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1. 发明专利

JPH06323563A AIR CONDITIONER 失效
公开(公告)号：JPH06323563A
公开(公告)日：1994-11-25
申请号：JP11559793
申请日：1993-05-18
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： OISHI KENICHI , TOMONO EIJI
IPC分类号： B01F3/02 , B01F5/00 , F24F1/00 , F24F13/10 , F24F13/15
摘要： PURPOSE:To air-condition a room so that the temperature distribution inside the room becomes uniform, by installing an air agitating device at a position in an air passage way after air passes through a heat exchanger and before air is distributed. CONSTITUTION:Air sent by a fan 2 passes through a heat exchanger 3, is agitated by a rotary disc 5a rotating on a rotary axle 5b, distributed by a distributor 6 and blown out from air outlets 7a and 7b. Although air turns to high- temperature air and low temperature air after passing through the heat exchanger 3 as the upper part of the heat exchanger 3 is higher in temperature than the lower part, the air is agitated by the rotary disc 5a and its temperature becomes uniform. The rotary disc 5a is turned on the rotary axle 5b by air flow. As air streams 4a having uniform temperatures are blown out from the air outlets 7a and 7b, air having the same temperature is blown out from the air outlets 7a and 7b. Therefore, the temperature distribution in a room becomes uniform and no uncomfortable place appears in the room, resulting in an economical air-conditioning without requiring capacities more than necessary for an air conditioner.

2. 发明专利

JPH04366347A CONTROL SYSTEM FOR AIR CONDITIONER 失效
公开(公告)号：JPH04366347A
公开(公告)日：1992-12-18
申请号：JP13997591
申请日：1991-06-12
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： OISHI KENICHI , URASHIMA HARUO
IPC分类号： F24F11/02
摘要： PURPOSE:To perform a changing-over in operation from an emergency operation in an air conditioner to its normal operation and in particular, to provide an operation changing-over through a wireless remote controlling operation. CONSTITUTION:A control substrate of an indoor device of an air conditioner is provided with a micro-computer 4 and a micro-computer switch 3. Changing- over of operation is accomplished by controlling of a releasing of an emergency operation with a transmittance by a wireless remote controller 1 and a starting of a normal operation. Accordingly, releasing of the emergency operation and starting of normal operation can be performed through a wireless remote controller.

3. 发明专利

JP2002277022A AIR CONDITIONER 失效
公开(公告)号：JP2002277022A
公开(公告)日：2002-09-25
申请号：JP2001075238
申请日：2001-03-16
申请人： HITACHI LTD
发明人： OBA YOSHINORI , YAMADA SHINICHIRO , HATA YOSHIKI , OISHI KENICHI
IPC分类号： F24F11/02
摘要： PROBLEM TO BE SOLVED: To enhance reliability and safety of an air conditioner by preventing the temperature of a rotational speed controller from rising even if an enormous current happens to flow simultaneously with high outdoor temperature. SOLUTION: The air conditioner comprises a refrigeration cycle constituted by connecting by piping an outdoor unit having a compressor, a four-way valve, an outdoor heat exchanger and an outdoor expansion valve, and an indoor unit having an indoor expansion valve and an indoor heat exchanger with each other. The air conditioner further comprises a blower 2 connected to a power source 9 through the rotational speed controller 1 so as to variably control the rotational speed thereof, a temperature detector 6 for detecting outdoor temperature and a bypass circuit 10 connecting the power source 9 to the blower 2 with bypassing the controller 1. When the outdoor temperature detected by the detector 6 is a first limiting temperature or higher, the connection of the blower 2 is switched from the controller 1 to the bypass circuit 10.

4. 发明专利

JP2002130861A AIR CONDITIONER 失效
公开(公告)号：JP2002130861A
公开(公告)日：2002-05-09
申请号：JP2000326997
申请日：2000-10-20
申请人： HITACHI LTD
发明人： YOSHIDA YASUTAKA , NAKAYAMA SUSUMU , HATA YOSHIKI , OISHI KENICHI , SANO NOBUHIRO
IPC分类号： F24F11/02 , F25B13/00 , F25B29/00
摘要： PROBLEM TO BE SOLVED: To obtain an air conditioner which will not be short in the cooling capacity of an indoor machine due to the working condition of pipeline connection or the like, and which is high in stability while the degree of freedom in designing the same is increased to contrive the improvement of amenity. SOLUTION: The air conditioner is provided with a plurality of indoor machines 191, 19N having indoor heat exchangers 201, 20N and indoor expansion valves 221, 22N, and an outdoor machine 8. A first outdoor heat exchanger 101 and a first outdoor expansion valve 151 are connected to one pipe branched at one of the discharging side of compressors 91, 92, and a second outdoor heat exchanger 102 as well as a second outdoor expansion valve 12 are connected to the other pipe while an outdoor fan 11 for sending air to the first outdoor heat exchanger 101 and the second outdoor heat exchanger 102 while whose number of rotation is variable. In such an air conditioner, a discharging pressure detector 33 for detecting the discharging pressures of the compressors 91, 92 is provided, and, when a discharging pressure is lowered than a predetermined pressure value upon cooling operation and mainly cooling operation, the number of rotation of the outdoor fan 11 is reduced.

5. 发明专利

JPH10148383A AIR CONDITIONER 失效
公开(公告)号：JPH10148383A
公开(公告)日：1998-06-02
申请号：JP30773596
申请日：1996-11-19
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： OISHI KENICHI , MARUYAMA HIROSHI
IPC分类号： F24F1/02 , F24F11/02 , F24F11/76 , F24F11/053
摘要： PROBLEM TO BE SOLVED: To suppress the rapid fluctuation of the room temperature by periodically controlling the opening/closing of a damper provided in an air flow passage of an indoor fan provided so as to introduce the indoor circulated air and the outside air, and mixing a part of the indoor circulated air with the outside air and feeding the mixed air indoors. SOLUTION: In the timing chart when an outside air introduction switch is set from a remotely operating device when the cooling thermostat is turned off, the point (a) indicates the thermostat in the off condition, and a compressor is stopped. Then, the temperature of the supplied air gradually rises. When an outside air introduction switch is set (at the point (b)) from a remotely operating device, a damper is driven forward to set the outside air introduction to be 100%. Then, the temperature of the supplied air rapidly rises, and the indoor temperature also rises thereby. When the temperature of the supplied air is compared with the set value for the indoor temperature, and the difference exceeds the set value for the differential indoor temperature (at the point (c)), the opening/closing of the damper is periodically controlled so that the temperature of the supplied air is brought close to a renewed set value.

6. 发明专利

JPH0875192A OUTDOOR UNIT FOR AIR CONDITIONER 失效
公开(公告)号：JPH0875192A
公开(公告)日：1996-03-19
申请号：JP21556694
申请日：1994-09-09
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： HATA YOSHIKI , URASHIMA HARUO , OISHI KENICHI
IPC分类号： F24F5/00
摘要： PURPOSE: To perform resource conservation of an air conditioner and to prevent the damage of an air conditioner outdoor unit during transporting by a fork lift truck. CONSTITUTION: Reinforcing stays 7 are mounted perpendicularly to the claw inserting direction of a fork lift truck at the depth direction central part at the lower part of the bottom plate 2 of an outdoor unit. In this case, the position of the stay is disposed at the position where the claw of the truck is engaged with the stay even when the fork shorter than the unit depth is used, and not brought into contact with the plate 2. Thus, even when the fork having short claw is used, the bottom plate is not damaged by the claw, the lift up is stabilized. Even when the claw is inserted in the obliquely upward direction, an outdoor unit is scarcely damaged. Since a wood base is omitted, resource conservation is provided.

7. 发明专利

JPH0942745A AIR CONDITIONER WITH ATMOSPHERE COOLING FUNCTION 失效
公开(公告)号：JPH0942745A
公开(公告)日：1997-02-14
申请号：JP18714395
申请日：1995-07-24
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： KIMURA TAKASHI , MARUYAMA HIROSHI , HATA YOSHIKI , NISHIZAWA TOKUHISA , OISHI KENICHI
IPC分类号： F24F11/02 , F24F11/04 , F24F13/14
摘要： PROBLEM TO BE SOLVED: To reduce the torque to be applied to a damper by the technique of controlling the damper in an air conditioner having an atmosphere intake damper control. SOLUTION: The air conditioner with an atmosphere cooling function comprises a circuit for connecting a relay contact (AR7) 2a for operating a damper motor (MD) 1, a relay coil (AR7) 2c of (AR8) 2b, a b contact (AR7) of (AR8) 2d and (AR8) 2f in series with the operating circuit of an indoor blower motor(MEF) 3. Thus, the damper motor torque can be reduced, the capacity of the motor of a damper mechanism can be reduced, and the mechanism can be simplified.

8. 发明专利

JPH08247492A GRILLE MOUNTING AND DEMOUNTING MECHANISM FOR AIR CONDITIONER 失效
公开(公告)号：JPH08247492A
公开(公告)日：1996-09-27
申请号：JP5398195
申请日：1995-03-14
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： OISHI KENICHI , URASHIMA HARUO
IPC分类号： F24F13/20 , F24F1/00
摘要： PURPOSE: To solve a problematical point of the safety standard evaluation of a grille and improve safety thereof by disposing a stopper of controlling the movement of a knob within a movable range of the knob and mounting and demounting the stopper by using a tool only. CONSTITUTION: A stopper 5 for controlling the movement of a knob 4 is disposed within a movable range of the knob 4 to be manually operated. The stopper 5 is made to have a great contact resistance between the stopper 5 itself and a suction grille 3, and it is so designed that the knob 4 is unmovable and the stopper 5 is unremovable with the power of bare hands. A gap Xmm, into which a tool (e.g. coin, driver, etc.) can be inserted, is provided between the stopper 5 and the suction grille 3, and such a tool is inserted into the gap Xmm. A corner of the suction grille 3 is used as a fulcrum, and a tip end of the tool is used as a working point, whereby the stopper 5 can be removed. By this method, a problematical point of the safety standard evaluation of a grille can be solved, and safety is improved.

9. 发明专利

JPH07332696A AIR-CONDITIONER 失效
公开(公告)号：JPH07332696A
公开(公告)日：1995-12-22
申请号：JP12856494
申请日：1994-06-10
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： OISHI KENICHI , URASHIMA HARUO
IPC分类号： F24F11/02 , F24F13/22 , F24F1/00
摘要： PURPOSE:To evade drain pump operation in a state of no drain water at a water receiver, by providing a plurality of float switches for detecting the water level of the drain water. CONSTITUTION:Float switches 6a, 6b, for starting/stopping a drain pump 5 are arranged. At the start of cooling and during cooling, if there is no rising to a pumping-up lowest water level of a drain pump 5, such a control that a float switch 6a detecting drain water produced by a heat exchanger 3 stops a drain pump 5, is executed. After the cooling operation, if there is no lowering to a pumping-up lowest water level of the drain pump 5, such a control that a float switch 6a cannot stop the operation of the drain pump 5 is executed. Hereby, operation within a range of a proper operation of the drain pump becomes possible, a drain water discharge together with air in the vicinity of the pumping-up lowest water level of the pump 5, can be prevented, and abnormal sound generation can be prevented.

10. 发明专利

JPH05141688A AIR CONDITIONER 失效
公开(公告)号：JPH05141688A
公开(公告)日：1993-06-08
申请号：JP30582391
申请日：1991-11-21
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： OISHI KENICHI , URASHIMA HARUO , HATA YOSHIKI
IPC分类号： F24F13/22
摘要： PURPOSE:To prevent scattering of condensed water generated in a heat exchanger out of a water reservoir, a cause of an offensive odor and disturbance of the air in a diffuser. CONSTITUTION:A water splash preventive plate 4 is provided from a water reservoir 3 to a diffuser 5 of an air conditioner. However, the plate 4 is installed at a position of the side of the reservoir 3. Thus, drain when condensed water generated in a heat exchanger is scattered out of the reservoir 3 and disturbance of the diffuser 5 are prevented, and an offensive odor and abnormal sound (noise) are prevented.

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