The present invention relates to a hand dryer comprising inside the casing (1) two hollow chambers (3a, 3b) having: a mouth (36) for the inlet of high-speed air supplied by air propulsion means (4a, 4b) towards a drying chamber (2), inner channels (33) for the conduction and distribution of air thro
The present invention relates to a hand dryer comprising inside the casing (1) two hollow chambers (3a, 3b) having: a mouth (36) for the inlet of high-speed air supplied by air propulsion means (4a, 4b) towards a drying chamber (2), inner channels (33) for the conduction and distribution of air through the inside of said hollow chambers with a low coefficient of friction, and a plurality of air outlet orifices (34) defined in the front plates (31) of the hollow chambers and simultaneously projecting air through orifices (21, 22) of the drying chamber onto the entire surface of the hands inserted and kept still inside said drying chamber (2). The dryer comprises an evaporation device (7) to evaporate the water from the drying chamber (2).
대표청구항▼
The invention claimed is: 1. A hand dryer comprising: a casing (1), a drying chamber (2) integrated in the casing for inserting hands, means for propelling air at room temperature at a high speed through an air circulation chamber towards the inside of the drying chamber, presence and proximity det
The invention claimed is: 1. A hand dryer comprising: a casing (1), a drying chamber (2) integrated in the casing for inserting hands, means for propelling air at room temperature at a high speed through an air circulation chamber towards the inside of the drying chamber, presence and proximity detectors (61) for the automatic actuation of the dryer when the user inserts his or her hands in the drying chamber (2), an electronic control card (6), means for collecting the water released from the user's hands during drying, at least two air outlets arranged in opposite walls of the drying chamber (2), and two flat hollow air circulation chambers (3a, 3b) inside the casing which are parallel to the front and back walls of the drying chamber (2) and demarcated by respective pairs of mutually opposite front and back plates (31, 32); said hollow chambers (3a, 3b) comprising inner channels (33) for the conduction and distribution of air through the inside of said hollow chambers with a low coefficient of friction, minimizing the formation of whirlpools during its circulation through the inside of said hollow chambers, a mouth (36} for the inlet of high-speed air propelled by the air propulsion means (4a, 4b), and a plurality of air outlet orifices (34) defined in the front plates (31) of the hollow chambers which project air simultaneously on the entire surface of the user's hands inserted and held still inside the drying chamber (2); said hollow chambers (3a, 3b) are arranged, respectively, between the front walls of the drying chamber and of the casing, and between the back walls of the drying chamber and of the casing. 2. The dryer of claim 1, in which the opposite walls of the drying chamber (2) have a plurality of orifices (21, 22) distributed on their entire surface. 3. The dryer of claim 1, in which the outlet orifices (34) defined in the front walls (31) of the hollow chambers (3a, 3b) face the respective orifices (21, 22) defined in the opposite walls of the drying chamber (2). 4. The dryer of claim 1, in which the hollow chambers (3a, 3b) have a surface that is equal to or somewhat smaller than the surface of the opposite walls of the drying chamber and in that the air outlet orifices (21, 22) are distributed both horizontally and vertically in said walls. 5. The dryer of claim 1, in which the front plates (31) of the hollow chambers (3a, 3b) externally have tubular extensions (35) arranged in correspondence with the air outlet orifices (34), said orifices (34) having a decreasing section throughout the tubular extensions (35). 6. The dryer of claim 1, in which the front and back walls of the casing (1), the opposite walls of the drying chamber (2) and the plates (31, 32) forming the hollow chambers (3a, 3b) have complementary fitting means for the overlapping or sandwich-type coupling. 7. The dryer of claim 1, in which the high-speed air propulsion means (4a, 4b) are actuated simultaneously at the beginning of the drying cycle and remain simultaneously operative during said drying cycle, projecting high-speed air simultaneously through all of the outlet orifices (34) towards the drying chamber (2). 8. The dryer of claim 1, in which the air propulsion means comprise two turbine motors (4a, 4b) housed inside the casing (1) and connected directly to the respective inlet mouths (36) of the hollow chambers (3a, 3b). 9. The dryer of claim 1, in which the drying chamber (2) is open vertically towards the upper area of the casing (1) and laterally in divergent directions towards the front of the dryer, said drying chamber (2) having a "V"-shaped configuration in plan view with the intermediate edge or vertex oriented towards the back middle area of the casing (1). 10. The dryer of claim 1, further comprising an evaporation device (7) for the evaporation of the water from the drying chamber (2), said device including: a low-power electrical resistor (73) controlled by the electronic control card (6) and a ventilator (74) propelling the steam to the outside of the casing (1). 11. The dryer of claim 10, in which the electrical resistor (73) is housed inside a tubular body (71), arranged in a considerably horizontal position inside the casing (1) and having at the upper portion a mouth (72) for the connection of the drain duct (24) to drain the water from the drying chamber (2). 12. The dryer of claim 10, in which the ventilator (74) is assembled on one of the end mouths of the tubular body (71), an outlet duct {75) for the steam to exit to the outside of the casing (1) being connected to the opposite mouth of said tubular body. 13. The dryer of claim 10, in which the resistor (73) is housed inside a heat conductive sleeve (76) having cooling fins (77). 14. The dryer of claim 11, in which the tubular body {71) has a screen or grating (78) in the upper mouth (72) for separating the water from the drying chamber (11) into fine drops or particles.
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