Recently, the Shanghai Quality and Technology Supervision Bureau of the production and sales of fan products, supervision and inspection carried out, a total sample of 32 kinds of electric fans, ceiling fans which 4 batches of them, floor, wall a lot, switch to page 23 of the batch-type mesa fan Other types of fan 4 batches, the product of signs and instructions, protection against access to live parts, input power, and so the 19 indicators mandatory safety inspection, these items are mandatory security requirements, either directly or indirectly and consumer safety and property security is closely related to the national mandatory standards for these projects have specific requirements. The inspection results to determine compliance in 26 batches, sample pass rate of 81.3%.
Although the fan has been an important product in the home appliance market position, but with the current pace of development compared to high-end home appliances, air-conditioning products in the context of large-scale advance, the former red-hot electric fan industry has shrunk. However, survey data have found that easy to use, flexible, energy efficient products is still a huge fan demand for space.
Currently on the market ceiling fan, table fan, stand fan, box fans, wall fans, and derived products breeze ceiling fan, air conditioner fans, and other different varieties. Each fan has different specifications, consumers should use to determine the use of the environment and what kind of fan to buy. Usually selected mainly concentrated in the desktop, floor-type categories. Standards of these two types of fans are generally divided into two kinds of universal and electronic luxury. The first is a simple structure, easy operation, low price of its characteristics, generally with a change in wind speed and the two functions; function of the latter complex, luxury features exquisite styling. Consumers may be based on the premise of practicality or utility, decoration, luxury trade-offs both for the purpose of the decision. Purchase should note the following:
1, check the products out of the box must be accompanied by certificate, manual, fan nameplate production should make, Model specifications, rated power, rated voltage, power type and frequency indicators. Fans of the outer and inner packaging for damage. Quality requirements for modeling the appearance of lines, nice colors. Plating requires a smooth, shiny, no yellow, no rust, peeling and waterlines phenomenon. Film requires hard, smooth, no bubbles, scratches, no paint loss, show the bottom of hanging paint mixed paint or different phenomena. Decorative pieces without damage; fit tightly around the nets, no distortion and a hood for loose solder wire sealing off and so on. Floor fan movements flexible. Fans with special features, and its function should be effective.
2, check the fan shook his head, speed and time switches are labeled in line with the panel. Switching device has touch-keys-and other, requiring the security, flexibility, good, on and off the power when the contact. If the keyboard switch, when you press a key, there should not be linked to the phenomenon of two keys, each key is pressed, the reset must be flexible and comfortable. Requires regular and accurate timing devices, flexible rotation, there is no jamming or friction panel phenomena phenomenon, normally open and normally closed position should be controlled and reliable. Knob, switch operation, crisp sound, accurate positioning. Accurate and reliable touch switch command. Stall speed, but require the obvious difference between the slow stall speed should be less than 70% faster file. Sliding along the axial fan, its small sway. Before and after watching the gap between the motor, as long as the fan rotor rotation flexibility, the smaller the gap the better. Remove the check before the fan guards, fan hand holding the middle of the prominent part of the push and pull several times. Fan check: hand slowly rotating blades, stationary blades turn easily, do not touch any part of the leaf gradually diffuse nature stop stop. View from the side fan running track, and if no significant deviation, then the fan rotation speed is relatively stable. Stability is the key to the fan, the most unfavorable position of the fan into a 10 ° angle with the plane when the fan should not be overturned.
3, make a trial run when they buy electric fans, power, metal parts with Shi Dianbi check, should be no leakage phenomenon. Shaking his head shook his head when the device requires continuity of stable, low noise, not stop gap should not be a stagnation or a sudden shaking, jumping, gurgling sound of the phenomenon, shaking his head angle should be greater than 80-90 degrees. When asked in a low gear to start, no hum, rustle, no vibration when running fast file sound, whistling, rattle. In the swing start with the most low-grade, fan speed to normal quickly, especially in the 0.85 times rated voltage can be normal when you start; when the change gear, the air flow significantly change the fan speed Dangxia in operation, and to shaking his head device work, noise should be no exception. Work for 30 minutes, the motor no obvious hot feeling (temperature, the lower the motor the better the quality.) If remote control, clock, timer and other functions should be accurate. Check the timer, the timer knob to the time stamp of any position, the fan should operate normally until the stop position when the automatic stop.
4, the purchase should look for products on the 3C certification mark. After a safety certification of products, there is a certain guarantee of its quality. Choice of quality brand-name products, in effect laid the foundation for quality assurance. This is because high-quality brand-name products, production volume, product updates, fast, reasonable structure design, processing, sophisticated technology, strict quality control, good after-sales service.
