For the water of ordinary household water dispensers, if it is qualified bottled water, it has been treated by disinfection and sterilization. Generally speaking, direct drinking will not have any safety problems. But the premise is that the water dispenser is clean and hygienic.
Cause of pollution
1. The water dispenser works by the principle of air pressure. Due to the design of the circulation system based on the air pressure principle, the water dispenser uses different chemical substances such as rubber hoses and plastic tubes, and the air quality is getting worse. The air acid-base coefficient increases, and the oxidation and corrosion of the tubular material is serious, resulting in the deuteration of the rubber tube and the plastic tube, resulting in white flakes and secondary pollution of the barrel water.
2. The water in the bottled water flows into the two water bladders through the water dispenser hose. One is a hot water bladder and the other is a cold water bladder. In addition to partitioning the hot and cold water, the two water bladders also act as sedimentation water. The role of impurities, the problem lies in the water machine seat and the three parts of the cold and hot water. People usually only change a bucket of water after drinking the bottled water, but they neglect that in the process of changing the water, the water dispenser liner will always have nearly 1000 ml of water, a bucket of water to drink. The longer the time, the more amazing the number of bacteria in the air. Discontinued the water dispenser under a period of time or high temperature and high humidity conditions, resulting in greater secondary pollution.
3, due to the bottled water (especially mineral water), the mineral content in the water, after a long heating, it is easy to produce scale, attached to the water storage tank or hot bile, will accumulate a long time to form a layer of yellow matter , secondary pollution of bottled water.
After reading this, do we have to "respect the water dispenser"? In fact, as long as it is regularly cleaned and disinfected, these problems can be solved!
How to clean the water dispenser?
1. Unplug the power plug, remove the water bucket, and open the drain pipe (usually a white plastic material knob) behind the water dispenser to drain the remaining water. Then, turn on the hot and cold water switch to release the water.
2. Remove the "smart seat" (that is, the part of the water dispenser that touches the mineral water bucket), and carefully scrub the inside and outside of the water tank liner and lid with alcohol cotton to prepare for the next disinfection.
3, you can use white vinegar, beer, lemon or professional cleaning agent (optional one), pour into the water dispenser, so that the disinfection water fills the entire cavity, leaving 10 to 15 minutes.
4. Turn on all the switches of the water dispenser, including the drain pipe and the water switch, and drain the disinfectant.
5. Rinse the entire cavity of the water dispenser continuously with clean water (this process is recommended to move the water dispenser to the bathroom to ensure sufficient water), and open all the switches to clean the flushing liquid.
6. Put a glass of water and smell the chlorine. If you have it, let it go and let it go until you can smell it.
Is the household water purifier good or the water dispenser good?
The water dispenser is a device that warms or cools the barrel of purified water and is convenient for people to drink. These two things are not a concept range, just like asking whether the pot is good or the bowl is good. The water purifier is the effect of purifying the water, aiming at the quality of the water; the water dispenser is a tool for drinking water, and the purpose is to say The way of drinking. After the household is equipped with a water purifier, it is used by the water dispenser. Therefore, the water purifier and the water dispenser are not in conflict with each other!
Two - way trigger diode, also known as two - end ac device (DIAC), and two - way thyristor at the same time.Because of its simple structure and low price, it is often used to trigger the bidirectional thyristor, and can also constitute overvoltage protection circuits.Construction, symbol and equivalent circuit of a bidirectional trigger diode.
Also commonly used in the overvoltage protection, timing, shift equal circuit, Figure 2 is the overvoltage protection circuit composed of bidirectional trigger diode and bidirectional thyristor.When the transient voltage exceeds the DIAC and Ubo, the DIAC quickly conducts and triggers the bidirectional thyristor to also conduct, so that the following load is protected from overvoltage damage.
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