For dust-free aseptic hand washing and drying equipment, the main principle is to use the two conditions of high temperature and air flow in the physics of water evaporation. Therefore, the built-in heating device also works according to this principle. Mastering the three types of hand dryer heating devices can help us to buy hand dryers.

Let's talk about the hand dryer without heating device. This kind of hand dryer mainly uses the principle of wind to affect the evaporation of water. It is used in some common occasions. For example, some vegetables or food need to be frozen, but for some reasons, the moisture on the food needs to be quickly evaporated. At this time, a hand dryer without heating device can be used to evaporate the moisture on the surface of the object. But the disadvantage of this kind of hand dryer is that the scope of use is relatively small, and the temperature requirements of the working environment are also very strict.

The second is the hand dryer of the heating wire heating device. This hand dryer can have a constant power. It can provide a fixed amount of power whether it is in winter or summer. However, the disadvantage is that the heating power of the heating wire is constant. This temperature in summer is not easy to provide comfort for dry hands.

After zui, let's talk about the PTC heating device hand dryer. The broad development space of PTC heating device hand dryer is foreseeable. Because this hand dryer is a real smart hand dryer. It is not only reflected in the working principle of automatic sensing, but also detailed in its internal structure. Using the PTC heating device hand dryer can save energy on the one hand, because it can adapt to changes in ambient temperature and adjust the power level in time. On the other hand, it can provide a good cushion for the comfort of dry hands. The disadvantage is that this hand dryer is more expensive than ordinary hand dryers.