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Irrecoverable linear temperature sensitive detector and opening alarm method thereof

A technology for temperature-sensitive detectors and open-circuit alarms, which is applied to electric fire alarms, thermometers and instruments using directly heat-sensitive electric/magnetic elements, and can solve false alarms, detect conductor 1 open-circuit faults, and be reliable. Poor performance and other problems, to prevent false alarms and improve the reliability of fire alarms

Active Publication Date: 2007-08-08
SURELAND IND FIRE SAFETY
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  • Claims
  • Application Information

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Problems solved by technology

However, there are the following problems in this non-recoverable linear temperature sensing detector and its disconnection alarm method: during the installation and use of the linear temperature sensing element, once it is subjected to excessive mechanical external force, it is easy to detect the conductor 1 There is an open circuit fault, but at this time the conversion box 4 cannot send an open circuit fault alarm signal, but can only send an open circuit fire alarm signal, which will cause false alarms, so the reliability is relatively poor

Method used

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  • Irrecoverable linear temperature sensitive detector and opening alarm method thereof

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Embodiment 1

[0018] As shown in Figure 2, the non-recoverable linear temperature sensing detector provided by the present invention includes two linear temperature sensing elements A and B arranged in parallel, and terminal resistors 16 respectively connected to one end of the linear temperature sensing elements A and B, 17 and the conversion box 18 connected to the other end of the linear temperature sensing element A and B at the same time; wherein the linear temperature sensing element A consists of two parallel detection conductors 10,11 and the insulation between the detection conductors 10 and 11. Layer 15, and at least one of the detection conductors 10, 11 is a fusible conductor wire; the linear temperature sensing element B is composed of two parallel detection conductors 12, 13 and an NTC arranged in parallel between the detection conductors 12, 13 The characteristic barrier layer 14 is composed. The detection conductors 10 and 11, 12 and 13 can be arranged in parallel, winding o...

Embodiment 2

[0020] As shown in Figure 3, this embodiment is an improvement on the basis of Embodiment 1: the two detection conductors 10 and 12 in Embodiment 1 are replaced by a detection conductor 19. At this time, the detection conductors 11, 19 and The insulating layer 15 forms the linear temperature sensing element A, while the detection conductors 13, 19 and the NTC characteristic barrier layer 14 form the linear temperature sensing element B, and other structures remain unchanged.

Embodiment 3

[0022] This embodiment is an improvement on the basis of Embodiments 1 and 2: any conductor in the detection conductor 12, 13 or 19 is replaced by a thermocouple wire, thereby forming a line type with thermocouple characteristics with another detection conductor The temperature sensing element B and the conversion box 18 are used to detect the state of the linear temperature sensing element A and the voltage (potential) value and voltage value change rate of the linear temperature sensing element B in real time, and other structures remain unchanged.

[0023] When the linear temperature sensing elements A and B in the non-recoverable linear temperature sensing detector provided by the present invention are heated and reach a certain temperature, since one of the two detection conductors 10 and 11 of the linear temperature sensing element A is Fusible conductor wire, so the temperature of the fusible conductor wire inside the heated part will rise accordingly. When the temperatu...

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Abstract

This is a non-recoverable linear thermal detector and alarm circuit method. The detector consists of two parallel linear temperature perceptual elements A, B, the resistor connected at one end of the linear temperature perception components A, B and the converter boxes connected at the other end of the linear temperature perception components A, B. The linear temperature perception component A consists of two parallel detection conductors and the insulation layer between the parallel detection conductors, and at least one detection conductor is easy fuse wire. The linear temperature perception component B consists of two parallel detection conductors and the NTC barrier layer between the parallel detection conductors. The non-recoverable linear thermal detector and alarm circuit method in the invention can issue different alarm signals according to the open-circuit failure or open-circuit fire. So it can prevent fault alarm caused by failure of linear temperature-aware components circuit in the normal temperature, thus improving the reliability of alarm detector.

Description

technical field [0001] The invention relates to a non-recoverable linear temperature-sensing detector and a circuit breaker alarm method thereof, in particular to a non-recoverable linear temperature-sensing detector and a circuit breaker alarm method capable of preventing false alarms and thus having high reliability method. Background technique [0002] Linear temperature detector is a kind of fire detector widely used at present. It is mainly divided into recovery type and non-recoverable type. It usually consists of a linear temperature sensing element, a terminal resistor connected to one end of the The other end of the type temperature sensing element can detect the alarm electrical parameter (or sampling value) on the linear temperature sensing element in real time, and output the conversion of the fire alarm signal according to the size or change value of the alarm electrical parameter (or sampling value) box composition. Chinese invention patent application No. 20...

Claims

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Application Information

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IPC IPC(8): G08B17/06G01K7/00
Inventor 张卫社李刚进
Owner SURELAND IND FIRE SAFETY
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