JP2001190446A - Hand dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable hand dryer for quietly and smoothly blowing high pressure air while smoothly draining water, or the like, splashed from hands. SOLUTION: This dryer is provided with a treatment space, with which hands can be put in/out of an inserting port opened outward, high pressure air generating part provided above this treatment space for making external air into high pressure air and blowing it from a nozzle, water receiving part provided under the treatment space for receiving the high pressure air from the nozzle and the drops of water splashed from the hands by the high pressure air and back wall surface provided on the deep side of the treatment space in the inserting direction for connecting the high pressure air producing part to the water receiving part, and the water receiving part is provided with a channel change part for making the high pressure air from the nozzle flow through the relevant water receiving part to both the sides of the treatment space toward the deep side in the inserting direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand dryer for scattering water droplets on hands.

[0002]

2. Description of the Related Art As a conventional hand dryer for sanitarily and quickly drying wet hands after washing, there is a hand dryer as shown in FIG. In this drawing, reference numeral 1 denotes a high-pressure air generator provided with a blowing means for generating high-pressure air, 2 denotes a high-pressure air generator, which is provided on the bottom wall surface of the high-pressure air generator 1, and 3 denotes a high-pressure air jet nozzle. Nozzle 2
Is disposed below the high-pressure air generator 1 so as to face
A water receiver 4 for receiving high-pressure air from the airflow jet nozzle 2 and water droplets scattered by the high-pressure air is provided inside the water receiver 3, and a drain tank 5 for storing water from the water receiver. Is a jet nozzle 2 and a water receiver 3 of the high-pressure air generator 1
A hand insertion space 6, which is a processing space for inserting and removing a hand, is provided at the back side in the insertion direction of the hand insertion space 5, and connects the high-pressure air generation unit 1 and the water receiving unit 3. The back wall. The blowing means 15 of the high-pressure air generator 1 includes the blades 13 and the motor 14.
Is provided with hand detection means 16 for detecting the presence or absence of a hand in the hand insertion space in the vicinity of the airflow jet nozzle 2.

Next, this operation will be described. First,
When the hand is inserted into the hand insertion space 5 and the hand detection means 16 detects the hand insertion, the blowing means 15 operates and the suction port 1 is operated.
The high-pressure air is generated while compressing the air from the nozzle 9, and is blown out from the air jet nozzle 2 toward the tip jaw of the water receiver 3. As a result, the moisture adhering to the hand is blown off in the direction of the water receiving portion 3 and is collected in the drain tank 4 through a drain hole provided in the wall surface of the water receiving portion 3.

On the other hand, the high-pressure air from which the adhering moisture has been blown collides with the tip jaw of the water receiver 3, and most of the high-pressure air has a processing space 5 provided between the high-pressure air generator 1 and the water receiver 3. Rises along the back wall surface 6 on the rear surface of the high-pressure air generation unit 1, hits the bottom wall surface (nozzle side wall surface) of the high-pressure air generation unit 1 and flows in the direction of the airflow jet nozzle 2. For this reason, the high-pressure air ejected from the nozzle 2 is interfered by the return airflow and emits a sound, and the ejection direction of the high-pressure air is disturbed.

[0005] In addition, since the return air current tends to lift water droplets scattered on the water receiving portion 3 and the back wall surface 6 by the wind force along the wind swirling wall surface, the water droplets are provided on both side surfaces of the water receiving portion 3. It becomes difficult to flow into drains and the like, and the water droplet recovery rate decreases.

Further, in such a hand drying device, even if the wind receiving surface of the water receiving portion 3 has a structure having a gentle slope on both sides, water droplets enter the drainage ditch and the like by the above-mentioned swirling wind force. It becomes difficult to flow, and it is not possible to quickly collect water droplets in the drain tank.

[0007]

As described above, in the conventional hand dryer, the blown high-speed and high-pressure air flow collides with the water receiving portion, and circulates through the high-speed air outlet.
There is a problem that noise is increased due to interference with the blowing air.

In addition, since the high-speed and high-pressure air flow collides with the tip jaw of the water receiving portion and circulates, there is a problem that the water droplet collection rate is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to obtain a hand-drying device which collects water droplets quickly and has a quiet sound.

[0010]

As described above, according to the present invention, there is provided a processing space through which a hand can be inserted and withdrawn from an insertion opening opened to the outside, and a processing space provided above the processing space to remove the external air. A high-pressure air generator that generates high-pressure air and blows out from the nozzle; a water receiver that is provided below the processing space and receives high-pressure air from the nozzle and water droplets scattered from the hand by the high-pressure air; A back wall connecting the high-pressure air generation unit and the water receiving unit, the back wall being provided on the back side in the insertion direction of the processing space, wherein the water receiving unit is configured to receive the high-pressure air from the nozzle in the water receiving unit. A flow path changing unit that changes the flow path of the high-pressure air so that the high-pressure air flows toward both sides of the processing space as it proceeds to the far side in the insertion direction through the unit.

A processing space in which a hand can be inserted / removed from an insertion opening opened to the outside; and a high-pressure air generation unit provided above the processing space for generating the external air into high-pressure air and blowing the high-pressure air from a nozzle. And a water receiving portion provided below the processing space and receiving high-pressure air from the nozzle and water droplets scattered from the hand by the high-pressure air; and a water receiving portion provided on the back side in the insertion direction of the processing space, A back wall connecting the high-pressure air generator and the water receiver, wherein the back wall prevents high-pressure air from the water receiver from flowing toward the high-pressure air generator along the back wall. And a flow path changing unit for changing the flow path of the high pressure air.

A processing space in which a hand can be inserted and withdrawn from an insertion opening opened to the outside; and a high-pressure air generating section provided above the processing space for generating the external air into high-pressure air and blowing the high-pressure air from a nozzle. And a water receiving portion provided below the processing space and receiving high-pressure air from the nozzle and water droplets scattered from the hand by the high-pressure air; and a water receiving portion provided on the back side in the insertion direction of the processing space, A back wall connecting the high-pressure air generation unit and the water receiving unit, wherein the high-pressure air generation unit is configured so that the high-pressure air from the back wall surface is substantially in the same direction as the high-pressure air blown from the nozzle. A hand dryer comprising a flow path changing unit for changing the flow path of the high pressure air so that

In addition, drain grooves are provided on both left and right sides of the water receiving portion, respectively, to collect the water droplets.

Further, the tip of the nozzle is provided so as to face the back wall side.

Further, the tip of the nozzle is provided so as to be located on the inner side of the distal end jaw of the water receiver in the insertion direction at least about 1/5 of the vertical distance between the nozzle and the water receiver. It was done.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Embodiment 1
The hand drying device will be described with reference to FIGS. In these figures, reference numeral 1 denotes a high-pressure air generator provided with a blowing means for generating high-pressure air, 2 denotes an airflow jet nozzle which is provided in front of a bottom wall surface of the high-pressure air generator 1 and jets high-pressure air, 3 denotes A water receiving portion, which is disposed below the high-pressure air generating section 1 so as to face the airflow jet nozzle 2 and receives high-pressure air from the airflow jet nozzle 2 and water droplets scattered by the high-pressure air, 4 is a water receiving portion. A drain tank 5 is provided in the interior of the high-pressure air generator 1 for storing water from a water receiver through a drain pipe.
A hand insertion space 6 is a processing space for inserting and removing a hand, and is provided at the back of the hand insertion space 5 in the insertion direction, and connects the high-pressure air generator 1 and the water receiver 3. It is a wall.

The water receiving portion 3 is provided with high-pressure air from the nozzle 2 on the back side of the water receiving surface in the hand insertion direction.
As shown in FIG. 2, a protrusion 8 serving as a flow path changing portion configured to flow to both sides of the hand insertion space as it collides with a and proceeds to the back side, that is, as shown in FIG. It is provided with one that is directed to the side direction and one whose triangular prism-shaped apex angle is directed to the insertion side direction. The high-pressure air generator 1 includes a blower 15 including a blade 13 and a motor 14, and also includes a hand detector 16 near the airflow jet nozzle 2 for detecting the presence or absence of a hand in a hand insertion space. .

Next, this operation will be described. First,
When the hand is inserted into the hand insertion space 5 and the hand detection means 16 detects the hand insertion, the blowing means 15 operates and the suction port 1 is operated.
The high-pressure air is generated while compressing the air from the nozzle 9, and is blown out from the air jet nozzle 2 toward the water receiving part 3. As a result, water or the like adhering to the hand is blown off toward the water receiver 3 together with high-speed, high-pressure air (for example, 100 m / s).

At this time, the high-pressure air that has blown off the water or the like collides with the water receiving surface 3a of the water receiving portion 3, and most of the high pressure air then moves along the water receiving surface of the water receiving portion 3 in the hand insertion direction. Flows to the side, and flows to both sides of the hand insertion space by the projection 8,
It is blown out.

On the other hand, the water or the like scattered on the water receiving portion 3 flows to the far side of the water receiving portion 3 by the wind of the high pressure air flowing along the water receiving surface of the water receiving portion 3, and then the wind is projected by the projection 8. The flow direction changes, and due to the changed wind force and the gradient of the projection 8, the water flows into the drain grooves 17 provided on both sides of the water receiving portion 3, and is collected in the drain tank 4 through the drain hole 18.

As described above, after the high-pressure air from the nozzle 2 collides with the water receiving portion 3, the projections 8 flow to both sides of the hand insertion space as they proceed in the depth direction of the hand insertion.
Is provided, the high-pressure air that has collided with the water receiver 3 flows to both sides of the hand insertion space and does not collide with the high-pressure air from the nozzle 2, so that water or the like scattered from the hand flows smoothly, A highly reliable hand dryer that quietly blows out high-pressure air smoothly is obtained.

Embodiment 2 FIG. In the second embodiment, a function corresponding to the projection 8 of the water receiving portion 3 of the first embodiment is provided on the back wall surface 6, and other configurations are substantially the same as those of the first embodiment. is there. That is, as shown in FIGS. 5 and 6, high-pressure air from the water receiving portion 3 does not flow to the high-pressure air generating portion side on the back wall surface 6 so as to flow to both sides of the hand insertion space 5 as a flow channel changing portion. Embodiment 1 configured
5 or a V-shaped projection 10 whose apex is directed downward as shown in FIG. 5, or a projection 12 that is changed to be substantially in the same direction as the blowing direction of the high-pressure air blown from the nozzle. Is provided.

Next, this operation will be described. First,
When the hand is inserted into the hand insertion space 5 and the hand detection means 16 detects the hand insertion, the blowing means 15 operates and the suction port 1 is operated.
The high-pressure air is generated while compressing the air from the nozzle 9, and is blown out from the air jet nozzle 2 toward the water receiving part 3. As a result, water or the like adhering to the hand is blown off together with the high-pressure air in the direction of the water receiver 3.

At this time, the high-pressure air that has blown off the water or the like collides with the water receiving surface 3a of the water receiving portion 3, and most of the high pressure air then moves along the water receiving surface of the water receiving portion 3 in the hand insertion direction. Side, collides with the back wall 6, and then rises along the back wall 6, flows toward the hand insertion space 5, flows to both sides of the hand insertion space by the protrusion 10, and is blown out. ,
The projection 12 shown in FIG. 6 changes the direction of the high-pressure air blown from the nozzle so as to be substantially the same as the blowing direction. That is, the high-pressure air from the water receiving section 3 is prevented from flowing along the back wall surface 6 toward the high-pressure air generating section 1 so as not to collide with the high-pressure air blown out from the nozzle.
Make the air flow smooth and undisturbed.

On the other hand, the water and the like scattered in the water receiving portion 3 flow to the back side (back wall surface 6) of the water receiving portion 3 by the wind of the high-pressure air flowing along the water receiving surface of the water receiving portion 3, and Wall 6
However, the flow direction of the wind changes due to the above-described change in the flow of the high-pressure air, and the changed wind force flows into the drain grooves 17 provided on both sides of the water receiving portion 3 and passes through the drain holes 18. Collected in the drain tank 4.

As described above, the flow path changing section is provided so that the high-pressure air from the water receiving section 3 does not flow along the back wall surface 6 toward the high-pressure air generating section side. Since the high-pressure air that has collided with the back wall surface 6 does not collide with the high-pressure air from the nozzle 2, the water and the like scattered from the hand flow smoothly, and the sound is quiet and the reliability of blowing the high-pressure air smoothly is reduced. High hand drying equipment is obtained.

Embodiment 3 In the third embodiment, a part corresponding to the flow path changing part of the back wall surface 6 in the second embodiment is provided on the nozzle surface side (bottom surface) of the high-pressure air generation unit 1, and other configurations are the same. This is almost the same as the second embodiment. That is, as shown in FIG. 7, the flow path change is configured such that the high-pressure air from the back wall surface 6 is directed substantially in the same direction as the high-pressure air blown from the nozzle on the side surface of the nozzle of the high-pressure air generation unit 1. A projection 11 is provided as a part.

Next, this operation will be described. First,
When the hand is inserted into the hand insertion space 5 and the hand detection means 16 detects the hand insertion, the blowing means 15 operates and the suction port 1 is operated.
The high-pressure air is generated while compressing the air from the nozzle 9, and is blown out from the air jet nozzle 2 toward the water receiving part 3. As a result, water or the like adhering to the hand is blown off together with the high-pressure air in the direction of the water receiver 3.

At this time, the high-pressure air that has blown off the water or the like collides with the water receiving surface 3a of the water receiving portion 3, and most of the high pressure air then flows along the water receiving surface of the water receiving portion 3 in the hand insertion direction. Side, collides with the back wall surface 6, then rises along the back wall surface 6, flows toward the high-pressure air generation unit 1, and collides with the nozzle side surface that is the bottom surface of the high-pressure air generation unit 1, The high-pressure air blown from the nozzles is changed by the flow path changing unit 11 so as to be substantially the same as the blowing direction while flowing along this surface, and is blown into the manual insertion space 5.

On the other hand, the water and the like scattered on the water receiving portion 3 will rise on the back wall surface 6 while flowing to the far side of the water receiving portion 3 by the wind of the high-pressure air flowing along the water receiving surface of the water receiving portion 3. However, due to its own weight and the flow change of the high-pressure air described above,
It flows to the drain groove 17 and is collected in the drain tank 4 through the drain hole 18.

At this time, the flow path changing section 11 is
Is provided in the vicinity, the water and the like scattered by the wind of the high-pressure air whose flow path has been changed smoothly flow into the drain groove 17, and the back wall surface 6 rises by the wind of the high-pressure air whose flow path has been changed. The high-pressure air flows to both sides of the manual insertion space 5.

At this time, if the flow path changing section 11 is provided at the bottom end of the high-pressure air generating section 1, that is, in the vicinity of the nozzle 2, water or the like adhering to the hand by the wind of the high-pressure air whose air path has been changed can be removed. Because they are scattered, they are reused for the water droplet scattering force.

As described above, the wind is applied to the side of the nozzle, which is the bottom surface of the high-pressure air generator 1, so that the high-pressure air from the back wall 6 is directed in the same direction as the high-pressure air blown from the nozzle. Since the path change unit is provided, the high-pressure air from the back wall surface 6 passes through the high-pressure air generation unit 1 to the hand insertion space 5.
Water, etc., to further scatter water or the like scattered from the hand, and to smoothly flow water and the like scattered from the hand, and to quietly blow high-pressure air smoothly. A reliable hand-drying device can be obtained.

In the above description, the structure in which the protrusion 11 is provided on the bottom surface of the high-pressure air generator 1 has been described. However, the high-pressure air blown from the back wall 6 through the nozzle is blown out of the nozzle. When the bottom surface of the high-pressure air generating unit 1 is formed in a concave shape so as to be substantially the same as the direction, and is substantially in the same direction as the blowing direction of the high-pressure air blown out from the nozzle, almost the same effect can be obtained. Thus, the number of parts can be reduced.

Embodiment 4 FIG. In the fourth embodiment, in the hand drying apparatus shown in the first to third embodiments, as shown in FIG. 8, the high-pressure air from the airflow jet nozzle 2 is directed to the back wall surface 6 direction. The tip of the airflow jet nozzle 2 is directed to the back wall side.

In this case, the high-pressure air blown out from the nozzle 2 does not directly hit the jaw 7 of the water receiving section 3, so that not only the jaw 7 does not interfere, but also the scattered water and the like can be prevented. Since the floor and the like are not wetted beyond the inner wall surface of the floor 7, the floor can be prevented from being wet by water droplets.

Embodiment 5 In the fifth embodiment, in the hand drying apparatus shown in the first to third embodiments, as shown in FIG.
The horizontal distance in the insertion direction between the inner wall surface and the air flow jetting nozzle 2 is set to be approximately 1/5 (20%) or more of the vertical distance between the air flow jetting nozzle 2 and the water receiving portion 3. .

In this case, even if the high-pressure air at a blowing speed of a general hand dryer (for example, 100 m / s) is taken into consideration, the high-pressure air from the nozzle 2 is supplied to the water receiving portion 3. Not only does not directly hit the jaw 7 and does not receive interference from the jaw 7, but also because splashed water and the like does not wet the floor, etc., over the inner wall surface of the jaw 7, so that the floor wets with water droplets. Can be prevented.

[0039]

As is clear from the above description, the water receiving portion allows the high-pressure air from the nozzle to flow to both sides of the processing space as the high pressure air from the nozzle advances toward the back side in the insertion direction. Since the high-pressure air is provided with a flow path changing unit that changes the flow path of the high-pressure air, the high-pressure air that has collided with the water receiving unit 3 flows to both sides of the manual insertion space and does not collide with the high-pressure air from the nozzle 2. It is possible to obtain a highly reliable hand dryer that smoothly blows water or the like scattered from hands, quietly blows high-pressure air, and has low noise.

Further, the back wall has a flow path changing portion for changing the flow path of the high pressure air so that the high pressure air from the upper receiving portion does not flow along the back wall to the high pressure air generating portion side. The high-pressure air that has collided with the back wall surface 6 via the water receiving portion 3 does not flow toward the high-pressure air generating portion, and does not collide with the high-pressure air from the nozzle 2. And a highly reliable hand dryer that quietly emits high-pressure air with low noise.

Further, the high-pressure air generating section includes a flow path changing section for changing the flow path of the high-pressure air so that the high-pressure air from the back wall surface is substantially in the same direction as the high-pressure air blowing from the nozzle. Since it is equipped, high pressure air from the back wall surface will be blown out to the hand insertion space via the high pressure air generation unit, so that water etc. attached to the hand will be further scattered or water scattered from the hand etc. It is possible to obtain a reliable hand-drying device that can smoothly flow and high-pressure air with a quiet sound.

Further, since drain grooves are provided on both the left and right sides of the water receiving portion, respectively, and the above-mentioned water droplets are collected, the drainage can be speedily performed. Therefore, a hand drying device with good drainage can be obtained.

Also, since the tip of the nozzle is provided so as to face the back wall side, scattered water or the like does not exceed the inner wall surface of the jaw 7 and does not wet the floor or the like. And a highly reliable hand dryer that prevents floor wetting and the like due to the above can be obtained.

Further, the tip of the nozzle is approximately one vertical distance from the inner wall surface of the tip jaw of the water receiver to the nozzle and the water receiver.
/ 5 or more, so that the high-pressure air from the nozzle does not directly hit the jaw 7 of the water receiver,
Not only does the jaw not interfere, but the scattered water does not wet the floor, etc. over the inner wall of the jaw. can get.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hand drying device according to a first embodiment.

FIG. 2 is a schematic perspective view of a hand drying device according to the first embodiment.

FIG. 3 is a schematic configuration diagram of a hand drying device according to the first embodiment.

FIG. 4 is a schematic perspective view of the hand drying device according to the first embodiment.

FIG. 5 is a schematic configuration perspective view of a hand drying device according to a second embodiment.

FIG. 6 is another schematic configuration diagram of the hand drying device according to the second embodiment.

FIG. 7 is a schematic configuration diagram of a hand drying device according to a third embodiment.

FIG. 8 is a schematic configuration diagram of a hand drying device according to a fourth embodiment.

FIG. 9 is a schematic configuration diagram of a hand drying device according to a fifth embodiment.

FIG. 10 is a schematic configuration diagram of a conventional hand drying device.

[Explanation of symbols]

1 high-pressure air generator, 2 air jet nozzle, 3 water receiver, 4 drain tank, 5 processing space (hand insertion space), 6 back wall, 7 jaw, 8 protrusion,
10 Guide, 11 protrusions, 12 protrusions, 1
3 blades, 14 motors, 15 blowers, 16
Sensor (detection means), 17 drain groove, 18
Drain hole, 19 suction port

Continuing from the front page (72) Inventor Manabu Fukano 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Shoji Yamada 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Co., Ltd. In company

Claims (6)

[Claims] 1. A processing space in which a hand can be inserted and withdrawn from an insertion opening opened to the outside, and a high-pressure air generation unit provided above the processing space and configured to generate the external air into high-pressure air and blow out from a nozzle. And a water receiving portion provided below the processing space and receiving high-pressure air from the nozzle and water droplets scattered from the hand by the high-pressure air; and a water receiving portion provided on the back side in the insertion direction of the processing space, A back wall connecting the high-pressure air generating unit and the water receiving unit, and the water receiving unit is arranged such that the high-pressure air from the nozzle travels to the far side in the insertion direction through the water receiving unit. A hand dryer comprising: a flow path changing unit that changes a flow path of the high-pressure air so as to flow to both sides of the processing space. 2. A processing space in which a hand can be inserted / removed from an insertion opening opened to the outside, and a high-pressure air generation unit provided above the processing space and configured to generate the external air into high-pressure air and blow out from a nozzle. And a water receiving portion provided below the processing space and receiving high-pressure air from the nozzle and water droplets scattered from the hand by the high-pressure air; and a water receiving portion provided on the back side in the insertion direction of the processing space, A back wall connecting the high-pressure air generator and the water receiver, wherein the back wall prevents high-pressure air from the water receiver from flowing toward the high-pressure air generator along the back wall. A hand drying device, further comprising a flow path changing unit for changing a flow path of the high-pressure air. 3. A processing space in which a hand can be inserted / removed from an insertion opening opened to the outside, and a high-pressure air generating unit provided above the processing space, for generating the external air into high-pressure air and blowing the high-pressure air from a nozzle. And a water receiving portion provided below the processing space and receiving high-pressure air from the nozzle and water droplets scattered from the hand by the high-pressure air; and a water receiving portion provided on the back side in the insertion direction of the processing space, A back wall connecting the high-pressure air generation unit and the water receiving unit, wherein the high-pressure air generation unit is configured so that the high-pressure air from the back wall surface is substantially in the same direction as the high-pressure air blown from the nozzle. A hand dryer comprising a flow path changing unit for changing the flow path of the high pressure air so that 4. The hand dryer according to claim 1, wherein drain grooves are provided on both right and left sides of the water receiving portion, respectively, to collect the water droplets. 5. The hand dryer according to claim 1, wherein a tip of the nozzle is provided so as to face the back wall side. 6. The nozzle is provided such that the tip of the nozzle is located on the inner side of the distal end jaw of the water receiver in the insertion direction at least approximately ５ of the vertical distance between the nozzle and the water receiver. The hand drying device according to any one of claims 1 to 3, wherein the hand drying device is provided.