Dryer Air Volume Test Equipment – IEC 61855 Automatic Airflow Performance Measurement

Dryer Air Volume Test Equipment – IEC 61855 Automatic Airflow Performance Measurement

The Dryer Air Volume Test Equipment is a high-precision, automated system engineered by KingPo to quantitatively evaluate the airflow performance of hair dryers and similar hair care appliances in full compliance with IEC 61855 Figure 9 and QB/T 1876 Section 5.7.1 Figure 6. An imported hot-wire anemometer mounted on a servo-driven precision sliding arm scans a 200×200 mm measurement grid in 5 mm increments, collecting wind speed data at each point. Only points with wind speed ≥24 m/min contribute to the total air volume calculation (Q_total = Σ (0.00025 × v_i)), delivering accurate, repeatable results with minimal operator intervention.

The system employs PLC intelligent control and a touch-screen computer interface for fully automated testing, data acquisition, real-time monitoring, air volume computation, and report generation (printable). Remote start functionality prevents operator interference with the airflow field. It is widely applied in R&D validation, type approval, and production quality inspection for household hair dryers and similar products.

Professional Construction & Technical Precision

• High Precision Wind Speed Measurement:The equipment uses imported hot-wire anemometers to measure airflow velocity with high sensitivity and excellent repeatability.
• Automatic Airflow Scanning System:A servo motor driven scanning mechanism moves the anemometer across multiple measurement points to accurately capture airflow distribution.
• PLC Intelligent Control System:The test system adopts PLC control combined with computer operation, allowing automated test execution, data acquisition, and analysis.
• Accurate Air Volume Calculation:By measuring wind speed at multiple points across the airflow area, the system calculates the total airflow volume of the hair dryer according to IEC testing methods.
• Remote Operation Function:The testing equipment can be placed inside the testing room while operators control the system remotely to avoid disturbance to the airflow field.
• Automatic Data Recording and Reporting:The testing software automatically records airflow data and generates standardized airflow test reports that can be printed or exported.

Working Principle

• The Hair Dryer Airflow Test System uses PLC control to drive the anemometer scanning mechanism through a servo motor.
• During testing, the hot-wire anemometer moves across the airflow area at fixed intervals and measures wind speed at each point. The system records airflow data and calculates the airflow volume based on wind speed measurements.
• The total airflow volume is calculated by summing the airflow values of all measurement points that meet the standard wind speed requirements.

Total airflow calculation formula:

Where:

• Qtotal = Total air volume

• V = Wind speed at each measurement point

• N = Number of valid measurement points

This testing method ensures accurate evaluation of the airflow performance of hair dryers.

Equipment Structure

The Dryer Air Volume Test Equipment consists of several core components designed for accurate airflow measurement.

• Control System:The equipment adopts a PLC intelligent control system with computer operation software, enabling automated testing, real-time monitoring, and report generation.
• Specimen Mounting Fixture:The adjustable specimen mounting fixture ensures that the hair dryer outlet is aligned with the airflow measurement plane and maintains a standard distance of 200 mm between the outlet and the anemometer.
• Automatic Moving Mechanism:A servo motor driven precision sliding mechanism moves the anemometer along multiple axes to scan the airflow area.
• Wind Speed Measurement Unit:The system uses a high precision hot-wire anemometer to measure airflow velocity with reliable accuracy.
• Specimen Power Supply Unit:A universal power socket is integrated into the system to provide rated power supply to the hair dryer during testing.

Test Procedure

The airflow performance test is conducted according to the following procedure:

1. Disable the heating function of the hair dryer.

2. Install the hair dryer on the mounting fixture.

3. Adjust the distance between the air outlet and the anemometer to 200 mm.

4. Start the automatic airflow scanning process.

5. Measure wind speed at multiple points across the airflow field.

6. Calculate airflow at each measurement point.

7. Generate the total air volume test report automatically.

This automated procedure ensures accurate, repeatable, and efficient airflow measurement.