Fire Extinguisher Redesign Maddie Burke Design Project Management Student Initiated Projects: R12900 Spring

Functional Timeline FIRE REMOVE EXTINGUISHER REMOVES SAFETY PIN ALARM ON BOX GOES OFF PRESS TRIGGER ACTUATES VALVE RELEASES WATER REMOVE CYLINDER REFILL CYLINDER WITH WATER RELOAD EXTINGUISHER BOX AUTOMATICALLY PRESSURIZES CYLINDER OF H20 INDICATORS SHOW ‘READY TO USE’ RELOAD EXTINGUISHER INTO BOX INDICATORS CHANGE TO ‘USED’

Functional Flow Decomposition EXTINGUISH RELOAD TRIGGER SPRAY FORCE EXTINGUISHER INTO BOX REMOVE FROM BOX REMOVES SAFETY CHANGES INDICATORS CONVERT FORCE TO OPEN VALVE SPRAYS OUT WATER RESET INDICATORS EMPTY H2O CYLINDER REPRESSURIZE WATER RELOAD SAFETY RELOADED EXTINGUISHER WATER INTO CYLINDER CYLINDER INTO EXTINGUISHER

Fire Extinguishers Materials Spray time Size Weight Price Rating Water amount Spray range Benchmarks: Fire Extinguishers Constraints Under 15 lbs 2.5 gallons of water Rechargeable Cost to design

Benchmarks: Intentionally Intuitive Devices

Metrics and Specifications

Difficulty of Metrics and Specifications

House of Quality Cross Linking every customer need is met by some engineering specification Some x-ed off as “related” if not directly dependent on one another

Suggested Staffing Requirements

Project Scope Feedback Staffing: industrial design student would bring a unique set of skills to the design Safety: there will have to be some sort of testing box in case of explosion of the pressurized vessel during tests Specifications: intuitive design aspects will be hard to quantify, a wide range of user testing will be needed Scope: project would include extinguisher design and box design, could be split into different jobs (as shown in the staffing slide) so multiple things can be worked on at once

QUESTIONS?