There are three common types of household and industrial humidifiers, namely ultrasonic humidifiers, electric heating humidifiers, wet film evaporation humidifiers, and pure humidifiers.
Ultrasonic humidifiers have been on the market for many years, using the principle of ultrasonic high-frequency oscillation to atomize water into 1-5 μ M's ultrafine particles diffuse water mist into the air through a pneumatic device, achieving the goal of uniformly humidifying the air. Ultrasonic humidifiers have high humidification intensity, uniform humidification, high humidification efficiency, and the advantages of power saving and long service life, which have always been popular. However, the disadvantage of ultrasonic humidifiers is also obvious, which is that they have certain requirements for water quality. The new generation of ultrasonic humidifiers adopts humidity control, which automatically adjusts the humidification amount with changes in humidity. The dynamic balance principle is used to control the environmental relative humidity between the most suitable 45% to 65% RH for the human body. When the indoor relative humidity exceeds the set upper limit H, the humidifier automatically stops humidification, keeping the environment in a constant humidity state, and can also cool and humidify the workshop. This type of humidifier can be used not only for daily air humidification, but also for beauty shower surfaces.
Electric heating humidifier is the simplest humidification method in technology, which uses a heating element to heat water to its boiling point and release water vapor into the air. There are no requirements for water quality, but the disadvantages are high energy consumption, inability to dry burn, low safety factor, and easy scaling on the heater.
A pure humidifier is a new technology that has just been adopted in the field of humidification. It uses molecular sieve evaporation technology to remove calcium and magnesium ions from water, completely solving the problem of "white powder" caused by poor water quality. Wash the air through a water curtain, humidify the air while purifying it, and then send the moist and clean air indoors through a pneumatic device, thereby increasing environmental humidity. This type of humidifier can also filter air and kill bacteria, not only making the humidification more pure, but also washing the air with clean water, effectively removing pollution in the air, promoting indoor air circulation, ensuring human health to a greater extent, and reducing the probability of respiratory infections.
High pressure spray humidifier is a kind of isoenthalpy humidification method in which filters, pump units, water tanks and control boxes of humidifiers are installed in workshops or machine rooms, and spray systems (nozzles, pipes) are installed on the top of workshops. This humidification method involves pressurizing tap water through the humidifier host and passing it through ultra-fine filtration, followed by a specially designed nozzle for atomization and high-speed spraying, forming a 5-10 μ The water mist particles of m exchange heat and moisture with the flowing air, absorb heat from the air, vaporize and evaporate, increase the humidity of the air, achieve humidification treatment of the air, and also play a role in cooling and controlling dust.
The working principle of the wet film evaporation humidifier for central air conditioning is very simple. Water flows evenly from the top of the wet film through a hydrophobic device along the corrugated surface of the wet film, making the wet film uniformly wet from top to bottom. When dry hot air flows through the surface of the wet film, it exchanges heat with the moisture in the wet film, and the moisture evaporates into water vapor entering the air, increasing the humidity of the air, This turns dry hot air into clean and moist air.
Wet film material (also known as "Seidek") is the core of wet film humidifiers. It uses plant fibers as the substrate, and is sintered through special resin treatment to form a corrugated and overlapping polymer composite material. It has extremely strong water absorption, but its disadvantages are poor self-cleaning ability and susceptibility to mold growth.