It adopts four-sided swirling air outlet, featuring uniform diffused airflow distribution and low regenerated noise. It is widely applied to large spaces with a floor height of over 3.8m, such as airports, station waiting halls, theaters, gymnasiums, industrial workshops, commercial business halls, large conference rooms, factory reception lobbies and mall shared spaces. In summer air supply, the blades can be adjusted to cooling mode; cold air is delivered in a diffused swirling flow to promote air convection.
Description
Available standard specifications: 425×425, 600×600, 775×775, 1050×1050. Plenum box is available as an optional accessory.
Dimension Drawing of SH-VD Square Swirl Diffuser
Air Supply Pressure Loss and Noise Performance Table
| Specification | Air Volume (m³/h) | H-type Structure | V-type Structure | ||
| Pressure Loss (Pa) | Noise dB (A) | Pressure Loss (Pa) | Noise dB (A) | ||
| 425 | 540 | 20 | 29 | 14 | 33 |
| 720 | 37 | 38 | 26 | 42 | |
| 900 | 56 | 44 | 40 | 47 | |
| 1080 | 80 | 49 | 60 | 52.5 | |
| 1440 | 145 | W57 | 110 | W60 | |
| 600 | 1080 | 25 | 33 | 15.5 | 35.5 |
| 1440 | 43 | 40.2 | 27 | 43.5 | |
| 1800 | 70 | 47 | 40 | 48.5 | |
| 2180 | 100 | 52 | 60 | 54.7 | |
| 2520 | 137 | 56 | 82 | 59 | |
| 2880 | 180 | 60 | 112 | 62.5 | |
| 775 | 1440 | 11 | 25 | 9 | W25 |
| 1800 | 17 | 31 | 16 | 31 | |
| 2160 | 25 | 37 | 22 | 36 | |
| 2880 | 57 | 48 | 47 | 47.5 | |
| 3860 | 82 | 54 | 69 | 54 | |
| 5040 | 130 | W62 | 110 | 60 | |
| 1050 | 2160 | 11 | W25 | 9 | <25 |
| 2880 | 20 | 34 | 16 | 31 | |
| 3860 | 35 | 42 | 28 | 40 | |
| 5040 | 63 | 49 | 48 | 47 | |
| 5460 | 100 | 56 | 80 | 55 | |
Parameter Table of Diffusion Radius under Summer Working Condition
| Specification | Air Volume (m³/h) | 540 | 720 | 900 | 1080 | 1440 | |
| Air Velocity (m/s) | |||||||
| Installation Height (H) | Diffusion Radius (m) | ||||||
| 425×425 | 3.7 | 0.2 | — | 2.1 | 2.56 | 3.13 | 4.17 |
| 0.3 | — | — | — | 2.34 | 3.1 | ||
| 4.7 | 0.2 | — | — | — | 2.25 | 2.94 | |
| 0.3 | — | — | — | — | 2.22 | ||
| 5.7 | 0.2 | — | — | — | — | 2.31 | |
| Specification | Air Volume (m³/h) | 1080 | 1440 | 1800 | 2180 | 2520 | 2880 | |
| Air Velocity (m/s) | ||||||||
| Installation Height (H) | Diffusion Radius (m) | |||||||
| 600×600 | 3.7 | 0.2 | 2.08 | 2.75 | 3.42 | 4.11 | 4.72 | 5.43 |
| 0.3 | — | 2.11 | 2.63 | 3.13 | 3.67 | 4.25 | ||
| 4.7 | 0.2 | — | — | 2.42 | 2.84 | 3.33 | 3.79 | |
| 0.3 | — | — | — | 2.23 | 2.63 | 2.96 | ||
| 5.7 | 0.2 | — | — | — | 2.28 | 2.68 | 3 | |
| 0.3 | — | — | — | — | 2.07 | 2.36 | ||
| Specification | Air Volume (m³/h) | 1440 | 1800 | 2160 | 2880 | 3960 | 5040 | |
| Air Velocity (m/s) | ||||||||
| Installation Height (H) | Diffusion Radius (m) | |||||||
| 775×775 | 3.7 | 0.2 | 2 | 2.47 | 3 | 4 | 5.5 | 7 |
| 0.3 | — | — | 2.25 | 3 | 4.11 | 5.21 | ||
| 4.7 | 0.2 | — | — | 2.18 | 2.93 | 4 | 5.12 | |
| 0.3 | — | — | — | 2.17 | 2.96 | 3.8 | ||
| 5.7 | 0.2 | — | — | — | 2.28 | 3.08 | 3.97 | |
| 0.3 | — | — | — | — | 2.33 | 2.93 | ||
| Specification | Air Volume (m³/h) | 2160 | 2880 | 3960 | 5040 | 5760 | |
| Air Velocity (m/s) | |||||||
| Installation Height (H) | Diffusion Radius (m) | ||||||
| 1050×1050 | 3.7 | 0.2 | 2.11 | 2.82 | 3.87 | 4.89 | 5.71 |
| 0.3 | — | 2.14 | 2.96 | 3.75 | 4.33 | ||
| 4.7 | 0.2 | — | 2.04 | 2.32 | 3.6 | 4.13 | |
| 0.3 | — | — | 2.08 | 2.68 | 3.06 | ||
| 5.7 | 0.2 | — | — | 2.22 | 2.79 | 3.21 | |
| 0.3 | — | — | — | 2.14 | 2.42 | ||
Parameter Table of Diffusion Radius under Winter Working Condition
| Specification Air Volume (m³/h) | 540 | 720 | 900 | 1080 | 1440 | 1800 | 2160 | 2520 | 2880 | 3860 | 5040 | 5160 |
| 425x425 | 2.5 | 3.6 | 4.4 | 5.95 | 8.5 | — | — | — | — | — | — | — |
| 600x600 | — | — | — | 3 | 4.3 | 5 | 6.9 | 8.5 | 10 | — | — | — |
| 775x775 | — | — | — | — | 2.5 | 3.5 | 4.4 | 5.34 | 6.3 | 9 | 12 | — |
| 1050x1050 | — | — | — | — | — | — | 2.6 | 3.1 | 3.5 | 5 | 6.7 | 10 |