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Liquid expansion thermometer and manufacturing method thereof

A technology of liquid expansion and manufacturing method, which is applied in the direction of thermometers, thermometers, instruments, etc. based on the expansion/contraction of materials, which can solve the problems of long manual operation and increase the production cost of thermometers.

Active Publication Date: 2021-07-13
艾乐法国公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, such a process requires a large number of relatively long and delicate manual operations, which increases the production cost of the thermometer

Method used

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  • Liquid expansion thermometer and manufacturing method thereof
  • Liquid expansion thermometer and manufacturing method thereof
  • Liquid expansion thermometer and manufacturing method thereof

Examples

Experimental program
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Embodiment Construction

[0050] equipment

[0051] exist figure 1 The thermometer 1 shown in includes a capillary 2 having a reservoir 3 filled with a thermometric liquid 4 and is associated with a scale 5 printed on a label 6, the assembly being housed in a tube made of transparent material In the housing 7.

[0052] The capillary 2 is linear. Its inner core 21 , preferably of circular cross-section, has a diameter of approximately 0.30 to 0.60 mm.

[0053] Its outer profile can be circular section, prismatic or other shapes, and its diameter (or maximum dimension) can be between 2 to 3mm; This outer profile preferably includes a facet (or plane), so that fix with scale 5 label6.

[0054] The cross-section of the capillary is preferably triangular.

[0055] As a result, the label 6 can be effectively fixed by gluing on one of the three faces of the triangular portion. In addition, the triangular cross-section optimizes the level reading of thermometric liquids.

[0056] The length of the cap...

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PUM

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Abstract

The invention relates to a liquid expansion thermometer (1), comprising: - a reservoir (3) for a temperature-measuring liquid (4), integrally formed with the first end (22) of a capillary (2); housing (7), comprising a first end (74) of the housing and a second end (76) of the housing; and a scale (5) facing at least a portion of said capillary (2); said reservoir The instrument (3) comprises an outer surface (33) extending to the inner surface (721) of the second end (76) of the tubular housing (7), and the thermometer comprises a fixing device (8) which is a On the one hand for fixing said inner surface (721) of the second end of the tubular housing (7) and on the other hand for fixing said outer surface (33) of said reservoir (3) or said capillary (2 ).

Description

technical field [0001] The present invention relates generally to the field of temperature measuring instruments. [0002] More particularly, the present invention relates to liquid expansion thermometers and methods of making such thermometers. Background technique [0003] A method of manufacturing a liquid expansion thermometer is well known which involves forming a blank from a tube of transparent material, in particular glass, comprising a main body portion (smaller diameter tube portion) extending from a plunger, said Both ends of the blank are open. [0004] In parallel, starting from a capillary open at both ends, a circular flange is formed at one of said open ends, the outer diameter and play of which correspond to the inner diameter of the plunger. [0005] The end of the capillary with the flange is introduced into the blank until it is just above the free end of the plunger; the outer border of the flange is secured to the inner wall of the plunger. [0006] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K5/02G01K5/08
CPCG01K5/025G01K5/08
Inventor 让-马尔卡·阿拉
Owner 艾乐法国公司