Fluid heating component, fluid heating component complex, and manufacturing method of fluid heating component

Patent metadata

Field	Value
Publication number	US-11219100-B2
Application number	US-201916296765-A
Country	US
Kind code	B2
Filing date	Mar 8, 2019
Priority date	Mar 20, 2018
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A fluid heating component including: a porous body made of ceramics and formed with through channels through which a fluid passes, and a conductive coating layer disposed on a through channel surface of at least a part of each through channel, wherein the conductive coating layer is electrically connected, and is continuous.

First claim

What is claimed is:

1. A fluid heating component comprising:
a porous body made of ceramics and formed with through channels through which a fluid passes,
a conductive coating layer disposed on a through channel surface of at least a part of each through channel, and
a conductive pore portion coating layer disposed on the surface of a pore portion of the porous body,
wherein the conductive coating layer is electrically connected, and is continuous, and
wherein the conductive coating layer is electrically connected to the conductive pore portion coating layer, and is continuous.

2. The fluid heating component according to claim 1 , wherein the conductive coating layer has at least a part of the through channels formed in an annularly continuous state, in a cut surface of the through channels which is perpendicular to a passing direction of the fluid.

3. The fluid heating component according to claim 1 , wherein the porous body is a honeycomb structure comprising partition walls which define a plurality of cells extending from one end face to the other end face and formed as the through channels.

4. The fluid heating component according to claim 1 , wherein the porous body has a porosity of from 0.1% to 60%.

5. The fluid heating component according to claim 1 , wherein the porous body contains, as a main component, at least one ceramic component selected from the group consisting of silicon carbide, cordierite, a silicon-silicon carbide based composite material, mullite, alumina, spinel, a silicon carbide-cordierite based composite material, lithium aluminum silicate, aluminum titanate, silicon nitride, aluminum nitride, and magnesium oxide.

6. The fluid heating component according to claim 1 , wherein the porous body has a thermal conductivity of from 0.1 W/m·K to 300 W/m·K.

7. The fluid heating component according to claim 1 , wherein the porous body is made of ceramics containing silicon carbide as a main component, and an electric resistivity of the porous body is from 0.01 Ωcm to 10 Ωcm.

8. The fluid heating component according to claim 1 , wherein the conductive coating layer possesses a multilayer structure, and comprises:
an electroless plating layer which is in contact with the surface of the porous body, and
at least one induction heating layer laminated on the electroless plating layer.

9. The fluid heating component according to claim 1 , wherein the conductive coating layer has a coating layer thickness of from 0.1 μm to 500 μm.

10. A manufacturing method of the fluid heating component according to claim 1 , which comprises a raw material fluid passing step of:
passing a raw material fluid of a gas or a liquid containing components of the conductive coating layer along the through channels for the fluid which are formed in the porous body made of ceramics, and
forming the conductive coating layer on the surfaces of the through channels.

11. The manufacturing method of the fluid heating component according to claim 10 , wherein the porous body is a honeycomb structure comprising partition walls which define a plurality of cells extending from one end face to the other end face and formed as the through channels for the fluid,
the manufacturing method further comprising a plugging step of plugging the one end face of the honeycomb structure in accordance with a predetermined arrangement standard, and plugging the residual cells of the other end face,
wherein in the raw material fluid passing step, the raw material fluid is passed through the honeycomb structure in which plugging portions are formed by the plugging step, to form the conductive coating layer.

12. A fluid heating component complex which is formed by using the fluid heating component according to claim 1 , and
which is monolithically constructed by using a plurality of prismatic columnar fluid heating components, or which is monolithically constructed by using at least one of the prismatic columnar fluid heating components, and one or a plurality of prismatic columnar porous bodies made of ceramics and formed with through channels through which a fluid passes.

Assignees

• Ngk Insulators Ltd

Inventors

• Takahashi Hironori
• Ishida Hiroki

Classifications

• B28B2003/203

  for multi-channelled structures, e.g. honeycomb structures · CPC title

• H05B6/108 Primary

  for heating a fluid · CPC title

• C04B35/565

  based on silicon carbide · CPC title

• C04B2111/94

  Electrically conducting materials · CPC title

• F01N3/2013

  using electric or magnetic heating means · CPC title