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1. 发明专利

JPS6290529A METHOD FOR DETECTING GAS AND GAS SENSOR 失效
公开(公告)号：JPS6290529A
公开(公告)日：1987-04-25
申请号：JP961386
申请日：1986-01-20
申请人： YANAGIDA HIROAKI , OSAKA GAS CO LTD
发明人： YANAGIDA HIROAKI , OKADA OSAMU , NAKAMURA YOSHINOBU , TSURUYA TAKESHI
IPC分类号： G01N27/12 , G01N27/04 , G01N27/22
摘要： PURPOSE:To selectively set sensitivity corresponding to the kind of gas to be detected, by simple constitution such that specimen gas is introduced into the gap between the contact surfaces of two kinds of semiconductive substances each having a rectifying characteristic and the change in the energy level of the potential barrier of each semiconductive substance surface corresponding to the kind of the gas is detected. CONSTITUTION:N-type and P-type semiconductive substances 1, 2 are mechanically held between ceramic substrates 3, 4 by a spring 5 and voltage is applied between lead wires 32, 42 and specimen gas G is introduced into the gap between the contact surfaces of the substances 1, 2 from the direction shown by an arrow to measure a voltage-current characteristic. The specimen gas is detected by utilizing that the energy level of the potential barrier of each semiconductive substance surface changes corresponding to the kind of the specimen gas. Different gas can be selectively detected by controlling voltage to be applied or heating temp. and it is unnecessary to heat an element to high temp. and measurement can be performed even in an atmosphere wherein the concn. of oxygen varies and the specimen gas can be detected with high sensitivity by simple constitution.

2. 发明专利

JPS6290528A METHOD FOR DETECTING GAS 失效
公开(公告)号：JPS6290528A
公开(公告)日：1987-04-25
申请号：JP10568086
申请日：1986-05-07
申请人： YANAGIDA HIROAKI , OSAKA GAS CO LTD
发明人： YANAGIDA HIROAKI , OKADA OSAMU , NAKAMURA YOSHINOBU , TSURUYA TAKESHI
IPC分类号： G01N27/12 , G01N27/04 , G01N27/22
摘要： PURPOSE:To detect carbon dioxide with high accuracy by simple constitution such that specimen gas is introduced into the gap between the contact surfaces of two kinds of semiconductive substances each having a rectifying characteristic and the change in the energy level of the potential barrier of each semiconductive substance surface corresponding to the kind of the gas is detected. CONSTITUTION:A N-type semiconductive substance 1 and P-type semiconductive substance 2 are mechanically held between ceramic substrates 3, 4 by a spring a 5 and specimen gas G is introduced into the gap between the contact surfaces of the substances 1, 2 from the direction shown by an arrow. Voltage is applied between the respective lead wires 32, 42 of contacted electrodes 11, 31 and 12, 41 and current are respectively measured in both states, that is, in a state wherein atmospheric gas such as nitrogen is present in the gap and in a state wherein the specimen gas was introduced into the gap. By ultilizing such a phenomenon that the energy level of the potential barrier of a semiconductive substance surface changes to a different value corresponding to the kind of the gas contained in the specimen gas, a minute amount of carbon dioxide can be detected at low temp. with high sensitivity by simple constitution.

3. 发明专利

JPH08224171A ELECTRIC HOT WATER-STORING CONTAINER OF WATER PURIFYING TYPE 失效
公开(公告)号：JPH08224171A
公开(公告)日：1996-09-03
申请号：JP3205095
申请日：1995-02-21
申请人： TIGER VACUUM BOTTLE CO LTD , OSAKA GAS CO LTD
发明人： NAKAMURA YOSHINOBU , OZEKI TETSUO , UEDA TETSUO
IPC分类号： A47J27/21 , C02F1/28
摘要： PURPOSE: To make it possible to attain high water purifying efficiency as a result of having contact area of liquid in a container with a water purifying material increased, and having capture of air bubbles decreased for better contact with the liquid. CONSTITUTION: This electric hot water-storing container of water purifying type is disposed with a heater 1 to perform boiling and/or temperature retention by heating liquid contained in a container 4, a water pouring pipe path 12 to lead the liquid outside the container 4, a motor-driven or manually driven pump 15 to pour the liquid outside the container 4 through the water pouring pipe path 12, and a water purifier 64 to purify the liquid by achieving contact with a water purifying material 64a. The water purifier 64 houses the water purifying material 64a in a case A of flat shape whose front and rear surfaces having become a liquid permeating section a. An attachment 63 to the container 4 is disposed in the water purifier 64 to support the water purifier 64 by keeping the front and rear surfaces of the water purifier 64 away from the inner face of a hot water storing area of the container 4.

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