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1. 发明专利

JPH06123645A FLUIDIC GAS SHUTTING APPARATUS 失效
公开(公告)号：JPH06123645A
公开(公告)日：1994-05-06
申请号：JP27126492
申请日：1992-10-09
申请人： MATSUSHITA ELECTRIC IND CO LTD , TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK
发明人： UEKI KOICHI , TAKEMURA KOICHI , UEKI TAKASHI , SAKAI KATSUTO , OKAMURA SHIGENORI , SATO YASUO , KIMURA YUKIO
IPC分类号： G01F1/20
摘要： PURPOSE:To measure the flow rate of a fluid with a single sensor without being influenced by the temperature of the fluid, by automatically adjusting the width of a jetting nozzle of a fluidic oscillator element to be an optimum value in accordance with the oscillating frequency. CONSTITUTION:The width of a jet flow of a fluidic oscillator element 2 is set at a default value beforehand. When a gas is started to be used, the element 25 oscillates the fluid by the Coanda effect. The oscillating frequency of the fluid is detected at 26. A width controlling means 27 detects whether the oscillating frequency is not smaller than a predetermined value. If the frequency is not smaller than a predetermined value, a width variable means 28 is urged, so that the width of a jetting nozzle of the element 25 is automatically varied. At the same time, the position of the variable means 28 is detected at 27b. When the position becomes a set value, the variable means 28 is stopped to be moved and held at the position. The flow rate is obtained at 29 from the detected oscillating frequency at 26, and an integrated value of the flow rate of the used gas is obtained by an integrated flow rate operating means 30. A judging means 31 judges the using state of the gas from the flow rate and the integrated flow rate. If the using state is abnormal, the judging means 31 activates a shutting means 33, thereby, to stop the supply of gas.

2. 发明专利

JPH06123646A FLUIDIC GAS SHUTTING APPARATUS 失效
公开(公告)号：JPH06123646A
公开(公告)日：1994-05-06
申请号：JP27126592
申请日：1992-10-09
申请人： MATSUSHITA ELECTRIC IND CO LTD , TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK
发明人： TAKEMURA KOICHI , UEKI KOICHI , UEKI TAKASHI , SAKAI KATSUTO , OKAMURA SHIGENORI , SATO YASUO , KIMURA YUKIO
IPC分类号： G01F1/20 , G01F3/22 , G01F7/00
摘要： PURPOSE:To automatically and easily adjust the width of a nozzle corresponding to the size number by setting the size number in accordance with the using amount of a fluid and driving a jetting nozzle width variable means by the amount set at a size number setting means. CONSTITUTION:If the size number is set by a size number setting means 10 from the using purpose or using flow rate of gas, a jetting nozzle width controlling means 12 generates a driving signal to a width variable means 11. As a result, the width variable means 11 is driven, and also the position of the variable means 11 is detected. When the variable means 11 reaches a set value of the size number, it is stopped to be driven. In the case where the variable driving means is constituted of a piezoelectric driving element, a driving voltage is added by the controlling means 12, thereby a variable nozzle means is moved to the left or right through the mechanical shift (in a direction to narrow the width of the jetting nozzle if the size number is small). If the variable nozzle means is formed with a shape memory alloy, the variable driving means becomes a heating means and changes the heating amount corresponding to the set value of the size number. Accordingly, since the variable nozzle means is expanded or contracted, the width of the jetting nozzle is adjusted to be optimum corresponding to the size number.

3. 发明专利

JP2003194331A GAS APPARATUS EVALUATION UNIT AND GAS METER HAVING GAS APPARATUS EVALUATION FUNCTION 审中-公开
公开(公告)号：JP2003194331A
公开(公告)日：2003-07-09
申请号：JP2001398078
申请日：2001-12-27
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK
发明人： KOTAKANE KAZUTO , FUJIMOTO TATSUO , SAKAI KATSUTO , YUASA KENICHIRO , MATSUSHITA HIROSHI , OKADA SHUICHI , TAGAWA SHIGERU , KADOWAKI ATSUKO , KIMURA YUKIO , HIROYAMA TORU
IPC分类号： G01F1/00 , F23N5/18 , F23N5/24 , G01F3/22 , G08B21/24
摘要： PROBLEM TO BE SOLVED: To provide a gas apparatus evaluation unit for deciding on the apparatus to deal with a gas flow change with at least one apparatus in operation and on the apparatuses to deal with gas flow changes with a plurality of gas apparatuses in operation. SOLUTION: The unit has: a flow pattern table wherein a series of gas flow patterns to occur following combustion control of a plurality of gas apparatus types are divided into partial flow patterns which are then classified for each control step; an apparatus table wherein gas apparatuses are combined with partial flow patterns corresponding to them; and an apparatus evaluation means. The apparatus evaluation means extracts, out of the flow pattern table, a gas flow pattern matching a gas flow pattern accompanying a prescribed flow increase detected with at least one gas apparatus in operation or a partial flow pattern matching a gas flow pattern accompanying a prescribed flow increase detected with a plurality of gas apparatuses in operation, and also extracts, out of the apparatus table, a gas apparatus in operation, or with its operation just started, with its pattern which matches the extracted partial flow pattern. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2002350200A FLOW RATE-MEASURING INSTRUMENT, GAS METER, AND FLOW RATE-READING APPARATUS 失效
公开(公告)号：JP2002350200A
公开(公告)日：2002-12-04
申请号：JP2001154234
申请日：2001-05-23
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , AICHI TOKEI DENKI KK
发明人： NUKUI KAZUMITSU , SAKAI KATSUTO , SATO SHINICHI , OKADA SHUICHI , KIMURA YUKIO , SATO TAKAHITO , HORI ITSURO , OHASHI MASAKI
IPC分类号： G01F1/00 , G01F3/22 , G01F15/06
摘要： PROBLEM TO BE SOLVED: To provide a flow rate-measuring instrument and a gas meter for surely and quickly performing inspection at a low flow-rate region and confirming the presence or absence of a small flow rate, and to provide a flow rate-reading apparatus for performing inspection and conformation automatically. SOLUTION: The flow rate-measuring instrument comprises a flow rate measurement section 10 for measuring the flow rate value of fluid, a flow rate value integration section 20 for integrating the integration value, a flow rate integration value display section 31 for displaying the flow rate integration value in numbers, and a flow rate blinking display section 32 for displaying a blinking figure corresponding to the change in a flow rate integration value in a smaller digit than the minimum digit of a numeric value being displayed by the flow rate value display section 31, thus displaying the change in the flow rate integration value at a low flow rate region, the presence or absence a small flow rate by blinking figures in single periods, and hence quickly and surely performing inspection or conforming the presence of a small flow rate.

5. 发明专利

JP2002303544A METHOD OF CALCULATING INITIAL VALUE OF PULSE CONSTANT OF FLUIDIC GAS METER, AND FLUIDIC GAS METER 失效
公开(公告)号：JP2002303544A
公开(公告)日：2002-10-18
申请号：JP2001107924
申请日：2001-04-06
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , AICHI TOKEI DENKI KK
发明人： NUKUI KAZUMITSU , SAKAI KATSUTO , SATO SHINICHI , OKADA SHUICHI , KIMURA YUKIO , SATO TAKAHITO , HORI ITSURO , OHASHI MASAKI
IPC分类号： G01F7/00 , G01F1/20 , G01F1/68
摘要： PROBLEM TO BE SOLVED: To calculate the pulse constant of a flow sensor when necessary even when the flow sensor is revised based on the value of flow rate measured by a fluidic oscillation element as the standard if the characteristic of the thermal flow sensor is changed due to the secular change, etc. SOLUTION: The correction coefficient r=Qn /QFS is calculated based on the FD flow rate Qn and the FS flow rate QFS at the time of calibration of the flow sensor. The pulse constant a is updated by a=r×a, and stored. The sensitivity change rate R is updated by r×R. After a few times of calibrations, the initial value a(o) of the pulse constant a is calculated by a(o)=a/R. The calculation is useful for the analysis of troubles.

6. 发明专利

JP2002107200A NONVOLATILE MEMORY CIRCUIT AND GAS METER 失效
公开(公告)号：JP2002107200A
公开(公告)日：2002-04-10
申请号：JP2000295803
申请日：2000-09-28
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , AICHI TOKEI DENKI KK
发明人： NUKUI KAZUMITSU , SAKAI KATSUTO , SATO SHINICHI , OKADA SHUICHI , KIMURA YUKIO , SATO TAKAHITO , HORI ITSURO , OHASHI MASAKI
IPC分类号： G01F3/22 , G01F1/20 , G01F1/68 , G01F7/00 , G06F11/22
摘要： PROBLEM TO BE SOLVED: To read data stored in an EEPROM in a state with the EEPROM being mounted on a circuit board as it is, and readily read the data of the EEPROM, even when an electronic circuit has broken down. SOLUTION: The writing to the EEPROM 1 is controlled with a microcomputer 2. Resistors 7, 8, 9, 10 are inserted in signal lines 3, 4, 5 6 which connect the microcomputer 2 with the EEPROM, and an external terminal 15 is installed. An external apparatus for check is connected with the external terminal 15. By turning the external terminal 15, which is connected with a CS terminal, into H level, writing of the data to the EEPROM 1 from the external apparatus and reading of the data stored in the EEPROM 1 from the external apparatus are enabled.

7. 发明专利

JPH10206204A THERMAL FLOW VELOCITY SENSOR 失效
公开(公告)号：JPH10206204A
公开(公告)日：1998-08-07
申请号：JP795197
申请日：1997-01-20
申请人： YAMATAKE HONEYWELL CO LTD , TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK
发明人： OISHI YASUHARU , NUKUI KAZUMITSU , SAKAI KATSUTO , KATO HIDEO , OKADA SHUICHI , KIMURA YUKIO
IPC分类号： G01P5/12 , G01F1/68 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To reduce a consumption current, shorten a sampling cycle and improve measurement accuracy, by setting sensor elements at the downstream and upstream sides of a fluid for detecting a change of a temperature distribution in accordance with a flow velocity of the fluid when a constant amount of heat is applied because of the generation of heat of the sensor elements. SOLUTION: At a sampling operation, sensor resistance elements 1 and 2 generate heat consequent to the supply of power. A temperature distribution of a sensor chip changes in accordance with a flow rate of a fluid. The heat of the resistance element 1 at the upstream side is taken, and the resistance element 2 at the downstream side is heated by an amount of heat generated by the resistance element 1 at the upstream side. As a result, a difference of resistance values is brought about between the resistance elements 1 and 2, causing imbalance to a bridge circuit 5. A resulting potential difference between points (a) and (b) is amplified by a differential amplifier 7 and output. An output of the differential amplifier 7 is converted to digital data and output through a sampling operation conducted by an A-D converter 8 immediately before a switch 6 is turned OFF.

8. 发明专利

JPH0915006A GAS FLOW METER 失效
公开(公告)号：JPH0915006A
公开(公告)日：1997-01-17
申请号：JP18334395
申请日：1995-06-26
申请人： TOHO GAS KK , TOKYO GAS CO LTD , OSAKA GAS CO LTD , YAMATAKE HONEYWELL CO LTD , TOYO GASMETER CO , AICHI TOKEI DENKI KK , KANSAI GASMETER KK , KIMMON MFG CO LTD , TAKENAKA SEISAKUSHO CO LTD
发明人： KIMURA YUKIO , SATO TAKAHITO , NUKUI KAZUMITSU , OKAMURA SHIGENORI , OISHI YASUHARU , HORI FUJIO , ITO TOSHIHIKO , NAMIMOTO MASANOBU , AOKI TOSHIAKI , IMAZAKI MASASHIGE , MATSUSHITA MASAHIKO
IPC分类号： G01F1/00 , G01F1/68 , G01F1/72 , G01F3/22 , G06F17/18
摘要： PURPOSE: To provide a gas flow meter of which measurement is not affected by the occurrence of pulsation of the flow of gas. CONSTITUTION: The gas flow meter comprises a flow sensor 28 that is attached to a gas pipeline and measures flow rate of a gas, a sampling program 25 that reads measurement values from the flow sensor 28 every specified first sampling time and converts them into digital values and a gas consumption amount calculation program 27 that calculates the consumption amount during a predetermined time period from the digital values read by the sampling program 25. It further comprises an average calculation program 26 that reads measurement values of the flow sensor 28 every second prescribed time in a prescribed measuring time at the first sampling time and converts them into digital values to calculate the average thereof.

9. 发明专利

JPH08159829A FLUIDIC FLOW METER 失效
公开(公告)号：JPH08159829A
公开(公告)日：1996-06-21
申请号：JP33067694
申请日：1994-12-06
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , AICHI TOKEI DENKI KK , KANSAI GASMETER KK , KIMMON MFG CO LTD , TAKENAKA SEISAKUSHO CO LTD , TOYO GASMETER CO
发明人： KIMURA YUKIO , SATO TAKAHITO , HORI FUJIO , NUKUI KAZUMITSU , OKAMURA SHIGENORI , SANNOMIYA SHIZUO , SHIBUYA TADAO , AOKI TOSHIAKI , IMAZAKI MASASHIGE , YAMADA KAZUHIRO
IPC分类号： G01F1/20
摘要： PURPOSE: To provide a fluidic flow meter capable of measuring flow amount accurately even when pressure fluctuation is generated on a gas being an object to be measured. CONSTITUTION: The fluidic flow meter is equipped with a first target 2 which is arranged downstream from a measuring nozzle 11 and divides a fluid right and left so as to generate pressure vibration in the fluid, a right differential pressure detection sensor 14 and a left differential pressure detection sensor 15 which measure the pressures of the divided flows by the first target sensor 12, and a flow amount computing means which computes flow amount from the pressure vibration frequency of the fluid measured by the right differential pressure detection sensor 14 and the like. The fluidic flow meter is further equipped with a front portion target 20 which is arranged between the measuring nozzle 11 and the first target 12 and is lower than the first target 12 in height.

10. 发明专利

JPH0875512A FLUIDIC FLOWMETER 失效
公开(公告)号：JPH0875512A
公开(公告)日：1996-03-22
申请号：JP24202994
申请日：1994-09-08
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , AICHI TOKEI DENKI KK , KANSAI GASMETER KK , KIMMON MFG CO LTD , TAKENAKA SEISAKUSHO CO LTD , TOYO GASMETER CO
发明人： KIMURA YUKIO , SATO TAKAHITO , MIZUKOSHI YASUSHI , NUKUI KAZUMITSU , OKAMURA SHIGENORI , KANDA KOICHI , NAMIMOTO MASANOBU , ISSHIKI HISASHI , KAMITE MINEYUKI
IPC分类号： G01F1/20 , G01F1/72 , G01F7/00
摘要： PURPOSE: To measure the flow rate while suppressing the error even upon pulsation of a fluid by determining the areas at the inlets of a bypass channel and a measuring nozzle such that the frequency of pressure oscillation of the fluid does not equal to integer times of pulsation frequency or a fraction of an integer thereof. CONSTITUTION: A fluid flowing into a flowmeter body 19 is shunted through a partition plate 35 and a regain mesh 29 to a bypath 36, a flowmeter section 37, and a flow sensor inlet 38. Pressure oscillation is measured based on the differential pressure of the fluid flowing into a flow rate measuring section 37 between the opposite sides of the outlet of a measuring nozzle 11 and then the frequency is analyzed thus determining the current velocity. The ratio between the area of a bypath 20 and the inlet area of the nozzle 11 is determined such that the frequency of pressure oscillation does not equal to inter times or a fraction of an integer of the frequency 6-21Hz of pulsation generated in a gas engine heat pump disposed in the upstream of the body 19. For example, the width W2 of the inlet 20 having height H2 of 9 mm is set at 30, 18 and 11.5mm for the nozzle 11 having inlet width W1 and height H2 of 22mm.

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