US Standard Ceiling Fan Airflow Laboratory 10 CFR Part 430

Technical conditions:

1、Environmental temperature control:21.1±5℃, humidity50%.Therefore, it is recommended to install the test shielding room in a room with central air conditioning or install independent air conditioning, and control the temperature outside the shielding roombelow21.1℃This can ensure that the testing requirements are met. This plan does not include the temperature control part of the experimental environment.

2Installation device for ceiling fanCoaxial with the center of the ground rotation axis in the middle of the roof.

3Anemometer:12The wind speed probe is installed on a rotating arm that can rotate around the axis according to the standard installation position.

Device requirements:

1The device should comply withDOE 10 CFR Appendix U to subpart B of part 430 -2018The standard requirements for air volume testing include reasonable design, high degree of automation, convenient use, durability, load-bearing and anti vibration capabilities;

2Test scope: Ceiling fan(Customers only test ceiling fans)

It can automatically generate detection results and process curves, and print them out.

3Wind pressure anemometer, total12One. (Brand to be determined)The test results meet the requirements430standard）

4The system should be equipped with a multifunctional electricity meter that can measure voltage, current (true RMS), and power500VAVariable frequency (±)1%）Voltage regulating power supply, please refer to the configuration table for specific configuration;

Multi head ceiling fan test setup

Hang the multi head ceiling fan on the ceiling so that one of the fan heads is located directly above sensor 1 (i.e. at the intersection of axes A, B, C, and D). The distance between the lowest point that the central ceiling fan blades can reach and the wind speed sensor should be the same as that of all other small diameter ceiling fans (see Figure 3 in this appendix). If the multi head ceiling fan has a switchable swing function (i.e., the fan blades change their rotation axis relative to the ceiling), please turn it off before measuring the wind speed. If any multi head ceiling fan is not pre installed with blades, only install the blades on the fan blades located directly above the intersection of the sensor axis. (Even though the blades of a multi head ceiling fan usually swing when all blades are installed, if the central ceiling fan is the only blade installed without swinging, the ceiling fan still needs to undergo this test procedure.) If all blades are pre installed, please measure the wind speed according to section 3.3 of this appendix, but only open the central ceiling fan. Measure power consumption separately with fan blades installed on all fan heads and any oscillation function turned on (if any). 3.2.4. The test setting for ceiling fans with non direct downward airflow. Before testing, please adjust the ceiling fan head to make the airflow as vertical as possible. For ceiling fans that cannot achieve a completely vertical airflow direction, adjust the direction of the ceiling fan (or fan head, if the ceiling fan is a multi head fan) so that any remaining tilt aligns with one of the four sensor axes. It's not just about measuring the wind speed of the sensor directly below the ceiling fan, but also measuring the wind speed of all sensors along that axis, as well as the wind speed of the axis at a 180 degree angle relative to that axis. For example, if the tilt direction is along the A-axis, the wind speed of all sensors along the A-C axis needs to be measured.