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1. 发明专利

JPH08313026A ROTARY TOTAL HEAT EXCHANGER 失效
公开(公告)号：JPH08313026A
公开(公告)日：1996-11-29
申请号：JP11949795
申请日：1995-05-18
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： SHIOSAKA YASUNAO , TOGUSA KENJI , INUI TAKAYUKI
IPC分类号： F24F7/08
摘要： PURPOSE: To perform a comfortable air conditioning operation and improve a reliability in operation by a method wherein the number of rotation of a total heat exchanger is changed and an indoor supply air temperature is controlled. CONSTITUTION: A total heat exchanging rotor 1 is operated such that a rotor driving motor 2 is driven and rotated under an instruction from a control base board 5. The control base board 5 is made such that an outdoor temperature and an indoor temperature can be acknowledged. Since a temperature of air blown from the indoor air feeding port is determined in its one kind of value in response to an indoor air temperature, an outdoor air temperature and a total heat exchanging efficiency of the total heat exchanging rotor 1, a rotation of the total heat exchanging rotor 1 is controlled to cause a temperature exchanging efficiency to be varied and a supply temperature of air from the indoor air supplying port can be controlled. An indoor air temperature, an outdoor air temperature and a temperature exchanging efficiency for every number of rotation of the total heat exchanging rotor 1 are inputted to the control base board 5 in advance, thereby it is possible to blow air at a temperature set by a temperature setting remote controller 13 from the indoor air feeding port.

2. 发明专利

JPH0914790A MULTI-CHAMBER AIR CONDITIONER 失效
公开(公告)号：JPH0914790A
公开(公告)日：1997-01-17
申请号：JP16074595
申请日：1995-06-27
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： NAKAYAMA SUSUMU , HOJO TOSHIYUKI , TOGUSA KENJI , CHIAKI TAKAO , SHIOSAKA YASUNAO
IPC分类号： F24F11/02 , F25B13/00 , F25B29/00
摘要： PURPOSE: To reduce the switching frequency by functioning an outdoor heat exchanger as an evaporator or a condenser when the difference between the total of an indoor heating loads and the value of the total of indoor cooling loads is more than the minimum heat absorbing amount or larger than the minimum radiating amount. CONSTITUTION: The total amount of indoor heating loads and the total amount of indoor cooling loads are detected. When the difference of both the totals of both the loads is larger than the minimum heat absorbing amount, outdoor heat exchangers 11a, 11b are functioned as evaporators, and a heating is mainly operated. When the difference between the total amount of indoor cooling loads and the value of the total amount of the indoor heating loads is larger than the minimum radiating amount, outdoor heat exchangers 11a, 11b are functioned as condensers, and a cooling is mainly operated. Thus, the switching frequency can be reduced, and the switching operations of the exchangers 11a, 11b can be smoothly conducted.

3. 发明专利

JPH05231705A CONTROL METHOD OF AIR QUANTITY AND CONTROL METHOD OF AIR QUANTITY AT ROOM TEMPERATURE 失效
公开(公告)号：JPH05231705A
公开(公告)日：1993-09-07
申请号：JP3038592
申请日：1992-02-18
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： YAMADA SHINICHIRO , DOBASHI KAZUHIRO , TOGUSA KENJI , MAEDA KENSAKU , SHIOSAKA YASUNAO
IPC分类号： F24F11/76
摘要： PURPOSE:To operate an air conditioning system economically while ensuring the state of comfortable minimum ventilation at the time of air conditioning. CONSTITUTION:A damper opening is controlled proportionally when an indoor temperature T is kept between a damper proportional minimum-opening indication temperature TO and a damper proportional-control starting temperature TM and the damper opening is fixed in a proportional minimum opening when T is kept between TO and a blast-operation start set temperature TF at the time of cooling operation. On the other hand, only blast operation is conducted under the state, in which the damper opening is fixed in the proportional minimum opening, during a time when T is returned to TO after the temperature of suction air reaches TF through a set indoor temperature TS.

4. 发明专利

JPH07280294A TERMINAL STAGE FOR AIR CONDITIONER 失效
公开(公告)号：JPH07280294A
公开(公告)日：1995-10-27
申请号：JP6922794
申请日：1994-04-07
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： SASAKI TOSHIHARU , KOBAYASHI ATSUYASU , FUKAZAWA TOSHINORI , KOSUGI SHINICHI , ITO MASAHIRO , YAMADA SHINICHIRO , SHIOSAKA YASUNAO , MAEDA KENSAKU
IPC分类号： F24F13/20 , H01R9/22 , H01R11/01 , F24F1/00
摘要： PURPOSE:To obtain a terminal stage by making a wiring common to indoor machines of an air conditioner for a store and an air conditioner for a building which are different in the number of terminals. CONSTITUTION:A plurality of terminal stages of unit blocks each prepared by a method wherein a short-circuit plate 2 bent in the shape of a crank is buried and molded in a case 1 having an electrically insulating property are disposed in juxtaposition and assembled. In each block for power supply, a plurality of parts of terminal fitting screws 3 are formed in the short-circuit plate 2 on both of input and output sides. Moreover, these screws 3 in a plurality are disposed aslant on the input side. Even in an on-the-spot operation, according to this constitution, it is unnecessary to change a terminal board for each of uses for a store and a building, indoor machines of air conditioners can be made common to the uses and lessening of operating processes and reduction of the cost are enabled.

5. 发明专利

JPH09159254A OPERATION CONTROL FOR AIR CONDITIONER 失效
公开(公告)号：JPH09159254A
公开(公告)日：1997-06-20
申请号：JP31771795
申请日：1995-12-06
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： SHIOSAKA YASUNAO , TAKENAKA HIROSHI , TOGUSA KENJI
IPC分类号： F24F7/08 , F24F11/02
摘要： PROBLEM TO BE SOLVED: To enhance the reliability while incorporating the comfortableness and economy by providing a thermistor for detecting outdoor and indoor air temperatures and a driving motor for operating or stopping entire heat exchanging rotors. SOLUTION: An entire heat exchange rotors 1 is rotated by driving it by a rotor driving motor 2 according to the command from a control case 5. A compressor 13 for constituting a refrigerating cycle together with a direct expansion coil 12 is also operated or stopped according to a command from the case 5. The case 5 can recognizes the outdoor and indoor air temperatures by outdoor and indoor temperature thermistors 3, 4. Since the air temperature introduced to the coil 12 is decided by the indoor circulating temperature, outdoor suction temperature and the temperature exchange efficiency of the rotor 1, and hence it can be calculated by the case 5. Accordingly, it can judge from the outdoor and indoor air temperatures whether the heating or cooling of the coil 12 by the operation of the compressor 13 is needed or not or whether the heat recovery of the rotor 1 is needed or not to obtain the comfortable indoor diffusing air temperature.

6. 发明专利

JPH08193745A METHOD FOR CONTROLLING AIR CONDITIONER 失效
公开(公告)号：JPH08193745A
公开(公告)日：1996-07-30
申请号：JP472195
申请日：1995-01-17
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： IWASAKI TSUTOMU , SATO TAKAHARU , WATANABE MASASHI , SHIOSAKA YASUNAO
IPC分类号： F24F11/02 , F24F13/22 , F25B1/00 , F24F1/00
摘要： PURPOSE: To enable an efficient draining operation to be carried out by a method wherein dew is prevented from being produced from a heat exchanger when a drain pan is full of water and water in the drain pan is discharged for a specified period of time after the level of the water in the drain pan returns to its normal water level. CONSTITUTION: When a compressor 1 is turned on, a drain pump 11 is also turned on. When a float switch 10 is operated, the compressor 1 is turned off. Since the float switch 10 returns to its original state after its continuous operation of 119 seconds or so and the drain pump 11 has a freezing temperature of 0 deg.C when the compressor 1 is turned off, it is turned off after 200 seconds after the float switch returns to its original position. In this way, when the float switch 10 for use in detecting filled full water in the drain pan 9 is operated, if the compressor 1 is still being turned off, the compressor 1 is prevented from being turned off to generate fog from a heat exchanger 6. Then, the drain pump 11 is turned on to perform a drain discharging. In the case that frosting occurs also at 200 seconds after returning to the original state of the float switch 10, the drain pump 11 is not turned off to continue the drain discharging by the time in which the frosting is completely melted.

7. 发明专利

JPH05332605A AIR CONDITIONER 失效
公开(公告)号：JPH05332605A
公开(公告)日：1993-12-14
申请号：JP13839192
申请日：1992-05-29
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： MAEDA KENSAKU , TOGUSA KENJI , YAMADA SHINICHIRO , SHIOSAKA YASUNAO
IPC分类号： F24F13/14
摘要： PURPOSE:To improve comfortableness by eliminating a feeling of cold blast caused by air supplied to an indoor side at the start-up of heating operation. CONSTITUTION:An outdoor machine 5 comprising a compressor 6, a heat exchanger 7 on a non-use side and an outboard expansion valve 8 is connected through cooling medium pipes 13 and 14 to an indoor machine 1 comprising a heat exchanger 3 on a use side, an inboard expansion valve 2 and a fan 4, and a damper 11 on an outlet side is provided at an air outlet of the indoor machine 1. An air passage and a damper 12 on a suction side are provided to extent from between the indoor machine 1 and the outlet side damper 11, and a control 10 is provided to enable controlling both the dampers.

8. 发明专利

JPH04364697A REMOTE CONTROL SWITCH 失效
公开(公告)号：JPH04364697A
公开(公告)日：1992-12-17
申请号：JP13997091
申请日：1991-06-12
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： SHIOSAKA YASUNAO , NAGAI MAKOTO , SANO TOMOYA , ODA MASARU
IPC分类号： F24F11/02 , F24F13/20 , H04Q9/00
摘要： PURPOSE:To improve the operability of the remote control switch getting larger in size attended with multi-function and sophisticated function. CONSTITUTION:A recessed part is provided to a bottom face of a bottom case 3 to offer a stable grip in the operation. In the case of the wall mount specification, the recessed part is fitted to a wall mount component and the switch is fitted to the component without changing an external appearance. A thrust structure is adopted for a cover 2 and the cover is opened/closed along a circular-arc shape around a joint of a thumb. Thus, the large sized remote control switch is operated stably and external appearance is not lost even in the wall mount state. The cover is opened/closed smoothly to offer natural opening/closing.

9. 发明专利

JP2006349258A AIR CONDITIONER 审中-公开
公开(公告)号：JP2006349258A
公开(公告)日：2006-12-28
申请号：JP2005175854
申请日：2005-06-16
申请人： HITACHI LTD
发明人： SHIOSAKA YASUNAO , TAKENAKA HIROSHI , OKABE MASAYUKI
IPC分类号： F25B1/00 , F24F11/02 , F25B41/04 , F25B49/02
摘要： PROBLEM TO BE SOLVED: To increase the operating range of a heating operation when an HFC-type refrigerant is used by securing abilities while suppressing high pressure from rising during the heating operation, especially during an intermediate period when either outdoor temperature or indoor temperature is high. SOLUTION: In the air conditioner, a compressor 3, a four-way valve 13, an outdoor heat exchanger 4, an outdoor expansion valve 9 and a receiver 18 are sequentially connected to one another by piping, and an outdoor unit 1 having an outdoor fan 8 and an indoor unit 2 having an indoor heat exchanger 12, an indoor expansion valve 17 and an indoor fan 16 are connected to each other by indoor-to-outdoor connection gas piping 10 and indoor-to-outdoor connection liquid piping 11 to constitute a refrigerating cycle. The air conditioner has a sensor 6 for detecting high-pressure side pressure within the refrigerating cycle and a bypass valve 5 provided in the piping bypassing from the discharge side piping of the compressor 3 to a space between the outdoor heat exchanger 4 and the outdoor expansion valve 9. When the high-pressure side pressure is equal to or greater than a set value during the heating operation, the bypass valve 5 opens. COPYRIGHT: (C)2007,JPO&INPIT

10. 发明专利

JP2002039647A GAS-LIQUID SEPARATOR 失效
公开(公告)号：JP2002039647A
公开(公告)日：2002-02-06
申请号：JP2000226198
申请日：2000-07-21
申请人： HITACHI LTD
发明人： NAITO KOJI , NAKAYAMA SUSUMU , YOKOZEKI ATSUHIKO , SHIOSAKA YASUNAO
IPC分类号： F25B43/02 , B01D45/12
摘要： PROBLEM TO BE SOLVED: To enhance the oil separation efficiency by enhancing the processability in attaching an inflow pipe to a gas-liquid separator. SOLUTION: A gas-liquid separator for gas-liquid mixed fluid, which has an inflow pipe 13 and an outflow pipe 14 in a container 10, is equipped with the above inflow pipe 13 which is inserted roughly vertically to the container and whose end within the container is closed and which is provided, at its flank, with an outflow port 17.

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