Vibrating Mesh Smoke Detector Tester Residue
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Solution Overview
Problem
Conventional smoke detector testers face challenges in testing smoke detectors located in difficult-to-reach or hazardous areas due to their design, power requirements, and the use of paraffin-based aerosols, which can leave residues and are costly to implement.
Innovation Solution
A vibrating mesh aerosol generator is used to create a directional, low-power aerosol from a deformable liquid reservoir, which can be integrated with the smoke detector or mounted separately, allowing for remote activation and reducing the need for additional support and cabling, using water with an ionic content to prevent residue formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If paraffin-based aerosol is used in conventional tester, then aerosol stability and persistence are improved, but residue formation on detector and cost increase
Solution Approach 1:
The patent changes the chemical composition parameter of the aerosol liquid from paraffin-based to water-based with ionic content. This parameter change eliminates residue formation while maintaining suitable aerosol characteristics for detector testing, as the ionic water produces aerosol with appropriate particle size and persistence without the harmful residue effects of paraffin.
Solution Approach 2:
The patent employs a disposable deformable liquid reservoir that can be easily replaced. This allows the use of inexpensive water-based aerosol liquid that can be readily discarded after use, eliminating the need for expensive paraffin-based aerosols and their associated residue management issues.
2Ease of operation
If conventional tester with long pole is used, then accessibility to high location detectors is improved, but device complexity and power requirements increase
Solution Approach 1:
The patent divides the testing system into separate functional modules: a handheld aerosol generating unit and a separate power/control unit. This segmentation allows the aerosol generator to be lightweight and portable for easy access to high locations, while power and control functions are handled by a separate unit that can be positioned conveniently.
Solution Approach 2:
The patent introduces a deformable liquid reservoir as an intermediary component that can be easily attached to and removed from the aerosol generator. This intermediary allows for flexible configuration and simplifies the overall device architecture, enabling easy deployment in various locations without complex assembly requirements.
3Reliability
If aerosol spray is directed towards detector element, then testing effectiveness is improved, but power consumption increases
Solution Approach 1:
The patent uses a vibrating mesh aerosol generator that employs mechanical vibration to atomize the liquid. This vibration-based mechanism is more energy-efficient compared to conventional aerosol generation methods, producing effective aerosol with lower power consumption while maintaining reliable testing capability.
Solution Approach 2:
The patent employs a deformable liquid reservoir that utilizes pressure differential and fluid dynamics to deliver liquid to the vibrating mesh. This hydraulic approach reduces the power required for aerosol generation by leveraging the natural properties of the liquid and pressure differentials rather than requiring high-power mechanical pumping.
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 effective, cost-efficient, and reliable smoke detector testing in challenging locations without the need for extensive cabling or high power consumption, while minimizing damage risk and residue formation.
Implementation Method 1
a vibrating mesh type aerosol generator in fluid connection with the liquid reservoir for generating an aerosol of a liquid from the liquid reservoir
Data Source
AI summary
The present invention relates to a fire detector testing device for installation with, or retrofitting to, a fire detector. An aerosol generator in fluid connection with a liquid reservoir directs an aerosol towards a detector element of the fire detector in order to test whether smoke entry has been compromised. The liquid reservoir of the present invention may be installed within a base of the detector, between the base and the detector, or in the detector itself.