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21. 发明专利

JPH09152416A CARBON DIOXIDE GAS DETECTION ELEMENT AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH09152416A
公开(公告)日：1997-06-10
申请号：JP31399795
申请日：1995-12-01
申请人： TOKYO GAS CO LTD , YAZAKI CORP
发明人： KONO TAKASHI , TANDA AKIFUMI , MOCHIZUKI KAZU , TAKASHIMA HIROMASA , YASUGATA KAZUTOSHI
IPC分类号： G01N27/409 , G01N27/406 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To determine the concentration of CO in the exhaust gas from a burner where the combustion load fluctuates significantly by modifying an electrode material, composed of the mixture of a platinum group metal and an oxygen ion conductive solid electrolyte, with a specified transition metal oxide. SOLUTION: The electrode material of a solid electrolyte CO sensor composed of the mixture of a platinum group metal and an oxygen ion conductive solid electrolyte is modified with a specified transition metal oxide. Consequently, the adverse effect of H2 in exhaust gas 6 on the detection sensitivity of CO is suppressed. More specifically, CO and H2 in exhaust gas 6 causes electrochemical reaction on the oxygen ion at the three-phase interface of exhaust gas 6, a modification electrode 1, and an oxygen ion conductive solid electrolyte substrate 3 and the electrochemical reaction of H2 is suppressed. On the other hand, a modification electrode 2 covered with a combustible gas oxidizing catalyst 4 oxidizes CO and H2 which can not thereby reach the modification electrode 2. Consequently, an electromotive force appears between the electrodes 1, 2 and the value thereof is indicated by an indicating instrument 7.

22. 发明专利

JP2009295036A Fire decision device and fire alarm 有权
标题翻译：消防决策设备和消防报警
公开(公告)号：JP2009295036A
公开(公告)日：2009-12-17
申请号：JP2008149767
申请日：2008-06-06
申请人： Tokyo Gas Co Ltd , Yazaki Corp , 東京瓦斯株式会社 , 矢崎総業株式会社
发明人： NISHITANI MICHIYUKI , TAKASHIMA HIROMASA , NAKAWA YOSHIHARU , INUZUKA KAZUHIRO , MATSUI TAKUMI , HORIGOME HIRONORI , DOI TOSHIYUKI
IPC分类号： G08B17/10 , G08B17/00
摘要： PROBLEM TO BE SOLVED: To provide a fire decision device which effectively determines a fire with low power consumption, and a fire alarm using the fire decision device.
SOLUTION: The fire decision device includes a smoke sensor 4, a CO sensor 3, a calculation means 2 of calculating a smoke density gradient Gs, a smoke density difference maximum value |d|max, and a CO density gradient Gco, and an elapsed time measuring means 2 of measuring an elapsed time Ts until smoke density reaches first set smoke density and second set smoke density, and determines a fire on the basis of the smoke density gradient Gs, the smoke density difference maximum value |d|max, the elapsed time Ts, and the CO density gradient Gco. Further, the fire decision device includes a detection timing change means of changes first detection timing to second detection timing having an interval longer than that of the first detection timing while smoke density detected by the smoke sensor is between the first set smoke density and the second set smoke density.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种有效地确定低功耗的火灾的火灾判定装置和使用该消防决定装置的火灾报警器。火灾判定装置包括烟雾传感器4，CO传感器3，计算烟浓度梯度Gs，烟密度差最大值¾d¾max和CO浓度梯度Gco的计算装置2，经过时间测量装置2，用于测量烟浓度达到第一设定烟浓度和第二设定烟浓度之前的经过时间Ts，并且基于烟密度梯度Gs，烟密度差最大值¾d¾max，经过时间Ts ，CO密度梯度Gco。此外，火情决定装置包括检测定时改变装置，其将第一检测定时改变为具有比第一检测定时的间隔更长的间隔的第二检测定时，而由烟传感器检测的烟浓度在第一设定烟浓度和第二检测定时之间设置烟密度。版权所有（C）2010，JPO＆INPIT

23. 发明专利

JP2002048747A CARBON MONOXIDE SENSOR COMPOSITE ELEMENT, CARBON MONOXIDE CONCENTRATION METER, AND CARBON MONOXIDE SENSOR 失效
公开(公告)号：JP2002048747A
公开(公告)日：2002-02-15
申请号：JP2000205538
申请日：2000-07-06
申请人： TOKYO GAS CO LTD , YAZAKI CORP
发明人： NAKAMURA KENICHI , TANDA RYOJI , MOCHIZUKI KAZU , TAKASHIMA HIROMASA
IPC分类号： G01N27/409 , G01N27/12 , G01N27/16 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To provide a carbon monoxide sensor element allowed to be miniaturized and to perform accurate measurement over a wide concentration range from a low concentration to a high concentration. SOLUTION: This carbon monoxide sensor composite element is provided with a solid electrolyte type sensor element part and a contact combustion type sensor detection part.

24. 发明专利

JP2001014568A GAS AND FIRE ALARM DEVICE 失效
公开(公告)号：JP2001014568A
公开(公告)日：2001-01-19
申请号：JP18689999
申请日：1999-06-30
申请人： YAZAKI CORP , TOKYO GAS CO LTD , HOCHIKI CO
发明人： TAKASHIMA HIROMASA , TOYODA KAZUO , HONJO TAEKO , HAYAMA MAKOTO
IPC分类号： G08B21/00 , G01N27/00 , G01N27/12 , G08B17/00 , G08B21/16
摘要： PROBLEM TO BE SOLVED: To provide a gas and fire alarm device which can output a gas detection signal and a fire detection signal to an external output device, is also electrically insulated from the external output device, and consists of a simple and inexpensive circuit configuration. SOLUTION: An electromagnetic relay 15 is electrically insulated from a control circuit 50 having a gas sensor 1, a fire sensor 10, an LED 21 and a speaker 19, and outputs a fire detection signal detected by the sensor 10 as a voltage-nonimpresses signal to an external output device. 1st and 2nd photocouplers PC1 and PC2 electrically insulate a voltage-impressed circuit 60 from the circuit 50, and output a gas detection signal detected by the sensor 1. The circuit 60 generates voltage-impressed signals (6 V without gas leakage and 12 V with gas leakage) on the basis of the gas detection signal detected by the sensor 1 and outputs the voltage-impressed signals to the external output device.

25. 发明专利

JP2000329731A SOLID-ELECTROLYTE-TYPE CO SENSOR 失效
公开(公告)号：JP2000329731A
公开(公告)日：2000-11-30
申请号：JP13817299
申请日：1999-05-19
申请人： TOKYO GAS CO LTD , YAZAKI CORP
发明人： NAKAMURA KENICHI , TANDA RYOJI , MOCHIZUKI KAZU , TAKASHIMA HIROMASA
IPC分类号： G01N27/409 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To simplify a detection circuit and to extremely reduce manufacturing costs in a CO sensor where CO detection sensitivity is sharper than H2 detection sensitivity. SOLUTION: In the solid-electrolyte-type CO sensor where a pair of electrodes 2 and 3 is formed on both sides of an oxygen ion conductive solid electrolyte film 1 in adhesion, one of the pair of electrodes 2 and 3 is covered with a flammable gas oxidation catalysis layer 4, and a heater 6 is arranged on the flammable gas oxidation catalysis layer 4, the oxygen ion conductive solid electrolyte film 1 is composed by zirconia (ZrO2) being stabilized by yttria (Y2O3) and is formed to a film pressure of 15 μm or less by screen printing.

26. 发明专利

JP2000009688A CARBON MONOXIDE SENSOR 失效
公开(公告)号：JP2000009688A
公开(公告)日：2000-01-14
申请号：JP11456199
申请日：1999-04-22
申请人： TOKYO GAS CO LTD , YAZAKI CORP
发明人： NAKAMURA KENICHI , TANDA RYOJI , MOCHIZUKI KAZU , TAKASHIMA HIROMASA
IPC分类号： G01N27/409 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To eliminate faults and detect a concentration of carbon monoxide correctly by forming a structure so that only a gas to be detected which passes a toxication prevention gas layer comes in touch with a sensor element of a solid electrolyte type. SOLUTION: A toxication prevention gas layer can be formed of activated carbon. However, a sensor sensitivity sometimes deteriorates depending on a state of a layer of activated carbon when the gas layer is formed of the activated carbon. For preventing the sensitivity deterioration and obtaining a sufficient toxication preventive gas characteristic, supposing that a thickness of the activated carbon layer is X mm and a packing density of the activated carbon layer is Yg/cm2, the X and Y are set to satisfy 1.1

27. 发明专利

JP2009295025A Fire decision device and fire alarm 有权
标题翻译：消防决策设备和消防报警
公开(公告)号：JP2009295025A
公开(公告)日：2009-12-17
申请号：JP2008149629
申请日：2008-06-06
申请人： Tokyo Gas Co Ltd , Yazaki Corp , 東京瓦斯株式会社 , 矢崎総業株式会社
发明人： NISHITANI MICHIYUKI , TAKASHIMA HIROMASA , NAKAWA YOSHIHARU , MATSUI TAKUMI , HORIGOME HIRONORI , DOI TOSHIYUKI
IPC分类号： G08B17/00 , G08B17/107 , G08B17/117
摘要： PROBLEM TO BE SOLVED: To provide a fire decision device and a fire alarm that effectively determines a fire especially with improved accuracy.
SOLUTION: The fire decision device includes a smoke sensor 4, a CO sensor 3, a calculation means 2 of calculating a smoke density gradient Gs, a smoke density difference maximum value |d|max, and a CO density gradient Gco, and an elapsed time measuring means 2 of measuring an elapsed time Ts until smoke density reaches first set smoke density and second set smoke density, and determines a fire on the basis of the smoke density gradient Gs, the smoke density difference maximum value |d|max, the elapsed time Ts, and the CO density gradient Gco. Further, when the CO density is higher than CO alarm density after the decision is made that no fire has occurred, the decision is made again that a fire has occurred.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种有效地确定火灾的火灾判定装置和火灾报警器，特别是在提高精度的情况下。火灾判定装置包括烟雾传感器4，CO传感器3，计算烟浓度梯度Gs，烟密度差最大值¾d¾max和CO浓度梯度Gco的计算装置2，经过时间测量装置2，用于测量烟浓度达到第一设定烟浓度和第二设定烟浓度之前的经过时间Ts，并且基于烟密度梯度Gs，烟密度差最大值¾d¾max，经过时间Ts ，CO密度梯度Gco。此外，当决定了没有发生火灾的CO密度高于CO报警密度时，再次决定发生火灾。版权所有（C）2010，JPO＆INPIT

28. 发明专利

JP2002089839A GAS CUTOFF DEVICE 失效
公开(公告)号：JP2002089839A
公开(公告)日：2002-03-27
申请号：JP2000281674
申请日：2000-09-18
申请人： YAZAKI CORP , TOKYO GAS CO LTD
发明人： TAKASHIMA HIROMASA , KATSUBE IZUMI , KOSHIMIZU DAISUKE , YAHAGI MASAHIRO
IPC分类号： F16K31/06 , F23N5/00 , F23N5/24
摘要： PROBLEM TO BE SOLVED: To interrupt a gas supply source when it is decided that the concentration of CO gas in exhaust gas from a gas hot water supply device is abnormally high without specially treating an existing gas hot water supply device having no gas cutoff function and increasing a cost. SOLUTION: The gas interrupting device includes a CO detector 1 having a contact combustion type detecting element heated to detecting temperature to detect the CO gas and output a detecting signal in accordance with the concentration of the CO gas detected by the detecting element and a CO detector 2A having a cutoff signal output means for outputting a cutoff signal for cutting off the supply of gas to the gas hot water supply device 3A to the gas hot water supply device when it is decided that the concentration of the CO gas detected by the detecting element is a prescribed value or higher. The gas hot water supply device 3A is provided with a demagnetizing means 5a for demagnetizing and closing a solenoid valve for supplying gas in accordance with the cutoff signal.

29. 发明专利

JP2001235441A GAS ALARM AND GAS ALARMING METHOD 失效
公开(公告)号：JP2001235441A
公开(公告)日：2001-08-31
申请号：JP2000044701
申请日：2000-02-22
申请人： YAZAKI CORP , TOKYO GAS CO LTD
发明人： TAKASHIMA HIROMASA , TOYODA KAZUO , NAKAE HIROSHI , HONJO TAEKO
IPC分类号： G08B21/16 , G01N27/12 , G01N27/16 , G08B29/04
摘要： PROBLEM TO BE SOLVED: To provide a gas alarm and a gas alarming method which enable accurate judgment of the trouble of a gas sensor by allowing the detection of the trouble of the gas sensor and further obtaining a stable output. SOLUTION: The gas alarm is provided with a heater 2 and a gas sensor 1 having a sensing part 3 for detecting the concentration of a gas and lets a heater current flow to a heater 2 to heat the sensing part 3 and emits an alarm indicating the abnormality of the concentration thereof when the concentration of the gas detected by the sensing part 3 exceeds an alarming point. A current detection resistance Rd is connected in series to the heater 2, a sensor abnormality judging circuit 18 inputs an end-to-end voltage of the current detection resistance Rd to calculate the heater current based on the end-to-end voltage and the current detection resistance Rd and judges the abnormality of the gas sensor 1 based on changes in the heater current thus calculated. A display circuit 25 emits an alarm indicating the abnormality of the gas sensor 1 when the gas sensor 1 is determined to be abnormal.

30. 发明专利

JP2001194330A GAS ALARM UNIT AND GAS ALARMING METHOD 失效
公开(公告)号：JP2001194330A
公开(公告)日：2001-07-19
申请号：JP2000004894
申请日：2000-01-13
申请人： YAZAKI CORP , TOKYO GAS CO LTD , FIS KK
发明人： TAKASHIMA HIROMASA , OMURA AKIRA , NAGATA SATOSHI , NAKAE HIROSHI , HONJO TAEKO , MATSUMOTO SHINICHI , OKINAGA KAZUO
IPC分类号： G08B21/14 , G01N27/00 , G01N27/12 , G08B23/00
摘要： PROBLEM TO BE SOLVED: To provide a gas alarm unit and a gas alarming method capable of beforehand detecting/reporting deterioration of a gas sensor in sensitivity in the event that the gas sensor is driven by a battery with limited capacity. SOLUTION: In this gas alarm unit, the gas sensor 1 is on-off driven with a specified period by a pulse drive signal generated by a sensor drive circuit 13 receiving a power supply voltage of the battery 5, the concentration of carbon monoxide is detected during off-drive periods of the sensor 1, and an alarm is given to indicate an abnormal concentration of carbon monoxide when a detected concentration of carbon monoxide exceeds an alarm point. A sensor detection circuit 9 detects the value of sensor resistance of a sensor element 3 during an on-drive period in each of the periods. A sensor abnormality judging circuit 16 judges whether the sensor 1 is abnormal based on variations in a plurality of detected values of sensor resistance. An LED 21 gives an alarm indicating the abnormality of the sensor 1 when the sensor 1 is judged to be abnormal.

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