JP5371203B2 - Hand dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand dryer which can reduce back blowing of wind to a user, does not scatter waterdrops outside the dryer or drip water to the device periphery so as to maintain hygiene. <P>SOLUTION: The hand dryer is provided with: a case body having a hand insertion part which has an upper part to be opened and a hand is inserted thereinto; a high pressure air stream generator incorporated in the case body for generating high pressure air stream; a nozzle 7 for jetting the high pressure air stream generated by the high pressure air stream generator; a side wall member 1a provided with an air exhaustion opening part 10 for releasing air blown out by the nozzle 7 outside the main body; and a louver 11 which is provided for the air exhaustion opening part 10 of the side wall member 1a and has a plurality of slats inclined downward towards the hand insertion part. Ends of the respective slats are provided with wall shaped projections 13 projecting almost upward. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a hand drying device that hygienically dries wet hands after washing by blowing high-pressure airflow.

  There has been developed a hand dryer that blows away moisture by blowing a high-pressure air flow without wiping the wet hands after washing with a towel or handkerchief. Many devices of this type are designed so that the air in the hand insertion portion blown from the nozzle does not blow back to the user's face. For example, Patent Literature 1 discloses a hand drying device having a structure in which a part of air blown from a nozzle is released to the outside of a main body from an opening provided on a side surface of a hand insertion portion.

JP 2005-329266 A

  In the conventional hand drying device shown in Patent Document 1, an opening for escaping air is provided on the side surface of the hand insertion portion, and a plurality of water droplets flying from the hand are not directly ejected from the opening. The louvers are placed at intervals to block the water, but some of the water droplets that have been blocked by the louver are drooped by gravity and remain in the form of water droplets at the lower end of the louver. Water droplets are blown off by the air flow to be exhausted and blown to the outside, or the water droplets are transferred to the outer surface of the main body and fall off. As a result, wind blow back to the user can be reduced, but each time it is used, the floor and room near the hand dryer, the area near the opening of the hand dryer, and the lower part of the hand dryer are gradually soiled with water droplets. Therefore, it is often left unsanitary.

  The present invention has been made in view of the above, and can reduce the blow-back of the wind to the user, and there is no splashing of water droplets outside the apparatus or dripping of water outside the apparatus, maintaining hygiene. The object is to obtain a hand-drying device that can do.

  In order to solve the above-described problems and achieve the object, the present invention provides a main body box having a hand insertion portion in which an upper portion is opened and a hand is inserted, and a high-pressure air flow is generated in the main body box. A high-pressure airflow generating device, a nozzle that jets the high-pressure airflow generated by the high-pressure air generating device to the manual insertion portion, and an exhaust opening that allows the air blown from the nozzle to escape outside the main body. In each of the hand dryers, comprising: a side wall member of the main body box; and a louver having a plurality of blades provided at an exhaust opening of the side wall member and having a downward slope toward the hand insertion portion. A wall-like protrusion protruding substantially upward is provided at the upper end of the plate.

  According to the present invention, since the wall-like protrusion protruding substantially upward is provided at the upper end of each louver of the louver, unpleasant blowback from the hand insertion opening of the hand drying chamber, Since splashing of water droplets and dripping of water onto the exterior of the apparatus can be suppressed, the periphery of the apparatus and the exterior of the apparatus are not contaminated, and an easy-to-use drying apparatus can be obtained.

  Hereinafter, an embodiment of a hand dryer according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIGS. 1-7 is a figure which shows the structure of Embodiment 1 of the hand-drying apparatus concerning this invention. 1 is an external perspective view of the hand dryer according to the first embodiment, FIG. 2 is a front sectional view, FIG. 3 is a perspective view showing a state in which a side panel is removed, and FIG. 4 is a perspective view showing the inside of the side panel. 5 is a perspective view of the louver, FIG. 6 is a sectional view of the louver, and FIG. 7 is a top view of the louver.

  As shown in FIGS. 1 and 3, the hand-drying device has a main body 1 c that forms a rear outer shell and a front outer shell, and a main body box (main body outer shell) 1 that includes a pair of side panels 1 a and 1 a. . On the upper side of the main body box 1, a hand insertion portion 3 is formed as a concave space having a loading / unloading port (hand insertion port) 4 surrounded by the main body portion 1 c and the pair of side panels 1 a and 1 a. The hand insertion portion 3 has a hand insertion port 4 that is open on the upper side so that a person can insert and remove his / her hand vertically and diagonally up and down with both hands aligned from the front of the main body box 1. It is configured in a container structure. As shown in FIG. 2, the bottom portion 5 of the manual insertion portion 3 has a downward slope from the central portion toward the left and right lateral ends, and a drain port 6 is formed at each lateral end.

  A high-pressure airflow generator 2 is incorporated in the main body box 1. The high-pressure airflow generator 2 includes a DC brushless motor (may be a commutator motor or an induction motor), a drive circuit that drives the DC brushless motor, and a turbo fan or a centrifugal fan that is rotated by the DC brushless motor. In the first embodiment, the high-pressure airflow generator 2 is attached below the manual insertion portion 3 of the main body 1c of the main body box 1, and is automatically operated by a control circuit. The intake side of the high-pressure airflow generator 2 faces an intake passage (not shown) provided in the main body box 1, and is connected to an intake port at the end of the intake passage provided on the bottom surface of the main body box 1. Outside air can be inhaled.

  When the high-pressure airflow generator 2 is composed of a single piece, the outlet of the high-pressure airflow generator 2 is connected to a duct that is bifurcated into the front side and the rear side of the manual insertion portion 3 and branches. At each end of the duct, the air flow sent from the high-pressure air flow generator 2 is converted into a high-speed air flow, and the high-speed air flow is blown out in a horizontal line from the front and rear toward the manual insertion portion 3. A nozzle 7 is connected. When the high-pressure airflow generator 2 is composed of two pieces, one high-pressure airflow generator 2 is connected to the front duct, the other motor is connected to the rear duct, and at each end of each duct, An air nozzle 7 that converts an air flow sent from the high-pressure air flow generating device 2 into a high-speed air flow and blows out toward the manual insertion portion 3 from the front and the rear in a horizontal line shape is connected.

  The two air nozzles 7 are attached to the front portion and the rear portion of the main body 1c near the insertion / removal port 4 in the vicinity of the front and rear, with the blow-off ports facing downwards in a laterally opposite manner. A high-pressure air stream is sprayed on the hand placed inside, and water droplets attached to the hand are peeled off from the surface of the hand without being rubbed together and blown into the hand insertion portion 3.

  A water container 8 for storing drain water from the drain port 6 is detachably disposed in the lower part of the main body box 1 so as to be detachable from the main body box 1, and a drain channel 9 that guides water from the drain port 6 to the water container 8. Is provided. As shown in FIG. 3, the drain port 6 and the drain channel 9 are formed by a side panel 1 a that forms the main body box 1 and a concave portion provided on the main body 1 c side.

  Each side panel 1a is integrally formed with an opening 10 so as to be located on the side of the hand insertion portion 3, and the opening 10 is provided with a louver 11 in which a plurality of blades 11a are arranged in parallel. . As shown in FIG. 5, each slat 11a has a substantially V-shaped cross-sectional shape that opens upward toward a central portion, and each slat 11a is shown in FIG. As shown, it is inclined so as to have a downward slope from the outside of the apparatus toward the inside of the apparatus. At the upper end of each slat 11a, that is, at the outer end of the slat 11a, a wall-like protrusion 13 is provided to prevent water droplets adhering to the slat 11a from being scattered outside by the air blown from the air nozzle 7. It has been. The wall-shaped protrusion 13 protrudes upward from the wing plate 11a in a substantially right angle direction. A bar-like member 14 extending vertically is provided so as to be in contact with the center of the lower ends of the plurality of blades 11a. The lower end portion of the rod-shaped member 14 is located above the bottom portion 5 of the manual insertion portion 3 or the drain port 6. As shown in FIG. 7, it is preferable that the rod-shaped member 14 is a semicircular tube in which the dropped water droplets are not directly hit by the wind and the water droplets attached to the outside of the tube are likely to enter the tube. The rod-shaped member 14 is arranged so that the outer side of the semicircular tube faces the inner side of the apparatus. As the rod-like member 14, a columnar body having a concave cross section or a cylindrical body is also used. The columnar body with a concave cross section is excellent in that, like a semicircular tube, the drop of water does not directly hit the wind, and the water droplet attached to the outside of the tube tends to enter the inside of the tube. Are better.

  Moreover, as shown in FIG. 4, the protruding water-impervious wall 12 is provided around the inside of the device of the opening 10 in the side panel 1a. The side panel 1a is configured to be detachable so that the drainage channel 9 can be easily cleaned.

  In this hand drying apparatus, when both hands are aligned in the hand insertion part 3 from the hand insertion / removal port 4 and is almost inserted into the vicinity of the wrist, the hand is detected by a hand detection sensor (not shown) that detects the hand and is controlled. A high-pressure airflow generator 2 is activated by processing of a circuit (not shown), and a high-speed airflow having high kinetic energy is blown out from the air nozzle 7 into the hand insertion portion 3 and hits the front and back of the inserted hand. The moisture adhering to the hand is blown away to the back side of the hand insertion portion 3. Furthermore, by inserting and removing the hand in the hand insertion part 3, all the water adhering to the entire hand is removed, and the hand is dried. When the hand is completely removed from the hand insertion portion 3 after the hand drying process is completed, it is detected that the hand has been removed by the hand detection sensor that detects the hand, and the high-pressure airflow generator 2 stops.

  The opening 10 formed in the side panel 1a is provided with a louver 11 composed of a plurality of blades 11a, and a wall-like protrusion 13 is provided at the upper end of the blades 11a. A rod-like member 14 is arranged at the center of the lower end of the wing plate 11a, and the tip of the rod-like member 14 faces the drain port 6. A part of the water droplets blown from the hand in the hand insertion portion 3 is blown off to the opening 10 together with the wind. The water droplets blown off to the opening 10 are blocked by the wing plate 11a and the wall-shaped protrusion 13. Although the water droplets adhering to the wing plate 11a are carried toward the outside of the main body by the wind blown from the nozzle 7, the water droplets cannot get over the wall projections 13 and therefore do not scatter outside. The water droplets adhering to the louver 11 are collected at the lower center of the slat 11a by the downward slope toward the hand insertion portion 3 and the downward slope of the V-shaped cross section, and are arranged vertically in contact with the lower center of the slat 11a. 14 is carried to the bottom 5 of the hand insertion portion 3. The water carried to the bottom 5 of the manual insertion portion 3 is stored in the water container 8 through the drain 6 and the drain 9.

  Thus, according to Embodiment 1, by providing the wall-shaped protrusion 13 on the louver 11, it is possible to prevent water droplets adhering to the louver 11 from being scattered outside by the wind blown from the nozzle 7. . Further, the water droplets adhering to the louver 11 and the wall-shaped protrusion 13 are collected at the lower center of the wing plate 11a by the downward slope toward the hand insertion portion 3 and the downward slope of the V-shaped section, and are manually inserted through the rod-like member 14 Since it is carried to the bottom part 5 of the part 3, a part of the water droplets blocked by the louver 11 hangs down by gravity and accumulates in the form of water droplets at the lower end of the slat 11 a, and the air flow exhausted from between the slats 11 a to the outside of the main body It can be prevented from being blown away by the outside and blown out to the outside or transmitted to the outer surface of the main body, and can be prevented from being blown down to the user. A hand dryer is obtained.

Embodiment 2. FIG.
8 and 9 are diagrams showing the configuration of the second embodiment of the hand dryer according to the present invention. 8 to 9 show another embodiment of the louver 11 of the hand-drying apparatus shown in the first embodiment, and are the same as those in the first embodiment except for the configuration related thereto. Therefore, the same parts as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted. FIG. 8 is a perspective view of the louver, and FIG. 9 is a sectional view of the opening of the louver.

  A plurality of sawtooth claws 15 are provided at the lower end of each slat 11a to prevent water droplets that have been shielded from water from dripping due to gravity and staying at the lower end of the slat 11a. The saw tooth 15 has a thin plate at the tip. In this case, the wing plate 11a has a flat plate shape, and each wing plate 11a is inclined so as to have a downward slope from the outside of the apparatus toward the inside of the apparatus, as shown in FIG. A wall-like protrusion 13 is provided at the outer end of the wing plate 11a to prevent water droplets attached to the wing plate 11a from being scattered outside by the air blown from the air nozzle 7.

  By providing the saw tooth claw 15, the water drops drooping on the lower end of the blade 11 a due to gravity are immediately dropped onto the blade 11 a immediately below and dropped on the bottom 5. In this way, the sawtooth claw 15 can quickly drop and remove the water droplets collected at the lower end of the slat 11a. In order to further promote the dripping, the saw tooth 15 is preferably subjected to water repellent finishing. Further, a cover may be provided so that the hand does not contact the saw tooth 15.

  As described above, according to the second embodiment, the air flow exhausted to the outside of the main body flows through the opening 10 during the hand drying, so that the water droplets adhering to the blade 11a are pushed up to the upper end of the blade 11a. Since it stays on the wall-shaped protrusion 13, dripping due to gravity does not occur. By removing the water droplets at the lower end of the slat 11a with the saw tooth 15 after the hand drying is completed, even if an air flow exhausted from the opening portion 10 flows, the water droplets can be prevented from being scattered outside the apparatus.

Embodiment 3 FIG.
10-12 is a figure which shows the structure of Embodiment 3 of the hand-drying apparatus concerning this invention. 10 to 12 show another embodiment of the louver 11 of the hand-drying apparatus shown in the first embodiment, and are the same as those in the first embodiment except for the configuration related thereto. Therefore, the same parts as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted. 10 is a perspective view of the louver, FIG. 11 is a sectional view of the opening when the hand dryer is not used, and FIG. 12 is a sectional view of the opening when the hand dryer is used.

  10 to 12, the wing plate 11 a of the louver 11 has a flat plate shape. In this case, the wing plate 11 a is supported by the side panel 1 a so as to be rotatable about the rotation shaft 16. A wall-like protrusion 13 is provided at the outer end of the wing plate 11a to prevent water droplets attached to the wing plate 11a from being scattered outside by the air blown from the air nozzle 7. The rotating shaft 16 of the slat 11a is provided with a spring 17 such as a mainspring spring. When the hand dryer is not used, the spring 17 is in an unloaded state as shown in FIG. The opening 10 is closed so that the plurality of blades 11a are folded over by the wall-shaped protrusion 13 coming into contact with the lower end of the upper blade 11a. When the hand dryer is used, the wing plate 11a is moved against the urging force of the spring 17 by the wind pressure of the high-pressure air flow blown from the air nozzle 7 so as to make the gradient toward the hand insertion portion 3 gentle. Is opened, air in the hand insertion portion 3 is exhausted, and water droplets flying from the hand are blocked by the louver 11. After the hand dryer is used, the opening 10 is closed again by the restoring force of the spring 17, and the water droplet is removed by the steep slope toward the hand insertion portion 3. Further, when the wing plate 11a closes the opening 10, the louver 11 is vibrated by coming into contact with the upper wing plate 11a, thereby removing water droplets more quickly.

  As described above, according to the third embodiment, the louver 11 is opened and closed by the spring 17, so that when the hand dryer is used, the louver 11 and the wall-shaped protrusion 13 prevent the water droplets from being scattered to the outside. By returning to the initial position after using the drying apparatus, in addition to increasing the descending slope toward the hand insertion portion 3 of the louver 11, the louver 11 is vibrated when the louver 11 returns to the initial position, so that the louver Water droplets adhering to 11 can be largely removed. Since the water droplets adhering to the louver 11 are significantly removed, it is possible to prevent the water droplets adhering to the louver 11 from being scattered outside when the hand dryer is used next time.

  In the third embodiment, a wing plate 11a having no wall-like protrusion 13 may be employed. In Embodiment 3, the spring 17 is used to rotate the movable louver so that the plurality of slats are opened and the air is exhausted only when the apparatus is used, and the plurality of slats are closed except when the apparatus is used. However, another mechanism such as a motor may be employed to rotate the louver.

  As described above, the hand drying device according to the present invention is useful for a hand drying device that hygienically drys wet hands after washing by jetting high-speed airflow.

1 is a perspective view showing a hand drying device of Embodiment 1. FIG. FIG. 3 is a front cross-sectional view showing the hand drying device of the first embodiment. It is the perspective view which removed the side panel of the hand dryer of Embodiment 1. FIG. It is the perspective view which looked at the side panel of the hand dryer of Embodiment 1 from the inner side. FIG. 3 is a perspective view for explaining a louver according to the first embodiment. FIG. 3 is an enlarged cross-sectional view of an opening for explaining the louver of the first embodiment. FIG. 3 is a top view for explaining the louver according to the first embodiment. 6 is a perspective view for explaining a louver according to Embodiment 2. FIG. 6 is an enlarged cross-sectional view of an opening for explaining a louver according to Embodiment 2. FIG. 10 is a perspective view for explaining a louver according to Embodiment 3. FIG. 6 is an enlarged cross-sectional view of an opening for explaining an opening when not in use according to Embodiment 3. FIG. FIG. 10 is an enlarged cross-sectional view of an opening for explaining an opening during use of Embodiment 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body box 1a Side panel 1c Main body part 2 High pressure airflow generator 3 Manual insertion part 4 Outlet / inlet 5 Bottom part 6 Drainage port 7 Air nozzle 8 Water container 9 Drainage channel 10 Opening part 11 Louver 11a Blade 12 12 Impermeable wall 13 Wall-like projection 14 Bar-like member 15 Saw tooth claw 16 Rotating shaft 17 Spring

Claims (6)

A main body box body having a hand insertion portion that is open at the top and inserts a hand, a high-pressure air flow generator that is built in the main body box body and generates a high-pressure air flow, and the high-pressure air flow generator A side wall member of the main body box provided with a nozzle for ejecting a high-pressure air flow to the manual insertion portion, an exhaust opening for escaping the air blown from the nozzle to the outside of the main body, and an exhaust opening of the side wall member In a hand drying apparatus provided with a louver having a plurality of slats provided and inclined downward toward the hand insertion portion,
The upper end of each slat is provided with a wall-like projection that protrudes substantially upward with respect to the slat. The slat has a substantially V-shaped cross section that opens upward in a direction perpendicular to the downward gradient direction of the louver. Hand drying device characterized by.   The hand-drying device according to claim 1, further comprising a bar-like member that is in contact with a lower center portion of each slat and extends vertically.   The hand-drying device according to claim 2, wherein the rod-shaped member is formed of a semicircular tube, a columnar body having a concave cross section, or a column. A main body box body having a hand insertion portion that is open at the top and inserts a hand, a high-pressure air flow generator that is built in the main body box body and generates a high-pressure air flow, and the high-pressure air flow generator A side wall member of the main body box provided with a nozzle for ejecting a high-pressure air flow to the manual insertion portion, an exhaust opening for escaping the air blown from the nozzle to the outside of the main body, and an exhaust opening of the side wall member A hand dryer comprising a louver provided with a plurality of slats inclined downward toward the hand insertion portion, wherein the lower end of each slat has a sawtooth shape. A body box body having a hand insertion portion in which the upper inserts the hand is opened, the high pressure air flow generation device for generating high pressure air flow is built into the body shell, high pressure generated by the high-pressure air flow generation device A side wall member of the main body box body provided with a nozzle for ejecting an air flow to the manual insertion portion, an exhaust opening for escaping the air blown from the nozzle to the outside of the main body, and a manual insertion portion at the exhaust opening. And a louver having a plurality of slats inclined downward, wherein the louver opens a plurality of slats only when the apparatus is used to exhaust air, and a plurality of louvers except when the apparatus is used. It is a movable louver that rotates to close the slats,
The movable louver rotates so as to close a plurality of blades by the force of a spring, and rotates so as to open the blades by a high-pressure air flow ejected from the nozzle,
When the movable louver is rotated so as to close the plurality of blades by the force of a spring, the plurality of blades are brought into contact with each other so as to be overlapped to vibrate each blade.   The hand-drying device according to claim 5, wherein a wall-like protrusion protruding substantially upward is provided at an upper end of each slat.

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