Beta-alumina and alpha-alumina bonding method using alpha-alumina and calcium oxide and thermal to electric converter using the same

Patent metadata

Field	Value
Publication number	US-9741497-B2
Application number	US-201414178239-A
Country	US
Kind code	B2
Filing date	Feb 11, 2014
Priority date	Feb 13, 2013
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

Disclosed is an insulating bonding part for bonding to a solid electrolyte including beta-alumina, the insulating bonding part comprising a plurality of layers which have different mixing ratios of the alpha-alumina and CaO, wherein the layer closer to the solid electrolyte including the beta-alumina has a higher ratio of the CaO, and wherein the layer farther from the solid electrolyte including the beta-alumina has a higher ratio of the alpha-alumina.

First claim

What is claimed is:

1. An insulating bonding part for bonding to a solid electrolyte including beta-alumina, the insulating bonding part comprising:
a plurality of layers which have different mixing ratios of alpha-alumina and CaO,
wherein a layer closer to the solid electrolyte including the beta-alumina has a higher ratio of the CaO, and a layer furthest from the layer having a higher ratio of the CaO has a higher ratio of the alpha-alumina.

2. A metal support type unit thermal to electric power generator comprising:
a thermal to electric power generation cell;
a case;
a working fluid which is disposed within the case;
a condenser which is disposed on an upper portion of the case and collects and condenses the working fluid which has passed through the thermal to electric power generation cell;
an evaporator which is disposed on a lower portion of the case, transfers heat to the working fluid and converts into vapor and transfers the working fluid vapor to the thermal to electric power generation cell;
a circulator which connects a space between the condenser and evaporator and allows the working fluid to be transferred; and
a bonding portion which bonds between the evaporator and the thermal to electric power generation cell,
wherein the bonding portion comprises a plurality of layers which have different mixing ratios of alpha-alumina and CaO,
wherein a layer of the bonding portion closer to a solid electrolyte including beta-alumina of the thermal to electric power generation cell has a higher ratio of the CaO, and a layer furthest from the layer having a higher ratio of the CaO has a higher ratio of the alpha-alumina.

3. The unit thermal to electric power generator of claim 2 , wherein the thermal to electric power generation cell comprises:
a tubular metal support;
the solid electrolyte which is formed on a surface of the metal support and includes the beta-alumina; and
a porous electrode formed on a surface of the solid electrolyte.

Assignees

• Korea Energy Research Inst

Inventors

• Kim Se-Young
• Woo Sang-Kuk
• Kim Sun-Dong
• Joo Jong-Hoon
• Han In-Sub
• Seo Doo-Won
• Yu Ji-Haeng

Classifications

• Y10T156/10

  Methods of surface bonding and/or assembly therefor · CPC title

• H01G9/21 Primary

  Temperature-sensitive devices · CPC title

• H01G9/0029

  Processes of manufacture · CPC title

• C04B35/10

  based on aluminium oxide · CPC title

• H02N11/00 Primary

  Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means (by hydrostatic pressure F03B17/04; {by mechanical means F03G7/10;} by dynamo-electric means, {including arrangements of permanent magnets interacting with other permanent magnets,} H02K53/00) · CPC title