JP5816804B2 - Hand dryer - Google Patents

Description

  The present invention relates to a hand-drying device for washing hands in a bathroom or a toilet and drying wet hands.

  A conventional hand dryer detects that a hand has been put in the drying chamber. High pressure air was blown from the high pressure air generator to dry the hands. A plurality of nozzles are accumulated in one area, and one area is mainly dried (for example, see Patent Document 1).

  The configuration will be described below with reference to FIGS. Upper and lower surfaces opposed to each other manually inserted by a high-pressure air generator 102 for generating a high-speed air flow provided in the box body in a hand drying chamber 101 having a size capable of storing a hand, which opens to the front and side surfaces of the box body Each of which is a hand-drying device 104 configured to eject a high-speed air flow from the nozzle 103 positioned therein, and the air blowing portions of at least the upper nozzle of the nozzle 103 are arranged in the left-right direction in the hand insertion portion. The nozzle hole row 105 and a second nozzle hole row 106 disposed on the entrance side of the manual insertion portion from the first nozzle hole row 105 are configured. Then, the attached water is blown and dried by blowing air from the first nozzle hole rows 105 and 106 toward the hand that has entered the hand drying chamber.

Japanese Patent Laid-Open No. 7-136078

  In such a conventional hand drying apparatus, drying by blowing air from the nozzle dries in the order from the wrist to the palm and then to the fingertip, and thus the drying of the wrist and palm that are first extracted from the drying chamber may be insufficient.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a hand-drying device that can reduce power consumption during a drying operation while satisfying the feeling of drying by the user.

In order to achieve the above object, the hand-sensing drying device of the present invention is provided with a main body that forms the outer shell of the device, a hand drying chamber that is provided in the box and opens at the top of the box, and is provided in the hand drying chamber. Hand detecting means for detecting insertion of a hand into the hand drying chamber, a high pressure air flow generating device provided in the box for generating a high pressure air flow, and an air supply path of the high pressure air flow generating device in the hand drying chamber A hand dryer equipped with a nozzle communicating with
The hand drying chamber is provided so as to insert a hand downward from an upper opening, and the nozzles are respectively disposed on two opposing surfaces on the front side and the back side of the hand drying chamber, The nozzles arranged on the front side and the back side of the drying chamber are respectively provided at two upper and lower positions, and the air flow rate from the nozzles provided above is higher than the air flow rate from the nozzles provided below. It is a larger one that achieves its intended purpose.

According to the present invention, a main body that forms an outline of the apparatus, a hand drying chamber that is provided in the box and opens at the top of the box, and a hand that is provided in the hand drying chamber and is inserted into the hand drying chamber Hand-drying means comprising: a hand-detecting means for detecting a high-pressure airflow that is provided in the box and generates a high-pressure airflow; and a nozzle that communicates with the air-feeding path of the high-pressure airflow generator in the hand-drying chamber. A device,
The hand drying chamber is provided so as to insert a hand downward from an upper opening, and the nozzles are respectively disposed on two opposing surfaces on the front side and the back side of the hand drying chamber, The nozzles arranged on the front side and the back side of the drying chamber are respectively provided at two upper and lower positions, and the air flow rate from the nozzles provided above is higher than the air flow rate from the nozzles provided below. It is an enlarged version that can eliminate uneven drying from the fingertip to the wrist, and also has the effect of reducing power consumption by reducing excessive power consumption by shortening the drying time and increasing the efficiency of the drying means. .

Sectional drawing which shows the structure of the hand-drying apparatus of Embodiment 1 of this invention. Sectional drawing which shows the structure of the hand-drying apparatus of Embodiment 1 of this invention. Sectional drawing which shows the structure of the hand-drying apparatus of Embodiment 1 of this invention. Sectional drawing which shows the structure of the hand-drying apparatus of Embodiment 2 of this invention. Sectional drawing which shows the structure of the hand-drying apparatus of Embodiment 3 of this invention. Sectional drawing which shows the structure of the hand-drying apparatus of Embodiment 4 of this invention. Sectional drawing which shows the structure of the hand-drying apparatus of Embodiment 5 of this invention. Detailed perspective view showing the configuration of a conventional hand dryer Detailed perspective view showing the configuration of a nozzle of a conventional hand dryer

According to the first aspect of the present invention, there is provided a main body that forms an outline of the apparatus, a hand drying chamber provided in the box and opened at an upper portion of the box, and a hand drying chamber provided in the hand drying chamber. A hand detecting means for detecting the insertion of the hand, a high pressure air flow generating device provided in the box for generating a high pressure air flow, and a nozzle communicating with the air supply path of the high pressure air flow generating device in the hand drying chamber. The hand-drying apparatus is provided, wherein the hand-drying chamber is provided so as to insert a hand downward from an upper opening, and the nozzle faces the front side and the back side of the hand-drying chamber. The nozzles respectively disposed on the surface and further disposed on the front side and the back side of the hand drying chamber are respectively provided at two upper and lower positions, and the air flow rate from the nozzles provided above is provided below. Further, it has a configuration in which it is larger than the amount of air blown from the nozzle.

  As a result, it is possible to simultaneously blow air to the fingertip and wrist or palm from a plurality of nozzles arranged in the vertical direction, and it is possible to dry the wrist and palm for a sufficient amount of time, and from the fingertip to the wrist There is an effect that unevenness of drying can be reduced.

Further , the nozzles are arranged so that the nozzles provided above are blown out downward.

  Thereby, it is possible to dry by flowing the water adhering to the wrist downward and moving it into the drying chamber, and it is possible to eliminate drying unevenness in the vicinity of the wrist.

In addition, the nozzles provided above are provided so that the angles directed downward are different at the front side and the back side.

  As a result, it is possible to simultaneously blow air to the fingertip and wrist or palm from a plurality of nozzles arranged in the vertical direction, and it is possible to dry the wrist and palm for a sufficient amount of time, and from the fingertip to the wrist There is an effect that unevenness of drying can be reduced.

Further, the hand detecting means is provided below the nozzles provided above, among the nozzles.

  Thereby, it can accelerate | stimulate that it reaches a nozzle below and dries, and there exists an effect that drying time can be shortened.

In addition, a plurality of the high-pressure airflow generation devices are provided, and the high-pressure airflow generation devices communicate with the respective nozzles through independent air supply paths.

  As a result, there is no difference in the blowing speed depending on the distance from the high-pressure airflow generation device to the nozzle, and variations in the wind speed blown from the nozzle can be suppressed, and the drying time can be shortened.

The high-pressure air flow generator may be configured to reduce the air volume of the high-pressure air flow generator connected to the lower nozzle after a lapse of a certain time after driving, and to reduce the wind speed blown from below.

  Thereby, in the second half of the hand-drying, there is an effect that energy is saved by mainly suppressing the blowing from the upper nozzle and blowing from the lower nozzle.

Also, the hand detection means, provided on the lower side than those provided above of the nozzle, when inserted hand is out of detection of said Teken detecting means, the high pressure air stream leading to lower nozzle It is characterized in that the air volume of the generator is reduced and the speed of air blown from below is reduced.

  Thereby, in the second half of the hand-drying, there is an effect that energy is saved by mainly suppressing the blowing from the upper nozzle and blowing from the lower nozzle.

Also characterized in that example Bei air volume distribution means to vary the air volume of the upper nozzle and lower nozzle to the gas feed path.

  Thereby, the air volume blown from the upper nozzle is made faster than the air volume blown from the lower nozzle, and the drying performance is improved, so that drying unevenness near the wrist can be eliminated.

The high-pressure air flow generator may increase the air volume blown from the upper nozzle by the air volume distribution means after a predetermined time has elapsed after driving.

  Thereby, in the second half of the hand-drying, there is an effect that energy is saved by mainly suppressing the blowing from the upper nozzle and blowing from the lower nozzle.

Also, the hand detection means, provided on the lower side than those provided above of the nozzle, when inserted hand is out of detection of said Teken detecting means, of the upper by the airflow distribution means nozzle The amount of air blown from the air is increased.

  Thereby, in the second half of the hand-drying, there is an effect that energy is saved by mainly suppressing the blowing from the upper nozzle and blowing from the lower nozzle.

The high-pressure airflow generation device stops blowing air from a lower nozzle by the air volume distribution means after a predetermined time has elapsed after driving.

  Thereby, in the second half of the hand-drying, there is an effect that energy is saved by mainly suppressing the blowing from the upper nozzle and blowing from the lower nozzle.

Moreover, the display means for alerting the user to start drawing the hand from the drying chamber is provided, and is displayed when the air blowing from the lower nozzle is stopped.

  Thereby, it is possible to prompt the user to stop the air blowing from the lower nozzle, and it is possible to prevent erroneous recognition of the specification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, a main body 1 that forms an outline of the apparatus, a hand drying chamber 2 that is provided in the box and opened at the upper portion of the box, and a hand drying chamber 2 that is provided in the hand drying chamber 2. Infrared sensor 3 as a hand detecting means for detecting hand insertion, a high pressure air flow generating device 4 provided in a box for generating a high pressure air flow, and the front facing the palm and back of the hand inserted into the hand drying chamber 2 A nozzle 5 that is disposed on each of the two surfaces on the side and the back side and communicates with the air supply path of the high-pressure airflow generation device 4; and a microcomputer 6 that drives the high-pressure airflow generation device 4 by inputting a signal from the infrared sensor 3 The hand drying apparatus is provided with a plurality of nozzles 5 in the vertical direction, and the interval between the nozzles 5 arranged at the uppermost and lowermost positions is 10 to 20 cm. That is, the interval between the nozzles 5 arranged at the uppermost and lowermost positions is at least 10 cm.

  In the above configuration, when the user puts the hand into the hand drying chamber 2, the infrared sensor 3 detects that the hand has entered the hand drying chamber 2 and sends a signal to the microcomputer 6. After confirming that the hand has entered the hand drying chamber 2, the microcomputer 6 drives the high-pressure air flow generator 4, sends air to the nozzle 5, and applies high-speed air toward the hand inserted into the hand drying chamber 2. Remove the water adhering to the hand and dry it.

The plurality of nozzles 5 provided in the vertical direction aim to dry the fingertips of the lower nozzles 5b provided in the lower direction, and the upper nozzles 5a provided in the upper direction dry the wrist from the palm. In view of the general length from the fingertip to the palm, the distance from the lower nozzle 5b located at the lowest position to the upper nozzle 5a located at the uppermost position is at least 10 cm apart.

  Here, assuming that one nozzle 5 is provided at each of the upper part and the lower part, the infrared sensor 3 detects a hand when a user puts the hand into the hand drying chamber 2 and sends a signal to the microcomputer 6. The high-pressure airflow generator 4 is driven and blows air toward the hand from the upper nozzle 5a and the lower nozzle 5b. The upper nozzle 5a mainly drys the wrist and palm by sending air to the wrist and palm, and the lower nozzle 5b located at least 10 cm away from the upper nozzle 5a mainly drys the fingertip. Thus, drying unevenness between the fingertip and the wrist can be reduced.

  In addition, as shown in FIG. 2, by providing the upper nozzle 5a to blow downward, it is possible to remove moisture adhering to the wrist and palm that cannot be removed by blowing from the nozzle. It can be moved in the fingertip direction. As a result, the moisture that could not be removed can be moved in the fingertip direction as it is gradually extracted from the hand drying chamber 2. Since the fingertip portion is in a state where moisture has been removed by blowing air from the lower nozzle 5b, the upper nozzle 5a has also been moved from the upper portion and the moisture that has not been removed is less adhered to the fingertip. It becomes easy to remove by blowing air from.

  Further, as shown in FIG. 3, since it is generally assumed that the insertion angle of the hand is inclined in the direction of the nozzle 5 on the front side, the angle of the nozzle 5 on the back side with respect to the angle of the nozzle 5 on the front side Tilt down more downward. For example, it is assumed that the hand insertion angle is inclined 20 degrees toward the front side in the vertical direction with respect to the ground. In this case, assuming that the nozzle is originally inclined 20 degrees downward, the hand insertion angle is added and air is blown toward the fingertip side by 40 degrees. If this is added, the air will be blown almost perpendicularly to the back of the hand, and moisture that could not be removed cannot be moved downward. For this reason, by installing the nozzle on the back side to be inclined 20 degrees more than the angle of the nozzle on the front side, even when there is a hand insertion angle, moisture that could not be removed can be sent to the fingertip side. become able to. Thereby, it is possible to prevent water adhering to the back side of the hand from flowing upward.

  In the present embodiment, the number of nozzles installed is two in the vertical direction and the infrared sensor is used as the hand detection means. However, the present invention is not limited to this as long as the same effect can be obtained.

  Further, although the nozzle angle is 20 degrees and the hand insertion angle is 20 degrees, the present invention is not limited to this as long as the same effect can be obtained.

(Embodiment 2)
Next, Embodiment 2 of the present invention will be described with reference to the drawings. In addition, the same thing as Embodiment 1 attaches | subjects the same number, and abbreviate | omits the detailed description.

  That is, as shown in FIG. 4, the infrared sensor 3 is provided below the upper nozzle 5a with respect to the first embodiment.

In the above configuration, when the user puts the hand into the hand drying chamber 2, the infrared sensor 3 detects that the hand has entered the hand drying chamber 2 and sends a signal to the microcomputer 6. After confirming that the hand has entered the hand drying chamber 2, the microcomputer 6 drives the high-pressure air flow generator 4, sends air to the nozzle 5, and applies high-speed air toward the hand inserted into the hand drying chamber 2. Remove the water adhering to the hand and dry it. At this time, when the infrared sensor 3 detects a hand, the hand is already in the upper nozzle 5a.
Since the fingertip has reached the lower nozzle 5b when starting blowing, the fingertip can be dried by blowing from the lower nozzle 5b. it can.

  Further, even when the hand is gradually extracted from the hand drying chamber 2, the infrared sensor 3 is positioned above the lower nozzle 5b, so that the high-pressure airflow is maintained even after the hand has disappeared from the drying region of the lower nozzle 5b. Since the generator 4 is driven and drying can be continued by blowing air from the upper nozzle 5a, a portion that is insufficiently dried can also be dried to the end by blowing air from the upper nozzle 5a.

(Embodiment 3)
Next, Embodiment 3 of the present invention will be described with reference to the drawings. In addition, the same thing as Embodiment 1 attaches | subjects the same number, and abbreviate | omits the detailed description.

  As shown in FIG. 5, it is set as the structure further provided with the high pressure airflow generator 4a and the high pressure airflow generator 4b with respect to Embodiment 1. FIG. The high pressure airflow generator 4a communicates with an air supply path connected to the lower nozzle 5b, and the high pressure airflow generator 4b communicates with an air supply path connected to the upper nozzle 5a.

  In the above configuration, when the user puts the hand into the hand drying chamber 2, the infrared sensor 3 detects that the hand has entered the hand drying chamber 2 and sends a signal to the microcomputer 6. After confirming that the hand has entered the hand drying chamber 2, the microcomputer 6 drives the high-pressure air flow generators 4 a and 4 b to send air to the upper nozzle 5 a and the lower nozzle 5 b and insert it into the hand drying chamber 2. Moisture attached to the hand is removed by applying high-speed air toward the hand and dried. Since the high-pressure airflow generator 4a is only sending air to the lower nozzle 5b and the high-pressure airflow generator 4b is only supplied to the upper nozzle 5a, the length of the air supply path between the high-pressure airflow generator 4 and the nozzle 5 is reduced. Therefore, it is possible to perform manual drying from all the nozzles 5 at the same wind speed.

  Further, when the high-pressure airflow generators 4a and 4b are driven and a certain time has elapsed, the air volume of the high-pressure airflow generator 4a is reduced or stopped. The fixed time is the time from the start of drying to the end of drying of the fingertip, and here, for example, 5 seconds. When the high-pressure airflow generators 4a and 4b are driven, the region from the fingertip to the wrist is dried. Since the high pressure airflow generator 4a has sufficiently dried the fingertips after 5 seconds after being driven, the hand is gradually pulled out of the hand drying chamber and is out of the air blowing area from the lower nozzle 5b. 4a is decelerated or stopped, and the hand is dried only by blowing air from the high-pressure airflow generator 4b.

  Further, in the configuration in which the infrared sensor 3 is provided below the upper nozzle 5a, the high-pressure airflow generators 4a and 4b are driven while the infrared sensor 3 is detecting the hand, and the infrared sensor 3 no longer detects the hand. At this time, the hand is gradually removed from the hand drying chamber and removed from the air blowing area from the lower nozzle 5b, and the high pressure air flow generator 4a is decelerated or stopped, and the hand is only blown by the high pressure air flow generator 4b. Dry. The high-pressure airflow generator 4b stops 3 seconds after the infrared sensor 3 stops detecting the hand.

  In this embodiment, two high-pressure airflow generators are installed, the time until the fingertips dry after driving the high-pressure airflow derivation device is 5 seconds, and the infrared sensor stops detecting the hand and stops the high-pressure airflow generator. Although the time to do is 3 seconds, it is not limited to this as long as the same effect can be obtained.

Further, in the above configuration, the output of the high-pressure airflow generator 4a is increased by increasing the airflow of the high-pressure airflow generator 4b relative to the high-pressure airflow generator 4a and increasing the airflow from the upper nozzle 5a than that of the lower nozzle 5b. Can be lowered. The air blow from the lower nozzle 5b mainly dries the fingertip, and the fingertip can be dried in less time than the wrist or palm. Therefore, it is possible to dry efficiently and efficiently by increasing the amount of air blown to the wrist or palm relative to the amount of air blown to the fingertip.

(Embodiment 4)
Next, a fourth embodiment of the present invention will be described with reference to the drawings. In addition, the same thing as Embodiment 1 attaches | subjects the same number, and abbreviate | omits the detailed description.

  As shown in FIG. 6, in addition to the first embodiment, the air supply path is further provided with a damper 7 as an air volume distribution means for changing the amount of air blown to the upper nozzle 5a and the lower nozzle 5b. .

  In the above configuration, when the user puts the hand into the hand drying chamber 2, the infrared sensor 3 detects that the hand has entered the hand drying chamber 2 and sends a signal to the microcomputer 6. After confirming that the hand has entered the hand drying chamber 2, the microcomputer 6 drives the high-pressure air flow generator 4, sends air to the nozzle 5, and applies high-speed air toward the hand inserted into the hand drying chamber 2. Remove the water adhering to the hand and dry it.

  The air blow from the lower nozzle 5b mainly dries the fingertip, and the fingertip can be dried in less time than the wrist or palm. Therefore, by adjusting the damper 7 and changing the ratio of the amount of air blown to the upper nozzle 5a and the lower nozzle 5b, the amount of air blown to the wrist or palm is made larger than the amount of air blown to the fingertip, thereby saving energy. And it can dry efficiently.

  Further, when the high-pressure airflow generator 4 is driven and a certain time has elapsed, the damper 7 is adjusted to reduce the air volume from the lower nozzle 5b or set the air volume to zero. The fixed time is the time from the start of drying to the end of drying of the fingertip, and here, for example, 5 seconds. When the high-pressure airflow generator 4 is driven, the region from the fingertip to the wrist is dried. Since the fingertip is sufficiently dried 5 seconds after the high-pressure airflow generator 4 is driven, the hand is gradually removed from the hand drying chamber and is removed from the air blowing area from the lower nozzle 5b, and the damper 7 is adjusted. Then, the air volume from the lower nozzle 5b is reduced or the air volume is reduced to zero, and the hand is dried only by the air from the upper nozzle 5a.

  Further, in the configuration in which the infrared sensor 3 is provided below the upper nozzle 5a, the high-pressure airflow generator 4 is driven while the infrared sensor 3 is detecting a hand, and the infrared sensor 3 stops detecting the hand. The hand is gradually pulled out of the hand drying chamber and is out of the air blowing area from the lower nozzle 5b, and the damper 7 is adjusted to reduce the air volume from the lower nozzle 5b or to reduce the air volume to zero. The hand is dried only by blowing air from the upper nozzle 5a. The high-pressure airflow generator 4 stops 3 seconds after the infrared sensor 3 stops detecting the hand.

  In this embodiment, the time until the fingertip dries after driving the high-pressure airflow derivation device is 5 seconds, and the time until the infrared sensor stops detecting the hand and stops the high-pressure airflow generation device is 3 seconds. The present invention is not limited to this as long as the same employment effect can be obtained.

(Embodiment 5)
Next, a fifth embodiment of the present invention will be described with reference to the drawings. In addition, the same thing as Embodiment 1 attaches | subjects the same number, and abbreviate | omits the detailed description.

As shown in FIG. 7, in addition to the first embodiment, LEDs as display means for the user
8 is provided.

  In the above configuration, the LED 8 is lit or blinked when the air blown from the lower nozzle 5b is decelerated or stopped, and the user can be encouraged to remove his / her hand from the hand drying chamber 2 and further malfunction. Can be avoided.

  For example, when the high-pressure airflow generator 4 is driven and a certain time has elapsed, the damper 7 is adjusted to reduce the air volume from the lower nozzle 5b or to set the air volume to zero. The fixed time is the time from the start of drying to the end of drying of the fingertip, and here, for example, 5 seconds. When the high-pressure airflow generation device 4 is driven, the region from the fingertip to the wrist is dried. Since the fingertip is sufficiently dried 5 seconds after the high-pressure airflow generator 4 is driven, the hand is gradually removed from the hand drying chamber and is removed from the air blowing area from the lower nozzle 5b, and the damper 7 is adjusted. Then, the air volume from the lower nozzle 5b is reduced or the air volume is reduced to zero, and the hand is dried only by the air from the upper nozzle 5a. At this time, the LED 8 is turned on or blinked to prompt the user to finish the drying of the fingertip portion, and the hand is gradually removed from the hand drying chamber 2.

  In this embodiment, the time until the fingertip dries after driving the high-pressure airflow derivation device is 5 seconds, and the time until the infrared sensor stops detecting the hand and stops the high-pressure airflow generation device is 3 seconds. The present invention is not limited to this as long as the same employment effect can be obtained.

  Moreover, although LED was used as a display means, if the same adoption effect is acquired, it will not restrict to this.

  As described above, the hand drying device of the present invention can be applied to a drying device that blows water droplets using high-speed air to dry hands and clothes, and an air blowing device that blows dust and the like.

DESCRIPTION OF SYMBOLS 1 Main body 2 Hand drying room 3 Infrared sensor 4 High pressure airflow generator 4a High pressure airflow generator 4b High pressure airflow generator 5a Upper nozzle 5b Lower nozzle 6 Microcomputer 7 Damper 8 LED
101 Hand Drying Room 102 High Pressure Air Generator 103 Nozzle 104 Hand Dryer 105 First Nozzle Hole Row 106 Second Nozzle Hole Row

Claims (12)

A main body that forms the outline of the device;
A hand drying chamber provided in the box and opened at the top of the box;
Hand detecting means provided in the hand drying chamber for detecting insertion of a hand into the hand drying chamber;
A high-pressure airflow generating device that is provided in the box and generates a high-pressure airflow;
A hand dryer provided with a nozzle communicating with an air supply path of the high-pressure airflow generator in the hand dryer;
The hand drying chamber is provided so as to insert a hand downward from the upper opening,
The nozzles are respectively disposed on two opposite surfaces on the front side and the back side of the hand drying chamber,
Furthermore, the nozzles arranged on the near side and the far side of the hand drying chamber are respectively provided at two locations above and below,
The hand dryer which made the ventilation volume from the said nozzle provided above larger than the ventilation volume from the said nozzle provided below. The hand-drying device according to claim 1, wherein the nozzle is arranged so that the nozzle provided above is blown out downward. The hand-drying device according to claim 2, wherein, among the nozzles provided above, an angle directed downward is provided so as to be different from the front side and the back side. The hand dryer according to claim 1, wherein the hand detection unit is provided below the nozzle provided above. The hand-drying device according to claim 1, wherein a plurality of the high-pressure airflow generation devices are provided, and the high-pressure airflow generation devices communicate with the nozzles through independent air supply paths. 6. The hand according to claim 5, wherein after a certain period of time has elapsed after the high-pressure airflow generating device has been driven, the air volume of the high-pressure airflow generating device connected to the lower nozzle is reduced, and the wind speed blown from below is reduced. Drying equipment. The hand detection means is provided on the lower side of the nozzle provided above,
6. The method according to claim 5, wherein when the inserted hand deviates from the detection of the hand detection means, the air volume of the high-pressure air flow generator connected to the lower nozzle is reduced, and the wind speed blown from below is reduced. Hand drying equipment. The hand dryer according to claim 1, further comprising an air volume distribution means for changing an air flow rate to the upper nozzle and the lower nozzle in the air supply path. 9. The hand drying apparatus according to claim 8, wherein the air volume blown from the upper nozzle is increased by the air volume distributing means after a lapse of a predetermined time after the high pressure air flow generator is driven. The hand detection means is provided on the lower side of the nozzle provided above,
9. The hand dryer according to claim 8, wherein when the inserted hand deviates from the detection of the hand detection means, the air volume to be blown from the upper nozzle is increased by the air volume distribution means. The hand dryer according to claim 8, wherein after a certain time has elapsed after the high-pressure airflow generator has been driven, the air volume distribution unit stops blowing air from the lower nozzle. The hand drying apparatus according to claim 9, further comprising display means for prompting the user to start drawing a hand from the drying chamber, and displaying when stopping air blowing from the lower nozzle.

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