Rapid response on-off value linear temperature-sensitive detector and alarming method

A temperature-sensing detector and fast-response technology, applied in electrical fire alarms, thermometers and instruments using electrical/magnetic components directly sensitive to heat, etc., which can solve the problem of slow response time, low alarm sensitivity, and mechanical damage. and other problems, to achieve the effect of simple structure and high alarm sensitivity

Inactive Publication Date: 2008-08-27
张陈
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of this detector are: the alarm method is simple, and the alarm temperature has nothing to do with the length of use and the use environment. Body short circuit distinction, easy to cause false alarms; when the temperature-sensing cable sheath layer is thick, the alarm sensitivity is low and the response time is slow

Method used

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  • Rapid response on-off value linear temperature-sensitive detector and alarming method

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Embodiment Construction

[0008] A fast-response switching value line type temperature-sensitive detector and an alarm method, the detector example 1, see Fig. 1, includes that the two ends of the temperature-sensitive cable are respectively connected with the electrical signal processing device 5 and the terminal resistors R1, R2, and the terminal resistors The resistance values ​​of R1 and R2 can be the same or different, and the resistance value is preferably 50Ω~50MΩ to form a closed-circuit resistance signal acquisition circuit, which is characterized in that the temperature-sensing cable is composed of elastic metal conductor 1, elastic metal conductor 2, and elastic metal conductor 3 Cover with a fusible or fusible insulating material layer 4, and three covered wires are twisted together in a twisted and twisted way, and the twisted winding pitch is preferably between 20mm and 200mm to make a temperature-sensitive cable.

[0009] A fast-response switching value line type temperature-sensitive det...

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Abstract

The invention provides a quick response switching-value linear temperature-sensing detector and a warning method, implementing a warning of a switching-value fixed-temperature, an error output of short circuit, an error output of open circuit, and an error output of current failure of an electric signal processing device. The detector forms a closed circuit signal collection circuit by two ends of a temperature-sensing cable to be respectively connected with the electric signal processing device and a terminating resistance, and a resistance value of the terminating resistance R is optimized from 50 ohm to 50M ohm. The invention is characterized in that the temperature-sensing cable has a structure of three elastic metal conductors which are respectively covered by fusible or insulating material layers with Vicat softening points from 40 DEG C to 180 DEG C, three cores of conductors with coatings are intertwisted or wound together, a pitch of the intertwisting or winding is optimized from 20mm to 200mm, wherein one elastic metal conductor is used as a common port, while the other two metal conductors are used as a detecting end 1 and a detecting end 2 respectively.

Description

technical field [0001] The invention relates to a fire alarm device, a fast-response switching value line type temperature-sensitive detector and an alarm method. technical background [0002] The non-recoverable switching value linear temperature detector in the prior art is a fire detector with a wide range of uses. The non-recoverable switching value linear temperature detector cable currently used: consists of two or more wires respectively Elastic metal conductors covered with fusible plastic are twisted together. When the temperature-sensing cable is heated and reaches a higher temperature, the fusible plastic softens or melts, and under the elastic force of the elastic metal conductors, two or more elastic metal conductors short-circuit, and the electrical signal processing device sends out a fire alarm signal. The advantages of this detector are: the alarm method is simple, and the alarm temperature has nothing to do with the length of use and the use environment. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/06G01K7/16G01R31/02G01R19/165
Inventor 张陈王文江
Owner 张陈
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