Fire Detection Apparatus Stepped Control Structure
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Solution Overview
Problem
Existing fire detection apparatuses face challenges in accurately guiding heat air currents to heat detection elements, which affects the reliability and precision of fire detection.
Innovation Solution
A fire detection apparatus with a heat detection element and a control structure featuring a stepped portion that guides heat air currents along its outer peripheral wall, ensuring that at least part of the detector is positioned lower than the uppermost part of the stepped portion, combined with a labyrinth portion to direct smoke particles into the detection space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the heat detection element is positioned to protrude from the base portion for direct heat detection, then the detection sensitivity is improved, but the reliability of guiding heat air current to the detector is insufficient
Solution Approach 1:
The patent introduces a control structure with a stepped portion as an intermediary between the heat air current and the heat detection element. The stepped portion acts as a mediator that receives heat air current from the monitoring area and directs it to the detector, ensuring reliable heat transfer while maintaining the detector's protruding position for sensitivity.
Solution Approach 2:
The control structure extends in the height direction (vertical dimension) with a stepped portion that has different elevation levels. This dimensional extension creates a guided pathway for heat air current to reach the detector, solving the guidance reliability issue while preserving detection sensitivity.
2Productivity
If the detector is positioned at the uppermost part of the stepped portion for optimal heat exposure, then the heat detection efficiency is improved, but the detector becomes vulnerable to harmful environmental factors
Solution Approach 1:
The patent positions only part of the detector at the uppermost part of the stepped portion while keeping other parts at lower positions. This local positioning strategy allows the detector to efficiently receive heat air current at its most sensitive area while protecting other parts from environmental harm.
Solution Approach 2:
Instead of placing the entire detector at the highest position for maximum heat exposure, the patent inverts the approach by positioning only the critical detection area at the uppermost part while protecting the rest. This inverted strategy maintains detection efficiency while reducing vulnerability.
3Reliability
If the control structure is designed with a high stepped portion to guide heat air current effectively, then the heat guidance reliability is improved, but the device complexity increases
Solution Approach 1:
The control structure is segmented into a stepped portion with multiple levels rather than a single complex structure. This segmentation simplifies the overall design by breaking down the heat guidance function into discrete, manageable steps that are easier to manufacture and maintain.
Solution Approach 2:
The patent optimizes the parameters of the stepped portion (height, width, spacing) to achieve effective heat air current guidance with minimal structural complexity. By carefully selecting these parameters, the design achieves reliable heat guidance without requiring overly complex control structures.
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
This configuration reliably guides heat air currents and smoke particles to the detection element, enhancing the accuracy and reliability of fire detection by minimizing temperature variations and ensuring consistent detection across different air current directions.
Implementation Method 1
a heat detection element configured to detect heat of a heat air current generated in association with a fire
Implementation Method 2
heat air current generated in association with a fire
Implementation Method 3
the control structure being configured to guide the heat air current to the detector of the heat detection element along an outer peripheral wall of the stepped portion
Data Source
AI summary
Provided is a sensor 100 provided with a detection element 700 for detecting heat of a heat air current generated in association with a fire in a monitoring area, in which the detection element 700 is disposed so that a detector protrudes from a predetermined base portion of the sensor 100, the sensor 100 includes a control structure that has a stepped portion higher than the predetermined base portion, the control structure being configured to guide the heat air current to the detector of the detection element 700 along an outer peripheral wall of the stepped portion, at least a part of the detector of the detection element 700 is located on a base portion side lower than the uppermost step of the stepped portion, a labyrinth portion guides the heat air current to the detector of the detection element 700 along a side end portion corresponding to an outer peripheral side of the stepped portion of a plurality of partition walls, and the heat air current containing smoke introduced into the labyrinth portion is introduced to the smoke detector disposed in a lower part of the control structure via an opening penetrating the stepped portion of the control structure from an upper surface to a lower surface side.