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41. 发明专利

JPS6056995B2 失效
公开(公告)号：JPS6056995B2
公开(公告)日：1985-12-12
申请号：JP13798276
申请日：1976-11-17
申请人： HITACHI LTD
发明人： NAGAI MAKOTO , HAMADA YASUYOSHI , HARADA FUMIO , HARUKAWA TSUNEO , NAKANO NOBORU , OGAWA TAKEO
IPC分类号： F28F9/22 , F25B39/02

42. 发明专利

JPS6052752A MOBILE TEMPERATURE TESTING DEVICE 失效
公开(公告)号：JPS6052752A
公开(公告)日：1985-03-26
申请号：JP16030183
申请日：1983-09-02
申请人： HITACHI LTD
发明人： OGAWA TAKEO
IPC分类号： G01N25/20 , G01N17/00
摘要： PURPOSE:To facilitate an aging test or the like at a low-temperature atmosphere by arranging the principal part of a refrigerating cycle instrument and the controller, which set the inside of a space area to an optional temperature condition, on the outside of a three-dimensional structure body and providing a moving means in the foot part of a side face. CONSTITUTION:After an object 9 to be tested such as a large scale computer or the like is assembled in a production assembling field, this testing instrument 1 is moved on site and a door 7 is opened and closed to store the object 9 to be tested in the space area 10 of the instrument body. Since this testing instrument is provided with the refrigerating cycle instrument and the controller, the space area 10 can be set to low-temperature atmosphere by a cooling operation and can be kept in a required low-temperature condition and the test at a low temperature can be executed. When the cooling operation is stopped to supply power to the object to be tested, an aging test or the like at a high-temperature atmosphere can be executed by its self-heat evolution. Since a vinyl cover 8 is attached to the foot part setting casters 6, the heat in the space area 10 is not leaked.

43. 发明专利

JPS52129049A SHEEL AND TUBE TYPE WATER COOLER 失效
公开(公告)号：JPS52129049A
公开(公告)日：1977-10-29
申请号：JP4446376
申请日：1976-04-21
申请人： HITACHI LTD
发明人： OGAWA TAKEO , NAKANO NOBORU , HARUKAWA TSUNEO , SATOU NOBUO , TSUJI HIROMI , HAMADA YASUYOSHI
IPC分类号： F25B39/02
摘要： PURPOSE:To eliminate bad distribution of refrigerant to each heat exchanger, improve heat transmission performance and to reduce size and weight of the water cooler itself, by forming the heat exchanger pipes in a U-shape to eliminate a refrigerant turning chamber conventionally required.

44. 发明专利

JPH06285378A METHOD FOR CONTROLLING THERMOSTATIC BATH 失效
公开(公告)号：JPH06285378A
公开(公告)日：1994-10-11
申请号：JP8035793
申请日：1993-04-07
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： ONO MASATOSHI , OGAWA TAKEO , OZEKI HIROYUKI
IPC分类号： B01L7/00 , B01L7/04 , B01L11/02
摘要： PURPOSE:To heat a sample to a desired temp. regardless of the kind and weight of the sample by using a thermostatic device. CONSTITUTION:The temp. of a sample 10 detected by a temp. sensor 11 is compared with a set temp. inputted to a control part 12, and the temp. of an air blowing port is automatically corrected so that the sample is heated to the set temp. within an operating time. Consequently, the test of the sample at a constant temp. is precisely conducted at all times.

45. 发明专利

JPH06194411A IC HANDLER 失效
公开(公告)号：JPH06194411A
公开(公告)日：1994-07-15
申请号：JP34461592
申请日：1992-12-24
申请人： HITACHI LTD , HITACHI SHIMIZU ENG KK
发明人： OZAWA KAZUYOSHI , MASUDA SHINTARO , SUGIYAMA SHIGEAKI , OGAWA TAKEO
IPC分类号： B65G47/08 , G01R31/26 , H01L21/677 , H01L21/68
摘要： PURPOSE:To provide an IC handier which can suck or detach ICs simultaneously by two IC heads in conformity with the different distances of IC storing parts of a feed tray, a preheater and a loader shuttle. CONSTITUTION:An IC head B is fixed to a robot 9, while an IC head A is moved by a motor 17, a ball screw 18 and pulleys 23, 24. Accordingly, the distance of the IC heads A and B is changeable. Two ICs are sucked or removed simultaneously by two IC heads A and B in conformity with the different distances of IC storing parts of a feed tray 1, a preheater 5 and a shuttle 6. Since the distance of two IC heads A and B can be freely set, this IC handier processes any kind of trays in a short time, and is effective to improve the productivity.

46. 发明专利

JPH05126414A REFRIGERATOR AND APPARATUS FOR CONSTANT-TEMPERATURE AND CONSTANT-HUMIDITY 失效
公开(公告)号：JPH05126414A
公开(公告)日：1993-05-21
申请号：JP28983891
申请日：1991-11-06
申请人： HITACHI LTD
发明人： KAWAMOTO YASUO , OGAWA TAKEO , WATANABE HIROSHI , HATTA HIROSHI , SHIMIZU MASASHI
IPC分类号： B01L7/00 , B01L99/00 , F25B1/00 , G01N17/00 , G01N25/00
摘要： PURPOSE:To obtain the required temperature for evaporating refrigerant even when the ambient temperature of a refrigerator is high and apply this possibility to an apparatus for constant temperature and constant humidity in maintaining the minimum temperature in a laboratory. CONSTITUTION:A device-control microcomputer calculates the comparison of a temperature detected by a refrigerant-evaporation temperature sensor 15 with a set temperature and a pulse signal corresponding to the difference therebetween is transmitted by a pulse-based adjuster to an electronic proportional control valve 12 as a command for changing the valve opening. Therefore, without being affected by changes in the ambient temperature, the refrigerant- evaporation temperature at an evaporator 13 can be maintained at a specified point in a stabilized state. When the ambient temperature rises high, the evaporation temperature is lowered to a specified point so that the inside of a laboratory consisting of an apparatus for constant temperature and constant humidity can be kept at the specified minimum temperature.

47. 发明专利

JPH0596185A METHOD FOR CONTROLLING REFRIGERATING MACHINE OF THERMOSTATIC AND HUMIDISTATIC BATH 失效
公开(公告)号：JPH0596185A
公开(公告)日：1993-04-20
申请号：JP25499091
申请日：1991-10-02
申请人： HITACHI LTD
发明人： ONO MASATOSHI , OGAWA TAKEO , KAWAMOTO YASUO
IPC分类号： B01L7/00 , B01L99/00 , F25B1/00 , F25D11/00
摘要： PURPOSE:To make the cooling capacity of a refrigerating machine variable and to save energy by keeping the machine always turned on to eliminate its hunting, controlling the machine precisely and adjusting the temp. condition and the ambient temp. conditions of the device. CONSTITUTION:The temp. in a thermostatic bath is detected by a temp. sensor 1. A temp. controller 2 receives a temp. set on a control panel 3 from a controller 4, the bath temp. measured by the sensor 1 and the set temp. are compared, and a PID signal is given to a solid-state relay 5, and the bath temp. value is given to the controller 4 by the temp. controller 2. A voltage corresponding to the PID value is supplied from a power source 6 to a heater 7 through the solid-state relay 5. A variable-frequency power source is supplied to a rotary compressor 11 from a power source 8 through a converter 9 and an inverter 10.

48. 发明专利

JPH04148160A BINARY REFRIGERATING CYCLE 失效
公开(公告)号：JPH04148160A
公开(公告)日：1992-05-21
申请号：JP27226590
申请日：1990-10-12
申请人： HITACHI LTD
发明人： YASUDA HIROSHI , ISHIHANE KYUHEI , HAYASHIDA TATSUO , OGAWA TAKEO
IPC分类号： F25B7/00
摘要： PURPOSE:To vary cooling capacity without reducing the efficiency of energy corresponding to a load in a low temperature environment by employing capacity variable compressors at high and low temperature sides of a binary refrigerating cycle. CONSTITUTION:A high temperature side refrigerating cycle has a capacity control compressor 1, a condenser 2, an expansion valve 3, and an evaporator 4, and a low temperature side refrigerating cycle has a capacity control compressor 5, a condenser 6, an expansion valve 7, an evaporator 8 and an expansion tank 9 for preventing pressure rise at the time of stopping. The evaporator 4 of the high temperature side cycle and the condenser 6 of the low temperature side cycle have a heat exchanging relation, and condensed waste heat of the low temperature side cycle is absorbed by the evaporator of the high temperature side cycle. The compressors 1, 5 are capacity controllable, and a variation in the load in a low temperature environment in which the evaporator 8 is mounted can be processed by the capacity controls. Since the capacity controlling method of the compressor uses a method of using an unloader mechanism, etc., and hence is not a method of varying a capacity by contracting a suction tube, the efficiency of energy is not reduced at the time of controlling the capacity.

49. 发明专利

JPH0436125A CONTROL CIRCUIT FOR WATER-COOLED-AND-AIR-COOLED TEMPERATURE CONDITIONING UNIT 失效
公开(公告)号：JPH0436125A
公开(公告)日：1992-02-06
申请号：JP14142190
申请日：1990-06-01
申请人： HITACHI LTD , HITACHI AIR CONDITIONING & REF
发明人： ONO MASATOSHI , OGAWA TAKEO , OTANI NOBUO
IPC分类号： A01G9/24 , A01G9/26 , F25D11/00
摘要： PURPOSE:To prevent plant withering by actuating a cooling water-circulating pump in the operation of protective devices installed on the title unit to feed water even if such devices are operated. CONSTITUTION:Protective devices are wired in series; and even if any one of these devices is operated, a cooling water-circulating pump 11 is actuated, thereby making a water supply to a hydroponic bed 21 etc. If the part(s) in the water supply system fail(s), the failure is detected by a water flow detecting means 12 and informed through an alarm buzzer etc., resulting in the shutdown of a water supply channel.

50. 发明专利

JPH03161054A CONTROL OF TEMPERATURE AND HUMIDITY IN CONSTANT TEMPERATURE AND HUMIDITY CHAMBER 失效
公开(公告)号：JPH03161054A
公开(公告)日：1991-07-11
申请号：JP30167389
申请日：1989-11-20
申请人： HITACHI LTD
发明人： HATTA HIROSHI , OGAWA TAKEO , WATANABE HIROSHI
IPC分类号： F24F11/02 , B01L99/00
摘要： PURPOSE:To contrive energy conservation and the improvement of controllability by a method wherein, to maintain the temp. and humidity in the spatial region of a constant temp. and humidity chamber at a constant level, a compressor is so controlled as to bring the output of a heater and a humidifier close to zero. CONSTITUTION:To control temp. and humidity in the spatial region of a constant temp. and humidity chamber enclosed by heat insulating materials, there are provided therein an air blower 1 for circulating air therein, a dry-bulb temp. sensor 2, a wet-bulb temp. sensor 3, a heater 4 and a humidifier 5 controllable by the control output signals from the temp. and humidity controllers 10 and 11 actuated based on the detection signals from the sensors 2 and 3 and an evaporator 6 in a refrigerating cycle made changeable in its cooling and dehumidifying ability by regulating the revolution number of a refrigerant compressor 7. To maintain the temp. and humidity in the aforesaid spatial region at a constant level, the output of the heater 4 and the humidifier 5 are monitored and the revolution number of the compressor 7 is so controlled as to bring a positive number of the minimum value as close as to zero. As a result, energy conservation and the improvement of controllability can be contrived.

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