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1. 发明专利

MY121230A AIR CONDITIONER 未知
公开(公告)号：MY121230A
公开(公告)日：2006-01-28
申请号：MYPI9603164
申请日：1996-08-02
申请人： HITACHI LTD
发明人： TAKADA YOSHIHIRO , KAWABE SHIN ICHI , FUNAKOSHI SUNAHO , NAKAMURA HIROO , MATSUO KAZUYA , KANEKO TOMOMICHI , YOKOYAMA HIDENORI , OSODO SOUICHI , MORIMOTO MOTOO , YASUNAGA YASUHISA , IMOTO TSUTOMU
IPC分类号： F04D5/00 , F04D17/04 , F04D29/66 , F24F13/24
摘要： THERE IS PROVIDED A CROSS-FLOW FAN FOR AN INTERIOR UNIT OF AN AIR-CONDITIONER, IN WHICH AN AIR FLOW AMOUNT CAN BE INCREASED WHILE SUPPRESSING THE GENERATION OF AN ABNORMAL SOUND. THIS CONSTRUCTION CAN BE ACHIEVED BY VARYING A CHORD LENGTH OF BLADES PROVIDED BETWEEN DISKS OF AN IMPELLER OF THE CROSS-FLOW FAN. IN THE PRESENT INVENTION, THE PRODUCTION OF A BLADE SOUND, WHICH IS AURALLY OFFENSIVE, CAN BE PREVENTED, AND A HIGH AIR FLOW DESIGN CAN BE ACHIEVED.

2. 发明专利

JPH11304302A AIR CONDITIONER 失效
公开(公告)号：JPH11304302A
公开(公告)日：1999-11-05
申请号：JP10733098
申请日：1998-04-17
申请人： HITACHI LTD
发明人： IMOTO TSUTOMU , FUJIBAYASHI ICHIRO , IIZUKA YOSHINORI
IPC分类号： F25B43/00
摘要： PROBLEM TO BE SOLVED: To remove the moisture without fail, and raise the serviceability by attaching a circuit where a drier charged with a desiccant and a refrigerant flow controller are connected in series, in parallel with the cycle body. SOLUTION: At cooling operation, the discharge gas coming out of a compressor 1 is let in an outdoor heat exchanger 3 through a four-way valve 2, and is condensed for liquefaction. The liquefied refrigerant is depressurized with an expansion valve 4, and is made a two-phase refrigerant of liquid-gas so as to increase the flow velocity. Here, a refrigerant flow controller 5 and a drier 6 charged with a desiccant are installed in parallel with the cycle body, and the refrigerant in high in flow velocity is let in the drier 6 after giving it resistance with the refrigerant flow controller 5. Then, the refrigerant is let in an indoor heat exchanger 7 for evaporation, and is returned to the compressor 1 through an accumulator 8. Hereby, the secure moisture removal can be made.

3. 发明专利

JPH0942706A AIR CONDITIONER 失效
公开(公告)号：JPH0942706A
公开(公告)日：1997-02-14
申请号：JP19728395
申请日：1995-08-02
申请人： HITACHI LTD
发明人： NAKAMURA HIROO , TAKADA YOSHIHIRO , MORIMOTO MOTOO , YASUNAGA YASUHISA , KANEKO TOMOMICHI , YOKOYAMA HIDENORI , KOSOTO SOICHI , IMOTO TSUTOMU
IPC分类号： F24F1/00 , F24F3/153
摘要： PROBLEM TO BE SOLVED: To achieve the dehumidifying operation while satisfying the fundamental performance of a cooling or heating operation by thermally splitting an indoor heat exchanger to the part from the front upper step part to the back surface and the front lower step part, providing a dehumidification control valve therebetween, and feeding refrigerant to the front lower step part via the valve. SOLUTION: An indoor heat exchanger 1 is thermally split to a front lower step part 2 and a part from a front upper step part 3 to a back surface part 4. The parts 3 and 4 are connected to a dehumidification control valve 5 via a connecting tube 6, and the other connecting port of the valve 5 is connected to the part 2 via a connecting tube 7. The valve 5 is subjected to a throttling expansion action to become low pressure and low temperature refrigerant, which is fed to the part 2. As a result, the part from the part 3 to the part 4 of the exchanger 1 becomes a heater and the part 2 becomes a cooler to be able to heat the indoor air and to simultaneously regulate the cooling and dehumidify temperatures.

4. 发明专利

JP2002181369A AIR CONDITIONER 审中-公开
公开(公告)号：JP2002181369A
公开(公告)日：2002-06-26
申请号：JP2001324325
申请日：2001-10-23
申请人： HITACHI LTD
发明人： NAKAMURA HIROO , TAKADA YOSHIHIRO , MORIMOTO MOTOO , YASUNAGA YASUHISA , KANEKO TOMOMICHI , YOKOYAMA HIDENORI , KOSOTO SOICHI , IMOTO TSUTOMU
IPC分类号： F24F11/02 , F25B1/00 , F25B29/00
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner, capable of varying dehumidification amount and supply air temperature. SOLUTION: The air condition comprises a first indoor heat exchanger forming a heater during dehumidification operation and a plurality of refrigerant flow passages, a second indoor heater exchanger forming a cooler, during dehumidification operation and having a plurality of refrigerant flow passages, and a compressor. During the dehumidification operation, a refrigerant compressed by the compressor is inputted from the first heat exchanger to the second indoor heat exchanger, and by controlling capacity of the compressor and an air flow of an outdoor fan, the heated amount or the dehumidified amount of the indoor heat exchanger is changed.

5. 发明专利

JP2000146369A AIR CONDITIONER 失效
公开(公告)号：JP2000146369A
公开(公告)日：2000-05-26
申请号：JP31640898
申请日：1998-11-06
申请人： HITACHI LTD
发明人： FUJIBAYASHI ICHIRO , IMOTO TSUTOMU
IPC分类号： F25B1/00 , F25B43/02
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner in which residual mineral oil in the existing piping for HCFC based refrigerant can be removed when it is reused and deterioration of performance due to intrusion of the residual mineral oil into the refrigeration or standing of oil on the inner surface of a heat exchanger can be prevented. SOLUTION: An oil separator 6 is provided at the joint of piping 9, 10 between a pressure reducing valve 4 and an indoor unit 8 such that first piping 13 and second piping 14 are inserted into a container from the bottom face thereof. The first piping 13 has one end coupled with the outdoor heat exchanger 3 side and the other end opening into the container whereas the second piping 14 has one end coupled with the indoor heat exchanger 8 side and the other end opening into a container 6. The first piping 13 has open end higher than the open end of the second piping 14 and a barrier wall is provided between both open ends. A gap is provided between the inner wall face at the ceiling of the container and the bottom face side such that a mixture of refrigerating machine oil flows mutually and an oil separator can be fixed and removed freely.

6. 发明专利

JPH09100795A AIR CONDITIONER 失效
公开(公告)号：JPH09100795A
公开(公告)日：1997-04-15
申请号：JP20446996
申请日：1996-08-02
申请人： HITACHI LTD
发明人： TAKADA YOSHIHIRO , NAKAMURA HIROO , MATSUO KAZUYA , FUNAKOSHI SAHO , KANEKO TOMOMICHI , YOKOYAMA HIDENORI , KOSOTO SOICHI , MORIMOTO MOTOO , YASUNAGA YASUHISA , IMOTO TSUTOMU , KAWABE SHUNICHI
IPC分类号： F04D17/04 , F04D29/30 , F04D29/66
摘要： PROBLEM TO BE SOLVED: To restrain generation of abnormal sound and to increase air capacity by dividing a cross-flow fan into a plural number of blocks partitioned by a disc and making structure different in a blade outside diameter at an adjoining part adjoining to at least one block in an air conditioner provided with a cross- flow fan as a blower of an indoor machine. SOLUTION: An impeller 10 is divided into a plural number of blocks partitioned by discs 7 and each of blades 6 arranged in the circumferential direction is formed for each block unit between the discs so that chord length of a blade outside diameter varies on a cross-flow fan used as a blower of an indoor machine. When the blade outside diameter of a fan block is changed in this way, as each of the blades has a forward blade shape to oscillate a recessed part in the fan rotating direction, a blade rear edge is inclined against a rotational axis. Consequently, it is inclined to a nose and a pipe of a heat exchanger, a blade rear edge does not simultaneously pass these wake, a spectrum of sound is dispersed, and generation of abnormal sound can be restrained.

7. 发明专利

JP2007085356A Air conditioner 有权
标题翻译：冷气机
公开(公告)号：JP2007085356A
公开(公告)日：2007-04-05
申请号：JP2006339384
申请日：2006-12-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKADA YOSHIHIRO , NAKAMURA HIROO , MATSUO KAZUYA , FUNAKOSHI SAHO , KANEKO TOMOMICHI , YOKOYAMA HIDENORI , KOSOTO SOICHI , MORIMOTO MOTOO , YASUNAGA YASUHISA , IMOTO TSUTOMU , KAWABE SHUNICHI
IPC分类号： F04D17/04 , F24F1/00 , F24F13/20
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner that suppresses generation of abnormal sounds, while increasing the air volume of a cross flow fan for an indoor unit of the air conditioner. SOLUTION: Suppressing the generation of abnormal sounds can be achieved by changing chord lengths of blades 6 arranged between disks 7 of an impeller 10 of the cross flow fan. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种抑制异常声音的产生的空调，同时增加空调的室内单元的横流风扇的风量。解决方案：通过改变布置在横流风扇的叶轮10的盘7之间的叶片6的弦长可以实现抑制异常声音的产生。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JPH1144432A AIR CONDITIONER 失效
公开(公告)号：JPH1144432A
公开(公告)日：1999-02-16
申请号：JP19804097
申请日：1997-07-24
申请人： HITACHI LTD
发明人： TAKADA YOSHIHIRO , NAKAMURA HIROO , ENDO KAZUHIRO , OTSUKA ATSUSHI , IMOTO TSUTOMU , NOTOYA YOSHIAKI , YOKOYAMA HIDENORI
IPC分类号： F04D29/32 , F24F1/00 , G10K11/16
摘要： PROBLEM TO BE SOLVED: To reduce the noise level, and to save the energy by substantially positioning the maximum value of the blade chord length and the blade chord angle of a propeller fan on an outer circumferential part of the fan and an inner circumferential part of the fan, and the minimum value of the radius of curvature of the blade section in the inner circumferential part of the fan, and retracting the projection of a part in the vicinity of the outer circumference of the fan toward the negative pressure surface side. SOLUTION: In a propeller fan to be used for an outdoor unit of a room air conditioner, a plurality of blades 2 are arranged on a boss 1, and its face side of the blades 2 becomes a positive pressure surface 5, and its back side becomes a negative pressure surface 6 when the blade is turned to the right. The maximum value of the blade chord length of the propeller fan is located on an outer circumferential part of the fan, the maximum value of the blade chord angle is located on an inner circumferential part of the fan, and the minimum value of the radius of curvature of the blade section is located on the inner circumferential part of the fan. A projecting part 7 in which a part in the vicinity of its outer circumference is projected toward a positive pressure surface 5 side, and retracted toward the negative pressure surface 6 side at the end of its outer circumference, is provided. The leaked flow from the positive pressure surface 5 to the negative pressure surface 6 is first increased in speed at a projection starting part, the fluctuating flow element contained in the main flow is reduced, and factors of generating the noise are reduced.

9. 发明专利

JPH10160288A REFRIGERANT DISTRIBUTOR 失效
公开(公告)号：JPH10160288A
公开(公告)日：1998-06-19
申请号：JP31331696
申请日：1996-11-25
申请人： HITACHI LTD
发明人： IMOTO TSUTOMU , YOKOYAMA HIDENORI , MORIMOTO MOTOO , HONOKI HIDEYUKI
IPC分类号： F25B41/00
摘要： PROBLEM TO BE SOLVED: To enable an accurate dividing of a plurality of refrigerant passages into a multiplicity of refrigerant passages with a heat exchanger which works as an evaporator of an air conditioner while preventing the occurrence of a large flow resistance at the time of combining the refrigerant flows, by a method wherein a refrigerant distributor is provided with a plurality of refrigerant inlets and outlets and they are combined into one refrigerant passage within a distributor. SOLUTION: In the case that a heat exchanger which is incorporated in a distributor is worked as an evaporator, the distributor has a refrigerant inlet 1 and a refrigerant outlet 2 and divides two refrigerant passages into four refrigerant passages. For example, two refrigerant passages are combined into one refrigerant passage and enters a body 3 of the distributor and four refrigerant passages exit from the body 3. The number of refrigerant passages at the inlet 1 and the outlet 2 may be arbitrary. Furthermore, the refrigerant passages may be produced by adhering two plates which are formed in a desired shape by a press for example, wherein a plurality of refrigerant passages are combined into one refrigerant passage and this passage is communicated with outlet-side refrigerant passages. Due to such a construction, as the refrigerant passages go downwardly, the refrigerant passages are increased in number so that an amount of refrigerant which passes through each refrigerant passage can be reduced thus restricting the pressure loss at a low level.

10. 发明专利

JP2002081803A AIR CONDITIONER 失效
公开(公告)号：JP2002081803A
公开(公告)日：2002-03-22
申请号：JP2000278662
申请日：2000-09-08
申请人： HITACHI LTD
发明人： FUJIBAYASHI ICHIRO , IMOTO TSUTOMU , INAGAKI NOBUO , TAKAKU SHOJI , NAKAMURA HIROO
IPC分类号： F25B1/00 , F25B43/00
摘要： PROBLEM TO BE SOLVED: To provide a gas liquid separator being excellent in gas liquid separation performance in the case a gas injection cycle is formed. SOLUTION: In a small air conditioner for a domestic use etc, the diameter of the cylinder body of the gas liquid separation cylinder is set to 40-55 mm and a ratio between the inner cross section of a refrigerant chamber and the inner cross section of a refrigerant pipe is set to 12-20. This constitution enables improvement of separation performance of the gas liquid separator and improvement of COP (capacity/input) of the air conditioner.

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