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Temperature-sensing switch for miniature thermal expansion fixed electrical contact

A temperature-sensing switch and electrical contact technology, applied in electrical switches, thermal switch parts, circuits, etc., can solve the problems of slow response speed and large size, and achieve the effect of sensitive temperature and small size.

Inactive Publication Date: 2008-07-23
张陈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of switch is bulky and slow to respond

Method used

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  • Temperature-sensing switch for miniature thermal expansion fixed electrical contact
  • Temperature-sensing switch for miniature thermal expansion fixed electrical contact
  • Temperature-sensing switch for miniature thermal expansion fixed electrical contact

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0008] Embodiment 2 is shown in FIG. 2 , a miniature thermal expansion fixed electric contact temperature-sensitive switch, which is characterized in that the conductive lead wire 2 can pass through the side wall of the sealed casing 3 .

Embodiment 3

[0009] Embodiment 3 See Fig. 3, a miniature thermal expansion fixed electric contact temperature sensitive switch, which is characterized in that a conductive lead 6 is added to detect a secondary short-circuit signal at different temperatures; one or more conductive leads 6 can also be added to pass through Multiple short-circuit signals at different temperatures can be detected at different positions of the sealed casing 3 .

Embodiment 4

[0010] Embodiment 4 See Figure 4, a miniature thermal expansion fixed electric contact temperature-sensitive switch, which is characterized in that the conductive lead wire 2 outside one end of the sealed casing 3 is connected in series with a thermistor R, when a miniature thermal expansion fixed electric contact temperature sensing switch of the present invention After the switch is heated to make the conductive lead 1 and the conductive lead 2 conduct, as the temperature continues to rise, the continuous resistance value change of a miniature thermal expansion fixed electric contact temperature-sensitive switch of the present invention can be detected.

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PUM

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Abstract

The purpose of the invention is to provide a mini-sized heat expansion temperature sensitive switch of fixing electric contacts. The electric contacts in short circuit output switch alarming signals and signals with different resistance values according to heat expansion of conducting fluid. The mini-sized heat expansion temperature sensitive switch of fixing electric contacts is small in volume, fast in response speed, high in sensitivity and wide in detecting temperature scope. The purpose of the invention is to realize the scheme as follows that a mini-sized heat expansion temperature sensitive switch of fixing electric contacts is composed of a sealing housing, heat expansion conducting fluid (which is called conducting fluid as follows) and conducting lead wires, which is characterized in that when the heat expansion conducting fluid is heat-expanded, the volume of the heat expansion conducting fluid is enlarged to reach and surpass different contact positions of the conducting lead wire to conduct the two ends of the conducting lead wire, thereby signaling short circuit signals with different temperatures. Compared with the prior art, the mini-sized heat expansion temperature sensitive switch of fixing electric contacts has the advantages that the invention has small volume, can output the switch alarming signals with different action temperatures, and is sensitive and reliable in action temperature.

Description

technical field [0001] The invention relates to a fire alarm device, which is a miniature heat-expandable fixed electric contact temperature-sensing switch. Background technique [0002] The thermal expansion electric contact temperature switch in the prior art is composed of a conductive liquid, a shell, and a connecting lead in the electric contact temperature switch. When the conductive liquid in the electric contact temperature switch is thermally expanded to a certain extent, due to the conductivity of the conductive liquid, the connecting leads in the electric contact temperature switch are electrically conducted, and the electric contact temperature switch can send out a short-circuit alarm signal of temperature exceeding the limit. This kind of switch has a large volume and slow response speed. Need to have a kind of small volume, reflect the temperature sensitive switch with high sensitivity. Contents of the invention [0003] The object of the present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H37/36H01H29/30G08B17/06
Inventor 张陈王文江
Owner 张陈
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