Fans are general-purpose devices with high demand; what criteria do people consider when choosing fans?
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Centrifugal fans are widely used. However, during use, the following problems arise from time to time, causing hassle and financial losses. Everyone, please share: what are the aspects you pay the most attention to when selling fans? 1. The actual air volume; the pressure does not reach the designed values. 2. The fan vibrates heavily and produces a lot of noise. 3. Poor welding of the casing, resulting in air leaks. 4. An unsightly design. 5. Excessively high prices. 6. Inadequate after-sales service. 7. Large size of the fan and high motor power, leading to poor energy efficiency. 8. Difficulty in obtaining replacement parts for the fan. 9. Unprofessional sales staff. 10. Excessive standardization, with limited customization options
Agree with the person above; what they said makes sense
From a design perspective, in addition to specifying main parameters such as air volume and pressure drop, design, manufacturing, and acceptance standards are also discussed. I’ve seen that national standard; compared to the relevant API standards, it’s like Pan Changjiang facing Yao Ming. After establishing the main control standards, the design also takes into account the deviations and variations of various manufacturers from those standards. However, domestic design institutes seem to never care about this, which leads to many problems later on. Regarding all the problems listed by the original poster, I believe the root cause lies in whether the requirements were fully and clearly specified in the design. On this basis, the purchasing department focuses on price (based on the requirements provided by the design institute), while the quality department pays attention to the acceptance checks before shipment (based on the acceptance standards set by the design institute) and the quality of on-site installation (should there be issues such as excessive vibration during operation after successful pre-shipment inspection, it is usually due to poor installation quality). As for after-sales service and the professional competence of the manufacturer’s service staff, this is regulated through the company’s accreditation. As for the issues you mentioned: large size of the fans, high motor power, poor energy efficiency, as well as the difficulty in obtaining spare parts for these fans and the challenges associated with replacing them – all of these factors are in conflict with price.
Fans are general-purpose equipment, and competition in the market is fierce. When choosing one, several of the factors mentioned by the original poster should be taken into consideration. It’s not impossible to meet all of these requirements, but the cost will be relatively high
You get what you pay for! Moreover, the application of the entire fan is not solely the responsibility of the manufacturer; it also requires expertise from both users and designers.
Fan selection is primarily based on two factors: air volume and air pressure； When making the actual selection: for small fans, those produced by smaller manufacturers are generally sufficient; whereas for fans with high air volume, considering their actual performance, it is better to choose fans manufactured by larger companies. I hope this helps you.