Main technical performance indicators:

1. use Tu: Mainly used for testing the air volume of electric fans.

2. Design basisGB12021.9-2008 Energy Efficiency Limits and Grades for AC Fans

GB/T 13380-2018 AC fans and speed controllers;

IEC 60879《Performance and construction of electric circulating fans and regulators

3. How to translateTesting principle:GB/T 13380-2018

AC Fans and GovernorsIEC 60879《

4. Performance and construction of electric circulating fans and regulators》Related requirements;

5. Test model and specifications:

Model: ceiling fan;Test items and measurement system accuracyTemperature range: 0-500.5℃

Accuracy: better than ±℃ Humidity range:0-95%RH

Accuracy: better than ±3%RH Wind speed range:0-20m/sAccuracy: better than ±(0.1m/s+1.5%measured value) Current range:0-5A

Accuracy: better than ±0.5% Voltage range:0-300VAccuracy: better than ±0.5% Power range:0-1000WAccuracy: superior to

±0.5%Atmospheric pressure (Finnish Vaisala)800 ）：hP1100 a～hP0.1a, better than ±

6%.The installation device of the ceiling fan can be adjusted up and down to maintain the distance between the test sample and the bottom of the test inner screen, and the distance between the plane of the ceiling fan blades and the anemometer blades

7800mm-1600mm4Adjustable.、On the four and a half diagonals of the anemometer inside the test screen, and from the center of the distance diagonal40mmStart measuring externally, and then proceed to the next step80mm

Measure the increment at the second point until the calculated average wind speed drops below

9m/min.

AC fan and speed controller

6.7.2 Wind volume test of ceiling fan

The experiment was conducted in the air volume test room shown in Figures 5 and 6, and the dimensions of the test screen and external screen in the laboratory are as follows:

Test screen length: 4500 mm.

Width: 4500 mm.

Height: 3000 mm.

The above dimensions allow for an error of ± 15mm.

The top of the test screen, except for a circular hole (top hole) in the center, should be covered by the top screen, and the diameter of the top hole should be larger than the diameter of the fan blade

10%~20%, the thickness of the partition of the central top screen with a top hole should not exceed 6mm.

The bottom of the test screen should be 450mm away from the ground to provide an appropriate air outlet.

The top plate outside the test screen or any protruding beam that may interfere with the airflow should be located no less than 1000mm above the top hole, i.e. the outer screen