JP2014200514A - Hand dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand dryer enabling a manager or the like to know before a blade in a high-pressure air flow generator reaches use limit.SOLUTION: A hand dryer 1 includes: a box body 2; a hand drying room 3 provided inside the box body 2 and having an opening to insert the hand into; a high-pressure air flow generator 4 provided inside the box body 2 and generating high-pressure air; a nozzle blowing out high-pressure air generated by the high-pressure air flow generator 4 into the hand drying room 3; and a control part for controlling the high-pressure air flow generator 4. The control part includes: a storage part of storing a drive frequency of the high-pressure air flow generator 4; and a determination part for determining whether a drive frequency of the high-pressure air flow generator 4, stored in the storage part reaches or not a previously set drive frequency threshold value of the high-pressure air flow generator 4.

Description

  The present invention relates to a hand dryer for drying wet hands after washing.

  The hand-drying device dries wet hands after washing hands, and dust such as paper towels after wiping hands after drying does not occur. For this reason, it is increasingly installed in public toilets as a substitute for paper towels.

  In Patent Document 1, “a drying processing space formed so that a hand can be inserted and removed from above and from the side, an outer box, a high-pressure airflow generating device that generates high-pressure air, and the generation of the high-pressure airflow” And a nozzle that converts the high-pressure air supplied from the apparatus into a high-speed air flow and jets the high-speed air flow downward with respect to a hand inserted in the drying processing space. Is disclosed.

JP 2012-61247 A (Claim 1)

  The conventional hand drying apparatus as described in Patent Document 1 blows off water droplets adhering to the hand with a high-pressure air flow to dry the hand. This high-pressure airflow is generated by rotating blades provided in the high-pressure airflow generator at high speed with a motor (such as a DC brushless motor or a commutator motor) provided in the high-pressure airflow generator.

  As described above, the hand dryer is often installed in a public toilet or the like, and is used by many users. Since many hand dryers are used, the blades and the motor in the high-pressure airflow generator are subjected to a heavy load due to repeated rotation and stop operations and high-speed rotation itself. Accordingly, the blades in the high-pressure airflow generator are consumed (fatigue) by continuous use of the hand dryer, and eventually reach the use limit. Thus, when the vane reaches the service limit, it is necessary to replace the high-pressure airflow generator.

  However, the conventional hand dryer as described in Patent Document 1 detects the abnormality even when the blades in the high-pressure airflow generator mounted on the hand dryer reach the use limit. It was not possible to confirm that the blade had reached the service limit unless it was stopped. For this reason, after the administrator of the hand dryer recognizes the stop of the hand dryer, prepare to replace the high-pressure airflow generator, finish the replacement, and restart the high-pressure airflow generator During this time, the user could not use the hand dryer and was very inconvenient.

  In addition, the administrator of the hand dryer cannot grasp how much time remains until the high-pressure airflow generator reaches the use limit. For this reason, it is difficult for the administrator to set the replacement time of the high-pressure airflow generator, which is troublesome.

  The present invention has been made against the background of the above problems, and provides a hand-drying device that allows an administrator or the like to grasp that before the blades of the high-pressure airflow generator reach the use limit. To do.

  A hand drying device according to the present invention is provided inside a box, a hand drying chamber provided with an opening into which the hand is inserted, and inside the box, and generates high-pressure air. A control unit that controls the high-pressure airflow generator; a high-pressure airflow generator; a nozzle that ejects high-pressure air generated by the high-pressure airflow generator into the hand drying chamber; Is a storage unit that stores the number of operations of the high-pressure airflow generator, and the number of operations of the high-pressure airflow generator stored in the storage unit is a predetermined number of operations threshold value of the high-pressure airflow generator. And a determination unit that determines whether or not it has been reached.

  According to the present invention, the determination unit reaches the operation frequency threshold value by setting the operation frequency threshold value of the high-pressure air flow generation device slightly lower than the operation frequency required to replace the high-pressure air flow generation device. By determining that, it is possible for an external administrator or the like to grasp that it is time to replace the high-pressure airflow generator. For this reason, since the preparation for replacement of the high-pressure airflow generator can be made before the high-pressure airflow generator stops, the high-pressure airflow generator can be quickly replaced. Therefore, inconvenience for the user while exchanging the high-pressure airflow generator can be reduced.

It is side surface sectional drawing which shows the hand-drying apparatus 1 which concerns on Embodiment 1. FIG. It is a front view which shows the hand-drying apparatus 1 which concerns on Embodiment 1 which removed the front cover. 3 is a side cross-sectional view showing high-pressure airflow generator 4 in Embodiment 1. FIG. 3 is a block diagram showing a control unit 21 in the first embodiment. FIG. FIG. 6 is a block diagram showing a control unit 21 in a modification of the first embodiment. It is a front view which shows the hand-drying apparatus 1 which concerns on Embodiment 2 which removed the front cover. FIG. 6 is a block diagram showing a control unit 21 in a second embodiment. It is a figure which shows the remaining frequency | count until it reaches | attains the driving frequency threshold value in Embodiment 2. FIG.

  Hereinafter, an embodiment of a hand dryer according to the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Moreover, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one. Further, in the following description, terms for indicating directions (for example, “up”, “down”, “right”, “left”, “front”, “back”, etc.) are used as appropriate for easy understanding. This is for explanation and these terms do not limit the present invention.

Embodiment 1 FIG.
FIG. 1 is a side sectional view showing the hand drying device 1 according to the first embodiment, and FIG. 2 is a front view showing the hand drying device 1 according to the first embodiment with the front cover 16 removed. The hand dryer 1 will be described with reference to FIGS. As shown in FIGS. 1 and 2, the hand dryer 1 is provided with an opening in the upper part of a box 2 that forms an outline of the hand dryer 1. The opening is composed of an upper opening 7a located at the top of the box 2 and side openings 7b located on both sides of the box 2, and these upper openings 7a and the side Each of the openings 7b communicates with each other and is a continuous opening. The upper part of the box 2 is a hand that is a space that covers the entire inserted hand after the user of the hand drying device 1 inserts the hand from the upper opening 7a and the side opening 7b. A drying chamber 3 is provided. This hand drying chamber 3 can insert and remove a user's hand freely. The hand drying chamber 3 has a U-shaped cross section in a side view, and is slightly inclined from the front side to the back side as it goes from the upper part to the lower part in the hand drying chamber 3.

  As described above, the hand drying chamber 3 has a U-shaped cross section, and the front side wall surface 3a that is the inner wall on the front side and the rear side wall surface 3b that is the inner wall on the back side face each other. The surface of the front side wall surface 3a and the back side wall surface 3b is provided with a water-repellent coating such as silicon or fluorine, or a hydrophilic coating such as titanium oxide. Moreover, these front side wall surfaces 3a and back side wall surfaces 3b are made of a resin impregnated with an antibacterial agent. For this reason, while suppressing that the dirt adheres to the front side wall surface 3a and the back side wall surface 3b of the hand drying chamber 3, it is possible to reduce the growth of bacteria.

  In the hand drying chamber 3, a front side nozzle 5a is provided in the vicinity of the upper opening 7a in the front side wall surface 3a, and a rear side nozzle 5b is provided in the vicinity of the upper opening 7a in the rear side wall surface 3b. Is provided. A plurality of these front-side nozzles 5 a and back-side nozzles 5 b are installed linearly in the width direction of the hand drying chamber 3. The front-side nozzle 5a and the back-side nozzle 5b have their tips inclined slightly downward from the horizontal direction, and high-speed air ejected from the front-side nozzle 5a and the back-side nozzle 5b is generated in the hand drying chamber 3. It goes to the lower part (back side). Thereby, for example, the high-speed air ejected from the front side nozzle 5a hits the palm inserted into the hand drying chamber 3 and blows away water droplets adhering to the palm side, and at the same time, the high-speed air ejected from the back side nozzle 5b Then, it hits the back of the hand inserted into the hand drying chamber 3 and blows away the water droplets adhering to the back of the hand. The high-speed air ejected from the front-side nozzle 5a can blow off water droplets on the back of the hand, and the high-speed air ejected from the back-side nozzle 5b can blow off water droplets on the palm side.

  In the hand drying chamber 3, an upper hand detection sensor (light emitting side) 6a that emits light for detecting the presence or absence of a hand is installed below the back side nozzle 5b on the back side wall surface 3b. Then, the hand detection sensor (light receiving side) 6c that receives the light emitted from the upper hand detection sensor (light emitting side) 6a and reflected by the front side wall surface 3a or the hand inserted into the hand drying chamber 3 is detected by the upper hand detection. It is provided integrally with the sensor (light emitting side) 6a. The light emitted from the upper hand detection sensor (light emitting side) 6a reaches the front side wall surface 3a when the hand is not inserted in the hand drying chamber 3, and is reflected by the front side wall surface 3a. The detection sensor (light receiving side) 6c receives light. On the other hand, when a hand is inserted in the hand drying chamber 3, the light emitted from the upper hand detection sensor (light emitting side) 6a hits the hand and is reflected by the hand, and the reflected light is reflected by the hand detection sensor (light receiving). Side) 6c receives light.

  That is, the light emitted from the upper hand detection sensor (light emitting side) 6a is reflected when the hand is inserted in the hand drying chamber 3 than when the hand is not inserted in the hand drying chamber 3. Since the distance until the hand detection sensor (light receiving side) 6c receives light is short, the energy of the reflected light is strong. Whether or not a hand is inserted into the hand drying chamber 3 is determined based on the light reception level of the reflected light received by the hand detection sensor (light receiving side) 6c. Thus, the upper hand detection sensor (light emitting side) 6a and the hand detection sensor (light receiving side) 6c constitute a pair of reflective sensors.

  In the hand drying chamber 3, a back side hand detection sensor (light emitting side) 6b that emits light for detecting the presence or absence of a hand is installed below the front side wall surface 3a. The emission direction of the light emitted from the back side hand detection sensor (light emission side) 6b is directed to the hand detection sensor (light reception side) 6c, and this light is received by the hand detection sensor (light reception side) 6c. To do. The light emitted from the back side hand detection sensor (light emitting side) 6b reaches the hand detection sensor (light receiving side) 6c as it is when no hand is inserted in the hand drying chamber 3, and the hand detection sensor (light receiving side) 6c. Receive light. On the other hand, when the hand is inserted in the hand drying chamber 3, the light emitted from the back side hand detection sensor (light emitting side) 6b is blocked by the hand, so that it is difficult to reach the hand detection sensor (light receiving side) 6c. . Whether this hand detection sensor (light receiving side) 6c receives light emitted from the back side hand detection sensor (light emitting side) 6b determines whether or not a hand is inserted in the hand drying chamber 3. Yes. Thus, the back side hand detection sensor (light emitting side) 6b and the hand detection sensor (light receiving side) 6c constitute a pair of transmission type sensors.

  An upper hand detection sensor (light emitting side) 6a is installed on the upper portion of the front side wall surface 3a, and the light emitted from the upper hand detection sensor (light emitting side) 6a is received by the hand detection sensor (light receiving side) 6c. You may make it do. In this case, the upper hand detection sensor (light emitting side) 6a and the hand detection sensor (light receiving side) 6c constitute a pair of transmission sensors. In this case, the position of the hand detection sensor (light receiving side) 6c on the back side wall surface 3b is near the center in the vertical direction of the upper hand detection sensor (light emission side) 6a and the back side hand detection sensor (light emission side) 6b, and It can be installed at a position where the distance from the upper hand detection sensor (light emission side) 6a and the distance from the rear hand detection sensor (light emission side) 6b are substantially equal.

  Further, a drain port (not shown) for draining water in the hand dryer chamber 3 is provided at the bottom of the hand dryer chamber 3, and a drain channel 15 extending in the vertical direction of the box 2 is provided at the drain port. The upper end of is attached. A tank 14 is connected to the lower end of the drainage channel 15. The tank 14 collects water drained through the drainage channel 15 and is detachably attached to the bottom of the box 2.

  Inside the box 2, a high-pressure air flow generator 4 that generates high-pressure air is installed below the hand drying chamber 3. As shown in FIG. 3, the high-pressure airflow generator 4 includes blades 4a and a DC brushless motor 4b. The DC brushless motor 4b may be a commutator motor. The high-pressure airflow generator 4 increases the pressure of air by rotating the blades 4a with a DC brushless motor 4b. Then, the air whose pressure has been increased by the high-pressure airflow generator 4 is discharged into an exhaust chamber 8 provided above the high-pressure airflow generator 4. An exhaust port 9 for exhausting the air in the exhaust chamber 8 is provided in the upper part of the exhaust chamber 8, and an exhaust duct is provided in the box 2 further above the exhaust port 9. . The exhaust duct passes through the front side of the front side wall surface 3 a of the hand drying chamber 3, while passing through the front side exhaust duct 10 a extending upward from the exhaust port 9 and the rear side wall surface 3 b of the hand drying chamber 3. However, it is divided into a back side exhaust duct 10b extending upward from the exhaust port 9.

  Among these, the front side exhaust duct 10a is connected to the front side nozzle 5a at the upper end portion, and the back side exhaust duct 10b is connected to the rear side nozzle 5b at the upper end portion. Thereby, the high-pressure air discharged from the high-pressure airflow generator 4 passes through the exhaust chamber 8, the exhaust port 9 and the front-side exhaust duct 10a, and is converted into high-speed air by the front-side nozzle 5a. It is ejected from the front side nozzle 5a into the hand drying chamber 3. The high-pressure air discharged from the high-pressure air flow generator 4 passes through the exhaust chamber 8, the exhaust port 9, and the back-side exhaust duct 10b, and is converted into high-speed air by the back-side nozzle 5b. It is ejected into the hand drying chamber 3 from the side nozzle 5b.

  On the intake side of the high-pressure airflow generator 4, the opening at the upper end of the intake duct 11 extending in the vertical direction of the box 2 is connected to the high-pressure airflow generator 4. A sound absorbing material is attached to the inner wall of the intake duct 11 in order to reduce noise generated from the high-pressure airflow generator 4. The lower end portion of the intake duct 11 extends to the bottom portion of the box body 2 and serves as an intake port 12 opened at the bottom portion of the box body 2. An air filter 13 is detachably attached to the inlet of the intake port 12. A front cover 16 is attached to the front surface of the box 2.

  Next, the usage method of the hand dryer 1 is demonstrated. A user of the hand dryer 1 stands on the front side of the hand dryer 1 and extends a hand from the side openings 7b provided on both sides of the hand dryer 1 with the user's arm extended downward. Each wet hand is inserted into the drying chamber 3. In the hand drying chamber 3, when both hands are brought closer to the center of the hand drying chamber 3, both arms are inserted from the upper opening 7a. At this time, the region from the fingertip to the wrist is inserted into the hand drying chamber 3, and the upper hand detection sensor (light emitting side) 6 a and the hand detection sensor (light receiving side) provided in the hand drying chamber 3. A pair of sensors composed of 6c and a pair of sensors composed of a back side hand detection sensor (light emitting side) 6b and a hand detection sensor (light receiving side) 6c detect that a hand has been inserted. When these sensors detect that a hand has been inserted, the high-pressure airflow generator 4 is activated and sucks in air from which dust has been removed by passing through the air filter 13 from the intake port 12. The air is sucked into the suction side of the high-pressure airflow generator 4 through the duct 11. The high-pressure airflow generator 4 generates high-pressure air from the sucked air.

  The high-pressure air whose pressure has been increased by the high-pressure airflow generator 4 is exhausted into the exhaust chamber 8 from the exhaust side of the high-pressure airflow generator 4. The high-pressure air is supplied from the exhaust port 9 to the front-side nozzle 5a and the back-side nozzle 5b through the front-side exhaust duct 10a and the back-side exhaust duct 10b, respectively. These front-side nozzle 5a and back-side nozzle 5b convert high-pressure air into high-speed air, and this high-speed air is jetted into the hand drying chamber 3 from the front-side nozzle 5a and the back-side nozzle 5b. A plurality of these front side nozzles 5a and back side nozzles 5b are installed in a straight line in the width direction of the hand drying chamber 3 in the vicinity of the upper opening 7a. Therefore, in the vicinity of the upper opening 7a, the air curtain In the shape, high-speed air is ejected. The air curtain-like high-speed air hits both the back and palm of the hand inserted into the hand drying chamber 3 and blows off water adhering to the surface of the hand as water droplets.

  Then, as the inserted hand is gradually pulled out from the upper opening 7a to the outside of the hand drying chamber 3, the portion that the air curtain-like high-speed air hits is the wrist of the inserted hand. Move from near to fingertips. In this way, while gradually pulling out the inserted hand from the upper opening 7a, air curtain-shaped high-speed air hits the wrist to the fingertip, that is, the entire hand. Thereby, the water droplet adhering to the whole hand is removed, and the hand can be dried.

  When a hand is pulled out from the hand drying chamber 3, a pair of sensors composed of an upper hand detection sensor (light emitting side) 6a and a hand detection sensor (light receiving side) 6c detect that no hand is inserted, Thereby, the high-pressure airflow generator 4 stops. A wet hand is inserted into the hand drying chamber 3, and the water droplets blown off and peeled off from the wet hand are blown into the space of the hand drying chamber 3 and hit the front side wall surface 3a and the back side wall surface 3b. Then, water droplets hitting the front side wall surface 3a and the rear side wall surface 3b flow down from there toward the bottom of the hand drying chamber 3 and pass through the drainage channel 15 from the drain outlet provided at the bottom of the hand drying chamber 3. And collected in the tank 14.

  Next, the control unit 21 of the hand dryer 1 will be described. FIG. 4 is a block diagram showing the control unit 21 in the first embodiment. The control unit 21 includes a pair of sensors composed of an upper hand detection sensor (light emitting side) 6a and a hand detection sensor (light receiving side) 6c provided in the box 2, and a back side hand detection sensor (light emitting side) 6b. And a hand detection sensor (light receiving side) 6c, when the user's hand is detected, the high-pressure airflow generator 4 is driven. Further, when the user finishes using the hand dryer 1 and pulls out his / her hand from the hand drying chamber 3, the control unit 21 uses the upper hand detection sensor (light emitting side) 6a and the hand detection sensor (light receiving side) 6c. A pair of configured sensors detect that a hand is not inserted, and thereby stop the high-pressure airflow generator 4.

  As shown in FIG. 4, the control unit 21 is provided with a storage unit 22 that stores the number of operations of the high-pressure airflow generator 4, and records the total number of operations from the initial state. Further, the box 2 is provided with output adjusting means for adjusting the output of the high pressure air flow generator 4, and the administrator of the hand dryer 1 uses this output adjusting means to adjust the output of the high pressure air flow generator. The output of 4 can be adjusted to the desired output. In addition, the memory | storage part 22 also memorize | stores the information of the output which shows by which output this high pressure airflow generator 4 was drive | operated.

  Further, the control unit 21 is provided with a determination unit 23, which determines the number of times of operation of the high-pressure air flow generator 4 stored in the storage unit 22 in advance. It is determined whether or not the operation frequency threshold is reached. This operation frequency threshold value can be freely changed by the administrator.

  The blade 4a provided in the high-pressure airflow generator 4 provided in the hand dryer 1 employs, for example, a turbofan, thereby increasing the pressure of the air and converting it into a high-pressure airflow. The hand dryer 1 is often installed in a public toilet, and depending on the installation location, it may be used 1000 times or more per day. For this reason, the blade 4a and the DC brushless motor 4b in the high-pressure airflow generator 4 are subjected to a large load due to repeated rotation and stop operations and high-speed rotation itself. Therefore, the blades 4a in the high-pressure airflow generator 4 may reach the use limit by continuing the repetition of operation and stop.

  As an index representing the use limit, an SN curve is generally used in the same manner as the fatigue strength of a material. S indicates the stress amplitude, and N indicates the number of repetitions. This stress amplitude is a parameter that changes with the square of the rotational speed and affects the number of repetitions of the material (blade 4a). That is, in the hand dryer 1, in order to determine the use limit of the blade 4a, it is only necessary to grasp the cumulative number of operations of the high-pressure airflow generator 4 and the rotational speed of the DC brushless motor 4b.

  Next, the operation of the hand dryer 1 according to the first embodiment will be described. In the control unit 21 of the hand-drying device 1, the cumulative number of operations that is equal to or less than the cumulative number of operations of the high-pressure airflow generator 4 at which the blades 4 a become the use limit is set as the operation number threshold. When the determination unit 23 determines that the number of operations of the high-pressure airflow generator 4 stored in the storage unit 22 has reached this operation number threshold, the control unit 21 instructs the DC brushless motor 4b to stop. put out. Thereby, the DC brushless motor 4b automatically stops its driving, and the rotation of the blades 4a also stops. Thus, since the high-pressure airflow generator 4 stops before the blade 4a reaches the use limit, the hand dryer 1 continues to use the hand dryer 1 after the use limit of the blade 4a is exceeded. It can suppress continuing.

  As described above, the higher the rotational speed of the DC brushless motor 4b, the greater the stress amplitude applied to the blade 4a. Therefore, at the maximum output of the high-pressure airflow generator 4, the cumulative number of operations that becomes the use limit of the blade 4a. Is the least. For this reason, the operation frequency threshold is set to the DC brushless motor at the maximum output of the high-pressure airflow generator 4 mounted on the hand dryer 1 so that the number of operations at the maximum output of the high-pressure airflow generator 4 is not exceeded. It is set based on the rotational speed of 4b. When the high-pressure airflow generator 4 is used at a lower output than the maximum output, the use limit of the blades 4a is reached rather than the cumulative number of operations at the maximum output (initial setting cumulative number of operations). The cumulative number of operations increases. For this reason, the operation frequency threshold value is corrected based on the output information in the high-pressure airflow generator 4 stored in the storage unit 22. In this case, the operation frequency threshold that has been corrected and set again is greater than the initial operation frequency threshold (the cumulative operation frequency that is equal to or less than the cumulative operation frequency at the maximum output of the high-pressure airflow generator 4). To increase.

  As a modification of the first embodiment, as shown in FIG. 5, the hand dryer 1 detects a temperature detection unit 24 that detects the temperature inside the box 2 and the atmospheric pressure inside the box 2. It is also possible to provide an atmospheric pressure detection unit 25 that performs the operation. The fatigue strength of the material (blade 4a) is also affected by changes in the rotational speed due to changes in temperature and pressure. Therefore, the accuracy of the driving frequency threshold can be further increased by correcting the driving frequency threshold based on the temperature detected by the temperature detection unit 24 and the atmospheric pressure detected by the atmospheric pressure detection unit 25.

Embodiment 2. FIG.
Next, the hand dryer 1 which concerns on Embodiment 2 is demonstrated. FIG. 6 is a front view showing the hand dryer 1 according to the second embodiment with the front cover 16 removed, and FIG. 7 is a block diagram showing the control unit 21 in the second embodiment. As shown in FIG. 7, the present embodiment is different from the first embodiment in that a notification unit 26 is connected to the control unit 21. In the second embodiment, the description of the parts common to the first embodiment will be omitted, and the difference from the first embodiment will be mainly described.

  In the present embodiment, as shown in FIG. 6, a notification unit 26 is provided above the tank 14. When the determination unit 23 determines that the number of operations of the high-pressure airflow generation device 4 has reached the operation number threshold, the notification unit 26 turns on the lamp according to a command from the control unit 21. It notifies the external manager by flashing or sound. At this time, no stop command is issued from the control unit 21 to the high-pressure airflow generator 4. In the present embodiment, by providing the notification unit 26, the administrator can know in advance that it is almost time to replace the high-pressure airflow generator 4. For this reason, the administrator can smoothly replace the high-pressure airflow generator 4 before the high-pressure airflow generator 4 stops. Therefore, it can suppress that the high pressure airflow generator 4 stops and a user cannot use the hand dryer 1. FIG.

  Moreover, the alerting | reporting part 26 is good also as a thing like an indicator which can display the remaining frequency | count until it reaches | attains a driving frequency threshold value, as shown in FIG. Thereby, the administrator can check the approximate replacement time of the high-pressure airflow generator 4 before reaching the operation frequency threshold. For this reason, replacement | exchange of the high pressure airflow generator 4 can be performed more smoothly. In addition, you may make it the alerting | reporting part 26 sound-output with the speaker the remaining frequency | count until it reaches | attains a driving frequency threshold value.

  In the present embodiment, the notification unit 26 notifies the replacement timing of the high-pressure airflow generator 4 and does not stop the high-pressure airflow generator 4. However, the notification unit 26 notifies the replacement timing. After that, the control unit 21 may issue a command to stop the high-pressure airflow generator 4. If the administrator cannot confirm that the notification unit 26 notifies the replacement time and the hand dryer 1 continues to be used, the blade 4a reaches the use limit, and the hand dryer 1 detects an abnormality and stops. To do. By stopping the high-pressure airflow generator 4 after the notification unit 26 notifies the replacement time, the stop due to the abnormality detection can be suppressed.

  DESCRIPTION OF SYMBOLS 1 Hand dryer, 2 box body, 3 hand drying chamber, 3a front side wall surface, 3b back side wall surface, 4 high pressure air flow generator, 4a blade | wing, 4b DC brushless motor, 5a front side nozzle, 5b back side nozzle, 6a Upper hand detection sensor (light emission side), 6b Rear side hand detection sensor (light emission side), 6c Hand detection sensor (light reception side), 7a Upper opening, 7b Side opening, 8 Exhaust chamber, 9 Exhaust port, 10a Front Side exhaust duct, 10b Rear side exhaust duct, 11 Intake duct, 12 Intake port, 13 Air filter, 14 Tank, 15 Drainage channel, 16 Front cover, 21 Control unit, 22 Storage unit, 23 Judgment unit, 24 Temperature detection unit, 25 atmospheric pressure detection unit, 26 notification unit.

Claims (5)

Box and
A hand drying chamber provided in the box and having an opening into which a hand is inserted;
A high-pressure airflow generator provided inside the box for generating high-pressure air;
A nozzle that ejects high-pressure air generated by the high-pressure airflow generator into the hand-drying chamber;
A controller for controlling the high-pressure airflow generator,
The controller is
A storage unit for storing the number of operations of the high-pressure airflow generator;
A determination unit that determines whether or not the number of operation times of the high-pressure airflow generation device stored in the storage unit has reached a predetermined operation frequency threshold value of the high-pressure airflow generation device. Hand drying equipment. The controller is
The hand according to claim 1, wherein when the determination unit determines that the number of operations of the high-pressure airflow generator has reached the operation frequency threshold, the operation of the high-pressure airflow generator is stopped. Drying equipment. The controller is
When the determination unit determines that the number of operations of the high-pressure airflow generator has reached the operation frequency threshold, the outside notifies the outside that the number of operations of the high-pressure airflow generator has reached the operation frequency threshold. The hand dryer according to claim 1, further comprising a notification unit. The controller is
The operation of the high-pressure airflow generator is stopped after the notification unit notifies the outside that the number of operations of the high-pressure airflow generator has reached the operation frequency threshold. Hand drying equipment. The hand-drying device according to claim 3 or 4, wherein the notification unit notifies a remaining number of times until the number of operations of the high-pressure airflow generation device reaches the operation number threshold.

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