Shoe dryer

For effective drying of shoes, a constant influx of warmer, and therefore less humid air than the surrounding air is necessary. According to this principle, the proposed dryer works, the scheme of which is shown in Fig. 1. As heating elements, resistors R1-R12 are used. A fan blows them, and heated air enters the shoes through the air ducts.

The supply voltage to the DC motor M1 of the fan is supplied through the rectifier bridge VD1-VD4, so that the device can be powered from a source of both direct and alternating current (in the latter case, the capacitor C1 smooths out the ripple of the rectified voltage).

Structurally, the dryer consists of a heating chamber and two air pipes inserted into the shoes. The heating chamber is made of a plastic junction box measuring 100x100x35 mm, designed for electrical wiring. A hole with a diameter of 70 mm is cut out in its cover and a fan is fixed from the outside from the power supply unit of a personal computer (Fig. 2) and a two-pin instrument plug for connecting a power source. The fan is installed so that it pumps air into the box. On the reverse side of the cover (Fig. 3), the remaining elements are mounted: resistors R1-R12 - above the fan hole (to blow air), and diodes VD1-VD4, capacitor C1 and resistor R13 - next to the wall of the cover (after checking the device for their performance should preferably be fixed with hot-melt adhesive).

Openings for air ducts are cut in the side wall of the housing. It is convenient to use plastic (unreinforced) water pipes with an internal diameter of 3/4 inch (19 mm). They can be easily processed with simple tools, and when heated, they can be deformed (bent). Cutting off two blanks of the desired length. at one end of each of them with a sharp knife, a cut is made up to about half the diameter, and at a distance of about 60 mm from one another, two holes are drilled for fixing screws.