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Passive thermal-sensitive fire extinguishing starter

A starter and passive heat technology, applied in fire rescue, etc., to achieve the effects of enhancing sensitivity, simplifying structure, and improving sealing performance

Inactive Publication Date: 2011-10-19
XIAN ELECTRO MECHANICAL INFORMATION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this temperature sensing element has not been used in the fire starter

Method used

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  • Passive thermal-sensitive fire extinguishing starter
  • Passive thermal-sensitive fire extinguishing starter
  • Passive thermal-sensitive fire extinguishing starter

Examples

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Embodiment Construction

[0016] see figure 1 , it has a shell, the shell of this example is composed of a base 1 and an upper cover 2 fastened together, a magnetic power supply consisting of a magnetic bar 3 and an armature 4 is installed on the central axis of the shell, and the armature 4 sets On the magnetic rod 3, the armature 4 is fixed in the armature cavity formed by the fastening of the base 1 and the upper cover 2, so that it is fixed in the casing, and the magnetic rod 3 is arranged to move axially in the casing The stroke cavity 5 enables the magnet bar 3 to move axially; a spring 6 is installed at the tail of the magnet bar, and in order to enable the spring 6 to be installed stably, a reduced diameter is provided at the tail end of the magnet bar 3 The round platform 3-1 is provided with a circular groove 2-1 on the inner top wall of the upper cover, the lower end of the spring 6 is sleeved on the reduced-diameter round platform 3-1, and its upper end extends into the circular groove 2 I...

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Abstract

The invention provides a passive thermal-sensitive fire extinguishing starter. The fire extinguishing starter is provided with a housing; a magnetic power source consisting of a magnetic bar and an armature arranged on the neutral axis position of the housing; the magnetic bar can move relatively to the armature; a spring is mounted at the tail part of the magnetic bar; a pull rod is fixedly connected to the tail end of the magnetic bar; the tail part of the pull rod is extended from the upper end surface of the housing; and a fusible alloy locating structure capable of axially locating the pull rod is arranged at the extending part. The magnetic bar is located in an upper contracting position in the housing by the fusible alloy at the normal temperature; and when the ambient temperature reaches the preset temperature, the fusible alloy melts, so that the magnetic bar is released and moves downwards under the action of the spring, and then, the magnetic bar passes through the armatureto generate the induction starting current, thereby completing the task of starting the passive thermal-sensitive fire extinguishment. The invention systematically integrates the fusible alloy and the magnetic power source, thereby not only expanding the temperature-control range of a starter, but also greatly simplifying the structure and further improving the operating reliability of a magneticpower source.

Description

technical field [0001] The invention relates to a heat sensitive fire extinguishing starter, in particular, it is a passive heat sensitive fire extinguishing starter. Background technique [0002] At present, the supersonic dry powder fire extinguisher has been widely used, and the fire extinguisher is started by igniting the solid fuel with an electric ignition head. In the prior art, there are two types of starters for supersonic dry powder fire extinguishers, one is an active starter and the other is a passive starter. Whether it is an active starter or a passive starter, when starting, the starter needs to provide a starting current to the electric ignition head. The Chinese patent 200810150150.5 that the applicant applied for earlier is a passive heat-sensitive fire extinguishing starter. The starter adopts a structure combining a magnetic power supply and a memory alloy (thermal sensor). The magnetic rod is locked at the retracted position. When the ambient temperatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C37/12
Inventor 雷军命石宣泉杨士国李亚男
Owner XIAN ELECTRO MECHANICAL INFORMATION INST
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