Smoke Alarm Offset Detection Chamber for Improved Smoke Entry
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Solution Overview
Problem
Existing residential smoke alarms have components surrounding the optic chamber that inhibit the flow of smoke, hindering efficient detection.
Innovation Solution
A smoke alarm design with a housing that includes an optical chamber assembly with a single smoke entry location and a shield offset from the housing, allowing for enhanced smoke flow into the chamber for improved detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If components surround the optic chamber, then the structure is compact, but smoke flow into the chamber is inhibited
Solution Approach 1:
The housing is divided into two distinct parts: a first housing portion containing the optic chamber and electronic components, and a second housing portion containing the smoke entry opening. This segmentation allows the optic chamber to be isolated from smoke-inhibiting components while maintaining a compact overall structure.
Solution Approach 2:
The optical chamber assembly is positioned to extend in a direction away from the smoke entry opening, utilizing spatial dimensionality to separate the smoke intake path from the detection chamber. This dimensional arrangement allows smoke to flow freely into the chamber without being blocked by surrounding components.
2Measurement precision
If multiple light emitters and receivers are used, then detection sensitivity is improved, but device complexity increases
Solution Approach 1:
Multiple light emitters and receivers are integrated into a single optical chamber assembly that functions as one unified detection system. The emitters and receivers are arranged to work together in coordination, with light paths designed to optimize smoke particle detection while managing the complexity through systematic integration.
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 design optimizes smoke entry into the chamber, enabling more efficient detection of smoke and fire conditions by the optical chamber assembly.
Implementation Method 1
When smoke is present in the optic chamber, more light is received at the light receiver due to light being reflected from the smoke particles
Implementation Method 2
at least one light device for evaluating particles is arranged within an interior chamber of the optical chamber assembly
Data Source
AI summary
A smoke alarm includes a housing having a generally hollow interior, a printed circuit board arranged within the interior of the housing, and an optical chamber assembly connected to the printed circuit board. The optical chamber assembly has an interior chamber and at least one smoke entry location. A substantial entirety of the interior chamber is external to the housing. At least one light device for evaluating particles is arranged within an interior chamber of the optical chamber assembly.