Thermocouple connection structure

TWM688197UActive Publication Date: 2026-10-01TRONIC PURITY INC
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Patent Information

Application Number
TW115205779
Authority / Receiving Office
TW · TW
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2026-06-23
Publication Date
2026-10-01
Estimated Expiration
2036-06-22

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    Figure TWG2TB001914467_003
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Abstract

A thermocouple connection structure includes a first thermocouple wire, a second thermocouple wire, and a glass capillary tube. A portion of the first thermocouple wire and a portion of the second thermocouple wire are joined together to form a temperature measuring section of a predetermined length. The glass capillary tube is sleeved around the temperature measuring section to maintain electrical insulation between the temperature measuring section and the external environment. The small diameter, high insulation, and high temperature resistance of the glass capillary tube allow this thermocouple connection structure to be configured in confined spaces for temperature measurement, thus improving installation flexibility.
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Claims

1. A thermocouple connection structure, comprising: a first thermocouple wire; a second thermocouple wire, a portion of the second thermocouple wire being joined with a portion of the first thermocouple wire to form a temperature measuring section, the temperature measuring section having a predetermined length; and a glass capillary tube sleeved around the temperature measuring section.

2. The thermocouple connection structure as claimed in claim 1, wherein the first thermocouple wire and the second thermocouple wire are twisted together to form the temperature measuring section.

3. The thermocouple connection structure as claimed in claim 2, wherein the first thermocouple wire and the second thermocouple wire form multiple contact positions along the length of the temperature measuring section.

4. The thermocouple connection structure as described in claim 1, wherein the outer diameter of the glass capillary is not greater than 1 mm.

5. The thermocouple connection structure of claim 1, wherein the glass capillary is made of glass, quartz, fused silica, glass fiber composite material or a combination thereof.

6. The thermocouple connection structure as claimed in claim 1, wherein the length of the glass capillary at least covers the entire length of the temperature measuring section.