Fire Detection Apparatus Insect Screen Segmentation and Drainage
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Solution Overview
Problem
Existing fire detectors face issues such as complex insect screen installation, inefficient smoke flow into detection spaces, condensation leading to water accumulation and potential short-circuits, and challenges in improving assembly efficiency and maintaining detection accuracy.
Innovation Solution
A fire detection apparatus with a simplified insect screen attachment mechanism, improved smoke flow pathways using a plurality of ribs to enhance inflow properties, and a non-horizontal side portion design to prevent water accumulation and ensure efficient drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a cylindrical insect screen is used to cover the detection unit, then insect protection is improved, but the installation process becomes complex and time-consuming
Solution Approach 1:
The insect screen is divided into multiple separate panels rather than a single cylindrical structure. These panels can be independently installed by inserting them into corresponding grooves on the detection unit, transforming a complex single-piece installation into a simple modular assembly process.
Solution Approach 2:
The insect screen panels are designed to fit within grooves or channels on the detection unit surface, with each panel nested into its designated location. This nesting approach allows the screens to be securely positioned without requiring complex fastening mechanisms or precise alignment procedures.
2Object-affected harmful factors
If a labyrinth structure is used to prevent insects, then insect protection is improved, but smoke flow efficiency into the detection space deteriorates
Solution Approach 1:
Instead of using a continuous labyrinth structure that blocks smoke flow, the patent employs segmented insect screens with gaps between panels. These screens provide insect protection while allowing smoke to flow freely through the spaces between and around the panels, eliminating the flow restriction caused by traditional labyrinths.
3Ease of manufacture
If the side portion is designed horizontally for easy manufacturing, then manufacturing simplicity is improved, but water accumulation occurs leading to short-circuit risks
Solution Approach 1:
The side portion is designed with an asymmetric inclination rather than a horizontal surface. This inclined design causes water to naturally drain downward due to gravity, preventing water accumulation and the associated short-circuit risks, while still maintaining simple manufacturing processes through standard molding techniques.
4Measurement precision
If multiple ribs are added to enhance smoke inflow, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The ribs are integrated directly into the side portion structure of the detection unit, combining the structural element with the smoke guidance function. This merging approach allows the ribs to enhance smoke inflow and improve detection accuracy without requiring separate components or complex assembly procedures, thus avoiding increased device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables easier and more efficient insect screen installation, improved smoke detection accuracy by enhancing inflow properties, and prevents water-related issues, thus enhancing the usability and reliability of the fire detection apparatus.
Implementation Method 1
a light emitting unit that irradiates the detection space with light, a light receiving unit that receives scattered light of the light irradiated from the light emitting unit
Data Source
AI summary
A fire detection apparatus 1F for detecting a fire in a monitored area, the fire detection apparatus 1F being attached to an installation surface of an installation object, the fire detection apparatus 1F comprises a detection space 60F in which detection of a detection target is performed; an incidence suppressing unit that inhibits ambient light from entering the detection space 60F, the incidence suppressing unit being able to allow a gas containing the detection target to flow into and out of the incidence suppressing unit; an accommodating unit that accommodates the incidence suppressing unit, the accommodating unit being able to allow the gas to flow into and out of the accommodating unit; and a light shielding wall 140F provided to surround the incidence suppressing unit on an inside of the accommodating unit, wherein the incidence suppressing unit includes a first incidence suppressing unit that covers a part of the detection space 60F, and a second incidence suppressing unit provided on an installation surface side of the first incidence suppressing unit, the second incidence suppressing unit covering another part of the detection space 60F, and the light shielding wall 140F is configured such that the light shielding wall overlaps a boundary between the first incidence suppressing unit and the second incidence suppressing unit when viewed in a direction orthogonal to the installation surface.