Ceiling Fire Sensor Vent Structure for Moisture-Resistant Smoke Detection
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Solution Overview
Problem
Conventional smoke sensors are prone to reduced detection accuracy due to moisture ingress, particularly from steam, which affects the moisture resistance of fire detection apparatus.
Innovation Solution
A fire detection apparatus with an inflow space and suppression section to prevent moisture from entering the detection space, featuring an outer housing with integrated suppressor walls to control moisture ingress and enhance moisture resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the guide portion allows external gas to flow into the detection space through openings, then smoke detection capability is improved, but moisture resistance deteriorates
Solution Approach 1:
The detection apparatus is divided into distinct functional spaces: an inflow space for gas entry and a detection space for smoke detection. The guide portion is segmented to provide separate pathways that allow smoke to reach the detection space while blocking moisture from entering directly
Solution Approach 2:
The guide portion acts as an intermediary structure between the external environment and the detection space. It mediates the flow of external gas by directing smoke-containing gas toward the detection space while preventing moisture from following the same path
Data Source
AI summary
A sensor 100 is a fire detection apparatus attached to a ceiling surface 900, and includes an inflow space 400 provided inside the sensor 100, a detection space 300 for detecting a detection target, the detection space 300 being provided at a position on a ceiling surface 900 side of the inflow space 400 on the inside of the sensor 100, an inner cover 2 for housing the detection space 300, the inner cover2 being capable of allowing gas containing the detection target to flow into and out of the detection space 300 through the inflow space 400, an outer cover 1 for housing the inner cover 2, the outer cover 1 being capable of allowing the gas to flow into and out of the inflow space 400, and a suppressor 15 provided in the inflow space 400 and formed integrally with the outer cover 1, the suppressor 15 being used to suppress inflow of moisture contained in the gas into the detection space 300.