P(s) of the feed-back control system has a rated transfer function Pn(s) at a base and applying robust control theory to satisfy robust stabilizing conditions in change of equipment conditions such as total horsepower of an operation chamber indoor unit, total number, length and diameter of piping, difference in height between the outdoor unit and indoor units, refrigerant sealing amount, type of the refrigerant and the like, and change amount Δ(s) of a transfer function generated according to change of environment such as outdoor air temperature, indoor air temperature and the like.

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