Fan quality appraisal

fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machinery that is widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draft induction in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains; wind tunnel wind sources and inflation and propulsion of hovercrafts, etc.
fans include ventilators, blowers, wind turbines, etc. Their working principle is to use a high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction, so that the kinetic energy is converted into potential energy (pressure).
centrifugal fan is one of them. Based on the principle of converting kinetic energy into potential energy, it accelerates the gas through the rotation of the impeller, and then decelerates and changes the flow direction in the diffuser, thereby realizing the conversion of pressure energy.
In fan quality appraisal cases, Zhongke Testing can provide fan quality appraisal services.

1. The design and manufacturing quality of fan equipment is one of the important factors in evaluating its quality. In terms of design, the working conditions, air volume, pressure, efficiency and other parameters of the fan need to be considered to meet the needs of different working conditions. In terms of manufacturing, production needs to be carried out in strict accordance with the design requirements to ensure that the dimensions, materials, processes, etc. of the fans comply with the specifications.
2. Performance testing and verification of fan equipment is an important part of quality identification. Performance testing includes the measurement of static pressure, air volume, efficiency and other parameters of the fan, as well as comparative analysis with the design values. In terms of verification, it needs to be verified through actual operating conditions and test data to ensure the stability and reliability of the wind turbine under different working conditions.
3, the reliability and safety of fan equipment are key indicators to evaluate its quality. Reliability includes the life of the fan, failure rate, etc., and factors such as the material, manufacturing process, maintenance, etc. of the fan need to be considered. Safety includes the structural strength, protective measures, operational safety, etc. of the wind turbine, which must comply with relevant safety regulations and standards.

GB/T 43080.3-2023 Ventilator Fan efficiency class Part 3: Ventilator without drive at maximum speed
GB/T 19843-2022 Industrial ventilator Jet fan performance test
GB/T 19074-2003 Industrial ventilator Mechanical safety device for ventilator Guard
GB/T 2888-2008 Fan and Roots blower noise measurement method
GB/T 17847-1999 Boat Electric fan
GB/T 34877.3-2017 Industrial fan Determination of fan sound power level under standard laboratory conditions Part 3: Envelope surface method
GB/T 17774-1999 Industrial ventilator size
GB 26410-2011 Explosion-proof ventilator
GB/T 19232-2019 Fan coil unit
GB 10080-2001 Safety requirements for ventilators for air conditioning
0GB/T 11865-2008 Marine centrifugal ventilators
1GB/T 11864-2008 Marine axial flow ventilators
2GB/T 10178-2006 Industrial ventilators On-site performance test
3GB/T 2658-2015 General technical conditions for small AC fans
4GB/T 11800-2008 Marine explosion-proof axial flow fan
5GB/T 11799-2008 Marine explosion-proof centrifugal fan
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A dispute arose with the equipment manufacturer due to the fact that the fans purchased for a fire safety project were not safety and explosion-proof types.
was entrusted by the court to conduct an appraisal and analysis on whether the wind turbine involved in the case is a safe and explosion-proof type.
appraisal analysis results: The
appraisal analysis expert group discussed and conducted comprehensive quality and technical analysis on the relevant information and on-site investigation of the fans involved in the case, and made the following suggestions and conclusions: The
involved fan equipment system cannot be recognized as an explosion-proof fan equipment system.