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1. 发明专利

JPH06317305A CATALYTIC COMBUSTOR 失效
公开(公告)号：JPH06317305A
公开(公告)日：1994-11-15
申请号：JP10637893
申请日：1993-05-07
申请人： TOSHIBA CORP
发明人： KUMAZAWA KATSUYOSHI , KUBOTA TORU , KAWABATA YUKA
IPC分类号： F23C99/00 , F23C13/00 , F23D11/40 , F23D14/18 , F23C11/00
摘要： PURPOSE:To achieve higher reliability by keeping the temperature of a catalytic reaction area within a range of use maintaining reliability on a gas seal surface to increase an thermal force adjusting range along with a longer life of a catalytic body. CONSTITUTION:A combustion cylinder 7 supporting catalytic bodies 1a, 1b and 1c is arranged to be a double structure comprising an inner cylinder 3 and an outer cylinder 5 to form an air path 15 therebetween. A fuel steam is supplied to a catalyst 1c at the lowest stage through a fuel injection nozzle 11 and air for combustion is supplied to mixing chambers 19a, 19b, 19c and 19d through air supply holes 21a, 21b, 21c and 21d provided in the inner cylinder 3 via the air path 15.

2. 发明专利

JPH06272821A CATALYTIC COMBUSTION DEVICE 失效
公开(公告)号：JPH06272821A
公开(公告)日：1994-09-27
申请号：JP6452693
申请日：1993-03-24
申请人： TOSHIBA CORP
发明人： KAWABATA YUKA , KUBOTA TORU , KUMAZAWA KATSUYOSHI
IPC分类号： F23D11/40
摘要： PURPOSE:To lower a variable heating lower limit and ensure a sufficient variable range by a method wherein a supplying of fuel is stopped when a lower limit value of combustion capacity of an electrical conductive self-heat generating type catalyst is detected, and the self-heat generating type catalyst is electrically energized. CONSTITUTION:A petroleum stove is provided with a combustion capacity lower limit sensing means for use in sensing a lower limit value of combustion capacity produced by a self-heat generating catalyst 1 having a certain electrical conductivity. In addition, when the lower limit value of combustion capacity is sensed by the combustion capacity lower limit value sensing means, a driving of a fuel pump is stopped and the fuel supplying with a gasification device 7 is stopped, thereby there is provided a control means 21 for electrically energizing the catalyst 1 through an electrode 6. As the combustion capacity lower limit value sensing means, it may be possible to provide means for sensing an amount of supplying fuel by an operation of a fuel pump, for example. With such an arrangement as above, it is possible to lower the variable combustion lower limitation further.

3. 发明专利

JPH06137522A CATALYST BURNER 失效
公开(公告)号：JPH06137522A
公开(公告)日：1994-05-17
申请号：JP28283492
申请日：1992-10-21
申请人： TOSHIBA CORP
发明人： KUBOTA TORU , KAWABATA YUKA , KUMAZAWA KATSUYOSHI
IPC分类号： F23D11/40 , F23D14/18
摘要： PURPOSE:To make supply fuel to a plurality of catalysts arranged in series from each other uniform. CONSTITUTION:A plurality of catalysts 21a, 21b, 21c are disposed in series, contained in a catalyst reaction tube 23 and fuel is supplied from a fuel passage 41 between a reaction gas supply tube 27 provided on an outer periphery of the tube 23 to the catalysts 21a, 21b, 21c through fuel supply ports 23b of the tube 23.

4. 发明专利

JPH01118759A GAS SENSOR 失效
公开(公告)号：JPH01118759A
公开(公告)日：1989-05-11
申请号：JP27680787
申请日：1987-10-31
申请人： TOSHIBA CORP
发明人： KAWABATA YUKA , AWANO HIROSHI
IPC分类号： G01N27/12
摘要： PURPOSE:To reduce variance in resistance value by forming >=2 layers of a gas sensing film by using metal oxide semiconductor films. CONSTITUTION:A counter electrode 2 is formed on the surface of an insulating substrate 1 and an electrode pad 8 for a heater is formed on the reverse surface of the substrate 1. The Heater 7 is therefore formed connecting with a pad 8 on the reverse surface of the substrate 1, the sensing film containing an organic metal compound is further printed on the top side, and the metal oxide semiconductor thin film formed by decomposing the organic metal compound thermally is baked as many times as desired to form a metal semiconductor thin film 5. A catalyst thin film 6 is formed on this thin film 5. Thus, >=2 layers of the gas sensing film are formed by using the metal oxide semiconductor film to uniform the characteristics of the gas sensing film and also reduce the variance in resistance value.

5. 发明专利

JPS63231254A GAS SENSOR 失效
公开(公告)号：JPS63231254A
公开(公告)日：1988-09-27
申请号：JP6420487
申请日：1987-03-20
申请人： TOSHIBA CORP
发明人： KAWABATA YUKA , AWANO HIROSHI
IPC分类号： G01N27/12
摘要： PURPOSE:To obtain a gas sensor which permits mass production and has good characteristics by printing paste contg. fine metal oxide powder and org. metal compd. and calcining the same. CONSTITUTION:A counter electrode 6, contact pads 9 for the counter electrode as well as contact pads 4 for heating elements are provided on the surface of an insulating substrate 1 such as alumina substrate. A thin metal oxide semiconductor film 7 such as, for example, tin oxide semiconductor film is further formed on the counter electrode 6. A porous metal oxide film 8 is provided atop the thin semiconductor film 7. This porous metal oxide film 8 is formed by printing the paste prepd. by a catalyst deposited with, for example, the oxide of tungsten and copper, ethylhydroxy ethyl cellulose and aluminum resinate with the fine powder of metal oxide such as alumina to a prescribed pattern and calcining the paste after drying.

6. 发明专利

JPH06337104A CATALYTIC COMBUSTION DEVICE 失效
公开(公告)号：JPH06337104A
公开(公告)日：1994-12-06
申请号：JP12567693
申请日：1993-05-27
申请人： TOSHIBA CORP
发明人： KUBOTA TORU , KAWABATA YUKA , KUMAZAWA KATSUYOSHI
IPC分类号： F23C99/00 , F23C13/00 , F23D11/40 , F23C11/00
摘要： PURPOSE:To shorten an ignition time and obtain a satisfactory amount of combustion as an entire combustion device while a required electric energy is decreased for ignition of a conductive catalyst capable of heating by turning on. CONSTITUTION:A catalyst 21 provided in the side of a carburetor 27 of catalysts 21 and 23 arranged in series with the carburetor side 27 is turned on so that it becomes a conductive catalyst capable of heating. This catalyst 21 is turned on during ignition and the amount of fuel to be supplied to the carburetor 27 is made lower than that upon ordinary combustion.

7. 发明专利

JPH06137523A CATALYST BURNER 失效
公开(公告)号：JPH06137523A
公开(公告)日：1994-05-17
申请号：JP28283592
申请日：1992-10-21
申请人： TOSHIBA CORP
发明人： KAWABATA YUKA , KUBOTA TORU , KUMAZAWA KATSUYOSHI
IPC分类号： F23D11/40 , F23D14/18
摘要： PURPOSE:To facilitate manufacture of catalyst in a small volume while increasing an area and to make a surface temperature distribution of the catalyst uniform. CONSTITUTION:A catalyst 21 is formed in a cylindrical shape, a fuel mixture gas supply tube 25 having a plurality of through holes 25a inside is provided, and mixture gas of petroleum vapor and the air is supplied to the catalyst 21 from a vapor injection tube 41 from below the tube 25.

8. 发明专利

JPH0254157A GAS SENSOR 失效
公开(公告)号：JPH0254157A
公开(公告)日：1990-02-23
申请号：JP20548588
申请日：1988-08-18
申请人： TOSHIBA CORP
发明人： AWANO HIROSHI , KAWABATA YUKA , IWAI TAKAYOSHI
IPC分类号： G01N27/12
摘要： PURPOSE:To allow required catalytic activity to be maintained and be available for a long time by providing counter electrodes, a gas sensing film and a catalytic layer. CONSTITUTION:Counter electrodes 3, 3' are formed by printing on the surface of an insulating substrate 2 with a heating element 1 housed, and a gas sensing film 4 is formed by printing so that it covers over the electrodes 3, 3'. Noble metal carried by alumina in a catalytic layer 5 is carried by 0.2mol% to 3.0mol. Although sintering is facilitated with the amount of the carried noble metal increased, a sufficiently large surface area of the exposed metal can be exhibited so that required catalytic activity can be maintained and made available for a long time.

9. 发明专利

JPH01250851A GAS SENSOR 失效
公开(公告)号：JPH01250851A
公开(公告)日：1989-10-05
申请号：JP7933088
申请日：1988-03-31
申请人： TOSHIBA CORP
发明人： AWANO HIROSHI , KAWABATA YUKA
IPC分类号： G01N27/12
摘要： PURPOSE:To obtain such a gas sensor that the forming process of a catalyst film is pure, variance in quality is small, and the catalyst film hardly deteriorates by forming the catalyst film of a burnt body of paste containing carrier powder and resin acid of a platinum group element. CONSTITUTION:A specific pattern for a heating body 5 is formed on an alumina substrate 1 by using mixed film paste of platinum and tungsten, alumina thick film paste is printed thereupon in a film shape, and comb type counter electrodes 2 are printed further thereupon by using gold paste and then baked in a reducible atmosphere to manufacture a ceramic insulating substrate 1. Then, paste obtained by adding turpentine oil to the mixture of 2-ethyl hexanoic acid tin and resin film acid niobium is printed and baked on the counter electrodes 2 on the substrate 1 and then doped to form a tin oxide semiconductor film 3. Then the catalyst film 4 is formed on the semiconductor film 3. Then the gas sensing element where the catalyst film 4 is formed is put in a package to complete the sensor.

10. 发明专利

JPS6383652A GAS SENSOR 失效
公开(公告)号：JPS6383652A
公开(公告)日：1988-04-14
申请号：JP23064986
申请日：1986-09-29
申请人： TOSHIBA CORP
发明人： KAWABATA YUKA , AWANO HIROSHI
IPC分类号： G01N27/12
摘要： PURPOSE:To increase the dependency of resistance on gas concn. by providing a catalyst layer formed by coating and calcining alumina powder and paste on a gas sensitive body consisting of a metal oxide semiconductor on an insulating substrate. CONSTITUTION:A heating element 2 consisting of a thick film of platinum system is provided on one face of the insulating substrate 1 and an alumina insulator 3 is provided to a film shape thereon. Through-holes of the insulator 3 are provided in order to form pads on both ends of the element 2. Lead wires 7 are connected to the element 2. Comb-shaped electrodes 4 consisting of a thick film of gold system are provided on the insulator 3 and the gas sensitive body 5 consisting of the metal oxide semiconductor of tin oxide system is formed to the film shape thereon. The catalyst layer 6 formed by coating and calcining the paste contg. the alumina powder deposited thereon with the metal oxide and the org. alumina compd. at 0.02-0.2mol per mol of the alumina in said alumina is provided on the body 5. A gas sensor having such large dependency on gas concn. at which the resistance value of the metal oxide semiconductor is inversely proportional to 0.5-1.0 power of the gas concn. is thereby obtd.

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