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1. 发明专利

ES2224557T3 UNIDAD DE INTERIOR DEL TIPO EMPOTRADO EN EL TECHO. 未知
公开(公告)号：ES2224557T3
公开(公告)日：2005-03-01
申请号：ES99305671
申请日：1999-07-16
申请人： HITACHI LTD
发明人： KOSUGI SHINICHI , SANO TAKASHI , HATA YOSHIKI , SHIKAZONO NAOKI
IPC分类号： F24F1/00
摘要： Se presenta una unidad de interior embebida en el techo que tiene una altura reducida para suministrar un tamaño compacto del cuerpo unitario y que suministra una gran capacidad de refrigeración/calentamiento. La unidad de interior embebida en el techo que comprende dos puertos de insuflado de aire (8) y que está embebida en el techo comprende un intercambiador de calor (11) en forma de U con los lados de la U dispuestos sobre los lados largos del cuerpo unitario (1) y conectado a un tubo colector para hacer circular un refrigerante en un extremo de un lado abierto de la U, puertos de insuflado de aire (8) dispuestos para extenderse desde el lado del fondo de la U y un ventilador centrífugo (3) dispuesto al lado del lado del fondo de la U con relación a un centro substancial de la dirección de la longitud de los lados de la U.

2. 发明专利

GB2344878B Ceiling embedded type indoor unit 未知
公开(公告)号：GB2344878B
公开(公告)日：2001-03-07
申请号：GB9929675
申请日：1999-12-15
申请人： HITACHI LTD
发明人： HATA YOSHIKI , SANO TAKASHI , KOSUGI SHINICHI
IPC分类号： F24F11/04 , F24F1/00 , F24F13/30
摘要： In a ceiling embedded indoor unit for an air conditioner, blower noise is prevented while maintaining a high air conditioning capacity. The ceiling embedded indoor unit is provided with a U-shaped heat exchanger placed in a casing embedded in a ceiling. The U-shaped heat exchanger includes two side portions, a portion connecting the side portions at one end, and blowers arranged in an inner space of the heat exchanger. A decorative panel is mounted to a lower surface of the casing that has two elongated air outlet ports in correspondence to the side portions of the heat exchanger and an air suction port formed between the air outlet ports. A control apparatus controls the number of rotations of the blower near the valley portion of the U-shaped heat exchanger to be higher than the blower near the open end.

3. 发明专利

GB2344878A A ceiling embedded air conditioner 未知
公开(公告)号：GB2344878A
公开(公告)日：2000-06-21
申请号：GB9929675
申请日：1999-12-15
申请人： HITACHI LTD
发明人： HATA YOSHIKI , SANO TAKASHI , KOSUGI SHINICHI
IPC分类号： F24F11/04 , F24F1/00 , F24F13/30
摘要： A ceiling embedded air conditioner comprises a U-shaped heat exchanger 11 which is placed in a casing 1 embedded in a ceiling and blowers 3a, 3b which are arranged in an inner space of the U-shaped heat exchanger 11. The U-shaped heat exchanger 11 has two side portions and a bottom portion. A panel is mounted on a lower surface of the casing 1 and has two elongated air outlet ports and an air inlet suction port formed between the air outlets. The air conditioner has a control apparatus for controlling the rotations of the blowers so that the rotation of the blower next to the bottom portion of the U-shaped heat exchanger 11 is different form the blower located near the open face of the U-shaped heat exchanger 11. In an alternative embodiment the heat exchanger is C-shaped. In another embodiment the vertical position of the blowers 3a, 3b in the casing 11 is different for each blower. The air conditioner may have a rectifying plate attached to the heat exchanger for encouraging air flow to the heat exchanger 11. The air conditioner reduces wind sound.

4. 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.

5. 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.

6. 发明专利

JPH1123052A CEILING BUILT-IN TYPE AIR CONDITIONER 失效
公开(公告)号：JPH1123052A
公开(公告)日：1999-01-26
申请号：JP10732698
申请日：1998-04-17
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： NAGAMATSU SHINICHIRO , SANO TAKASHI , HATA YOSHIKI , FUKAZAWA TOSHINORI
IPC分类号： F24F13/20 , F24F13/28 , F24F1/00
摘要： PROBLEM TO BE SOLVED: To provide a ceiling built-in type air conditioner in which an operation under a high pressure may not be performed even in the case that non- azeotropic mixed refrigerant, in particular, R407C refrigerant is used. SOLUTION: There is provided a ceiling built-in type air conditioner having an ornamental panel 7 in which a suction grill 10 is installed at a lower part of a main body 2 of the air conditioner, wherein this air conditioner is comprised of a heat exchanger 3 through which refrigerant of non-azeotropic refrigerant flows; guides 20, 23 which can be fixed to or removed from a suction grill 10; a wire 13 for supporting the suction grill 10 through the guides in such a way that the grill can be freely lifted up or descended; and a filter 11 removably installed at the suction grill 10.

7. 发明专利

JPH10110971A AIR CONDITIONER HAVING LIQUID CRYSTAL OPERATING SECTION 失效
公开(公告)号：JPH10110971A
公开(公告)日：1998-04-28
申请号：JP26699196
申请日：1996-10-08
申请人： HITACHI LTD
发明人： HATA YOSHIKI , IZUSHI MINETOSHI
IPC分类号： F24F11/02 , F24F13/20 , F24F1/00
摘要： PROBLEM TO BE SOLVED: To eliminate thermal insulating members which are used for prevention of a dew formation of a liquid crystal operating part, reduce a cost and prevent a visibility of the liquid crystal display from being reduced by a method wherein the operating part having a liquid crystal display is positioned at an upper part of an evaporator. SOLUTION: An operating part in a separate type air conditioner is integrally constituted with an indoor device. This device has such a constitution that an operating part 1 having a liquid crystal displaying device is positioned at an upstream side of an evaporator 2. With such an arrangement as above, even in the case of cooling operation, the rear surface of the operating part 1 is not exposed to cold air after being heat exchanged, so that there is no possibility that an occurrence of dew formation to be caused by a temperature difference between a front part and a rear surface of the operating part is generated. Thus, it is possible to perform a dew formation preventing design and save a test expenditure and a thermal insulating member expenditure. In addition, the central part of the device is bulged out and an operating part 1 having a liquid crystal display is arranged at an upper part of the bulged-out section, resulting in that the liquid crystal displaying part is directed upward, its face approaches orthogonally in respect to the sight lien of a person and his visibility can be improved.

8. 发明专利

JPH09159290A AIR CONDITIONER 失效
公开(公告)号：JPH09159290A
公开(公告)日：1997-06-20
申请号：JP31881595
申请日：1995-12-07
申请人： HITACHI LTD
发明人： HATA YOSHIKI
IPC分类号： F25B1/00
摘要： PROBLEM TO BE SOLVED: To improve the reliability of a freezing cycle in freezing cycle control of an air conditioner or a freezer by ensuring compressor oil viscosity upon starting the compressor, preventing discharge gas temperature from excessively rising. SOLUTION: When discharge gas temperature sensed by a temperature sensor 2 provided on a discharge pipe of a compressor 1 exceeds a predetermined value, the compressor 1 is interrupted by separating a relay 5 with an instruction of a control part 4 and is restarted. Opening of an electronic expansion valve 7 upon starting is more opened than initial opening of the expansion valve upon starting of an air conditioner so that overheating of suction gas into an evaporator 8 and the compressor is also lowered whereby discharge gas temperature upon restarting of the compressor is prevented from excessively rising.

9. 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.

10. 发明专利

JPH04363521A AIR-CONDITIONER 失效
公开(公告)号：JPH04363521A
公开(公告)日：1992-12-16
申请号：JP13753991
申请日：1991-06-10
申请人： HITACHI LTD
发明人： HATA YOSHIKI , URASHIMA HARUO
IPC分类号： F24F13/20 , G10K11/16
摘要： PURPOSE:To offer a construction around an external shell of an indoor unit of an one-side recessed-in-ceiling cassette type air-conditioner for easily reducing noise at a low cost. CONSTITUTION:An external shell 1 has a semicircular cross-section to perform flow-straightening inside an indoor unit. Therefore, both side plates 11, a fan mounting plate 3, and a water receiving pan support plate 6 are firmly attached. As a result, a unit having a semicircular cross-section can be built with a simple construction without supplement parts, so that noise reduction can be achieved at an extreme low cost.

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