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    GAS SENSOR
    2.
    发明公开
    GAS SENSOR 审中-公开

    公开(公告)号：EP3361245A1

    公开(公告)日：2018-08-15

    申请号：EP18160301.0

    申请日：2011-03-24

    申请人： NGK Insulators, Ltd.

    发明人： HORISAKA, Sumiko ,  FUJITA, Hiroki ,  MURAKAMI, Mika ,  ITO, Takashi

    IPC分类号： G01N27/419 ,  G01N27/407

    CPC分类号： G01N27/409 ,  G01N27/4071 ,  G01N27/4072 ,  G01N27/4074 ,  G01N27/417 ,  G01N27/419

    摘要： An object of the present invention is to provide a gas sensor whose measurement accuracy is stably maintained even if water adheres to an end portion of a sensor element. A gas sensor including a sensor element constituted by an oxygen-ion conductive solid electrolyte as a main component and detecting a predetermined gas component in a measurement gas includes: an external communication part having an opening opened to the outside, and introducing the measurement gas from the outside under a predetermined diffusion resistance; an internal space communicating with the external communication part; a first electrode formed on a surface of the internal space; a second electrode formed in a space different from the internal space; and a pumping cell operable to pump out oxygen existing in the internal space when a predetermined voltage is applied between the first electrode and the second electrode. The thickness of the external communication part is 50% or more and 100% or less of the thickness of the internal space.

    GAS SENSOR ELEMENT AND GAS SENSOR
    5.
    发明公开
    GAS SENSOR ELEMENT AND GAS SENSOR 审中-公开
    GASSENSORELEMENT UND GASSENSOR

    公开(公告)号：EP3029458A1

    公开(公告)日：2016-06-08

    申请号：EP15197867.3

    申请日：2015-12-03

    申请人： NGK Insulators, Ltd.

    发明人： SAKAKIBARA, Hironori ,  OZAWA, Shuichi ,  FUJITA, Hiroki ,  MAEDA, Shinsaku

    IPC分类号： G01N27/407 ,  G01N27/406

    CPC分类号： G01N27/419 ,  G01N27/4075 ,  G01N27/4077 ,  G01N27/409 ,  G01N27/4166

    摘要： A sensor element 101 includes a sensor element main body 101a including an oxygen ion-conductive solid electrolyte layer (each of layers 1 to 6) and a porous protective layer 91 covering at least part of the sensor element main body 101a. Then, the porous protective layer 91 has the value of the number of interfaces in a unit thickness direction, which is the number of particle interfaces of constituent particles every 100 µm in the thickness direction, of 15 or more and 250 or less. Also, the porous protective layer 91 has the value of the ratio of the number of interfaces (= the number of interfaces in a unit surface direction/the number of interfaces in a unit thickness direction) of the number of interfaces in a unit surface direction, which is the number of particle interfaces of constituent particles every 100 µm in the surface direction perpendicular to the thickness direction, to the number of interfaces in a unit thickness direction of more than 0 and 0.7 or less. The value of the number of interfaces in a unit thickness direction is preferably 30 or more. The thickness of the porous protective layer 91 may be 500 µm or less.

    摘要翻译： 传感器元件101包括具有氧离子传导性固体电解质层（层1〜6）的传感器元件主体101a和覆盖传感器元件主体101a的至少一部分的多孔保护层91。 然后，多孔保护层91具有在厚度方向上每100μm的构成粒子的粒子界面数为单位厚度方向的界面数为15以上且250以下的值。 此外，多孔保护层91具有在单位面方向上的界面数量的界面数（=单位面方向的界面数/单位厚度方向的界面数）的比率的值 是与垂直于厚度方向的面方向每100μm的构成粒子的粒子数相对于单位厚度方向的界面数多于0以上且0.7以下的数量。 单位厚度方向的界面数优选为30以上。 多孔保护层91的厚度可以为500μm以下。

    SENSOR ELEMENT AND GAS SENSOR
    6.
    发明公开
    SENSOR ELEMENT AND GAS SENSOR 审中-公开
    传感器传感器

    公开(公告)号：EP2955513A1

    公开(公告)日：2015-12-16

    申请号：EP15171215.5

    申请日：2015-06-09

    申请人： NGK Insulators, Ltd.

    发明人： MURAKAMI, Mika ,  HORISAKA, Sumiko ,  FUJITA, Hiroki

    IPC分类号： G01N27/407 ,  G01N27/419 ,  G01N33/00

    CPC分类号： G01N33/0039 ,  G01N27/4071 ,  G01N27/4077 ,  G01N27/419 ,  Y02A50/247

    摘要： A sensor element 101 of a gas sensor 100 includes a blocking portion 65 including an outer blocking layer 67 that is formed to cover, in an upper surface of a multilayer body, at least a part of an upper closest region 6a where an outer pump electrode 23 is not disposed and a distance up to a third inner cavity 61 is minimal. The outer blocking layer 67 does not have conductivity for one or more among various types of substances containing oxygen. The outer blocking layer 67 is disposed between a lead line 93 for the outer pump electrode and the upper surface of the multilayer body to provide insulation therebetween, and is disposed between an upper connector pad 91 and the upper surface of the multilayer body to provide insulation therebetween. A porous protective layer 24 covers the outer pump electrode 23.

    摘要翻译： 气体传感器100的传感器元件101包括阻挡部分65，该阻挡部分65包括外阻挡层67，外阻挡层67形成为覆盖多层体的上表面中的最上部区域6a的至少一部分，其中外泵电极 23不被设置，并且直到第三内腔61的距离最小。 外阻挡层67对于含有氧的各种物质中的一种以上不具有导电性。 外部阻挡层67设置在外部泵电极的引线93和多层体的上表面之间以提供绝缘，并且设置在上连接器焊盘91和多层体的上表面之间以提供绝缘 其间。 多孔保护层24覆盖外泵电极23。

    SENSOR ELEMENT AND GAS SENSOR
    7.
    发明公开
    SENSOR ELEMENT AND GAS SENSOR 审中-公开
    传感器传感器

    公开(公告)号：EP2930503A1

    公开(公告)日：2015-10-14

    申请号：EP13862460.6

    申请日：2013-12-03

    申请人： NGK Insulators, Ltd.

    发明人： MURAKAMI, Mika ,  HORISAKA, Sumiko ,  FUJITA, Hiroki

    IPC分类号： G01N27/416 ,  G01N27/419

    CPC分类号： G01N27/41 ,  G01N27/4071 ,  G01N27/4077

    摘要： A gas sensor includes a blocking portion 65 including an inner blocking layer 66 and outer blocking layer 67. The inner blocking layer 66 covers at least part of an exposed portion where solid-electrolyte layers are exposed as inner surfaces of a third internal cavity 61. The outer blocking layer 67 covers at least part of a nearest portion 6a that is at the shortest distance from the third internal cavity 61 among portions of outer surfaces of a multilayer structure where the solid-electrolyte layers are exposed. The inner blocking layer 66 and the outer blocking layer 67 do not each conduct one or more kinds of substances that contain oxygen. The outer blocking layer 67 covers the entirety of the nearest portion 6a. An area ratio A/B of a covered area A by which the blocking portion 65 covers the solid-electrolyte layers to an exposed area B by which the solid-electrolyte layers are exposed as the inner surfaces of the third internal cavity 61 is 0.3 or greater.

    摘要翻译： 气体传感器包括包括内部阻挡层66和外部阻挡层67的阻挡部分65.内部阻挡层66覆盖固体电解质层暴露于第三内部空间61的内表面的暴露部分的至少一部分。 外部阻挡层67覆盖在固体电解质层露出的多层结构的外表面的部分之中与第三内部空间61距离最短距离的最近部分6a的至少一部分。 内部阻挡层66和外部阻挡层67不分别导入含有氧的一种以上的物质。 外阻挡层67覆盖最近部分6a的整体。 覆盖区域A的面积比A / B，其中阻挡部分65将固体电解质层覆盖到第三内腔61的内表面暴露固体电解质层的暴露区域B为0.3或 更大。