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1. 发明专利

JP2000030165A ALARM UNIT 失效
公开(公告)号：JP2000030165A
公开(公告)日：2000-01-28
申请号：JP20854398
申请日：1998-07-09
申请人： TOKYO GAS CO LTD , YAZAKI CORP , HOCHIKI CO
发明人： NISHINO MITSUSHIGE , NAKAE HIROSHI , HONJO TAEKO , FUJIMOTO TATSUO , KOSHIBA YUKIO
IPC分类号： G01N27/12 , G01N27/00 , G08B17/00 , G08B17/06 , G08B17/10 , G08B21/00 , G08B21/16 , G08B25/00 , G08B29/02
摘要： PROBLEM TO BE SOLVED: To provide an alarm unit by which a gas alarm unit is integrally formed with a fire alarm unit, the signals of a gas sensor and a fire sensor are integrated and processed and an erroneous report is reduced. SOLUTION: This alarm unit is provided with four sensors, that is, a thermosensitive sensor 11, a smoke sensor 13, a CO sensor 15 and a hydrocarbon sensor 17. The signals of the respective sensors are transmitted to a judging part 21 which is constituted of a microcomputer or the like. The judging part 21 processes the signals of the respective sensors, judges a fire, a gas leakage and incomplete combustion or the like and displays the result in a voice alarm part 23 or a liquid crystal display part 25.

2. 发明专利

JPH01219416A DUAL SHUT-OFF VALVE MECHANISM IN GAS COMBUSTION DEVICE 失效
公开(公告)号：JPH01219416A
公开(公告)日：1989-09-01
申请号：JP4349288
申请日：1988-02-26
申请人： TOKYO GAS CO LTD
发明人： KOSHIBA YUKIO , MOCHIZUKI JUNICHI
IPC分类号： F23N5/24
摘要： PURPOSE:To easily perform the detection of leakage without prepurge every ignition by connecting a pressure detecting means and a pressure increasing means capable of pressurization higher than gas supply pressure between shut-off valves in upstream side and downstream side of the gas supply pipe and reversely joining the primary side and the secondary side of upstream side shut-off valves each other. CONSTITUTION:In the case where shut-off valves 3a, 3b are closed and a burner 6 is extinguished, a pressure increasing means 4 is actuated and the space between the shut-off valves 3a, 3b is pressurized up to the prescribed pressure higher than gas supply pressure. When at this time leakage is produced from the shut-off valves 3a, 3b, the pressure in the space 7 is gradually decreased as time passes. Therefore, existence of leakage of the shut-off valves 3a, 3b can be found by detecting the change of the pressure in the space 7 by a pressure detecting means 5. The mechanism is formed without performing ignition operation if leakage is detected. Thus, prepurge in a furnace 8 need not be performed every ignition during temperature regulation and the like. Here, since the primary side (p) and the secondary side (s) of the shut-off valve 3a are reversely connected each other and pressure difference between the pressure in the space 7 and the gas supply pressure is positively applied on the shut-off valve 3a, only leakage can surely be detected.

3. 发明专利

JPH01147215A LEAK INSPECTION FOR DOUBLE ISOLATION VALVE IN GAS COMBUSTION EQUIPMENT 失效
公开(公告)号：JPH01147215A
公开(公告)日：1989-06-08
申请号：JP30715687
申请日：1987-12-04
申请人： TOKYO GAS CO LTD
发明人： KOSHIBA YUKIO , MOCHIZUKI JUNICHI , SHIYOUDOU HITOSHI
IPC分类号： F23N5/18 , F23N5/20 , F23N5/24
摘要： PURPOSE:To make it possible to perform, for sure at all times the inspection of an isolation valve for the leak in it by performing setting of pressure setting means after a specified time has passed from the motion of closing the isolation valve. CONSTITUTION:The setting for a pressure setting device 2 which is provided between isolation valves 1a and 1b on the upstream side and downstream side respectively is performed after a specified time length has passed from closing the isolation valves 1a and 1b. When the fire of a burner 5 is to be extinguished, the isolation valves 1a and 1b are closed, and then after a specified time length has passed, the pressure setting device 2 is operated and the pressure in the space 4 between the isolation valves 1a and 1b is set at pressure which is different from the pressure in supplying gas. When there is a gas leak in either of the valves 1a and 1b, the gas pressure in the space 4 rises or falls with the elapse of time. Accordingly, by detecting the pressure in the space 4 after a specified time has passed from operating the pressure setting device 2 by a pressure detection device 3, it is possible to detect the presence of leak in the isolation valves 1a and 1b by judging if there is a change of pressure more than specified.

4. 发明专利

JP2004005754A ALARM UNIT 审中-公开
公开(公告)号：JP2004005754A
公开(公告)日：2004-01-08
申请号：JP2003321696
申请日：2003-09-12
申请人： TOKYO GAS CO LTD , YAZAKI CORP , HOCHIKI CO
发明人： NISHINO MITSUSHIGE , NAKAE HIROSHI , HONJO TAEKO , FUJIMOTO TATSUO , KOSHIBA YUKIO
IPC分类号： G08B17/06 , G08B17/00 , G08B21/16
摘要： PROBLEM TO BE SOLVED: To reduce erroneous notification by integrating a gas alarm with a fire alarm to signal-process integrally signals from a gas sensor and a fire sensor. SOLUTION: This alarm is provided with the first sensor 17 for detecting a hydrocarbon gas concentration, the second sensor 15 for detecting a CO gas concentration, the third sensor 11 for sensing heat, a determination part 21 for determining gas leakage based on the hydrocarbon gas concentration, for determining incomplete combustion based on the CO concentration, and for determining generation of fire based on a sensed heat quantity and the CO gas concentration, by comparing the signal from the first sensor with at least one threshold value, by comparing the signal from the second sensor with a plurality of threshold values, and by comparing the signal from the third sensor with one threshold value, alarm parts 23, 25 for issuing alarm in response to a determined result in the determination part, and a casing for storing integrally the first-third sensors, the determination part and the alarm parts. COPYRIGHT: (C)2004,JPO

5. 发明专利

JPH10134271A OPERATION CONFIRMING METHOD FOR COMPOSITE TYPE ALARM BY SINGLE ALTERNATE GAS 失效
公开(公告)号：JPH10134271A
公开(公告)日：1998-05-22
申请号：JP28987396
申请日：1996-10-31
申请人： TOKYO GAS CO LTD
发明人： KOSHIBA YUKIO
IPC分类号： G01N27/00 , G01N27/04 , G08B19/00 , G08B21/00 , G08B21/16
摘要： PROBLEM TO BE SOLVED: To reduce labor for confirming operation to half by confirming the operation of a city gas sensor and a CO censor by single alternate gas (propane or butane). SOLUTION: At the time of pouring propane or butane to a city gas detecting part 1, the city gas sensor 7 operates and a judging circuit 10 makes a city gas alarm lamp 5 flicker, turns it out and simultaneously drives an alarming buzzer 11. Thereby it is known that the sensor 7 operates normally. Propane or butane is poured to a CO gas detecting part 2. At this time, the CO gas sensor 8 is heated by an electric heater 9 to execute the detection of propane or butane about for one minute and purging about one min and 30 sec at prescribed intervals and repeats this two to four times. The sensor 8 reacts to propane or butane during this and outputs a signal to a judging circuit 10, which flickers a CO alarming lamp 6 and turns it on and drives the buzzer 11. Thereby it is known that the sensor 8 operates normally.

6. 发明专利

JPH0312532A PRESSURE DETECTING DEVICE AND LEAK CHECKER USING THE SAME 失效
公开(公告)号：JPH0312532A
公开(公告)日：1991-01-21
申请号：JP14769689
申请日：1989-06-09
申请人： TAIMU GIKEN KK , TOKYO GAS CO LTD
发明人： MURAKAMI HIDEHIKO , YAMAMOTO YUJI , KOSHIBA YUKIO , SUGAWARA HIROSHI
IPC分类号： G01M3/26
摘要： PURPOSE:To obtain the pressure detecting device which can securely and easily detect whether or not there is a gas leak by providing an intake for introducing gas whose pressure is to be detected to a gas introducing chamber, a pressure sensor which varies its output when the pressure of the introduced gas reaches previously set pressure, etc. CONSTITUTION:The gas whose pressure is to be detected is charged in the gas introducing chamber 15 of the pressure detecting device 14 through the intake 16 for the gas to the previously set pressure and the capacity of the introducing chamber 15 is varied with a previously set driving force through the driving of the actuator 18 of a capacity varying device. Then the pressure in the introducing chamber 15 increases and the pressure sensor 17 outputs pressure variation corresponding to the capacity variation, thereby securely detecting the charged gas being in an airtight state without any leak. If there is a gas leak, the output of the pressure sensor 17 does not vary even when the capacity of the chamber 15 is varied, so the gas leak can be easily detected. Then this operation can be utilized effectively as a leak checker for gas by connecting the gas intake of the device to a gas supply path.

7. 发明专利

JP2000311284A SECURITY SYSTEM UTILIZING FIRE ALARM DEVICE AND GAS METER 失效
公开(公告)号：JP2000311284A
公开(公告)日：2000-11-07
申请号：JP2000045525
申请日：2000-02-23
申请人： TOKYO GAS CO LTD
发明人： NAKAE HIROSHI , YOKOYAMA MUTSUTO , KUMANO TOSHINOBU , TOGO SATOSHI , NISHINO MITSUSHIGE , HONJO TAEKO , FUJIMOTO TATSUO , KOSHIBA YUKIO
IPC分类号： G08B21/14 , G08B17/00 , G08B21/16 , G08B25/08 , G08B29/02 , H04M11/04
摘要： PROBLEM TO BE SOLVED: To obtain a security system which improves the detection accuracy of fire occurrence and can be connected to a quicker and appropriate security activity in accordance with a security level. SOLUTION: This security system has a gas meter 10 which is installed in a customer house and measures a flow rate, a fire alarm 22 installed in the customer house, a security device 30 which is connected to the gas meter and the fire alarm in a communicable way and installed at the customer house and a gas center 40 which is connected to the security device through a communication line and receives fire information and gas information from the security device. The center 40 receives the fire information and gas information collected by the device 30, and automatically notifies a fire station 42 from those information or performs quick and appropriate correspondence corresponding to a security level such as to call to the customer house to check absence and subsequently to perform automatic notification. Since the gas information and the fire information are collected to the gas center, for instance, the predictive capability of the so-called TEMPURA (deep batter fried food) fire being the highest cause of a fire can be improved and security activity such as more appropriate and quick dispatching of fire-fighting can be connected.

8. 发明专利

JP2000149169A WARNING DEVICE AND GAS UNIT HAVING SOUND WARNING FUNCTION 失效
公开(公告)号：JP2000149169A
公开(公告)日：2000-05-30
申请号：JP33501198
申请日：1998-11-11
申请人： TOKYO GAS CO LTD , YAZAKI CORP , HOCHIKI CO
发明人： NISHINO MITSUSHIGE , NAKAE HIROSHI , HONJO TAEKO , FUJIMOTO TATSUO , KOSHIBA YUKIO
IPC分类号： G08B23/00 , G01N27/00 , G08B17/00 , G08B21/00 , G08B21/16
摘要： PROBLEM TO BE SOLVED: To require only small storage capacity, to facilitate the addition and the change of a message and to improve extensibility and versatility. SOLUTION: A judgment part 2 judges whether the output signals of various sensors, which are inputted from a detection part 1, are in fire initial states or not based on respective references. A detection state code corresponding to the judged result is outputted. An output part 3 stores plural sound segments in a storage area designated by a sound segment address and stores the combination of the sound segments against the detection state code. When the detection state code is inputted from the judgment part 2, the combination of the sound segments against the detection state code is decided. The sound segment is read from the designated address and it is outputted by sound.

9. 发明专利

JPH10320680A ALARM SOUND TRIAL HEARING DEVICE 失效
公开(公告)号：JPH10320680A
公开(公告)日：1998-12-04
申请号：JP13089597
申请日：1997-05-21
申请人： TOKYO GAS CO LTD , NEW COSMOS ELECTRIC CO
发明人： KOSHIBA YUKIO , MATSUBARA YOSHIYUKI , HAYAKAWA MASAHIRO
IPC分类号： G08B3/10 , G08B23/00 , G08B29/12
摘要： PROBLEM TO BE SOLVED: To provide the alarm sound trial heating device which makes it possible to easy hear an alarm sound as a trial. SOLUTION: A circuit board 1 equipped with an alarm sound generating circuit 13 which generates an alarm sound and a switch part 11 for operating the alarm sound generating circuit 13 is put hermetically in a bag body 2 having a print surface outside. Then the device has an ON/OFF operation surface 21 which makes it possible to turn on and off the switch part 11 from outside the bag body 2 while the circuit board 1 is put in the bag body, and a display part for displaying the contents of the alarm sound is provided on the ON/OFF operation surface 21.

10. 发明专利

JPS6438514A LEAKAGE DETECTION MECHANISM OF DUAL CUT-OFF VALVE IN GAS COMBUSTION APPARATUS 失效
公开(公告)号：JPS6438514A
公开(公告)日：1989-02-08
申请号：JP19230687
申请日：1987-07-31
申请人： TOKYO GAS CO LTD
发明人： SAKURAI KOZO , KOSHIBA YUKIO , MOCHIZUKI JUNICHI
IPC分类号： F23N5/24 , F23K5/00
摘要： PURPOSE:To easily detect whether or not there is a leakage of the dual cut-off valve by connecting a pressure raising means capable of raising pressure higher than a gas supply pressure and a pressure detecting means between upstream and downstream cut-off valves. CONSTITUTION:Pressure raising means 2 and pressure detecting means 3 are connected between upstream and downstream cut-off valves 1a and 1b. When the fire of a burner 4 is extinguished, an actuator 12 is operated to raise the pressure within a space 5 by a diaphragm 11. Pressure detecting means 3 sets a value lower than the pressure at the time of raising the pressure by approximately 50mm H2O as a set pressure. When the pressure is higher than the set value, the pressure detecting means 3 is turned on, and when the pressure is lower than the set value, the pressure detecting means 3 is turned off. In the case of conducting the ignition of the burner 4, when the pressure detecting means is turned on, it is determined that there is no leakage of the gas from the dual cut-off valve, and a predetermined ignition of the burner 4, when the pressure detecting means is turned on, it is determined that there is no leakage of the gas from the dual cut-off valve, and a predetermined ignition is carried out. Further, when the pressure detecting means 3 does not conduct the ignition of the burner, a predetermined operation in the case of detecting the leakage of the gas from the valve.

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