Centrifugal HEPA Fume Extractor
High-Static-Pressure Snail-Shell Air Scrubber
Custom 3D-printed centrifugal volute and radial impeller delivering high static pressure through multi-stage HEPA and activated carbon filtration.
DOMAIN
MECHANICAL
DATE RECORD
2024-08-05
DEPLOYMENT STATUS
■ COMPLETED
CORE TECHNOLOGIES
Conventional desktop solder extractors utilize standard axial fans designed for free-air displacement. Once dense filtration media such as True-HEPA pleated matrices and activated carbon pellet beds are introduced, system static resistance rises drastically. Axial blades stall under backpressure, collapsing volumetric throughput.
- ■Volute Geometry: Engineered a custom logarithmic spiral snail-shell expansion casing converting dynamic fluid velocity off the impeller tips into static pressure.
- ■Radial Impeller Design: Modeled backward-curved radial impeller vanes optimized for torque transfer without stalling the high-RPM motor.
- ■Dual Chamber Sealed Housing: Designed airtight interlocking filtration bays to prevent unfiltered bypass of solder rosin acid and VOCs.
- ■Articulated Extraction Arm: Integrated a segment-jointed intake nozzle positioning vacuum capture directly above the solder joint.
Prototyped via multiple additive manufacturing revisions to tune the radial clearance gap between rotating blade tips and stationary volute tongue down to under 0.8 mm, eliminating internal backflow leakage and achieving sustained capture velocity.