JP2000175839A - Hand dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand dryer that does not require much time for drying due to high drying performance, can prevent the feeling temperature of a user from dropping and makes a user feel good while using. SOLUTION: The area of the opening of a blast blowout port 51 can be varied by swinging a moving member 61 by a variable blowout mechanism 60 of a blowout means 50, and the scope of air blowout and wind velocity can be adjusted. In this case, by the control of a control means, the area of the opening of the blast blowout port 51 can be increased gradually from the start to the end of drying.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an apparatus body having at least a blower and a blower for blowing out blown air toward the hand insert in a case cover having a hand insert. The present invention relates to a hand drying device for drying hands washed with water.

[0002]

2. Description of the Related Art Conventionally, when a user inserts a hand into a hand insertion portion provided in a case cover, a warm air is generally blown from a blowout opening provided to face the inside of the hand insertion portion. (Or cool air) is blown out and dried while blowing off water droplets attached to the hand. The structure of the outlet is described in, for example, JP-A-10-7.
Japanese Unexamined Patent Publication No. 1101 and one shown in FIG. 11 are known.

[0003] The former outlet is formed in the shape of a nozzle whose width becomes gradually narrower toward the front end side, and is capable of blowing a strong jet hot air (hereinafter, referred to as a high-speed type). On the other hand, the latter outlet 1 has a relatively large outlet area, and is set so that warm air can easily hit the entire hand evenly (hereinafter, a low-speed type).

[0004]

However, in the conventional hand drying apparatus as described above, if the high-speed type outlet is used, the air velocity of the blown air is high.
When a large amount of water adheres to the hand, there is an advantage that the water is easily blown off, but the following problem has occurred.

That is, in the high-speed type, when the amount of water adhering to the hand is reduced, the opening area of the outlet is originally small, so that it is difficult to apply air to the entire hand, which is a problem in drying performance. In addition, since the wind speed is high, the perceived temperature tends to decrease, and if the drying operation is continued for a long time, the hand (particularly the fingertip) becomes cold, causing a problem of discomfort.

On the other hand, since the blowing area of the low-speed type outlet 1 is relatively large, unlike the high-speed type, when the amount of water adhering to the hand is reduced, the entire hand can be blown. Since the drying performance is good and the wind speed is low, there is an advantage that the usability is good without lowering the perceived temperature, but there are the following problems.

That is, in the low-speed type, even when a large amount of water adheres to the hand, the water cannot be blown off sufficiently because the speed of blowing the warm air is originally low. Therefore, there is a problem that extra operations such as strongly rubbing hands are required, which is troublesome, and that drying takes time.

The present invention has been made in view of the above-mentioned problems of the prior art, and is capable of blowing off a large amount of water attached to a hand and blowing the wind over the entire hand in a wide range. The purpose of the present invention is to provide a hand-drying device which has good drying performance, does not take much time for drying, can prevent the user's sensible temperature from lowering, and has excellent usability. And

[0009]

Means for Solving the Problems The gist of the present invention for achieving the above-mentioned object lies in the following inventions. [1] A hand drying device (1) including at least a blowing means (30) and a blowing means (50) for blowing out blown air.
In (0), the blowing means (50) includes a blower outlet (51) and a variable blower mechanism (60), and the blower outlet (51) is configured to allow the blown air to pass therethrough. The variable drying mechanism (60) is arranged so as to be able to at least adjust an air blowing range and a wind speed by changing an opening area of the blowing outlet (51). Apparatus (10).

[2] In a case cover (11) having a hand insertion part (13), at least a blowing means (30) and a blowing means (39) for blowing the blown air toward the inside of the hand insertion part (13). 50), the blowing means (50) comprises a blower outlet (51) and a variable blowing mechanism (6).
0), and the blowing outlet (51) is disposed at a position facing the inside of the hand insertion portion (13) so that the blown air passes therethrough, and the variable blowing mechanism (60) is provided. The hand drying device (10), characterized in that at least the air blowing range and the wind speed can be adjusted by changing the opening area of the blowing outlet (51).

[3] The variable blowing mechanism (60) extends along the inner edge of the blowing outlet (51) extending in the lateral width direction.
A movable member (61, 161) capable of being displaced in the vertical width direction of the blower outlet (51) is provided [1].
Or the hand dryer (10) according to [2].

[4] The movable member (61) of the variable blowing mechanism (60) is formed in a plate shape extending in the width direction along the inner edge of the blower outlet (51), and the movable member (6) is formed.
The hand dryer (10) according to [3], wherein 1) is swingably supported on the inner edge side of the blower outlet (51) via a pivot extending in the width direction thereof.

[5] The movable member (161) of the variable blowing mechanism (60) is formed in a plate shape extending in the width direction along the inner edge of the blower outlet (51).
61), characterized in that one long side thereof is disposed so as to be slidable from the inner edge side of the blower outlet (51) in the longitudinal width direction of the blower outlet (51). Hand drying device (10).

[6] The variable blowing mechanism (60) includes a drum (26) for covering the blowing outlet (51) in the width direction thereof.
1), a communication port (262) penetrating the drum (261) in the cross-sectional diameter direction is formed so as to extend in the axial direction of the drum (261), and the rotation of the drum (261) causes The communication port (262) is connected to the air outlet (5
The hand drying device (10) according to [1] or [2], wherein an amount of the hand drying that is overlapped with the inner edge side of the item (1) is adjustable.

[7] The variable blowing mechanism (60) sets the opening area of the air blowing outlet (51) small at the start of hand drying to narrow the air blowing range and the wind speed, and thereafter, [1], [2], [3], [4], [4], characterized in that the opening area of the blower outlet (51) is increased to widen the air blowout range and set the wind speed slower.
The hand drying device (10) according to [5] or [6].

Next, the operation based on the above-mentioned solution will be described. In the hand drying device (10) according to the present invention, the variable blowing mechanism (60) changes at least the opening area of the blowing outlet (51), so that the air blowing range and the wind speed can be adjusted at least.

Here, if the opening area of the blower outlet (51) is made smaller, the air blowing range becomes narrower, but the wind speed increases under the condition that the air volume is constant. In such a case, even if a large amount of water adheres to the hands, the water can be sufficiently blown off, and no extra operation such as strongly rubbing the hands is required, and the time required for drying can be reduced. it can.

Conversely, if the opening area of the blower outlet (51) is made larger, the range of air blowout becomes wider, but the wind speed becomes lower under the condition that the air volume is constant. In such a case, since the wind can be evenly applied to the entire hand, the drying performance is good,
In addition, since the wind speed is slow, the usability is good without lowering the perceived temperature.

As described above, according to the hand drying device (10), both the high-speed type and the low-speed type of the conventional technology can be selectively realized by a single device. While achieving the benefits of
Problems can be eliminated.

That is, at the start of hand drying, the advantage of the high-speed type can be achieved by adjusting the opening area of the blowing outlet (51) to be small. Then, when the water adhering to the hand is reduced, if the opening area of the blower outlet (51) is adjusted to be large, the advantage of the low-speed type can be achieved.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments representing the present invention will be described below with reference to the drawings. 1 to 7 show a first embodiment of the present invention. The hand drying device 10 according to the present embodiment includes a case cover 11 having a hand insertion portion 13.
The apparatus main body 20 is incorporated therein.

When the user inserts his / her hand into the hand insertion portion 13 of the case cover 11, the hand drying device 10 blows air from blowing means 50 disposed so as to face the inside of the hand insertion portion 13, and the hand drying device 10 This is a device for drying while blowing off water droplets attached to the surface. In general, the hand dryer 10 is installed on a washroom, a wall surface of a toilet, or the like.

As shown in FIGS. 1 and 2, the case cover 1
1 is a front part 12 mounted so as to cover the apparatus main body 20, a hand insertion part 13 formed as a space under which a hand can be inserted, and a water receiving part 14 protruded forward from the lowermost end thereof. Consists of The case cover 11 is integrally formed of a synthetic resin. A water receiving tray 15 for storing water is detachably attached to the lower side of the water receiving portion 14.

The apparatus body 20 is assembled from a blowing means 30, a heating means 40 for heating the blown air to a predetermined temperature, a blowing means 50 for blowing the heated air toward the hand insertion section 13, and the like. I have. Each component of the apparatus main body 20 is integrally combined as one unit.

As shown in FIGS. 1 and 2, the blowout means 50 forming the basis of the present invention is disposed at the lowermost end of the apparatus main body 20. The blowing means 50 blows air blown from the blowing means 30 located above and heated by the heat generating means 40 downward.

The blowing means 50 has a blowing outlet 51 and a variable blowing mechanism 60. The blower outlet 51 is disposed at a position facing the inside of the hand insertion portion 13 downward so that the blown air passes therethrough. The blower outlet 51 is formed in a narrow rectangular shape extending horizontally. The upper part of the blower outlet 51 is shaped so that the internal space is narrowed toward the blower outlet 51.

The variable blowing mechanism 60 is provided with
By changing the opening area, the air blowing range and the wind speed can be adjusted at least. The variable blowing mechanism 60 is provided with a movable member 61 that can be displaced in the vertical width direction of the blowing outlet 51 along the inner edge of the blowing outlet 51 extending in the horizontal direction.

More specifically, the blowing outlet 51 is
The concept includes not only the opening edge 51a of the blowing means 50 opened downward but also a peripheral portion 51b extending in the air passage direction so as to be continuous with the opening edge 51a. The inner walls of the opening edge 51a and the peripheral portion 51b are, so to speak, the inner edges of the blower outlet 51.

The movable member 61 of the variable blowing mechanism 60
It is formed in a narrow plate shape extending in the lateral width direction along the inner edge of the blowing outlet 51. The movable member 61 is pivotally supported on the inner edge side of the blower outlet 51 via a pivot 62 extending in the lateral width direction.

Here, the inner edge side of the blower outlet 51 refers to a portion where the inner wall of the peripheral portion 51b is on the same plane as one long side (the right side in FIG. 1) of the opening edge 51a. As shown in FIGS. 1, 3 and 4, a support plate 63 extending in the width direction is attached to the portion, similarly to the movable member 61.

Along the leading edge of the support plate 63, the pivot 6
The movable member 61 is mounted so as to be pivotable about the pivot shaft 62 in the vertical width direction of the blower outlet 51 at the distal end side extending in the horizontal width direction.
The movable member 61 is provided with the blower outlet 51 (more precisely, the inner cross section of the opening edge 51a or the peripheral portion 51b).
Is to change the opening area.

That is, as shown in FIG.
In a state in which the air outlet 1 is lifted to be close to the horizontal plane so as to close the air outlet 51 as much as possible, the vertical width W1 of the air outlet 51 is set to be small, and the opening area of the air outlet 51 is
It is reduced in the vertical width direction.

On the other hand, as shown in FIG. 4, in a state where the movable member 61 hangs downward so as not to block the blower outlet 51 as much as possible, the vertical width W2 of the blower outlet 51 is set wide. The opening area of the blowing outlet 51 is extended in the vertical width direction as compared with the case of FIG.

A drive source 64 (FIG. 5) is connected to the pivot 62 directly or via a speed reduction mechanism (not shown).
Output shaft) is connected. Here, the drive source 64 is capable of electrically swinging the movable member 61 integrated with the pivot 62. Specifically, for example, a normal motor, a rotary solenoid, or the like may be used.

As shown in FIG. 5, the driving source 64 is connected to control means 70. The control means 70 is constituted by, for example, a microcomputer, and controls the driving of the blower means 30 and the heat generating means 40, which will be described later, in addition to the drive source 64.

The control means 70 includes a detection sensor 17 which will be described later.
Activates the blowing means 30 and the heat generating means 40 when a finger is detected, and controls the driving source 64 so that the opening area of the blowing outlet 51 automatically changes during the operation of the blowing means 30 and the like. It is programmed to adjust to

Specifically, under the control of the control means 70, in the variable blowing mechanism 60, at the start of the hand drying, the opening area of the air blowing outlet 51 is in the initial state where it is the smallest (see FIG. 3), and the air is discharged. Although the blowing range is set to be narrow and the wind speed is set to be high, the opening area of the blowing outlet 51 is adjusted so that the opening area becomes large.

That is, as shown in FIG. 7, when a predetermined time elapses in the initial state where the opening area of the blower outlet 51 is small, the opening area of the blower outlet 51 increases by one step (this state is referred to as an intermediate state). After a lapse of a predetermined period of time, the opening area of the blow-out port 51 becomes larger by one step (see FIG. 4), and the blow-out range of the air is widened to the maximum, and the wind speed is reduced accordingly. Is adjusted as follows.

As described above, in the present embodiment, the driving source 64
The swinging drive of the movable member 61 by the
Is set such that the opening area changes with time in three stages in all of the initial state → intermediate state → final state. Note that, as shown in FIG.
The opening area of No. 1 is preset so as to be exactly halfway between the initial state and the final state.

Of course, the opening area of the blower outlet 51 is 3
The stepwise adjustment is only an example. For example, the stepwise adjustment may be made to increase gradually, or may be adjusted to only two steps, or may be adjusted to four steps, five steps,. Note that, regardless of the change in the opening area of the blower outlet 51, the operation amount of the blower means 30, that is, the amount of air sent to the blower means 50 is set to be constant.

As shown in FIG. 1, the air outlet 51 of the blowing means 50 penetrates through the bottom of the front part 12 facing the hand insertion part 13, and air is blown into the case cover 11. An inlet 16 for introduction is provided. Also,
A detection sensor 17, a power switch, an air volume switch, a heater switch, and the like (not shown) are also provided.

The detection sensor 17 detects a hand when the user puts a hand in the hand insertion section 13. Specifically, for example, a Doppler ultrasonic distance detector or a light reflection type And a photo sensor or an infrared sensor. The power switch turns on / off the power of the entire apparatus. The air volume changeover switch adjusts the output of the air blowing means 30.
Further, the heater changeover switch turns on / off the heating means 40.
FF.

As shown in FIG. 2, the apparatus main body 20 is disposed near one side wall surface in the front portion 12, and the remaining space near the other side wall surface forms a main part of a ventilation path.
Here, the ventilation path is a path through which the air taken in from the suction port 16 reaches the blowing means 50.

The upper end of the apparatus body 20 is
An air supply port 22 for sending air to the air blowing means 30 is formed on the upper end side of the apparatus main body 20. More specifically, the outer shell of the device body 20 is
At its uppermost end, a case lid 21 is included, and the air supply port 22 is formed as a round hole substantially at the center of the case lid 21.

As shown in FIG. 2, the air supply port 22 has:
A mesh-shaped filter 23 formed in a thin circular shape almost conforming to the shape is mounted, and a block-type filter 24 is mounted on the upper side of the mesh-shaped filter 23.
The filter 24 has air permeability that allows air to pass from the entire surface exposed to the outside toward the air supply port 22.

Specifically, a sponge-like filter is used as the filter 24. Here, the sponge-like filter is obtained by processing a resin foam into a three-dimensional skeleton structure. Such a sponge-like filter is
It has very low ventilation resistance and generally has a high dust collection ability. Note that the filter 24 also serves as a sound absorbing material that absorbs the sound emitted from the blower 30.

As shown in FIG. 2, the air blowing means 30 is provided at the upper part of the apparatus main body 20 and blows the air in the front part 12 downward inside the apparatus main body 20.
The blowing means 30 includes a drive motor 31 and the drive motor 31.
And a fan 32 driven to rotate. The drive motor 31 is connected to the control means 70 via a signal line.

The fan 32 is a so-called turbo fan, and has a cylindrical hollow portion on the rotation center side, and has a number of blades arranged radially from the rotation center. When a large number of blades rotate, suction pressure is generated in the hollow portion. A sound absorbing material 25 made of ordinary urethane foam is arranged around the drive motor 31 of the blowing means 30, and an anti-vibration rubber 26 is arranged around the fan 32.

The ventilation path communicates with the air supply port 22, the blowing means 30, and the blowing means 50 also inside the apparatus main body 20, so that the blowing means 30 and the blowing means 50 which will be described later are connected. Heating means 40 is provided between them.
The heating means 40 is also connected to the control means 70 via a signal line.

The heating means 40 heats the air blown downward from the blowing means 30 to an appropriate temperature. Specifically, the heat generating means 40 is formed, for example, by joining a corrugated aluminum fin to a PTC heater. PT
The C heater is formed of a semiconductor ceramic resistor containing barium titanate as a main component and having a property of rapidly increasing a resistance value at a predetermined temperature or higher.

The heating means 40 composed of such a PTC heater causes a current to flow when a voltage is applied, self-heats due to Joule heat, and rises in temperature. However, when a predetermined switching temperature is reached, the resistance value sharply increases. As a result, the current decreases and becomes constant. That is, it has a function to automatically keep the temperature above a certain temperature and keep the temperature constant.

Next, the operation will be described. FIG. 6 shows a hand drying device 1
6 is a flowchart showing the operation of the "0" operation. As shown in FIG. 6, the control unit 70 turns on the detection output of the detection sensor 17.
Is constantly determined (S101).

When a finger is inserted into the hand insertion portion 13 of the case cover 11, the detection sensor 17 detects the finger (S
(ON at 101), based on which the fan 32 of the blowing means 30 is driven (S102). At the same time, when the heater changeover switch is ON, the heating means 40 is energized to heat the air (S102).

When the fan 32 and the heater 40 are driven, the air blown to the blowing means 50 is
1 is blown out toward the finger in the hand insertion portion 13. At the start of drying of the fingers, the variable blowing mechanism 60 of the blowing means 50 is in an initial state in which the opening area of the blowing outlet 51 is the smallest as shown in FIG.

Therefore, although the blowing range of the air blown out from the blowing outlet 51 is narrow, the wind speed is high, so that even if a large amount of water adheres to the hand, the water can be blown off sufficiently. This eliminates the need for extra operations such as strongly rubbing hands, and can reduce the time required for drying.

Thereafter, when a predetermined time elapses, for example, 5 to 10 seconds (Y in S103), adjustment is made so that the opening area of the blower outlet 51 becomes larger. That is, the primary driving of the driving source 64 causes the movable member 61 in FIG.
It slightly swings counterclockwise about the pivot 62 (S104). In such an intermediate state, as shown in FIG. 7, the opening area of the blower outlet 51 is one step larger than the initial state.

After a lapse of a predetermined time (Y in S105), the secondary drive of the drive source 64 causes the blower outlet 5
The opening area of No. 1 is in a final state that is larger by another level (S1
06). As described above, since the opening area of the blower outlet 51 gradually expands through the intermediate state, the blowout range of the air becomes wider, and the wind speed becomes lower because the air volume is constant.

By this, when the drying of the fingers approaches the end, the entire hand can be exposed to the wind, so that the drying performance is good, and since the wind speed is low, the perceived temperature does not decrease, so that it is comfortable. A feeling of use can be obtained.

When the user pulls his hand out of the hand insertion section 13,
When the detection sensor 17 detects (OFF in S107), the power supply to the blowing means 30 and the heating means 40 is cut off (S10).
8), the operation of the hand dryer 10 ends. At this time, the drive source 64 returns to the initial state (S109).

As described above, according to the hand dryer 10, the opening area of the blower outlet 51 is changed by the variable blower mechanism 60 operatively controlled by the controller 70.
The air blowing range and the wind speed can be adjusted at least. Accordingly, both the high-speed type and the low-speed type of the conventional technology can be selectively realized with one hand dryer 10, and the advantages of each type can be achieved, and the problems can be solved. It becomes possible.

The operation of the hand dryer 10 will be additionally described. When the operation starts, external air is first taken into the front section 12 from the suction port 16 on the lower surface of the front section 12. Here, since the air sucked from the suction port 16 is warm air blown out from the blowing means 50,
The thermal efficiency is increased, and the power consumption when warming the air with the heating means 40 is reduced.

Since the suction port 16 faces downward in a substantially horizontal state, water that falls from above does not enter the suction port 16 against gravity. In addition, the air first passes through the filters 23 and 24 to remove foreign substances such as dust to some extent. Note that a water barrier plate may be provided inside the suction port 16 to repel water scattered during hand drying or device cleaning.

The air taken into the front part 12 from the suction port 16 flows up the ventilation path and flows to the upper end side of the apparatus main body 20 as shown by an arrow in FIG. Such air is supplied to the sponge filter 24 and the mesh filter 2.
3, the air is taken into the air blowing means 30 from the air suction port 22.

Since the sponge-like filter 24 is mounted so as to spread widely around the air suction port 22, the sponge-shaped filter 24 has a larger external surface area than the opening area of the air suction port 22, and the air is supplied from the entire outer surface area. Inhaled. The air sent downward by the blowing means 30 is heated by the heat generating means 40 and then reaches the blowing means 50 described above.

FIG. 8 shows a second embodiment of the present invention. In the present embodiment, the structure of the variable blowing mechanism 160 is as follows.
This is different from that of the first embodiment.

That is, the movable member 161 of the variable blowing mechanism 160 is, like the movable member 61,
The movable member 161 is disposed such that one long side 161 a thereof slides in the vertical width direction of the blower outlet 51. Have been.

More specifically, the support plate 1 extending in the lateral width direction like the movable member 161 is provided on the inner edge side of the blower outlet 51.
63 is attached. On this support plate 163,
A driving roller 164 and a driven roller 165 are rotatably supported on a shaft, and a belt member 166 is stretched between the rollers 164 and 165.

On the upper side of the belt member 166, the fastener 16
2, the movable member 161 is attached.
One long side 161a of the movable member 161 is
, And the one long side 161a is bent downward.

A drive source 64 (see FIG. 5) similar to that of the first embodiment is connected to the drive roller 164 directly or via a speed reduction mechanism not shown.
By appropriately rotating the drive roller 164 in the forward and reverse directions by the drive source 64, the movable member 161 can be slid and the opening area of the blower outlet 51 can be reduced and enlarged in the vertical width direction.

In this embodiment, as in the first embodiment, the control means 70 may be configured to automatically change the opening area of the blower outlet 51. According to the present embodiment, the movable member 161 can be supported in a more stable state.

FIGS. 9 and 10 show a third embodiment of the present invention. In the present embodiment, the variable blowing mechanism 26
The structure of 0 is different from those of the first and second embodiments.

That is, the variable blowing mechanism 260 has a drum 261 that covers the blowing outlet 51 in the width direction thereof, and a communication port 262 that penetrates the drum 261 in the cross-sectional diametric direction is provided in the drum axial direction. (The width direction of the blower outlet 51).

The ends 51 c of the blower outlets 51 facing each other in the vertical width direction are formed in an arc shape so as to match the outer peripheral shape of the drum 261. A drive source 64 similar to that of the first and second embodiments is connected to the rotating shaft 263 of the drum 261 directly or via a speed reduction mechanism (not shown).

By appropriately rotating the drum 261 in the forward and reverse directions by the driving source 64, the amount of the communication port 262 overlapping the inner edge of the blower outlet 51 can be adjusted. Thereby, the opening area of the blowing outlet 51 can be freely changed, and the air blowing range and the wind speed can be arbitrarily adjusted.

More specifically, as shown in FIG.
If the amount of the communication port 262 overlapping the inner edge side of the blower outlet 51 is increased, the opening area of the blower outlet 51 becomes smaller, so that the air blowing range is narrower and the wind speed is set faster. On the other hand, as shown in FIG. 10, if the amount of the communication port 262 of the drum 261 overlapping the inner edge side of the blower outlet 51 is reduced, the opening area of the blower outlet 51 increases, and the air blowout range becomes wider. And the wind speed is set slow.

In the present embodiment, as in the first and second embodiments, the opening area of the blower outlet 51 may be automatically changed by the control means 70.
According to the present embodiment, for example, even if the air volume is large and a strong wind pressure is applied to the drum 261, the drum 261 can be supported in a stronger and more stable state.

The hand dryer according to the present invention is not limited to the above-described embodiment. For example, although the movable member 61 and the movable member 161 are provided only on one side in the blower outlet 51, for example,
A pair may be provided in a state where they face each other within 1. Then, the adjustable range of the opening area of the blower outlet 51 can be expanded.

Adjusting the opening area of the blower outlet 51 in three stages is only an example. Adjustment may be made in stages, five stages, and so on. Further, the opening area of the blower outlet 51 may not be automatically changed with time by the control means 70, but may be manually adjusted according to the user's preference, for example.

The variable blowing mechanism 60 is set so that the air blowing range and the wind speed can be adjusted by changing the opening area of the blowing outlet 51. The direction of the air to be blown out may be arbitrarily adjusted according to the change of the opening area or completely. Furthermore, the air blowing outlet and the variable blowing mechanism may be applied to a hand drying device having no hand inserting portion as shown in FIG.

[0080]

According to the hand drying device of the present invention, the variable blowing mechanism of the blowing means can change the opening area of the blowing outlet to adjust the air blowing range and the wind speed. Reduce the opening area of the blower outlet,
If the air blowing range is narrowed and the wind speed is increased, a large amount of water attached to the hand can be blown off efficiently, and conversely, the opening area of the blower outlet is increased, so that the air blowing range is increased and the wind speed is increased. If you slow down, you can blow the wind over your entire hand over a wide area.

Accordingly, the drying performance is good, the drying does not take much time, and the user's sensible temperature can be prevented from lowering, so that a comfortable feeling of use can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view, partially broken away, showing a hand dryer according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway front view of the hand dryer according to the first embodiment of the present invention.

FIG. 3 is a partially enlarged sectional view showing a variable blowing mechanism of the hand dryer according to the first embodiment of the present invention.

FIG. 4 is a partially enlarged sectional view showing a variable blowing mechanism of the hand drying device according to the first embodiment of the present invention.

FIG. 5 is a block diagram showing control means of the hand dryer according to the first embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of the hand drying device according to the first embodiment of the present invention.

FIG. 7 is a graph illustrating a relationship between a change in an opening area of an air blowing outlet by a variable blowing mechanism of the hand dryer according to the first embodiment of the present invention, and a wind speed and a sensed temperature.

FIG. 8 is a partially enlarged side view showing a variable blowing mechanism of a hand dryer according to a second embodiment of the present invention.

FIG. 9 is a partially enlarged side view showing a variable blowing mechanism of a hand dryer according to a third embodiment of the present invention.

FIG. 10 is a partially enlarged side view showing a variable blowing mechanism of a hand drying device according to a third embodiment of the present invention.

FIG. 11 is a perspective view showing a conventional hand drying device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Hand drying device 11 ... Case cover 12 ... Front part 13 ... Hand insertion part 16 ... Suction port 17 ... Detection sensor 20 ... Device main body 21 ... Case lid part 22 ... Air supply port 30 ... Blowing means 31 ... Drive motor 32 ... Fan 40 ... Heating means 50 ... Blowing means 51 ... Blow-off outlet 51a ... Opening edge 51b ... Peripheral part 60 ... Variable blowing mechanism 61 ... Movable member 62 ... Pivot 63 ... Support plate 64 ... Drive source 70 ... Control means 160 ... Variable Blow-out mechanism 161 ... movable member 162 ... fastener 163 ... support plate 164 ... drive roller 165 ... driven roller 166 ... belt member 260 ... variable blowing mechanism 261 ... drum 262 ... communication port 263 ... rotating shaft

Claims (7)

[Claims] 1. A hand dryer comprising at least a blowing means and a blowing means for blowing out the blown air, wherein the blowing means comprises a blowing outlet and a variable blowing mechanism. The outlet is disposed so that air to be blown out passes, and the variable blowing mechanism is configured to be able to adjust at least an air blowing range and a wind speed by changing an opening area of the blowing outlet. Characteristic hand dryer. 2. A hand drying apparatus comprising: a case cover having a hand insertion portion; and a device body including at least a blowing means and a blowing means for blowing the blown air toward the inside of the hand insertion portion. The blowing means has a blower outlet and a variable blower mechanism, and the blower outlet is arranged at a position facing the inside of the hand insertion portion so that blown air passes therethrough, The hand drying device, wherein the mechanism is configured to be able to adjust at least an air blowing range and a wind speed by changing an opening area of the blowing outlet. 3. The variable blowing mechanism according to claim 1, further comprising a movable member that is displaceable in a longitudinal direction of the blower outlet along an inner edge of the blower outlet extending in a lateral direction of the blower outlet. 3. The hand dryer according to 1 or 2. 4. The movable member of the variable blowing mechanism is formed in a plate shape extending in a width direction along an inner edge of the air blowing outlet, and the movable member is formed through a pivot shaft extending in the width direction.
The hand dryer according to claim 3, wherein the mouth is pivotally supported on the inner edge side of the mouth. 5. The movable member of the variable blowing mechanism is formed in a plate shape extending in a lateral width direction along an inner edge of the blower outlet, and the movable member has one long side having a vertical width of the blower outlet. The hand dryer according to claim 3, wherein the hand dryer is slidably disposed in a direction from an inner edge side of the blower outlet. 6. The variable blowing mechanism has a drum that covers the blowing outlet in the lateral width direction, and has a communication port formed in the drum so as to extend in the direction of the axis of the drum. 3. The hand dryer according to claim 1, wherein the amount of the communication port overlapping the inner edge of the blower outlet can be adjusted by rotation of the drum. 7. The variable blowing mechanism, when the hand starts drying,
By reducing the opening area of the blowing outlet, narrowing the air blowing range and setting the wind speed fast, then increasing the opening area of the blowing outlet, widening the air blowing range and setting the wind speed slow. Claims 1, 2, 2,
7. The hand dryer according to 3, 4, 5 or 6.