JP2010253095A - Method for starting nozzle operating motor and hand dryer using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for starting a nozzle operating motor, capable of securely driving a blowing nozzle when driving a gas supply means for generating a high-speed current and a movable nozzle for working the blowing nozzle and a hand dryer using the same. <P>SOLUTION: A control means 20 drives a blower 4 after starting the nozzle operating motor 14. Thereby, a nozzle operating means 9 starts under the condition receiving no wind pressure from the blower 4, which gives the method for starting the nozzle operating motor capable of securely driving the nozzle operating means 9 and the hand dryer using the same. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hand dryer.

  An example of a conventional hand dryer using a movable nozzle is described in Patent Document 1, for example. FIG. 12 shows the configuration of a conventional hand dryer. According to this, the nozzle 101 that blows out the jet generated by the gas supply means 103 is movable in parallel with the direction in which the hand is inserted using the driving means 102, and when the hand is inserted, the nozzle 101 The water jet attached to the hand is dried in a short time by moving the nozzle 101 with time and applying the jet to the fingertip.

Japanese Patent No. 3794333

  When such a conventional hand dryer using a movable nozzle detects that a hand has been inserted, it is set by gas detection wind pressure means installed in the vicinity of the blow nozzle after blowing the gas wind by the gas supply means. When the gas wind pressure value is reached, the driving means starts to drive the blowing nozzle. However, since the gas wind generated from the gas supplying means is a high speed wind, the blowing nozzle and the blowing nozzle driving means are loaded with the high speed wind. That would be the case. Therefore, in order to blow out the high-speed air by reciprocating the nozzle at high speed, the starting torque of the driving means using a rotary motor or linear motor is insufficient, and as a result, it cannot be started and the blowing nozzle becomes inoperable. Thus, there is a problem that the drying time becomes long, and there is a demand for a method for starting a nozzle movable motor for driving the blowout nozzle reliably and a hand drying device using the method.

  The present invention solves such a conventional problem, and a method for starting a nozzle movable motor capable of reliably starting a blowing nozzle when driving a gas supply means and a movable nozzle for generating high-speed wind, and the same An object of the present invention is to provide a hand-drying device that uses the above.

  In order to achieve the above object, the hand drying device of the present invention has a main body that forms an outline of the device, a hand drying chamber having a space for inserting a hand, and a direction in which a hand is inserted into the wall surface of the hand drying chamber. A plurality of nozzles arranged in a substantially orthogonal direction and generating a jet for applying to the inserted hand, a blowing duct for guiding the high pressure air to the nozzle, and blowing high pressure air to the blowing duct A high-pressure blower, a nozzle movable motor that reciprocally moves the nozzle, a nozzle movable means coupled to the nozzle movable motor, and a control means for driving the high-pressure blower and the nozzle movable motor. The high-pressure blower is driven after starting the nozzle movable motor.

  An activation method of a movable nozzle motor that can reliably activate a movable nozzle when driving a gas supply means and a movable nozzle for generating high-speed wind by this means, and a hand dryer using the same.

  According to the present invention, a main body that forms the outline of the apparatus, a hand drying chamber having a space in which a hand can be inserted, and a plurality of devices arranged in a substantially perpendicular direction with respect to the direction in which the hand is inserted into the wall surface of the hand drying chamber are provided. A nozzle for generating a jet to be applied to the inserted hand, a blowing duct for guiding the nozzle to the nozzle with high-pressure air, a high-pressure blower for blowing high-pressure air to the blowing duct, and the nozzle reciprocally movable. A movable nozzle connected to the nozzle movable motor, and a control means for driving the high-pressure blower and the nozzle movable motor. The control means starts the nozzle movable motor and then activates the high-pressure blower. Since the gas supply means for generating high-speed wind and the movable nozzle are driven, the movable nozzle can be reliably started. In, it is possible to provide a hand dryer which uses the method and the same start of the nozzle moving motor with effect of drying in a short time flicked moisture adhering to the hand.

Sectional perspective view which shows the structure of the hand-drying apparatus of Embodiment 1 of this invention. Detailed sectional view showing the configuration of the nozzle Front view showing the configuration of the nozzle moving means Cross-sectional perspective view showing the configuration of the nozzle moving means Block diagram showing the configuration of the control means Flow chart showing the operation of the control means The block diagram which shows the structure of the control means of Embodiment 2 of this invention. Flow chart showing the operation of the control means The block diagram which shows the structure of the control means of Embodiment 3 of this invention. Flow chart showing the operation of the control means The block diagram which shows the structure of the control means of Embodiment 4 of this invention. Flow chart showing the operation of the control means The block diagram which shows the structure of the control means of Embodiment 5 of this invention. Flow chart showing the operation of the control means Detailed perspective view showing the configuration of a conventional hand dryer

  According to the first aspect of the present invention, the main body that forms the outline of the apparatus, the hand drying chamber having a space in which a hand can be inserted, and the direction in which the hand is inserted into the wall surface of the hand drying chamber is substantially perpendicular. A plurality of nozzles arranged in a direction and generating a jet for applying to an inserted hand; a blow duct for guiding high pressure air to the nozzle; and a high pressure blower for blowing high pressure air to the blow duct A nozzle movable motor that reciprocally moves the nozzle, a nozzle movable means coupled to the nozzle movable motor, and a control means for driving the high-pressure blower and the nozzle movable motor, wherein the control means is configured to move the nozzle. Since the high-pressure blower is driven after the motor is started, the movable nozzle is securely connected when the gas supply means and the movable nozzle for generating high-speed wind are driven. Since the ability to dynamic, such an action that can be dried in a short time flicked moisture adhering to the hand.

  According to the second aspect of the present invention, the first activation time measuring means for measuring the activation time after the nozzle movable motor is activated is provided, and the first activation time measuring means sets the first predetermined time. Since the high-pressure blower is driven after a lapse of time, the movable nozzle can be reliably driven when the gas supply means for generating high-speed air and the movable nozzle are driven.

  According to a third aspect of the present invention, the current detecting means for detecting the current of the nozzle movable motor is provided, and the high pressure blower is driven after the nozzle movable motor exceeds a predetermined current value by the current detecting means. Thus, after the operation of the nozzle movable motor is stabilized, the high-pressure blower is driven to move the nozzle stably.

  According to a fourth aspect of the present invention, there is provided a rotational speed detecting means for detecting the rotational speed of the nozzle movable motor, and after the rotational speed of the motor exceeds a third predetermined value by the rotational speed detecting means, the high pressure is detected. Since the blower is driven, the movable nozzle can be reliably driven when the gas supply means for generating high-speed wind and the movable nozzle are driven.

  According to the fifth aspect of the present invention, the PWM control means for driving the nozzle movable motor and the second start time measuring means for counting the start time after the motor start is provided, and after the motor start, It is driven with a DUTY output higher than the normal time until the fourth predetermined time, and is driven with the DUTY output at the normal time when the fourth predetermined time is exceeded, so it can move with the gas supply means for generating high-speed wind. When the nozzle is driven, the movable nozzle can be reliably driven.

  Further, according to the invention of claim 6, the phase control means for controlling the rotation speed of the high pressure blower and the third start time measurement means for measuring the start time after the start of the high pressure blower are provided, Since the third start-up time measuring means is driven by the phase control in the short section until the fifth predetermined time, and after the fifth predetermined time has elapsed, it is driven by the phase control in the predetermined section, When the gas supply means for generating high-speed wind and the movable nozzle are driven, the movable nozzle can be reliably driven.

(Embodiment 1)
Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 6.

  1 is a cross-sectional perspective view showing the configuration of the hand dryer, FIG. 2 is a detailed cross-sectional view showing the configuration of the nozzle 3, FIG. 3 is a front view showing the configuration of the nozzle moving means 9, and FIG. FIG. 5 is a block diagram showing the configuration of the control means 20, and FIG. 6 is a flowchart showing the operation of the control device.

  As shown in FIG. 1, the main body 1 fixed to the wall surface includes a hand drying chamber 2 as a space where a user can insert a wet hand, and applies a jet to the inserted hand. For example, a cylindrical nozzle 3 formed of ABS or PP is provided on the side surface of the hand drying chamber 2 in a state where a plurality of nozzles 3 are arranged in a direction substantially perpendicular to the insertion direction of the hand.

  In addition, the main body 1 includes a blower 4 as a high-speed turbo blower that generates high-pressure air, and a blowout duct 5 that guides an air flow blown from the blower 4 to the nozzle 3.

  On the other hand, the lower surface of the main body 1 is provided with a suction port 6 for taking in air from the outside, and a suction duct 7 for guiding air taken from the outside into the blower 4 from the suction port 6, so that the blower 4 can be connected from the suction port 6. Air can be blown to the nozzle 3 via the via.

  Next, the reciprocally movable configuration of the nozzle 3 will be described.

  As shown in FIG. 2, the blowout duct 5 holds the root portion 3 b of the nozzle 3 so that the tip end portion 3 a of the nozzle 3 is a free end and can be tilted at the end portion 5 a, and the nozzle 3 and the blowout duct 5. Is provided with a nozzle elastic holding member 8.

  As shown in FIG. 3, for example, a plate-shaped guide plate 10 is supported on the central portion 3 c of the nozzle 3 by a plurality of rollers 11 so as to be linearly movable in the horizontal direction as nozzle moving means 9 that reciprocally moves the central portion 3 c. By passing the nozzle 3 through the plurality of opening holes 12 provided in the guide plate 10, the opening hole 12 and the nozzle 3 interfere with each other when the guide plate 10 reciprocates. It is configured to repeatedly tilt in the reciprocating direction. That is, the reciprocating motion of the guide plate 10 is transmitted to the central portion 3c, and the nozzle 3 is configured to reciprocate with the root portion 3b serving as a fulcrum and the tip portion 3a having a larger arc than the central portion 3c. The tip 3a of the nozzle 3 is reciprocally moved in an arc shape.

  As shown in FIGS. 3 and 4, the nozzle moving means 9 includes a nozzle moving motor 14 having a motor rotating shaft 13, for example, a DC brushless motor using a PWM drive system, and a crank rotation connected in series to the motor rotating shaft 13. A crank 16 having a shaft 15 and having an eccentric pin 17 at an eccentric position parallel to the crank rotation shaft 15 on the opposite side to the nozzle movable motor 14 and one end of the eccentric pin 17 and the link 18 are rotatably connected. By connecting the other link 18 and the link connecting shaft 19 provided on the guide plate 10, the rotational movement of the nozzle movable motor 14 is converted into the reciprocating motion of the guide plate 10.

  Also, as shown in FIG. 1, a drain pipe 22 is connected through a hole opened in the bottom surface of the hand drying chamber 2 in order to collect water droplets separated from the hand inserted in the hand drying chamber 2. The water is guided to the installed water receiver 23. The control means 20 is installed on the upper front and back surfaces of the hand drying chamber 2.

  As shown in FIG. 5, the control means 20 is an infrared light emitting sensor composed of one or a plurality of sensors for detecting that a hand has been inserted into the hand drying chamber 2 or that a hand has been continuously inserted. And a hand detection means 21 such as an infrared light receiving sensor, a CPU 27 for inputting that the hand is detected by the hand detection means 21, a triac, a thyristor, etc. for driving the blower 4 output as an output signal from the CPU 27. The drive circuit 30 used, the drive circuit 25 using a transistor for driving the nozzle movable motor 14 which is also output as an output signal from the CPU 27, and the command from the CPU 27 after the nozzle movable motor 14 is activated, Elapsed time measuring means 2 as a first activation time measuring means using a timer IC or the like for measuring and transmitting the elapsed time When constitutes a first predetermined time, for example 500ms which is previously stored in the internal CPU 27.

  In the above configuration, when the user does not insert a hand into the hand drying chamber 2, infrared light emitted from the infrared light emitting sensor as the hand detecting means 21 is received by the opposite infrared light receiving sensor. Is input to the CPU 27. That is, in the CPU 27, if the input pattern is the same pattern by the light receiving sensor and the output pattern output to the light emitting sensor, it can be determined that no hand is inserted.

  On the other hand, when the user inserts a hand into the hand drying chamber 2, the infrared light emitted from the infrared light emitting sensor serving as the hand detecting means 21 is blocked by the hand and the light receiving sensor disposed opposite to the infrared light emitted from the light emitting sensor. Cannot receive light. That is, it can be determined that a hand has been inserted by receiving the same input pattern as when the signal is not output in the CPU 27 although it is output to the light emitting sensor.

  When the hand detecting means 21 detects that a hand has been inserted, the nozzle movable motor 14 and the blower 4 are started. In the present embodiment, the nozzle 3 is operated as follows. Is to be dried. In other words, the nozzle 3 reciprocates with the root 3b serving as a fulcrum and the tip 3a having a larger arc than the center 3c, so that the jet strikes the hand from an oblique direction, and the water droplets attached to the hand are obliquely applied. Blow away in the direction. In this way, by applying the jet, the direction of the water droplet to be blown off can be directed in a certain direction as compared with the case where the jet is applied from the front, so that the water droplet can be quickly separated from the hand. In other words, when a jet is applied from the front, it may be difficult for water droplets to travel from the hand in the vertical and horizontal directions and separate from the hand. On the other hand, applying a jet from an oblique direction in a plane perpendicular to the insertion direction of the hand as in the present embodiment can easily separate the water droplet from the hand. Based on the nozzle reciprocation number detected by the nozzle reciprocation number detection means (not shown), a predetermined number of nozzle reciprocation times is ensured by applying feedback to the drive circuit of the nozzle movable motor 14, and hand drying is performed. Time can be significantly reduced. In such reciprocating motion of the nozzle 3, the nozzle 3 is configured to reciprocate with the tip 3a having a large arc with the root 3b as a fulcrum, so that the jet blown out from the nozzle 3 is directed to the root 3b. Thus, the blowing direction is forcibly changed. At this time, the pressure of this jet is applied to the nozzle 3, and a large load is applied to the nozzle movable motor 14 via the guide plate 10. Therefore, in order to operate the nozzle more reliably, a motor with a large torque may be employed, but the apparatus becomes large.

  Therefore, in the present embodiment, even if a motor having a small torque is adopted as the nozzle movable motor 14, the following control is performed in order to reliably perform the operation of the nozzle 3.

  When the hand detection means 21 detects that a hand has been inserted, first, the CPU 27 outputs an output signal (Hi or Lo) to the drive circuit 25 to activate the nozzle movable motor 14 in order to activate the nozzle movable motor 14. At the same time, in order to measure the operation time of the nozzle movable motor 14, the CPU 27 outputs a signal for starting the measurement to the elapsed time measuring means 26 and transmits the progress from the elapsed time measuring means 26 to the CPU 27 in real time. The CPU 27 can recognize the progress of the nozzle movable motor 14.

  When the CPU 27 recognizes that the activation time of the nozzle movable motor 14 has been activated for a first predetermined time, for example, 500 ms, the CPU 27 outputs an output signal (Hi or Lo) to the drive circuit 25 to activate the blower 4. By doing so, it is possible to realize an operation in which the blower 4 is started after the nozzle movable motor 14 is started for a predetermined time.

  Thus, outside air is taken in from the suction port 6 by the air flow generated by the blower 4 and air is supplied to the blower 4 via the suction duct 7. The air is guided from the blowout duct 5 to the nozzle 3 and sprayed into the hand drying chamber 2. Further, the nozzle 3 is reciprocally moved by the rotation of the nozzle moving motor 14 of the nozzle moving means 9, and the jet flow ejected from the nozzle 3 is reciprocated to eliminate drying unevenness by applying the jet flow to the hand, thereby achieving high speed. Drying is realized. The water droplet separated from the hand adheres to the wall surface of the hand drying chamber 2 and travels downward by gravity, and then is collected in the water receiver 23 through the drain pipe 22 from the hole on the bottom surface of the hand drying chamber 2.

  Next, the step operation of the control means 20 will be described with reference to FIG.

  First, in S (step) 1, it is determined whether or not a hand has been detected by the hand detection means 21, and when it is detected that a hand has been inserted, the nozzle movable motor 14 is driven in S2, and the nozzle movable motor 14 is driven in S3. The elapsed time measuring means 26 (elapsed time measurement timer) for measuring the elapsed time is started. Then, in S4, it is determined whether or not the start time of the nozzle movable motor 14 has passed the first predetermined time. If this first predetermined time (500 ms) has passed, the blower 4 is driven in S5. In S6, it is determined whether the hand is detected. If the hand is detected, the operation is continued. If not detected, the nozzle movable motor 14 and the blower 4 are stopped in S7, and whether the hand is detected again in S8. Then, the operation is repeated by the same steps.

  As described above, when the nozzle moving motor 14 for moving the nozzle moving means 9 is started, the blower 4 is stopped, so that there is no high-speed wind from the blower 4 and the nozzle 3 is not subject to any wind pressure. Since no load is applied, the nozzle movable motor 14 can be reliably started without these effects.

  In the first embodiment, the case where the nozzle movable motor and the air blowing device are each configured as one is described. However, the same effect can be obtained by driving in the same manner for a plurality of cases.

  In the first embodiment, the light detecting sensor and the light receiving sensor are used as the hand detecting means. However, the same effect can be obtained because the same detection can be performed even if a distance measuring sensor is used on either the upper front surface or the rear surface of the hand drying chamber. Is obtained.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS.

  FIG. 7 is a block diagram showing the configuration of the control means 20a in the second embodiment.

  In addition, the same thing as Embodiment 1 attaches | subjects the same symbol, and abbreviate | omits detailed description.

  As shown in FIG. 7, the current detection means 32 detects the current flowing through the nozzle movable motor 14, and uses, for example, a shunt resistor to input the potential difference generated at both ends when the current flows to the CPU 27a. It consists of what is recognized as an analog value by AD conversion and a predetermined current value stored in advance in the CPU 27a, for example, 100 mA.

  In the above configuration, with the activation of the nozzle movable motor 14, the current flowing through the shunt resistor rises with the elapsed operation time and generates a potential difference at both ends. Since the current value and the potential difference of the nozzle movable motor 14 are input to the analog port of the CPU 27a in the range of 0 to 5 V, the current value of the nozzle movable motor 14 can be recognized as a voltage value.

  When the current value of the nozzle movable motor 14 reaches 100 mA, which is a predetermined current value stored in advance, the CPU 27a outputs (Hi or Lo) to the drive circuit 30a to start the air blower 4.

  Next, the step operation of the control device 21a will be described with reference to FIG.

  As shown in FIG. 8, first, when it is detected in S (Step) 9 that the hand has been inserted by the hand detecting means, the nozzle movable motor 14 is driven in S10, current starts to flow through the shunt resistor, and the current value gradually increases. Rises. Then, in S11, the CPU 27a determines whether or not the current value has reached 100 mA, and if it reaches, the blower 4 is driven in S12. In S13, it is determined whether the hand is detected. If the hand is detected, the operation is continued. If not detected, the nozzle movable motor 14 and the blower 4 are stopped in S14, and whether the hand is detected again in S9. Thereafter, the operation is repeated by the same steps.

  As described above, since the blower 4 is stopped until the current value of the nozzle movable motor 14 for moving the nozzle moving means 9 reaches a predetermined current value, the nozzle is not in a state where there is no high-speed wind from the blower 4. Since no load due to wind pressure is applied, the nozzle movable motor 14 can be reliably started without these effects.

  In the second embodiment, the current detecting means 32 uses a shunt resistor, but the same effect can be obtained by a current transformer system.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS.

  FIG. 9 is a block diagram showing the configuration of the control means 20b in the third embodiment.

  In addition, the same thing as Embodiment 1 attaches | subjects the same symbol, and abbreviate | omits detailed description.

  As shown in FIG. 9, the rotation speed detection means 33 detects the rotation speed of the nozzle movable motor 14. For example, a plurality of Hall ICs are installed on the stator inside the nozzle movable motor 14 using a Hall IC or the like. When the iron core of the rotor approaches the Hall IC by rotation, it emits light, which is input to the CPU 27b as a pulse signal, converted into a rotational speed and recognized as an analog value, and stored in the CPU 27b in advance. The predetermined rotational speed, for example, 400 r / min.

  In the above configuration, as the nozzle movable motor 14 is started, Hi or Lo is input to the general-purpose port of the CPU 27b so as to compare the number of rotations of the nozzle movable motor 14 and the number of pulses, so that the number of rotations of the nozzle movable motor 14 is recognized. It will be possible.

  When the rotation speed of the nozzle movable motor 14 reaches 400 r / min, which is a predetermined rotation speed stored in advance, the CPU 27 b outputs (Hi or Lo) to the drive circuit 30 b to start the blower 4.

  Next, the step operation of the control means 20b will be described with reference to FIG.

  As shown in FIG. 10, first, in S (step) 16, when it is detected that the hand is inserted by the hand detection means 21, the nozzle movable motor 14 is driven in S 17 to detect a pulse by the Hall IC, and within a certain time. The number of detected pulses increases. Then, in S18, the CPU 27b determines whether or not the rotational speed has reached 400 r / min. If it has reached, the blower 4 is driven in S19. In S20, it is determined whether a hand is detected. If a hand is detected, the operation is continued. If not detected, the nozzle movable motor 14 and the blower 4 are stopped in S21, and whether a hand is detected again in S16. Thereafter, the operation is repeated by the same steps.

  As described above, since the blower 4 is stopped until the rotational speed of the nozzle movable motor 14 for moving the nozzle moving means 9 reaches a predetermined rotational speed, there is no high-speed wind from the blower 4, Since no load due to wind pressure is applied, the nozzle movable motor 14 can be reliably started without these effects.

(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIGS.

  FIG. 11 is a block diagram showing the configuration of the control means 20c in the fourth embodiment.

  In addition, the same thing as Embodiment 1 attaches | subjects the same symbol, and abbreviate | omits detailed description.

  As shown in FIG. 11, a motor PWM drive circuit 34 for controlling the number of rotations of the nozzle movable motor 14 and a second predetermined time measuring means for measuring the elapsed time since the nozzle movable motor 14 was driven. The elapsed time measuring means 26 and the second predetermined time stored in the CPU 27c in advance, for example, 300 ms, are provided, and the system starts with a high duty, for example, 100% until the second predetermined time is reached. Even if the blower 4 is driven, the nozzle 4 is driven by driving the blower 4 within a predetermined time by driving at a low preset duty. The movable motor 14 is difficult to stop. Therefore, since the blower 4 can be driven faster, the drying time can be shortened.

  Next, the step operation of the control means 20c will be described with reference to FIG.

  First, when it is detected in S (step) 23 that the hand detection means 21 has inserted a hand, the setting of PWM for driving the nozzle movable motor 14 is set to 100% in S24, and the nozzle movable motor is started in S25. After driving 14, the elapsed time is measured by the elapsed time measuring means 26. Then, the blower 4 is driven in S26, and after the start time has passed the second predetermined value in S27, the PWM setting is driven with a predetermined value lower than 100%, for example, 50%. Further, it is determined whether or not a hand is detected in S28. If a hand is detected, the operation is continued. If not detected, the nozzle movable motor 14 and the blower 4 are stopped in S29 and S30, and the hand is detected again in S23. Whether or not is detected, the operation is repeated by the same steps.

  As described above, when the nozzle movable motor 14 is activated, since the duty is 100%, the blower 4 can be driven in a state where the activation torque is high, and since drying starts more quickly, the drying time can be shortened.

(Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIGS.

  FIG. 13 is a block diagram showing the configuration of the control means 20d in the fourth embodiment.

  In addition, the same thing as Embodiment 1 attaches | subjects the same symbol, and abbreviate | omits detailed description.

  As shown in FIG. 13, phase control means 35 for controlling the rotation speed of the blower 4, for example, a triac or thyristor, and third activation time measuring means for measuring the elapsed time since the blower 4 is activated. Until the elapsed time reaches the third predetermined value, the air blower 4 is driven with a short energization angle by the phase control means 35, so that the rotational speed at the time of startup is reduced. The drive circuit 25 can drive the nozzle movable motor 14 with a light load by suppressing it, that is, by driving with low-speed wind.

  Next, the step operation of the control means 20d will be described with reference to FIG.

  First, when it is detected in S (step) 31 that a hand has been inserted, an elapsed time measuring means 26 (elapsed time measurement timer) for measuring the elapsed time of the nozzle movable motor 14 is started in S32. In step S33, the nozzle movable motor 14 is driven. In step S34, it is determined whether the driving time of the nozzle movable motor 14 has elapsed for a third predetermined time. If the third predetermined time (300 ms) has elapsed, the phase is controlled in S35. Therefore, the blower 4 is driven only for a predetermined value set in advance, for example, a 40% interval (energization angle) between AC half cycles. Therefore, the rotational speed of the blower 4 is driven at a low speed. If the elapsed time reaches the third predetermined value in S36, the phase control is driven at 100% of the AC half cycle in S37, and high-speed wind is blown out. Then, in S38, it is determined whether or not a hand is detected. If the hand is detected, the operation is continued. If not detected, the nozzle movable motor 14 and the blower 4 are stopped in S39 and S40, and the hand is detected again in S31. Whether or not is detected, the operation is repeated by the same steps.

  As described above, since the blower 4 is driven from low speed rotation at the time of activation, the nozzle movable motor 14 can be activated with a light load, so that the blower 4 and the nozzle movable motor 14 can be reliably driven.

  The present invention can also be applied to a drying device that blows off water droplets using high-speed air to dry hands and clothes, and an air blowing device that blows off dust and the like.

DESCRIPTION OF SYMBOLS 1 Main body 2 Hand drying chamber 3 Nozzle 4 Blower 5 Outlet duct 9 Nozzle movable means 14 Nozzle movable motor 20 Control means 20a Control means 20b Control means 20c Control means 20d Control means 26 Elapsed time measurement means 25 Drive circuit 30 Drive circuit 30a Drive Circuit 30b Drive circuit 32 Current detection means 33 Rotation speed detection means 34 Motor PWM drive circuit

Claims (7)

A main body that forms an outer shell of the apparatus, a hand drying chamber having a space in which a hand can be inserted, and a plurality of hands inserted in a substantially perpendicular direction with respect to a direction in which the hand is inserted into the wall surface of the hand drying chamber. A nozzle for generating a jet to be applied to the nozzle, a blowing duct for guiding high-pressure air to the nozzle, a high-pressure blower for blowing high-pressure air to the blowing duct, a nozzle movable motor for reciprocating the nozzle, and the nozzle movable motor A nozzle moving means coupled to the nozzle, and a control means for driving the high-pressure blower and the nozzle movable motor, wherein the control means drives the high-pressure blower after starting the nozzle movable motor. How to start a movable motor. A first start time measuring means for measuring a start time after the nozzle movable motor is started is provided, and the high pressure blower is driven after the first start time measuring means has passed a first predetermined time. Item 2. A method for starting a nozzle movable motor according to Item 1. 3. The nozzle movable motor according to claim 1, further comprising: a current detection unit configured to detect a current of the nozzle movable motor, wherein the high pressure blower is driven after the nozzle movable motor exceeds a predetermined current value by the current detection unit. How to start. A rotation speed detection means for detecting the rotation speed of the nozzle movable motor is provided, and the high pressure blower is driven after the nozzle movement motor exceeds a predetermined rotation speed by the rotation speed detection means. 3. A starting method of the nozzle movable motor according to 3. PWM control means for driving the nozzle movable motor and second activation time measuring means for counting the activation time after activation of the nozzle movable motor are provided, and the second activation time measuring means is a second predetermined time. The system is started with a DUTY output higher than that at a normal time until the second predetermined time is exceeded, and is driven with a DUTY output at a normal time, and the high-pressure blower is started within the predetermined time. The starting method of the nozzle movable motor according to 2, 3 and 4. Phase control means for controlling the number of revolutions of the high-pressure blower and third start-up time measuring means for measuring the start-up time after the start-up of the high-pressure blower are provided, and the third start-up time measuring means is a third predetermined time. 6. The method of starting a nozzle movable motor according to claim 1, wherein the motor is started at a low energization rate until reaching a predetermined value, and is driven at a predetermined energization rate after the predetermined time has elapsed. . A hand dryer for moving the nozzle using the method for starting the nozzle movable motor according to claim 1.

Images