Scenario‑Based Parameter Hierarchy for Household Cleaning Appliances: Vacuum, Airflow, 

Noise and Roller‑Brush Adaptation

Shenhe Tech is a Chinese OEM/ODM source factory specializing in R&D and manufacturing of household vacuum cleaners, robot vacuums, mattress vacuums and car vacuum cleaners. Complying with IEC 60312 international test standard, we establish a hierarchical parameter solution based on fluid dynamics and electro‑acoustic principles. Two dominant noise sources are identified for cleaning appliances: mechanical noise induced by high‑speed motor rotation, and aerodynamic turbulence noise generated by high‑velocity airflow shearing. High vacuum is achieved by small‑impeller high‑speed rotation with relatively low power input; large air volume is delivered by large‑sized impeller at low rotational speed yet requires high power consumption, bringing differentiated energy consumption and acoustic performance. Roller‑brush configuration is selected according to dirt profile and hair‑loading condition to prevent tangling failure and secondary contamination.

1. Multi‑pet large‑household model (≤12 kPa, 30‑50 m/s, brushless): Designed for hard floors accumulated with pet hair and granular debris. Adopting low‑vacuum high‑air‑volume configuration with large impeller reduces motor rated speed, fundamentally restraining bearing friction and structural resonance to mitigate whole‑unit vibration and noise pollution. The brushless structure physically eliminates pet‑hair tangling, brush head contamination, sudden load surge and friction abnormal noise. High airflow momentum enables efficient entrainment suction of dust and debris.

2. General household hard‑floor model (≤18 kPa, 20‑35 m/s, with roller brush): Suitable for small households without pets, where electrostatic‑adsorbed fine dust dominates and hair residue is minimal. Operating airflow velocity stays below aerodynamic turbulence threshold. Medium‑vacuum low‑speed working condition greatly attenuates airflow‑shear noise and motor mechanical vibration. Free from long tangled hair, the roller brush avoids clogging and fouling. Mechanical brushing and tapping compensate insufficient dirt‑peeling capacity of medium‑low negative‑pressure airflow, delivering low‑noise and high‑durability routine cleaning performance.

3. Domestic carpet‑dedicated model (≤30 kPa, 30‑50 m/s, with roller brush): Developed for carpet floors embedded with deep‑seated dust and fine grit. High‑speed motor generates high negative pressure penetrating carpet fiber gaps, accompanied by acceptable mild mechanical resonance noise. The high‑speed rotating roller brush beats tangled fibers and dislodges embedded contaminants, while high‑velocity airflow performs pneumatic dust conveying and exhausting. Without heavy pet‑hair interference, the roller‑brush assembly operates stably to guarantee in‑depth carpet cleaning capability.

4. High‑hygiene sanitizing model (≤30 kPa, 40‑60 m/s, brushless): Oriented to high‑cleanliness demands such as maternal‑infant and allergy‑prone households with frequent cleaning cycles and limited hair or granular waste. High‑speed plus high‑power operation generates prominent mechanical vibration and intense wind noise, with fine cleaning performance as priority. Combined high vacuum and large air volume captures dust hidden on floor surfaces and crevices. Brushless design eradicates cross‑contamination caused by micro‑dust and microorganism retention inside brush gaps. Ultra‑high airflow velocity produces powerful aerodynamic impact to replace mechanical brushing and realizes contact‑free high‑precision dust‑free cleaning.

This hierarchical parameter system achieves technical optimization in five dimensions: energy‑efficiency improvement, noise‑source suppression, structural durability, labor‑intensity reduction and anti‑secondary‑pollution, supporting scenario‑oriented and standardized R&D and mass‑production of household cleaning appliances.

Shenhe Tech

R&D Department: Bruce.Hu

Dongguan Shenhe Technology Co.,Ltd