FFU air purifier is an effective step for buying tips

1, the fan, the fan is ffu air purifier core components, look at the fan brand is not produced by large manufacturers, and then look at the fan material is not good, durable. FFU used in the motor with DC motor and AC motor, they have their own strengths. DC motor small size, high investment, control the corresponding technology, noise, low energy consumption. AC motor bulky, low cost, easy to control, noise, high energy consumption. As the domestic DC motor drive control technology immature led to the current domestic DC fan is not a lot of mature brands, some well-known domestic manufacturers are also very difficult to DC motor to do energy and noise control. There are many manufacturers under the banner of imports of DC FFU motor number, the current domestic use of a few foreign brands of motor (Germany EBM, EODB, Japan Kusatsu ...), as the industry I can tell you that the import current motor Of the cost of about 2000 and the cycle to import more than 40 days, if you buy the spot imported DC motor FFU purifier, but also imports HV filter paper, the price is still below 3000, this can be 100% sure is fake. Example: the choice of the German EBM motor, can be seen below, for the authentic EBM, if the motor is not the end of the ebmpaost casting is fake, many small manufacturers and Taobao EBM motor brand lift the price of purification machine, according to a number of manufacturers to understand FFU air purifier with the German EBM is not necessary, it is mainly in the advantages of long life is the shortcomings of high noise, in the industrial 65 dB standard, but if the home of this noise is a bit high, so I think it can be used ABS plastic impeller, This can also be video inspection.

2, efficient filter, which also depends on the manufacturers, the current domestic call is better than the United States is the HV HV, but according to my business director with the HV manufacturers to communicate, did not increase the phenomenon of a lot of filter paper orders, and it tells us a feature HV is the carton with HV LOGO, so we suggest that if the manufacturers told you with the HV, you can call the video to see the scene there is no large volume of HV filter paper box.

3, impeller, impeller material ABS plastic, metal, as well as steel, which is the most ideal for the noise of the plastic impeller, because he is the smallest of all materials in the noise.

4, the box, usually the current ffu fan filter unit is mainly used in cold plate paint, stainless steel, aluminum and aluminum plate, and a small number of steel spray. General aluminum-zinc plate processing the fastest price is also more moderate.

5, see the wind speed size, whether uniform, and some ffu the size of the wind uncertain, uneven. You can test a few ffu air purifier for comparison, the other general FFU manufacturers will have their own patent ducts, which can also see whether a plant in the development of this ability, not just buy a sample according to gourd painting scoop, If the production of FFU manufacturers even the wind tunnel patents are not, no doubt certainly do not FFU purifier.

6, to see if there is noise, open the ffu air purifier to make it open running state, the test, listen to the size of the noise, whether the sound is sharp or not, the noise is not high and low. General manufacturers will have their own laboratory and supporting the test tools, manufacturers can give you the frequency of detection to see.