UTEK axial fan Design Validation Standard Test Results
  2023/08/23| View:547

UTEK axial fan Design Validation Standard Test Results


图片1.jpg


图片2.jpg


图片3.jpg


图片4.jpg

图片5.jpg



How to Prove Same Lay-out and Performance

 

* DV : Design Validation

 

* Comparison DV TEST has to be conducted between each WIingF sample given by customer and each Dele replacement fan.

 

* Visiting UTEK to review DV test result and Quality control System.


Comparison DV TEST ITEMs


* DV : Design Validation

 

 1. Dimensional each Wingfan and UTEK fan for the lay-out & raw material.

图片6.jpg                





*Measure: Fan dia /PW/BF etc, and make comparison sheet

 

 

 

*Compare Blade raw material and use same raw material fan with wingf as test fan.

 






Comparison DV TEST ITEMs

 

 

2. Comparison Air Flow Test


图片7.jpg                




*Test Method (procedure): to test at same test condition for each fan to see UTEK fan has same performance with Wingf sample.

 

 

 

 

*Acceptance Criteria: +/- 3~4% in Air flow

-Measure power and Noise

 





Comparison DV TEST ITEMs

 

 

3. Thermal Cycle (Do conduct test with UTEK fan and Wingf sample together)


图片8.jpg                




*Method:

-Hgih Tepm :120˚C ± 2˚C at cold and hot chamber for 2h

 



-Low Temp : - 40˚C ± 2˚C at cold and hot chamber for 2h

-8h is one cycle and 30 cycles has to be tested



Test results:  

No visual cracks and loosening of the metal disk. No color changed.

Do air flow test with tested fan again to see if the air flow is +/-5% between tested fan and not tested fan.

 



Comparison DV TEST ITEMs

 


4. Spin burst test

图片9.jpg

- Method- * To speed up rpm of each Dele and Wingf until fan will be broken in 500rpm increments for 20 or 30sec to see each fan damaged or broken RPM. * If there is no safety issue, rotate fan up to 7000~7500RPM ( Fan dia : < 600 mm) , up tp 6000 RPM ( >600mm)




Comparison DV TEST ITEMs

 

5.Cold impact

图片13.png



- Method- * Place each fan in the cold chamber at - 40˚C for 4 hrs Drop a 0.54kg steel ball from a height of 1.22M on each blade.

* Acceptance Criteria : - No visual cracks and loosening of the metal disk. 




Comparison DV TEST ITEMs


6.Resonance Test


图片14.jpg                




- Method Sweep Frequency : 10-500Hz, 1G Accelometer(Response / sensor ) Position : Fan edge, hub, disk.





图片15.jpg                



Acceptance Criteria: 

To submit 1st / 2nd / 3rd Mode Frequency

No 1st Mode less 100Hz or Wingf and UTEK

same or similar resonance point.





Comparison DV TEST ITEMs


7. High Speed Test


图片17.jpg                




Method: 

To rotate fan in the 100˚C hot chamber at 3000~4000rpm for 100 hours. ( can test 8 hours a day for 10 or 15 days)

 

Do not need to test with Wingf. UTEK has only to est with UTEK fan which has same air flow with Wingf.




Test result: No visual cracks and loosening of the metal disk