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1. 发明专利

JPH10115541A CONTROLLER FOR SHUTOFF VALVE FOR GAS METER 失效
公开(公告)号：JPH10115541A
公开(公告)日：1998-05-06
申请号：JP27245896
申请日：1996-10-15
申请人： TOKYO GAS CO LTD
发明人： SAKAI KATSUTO , KANEKO ISAO
IPC分类号： G01F1/00 , G01F3/22 , G05D7/06
摘要： PROBLEM TO BE SOLVED: To obtain a controller by which a battery is not consumed unnecessarily even when a shutoff valve is operated so as to be opened after the shutoff valve has been set to a shutoff state due to the abnormality of a microcomputer used to realize a safety function and by which the shutoff valve can be set to the shutoff state again. SOLUTION: A constant-time-interval generation circuit 46 outputs a shutoff signal Sshut at constant time intervals when a CPU abnormality signal SWDT is input from a monitoring circuit 45 which detects the abnormality of a microcomputer 40. A return-button-operation detection circuit 31 outputs a detection signal Sopen when the CPU abnormality signal SWDT is input and when a return button is pressed after a shutoff valve 20 has been set to a shutoff state. An output holding circuit 47 holds the detection signal Sopen so as to be output as an operation detection signal Sopen '. An AND gate 48 ANDs the shutoff signal Sshut and the operation detection signal Sopen ' so as to output a shutoff instruction signal AAND to a shutoff-valve control circuit 44.

2. 发明专利

JPH10115422A GAS SHUTOFF DEVICE 失效
公开(公告)号：JPH10115422A
公开(公告)日：1998-05-06
申请号：JP27049496
申请日：1996-10-14
申请人： MATSUSHITA ELECTRIC IND CO LTD , TOKYO GAS CO LTD
发明人： OTANI TAKAHISA , NAWATA TAKASHI , YOSHIDA MIHO , SHIRASAWA TADANORI , NUKUI KAZUMITSU , KANEKO ISAO , FUJISAWA KAZUYA
IPC分类号： F23N5/24
摘要： PROBLEM TO BE SOLVED: To provide a gas shutoff device capable of detecting a gas leakage whose flow rate is identical to the flow rate of a pilot light even when a registered flow rate of a pilot light is changed by the replacement of a gas apparatus or the like. SOLUTION: A pilot light flow rate determinant section 3 compares a measured gas flow rate value A with a pilot light flow rate holding value which is a registered pilot light flow rate value and outputs a non-identical signal D when they are not the same and an identical signal E when they are the same. When the input of the non-identical signal D is continued for a specified time, an alarm annunciation section executes alarm information. When a specified time has elapsed from the input of the same signal E, a pilot light flow rate erasure determinant section 6 outputs a pilot light flow rate registered deletion signal F to a pilot light flow rate holding section 4, thereby eliminating the pilot light flow rate holding value C.

3. 发明专利

JPH09318414A DEVICE FOR ESTIMATING PIPING CAPACITY 失效
公开(公告)号：JPH09318414A
公开(公告)日：1997-12-12
申请号：JP14019796
申请日：1996-06-03
申请人： MATSUSHITA ELECTRIC IND CO LTD , TOKYO GAS CO LTD
发明人： MATSUMOTO TAKAYUKI , MURAKAMI HIROKUNI , OKAMATSU HIROSUMI , NUKUI KAZUMITSU , KANEKO ISAO , FUJISAWA KAZUYA
IPC分类号： G01F3/22 , G01F17/00 , G01F22/02 , G01L7/00
摘要： PROBLEM TO BE SOLVED: To estimate the gas piping capacity by simple method and at a short time when a gas meter is installed. SOLUTION: This device is provided with a pressure measuring part 11 for measuring a pressure within a downstream-side piping 3 arranged between the gas meter and gas device, a vibration amplitude calculation part 12 for calculating according to signals from the part 11 the vibrating amplitude of a pressure generating at the time when a gas is charged into a piping, and a capacity judging part 13 for estimating the capacity of the piping based on the vibrating amplitude outputting from the part 12, and it measures the pressure value of pressure vibration generating at the time when a gas is charged, and calculates the amplitude, then it estimates a gas piping capacity according to the obtained pressure vibrating amplitude.

4. 发明专利

JPH09264447A GAS CUTOFF DEVICE 失效
公开(公告)号：JPH09264447A
公开(公告)日：1997-10-07
申请号：JP7157596
申请日：1996-03-27
申请人： TOKYO GAS CO LTD , MATSUSHITA ELECTRIC IND CO LTD
发明人： OKAMATSU HIROSUMI , MURAKAMI HIROKUNI , UBUKAWA TOYOMIZU , OTANI TAKAHISA , NUKUI KAZUMITSU , KANEKO ISAO , FUJISAWA KAZUYA , SATOU SOUBUN
IPC分类号： F16K37/00 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To eliminate the effect of a transient noise or the like and prevent the occurrence of erroneous judgement by applying the constitution that an input port judgement part inspects voltage, upon receipt of a port judgement normal signal, the abnormality of a circuit is judged when the voltage is equal to or below the preset level and, then, the circuit abnormality is reported. SOLUTION: An input port judgement part 5, upon receipt of an output signal from a periodic timer part 1 to periodically output a voltage inspection signal A, judges the status of an input port and outputs a port judgement normal signal D and a port judgement abnormality signal E. A voltage detection part 2, upon receipt of the port judgement normal signal D, inspects voltage. Then, the voltage detection part 2 outputs a voltage drop signal B, when the voltage is equal to or lower than the preset value, and a voltage normal signal C when the voltage is abnormal. Also, a circuit abnormality judgement part 6, upon receipt of the port judgement abnormality signal E, identifies a circuit abnormality and outputs a circuit abnormality reporting signal F. In this way, the input port judgement part 5 judges the status of the input port to read a judgement signal for voltage inspection, before implementing the inspection, thereby avoiding judgement about a voltage drop in the case of an abnormality.

5. 发明专利

JPH08219844A GAS METER 失效
公开(公告)号：JPH08219844A
公开(公告)日：1996-08-30
申请号：JP4919395
申请日：1995-02-14
申请人： TOKYO GAS CO LTD
发明人： OTANI TSUTOMU , KANEKO ISAO , FUJISAWA KAZUYA
IPC分类号： G01F1/00 , G01F3/22 , G08B21/00 , G08B21/16
摘要： PURPOSE: To distinguish among gas leak, continuous use of a pilot flame, and the intermittent operation of a gas hot water heating unit easily and in a short time so as to prevent the occurrence of a false alarm. CONSTITUTION: A gas leak possibility judgement means 33 judges whether gas leak possibility exists or not. When the gas leak possibility exists, first use state judgement means 34 judges whether the gas flow of a predetermined first flow (an amount during the intermittent stop time band of a gas hot water heating and cooling unit) or less is used or not. When the gas flow of the first flow or less is used, first gas leak judgement means 35 judges whether the gas leak exists or not. When the gas flow larger than the first gas flow is used, second use state judgement means 36 judges whether the gas flow larger than the predetermined flow of second flow larger than the first flow amount or less (a pilot flame amount) is used or not. When the gas flow amount of the second flow or less is used, second gas leak judgement means 37 judges whether the gas leak exists or not.

6. 发明专利

JPH08201127A GAS METER 失效
公开(公告)号：JPH08201127A
公开(公告)日：1996-08-09
申请号：JP3156495
申请日：1995-01-27
申请人： TOKYO GAS CO LTD
发明人： OTANI TSUTOMU , UEKI TAKASHI , NEGORO NOBUO , KANEKO ISAO , FUJISAWA KAZUYA
IPC分类号： G01F1/00 , F23N5/18 , F23N5/20 , G01F3/22
摘要： PURPOSE: To enable the curtailing of labor and time required for registering work by providing the function of learning a pilot flow rate to eliminate the need for registration using separate setters as in the past. CONSTITUTION: When a flow rate is used for a specified time to an extent of a pilot flow rate as such other than that registered currently (excluding zero flow rate), the flow rate is stored into a memory means 34. Then, an inspection is performed by an internal pipe leakage inspection means 33 to judge whether an internal pipe is normal or not (whether leakage occurs or not). When it is not normal (leakage occurs), the reporting to the effect is made by an alarm reporting means 35 and when it is normal (no leakage), after the returning of a gas passage breaking means 30 (two-way valve), the flow rate of a gas immediately before breaking by the gas passage breaking means 30 as stored into the memory means 34 is registered as pilot flow rate.

7. 发明专利

JPH08189853A GAS METER 失效
公开(公告)号：JPH08189853A
公开(公告)日：1996-07-23
申请号：JP1847495
申请日：1995-01-10
申请人： TOKYO GAS CO LTD
发明人： OTANI TSUTOMU , UEKI TAKASHI , NEGORO NOBUO , KANEKO ISAO , FUJISAWA KAZUYA
IPC分类号： G01F1/00 , G01F3/22 , G01F15/075 , G08C15/00
摘要： PURPOSE: To easily presume the cause of eventual abnormal service state or gas leakage. CONSTITUTION: A control part 40 of the gas meter comprises a CPU 41, ROM 42, RAM 43, nonvolatile memory 44, calander lock 45, and input/output port 46. With the input/output port 46, such components as an LCD driver 51 to drive LCD 14, flow meter 52, pressure sensor 53, seismic sensor 54, a drive circuit 56 to drive shutoff valve 55, a return button 13 for restitution of shutoff valve, etc., are connected. The nonvolatile memory 44 accommodates a gas use history table to store the gas use history and a condition table to store abnormal condition of gas, and information given by different sensor, etc., is therein recorded. The LCD 14 displays the information including the cumulated rate of gas flow, monthly consumption, the gas charge, etc., and also various pieces of information pertaining to abnormal conditions such as total max. rate-of-flow over, individual max. rate-of-flow over, micro-leakage, etc., and other information about the gas comsumative situation.

8. 发明专利

JPH08189851A GAS METER 失效
公开(公告)号：JPH08189851A
公开(公告)日：1996-07-23
申请号：JP1847195
申请日：1995-01-10
申请人： TOKYO GAS CO LTD
发明人： OTANI TSUTOMU , UEKI TAKASHI , NEGORO NOBUO , KANEKO ISAO , FUJISAWA KAZUYA
IPC分类号： G01F1/00 , F23N5/18 , G01F3/22
摘要： PURPOSE: To quickly perform leak inspection of gas in a minute rate of flow and enhance the safe shutting function for gas by furnishing a judging means to judge as to whether gas leak exists or not on the basis of the size of the rate of gas pressure change. CONSTITUTION: A gas flow-path shutting means 31 shuts a gas flow-path in accordance with the result from sensing made by a gas flow sensing means 30 and is restituted electrically. A memory means 33 stores the change rate of gas pressure sensed by a gas pressure sensing means 32 corresponding to the size of the obtained change rate upon dividing into a plurality of stages. After restitution of the shutting means 31, a judging means 34 determines the rate of pressure change on the basis of the sensing result of the means 30 and performs discrimination to know in which area of the pressure change rate stored in the memory means 33 the obtained rate of pressure change lies. When the rate of pressure change is greater than a predetermined reference value, judgment as 'no gas leak' is decided, and when the rate lies within the reference value, a judgment as 'gas leak' is decided. A restituting means 35 restitutes the shutting means 31 in the former case.

9. 发明专利

JPH08189850A GAS METER 失效
公开(公告)号：JPH08189850A
公开(公告)日：1996-07-23
申请号：JP1847095
申请日：1995-01-10
申请人： TOKYO GAS CO LTD
发明人： OTANI TSUTOMU , UEKI TAKASHI , NEGORO NOBUO , KANEKO ISAO , FUJISAWA KAZUYA
IPC分类号： G01F1/00 , F23N5/18 , G01F3/22
摘要： PURPOSE: To judge as to whether gas is leaking or not in a short time by judging the size of the change rate of the rate of flow after restitution of a flow-path shutting means and comparing the value of pressure change in the inspection time for a duration corresponding to the size of the change rate of the rate of flow with its reference value. CONSTITUTION: The flow-path is shut by a flow-path shutting means 31 in accordance with the result from sensing made by a gas flow sensing means 30, and after the restoring works, the shutting means 31 is restituted by a restitutional shutting means 32. In this state, the change in the rate of flow in the gas flow-path is sensed by the sensing means 30, and a judging means 33 monitors the result from sensing and calculates the change rate of the rate of flow, followed by large/small discrimination of the change rate. The inspection time in a duration counter-proportional to the obtained large/small result is set for each case. The value of the change in the rate of flow is compared with its reference value, and if the result lies within the reference value in duration for a specified inspection time, a judgment as 'no gas leak' is decided, and the restituted condition of the shutting means 31 is maintained. In the case where the value of change is over the reference value, judgment as 'gas leak' is decided and the flow-path is shut by the means 31.

10. 发明专利

JPH0898753A TABLEWARE WARMING APPARATUS 失效
公开(公告)号：JPH0898753A
公开(公告)日：1996-04-16
申请号：JP25933594
申请日：1994-09-29
申请人： TOKYO GAS CO LTD
发明人： TANAKA TAKASHI , FURUKAWA HIDEKI , KANEKO ISAO , SUZUKI KIWAMU , FUJISAWA KAZUYA , MASUKO TOKUSHIGE , NAKAYAMA KANAKO , KOMAKI MICHINORI , MORITA SATORU
IPC分类号： A47G19/20 , A47G23/00
摘要： PURPOSE: To always simply hold tableware to a proper temp. without requiring labor for taking out tableware from warm water at the time of use to wipe off moisture by combining a tableware housing device and the reserving means thereof. CONSTITUTION: Cup stands 3 for supporting a plurality of tablewares such as cups 15, for example, coffee cups in order to warm them are provided to a tableware warming apparatus 1 side by side. A hot water supply pipe 7 is arranged in each of the cup stands 3 and a hot water supply device 5 is connected to the hot water supply pipe 7 to supply warm water. A solenoid valve 13 is arranged on the way of the hot water supply pipe 7 and the circulation of warm water is executed or stopped accompanied by the opening and closing of the valve 13. Further, a temp. sensor 9 is arranged to the tip of each cup stand 3 and the detection temp. thereof is transmitted to a controller 11. The controller 11 controls the opening and closing of the solenoid valve 13 on the basis of the detection temp.. By this constitution, the cups 15 are always held to a proper temp. by controlling the circulation of warm water.

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