TW202233112A - Hand drying device - Google Patents

Abstract

A hand drying device (1) comprises: a box-shaped housing (2) in which a hand drying chamber (7), a first wind passage (10) and a second wind passage (11) are formed; an airflow generation unit (3) provided in the first wind passage (10) and which generates an airflow; a nozzle (4) which communicates the first wind passage (10) and the hand drying chamber (7) to each other and jets the airflow generated by the airflow generation unit (3) toward the hand drying chamber (7); and an air purification unit (5) provided in the second wind passage (11) and which purifies air. In the housing (2), a first intake port (12) for sucking air outside of the housing (2) into the first wind passage (10), a second intake port (13) for sucking in air outside of the housing (2) into the second wind passage (11), and an exhaust port (14) for discharging, to the outside of the housing (2), the air inside the second wind passage (11) purified by the air purification unit (5) are formed. The first intake port (12) and the second intake port (13) are formed independent of each other.

Description

hand dryer

The present disclosure relates to a drying device that makes wet hands dry after washing.

In order to keep the hands hygienically, it is necessary to wash the hands and hygienically dry the wet hands after washing. Conventionally, as an apparatus for drying wet hands after washing, a hand drying apparatus is known which dries hands by blowing off moisture adhering to hands by jetting a high-speed air flow. Furthermore, a hand drying device has been developed which not only dries the hands but also cleans the air in the hand drying room where the user's hand is inserted.

For example, Patent Document 1 discloses a hand dryer including a frame that forms a hand drying chamber into which a user's hand can be inserted, and an air blower that is provided in the frame and faces the hand. The drying chamber sends out air flow; and the electrostatic atomizing device is installed in the frame and generates atomized mist in the hand drying chamber. In the hand dryer disclosed in Patent Document 1, the air around the hand dryer is taken in the inside of the housing, and an air flow is generated by the air blower. Moreover, in the hand dryer disclosed in Patent Document 1, the electrostatic atomization device is operated in the air blowing operation of the air blower, thereby generating atomized mist in the hand drying chamber. Thereby, the hand inserted in the hand drying room can be dried by the air flow, and the air in the hand drying room can be purified by the atomization mist. [Preceding Patent Documents] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2008-237609

[The problem to be solved by the invention]

However, the hand dryer disclosed in Patent Document 1 has a problem that the air around the hand dryer cannot be purified, although the air in the hand dryer can be purified by atomization.

The present disclosure has been developed in view of the above-mentioned problems, and an object of the present disclosure is to obtain a hand drying device which can make the air around the hand drying device clean. [Means of Solving Problems]

In order to solve the above-mentioned problems and achieve the object, the hand drying device of the present disclosure includes: a box-shaped frame, which forms: a hand drying chamber, which is open on at least one surface and can insert hands; and a first air passage through which air flows. ; and the second air passage is an independent air passage from the first air passage, and air flows; the air flow generating part is arranged in the first air passage and generates air flow; the nozzle is the first air passage. The air passage and the hand drying chamber communicate with each other, and spray the air flow generated by the air flow generating part toward the hand drying chamber; and the air cleaning part is arranged in the second air passage and makes the air clean. In the frame, it is formed: the first air inlet is used to inhale the air outside the frame in the first air passage; the second air inlet is used to inhale the outside of the frame in the second air passage and the exhaust port is used to discharge the air in the second air passage that has been purified by the air cleaning unit to the outside of the frame. The first intake port and the second intake port are formed independently of each other. [Effect of invention]

The hand drying device of the present disclosure has the effect of making the air around the hand drying device clean.

Hereinafter, the hand dryer of the embodiment will be described in detail based on the drawings. Embodiment 1

FIG. 1 is a perspective view showing a hand dryer 1 according to the first embodiment. FIG. 2 is a cross-sectional view of the hand dryer 1 according to the first embodiment, and is a cross-sectional view taken along the line II-II shown in FIG. 1 . Hereinafter, when explaining the directions of the components of the hand dryer 1, the depth direction of the hand dryer 1 shown in FIG. 1 is taken as the X-axis direction, the height direction of the hand dryer 1 is taken as the Y-axis The width direction of the drying apparatus 1 is taken as the Z-axis direction. In addition, the + direction of the X-axis direction is regarded as the front, and the - direction of the X-axis direction is regarded as the rear. The + direction of the X axis direction is the direction from the - side of the X axis to the + side, and the - direction of the X axis direction is the direction from the + side of the X axis to the - side. In addition, the + direction of the Y-axis direction is regarded as the upper direction, and the - direction of the Y-axis direction is regarded as the downward direction. The + direction of the Y axis direction is the direction from the - side of the Y axis to the + side, and the - direction of the Y axis direction is the direction from the + side of the Y axis to the - side. The Y-axis direction may also be referred to as an up-down direction. In addition, the + direction of the Z-axis direction is regarded as the right side, and the - direction of the Z-axis direction is regarded as the left side. The + direction of the Z axis direction is the direction from the - side of the Z axis to the + side, and the - direction of the Z axis direction is the direction from the + side of the Z axis to the - side.

The hand drying device 1 is a device that dries the wet hands after washing by blowing off moisture adhering to the user's hands by the jet of air flow. As shown in FIG. 2 , the hand dryer 1 includes a housing 2 , an air flow generation unit 3 , a nozzle 4 , an air cleaning unit 5 , and a maintenance panel 6 .

The frame body 2 is a box-shaped member forming the outer profile of the hand dryer 1 . The housing 2 accommodates the air flow generating unit 3 , the nozzle 4 , the air cleaning unit 5 , and the like. As shown in FIG. 1, the housing|casing 2 has the bottom surface 2a, the upper surface 2b, the front surface 2c, the back surface 2d, and the left and right side surfaces 2e and 2f. The bottom surface 2a is a horizontal surface. The upper surface 2b is arranged above the bottom surface 2a as a surface separated from the bottom surface 2a. The front surface 2c is a surface which a user faces when drying the wet hands after washing, and is a vertical surface connecting the front ends of the bottom surface 2a and the upper surface 2b. The back surface 2d faces the surface opposite to the front surface 2c, and is a vertical surface connecting the rear ends of the bottom surface 2a and the top surface 2b. The right side surface 2e is a vertical surface connecting the right ends of the bottom surface 2a and the upper surface 2b. The left side surface 2f is a vertical surface connecting the left ends of the bottom surface 2a and the upper surface 2b.

On the upper part of the frame body 2, a hand drying chamber 7 is formed into which the user's hand can be inserted and removed. In the present embodiment, the hand drying chamber 7 is formed with openings on the upper surface 2b and the left and right side surfaces 2e and 2f. The user can insert and remove hands into the hand drying chamber 7 from above or from the left and right sides of the hand drying chamber 7 . Hereinafter, the opening opened to the upper surface 2b in the hand drying chamber 7 is referred to as the upper surface opening 7a, and the opening opened to each of the left and right side surfaces 2e and 2f in the hand drying chamber 7 is referred to as the side opening 7b. The side view shape of the hand drying chamber 7 shown in FIG. 2 is not particularly limited, but in the present embodiment, it is a U-shape with a bottom and an upper opening. The hand drying chamber 7 is slightly inclined so as to be located at the rear as it goes downward from above. In addition, the hand drying chamber 7 should just be opened on at least one surface of the frame body 2 .

The inner wall of the hand drying chamber 7 has a bottom wall 7c, a front side wall 7d and a back side wall 7e. The bottom wall 7c extends substantially in the X-axis direction. The front side wall 7d stands from the front end of the bottom wall 7c. The rear side wall 7e stands from the rear end of the bottom wall 7c. The surfaces of the front side wall 7d and the back side wall 7e facing the hand drying chamber 7 are given a water-repellent coating such as silicon-based, fluorine-based or the like, or a hydrophilic coating such as titanium oxide. The bottom wall 7c, the front side wall 7d and the back side wall 7e are formed of resin impregnated with an antibacterial agent. Therefore, the adhesion of the dirt on the surface of the inner wall of the hand drying chamber 7 can be reduced, and the propagation of bacteria adhering to the surface of the inner wall of the hand drying chamber 7 can be reduced. Also, the bottom wall 7c, the front side wall 7d and the back side wall 7e are formed of resin impregnated with an antiviral material. Therefore, the proliferation of the virus adhering to the surface of the inner wall of the hand drying chamber 7 is suppressed, and the virus can be inactivated. The bottom wall 7c of the hand drying chamber 7 is formed with a drain port (not shown) through which the water of the hand drying chamber 7 is discharged. The drain port is connected to an upper end portion of a drain channel (not shown) extending in the up-down direction. The lower end of the drainage channel is connected to the drainage groove 16 . The drainage groove 16 is a member for storing the water discharged through the drainage channel, and is detachably attached to the bottom of the frame body 2 .

The inner wall of the hand drying chamber 7 is provided with a first hand detecting part 8 and a second hand detecting part 9 which detect a hand inserted in the hand drying chamber 7 . The 1st hand detection part 8 is provided in the upper part of the hand drying chamber 7. As shown in FIG. The 1st hand detection part 8 is provided in the vicinity of the upper surface opening part 7a of the hand drying chamber 7. As shown in FIG. The first hand detection unit 8 is provided below the nozzle 4 . The 2nd hand detection part 9 is provided below the 1st hand detection part 8, and the lower part of the hand drying chamber 7 is provided. The configuration of the first hand detection unit 8 and the second hand detection unit 9 is not particularly limited as long as they can detect a hand inserted into the hand drying chamber 7, and in this embodiment, they are photoelectric sensors.

The 1st hand detection part 8 has the 1st light-emitting part 8a and the 1st light-receiving part 8c, and the 1st reflection surface 8b arrange|positioned so that it may be spaced apart in the X-axis direction. The first light-emitting portion 8a and the first light-receiving portion 8c are provided on the rear side wall 7e. The first reflection surface 8b is provided on the front side wall 7d. The first hand detection unit 8 detects the presence or absence of a hand in the hand drying chamber 7 based on the received light amount of the light projected from the first light emitting unit 8a reflected on the first reflection surface 8b and received by the first light receiving unit 8c. The 2nd hand detection part 9 has the 2nd light emitting part 9a and the 2nd light receiving part 9b which are arrange|positioned so that it may be spaced apart from each other in the X-axis direction. The second light-emitting portion 9a is provided on the front side wall 7d. The second light receiving portion 9b is provided on the rear side wall 7e. The second hand detection unit 9 detects the presence or absence of a hand in the hand drying chamber 7 based on the received light amount of the light projected from the second light emitting unit 9a and received by the second light receiving unit 9b. The first hand detection unit 8 and the second hand detection unit 9 are electrically connected to the control unit 21 described later by wire or wirelessly. The detection results of the first hand detection unit 8 and the second hand detection unit 9 are transmitted to the control unit 21 .

Inside the casing 2, a first air passage 10 through which air flows, and a second air passage 11, which are independent air passages from the first air passage 10, and through which air flows, are formed. In addition, in the casing 2, a first intake port 12 is formed for inhaling the air outside the casing 2 in the first air passage 10; and a second intake port 13 for entering the second air Air outside the casing 2 is sucked into the air passage 11 . In addition, the casing 2 is formed with an exhaust port 14 for discharging the air in the second air passage 11 cleaned by the air cleaning unit 5 to the outside of the casing 2 . In addition, the arrow A of the solid line shown in FIG. 2 shows the flow of the air in the 1st air path 10. As shown in FIG. The arrow B of the broken line shown in FIG. 2 shows the flow of the air in the second air passage 11 . In FIG. 2, the 2nd intake port 13 is shown by a chain line for easy understanding.

The first intake port 12 is formed on the bottom surface 2 a of the housing 2 . The first intake port 12 is provided in the bottom surface 2a at a position closer to the back surface 2d than the center in the X-axis direction. The shape of the first intake port 12 is not particularly limited. The first intake port 12 is provided with an intake filter 15 . The intake filter 15 functions to collect impurities such as dust, garbage, and floating bacteria contained in the air sucked in from the first intake port 12 . Since the hand dryer 1 has the suction filter 15, impurities contained in the air surrounding the hand dryer 1 are suppressed from being sucked into the first air passage 10, and the user's hands can be dried with a hygienic air flow. . As the suction filter 15, it is preferable to use a high-performance filter with high air cleaning performance such as a HEPA (High Efficiency Particulate Air) filter.

The first air passage 10 is an air passage connecting the first intake port 12 and the nozzle 4 and extends in the vertical direction. The first air passage 10 includes a first intake air passage 10a and a first exhaust air passage 10b. The first intake air passage 10a is an air passage from the first intake port 12 to the air flow generating part 3, and takes in the air outside the casing 2 from the first intake port 12 to the inside of the casing 2, An air passage that is supplied to the airflow generating unit 3 . The first exhaust air passage 10 b is an air passage from the exhaust side of the air flow generating part 3 to the nozzle 4 , and is an air passage for discharging the air flow generated by the air flow generating part 3 toward the nozzle 4 . The first exhaust air passage 10b is on the exhaust side of the airflow generating portion 3, and is branched into a first front-side exhaust air passage 10c and a first rear-side exhaust air passage 10d. The first front-side exhaust air passage 10c extends in the vertical direction between the front surface 2c and the front side wall 7d inside the casing 2 . The first rear side exhaust air passage 10d extends in the vertical direction between the rear surface 2d and the rear side wall 7e inside the casing 2 . A heater 17 for heating the airflow is provided at the branch portion of the first front-side exhaust air passage 10c and the first rear-side exhaust air passage 10d.

FIG. 3 is a side view of the hand dryer 1 according to the first embodiment. FIG. 4 is a cross-sectional view of the hand dryer 1 according to Embodiment 1, and is a cross-sectional view taken along the line IV-IV shown in FIG. 3 . As shown in FIGS. 3 and 4 , the second intake port 13 is formed on each of the left and right side surfaces 2e and 2f of the housing 2 . The second intake port 13 is provided at a position closer to the front surface 2c than the center in the X-axis direction among the side surfaces 2e and 2f, and at a position closer to the bottom surface 2a than the center in the Y-axis direction among the side surfaces 2e and 2f. As shown in FIG. 3 , the second intake port 13 is provided below the hand drying chamber 7 . The side view shape of the second intake port 13 is not particularly limited, but is a vertically long rectangle in this embodiment.

As shown in FIG. 4 , the casing 2 is provided with a shielding portion 2g extending from the edge of the second intake port 13 toward the inside of the casing 2 . The shielding portion 2g is disposed on the front surface of the second intake port 13 with a gap therebetween. The shielding portion 2g is inclined so as to be away from the second intake port 13 as it goes from the rear to the front. When a user inserts a wet hand into the hand drying chamber 7, the water adhering to the hand may fall. In this case, the shielding portion 2g plays a role of preventing the falling moisture from entering the air cleaning portion 5 through the second intake port 13 .

As shown in FIG. 2 , the first intake port 12 and the second intake port 13 do not communicate with each other. That is, the first intake port 12 and the second intake port 13 are formed independently of each other. The shortest distance from the edge of the upper surface opening 7a and the side opening 7b to the second intake port 13 along the surface of the frame body 2 is higher than that from the edge of the upper surface opening 7a and the side opening 7b along the surface of the frame body 2 The shortest distance to the first intake port 12 is shorter. As shown in FIG. 3, the 2nd intake port 13 is formed in the same surface as the surface which the side opening part 7b of the housing|casing 2 opens, ie, the side surfaces 2e and 2f on either side. In addition, the second intake port 13 may be formed on at least one of the left and right side surfaces 2e and 2f, the front surface 2c, and the upper surface 2b of the frame body 2 . That is, the second intake port 13 may be formed on one of the left and right side surfaces 2e and 2f, the front surface 2c, and the upper surface 2b of the housing 2, or may be formed on a plurality of surfaces.

As shown in FIG. 2 , the exhaust port 14 is formed on the bottom surface 2 a of the housing 2 . The exhaust port 14 is provided at a position closer to the front surface 2c than the center in the X-axis direction in the bottom surface 2a. The first intake port 12 and the exhaust port 14 are formed on the same surface of the housing 2, that is, the bottom surface 2a. The second intake port 13 and the exhaust port 14 are formed on different surfaces of the casing 2 . Further, the exhaust port 14 may be formed on at least one of the left and right side surfaces 2e and 2f, the front surface 2c, and the upper surface 2b of the housing 2 . That is, the exhaust port 14 may be formed on one of the left and right side surfaces 2e and 2f, the front surface 2c, and the upper surface 2b of the housing 2, or may be formed on a plurality of surfaces.

The second air passage 11 is an air passage that communicates the second intake port 13 and the exhaust port 14 . The second air passage 11 includes a second intake air passage 11a and a second exhaust air passage 11b. As shown in FIG. 4 , the second intake air passage 11a extends in the Z-axis direction so as to connect the left and right second intake ports 13, and extends from the second intake port 13 to the air blower 5a, which will be described later in the air cleaning unit 5. wind path. The second intake air passage 11 a is an air passage that takes in air outside the casing 2 from the second intake port 13 into the casing 2 and supplies the air to the air cleaning unit 5 . As shown in FIG. 2 , the second exhaust air passage 11 b is an air passage from the exhaust side of the blower 5 a of the air cleaning unit 5 to the exhaust port 14 . The second exhaust air passage 11b is an air passage for discharging the air purified by the air cleaning unit 5 toward the outside of the casing 2 from the exhaust port 14 .

The airflow generation part 3 is installed in the 1st air path 10, and is a device which generates a high-pressure airflow. The airflow generator 3 takes in air from the first intake port 12 into the first intake air passage 10a, and sends out a high-pressure air flow toward the nozzle 4 from the first exhaust air passage 10b. The airflow generation part 3 is arrange|positioned below the hand drying chamber 7 inside the housing|casing 2. The airflow generation part 3 has the 1st blade|wing 3a, and the 1st motor 3b, and rotates the 1st blade|wing 3a. The airflow generation part 3 is arranged so that the rotation axis and the horizontal axis are aligned. The airflow generation part 3 is arrange|positioned so that the 1st blade|wing 3a may face the back surface 2d, and the 1st motor 3b may face the front surface 2c. The first motor 3b is, for example, a DC brushless motor or a commutator motor.

The nozzle 4 communicates the first air passage 10 and the hand drying chamber 7 with each other, and ejects the air flow generated by the air flow generator 3 toward the hand drying chamber 7 . The nozzle 4 is provided inside the frame body 2 . The nozzle 4 includes: a plurality of front side first nozzles 4a, which are provided on the front side wall 7d; a plurality of back side first nozzles 4b, which are provided on the back side wall 7e; and a plurality of back side second nozzles 4c, which are provided on the front side wall 7d. It is provided in the back side wall 7e. The nozzles 4 are respectively disposed on the front side wall 7d and the back side wall 7e, so that the air flow hits the palm and the back of the user's hand at the same time, and blows off the moisture attached to the hand, making the hand dry.

The front side 1st nozzle 4a is provided in the vicinity of the upper surface opening part 7a in the front side wall 7d. The front side 1st nozzle 4a connects the 1st front side exhaust air passage 10c and the hand drying chamber 7 mutually. Although illustration is abbreviate|omitted, the some front side 1st nozzle 4a is provided so that it may be arranged in a row in the Z-axis direction. Each of the plurality of front-side first nozzles 4a penetrates through the small holes of the front-side side wall 7d. The opening shape of the first nozzle 4a on the front side is not particularly limited, but is a rectangular slit shape in this embodiment. The front side 1st nozzle 4a is installed so that it may incline toward the hand drying chamber 7 from the 1st front side exhaust air passage 10c so that it may become lower than a horizontal surface. The front side 1st nozzle 4a injects the air flow diagonally downward toward the hand drying chamber 7. As shown in FIG. In general, the amount of water adhering to the user's hand is greater on the palm side than on the back side of the hand. Therefore, the flow velocity of the air flow jetted from the front side first nozzle 4a is preferably faster than the flow velocity of the air flow jetted from each of the back side first nozzle 4b and the back side second nozzle 4c.

The back side 1st nozzle 4b is provided in the vicinity of the upper surface opening part 7a in the back side wall 7e. The back-side first nozzle 4b communicates the first back-side exhaust air passage 10d and the hand drying chamber 7 to each other. As shown in FIG. 1, the back surface side 1st nozzle 4b is provided so that it may line up in the Z-axis direction. Each of the plurality of back-side first nozzles 4b penetrates through a small hole in the back-side side wall 7e. The opening shape of the first nozzle 4b on the back side is not particularly limited, but is a rectangular slit shape in this embodiment. As shown in FIG. 2, the back surface side 1st nozzle 4b is installed so that it may incline toward the hand drying chamber 7 from the 1st back surface side exhaust air passage 10d below the horizontal surface. The back side 1st nozzle 4b injects the air flow diagonally downward toward the hand drying chamber 7. As shown in FIG.

The rear side second nozzle 4c is provided above the rear side first nozzle 4b in the rear side wall 7e. The rear side second nozzle 4c communicates the first rear side exhaust air passage 10d and the hand drying chamber 7 with each other. As shown in FIG. 1 , the plurality of rear-side second nozzles 4c are arranged in a row in the Z-axis direction. Each of the plurality of rear-side second nozzles 4c penetrates through the small hole of the rear-side side wall 7e. The shape of the opening of the second nozzle 4c on the back side is not particularly limited, but is square in this embodiment. The opening area of the second nozzle 4c on the back side is smaller than the opening area of the first nozzle 4b on the back side, and the air volume of the air flow injected from the second nozzle 4c on the back side is set to be smaller than that from the first nozzle 4b on the back side. The air volume of the jet air flow is smaller.

As shown in FIG. 2, the back surface side 2nd nozzle 4c is installed so that it may incline toward the hand drying chamber 7 from the 1st back surface side exhaust air passage 10d below the horizontal surface. The second nozzle 4c on the back side sprays an air flow obliquely downward toward the hand drying chamber 7. As shown in FIG. It is preferable that the ejection axis of the first nozzle 4b on the back side is inclined in a range of more than 0° downward and not more than 30° from the angle of the ejection axis of the second nozzle 4c on the back side. It is preferable that the back side 1st nozzle 4b and the back side 2nd nozzle 4c are spaced apart by at least 10 mm in the up-down direction. In this way, the air flow jetted from the back side first nozzle 4b and the air flow jetted from the back side second nozzle 4c can be prevented from interfering with each other when they collide with the user's hand.

In addition, the opening shape of the front side 1st nozzle 4a, the back side 1st nozzle 4b, and the back side 2nd nozzle 4c is not limited to the example shown in figure, For example, a circular shape may be sufficient. Moreover, the row number system of the front side 1st nozzle 4a, the back side 1st nozzle 4b, and the back side 2nd nozzle 4c may be a plurality of rows, and may be spaced apart in the Y-axis direction.

The air cleaning unit 5 is installed in the second air passage 11, and is a device that cleans the air. The air cleaning unit 5 takes in the air around the hand dryer 1 from the second intake port 13 into the second intake air passage 11a and cleans it, and then discharges the purified air from the exhaust port 14 to the outside of the casing 2. Air. The air cleaning unit 5 is arranged below the hand drying chamber 7 and the air flow generating unit 3 inside the casing 2 . The air cleaner 5 has a blower 5a and a discharge element 5e.

The blower 5a takes in air from the second intake port 13 into the second intake air passage 11a, and sends out an air flow toward the exhaust port 14 from the second exhaust air passage 11b. The type of the blower 5a is not particularly limited, and for example, it is a Sirocco fan. The blower 5a includes a casing 5b, a second blade 5c disposed inside the casing 5b, and a second motor 5d that rotates the second blade 5c. The blower 5a is arrange|positioned so that a rotation axis may correspond to a horizontal axis. The blower 5a is arranged so that the second blade 5c faces the front face 2c and the second motor 5d faces the back face 2d. The casing 5b is mounted inside the frame body 2 . The second motor 5d is, for example, a DC brushless motor or a commutator motor. The second motor 5d is fixed to the wall of the casing 5b.

The discharge element 5e is arranged on the exhaust side in the second air passage 11 rather than the blower 5a, and plays a role of making the air taken in from the second intake port 13 clean. The discharge element 5e is composed of a discharge electrode and a counter electrode. As the discharge electrode, a tungsten wire electrode is used. For the opposite electrode, a stainless steel plate was used. A voltage of DC 3kV to 7kV is applied to the discharge electrode. The opposing electrode is grounded. By applying a voltage to the discharge element 5e, a strong discharge or electric field space is generated between the discharge electrode and the opposite electrode, and viruses, bacteria, mold, and allergens passing through the discharge and electric field space can be removed or rendered inactive. By repeatedly taking in the air around the hand dryer 1 in the second air duct 11 and removing viruses or the like by the discharge element 5e or making it inactive, the air around the hand dryer 1 can be cleaned while continuing. Since it circulates, the air around the hand dryer 1 can be kept in a clean state. In addition, the air cleaner 5 may be an ion generator that has a discharge phenomenon to generate ions. That is, it is preferable that the air cleaner 5 has at least one of the discharge element 5e and the ion generator.

The discharge element 5e is arrange|positioned below the blower 5a, and is offset to the front of the blower 5a. Therefore, the air passing through the discharge element 5e flows from the back surface 2d side of the housing 2 toward the front surface 2c side. In front of the discharge element 5e, a maintenance panel 6 is arranged. A portion of the second exhaust air passage 11 b that is closer to the exhaust side than the discharge element 5 e extends vertically and communicates with the exhaust port 14 . Therefore, the air flow that has passed through the discharge element 5e collides with the maintenance panel 6 at a right angle, flows downward toward the exhaust port 14, and is exhausted from the exhaust port 14 to the outside of the casing 2. In toilets, hand-washing places, factories, and other hand-washing areas where the hand dryer 1 is installed, water is sometimes sprinkled on the floor when cleaning the floor. As shown in the present embodiment, the portion of the second exhaust air passage 11b that communicates with the exhaust port 14 extends in the vertical direction, and the air flows to the exhaust port 14 from top to bottom, thereby suppressing the passage of water spilled on the floor. The exhaust port 14 penetrates into the air cleaning unit 5 . In addition, as another means for suppressing the intrusion of water into the air cleaning unit 5, a labyrinth structure such as a thin plate may be provided inside the second exhaust air passage 11b, or a filter such as a filter may be provided in the exhaust port 14. A component with a tiny opening.

The maintenance panel 6 is detachably attached to the casing 2 and covers the air cleaning unit 5 in a state of being attached to the casing 2 . Above the maintenance panel 6, a fixing panel 18 which forms the front surface 2c of the frame body 2 is provided. The maintenance panel 6 is detachably attached to the fixed panel 18 and the bottom surface 2a. The maintenance panel 6 and the housing 5b are separated from each other in the X-axis direction. The space between the maintenance panel 6 and the casing 5b becomes the second air passage 11 .

On the upper end of the maintenance panel 6, a plurality of panel protrusions not shown that protrude upward are provided. In addition, the fixing panel 18 is provided with a recessed portion (not shown) into which the panel protrusions are fitted. The maintenance panel 6 is attached to the fixed panel 18 by fitting the panel protrusions into the recesses. The lower end portion of the maintenance panel 6 is provided with a fitting portion (not shown) for fitting into the bottom surface 2 a of the frame body 2 . The illustration is omitted, and the upper end of the maintenance panel 6 is provided with a rotation preventing rib, which is used to prevent the rotation of the maintenance panel 6 starting from the panel protrusion, and the lower end of the fixed panel 18 is provided with The holding portion of the rotation preventing rib is held. When removing the maintenance panel 6 , the fitting portion of the maintenance panel 6 is removed by grasping the left and right side surfaces of the lower part of the maintenance panel 6 with both hands and pulling it toward the front 2 c of the housing 2 . Next, by moving the maintenance panel 6 to slide downward, the rotation preventing rib is detached from the holding portion. Then, the maintenance panel 6 can be detached by turning the lower end of the maintenance panel 6 upward with the panel protrusion at the upper end of the maintenance panel 6 as a starting point. The length of the rotation preventing rib is the same as the length of the stroke of the panel protrusion pressing the contact portion of the panel detection portion 19 to be described later. That is, the length of the anti-rotation rib and the length of the stroke of the panel projection against the contact portion of the panel detection portion 19 are set so that the panel projection does not press the contact portion of the panel detection portion 19 when the anti-rotation rib is detached from the holding portion. status.

FIG. 5 is a front view of the hand dryer 1 according to Embodiment 1, and is a front view showing a state in which the maintenance panel 6 has been removed. The operation part 20 is provided in the casing 5b. In the operation part 20, a switch for switching the power supply of the airflow generating part 3, a switch for switching the air volume of the airflow generating part 3, a switch for switching the power supply for the heater 17 for heating the airflow, and a switch for switching the power supply of the air cleaning part 5 are provided. A switch, a switch for switching the air volume of the blower 5a of the air cleaning unit 5, a lamp for displaying each setting state, and the like. In a state where the maintenance panel 6 is attached to the casing 2 , the operation part 20 cannot be approached, and the operation part 20 cannot be seen from the outside of the casing 2 . With such a structure, since the position of the operation part 20 is not known, manipulations such as changing the setting of the hand dryer 1 by operating the operation part 20 can be prevented. In addition, the power supply lamp of the airflow generating part 3 and the power supply lamp of the air cleaning part 5 can be seen from the outside of the frame body 2 through a not-shown transmission part provided in the maintenance panel 6 . The permeable portion is, for example, a part of the maintenance panel 6 made transparent, and a hole penetrating the maintenance panel 6 .

The panel detection unit 19 detects whether or not the maintenance panel 6 is attached to the housing 2 . The panel detection unit 19 is arranged on the back side of the portion of the fixed panel 18 that overlaps the maintenance panel 6 . The panel detection unit 19 is arranged inside the housing 2 so that it cannot be seen when the maintenance panel 6 is removed from the housing 2 . In the panel detection unit 19, a mechanical switch is used. Mechanical switches are, for example, limit switches. When such a mechanical switch is used, it is possible to detect that the maintenance panel 6 is attached to the casing 2 by pressing a part of the maintenance panel 6 attached to the casing 2 against the contact portion of the panel detection unit 19 . In addition, an optical switch may be used for the panel detection unit 19 . The optical switch is, for example, an infrared sensor. In the case of using such an optical switch, the detection level of the optical switch changes when the maintenance panel 6 is attached to the casing 2, and the presence or absence of the maintenance panel 6 can be detected based on the change in the detection level. The panel detection part 19 is electrically connected to the control part 21 mentioned later. The detection result of the panel detection unit 19 is sent to the control unit 21 .

FIG. 6 is a functional block diagram of the hand dryer 1 according to the first embodiment. The control unit 21 controls the operation and stop of the air flow generating unit 3 and controls the operation and stop of the air cleaning unit 5 . The control unit 21 operates the air flow generating unit 3 and the air cleaning unit 5 when the user's hand is detected by the first hand detecting unit 8 and the second hand detecting unit 9 . The control unit 21 operates the air cleaning unit 5 after the air flow generating unit 3 is stopped. The control unit 21 operates the air cleaning unit 5 at the maximum air volume after the air flow generating unit 3 is stopped until a preset set time elapses, and after the set time elapses, the air cleaning unit 5 operates at a smaller air volume than the maximum air volume. Air flow operation. The control unit 21 stops the air cleaning unit 5 during the operation of the air flow generating unit 3 . The control unit 21 detects the removal of the maintenance panel 6 by the panel detection unit 19 while the airflow generating unit 3 and the air cleaning unit 5 are energized, and stops the energization of the airflow generating unit 3 and the air cleaning unit 5 .

Next, the hardware configuration of the control unit 21 according to the first embodiment will be described. The control unit 21 is realized by a processing circuit. The processing circuit can also be a control circuit with a processor or a dedicated hardware. FIG. 7 is a block diagram showing the hardware configuration of the control unit 21 according to the first embodiment. The control circuit for realizing the control unit 21 is shown in FIG. 7 and includes a processor 21a and a memory 21b. The processor 21a and the memory 21b can exchange data with each other, for example, through a bus. The processor 21a executes the function of the control unit 21 by reading out and executing the program stored in the memory 21b. The processor 21a includes, for example, one or more of a CPU (Central Processing Unit) and a DSP (Digital Signal Processor).

The memory 21b includes one or more of RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), and EEPROM (registered trademark) (Electrically Erasable Programmable Read Only Memory). In addition, the program stored in the memory 21b is provided by, for example, a recording medium. The recording medium includes one or more of non-volatile or volatile semiconductor memories, magnetic disks, floppy disks, optical disks, compact disks and DVDs (Digital Versatile Discs). In addition, the program stored in the memory 21b may be provided by a communication medium. When the processing circuit is dedicated hardware, the processing circuit includes, for example, at least one or more of an FPGA (Field Programmable Gate Array), an ASIC (Application Specific Integrated Circuit), and a system LSI (Large Scale Integration).

Next, with reference to FIG. 2, the operation|movement of the hand drying apparatus 1 at the time of drying a user's hand is demonstrated.

When the user's hand is inserted into the hand drying chamber 7 from the upper surface opening 7a or the side opening 7b of the housing 2 and reaches the first hand detection part 8 and the second hand detection part 9, the first hand detection part 8 and the second hand detection part 9 The second hand detection unit 9 detects the user's hand inserted into the hand drying chamber 7 . Specifically, the first hand detection unit 8 detects the user's hand inserted into the hand drying chamber 7 by blocking the light projected from the first light emitting unit 8a toward the first reflection surface 8b. Furthermore, the second hand detection unit 9 detects the user's hand inserted into the hand drying chamber 7 by blocking the light projected from the second light emitting unit 9a toward the second light receiving unit 9b.

Then, the control unit 21 operates the airflow generation unit 3 when both the first hand detection unit 8 and the second hand detection unit 9 detect the user's hand inserted into the hand drying chamber 7 . When the air flow generating unit 3 is operated, the air outside the casing 2 passes through the intake filter 15 and is sucked into the first intake air passage 10 a from the first intake port 12 , and generates air from the first intake port 12 . Air flow to nozzle 4. The airflow generated by the airflow generating portion 3 is branched into a path flowing from the exhaust side of the airflow generating portion 3 to the first front side exhaust air passage 10c, and the exhaust side from the airflow generating portion 3. A path that flows to the first rear side exhaust air passage 10d.

The air flow which flows into the 1st front side exhaust air passage 10c is sprayed toward the hand drying chamber 7 from the front side 1st nozzle 4a. The air flow which flows into the 1st back surface side exhaust air passage 10d is sprayed toward the hand drying chamber 7 from each nozzle of the back surface side 1st nozzle 4b and the back surface side 2nd nozzle 4c. The jetted air flow collides with the user's hand to blow off the moisture adhering to the user's hand, so that the wet hand after washing can be dried. The water blown off is scattered toward the hand drying chamber 7, and is stored in the drainage tank 16 through a drainage passage, which is not shown, through a drainage port formed in the bottom wall 7c. When the user's hand is withdrawn from the hand drying chamber 7, the first hand detection unit 8 and the second hand detection unit 9 cannot detect the user's hand. The control unit 21 stops the airflow generation unit 3 when at least one of the first hand detection unit 8 and the second hand detection unit 9 does not detect the user's hand.

In the present embodiment, the jet axis of the first nozzle 4b on the back side is inclined in the range of more than 0° and 30° or less downward than the angle of the jet axis of the second nozzle 4c on the back side. Moreover, the back side 1st nozzle 4b and the back side 2nd nozzle 4c are spaced apart by at least 10 mm in the up-down direction. In this way, the air flow jetted from the back side first nozzle 4b and the air flow jetted from the back side second nozzle 4c do not converge until the back of the user's hand hits. Furthermore, the air flow jetted from the back side first nozzle 4b becomes an air flow that flows upward along the back of the user's hand when it collides, and the air jet jetted from the back side second nozzle 4c is jetted against the back of the user's hand. It becomes the airflow which flows down along the hand, and both airflows converge on the back of the hand, and flow while rotating toward the back side wall 7e. Thereby, it is possible to suppress upward discharge of the upward airflow from the hand drying chamber 7, which is generated when the airflow injected from the rear side first nozzle 4b collides with the back of the user's hand. Furthermore, the moisture blown off from the back of the hand catches on the swirling airflow and goes toward the back side wall 7e, so that the moisture can be suppressed from scattering from the hand drying chamber 7 toward the user. In addition, although the illustration is omitted, the front-side second nozzle may be arranged above the front-side first nozzle 4a so as to be away from the front-side first nozzle 4a, and the front-side second nozzle may be used to disperse the first front-side exhaust air. The path 10c and the hand drying chamber 7 communicate with each other. In this way, the same effect as that obtained by using the first nozzle 4b on the back side and the second nozzle 4c on the back side can be obtained. That is, on the palm side, the upward airflow discharged from the hand drying chamber 7 can be suppressed, and the scattering of moisture from the hand drying chamber 7 toward the user can be suppressed.

Next, with reference to FIG. 8, an example of the operation|movement at the time of the air cleaning of the hand dryer 1 is demonstrated. FIG. 8 is a flowchart for explaining the operation of the hand dryer 1 according to Embodiment 1 when the air is cleaned.

When the power supply of the hand dryer 1 is turned ON, in step S1, the hand dryer 1 is put into a standby state. In the standby state of the hand dryer 1 , the airflow generating unit 3 and the air cleaning unit 5 are stopped, but the airflow generating unit 3 and the air cleaning unit 5 are energized.

Next, it moves to step S2. In step S2, the control unit 21 determines whether or not a user has been detected by both the first hand detection unit 8 and the second hand detection unit 9 based on the detection signals from the first hand detection unit 8 and the second hand detection unit 9. hand. When step S2 is No, that is, when it is determined that at least one of the first hand detection unit 8 and the second hand detection unit 9 has not detected the user's hand, the determination of step S2 is repeated.

On the other hand, when Yes in step S2, that is, when it is determined that both the first hand detection unit 8 and the second hand detection unit 9 have detected the user's hand, the process proceeds to step S3. In step S3 , the control unit 21 operates the air flow generating unit 3 .

Then, it moves to step S4. In step S4, the control unit 21 determines whether or not a user has been detected by both the first hand detection unit 8 and the second hand detection unit 9 based on the detection signals from the first hand detection unit 8 and the second hand detection unit 9. hand. When Yes in step S4, that is, when it is determined that both the first hand detection unit 8 and the second hand detection unit 9 have detected the user's hand, the determination of step S4 is repeated.

On the other hand, when No in step S4, that is, when it is determined that at least one of the first hand detection unit 8 and the second hand detection unit 9 has not detected the user's hand, the process proceeds to step S5. In step S5 , the control unit 21 stops the air flow generating unit 3 .

Next, it moves to step S6. In step S6, the control unit 21 operates the air cleaning unit 5 at the maximum air volume. Hereinafter, the mode in which the air cleaner 5 is operated at the maximum air volume is referred to as a "strong operation mode".

Then, it moves to step S7. In step S7 , the control unit 21 determines whether or not the set time has elapsed since the start of the operation of the air cleaning unit 5 . When step S7 is No, that is, when it is judged that the set time has not elapsed since the start of operation of the air cleaning unit 5, the judgment of step S7 is repeatedly performed.

On the other hand, when it is Yes in step S7, that is, when it is determined that the set time has elapsed since the time when the operation of the air cleaning unit 5 was started, the process proceeds to step S8. In step S8, the control part 21 operates the air cleaning part 5 with the air volume smaller than the maximum air volume. Hereinafter, the mode in which the air cleaning unit 5 is operated with an air volume smaller than the maximum air volume is referred to as a "weak operation mode".

Next, it moves to step S9. In step S9, the control unit 21 stops the air cleaning unit 5 when a predetermined time has elapsed from the time when the operation of the air cleaning unit 5 started. The fixed time is longer than the set time.

Then, it moves to step S10. In step S10, the hand dryer 1 is put into a standby state. The above operations from step S1 to step S10 are repeated until the power of the hand dryer 1 is turned off.

In addition, the air cleaning operation of the hand dryer 1 is not limited to the above-mentioned operation example. For example, the air cleaner 5 may be continuously operated in a state where the switch for switching the power supply of the air cleaner 5 provided in the operation unit 20 is set to "ON" and the hand dryer 1 is energized. In this way, the air around the hand dryer 1 can be cleaned regardless of the operation of the air flow generating part 3 .

In addition, the control unit 21 may control the operation and stop of the air cleaning unit 5 according to the day of the week and the time. In this case, the hand dryer 1 has a timer for grasping the day of the week and the time, and the control unit 21 only needs to acquire the day of the week and the time from the timer. In offices, factories, etc., where the hand dryer 1 is generally installed, the number of times the hand dryer 1 is used at night and on holidays is small. Therefore, the control unit 21 may automatically control the air cleaning unit 5 not to operate at night and on holidays. Alternatively, it is automatically controlled so that the air cleaner 5 is switched to the weak operation mode. In this way, the power consumption of the hand dryer 1 can be suppressed. In addition, in the case of few users, it is not necessary to operate the air cleaning unit 5 in the strong operation mode, but the air cleaning unit 5 is operated in the weak operation mode, and the air around the hand dryer 1 can be sufficiently cleaned.

In addition, the control unit 21 may have a memory unit (not shown), and the memory unit may store data on the operation frequency and operation time of the air flow generating unit 3, and the operation frequency and operation time of the air cleaning unit 5. and operating mode data. The control unit 21 can switch the operation mode of the air cleaning unit 5 according to the data stored in the memory unit. For example, the control unit 21 calculates the time period in which the hand dryer 1 is frequently used from the data stored in the memory unit, and can switch the air cleaning unit 5 to the strong operation mode in advance before the time period when the number of times of use is high. Thereby, the air around the hand dryer 1 can be cleaned in advance before the frequency of use of the hand dryer 1 is increased.

In addition, the control unit 21 may store the number of operations per fixed time, and switch the operation mode of the air cleaning unit 5 according to whether the number of operations per fixed time exceeds the set number. When the number of times of use of the hand dryer 1 is small, the number of operations per fixed time is small, and the necessity of making the air around the hand dryer 1 clean is low. On the other hand, when the frequency of use of the hand dryer 1 increases, the number of operations per fixed time increases, and the air around the hand dryer 1 needs to be clean. Therefore, the control unit 21 switches the air cleaning unit 5 to the strong operation mode when the number of operations per fixed time exceeds the set number, and switches the air cleaning unit 5 to the strong operation mode when the number of operations per fixed time does not exceed the set number. Switch to weak operation mode.

Next, referring to FIG. 9 , the operation of the hand dryer 1 when the maintenance panel 6 is removed will be described. FIG. 9 is a flowchart illustrating the operation of the hand dryer 1 according to the first embodiment when the maintenance panel 6 has been removed.

When the power supply of the hand dryer 1 is turned ON, in step S11, the hand dryer 1 is put into a standby state. In the standby state of the hand dryer 1 , the airflow generating unit 3 and the air cleaning unit 5 are stopped, but the airflow generating unit 3 and the air cleaning unit 5 are energized.

Next, it moves to step S12. In step S12 , the control unit 21 determines whether or not the maintenance panel 6 has been detected based on the detection signal of the panel detection unit 19 . In the case of Yes in step S12, that is, in the case of determining that the maintenance panel 6 is detected, the determination in step S12 is repeatedly performed.

On the other hand, when No in step S12, that is, when it is determined that the maintenance panel 6 has not been detected, the process proceeds to step S13. In step S13 , the control unit 21 stops the energization of the airflow generating unit 3 and the air cleaning unit 5 . At this time, the control unit 21 momentarily stops the energization of the discharge element 5e of the air cleaning unit 5 . The operations of the above steps S11 to S13 are repeated until the power of the hand dryer 1 is turned OFF.

Next, the effect of the hand dryer 1 of this embodiment is demonstrated.

The air flow ejected from the nozzle 4 shown in FIG. 2 is discharged around the frame body 2 from the top opening 7a and the side opening 7b after hitting the user's hand and the surface of the inner wall of the hand drying chamber 7 . . In addition, in the present embodiment, by providing the rear side second nozzle 4c, the amount of air discharged from the upper surface opening 7a is smaller than that in the case where the rear side second nozzle 4c is not provided. The air exhausted from the top opening 7a and the side opening 7b is in contact with the user's hand and the surface of the inner wall of the hand drying chamber 7, so it may become unsanitary depending on the degree of cleanliness of the user. Moreover, the hand drying room 7 is regularly cleaned, but it may become unsanitary depending on the frequency of cleaning and the cleaning method.

In the present embodiment, the hand dryer 1 has a box-shaped frame 2, and the box-shaped frame 2 forms: a hand drying chamber 7, which is open on at least one surface and can insert hands; The air passage 10; and the second air passage 11 are independent air passages from the first air passage 10, and air flows. Further, the hand dryer 1 includes: an air flow generating part 3 installed in the first air passage 10 to generate an air flow; and an air cleaning part 5 installed in the second air passage 11 to make the air clean. In the frame body 2, a first air inlet 12 is formed for inhaling the air outside the frame body 2 in the first air passage 10; The air from the outside of the frame body 2 is sucked in; and the exhaust port 14 is used to discharge the air in the second air passage 11 purified by the air cleaning unit 5 to the outside of the frame body 2 . The first intake port 12 and the second intake port 13 are formed independently of each other. With these structures, the air discharged from the hand drying chamber 7 is guided through the second air passage 11 from the second intake port 13 to the air cleaning unit 5, and after being purified by the air cleaning unit 5, the air is discharged from the exhaust port. 14 is discharged to the outside of the casing 2 . Therefore, the air around the hand dryer 1 can be made clean. That is, the air discharged from the hand drying chamber 7 can be efficiently cleaned by the air cleaning unit 5 before the air discharged from the hand drying chamber 7 is diffused.

The air exhausted from the top opening 7a shown in FIG. 3 is easily exhausted to the outside from the ventilation fan installed on the ceiling of the installation space of the hand dryer 1, but the air exhausted from the side opening 7b is difficult to be taken out by the ventilation fan It is easy to remain around the hand dryer 1 . In this regard, in the present embodiment, the second intake port 13 is formed on the same surface as the side opening 7b of the hand drying chamber 7 of the housing 2, that is, the side surface 2e of the housing 2. , 2f, and the air discharged from the side opening 7b is easily sucked into the second intake port 13 . Therefore, the air discharged from the side opening portion 7b can be efficiently cleaned by the air cleaning portion 5 . Furthermore, as shown in FIG. 2 , in this embodiment, the first intake port 12 and the second intake port 13 are formed independently of each other, along the surface of the frame body 2 from the edge of the side opening 7b to the second The shortest distance of the air inlet 13 is shorter than the shortest distance from the edge of the side opening 7b to the first air inlet 12 along the surface of the frame body 2, so that the air discharged from the side opening 7b is less than The first intake port 12 is more easily sucked into the second intake port 13 . Therefore, the air discharged from the side opening portion 7b can be efficiently cleaned by the air cleaning portion 5 .

In the present embodiment, as shown in FIG. 2 , the first intake port 12 and the exhaust port 14 are formed on the same surface of the frame body 2, that is, the bottom surface 2a of the frame body 2, and the first intake port 12 and the exhaust port 14 are formed in the same surface of the frame body 2, that is, the bottom surface 2a of the frame body 2 is separated from the exhaust port. 14 After the air purified by the air cleaning unit 5 is discharged, it is easily sucked into the first intake port 12 . Therefore, since the air cleaned by the air cleaning unit 5 is sprayed from the nozzle 4 to the hand drying chamber 7, the user's hands can be hygienically dried.

In the present embodiment, as shown in FIG. 2 , since the second intake port 13 and the exhaust port 14 are formed on different surfaces of the casing 2 , the exhaust port 14 is discharged by the air cleaning unit 5 After it becomes clean air, it is difficult to be sucked into the second intake port 13 .

There is also a method of purifying the air by arranging the discharge element 5e in the first air duct 10 shown in FIG. Therefore, when the air is purified by the air flow generating unit 3, the amount of power usage is greatly increased. In this regard, in the present embodiment, a second air passage 11 is provided that is independent of the first air passage 10 in which the airflow generating portion 3 is arranged, and a fan 5 a and a discharge element 5 e are arranged in the second air passage 11 . Air cleaning section 5. Thereby, since the second motor 5d of the air cleaning unit 5 can use a motor with lower power consumption than the first motor 3b of the air flow generating unit 3, it is possible to reduce the amount of power usage.

In the present embodiment, as shown in FIG. 6 , the hand dryer 1 includes a control unit 21 that detects the user's hand by the first hand detection unit 8 and the second hand detection unit 9 , the air flow generating unit 3 and the air cleaning unit 5 are operated. Moreover, as shown in FIG. 2, the hand dryer 1 includes: a maintenance panel 6, which is detachably attached to the frame body 2, and covers the air cleaning part 5 in the state of being attached to the frame body 2; and a panel detection The portion 19 detects whether or not the maintenance panel 6 is attached to the housing 2 . The control unit 21 detects the removal of the maintenance panel 6 by the panel detection unit 19 while the airflow generating unit 3 and the air cleaning unit 5 are energized, and stops the energization of the discharge element 5e of the air cleaning unit 5 . With these constitutions, it is possible to prevent an operator who removes the maintenance panel 6 and performs maintenance work on the airflow generating portion 3, the air cleaning portion 5, and the like from coming into contact with the discharge element 5e in an energized state.

In the present embodiment, the control unit 21 detects the removal of the maintenance panel 6 by the panel detection unit 19 while the airflow generating unit 3 and the air cleaning unit 5 are energized, and stops the airflow generating unit 3 . Thereby, the jet of air flow from the nozzle 4 can be prevented during maintenance work.

In the present embodiment, the control unit 21 stops the air cleaning unit 5 during the operation of the airflow generating unit 3 , and operates the air cleaning unit 5 after the stopping of the airflow generating unit 3 . In addition, the control unit 21 operates the air cleaning unit 5 at the maximum air volume after the air flow generating unit 3 is stopped until a preset set time elapses, and after the set time elapses, the air cleaning unit 5 is operated at an air volume smaller than the maximum air volume. run. With these constitutions, the air discharged from the hand drying chamber 7 shown in FIG. 2 can be quickly cleaned. In addition, since the air volume of the air cleaning unit 5 decreases after the air flow generating unit 3 is stopped and a preset set time elapses, it can contribute to energy saving compared with the case where the air cleaning unit 5 continues to operate at the maximum air volume. . In addition, since the rotation speed of the second motor 5d of the air cleaning unit 5 is reduced, noise generated from the air cleaning unit 5 is suppressed, and the quietness of the air cleaning unit 5 can be improved.

In addition, in the present embodiment, as shown in FIG. 2 , the first air passage 10 in which the air flow generating portion 3 is arranged is provided and the second air passage 11 is independent, and the air cleaning portion 5 is arranged in the second air passage 11 . It has the blower 5a which is independent from the air flow generation part 3 system. Thereby, when the air flow generating part 3 is operated to dry hands, the air can be cleaned by the air cleaning part 5 . Embodiment 2

10, the hand dryer 1A of Embodiment 2 is demonstrated. Fig. 10 is a side view of the hand dryer 1A according to the second embodiment. In the present embodiment, the position of the second intake port 13 is different from that of the first embodiment described above. In addition, in Embodiment 2, the same code|symbol is attached|subjected to the part which overlaps with the above-mentioned Embodiment 1, and description is abbreviate|omitted. In FIG. 10 , the second air passage 11 , the second intake port 13 , the exhaust port 14 , and the hand drying chamber 7 are shown for easy understanding, and the air flow generating unit 3 , the air cleaning unit 5 , and the first air stream are omitted. Illustration of road 10 etc.

The upper surface 2b of the frame body 2 is formed in a stepped shape. The second intake port 13 is formed on the vertical surface facing the hand drying chamber 7 in the upper surface 2b of the housing 2 on the back surface 2d side of the housing 2 rather than the hand drying chamber 7 . The second intake port 13 is arranged in the vicinity of the upper surface opening portion 7a. The second intake port 13 is arranged above the upper surface opening 7a and closer to the rear surface 2d than the upper surface opening 7a. The hand drying chamber 7 is opened only on the upper surface 2b of the housing 2 in this embodiment, but may also be opened on the left and right side surfaces 2e and 2f of the housing 2 . In this case, the second intake port 13 may be arranged in the vicinity of the side opening portion 7b.

The second air duct 11a of the second air duct 11 extends backward from the second air inlet 13 toward the rear surface 2d, then extends downward along the rear surface 2d, and further extends forward toward the air duct where the air cleaning unit 5 is disposed. . The second exhaust air passage 11b of the second air passage 11 extends in the vertical direction along the front surface 2c of the housing 2 .

In the present embodiment, the air discharged from the upper surface opening portion 7a is more easily sucked from the second intake port 13 by the air cleaning portion 5 (not shown). Therefore, the air discharged from the upper surface opening portion 7a can be efficiently cleaned by the air cleaning portion 5 .

11 is a side view of a hand dryer 1B according to Modification 1 of Embodiment 2. FIG. The second intake port 13 is formed on the upper surface 2b of the housing 2 on the side closer to the front surface 2c of the housing 2 than the hand drying chamber 7 is. That is, the second intake port 13 is formed between the user and the hand drying chamber 7 . The second intake port 13 is arranged in the vicinity of the upper surface opening portion 7a. The second intake port 13 is arranged above the upper surface opening 7a and closer to the front surface 2c than the upper surface opening 7a. The hand drying chamber 7 is opened only on the upper surface 2b of the housing 2 in this embodiment, but may also be opened on the left and right side surfaces 2e and 2f of the housing 2 . In this case, the second intake port 13 may be arranged in the vicinity of the side opening portion 7b.

The second air duct 11a of the second air duct 11 extends downward from the second air inlet 13 along the front surface 2c, then extends backward, and further extends downward toward the air duct where the air cleaner 5 is disposed. The second exhaust air passage 11b of the second air passage 11 extends in the vertical direction along the front surface 2c of the housing 2 .

In the present embodiment, the air to the user from the air discharged from the upper surface opening 7a is more easily inhaled from the second intake port 13 through the air cleaner 5 (not shown). Therefore, the air discharged from the upper surface opening portion 7a can be efficiently cleaned by the air cleaning portion 5 .

FIG. 12 is a side view of a hand dryer 1C according to Modification 2 of Embodiment 2. FIG. The configuration of the second intake port 13 and the second intake air passage 11a is the same as that of the second embodiment. The exhaust port 14 is formed on the upper surface 2b of the housing 2 on the side closer to the front surface 2c of the housing 2 than the hand drying chamber 7 is. That is, the exhaust port 14 is formed between the user and the hand drying chamber 7 . The exhaust port 14 is arranged in the vicinity of the upper surface opening portion 7a. The exhaust port 14 is arranged above the upper surface opening 7a, and is closer to the front surface 2c than the upper surface opening 7a. The hand drying chamber 7 is opened only on the upper surface 2b of the housing 2 in this embodiment, but may also be opened on the left and right side surfaces 2e and 2f of the housing 2 . In this case, the exhaust port 14 may be arranged in the vicinity of the side opening portion 7b.

The second exhaust air passage 11b of the second air passage 11 extends upward from the air passage in which the air cleaner 5 is arranged, then extends forward toward the front face 2c, and further extends upward along the front face 2c.

In the present embodiment, since the clean air by the air cleaning unit 5 is discharged between the user and the hand drying chamber 7, the hands can be dried by the clean air. In addition, the exhaust port 14 may be opened toward the hand drying chamber 7 . In this way, the clean air discharged from the exhaust port 14 easily flows into the hand drying chamber 7 . Therefore, when the air cleaning unit 5 is operated at the same time as drying the user's hand, the clean air can collide with the user's hand, and the user's hand can be hygienically dried. Furthermore, when the user's hands are not dried, the surface of the inner wall of the hand drying chamber 7 can be kept clean by discharging clean air from the exhaust port 14 toward the hand drying chamber 7 .

The configuration shown in the above embodiment is an example, and may be combined with other well-known techniques, or the embodiments may be combined with each other, and a part of the configuration may be omitted or changed within the scope of the gist.

1, 1A, 1B, 1C: Hand dryer 2: Frame 2a: Bottom surface 2b: Above 2c: front 2d: back 2e, 2f: side 2g: shielding part 3: Air flow generation part 3a: 1st blade 3b: 1st motor 4: Nozzle 4a: No. 1 nozzle on the front side 4b: No. 1 nozzle on the back side 4c: The second nozzle on the back side 5: Air Purification Department 5a: Blower 5b: Shell 5c: 2nd blade 5d: 2nd motor 5e: Discharge element 6: Maintenance panel 7: Hand drying room 7a: upper opening 7b: Side opening 7c: Bottom wall 7d: Front side wall 7e: Back side wall 8: 1st hand inspection department 8a: 1st light-emitting part 8b: 1st reflective surface 8c: 1st light-receiving part 9: 2nd hand inspection department 9a: Second light-emitting part 9b: 2nd light-receiving part 10: The first wind path 10a: 1st suction air path 10b: 1st exhaust air passage 10c: 1st front side exhaust air duct 10d: 1st rear side exhaust air duct 11: The second wind path 11a: 2nd suction air path 11b: 2nd exhaust air passage 12: The first suction port 13: The second intake port 14: exhaust port 15: Suction filter 16: Gutter 17: Heater 18: Fixed panel 19: Panel Inspection Department 20: Operation Department 21: Control Department 21a: Processor 21b: Memory

1 is a perspective view showing a hand dryer according to Embodiment 1. FIG. Fig. 2 is a cross-sectional view of the hand dryer according to Embodiment 1, and is a cross-sectional view taken along the line II-II shown in Fig. 1 . Fig. 3 is a side view of the hand dryer according to the first embodiment. Fig. 4 is a cross-sectional view of the hand dryer according to the first embodiment, and is a cross-sectional view taken along the line IV-IV shown in Fig. 3 . [ Fig. 5 ] is a front view of the hand dryer according to Embodiment 1, and is a front view showing a state in which the maintenance panel has been removed. 6] It is a functional block diagram of the hand dryer of Embodiment 1. [FIG. FIG. 7 is a block diagram showing the hardware configuration of the control unit according to the first embodiment. 8] It is a flowchart explaining the operation|movement at the time of air cleaning of the hand dryer of Embodiment 1. [FIG. 9] It is a flowchart explaining the operation|movement when the maintenance panel of the hand dryer of Embodiment 1 is removed. Fig. 10 is a side view of the hand dryer according to the second embodiment. 11 is a side view of a hand dryer according to Modification 1 of Embodiment 2. FIG. 12 is a side view of a hand dryer according to Modification 2 of Embodiment 2. FIG.

1: Hand drying device

2: Frame

2a: Bottom surface

2b: Above

2c: front

2d: back

3: Air flow generation part

3a: 1st blade

3b: 1st motor

4: Nozzle

4a: No. 1 nozzle on the front side

4b: No. 1 nozzle on the back side

4c: The second nozzle on the back side

5: Air Purification Department

5a: Blower

5b: Shell

5c: 2nd blade

5d: 2nd motor

5e: Discharge element

6: Maintenance panel

7: Hand drying room

7a: upper opening

7c: Bottom wall

7d: Front side wall

7e: Back side wall

8: 1st hand inspection department

8a: 1st light-emitting part

8b: 1st reflective surface

8c: 1st light-receiving part

9: 2nd hand inspection department

9a: Second light-emitting part

9b: 2nd light-receiving part

10: The first wind path

10a: 1st suction air path

10b: 1st exhaust air passage

10c: 1st front side exhaust air duct

10d: 1st rear side exhaust air duct

11: The second wind path

11a: 2nd suction air path

11b: 2nd exhaust air passage

12: The first suction port

13: The second intake port

14: exhaust port

15: Suction filter

16: Gutter

17: Heater

18: Fixed panel

19: Panel Inspection Department

A: Indicates the flow of air in the first air path

B: Indicates the flow of air in the second air path

Claims (14)

A hand drying device is characterized by: include: The box-shaped frame is formed: a hand drying chamber, which is open on at least one side and can be inserted into the hand; a first air passage through which air flows; and a second air passage, which is independent of the first air passage. the way, and the air flows; an air flow generating part, which is arranged in the first air passage and generates an air flow; a nozzle, which communicates the first air passage and the hand drying chamber with each other, and sprays the air flow generated by the air flow generating part toward the hand drying chamber; and The air cleaning part is installed in the second air passage and makes the air clean; The casing is formed with: a first air inlet for inhaling air outside the casing in the first air passage; and a second air inlet for inhaling air in the second air passage the air outside the frame body; and an exhaust port for discharging the air in the second air duct purified by the air cleaning part to the outside of the frame body; The first intake port and the second intake port are formed independently of each other. The hand drying device of claim 1, wherein the shortest distance from the edge of the opening of the hand drying chamber to the second suction port along the surface of the frame is longer than that from the hand drying chamber along the surface of the frame The shortest distance from the edge of the opening to the first suction port is shorter. The hand drying device of claim 1, wherein the second air inlet is formed on the same surface of the frame as the surface on which the hand drying chamber is opened. The hand dryer of claim 1, wherein the second air inlet is formed on at least one of the side surface, the front surface, and the upper surface of the frame body. The hand dryer of claim 1, wherein the second air inlet and the air outlet are formed on different surfaces of the frame. The hand dryer of claim 1, wherein the first air inlet and the air outlet are formed on the same surface of the frame. The hand drying device of claim 1, wherein the exhaust port is formed on at least one of the side surface, the front surface and the upper surface of the frame body. The hand drying device of claim 1, wherein the air cleaning part has at least one of a discharge element and an ion generator. The hand drying device of any one of claims 1 to 8, wherein include: a hand detection unit, which detects a hand inserted in the hand drying chamber; and The control unit operates the airflow generating unit and the air cleaning unit when a hand is detected by the hand detection unit. The hand drying device of claim 9, wherein include: A maintenance panel is detachably attached to the frame, and covers the air cleaning portion in a state of being attached to the frame; and a panel detection unit for detecting whether the maintenance panel is mounted on the frame; The control unit detects the removal of the maintenance panel by the panel detection unit during the energization of the air flow generating unit and the air cleaning unit, and stops the energization of the air cleaning unit. The hand drying device of claim 10, wherein the control unit detects the removal of the maintenance panel by the panel detection unit during the energization of the airflow generating unit and the air cleaning unit, and stops generating the airflow and the energization of the air cleaning department. The hand drying device of claim 9, wherein the control unit operates the air cleaning unit after the air flow generating unit is stopped. The hand drying device of claim 9, wherein the control unit operates the air cleaning unit at a maximum air volume after the air flow generating unit stops until a preset set time elapses, and after the set time elapses, the air The cleaning section operates with an air volume smaller than the maximum air volume. The hand drying device of claim 9, wherein the control unit stops the air cleaning unit while the air flow generating unit is in operation.

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