Point type optical fiber smoke-sensing fire detector with built-in spectroscopic optical fiber as signal indication

Abstract

The invention discloses a point type optical fiber smoke-sensing fire detector with a built-in spectroscopic optical fiber as signal indication. The point type optical fiber smoke-sensing fire detector with a built-in spectroscopic optical fiber as the signal indication comprises a base shell, a bottom shell and a sensing box; wherein in the sensing box, one end of the box side body is connected to the box top plate, and the other end of the box side body is connected to the base bottom plate in the base shell; a smoke guiding port is opened in the middle of the base bottom plate; in the innercavity of the box, a clamping spacer region between an incident fiber clamping portion and a receiving fiber clamping portion is connected with a smoke inlet in the bottom shell through the smoke guiding port and a bottom shell cavity; an incident / receiving fiber clamping groove is separately formed in the inside of the incident / receiving fiber clamping portion; the depth of the incident fiber clamping groove is smaller than the depth of the receiving fiber clamping groove; the receiving fiber clamping groove includes a receiving fiber clamping cavity and a signal indicating fiber clamping cavity which are communicated; and a base shell signal hole communicated with the signal indicating fiber clamping cavity is formed on the base bottom plate. The design can not only realize the smoke sensing of the optical fiber, but also realize the built-in effect of the signal indicating fiber and reduce the application cost.

Description

technical field [0001] The invention relates to a smoke alarm device, in particular to a point-type optical fiber smoke fire detector with a built-in spectroscopic optical fiber for signal indication, which is particularly suitable for reducing the application cost through the built-in signal indication optical fiber. Background technique [0002] At present, most of the smoke detectors or sensors used for automatic fire alarm at home and abroad are photoelectric, ion or infrared beam (laser) line detectors, etc., and they all use electrical signals and electronic components, so they all have electrical signals. , Electronic components cause potential safety hazards and easy aging defects. For this reason, a new smoke detector has appeared in the prior art, that is, an optical fiber smoke detector, which uses optical fiber sensing technology to detect smoke changes. However, in its application, when an externally displayed signal indicator light is set in order to comply wit...

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Problems solved by technology

[0002] At present, most of the smoke detectors or sensors used for automatic fire alarm at home and abroad are photoelectric, ion or infrared beam (laser) line detectors, etc., and they all use electrical signals and electronic components, so they all have electrical signals. , Electronic components cause potential safety hazards and easy aging defects. For this reason, a new smoke detector has appeared in the prior art, that is, an optical fiber smoke detector, which uses optical fiber sensing technology to detect smoke changes. However, in its application, when an externally displayed signal indicator light is set in order to comply with national regulations, it is necessary to add a separate signal indicating light source and a separate signal indicating optical fiber in addition to the optical fiber smoke detector. One end of the optical fiber communicates with the signal indicating light source, and the other end passes through a long-distance pipe and leads to the appearance of the optical fiber smoke detector to indicate the working status of the optical fiber smoke detector, which not only increases the production cost of the device, but also Added a lot of labor costs—mainly cumbersome and expensive long-distance pipe threading operations

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