US 11,231,380 B2Granted

Fluid-property detection device

AssigneeKYB Corporation

InventorsYukinori Kameda, Takahiro Yoshida

Life of this patent

Estimating the term…

Loading patent…

Abstract

A fluid-property detection device includes a housing attached to the external device, the housing being configured to hold the outer electrode and the inner electrode, an outer insulating member provided between the housing and the outer electrode, the outer insulating member being configured to insulate between the housing and the outer electrode, and an inner insulating member provided between the outer electrode and the inner electrode, the inner insulating member being configured to insulate between the outer electrode and the inner electrode, being configured to insulate between the housing and the inner electrode. The outer electrode and the inner electrode respectively have tip end portions, the tip end portions projecting out from the housing and being configured to expose to the detection target fluid contained in the external device.

Claims7

Dependent claims

A fluid-property detection device for detecting a property of a detection target fluid contained in an external device, the fluid-property detection device comprising:

a tubular outer electrode;
a bar-shaped inner electrode provided inside the outer electrode;
a computing unit configured to compute a property value of the detection target fluid based on an electrical property between the outer electrode and the inner electrode;
a housing attached to the external device, the housing being configured to hold the outer electrode and the inner electrode;
an outer insulating member provided between the housing and the outer electrode, the outer insulating member being configured to insulate between the housing and the outer electrode and being configured to define a position of the outer electrode with respect to the housing;
an inner insulating member provided between the outer electrode and the inner electrode, the inner insulating member being configured to insulate between the outer electrode and the inner electrode, being configured to insulate between the housing and the inner electrode, and being configured to define a position of the inner electrode with respect to the housing;
and
an electrode cover attached to the housing, the electrode cover being configured to cover tip end portions of the outer electrode and the inner electrode, wherein
the outer electrode and the inner electrode respectively have the tip end portions, the tip end portions projecting out from the housing and being configured to be exposed to the detection target fluid contained in the external device,
the outer electrode is provided with an electrode through hole through which an inside and an outside of the outer electrode communicate with each other,
the electrode cover is provided with a cover through hole through which an inside and an outside of the electrode cover communicate with each other, and
the electrode through hole and the cover through hole are positioned on a line perpendicular to a center axis of the outer electrode.

9 more elements

A fluid-property detection device for detecting a property of a detection target fluid contained in an external device, the fluid-property detection device comprising:

a tubular outer electrode;
a bar-shaped inner electrode provided inside the outer electrode;
a computing unit configured to compute a property value of the detection target fluid based on an electrical property between the outer electrode and the inner electrode;
a housing attached to the external device, the housing being configured to hold the outer electrode and the inner electrode;
an outer insulating member provided between the housing and the outer electrode, the outer insulating member being configured to insulate between the housing and the outer electrode and being configured to define a position of the outer electrode with respect to the housing;
and
an inner insulating member provided between the outer electrode and the inner electrode, the inner insulating member being configured to insulate between the outer electrode and the inner electrode, being configured to insulate between the housing and the inner electrode, and being configured to define a position of the inner electrode with respect to the housing, wherein
the outer electrode and the inner electrode respectively have tip end portions, the tip end portions projecting out from the housing and being configured to be exposed to the detection target fluid contained in the external device,
the outer electrode has:
a cylindrically-shaped outer-electrode tube portion;
and
an outer-electrode flange configured to protrude radially outwards from a base end portion of the outer-electrode tube portion, the outer insulating member has:
a cylindrically-shaped outer insulating tube portion;
and
an outer insulating flange configured to protrude radially outwards from a base end portion of the outer insulating tube portion,
the inner insulating member has:
a cylindrically-shaped inner insulating tube portion;
and
an inner insulating flange configured to protrude radially outwards from a base end portion of the inner insulating tube portion,
the housing has:
a tube-portion receiving opening portion configured to receive the inner insulating tube portion in contact with the outer circumferential surface of the inner electrode, the outer-electrode tube portion in contact with an outer circumferential surface of the inner insulating tube portion, and the outer insulating tube portion in contact with an outer circumferential surface of the outer-electrode tube portion, the tube-portion receiving opening portion being in contact with an outer circumferential surface of the outer insulating tube portion;
a flange receiving opening portion configured to receive the outer insulating flange, the outer-electrode flange in contact with a base end surface of the outer insulating flange, and the inner insulating flange in contact with a base end surface of the outer-electrode flange;
and
a first step portion provided between the tube-portion receiving opening portion and the flange receiving opening portion, the first step portion being in contact with a tip end surface of the outer insulating flange, and
the fluid-property detection device further comprising an attachment member in contact with a base end surface of the inner insulating flange.

22 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/639,443Filed 14 May 2018
Priority: JP JP2017-17436111 Sep 2017
Published: US 2021/0033554 A14 Feb 2021
Granted: 25 Jan 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G01N 27/07
Of a liquid: construction of measuring vessels; Electrodes therefor
G01N 27/226
By investigating capacitance: construction of measuring vessels; Electrodes therefor
G01N 27/221
By investigating capacitance: by investigating the dielectric properties
G01N
Investigating or analysing materials by determining their chemical or physical properties