prom.ua
If you are looking for a hand dryer for your establishment, or are wondering what the correct name is for a hand dryer in public restrooms, then read on - features of the hand dryer device, the correct name, the principle of operation, components and types of hand dryers in public toilets.
What is a hand dryer. A toilet hand dryer is, as you might guess, an electrical device for drying hands. Usually installed in public toilets. Dries the user's hands by blowing them with warm air, while the air is taken by the fan / s from the room and heated by the heating element.
The official name of the hand dryer according to GOST 15047 78 is an electric towel.
There are many types of electric towels, they are classified according to a variety of criteria, for example, by the method of inclusion: automatic (they have built-in special sensors that detect moving objects and turn on when they appear in the frame, automatic electric towels come with infrared and capacitive sensors) and push-buttons (for turning on / off it is provided special button).
The principle of operation and device of the hand dryer. The principle of operation and design of an electric towel are similar to a household hair dryer:
There are one or more fans that take air from the room into the dryer, where it heats up a metal coil or other heating element, after which it is blown by a fan onto the user's hands.
The design of the hand dryer is as follows:
Frame. There are two types of electric towel housing - open and closed. Open provides that the user will bring his hands to a special air duct - warm air is blown out of it, blowing and drying hands; moisture and drops that drip from the hands fall to the floor. The design of the closed type provides that you put your hands inside the dryer - there is also a switch-on sensor. Further, warm air also blows over the hands, but moisture and drops from the palms accumulate in a special reservoir, from where they are sent to the sewer. Closed-type electric towels are more thought out from a functional point of view.
Fan. The hand dryer is equipped with one or more fans for faster drying. The main function of the fan/fans is to suck in/expel air. The room air is taken by the fan inside the electric towel, where it is heated, and then blown out by the same or another fan. Drying hands in such devices with fans lasts from 10 to 30 seconds.
prom.ua
A heating element. The main component of an electric towel is a heating element, usually a heating coil made of an alloy of metals. By name it is clear that its function is heating, heating the air with itself. Up to 90% of all electricity used by the dryer is used to power this element. The remaining 10% goes to power the fan and indicators/LEDs.
Control system. Each electric towel is equipped with a control system, as a rule, it is an on / off unit, but in some models, additionally with an air heating control system (you can adjust the temperature of the outgoing air). To turn on the dryer, the manufacturer equips it with either a special button / key, or an infrared / capacitive sensor.
Pros and cons of a hand dryer in the toilet. Recently, electric towels have become very popular, more and more entrepreneurs put them in their establishments. The main advantage of a hand dryer is that it is better than paper towels. Towels need bins that need to be emptied once in a while, and you also need to constantly buy a new batch of towels. The electric towel is mounted once and is powered by electricity, which is much cheaper in the long run. The benefits of electric hand dryers include cost-effectiveness, convenience and efficiency.
Although the electric towel is convenient, practical and economical, it also has its drawbacks. First, it dries out the skin. With frequent use, the skin dries out, which causes pain. Not recommended for people with high airflow sensitivity or unsuitable skin types. Secondly, the dryer blows unsterilized air over your hands - that is, you wash your hands to get rid of bacteria, dirt or bad smell, and during drying you introduce microorganisms again.
As for the latter, it must be said that there are hand dryers with the function of air sterilization / disinfection. But such models are not popular and are extremely rare due to their high cost.
