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71. 发明专利

JPS60262A REFRIGERATION CYCLE 失效
公开(公告)号：JPS60262A
公开(公告)日：1985-01-05
申请号：JP10765583
申请日：1983-06-17
申请人： HITACHI LTD
发明人： ATSUMI AKIRA , KOKUNI KENSAKU , CHIAKI TAKAO , YOSHIOKA KAZUO , TERADA HIROKIYO
IPC分类号： F25B1/00 , F25B41/00

72. 发明专利

JPH08145489A REFRIGERATOR AND OPERATING METHOD THEREFOR 失效
公开(公告)号：JPH08145489A
公开(公告)日：1996-06-07
申请号：JP29092694
申请日：1994-11-25
申请人： HITACHI LTD
发明人： ENDO TAKESHI , TERADA HIROKIYO , KATSUMATA NAOTO , KOKUNI KENSAKU , URATA KAZUMIKI , MURAMATSU MASATOSHI , ENDO MICHIKO
IPC分类号： F25B1/00 , F25B9/00 , F25B13/00
摘要： PURPOSE: To variably set the capacity of a refrigerating cycle by altering the composition of the circulating refrigerant of a refrigerator using a non-azeotrope refrigerant without using a complicated unit or controlling method. CONSTITUTION: An accumulator 2, a refrigerant compressor 1, a four-way valve 3, an outdoor unit heat exchanger 4, an outdoor unit expansion unit 6, a receiver 7, an indoor unit expansion unit 8, and an indoor unit heat exchanger 9 are sequentially connected by a tube to form a refrigerating cycle. Excess refrigerant is normally stored in the receiver 7. When the necessity of raising the ratio of low boiling point refrigerant composition occurs, in the case of cooling, the unit 6 is throttled, in the case of heating, the unit 8 is throttled, thereby reducing the refrigerant flow rate. Thus, the excess refrigerant in the receiver 7 is moved to the accumulator 2.

73. 发明专利

JPH0727395A AIR CONDITIONING SYSTEM 失效
公开(公告)号：JPH0727395A
公开(公告)日：1995-01-27
申请号：JP16998193
申请日：1993-07-09
申请人： HITACHI LTD
发明人： TAKENAKA HIROSHI , TERADA HIROKIYO , IZUSHI MINETOSHI , TOGUSA KENJI , KOKUNI KENSAKU
IPC分类号： F24F11/02 , F25B13/00
摘要： PURPOSE:To provide an air-conditioner capable of controlling an air current flowing from each of indoor units independently of the indoor units according to instructions from an outdoor unit or from an air conditioning management system when a plurality of indoor units are set in one room, in a multitype air-conditioner, in which a plurality of indoor units are connected to one outdoor unit, and in an air conditioning system. CONSTITUTION:A plurality of indoor units 2 are connected to one outdoor unit 1 through a refrigerant pipeline 8, and transmission lines 7 are arranged between each of the indoor units 2 and a remote control switch 4, between the outdoor unit 1 and each of the indoor units 2, and between the outdoor unit 1 and an air conditioning management system 3. According to these arrangements, in the case where a plurality of air-conditioners are set in a room which requires a wide space, air currents for temperature distribution in the whole room can be automatically controlled, and the comfortable air- conditioned space can be obtained.

74. 发明专利

JPH06207741A AIR CONDITIONER 失效
公开(公告)号：JPH06207741A
公开(公告)日：1994-07-26
申请号：JP257093
申请日：1993-01-11
申请人： HITACHI LTD
发明人： TAKENAKA HIROSHI , TERADA HIROKIYO , IZUSHI MINETOSHI , KOKUNI KENSAKU , NAGAI MAKOTO , SASAKI TOSHIHARU , SAKUMA KOJI , TOGUSA KENJI
IPC分类号： F24F11/02 , F24F3/06 , F24F11/00 , F25B13/00 , F25B41/04 , F25B41/06 , F25B49/02
摘要： PURPOSE:To provide a pair type air conditioner including an indoor unit capable of being commonly used as a multi-type indoor machine. CONSTITUTION:An air conditioner comprises an outdoor unit 1 including a compressor 2 and an outdoor heat exchanger 4, and a pilot unit 8 including an electronic expansion valve 10 and a pilot converter 9. In a cooling operation for example, a refrigerant circuit is formed such that a refrigerant discharged from the compressor 2 is condensed by the outdoor heat exchanger 4 and is expanded through the electronic exapnsion valve 10, and is further evaporated through the indoor heat exchanger 9 to return to the compressor 2. In such a manner, the electronic expansion valve 10 is assembled in the indoor unit 8, and control means 11 for the electronic expansion valve 10 is provided in the indoor unit 8. Accordingly, an indoor side control device 12 is not required to possess an evaluation function of an opening signal for the electronic expansion valve 10 and instead only the outdoor side control device 11 is adapted to possess the evaluation function, so that the indoor machine is commonly useable as air conditioners of a pair type and a multi type.

75. 发明专利

JPH06102885A ACTIVE SILENCER IN THREE DIMENSIONAL SPACE 失效
公开(公告)号：JPH06102885A
公开(公告)日：1994-04-15
申请号：JP25094292
申请日：1992-09-21
申请人： HITACHI LTD
发明人： OKABE SHINYA , SHIMOIDE SHINICHI , TERADA HIROKIYO , IZUSHI MINETOSHI , TAKENAKA HIROSHI , ITO MASAHIRO
IPC分类号： F01N1/00 , F24F13/02 , G10K11/16 , G10K11/178
摘要： PURPOSE:To provide an active silencer which enable selecting an arbitrary position within three dimensional space for a local silent region desired to be silent and also enable selecting arbitrarily the number and size of silent regions. CONSTITUTION:Detected sounds from detecting means 1a, 1b for noise generated by a noise source (air conditioner 5) and silent effect detecting means 3a, 3b are analyzed by a controller 4 for active silence, sound for active silence being an opposite phase to noise and having the same sound pressure and wavelength as noise at a setting position of the silent effect detecting means is issued, then active silence is performed within a local silence region around the silent effect detecting means. The silent effect detecting means, a position and the number of a sounding means are made variable by making signal transmission lines 7a and 7c between each apparatus flexible and movable wire or wireless.

76. 发明专利

JPH03137464A MULTI-TYPE AIR CONDITIONER 失效
公开(公告)号：JPH03137464A
公开(公告)日：1991-06-12
申请号：JP27302689
申请日：1989-10-20
申请人： HITACHI LTD
发明人： ASAI SETSUO , TERADA HIROKIYO , KITANI FUMIHIKO , KOKUNI KENSAKU , YASUDA HIROSHI
IPC分类号： F25B29/00
摘要： PURPOSE:To perform an automatic control of a temperature of each of the rooms to a desired set temperature by providing an operation/control means whereby a ratio of a correcting amount of a degree of opening of each of parallel-arranged expansion valves is coincided with a ratio of a required capability corresponding value of the device belonging to each of the expansion valves and control is performed in such a way as a difference in over-heating may be eliminated. CONSTITUTION:A freezing cycle is carried out by arranging a compressor 1 of a variable volume, an outdoor heat exchanger 3 and indoor heat exchangers 7a to 7e of a plurality of indoor devices. A discharging pipe of the compressor 1 is provided with a temperature sensor 11 for use in sensing both temperature and pressure of discharged gas refrigerant. A super-heat of the discharged gas refrigerant of the compressor is calculated by a micro-computer. Each of the indoor devices of each of the indoor heat exchangers 7a to 7e is provided with a temperature sensor for use in sensing each of absorbed air temperatures as each of the room temperatures. The sensed signals are inputted to the micro-computer. Both cooling and heating can be carried out irrespective of the fact that a respective or a concurrent cooling or heating is performed for a plurality of rooms. Each of indoor air in each of the rooms is controlled to a set temperature and further a degree of over-heating of discharged or sucked gas refrigerant in the compressor is controlled to a suitable set value and then an operating condition of the freezing cycle is kept at its most-suitable condition.

77. 发明专利

JPH0375459A MULTIPLE AIR CONDITIONER 失效
公开(公告)号：JPH0375459A
公开(公告)日：1991-03-29
申请号：JP21193789
申请日：1989-08-17
申请人： HITACHI LTD
发明人： NAKAYAMA SUSUMU , KOKUNI KENSAKU , YASUDA HIROSHI , NAMIKATA RUMI , URATA KAZUMIKI , MURAMATSU MASATOSHI , TOGUSA KENJI , CHIAKI TAKAO , TERADA HIROKIYO , KITANI FUMIHIKO
IPC分类号： F25B13/00
摘要： PURPOSE:To make a multiple air conditioner having an outdoor unit with a wide applicability available whereby the capacity of the outdoor heat exchanger can be accommodated to the capacity of indoor units by providing a plurality of outdoor heat exchangers each with an opening-adjustable outdoor expansion valve in a setup to adjust the number of outdoor heat exchangers in use to the number of indoor units in operation. CONSTITUTION:When, in a setup with two outdoor heat exchangers 11a, 11b, all the indoor units are put in operation, both the two outdoor heat exchangers are put to use with two outdoor heat exchangers are put to use with two outdoor expansion valves 21a, 21b opened. When some of the indoor units, denoted, for example, by 2, 3 and 4, are put in operation while the other are held at rest, only one of the outdoor heat exchangers is put to use with one outdoor expansion valve opened and the other outdoor expansion valve closed. Likewise, to a change in the capacity of the indoor units put into connection, the capacity of the outdoor heat exchanger can be adjusted by closing an outdoor expansion valve. This constitution dispenses with the need to change the outdoor unit according to the number or the capacity of the indoor unite put into connection and widens the applicability of an outdoor unit.

78. 发明专利

JPH02196194A VIBRATION ISOLATOR INCORPORATING TYPE RESIN FORMED FAN 失效
公开(公告)号：JPH02196194A
公开(公告)日：1990-08-02
申请号：JP1202589
申请日：1989-01-23
申请人： HITACHI LTD
发明人： NAGAI MAKOTO , TERADA HIROKIYO , HANADA MASAMICHI , KAWAMURA FUTOSHI , MORI YUTAKA , YASUKAWA TATSUJI
IPC分类号： F04D29/32 , F04D29/34
摘要： PURPOSE:To make it possible to prevent the lowering of proof stress of resin material caused by temperature increase of a boss part and the electromagnetic oscillation sound and vibration caused by an electric motor by providing, between a fan body and a boss part, an intermediate member for changing its rubber thickness on the basis of torsional stress generated at the time of drive and stop, and providing, in the boss part, a rotation drive transmitting member. CONSTITUTION:The thickness of a rubber membrane 7' is made maximum at its root parts 6e' for forming steps between both side faces of the large diameter part 6a' of a center boss 6' and outer circumferential faces of two small diameter parts 6b' and said thickness is continuously reduced as the part proceeds toward upper ends and lower ends of both outer peripheries of the large diameter parts 6a' and small diameter parts 6b' respectively. Accordingly, a vibration prevention effect and relaxation of torsional stress at the time of rotation drive and stop are carried out by the center boss 6' while hardness of the rubber membrane 7' is formed so as to relax residual stress in a boss part 2 after resin formation simultaneously and the minimum thickness of the rubber membrane 7' is so set as obtaining the vibration prevention effect of a set frequency. Accordingly, since the rubber thickness of the root part 6e' for forming steps at the center boss 6' subjected to a large change in a stress value applied to the membrane 7' is increased, the thickness of the whole rubber membrane 7' can be reduced.

79. 发明专利

JPH02130329A STRUCTURE OF AIR CONDITIONER UNIT 失效
公开(公告)号：JPH02130329A
公开(公告)日：1990-05-18
申请号：JP28364688
申请日：1988-11-11
申请人： HITACHI LTD
发明人： KURODA SHIGEAKI , KOKUNI KENSAKU , CHIAKI TAKAO , TERADA HIROKIYO , NAGAI MAKOTO
IPC分类号： F24F1/00
摘要： PURPOSE:To enable conformation between a unit and the place for its installation by forming the unit in a flat structure and by forming the inlet and outlet for air in the side of the unit. CONSTITUTION:An air conditioner unit 1 has openings permitting air to flow in an out only in one lateral side, in which an air-inlet panel 3, a control panel 2, and an air outlet panel 4 are provided, as shown in the figure. Indoor air enters the unit 1 through the air-inlet panel 3 in the lower part in the direction shown by an arrow 5, and is sent out of the unit 1 through the air-outlet panel 4 in the upper part in the direction shown by an arrow 6. An improvement in the conformance of the air conditioner unit 1 with the space where it is installed results, since this constitution makes it possible to accommodate the installation to the interior or achieve an effect of coordination with wallpaper, or the like, with possible patterns increase for the manner of installation.

80. 发明专利

JPS643463A METHOD OF CONTROLLING ELECTRONIC EXPANSION VALVE 失效
公开(公告)号：JPS643463A
公开(公告)日：1989-01-09
申请号：JP15773487
申请日：1987-06-26
申请人： HITACHI LTD
发明人： ASAI SETSUO , TERADA HIROKIYO , HANADA MASAMICHI , HORIUCHI NORIAKI
IPC分类号： F25B47/02 , F25B1/00 , F25B47/00
摘要： PURPOSE: To optimally control a refrigerating cycle by detecting and comparing temperatures before and after an expansion valve and a temperature of a compressor suction unit by an expansion valve control microcomputer, discriminating between cooling and heating regardless of a unit control microcomputer, and controlling the valve during defrosting so that compressor suction unit superheat of a reverse cycle becomes constant. CONSTITUTION: In a refrigerating cycle, a refrigerant output from a compressor 1 is air-cooled by an outdoor heat exchanger 3 via a four-way valve 2, and pressure- reduced by an expansion valve 4. Temperatures before and after it are measured by thermistors 8, 9. The pressure-reduced refrigerant cools by an indoor heat exchanger 5. The refrigerant is sensed at its temperature by a thermistor 7 immediately before suction to the compressor 1 via a liquid reservoir (b) through the valve 2, and the valve 4 is controlled. A defrosting operation upon heating is controlled by the expansion valve. And, since a maximum limit cycle low pressure is operated at a higher value while a suitable superheated refrigerant gas is ensured to the compressor, a compressor input can be increased. And, its low pressure is controlled to higher, a refrigerant flow rate during defrosting is increased to easily obtain a defrosting heat source, and a defrosting time is shortened.

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