Sample container and thermal analyzer

Patent metadata

Field	Value
Publication number	US-11143541-B2
Application number	US-201715468187-A
Country	US
Kind code	B2
Filing date	Mar 24, 2017
Priority date	Mar 25, 2016
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

A sample container of a thermal analyzer that performs thermogravimetry or calorimetry includes a bottomed cylindrical body portion and a cover portion abutting against an opening of the body portion and covering at least a part of the opening. The cover portion includes a first cover portion abutting against an edge portion of the opening and having a second opening in a part of the first cover portion, and a second cover portion separated from the first cover portion in an axial direction of the body portion so as to cover at least a part of the second opening.

First claim

What is claimed is:

1. A thermal analyzer that performs thermogravimetry or calorimetry, comprising:
a sample container; and
a heating furnace that surrounds the sample container,
wherein the sample container comprises:
a body portion that has a bottomed cylindrical shape;
a first cover portion; and
a second cover portion, the first cover portion being disposed between the body portion and the second cover portion, and

wherein, in the sample container,
the first cover portion abuts against an edge portion of a first opening of the body portion while covering at least a part of the first opening,
the second cover portion has a circular shape and includes a plurality of second openings arranged along a circumferential direction of the second cover portion, the second cover portion being separable from the first cover portion, and
the first cover portion includes a third opening, the third opening at least partially overlapping the first opening of the body portion.

2. The thermal analyzer according to claim 1 ,
wherein, when viewed from sample height hs that is 0.7 of height h from a bottom portion of an inner surface of the body portion to the first opening, a maximum solid angle Ωm facing an outside from the first opening, and each of the second openings is not larger than 0.3 of a maximum solid angle Ω 0 facing the outside from the sample height hs in a state where the first and second cover portions are removed.

3. The thermal analyzer of claim 1 , wherein the second cover portion includes a circular part having a diameter smaller than a diameter of the first cover portion.

4. The thermal analyzer of claim 3 , wherein the second cover portion first includes a plurality of arm parts extending from the circular part, the plurality of arm parts abutting against the first cover portion when the second cover portion is attached to the first cover portion.

Assignees

• Hitachi High Tech Science Corp

Inventors

• Yamada Kentaro
• Takagi Yasuyuki

Classifications

• G01N25/20 Primary

  by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity (calorimeters per se G01K) · CPC title

• B01L3/04

  Crucibles · CPC title

• G01N5/04

  by removing a component, e.g. by evaporation, and weighing the remainder · CPC title

• G01N5/00 Primary

  Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid (G01N9/00 takes precedence {; weighing per se G01G}) · CPC title

• G01G9/00 Primary

  Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00 · CPC title