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1. 发明专利

JPH0914655A COMBUSTOR EQUIPPED WITH CO DETECTION SENSOR 失效
公开(公告)号：JPH0914655A
公开(公告)日：1997-01-17
申请号：JP17941295
申请日：1995-06-22
申请人： GASTAR CORP , YAZAKI CORP , TOKYO GAS CO LTD
发明人： ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI , TAKESHITA NAOYUKI , YASUGATA KAZUTOSHI , OGINO KAORU , OISHI KAZUHIRO , KUBOTA KAORU
IPC分类号： F23N5/24 , F24H9/20
摘要： PURPOSE: To provide a combustor capable of safely dealing with live gas leakage of fuel gas. CONSTITUTION: There is provided a contact combustion type CO sensor 20 having a CO detection device. The CO sensor 20 is constructed as one capable of detection of hydrocarbon(CmHn) by raising the temperature of the CO detection device. After combustion interruption decision means 24 decides a combustor to interrupt a combustion operation, sensor temperature adjustment means 25 raises the temperature of the CO detection device of the CO sensor 20 to enable the detection of CmHn concentration. When the CmHn detected concentration in an apparatus detected by the CO sensor 20 reaches a combustion obstruction reference concentration, a dangerous combustion obstruction unit 44 obstructs starting of the next combustion operation, while when the CmHn detected concentration is less than the combustion obstruction reference concentration but exceeds safe concentration, a CmHn exhaust operation control unit 45 rotates a combustion fan 5 for exhaustion of CmHn. There is further provided a CmHn safety device 38 for preparing the next combustion operation.

2. 发明专利

JPH095280A CO SENSOR 失效
公开(公告)号：JPH095280A
公开(公告)日：1997-01-10
申请号：JP17942095
申请日：1995-06-22
申请人： GASTAR CORP , YAZAKI CORP
发明人： ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI , YASUGATA KAZUTOSHI , OGINO KAORU , OISHI KAZUHIRO
IPC分类号： G01N27/16
摘要： PURPOSE: To provide a CO sensor which facilitates manufacture of its cover and does not receive bad influence of flow velocity of exhaust gas. CONSTITUTION: A CO detection mechanism part 3 provided with a comparative element 4 and a detection element is formed on the surface side of a sensor base 1, and coated with a cover 35 covered on the sensor base 1. The cover 35 is constituted by a composite material of a filter material 15 and a mesh 16 sandwiching the surface and the rear surface of the filter material 15 with the mesh 16. Small through holes are scatteringly formed on the filter material 15. Exhaust gas passes through the mesh 16 and the filter material 15, is introduced into the cover 35 in a state of almost zero flow velocity, and CO concentration in the exhaust gas is detected by the CO detection mechanism part 3 in the state which has no influence of the flow velocity. Even if the exhaust gas is stopped through the filter material 15, it enters the cover 35 through the small through holes 40 and the detection of the CO concentration is made possible without hindrance.

3. 发明专利

JPH0914653A COMBUSTION EQUIPMENT 失效
公开(公告)号：JPH0914653A
公开(公告)日：1997-01-17
申请号：JP18069395
申请日：1995-06-22
申请人： GASTAR CORP , YAZAKI CORP , TOKYO GAS CO LTD
发明人： ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI , YASUGATA KAZUTOSHI , OGINO KAORU , KUBOTA KAORU
IPC分类号： F23N5/24
摘要： PURPOSE: To prevent fuel supply from uselessly stopping each gusty wind to improve convenience by momentarily inhibiting stoppage of fuel supply to continue combustion even if a fan is controlled in an up-mode and CO concentration exceeds an allowable value when gas quantity detected is smaller than a threshold. CONSTITUTION: When gusty wind blows in, wind velocity detected by a wind velocity sensor 6 rapidly decreases. Also, when gusty wind blows in, combustion air is not adequately fed by a fan 2 to make a combustion condition at a burner 1 worse, so that CO concentration in exhaust gas momentarily increases with a little time lag. Since an increase in CO concentration at this time is momentary, human organism is not affected thereby. A momentary retention means 7 judges blowing-in of gusty wind when wind velocity sensed by the wind velocity sensor 6 lowers below a threshold, and cancels information of CO concentration to temporarily retain stoppage of gas supply even when the fan 2 is controlled in an up-mode and the CO concentration exceeds an allowable value.

4. 发明专利

JPH095278A CO SENSOR 失效
公开(公告)号：JPH095278A
公开(公告)日：1997-01-10
申请号：JP17941895
申请日：1995-06-22
申请人： GASTAR CORP , YAZAKI CORP
发明人： ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI , YASUGATA KAZUTOSHI , OGINO KAORU , OISHI KAZUHIRO
IPC分类号： G01N27/16
摘要： PURPOSE: To provide a CO sensor without receiving influence due to flow velocity of exhaust gas. CONSTITUTION: A CO detection mechanism part 3 providing a comparative element 4 and a detection element is formed on the surface side of a sensor base 1 and covered by a cover 35. The edge side of the cover 35 is diameter- reduced, the opening of the edge of a cylinder hole is shut off by a flow velocity deceleration member 40, and the inner space of a diameter reduction cylinder wall 47 is made a deceleration introduction chamber 38. The base end side of the cover 35 is made a diffusion chamber 41. Exhaust gas is decelerated, introduced into the deceleration introduction chamber 38, and diffused in the diffusion chamber 41 in a state in which the flow velocity does not nearly exist. The exhaust gas diffuses in the diffusion chamber 41 in the state of almost zero flow velocity, reaches the CO detection mechanism part 3, and CO detection in the exhaust gas is detected by the CO detection mechanism part 3 without receiving influence of the flow velocity.

5. 发明专利

JPH0933473A GAS DETECTION SENSOR 失效
公开(公告)号：JPH0933473A
公开(公告)日：1997-02-07
申请号：JP20785495
申请日：1995-07-21
申请人： GASTAR CORP , YAZAKI CORP
发明人： ENOMOTO MASANORI , YASUGATA KAZUTOSHI
IPC分类号： G01N27/16
摘要： PROBLEM TO BE SOLVED: To provide a CO sensor capable of detecting the concentration of CO in an exhaust gas and a change of a flow velocity of a main flow of the exhaust gas. SOLUTION: A CO detection mechanism part 3 including a comparison element 4, a detection element 5 and a temperature detection element 12 is formed on a sensor base 1. A wind velocity detection element 50 of a heat beam type is set next the CO detection mechanism part 3. The wind velocity detection element 50 and CO detection mechanism part 3 are separated by a heat-shielding wall 51. The CD detection mechanism part 3, wind velocity detection element 50 and heat-shielding wall 51 are covered with a metallic cover 35. At a front end of the cover 35, an entrance orifice hole 36 is formed at the side of an upstream of an exhaust gas and an exit orifice hole 37 is formed at the side of a downstream. The exhaust gas is decelerated at the orifice holes 36, 37, entering a deceleration introduction chamber 38 in the cover 35 while decreasing a flow velocity. The exhaust gas is dispersed at a dispersing chamber 41 finally to reach the CO detection mechanism part 3. It is judged with reference to a concentration of CO detected by the CO detection mechanism part 3 and a wind velocity value detected by the wind velocity detection element 50 whether an increase of the concentration of CO results from influences of a headwind blowing at an exit of the exhaust gas.

6. 发明专利

JPH0914656A COMBUSTION APPARATUS AND COMBUSTION SYSTEM CONTAINING IT 失效
公开(公告)号：JPH0914656A
公开(公告)日：1997-01-17
申请号：JP17941395
申请日：1995-06-22
申请人： GASTAR CORP , YAZAKI CORP , TOKYO GAS CO LTD
发明人： ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI , TAKESHITA NAOYUKI , YASUGATA KAZUTOSHI , OGINO KAORU , OISHI KAZUHIRO , KUBOTA KAORU
IPC分类号： F23N5/24 , F24H9/20
摘要： PURPOSE: To provide a combustion apparatus capable of dealing with both of production of CO gas and leakage of live gas of fuel gas. CONSTITUTION: Temperature of a CO sensor 20 for detecting CO concentration in waste gas is controlled to a temperature where CO gas and hydrocarbon(HC) can be detected whereby the CO sensor 20 can detect both of the CO gas and the HC. An HC/CO discrimination unit 26 incorporates therein a detection signal from the CO sensor 20 and a discrimination signal between combustion operation and interruption operation of an apparatus from a combustion discrimination unit 24, and decides the detection signal of the CO sensor 20 during the combustion operation to be a CO concentration detection signal while deciding that during interruption of combustion to be an HC concentration detection signal. When the HC detection signal is outputted exceeding a reference value, gas leakage safety means 43 interrupts a gas leakage safety valve 44 interposed in a fuel gas introduction part to the apparatus.

7. 发明专利

JPH095277A CO SENSOR 失效
公开(公告)号：JPH095277A
公开(公告)日：1997-01-10
申请号：JP17941795
申请日：1995-06-22
申请人： GASTAR CORP , YAZAKI CORP
发明人： ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI , YASUGATA KAZUTOSHI , OGINO KAORU , OISHI KAZUHIRO
IPC分类号： G01N27/16
摘要： PURPOSE: To provide a CO sensor which does not receive influence caused by flow velocity of exhaust gas. CONSTITUTION: A CO detection mechanism part 3 providing a comparative element 4 and a detection element is formed on the surface side of a sensor base 1, and covered by a cover 35. An inlet opening 36 and an outlet opening 37 are formed on the edge side of the cover 35, an inner space is made a deceleration introduction chamber 38, the base end of the cover 35 is a diffusion chamber 41, and the diffusion chamber 41 and the deceleration introduction chamber 38 are divided by a partition wall 40. A minute communicating hole 42 is formed in the partition wall 40. Exhaust gas is decelerated, introduced into the deceleration introduction chamber 38, furthermore decelerated at the time when it passes through the minute communicating hole 42, and introduced into the diffusion chamber 41 in a state in which flow velocity does not nearly exist. The exhaust gas of the almost zero flow velocity diffuses in the diffusion chamber 41, reaches the CO detection mechanism part 3, and the CO concentration in the exhaust gas is detected by the CO detection mechanism part 3 without receiving the influence of the flow velocity.

8. 发明专利

JPH095282A CONTACT-BURING TYPE GAS SENSOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH095282A
公开(公告)日：1997-01-10
申请号：JP15647895
申请日：1995-06-22
申请人： YAZAKI CORP , GASTAR CORP
发明人： OGINO KAORU , OISHI KAZUHIRO , YASUGATA KAZUTOSHI , ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI
IPC分类号： G01N25/30 , G01N27/16
摘要： PURPOSE: To provide a contact-burning type gas sensor by which the concentration of a low-concentration combustible gas in a gas including incombustible gas elements such as carbon dioxide, etc., can be measured accurately. CONSTITUTION: A contact-burning type gas sensor is provided with a detection element and a comparison element, and the detection element is formed by arranging a γ-alumina depositing a catalyst around a metallic wire, while the comparison element is formed by arranging an α-alumina around the metallic wire. When assuming that the mass of the γ-alumina is the detection element is 100, that of the α-alumina in the comparison element is more than 70 and less than 130.

9. 发明专利

JPH095281A CONTACT COMBUSTION TYPE CO SENSOR 失效
公开(公告)号：JPH095281A
公开(公告)日：1997-01-10
申请号：JP17941695
申请日：1995-06-22
申请人： GASTAR CORP , YAZAKI CORP
发明人： ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI , YASUGATA KAZUTOSHI , OGINO KAORU , TAKASHIMA HIROMASA , OISHI KAZUHIRO
IPC分类号： G01N27/16
摘要： PURPOSE: To maintain TCR characteristics of a platinum wire and contrive reinforcement of tension strength thereof in regard to a very fine resistance wire, which is the platinum wire, using for a comparative element and a detection element of a contact combustion type CO sensor. CONSTITUTION: At least a pair of first terminal pins and a pair of second terminal pins 2b are projected at the surface side of a sensor base 1. A very fine resistance wire of a detection element for detecting CO concentration by contact reaction is tensed between the first terminal pins. Similarly, another very fine resistance wire of a comparative element 4 is tensed between the terminal pins 2b. The comparative element 4 and the detection element is partitioned by a partition plate 6. The very fine resistance wire of the comparative element 4 and the detection element is constituted by the platinum wire containing zirconia or yttria of a very small amount in the range of 1.0%, or less, tension strength is heightened twice compared with a conventional platinum wire and TCR characteristics equal to a pure platinum wire is secured.

10. 发明专利

JPH095279A CO SENSOR 失效
公开(公告)号：JPH095279A
公开(公告)日：1997-01-10
申请号：JP17941995
申请日：1995-06-22
申请人： GASTAR CORP , YAZAKI CORP
发明人： ENOMOTO MASANORI , KIMURA SHINGO , SHIGEOKA TAKUJI , YASUGATA KAZUTOSHI , OGINO KAORU , OISHI KAZUHIRO
IPC分类号： G01N27/16
摘要： PURPOSE: To make manufacture of a CO sensor easy and prevent malfunction caused by a water droplet drop due to dewing of water vapor in exhaust gas. CONSTITUTION: A CO detection mechanism part 3 is formed on the upper face of a sensor base 1. A cover 35 of a mesh is covered on the sensor base 1 and the CO detection mechanism part 3 is coated by the cover 35. A cylinder part 36 is engaged on the outside of the cover 35, which is fixed on the sensor base 1 by calking of the cylinder part 36. The cylinder wall of the cylinder part 36 extends up to the position where the CO detection mechanism part 3 is covered from the side of the sensor base 1, and a water droplet protection wall 40 is formed. When a CO sensor 9 is mounted sideward, and CO concentration in exhaust gas is detected, a water vapor component in the exhaust gas dews, becomes a water droplet on a sensor mounting wall, adhere thereto, even if the water droplet is transferred to the side of the CO sensor 9, it is protected by the water droplet protection wall 40, and prevented from directly dropping on the CO detection mechanism part 3.

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