19/05/2026
🌏Fan for Precision Air Conditioning – How Uniform Is the Internal Airflow?
The Achelous series EC630 airfoil centrifugal plug fan is designed specifically for precision air conditioning applications.
👉Uniform Static Pressure Distribution
From the blade leading edge to the trailing edge, the pressure difference between the pressure side and suction side transitions smoothly, with no sharp pressure gradients or local low-pres .
The isobars are well‑arranged and properly spaced, and the airflow undergoes a stable pressurization process inside the impeller, with no pressure discontinuities caused by separation bubbles or shock waves. This uniform static pressure distribution avoids vortex dissipation caused by pressure imbalance and reduces friction losses due to boundary layer thickening on the blade surfaces.
👉Smooth Streamlines, No Separated Vortices
Throughout the flow passage, the velocity vectors transition smoothly, and the velocity gradient between the pressure side and suction side is uniform, with no separated vortices, flow recirculation, or local low‑velocity regions.
Thanks to the precise aerodynamic design of the airfoil profile — smoothly rounded leading edge, well‑distributed mid‑section loading, and a trailing edge that guides flow naturally — the airflow follows the blade contour smoothly, effectively suppressing boundary layer separation and secondary flow losses. The vortex‑free characteristic ensures high efficiency, low vibration, and a wide stable operating range, while also reducing broadband vortex noise.
👉Vortex Cores Confined to Walls, Vortex‑Free Mainstream
Only a few small local vortex cores appear near solid walls (front disk, blade surfaces, motor housing), while the mainstream region inside the impeller flow passage is completely free of vortex cores, with smooth streamlines and a well‑structured flow field.
Three‑dimensional flow losses are minimal; the vortex cores are strictly limited to a thin near‑wall layer and are weak in intensity.
This indicates that the blade airfoil design, the geometric matching between the impeller and the front/rear disks, and the inlet/outlet flow conditions have all been finely optimized, effectively suppressing common three‑dimensional flow structures such as passage vortices, tip leakage vortices, and corner separation.
With a smooth, vortex‑free mainstream, the airflow transfers energy in a nearly irrotational, high‑efficiency manner.
