Expert Interpretation: Analysis of humidifier product performance standards - ultrasonic humidifier,

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Humidifier
Live and work gradually become an indispensable appliance. Humidifier to regulate the production, protection of legitimate rights and interests of consumers, the National Standardization Technical Committee of household appliances by mid-2007 began to develop "humidifier" national standard (the standard), the current development has been completed, reported to the National Standardization Management Committee approval is expected in early 2009 can be introduced.
 Terms and definitions
 Currently on the market a wide range of humidifiers, the most common are ultrasonic humidifier, direct evaporative humidifier, heating-type humidifier and centrifugal humidifier. As these products with different structures and humidification principle, the limited value of the pilot project is also different, so the standard types of humidifiers and the first rigorous definition of the relevant terminology.
 (1) humidification
 Humidifier humidification is the most important parameters, some enterprises to cater to consumers seeking a large amount of psychological humidification, humidification free standard large volume, so the standard should be strict rules humidification products rated lower than the nominal value of humidification .
 As direct evaporative humidifier humidification the relative humidity and the environment a great relationship, so the amount of test methods for wetting clearly states: "For the direct evaporative humidifier (including the compound with a direct evaporative type humidifier devices), test environment relative humidity should be maintained at (30 Â± 5)% ", it will be more scientific and accurate determination of the humidification humidifier; while for other types of humidifiers, humidification amount of relative humidity on the measurement of almost no effect, so the relative humidity of 30% to 70% range can be.
 (2) Humidification efficiency
 Humidification humidification efficiency is the amount of the actual humidifier and the ratio of input power, reflected power can produce the number of humidification unit volume, is a measure of performance humidifier, an important indicator of good or bad.
 Today's world, increasing shortage of energy, the standard in the development process taking into account the energy conservation requirements. In order to guide consumers to purchase energy-saving environmentally friendly products, promote enterprises to create a more efficient products, increase the standard of humidifying efficiency of this project, and the index is divided into A, B, C, D four grades, the specific table 1.
 (3) noise
 Taking into account the humidifier in the bedroom may be used, if the noise would be too great a certain impact on consumers, so the standard indicators of the strict noise restrictions.
 Noise test using GB/T4214.1-2000 "Household and similar electrical appliances acoustic noise test methods Part 1: General requirements" of the testing methods. For the average humidifier, the direction of size not greater than 0.7m, with 10 measuring points with a hemispherical measurement surface; for the large size of the humidifier, if one direction is bigger than 0.7m, were used with a 9 a rectangle measuring points for measuring surface. The end result should be converted to sound power level.
 (4) evaporator core (device) life
 For direct evaporative humidifier, evaporator core (device) is the greatest impact on performance parts. With the growing use of humidifier, evaporator core (device) will continue to lower efficiency, humidification also goes down. According to actual situation, representatives of participation in consensus standards, when the humidifier humidification humidification was reduced to the initial amount of 50%, as evaporation core failure. Evaporation can be replaced for the core (devices), its life should not be less than 1000 hours (about the use of a wet season, time).
 Accessibility
 Now markets many of the humidifier products come with soft water, humidity, display and other auxiliary functions, in order to prevent some of the products clearly do not have this feature or this feature can not play the corresponding effect, through false propaganda means to mislead consumers, the standard auxiliary function of these specific requirements.

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