Is it good to boil water repeatedly in a water dispenser Is the hot water in a water dispenser repea

The water dispenser is not good to boil water repeatedly, mainly for the following reasons:

1. If the water in the water heater is repeatedly heated for more than ten hours or several days (some people call it "thousand boiling water") and is not replaced, this water may contain high health hazards, such as harmful substances dissolved in heating elements and containers, and some trace harmful substances contained in raw water will also accumulate and increase.

2. After the water is boiled many times, the dissolved oxygen in the water runs out, and drinking oxygen-deficient water is not good for health.

3. Due to boiling for too long, the scale will dissolve into the water, and the concentration of heavy metals such as calcium and magnesium in the water will increase, making the water hard, which is not good for health. After boiling, insoluble substances such as calcium carbonate, magnesium carbonate, magnesium hydroxide and other insoluble substances in hard water are pre-settled to form scale.

Boiling water should not be boiled repeatedly, as nitrites and carcinogens will be produced, so do not boil water repeatedly for the sake of your health. But it is fine to boil the water at a fixed temperature without letting it boil.

Repeat the boiling of water, that is, the water is boiled once, and the water is boiled again after it has cooled. It's better not to use such water.

The reason for this is that there is very little dissolved oxygen in the water that has been boiled repeatedly. Such water has no nutrients.

The solubility of oxygen in water is inherently small, and some of the oxygen is lost when it is boiled. If such water is boiled again, the oxygen dissolved in the water is again reduced. It seems that there is more dissolved oxygen in raw water, but there are microorganisms in it, and it is easy to get sick after drinking it.

Therefore, it has to be sterilized and drunk by boiling.

Health News] Do not drink boiled water that has been boiled repeatedly.

In fact, most people probably have the same experience, when you are cooking noodles or soup, when you are almost ready, only to find that the soup is too little, or the soup is too salty, you will pour hot water into it to achieve enough water or dilute the saltiness of the soup.

Secondly, when brewing milk or instant noodles, take the warm water directly from the thermos and boil it before brewing. This approach seems to be economically viable, saving time spent on cooking, as well as saving gas and water.

However, according to experimental proofs, if the water is boiled repeatedly, the nitrate in the water will be converted into nitrite, and nitrite will make the hemoglobin in the human body turn into nitrite hemoglobin, which will make the red blood cells lose the function of carrying oxygen.

Therefore, if you drink water that is boiled repeatedly, it may cause tissue hypoxia, shortness of breath, chest dullness, purple lips and nails, or easy sleepiness. If it is more severe, nitrite enters the body and is likely to be converted into carcinogens nitrosamines after the action of stomach acid.

In view of this, it is important to remember that when you drink this repetitive boiling water, it will have a negative impact on your health. For the sake of your health, don't be too gas-saving or too lazy.

Not goodDrinking boiled water repeatedly is harmful to the human body. The life of the water dispenser becomes shorter.

It is best not to use this kind of water dispenser, it looks convenient, but it is actually harmful to the human body There are two reasons: one is that this kind of water is not necessarily boiled, most of it is cold boiled mixed water; The second is that the water that has been boiled repeatedly is definitely not good

Frequent activation will definitely reduce the life of the water dispenser.

Drinking boiled water repeatedly is harmful to the human body.

The water from the water dispenser is not boiled repeatedly.

OK.

The hot water of the water dispenser, as long as it is lower than the set temperature is generally 70-80 degrees, he will automatically boil the water, and his water will be boiled to 100 degrees, and then it will automatically turn off the power and cycle repeatedly, because he has not been boiling the water, so it will not produce nitrite.

The water in the water dispenser does not reach 100°C, and the water is generally about 80°C when it is insulated, so the scale produced is less than that of boiling water (scale, that is, nitrite). It is recommended that you do not turn on the "heat" for a long time when you do not usually drink hot water.

Choice of features. It is quite important to consider the purchase of water dispensers from the perspective of functional use. If you don't like to use a water dispenser to adjust cold drinks, daily only for making tea and coffee, buy a warm water dispenser, both practical and economical, if there are more young people, plus located in the southern tropics, the summer use rate is higher, and like cold drinks, you should buy hot and cold water dispensers.

In addition, there is also an ice and warm three-purpose machine, which can be selected according to your needs.

Yes. Because after the water dispenser turns on the "heat" switch, it will start to boil water until the water temperature reaches its specified maximum temperature (generally seventy or eighty degrees), and it will automatically turn to the "keep warm" switch. When you pour out some of the boiling water, the heater is refilled with cold water, so that the cold water is mixed with the previous hot water, and according to the principle of "heat transfer" in physics, the total water temperature drops.

Therefore, at this time, the water dispenser will automatically "heat" again to the highest temperature, and then turn to the "keep warm" state. As a result, the hot water from the water dispenser will boil repeatedly.

Hello, I am Mr. Zhixing, I am giving you the best answers and suggestions according to your questions, you just need to wait patiently for a while, I will reply to you within five minutes, thank you very much.

Hello, the drinking machine will burn repeatedly. Because after the water dispenser turns on the "heat" switch, it will start to boil water until the water temperature reaches its specified maximum temperature (generally seventy or eighty degrees), and it will automatically turn to the "keep warm" switch. When you pour out some of the boiling water, the heater is refilled with cold water, so that the cold water is mixed with the previous hot water, and according to the principle of "heat transfer" in physics, the total water temperature drops.

Therefore, at this time, the water dispenser will automatically "heat" again to the highest temperature, and then turn to the "keep warm" state. As a result, the hot water from the water dispenser will boil repeatedly. I hope mine is helpful to you.

Hope mine is helpful to you. Please also give a thumbs up, thank you in advance, and I wish you a happy life.

It's not very good.

But the water in the water dispenser is different from boiling the water yourself.

Repeated boiling of self-boiled water, commonly known as "thousand boiling water", repeated boiling of water will turn the nitrate in the water into nitrite, and nitrite will make the hemoglobin in the human body into nitrite hemoglobin, which will make the red blood cells lose the function of carrying oxygen.

However, it takes 100 degrees Celsius for nitrate in water to convert into nitrite, and the water in the water dispenser generally stops heating when it is heated to 85 degrees Celsius, so although the repeated heating of the water dispenser is not very good, it is not a big problem, as long as you pay attention to the hygiene of the water dispenser.

Bad is a certainty.

First of all, the water boiled by the water dispenser is not boiling water at 100 degrees Celsius, and it can be more than 80 degrees, so it cannot achieve the effect of complete disinfection and sterilization (besides, we can't be sure whether the water from the water dispenser is pure water).

Secondly, unless the water dispenser is often cleaned with a special cleaning agent, the dirt and dirt in it are very serious, and we once cleaned the water dispenser in our office, and then we began to boil water and drink it ourselves. (It is also time-consuming, laborious and water-intensive to wash once).

Finally, the water that has been boiled repeatedly is called a thousand boiling water. About this, you can find it in the encyclopedia.

It's okay, you can drink it the same, but it's best not to boil the water repeatedly.

Is it good to come to your water dispenser and boil water repeatedly? Because of the water dispenser, he also gets a certain temperature to boil well, so the water is going to go down to the temperature, and it burns repeatedly.

The hot water of the water dispenser is boiled repeatedly. The hot water of the water dispenser, as long as it is lower than the set temperature, generally 70-80 degrees, will automatically boil the water, and the water will boil to 100 degrees, and then it will automatically turn off the power and cycle repeatedly. However, even if the water in the water dispenser is boiled repeatedly, it will be boiled three or four times at most, and there are many people who use it, and there are people who keep getting water to drink, and the hot water in it will not be stored for a long time, so it will be released.

There is also a kind of water dispenser that is generally connected to the hot water below, and the cold water begins to flow into the storage tank below, so there will be the sound of "goo-goo-goo" pouring water down, which is the situation of adding new water while putting hot water.

Use and maintenance:

1. The handling machine should be handled gently, and when the water dispenser refrigerated by the compressor should be moved as much as possible, if it is to be tilted, its inclination shall not be greater than 45 degrees, and it should be stationary for a period of time after handling before it can work.

2. When using the water dispenser for the first time, clean the containers and pipelines of the water dispenser with clean water, then unscrew the drain valve, and tighten the drain valve after draining the remaining water in the machine. After adding a large bottle of water, turn on the hot water faucet, and then plug in the power supply and turn on the heating switch after the water flows out, so as to avoid dry boiling and prolong the life of the machine.

3. If the water dispenser is out of service for a long time, please turn off the switch of the machine and unplug the power plug, then unscrew the drain valve, drain the remaining water in the machine, and then tighten the drain valve (please pay attention to hot water scalding during the draining process).

4. It is best to disconnect the power supply when not in use at night, which can save energy and ensure safety when no one is in use.

5. During the use of the machine, it is recommended to clean and disinfect it once in about 3 months according to the specific situation, and use it for one year.

6. The water dispenser should be placed in a ventilated place to prevent moisture, avoid direct sunlight, and stay away from heating. The water dispenser should be about 15 cm away from the wall and should not be placed near valuable furniture and other household appliances to avoid splashing water and damaging the items. The water dispenser must be placed smoothly to prevent the machine from making noise.

7. It is forbidden to use organic solvents such as gasoline to clean the surface of the machine.

8. If the power cord is found to be damaged, the water dispenser must be replaced with a special soft cord or contact the dealer. The machine must use a socket with a grounding device and a leakage protector to prevent the enclosure from becoming electrified.

9. Children should not play next to the water dispenser, and if necessary, replace the hot water faucet with a safety faucet to prevent children from being burned.

10. Do not put the metal rod into the back plate ventilation window, so as not to damage the fan or cause electric shock; Do not cover the fan ventilation window to avoid damage to the semiconductor refrigeration components due to poor exhaust and poor heat dissipation.

11. When the water dispenser refrigerated by compressor is disconnected, it must be started again after 3-5 minutes to prolong the life of the machine.

12. When pressing the faucet to receive water, do not use too much force, so as not to fall out or damage the rotating part of the hand.

The water dispenser can drink water that has been boiled repeatedly. Repeatedly boiled water is called boiling water, and there is no discomfort after drinking it. And the traditional water dispenser will not boil the water to boiling, it can only be heated to about 90, so there will be no harm and you can drink it with confidence.

Water dispenser. It is a device that warms or cools bottled purified water (or mineral water) and makes it convenient for people to drink. Bottled water is placed above the machine, which is used in conjunction with bottled water.

Water dispensers are divided into three types: warm, ice hot, and ice warm, and ice heaters are divided into semiconductor refrigerated water dispensers and compressor refrigerated water dispensers. Bottled water is placed above the machine, which is used in conjunction with bottled water. Bottled water dispenser appeared before the middle of the 20th century, this water dispenser is designed as a special connector on the top of the fuselage to place the bucket, the most ** foreign water dispenser puts the bottled water in the lower part of the machine, sucked in by the suction pump, this way is safer and more hygienic than the conventional water dispenser, due to the different water dispensers, there are many kinds of barrel specifications.

If you don't like to use a water dispenser to adjust cold drinks, daily only for making tea and coffee, buy a warm water dispenser, both practical and economical, if there are more young people, plus located in the southern tropics, the summer use rate is higher, and like cold drinks, you should buy hot and cold water dispensers. In addition, there is also an ice and warm three-purpose machine, which can be selected according to your needs.

It's not very good.

But the water in the water dispenser is different from boiling the water yourself.

Repeated boiling of self-boiled water, commonly known as "thousand boiling water", repeated boiling of water will turn the nitrate in the water into nitrite, and nitrite will make the hemoglobin in the human body into nitrite hemoglobin, which will make the red blood cells lose the function of carrying oxygen.

However, it takes 100 degrees Celsius for nitrate in water to convert into nitrite, and the water in the water dispenser generally stops heating when it is heated to 85 degrees Celsius, so although the repeated heating of the water dispenser is not very good, it is not a big problem, as long as you pay attention to the hygiene of the water dispenser.

You can drink it. Nitrite in water is not produced in a vacuum, but is generally converted from the original nitrate in the water. There is very little nitrate in qualified drinking water; However, if the water source is contaminated with nitrogenous organic matter, nitrate levels may increase.

Generally speaking, the reason for the increase of nitrite caused by repeated heating of drinking water is mainly the increase of nitrite concentration due to water evaporation and concentration, but the total amount does not increase; Another possibility is that some nitrates are heatedly broken down into nitrites. China's sanitary standards for bottled water stipulate that the nitrite content in water shall not exceed 2 micrograms per liter.