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1. 发明专利

JPH03158720A FIELD-USE TEST INSTRUMENT FOR HIGH-SENSITIVITY PARTICLE SENSOR 失效
公开(公告)号：JPH03158720A
公开(公告)日：1991-07-08
申请号：JP29839389
申请日：1989-11-16
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KASE TAKAO , ONO SHUJI
IPC分类号： G01D21/00 , G08B17/10
摘要： PURPOSE:To test the performance of the high-sensitivity particle sensor and to measure particulate concentration in an actual site by providing a particle concentration measurement part, a flow rate measurement part, a signal processing means, and an output means for data, and providing a signal processing function. CONSTITUTION:When the field operation of the high-sensitivity particle sensor 17 is tested, the air-suction side joint 12 of the testing device 1 is connected to an air suction pump connected to the sensor 17 and the air-outlet side piping 19 of the sensor 17 is connected to the air-outlet side joint 10 of the device 1. Then air flows in from the air intake 8 of the device 1 by opening a-b parts of selector valves 9 and 11 and is sucked by the air suction pump through an air filter 7, the valve 9, a particle concentration measurement part 2, a flow rate measurement part 3, valves 11 and 24, and the air suction joint 12. Then the valve 24 is operated to adjust a read value of a manometer 23 to a value in a normal use state, then a flow rate displayed on a display part 5 is read. When the read suction air flow rate is different from a standard value, a flow rate control valve attached to the air suction pump is adjusted to re-adjust the flow rate to the standard value.

2. 发明专利

JPH0310910B2 失效
公开(公告)号：JPH0310910B2
公开(公告)日：1991-02-14
申请号：JP23273584
申请日：1984-11-05
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： SUZUKI YOSHINOBU , SAITO SHUSAKU , KASE TAKAO
IPC分类号： G01P5/20 , G01P13/00

3. 发明专利

JPS639839A CORPUSCLE DETECTING METHOD 失效
公开(公告)号：JPS639839A
公开(公告)日：1988-01-16
申请号：JP15363386
申请日：1986-06-30
申请人： SHIMIZU CONSTRUCTION CO LTD , NIPPON SIGNAL CO LTD
发明人： NISHIYAMA MASANOBU , TSUKAHARA SHUICHI , OTANI KENJI , ONO SHUJI , KASE TAKAO
IPC分类号： G01N15/00
摘要： PURPOSE:To reduce the power consumption and to prolong the life of a sucking device which operates intermittently by shortening a stop time in an intermittent cycle and sucking air when the amount of corpuscles in air sucked by the sucking device increases. CONSTITUTION:A sampling control part 6 is stored previously with the permissible value of the amount of corpuscles detected by a detection part 2 when the amount of corpuscles in a space to be detected is in a normal state and the sucking device is operated in specific intermittent cycles. Then if the detection part 2 detects a value larger than the permissible value, the stop time in the intermittent cycles of the sucking device 3 is shortened to send air to the detection part 2 more frequently. Consequently, the air is sucked to the detection part 2 in shorter cycles than in the normal state and if the detection part 2 further detects corpuscles exceeding the permissible value, an alarm display part 5 operates to indicate abnormality.

4. 发明专利

JPS638995A DISASTER PREVENTION MULTI-STAGE ALARM EQUIPMENT FOR CLEAN ROOM 失效
公开(公告)号：JPS638995A
公开(公告)日：1988-01-14
申请号：JP15363886
申请日：1986-06-30
申请人： SHIMIZU CONSTRUCTION CO LTD , NIPPON SIGNAL CO LTD
发明人： NISHIYAMA MASANOBU , TSUKAHARA SHUICHI , OTANI KENJI , ONO SHUJI , KASE TAKAO
IPC分类号： G01N27/04 , G08B17/117 , G08B19/00 , G08B21/00 , G08B21/16

5. 发明专利

JPS61265561A APPARATUS FOR AUTOMATICALLY MEASURING CONCENTRATION OF IONIZED SUBSTANCE IN AIR 失效
公开(公告)号：JPS61265561A
公开(公告)日：1986-11-25
申请号：JP10716285
申请日：1985-05-20
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KASE TAKAO , SUZUKI YOSHINOBU
IPC分类号： G01N27/416 , G01N27/28 , G01N35/00
摘要： PURPOSE:To enable automatic measurement from sampling to an analytical process, by absorbing the ionized substance in air with water in an ionized substance absorbing apparatus and detecting the same in the absorbing solution while controlling each process by an operator. CONSTITUTION:Ultra-pure water 7 is sent to ionized substance absorbing apparatuses 15a, 15b, 15c from a quantitative water supply device 1 though piping 10. Air is sucked by an air feeder 30 to be successively sent to the absorbing apparatuses 15a, 15b, 15c in series by pipings 25, 26, 27 and, for example, Na air is absorbed with water. Next, the absorbing solution is sent to an ion detection device 40 from the absorbing apparatuses 15a-15c to detect the ionized substance while the detection data is inputted to an operator 49. Then, the concn. of Na in air is operated from the detection value of the ionized substance and the air supply amount. Because the ionized substance in air is automatically analyzed from sampling to an analytical process, analysis can be performed continuously and smoothly.

6. 发明专利

JPH0551822B2 失效
公开(公告)号：JPH0551822B2
公开(公告)日：1993-08-03
申请号：JP19896985
申请日：1985-09-09
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KASE TAKAO , SUZUKI YOSHINOBU
IPC分类号： F24F3/12

7. 发明专利

JPH0212399A COMPOSITE TYPE SMOKE SENSOR FOR CLEAN ROOM 失效
公开(公告)号：JPH0212399A
公开(公告)日：1990-01-17
申请号：JP16181088
申请日：1988-06-29
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KASE TAKAO , NISHIYAMA MASANOBU , ONO SHUJI
IPC分类号： F24F7/06 , G08B17/103 , G08B17/107
摘要： PURPOSE:To detect a variation of concentration of smoke extending over a wide range by constituting the title sensor so that not only a scattered light photodetector detects a scattered light from the grains of smoke but also a transmission light photodetector detects a light beam which has been decreased by fine grains of smoke. CONSTITUTION:A transmission light photodetector 7 can receive a light beam from a smoke sensing use light source 6. Also, in the second projecting part 2b, a scattered light photodetector 8 is provided, and this scattered light photodetector 8 is constituted so that when air is flowing to an air outlet nozzle 5 from an air inlet nozzle 3, a light beam which is scattered due to a fact that a light beam of the smoke sensing use light source 6 hits against this air flow can be received. In such a way, an operable concentration range can be widened, and a scale of a fire and a variation of status can also be decided surely.

8. 发明专利

JPS639848A CORPUSCLE DETECTING DEVICE 失效
公开(公告)号：JPS639848A
公开(公告)日：1988-01-16
申请号：JP15363286
申请日：1986-06-30
申请人： SHIMIZU CONSTRUCTION CO LTD , NIPPON SIGNAL CO LTD
发明人： NISHIYAMA MASANOBU , TSUKAHARA SHUICHI , OTANI KENJI , ONO SHUJI , KASE TAKAO
IPC分类号： G01N21/53 , G08B17/10 , G08B17/107
摘要： PURPOSE:To improve the measurement accuracy of a detecting device by positioning a projection part and a photodetection part mutually so that the long axis of the section of luminous flux projected from a projection part nearly crosses the center line of the visual field of photodetection of the photodetection part nearly perpendicularly at the intersection part of the visual fields of the projection part and photodetection part. CONSTITUTION:A detecting device projects a light beam on gas to be measured from the projection part 4 and photodetects scattered light from particulates suspended in the intersection part of the visual fields of the projection part 4 and photodetection part 5 by the photodetection part 5 to detect the particulates in air. Then, the long axis 4b of the section of the luminous flux 4a from the projection part 4 crosses the center line 5b of the photodetection part visual field 5a of the intersection part 6 of the visual field (luminous flux) 4a and 5a of the projection part and photodetection part 5 almost at right angles, so the scattered light photodetection area 7 of the photodetection part 5 becomes maximum. Therefore, the scattered light from particulates suspended in the intersection part 6 is photodetected by the photodetection part 5 most efficiently, so the measurement accuracy is improved.

9. 发明专利

JPS639831A METHOD AND DEVICE FOR GAS LEAK DETECTION 失效
公开(公告)号：JPS639831A
公开(公告)日：1988-01-16
申请号：JP15364086
申请日：1986-06-30
申请人： SHIMIZU CONSTRUCTION CO LTD , NIPPON SIGNAL CO LTD
发明人： NISHIYAMA MASANOBU , TSUKAHARA SHUICHI , OTANI KENJI , ONO SHUJI , KASE TAKAO
IPC分类号： G01N25/22 , G01M3/02 , G01M3/04 , G01M3/16 , G01N25/18
摘要： PURPOSE:To securely detect a gas leak even in a space which is opened by simple constitution by monitoring the temperature variation of piping itself which supply gas and its periphery and the temperature difference between two measurement points at the two measurement points. CONSTITUTION:If gaseous silane, for example, leaks at a piping joint part 2 of a gas pipe 1 and burns naturally, the heat produced by the combustion is conducted by air and the gas pipe 1 to spread in the periphery. Then the detection signal of a temperature sensor 4 varies and the comparison signal of a comparative arithmetic circuit 7 also varies at the stage where the heat is conducted to a heat conduction part 6 closest to the gas leak position (piping joint part 2). Consequently, an alarm board 9 detects the natural combustion due to the gas leak at the periphery of the heat conduction part 6 because the detection signal and comparison signal supplied to a comparing circuit do not coincide with a reference temperature distribution and temperature difference distribution data. Then, an alarm buzzer is made to sound and an alarm lamp is made to illuminate, indicating the gas leak.

10. 发明专利

JPS62207945A GAS LEAK DETECTING DEVICE 失效
公开(公告)号：JPS62207945A
公开(公告)日：1987-09-12
申请号：JP5078186
申请日：1986-03-08
申请人： SHIMIZU CONSTRUCTION CO LTD , NIPPON SIGNAL CO LTD
发明人： NISHIYAMA MASANOBU , ONO SHUJI , KASE TAKAO , TSUKAHARA SHUICHI
IPC分类号： G01N25/22 , G01M3/04 , G01N25/20 , G01N27/04
摘要： PURPOSE:To exactly detect the leak of gaseous silane even in an open space, by a simple constitution, by detecting the temperature rise of the piping itself and the piping periphery caused by the combustion of gaseous silane, and the generation of a combustion product. CONSTITUTION:A gas pipe 1 leads gaseous silane having a quality by which it burns when it is ejected into the air. To the gas pipe 1, plural sensor elements SA1-SAn are attached, respectively by a fitting and supporting tool 3, at a prescribed interval extending over the overall length. Each sensor element SA1-SAn consists of a temperature sensing element for sensing the temperature variation of the periphery, and its detecting signal is supplied to an alarm board 5 through a cable 4. The alarm board 5 is constituted of a storing circuit for storing and holding a detecting signal supplied from each sensor element SA1-SAn at a usual time, as a temperature distribution data which becomes a reference, a comparator for comparing a reference temperature distribution data read out of this storing circuit, with the detecting signal from each sensor element SA1-SAn, and a circuit for driving an alarm, based on the result of comparison of this comparing circuit.

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