With the advancement of technology, high-efficiency fan blades can generate the same or even more air volume with fewer blades. Just like today's automobile industry, the displacement of automobile engines is gradually reduced, but the power and torque of the engine are still sufficient to drive a large-scale automobile. Similarly, as long as the same air volume is produced and the fan covers the same area, the fewer the number of fan blades, the higher the wind efficiency of the fan blades. Even in order to save resources and protect the environment, it should be encouraged to use fewer blades, and the index to measure the pros and cons of super large ceiling fans should be the air volume and coverage area generated under comparable conditions (same speed and same diameter).
Blades manufactured by the stamping process differ from fan blades manufactured by other extrusion processes. Its blades radially narrow, thin and slightly twisted. These characteristics make it possible to generate a greater volume of air under the same conditions.
We know that in the case of the same speed, the linear speed of each point in the radial direction of the blade is very different. Taking a super large ceiling fan with a diameter of 7.3 meters as an example, the linear speed of the blade tip is 7 times that of the blade root. With extruded blades of the same width, such a large velocity difference would necessarily result in extremely inefficient wind at the root of the blade with extremely low linear velocity, often resulting in a central cavity.
However, the width of the blade root of the wind-driven blade is wider at the blade root of the low linear speed, and the blade tip blade width of the high linear speed blade is relatively narrow, so the blade with the high linear speed is used for air supply. Therefore, the problem of uneven air supply in the radial direction of the blade is obviously improved, and the wind efficiency of the blade is improved.
In addition, the blades gradually become thinner and slightly twisted in the radial direction, so that the ratio of the static pressure to the dynamic pressure of the blades gradually changes, which optimizes the air supply efficiency and increases the air supply volume.
Kale fans Eurus series 5 blades 24ft ceiling fan，he maximum torque reaches 300N.m, and the full-load air volume reaches 14800m³/min, which exceeds the air volume of conventional products by more than 30%. It can promote the circulation of space airflow at higher efficiency, achieve the purpose of cooling personnel, and improve environmental comfort.
|
Model |
Size |
Air volume |
Max speed |
Fan weight |
Power |
Full load current |
Noise level |
|
HVLS-D6AAA73 |
24ft（7.3m） |
14800m³/min |
56RPM |
135kg |
1.5Kw |
6.8Amps/220V |
<40.0dB（A） |
|
HVLS-D6AAA61 |
20ft（6.1m） |
12900m³/min |
60RPM |
129kg |
1.1Kw |
5.0Amps/220V |
<40.0dB（A） |
|
HVLS-D6AAA55 |
18ft（5.5m） |
12200m³/min |
65RPM |
120kg |
0.9Kw |
4.1Amps/220V |
<40.0dB（A） |
|
HVLS-D6AAA49 |
16ft（4.9m） |
11500m³/min |
75RPM |
115kg |
0.8Kw |
3.6Amps/220V |
<40.0dB（A） |
Do u need a hvls fan for your place? Contact Kale fans to get perfect cooling and ventilation solution.
Post time: Dec-15-2022