As the weather gets colder and colder, many little sisters have begun to use hot water bags. Electric hand warming treasure is absolutely the favorite of many office people, but in winter, many negative news about the explosion of hand warming treasure will emerge in endlessly, so how to use it most safely?
Does the charging hot water bag really explode?
Electrode electric heating water bag is a kind of charging hot water bag. At present, it can be divided into liquid filled type and round cake type. Because of the different heating devices, the liquid filled hand warmer can be divided into two types: electrode type and heating wire type. There is not much difference in appearance between the two kinds of electric water bags, but the internal structure is different. The working principle of the electric water bag is to heat the internal liquid through the heating body. There are two positive and negative electrodes in the electrode type warm hand treasure, which directly contact with the electrolyte solution in the bag. After the electrode is electrified, the solution is electrified and heated. The heating time is short, and there is no device to control the temperature, so it is easy to expand or even explode.
What is the liquid in the electric water bag?
The effective ingredients in the electric water bag are iron powder or ferrite. Iron powder or ferrite has ferromagnetism. When it is electrified, it will produce magnetic field. When iron powder or ferrite moves in the magnetic field, it will form eddy current and generate heat. The hot water bag will also make a 'coo' sound. When it reaches about 70 ℃, the hot water bag will automatically stop heating.
How to use electric water bag safely?
1. Although the charging hot water bag has the function of automatic power-off when the temperature reaches a certain value, if the controller is out of control, a safety accident will occur if the hot water bag is continuously charged. Therefore, when charging, it is necessary to place the electric water bag wire socket face up on the table, away from high-grade electronic products, plug the plug tightly and then connect the power supply, remember not to use it during charging. During the charging process, if it is found that the surface temperature of the electric water bag is obviously too high, the bag body expands, or other abnormal conditions (such as abnormal smell, smoke, etc.) occur, immediately unplug the power cord and stop using.
2. The warranty period of common domestic hot water bag is generally 1-3 years. When the used hot water bag is used in the second year, it is necessary to see clearly the service period, check whether there is aging and whether the glue is off-line.
3. Go to the regular store to buy the electric water bag printed with "3C" certification, and keep the shopping voucher. In the process of using the hot water bag, always check whether the seal is in good condition, because the liquid in the hot water bag has strong conductivity, if leakage occurs, it is likely to cause explosion.