JPH06209879A - Hand drying device - Google Patents

Abstract

PURPOSE:To obtain the hand drying device which can execute easily a quick and sanitary drying processing of hands and can easily be used. CONSTITUTION:In the upper and the lower face parts of a hand inserting part 5 like an open channel of the front side and the side face side formed in front of a box body 6 for forming an outer shell, the upper blowout nozzle 32 and the lower blowout nozzle 33 are provided. To these upper and lower blowout nozzles 32, 33, high pressure air is fed by a high-pressure air generating part 7, and water of hands is blown off to the inner part side of the hand inserting part 5 by a high-speed wind formed in the hand inserting part 5, so that the blown-off water is drained to the outside of the hand inserting part 5 from a drain port 18 provided in the side end on the bottom face of the inner part of the hand inserting part 5. In such a state, water blown off from hands does not remain but is drained smoothly.

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 hygienically drying a wet hand after washing.

[0002]

2. Description of the Related Art In order to maintain a hand in a hygienic state, it is necessary to hygienically perform a hand washing process as well as a post-washing drying process. For this reason, a wet hand is directly dried by washing, for example, A hand dryer as disclosed in JP-A-2-23918 is used.

As shown in FIG. 23, the conventional hand dryer shown in the above publication is composed of an air blower composed of an induction motor 1 and blades 2 rotated by the induction motor 1, and a heating means by an electric heater 3. ing. The blower means forms an air flow blown to the hand drying section 4 by the rotation of the sirocco type blades 2, and the electric heater 3 heats the air flow formed by the blower means to blow the air flow blown to the hand drying section 4 into hot air. And

In the hand dryer having the above-mentioned structure, the hand can be sanitarily dried by holding the wet hand over the hand dryer 4 blowing hot air. That is, the water content of the hand hit by the hot air is evaporated by the heat, blown off by the wind and removed from the hand.

[0005]

In the conventional hand dryer as described above, the temperature of the hot air is set relatively low because the hot air is directly applied to the hand. Therefore, it takes a long time for the drying process and it is troublesome to use.

Further, since the hand drying section 4 is a hot air blowing portion and the surroundings are open, when the hand is extended toward the hand drying section 4, the moisture of the hand evaporated with the hot air is blown toward the user. It may result in discomfort during use.

Although the above-mentioned inconvenience can be solved by providing a barrier in the hand drying section 4 or by enclosing the hand-drying section 4 with a part removed, the usability is deteriorated due to the barrier, and moisture due to a drying process is accumulated in the enclosure. Or new problems arise. In addition, putting a hand, which is a part of the body, in an obstructive part and performing a drying process in a state where it is difficult to see is physiologically uneasy and difficult to use.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a handy and hygienic hand dryer which can carry out a quick drying process easily.

[0009]

A hand dryer according to the present invention blows on the upper and lower surfaces of an open channel-shaped hand insertion portion formed on the front surface of a box forming an outer shell. A high-pressure air generator is used to send high-pressure air to this blow-out nozzle, and the high-speed wind formed inside the hand-insertion section blows moisture from the hand to the back of the hand-insertion section, and the blown-off water is manually inserted. The water is drained to the outside of the hand insertion portion from a drain port provided at the lateral end of the bottom bottom surface of the section.

[0010]

In the hand dryer according to the present invention, by inserting a wet hand into the hand insertion portion, the moisture of the hand is blown away by the high-speed wind formed in the hand insertion portion to the back side of the hand insertion portion, and the hand is moved. It can be dried quickly in a visible state. Moisture blown to the back side of the manual insertion part due to the drying process is pushed to the lateral edge of the back bottom by the air flow in the manual insertion part due to the high-speed wind for the drying process, and does not remain from the drain port on the back bottom. The water will be drained smoothly outside the hand insertion part.

[0011]

【Example】

Example 1. First, a basic configuration of a hand dryer as an embodiment of the present invention will be described with reference to the drawings, and then a detailed configuration will be sequentially described with reference to the drawings.

As shown in FIG. 1 to FIG. 3 in its entirety, this hand dryer is operated by high pressure air generated by a high pressure air generator 7 incorporated in a box body 6 forming an outer shell having a hand insertion portion 5 on the front side. High-speed air is formed as a working air flow for hand drying, which is sent to the insertion portion 5 and blows out moisture in the hand insertion portion 5, and is fixed and installed on the inner wall surface of a hand washing room or the like on the back surface.

The front of the box 6 forming the outer shell of the hand dryer is composed of the front panel 8 and the upper and lower insertion panel 9 forming the manual insertion section 5 as shown in FIG. As shown, the back plate 11 is provided with a structure for mounting it on the wall mounting plate 10. In addition, both side surfaces of the box body 6 have left and right side plates 12
(See FIG. 6), and the upper surface is the upper panel 1 shown in FIG.
3 and the bottom is a gate-shaped frame 14 as shown in FIG.
It is composed by. The upper panel 13 of the box body 6 is configured to be removable, and a display unit 15 for displaying an operation procedure and an abnormality is attached to the front surface portion thereof. An attachment plate 16 is provided inside the upper panel 13 and an electric component 17 such as a reactor for improving the power factor is attached to the attachment plate 16.

The hand insertion portion 5 formed by the upper and lower insertion portion panels 9 is formed in an upper portion of the front surface of the box body 6 in the form of an oblique channel U whose front side and both side surfaces are open and which is inclined downward toward the rear side. It is configured as a letter-shaped recess and has a frontage, height and depth that allow you to freely insert and remove your hands in a visible state without feeling discomfort or anxiety when both hands are naturally aligned and extended. A drainage port 18 is opened at both ends of the side bottom portion, and a square-shaped intake port 19 is opened on the inner surface at a position above the center on the back side where water does not enter. A filter 20 having a mesh structure is detachably attached to the intake port 19,
Foreign matter such as paper and handkerchiefs are prevented from being accidentally inhaled.

The back portion of the hand insertion portion 5 is formed wider than the entrance portion, and projecting portions 21 bulging inward are formed in the shape of a bank at the back side peripheral edges of the open portions on both sides of the hand insertion portion 5. Scattering and wind release to the side are prevented. Further, the opening end edges of the hand insertion portion 5 are all formed in a smooth R shape to improve the touch, and the inner surface of the hand insertion portion 5 is subjected to a water repellent treatment by applying a water repellent paint to prevent the attachment of water droplets. Prevents adhesion of dirt. Further, a windproof protrusion 22 for preventing wind rebound is formed on the upper surface of the inlet of the hand insertion portion 5, and at a position in the back and in the middle of the air inlet 19 where ultraviolet rays are not directly irradiated to the eyes of the user. A germicidal lamp 23 is provided.

A sanitary sheet 24 that can be easily replaced is provided on the back bottom surface of the hand insertion portion 5 and the portion from the entrance portion of the hand insertion portion 5 to the front panel 8 (see FIG. 1).
The sanitary sheet 24 is formed of a non-woven fabric having hydrophilicity and water absorbency, and has been sanitized such as antibacterial treatment.
With this sanitary sheet 24, the entrance portion of the hand insertion portion 5 and the upper portion of the front panel 8 are wet and soiled by water drops dripping from a wet hand before starting the drying processing, and the hand during the drying processing is Water can be prevented from splashing at the bottom of the insertion portion 5 on the back side, and the portion can be always kept clean by replacement.

As shown in FIG. 1, sensors 25 for detecting the entry and exit of the hand into and from the hand insertion section 5 are attached to the entrance side and the back side of the hand insertion section 5 at intervals of about 10 cm to 15 cm. . In this embodiment, the sensor 25 is composed of a plurality of infrared light emitting elements such as photo LEDs arranged side by side and a plurality of infrared light receiving elements such as photo transistors arranged side by side. The light-receiving side is attached to the upper side wall surface that is less affected by external light. The sensor 25 attached to the upper side wall surface on the inlet side is capped with a water avoiding protrusion 26 that also functions as a rib formed laterally on the back surface of the upper insertion portion panel 9, and water from the upper panel 13 side that can be removed is attached. Protected against intrusion. Then, when the infrared rays of the infrared light emitting elements on the entrance side and the back side are both blocked, and the light reception by the infrared light receiving elements is blocked, a hand detection signal is formed, and the control circuit causes the high pressure air generation unit 7
Is operated. Further, when both the infrared rays of the infrared ray emitting elements on the inlet side and the back side are received by the light receiving element, a signal for hand absent detection is formed, and the high pressure air generating section 7 is stopped. It should be noted that, in order to prevent malfunction or misuse due to adhesion of dust to the sensor 25, it is configured to automatically stop by a timer or the like when continuously operated for a certain time or longer.

As shown in FIG. 7, the high pressure air generator 7 has a D
The C brushless motor 27 (which may be a normal commutator motor), a drive circuit 28 (see FIG. 18) for driving the C brushless motor 27, and a turbo fan (not shown) rotated by the DC brushless motor 27 are used. In the example, the two sets are arranged in parallel and the plane portion 2 of the frame 14 of the box body 6 is arranged.
9 is attached so that the intake side faces downward so that intake is possible. The suction side of the high-pressure air generation unit 7 is connected to an intake port 19 formed on the back side of the hand insertion unit 5 via an intake air passage so that the air in the hand insertion unit 5 can be sucked.

As shown in FIG. 7, one end of each of the upper air duct 30 and the lower air duct 31 is connected to the DC brushless motor 27 side, which is the exhaust side of the high-pressure air generator 7. Upper air duct 30 and lower air duct 31
The other end of the nozzle expands into a flat trumpet shape, and an upper blowing nozzle 32 and a lower blowing nozzle 33 are attached to the horizontally long slit-shaped opening ends, respectively. A plurality of nozzle holes 34 are formed in rows in the lateral direction in the upper blowing nozzle 32 and the lower blowing nozzle 33, and the high-pressure air sent from the high-pressure air generating unit 7 has a wind speed of 50 m / s to 150 m / s. Can be blown out after being converted into the wind (see the enlarged sectional view of FIG. 9).

The upper outlet nozzle 32 is inclined downward to the upper portion of the inlet of the manual insertion portion 5, and the lower outlet nozzle 33 is inclined downward to form a pressure gradient from the inlet to the lower portion of the inlet of the manual insertion portion 5. It is attached laterally with a hand, and it is possible to apply wind to both the back side and palm side at the same time so that water drops on the hand can be removed from the front and back of the hand without rubbing the hands put in the hand insertion part 5. it can.

Between the legs 35 on both sides of the gate-shaped frame 14 to which the high-pressure air generator 7 is attached, as shown in FIG. 8, the first air forming a part of the intake air passage is arranged in order from the top. A guide 36, a drain tray 37, a circuit box 39 accommodating the circuit portion 38 of the control circuit, and a drain tank 40 are provided.

The first air guide 36 is attached to the back surface of the flat portion 29 of the frame 14, and the flat portion 29 of the frame 14 forms a ventilation space. Openings 41 are formed on the left and right sides of the flat surface portion 29 of the frame 14, and the intake port 19 of the hand insertion portion 5 and this opening portion 41 are connected by a second air guide 42. That is, the suction side of the high-pressure air generation unit 7 is connected to the intake port 19 of the hand insertion unit 5 by the intake air passage configured by the opening 41 of the frame 14 and the first and second air guides 36 and 42. ing.

The drain tray 37 has a funnel-shaped drain piece 4 attached to the back side of each drain port 18 at both ends of the hand insertion portion 5.
Left and right drain hoses 44 each having one end connected to
The lower end of the is facing the drainage. A drainage connection port is formed at the bottom of the drain tray 37, and this drainage connection port is drainably engaged with a receiving port 45 formed on the upper surface of the drain tank 40. The drainage ports 18 at both ends of the hand insertion portion 5 are used as inlet ends, and the drain tank 40 is configured as an outlet end so that the permissible water flow amount gradually increases toward the outlet end including the connecting portion. Is configured.

In the hand dryer having the basic structure as described above,
By putting a wet hand in the hand insertion part 5, the moisture of the hand is blown away by the high-speed wind formed in the hand insertion part 5 to the back side of the hand insertion part 5, so that the hand can be viewed without anxiety. It can be dried quickly in the state.

That is, when a wet hand is inserted into the hand insertion portion 5 and both the infrared rays of the infrared light emitting elements on the entrance side and the back side are blocked, and the infrared ray receiving elements are prevented from receiving light, a hand detection signal is formed.
The control circuit starts each DC brushless motor 27 of the high-pressure air generator 7, and each turbo fan rotates. By the rotation of each turbo fan, the first and second air guides 3
Intake port 19 through the intake air passage composed of
From this, the air in the hand insertion portion 5 is sucked into the high-pressure air generating portion 7 to form high-pressure air. This high-pressure air is sent from the exhaust side of the high-pressure air generator 7 into the upper air duct 30 and the lower air duct 31, and the upper blow nozzle 32 and the lower blow nozzle 33 of the hand insertion portion 5 are inclined at a predetermined inclination to the back side of the hand and the palm. It is blown as a high-speed wind to both sides at the same time. The high-speed wind blows the water droplets of the hand forward, that is, toward the back side of the hand insertion portion 5.

The water droplets blown off are pushed to the end of the bottom side of the back side of the hand insertion portion 5 by both the own weight and the force of the wind, and the drain hoses 44 are formed from the drainage ports 18 formed in this portion.
And is drained smoothly from the inside of the hand insertion part 5 one by one. The water flowing down through each drain hose 44 is collected in the drain tray 37 and received in the drain tank 40 at the bottom. Generally, the drainage port in an open container is provided at the center of the bottom, and the bottom of the container is provided with a downward slope toward the drainage port, but there is a wind action that counteracts the gravity action. In the interior, the water on the edge side is often difficult or unable to move to the central part where the action of wind is strong, and smooth drainage cannot be expected even if the drain port is provided in the center. However, in this embodiment, since the drain holes 18 are provided at both ends of the bottom portion on the back side, the water to be driven to the end side can be smoothly drained. The drain tank 4
When a large amount of water is accumulated at 0, the drain tank 40 is appropriately extracted from between the leg portions 35 of the frame 14 to the front side, the water is disposed, and then the drain tank 40 is mounted again and used.

On the other hand, the air blown from the upper blowing nozzle 32 and the lower blowing nozzle 33 is sucked into the high-pressure air generating portion 7 again from the intake port 19 on the back side of the manual insertion portion 5 and circulated for the drying process. used. At this time, since the intake port 19 is located at the center on the back side, the pressure near the inlet in the hand insertion portion 5 is reduced, the backflow of the air is stopped, and the wind speeds of the upper blow nozzle 32 and the lower blow nozzle 33 are also weakened. In addition to the above, the left and right balance of the airflow flowing through the hand insertion portion 5 is also improved.

In this way, the wet hand will be dried in about 5 seconds. After that, when the hand inserted into the hand insertion portion 5 is removed from the hand insertion portion 5, the absence of the hand is detected, the high-pressure air generation unit 7 stops after a certain period of operation, and a quick and hygienic hand drying process is performed. Complete. That is, according to this hand dryer,
You can easily and easily dry your hands hygienically without annoyance, trouble, discomfort or anxiety.

The dirt on the surface of the box body 6 and the inner surface of the hand insertion portion 5 can be cleaned by simple wiping, but it is also possible to clean the hand insertion portion 5 with a relatively large amount of water from the usage environment of the device. I'm awake. Even in such a case, the drainage port 18
Since a series of drainage paths with the inlet end as the inlet is configured such that the allowable flow amount of water gradually increases toward the outlet end including the connecting portion, the water is drained smoothly, The occurrence of troubles such as water leakage inside is prevented.

The drainage port 18 of the hand insertion part 5 does not necessarily have to be formed at both ends, but may be provided at only one end, and a gentle downward slope toward the drainage port 18 may be provided on the bottom bottom surface of the hand insertion part 5. It is also possible to improve drainage in the absence of wind by attaching it. In this case, in the case where the drain ports 18 are provided at both ends, the bottom surface on the back side of the hand insertion portion 5 can be formed into a gently inclined structure 46 having a middle height as shown in FIG.

Subsequently, the configuration of each part of the hand dryer of the above embodiment will be sequentially described.

<Description of Heat Dissipation Structure of Circuit Section> FIG. 11
As enlarged and shown in FIG. 3, the portion between the leg portions 35 of the frame 14 in which the circuit box 39 is housed is configured as an air passage continuing in the front-rear direction. That is, an opening 47 is formed at the corresponding position of the back plate 11 to expose the back surface of the circuit box 39, and is formed on the lower surface of the bottom of the first air guide 36 on the front side where the front surface of the circuit box 39 is located. The guide wall 48 faces. The guide wall 48 is formed such that the distance from the front surface of the circuit box 39 is narrow on the lower side of the circuit box 39, and a ventilation hole 49 is formed in the bottom surface of the first air guide 36 at the base thereof. . Therefore,
Due to the operation of the high-pressure air generator 7, an air flow by suction is formed in this portion through the ventilation hole 49. Also, the back plate 1
A thermal barrier 50 is provided at a position substantially corresponding to the flat surface portion 29 of the first frame 14 so as to project to the rear in the full width.

As shown in FIG. 12, the circuit box 39 has a rectangular open container-shaped main body 51 formed as a heat dissipation plate.
A lid 52 for waterproofing is covered, and the circuit portion 38 is housed in the bottom portion of the main body 51. A ventilation window 53 formed by a concave cutout is formed on the upper edge of the front surface of the main body 51, and a gallery-shaped air intake port 54 is formed on the back surface of the lid 52. The lid 52 is constructed so as to cover the main body 51 in an overhang shape for waterproofing.

The thermal barrier 50 divides or blocks the flow of air behind the box 6 in the vertical direction, and is formed by adhesion of urethane foam or the like that is easily brought into close contact with the wall surface of the installation site in the mounted state. Of course, there is no problem in the function even with the rib-shaped protruding structure.

In the heat radiation structure of the circuit portion 38, since the circuit box 39 configured to be able to ventilate is attached to the ventilation path, the heat radiation of the circuit portion 38 is performed very smoothly. That is, the operation of the high-pressure air generator 7 causes the ventilation holes 4
Air is sucked through 9 to form a flow of air as shown by the arrow in FIG. One of the flows of the air enters the circuit box 39 from the air intake 54 of the circuit box 39 that is exposed to the outside behind the box body 6, traverses the inside of the circuit box 39, and extends from the ventilation window 53 to the guide wall 48. Is sucked into the first air guide 36.
The other flow is weak because the intake portion is narrower than the former, but the air on the drain tank 40 side is discharged from the narrow passage 55 between the guide wall 48 and the lower front surface of the circuit box 39. The air flows between the guide wall 48 and the front surface of the circuit box 39 and is sucked into the first air guide 36. The latter air flow is effective for transporting heat on the bottom side surface of the main body 51, which is also a heat dissipation plate of the circuit box 39, and both of the flow passing through the inside and the flow along the surface cause the circuit box 39 to flow. Cooling proceeds very well.

The temperature of the air behind the box body 6 is higher than that of the high-pressure air generator 7 due to the operation of the apparatus. However, any air flow for cooling is generated by the heat provided on the back plate 11. Since the air having good cooling performance is separated from the upper side having a high temperature by the barrier 50, the cooling efficiency of the circuit box 39 is high. In addition, it is necessary to arrange the circuit box 39 in the air circulation path for drying the hand without separately providing a ventilation passage for cooling so as to cool the circuit box 39. Not suitable because the air flow of the product contains water.

<Explanation Regarding Drain Tank> The drain tank 40 is stabilized on the tank receiving portion 56 provided on the leg portion 35 of the frame 14 by the elastic force of the leaf spring 57 attached to the lower surface of the circuit box 39. It is mounted in an inclined state, and can be pulled out or mounted by using a handle portion 58 formed on the bottom side thereof. The tank receiving portion 56 is configured such that its rear end has a gap with the back plate 11, and is devised so as not to serve as a water path to the back plate 11. Since the drain tank 40 is slightly tilted forward, even if the full state is not noticed and water overflows from the receiving port 45 on the upper surface, the water will flow forward and will not wet the wall surface at the mounting position on the rear surface side. In order to prevent water leakage from the upper surface due to full water, a drain hole 59 for preventing overflow is provided at an appropriate place such as one side of the drain tank 40 so that the water level in the tank rises above the drain hole 59 as shown in FIG. Alternatively, the receiving port 45 may be provided in a recess lower than the upper surface of the tank.

In the drain tank 40 in which water is prevented from leaking from the upper surface by the drain hole 59, the drain position and direction can be regulated to some extent by the position of the drain hole 59. Wet water can be prevented. The drain hole 59 is also convenient for completely removing the water in the tank. That is, the receiving port 45 of the drain tank 40 has a structure in which the hole edge is in the shape of a funnel in order to facilitate the receiving of water and to prevent the water inside from easily jumping out even when shaken. It has become. Therefore, the water in the tank 45
When removing from, the funnel-shaped hole edge becomes an obstacle,
Although a small amount of water will inevitably remain, the remaining water can be easily removed by using the drain hole 59 having no obstacle on the inner surface. The drain hole 59 may be provided on the upper surface, the rear surface, or the front surface of the drain tank 40 as long as it is only for removing the remaining water.

<Explanation Regarding Blow-Out Nozzle> Both the upper blow-out nozzle 32 and the lower blow-out nozzle 33 are attached to the manual insertion portion 5, but it is necessary to have an inclination to form a pressure gradient from the inlet to the back, and high pressure is required. In consideration of this and assembling, etc., it is configured as a single body so as to fit into the mounting holes formed in the upper and lower insertion portion panels 9 forming the hand insertion portion 5, and the profile of the inner surface of each insertion portion panel 9 is A surface 60 having nozzle holes 34 to be continuous is provided (see FIG. 9). However, there is a case where the whole of the nozzle holes 34, including the hole edges, is formed on the surface 60 that makes the profile of the inner surface of the insertion portion panel 9 continuous.
In some cases, it may project slightly like a teat. That is, the elements required for the upper and lower blowing nozzles 32 and 33, such as the hole angle of the nozzle hole 34, are configured in a complete manner in which all the elements are satisfied by mounting them in the mounting holes.

With the above structure, the upper and lower insertion portion panels 9
All that is required for the upper and lower blowing nozzles 32 and 33 is to be satisfied only by fitting and mounting them in the mounting holes formed in. In the attached state, the shape is assimilated to the profile of the inner surface of the hand insertion portion 5, so that the touch and appearance are good and dirt is not easily attached.

Further, the upper blowing nozzle 32 is also the lower blowing nozzle 3
3 also has a plurality of nozzle holes 34 arrayed and formed on the surface 60 that connects the profile of the inner surface of the insertion portion panel 9, but at least the central portion of the lower outlet nozzle 33 has both hands aligned in a natural state. Nozzle holes 34 are formed with a pitch 61 corresponding to the gap between the two hands formed when it is pushed out or with a pitch wider than other portions (FIG. 2).
reference).

As a result, a weak wind region is formed in the center of the hand insertion portion 5, and the wind containing water is not blown from the space between both hands inserted in the hand insertion portion 5 to the user's face or the like.
Further, it is possible to form the wind environment in the manual insertion part 5 that also advantageously acts on the drainage from the drainage port 18 described above.

<Explanation Regarding Mounting Structure of Blow-Out Nozzle> As shown in FIG. 7, the upper blow-out nozzle 32 and the lower blow-out nozzle 33 are blown-out sides of the upper air duct 30 and the lower air duct 31 which are expanded into a flat trumpet shape. It is connected and fixed to the end. The upper air duct 30 and the lower air duct 31 are integrally formed with outwardly projecting flanges 62 at the air outlet side ends. On the other hand, the upper blowing nozzle 32 and the lower blowing nozzle 33
Also, a flange 64 that projects radially toward the high-pressure air introduction portion 63 is provided. The connection between the two is as shown in FIG. 1 between the flange 62 on the duct side and the flange 64 on the nozzle side.
The O-ring 65 of the airtight holding member as shown in FIG. 2 is sandwiched, the mounting plate 66 is placed along the back surface of the flange 62 on the duct side, and the flanges 62 and 64 are fastened together by a plurality of screws. There is.

The upper outlet nozzle 32 and the lower outlet nozzle 33 are
The upper air duct 30 and the lower air duct 31 are attached to the hand insertion portion 5 from the back side thereof with attachment screws while being connected to each other. The mounting screws are such that the flanges 62 and 64 are fastened together, and are screwed into the bosses formed on the edge of the mounting hole in the left and right and the upper part. The upper air duct 30 is located below the upper blowing nozzle 32 and the lower blowing nozzle 33.
Since it is hidden behind the lower air duct 31 and the screw tightening operation is difficult, a locking protrusion (provided on the nozzle side or the mounting side) that restricts the movement in the front-back direction and an engaging portion that engages with this. It is fixed by a locking structure (not shown) such as (provided on the nozzle side or the mounting side). With such a structure, the upper blowing nozzle 32 and the lower blowing nozzle 33 can be easily mounted in a stable state by a simple operation even when receiving the action of high-pressure air.

<Explanation Regarding Maintaining Airtightness of Nozzle Mounting Part>
The O-ring 65, which is sandwiched between the nozzle side and the duct side to maintain airtightness, is formed in a substantially toe-shaped cross-sectional shape as shown in FIG. 14 in a free state. That is, a series of ridges or rib-like or lip-like highly airtight holding structures 67 having weak compressive strength are integrally formed at the ends of the opposing surfaces receiving a compressive load. In the illustrated example, the highly airtight holding structures 67 are arranged in a zigzag manner on the opposing surfaces, but there is no functional problem if they are provided only on the contact surface 68 that contacts the flange 62 on the duct side.

When the O-ring 65 is sandwiched between the flange 62 on the duct side and the flange 64 on the nozzle side and compressed by screwing, the O-ring 65 changes from the free state shape shown by the broken line in FIG. 15 to the solid line in FIG. The shape changes to the functional state shown in. That is, the high airtightness holding structures 67 on both sides are crushed by compression, and the volume R is continuous with the flange 62 on the duct side.
Shaped portion 69 and cylindrical high pressure air introduction portion 63 on the nozzle side
It bites so as to escape into the gap formed between and, and closes the part in a highly airtight state. Therefore, the airtightness of the high-pressure air sent from the high-pressure air generator 7 can be reliably and firmly maintained for a long period of time.

<Explanation Regarding the Structure of the Intake Portion of the Hand Insertion Portion> A mesh-structured filter 20 is removably attached to the intake port 19 so that foreign matter such as paper or a handkerchief is not accidentally sucked in. As described above, in this embodiment, as shown in FIG.
Furthermore, a structure for preventing another foreign substance from entering the inside is provided. That is, a grid 70 (which may be a vertical grid, a horizontal grid, or a square grid) that does not obstruct ventilation is provided in the back of the filter 20 having a mesh structure. This grid 70
Is the intake port 1 of the second air guide 42 in this embodiment.
Although it is formed integrally with the opening end of the connection with 9, it may be formed as a separate component and mounted, or may be provided integrally or separately with the intake port 19 of the hand insertion portion 5.

With the above-described lattice 70, even if an object is accidentally dropped into the hand insertion portion 5 with the filter 20 removed for cleaning or the like, it is obstructed by the lattice 70 and is sucked from the intake port 19. Since it does not get inside, it is possible to prevent troubles due to foreign matter entering as much as possible.

<Description of Configuration Regarding Sound Insulation> In the hand dryer of this embodiment, each DC brushless motor 27 of the high-pressure air generator 7 is covered with a sound absorbing material, and the inner surface of the front panel 8 is covered with the sound absorbing material. Sound insulation measures have been taken. What is described here is a configuration that shuts off the sound when air is sucked from the first air guide 36 into the high-pressure air generation unit 7. That is, as shown in FIG. 8, a semi-cylindrical or horseshoe-shaped sound insulation wall 72 having a curved surface 71 on the inflow side of the air from the second air guide 42 is provided at the bottom of the first air guide 36. The upper end surface of the sound insulation wall 72 is configured to abut the rim of the suction portion of the high-pressure air generating portion 7. The air itself is sucked through the open portion 73 of the sound insulation wall 72. In this embodiment, two sound insulation walls 72 formed of a sound absorbing material are fixed to the bottom of the first air guide 36 as shown in the figure, but the bottom of the first air guide 36 is formed. You may form integrally.

The sound-insulating wall 72 having the above structure smoothes the suction flow from the first air guide 36 to the high-pressure air generating portion 7 due to its shape, so that the sound when the air is sucked is reduced and at the time of suction, Since the sound of is also shielded, the sound leaking from the intake port 19 of the hand insertion portion 5 is reduced, and the cleanliness during driving can be improved.

<Explanation Regarding Wall Mounting Structure> The hand dryer of this embodiment is fixed and installed on the inner wall surface of a hand washing room or the like on the back surface, and the wall dryer is mounted on the wall surface as shown in FIG. It is performed using the wall mounting plate 10. The wall mounting plate 10 has a width substantially equal to that of the back plate 11 of the box body 6, is configured as a plate having a vertical dimension slightly shorter than the back plate 11, and is fixed to the wall surface by several screws. On the left and right of the upper part of the wall mounting plate 10, upward hooks 74 are cut and raised on the side opposite to the wall contact surface. Further, screw fixing portions 75 are formed in the center of the lower portion and the center of the upper end portion, respectively. Further, stable side edge portions 76 having a protrusion amount substantially equal to the hook 74 are provided on both side edges of the wall mounting plate 10.
Are formed continuously or discontinuously. The rear plate 11 of the box 6 has mounting holes 7 that engage with the hooks 74.
7, and a screw fixing part 7 between the upper center and the center near the lower part.
5 is provided with a screw mounting portion 78.

The box body 6 is hooked on the wall mounting plate 10 and fixed with screws. At this time, the stable edge portions 76 on both sides of the wall mounting plate 10 come into contact with the back plate 11 of the box body 6, so that the horizontal swing of the box body 6 is restricted and the box body 6 is mounted in a stable state. . Stable margin 7
6 also functions as a rib that enhances the rigidity of the wall mounting plate 10 itself. It should be noted that mounting the box body 6 slightly tilted forward is effective in preventing water leakage to the back side of the drain tank 40 described above.

<Explanation on Sensitivity Adjustment of Sensor> Each of the entrance and rear sensors 25 for detecting the entry and exit of the hand into and out of the hand insertion portion 5 by infrared rays emits light due to a difference in the light environment of the place of use and a temporal factor. The desired detection accuracy may not be maintained due to changes in strength. Therefore, the hand dryer of this embodiment is provided with the sensor sensitivity automatic correction device as shown in FIG. This sensor sensitivity automatic correction device
It is composed of a microcomputer 79 and a correction circuit 80. The correction circuit 80 is connected to infrared light receiving elements such as a plurality of phototransistors, and has resistors 81, 8
2, 83, 84 and a transistor 85. The bases of the transistors 85 of the correction circuit 80 are the output ports D5 and D6 of the microcomputer 79, respectively.
And is turned on / off by switching Hi / Low of the output ports D5 and D6. The outputs of the infrared light receiving elements such as a plurality of phototransistors in each sensor 25 are all AD-converted to obtain the microcomputer 79.
Entered in.

The correction of the sensor sensitivity is carried out by the program of the microcomputer 79. FIG. 17 is a flowchart showing the program. That is, when the power is turned on or at regular intervals, first in step 1, the infrared light emitting element such as the photo LED of the sensor 25 is turned on, and in step 2, the output of the infrared light receiving element of the sensor 25 at that time is AD.
It is input, and in step 3, the AD input value is stored in the memory. The detection of the output level of the sensor 25 is repeated eight times in this embodiment so that a noise error does not occur.
All output levels for each time are stored in memory. In step 4, it is judged whether or not the number of times is completed,
If it is not completed, the process returns to step 1, and if it is completed, the process proceeds to step 5.

From step 5 to step 8, the same operation as that from step 1 to step 4 is performed for the sensor 25 of another stage (for example, disposed on the back side).
When the detection of the output levels of the sensors 25 on the inlet side and the rear side is completed, the process proceeds to step 9. In step 9, the average value of each output level is calculated eight times, and the threshold value is set. At this time, the upper and lower limits are set for the threshold in order to avoid malfunctioning for 30 seconds continuously in a state of abnormal sensitivity, and even when the upper limit is exceeded, the threshold is set to the upper limit. If the value falls below the lower limit value, the threshold value is processed as the lower limit value. In step 10, it is determined whether the threshold value in step 9 is larger than the lower limit value. If the threshold value is larger than the lower limit value in step 10, the program of the correction operation is ended. If the threshold value is smaller than the lower limit value, the process proceeds to step 11. Step 1
1, the output ports D5, D of the microcomputer 79
6 (the sensor on the inlet side and the sensor on the rear side are set individually and independently) is switched from the Hi level to the Low level, and the process returns to step 1.

As a result, the transistor 85 is turned on,
The current to the infrared light receiving element concerned is increased and the input sensitivity is lowered. That is, the sensitivity adjustment of the sensor 25 according to the situation is automatically performed when the power is turned on or at regular intervals, and the malfunction due to the malfunction of the sensor 25 is avoided.

<Explanation Regarding Insulation for Preventing Electric Leakage> In the hand dryer of this embodiment, as described above, the high-pressure air generator 7 exists in the flow path of air containing water. Each DC brushless motor 27 of the high-pressure air generator 7 is driven by a drive circuit 28 controlled by an inverter, but it is possible that the DC brushless motor 27 sucks in water contained in the air flow. The DC brushless motor 27 has a built-in magnetic pole position detection circuit 87 that uses a Hall element 86 that detects the magnetic pole position of the rotor in order to determine the phase in which the motor winding is energized. Due to the structure of the Hall element 86, the detection portion is exposed, so that the moisture contained in the air flow is generated by the DC brushless motor 27.
If it gets inside, electrical insulation may not be maintained between the magnetic pole position detection circuit 87 and the stator core, between the stator core and the motor frame, and electric leakage may occur.

Therefore, in the hand dryer of this embodiment, the drive circuit 28 having the structure shown in FIG. 18 is formed. That is, the power is supplied to the Hall element 86 via the insulating transformer 88, and the output of the magnetic pole position detection circuit 87 is sent to the motor control circuit 90 via the photocoupler 89. The magnetic pole position detection circuit 87 side and the power supply / motor control circuit 90 side are insulated, so that even if moisture enters the DC brushless motor 27, leakage from the hall element 86 is avoided and the function is stable. Also, the safety is improved.

<Explanation Regarding Configuration of Abnormality Display> The hand dryer of this embodiment is provided with an abnormality display device for displaying an abnormality of each part on the display part 15 of the upper panel 13. This abnormality display device, as shown in FIG. 19, includes a control circuit 91 and a plurality of abnormality detecting means 92, 93, 9 arranged in the main part.
4, 95 and display means 96. For example, the abnormality information of the internal temperature of the high-pressure air generator 7, the abnormality information of the current of each DC brushless motor 27, the abnormality information of the water level of the drain tank 40, the abnormality information of the duct, etc. are respectively detected by the abnormality detecting means 92, 93, 94, 95. Each is detected and input to the control circuit 91. The display unit 96 includes a plurality of display elements (for example, LEDs),
The control circuit 91 operates so that the content of the abnormality can be specified. As a result, the content of the abnormality can be specified and the abnormality can be dealt with quickly. In this embodiment, FIG.
The display element 0 for displaying the operation guidance is used as it is. That is, by turning off one of the plurality of display elements arranged in a line and causing the other display elements to blink,
The multiple display patterns 97 as shown in FIG. 4 are configured, and the abnormality content is associated with each display pattern 97, so that the abnormality content can be specified.

Example 2. 22 is a schematic vertical sectional side view showing the main part of the construction of a hand dryer according to another embodiment of the present invention. In addition, the same or corresponding components as those of the hand dryer according to the first embodiment are designated by the same reference numerals in the drawings, and the description thereof will be omitted.

In the hand dryer of this embodiment, the back side of the hand insertion portion 5 is extended from that of the first embodiment, the extension portion is configured as an open container 98, and the drain portion 99 is provided at the bottom portion. The hand insertion portion 5 is provided with a cleaning liquid pouring port 100 with a valve for supplying the cleaning liquid. The cleaning liquid may be water, warm water, or disinfectant.

The hand dryer of this embodiment can perform hand washing and hand drying at the same time, and is used as a hand dryer in places where high hygiene and cleanliness are required. be able to. Note that this hand dryer may be configured as a build-in type incorporated in a building because it has a drainage system, a water supply system, and the like.

[0063]

As is apparent from the above description of the embodiments, the hand dryer of the present invention is capable of performing a quick and sanitary drying process for wet hands and is easy to use. In particular, since the water removed from the hands by the drying process is smoothly drained without being stagnant, it becomes hygienic and excellent in usability.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an entire hand dryer according to an embodiment of the present invention.

FIG. 2 is a plan view showing an entire hand dryer according to an embodiment of the present invention.

FIG. 3 is a rear view showing the entire hand dryer according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view showing an enlarged part of the configuration of the box body of the hand dryer according to the embodiment of the present invention.

FIG. 5 is an exploded perspective view showing an enlarged part of the configuration of the box body of the hand dryer according to the embodiment of the present invention.

FIG. 6 is an enlarged perspective view showing one of the side plates of the box body of the hand dryer according to the embodiment of the present invention.

FIG. 7 is an exploded perspective view showing an enlarged configuration of a high pressure air generating portion of a hand dryer according to an embodiment of the present invention.

FIG. 8 is an exploded perspective view showing an enlarged configuration of a frame portion of the hand dryer according to the embodiment of the present invention.

FIG. 9 is a cross-sectional view showing, in an enlarged manner, a mounting portion of a lower blowing nozzle of a hand dryer according to an embodiment of the present invention.

FIG. 10 is a schematic partial perspective view showing another embodiment of the hand insertion portion of the hand dryer according to the embodiment of the present invention.

FIG. 11 is an enlarged vertical sectional view showing the configuration of the lower portion of the box body of the hand dryer according to the embodiment of the present invention.

FIG. 12 is an exploded perspective view showing the configuration of the circuit box of the hand dryer according to the embodiment of the present invention.

FIG. 13 is an enlarged plan view of the O-ring of the hand dryer according to the embodiment of the present invention.

14 is an enlarged cross-sectional view taken along the line AA in FIG.

FIG. 15: O in a hand dryer according to an embodiment of the present invention
It is an expanded sectional view which shows the function of a ring.

FIG. 16 is a circuit diagram of a sensor sensitivity automatic correction device for a hand dryer according to an embodiment of the present invention.

FIG. 17 is a flowchart showing the operation of the sensor sensitivity automatic correction device of the hand dryer according to the embodiment of the present invention.

FIG. 18 is a circuit configuration diagram showing a configuration of a motor drive circuit of a hand dryer according to an embodiment of the present invention.

FIG. 19 is a circuit configuration diagram of an abnormality display device of a hand dryer according to an embodiment of the present invention.

FIG. 20 is a front view of the display unit of the hand dryer according to the embodiment of the present invention.

FIG. 21 is an explanatory view showing an abnormal display pattern of the hand dryer according to the embodiment of the present invention.

FIG. 22 is a cross-sectional view showing a hand dryer as another embodiment of the present invention.

FIG. 23 is a cross-sectional view showing the configuration of a conventional hand dryer.

[Explanation of symbols]

 5 Hand insertion part 6 Box body 7 High pressure air generation part 18 Drainage port 32 Upper outlet nozzle 33 Lower outlet nozzle 40 Drain tank 44 Drain hose

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[Procedure amendment]

[Submission date] February 28, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Hand dryer

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand dryer for hygienically drying a wet hand after washing.

[0002]

2. Description of the Related Art In order to maintain a hand in a hygienic state, it is necessary to hygienically perform a hand washing process as well as a post-washing drying process. For this reason, a wet hand is directly dried by washing, for example, A hand dryer as disclosed in JP-A-2-23918 is used.

As shown in FIG. 23, the conventional hand dryer shown in the above publication is composed of an air blower composed of an induction motor 1 and blades 2 rotated by the induction motor 1, and a heating means by an electric heater 3. ing. The blower means forms an air flow blown to the hand drying section 4 by the rotation of the sirocco type blades 2, and the electric heater 3 heats the air flow formed by the blower means to blow the air flow blown to the hand drying section 4 into hot air. And

In the hand dryer having the above-mentioned structure, the hand can be sanitarily dried by holding the wet hand over the hand dryer 4 blowing hot air. That is, the water content of the hand hit by the hot air is evaporated by the heat, blown off by the wind and removed from the hand.

[0005]

In the conventional hand dryer as described above, the temperature of the hot air is set relatively low because the hot air is directly applied to the hand. Therefore, it takes a long time for the drying process and it is troublesome to use.

Further, since the hand drying section 4 is a hot air blowing portion and the surroundings are open, when the hand is extended toward the hand drying section 4, the moisture of the hand evaporated with the hot air is blown toward the user. It may result in discomfort during use.

Although the above-mentioned inconvenience can be solved by providing a barrier in the hand drying section 4 or by enclosing the hand-drying section 4 with a part removed, the usability is deteriorated due to the barrier, and moisture due to a drying process is accumulated in the enclosure. Or new problems arise. In addition, putting a hand, which is a part of the body, in an obstructive part and performing a drying process in a state where it is difficult to see is physiologically uneasy and difficult to use.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a sanitary hand dryer which is easy to use and can be quickly dried.
In addition, its drainage performance, maintainability, and functional safety are improved.
By achieving qualitative improvement, reliability improvement, and noise reduction
is there.

[0009]

[Means for Solving the Problems] To achieve the above object
Hand drying apparatus, upper and lower two faces of the open hand insertion portion of the front side and the side surface which is formed into a box body forming an outer shell according to claim 1, the
Each is equipped with a blowing nozzle, high-pressure air is sent to this blowing nozzle by the high-pressure air generation unit, and the high-speed wind formed inside the hand insertion portion blows away the water content of the hand to the back side of the hand insertion portion, and blows out the blown water. The water is drained to the outside of the hand insertion portion from a drain port provided at the lateral end of the bottom surface of the hand insertion portion.

According to claim 2 in order to achieve the above-mentioned purpose
The hand dryer is a front side and a side formed on the outer shell.
On the upper and lower sides of the open hand insertion part on each side.
Is installed, and the high-pressure air generation unit
By sending compressed air, the high-speed wind formed inside the manual insertion section
If you try to blow the water from your hand to the back of the hand insertion part,
The suction side of the high-pressure air generator is located at the center of the back side of the manual insertion section.
Suction port that opens at the top and has a removable filter
I contacted him.

In order to achieve the above object, a third aspect of the present invention is provided.
The hand dryer is a filter in the means according to claim 2.
There is a grid inside the back to prevent foreign matter from entering.
It

According to a fourth aspect of the present invention, there is provided the above object.
The hand dryer is a front side and a side formed on the outer shell.
On the upper and lower sides of the open hand insertion part on each side.
Is installed, and the high-pressure air generation unit
By sending compressed air, the high-speed wind formed inside the manual insertion section
If you try to blow the water from your hand to the back of the hand insertion part,
The front part of the box that continues from the entrance of the hand insertion part
The sheet-like member that absorbs water can be replaced
I wore it.

According to a fifth aspect of the present invention, the object is achieved.
The hand dryer is a drainage port in the means according to claim 1.
In addition, the drain that collects the water flowing down from this drain port in one place
Drain container and the drain container formed at the bottom of this drain container.
A series of drainage paths including a connection port facing the
Then, as you move this drainage route from the inlet end to the outlet end
It is constructed to gradually increase the water flow capacity.
Is.

According to claim 6 to achieve the above object
The hand dryer is a front side and a side formed on the outer shell.
On the upper and lower sides of the open hand insertion part on each side.
Is installed, and the high-pressure air generation unit
By sending compressed air, the high-speed wind formed inside the manual insertion section
Blows away moisture from the hand to the back of the hand insertion part
Drain the water from the drainage port provided on the bottom of the hand insertion part to the outside of the hand insertion part.
Drainage to the
It is distributed.

In order to achieve the above object, according to claim 7,
The hand dryer is a front side and a side formed on the outer shell.
On the upper and lower sides of the open hand insertion part on each side.
Is installed, and the high-pressure air generation unit
By sending compressed air, the high-speed wind formed inside the manual insertion section
If you try to blow the water from your hand to the back of the hand insertion part,
In addition, the circuit that drives the high-pressure air generator is installed outside the box.
Has one end open and the other end connects to the suction side of the high-pressure air generator.
It is arranged in the ventilation passage.

According to claim 8 to achieve the above object
The hand dryer is a front side and a side formed on the outer shell.
On the upper and lower sides of the open hand insertion part on each side.
Is installed, and the high-pressure air generation unit
By sending compressed air, the high-speed wind formed inside the manual insertion section
If you try to blow the water from your hand to the back of the hand insertion part,
Also, the blown water is removable from the hand insertion part.
Drainage into the same tank from the upper receptacle of the tank.
However, this tank has a drainage hole on top of the
It is provided in the vicinity.

According to a ninth aspect of the present invention, the object is achieved.
The hand dryer is a front side and a side formed on the outer shell.
On the upper and lower sides of the open hand insertion part on each side.
Is installed, and the high-pressure air generation unit
By sending compressed air, the high-speed wind formed inside the manual insertion section
If you try to blow the water from your hand to the back of the hand insertion part,
At the center of the nozzle hole where the blowout nozzle is arranged
The pitch is wider than the other parts.

In order to achieve the above object, the invention according to claim 10 is as follows.
The hand dryer is a front side and side formed in a box forming an outer shell.
The upper and lower sides of the open hand insertion part on the front side
The sluice is installed, and the high pressure air generator
By sending high pressure air, the high-speed wind formed in the hand insertion part
If you try to blow the moisture of your hand to the back of the hand insertion part,
In both cases, the high pressure air generator and the blowout nozzle are
To connect the blowout nozzle to the air duct.
Is a highly airtight seal with weak compressive strength at the end of the surface that receives the compressive load.
An airtight holding member having a holding structure is sandwiched.

In order to achieve the above-mentioned object, the invention according to claim 11
The hand dryer is a front side and side formed in a box forming an outer shell.
The upper and lower sides of the open hand insertion part on the front side
The sluice is installed, and the high pressure air generator
By sending high pressure air, the high-speed wind formed in the hand insertion part
If you try to blow the moisture of your hand to the back of the hand insertion part,
In both cases, the suction part of the high-pressure air generation part is configured downward,
Surrounding the suction part with a sound insulation wall for almost half a round
Is.

In order to achieve the above object, the invention according to claim 12 is
The hand dryer is a front side and side formed in a box forming an outer shell.
The upper and lower sides of the open hand insertion part on the front side
The sluice is installed, and the high pressure air generator
By sending high pressure air, the high-speed wind formed in the hand insertion part
If you try to blow the moisture of your hand to the back of the hand insertion part,
Both detect the entry and exit of the hand into the hand insertion part, and
Infrared sensor that outputs a signal to control the living part
The output of this sensor should be
A sensor that detects at regular intervals and adjusts the input sensitivity to the sensor.
The automatic sensitivity correction device is provided.

[0021] In order to achieve the above object
The hand dryer is a front side and side formed in a box forming an outer shell.
The upper and lower sides of the open hand insertion part on the front side
The sluice is installed, and the high pressure air generator
By sending high pressure air, the high-speed wind formed in the hand insertion part
If you try to blow the moisture of your hand to the back of the hand insertion part,
In both cases, the magnet in the brushless motor of the high-pressure air generator is
Motor for driving pole position detection circuit and brushless motor
It is electrically insulated from the control circuit.

In order to achieve the above object
The hand dryer is a front side and side formed in a box forming an outer shell.
The upper and lower sides of the open hand insertion part on the front side
The sluice is installed, and the high pressure air generator
By sending high pressure air, the high-speed wind formed in the hand insertion part
If you try to blow the moisture of your hand to the back of the hand insertion part,
In addition, to display the operation of the device on the surface of the box
The display means are arranged in rows and the points of each display means are
Anomaly content is indicated by the pattern of combination of lights and extinguishing lights
The abnormality display device is provided.

[0023]

In the above-mentioned means according to claim 1, by inserting a wet hand into the hand insertion portion, the moisture of the hand is blown off to the back side of the hand insertion portion by the high-speed wind formed in the hand insertion portion. Can be rapidly dried in a visible state. Moisture blown to the back side of the manual insertion part due to the drying process is pushed to the lateral edge of the back bottom by the air flow in the manual insertion part due to the high-speed wind for the drying process, and does not remain from the drain port on the back bottom. The water will be drained smoothly outside the hand insertion part.

In the means according to claim 2, the hand is
Insert the wet hand into the insertion section to
Blow toward the back side of the hand insertion part by the high-speed wind formed inside the insertion part.
Blow off and dry quickly with your hands visible.
The wind that has been subjected to the hand drying process is not absorbed by the hand insertion part.
Suction into the high pressure air generator from the inlet through the filter.
Then, it is blown again to the hand insertion part and circulates.

In the means according to claim 3, the contract
With the action related to the quadrature 2, with the filter removed
Since there will be a lattice at the suction port,
It is difficult for foreign matter to enter the back.

In the means according to claim 4, the hand
Insert the wet hand into the insertion section to
Blow toward the back side of the hand insertion part by the high-speed wind formed inside the insertion part.
Blow off and dry quickly with your hands visible.
And can be dripped from wet hands before starting the drying process.
Water can be absorbed by a sheet-shaped member that can replace water drops.
Therefore, the part can be kept clean.

In the above-mentioned means according to claim 5, the contract
Along with the action related to Requirement 1, is the water in the hand insertion part drained?
Is collected in the drainage route, flows down, and is drained to the drain tank.
Will be done. At this time, the drainage route is a license to distribute the water.
Since the capacity gradually increases toward the outlet end, drainage is always
Will be carried out smoothly.

In the means according to claim 6, the hand is
Insert the wet hand into the insertion section to
Blow toward the back side of the hand insertion part by the high-speed wind formed inside the insertion part.
Blow off and dry quickly with your hands visible.
You can Blows away to the back of the hand insertion part due to the drying process
The water content in the manual insertion section is high due to the high-speed wind for the drying process.
The air flow of the
Will be drained to. And the high-speed wind is the hand insertion part.
Water is present in the hand insertion part even when it is not working on
And the water will be drained to the drain.

In the above-mentioned means according to claim 7, the hand is
Insert the wet hand into the insertion section to
Blow toward the back side of the hand insertion part by the high-speed wind formed inside the insertion part.
Blow off and dry quickly with your hands visible.
You can At this time, the high-pressure air generator creates
Also, outside air is attracted and flows, cooling the circuit part in the ventilation passage.
However, it will be sucked into the suction side of the high-pressure air generator.
It

In the above-mentioned means according to claim 8, the hand
Insert the wet hand into the insertion section to
Blow toward the back side of the hand insertion part by the high-speed wind formed inside the insertion part.
Blow off and dry quickly with your hands visible.
You can At this time, the water blown off the hand insertion part
It will be drained into the tank from the tank inlet. Tan
Remove water from the tank using the receiving port and drain hole
be able to.

In the means according to claim 9, the hand is
Insert the wet hand into the insertion section to
Blow toward the back side of the hand insertion part by the high-speed wind formed inside the insertion part.
Blow off and dry quickly with your hands visible.
You can At this time, blow out from the blow-out nozzle into the hand insertion part.
The high-speed wind generated creates a weak area in the center.
Becomes

In the above-mentioned means according to claim 10,
Remove water from your hand by inserting a wet hand into the hand insertion area.
Due to the high-speed wind formed inside the insertion part
Blow off and dry quickly with visible hands
be able to. At this time, the high pressure air from the high pressure air generation unit
Air is sent from the air duct to the blowing nozzle, and the blowing nozzle
Is blown out as high-speed wind from the
-The gap between the duct and the connection is the compressive strength of the airtight holding member.
Highly airtight state due to blockage due to deformation of highly airtight holding structure with weak
Since it is held at, the air leakage at this part is eliminated.

In the above-mentioned means according to claim 11,
Remove water from your hand by inserting a wet hand into the hand insertion area.
Due to the high-speed wind formed inside the insertion part
Blow off and dry quickly with visible hands
be able to. At this time, the high-pressure air is sucked into
Air is guided to the suction side by the sound insulation wall and flows smoothly.
The sound generated by the suction will be blocked.
It

In the above-mentioned means according to claim 12,
The sensor detects the hand by inserting a wet hand into the hand insertion section.
The moisture of the hand by the high-speed wind formed in the hand insertion part.
Blow away to the back of the hand insertion part and keep your hands visible.
It can be dried quickly. The hand detection
The sensor automatically compensates its sensitivity with the sensor sensitivity automatic correction device.
Since it is corrected, the entry and exit of the hand should always be detected accurately.
become.

In the above-mentioned means according to claim 13,
The sensor detects the hand by inserting a wet hand into the hand insertion section.
The moisture of the hand by the high-speed wind formed in the hand insertion part.
Blow away to the back of the hand insertion part and keep your hands visible.
It can be dried quickly. And somehow
Even if water gets into the high pressure air generating part for
Magnetic pole position detection circuit in brushless motor and brushless
It is electrically isolated from the motor control circuit that drives the motor.
Therefore, leakage from the magnetic pole position detection circuit is prevented.
Becomes

In the above-mentioned means according to claim 14,
The sensor detects the hand by inserting a wet hand into the hand insertion section.
The moisture of the hand by the high-speed wind formed in the hand insertion part.
Blow away to the back of the hand insertion part and keep your hands visible.
It can be dried quickly. And operation of the device
Multiple guides with a common guide display and abnormal content display
It will be carried out by steps.

[0037]

EXAMPLES Example 1. First, a basic configuration of a hand dryer as an embodiment of the present invention will be described with reference to the drawings, and then a detailed configuration will be sequentially described with reference to the drawings.

As shown in FIG. 1 to FIG. 3 in its entirety, this hand dryer is operated by high pressure air generated by a high pressure air generator 7 incorporated in a box 6 forming an outer shell having a hand insertion portion 5 on the front side. It is sent to the insertion part 5 and the moisture of the hand is blown into the hand insertion part 5.
It forms a high-speed wind to blow off , and is fixed and installed at the back on the inner wall surface of a hand-washing room.

The front of the box 6 forming the outer shell of the hand dryer is composed of the front panel 8 and the upper and lower insert panel 9 forming the manual insert 5, as shown in FIG. As shown, the back plate 11 is provided with a structure for mounting it on the wall mounting plate 10. In addition, both side surfaces of the box body 6 have left and right side plates 12
(See FIG. 6), and the upper surface is the upper panel 1 shown in FIG.
3 and the bottom is a gate-shaped frame 14 as shown in FIG.
It is composed by. The upper panel 13 of the box body 6 is configured to be removable, and a display unit 15 for displaying an operation procedure and an abnormality is attached to the front surface portion thereof. An attachment plate 16 is provided inside the upper panel 13 and an electric component 17 such as a reactor for improving the power factor is attached to the attachment plate 16.

The hand insertion portion 5 formed by the upper and lower insertion portion panels 9 is formed in an upper portion of the front surface of the box body 6 in the form of an oblique channel U whose front side and both side surfaces are open and which inclines downward toward the rear side. It is configured as a letter-shaped recess and has a frontage, height and depth that allow you to freely insert and remove your hands in a visible state without feeling discomfort or anxiety when both hands are naturally aligned and extended. A drainage port 18 is opened at both ends of the side bottom portion, and a square-shaped intake port 19 is opened on the inner surface at a position above the center on the back side where water does not enter. A filter 20 having a mesh structure is detachably attached to the intake port 19,
Foreign matter such as paper and handkerchiefs are prevented from being accidentally inhaled.

The inner part of the hand insertion part 5 is wider than the inlet part, and the projecting parts 21 bulging inward are formed in a bank shape at the inner peripheral edges of the open parts on both sides of the hand insertion part 5. Scattering and wind release to the side are prevented. Further, the opening end edges of the hand insertion portion 5 are all formed in a smooth R shape to improve the touch, and the inner surface of the hand insertion portion 5 is subjected to a water repellent treatment by applying a water repellent paint to prevent the attachment of water droplets. Prevents adhesion of dirt. Further, a windproof protrusion 22 for preventing wind rebound is formed on the upper surface of the inlet of the hand insertion portion 5, and at a position in the back and in the middle of the air inlet 19 where ultraviolet rays are not directly irradiated to the eyes of the user. A germicidal lamp 23 is provided.

Sanitary sheets 24 that can be easily replaced are provided on the bottom surface of the hand insertion portion 5 and the portion from the entrance portion of the hand insertion portion 5 to the front panel 8 (see FIG. 1).
The sanitary sheet 24 is formed of a non-woven fabric having hydrophilicity and water absorbency, and has been sanitized such as antibacterial treatment.
With this sanitary sheet 24, the entrance portion of the hand insertion portion 5 and the upper portion of the front panel 8 are wet and soiled by water drops dripping from a wet hand before starting the drying processing, and the hand during the drying processing is Water can be prevented from splashing at the bottom of the insertion portion 5 on the back side, and the portion can be always kept clean by replacement.

As shown in FIG. 1, sensors 25 for detecting the entrance and exit of the hand into the hand insertion portion 5 are attached to the entrance side and the back side of the hand insertion portion 5 at intervals of about 10 cm to 15 cm. . In this embodiment, the sensor 25 is composed of a plurality of infrared light emitting elements such as photo LEDs arranged side by side and a plurality of infrared light receiving elements such as photo transistors arranged side by side. The light-receiving side is attached to the upper side wall surface that is less affected by external light. The sensor 25 attached to the upper side wall surface on the inlet side is capped with a water avoiding protrusion 26 that also functions as a rib formed laterally on the back surface of the upper insertion portion panel 9, and water from the upper panel 13 side that can be removed is attached. Protected against intrusion. Then, when the infrared rays of the infrared light emitting elements on the entrance side and the back side are both blocked, and the light reception by the infrared light receiving elements is blocked, a hand detection signal is formed, and the control circuit causes the high pressure air generation unit 7
Is operated. Further, when both the infrared rays of the infrared ray emitting elements on the inlet side and the back side are received by the light receiving element, a signal for hand absent detection is formed, and the high pressure air generating section 7 is stopped. It should be noted that, in order to prevent malfunction or misuse due to adhesion of dust to the sensor 25, it is configured to automatically stop by a timer or the like when continuously operated for a certain time or longer.

As shown in FIG. 7, the high pressure air generator 7 has a D
The C brushless motor 27 (which may be a normal commutator motor), a drive circuit 28 (see FIG. 18) for driving the C brushless motor 27, and a turbo fan (not shown) rotated by the DC brushless motor 27 are used. In the example, the two sets are arranged in parallel and the plane portion 2 of the frame 14 of the box body 6 is arranged.
9 is attached so that the intake side faces downward so that intake is possible. The suction side of the high-pressure air generation unit 7 is connected to an intake port 19 formed on the back side of the hand insertion unit 5 via an intake air passage so that the air in the hand insertion unit 5 can be sucked.

As shown in FIG. 7, one end of each of the upper air duct 30 and the lower air duct 31 is connected to the DC brushless motor 27 side, which is the exhaust side of the high-pressure air generator 7. Upper air duct 30 and lower air duct 31
The other end of the nozzle expands into a flat trumpet shape, and an upper blowing nozzle 32 and a lower blowing nozzle 33 are attached to the horizontally long slit-shaped opening ends, respectively. A plurality of nozzle holes 34 are formed in rows in the lateral direction in the upper blowing nozzle 32 and the lower blowing nozzle 33, and the high-pressure air sent from the high-pressure air generating unit 7 has a wind speed of 50 m / s to 150 m / s. Can be blown out after being converted into the wind (see the enlarged sectional view of FIG. 9).

The upper blowing nozzle 32 is inclined downward so as to form an upper portion of the inlet of the hand inserting portion 5 and the lower blowing nozzle 33 is upwardly formed at a lower portion of the inlet of the manual inserting portion 5 so as to form a pressure gradient from the inlet to the back. It is attached laterally with a hand, and it is possible to apply wind to both the back side and palm side at the same time so that water drops on the hand can be removed from the front and back of the hand without rubbing the hands put in the hand insertion part 5. it can.

Between the legs 35 on both sides of the gate-shaped frame 14 to which the high-pressure air generator 7 is attached, as shown in FIG. 8, the first air forming part of the intake air passage is arranged in order from the top. A guide 36, a drain tray 37, a circuit box 39 accommodating the circuit portion 38 of the control circuit, and a drain tank 40 are provided.

The first air guide 36 is attached to the back surface of the flat portion 29 of the frame 14, and a ventilation space is formed with the flat portion 29 of the frame 14. Openings 41 are formed on the left and right sides of the flat surface portion 29 of the frame 14, and the intake port 19 of the hand insertion portion 5 and this opening portion 41 are connected by a second air guide 42. That is, the suction side of the high-pressure air generation unit 7 is connected to the intake port 19 of the hand insertion unit 5 by the intake air passage configured by the opening 41 of the frame 14 and the first and second air guides 36 and 42. ing
(See Figure 4) .

The drain tray 37 has a funnel-shaped drain piece 4 attached to the back side of each drain port 18 at both ends of the hand insertion portion 5.
Left and right drain hoses 44 each having one end connected to
The lower end of the is facing the drainage. A drainage connection port is formed at the bottom of the drain tray 37, and this drainage connection port is drainably engaged with a receiving port 45 formed on the upper surface of the drain tank 40. The drainage ports 18 at both ends of the hand insertion portion 5 are used as inlet ends, and the drain tank 40 is configured as an outlet end so that the permissible water flow amount gradually increases toward the outlet end including the connecting portion. Is configured.

In the hand dryer having the basic structure as described above,
By putting a wet hand in the hand insertion part 5, the moisture of the hand is blown away by the high-speed wind formed in the hand insertion part 5 to the back side of the hand insertion part 5, so that the hand can be viewed without anxiety. It can be dried quickly in the state.

That is, when a wet hand is inserted into the hand insertion portion 5 and the infrared rays of the infrared ray emitting elements on the entrance side and the back side are both blocked, and the infrared ray receiving elements are prevented from receiving light, a hand detection signal is formed.
The control circuit starts each DC brushless motor 27 of the high-pressure air generator 7, and each turbo fan rotates. By the rotation of each turbo fan, the first and second air guides 3
Intake port 19 through the intake air passage composed of
From this, the air in the hand insertion portion 5 is sucked into the high-pressure air generating portion 7 to form high-pressure air. This high-pressure air is sent from the exhaust side of the high-pressure air generator 7 into the upper air duct 30 and the lower air duct 31, and the upper blow nozzle 32 and the lower blow nozzle 33 of the hand insertion portion 5 are inclined at a predetermined inclination to the back side of the hand and the palm. It is blown as a high-speed wind to both sides at the same time. The high-speed wind blows the water droplets of the hand forward, that is, toward the back side of the hand insertion portion 5.

The water droplets blown off are pushed to the end of the bottom of the back side of the hand insertion portion 5 by both the self-weight and the force of the wind, and the drain hoses 44 are formed from the drainage ports 18 formed in this portion.
And is drained smoothly from the inside of the hand insertion part 5 one by one. The water flowing down through each drain hose 44 is collected in the drain tray 37 and received in the drain tank 40 at the bottom. Generally, the drainage port in an open container is provided at the center of the bottom, and the bottom of the container is provided with a downward slope toward the drainage port, but there is a wind action that counteracts the gravity action. In the interior, the water on the edge side is often difficult or unable to move to the central part where the action of wind is strong, and smooth drainage cannot be expected even if the drain port is provided in the center. However, in this embodiment, since the drain holes 18 are provided at both ends of the bottom portion on the back side, the water to be driven to the end side can be smoothly drained. The drain tank 4
When a large amount of water is accumulated at 0, the drain tank 40 is appropriately extracted from between the leg portions 35 of the frame 14 to the front side, the water is disposed, and then the drain tank 40 is mounted again and used.

On the other hand, the air blown from the upper blowing nozzle 32 and the lower blowing nozzle 33 is sucked into the high-pressure air generating portion 7 again from the intake port 19 on the back side of the hand inserting portion 5 and circulated for the drying process. used. At this time, since the intake port 19 is located at the center on the back side, the pressure near the inlet in the hand insertion portion 5 is reduced, the backflow of the air is stopped, and the wind speeds of the upper blow nozzle 32 and the lower blow nozzle 33 are also weakened. In addition to the above, the left and right balance of the airflow flowing through the hand insertion portion 5 is also improved.

In this way, the wet hand will be dried in about 5 seconds. After that, when the hand inserted into the hand insertion portion 5 is removed from the hand insertion portion 5, the absence of the hand is detected, the high-pressure air generation unit 7 stops after a certain period of operation, and a quick and hygienic hand drying process is performed. Complete. That is, according to this hand dryer,
You can easily and easily dry your hands hygienically without annoyance, trouble, discomfort or anxiety.

Although the dirt on the surface of the box body 6 and the inner surface of the hand insertion portion 5 can be cleaned by a simple wiping cleaning, it is also possible to clean the hand insertion portion 5 with a relatively large amount of water from the usage environment of the apparatus. I'm awake. Even in such a case, the drainage port 18
Since a series of drainage paths with the inlet end as the inlet is configured such that the allowable flow amount of water gradually increases toward the outlet end including the connecting portion, the water is drained smoothly, The occurrence of troubles such as water leakage inside is prevented.

The drainage port 18 of the hand insertion portion 5 does not necessarily have to be formed at both ends, but may be provided at only one end, and a gentle downward slope toward the drainage port 18 may be provided on the bottom bottom surface of the hand insertion portion 5. It is also possible to improve drainage in the absence of wind by attaching it. In this case, in the case where the drain ports 18 are provided at both ends, the bottom surface on the back side of the hand insertion portion 5 can be formed into a gently inclined structure 46 having a middle height as shown in FIG.

Subsequently, the constitution of each part of the hand dryer of the above-mentioned embodiment will be described successively.

<Description of Heat Dissipation Structure of Circuit Section> FIG. 11
As enlarged and shown in FIG. 3, the portion between the leg portions 35 of the frame 14 in which the circuit box 39 is housed is configured as an air passage continuing in the front-rear direction. That is, an opening 47 is formed at the corresponding position of the back plate 11 to expose the back surface of the circuit box 39, and is formed on the lower surface of the bottom of the first air guide 36 on the front side where the front surface of the circuit box 39 is located. The guide wall 48 faces. The guide wall 48 is formed such that the distance from the front surface of the circuit box 39 is narrow on the lower side of the circuit box 39, and a ventilation hole 49 is formed in the bottom surface of the first air guide 36 at the base thereof. . Therefore,
Due to the operation of the high-pressure air generator 7, an air flow by suction is formed in this portion through the ventilation hole 49. Also, the back plate 1
A thermal barrier 50 is provided at a position substantially corresponding to the flat surface portion 29 of the first frame 14 so as to project to the rear in the full width.

As shown in FIG. 12, the circuit box 39 has a rectangular open container-shaped main body 51 configured as a heat dissipation plate.
A lid 52 for waterproofing is covered, and the circuit portion 38 is housed in the bottom portion of the main body 51. A ventilation window 53 formed by a concave cutout is formed on the upper edge of the front surface of the main body 51, and a gallery-shaped air intake port 54 is formed on the back surface of the lid 52. The lid 52 is constructed so as to cover the main body 51 in an overhang shape for waterproofing.

The heat barrier 50 divides or blocks the flow of air behind the box body 6 in the vertical direction, and is formed by adhesion of urethane foam or the like that is easily brought into close contact with the wall surface of the installation site in the mounted state. Of course, there is no problem in the function even with the rib-shaped protruding structure.

In the heat radiation structure of the circuit portion 38, since the circuit box 39 configured to be able to ventilate is attached to the ventilation passage, the heat radiation of the circuit portion 38 is performed very smoothly. That is, the operation of the high-pressure air generator 7 causes the ventilation holes 4
Air is sucked through 9 to form a flow of air as shown by the arrow in FIG. One of the flows of the air enters the circuit box 39 from the air intake 54 of the circuit box 39 that is exposed to the outside behind the box body 6, traverses the inside of the circuit box 39, and extends from the ventilation window 53 to the guide wall 48. Is sucked into the first air guide 36.
The other flow is weak because the intake portion is narrower than the former, but the air on the drain tank 40 side is discharged from the narrow passage 55 between the guide wall 48 and the lower front surface of the circuit box 39. The air flows between the guide wall 48 and the front surface of the circuit box 39 and is sucked into the first air guide 36. The latter air flow is effective for transporting heat on the bottom side surface of the main body 51, which is also a heat dissipation plate of the circuit box 39, and both of the flow passing through the inside and the flow along the surface cause the circuit box 39 to flow. Cooling proceeds very well.

The temperature of the air behind the box body 6 is higher than that of the high-pressure air generating portion 7 due to the operation of the apparatus, but any air flow for cooling is generated by the heat provided on the back plate 11. Since the air having good cooling performance is separated from the upper side having a high temperature by the barrier 50, the cooling efficiency of the circuit box 39 is high. In addition, it is necessary to arrange the circuit box 39 in the air circulation path for drying the hand without separately providing a ventilation passage for cooling so as to cool the circuit box 39. Not suitable because the air flow of the product contains water.

<Explanation Regarding the Drain Tank> The drain tank 40 is held on the tank receiving portion 56 provided on the leg portion 35 of the frame 14 by the elastic force of the leaf spring 57 attached to the lower surface of the circuit box 39 and is stabilized in front. It is mounted in a tilted state, and can be pulled out or mounted using the handle portion 58 formed on the bottom side thereof (see FIG. 8) . The tank receiving portion 56 is configured such that its rear end has a gap with the back plate 11, and is devised so as not to serve as a water path to the back plate 11. Since the drain tank 40 is slightly tilted forward, even if the full state is not noticed and water overflows from the receiving port 45 on the upper surface, the water will flow forward and will not wet the wall surface at the mounting position on the rear surface side. To prevent water from leaking from the top due to full water,
As shown in FIG. 5, a drain hole 59 for preventing overflow may be provided at an appropriate place such as one side of the drain tank 40 so that the water level in the tank does not rise above the drain hole 59. It may be provided in the lower recess.

In the drain tank 40 in which water is prevented from leaking from the upper surface by the drain hole 59, the drain position and direction can be regulated to some extent by the position of the drain hole 59. Wet water can be prevented. The drain hole 59 is also convenient for completely removing the water in the tank. That is, the receiving port 45 of the drain tank 40 has a structure in which the hole edge is in the shape of a funnel in order to facilitate the receiving of water and to prevent the water inside from easily jumping out even when shaken. It has become. Therefore, the water in the tank 45
When removing from, the funnel-shaped hole edge becomes an obstacle,
Although a small amount of water will inevitably remain, the remaining water can be easily removed by using the drain hole 59 having no obstacle on the inner surface. The drain hole 59 may be provided on the upper surface, the rear surface, or the front surface of the drain tank 40 as long as it is only for removing the remaining water.

<Explanation Regarding Blow-Out Nozzle> Both the upper blow-out nozzle 32 and the lower blow-out nozzle 33 are attached to the manual insertion portion 5, but it is necessary to have an inclination to form a pressure gradient from the inlet to the back, and high pressure is required. In consideration of this and assembling, etc., it is configured as a single body so as to fit into the mounting holes formed in the upper and lower insertion portion panels 9 forming the hand insertion portion 5, and the profile of the inner surface of each insertion portion panel 9 is A surface 60 having nozzle holes 34 to be continuous is provided (see FIG. 9). However, there is a case where the whole of the nozzle holes 34, including the hole edges, is formed on the surface 60 that makes the profile of the inner surface of the insertion portion panel 9 continuous.
In some cases, it may project slightly like a teat. That is, the elements required for the upper and lower blowing nozzles 32 and 33, such as the hole angle of the nozzle hole 34, are configured in a complete manner in which all the elements are satisfied by mounting them in the mounting holes.

With the above structure, the upper and lower insertion portion panels 9
All that is required for the upper and lower blowing nozzles 32 and 33 is to be satisfied only by fitting and mounting them in the mounting holes formed in. In the attached state, the shape is assimilated to the profile of the inner surface of the hand insertion portion 5, so that the touch and appearance are good and dirt is not easily attached.

Further, the upper blowing nozzle 32 is also the lower blowing nozzle 3
3 also has a plurality of nozzle holes 34 arrayed and formed on the surface 60 that connects the profile of the inner surface of the insertion portion panel 9, but at least the central portion of the lower outlet nozzle 33 has both hands aligned in a natural state. Nozzle holes 34 are formed with a pitch 61 corresponding to the gap between the two hands formed when it is pushed out or with a pitch wider than other portions (FIG. 2).
reference).

Thus, a weak wind region is formed at the center of the hand insertion portion 5, and the wind containing water is not blown from the space between both hands inserted in the hand insertion portion 5 to the user's face or the like.
Further, it is possible to form the wind environment in the manual insertion part 5 that also advantageously acts on the drainage from the drainage port 18 described above.

<Explanation Regarding Attachment Structure of Blow-Out Nozzle> As shown in FIG. 7, the upper blow-out nozzle 32 and the lower blow-out nozzle 33 are blown out to the upper air duct 30 and the lower air duct 31, respectively, which are expanded into a flat trumpet shape. It is connected and fixed to the end. The upper air duct 30 and the lower air duct 31 are integrally formed with outwardly projecting flanges 62 at the air outlet side ends. On the other hand, the upper blowing nozzle 32 and the lower blowing nozzle 33
Also, a flange 64 that projects radially toward the high-pressure air introduction portion 63 is provided. The connection between the two is as shown in FIG. 1 between the flange 62 on the duct side and the flange 64 on the nozzle side.
The O-ring 65 of the airtight holding member as shown in FIG. 2 is sandwiched, the mounting plate 66 is placed along the back surface of the flange 62 on the duct side, and the flanges 62 and 64 are fastened together by a plurality of screws. There is.

The upper outlet nozzle 32 and the lower outlet nozzle 33 are
The upper air duct 30 and the lower air duct 31 are attached to the hand insertion portion 5 from the back side thereof with attachment screws while being connected to each other. The mounting screws are such that the flanges 62 and 64 are fastened together, and are screwed into the bosses formed on the edge of the mounting hole in the left and right and the upper part. The upper air duct 30 is located below the upper blowing nozzle 32 and the lower blowing nozzle 33.
Since it is hidden behind the lower air duct 31 and the screw tightening operation is difficult, a locking protrusion (provided on the nozzle side or the mounting side) that restricts the movement in the front-back direction and an engaging portion that engages with this. It is fixed by a locking structure (not shown) such as (provided on the nozzle side or the mounting side). With such a structure, the upper blowing nozzle 32 and the lower blowing nozzle 33 can be easily mounted in a stable state by a simple operation even when receiving the action of high-pressure air.

<Explanation on Airtightness of Nozzle Mounting Part>
The O-ring 65, which is sandwiched between the nozzle side and the duct side to maintain airtightness, is formed in a substantially toe-shaped cross-sectional shape as shown in FIG. 14 in a free state. That is, a series of ridges or rib-like or lip-like highly airtight holding structures 67 having weak compressive strength are integrally formed at the ends of the opposing surfaces receiving a compressive load. In the illustrated example, the highly airtight holding structures 67 are arranged in a zigzag manner on the opposing surfaces, but there is no functional problem if they are provided only on the contact surface 68 that contacts the flange 62 on the duct side.

When the O-ring 65 is sandwiched between the duct side flange 62 and the nozzle side flange 64 and compressed by screw tightening, the O-ring 65 is changed from the free state shape shown by the broken line in FIG. 15 to the solid line in FIG. The shape changes to the functional state shown in. That is, the high airtightness holding structures 67 on both sides are crushed by compression, and the volume R is continuous with the flange 62 on the duct side.
Shaped portion 69 and cylindrical high pressure air introduction portion 63 on the nozzle side
It bites so as to escape into the gap formed between and, and closes the part in a highly airtight state. Therefore, the airtightness of the high-pressure air sent from the high-pressure air generator 7 can be reliably and firmly maintained for a long period of time.

<Explanation Regarding the Structure of the Intake Portion of the Hand Insertion Portion> A mesh-structured filter 20 is removably attached to the intake port 19 so that foreign matter such as paper and a handkerchief is not accidentally sucked in. As described above, in this embodiment, as shown in FIG.
Furthermore, a structure for preventing another foreign substance from entering the inside is provided. That is, a grid 70 (which may be a vertical grid, a horizontal grid, or a square grid) that does not obstruct ventilation is provided in the back of the filter 20 having a mesh structure. This grid 70
Is the intake port 1 of the second air guide 42 in this embodiment.
Although it is formed integrally with the opening end of the connection with 9, it may be formed as a separate component and mounted, or may be provided integrally or separately with the intake port 19 of the hand insertion portion 5.

With the above-described lattice 70, even if an object is accidentally dropped into the hand insertion portion 5 with the filter 20 removed for cleaning or the like, it is obstructed by the lattice 70 and is sucked from the intake port 19. Since it does not get inside, it is possible to prevent troubles due to foreign matter entering as much as possible.

<Description of Structure Concerning Sound Insulation> In the hand dryer of this embodiment, each DC brushless motor 27 of the high-pressure air generator 7 is covered with a sound absorbing material, and the inner surface of the front panel 8 is covered with the sound absorbing material. Sound insulation measures have been taken. What is described here is a configuration that shuts off the sound when air is sucked from the first air guide 36 into the high-pressure air generation unit 7. That is, as shown in FIG. 8, a semi-cylindrical or horseshoe-shaped sound insulation wall 72 having a curved surface 71 on the inflow side of the air from the second air guide 42 is provided at the bottom of the first air guide 36. The upper end surface of the sound insulation wall 72 is configured to abut the rim of the suction portion of the high-pressure air generating portion 7. The air itself is sucked through the open portion 73 of the sound insulation wall 72. In this embodiment, two sound insulation walls 72 formed of a sound absorbing material are fixed to the bottom of the first air guide 36 as shown in the figure, but the bottom of the first air guide 36 is formed. You may form integrally.

The sound-insulating wall 72 having the above structure smoothes the suction flow from the first air guide 36 to the high-pressure air generating portion 7 due to its shape, so that the sound when the air is sucked is reduced and at the time of sucking the air. Since the sound of is also shielded, the sound leaking from the intake port 19 of the hand insertion portion 5 is reduced, and the cleanliness during driving can be improved.

<Explanation Regarding Wall Mounting Structure> The hand dryer of this embodiment is fixed and installed on the inner wall surface of a hand washing room or the like on the back surface. The wall dryer is mounted on the wall surface as shown in FIG. It is performed using the wall mounting plate 10. The wall mounting plate 10 has a width substantially equal to that of the back plate 11 of the box body 6, is configured as a plate having a vertical dimension slightly shorter than the back plate 11, and is fixed to the wall surface by several screws. On the left and right of the upper part of the wall mounting plate 10, upward hooks 74 are cut and raised on the side opposite to the wall contact surface. Further, screw fixing portions 75 are formed in the center of the lower portion and the center of the upper end portion, respectively. Further, stable side edge portions 76 having a protrusion amount substantially equal to the hook 74 are provided on both side edges of the wall mounting plate 10.
Are formed continuously or discontinuously. The rear plate 11 of the box 6 has mounting holes 7 that engage with the hooks 74.
7, and a screw fixing part 7 between the upper center and the center near the lower part.
5 is provided with a screw mounting portion 78.

The box 6 is hooked on the wall mounting plate 10 and fixed with screws. At this time, the stable edge portions 76 on both sides of the wall mounting plate 10 come into contact with the back plate 11 of the box body 6, so that the horizontal swing of the box body 6 is restricted and the box body 6 is mounted in a stable state. . Stable margin 7
6 also functions as a rib that enhances the rigidity of the wall mounting plate 10 itself. It should be noted that mounting the box body 6 slightly tilted forward is effective in preventing water leakage to the back side of the drain tank 40 described above.

<Explanation Regarding Sensitivity Adjustment of Sensors> The respective sensors 25 on the entrance side and the back side, which detect the entering and leaving of the hand into and out of the hand insertion portion 5 by infrared rays, emit light due to a difference in the light environment of the place of use and a temporal factor. The desired detection accuracy may not be maintained due to changes in strength. Therefore, the hand dryer of this embodiment is provided with the sensor sensitivity automatic correction device as shown in FIG. This sensor sensitivity automatic correction device
It is composed of a microcomputer 79 and a correction circuit 80. The correction circuit 80 is connected to infrared light receiving elements such as a plurality of phototransistors, and has resistors 81, 8
2, 83, 84 and a transistor 85. The bases of the transistors 85 of the correction circuit 80 are the output ports D5 and D6 of the microcomputer 79, respectively.
And is turned on / off by switching Hi / Low of the output ports D5 and D6. The outputs of the infrared light receiving elements such as a plurality of phototransistors in each sensor 25 are all AD-converted to obtain the microcomputer 79.
Entered in.

The correction of the sensor sensitivity is carried out by the program of the microcomputer 79. FIG. 17 is a flowchart showing the program. That is, when the power is turned on or at regular intervals, first in step 1, the infrared light emitting element such as the photo LED of the sensor 25 is turned on, and in step 2, the output of the infrared light receiving element of the sensor 25 at that time is AD.
It is input, and in step 3, the AD input value is stored in the memory. The detection of the output level of the sensor 25 is repeated eight times in this embodiment so that a noise error does not occur.
All output levels for each time are stored in memory. In step 4, it is judged whether or not the number of times is completed,
If it is not completed, the process returns to step 1, and if it is completed, the process proceeds to step 5.

From step 5 to step 8, the same operation as that from step 1 to step 4 is carried out for the sensor 25 at the other stage (for example, disposed on the back side).
When the detection of the output levels of the sensors 25 on the inlet side and the rear side is completed, the process proceeds to step 9. In step 9, the average value of each output level is calculated eight times, and the threshold value is set. At this time, the upper and lower limits are set for the threshold in order to avoid malfunctioning for 30 seconds continuously in a state of abnormal sensitivity, and even when the upper limit is exceeded, the threshold is set to the upper limit. If the value falls below the lower limit value, the threshold value is processed as the lower limit value. In step 10, it is determined whether the threshold value in step 9 is larger than the lower limit value. If the threshold value is larger than the lower limit value in step 10, the program of the correction operation is ended. If the threshold value is smaller than the lower limit value, the process proceeds to step 11. Step 1
1, the output ports D5, D of the microcomputer 79
6 (the sensor on the inlet side and the sensor on the rear side are set individually and independently) is switched from the Hi level to the Low level, and the process returns to step 1.

As a result, the transistor 85 is turned on,
The current to the infrared light receiving element concerned is increased and the input sensitivity is lowered. That is, the sensitivity adjustment of the sensor 25 according to the situation is automatically performed when the power is turned on or at regular intervals, and the malfunction due to the malfunction of the sensor 25 is avoided.

<Explanation Regarding Insulation for Preventing Electric Leakage> In the hand dryer of this embodiment, as described above, the high-pressure air generator 7 exists in the flow path of air containing water. Each DC brushless motor 27 of the high-pressure air generator 7 is driven by a drive circuit 28 controlled by an inverter, but it is possible that the DC brushless motor 27 sucks in water contained in the air flow. The DC brushless motor 27 has a built-in magnetic pole position detection circuit 87 that uses a Hall element 86 that detects the magnetic pole position of the rotor in order to determine the phase in which the motor winding is energized. Due to the structure of the Hall element 86, the detection portion is exposed, so that the moisture contained in the air flow is generated by the DC brushless motor 27.
If it gets inside, electrical insulation may not be maintained between the magnetic pole position detection circuit 87 and the stator core, between the stator core and the motor frame, and electric leakage may occur.

Therefore, in the hand dryer of this embodiment, the drive circuit 28 having the structure shown in FIG. 18 is formed. That is, the power is supplied to the Hall element 86 via the insulating transformer 88, and the output of the magnetic pole position detection circuit 87 is sent to the motor control circuit 90 via the photocoupler 89. The magnetic pole position detection circuit 87 side and the power supply / motor control circuit 90 side are insulated, so that even if moisture enters the DC brushless motor 27, leakage from the hall element 86 is avoided and the function is stable. Also, the safety is improved.

<Description of Abnormality Display Structure> The hand dryer of this embodiment is provided with an abnormality display device for displaying an abnormality of each part on the display part 15 of the upper panel 13. This abnormality display device, as shown in FIG. 19, includes a control circuit 91 and a plurality of abnormality detecting means 92, 93, 9 arranged in the main part.
4, 95 and display means 96. For example, the abnormality information of the internal temperature of the high-pressure air generator 7, the abnormality information of the current of each DC brushless motor 27, the abnormality information of the water level of the drain tank 40, the abnormality information of the duct, etc. are respectively detected by the abnormality detecting means 92, 93, 94, 95. Each is detected and input to the control circuit 91. The display unit 96 includes a plurality of display elements (for example, LEDs),
The control circuit 91 operates so that the content of the abnormality can be specified. As a result, the content of the abnormality can be specified and the abnormality can be dealt with quickly. In this embodiment, FIG.
The display element 0 for displaying the operation guidance is used as it is. That is, by turning off one of the plurality of display elements arranged in a line and causing the other display elements to blink,
The multiple display patterns 97 as shown in FIG. 4 are configured, and the abnormality content is associated with each display pattern 97, so that the abnormality content can be specified.

Example 2. 22 is a schematic vertical sectional side view showing the main part of the construction of a hand dryer according to another embodiment of the present invention. In addition, the same or corresponding components as those of the hand dryer according to the first embodiment are designated by the same reference numerals in the drawings, and the description thereof will be omitted.

In the hand dryer of this embodiment, the back side of the hand insertion portion 5 is extended from that of the first embodiment, the extended portion is configured as an open container 98, and the drain portion 99 is provided at the bottom portion. The hand insertion portion 5 is provided with a cleaning liquid pouring port 100 with a valve for supplying the cleaning liquid. The cleaning liquid may be water, warm water, or disinfectant.

The hand dryer of this embodiment can perform hand washing and hand drying at the same time, and is used as a hand dryer in places where high hygiene and cleanliness are required. be able to. Note that this hand dryer may be configured as a build-in type incorporated in a building because it has a drainage system, a water supply system, and the like.

[0089]

As is apparent from the description of the embodiment, the invention of claim 1 makes it possible to carry out a quick and hygienic drying process of a wet hand . In particular, the water removed from the hands by the drying process is drained smoothly without stagnation,
It is hygienic and easy to use, improving the usability .

According to the second aspect of the present invention, the wet hand can be quickly washed.
The hygienic drying process can be done easily. In particular, dry hands
Because the air used for the purpose is circulated and used, the wind to the outside
The amount of release can be reduced, and the
Rubbable can be prevented and maintainability is improved.
It

According to the invention of claim 3, the invention of claim 2
In addition to the effect of
Since there will be children, use a filter when cleaning.
Even if you remove it, it will be difficult for foreign matter to enter the inside through the suction port,
Trouble due to intrusion of objects can be prevented, maintainability
Is improved.

According to the invention of claim 4, the wet hand can be quickly washed.
The hygienic drying process can be done easily. Especially for dry processing
A sheet that can be used to replace the water droplets that drip from wet hands before entering.
The sheet-shaped member can be made to absorb water and the sheet-shaped member can be replaced.
This keeps the part clean and keeps it in good condition.
Improve.

According to the invention of claim 5, the invention of claim 1
In addition to the effect of
It will be collected, run down, and drained to the drain tank.
The effect is that the drainage route is always drained smoothly.
It In particular, a relatively large amount of water is
Even if it happens, the drainage is stagnant and water leaks inside the device.
There is no such thing.

According to the invention of claim 6, a wet hand can be quickly washed.
The hygienic drying process is easy and
Smooth drainage of the removed water without stagnation
It is hygienic and easy to use, improving the usability.
, Improve drainage of water when not in operation
You can

According to the invention of claim 7, a wet hand can be quickly washed.
The hygienic drying process can be done easily and high pressure air
Provide a special cooling device for the circuit that drives the generator
Can be actively cooled without the need for improved device reliability
To do.

According to the invention of claim 8, the wet hand can be quickly washed.
The hygienic drying process can be done easily with the hand insertion part.
It is possible to treat the water blown off into the tank as waste water.
Wear. Especially, the water in the tank is retained using the receiving port and the drain hole.
Can be removed so that it does not stay, and the tank is hygienic
Easy to maintain in a state.

According to the invention of claim 9, the wet hand can be quickly washed.
The hygienic drying process can be done easily and the drying process
Occasionally, blow out from between the hands
There is no wind and the usability is improved.

According to the invention of claim 10, the quickness of a wet hand
A quick and hygienic drying process can be performed easily and high pressure
High-pressure air from the air generator leaks at the nozzle connection
And stable performance can be maintained.

According to the invention of claim 11, the quickness of a wet hand
A quick and hygienic drying process can be performed easily and high pressure
The noise generated at the suction part of the air generation part can be reduced and the sound can be insulated.
Rolling noise is reduced.

According to the invention of claim 12, the quickness of a wet hand
A quick and hygienic drying process can be performed easily and the hands can be detected.
Since the sensitivity of the sensor you know is automatically corrected,
Entry and exit of hands are detected, and malfunctions due to sensors are avoided
be able to.

According to the thirteenth aspect of the invention, the quickness of a wet hand
Quick and hygienic drying process can be done easily, and brush
Even if water gets into the motor, the leakage current can be avoided.
This improves the stability and safety of functions.

According to the fourteenth aspect of the invention, the quickness of a wet hand
A quick and hygienic drying process can be performed easily, and
A common display means for operation guidance display and abnormality content display
Therefore, it is possible to identify abnormalities with a simple configuration.
Function and maintenance becomes easier.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an entire hand dryer according to an embodiment of the present invention.

FIG. 2 is a plan view showing an entire hand dryer according to an embodiment of the present invention.

FIG. 3 is a rear view showing the entire hand dryer according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view showing an enlarged part of the configuration of the box body of the hand dryer according to the embodiment of the present invention.

FIG. 5 is an exploded perspective view showing an enlarged part of the configuration of the box body of the hand dryer according to the embodiment of the present invention.

FIG. 6 is an enlarged perspective view showing one of the side plates of the box body of the hand dryer according to the embodiment of the present invention.

FIG. 7 is an exploded perspective view showing an enlarged configuration of a high pressure air generating portion of a hand dryer according to an embodiment of the present invention.

FIG. 8 is an exploded perspective view showing an enlarged configuration of a frame portion of the hand dryer according to the embodiment of the present invention.

FIG. 9 is a cross-sectional view showing, in an enlarged manner, a mounting portion of a lower blowing nozzle of a hand dryer according to an embodiment of the present invention.

FIG. 10 is a schematic partial perspective view showing another embodiment of the hand insertion portion of the hand dryer according to the embodiment of the present invention.

FIG. 11 is an enlarged vertical sectional view showing the configuration of the lower portion of the box body of the hand dryer according to the embodiment of the present invention.

FIG. 12 is an exploded perspective view showing the configuration of the circuit box of the hand dryer according to the embodiment of the present invention.

FIG. 13 is an enlarged plan view of the O-ring of the hand dryer according to the embodiment of the present invention.

14 is an enlarged cross-sectional view taken along the line AA in FIG.

FIG. 15: O in a hand dryer according to an embodiment of the present invention
It is an expanded sectional view which shows the function of a ring.

FIG. 16 is a circuit diagram of a sensor sensitivity automatic correction device for a hand dryer according to an embodiment of the present invention.

FIG. 17 is a flowchart showing the operation of the sensor sensitivity automatic correction device of the hand dryer according to the embodiment of the present invention.

FIG. 18 is a circuit configuration diagram showing a configuration of a motor drive circuit of a hand dryer according to an embodiment of the present invention.

FIG. 19 is a circuit configuration diagram of an abnormality display device of a hand dryer according to an embodiment of the present invention.

FIG. 20 is a front view of the display unit of the hand dryer according to the embodiment of the present invention.

FIG. 21 is an explanatory view showing an abnormal display pattern of the hand dryer according to the embodiment of the present invention.

FIG. 22 is a cross-sectional view showing a hand dryer as another embodiment of the present invention.

FIG. 23 is a cross-sectional view showing the configuration of a conventional hand dryer.

[Explanation of Codes] 5 Hand Insertion Section 6 Box Body 7 High Pressure Air Generation Section 18 Drain Port 19 Intake Port 20 Filter 24 Sanitary Sheet 25 Sensor 27 DC Brushless Motor 28 Drive Circuit 30 Upper Air Duct 31 Lower Air Duct 32 Upper Blowing Nozzle 33 Lower outlet nozzle 34 Nozzle hole 37 Drain tray 38 Circuit part 39 Circuit box 40 Drain tank 41 Opening 43 Drain piece 44 Drain hose 45 Receptacle 47 Opening 48 Guide wall 49 Vent hole 59 Drain hole 65 O-ring 67 High airtight holding structure 70 lattice 72 sound insulation wall 73 open portion 79 microcomputer 80 correction circuit 87 magnetic pole position detection circuit 88 insulation transformer 89 photocoupler 90 motor control circuit 91 control circuit 96 display means 97 display pattern

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Hotta 1-3 Komaba-cho, Nakatsugawa-shi, Gifu Mitsubishi Electric Corporation Nakatsugawa Works

Claims (1)

[Claims] 1. A box body forming an outer shell having front and side open channel-shaped hand insertion portions on the front side, blow nozzles respectively disposed on upper and lower surfaces of the hand insertion portion, and the blow outlet. A high-pressure air generator for sending high-pressure air to the nozzle, and a hand-drying device having a drain port for draining water outside the hand-insertion portion, at a lateral end of the inner bottom surface of the hand-insertion portion. .