working principle :
Large ceiling fan is a series of products special developed for energy saving,working environment improvement. As we all know,refrigeration is not the only way to achieve the effect of cooling and comfort. The area of a fan could blow is determined by the diameter dimension of it, but has nothing to do with its speed.therefore, the industrial fan with large diameter and low speed combines all these characteristics .
After years deeply research and exploration,by integrating oversea advanced aeronautic technology,we Dai sen developed a kind of propeller blades with outstanding performance,it conforms continuous and silent breeze by slowly rotation.The large volume of airflow generated by its unique and high efficient blades push down,thus a nearly perfect propeller exhaust is constructed.
It pushes large volume of airflow to the ground,and constructed certain high level airflow moving horizontally,thus generates a overall air circulation.The advantage is overall ground coverage and three-dimensional circulation of air.
The speed of wind generated by"Large industrial ceiling fan"is about 1-3m/s,completely calculated according to the best feeling of cooling when the airflow pass through human skin.too strong airflow makes people feel irritable,a sense of being blown directly,too high speed of airflow also makes people dizzy,only the through the evaporation of skin combines of breeze speed,can beautifies people's feeling of cooling.




"DAISEN"industrial ceiling fan technical standard
General
Model Number ----------------------------------------------------------DS-7.3
Operation mode ---------------------------------------------------------Forward Run
Diameter ------------------------------------------------------------------24 FT / 7.3 Meters
Blade Style ------------------------------------------------------------- Airfoil/OP
Number of Blades ------------------------------------------------------- 6
Nominal Horsepower ------------------------------------------------ 2.0 HP / 1.5 kW
Hanging Weight (average) -------------------------------------- 156Kg
Shipping Weight (Including control box, Mounting Hardware) (average) 186 Kg
Maximum dB-------------------------------------------------------------------60
(*dB Values Were Obtained by Testing. Specific Applications/Installation values may vary.


Performance (at max speed)
Displacement (fwd, blowing down) ---------- 16800 CMM( m3/min)
Maximum Speed----------------------------------------------------------- 50 RPM
Power Usage @ Max. Speed ----------------------- 1.5 kW
Efficiency @ 100% Max. Speed ------------------------------ 8.53CMM/Watt
Maximum Effective Area(varies according to different installation height, as well as below obstacles)----600-1400 m2
Typical Industrial Spacing --------------------------------------------12-40 Meter

Mounting Hardware
Standard Mount---------------------------------
Universal I-Beam Clamp w/ Swivel Joint and 250mm Drop
Glulam Mount (Optional) Brackets w/ Swivel Joint &200MM Drop

Additional Drop Extensions (Puyou)--------- Up to 2m in 20cm Increments
Motor
gear motor ------------------------------------------------------- CV40-30-1500
bearing structure ------------------------------------------------------- SKF heavy load bearing
design life ------------------------------------------------------- 12 years
HP ------------------------------------------------------- 2 / 1.5 kW
Ambient Operating Temperature------------- -20 C° to +40C°
Insulation Class -------------------------------------- H
Protect Class------------------------------------------IP 55
Work Contition------------------------------------------- continuous S 1
Service Factor---------------------------------------- 0.8/0.78
Gearbox
Type -------------------------------------------------------- 2-Stage Helical
Service Interval-------------------------------------------synthetic gear lubricating grease,maintenance free
Motor Control Panel (MCP)
Standard Power and Max Amp Draw-------------------- --220V AC 2Ø (16A) OR 380 AC 3Ø (20A)
power indication light-------------------------------------------------------fault/running(red/green)
RF Line Filter-------------------------------------RF
Air Breaker--------------------------------------- Schneider 220V1Ø 16A 380V3Ø16A
VFD Motor Drive Cable -----------------RVV1*
Frequency Converter-------------------------
poleless frequency controller,(1.5KW)|380V/220V
Safety Components
turnbuckle screw
mechanical anti-dropping structure
plastic coated steel cable
Blade Retainer Links (6), Safety Cable, Guy Wires (Ceiling mount only)
high strength screws and anti-skid nuts of 8.8,10.9, 12.9 grade for differnt structures.
Warranty
one year part warranty on Motor,blade, Gearbox & Control Panel.

★drive device

★Structure components

Comparison of three refrigeration methods in 1000 square meter plant

The energy consumption of large industrial ceiling fan is about 1 / 50 of that of central air conditioner and 1 / 10 of that of traditional industrial wall fan

***Suitable places of installation: Any high enough structure of factory,sport center,logistic place,car repair workshops,supermarket, airport,package workshop,animal breading industry,any kinds of hall,as well as fitness center etc.
***Height of installation: "Fengshen" series products for 6 meters to 20 meters height.
"Fengxing" series products for 3 meters to 6 meters height.
***Solutions for the three main kinds of installation structures as above shown pictures.

There are various forms of building structures. We provide you with the installation methods of three common structures (right figure):

Typical customer applications