Noise Suppression TRIZ Cases
- Window Frame Ventilation Passage With Integrated Noise Absorber
See how a movable window frame creates a ventilation passage with integrated active noise dampi
- Segmented Sound Enclosure for Compressor Noise Attenuation
See how a three-piece clamshell sound enclosure attenuates HVAC compressor noise while enabling
- Portable vocal booth
See how a partition wall with gap and sound-absorbing insert enables variable attenuation for s
- Segmented Soundproof Material Assembly for Air Conditioner Compressors
See how dividing soundproof material into lower and upper segments enables complete compressor
- Modular Sound Enclosure for HVAC Compressor Noise Attenuation
See how a three-piece clamshell sound enclosure attenuates compressor noise while maintaining a
- Acoustic Metamaterial Duct Noise Control Using Micro-Perforated Panels
See how stacked micro-perforated panels with absorptive layers reflect and absorb HVAC duct noi
- Silencer for a ventilation arrangement, muffler assembly, ventilation device and method for manufacturing such a silencer
See how a folded flow path with deflection elements extends acoustic damping length while maint
- Sound-proofing structure and sound-proofing system
See how closely spaced sound-absorbing units shift resonance to low frequencies, enabling compa
- Foldable Interlocking Polymeric Matting for Secure Self-Engagement
Heat-welded polymer monofilament matting uses interlocking ribs, channels, or domes to fold compactly while staying secure for packaging and construction.
- Compressor Sound Enclosure Assembly for HVAC Noise Attenuation
A segmented compressor enclosure with overlapping sections and isolators cuts radiated HVAC noise and vibration from 250 Hz to 2000 Hz.
- Damper Blade Apertures for Low-Noise Two-Mode Airflow Control
Curved damper apertures enable simple open-or-closed airflow control while cutting turbulence, noise, and unnecessary energy use.
- HVAC Airflow Moderating Zone for Fan Inlet Turbulence
Perforated moderating zones and curved flow directors smooth HVAC inlet airflow to cut fan noise, vibration, and turbulence.
- Integrated Acoustic Panel With Local Air Purification
A layered acoustic panel routes purified air through a low-resistance cavity to improve local air quality while damping noise, draught, and bulk.
- Outdoor Unit Refrigerant Component Latching for Vibration Suppression
Elastic tab latching holds refrigerant-circuit components in close contact, suppressing compressor vibration and freeing space for better heat exchange.
- Side Air Intake Vent With Sound Barrier for Refrigeration Cabinets
Offset louvers in a side intake vent and interior sound barrier cut refrigerator machine-compartment noise while preserving cooling airflow.
- HVAC Blower Inlet Baffle for Duct-Bend Noise Suppression
A localized baffle at the fan face counters low-pressure airflow from a sharp duct bend, cutting low-frequency noise and improving blower efficiency.
- Tuned Shunt Tubes for HVAC Airflow Noise Suppression
Tuned shunt tubes suppress 500-1500 Hz HVAC tones while preserving airflow strength and heating or cooling efficiency.
- Multi-Path Muffler Phase Shifting for Acoustic Wave Attenuation
Multiple acoustic paths create phase differences so merged waves cancel, cutting HVAC compressor muffler noise in a more compact structure.