JPH0956640A - Hand dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a hand dryer utilizing a narrow corner part of a washroom or the like by forming a main body in such a manner that the back is formed by two faces right-angled to each other to the front, and the plane of projection is a right-angled isosceles triangle, and providing the front of the main body with a recessed hand insert part recessed toward the back, the front and both sides of which are open. SOLUTION: A main body 1 is formed in such a manner that the front is provided with a recessed hand insert part 3, the front and both sides of which are open, the back is formed by two faces 4, 5 right-angled to each other is formed to the front, and the plane of projection is a right-angled isosceles triangle or a form similar to a right-angled isosceles obtained by chamfering or rounding the angle parts thereof. The hand insert part 3 is formed as an oblique U-shaped recessed part inclined downward to the inner part near the lower part of the front of the main body 1. Substantially opposite air blowoff nozzles are fitted to the upper and lower sides in the hand insert part 3, plural nozzle holes are formed in a line in the lateral direction on each air blowoff nozzle, and high pressure air flow sent from a high pressure air flow generator is converted to an operating air current to be blown off.

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 drying a wet hand after washing in a sanitary and quick manner by blowing air.

[0002]

2. Description of the Related Art In order to maintain a hand in a hygienic state, it is necessary to hygienically dry the hand after washing it as well as wash the hand. Directly dry, for example, Shokai 63-1
A hand dryer as disclosed in Japanese Laid-Open Patent Publication No. 54138, Japanese Utility Model Laid-Open No. 63-163693, and Japanese Patent Laid-Open No. 6-293055 is used.

[0003] These are a warm air type in which warm air is applied to the hand and the moisture adhering to the hand is evaporated by the heat of the hot air, and a high-speed air flow is applied to the hand, and the moisture adhering to the hand by the kinetic energy of the air flow. It is roughly divided into a blow type that blows away. The warm air type is
Since the hot air is directly applied to the hand, the temperature of the hot air cannot be raised, and the drying process takes time, which is troublesome and troublesome in use. On the other hand, the blow type uses the kinetic energy of the wind to blow away moisture from the hand, so the process is speedy and has little trouble or trouble.

[0004]

The conventional blow-type hand dryer as described above requires a high-pressure air flow generator for generating a high-pressure air flow to form a high-speed air flow, which is a large device. Therefore, it is difficult to set up well in a narrow place. In addition, the high-pressure airflow generator is often installed below the processing unit because of the stability of the device and the need for the drying processing unit to be about the height of the hand. Since there is a risk of invasion into the air flow generator, waterproofing measures must be taken near the high pressure air flow generator, which complicates the configuration. In addition, there is a system that collects blown water in a drain tank, but in the case of installation in a washroom, it may be convenient to drain the drain using the drainage facility of the washroom as it is. However, it cannot be easily dealt with.

The present invention has been made to solve the above-mentioned conventional problems. The problem is that the processing is quick and easy to use, and it can be installed using a narrow corner portion such as a washroom. It is to obtain a compact hand dryer, to simplify the waterproof measures of the device, to prevent water from splashing to the adjacent wall surface, and to easily drain the water depending on the installation location. To get a hand dryer that can be changed.

[0006]

In order to achieve the above-mentioned object, the invention of claim 1 is constituted by two surfaces whose rear surface is perpendicular to the front surface and whose projected plane shape is an isosceles right triangle or its shape. The body is constructed in a shape similar to a right-angled isosceles triangle with chamfered or rounded ridges, and a concave hand insertion part that is open to the front and both sides and dents backward is provided on the front of this body. An air blowing nozzle is disposed in the air blowing nozzle, and a means for feeding a high pressure air flow of a high pressure air flow generator that blows the air that is incorporated into the main body and sucked in as a high pressure air flow to the air blowing nozzle is adopted.

In order to achieve the above-mentioned object, the invention of claim 2 comprises the high-pressure airflow generating device in the means according to claim 1, which comprises a motor and an impeller rotated by the motor.
A means for incorporating the rotating surface of the impeller into the main body in parallel with any one of the two surfaces forming the back surface of the main body is adopted.

In order to achieve the above object, the invention of claim 3 employs means for assembling the high-pressure airflow generator in the means according to claim 1 or 2 above the manual insertion part of the main body. .

In order to achieve the above-mentioned object, the invention of claim 4 provides air by air supply from a high-pressure air flow generator to both open sides of the hand insertion portion in the means according to claim 1 or 2. A means for providing an air nozzle that forms a curtain is adopted.

In order to achieve the above object, the invention of claim 5 drains the drain generated in the hand insertion portion formed on the front surface of the main body to a removable drain tank provided below the hand insertion portion. In addition to the configuration, the drain tank is formed in advance with a cutting portion that can be partially cut off, and the portion formed by cutting this cutting point serves as a drainage guide for discharging water in a predetermined direction. Adopt the means to do.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be specifically described with reference to the drawings. 1A and 1B are plan views of a hand dryer as a basic embodiment of the present invention. 2 is an enlarged perspective view showing the configuration of the main part, FIG. 3 is a front view of the entire apparatus, and FIG. 4 is a side view of the entire apparatus. This hand dryer has a relatively simple body 1
And a high-pressure air flow generator 2 for generating a high-pressure air flow, which is placed in a place where hand drying treatment is required, such as a washroom (a washbasin, a dressing table, or a container with an appropriate height). It will be used as a generic name for the platform structure.)

The main body 1 has a front surface and a concave hand insertion portion 3 open on both sides on the front surface, and a projected plane shape composed of two surfaces 4 and 5 whose back surfaces are perpendicular to the front surface is shown in FIG. Of a
1 is an isosceles right triangle, or a ridge corner thereof is chamfered or rounded into a shape similar to the isosceles right triangle as shown in FIG. 1b. The hand insertion portion 3 is configured as a slanted U-shaped concave portion which is inclined downwards toward the back side, and is arranged near the lower part of the front surface of the main body 1 so that the user does not feel uncomfortable or anxious when both hands are naturally aligned and extended. It has a frontage, a height and a depth that allow hands to be freely inserted and removed in a visible state, and a drainage port is provided at the bottom on the back side. A drain pipe 7 that connects to a drain tank 6 that is detachably mounted below the hand insertion portion 3 is connected to the drain port.

Air blowing nozzles 8 and 9 which are substantially vertically opposed to each other are mounted in the hand insertion portion 3. The upper air blowing nozzle 8 forms a downward pressure gradient in the upper part of the inlet of the manual insertion part 3, and the lower air blowing nozzle 9 forms a downward pressure gradient in the lower part of the inlet of the manual insertion part 3 from the inlet to the back. It is mounted laterally with a certain inclination. Each of the air blowing nozzles 8 and 9 is formed with a plurality of nozzle holes in a row in the lateral direction, and the high-pressure air flow sent from the high-pressure air flow generator 2 is from 50 m / s to 150 m / s.
It can be converted into a working air flow of s wind speed and blown out.

In addition to the air blowing nozzles 8 and 9, left and right air nozzles 10 are attached to the upper portion of the hand insertion portion 3 along the open portions on both sides thereof downward. The left and right air nozzles 10 have air blowing nozzles 8, 9
Similarly to the above, the high pressure air flow from the high pressure air flow generator 2 is supplied to form air curtains by the high speed air flow vertically downward or slightly inward on both sides of the manual insertion portion 3.

Further, 5c is provided on the entrance side and the back side of the hand insertion portion 3.
A sensor (not shown) for detecting entry and exit of the hand into and from the hand insertion portion 3 is attached at an interval of about 15 cm from m. The sensors are a plurality of photo LEs arranged side by side.
And an infrared light receiving element such as a plurality of phototransistors arranged side by side,
The light emitting side is attached to the lower side wall surface, and the light receiving side is attached to the upper side wall surface which is less affected by external light.

As shown in FIG. 2, the high-pressure airflow generator 2 includes a DC brushless motor 11 (which may be a normal commutator motor), an electronic circuit for driving the DC brushless motor 11, and a turbo rotating by the DC brushless motor 11. Fan 12
And is incorporated above the hand insertion portion 3 of the main body 1. The rotation surface of the impeller of the turbo fan 12 is a two-sided surface 4, 5 which constitutes the back surface of the main body 1 as shown in FIG.
By installing the blades so that they are parallel (preferably parallel) to any one of the two surfaces, the pressure loss due to the bending of the air passage can be made smaller than when the impeller rotating surface is placed at a right angle to the two surfaces 4 and 5. The center of gravity of the DC brushless motor 11 is substantially aligned with the center of the projected plane shape of the main body 1. As a result, the high-pressure airflow generator 2 having a predetermined size can be incorporated into the main body 1 having the minimum volume, the entire device becomes compact, and the installation state of the device installed in a relatively high place can be improved. It also increases stability. Electrical components such as electronic circuits are housed in a circuit box 13 mounted near the high-pressure airflow generator 2.

One end of an air duct is connected to the turbofan 12 side, which is the exhaust side of the high-pressure airflow generator 2. A high-pressure air flow is supplied to each of the air blowing nozzles 8 and 9 of the hand insertion portion 3 and the air nozzle 10 by this air duct. On the other hand, the suction side of the high-pressure airflow generator 2 is connected by a duct to an intake hole 14 that is open at the back of the manual insertion section 3.

As shown in FIG. 5, the drain tank 6 is a flat container type plastic molded product which is attached to the lower part of the main body 1 so that it can be inserted and removed from the front, and the drain generated in the manual insertion part 3 is stored. You can The drain tank 6 is preformed with a structure capable of opening the front portion. That is,
In the front part, a cut portion 15 which can be separated from the upper surface and both sides is formed as a thin portion. The cutting point 15 on the upper surface is formed in an isosceles triangle shape having the apex 16 at the center of the upper end of the front surface. If this cutting point 15 and the cutting points 15 on both sides are separated, the front part is connected at the bottom surface as shown in FIG. You can let it hang down.

The drain tank 6 is applied to the main body 1
The present invention can be widely applied to this type of hand dryer that blows off water by the working air flow regardless of the shape. Further, the sensor provided in the hand insertion portion 3 is connected to the electronic circuit related to the high-pressure airflow generator 2, and the infrared rays of the infrared ray emitting elements on the inlet side and the back side are both blocked, so that the infrared ray receiving elements are prevented from receiving light. Then, the high-pressure airflow generator 2 is operated by the electronic circuit. Then, when both the infrared rays of the infrared ray emitting elements on the inlet side and the far side are received by the light receiving element, a signal for hand absent detection is formed and the high-pressure airflow generator 2 is stopped.

In this hand dryer, as shown in FIG. 7, two surfaces 4 and 5 constituting the back surface of the main body 1 are provided on the corner wall at a place where hand drying processing is required such as a washroom. It is installed along with. In the actual installation, it will be mounted on a dedicated or existing triangular cabinet to take measures to prevent falls. The fact that it can be installed in the corner portion in this way does not project from the flat wall surface, so that no unnecessary space can be created by installing it in a washroom or the like, and it can be used as a dead space, and the corner portion that is easy to use can be used, which is significant.

By inserting a wet hand into the hand insertion part 3 on the front of the hand drying device thus installed, the water content of the hand is absorbed by the high-speed working air flow formed in the hand insertion part 3. It can be blown away to the back side and the drying process can be performed quickly in a visible state with no anxiety in the hands. That is, when a wet hand is inserted into the hand insertion portion 3 and both the infrared rays of the infrared light emitting elements on the entrance side and the back side are blocked and the light reception of the infrared light receiving element is blocked, each of the high-pressure airflow generators 2 is controlled by the electronic circuit. DC
The brushless motor 11 starts and the turbo fan 12 rotates. By the rotation of the turbo fan 12, a high-pressure air flow is sent from the air duct to each of the air blowing nozzles 8 and 9 and the air nozzle 10, and the air blowing nozzles 8 and 9 of the hand insertion portion 3 are inclined at a predetermined angle to the back of the hand and the palm. A high-speed working airflow is simultaneously blown to both sides. The water droplets on the hand are blown off to the front, that is, on the back side of the hand insertion portion 3 by this operating air flow.

At this time, since the air curtains formed by the air nozzles 10 are formed on both open sides of the hand insertion section 3, the moisture blown out from the hand comes close to the open sections on both sides of the hand insertion section 3 and the surface thereof. Therefore, the wall surface 17 of the corner portion is not sprayed, and the wall surface 17 is prevented from being damaged by water drops or the like. The water thus blown off is pushed to the bottom of the back side of the hand insertion part 3 by both its own weight and the force of the working air flow, flows down into the drain pipe 7 from the drain port formed in this part, and from the inside of the hand insertion part 3. The water is drained smoothly. The water flowing down through each drain pipe 7 is received in the drain tank 6 provided in the lower portion of the main body 1. Thus, a wet hand will dry in a short time. After that, when the hand inserted into the hand insertion portion 3 is removed from the hand insertion portion 3, the absence of the hand is detected, the high-pressure airflow generator 2 is stopped after a certain period of operation, and a quick and hygienic hand drying process is performed. Is completed. That is, according to this hand dryer, the hands can be hygienically dried easily and easily without any trouble, trouble, discomfort or anxiety.

Since the high-pressure airflow generator 2 and the circuit box 13 are installed at a position higher than the hand insertion portion 3 where drainage occurs, these will not get wet with the drain, and the high-pressure airflow generator 2 will not get wet. It is possible to eliminate or simplify waterproof measures for the circuit box 13 and the like. In some cases, it may be more convenient to use the existing drainage equipment provided on the floor of the washroom or the like instead of the drain treatment method of storing the drain in the drain tank 6. In such a case, the drain tank 6 may be cut off at the cutting location 15 with a cutter knife or the like, and the front portion may be hung down in a front hanging state as shown in FIG. As a result, the drain tank 6
Drainage guide 1 with the apex 16 of the cutting point 15 at the front of
8 can be made, and the drain can be made to flow down to the front and drained toward the drainage facility.

In this embodiment, the air flow circulates through the high-pressure air flow generator 2, but a suction port 14 is provided on the back surface of the main body 1, and the suction side of the high-pressure air flow generator 2 is located at this suction port 1.
4 may be connected to inhale air from the back side of the main body 1.

[0025]

As is apparent from the above description of the embodiment, according to the invention of claim 1, the processing is quick and easy to use, and it is compact and can be installed well by using a narrow corner portion such as a washroom. A hand dryer is obtained.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, a high-pressure airflow generator of a predetermined size can be incorporated in the main body of minimum volume, and the whole is more compact. Can be

According to the third aspect of the present invention, in addition to the effect according to the first or second aspect of the present invention, waterproofing measures for the high-pressure airflow generator are almost unnecessary, and the simplification of the structure can be promoted.

According to the invention of claim 4, in addition to the effect according to the invention of claim 1 or 2, the blown-off water can be blown to the outside from the open portions on both sides of the hand insertion portion by the air curtain. This prevents the wall of the corner of the installation site from being soiled.

According to the invention of claim 5, the method of draining the water generated by the drying treatment can be easily changed depending on the installation location, and the adaptability is increased.

[Brief description of drawings]

FIG. 1 is a plan view of an entire hand dryer according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part showing the configuration of the high-pressure airflow generator of the embodiment.

FIG. 3 is a front view of the hand dryer according to the embodiment.

FIG. 4 is a side view of the hand dryer of the embodiment.

FIG. 5 is a perspective view of a drain tank of the hand dryer of the same embodiment.

FIG. 6 is a perspective view showing another usage mode of the drain tank of the hand dryer of the embodiment.

FIG. 7 is a plan view showing the hand dryer of the embodiment in an installed state.

[Explanation of symbols]

 1 Main Body 2 High Pressure Air Flow Generator 3 Hand Insertion Part 4 Surface 5 Surface 6 Drain Tank 8 Air Blow Nozzle 9 Air Blow Nozzle 10 Air Nozzle 11 DC Brushless Motor 12 Turbofan 15 Cutting Point 18 Drain Guide

Claims (5)

[Claims] 1. A main body is composed of two surfaces whose back faces are perpendicular to the front face and whose projection plane shape is a right isosceles triangle or a shape similar to a right isosceles triangle whose chamfered or rounded ridge corner portion. The front of the main body is provided with a concave hand insertion part that is open to the front and both sides and is recessed toward the back, and air blowing nozzles are arranged in the upper and lower sides of the hand insertion part so as to face each other. , To each of these air blowing nozzles,
A hand dryer characterized in that a high-pressure air stream of a high-pressure air stream generator that blows in the air sucked in the main body as a high-pressure air stream is sent. 2. The hand dryer according to claim 1, wherein
The high-pressure airflow generator is composed of a motor and an impeller rotated by the motor, and the rotation surface of the impeller is installed in the main body in parallel with either one of the two surfaces forming the rear surface of the main body. A hand dryer characterized in that 3. The hand dryer according to claim 1 or 2, wherein the high-pressure airflow generator is incorporated in the main body above the hand insertion portion. Hand dryer. 4. The hand dryer according to claim 1 or 2, wherein air is formed on both sides of the hand-inserted portion opened by a high-pressure airflow generator to form an air curtain. A hand dryer which is provided with a nozzle. 5. A front side of the main body is provided with a concave hand insertion portion that is open to the front and both sides and is recessed toward the back, and a high-speed working air flow is generated from air blowing nozzles provided on the upper side and the lower side of the hand insertion portion. A hand configured to blow out the water adhering to the hand inserted in the hand insertion part and drain the blown water from the hand insertion part to a removable drain tank provided below the hand insertion part. It is a drying device, and a cutting point that can be partially cut off is previously formed in a part of the drain tank, and the part formed by cutting off this cutting point becomes a drainage guide that drains water in a predetermined direction. A hand dryer characterized in that