Chimney Access Device Flexible Hose Nozzle Insertion
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Solution Overview
Problem
Existing chimney fire extinguisher devices require cutting apertures in the chimney wall for installation and have different attachment methods, posing safety risks and inefficiencies in directing extinguishing agents into the chimney.
Innovation Solution
A chimney access device comprising a rigid tube and resilient connection tubing, allowing the fire extinguisher nozzle to be inserted for spraying extinguishant into the chimney without needing pre-cut apertures, with a bent portion to direct the spray vertically and materials for thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a small diameter narrow conduit is used to direct extinguishant into the chimney, then the device can be installed through a pre-cut aperture, but the installation process requires cutting apertures in the chimney wall which creates safety risks and potential chimney damage
Solution Approach 1:
The invention extracts the need for pre-cut apertures by using a flexible hose that can be inserted through the existing fireplace opening. The hose is pulled through the chimney from the interior or fed from the exterior, eliminating the harmful aperture cutting process while maintaining the conduit function for extinguishant delivery.
Solution Approach 2:
The invention changes the physical parameter of the conduit from rigid small-diameter tubing to flexible hose material. This parameter change allows the conduit to be installed through existing openings without cutting, while maintaining sufficient structural integrity to deliver extinguishant effectively into the chimney.
2Strength
If a rigid tube is used to direct extinguishant, then the structure is simple and strong, but it cannot be easily inserted or directed into the chimney without pre-cut apertures
Solution Approach 1:
The invention changes the physical parameter of the conduit from rigid to flexible by using hose material. This allows the conduit to be easily inserted, bent, and directed into the chimney through existing openings while maintaining sufficient structural integrity through proper hose selection and support mechanisms.
Solution Approach 2:
The flexible hose can be bent and curved to navigate the chimney structure, allowing it to be directed properly into the chimney flue. The curvature capability of the hose enables easy installation and positioning without requiring straight rigid tubes and precise pre-cut apertures.
3Ease of manufacture
If the fire extinguisher is attached to a custom-built device with different attachment methods, then the device can be installed, but the portable construction using standard fire extinguishers is not possible
Solution Approach 1:
The invention makes the attachment mechanism universal by adapting to standard fire extinguisher configurations. The flexible hose can be connected to various fire extinguisher nozzle types, and the system can be positioned in multiple ways (exterior feeding, interior pulling, rooftop insertion), making it versatile and compatible with standard fire extinguishers rather than requiring custom-built devices.
Solution Approach 2:
The invention introduces dynamic positioning capabilities where the fire extinguisher can be attached and positioned in multiple locations and orientations. The flexible hose accommodates movement and repositioning, allowing the system to adapt to different installation scenarios and work with standard fire extinguishers in various configurations.
Data Source
AI summary
A chimney access device has a rigid tube and a resilient connection tubing. The resilient connection tubing is connected with the proximal end of the rigid tube. The nozzle of the fire extinguisher may be inserted into the resilient connection tubing for spraying the extinguishant from the fire extinguisher through the rigid tube and into a chimney.