JP2013158625A - Hand dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand dryer which dries hands inserted in the body inside of a box body by blowing an air current at a high speed to the box body inside, the hand dryer capable of performing operations without futility at an appropriate wind velocity.SOLUTION: In a hand dryer, a hand dryer body has a distance detection means 9, a distance to each part of a hand, which is opposite to the distance detection means 9, is evaluated stepwise by an evaluation means 14, a wind velocity control means 10 switches a plurality of sets of nozzles according to "near", "far", and "no detection" of an evaluation result, and a wind velocity is increased for "near" and decreased for "far". In a part where no hand is detected, the hand dryer is controlled not to blow off air from the nozzle.

Description

  The present invention relates to a hand-drying device that applies air to a wet hand after washing to dry the hand.

  Conventionally, this type of hand-drying device is known to dry hands by inserting a hand into the box body and sending an air flow toward the inside of the box at high speed (for example, Patent Documents). 1).

JP-A-11-178744

  In the conventional hand drying apparatus, there is a case where wind blows out even in a portion where no hand is detected. Moreover, since it spouted with the same wind speed irrespective of distance, it was not able to dry efficiently.

  Therefore, the present invention solves the above-described conventional problems, evaluates the distance between each part of the hand facing the distance detection means and a preset reference, and determines the wind speed according to the evaluation result, An object of the present invention is to provide a hand-drying device that controls the wind speed according to the distance, operates efficiently at an appropriate wind speed, and can dry efficiently.

  In order to achieve this object, the present invention provides a drying chamber in which a hand can be inserted / removed from an insertion opening that opens toward the top, a water receiving portion at the bottom of the drying chamber, and air to the drying chamber. The longitudinal direction of the insertion port is composed of a blowing means, a first nozzle whose speed is increased by reducing the opening, and a second nozzle whose speed of wind is made slower than that of the first nozzle by increasing the opening. A plurality of nozzles arranged to face the surface of the hand, and a plurality of nozzles for ejecting air to the inserted hand, and each hand inserted in the drying chamber by being arranged in accordance with the plurality of nozzles A distance detection means for detecting the distance to each part, a distance determination section for evaluating the distance obtained from the distance detection means in stages, and a wind speed of air jetted into the drying chamber by switching each of the plurality of nozzles Wind speed control means for controlling The distance determining section is obtained by a hand drying apparatus having a the wind speed control unit for driving the wind speed control means based on the evaluation of thereby is to achieve the intended purpose.

  According to the present invention, it is provided with a distance determination unit that determines the distance between the hand inserted into the hand dryer main body and the front and back of the main body, and the distance determination unit evaluates the distance step by step at the start of operation, By determining the wind speed according to, the wind speed is controlled according to the distance, and there is an effect that there is no waste, operation is performed at an appropriate wind speed, drying is performed efficiently, and the momentum of water droplet scattering is reduced.

The figure which shows the structure of the hand-drying apparatus of embodiment of this invention. The block diagram which shows the structure of the hand-drying apparatus of the embodiment The figure which shows the operation | movement of the wind speed control means of the hand-drying apparatus of the embodiment ((a) The figure which shows the operation | movement which reduces a wind speed, (b) The figure which shows the operation | movement which increases a wind speed, (c) When not blowing Diagram showing operation)

  The hand-drying device according to claim 1 of the present invention is a drying chamber in which a hand can be inserted and removed from an insertion opening that opens toward the top, a water receiving portion at the bottom of the drying chamber, and a blower that sends air to the drying chamber. Means, a first nozzle that increases the wind speed by reducing the opening, and a second nozzle that increases the opening to make the wind speed slower than the first nozzle, and is arranged in the longitudinal direction of the insertion port. A plurality of sets of nozzles arranged to face the surface and ejecting air to the inserted hand, and each part of the hand inserted in the drying chamber arranged in accordance with the plurality of sets of nozzles The distance detection means for detecting the distance between the distance detection means, the distance determination section for evaluating the distance obtained from the distance detection means stepwise, and the plurality of sets of nozzles are respectively switched to change the wind speed of the air jetted into the drying chamber. Wind speed control means for controlling, and the distance And it has a configuration in which a wind speed controller which drives the wind speed control means based on the evaluation of the determination unit.

  Thus, when the hand is inserted, the distance detection unit detects the distance to each part of the hand, and the distance determination unit evaluates the distance from each part of the hand facing the distance detection unit step by step. The wind speed control unit drives the air blowing unit and drives the wind speed control unit based on the evaluation of the distance determination unit, and the wind speed control unit switches between the first nozzle and the second nozzle in a plurality of nozzles. Since the wind speed is controlled by each of the above, there is no waste, and it is possible to operate at an appropriate wind speed, to dry efficiently, and to reduce the momentum of water droplet scattering.

  In addition, the distance determination unit compares the distance between each part of the hand facing the distance detection means and a preset reference, and the result is divided into three steps: “near”, “far”, and “no detection”. When the evaluation result is “near” by the wind speed control unit, the wind speed is slowed down by closing the plurality of first nozzles and opening the second nozzles. In the case of "no detection", the wind speed is increased by opening the plurality of sets of first nozzles and closing the second nozzle, and in the case of "no detection", the plurality of sets of first nozzles and second nozzles. By closing the nozzle, the wind speed control means is driven so as not to blow air from the nozzle.

  As a result, the evaluation means compares the distance between each part of the inserted hand and a preset reference, evaluates the evaluation results as “near”, “far”, and “no detection”. Since the wind speed control means controls the wind speed accordingly, the wind speed is increased when the distance between each part of the inserted hand and the distance detection means corresponding thereto is close, and the wind speed is decreased when the distance is long, In the part where the hand is not detected, by not sending the wind, there is no waste, it is possible to operate at an appropriate wind speed, to dry efficiently, and to reduce the momentum of water droplet scattering.

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

(Embodiment 1)
FIG. 1 is a diagram illustrating a configuration of a hand dryer according to an embodiment of the present invention.

  As shown in FIG. 1, the hand drying apparatus main body 1 includes an insertion port 2 that opens toward the top and a drying chamber 3 in which a hand can be inserted and removed. At the bottom of the drying chamber 3, a water receiving portion 4 that receives water scattered in the drying chamber 3 is provided. An electric blower 5 serving as a blowing means for sending air is disposed inside the hand dryer main body 1 and a plurality of sets are arranged in the insertion port 2 so as to face the longitudinal direction, and air is introduced into the inserted hand. A nozzle 6 for jetting is provided.

  The nozzle 6 includes a first nozzle 7 that increases the wind speed by reducing the opening, and a second nozzle that is disposed below the first nozzle 7 by decreasing the wind speed than the first nozzle 7 by increasing the opening. Nozzle 8. Further, distance detection means 9 for detecting the distance from each part of the hand inserted into the insertion port 2 is arranged in accordance with the nozzle 6. Furthermore, the wind speed control means 10 which switches according to each of the nozzles 6 and controls the wind speed of the air which blows into the drying chamber 3 is arrange | positioned.

  The wind speed control means 10 evaluates the distance between each part of the inserted hand and the distance detection means 9 and a preset reference, and the results are classified into three steps: “near”, “far” and “no detection”. The electric blower 5 is driven in accordance with this evaluation, and the wind speed is controlled by switching between the first nozzle 7 and the second nozzle 8.

  The distance detection means 9 transmits an ultrasonic wave from the sensor head, for example, by an ultrasonic sensor, and receives again the ultrasonic wave reflected by the hand (only the portion facing each sensor) by the sensor head. The distance between the hand and the sensor head is measured by measuring the time from transmission to reception.

  FIG. 2 is a block diagram showing the configuration of the hand dryer in the embodiment of the present invention.

  As shown in FIG. 2, the control unit 13 includes a distance determination unit 11 that determines the distance based on information obtained from the distance detection unit 9, and a wind speed control unit that drives the wind speed control unit 10 based on the result of the distance determination unit 11. 12.

  The distance determination unit 11 evaluates the distance between each part of the hand facing the distance detection means 9 and a preset reference, and the results are classified into three stages: “near”, “far”, and “no detection”. Evaluation means 14 for evaluation is provided.

  Further, the wind speed control unit 12 drives the wind speed control means 10 based on the evaluation result of the evaluation means 14. The wind speed control means 10 includes a shutter plate 15 and a motor that slides the shutter plate 15 up and down. The wind speed is controlled based on the evaluation result of the evaluation means 14.

  FIG. 3 is a diagram showing the operation of the wind speed control means of the hand dryer in the embodiment of the present invention.

  As shown in FIG. 3, the wind speed control means 10 includes two first nozzles 7 that increase the wind speed by reducing the opening, and a second that decreases the wind speed by increasing the opening than the first nozzle 7. One nozzle 8 is arranged together. As shown in FIG. 3A, in the case of “near”, by sliding the shutter plate 15 upward, the first nozzle 7 is closed and the second nozzle 8 is opened to slow down the wind speed. Is. Also, as shown in FIG. 3B, in the case of “far”, by sliding the shutter plate 15 downward, the first nozzle 7 is opened and the second nozzle 8 is closed, so that the wind speed is increased. It's what makes it faster. Further, as shown in FIG. 3C, in the case of “no detection”, the first nozzle 7 and the second nozzle 8 are closed without sliding the shutter plate 15.

  According to such a configuration, when the hand is inserted, the distance detection unit 9 detects the distance to each part of the hand, and the distance determination unit 11 detects each part of the hand that faces the distance detection unit 9. The evaluation means 14 evaluates the distance between each part of the inserted hand and the distance detection means 9 and a preset reference, and the evaluation results are “near”, “far”, “no detection”. The wind speed control unit 12 drives the electric blower 5 and also drives the wind speed control means 10 based on the evaluation of the distance determination unit 11, and the first nozzle 7 and the second nozzle. In order to control the wind speed by switching 8, it is possible to operate at an appropriate wind speed, to dry efficiently, and to reduce the momentum of water droplet scattering.

  Even when the inserted hand and the nozzle are parallel, the palm is uneven.

  For example, the swollen part under the thumb and palm thumb is closer to the nozzle than the other parts. Therefore, when the evaluation means 14 determines that it is “near” and slides the shutter plate 15 as the wind speed control means 10 upward, the first nozzle 7 is closed and the second nozzle 8 is opened. Can slow down.

  The other part is far from the nozzle. Therefore, when the evaluation means 14 determines that it is “far” and slides the shutter plate 15 downward, the first nozzle 7 is opened and the second nozzle 8 is closed, so that the wind speed can be increased. .

  That is, it can blow according to the shape of the hand.

  Moreover, since the size of the hand varies from person to person, a portion that is not detected appears. In the case of no detection, the shutter plate 15 is not switched and the nozzle 6 is kept closed, so that air can be prevented from being blown out from the nozzle 6 and the effect of drying without waste is produced.

  As described above, the distance between each part of the inserted hand is compared with a preset reference, and the wind speed is controlled according to the evaluation results of “near”, “far”, and “no detection”. There is no effect, driving at an appropriate wind speed, drying efficiently, and reducing the momentum of water droplets.

  In the present embodiment, an ultrasonic sensor is provided as the distance detecting means 9, but an infrared sensor or a thermopile may be used.

  The hand drying device according to the present invention controls the driving wind speed according to the distance between the inserted hand and the main body, and as a hand drying device for washing hands in a bathroom or toilet and drying wet hands. Useful.

DESCRIPTION OF SYMBOLS 1 Hand dryer main body 2 Insertion port 3 Drying chamber 4 Water receiving part 5 Electric blower 6 Nozzle 7 1st nozzle 8 2nd nozzle 9 Distance detection means 10 Wind speed control means 11 Distance determination part 12 Wind speed control part 13 Control part 14 Evaluation means 15 Shutter plate

Claims (2)

  The drying chamber in which the hand can be inserted and removed from the insertion opening opened toward the top, the water receiving portion at the bottom of the drying chamber, the blowing means for sending air to the drying chamber, and the wind speed was increased by reducing the opening. Consists of a first nozzle and a second nozzle whose air velocity is made slower than that of the first nozzle by enlarging the opening, and a plurality of sets are arranged facing the longitudinal surface of the insertion port, and inserted. A plurality of sets of nozzles for ejecting air to the hand, and distance detection means arranged to match the plurality of sets of nozzles to detect the distance between each part of the hand inserted into the drying chamber; and Evaluation of the distance determination unit that evaluates the distance obtained from the distance detection unit stepwise, the wind speed control unit that controls the wind speed of the air that is jetted into the drying chamber by switching the plurality of nozzles, and the distance determination unit Based on the wind speed control Hand drying apparatus that includes a wind speed control section for driving the stage.   The distance determination unit compares the distance between each part of the hand facing the distance detection means and a preset reference, and evaluates the result in three stages: “near”, “far”, and “no detection”. When the evaluation result is "near" by the wind speed control unit, the plurality of sets of first nozzles are closed and the second nozzles are opened to slow down the wind speed, and "far" In this case, the plurality of sets of the first nozzles and the second nozzles are opened by opening the plurality of sets of first nozzles and closing the second nozzles. The hand dryer according to claim 1, wherein the wind speed control means is driven so as not to blow air from the nozzle by closing the.

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