JP2005185646A - Hand dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand dryer with clean feeling, which securely guides water droplets on a water receiving plate and a wall surface of a hand insertion chamber to a water receiving tray. <P>SOLUTION: The hand dryer includes a hand insertion chamber into which hands are inserted and a high pressure air flow generating device, and dries the hands by jetting high-pressure air flow from a nozzle to the hands inserted into the hand insertion chamber. In the hand dryer, the lower part of the water receiving plate has an extension portion extended from the wall surface of the hand insertion chamber to the inward direction of the water receiving tray and a bent portion obtained by bending the end of the extension portion downward, and the bent portion is disposed at a position where the water droplets are guided into the water receiving tray. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hand-drying device that blows off water droplets after hand washing with a high-speed airflow and dries, and in particular, water droplets on the water receiving plate and on the wall surface are surely introduced into the water receiving tray and suitable for low noise during operation. It is invention regarding the structure of a proper water receiving part.

  As shown in the perspective view of FIG. 1 of the conventional technical document as a whole, the conventional hand-drying apparatus has a high-pressure air flow generator 2 incorporated in the upper part of the main body box 1 with the front surface opened. A water receiving portion is provided by forming a processing space 3 in which a hand can be taken in and out between the high pressure air flow generating portion 2 and a drain container 4 for receiving water from the water receiving portion below the water receiving portion. Is provided so that it can be inserted and removed from the front surface of the main body box 1.

The high-pressure airflow generation unit 2 sucks air from a suction port 5 opened to the upper left and right of the processing space 3, generates high-pressure air, and blows moisture near the hand insertion port on the front surface of the processing space 3. A high-speed air stream as an air stream is formed downward.
The bottom of the treatment space 3 is configured as a water receiving part having a drain hole 6. This water receiving portion is held in a manner that can be engaged with and disengaged from the water guiding frame 7 extending from the main body box 1 to the inside of the projected plane area of the drain container 4 accommodated under the water receiving portion and extending from the left and right sides to the rear surface. It is comprised with the water-receiving plate 8 made to do.

As shown in FIG. 3 and FIG. 4 of the related art, the water guide frame 7 is configured in a U-shaped cross section or a simple flange shape, and is provided on the inner surface of the main body box 51 with a downward slope toward the rear side.
The water receiving plate 8 is a flat plate provided with a drain hole 6 on the back side, and is supported from the front surface of the main body box 51 to the water guide frame 7 so that it can be inserted and removed in a shelf shape.
Since the corner portion between the water guide frame 7 and the main body box 51 is widely opened when the water receiving plate 8 is removed, the portion can be easily cleaned.

In the hand dryer configured in this way, water droplets blown from the hand by high-pressure air adhere to the wall surface of the hand insertion portion 3 and the water receiving plate 8, and the adhered water droplets are water droplets on the inclined water receiving plate 8. Is pushed away by the high-speed airflow and moves in the direction of the drainage hole 6 on the back side, but since there is a wall surface in the vicinity of the back surface, the high-pressure air blown off is reflected on the wall surface and turbulence is generated near the back surface, In the vicinity of the side, the effect of flushing by the high-speed airflow becomes small.
For this reason, if the inclination is not considerably large, water droplets remain in the vicinity of the back surface of the water receiving plate 8. Further, since the drain hole 6 is provided inside the water guide frame 7, water remains behind the drain hole 6. Since the water receiving plate 8 is freely detachable, the water remaining behind the drain hole 6 and the water droplets remaining on the wall surface of the manual insertion portion 3 do not fall into the drain container 4 and are still in an inclined flow. There was a problem that it entered from the peripheral edge of the backing plate 8, transferred along the wall surface of the box body and collected at the bottom of the main body box body, and leaked out of the main body box body when the accumulated water increased.
Moreover, the cleanliness of the water receiving part was impaired. Further, there is a problem that wind noise is generated when high-speed gas passes through the hole opened in the water receiving plate, and the operation noise is increased.
JP 2003-164390 A (page 4, FIGS. 1 to 5)

  The present invention has been made to solve the above-described problems, and the problem of the present invention is that water droplets on the wall surface of the water receiving plate and the manual insertion chamber can be reliably guided to the water receiving tray and are generated by the drain holes. It is to obtain a hand drying device that suppresses wind noise.

  In order to achieve the above object, according to the first aspect of the present invention, a hand insertion chamber in which a hand opened in the front of the box can be taken in and out, and a high-speed air current is ejected to the hand inserted in the hand insertion chamber. A water receiving plate disposed below the manual insertion chamber, provided with a gap for guiding water between the high pressure airflow generation device and a wall of the manual insertion chamber that receives water droplets of the hand blown off by the high-speed airflow. And a water receiving tray for storing water drops on the water receiving plate and a water receiving tray for storing water droplets on the water receiving plate, in the water receiving tray below the water receiving plate from the wall surface of the previous manual inserting chamber. An extension portion extending in the direction and a bent portion that bends the tip of the extension portion downward, and the bent portion is disposed at a position for guiding the water droplet to the inside of the water receiving tray. Set up.

According to this configuration, the water droplets on the water receiving plate and on the wall surface of the manual insertion chamber are reliably received by the extending portion that bends the tip disposed at the position leading to the inside of the water receiving tray. It can be guided to the inside, water droplets can be prevented from accumulating at the bottom of the main body box, and water leakage from the main body box to the outside can be prevented.
In addition, wind noise can be reduced by eliminating drain holes.

According to a second aspect of the present invention, the extending portion is inclined downward from the wall surface of the manual insertion chamber toward the inside of the water receiving tray.
According to this configuration, the water droplets on the water receiving plate and the wall surface of the manual insertion chamber further flow due to the downward gradient of the bent portion that bends the tip disposed at the position leading to the inside of the water receiving tray. It becomes easy to remove the remaining water droplets on the extension part, and cleaning becomes easy and hygienic.

  According to the present invention, water drops on the wall of the water receiving plate and the hand insertion chamber can be reliably guided to the water receiving tray, water leakage from the hand drying device can be prevented and wind noise can be reduced, There is an effect of obtaining a clean and quiet hand dryer.

The embodiment of the present invention shown in FIGS. 1 to 4 relates to a wall-embedded hand-drying apparatus in which most of the portion except the front portion is embedded in a wall.
FIG. 1 is an external view showing a hand dryer of the present invention, and FIG. 2 is a cross-sectional view showing the structure of the hand dryer of the present invention.
FIG. 3 is a local detailed view showing the structure of the first embodiment of the hand drying apparatus of the present invention, and FIG. 4 is a local detailed view showing the structure of the second embodiment of the hand drying apparatus of the present invention. is there.
1 and 2, a hand drying apparatus A according to the present invention is a main body box 51 with the front opened, and a hand insertion chamber for drying the hand by inserting a hand from the opening at the back of the front opening. The three surfaces other than the front opening of the manual insertion chamber 52 are wall surfaces 51 a configured by the main body box 51.

As shown in FIG. 2, a functional part B that ejects a high-speed air flow is incorporated on the upper side of the manual insertion chamber 52, and a surface cover 56 is attached so as to cover the functional part B.
The functional part B is screwed so as to be detachable from a stainless steel main body box 51 with a hairline manufactured in a watertight manner, and can be taken out from the main body box during maintenance.
Below the function part B, an air suction port 61 opened to the upper back side of the hand insertion part 2 is opened. The air suction port 61 is provided with a water suction preventing plate 61a substantially perpendicular to the wall surface 51a so as not to suck water droplets scattered on the wall surface, and sucks only air from the horizontal direction.
A water receiving portion C including a water receiving plate 55, an extending portion 58, and a water receiving tray 54 that receives water from the extending portion 58 is provided below the manual insertion chamber 52.

The sucked air passes through the filter 62 provided in the intake passage and is guided to the suction side of the turbo fan 66. The filter 62 can be removed by pulling a filter handle 62a provided on the hand insertion chamber 52 side, and the filter 62 can be easily cleaned.
The high-pressure air pressurized by the turbo fan 66 is heated by a PTC heater 69 provided in an exhaust passage 68 communicating with the nozzle 59 for ejecting high-pressure air to the turbo fan 66 and the hand, and is ejected from the nozzle 59. Is done.
The nozzle 59 is provided on the upper front surface of the manual insertion chamber 52, and the jet angle of the high-pressure air is slightly inclined backward from the vertical. Thereby, there exists an effect which suppresses scattering of the water droplet to a user side.
A sensor 60 for detecting a hand inserted into the hand insertion chamber 52 is provided on the back side of the nozzle 59. The detection distance of the sensor 60 is set to about half of the opening height of the manual insertion chamber 52.

When the sensor 60 detects a hand, the motor 67 of the high-pressure airflow generation device 57 is activated, high-pressure air is generated by the turbofan 66, and is ejected from the nozzle 59 to the wet hand as high-speed air of 60 to 130 m / sec. Is done.
The water receiving portion C provided below the manual insertion chamber 52 is provided with a water receiving plate 55 inclined rearward toward the back side of the manual insertion chamber 52, and both side surfaces of the water receiving plate 55 are directed downward. It is bent toward the surface and spot welded to the wall surface 51 a of the main body box 51.
A gap 64 is provided in the wall surface 51 a on the back side of the manual insertion chamber 52 and the water receiving plate 55.
The extending portion 58 provided below the water receiving plate 55 is bent downward in a substantially U-shaped cross section so as to face the upper opening 54a of the water receiving tray 54, and is fixed to the wall surface 51a in a watertight manner. ing.
The water receiving tray 54 is locked to the stopper 70 and can be lifted and pulled out to the front, so that the water in the water receiving tray 54 can be discarded. Further, a surface sheet 54 b with the same hairline-like decoration as the main body box 51 is attached to the water receiving tray 54 made of a translucent resin. Moreover, the water level confirmation window 3 is provided in a part of the top sheet 54b, and the amount of water in the water receiving tray can be confirmed.

The contents of the present invention will be described in detail with reference to FIG.
The depth of the manual insertion chamber 52 is about 160 mm, and the stainless steel water receiving plate 55 has a gentle inclination of 3 ° from the front side of the manual insertion chamber 52 toward the back side.
A gap 64 between the water receiving plate 55 and the wall surface 51a on the back side of the manual insertion chamber 52 is 1.5 mm. The distal end of the water receiving plate 55 is bent downward, and a 3 mm round 55c is applied to the bent portion, and the bent distal end has a hanging portion 55d having a length of 8 mm downward. Is provided.
Below the hanging portion 55d, an extending portion 58 is fixed or integrally provided along the wall surface 51a.
The extension portion 58 is bent downward so that one end is directed into the water receiving tray 54, and the bent portion is provided with a 3 mm radius 58b, and the bent end portion is 6 mm long downward. A refraction part 58a is provided. Further, the other end of the extending portion 58 is provided in a watertight manner on the wall surface 51a.

In the hand dryer having these structures, water droplets scattered from the hand adhere to the wall surface 51 a and the water receiving plate 55. Water droplets adhering to the wall surface 51a are guided to the water receiving tray 54 from the gap 64 through the extension 58 by its own weight.
Since the extending portion 58 is water-tightly bonded and fixed to the wall surface 51a, water cannot leak along the wall surface 51a. Further, since the water droplets on the extension portion 58 are guided in the direction of the bent tip portion of the extension portion 58 on the front side of the hand insertion chamber 52, the water droplets are not formed as in the case where the tip portion is cut off. The water is surely guided to the water receiving tray 54 without going through the back surface of the extending portion 58 and flowing to the inner wall of the main body box 51.

In addition, by providing the extended portion 58 with the round 58b, a water droplet that tends to stay on the extended portion due to surface tension can easily flow.
Furthermore, since the extending portion 58 is provided with an inclination 58c of about 3 °, water droplets that try to stay on the extending portion can be reduced. Sex can also be maintained.

Wind noise is generated when the high-speed airflow passes through the gap 64. However, since the gap 64 is arranged with a slight gap close to the wall surface 51a, the high-speed wind extends directly downward from the gap 64. Without being sucked in the direction of the portion 58, most of the high-speed wind hits the wall surface 51a, and the speed is attenuated. Can be suppressed.
Moreover, since the rigidity of the water receiving plate 55 is improved by the hanging portion 55d, generation of vibration noise can be suppressed.

  Also, as shown in FIG. 4, if the extending portion 58 is inclined toward the water receiving tray, the water remaining on the extending portion 58 can be reduced and water can be reliably guided to the water receiving tray 54.

It is an external view which shows the hand-drying apparatus of this invention. It is sectional drawing which shows the structure of the hand dryer of this invention. It is a local detail drawing which shows the structure of the 1st Example of the hand dryer of this invention. It is a local detail drawing which shows the structure of the 2nd Example of the hand dryer of this invention.

Explanation of symbols

A ... hand dryer B ... functional part C ... water receiving part 51 ... main body box 51a ... wall surface 52 ... hand insertion chamber 53 ... water level confirmation window 54 ... water receiving tray 54a ... upper opening 54b ... surface sheet 55 ... water receiving plate 55c, 58b ... Earl 55d ... Sag part 56 ... Surface cover 57 ... High-pressure airflow generator 58 ... Extension part 58a ... Bending part 58c ... Inclination 59 ... Nozzle 60 ... Sensor 61 ... Suction port 61a ... Water suction prevention plate 62 ... Filter 62a ... Filter handle 63 ... Water drop 64 ... Gap 65 ... Intake passage 66 ... Turbo fan 67 ... Motor 68 ... Exhaust passage 69 ... PTC heater 70 ... Stopper 71 ... Water flow

Claims (2)

A hand insertion chamber in which the hand opened in the front of the box can be taken in and out, a high-pressure air flow generator for ejecting a high-speed air current to the hand inserted in the hand insertion chamber, and water drops of the hand blown off by the high-speed air current Receiving a water receiving plate disposed below the manual insertion chamber provided with a gap for introducing water between the wall surface of the manual insertion chamber and water drops on the wall surface of the manual insertion chamber and the water receiving plate. In the hand drying device comprising a water receiving tray for storing water, an extension portion extending from the wall surface of the manual insertion chamber to the inside of the water receiving tray is formed below the water receiving plate, and the extension portion A hand-drying device characterized in that a bent portion that bends the tip of the water is formed, and the bent portion is disposed at a position for guiding the water droplet to the inside of the water receiving tray. The hand drying apparatus according to claim 1, wherein the extending portion has a downward slope from the wall surface of the hand insertion chamber toward the inside of the water receiving tray.

Images