JP7378661B2 - hand dryer - Google Patents

Description

The present disclosure relates to a hand drying device for drying wet hands after washing.

In order to keep hands hygienic, it is necessary to wash hands and to dry wet hands hygienically after washing. 2. Description of the Related Art Conventionally, as a device for drying wet hands after washing, a hand drying device is known that blows off moisture attached to the hands by jetting high-speed airflow to dry the hands. In addition, hand drying devices have been developed that can not only dry hands but also purify the air inside the hand drying chamber into which the user's hands are inserted.

For example, Patent Document 1 discloses a casing in which a hand drying chamber into which a user's hand can be inserted is formed, a blower unit installed in the casing and blowing air toward the hand drying chamber, and A hand drying device is disclosed that includes an electrostatic atomizer installed to generate an atomized mist in a hand drying chamber. The hand drying device disclosed in Patent Document 1 takes air around the hand drying device into the inside of the housing, and generates an air flow using the blower section. Further, the hand drying device disclosed in Patent Document 1 generates atomized mist in the hand drying chamber by operating the electrostatic atomizer during the blowing operation of the blowing section. Thereby, the hand inserted into the hand drying chamber can be dried by the air flow, and the air in the hand drying chamber can be purified by the atomized mist.

Japanese Patent Application Publication No. 2008-237609

However, although the hand drying device disclosed in Patent Document 1 can clean the air in the hand drying room with the atomized mist, there is a problem in that it cannot clean the air around the hand drying device. .

The present disclosure has been made in view of the above, and an object of the present disclosure is to obtain a hand drying device that can clean the air around the hand drying device.

In order to solve the above-mentioned problems and achieve the objective, a hand drying device according to the present disclosure includes a hand drying chamber that is open on at least one side and into which a hand can be inserted, a first air path through which air flows, A box-shaped casing is formed with a second air path that is independent of the first air path and through which air flows, and is installed within the first air path to generate an air flow. an air flow generator, a nozzle that communicates the first air path and the hand drying chamber with each other, and injects the air flow generated by the air flow generator toward the hand drying chamber; and an air purifying section installed in the air purifier to purify the air. The housing includes a first intake port for sucking air outside the housing into the first air passage, and a second intake port for sucking air outside the housing into the second air passage. A port and an exhaust port are formed for discharging the air in the second air passage cleaned by the air cleaning section to the outside of the casing. The first intake port and the second intake port are formed independently of each other. The second air path is an air path that extends from the second air intake port to the exhaust port without passing through the hand drying room.

The hand drying device according to the present disclosure has the effect that the air around the hand drying device can be purified.

A perspective view showing a hand drying device according to Embodiment 1. FIG. 2 is a cross-sectional view of the hand drying device according to the first embodiment, taken along the line II-II shown in FIG. 1. Side view of the hand drying device according to Embodiment 1 4 is a sectional view of the hand drying device according to Embodiment 1, taken along line IV-IV shown in FIG. 3. FIG. FIG. 2 is a front view of the hand drying device according to the first embodiment, with the maintenance panel removed. Functional block diagram of hand drying device according to Embodiment 1 Block diagram showing the hardware configuration of the control unit according to the first embodiment Flowchart illustrating the operation of the hand drying device according to the first embodiment during air purification Flowchart explaining the operation when the maintenance panel of the hand dryer according to the first embodiment is removed Side view of the hand drying device according to Embodiment 2 Side view of the hand drying device according to Modification 1 of Embodiment 2 Side view of the hand drying device according to Modification 2 of Embodiment 2

Below, a hand drying device according to an embodiment will be described in detail based on the drawings.

Embodiment 1.
FIG. 1 is a perspective view showing a hand drying device 1 according to the first embodiment. FIG. 2 is a sectional view of the hand drying device 1 according to the first embodiment, and is a sectional view taken along the line II-II shown in FIG. Hereinafter, when explaining the directions of each component of the hand dryer 1, the depth direction of the hand dryer 1 shown in FIG. 1 is the X-axis direction, the height direction of the hand dryer 1 is the Y-axis direction, and the hand dryer 1 is The width direction of 1 is the Z-axis direction. Further, the + direction in the X-axis direction is the front, and the - direction in the X-axis direction is the rear. The + direction in the X-axis direction is the direction from the - side to the + side of the X-axis, and the - direction in the X-axis direction is the direction from the + side to the - side of the X-axis. Further, the + direction in the Y-axis direction is defined as the upper direction, and the - direction in the Y-axis direction is defined as the lower direction. The + direction in the Y-axis direction is the direction from the - side to the + side of the Y-axis, and the - direction in the Y-axis direction is the direction from the + side to the - side of the Y-axis. The Y-axis direction may also be referred to as the up-down direction. Further, the + direction in the Z-axis direction is defined as the right direction, and the - direction in the Z-axis direction is defined as the left direction. The + direction in the Z-axis direction is the direction from the - side to the + side of the Z-axis, and the - direction in the Z-axis direction is the direction from the + side to the - side of the Z-axis.

The hand drying device 1 is a device that blows away moisture attached to a user's hands by jetting an air stream to dry wet hands after washing. As shown in FIG. 2, the hand drying device 1 includes a housing 2, an air flow generating section 3, a nozzle 4, an air cleaning section 5, and a maintenance panel 6.

The housing 2 is a box-shaped member that forms the outer shell of the hand dryer 1. The housing 2 houses an air flow generating section 3, a nozzle 4, an air purifying section 5, and the like. As shown in FIG. 1, the housing 2 has a bottom surface 2a, a top surface 2b, a front surface 2c, a back surface 2d, and left and right side surfaces 2e and 2f. The bottom surface 2a is a horizontal surface. The upper surface 2b is a surface disposed above the bottom surface 2a and apart from the bottom surface 2a. The front surface 2c is a surface that a user faces when drying wet hands after washing, and is a vertical surface that connects the front ends of the bottom surface 2a and the top surface 2b. The back surface 2d is a surface facing opposite to the front surface 2c, and is a vertical surface that connects the rear ends of the bottom surface 2a and the top surface 2b. The right side surface 2e is a vertical surface that connects the right end portions of the bottom surface 2a and the top surface 2b. The left side surface 2f is a vertical surface that connects the left end portions of the bottom surface 2a and the top surface 2b.

A hand drying chamber 7 into which a user's hand can be inserted and removed is formed in the upper part of the housing 2. In this embodiment, the hand drying chamber 7 is open to the top surface 2b and the left and right side surfaces 2e and 2f. The user can insert and remove his/her hand into/from the hand drying chamber 7 from above or from the left and right sides of the hand drying chamber 7 . Hereinafter, the opening in the hand drying chamber 7 that opens on the top surface 2b is referred to as the top surface opening 7a, and the opening that opens on the left and right sides 2e, 2f of the hand drying chamber 7 as the side surface opening 7b. The side view shape of the hand drying chamber 7 shown in FIG. 2 is not particularly limited, but in this embodiment, it is a U-shape with an upward opening and a bottom. The hand drying chamber 7 is slightly inclined so as to be located at the rear as it goes from the top to the bottom. Note that the hand drying chamber 7 only needs to be open on at least one side of the housing 2.

The inner wall of the hand drying chamber 7 includes a bottom wall 7c, a front side wall 7d, and a back side wall 7e. The bottom wall 7c extends generally in the X-axis direction. The front side wall 7d stands up from the front end of the bottom wall 7c. The back side wall 7e stands up from the rear end of the bottom wall 7c. The surfaces of the front side wall 7d and the rear side wall 7e facing the hand drying chamber 7 are coated with a water-repellent coating such as silicone-based or fluorine-based, or a hydrophilic coating such as titanium oxide. The bottom wall 7c, the front side wall 7d, and the back side wall 7e are made of resin impregnated with an antibacterial agent. Therefore, the adhesion of dirt to the surface of the inner wall of the hand drying chamber 7 can be reduced, and the proliferation of bacteria attached to the surface of the inner wall of the hand drying chamber 7 can be reduced. Further, 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, it is possible to suppress the proliferation of the virus adhering to the surface of the inner wall of the hand drying chamber 7 and to inactivate the virus. A drain port (not shown) for draining water from the hand drying chamber 7 is formed in the bottom wall 7c of the hand drying chamber 7. The drain port communicates with the upper end of a drain channel (not shown) that extends in the vertical direction. The lower end of the drainage channel is connected to a drain tank 16. The drain tank 16 is a member that stores water drained through a drainage channel, and is detachably attached to the bottom of the housing 2.

A first hand detection section 8 and a second hand detection section 9 that detect a hand inserted into the hand drying chamber 7 are installed on the inner wall of the hand drying chamber 7 . The first hand detection section 8 is installed in the upper part of the hand drying chamber 7. The first hand detection unit 8 is installed near the top opening 7a of the hand drying chamber 7. The first hand detection section 8 is installed below the nozzle 4. The second hand detection section 9 is installed below the first hand detection section 8 and in the lower part of the hand drying chamber 7. The configurations of the first hand detection section 8 and the second hand detection section 9 are not particularly limited as long as they can detect a hand inserted into the hand drying chamber 7, but in this embodiment, they are photoelectric sensors.

The first hand detection section 8 includes a first light emitting section 8a, a first light receiving section 8c, and a first reflective surface 8b, which are arranged apart from each other in the X-axis direction. The first light emitting section 8a and the first light receiving section 8c are installed on the back side wall 7e. The first reflective surface 8b is installed on the front side wall 7d. The first hand detection section 8 detects the amount of light projected from the first light emitting section 8a by the first light receiving section 8c based on the amount of light received by the first light receiving section 8c. Detects the presence or absence of a hand. The second hand detection section 9 includes a second light emitting section 9a and a second light receiving section 9b that are arranged apart from each other in the X-axis direction. The second light emitting section 9a is installed on the front side wall 7d. The second light receiving section 9b is installed on the back side wall 7e. The second hand detection section 9 detects the presence or absence of a hand in the hand drying chamber 7 based on the amount of light projected from the second light emitting section 9a and received by the second light receiving section 9b. The first hand detection section 8 and the second hand detection section 9 are electrically connected to a control section 21, which will be described later, by wire or wirelessly. The detection results of the first hand detection section 8 and the second hand detection section 9 are sent to the control section 21 .

Inside the housing 2, there are formed a first air path 10 through which air flows, and a second air path 11, which is an air path independent of the first air path 10 and through which air flows. The casing 2 also includes a first intake port 12 for sucking air outside the casing 2 into the first air passage 10, and a first intake port 12 for sucking air outside the casing 2 into the second air passage 11. A second air intake port 13 is formed for drawing air into the air. Furthermore, an exhaust port 14 is formed in the casing 2 for discharging the air in the second air passage 11 that has been purified by the air purifier 5 to the outside of the casing 2. Note that the solid arrow A shown in FIG. 2 represents the flow of air in the first air path 10. A broken line arrow B shown in FIG. 2 represents the flow of air in the second air passage 11. In FIG. 2, the second intake port 13 is illustrated with a dashed line for ease of understanding.

The first intake port 12 is formed on the bottom surface 2a of the housing 2. The first air intake port 12 is provided at a position closer to the back surface 2d than the center of the bottom surface 2a in the X-axis direction. The shape of the first intake port 12 is not particularly limited. An intake filter 15 is installed in the first intake port 12 . The intake filter 15 serves to collect impurities such as dust, dirt, and floating bacteria contained in the air sucked through the first intake port 12 . Since the hand drying device 1 is equipped with the intake filter 15, impurities contained in the air around the hand drying device 1 are suppressed from being sucked into the first air path 10, and the user is provided with a sanitary air flow. You can dry your hands. For the intake filter 15, it is preferable to use a high-performance filter with high air purifying ability, such as a HEPA (High Efficiency Particulate Air) filter.

The first air passage 10 is an air passage that communicates the first air 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 air intake air path 10a is an air path that extends from the first air intake port 12 to the air flow generating section 3, and is an air path that connects the air outside the housing 2 from the first air intake port 12 to the inside of the housing 2. This is an air path that takes in the air and supplies it to the air flow generating section 3. The first exhaust air path 10b is an air path that extends from the exhaust side of the air flow generation section 3 to the nozzle 4, and is an air path that exhausts the air flow generated by the air flow generation section 3 toward the nozzle 4. be. The first exhaust air passage 10b is branched into a first front exhaust air passage 10c and a first rear exhaust air passage 10d on the exhaust side of the air flow generating section 3. 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 housing 2. The first back side exhaust air passage 10d extends in the vertical direction between the back surface 2d and the back side wall 7e inside the housing 2. A heater 17 that heats the air flow is installed at a branching portion between the first front side exhaust air path 10c and the first back side exhaust air path 10d.

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

As shown in FIG. 4, the housing 2 is provided with a shielding portion 2g extending from the edge of the second intake port 13 toward the inside of the housing 2. As shown in FIG. The shielding part 2g is arranged in front of the second intake port 13 with a gap between the second intake port 13 and the second intake port 13. The shielding portion 2g is inclined so as to move away from the second intake port 13 from the rear toward the front. When a user inserts a wet hand into the hand drying chamber 7, moisture adhering to the hand may fall off. In such a case, the shielding part 2g plays a role of suppressing the fallen moisture from entering the air purifying part 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 top opening 7a and side opening 7b to the second intake port 13 along the surface of the housing 2 is the shortest distance along the surface of the housing 2 from the edge of the top opening 7a and side opening 7b. It is shorter than the shortest distance from the edge to the first intake port 12. As shown in FIG. 3, the second air intake port 13 is formed on the same surface of the housing 2 as the side surface opening 7b opens, that is, on the left and right side surfaces 2e and 2f. Note that the second air 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 top surface 2b of the housing 2. That is, the second air intake port 13 may be formed on one of the left and right side surfaces 2e, 2f, the front surface 2c, and the top 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 2a of the housing 2. The exhaust port 14 is provided at a position closer to the front surface 2c than the center of the bottom surface 2a in the X-axis direction. 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 housing 2. Note that 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 top 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, 2f, the front surface 2c, and the top 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 air 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 (described later) in the air purifier 5. This is the air path leading to 5a. The second intake air passage 11a is an air passage that takes air from outside the housing 2 into the interior of the housing 2 through the second intake port 13 and supplies it to the air purifier 5. As shown in FIG. 2, the second exhaust air path 11b is an air path that extends from the exhaust side of the blower 5a of the air purifier 5 to the exhaust port 14. The second exhaust air path 11b is an air path that exhausts the air purified by the air purifier 5 toward the outside of the casing 2 from the exhaust port 14.

The air flow generation unit 3 is a device installed in the first air path 10 and generates a highly pressurized air flow. The air flow generator 3 takes air into the first intake air path 10a from the first intake port 12, and sends a high-pressure air flow toward the nozzle 4 from the first exhaust air path 10b. . The air flow generating section 3 is disposed inside the housing 2 below the hand drying chamber 7. The airflow generator 3 includes a first blade 3a and a first motor 3b that rotates the first blade 3a. The air flow generator 3 is arranged so that its rotation axis coincides with the horizontal axis. The airflow generating section 3 is arranged with the first blade 3a facing the back surface 2d and the first motor 3b facing the front surface 2c. The first motor 3b is, for example, a DC brushless motor or a commutator motor.

The nozzle 4 is a member that connects the first air path 10 and the hand drying chamber 7 with each other and injects the air flow generated by the air flow generating section 3 toward the hand drying chamber 7. The nozzle 4 is installed inside the housing 2. The nozzles 4 include a plurality of front side first nozzles 4a installed on the front side wall 7d, a plurality of rear side first nozzles 4b installed on the back side wall 7e, and a plurality of back side first nozzles 4b installed on the back side wall 7e. and a second side nozzle 4c. By installing the nozzles 4 on the front side wall 7d and the back side wall 7e, the airflow can be applied to the palm and the back of the user's hand at the same time to blow away the moisture attached to the hand and dry the hand.

The front side first nozzle 4a is installed near the upper surface opening 7a of the front side wall 7d. The first front nozzle 4a connects the first front exhaust air passage 10c and the hand drying chamber 7 with each other. Although not shown, the plurality of front-side first nozzles 4a are arranged in a line in the Z-axis direction. Each of the plurality of front side first nozzles 4a is a small hole penetrating the front side wall 7d. Although the opening shape of the front-side first nozzle 4a is not particularly limited, it is a rectangular slit shape in this embodiment. The first front nozzle 4a is provided so as to be inclined downward from the horizontal plane toward the hand drying chamber 7 from the first front exhaust air passage 10c. The first nozzle 4a on the front side injects an air stream diagonally downward toward the hand drying chamber 7. Generally, the amount of moisture that adheres to a user's hands is greater on the palm than on the back of the hand. Therefore, the flow velocity of the airflow injected from the front-side first nozzle 4a may be faster than the flow velocity of the airflow injected from each of the back-side first nozzle 4b and the back-side second nozzle 4c. preferable.

The first nozzle 4b on the back side is installed near the top opening 7a of the back side wall 7e. The first back nozzle 4b connects the first back exhaust air passage 10d and the hand drying chamber 7 with each other. As shown in FIG. 1, the plurality of back side first nozzles 4b are arranged in a line in the Z-axis direction. Each of the plurality of back side first nozzles 4b is a small hole penetrating the back side wall 7e. The opening shape of the first nozzle 4b on the back side is not particularly limited, but in this embodiment, it is a rectangular slit shape. As shown in FIG. 2, the first back nozzle 4b is provided so as to be inclined downward from the horizontal plane toward the hand drying chamber 7 from the first back exhaust air passage 10d. The first nozzle 4b on the back side injects an air stream diagonally downward toward the hand drying chamber 7.

The second back nozzle 4c is installed above the first back nozzle 4b on the back side wall 7e. The second back nozzle 4c connects the first back exhaust air passage 10d and the hand drying chamber 7 with each other. As shown in FIG. 1, the plurality of second nozzles 4c on the back side are arranged in a line in the Z-axis direction. Each of the plurality of second rear nozzles 4c is a small hole penetrating the rear side wall 7e. Although the opening shape of the second nozzle 4c on the back side is not particularly limited, it 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. The volume of the airflow injected from the second nozzle 4c on the back side is set smaller than the volume of the airflow jetted from the first nozzle 4b on the back side.

As shown in FIG. 2, the second back nozzle 4c is provided so as to be inclined downward from the horizontal plane toward the hand drying chamber 7 from the first back exhaust air passage 10d. The second nozzle 4c on the back side injects an air stream diagonally downward toward the hand drying chamber 7. It is preferable that the ejection axis of the first nozzle 4b on the back side is inclined downward in a range of more than 0° and less than 30° than the angle of the ejection axis of the second nozzle 4c on the back side. It is preferable that the first nozzle 4b on the back side and the second nozzle 4c on the back side are separated from each other by at least 10 mm in the vertical direction. In this way, it is possible to prevent the airflow ejected from the first nozzle 4b on the back side and the airflow ejected from the second nozzle 4c on the back side from interfering with each other until they hit the user's hand.

Note that the opening shapes of the front-side first nozzle 4a, the back-side first nozzle 4b, and the back-side second nozzle 4c are not limited to the illustrated example, and may be circular, for example. Moreover, the number of rows of the front-side first nozzle 4a, the back-side first nozzle 4b, and the back-side second nozzle 4c may be a plurality of rows spaced apart in the Y-axis direction.

The air purifier 5 is a device that is installed in the second air path 11 and purifies the air. The air purifier 5 takes in and cleans the air around the hand drying device 1 from the second intake port 13 into the second intake air path 11a, and purifies the air from the exhaust port 14 toward the outside of the casing 2. Exhaust the evaporated air. The air cleaning section 5 is disposed inside the housing 2 below the hand drying chamber 7 and the air flow generating section 3. The air cleaning section 5 includes a blower 5a and a discharge device 5e.

The blower 5a takes in air from the second intake port 13 into the second intake air path 11a, and blows an air flow toward the exhaust port 14 from the second exhaust air path 11b. The type of blower 5a is not particularly limited, but is, for example, a sirocco fan. The blower 5a includes a casing 5b, a second blade 5c arranged inside the casing 5b, and a second motor 5d that rotates the second blade 5c. The blower 5a is arranged so that its rotation axis coincides with the horizontal axis. The blower 5a is arranged with the second blade 5c facing the front 2c and the second motor 5d facing the back 2d. The casing 5b is attached inside the housing 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 device 5e is disposed on the exhaust side of the blower 5a in the second air passage 11, and plays the role of cleaning the air taken in from the second intake port 13. The discharge device 5e is composed of a discharge electrode and a counter electrode. A tungsten ribbon electrode is used as the discharge electrode. A stainless steel plate is used for the counter electrode. A DC voltage of 3 kV to 7 kV is applied to the discharge electrode. The counter electrode is grounded. By applying a voltage to the discharge device 5e, a strong discharge and electric field space are generated between the discharge electrode and the counter electrode, and viruses, bacteria, mold, and allergens passing through the discharge and electric field space are removed or inactivated. can. By taking the air around the hand drying device 1 into the second air path 11 and repeating the removal or inactivation of viruses etc. by the discharge device 5e, the air around the hand drying device 1 is purified and circulated. Therefore, the air around the hand drying device 1 can be kept clean and clean. Note that the air cleaning unit 5 may include an ion generator that generates ions by a discharge phenomenon. That is, it is preferable that the air cleaning unit 5 has at least one of the discharge device 5e and the ion generator.

The discharge device 5e is disposed below the blower 5a and shifted in front of the blower 5a. Therefore, the airflow passing through the discharge device 5e flows from the rear surface 2d side of the housing 2 toward the front surface 2c side. A maintenance panel 6 is arranged in front of the discharge device 5e. A portion of the second exhaust air passage 11b that is closer to the exhaust side than the discharge device 5e extends in the vertical direction and communicates with the exhaust port 14. Therefore, the airflow that has passed through the discharge device 5e hits the maintenance panel 6 at right angles, flows downward toward the exhaust port 14, and is discharged from the exhaust port 14 to the outside of the casing 2. In hand washing areas such as toilets, hand washing stations, factories, etc. where the hand drying device 1 is installed, water may be sprinkled on the floor when cleaning the floor. As in this embodiment, the portion of the second exhaust air passage 11b that communicates with the exhaust port 14 extends in the vertical direction, and the airflow flows from top to bottom toward the exhaust port 14, thereby causing the air to flow onto the floor. Sprinkled water can be prevented from entering the air cleaning section 5 through the exhaust port 14. Note that as another means for suppressing water intrusion into the air purifying section 5, a labyrinth structure may be provided by providing a rib like a thin plate inside the second exhaust air passage 11b, or a labyrinth structure may be provided by providing a rib like a thin plate inside the second exhaust air path 11b. A member having a minute opening may be installed at the exhaust port 14.

The maintenance panel 6 is a member that is removably attached to the casing 2 and covers the air purifier 5 while attached to the casing 2. A fixed panel 18 forming the front surface 2c of the housing 2 is provided above the maintenance panel 6. The maintenance panel 6 is removably attached to the fixed panel 18 and the bottom surface 2a. The maintenance panel 6 and the casing 5b are separated from each other in the X-axis direction. The space between the maintenance panel 6 and the casing 5b becomes a second air path 11.

The upper end of the maintenance panel 6 is provided with a plurality of panel protrusions (not shown) that protrude upward. Furthermore, the fixed panel 18 is provided with a recess (not shown) into which a panel protrusion fits. The maintenance panel 6 is attached to the fixed panel 18 by fitting the panel protrusion into the recess. A fitting portion (not shown) for fitting into the bottom surface 2a of the housing 2 is provided at the lower end of the maintenance panel 6. Although not shown, a rotation prevention rib is provided at the upper end of the maintenance panel 6 to prevent rotation of the maintenance panel 6 starting from the panel protrusion, and a rotation prevention rib is provided at the lower end of the fixed panel 18. A holding portion is provided in which the prevention 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 sides of the lower part of the maintenance panel 6 with both hands and pulling it toward the front 2c side of the casing 2. Subsequently, by sliding the maintenance panel 6 downward, the anti-rotation rib is removed from the holding portion. Next, the maintenance panel 6 can be removed by rotating the lower end of the maintenance panel 6 upward using the panel protrusion at the upper end of the maintenance panel 6 as a starting point. The length of the anti-rotation rib is the same as the length of the stroke of the panel projection pressing against the contact portion of the panel detection section 19, which will be described later. In other words, the length of the anti-rotation rib and the length of the stroke in which the panel protrusion presses the contact part of the panel detection part 19 are such that the panel protrusion presses the contact part of the panel detection part 19 when the anti-rotation rib is removed from the holding part. It is set so that it is not pressed.

FIG. 5 is a front view of the hand drying device 1 according to the first embodiment, with the maintenance panel 6 removed. An operating section 20 is installed in the casing 5b. The operation unit 20 includes a switch for turning on and off the power of the airflow generation unit 3, a switch for changing the air volume of the airflow generation unit 3, a switch for turning on and off of the power for the heater 17 that warms the airflow, and a power supply for the air purification unit 5. A switch for turning on and off the air, a switch for changing the air volume of the blower 5a of the air purifier 5, a lamp for displaying each setting state, and the like are provided. While the maintenance panel 6 is attached to the housing 2, the operation unit 20 cannot be accessed and the operation unit 20 cannot be viewed from outside the housing 2. With this structure, since the location of the operating section 20 is not known, mischief such as changing the settings of the hand drying device 1 by operating the operating section 20 can be prevented. Note that the power lamp of the air flow generating section 3 and the power lamp of the air purifying section 5 can be visually recognized from the outside of the casing 2 through a transparent section (not shown) provided on the maintenance panel 6. The transparent portion is, for example, a partially transparent portion of the maintenance panel 6 or a hole penetrating the maintenance panel 6.

The panel detection unit 19 detects whether the maintenance panel 6 is attached to the housing 2 or not. The panel detection unit 19 is arranged on the back side of the portion of the fixed panel 18 that overlaps with the maintenance panel 6. The panel detection unit 19 is arranged inside the casing 2 so as not to be visible when the maintenance panel 6 is removed from the casing 2. The panel detection section 19 uses a mechanical switch. The mechanical switch is, for example, a limit switch. When using such a mechanical switch, a part of the maintenance panel 6 attached to the casing 2 presses against the contact part of the panel detection section 19, so that the maintenance panel 6 is not attached to the casing 2. It can be detected that Moreover, an optical switch may be used for the panel detection section 19. The optical switch is, for example, an infrared sensor. When such an optical switch is used, the detection level of the optical switch changes when the maintenance panel 6 is attached to the housing 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 section 19 is electrically connected to a control section 21, which will be described later. The detection results of the panel detection section 19 are sent to the control section 21 .

FIG. 6 is a functional block diagram of the hand drying device 1 according to the first embodiment. The control unit 21 controls the operation and stop of the air flow generation unit 3 and also controls the operation and stop of the air cleaning unit 5. The control unit 21 operates the air flow generation unit 3 and the air purification unit 5 when the first hand detection unit 8 and the second hand detection unit 9 detect the user's hand. The control unit 21 operates the air purifying unit 5 after the air flow generating unit 3 is stopped. The control unit 21 operates the air purifying unit 5 at the maximum air volume until a preset time has elapsed after the air flow generating unit 3 stops, and after the set time has elapsed, the air purifying unit 5 operates at the maximum air volume. Operate at a smaller air volume. The control unit 21 stops the air purifying unit 5 while the air flow generating unit 3 is in operation. When the panel detection unit 19 detects removal of the maintenance panel 6 while the airflow generation unit 3 and the air purification unit 5 are energized, the control unit 21 controls the power supply to the airflow generation unit 3 and the air purification unit 5. Stop.

Next, the hardware configuration of the control unit 21 according to the first embodiment will be explained. The control unit 21 is realized by a processing circuit. The processing circuit may be a control circuit including a processor, or may be 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 that implements the control unit 21 includes a processor 21a and a memory 21b, as shown in FIG. The processor 21a and the memory 21b can exchange data with each other via a bus, for example. The processor 21a executes the functions of the control unit 21 by reading and executing a 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). include. Further, the program stored in the memory 21b is provided, for example, by a recording medium. The recording medium includes one or more of nonvolatile or volatile semiconductor memory, magnetic disk, flexible memory, optical disk, compact disk, and DVD (Digital Versatile Disc). Further, 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 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 of the hand drying device 1 when drying the user's hands will be described.

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

Subsequently, when the user's hand inserted into the hand drying chamber 7 is detected by both the first hand detection unit 8 and the second hand detection unit 9, the control unit 21 controls the air flow generation unit 3. to drive. When the air flow generator 3 is operated, air outside the housing 2 is sucked into the first intake air path 10a from the first intake port 12 through the intake filter 15, and An air flow is generated from the nozzle 4 toward the nozzle 4. The airflow generated by the airflow generation section 3 flows through a path from the exhaust side of the airflow generation section 3 to the first front exhaust air passage 10c, and from the exhaust side of the airflow generation section 3 to the first back side. It is divided into a path that flows into the exhaust air path 10d.

The airflow flowing into the first front exhaust air passage 10c is injected toward the hand drying chamber 7 from the first front nozzle 4a. The airflow flowing into the first back side exhaust air passage 10d is injected toward the hand drying chamber 7 from each of the first back nozzle 4b and the second back nozzle 4c. The ejected airflow hits the user's hands, blowing away moisture on the user's hands and drying the wet hands after washing. The blown moisture is scattered into the hand drying chamber 7, and is stored in the drain tank 16 through a drain channel from a drain port (not shown) formed in the bottom wall 7c. When the user's hand is removed from the hand drying chamber 7, the first hand detection section 8 and the second hand detection section 9 cannot detect the user's hand. The control unit 21 stops the airflow generation unit 3 when the user's hand is no longer detected in at least one of the first hand detection unit 8 and the second hand detection unit 9.

In this embodiment, the ejection axis of the first nozzle 4b on the back side is inclined downward in a range of more than 0° and less than 30° than the angle of the ejection axis of the second nozzle 4c on the back side. Further, the first nozzle 4b on the back side and the second nozzle 4c on the back side are separated from each other by at least 10 mm in the vertical direction. In this way, the airflow ejected from the first nozzle 4b on the back side and the airflow ejected from the second nozzle 4c on the back side do not merge until they hit the back of the user's hand. The airflow jetted from the first nozzle 4b on the back side hits the back of the user's hand and flows upward along the hand, and the airflow jetted from the second nozzle 4c on the backside hits the back of the user's hand. After hitting the back of the hand, the airflow flows downward along the hand, and both airflows merge at the back of the hand and flow toward the back side wall 7e while turning. Thereby, the upward airflow generated after the airflow injected from the back side first nozzle 4b hits the back of the user's hand can be suppressed from being discharged upward from the hand drying chamber 7. Furthermore, the moisture blown off from the back of the hand also travels toward the back side wall 7e on the swirling air current, so that it is possible to suppress the moisture from being blown away from the hand drying chamber 7 toward the user. Although not shown, a front-side second nozzle that communicates the first front-side exhaust air passage 10c and the hand drying chamber 7 with each other is placed above the front-side first nozzle 4a. It may be arranged away from the nozzle 4a. In this way, the same effect as that obtained by using the first back nozzle 4b and the second back nozzle 4c can be achieved. That is, even on the palm side, it is possible to suppress the upward airflow from being discharged upward from the hand drying chamber 7, and it is also possible to suppress the scattering of moisture from the hand drying chamber 7 toward the user.

Next, with reference to FIG. 8, an example of the operation of the hand drying device 1 during air purification will be described. FIG. 8 is a flowchart illustrating the operation of the hand drying device 1 according to the first embodiment during air purification.

When the hand drying device 1 is powered on, the hand drying device 1 enters a standby state in step S1. In the standby state of the hand drying device 1, the air flow generation section 3 and the air purification section 5 are stopped, but the air flow generation section 3 and the air purification section 5 are energized.

Then, the process advances to step S2. In step S2, the control unit 21 controls 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, respectively. Determine whether the user's hand is detected in both. If No in step S2, that is, if it is determined that the user's hand is not detected by at least one of the first hand detection unit 8 and the second hand detection unit 9, the determination in step S2 is repeated. It will be done.

On the other hand, if Yes in step S2, that is, if it is determined that the user's hand has been detected by both the first hand detection section 8 and the second hand detection section 9, the process proceeds to step S3. In step S3, the control section 21 operates the airflow generation section 3.

Subsequently, the process advances to step S4. In step S4, the control unit 21 controls 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, respectively. Determine whether the user's hand is detected in both. If Yes in step S4, that is, if it is determined that the user's hand is detected by both the first hand detection unit 8 and the second hand detection unit 9, the determination in step S4 is repeated. .

On the other hand, if No in step S4, that is, if it is determined that the user's hand is not detected by at least one of the first hand detection unit 8 and the second hand detection unit 9, the process proceeds to step S5. . In step S5, the control section 21 stops the airflow generation section 3.

Subsequently, the process advances to step S6. In step S6, the control unit 21 causes the air purifier 5 to operate at the maximum air volume. Hereinafter, the mode in which the air purifier 5 operates at the maximum air volume will be referred to as a "strong operation mode."

Subsequently, the process advances to step S7. In step S7, the control unit 21 determines whether a set time has elapsed since the air purifier 5 started operating. If No in step S7, that is, if it is determined that the set time has not elapsed since the start of operation of the air purifier 5, the determination in step S7 is repeated.

On the other hand, if Yes in step S7, that is, if it is determined that the set time has elapsed since the start of operation of the air purifier 5, the process proceeds to step S8. In step S8, the control unit 21 causes the air purifier 5 to operate at an air volume smaller than the maximum air volume. Hereinafter, a mode in which the air purifier 5 operates with an air volume smaller than the maximum air volume will be referred to as a "weak operation mode."

Subsequently, the process advances to step S9. In step S9, the control unit 21 stops the air cleaning unit 5 after a certain period of time has passed since the air cleaning unit 5 started operating. The fixed time is longer than the set time.

Subsequently, the process advances to step S10. In step S10, the hand drying device 1 enters a standby state. The operations from step S1 to step S10 described above are repeated until the hand drying device 1 is powered off.

Note that the air cleaning operation of the hand drying device 1 is not limited to the above operation example. For example, when the switch for turning on and off the power of the air purifying unit 5 provided on the operation unit 20 is set to "on" and the hand drying device 1 is energized, the air purifying unit 5 is set to operate at all times. You can also do this. In this way, the air around the hand drying device 1 can be purified regardless of whether the airflow generating section 3 is in operation or not.

Further, the control unit 21 may control operation and stop of the air purifying unit 5 based on the day of the week and the time. In this case, the hand drying device 1 may include a timer for determining the day of the week and the time, and the control unit 21 may obtain the day of the week and the time from the timer. In offices, factories, and the like where the hand dryer 1 is generally installed, the hand dryer 1 is used less often at night and on holidays. Therefore, at night and on holidays, the control unit 21 may automatically control the air purifying unit 5 not to operate, or may automatically control the air purifying unit 5 to switch to the weak operation mode. . In this way, the power consumption of the hand drying device 1 can be suppressed. In addition, in situations where there are few users, there is no need to operate the air purifier 5 in the strong operation mode, and even if the air purifier 5 is operated in the weak operation mode, the air around the hand dryer 1 can be sufficiently purified. can.

Further, the control unit 21 includes a storage unit (not shown), and the storage unit contains data regarding the number of times the air flow generator 3 is operated and the time period of operation, and data regarding the number of times the air purifying unit 5 is operated, the time period of operation, and the operation mode. may be stored. The control unit 21 can switch the operation mode of the air purifier 5 based on the data stored in the storage unit. For example, the control unit 21 calculates a time period in which the hand drying device 1 is used frequently from the data stored in the storage unit, and sets the air purifying unit 5 to the strong operation mode in advance before the time period in which the hand drying device 1 is used frequently. Can be switched. Thereby, the air around the hand drying device 1 can be purified before the hand drying device 1 is used more frequently.

Further, the control unit 21 may store the number of times of operation per a certain time, and switch the operation mode of the air purifying unit 5 depending on whether the number of times of operation per a certain time exceeds a set number of times. While the hand drying device 1 is used less frequently, the number of times it is operated per certain period of time is small, and the need to clean the air around the hand drying device 1 is low. On the other hand, as the number of times the hand dryer 1 is used increases, the number of times it is operated per certain period of time increases, and it is necessary to clean the air around the hand dryer 1. Therefore, the control unit 21 switches the air purifying unit 5 to the strong operation mode when the number of times of operation per fixed time exceeds the set number of times, and switches the air purifying unit 5 to the strong operation mode when the number of times of operation per fixed time does not exceed the set number of times. , the air purifier 5 may be switched to a weak operation mode.

Next, with reference to FIG. 9, the operation when the maintenance panel 6 of the hand dryer 1 is removed will be described. FIG. 9 is a flowchart illustrating the operation when the maintenance panel 6 of the hand drying device 1 according to the first embodiment is removed.

When the hand drying device 1 is powered on, the hand drying device 1 enters a standby state in step S11. In the standby state of the hand drying device 1, the air flow generation section 3 and the air purification section 5 are stopped, but the air flow generation section 3 and the air purification section 5 are energized.

Subsequently, the process advances to step S12. In step S12, the control unit 21 determines whether the maintenance panel 6 has been detected based on the detection signal from the panel detection unit 19. If Yes in step S12, that is, if it is determined that the maintenance panel 6 has been detected, the determination in step S12 is repeated.

On the other hand, if No in step S12, that is, if it is determined that the maintenance panel 6 is not detected, the process advances to step S13. In step S13, the control unit 21 stops energizing the air flow generating unit 3 and the air purifying unit 5. At this time, the control unit 21 instantly stops energizing the discharge device 5e of the air purifying unit 5. The operations from step S11 to step S13 described above are repeated until the hand drying device 1 is powered off.

Next, the effects of the hand drying device 1 according to this embodiment will be explained.

The air flow jetted from the nozzle 4 shown in FIG. 2 hits the user's hand and the surface of the inner wall of the hand drying chamber 7, and then is discharged around the housing 2 from the top opening 7a and the side opening 7b. be done. In this embodiment, by providing the second back nozzle 4c, the amount of air discharged from the upper surface opening 7a is smaller than in the case where the second back nozzle 4c is not provided. Since the air discharged from the top opening 7a and the side opening 7b comes into contact with the user's hands and the surface of the inner wall of the hand drying chamber 7, it may become unsanitary depending on the user's degree of cleaning. be. Furthermore, although the hand drying room 7 is cleaned regularly, it may become unsanitary depending on the frequency and method of cleaning.

In the present embodiment, the hand drying device 1 includes a hand drying chamber 7 that is open on at least one side and into which a hand can be inserted, a first air path 10 through which air flows, and the first air path 10 is independent of the hand drying chamber 7. A box-shaped casing 2 is provided with a second air path 11 through which air flows. The hand drying device 1 also includes an air flow generating section 3 installed in the first air path 10 to generate air flow, and an air purifying section installed in the second air path 11 to purify the air. 5. The casing 2 includes a first intake port 12 for sucking air outside the casing 2 into the first air path 10, and a first air intake port 12 for sucking air outside the casing 2 into the second air path 11. and an exhaust port 14 for discharging the air in the second air passage 11 purified by the air purifier 5 to the outside of the housing 2. The first intake port 12 and the second intake port 13 are formed independently of each other. With these configurations, the air discharged from the hand drying chamber 7 is guided from the second air intake port 13 through the second air path 11 to the air cleaning section 5, and is purified by the air cleaning section 5. Thereafter, it is discharged to the outside of the casing 2 from the exhaust port 14. Therefore, the air around the hand drying device 1 can be purified. In other words, the air discharged from the hand drying chamber 7 can be efficiently cleaned by the air purifier 5 before the air discharged from the hand drying chamber 7 spreads.

The air discharged from the top opening 7a shown in FIG. 3 is likely to be discharged outdoors from the ventilation fan provided on the ceiling of the installation space of the hand dryer 1, but the air discharged from the side opening 7b is It is difficult to get into the ventilation fan and tends to remain around the hand dryer 1. In this regard, in the present embodiment, the second air intake port 13 is formed on the same surface of the housing 2 as the side opening 7b of the hand drying chamber 7 opens, that is, on the side surfaces 2e and 2f of the housing 2. As a result, 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 7b can be efficiently purified by the air purifier 5. Further, as shown in FIG. 2, in the present embodiment, the first intake port 12 and the second intake port 13 are formed independently of each other, and a side opening is formed along the surface of the housing 2. The shortest distance from the edge of the side opening 7b to the second intake port 13 is shorter than the shortest distance from the edge of the side opening 7b to the first intake port 12 along the surface of the casing 2. The air discharged from 7b is more easily drawn into the second air intake port 13 than the first air intake port 12. Therefore, the air discharged from the side opening 7b can be efficiently purified by the air purifier 5.

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

In this embodiment, as shown in FIG. 2, the second intake port 13 and the exhaust port 14 are formed on different surfaces of the casing 2, so that the air can be cleaned by the air purifier 5. After air is exhausted from the exhaust port 14, it becomes difficult to be sucked into the second intake port 13.

There is also a method of purifying the air by arranging a discharge device 5e in the first air path 10 shown in FIG. It's very big. Therefore, if the air flow generator 3 is used to purify the air, the amount of electricity used will increase significantly. In this regard, in the present embodiment, a second air path 11 independent from the first air path 10 in which the air flow generating section 3 is disposed is provided, and an air purifying section including the blower 5a and the discharge device 5e is provided. 5 is arranged within the second air passage 11. As a result, a motor with lower power consumption than the first motor 3b of the air flow generating section 3 can be used as the second motor 5d of the air purifying section 5, so that it is possible to reduce the amount of electricity used. can.

In this embodiment, as shown in FIG. and a control section 21 for operating the air purifying section 5. Further, as shown in FIG. 2, the hand drying device 1 includes a maintenance panel 6 that is removably attached to the housing 2 and covers the air purifying section 5 while being attached to the housing 2, and a maintenance panel 6 that is attached to the housing 2. It includes a panel detection section 19 that detects whether or not it is attached to the body 2. The control unit 21 stops the power supply to the discharge device 5e of the air purification unit 5 when the panel detection unit 19 detects removal of the maintenance panel 6 while the air flow generation unit 3 and the air purification unit 5 are energized. . With these configurations, it is possible to prevent a worker who removes the maintenance panel 6 and performs maintenance work on the air flow generating section 3, the air purifying section 5, etc. from coming into contact with the energized discharge device 5e.

In the present embodiment, the control unit 21 stops the air flow generation unit 3 when the panel detection unit 19 detects that the maintenance panel 6 is removed while the air flow generation unit 3 and the air purification unit 5 are energized. . This can prevent air from being ejected from the nozzle 4 during maintenance work.

In the present embodiment, the control section 21 stops the air purifying section 5 while the air flow generating section 3 is in operation, and operates the air purifying section 5 after the air flow generating section 3 is stopped. Further, the control unit 21 operates the air purifying unit 5 at the maximum air volume until a preset time has elapsed after the air flow generating unit 3 stops, and after the set time has elapsed, the air purifying unit 5 is operated. Operate at an air volume smaller than the maximum air volume. With these configurations, 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 purifier 5 decreases after a preset time has elapsed after the air flow generator 3 stops, energy savings are achieved compared to when the air purifier 5 continues to operate at the maximum air volume. can contribute to Furthermore, since the number of rotations of the second motor 5d of the air purifier 5 is reduced, the noise generated from the air purifier 5 can be suppressed and the quietness of the air purifier 5 can be improved.

In addition, in this embodiment, as shown in FIG. The air purifying section 5 disposed in the air purifying section 5 has a blower 5a independent from the air flow generating section 3. Thereby, it is also possible to clean the air with the air purifier 5 while operating the air flow generator 3 to dry hands.

Embodiment 2.
Next, with reference to FIG. 10, a hand drying device 1A according to a second embodiment will be described. FIG. 10 is a side view of the hand drying device 1A according to the second embodiment. In this embodiment, the position of the second intake port 13 is different from that in the first embodiment described above. In addition, in the second embodiment, the same reference numerals are given to the same parts as those in the first embodiment described above, and the description thereof will be omitted. For ease of understanding, FIG. 10 shows the second air passage 11, the second air intake port 13, the exhaust port 14, and the hand drying chamber 7. Illustrations of the air passage 10 and the like of No. 1 are omitted.

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

The second air intake air path 11a of the second air air path 11 extends backward from the second air intake port 13 toward the back surface 2d, and then extends downward along the back surface 2d. Extends forward toward the wind path. The second exhaust air path 11b of the second air path 11 extends in the vertical direction along the front surface 2c of the housing 2.

In this embodiment, the air discharged from the upper surface opening 7a is more easily sucked into the air purifying section 5 (not shown) through the second air intake port 13. Therefore, the air discharged from the upper surface opening 7a can be efficiently purified by the air purifier 5.

FIG. 11 is a side view of a hand drying device 1B according to a first modification of the second embodiment. The second air intake port 13 is formed on the upper surface 2b of the housing 2, closer to the front surface 2c of the housing 2 than the hand drying chamber 7 is. That is, the second air intake port 13 is formed between the user and the hand drying chamber 7. The second air intake port 13 is arranged near the upper surface opening 7a. The second air intake port 13 is arranged above the upper surface opening 7a and closer to the front surface 2c than the upper surface opening 7a. In this embodiment, the hand drying chamber 7 opens only to the top surface 2b of the housing 2, but may also open to the left and right side surfaces 2e and 2f of the housing 2. In this case, the second intake port 13 may be arranged near the side opening 7b.

The second air intake air path 11a of the second air air path 11 extends downward from the second air intake port 13 along the front surface 2c, and then extends toward the rear. It extends downward towards the road. The second exhaust air path 11b of the second air path 11 extends in the vertical direction along the front surface 2c of the housing 2.

In the present embodiment, the air directed toward the user out of the air discharged from the upper surface opening 7a is more easily sucked into the air purifier 5 (not shown) through the second air intake port 13. Therefore, the air discharged from the upper surface opening 7a can be efficiently purified by the air purifier 5.

FIG. 12 is a side view of a hand drying device 1C according to a second modification of the second embodiment. The configurations of the second intake port 13 and the second intake air path 11a are the same as in the second embodiment. The exhaust port 14 is formed on the upper surface 2b of the housing 2, 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 near the upper surface opening 7a. The exhaust port 14 is arranged above the upper surface opening 7a and closer to the front surface 2c than the upper surface opening 7a. In this embodiment, the hand drying chamber 7 opens only to the top surface 2b of the housing 2, but may also open to the left and right side surfaces 2e and 2f of the housing 2. In this case, the exhaust port 14 may be placed near the side opening 7b.

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

In this embodiment, the air purified by the air purifier 5 is discharged between the user and the hand drying chamber 7, so that the user can dry his hands with the purified air. Note that the exhaust port 14 may be open toward the hand drying chamber 7. This makes it easier for clean air discharged from the exhaust port 14 to flow into the hand drying chamber 7. Therefore, when the air purifier 5 is operated at the same time as drying the user's hands, clean air can be applied to the user's hands, and the user's hands can be hygienically dried. In addition, when the user's hands are not being dried, clean air is discharged from the exhaust port 14 toward the hand drying chamber 7, so that the surface of the inner wall of the hand drying chamber 7 can be kept clean.

The configurations shown in the embodiments above are merely examples, and can be combined with other known techniques, or can be combined with other embodiments, within the scope of the gist. It is also possible to omit or change part of the configuration.

1, 1A, 1B, 1C hand dryer, 2 housing, 2a bottom surface, 2b top surface, 2c front surface, 2d back surface, 2e, 2f side surface, 2g shielding section, 3 air flow generating section, 3a first blade, 3b first blade 1 motor, 4 nozzle, 4a first nozzle on the front side, 4b first nozzle on the back side, 4c second nozzle on the back side, 5 air purifier, 5a blower, 5b casing, 5c second blade, 5d second 2 motor, 5e discharge device, 6 maintenance panel, 7 hand drying chamber, 7a top opening, 7b side opening, 7c bottom wall, 7d front side wall, 7e back side wall, 8 first hand detection section, 8a first light emitting part, 8b first reflective surface, 8c first light receiving part, 9 second hand detection part, 9a second light emitting part, 9b second light receiving part, 10 first air path, 10a first intake air passage, 10b first exhaust air passage, 10c first front side exhaust air passage, 10d first rear side exhaust air passage, 11 second air passage, 11a second intake air passage, 11b 2 exhaust air passage, 12 first intake port, 13 second intake port, 14 exhaust port, 15 intake filter, 16 drain tank, 17 heater, 18 fixed panel, 19 panel detection section, 20 operation section, 21 control part, 21a processor, 21b memory.

Claims (14)

a hand drying chamber that is open on at least one side and into which a hand can be inserted; a first air path through which air flows; and a second air path that is independent of the first air path and through which air flows. a box-shaped housing formed with;
an air flow generating section installed in the first air path and generating an air flow;
a nozzle that connects the first air path and the hand-drying chamber with each other and injects the airflow generated by the airflow generation section toward the hand-drying chamber;
an air cleaning unit installed in the second air path to clean the air;
The casing includes a first intake port for sucking air outside the casing into the first air path, and a first air intake port for sucking air outside the casing into the second air path. a second intake port and an exhaust port for discharging the air in the second air path purified by the air cleaning unit to the outside of the casing;
The first intake port and the second intake port are formed independently of each other ,
The hand drying device , wherein the second air path is an air path that extends from the second air intake port to the exhaust port without passing through the hand drying chamber. The shortest distance from the edge of the opening of the hand-drying chamber to the second intake port along the surface of the casing is the shortest distance from the edge of the opening of the hand-drying chamber to the first inlet along the surface of the casing. The hand drying device according to claim 1, characterized in that the distance is shorter than the shortest distance to the air intake port. The hand drying device according to claim 1 or 2, wherein the second air intake port is formed on the same surface of the casing as the surface where the hand drying chamber opens. The hand drying device according to any one of claims 1 to 3, wherein the second air intake port is formed on at least one of a side surface, a front surface, and a top surface of the casing. The hand drying device according to any one of claims 1 to 4, wherein the second air intake port and the exhaust port are formed on different surfaces of the casing. The hand drying device according to any one of claims 1 to 5, wherein the first intake port and the exhaust port are formed on the same surface of the casing. 7. The hand drying device according to claim 1, wherein the exhaust port is formed on at least one of a side surface, a front surface, and a top surface of the housing. The hand drying device according to any one of claims 1 to 7, wherein the air cleaning section includes at least one of a discharge device and an ion generator. a hand detection unit that detects a hand inserted into the hand drying chamber;
9. The apparatus according to claim 1, further comprising a control section that operates the air flow generation section and the air purification section when a hand is detected by the hand detection section. hand drying equipment. a maintenance panel that is removably attached to the casing and covers the air purifier while being attached to the casing;
A panel detection unit that detects whether the maintenance panel is attached to the housing,
The control unit is characterized in that, when the panel detection unit detects removal of the maintenance panel while the airflow generation unit and the air purification unit are energized, the control unit stops energization to the air purification unit. The hand drying device according to claim 9. The control unit is configured to stop energizing the air flow generation unit and the air purification unit when the panel detection unit detects removal of the maintenance panel while the air flow generation unit and the air purification unit are energized. The hand drying device according to claim 10, characterized in that the hand drying device is stopped. The hand drying device according to any one of claims 9 to 11, wherein the control unit operates the air purifying unit after the air flow generating unit is stopped. The control unit operates the air purifying unit at a maximum air volume until a preset time has elapsed after the air flow generation unit stops, and operates the air purifying unit to the maximum after the preset time has elapsed. The hand drying device according to any one of claims 9 to 12, characterized in that the hand drying device is operated at an air volume smaller than the air volume. The hand drying device according to any one of claims 9 to 13, wherein the control unit stops the air purifying unit while the air flow generating unit is in operation.

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