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1. 发明专利

JPH05107044A RADIATION DETECTOR FOR DETECTING DEPOSITION INNER SURFACE 失效
公开(公告)号：JPH05107044A
公开(公告)日：1993-04-27
申请号：JP29990891
申请日：1991-10-19
申请人： HITACHI BUILDING SYST ENG , HORIBA LTD
发明人： OHIRA YOSHIHIRO , HIRAMA YUTAKA , NAGAO TOSHIHARU , ITAYA NORIO
IPC分类号： G01B15/02
摘要： PURPOSE:To obtain a compact radiation detector for detecting deposit on an inner surface, which can readily measure even the thickness of the deposit on the inner surface of a pipe or the like arranged in a narrow place. CONSTITUTION:A detecting part 2, which detects the radiation dose transmitted through an object to be measured as an electrical signal, and an amplifier 4, which amplifies the detected signal from the detecting part 2 and sends out the output signal to the outside, are independently formed, respectively, and connected with a coaxial cable 6. The detecting part 2 is formed by combining a cesium iodide crystal 8 surrounded with a light reflecting material 7 and a photodiode 9.

2. 发明专利

JPH08209755A TROUBLE PRECOGNITION DEVICE OF BALL TAP TYPE CONSTANT WATER LEVEL VALVE 失效
公开(公告)号：JPH08209755A
公开(公告)日：1996-08-13
申请号：JP1446395
申请日：1995-01-31
申请人： HITACHI BUILDING SYST ENG
发明人： KOBAYASHI YASUSHI , MATSUI TAKAYUKI , OHIRA YOSHIHIRO , ARIMIZU KOJI
IPC分类号： E03B11/00
摘要： PURPOSE: To foresee troubles of a constant water level valve without mistakes, by providing a preventive means against trouble-precognition so as not to detect an indication of a trouble from the measured result of the water level of a water receive tank, when an earthquake is detected by an earthquake foreseeing means. CONSTITUTION: In a trouble precognition device 14 provided with a water level detector 8 continuously measuring the water level in a water receive tank 2 of a water supply equipment of a building and a detector catching an indication of troubles of a ball-tap type constant water level valve 11 controlling water supply to the water receive tank 2 in accordance with the measured result of the detector 8, an earthquake-detector 13 is installed. When the detector does not detect earthquakes, the measured figure of the water level is transmitted to the detecting part through a preventive means against trouble precognition to diagnose the trouble precognition. When the detector 13 detects an earthquake, the measured figure of the water level is not transmitted to the detecting part in the preventive means against trouble precognition and further, the indication of troubles is not detected from the measured result of water level. When the water level has varied due to an earthquake, the trouble of valve 11 is foreseen so that the variation is not regarded as an indication of the valve trouble by mistake.

3. 发明专利

JPH0850047A WATER-LEVEL MEASURING METHOD 失效
公开(公告)号：JPH0850047A
公开(公告)日：1996-02-20
申请号：JP18356894
申请日：1994-08-04
申请人： HITACHI BUILDING SYST ENG
发明人： MATSUI TAKAYUKI , OHIRA YOSHIHIRO , ARIMIZU KOJI , ISHIOROSHI TOMOMI , KOBAYASHI YASUSHI
IPC分类号： G01F23/24
摘要： PURPOSE:To provide a water-level measuring method, which compensates for the effect of a voltage for measuring water resistance between electrode rods and can accurately detect the water level based on the resistance between the electrode rods. CONSTITUTION:The AC voltage having the commercial frequency is applied on electrode rods 1, 2 and 3 for setting the initial value from a measuring power supply. The magnitude of the voltage is detected with a voltage measuring means 6 and inputted into a water-level operating means 10. Current detecting means 7 and 8 detect the currents flowing through the water between the electrode rods 1 and 2 and 1 and 3 for setting the initial value and input the values into the water-level operating means 10. With the water-level detecting means 10, the appropriate expression of the exponential function of the resistance of water is operated and obtained based on the signals of the voltage measuring means 6 and the current detecting means 7 and 8 and the preset lengths of the electrode rods 2 and 3. The water level is operated with the water resistance obtained by the approximate expression of the exponential function and the resistance expression between the rods 1 and 2 for the water-level measurement.

4. 发明专利

JPH07331709A WATER SUPPLY FACILITY O BUILDING 失效
公开(公告)号：JPH07331709A
公开(公告)日：1995-12-19
申请号：JP13053294
申请日：1994-06-13
申请人： HITACHI BUILDING SYST ENG
发明人： OHIRA YOSHIHIRO , MATSUI TAKAYUKI , ARIMIZU KOJI , ISHIOROSHI TOMOMI , KOBAYASHI YASUSHI
IPC分类号： E03B11/12
摘要： PURPOSE:To provide a water supply facility which can detect a trouble of the facility and quickly deal with the trouble shooting by providing a first water level detector steppedly detecting the water level in a water andtank and a second water level detector continuously detecting the water level. CONSTITUTION:A water level detector 13 steppedly detecting a water level and a water level detector 16 continuously detecting a water level are provided in an altitude water tank 3. When the water level in the tank 3 is rising from the water level A to the water level D, the actuating water level of the electrode BC for commanding start of a storage pump 7 of the detector 13 in the vicinity of the water level B is between the detected water level B1 and B2 of the detector 16. If a trouble is generated in the detector 13, the electrode BC does not actuate while the detected water level of the detector 16 rises from B1 to B2, and the warning judging means of predict alarm device 17 judges the abnormality so as to raise an alarm. Convessely, if the detector 16 is troubled, the detector 16 does not output on the water level on which the electrode BC actuates between B1 and B2, and the device 17 similarly raises an alarm.

5. 发明专利

JPH06235627A MEASURING APPARATUS FOR THICKNESS OF ADHERING SUBSTANCE WITHIN PIPING 失效
公开(公告)号：JPH06235627A
公开(公告)日：1994-08-23
申请号：JP2139593
申请日：1993-02-09
申请人： HITACHI BUILDING SYST ENG
发明人： OHIRA YOSHIHIRO , ARIMIZU KOJI
IPC分类号： G01B15/02 , G01B17/02
摘要： PURPOSE:To provide a thickness measuring apparatus which can be easily set to a to-be-measured pipe and can correctly measure the thickness of an adhering object all over the periphery of the pipe. CONSTITUTION:The apparatus is provided with a base part 2 having a pair of arms capable of holding a to-be-measured pipe 1, a guide body 3 supported by the base part 2 in the periphery of the pipe 1, and mounting plates 4, 5 guided by the guide body 3. The guide body 3 is divisible. A radiation source 6 to be mounted to one mounting plate 4 and a radiation sensor 7 to be mounted to the other mounting plate 5 are set via the pipe 1. The radiation source 6, the radiation sensor 7 and an ultrasonic probe 8 are integrally rotated along the outer peripheral surface of the pipe 1.

6. 发明专利

JPH06135655A COOLER FOR INSIDE OF ELEVATOR SHAFT 失效
公开(公告)号：JPH06135655A
公开(公告)日：1994-05-17
申请号：JP28887392
申请日：1992-10-27
申请人： HITACHI BUILDING SYST ENG
发明人： ARIMIZU KOJI , OHIRA YOSHIHIRO , TAKASU HIDEKI , HANDA TSUGIO
IPC分类号： B66B7/00
摘要： PURPOSE:To provide a cooler for the inside of an elevator shaft which can prevent the shortage of the cooling capacity due to the inflow and outflow of the air stream supplied from the outside of the elevator shaft. CONSTITUTION:A cooler for an elevator is constituted of a connecting duct 2, blowing fan 3 and a heat exchanger 4 which are installed inside the connecting duct 2, ventilating ducts 5a and 5b whose intermediate parts are connected by the connecting duct 2, intake/exhaust ports 6a and 6b opened at the upper part top edge part of the ventilating ducts 5a and 5b, and the intake/exhaust ports 6c and 6d opened at the lower part top edge part of the ventilating ducts 5a and 5b.

7. 发明专利

JPH0518729A APPARATUS FOR MEASURING SUBSTANCE ADHERING TO INSIDE OF PIPE 失效
公开(公告)号：JPH0518729A
公开(公告)日：1993-01-26
申请号：JP19748191
申请日：1991-07-12
申请人： HITACHI BUILDING SYST ENG
发明人： OHIRA YOSHIHIRO
IPC分类号： G01B15/02
摘要： PURPOSE:To precisely measure the pipe internal conditions of adhering substances which adhere to the inner surface of a pipe covering the whole length of the pipe. CONSTITUTION:A guide rail 2 is pinched and fixed along the circumferential direction of the outside of a pipe and a C-shaped sliding plate 3 to run on the guide rail 2 by a guiding apparatus is installed. A radiation source 6 and a radiation sensor 7 are set on the opposite to each other on a line of the sliding plate 3 running almost the center of the pipe and the pipe's inside conditions are measured by altering their angle simultaneously with rotating and running the sliding plate 3.

8. 发明专利

JPH0925880A PUMP DETERIORATION MONITOR FOR LIQUID SUPPLY SYSTEM 失效
公开(公告)号：JPH0925880A
公开(公告)日：1997-01-28
申请号：JP17241195
申请日：1995-07-07
申请人： HITACHI BUILDING SYST ENG
发明人： SATO YOSHIO , OHIRA YOSHIHIRO
IPC分类号： F04B49/10 , F04B23/02
摘要： PROBLEM TO BE SOLVED: To provide a pump deterioration monitor for a liquid supply system that can positively detect the lowering of performance of a pump. SOLUTION: A pump 5 is driven by a motor 5M to feed water in a water receiving tank 1 to a pressure tank 11 through a distributing pipe 6 and a branch pipe 9. Pressure in the distributing pipe 6 is made specified pressure POFF, and water is fed to a consumer at this pressure. A pressure switch 14 outputs a second signal at the pressure POFF and outputs a first signal at the specified lower pressure PON. A pump control panel 15 drives the motor 5M by the first signal and stops the motor 5M by the second signal. When a motor current detected by a current transformer 20 is the specified value or less, a failure predicting unit 21 starts clocking operating time by the first signal and stops clocking by the second signal. The clocked operating time is compared with standard operating time to judge whether the performance of the pump is lowered or not.

9. 发明专利

JPH08212476A BUILDING TERMINAL DEVICE 失效
公开(公告)号：JPH08212476A
公开(公告)日：1996-08-20
申请号：JP1446295
申请日：1995-01-31
申请人： HITACHI BUILDING SYST ENG
发明人： IKEDA HAJIME , MATSUI TAKAYUKI , YUMINAKA TAKEO , OHIRA YOSHIHIRO
IPC分类号： G08B21/00 , G08B21/10 , G08B25/04 , G08B29/18
摘要： PURPOSE: To reduce judging operation by a monitor staff by extending and setting the detection time of water level variation when earthquake occurrence is detected, and making detection, which is shorter than the set time, ineffective. CONSTITUTION: When a sensor 2b detects an earthquake, a detecting device 3 sends its information to an earthquake processor 6 which decides which of a fault of facilities and the earthquake a state change of a feed water facility equipment is caused and sends the decision result to a processor 4. When the earthquake is detected here, the length of the detection set time of a water level variation detection signal is increased to approximately one minute as an experimental value of continuance of the earthquake and further to the length of a period as a set value of the attenuation time of an impulse of the water level in a water tank depending upon the water tank and the structure characteristic of a building; when the detection continuance is shorter than the period, the detection of the water level variation signal is made ineffective. Consequently, when the earthquake occurrence is detected, the detection time of the water level variation is extended and set and the detection which is shorter than the set time is made ineffective, so the earthquake can be discriminated from fault.

10. 发明专利

JPH07234043A METHOD FOR KNOWING CAPACITY OF INDOOR-SIDE HEAT EXCHANGER IN AIR CONDITIONING EQUIPMENT 失效
公开(公告)号：JPH07234043A
公开(公告)日：1995-09-05
申请号：JP2438994
申请日：1994-02-22
申请人： HITACHI BUILDING SYST ENG
发明人： ARIMIZU KOJI , ISHIOROSHI TOMOMI , KOBAYASHI YASUSHI , OHIRA YOSHIHIRO
IPC分类号： F25B49/02
摘要： PURPOSE:To obtain a method for knowing the capacity of an indoor-side heat exchanger in air conditioning equipment which makes it possible to know the capacity of heat exchange of the indoorside heat exchanger without causing any trouble for a person in a room, when indoor air conditioning is executed. CONSTITUTION:By using a measured value obtained from an outdoor machine 5 and a Mollier chart, a difference h1 between enthalpy values of a refrigerant at an inlet and an outlet of an indoor-side heat exchanger 2 and a difference h2 between the enthalpy values of the refrigerant at the inlet and the outlet of an outdoor-side heat exchanger 5 are calculated, and a value h1/h2 of the ratio between them is multiplied by the amount of heat exchange of the outdoor- side heat exchanger 5 obtained by measuring an intake and an exhaust of the heat exchanger 5. Thereby the amount of heat exchange of the indoor-side heat exchanger 2 is determined.

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