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81. 发明专利

JPS52116951A HEATTTRANSMITTING APPARATUS 失效
公开(公告)号：JPS52116951A
公开(公告)日：1977-09-30
申请号：JP3257376
申请日：1976-03-26
申请人： HITACHI LTD
发明人： SENTORI MICHIO , HARA TOSHIJI , KASHIWARA YASUNARI
IPC分类号： F28D15/02 , F28D15/00
摘要： PURPOSE:A heat-transmitting apparatus devised to transfer or intercept heat from a room to another by boiling or stopping to boil the first liquid with the second liquid expansible by heat.

82. 发明专利

JPS5298476A RADIATION DEVICE 失效
公开(公告)号：JPS5298476A
公开(公告)日：1977-08-18
申请号：JP1488576
申请日：1976-02-16
申请人： HITACHI LTD
发明人： SENTORI MICHIO , KASHIWARA YASUNARI , HARA TOSHIJI
IPC分类号： F25D9/00 , F25D3/10 , G12B15/02 , H01L23/427 , H01L23/46
摘要： PURPOSE:To achieve the improvement in reliability and radiation effect of the device by sealing volatile liquid in the pipe connecting an evaporator to a condenser, and providing a heater on the way of liquid lifting pipe thereby lifting the iquid.

83. 发明专利

JPS5248862A REFRIGERATOR 失效
公开(公告)号：JPS5248862A
公开(公告)日：1977-04-19
申请号：JP12438575
申请日：1975-10-17
申请人： HITACHI LTD
发明人： SENTORI MICHIO , HARA TOSHIJI , KASHIWARA YASUNARI , ABE TOSHITSUNE , OSHIYAMA HIROICHI
IPC分类号： F25D11/02 , F25B5/00 , F28D15/00 , F28D15/02 , F28F27/00
摘要： PURPOSE:Improving cooling efficiency with such a process that a cooling chamber is cooled by a heat transmission equipment applying vaporizing and condensing and the frosting of a cooler provided at a chilling chamber is provented.

84. 发明专利

JPH04278165A CYLINDRICAL REFRIGERATOR 失效
公开(公告)号：JPH04278165A
公开(公告)日：1992-10-02
申请号：JP3584291
申请日：1991-03-01
申请人： HITACHI LTD
发明人： TOMINAGA KATSUMI , HARA TOSHIJI , FUSHIKI TAKAYUKI , IOKA KAZUO
IPC分类号： E05F15/12 , F25D23/00 , F25D23/02
摘要： PURPOSE:To provide a cylindrical refrigerator, whose opening and closing door is opened/closed slidingly by a motor. CONSTITUTION:A cylindrical refrigerator is provided with a door opening and closing device having a rotary supporting rod 4, orthogonal to the rotating direction of a door 2, a motor 13, rotating the rotary supporting rod 4, a connecting rod 5, connecting the door 2 to the rotary supporting rod, projections 14, provided at the upper end and lower end of the door, and grooves 3, receiving the projections 14 and guiding them while provided at the upper and lower end rims of an opening. According to this method, the door of the cylindrical refrigerator can be driven by a motor. A contacting part between the door and the main body of the refrigerator are the projection of the upper end of the door and the groove for guide whereby contact resistance in the opening and closing of the door can be restrained so as to be small.

85. 发明专利

JPH04203783A REFRIGERATOR 失效
公开(公告)号：JPH04203783A
公开(公告)日：1992-07-24
申请号：JP32908590
申请日：1990-11-30
申请人： HITACHI LTD
发明人： SANPEI TOSHIO , HARA TOSHIJI , OTSUKA KATSUJI , FUJIMOTO RYOICHI , KENMORI YOSHIHIKO
IPC分类号： F25D19/00 , F25D23/00
摘要： PURPOSE:To heighten an effect of draft by providing a dust on the back of a refrigerator whose upper part opens near the roof and lower end locates below a compressor's upper part in such a manner as to cover it, thereby causing heat to flow into the duct naturally and increase buoyancy. CONSTITUTION:Heat released from a condenser 10 rises higher than ducts 5a 5c due to natural convection by air coming in from an air intake 17 of the under surface orthogonally to the condenser 10 and is released. Also, position changes of lower end 22 of a duct 5 causes draft force of heat in the duct 5 to be changed. Heat released from a compressor 9 and the condenser 10 goes into the duct 5 along one or a plurality of ducts 5 and rises in the duct 5, which then gathers high temperature air passed through the compressor 9 and condenser 10. Thus occurred natural convection produces much more draft effect than a conventional refrigerator which releases heat from a machine room by natural convection, resulting in heat release of a machine room.

86. 发明专利

JPH0490454A FREEZER 失效
公开(公告)号：JPH0490454A
公开(公告)日：1992-03-24
申请号：JP20256790
申请日：1990-08-01
申请人： HITACHI LTD
发明人： KENMORI YOSHIHIKO , FUJIMOTO RYOICHI , HARA TOSHIJI , SHIBAYAMA MASAYUKI , HAYASHI MASAKATSU
IPC分类号： F25B1/00
摘要： PURPOSE:To save electric power by providing a valve device capable of operating, interlocking with the operation and shutdown of a compressor, and opening a refrigerant flow passage during the operation of the compressor, and closing said refrigerant flow passage during the shutdown of the compressor between a condenser and a pressure reduction device or between the pressure reduction device and a vaporizer. CONSTITUTION:When each chamber of a deep freezer is cooled down to a preset temperature by means of a freezing device which uses substitute refrigerant for CFC-12, such as HCFC-22 or HFC-134a, a drop in the cooling temperature is detected by a sensor, such as a thermostat installed inside the chamber operates so that the power supply may be suspended, which halts the operation of a fan motor 6 of a compressor or the like. At the same time, an on/off valve 7 reacts synchronously with this and closes a refrigerant flow passage. The on/off valve 7 is represented by a solenoid valve or a spontaneous power supply type solenoid valve, and a check valve built-in one piece fluid control valve or the like. This operation prevents high temperature high pressure gas refrigerant in the compressor 1 from flowing into a vaporizer, passing through a pressure reduction device 3 in terms of a condenser 2 and further a rotary compressor-mounted deep freezer. Therefore, this construction makes it possible to reduce thermal load, including the amount of heat leakage which enters through the insulation wall in the deep freezer and hence minimize the power consumption.

87. 发明专利

JPH03291465A REFRIGERATING APPARATUS 失效
公开(公告)号：JPH03291465A
公开(公告)日：1991-12-20
申请号：JP9054990
申请日：1990-04-05
申请人： HITACHI LTD
发明人： NAKAMURA HIROO , IWATA HIROSHI , HAYASHI MASAKATSU , HARA TOSHIJI , SHIBAYAMA MASAYUKI , FUJIMOTO RYOICHI , KENMORI YOSHIHIKO , HIJIKATA KUNIO
IPC分类号： F25B5/04 , F25D11/02
摘要： PURPOSE:To heighten the reliability of refrigerating capacity, by a method wherein one evaporator in which a refrigerant surely flows is provided on one refrigerant circuit led to the suction port of a compressor through the outlet port of an ejector and the other evaporator in which a temperature lower than that of the former evaporator is produced is provided on the other refrigerant circuit led to the suction port of the ejector through the outlet port thereof. CONSTITUTION:After a refrigerant gas with both high temperature and high pressure, which is compressed by a compressor 1, is liquefied by a condenser 2, the pressure thereof is reduced through a first throttle device 3 and an ejector 4, and the temperature thereof is lowered and enters a first evaporator 9. After the refrigerant is evaporated and one refrigeration is done at that place, the refrigerant gas is sucked into the compressor 1 again. In this case, since a pressure at a suction port 6 of the ejector 4 is lowered as compared with that of an outlet port 7 thereof, suction work is caused, and the refrigerant flow sucked into the suction port 6 from the outlet port 7 of the ejector 4 through a second throttle device 10 and a second evaporator 11 is produced and the refrigerant is evaporated and the other refrigeration is also done at the second evaporator 11. By the second throttle device 10, in addition, a refrigerant temperature evaporated at the second evaporator 11 is made lower than that of the first evaporator 9.

88. 发明专利

JPH03194376A REFRIGERATOR 失效
公开(公告)号：JPH03194376A
公开(公告)日：1991-08-26
申请号：JP33270889
申请日：1989-12-25
申请人： HITACHI LTD
发明人： USUI KENJI , HARA TOSHIJI , SHIBAYAMA MASAYUKI , ISHIKAWA FUMIO , KENMORI YOSHIHIKO
IPC分类号： F25D19/00
摘要： PURPOSE:To prevent refrigerant flowing sound of a refrigerating cycle to be generated upon stopping of a compressor by disposing the suction end of a suction tube extended downward from the upper part of the outlet of an accumulator under the lower end of the outlet of an inner pipe. CONSTITUTION:Refrigerant in an accumulator 6 after the cooling operation of a refrigerating cycle has been stopped is formed in two-phase zone of gas refrigerant 5 in an upper part and liquid refrigerant 4 in a lower part, and a gas and liquid boundary surface 12 is gradually raised due to an increase in the refrigerant 5 in an evaporator 1. However, since the gas of the upper part from the inlet of a suction tube 13 is sealed in a closed space of the upper part of the accumulator 6 when the surface 12 reaches a suction end 14 disposed at a lower position than the discharge end 15 of the inner pipe, gas pressure is raised. Simultaneously, the refrigerant 4 lifted from the tube 13 is arrived at a compressor, and heated by the heat of high temperature to be evaporated to raise the back pressure of the tube 13. The surface 12 ls pressed down by these two actions to maintain the outlet end 15 of the inner pipe disposed at the upper part than the end 14 in a gas zone to eliminate flowout of bubbling refrigerant into the refrigerant 4.

89. 发明专利

JPH03129279A DOOR OPENING AND CLOSING DEVICE 失效
公开(公告)号：JPH03129279A
公开(公告)日：1991-06-03
申请号：JP26612389
申请日：1989-10-16
申请人： HITACHI LTD
发明人： ITAGAKI YUKIO , IOKA KAZUO , HARA TOSHIJI , MAEDA SHINJI , YAMAZAKI SUSUMU
IPC分类号： F25D23/02
摘要： PURPOSE:To enable smooth and reliable opening and closing of a lateral biparting door through a low-cost mechanism and to prevent simultaneous release of engagement of fulcrums on both sides when a door is wide and large by a method wherein a resilient means by which 8 cam is restored to its original position when the cam is moved by means of an external force is brought into contact with a coupling lever. CONSTITUTION:Left and right cams 8 and 9 engaged with left and right binges 5 and 6 are intercoupled through two coupling levers of the one being an upper lever and the other being a lower lever in a manner to nip the cams in a sandwich shape. The coupling levers 10 and 11 are engaged with staged parts 24 and 25 mounted to the cams 8 and 9, and the coupling levers 10 and 11 and the cams 8 and 9 are formed so as to maintain a lock relation between the hinge pins 5, 6 and the cams 8, 9. Besides, a resilient means 26 to promptly return erroneous movement of the cams 8 and 9 to a regular position is provided. Thus, even when the positions of the cams 8 and 9 are erroneously moved, the cams are returned to a regular position in time for door closing operation. This constitution enables smooth and reliable opening and closing of a lateral biparting door through a low-cost mechanism, and prevents simultaneous release of engagement of left and right fulcrums even when a door is wide and large.

90. 发明专利

JPH0387582A DRAINAGE EVAPORATING APPARATUS OF REFRIGERATOR 失效
公开(公告)号：JPH0387582A
公开(公告)日：1991-04-12
申请号：JP22142789
申请日：1989-08-30
申请人： HITACHI LTD
发明人： OCHIAI HIDEO , TOMINAGA KATSUMI , KENMORI YOSHIHIKO , FUJIMOTO RYOICHI , OTSUKA KATSUJI , HARA TOSHIJI , HAYASHI MASAKATSU
IPC分类号： F25D19/00 , F25D21/14 , F25D23/00
摘要： PURPOSE:To improve a defrosting water evaporating performance and reduce the size of a drainage evaporating apparatus, a heat invasion into an icebox and a temperature rise in a compressor by leading the heat of the compressor from an exhaust heat passage formed between the bottom surface of an evaporating dish and the contour of the compressor to a hydrophilic evaporating plate via the ventilating opening of the evaporating dish by a draft. CONSTITUTION:The configuration of the bottom surface of an evaporating dish 11 provided in a space above a compressor 7 is formed into the similar figures of the contour of the compressor 7 along the circumference of the contour of the compressor 7. A passage 8 for discharging heat is provided between the bottom surface of the evaporating dish 11 and the contour of the compressor 7 with given spaces from them. The evaporating dish 11 is provided with a duct 9 for exhaust heat approximately just above the compressor 7. A plurality of hydrophilic fins 12 for evaporating defrosting water are provided in the opening of the duct 9. A high temperature and high pressure refrigerant discharge tube 13 may be provided above the duct 9 for the exhaust heat of the evaporating dish 11 in adjacent to the evaporating hydrophilic fins 12. The air flows via the heat discharging passage 8 and the duct 9 for discharging the heat of the evaporating dish and further the ventilating air conducts an effective heat exchange by the fins 12 for evaporating the defrosting water.

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