Aerodynamic Performance and Air Volume Test Device for Ventilation Fans

Aerodynamic Performance and Ventilation Fan Air Volume Test Device

Aerodynamic Performance and Ventilation Fan Air Volume Test Device

Test Standards Met:

AC Ventilation Fans for Household and Similar Use and Their Speed Regulators GB/T14806-2017

Performance Testing of Standardized Air Ducts for Industrial Fans, GB/T1236-2017

Household Range Hoods - Performance Testing Methods EC 61591:1997+A1:2005, EN61591:1997+A1:2006+A2:2011.

This device complies with the requirements of IEC61591-2005 and GB/T 1236-2000. It is suitable for measuring the air volume and aerodynamic performance of range hoods (A: range hoods with internal blowers, B: recirculating range hoods with internal blowers, C: range hoods with external blowers for indoor use, D: range hoods with blowers for external use). It can test range hoods and ventilation fans with a maximum air volume of 26 m³/min and a maximum static pressure of 900 Pa. It can measure performance indicators such as the air flow rate and static pressure difference of the tested appliance, and allows for the selection of test environment temperature and atmospheric pressure.

I. System Overview

This test system utilizes an intelligent industrial control integrated system for control, featuring a large-size computer display and operation. It automatically measures, records, and prints test reports, and can analyze test results and data to meet the needs of product development and production.

This test system can plot corresponding curves for static pressure vs. air volume, air volume vs. speed, current, power, efficiency, etc. According to the method in Appendix A, when the appliance operates at rated voltage and rated frequency at the highest speed setting, its declared values shall comply with the specifications in Table 1:

Table 1 Air Performance Limit Values

Indicator Name

Limit Value

Maximum Total Pressure Efficiency %

≥19

Working Air Volume m³/min

≥7

II. Test Principle and Layout

This solution adopts a blowing test mode. The nozzle combination is automatically opened based on the set air volume, and the frequency of the auxiliary fan is infinitely adjusted via a frequency converter to control the air volume. The middle of the air chamber consists of a flow-straightening orifice plate, nozzles, an actuation mechanism, and a nozzle plate. The air chamber interface size is 600mm × 600mm. This system automatically calculates the fan air volume by measuring the pressure difference before and after the nozzle. During operation, the range hood performance test device is activated. The air volume of the auxiliary fan is controlled by adjusting the opening and closing combination of the air chamber nozzles and the current frequency of the frequency conversion device. The static pressure corresponding to the air volume is measured using a high-precision micro-manometer, thereby obtaining the corresponding data of the tested fan's air volume and static pressure, and plotting the air volume vs. static pressure curve.

Electric Fan Air Volume Test and Detection Equipment

Electric Fan Air Volume Test Chamber

Desk Fan/Floor Fan Air Volume Test Chamber

Ceiling Fan Air Volume Test Chamber

Bladeless Fan Air Volume Test Chamber

Tower Fan Air Volume Test Chamber

Electric Fan Air Volume Test Device

Electric Fan Air Volume Performance Test Device

Electric Fan Energy Efficiency Test Device

Electric Fan Energy Efficiency Test Chamber

Electric Fan Oscillation Life Test Device

Electric Fan Oscillation Life Tester

Electric Fan Cycle Life Tester

Electric Fan Bending Oscillation Tester

Multi-station Electric Fan Key Switch Life Tester

Electric Fan Switch Button Life Tester

Electric Fan Oscillation Head Life Tester

Hair Dryer Aging Life Tester

Hair Dryer Aging Life Tester

Wind Speed/Rotation Speed Tester

Damp Heat Resistance Test for Mechanical Timers Used in Electric Fans

Test Methods

There are various test methods for mechanical timers used in electric fans, mainly including the following:

Constant Temperature and Humidity Chamber Test: Simulates damp heat environments to test timer performance.

Salt Spray Test: Evaluates the timer's resistance in corrosive environments.

High and Low Temperature Impact Test: Tests timer performance under extreme temperature changes.

Insulation Resistance Tester: Used to detect the insulation resistance of the timer.

Withstand Voltage Tester: Evaluates the timer's voltage withstand capability under high damp heat conditions.

Mechanical Life Tester: Used to test the mechanical life of the timer.

Electrical Performance Tester: Detects the stability of the timer's electrical performance.

Aging Test Chamber: Used to evaluate the aging of timer materials.

Vibration Tester: Tests the timer's vibration resistance under damp heat conditions.

Impact Tester: Evaluates the timer's impact resistance.

Spectrum Analyzer: Used to detect changes in material composition.

Thermal Cycle Test Equipment: Detects performance changes of the timer under repeated thermal cycling conditions.

Environmental Adaptability Tester: Evaluates the timer's adaptability in different damp heat environments.

Current and Voltage Tester: Used to test the electrical performance of the timer.

Corrosion Resistance Test Equipment: Evaluates the timer's tolerance to corrosive environments.

Contact Resistance Tester: Detects the contact resistance of the timer.

Material Analyzer: Used to analyze the chemical composition of timer materials.

Environmental Simulation Test Chamber: Simulates timer performance under different environmental conditions.

Thermal Imager: Used to detect temperature changes of the timer under damp heat conditions.

Damp Heat Cycle Test Equipment: Evaluates the performance stability of the timer under damp heat cycle conditions.

Test Instruments

Testing mechanical timers for electric fans requires the use of various test instruments, including but not limited to the following:

High and Low Temperature Test Chamber: Used to simulate extreme temperature environments.

Constant Temperature and Humidity Test Chamber: Used to simulate damp heat environments.

Salt Spray Test Chamber: Used for corrosive environment testing.

Electrical Performance Tester: Used to test electrical performance.

Vibration Tester: Used for vibration performance testing.

Impact Tester: Used for impact performance testing.

Aging Test Chamber: Used for material aging testing.

Withstand Voltage Tester: Used for voltage withstand performance testing.

Insulation Resistance Tester: Used for insulation resistance detection.

Thermal Imager: Used for temperature change detection.

Contact Resistance Tester: Used for contact resistance detection.

Spectrum Analyzer: Used for material composition analysis.

Thermal Cycle Test Equipment: Used for thermal cycle performance testing.

Environmental Simulation Test Chamber: Used for testing under different environments.

Material Analyzer: Used for chemical analysis of materials.

Corrosion Resistance Test Equipment: Used for corrosion resistance testing.

Current and Voltage Tester: Used for electrical performance testing.

Environmental Adaptability Tester: Used for environmental adaptability assessment.

Damp Heat Cycle Test Equipment: Used for damp heat cycle performance testing.

Mechanical Life Tester: Used for mechanical life testing.