JP2022022738A - Hand-dryer - Google Patents

Abstract

To provide a hand-dryer capable of drying a hand without spreading to the outside, bacteria and viruses adhering to the hand.SOLUTION: A hand-dryer 1 for drying a hand with a wind has: a cylindrical hand insertion part 10 capable of inserting a hand to a cylindrical axial direction; a blow-out part 20 including a blower 21 for generating a swirling airflow by blowing out a wind in a cylindrical circumferential direction into the hand insertion part 10 from a cylindrical wall part 11 of the hand insertion part 10; and a suction part 30 including a Sirocco fan 32 for changing the swirling airflow into a vortex airflow sucked to the cylindrical bottom side by applying suction force from the cylindrical bottom side into the hand insertion part 10.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hand dryer. More specifically, it relates to a hand dryer that dries hands with the wind.

Patent Document 1 discloses a hand dryer that dries wet hands by blowing air after washing hands. The hand dryer is configured to detect the hand by a sensor and send the wind to the hand by extending the hand to the air outlet.

Japanese Unexamined Patent Publication No. 2013-184023

In the above-mentioned conventional technique, there is a possibility that bacteria and viruses adhering to the hands may spread indoors due to the wind blown from the air outlet. Therefore, the present invention provides a hand dryer that dries hands without spreading bacteria and viruses adhering to the hands to the outside.

In order to solve the above problems, the hand dryer of the present invention takes the following measures. That is, it is a hand dryer that dries hands with wind, and blows wind in the circumferential direction from the tubular hand insertion part where the hand can be inserted in the direction of the cylinder axis and the cylinder wall part of the hand insertion part into the hand insertion part. Equipped with a blower equipped with a blower for generating a swirling airflow, and a suction blower equipped with a suction blower that applies suction pressure from the bottom side of the cylinder to the hand-inserted part to change the swirling airflow into a vortex air that is sucked toward the bottom side of the cylinder. It has a suction part and a suction part.

According to the above configuration, the combination of the blowout portion that generates a swirling airflow in the hand insertion portion and the suction portion that applies suction pressure from the cylinder bottom side into the hand insertion portion causes suction to be sucked into the cylinder bottom side into the hand insertion portion. Can generate a vortex. Due to the vortex airflow, the surface of the hand or arm inserted in the hand insertion portion can be exposed to a wide range of wind for a long time. Therefore, the hands can be dried efficiently in a short time. Moreover, since it is a suction type, it is possible to dry the hands without spreading the bacteria and viruses adhering to the hands to the outside.

Further, the hand dryer of the present invention may be further configured as follows. The hand dryer also responds to the detection of the sterilizing liquid ejection part equipped with a ejection pump that ejects the sterilizing liquid into the hand insertion part, the detection sensor that detects the insertion of the hand into the hand insertion part non-contactly, and the detection sensor. It has a blower for blowing, a blower for suction, and a control unit for controlling the operation of the blowing pump.

According to the above configuration, the vortex airflow can be automatically generated or stopped according to the insertion and removal of the hand from the hand insertion portion. In addition, the bactericidal solution can be automatically ejected or stopped at a predetermined timing on the manual insertion portion. Therefore, in addition to being able to easily clean the hands and arms, the device body such as the hand insertion portion can also be easily cleaned.

Further, the hand dryer of the present invention may be further configured as follows. The cylinder wall portion of the manual insertion portion has a tubular shape that tapers toward the bottom side of the cylinder.

According to the above configuration, since the suction port is narrowed down, a high suction pressure can be effectively applied to the inside of the manual insertion portion.

Further, the hand dryer of the present invention may be further configured as follows. The cylinder wall portion of the manual insertion portion has a double cylinder wall structure inside and outside. An outlet for wind to the inside of the hand insertion part is formed on the inner cylinder wall, and an air passage for sending wind from the blower for blowing air provided outside the hand insertion part between the inner cylinder wall and the outer cylinder wall to the outlet is provided. It is formed.

According to the above configuration, the tubular wall structure of the hand-inserted portion can be used to form a rationally and good-looking blower path for blowing air from the blower for blowing out to the outlet of the hand-inserted portion.

Further, the hand dryer of the present invention may be further configured as follows. The suction blower is a centrifugal blower that rotates around an axis in the suction direction and sends wind in the centrifugal direction. The suction unit has an exhaust port that opens in the centrifugal direction of the suction blower to exhaust the wind, and a drain port that opens in the gravity direction and drains water separated from the wind sent from the suction blower.

According to the above configuration, the centrifugal blower can rationally perform suction to the manual insertion portion and separation of the sucked air and water.

Further, the hand dryer of the present invention may be further configured as follows. The suction portion and the blowout portion are composed of a suction blowout portion provided with a suction blower that also serves as a blowout blower and a suction blower. The suction / blowing unit is provided with a water filter that filters the air sucked from the manual insertion unit through the stored water and a HEPA filter that further passes the air that has passed through the water filter to filter, and has passed through the HEPA filter. It has a circulation type structure that blows clean air into the manual insertion part.

According to the above configuration, the suction blowing portion can rationally and effectively purify the wind itself blown into the manual insertion portion.

Further, the hand dryer of the present invention may be further configured as follows. The hand dryer is further provided with a separating portion that is interposed between the hand insertion portion and the suction blowing portion to take in the air sucked to the bottom side of the cylinder of the hand insertion portion and separate it into air and water. The separation part has an inverted conical inclined cylinder wall that generates a separation air flow that takes in the wind sucked to the bottom side of the cylinder of the manual insertion part from the top in the direction of the cylinder circumference and swirls downward. , The suction pipe that enters the inclined cylinder wall from above and sucks the separated airflow upward by the suction pressure applied from the suction blower and sends it to the suction blowing part, and the suction pipe that opens in the direction of gravity of the inclined cylinder wall and is separated by the separated airflow. It has a drain outlet for draining the separated water in the direction of gravity.

According to the above configuration, the separation part interposed between the hand insertion part and the suction blowout part appropriately separates water from the wind sucked from the hand insertion part and drains it, while filtering the air with a water filter or the like. Can be appropriately taken into the suction blowout portion provided with.

Further, the hand dryer of the present invention may be further configured as follows. The suction blowout unit further includes a deep ultraviolet LED that sterilizes the stored water of the water filter and / or the wind that has passed through the stored water by irradiating it with deep ultraviolet rays.

According to the above configuration, the deep ultraviolet rays emitted from the deep ultraviolet LED can easily and effectively sterilize the stored water of the water filter and the wind that has passed through the water filter. Note that deep ultraviolet light is a name for light in a wavelength region (200 to 300 nm) shorter than that of ultraviolet light.

It is a perspective view which shows the appearance of the hand dryer which concerns on 1st Embodiment. It is a perspective view which looked at the hand dryer from the rear side. It is a partial cross-sectional perspective view showing the internal structure of a hand dryer. It is sectional drawing corresponding to FIG. 3 which shows the flow of wind in a hand dryer. FIG. 5 is a sectional view taken along line VV of FIG. It is a perspective view which shows the appearance of the hand dryer which concerns on 2nd Embodiment. It is a partial cross-sectional perspective view showing the internal structure of a hand dryer. It is sectional drawing corresponding to FIG. 7 which shows the flow of wind in a hand dryer. It is a perspective view which shows the appearance of the hand dryer which concerns on 3rd Embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

<< First Embodiment >>
(About the outline configuration of the hand dryer 1)
First, the configuration of the hand dryer 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. In the following description, when each direction such as front-back, up-down, left-right, etc. is shown, it means each direction shown in each figure. That is, it refers to each direction of the front, the back, the left and right, and the top and bottom of the hand dryer 1 with reference to the direction in which the user looks at the hand dryer 1 from the position where the user stands in front of the hand dryer 1.

As shown in FIGS. 1 to 4, the hand dryer 1 according to the present embodiment is installed in a place equipped with a hand-washing facility such as a washroom or a restroom, and serves as a dryer for drying wet hands with wind after hand-washing. It is composed. The hand dryer 1 is attached to a hand washing counter or a wall and installed.

The hand dryer 1 has a configuration in which a user inserts a hand into a cylindrical container-shaped hand insertion portion 10 from above, the detection sensor 50 detects the insertion of the hand, and the wind is automatically blown to the hand. Will be done. Then, the hand dryer 1 is configured to apply suction pressure to the hand insertion portion 10 from the cylinder bottom side together with the above-mentioned wind blowing, and to suck the wind blown into the hand insertion portion 10 to the cylinder bottom side. To.

By the above suction, the hand dryer 1 dries the hands without spreading the bacteria and viruses adhering to the hands to the outside. Specifically, as shown in FIGS. 4 to 5, the hand dryer 1 is configured such that the wind blown into the hand insertion portion 10 is blown in the cylinder circumferential direction, and the cylinder is blown into the hand insertion portion 10. It is designed to generate a swirling airflow in the circumferential direction.

Then, as shown in FIG. 4, the hand dryer 1 applies a suction pressure to the hand insertion portion 10 from the cylinder bottom side to a vortex airflow (cyclone) in which the swirling airflow is sucked to the cylinder bottom side. It is designed to change. As a result, the hand dryer 1 is adapted to apply the vortex airflow to the surface of the hand or arm inserted in the hand insertion portion 10 over a wide range for a long time. As a result, the hands can be dried efficiently and hygienically in a short time.

Further, in the hand dryer 1, when the user's hand is inserted into the hand insertion portion 10, a bactericidal solution (ethanol, hypochlorite water, etc.) is ejected to the hand in the hand insertion portion 10 at a predetermined timing. Then, the hands can be sterilized and cleaned. Further, the hand dryer 1 is returned to the initial standby state by automatically stopping the blowing and suction of the above-mentioned wind and the ejection of the sterilizing liquid by pulling out the hand from the hand insertion portion 10. ing.

(Regarding the configuration of each part of the hand dryer 1)
Hereinafter, a specific configuration of each part of the hand dryer 1 will be described. In the following description, any one of FIGS. 1 to 4 will be referred to as appropriate for the detailed shape and reference numeral of each part. Further, for the flow of wind in the hand dryer 1, FIG. 4 shall be referred to as appropriate.

The hand dryer 1 has a cylindrical container-shaped hand insertion portion 10, a blowout portion 20 that blows wind into the hand insertion portion 10, and a suction portion 30 that applies suction pressure into the hand insertion portion 10 from the bottom side of the cylinder. .. Further, the hand dryer 1 detects the sterilizing liquid ejecting portion 40 that ejects the sterilizing liquid into the hand insertion portion 10, the detection sensor 50 that detects the insertion of the hand into the hand insertion portion 10 in a non-contact manner, and the detection sensor 50. It has a control unit 60 that controls the blowing and suction of wind and the ejection of sterilizing liquid according to the above.

(About the manual insertion part 10)
The hand insertion portion 10 is formed in a substantially cylindrical cylinder wall portion 11 that opens upward, a round hole-shaped hand insertion opening 12 that forms an upper opening of the cylinder wall portion 11, and an inner cylinder wall 11A of the cylinder wall portion 11. It has a plurality of vertically elongated hole-shaped outlets 13 and a cylindrical connection port 14 forming an opening on the bottom side of the cylinder wall portion 11. The manual insertion slot 12 has an opening shape having a size large enough to allow the user to insert either the right hand or the left hand. The cylinder wall portion 11 has an inner / outer double hollow cylinder wall structure including an inner cylinder wall 11A forming a cylinder wall on the inner peripheral side of the manual insertion portion 10 and an outer cylinder wall 11B forming a cylinder wall on the outer peripheral side. It is said that the configuration is provided with.

The tubular wall portion 11 has a cylindrical shape in which the hand insertion region A1, which is a region from the upper hand insertion opening 12 to the depth position where the hand or arm is inserted, extends in a cylindrical shape in the height direction. Further, the cylinder wall portion 11 has a substantially inverted truncated cone shape in which the lower region A2, which is a region below the manual insertion region A1, is narrowed in a tapered shape toward the connection port 14 on the bottom side of the cylinder. Will be done. The connection port 14 on the bottom side of the cylinder is formed in a cylindrical shape concentric with the cylinder wall portion 11 at a position directly below the cylinder wall portion 11.

On the inner cylinder wall 11A of the cylinder wall portion 11, air outlets 13 cut into a vertically long slit shape are formed at four positions in the cylinder circumferential direction. These outlets 13 are formed at four positions on the inner cylinder wall 11A in the circumferential direction at equal intervals. Each outlet 13 has a slit shape that is cut straight in the height direction that is the direction of the cylinder axis of the inner cylinder wall 11A.

Each outlet 13 penetrates the inner cylinder wall 11A in the thickness direction and communicates with the air passage 11C forming an internal space between the inner cylinder wall 11A and the outer cylinder wall 11B. Each outlet 13 has a shape cut into a straight and continuous shape in the height direction over the entire area in the height direction excluding the upper edge portion of the manual insertion region A1.

A louver 13A that directs the blown air in the circumferential direction is attached to each outlet 13 along the opening edge facing the inside of the manual insertion portion 10. By these louvers 13A, each outlet 13 is in a state where the openings thereof are directed so as to blow out the wind in the counterclockwise direction when viewed from the insertion direction of the hand. When the wind in the counterclockwise direction is blown out from each outlet 13, a swirling airflow swirling in the circumferential direction is generated in the manual insertion portion 10 due to the interaction of the winds (see FIG. 5).

(About the outlet 20)
The blowout portion 20 is a blower 21 installed on the housing 31 of the suction portion 30 described later, a blower motor 22 for driving the blower 21, and a blower 21 from the blower 21 to the air passage 11C in the cylinder wall portion 11 of the manual insertion portion 10. It has a blower pipe 23 for sending wind. The blower 21 is driven by the blower motor 22 to take in air from the outside and send the air to the blower pipe 23.

The blower motor 22 is directly connected to the upper part of the shaft of the blower 21, and the drive and stop are electrically controlled by a control unit 60 described later. The blower pipe 23 is a duct that connects the exhaust port of the blower motor 22 and the blower path 11C in the cylinder wall portion 11 of the manual insertion portion 10 to each other. Here, the blower 21 corresponds to the "blower for blowing out" of the present invention.

(About suction unit 30)
The suction unit 30 includes a housing 31 having a substantially cylindrical box shape, a sirocco fan 32 installed in the housing 31, a fan motor 33 for driving the sirocco fan 32, and a germ adsorption unit installed in the housing 31. The metal filter 34 and the like. The housing 31 has a small box shape having an elliptical shape that is long in the front-rear direction in a plan view. Here, the sirocco fan 32 corresponds to the "suction blower" of the present invention.

The housing 31 has a configuration in which a connection port 31A that opens in a round hole shape is formed in the front region of the top plate portion. The housing 31 is integrally assembled to the manual insertion portion 10 by connecting the connection port 31A to the connection port 14 on the bottom side of the cylinder of the manual insertion portion 10 described above from below. The housing 31 is configured to have an exhaust port 31B formed on the side wall thereof to exhaust the wind sucked from the inside of the hand insertion portion 10 to the outside through the sirocco fan 32.

The exhaust port 31B has a shape that is extended rearward from the rear side wall of the housing 31 by a cylindrical portion connected to the rear side wall of the housing 31 so as to communicate with the inside of the housing 31. Further, the housing 31 is configured to have a drainage port 31C formed in the rear region of the bottom plate portion of the housing 31 to drain water separated from the wind exhausted by the sirocco fan 32 downward by the action of gravity.

The drainage port 31C has a shape that opens downward from the bottom plate portion of the housing 31 in an overhanging shape by a cylindrical portion connected to the rear region of the bottom plate portion of the housing 31 so as to communicate with the inside of the housing 31. An S trap 70 (drain trap) bent in an S shape in the height direction is connected to the drain port 31C. As a result, the water discharged from the drain port 31C is hygienically discharged to the outside via the S trap 70.

The sirocco fan 32 is a centrifugal blower that takes in wind from above in the direction of the axis of rotation and sends it in the centrifugal direction. The central axis of rotation of the sirocco fan 32 is arranged at a position on the same axis as the central axis of the cylinder wall portion 11 of the manual insertion portion 10. The sirocco fan 32 is driven by a fan motor 33 to apply suction pressure into the manual insertion portion 10 from the connection port 31A directly above the connection port 31A to suck the air in the manual insertion portion 10.

Then, the sirocco fan 32 sends out the sucked wind in the centrifugal direction in the housing 31. The housing 31 is formed in a semi-cylindrical shape in which the peripheral side wall of the region on the front side from the central axis of the sirocco fan 32 is curved in an arc shape drawn around the central axis of the sirocco fan 32.

Therefore, of the wind sent out from the sirocco fan 32 in the centrifugal direction, the wind on the rear half is sent out to the rear region of the housing 31, but the wind on the front half is also formed into the semi-cylindrical shape. It is sent to the rear side along the curved shape of the peripheral side wall on the front side.

The fan motor 33 is installed in the lower part of the housing 31 and is directly connected to the lower part of the shaft of the sirocco fan 32. The fan motor 33 is electrically controlled to be driven and stopped by a control unit 60 described later.

The metal filter 34 is made of a metal non-woven fabric obtained by forming a sheet of metal fibers such as stainless steel by entanglement or sintering by needle punching. The metal filter 34 is provided so as to partition the front region in the housing 31 where the sirocco fan 32 is arranged and the rear region where the exhaust port 31B and the drain port 31C are formed. As a result, the metal filter 34 adsorbs bacteria and viruses contained in the wind by passing the wind sent out from the sirocco fan 32 in the centrifugal direction, and filters and purifies the wind and water to the exhaust port 31B and drainage. It is discharged to the outside from the mouth 31C.

(About the sterilizing liquid ejection part 40)
The sterilizing liquid ejection unit 40 has an ejection nozzle 41 provided on the upper edge portion of the inner cylinder wall 11A of the manual insertion portion 10, and a sterilizing liquid supply unit 42 for quantitatively supplying the sterilizing liquid to the ejection nozzle 41. The ejection nozzle 41 is attached to the inner cylinder wall 11A of the manual insertion portion 10 and is provided so as to face the ejection port from the inner cylinder wall 11A into the manual insertion portion 10.

The sterilizing liquid supply unit 42 sterilizes the ejection nozzle 41 via the supply tube 42A, which is passed through the air passage 11C in the cylinder wall portion 11 of the manual insertion portion 10 and is connected to the ejection nozzle 41, and the supply tube 42A. It has a ejection pump 42B that sends out liquid. In the sterilizing liquid ejection unit 40, the drive and stop of the ejection pump 42B of the sterilizing liquid supply unit 42 are electrically controlled by the control unit 60 described later, and the ejection and stopping of the sterilizing liquid from the ejection nozzle 41 are controlled. It is considered to be a configuration.

(About the detection sensor 50)
The detection sensor 50 is provided on the upper edge portion of the inner cylinder wall 11A of the manual insertion portion 10. The detection sensor 50 is composed of an infrared sensor and has a configuration capable of non-contactly detecting whether or not a user's hand has been inserted into the hand insertion portion 10.

(About control unit 60)
The control unit 60 is composed of, for example, a microcomputer, and although not shown, the control unit 60 includes a CPU, a storage device such as a Flash ROM, and a functional unit such as a timer. The control unit 60 is electrically connected to the detection sensor 50, and when the power is turned on and the function is started, the detection sensor 50 outputs a detection signal having a predetermined detection time length and interval.

When the detection sensor 50 detects that the user's hand has been inserted into the manual insertion unit 10, the control unit 60 first drives the blower motor 22 and the fan motor 33. As a result, the blower 21 and the sirocco fan 32 start to operate, and the swirling airflow in the tube circumferential direction is blown out from each outlet 13, and suction pressure is applied from the bottom side into the manual insertion portion 10. A vortex airflow that is sucked into the suction unit 30 is generated.

Further, the control unit 60 also drives the ejection pump 42B after a predetermined time has elapsed from the start of driving the blower motor 22 and the fan motor 33. As a result, a certain amount of sterilizing liquid is ejected from the ejection nozzle 41 to the hand. The control unit 60 drives the ejection pump 42B to eject a certain amount of sterilizing liquid from the ejection nozzle 41, and then stops the driving of the ejection pump 42B.

After that, the control unit 60 continues to drive the blower motor 22 and the fan motor 33 while the hand is detected by the detection sensor 50. Then, when the hand is pulled out from the hand insertion unit 10 and the hand cannot be detected by the detection sensor 50, the control unit 60 stops driving the blower motor 22 and the fan motor 33.

Even if the user does not put his / her hand in the manual insertion unit 10, the control unit 60 drives the ejection pump 42B at a predetermined fixed time or at a fixed time to inject the sterilizing liquid into the manual insertion unit 10. It is designed to spout out. As a result, the device main body itself such as the inner cylinder wall 11A of the manual insertion portion 10 and the housing 31 of the suction portion 30 can be automatically sterilized on a regular basis.

(How to use Hand Dryer 1)
Subsequently, with reference to FIG. 4, a method of using the hand dryer 1 of the present embodiment and the operation of each part will be described. That is, when the user inserts either the right hand or the left hand into the hand insertion port 12, the detection sensor 50 detects the insertion of the hand, and the swirling airflow in the circumferential direction is blown out from each outlet 13. reference).

Further, suction pressure is applied from the bottom side into the manual insertion portion 10, and the swirling airflow is changed into a vortex airflow sucked into the suction portion 30. The suctioned vortex airflow allows the hands to be hygienically dried without diffusing the wind blown into the hand insertion portion 10 from the hand insertion port 12 to the outside. Specifically, the vortex airflow can blow a long wind over a wide range on the surface of the hand or arm inserted into the hand insertion portion 10 to dry the hand or arm efficiently and hygienically in a short time. can.

Specifically, in the hand insertion portion 10, the hand insertion region A1 (see FIG. 3) into which the user's hand is inserted has a cylindrical shape with a small cylinder. Therefore, the user's hand can be inserted deeply into the inside, and the vortex airflow can be efficiently applied to the hand inside the cylindrical shape to dry the hand.

Further, the manual insertion portion 10 has a substantially inverted truncated cone shape in which the lower region A2 (see FIG. 3) is narrowed down toward the connection port 14 on the bottom side of the cylinder. As a result, the connection port 14 (suction port) of the hand insertion portion 10 with the suction portion 30 is narrowed down narrower than the hand insertion port 12, and a high suction pressure is effectively applied to the inside of the hand insertion portion 10. Can be done. Moreover, the swirling airflow flowing in the manual insertion portion 10 can be rectified and sucked so as to be smoothly guided to the suction portion 30 by the inverted truncated cone-shaped inclined surface narrowed down in a tapered shape.

(summary)
Summarizing the above, the hand dryer 1 according to the first embodiment has the following configuration. In the following, the reference numerals given in parentheses are the reference numerals corresponding to the respective configurations shown in the above embodiments.

That is, the hand dryer (1) has a tubular hand insertion portion (10) into which a hand can be inserted in the direction of the cylinder axis, and a hand insertion portion (10) from the cylinder wall portion (11) to the inside of the hand insertion portion (10). A blower (20) equipped with a blower (21) for blowing out air in the circumferential direction of the cylinder to generate a swirling airflow, and a hand-inserting part (10) in which suction pressure is applied from the bottom side of the cylinder to generate a swirling airflow. It has a suction unit (30) provided with a suction blower (32) that changes into a vortex air flow that is sucked toward the bottom of the cylinder.

According to the above configuration, the blowout portion (20) that generates a swirling airflow in the hand insertion portion (10) and the suction portion (30) that applies suction pressure from the bottom side of the cylinder into the hand insertion portion (10). Depending on the combination, a vortex airflow sucked toward the bottom of the cylinder can be generated in the hand insertion portion (10). Due to the vortex airflow, the surface of the hand or arm inserted in the hand insertion portion (10) can be exposed to the wind for a long time over a wide range. Therefore, the hands can be dried efficiently in a short time. Moreover, since it is a suction type, it is possible to dry the hands without spreading the bacteria and viruses adhering to the hands to the outside.

Further, the hand dryer (1) further has a sterilizing liquid ejection portion (40) provided with a ejection pump (42B) for ejecting the sterilizing liquid into the hand insertion portion (10), and a hand to the hand insertion portion (10). Control to control the operation of the blower blower (21), suction blower (32), and blower pump (42B) according to the detection of the detection sensor (50) that detects the insertion of the It has a part (60) and.

According to the above configuration, the vortex airflow can be automatically generated or stopped according to the insertion and removal of the hand from the hand insertion portion (10). In addition, the bactericidal solution can be automatically ejected or stopped at the manually inserted portion (10) at a predetermined timing. Therefore, in addition to being able to easily clean the hands and arms, the device body such as the hand insertion portion (10) can also be easily cleaned.

Further, the cylinder wall portion (11) of the hand insertion portion (10) has a cylinder shape that tapers toward the bottom side of the cylinder. According to the above configuration, since the suction port is narrowed down, a high suction pressure can be effectively applied to the hand insertion portion (10).

Further, the cylinder wall portion (11) of the manual insertion portion (10) has a double cylinder wall structure inside and outside. A wind outlet (13) into the manual insertion portion (10) is formed in the inner cylinder wall (11A), and the manual insertion portion (10) is formed between the inner cylinder wall (11A) and the outer cylinder wall (11B). A blower path (11C) for sending wind from the blower blower (21) provided outside the above to the blower outlet (13) is formed. According to the above configuration, the air passage (11C) for sending air from the blower blower (21) to the outlet (13) of the manual insertion portion (10) by utilizing the tubular wall structure of the manual insertion portion (10). Can be formed reasonably and nicely.

Further, the suction blower (32) is a centrifugal blower that rotates around an axis in the suction direction and sends wind in the centrifugal direction. The suction unit (30) is separated from the exhaust port (31B) that opens in the centrifugal direction of the suction blower (32) to exhaust the wind and the wind that opens in the gravity direction and is sent from the suction blower (32). It has a drainage port (31C) for draining the water. According to the above configuration, the centrifugal blower can rationally perform suction to the manual insertion portion (10) and separation of the sucked air and water.

<< Second Embodiment >>
(About the outline configuration of the hand dryer 2)
Subsequently, the configuration of the hand dryer 2 according to the second embodiment will be described with reference to FIGS. 6 to 8. In the hand dryer 2 according to the present embodiment, the air taken in directly from the outside is not blown into the hand insertion portion 10, but the air sucked from the hand insertion portion 10 is filtered and cleaned as the blowing wind. It is a recycling type blowout structure that is reused.

Specifically, the hand dryer 2 applies suction pressure to the cylindrical container-shaped hand insertion portion 10 and the hand insertion portion 10 from the bottom side of the cylinder to suck wind, and filters the air into the inside of the hand insertion portion 10. It has a suction blowing portion 80 for blowing wind into the air. Here, the suction blowing portion 80 corresponds to the "suction portion" and the "blowing portion" of the present invention. Further, the hand dryer 2 detects the sterilizing liquid ejecting portion 40 that ejects the sterilizing liquid into the hand insertion portion 10, the detection sensor 50 that detects the insertion of the hand into the hand insertion portion 10 in a non-contact manner, and the detection sensor 50. It has a control unit 60 that controls the blowing and suction of wind and the ejection of sterilizing liquid according to the above.

Further, the hand dryer 2 has a separating portion 90 interposed between the hand insertion portion 10 and the suction blowing portion 80 to take in the air sucked to the bottom side of the cylinder of the hand insertion portion 10 and separate it into air and water. Have. The configurations of the manual insertion portion 10, the sterilizing liquid ejection portion 40, and the detection sensor 50 are substantially the same as those shown in the first embodiment. Therefore, these configurations are designated by the same reference numerals as those shown in the first embodiment, and detailed description thereof will be omitted.

The control unit 60 also has substantially the same configuration as that shown in the first embodiment in that it controls the blowing and suction of wind and the ejection of the sterilizing liquid in response to the detection of the detection sensor 50. However, the control unit 60 is different from the configuration shown in the first embodiment in that the object to be controlled is the suction blowout unit 80. Therefore, the control unit 60 will be described in detail later only in the differences from the configuration shown in the first embodiment.

In the following description, any one of FIGS. 6 to 8 shall be appropriately referred to for the shape and reference numeral of each part. Further, for the flow of wind in the hand dryer 2, FIG. 8 shall be referred to as appropriate.

(About the suction outlet 80)
The suction / blowing portion 80 includes a housing 81 having a vertically long box shape that is long in the front-rear direction, a sirocco fan 82 installed in the housing 81, and a fan motor 83 that drives the sirocco fan 82. Further, the suction blowing portion 80 has a water filter 84 provided in the housing 81 to pass the air sucked from the manual insertion portion 10 through the stored water W and filter the air. Here, the sirocco fan 82 corresponds to the "suction blower", "blow blower", and "suction blow blower" of the present invention.

Further, the suction blowing portion 80 has a deep ultraviolet LED 85 provided in the housing 81 and sterilizing the stored water W of the water filter 84 and the wind passing through the stored water W by irradiating the deep ultraviolet rays. Further, the suction blowing portion 80 has an intermediate filter 86 provided in the housing 81 to further pass and filter the wind irradiated with deep ultraviolet rays.

Further, the suction blowing portion 80 has a HEPA filter 87 provided in the housing 81 to further pass and filter the wind that has passed through the intermediate filter 86. Further, the suction blowout portion 80 is connected to the lower part of the rear side wall of the housing 81, and has a blower pipe 88 that sends the wind sent out from the sirocco fan 82 to the blower passage 11C in the cylinder wall portion 11 of the manual insertion portion 10. Have.

Inside the housing 81, a first partition wall 81A that partitions the internal space back and forth is formed. Further, inside the housing 81, a small room is formed in the rear upper part in the space on the rear side partitioned by the first partition wall 81A so that the sirocco fan 82 can be attached and the fan motor 83 can be stored. The second partition wall 81B is formed.

The sirocco fan 82 is a centrifugal blower that takes in wind from the front in the direction of the axis of rotation and sends it in the centrifugal direction. The sirocco fan 82 is provided so that its rotation center axis is connected to the front wall portion of the second partition wall 81B and faces in the front-rear direction. The sirocco fan 82 is driven by a fan motor 83 to suck in wind from the front and send it in the centrifugal direction.

The first partition wall 81A located in front of the sirocco fan 82 is formed with a through hole that penetrates the front region of the sirocco fan 82. The through hole has a shape that is extended forward from the first partition wall 81A by a cylindrical portion 81C connected to the front portion of the first partition wall 81A so as to communicate with the rear space of the first partition wall 81A. It is said that.

The sirocco fan 82 is driven by a fan motor 83 to apply suction pressure to the front space from a through hole (inside the cylinder of the cylindrical portion 81C) formed in the first partition wall 81A in front of the sirocco fan 82, and air is supplied from the front space. Suction. Then, the sirocco fan 82 sends out the sucked air in the centrifugal direction in the housing 81, and sends it out to the blower pipe 88 connected to the lower part of the rear side wall of the housing 81.

The fan motor 83 is installed in a small room in the upper rear part of the housing 81 partitioned by the second partition wall 81B, and is directly connected to the rear part of the shaft of the sirocco fan 82. The fan motor 83 is electrically controlled to be driven and stopped by the control unit 60.

The water filter 84 is provided in the lower region of the front space partitioned by the first partition wall 81A in the housing 81. Specifically, the water filter 84 has a circular tube-shaped suction tube 84A connected to the lower surface of the front region of the top plate portion of the housing 81, and eaves from the peripheral side surface slightly above the lower end portion of the suction tube 84A. It has a first eaves plate 84B overhanging in a shape and a second eaves plate 84C overhanging forward from a position higher than the first eaves plate 84B of the first partition wall 81A. The water filter 84 functions by storing the stored water W in the lower region of the front space partitioned by the first partition wall 81A in the housing 81.

The upper end of the suction pipe 84A is connected to the top plate of the housing 81 so as to communicate with the outside. The suction pipe 84A is provided so as to hang straight downward from the upper end portion and extend to a lower position that does not reach the bottom plate portion of the housing 81.

The first eaves plate 84B is configured as a shielding plate that projects so as to widely cover the stored water W stored in the lower region of the front space in the housing 81 partitioned by the first partition wall 81A from above. Specifically, the first eaves plate 84B has a wide plate shape that projects from the peripheral side surface of the suction pipe 84A to the periphery and connects to the left and right and front inner peripheral walls of the housing 81. Further, the first eaves plate 84B has a shape that projects rearward from the peripheral side surface of the suction pipe 84A, but extends only to a position that does not reach the first partition wall 81A.

The first eaves plate 84B functions as a presser so that the stored water W stored below the first eaves plate 84B does not scatter upward when it is agitated and mixed with the wind sucked from the suction pipe 84A. The first eaves plate 84B has a shape that projects downward in an umbrella shape around the peripheral side surface of the suction pipe 84A. As a result, the first eaves plate 84B can appropriately suppress the upward scattering of the stored water W.

The second eaves plate 84C is configured as a shielding plate overhanging so as to widely cover the space between the first eaves plate 84B and the first partition wall 81A from above. Specifically, the second eaves plate 84C has a shape that projects forward from a position higher than the first eaves plate 84B of the first partition wall 81A. The second eaves plate 84C does not reach the suction pipe 84A, but has a shape that projects forward to a position where the arrangement in the front-rear direction overlaps with the first eaves plate 84B.

The second eaves plate 84C functions as a presser for suppressing the scattering of the stored water W described above when it may scatter upward beyond the first eaves plate 84B. The second eaves plate 84C has a long plate shape connected to the left and right inner peripheral walls of the housing 81, and projects horizontally forward from the first partition wall 81A. The second eaves plate 84C has a shape that bends and extends from a position where the arrangement in the front-rear direction overlaps with the first eaves plate 84B so as to incline forward. As a result, the second eaves plate 84C can appropriately suppress the upward scattering of the stored water W.

The water filter 84 filters and purifies the air sucked from the suction pipe 84A as follows by the suction pressure applied from the sirocco fan 82 described later. That is, the water filter 84 sucks the wind on the upstream side from the suction pipe 84A by the suction pressure applied from the sirocco fan 82 and blows it into the stored water W. As a result, the stored water W is mixed with the blown wind so as to be agitated with this wind. As a result, bacteria and viruses contained in the wind are mixed with the stored water W, so that only the air from which the bacteria and viruses have been removed is flowed to the downstream side.

The deep ultraviolet LED 85 is composed of a light emitting diode that emits deep ultraviolet rays (light in a wavelength region (200 to 300 nm) shorter than that of ultraviolet rays). The deep ultraviolet LED 85 is electrically connected to the control unit 60, and is configured to be switched ON / OFF by the control unit 60.

The deep ultraviolet LED 85 is provided with a light emitting portion that is long in the left-right direction, and is installed in a horizontally long shape on the lower surface of the second eaves plate 84C. The deep ultraviolet LED 85 irradiates the deep ultraviolet rays downward, and irradiates the deep ultraviolet rays to the stored water W of the water filter 84 facing downward and the wind passing through the stored water W. As a result, the bacteria and viruses contained in the stored water W of the water filter 84 and the wind passing through the stored water W are killed.

The intermediate filter 86 is fitted in the cylindrical portion 81C connected to the first partition wall 81A. The intermediate filter 86 adsorbs and filters bacteria and viruses contained in the wind by passing the wind that passes through the water filter 84 and flows into the cylindrical portion 81C by the suction pressure applied from the sirocco fan 82. The purified wind is sent to the downstream side.

Specifically, the intermediate filter 86 is composed of a metal filter made of a non-woven fabric made of metal. The metal filter is made of a metal non-woven fabric obtained by forming a sheet of metal fibers such as stainless steel by entanglement or sintering by needle punching.

The HEPA filter 87 is fitted between the lower surface of the second partition wall 81B and the bottom plate portion of the housing 81. The HEPA filter 87 adsorbs bacteria and viruses contained in the wind by passing the wind flowing from the sirocco fan 82 to the blower pipe 88, and flows the filtered and purified wind to the downstream side. The HEPA filter 87 adsorbs bacteria and viruses at a higher adsorption rate than the intermediate filter 86.

(About the separation part 90)
The separating portion 90 has a connecting portion 91 having a substantially cylindrical box shape, an inclined tubular wall 92 having an inverted conical tubular shape connected to communicate with the connecting portion 91, and wind from the inclined tubular wall 92. It has a suction pipe 93 that sucks in and sends it to the suction pipe 84A of the suction blowout portion 80.

The connection portion 91 has a configuration in which a connection port 91A having a round hole shape is formed in the center of the top plate portion. The connection portion 91 is integrally assembled to the manual insertion portion 10 by connecting the connection port 91A to the connection port 14 on the bottom side of the cylinder of the manual insertion portion 10 from below. A connection pipe 91B is connected to the peripheral side wall on the rear side of the connection portion 91 to send the wind sucked from the inside of the manual insertion portion 10 into the inclined cylinder wall 92.

The inclined cylinder wall 92 is configured to be connected to the peripheral side wall on the front side of the upper end portion of the inclined cylinder wall 92 so that the connecting pipe 91B communicates with the peripheral side wall. Specifically, the connecting pipe 91B is connected to the inclined tubular wall 92 so as to open in the tubular circumferential direction in the inclined tubular wall 92. Therefore, the wind flowed from the connecting pipe 91B into the inclined cylinder wall 92 becomes a swirling airflow (separated airflow described later) that swirls in the cylinder circumferential direction in the inclined cylinder wall 92.

At the lower end of the inclined cylinder wall 92, a drainage port 92A is formed to drain water separated by the swirling airflow (separated airflow) downward by the action of gravity. An S trap 70 (drain trap) having the same configuration as that shown in the first embodiment is connected to the drain port 92A. As a result, the water discharged from the drain port 92A is hygienically discharged to the outside via the S trap 70.

The suction pipe 93 is set so that the end portion on the front side thereof is inserted into the center of the top plate portion of the inclined cylinder wall 92 from above and inserted to the vicinity of the center inside the inclined cylinder wall 92. There is. The end of the suction pipe 84A on the rear side in the drawing is connected to the upper end of the suction pipe 84A of the suction blowing portion 80 in a state of communicating with the upper end.

When the suction pressure is applied from the suction pipe 84A to the suction pipe 93 by the drive of the sirocco fan 82 of the suction outlet portion 80, the suction pressure is applied to the inside of the inclined cylinder wall 92 into which the suction pipe 93 is inserted. .. As a result, suction pressure is also applied to the inside of the connection portion 91 communicating with the inclined cylinder wall 92, and suction pressure is applied from the connection portion 91 into the manual insertion portion 10 to draw wind from the cylinder bottom side.

The wind sucked from the manual insertion portion 10 to the connection portion 91 by the suction pressure is passed through the connection pipe 91B to the upper end portion in the inclined cylinder wall 92 in the tubular circumferential direction. As a result, a swirling airflow (separated airflow) swirling in the circumferential direction of the cylinder is generated in the inclined cylinder wall 92.

The swirling airflow (separated airflow) is drawn downward by the suction pressure applied from the suction pipe 93 inserted into the inclined cylinder wall 92. As a result, the swirling airflow flowing in the inclined cylinder wall 92 is changed into a vortex airflow that is sucked downward. Further, the vortex airflow is changed into an updraft that is sucked up from the center of the vortex directly below the suction pipe 93.

Therefore, water is separated from the wind taken into the inclined cylinder wall 92 by the descending vortex airflow and the change of the airflow changed to the updraft directly under the suction pipe 93, and the water is discharged from the drain port 92A. .. Then, the wind from which the water is separated is sucked from the suction pipe 93 to the suction pipe 84A.

When the detection sensor 50 detects that the user's hand has been inserted into the manual insertion unit 10, the control unit 60 first drives the fan motor 83. As a result, the sirocco fan 82 starts to operate, suction pressure is applied to the inside of the manual insertion portion 10 from the bottom side of the cylinder, and air is sent from the blower pipe 88 to each outlet 13 to be sent to each outlet 13. A swirling airflow in the circumferential direction of the cylinder is blown into the manual insertion portion 10. As a result, a vortex airflow sucked toward the bottom of the cylinder is generated in the manual insertion portion 10.

The control unit 60 also drives the ejection pump 42B after a predetermined time has elapsed from the start of driving the fan motor 83. The point is the same as the configuration shown in the first embodiment. After that, the control unit 60 continues to drive the fan motor 83 while the hand is detected by the detection sensor 50. Then, when the hand is pulled out from the hand insertion unit 10 and the hand cannot be detected by the detection sensor 50, the control unit 60 stops driving the fan motor 83.

(summary)
Summarizing the above, the hand dryer 2 according to the second embodiment has the following configuration. In the following, the reference numerals given in parentheses are the reference numerals corresponding to the respective configurations shown in the above embodiments.

That is, the hand dryer (2) has a tubular hand insertion portion (10) into which a hand can be inserted in the direction of the cylinder axis, and a hand insertion portion (10) from the cylinder wall portion (11) to the inside of the hand insertion portion (10). A blower (80) equipped with a blower (82) for blowing out air in the circumferential direction of the cylinder to generate a swirling airflow, and a suction pressure is applied from the bottom side of the cylinder into the manual insertion part (10) to generate the swirling airflow. It has a suction unit (80) provided with a suction blower (82) that changes into a vortex air flow that is sucked toward the bottom of the cylinder.

According to the above configuration, the blowout portion (80) that generates a swirling airflow in the hand insertion portion (10) and the suction portion (80) that applies suction pressure from the bottom side of the cylinder into the hand insertion portion (10). Depending on the combination, a vortex airflow sucked toward the bottom of the cylinder can be generated in the hand insertion portion (10). Due to the vortex airflow, the surface of the hand or arm inserted in the hand insertion portion (10) can be exposed to the wind for a long time over a wide range. Therefore, the hands can be dried efficiently in a short time. Moreover, since it is a suction type, it is possible to dry the hands without spreading the bacteria and viruses adhering to the hands to the outside.

Further, the hand dryer (2) further has a sterilizing liquid ejection portion (40) provided with a ejection pump (42B) for ejecting the sterilizing liquid into the hand insertion portion (10), and a hand to the hand insertion portion (10). Control to control the operation of the blower blower (82), suction blower (82), and blower pump (42B) according to the detection of the detection sensor (50) that detects the insertion of the blower in a non-contact manner. It has a part (60) and.

According to the above configuration, the vortex airflow can be automatically generated or stopped according to the insertion and removal of the hand from the hand insertion portion (10). In addition, the bactericidal solution can be automatically ejected or stopped at the manually inserted portion (10) at a predetermined timing. Therefore, in addition to being able to easily clean the hands and arms, the device body such as the hand insertion portion (10) can also be easily cleaned.

Further, the cylinder wall portion (11) of the hand insertion portion (10) has a cylinder shape that tapers toward the bottom side of the cylinder. According to the above configuration, since the suction port is narrowed down, a high suction pressure can be effectively applied to the hand insertion portion (10).

Further, the cylinder wall portion (11) of the manual insertion portion (10) has a double cylinder wall structure inside and outside. A wind outlet (13) into the manual insertion portion (10) is formed in the inner cylinder wall (11A), and the manual insertion portion (10) is formed between the inner cylinder wall (11A) and the outer cylinder wall (11B). A blower path (11C) for sending wind from the blower blower (82) provided outside the above to the blower outlet (13) is formed. According to the above configuration, the air passage (11C) for sending air from the blower blower (82) to the outlet (13) of the manual insertion portion (10) by utilizing the tubular wall structure of the manual insertion portion (10). Can be formed reasonably and nicely.

Further, the suction unit (80) and the blower unit (80) are composed of a suction blower unit (80) provided with a suction blower blower (82) that also serves as a blower blower (82) and a suction blower (82). .. The suction blowing portion (80) further passes the water filter (84) that filters the air sucked from the manual insertion portion (10) through the stored water (W) and the wind that has passed through the water filter (84). It is provided with a HEPA filter (87) for filtering, and has a circulation type structure in which the cleaned air that has passed through the HEPA filter (87) is blown into the manual insertion portion (10). According to the above configuration, the suction blowing portion (80) can rationally and effectively clean the wind itself blown into the hand insertion portion (10).

Further, the hand dryer (2) further intervenes between the hand insertion portion (10) and the suction blowout portion (80) to take in the air sucked into the cylinder bottom side of the hand insertion portion (10). It is provided with a separation unit (90) for separating water and water. A cylinder inclined in an inverted conical shape in which the separation portion (90) takes in the wind sucked to the bottom side of the cylinder of the manual insertion portion (10) from the upper part in the circumferential direction of the cylinder and causes the separation airflow to flow while swirling downward. The separated airflow is sucked upward by the suction pressure applied from the inclined cylinder wall (92) having a shape and the suction blower (82) that enters the inclined cylinder wall (92) from above and reaches the suction outlet (80). It has a suction pipe (93) for feeding, and a drain port (92A) which opens in the direction of gravity of the inclined cylinder wall (92) and drains water separated by a separation air flow in the direction of gravity.

According to the above configuration, the separation portion (90) interposed between the hand insertion portion (10) and the suction blowout portion (80) appropriately separates water from the wind sucked from the hand insertion portion (10). While draining, air can be appropriately taken into a suction outlet (80) having a filtering function such as a water filter (84).

Further, the deep ultraviolet LED (85) in which the suction blowing portion (80) further irradiates the wind passing through the stored water (W) and / or the stored water (W) of the water filter (84) with deep ultraviolet rays to sterilize the wind. To prepare for. According to the above configuration, the deep ultraviolet rays emitted from the deep ultraviolet LED (85) can easily and effectively sterilize the stored water (W) of the water filter (84) and the wind that has passed through the water filter (84). Can be done.

<< Third Embodiment >>
(About the outline configuration of the hand dryer 1)
Subsequently, the configuration of the hand dryer 1 according to the third embodiment will be described with reference to FIG. In this embodiment, two hand dryers 1 shown in the first embodiment are provided side by side on the left and right sides. As a result, the user can use the two hand dryers 1 to dry the left and right hands at the same time, which is efficient.

<< About other embodiments >>
Although the embodiments of the present invention have been described above using the three embodiments, the present invention can be implemented in various embodiments shown below in addition to the above embodiments.

1. 1. The hand dryer may be configured such that the circulation type hand dryer shown in the second embodiment is provided side by side side by side as shown in the third embodiment.

2. 2. The hand-insertion portion does not necessarily have to have the opening serving as the hand-insertion opening straight upward. That is, the hand insertion portion may be installed at an angle to the front side so that the hand insertion port opens diagonally to the front side when viewed from the user. The manual insertion portion may have a cylindrical shape or a square tubular container shape. Further, the hand insertion portion may have a tubular shape as a whole, or an inverted frustum shape as a whole that tapers toward the insertion direction of the hand.

3. 3. The swirling airflow in the circumferential direction blown into the hand insertion portion may be set in either the clockwise direction or the counterclockwise direction with respect to the hand insertion direction. Further, the blowing portion that blows the wind in the tubular circumferential direction into the manual insertion portion may be one that blows the wind from only one place or two or more places in the manual insertion portion in the tubular peripheral direction. In addition to the blowout portion that blows wind from the outlet provided on the inner cylinder wall of the hand insertion portion, a blowout nozzle that is exposed from the inner wall surface of the inner cylinder wall or the upper part of the inner cylinder wall into the hand insertion portion is provided. It may be configured to blow out the wind from the blowing nozzle.

4. Various types of blowers and fans can be appropriately used for the blower for blowing, the blower for suction, and the blower for suction blowing. The deep ultraviolet LED may be provided so as to irradiate only the stored water of the water filter or only the wind passing through the stored water.

5. The filters provided in the suction section and suction blowout section are coarse dust filters (pre-filters: filters that mainly target particles of 50 μm or larger), medium- and high-performance filters (filters that mainly target particles of 25 μm or larger), and It may consist of either a HEPA filter or a ULPA filter. Further, it may be composed of a charging filter. Further, it may consist of a filter in which these are combined.

1 Hand dryer 2 Hand dryer 10 Hand dryer 11 Cylinder wall 11A Inner cylinder wall 11B Outer cylinder wall 11C Blower 12 Hand insertion port 13 Blowout 13A Louver 14 Connection port 20 Blower 21 Blower (blower for blowout)
22 Blower motor 23 Blower pipe 30 Suction part 31 Housing 31A Connection port 31B Exhaust port 31C Drain port 32 Sirocco fan (suction blower)
33 Fan motor 34 Metal filter 40 Bactericidal liquid ejection part 41 Blowout nozzle 42 Bactericidal liquid supply unit 42A Supply tube 42B Blowout pump 50 Detection sensor 60 Control unit 70 S trap 80 Suction outlet unit (suction unit, blowout unit)
81 Housing 81A 1st partition wall 81B 2nd partition wall 81C Cylindrical part 82 Sirocco fan (suction blower, blower blower, suction blower blower)
83 Fan motor 84 Water filter 84A Suction tube 84B 1st eaves plate 84C 2nd eaves plate 85 Deep UV LED
86 Intermediate filter 87 HEPA filter 88 Blower pipe 90 Separation part 91 Connection part 91A Connection port 91B Connection pipe 92 Inclined cylinder wall 92A Drainage port 93 Suction pipe A1 Manual insertion area A2 Lower area W Reservoir

Claims (8)

A hand dryer that dries your hands with the wind
A tubular hand insertion part that allows you to insert your hand in the direction of the cylinder axis,
A blowout unit provided with a blower for blowing air from the cylinder wall portion of the manual insertion portion to the inside of the manual insertion portion to generate a swirling airflow.
A hand dryer having a suction unit provided with a suction blower that applies suction pressure from the bottom side of the cylinder into the manual insertion portion to change the swirling airflow into a vortex airflow that is sucked toward the bottom side of the cylinder. The hand dryer according to claim 1.
The hand dryer further includes a sterilizing liquid ejection portion provided with an ejection pump for ejecting the sterilizing liquid into the manual insertion portion, a detection sensor for detecting the insertion of a hand into the manual insertion portion in a non-contact manner, and the detection sensor. A hand dryer having a blower for blowing, a blower for suction, and a control unit for controlling the operation of the blowing pump in response to the detection of the above. The hand dryer according to claim 1 or 2.
A hand dryer in which the cylinder wall portion of the hand insertion portion has a tubular shape that tapers toward the bottom side of the cylinder. The hand dryer according to any one of claims 1 to 3.
The cylinder wall portion of the hand insertion portion has a double inner and outer cylinder wall structure, and a wind outlet into the manual insertion portion is formed on the inner cylinder wall, and between the inner cylinder wall and the outer cylinder wall. A hand dryer in which a blower path for sending air from the blower blower provided outside the hand insertion portion to the blower outlet is formed. The hand dryer according to any one of claims 1 to 4.
The suction blower is a centrifugal blower that rotates around an axis in the suction direction and sends wind in the centrifugal direction.
The suction unit has an exhaust port that opens in the centrifugal direction of the suction blower to exhaust the wind, and a drain port that opens in the direction of gravity to drain water separated from the wind sent from the suction blower. Hand dryer with. The hand dryer according to any one of claims 1 to 4.
The suction unit and the blower unit are composed of a suction blower unit provided with a suction blower blower that also serves as the suction blower and the suction blower.
The suction blowing portion includes a water filter that filters the air sucked from the manual insertion portion through the stored water, and a HEPA filter that further passes the air that has passed through the water filter to filter the HEPA filter. A hand dryer having a circulation type structure that blows out the cleaned air that has passed through the air filter into the manual insertion part. The hand dryer according to claim 6.
Further, it is provided with a separating portion that is interposed between the hand insertion portion and the suction blowing portion to take in the air sucked to the bottom side of the cylinder of the hand insertion portion and separate it into air and water.
The separation part is an inverted conical inclined cylinder that generates a separation airflow that takes in the wind sucked to the bottom side of the cylinder of the manual insertion part from the upper part in the direction of the cylinder circumference and swirls downward. The wall, the suction pipe that enters the inclined cylinder wall from above and sucks the separated airflow upward by the suction pressure applied from the suction blower, and sends it to the suction outlet portion, and the gravity direction of the inclined cylinder wall. A hand dryer having a drainage port that opens to and drains water separated by the separation airflow in the direction of gravity. The hand dryer according to claim 6 or 7.
A hand dryer in which the suction blowing portion further sterilizes by irradiating the stored water of the water filter and / or the wind passing through the stored water with deep ultraviolet rays to sterilize the stored water.

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