Detector

摘要

A detector includes a smoke detecting section that includes a light-receiving unit at a position at which the light-receiving unit does not directly receive light emitted by a light-emitting unit in a chamber in which a labyrinth for preventing light from directly entering from the outside and an insect net covering the rim of the labyrinth are provided, the light-receiving unit receiving light scattered by smoke flowing into the chamber. An opening hole is formed open in the surface of the cover receiving hot air current, of the detector. In the cover behind the opening hole, an electrochemical gas sensor is placed to bring gas generated by a fire through the opening hole into contact with an electrolyte solution to detect the gas by an electrode.

主权项

1. A detector for detecting a fire and gas, comprising:
a detector cover that receives hot air current; a fire sensor, placed inside the detector cover, for detecting a fire; and an electrochemical gas sensor, placed inside the detector cover, for detecting gas with an electrode by contacting the gas with an electrolyte solution, wherein, in the detector cover, a container for containing a detecting space section for detecting a fire by the fire sensor is provided and an intake for causing the hot air current to flow into the container is formed, and wherein an opening hole for introducing gas included in the hot air current into the electrochemical gas sensor is formed so as to be open to a flow path of the hot air current from a surface of the detector cover through the intake to the detecting space section, wherein the opening hole is formed in a plate-like body that separates the electrochemical gas sensor and the container, wherein the fire sensor is a smoke sensor that optically detects smoke, wherein the detecting space section is a chamber serving as a smoke detecting space, wherein the container is a chamber container for containing the chamber, wherein the intake is a smoke intake for causing smoke included in the hot air current to flow into the chamber container, and wherein the opening hole is formed at a position communicated with a space section between the chamber and the smoke intake in the chamber container so that the hot air current flows through the smoke intake and the opening hole sequentially and without routing through the chamber to reach the electrochemical gas sensor.