First of all, thanks Love to play computer games (igao7. com) and Yidu provide the prototype for this evaluation.

In winter, the weather gets colder and colder. Hand warmers have basically become people's necessities. The traditional hand warmers on the market are mostly plugged in or filled with water. Both have some drawbacks. For example, the warm water bag for irrigation is generally used for about one year due to the aging of plastic glue. And the most worried thing in use is to be careful about water leakage. The author used to squeeze and break every broken thermos bag carelessly in his sleep, which made him very embarrassed and troublesome. The principle of plugged in hand warmer is the principle of short circuit. The principle of metal heating is actually quite dangerous. In particular, some electric hand warmers produced by small factories that do not pay attention to safety are mostly reported in the news, such as explosions, which are hidden dangers to human safety and A hand warmer to be evaluated today, Xiaonuan II, is said to be neither plugged in nor filled with water What is its working principle? How about the operation difficulty and insulation effect? Let's have a look!

1、 Packaging and appearance

The outer package of Xiaonuan II is very simple, and the prototype of the product is drawn by two oval model lines on the front. There are "utility model patent number" and "appearance patent number" in the upper left corner, giving the impression that this patented product has a relatively high technological content.

On the back, the heating principle, operation method and precautions of the product are described in detail. The official explanation of the principle of heating: using the heat absorption and heat release characteristics of polymer phase change insulation materials during phase change, the phase change materials sealed in the plastic shell are melted by means of microwave heating, and then phase change (liquid condensation into solid) occurs in the process of its self heating cooling. In this process, the continuous and stable release of heat is a pure and special change, There is no chemical reaction. Compared with ordinary electric water bags, it has obvious advantages! In short, The black technology of Xiaonuan II is that there is a kind of polymer material inside, which is solid when cooling, and becomes liquid after microwave heating. The liquid dissipates heat during cooling.

When opening the outer packing box, Xiaonuan II appears in front of you. To be honest, the first feeling is "big". It is much larger than expected, because it is thought to be as small as the electric hand warmer in imagination, but it is actually the size of a medium-sized hot-water bag. It is estimated that the reason is that the internal polymer materials account for a large proportion, and can also play a better role in thermal insulation.

Take out the small heater II and put it on the table. It is still very beautiful. It's a little like a white cake, with a strong sense of practicality and simplicity

After careful observation, I found that the main reason is to meet the ergonomic principle and let users have a better experience. For example, it can be placed on the abdomen to increase its heating area.

The back of Xiaowen II is simply embossed with a description of heating time.

The principle of heating has been mentioned previously. It means that there should be a piece of high material molecular material inside the Xiaonuan II microwave hand warmer, which will become liquid after heating. Then the sealing of the product is more critical. If the seal is not good, it is easy to overflow. After carefully watching a circle of plastic knots, it is very tight.

In general, from the appearance, the Xiaonuan II microwave hand warmer is made of all plastic materials, and its hand feel is relatively mild, unlike the cold feeling of the electric hand warmer. Exquisite workmanship, in line with ergonomic principles.

2、 Intimate accessories

When I received the Small Warm II Microwave Hand Warming Treasure, it was quite unexpected. I didn't expect that the express had brought a super big bag. In addition to the small warming II microwave hand warming product itself, the manufacturer also provided three supporting thermal insulation bags, including special waist and abdomen protection bags, thick hand warming bags and multi-purpose thermal insulation bags. When these thermal insulation bags are used together with the Small Warm II Microwave Hand Warmer, not only will the thermal insulation effect be more lasting, but also can prevent burns if they are too hot. The manufacturer did a very good job with small details!

3、 Actual experience and effect

Before starting to use, the author carefully read the requirements for the use of the product, which should be noted: 1. Only microwave heating. Do not use lightwave or barbecue mode. 2. The microwave heating process should not be too long. Generally, it only takes 2.5 minutes to heat in a 1000W microwave oven, while it takes 3 minutes to heat 700 and 800W microwave ovens.

Put it in the microwave oven for heating, because it is the first time to use it and the power of the microwave oven at home is not clear, for safety reasons, it is set to 2.5 minutes.

The heating process feels like baking bread. However, for the first time, I still felt a little empty, hiding far away from the explosion In fact, it was found that it was quite safe after many times of use, because after all, it was only the heating of a solid object (like ice thawing), and there was no danger.

After heating, the author tested the temperature of Xiaonuan II microwave hand warmer. It was found that Xiaonuan II microwave hand warmer had started to heat up, and the temperature on the reverse side was higher than that on the front side. The front temperature is 46.3 degrees, and the reverse temperature is 51.2 degrees. This temperature is very comfortable in this winter. I don't feel hot at all. The temperature is just right, which is the best temperature for human body heating. When testing the insulation effect, it was found that the indoor temperature was about 15 degrees. Finally, keep the temperature for about 5 hours!! 2.5 minutes for more than 5 hours of heat preservation, which is convenient and powerful, was immediately taken over by the home LP, 5555555. In addition, we can see from the official data that the constant temperature is about 55 ℃, and the heat preservation time is up to 8 hours (8 hours is the data measured in the laboratory under the condition of 25 ℃. In the cold winter weather, at least 5-6 hours is absolutely no problem. If it is matched with the thickened cloth cover of durable style, or placed in the quilt to warm the feet, the heat preservation performance can reach more than 10 hours).

4、 Summary

Through the trial of Xiaonuan II Microwave Hand Warmer, the author really "fell in love" with this product, The product has outstanding advantages, convenient, fast, and obvious heat preservation effect In addition, according to the official knowledge, the service life of the product is also relatively long, "repeated heating above 1000, the performance degradation is not obvious". For this black technology hand warmer, we believe that the last thing you want to know is "safety". Although we do not know what the internal polymer material is (there may be trade secrets), the official instructions indicate that the internal polymer material is non-toxic and harmless, but please do not eat it. Therefore, both the internal materials and the physical characteristics of heating and heat dissipation indicate that the Xiaonuan II microwave hand warmer is very safe and can be used with confidence. In the end, if I have to say something about this problem, I would like to say that the additional matching insulation sleeve provided by the manufacturer tastes a bit strong. I suggest you wash and reuse it!

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