JP2022115281A - Hand washing apparatus, operation method for the same, and hand washing system - Google Patents

Abstract

To provide a hand washing apparatus capable of washing and drying hands without splashing droplets to its surroundings, and an operation method for the same.SOLUTION: A hand washing apparatus 100 includes: a bowl 3 for receiving washing water; a water drainage line 10 that is connected to the bowl 3; a suction line 11 that is connected to the water drainage line 10; and a suction device 8 for sucking in air from the bowl 3 via the water drainage line 10 and the suction line 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hand-washing device provided in a restroom or the like, and a method of operating the hand-washing device. Furthermore, the invention relates to a handwashing system with a plurality of handwashing devices.

Traditionally, washbasins for washing hands and wet hands are installed in restrooms of various facilities (for example, commercial facilities such as hotels, supermarkets, and movie theaters, and public facilities such as hospitals, city halls, and libraries). A hand dryer is provided for drying. After washing hands in the sink, users of the restroom can move to the hand dryer to dry their wet hands.

International Publication No. 2018/168697 JP 2012-143307 A

However, most hand dryers are located away from the washbasin. As a result, the droplets adhering to the hands of the user who has washed his/her hands in the washbasin drop and wet the floor surface of the restroom before moving to the hand dryer.

Further, conventional hand dryers dry wet hands by blowing warm or high velocity air onto the hands. Also in this case, the droplets adhering to the hand are scattered around the hand dryer. Therefore, the combination of the conventional washbasin and hand dryer has a problem from the viewpoint of measures against infectious diseases.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a hand-washing device and a method of operating the hand-washing device that can wash and dry hands without scattering droplets. Another object of the present invention is to provide a hand-washing system having a plurality of hand-washing devices.

In one aspect, a bowl for receiving wash water, a drain line connected to the bowl, a suction line connected to the drain line, and a suction for sucking air from the bowl through the drain line and the suction line. A hand washing device is provided, comprising:

In one aspect, the hand-washing device further includes an auxiliary line for sending a jet of air into the bowl, and an auxiliary fan arranged in the auxiliary line, and the tip of the auxiliary line is connected to a plurality of branch lines. An auxiliary nozzle is attached to the tip of each branch line, and the auxiliary nozzle protrudes from the side wall of the bowl and is directed to a drain opening formed in the bottom wall of the bowl.
In one aspect, the hand-washing device further includes an auxiliary line for sending a jet of air into the bowl, and an auxiliary fan arranged in the auxiliary line, the tip of the auxiliary line being attached to the side wall of the bowl. It has an open annular shape, and a plurality of guide vanes are arranged at the tip of the auxiliary line.
In one aspect, the upper end portion of the bowl is formed with a plurality of guide grooves extending curvedly outward from the side wall of the bowl.

In one aspect, the bowl has a projecting member at its upper end that extends horizontally toward the inside of the bowl.
In one aspect, the hand-washing device further includes a barrier wall forming a part of the side wall of the bowl, and a heater that heats the atmosphere in the bowl via the barrier wall, wherein the heater emits near-infrared rays. and the barrier wall is made of a material that can transmit near-infrared rays.
In one aspect, the drain line is connected to the bowl through a drain opening comprising a plurality of openings formed in the bottom wall of the bowl.
In one aspect, the hand-washing device includes a head portion arranged above the bowl, an air supply line built in the head portion for sending air toward the bowl, and an air supply line arranged in the air supply line. an air fan, wherein said air fan is driven in synchronism with said suction fan, said suction fan sucking in the same amount of air as said air fan directs toward said bowl. configured to

In one aspect, in the method of operating the hand washing device, the suction device is driven to suck the air in the bowl into the drain line and the suction line, thereby drying the user's hands. is provided.
In one aspect, the washing water is supplied to the bowl to wash the user's hands, and while the user is washing the hands, the suction device is driven to remove the air in the bowl. Suck into the line and said aspiration line.

In one aspect, a hand-washing system having a plurality of hand-washing devices, wherein the plurality of hand-washing devices are the above-mentioned hand-washing devices, the suction lines of each hand-washing device are integrated into a main suction line, and the suction devices are: Instead of being placed in each hand washing device, it is placed in the main suction line.

According to the invention, washing and drying of hands can be performed in the same bowl. Therefore, the user of the hand-washing device does not have to move from the hand-washing device to another device to dry his hands. In addition, since the suction fan is driven while the hands are being dried, droplets are prevented from scattering around the outside of the bowl, that is, around the hand-washing device. As a result, it is possible to prevent droplets from scattering around the hand-washing device.

FIG. 1 is a schematic diagram of a hand-washing device according to one embodiment. 2 is a schematic enlarged view of the bowl shown in FIG. 1; FIG. FIG. 3 is a schematic diagram showing an example of a sensor capable of detecting the suction of a hand into the suction line. FIG. 4 is a schematic diagram showing a modification of the bowl. FIG. 5 is a schematic diagram showing another modification of the bowl. FIG. 6(a) is a schematic diagram showing still another modification of the bowl, and FIG. 6(b) is a top view of FIG. 6(a). FIG. 7 is a schematic diagram showing still another modification of the bowl. FIG. 8(a) is a schematic diagram showing still another modification of the bowl, and FIG. 8(b) is a cross-sectional view taken along line AA of FIG. 8(a). FIG. 9 is a schematic diagram showing a hand-washing device according to another embodiment. FIG. 10 is a schematic diagram showing a hand-washing system with a plurality of hand-washing devices.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram of a hand washing device 100 according to one embodiment. The hand-washing device 100 shown in FIG. 10, a suction line 11 connected to the drain line 10, and a suction fan 8 for sucking air from the bowl 3 via the drain line 10 and the suction line 11. A drain port 4 is formed in the bottom wall of the bowl 3 , and a drain line 10 is connected to the bottom wall of the bowl 3 through the drain port 4 . A stopper 18 is arranged at the drain port 4 to prevent accessories such as a ring and a watch from being sucked into the drain line 10.例文帳に追加As shown in FIG. 1, the hand-washing device 100 may have a detergent nozzle 31 for ejecting detergent such as liquid soap.

The drain line 10 has an S-shaped drain trap, and the suction line 11 is connected to the drain line 10 between the drain 4 and the drain trap. In addition, the drain port 4 can be completely blocked by the stopper 18 . In this case, washing water can be stored in the bowl 3.

In this embodiment, the bowl 3 is a recess formed in the top plate 1 of the main body of the hand-washing device 100 . In other words, the bowl 3 is formed integrally with (the top plate 1 of) the main body of the hand-washing device 100 . In one embodiment, the bowl 3 may be fitted into an opening formed in the top plate 1 of the body of the hand-washing device 100 .

The hand washing device 100 has a wash water sensor and a detergent sensor (not shown). The wash water sensor is, for example, arranged at or near the wash water nozzle 30 , and the detergent sensor is arranged at or near the detergent nozzle 31 . are placed. Examples of wash water sensors and detergent sensors include optical sensors, ultrasonic sensors, and the like.

When the detergent sensor detects that a hand has entered below the detergent nozzle 31, a predetermined amount of detergent is discharged from the detergent nozzle 31, and the detergent can be supplied to the hands of the user. When the wash water sensor detects that a hand has entered below the wash water nozzle 30, wash water is discharged from the wash water nozzle 30 so that the user can wash his/her hands. When the cleansing water sensor stops detecting the entry of the hand, the cleansing water nozzle 30 stops discharging the cleansing water. In one embodiment, the hand washing device 100 may have a wash water timer for automatically stopping the discharge of wash water. When the washing water timer detects that a predetermined time has elapsed since the discharge of washing water was started, the discharge of washing water is automatically stopped.

In one embodiment, the hand washing device 100 may have a rinse water button (not shown) instead of or in addition to the rinse water sensor. The cleaning water can be discharged from the cleaning water nozzle 30 by pressing the cleaning water button, and the cleaning water ejection can be stopped by pressing the cleaning water button again during the cleaning water ejection. Similarly, the hand washing device 100 may have a detergent button (not shown) instead of or in addition to the detergent sensor. A predetermined amount of detergent can be discharged from the detergent nozzle 31 by pressing the detergent button.

In this embodiment, the suction fan 8 functions as a suction device that sucks air from the bowl 3 via the suction line 11 and the drain line 10 . The suction fan 8 is held on the inner surface of the suction line 11 by a support member (not shown).

The hand-washing device 100 has a starting sensor (not shown) for driving the suction fan 8 . Examples of trigger sensors include optical sensors, ultrasonic sensors, and the like. When the user puts his or her hand near the start sensor, the suction fan 8 is driven, and the atmosphere inside the bowl 3 (that is, the air inside the bowl 3) is sucked into the suction line 11 through the drain line 10. By this suction operation, an airflow is formed from the outside of the bowl 3 toward the drain line 10 via the bowl 3 . The washing water adhering to the hands after washing is sucked into the drainage line 10 by this air flow, and the user's wet hands are dried. In one embodiment, the hand washing device 100 may have an activation button (not shown) instead of or in addition to the activation sensor. By pressing the start button, the suction fan 8 can be driven. By pressing the start button again while the suction fan 8 is being driven, the suction fan 8 can be stopped. In one embodiment, the hand-washing device 100 may have a timer for automatically stopping the operation of the suction fan 8 . When the timer detects that a predetermined time has passed since the operation of the suction fan 8 was started, the suction fan 8 is automatically stopped.

The air sucked into the drain line 10 contains washing water, and the air containing this washing water flows into the suction line 11. - 特許庁Therefore, since liquid droplets adhere to the suction fan 8, the suction fan 8 preferably has a liquid-proof property. In addition, the suction fan 8 may be arranged above the upper end of the bowl 3 (that is, the top plate 1) so that the suction fan 8 is not submerged even if the drainage flows back into the bowl 3 from the drainage line 10. preferable.

As shown in FIG. 1, the bowl 3 of this embodiment has a projecting member 5 extending horizontally toward the inside of the bowl 3 at its upper end. The protruding member 5 is formed over the entire circumference of the bowl 3 and is fitted into a stepped portion 3a formed at the upper end of the bowl 3. As shown in FIG. The upper surface of the protruding member 5 is positioned in the same plane as the upper surface of the top plate 1 . In a vertical cross-sectional view of the protruding member 5, the tip of the protruding member 5 is rounded in an arc shape. The protruding member 5 having such a configuration is directed from the tip of the protruding member 5 to the drain port 4 so that the air flowing from the outside of the bowl 3 toward the drain line 10 smoothly flows from the tip of the protruding member 5 to the drain port 4. It functions as a member that promotes separation of the airflow.

FIG. 2 is a schematic enlarged view of the bowl 3 shown in FIG. As shown in FIG. 2, the diameter of the drain port 4 is preferably determined so that a smooth airflow AF is generated from the tip of the protruding member 5 to the drain port 4 . An outer area of the airflow AF from the tip of the protruding member 5 toward the drain port 4 functions as a separation area of the airflow AF. The separation area of the airflow AF is an annular area formed according to the shape of the bowl 3 . An air vortex S is generated in the separation area, and the vortex S prevents the washing water mist and aerosol that have entered the separation area from scattering outside the bowl 3 as much as possible. Therefore, the bowl 3 having the projecting member 5 effectively prevents droplets from splashing around the hand-washing device 100 .

The hand-washing device 100 preferably has a sensor capable of detecting the suction of a hand into the suction line 10 . FIG. 3 is a schematic diagram showing an example of a sensor capable of detecting the suction of a hand into the suction line 10. As shown in FIG. In FIG. 3, illustration of the stopper 18 is omitted.

In FIG. 3, the hand-washing device 100 includes a sensor 20 arranged near the bottom wall of the bowl 3 and a sensor 22 arranged in the suction line 10 as examples of sensors capable of detecting the suction of a hand into the suction line 10. ,have. Hand-washing device 100 may have either one of these sensors 20 and 22 or may have both of these sensors 20 and 22 .

The sensor 20 is a sensor that detects that a hand has entered near the bottom wall of the bowl 3 . Any type of sensor 20 can be used as long as it can detect the entry of a hand. Examples of sensors 20 include optical sensors, ultrasonic sensors, and the like. When the sensor 20 detects the entry of a hand, the operation of the suction fan 8 is stopped.

The type of sensor 22 is also arbitrary, but the sensor 22 shown in FIG. When the hand is sucked into the suction line 10, the pressure of the suction line 10 rapidly decreases. The sensor 22, which is a pressure sensor, stops the operation of the suction fan 8 when detecting a sudden drop in pressure. For example, when the pressure detected by the sensor 22 drops below a predetermined threshold value, the operation of the suction fan 8 is stopped. In one embodiment, sensor 22 may be a noise sensor capable of detecting noise. When the hand is sucked into the suction line 10, a loud sound is generated. When the noise detected by the sensor 22, which is a noise sensor, rises above a predetermined threshold, the operation of the suction fan 8 is stopped.

If the hand-washing device 100 has both the sensor 20 and the sensor 22, when the sensor 22 detects a sudden drop in pressure or noise while the sensor 20 is detecting the entry of a hand, suction is detected. Fan 8 may be stopped.

Returning to FIG. 1 , the hand-washing device 100 may further include at least one heater 7 capable of heating the atmosphere inside the bowl 3 . A heater 7 can heat the hands in the bowl 3 . A heater 7 warms the atmosphere of the bowl 3 and wet hands to promote drying of the hands.

A heater 7 shown in FIG. 1 is arranged in a cavity formed on the outer peripheral side of the bowl 3 . In this embodiment, the heater 7 has a ring shape corresponding to the shape of the cavity. Such a configuration prevents the bowl 3 from becoming too large while maximizing the efficiency of drying the hands. In one embodiment, multiple heaters 7 may be evenly spaced around the circumference of the bowl 3 .

A portion of the side wall of the bowl 3 facing the heater 7 is configured as a barrier wall 14 that prevents washing water and detergent from adhering to the heater 7 . The barrier wall 14 can also prevent the user's hand from accidentally contacting the heater 7 . The barrier wall 14 is made of a material that can transmit near-infrared rays, and the heater 7 is a near-infrared heater (a heater that can radiate near-infrared rays). Examples of materials forming the barrier wall 14 include transparent materials such as glass and acrylic.

FIG. 4 is a schematic diagram showing a modification of the bowl 3. As shown in FIG. In the bowl 3 shown in FIG. 4, the drainage port 4 is composed of a plurality of openings 4a. Thus, the drain port 4 may be configured with a plurality of openings 4a.

FIG. 5 is a schematic diagram showing another modification of the bowl 3. As shown in FIG. The bowl 3 shown in FIG. 5 does not have the projecting member 5 described above, but instead has an inner surface having a bellmouth-like shape. The inner surface of the bellmouth-like shape is a curved surface that smoothly extends from the top end to the bottom end of the bowl 3 and over the entire circumference of the bowl 3 . When the inner surface of the bowl 3 has a bellmouth-like shape, the flow of air sucked into the bowl 3 is not disturbed by the inner surface of the bowl 3, so that a smooth airflow extending from the upper end of the bowl 3 to the drain port 4 can be formed. can. As a result, splashing of droplets from the bowl 3 is effectively prevented.

FIG. 6(a) is a schematic diagram showing still another modification of the bowl 3, and FIG. 6(b) is a top view of FIG. 6(a). The bowl 3 shown in FIGS. 6(a) and 6(b) does not have the projecting member 5 described above. The bowl 3 is formed with a plurality of guide grooves 35 curvedly extending outward from the side wall of the bowl 3 at its upper end. The plurality of guide grooves 35 have the same shape and are curved in the same direction. Furthermore, a plurality of guide grooves 35 are arranged at regular intervals along the outer circumference of the bowl 3 .

When the suction fan 8 is driven, the guide groove 35 forms a swirling flow in the bowl 3 that continues from the upper end of the bowl 3 to the drain port 4 . This swirling flow effectively prevents droplets from scattering from the bowl 3 .

FIG. 7 is a schematic diagram showing still another modification of the bowl 3. As shown in FIG. A hand-washing device 100 having a bowl 3 shown in FIG. 7 includes an auxiliary line 32 for sending a jet of air into the bowl 3 and an auxiliary fan (auxiliary device) 36 arranged on the auxiliary line 32 . The auxiliary fan 36 is held on the inner surface of the auxiliary line 32 by a support member (not shown). The auxiliary line 32 branches into a plurality of branch lines at its tip, and an auxiliary nozzle 32a is attached to the tip of each branch line. These auxiliary nozzles 32 a protrude from the side wall of the bowl 3 . A plurality of auxiliary nozzles 32a are arranged at regular intervals along the side wall of the bowl 3, and the tips of the auxiliary nozzles 32a are directed toward the exhaust port 4. As shown in FIG.

In this embodiment, the auxiliary fan 36 is driven at the same time the suction fan 8 is driven. By driving the auxiliary fan 36 , an air jet flow JF is formed in the bowl 3 from the auxiliary nozzle 32 a toward the exhaust port 4 . The jet flow JF assists the airflow AF from the tip of the protruding member 5 toward the drain port 4 , so that droplets are more effectively prevented from scattering from the bowl 3 .

FIG. 8(a) is a schematic diagram showing still another modification of the bowl, and FIG. 8(b) is a cross-sectional view taken along line AA of FIG. 8(a). A hand washing device 100 having a bowl 3 shown in FIGS. 8(a) and 8(b) includes an auxiliary line 32 for sending a jet of air into the bowl 3 and an auxiliary fan (auxiliary device) 36 arranged in the auxiliary line 32. And prepare. The tip of the auxiliary line 32 has a ring shape that opens to the side wall of the bowl 3 . A plurality of guide vanes 37 are arranged at the tip. The plurality of guide vanes 37 have the same shape, and are arranged at regular intervals along the openings forming the distal ends of the auxiliary lines 32 (that is, along the side walls of the bowl 3).

When the auxiliary fan 36 is driven, a jet of air is discharged into the bowl 3 through the opening forming the tip of the auxiliary line 32 . The plurality of guide vanes 37 convert the jet of air discharged into the bowl 3 into a swirl flow along the sidewall of the bowl 3 . When the auxiliary fan 36 is driven, the suction fan 8 is also driven. The swirling flow in the bowl 3 formed by the plurality of guide vanes 37 is sucked into the drain line 10 and the suction line 11 through the drain port 4 by driving the suction fan 8 . Therefore, by driving the suction fan 8 and the auxiliary fan 36, a swirl flow of air is formed in the bowl 3 from the tip of the auxiliary line 32 (that is, the opening where the guide vane 37 is arranged) to the drain port 4. be done. As a result, splashing of droplets from the bowl 3 is effectively prevented.

Next, a method of operating the hand washing device 100 will be described. The user first puts his/her hand into the bowl 3 and supplies detergent to the hand from the detergent nozzle 31 using a detergent sensor (or detergent button) (not shown). The user cleans his hands using the supplied detergent. Next, the user uses a wash water sensor (or wash water button) (not shown) to discharge wash water from the wash water nozzle 30, and wash away the detergent adhering to the hands in the bowl 3 together with the dirt. .

Next, the user drives the suction fan 8 to generate an airflow in the bowl 3 and dry his hands in the bowl 3 with this airflow. When the hand-washing device 100 has an auxiliary fan 36 in addition to the suction fan 8, the auxiliary fan 36 is also driven in synchronization with the driving of the suction fan 8. - 特許庁When the hand-washing device 100 has the heater 7 , the operation of the heater 7 is started in synchronization with the operation of the suction fan 8 . Since the heater 7 accelerates the drying of the hands, the user can finish drying the hands in a shorter time.

Thus, according to the hand-washing device 100 according to this embodiment, the user can wash and dry their hands in the same bowl 3 . Therefore, the user of the hand washing device 100 does not need to move from the hand washing device 100 to another device (eg, hand dryer) to dry his hands. Furthermore, during drying of the hands, that is, while the suction fan 8 (and the auxiliary fan 36) is being driven, the configuration of the above-described embodiment prevents droplets from scattering outside the bowl 3, that is, around the hand-washing device 100. prevented. As a result, droplets can be prevented from scattering around the hand-washing device 100 .

In one embodiment, the suction fan 8 may be driven in synchronization with the discharge of cleansing water from the cleansing water nozzles 30 when the user washes their hands in the bowl 3 . When the hand-washing device 100 has an auxiliary fan 36 in addition to the suction fan 8, the auxiliary fan 36 is also driven in synchronization with the driving of the suction fan 8. - 特許庁By driving the suction fan 8 (and the auxiliary fan 36 ), washing water is effectively prevented from splashing around the outside of the bowl 3 , that is, the hand-washing device 100 .

FIG. 9 is a schematic diagram showing a hand-washing device according to another embodiment. Since the configuration of this embodiment, which is not particularly described, is the same as that of the above-described embodiment, redundant description thereof will be omitted.

The hand-washing device 100 shown in FIG. 9 includes a head portion 45 arranged above the bowl 3 , and the washing water nozzle 30 and the detergent nozzle 31 described above are built in the head portion 45 . The hand washing device 100 further has an air supply line 40 for sending air from above the bowl 3 toward the bowl 3 and an air supply fan 41 arranged in the air supply line 40 . The air supply line 40 and the air supply fan 41 are built in the head section 45 . The air supply fan 41 is held on the inner surface of the air supply line 40 by a support member (not shown).

In this embodiment, the suction fan 8 is driven synchronously with the air supply fan 41 and configured to suck the same amount of air as the air supply fan 41 sends toward the bowl 3 . When drying the hands, the air supply fan 41 and the suction fan 8 are driven at the same time, and the suction fan 8 sucks the air sent toward the bowl 3 by the air supply fan 41 through the drain line 10 and the suction line 11. configured as With such a configuration, it is possible to form an airflow that continues from the head 45 through the bowl 3 to the drain port 4 . This airflow allows the user to dry their hands.

The outlet 40 a of the air supply line 40 is preferably located directly above the drain port 4 . Furthermore, the outlet 40a of the air supply line 40 preferably has an equivalent diameter to the diameter of the outlet 4. As shown in FIG. The bowl 3 shown in FIG. 9 is the bowl 3 having the bellmouth-like inner surface described with reference to FIG. 5, but having the projecting member 5 described with reference to FIG. good too. Furthermore, the hand-washing device 100 shown in FIG. 9 may have a heater 7 and a barrier wall 14 . The heater 7 can promote drying of the hands.

FIG. 10 is a schematic diagram showing a hand-washing system with a plurality of hand-washing devices. The hand-washing system shown in FIG. 10 has a plurality of (three in FIG. 10) hand-washing devices 100, and each hand-washing device 100 is the hand-washing device 100 according to any of the embodiments described above. The number of hand-washing devices 100 arranged in the hand-washing system is arbitrary as long as it is two or more.

The hand-washing system shown in FIG. 10 includes a main suction line 110 where the suction lines 11 of the hand-washing devices 100 are aggregated. An on-off valve 115 is arranged in each suction line 11 .

When each hand washing device 100 has the above-described auxiliary line 32, as shown by the dotted line in FIG. It is arranged in the auxiliary line 130 . An on-off valve 135 is arranged in each auxiliary line 32 . When each hand washing device 100 has the air supply line 40 described above, as shown by the two-dot chain line in FIG. The air fan 41 is arranged in the main air supply line 140 . An on-off valve 145 is arranged in each air supply line 40 .

In such a hand-washing system, when drying hands in any of the hand-washing devices 100, the operation of the suction fan 8 arranged in the main suction line 110 is started, and the hand-drying device 100 is started. The on-off valve 115 arranged in the suction line 11 is opened. By these operations, the atmosphere in the bowl 3 of the hand-washing device 100 whose hands have started to dry flows through the suction line 11 into the main suction line 110 . When a plurality of hand washing devices 100 dry hands at the same time, the on-off valve 115 arranged in the suction line 11 of the hand washing device 100 whose hand drying has started is opened, and the hand washing whose hands have started drying is opened. The rotation speed of the suction fan 8 is adjusted (increased) according to the number of devices 100 .

In one embodiment, when cleansing water is discharged from the cleansing water nozzle 30 in any of the hand-washing devices 100, the operation of the suction fan 8 arranged in the main suction line 110 is started, and the hand-washing device in which the cleansing water is discharged is started. An on-off valve 115 located in the aspiration line 11 of the device 100 may be opened. By these operations, the atmosphere in the bowl 3 of the hand-washing device 100 that has started to be used flows through the suction line 11 into the main suction line 110 . When a plurality of hand washing devices 100 are used at the same time, the on-off valve 115 arranged in the suction line 11 of the hand washing device 100 used is opened, and the suction fan 8 is turned on according to the number of hand washing devices 100 used. The number of revolutions is adjusted (increased).

When each hand-washing device 100 has the above-described auxiliary line 32, when drying hands in one of the hand-washing devices 100, the auxiliary fan 36 arranged in the main auxiliary line 130 is operated simultaneously with the operation of the suction fan 8. At the same time, the on-off valve 135 arranged in the auxiliary line 32 of the hand-washing device 100 whose hand drying has started is opened. By these operations, a jet of air is blown into the bowl 3 of the hand-washing device 100 where drying of the hands has started. When a plurality of hand washing devices 100 dry hands at the same time, the on-off valve 135 arranged in the auxiliary line 32 of the hand washing device 100 whose hand drying has started is opened, and the hand washing whose hands have started drying is opened. The rotational speed of the auxiliary fan 36 is adjusted (increased) according to the number of devices 100 .

In one embodiment, when cleansing water is discharged from the cleansing water nozzles 30 of any of the hand-washing devices 100, the suction fan 8 and the auxiliary fan 36 are started to operate, and the hand-washing device 100 to which cleansing water has been discharged is sucked. The on-off valve 115 arranged in the line 11 and the on-off valve 135 arranged in the auxiliary line 32 may be opened. Also in this case, the number of rotations of the suction fan 8 and the auxiliary fan 36 is adjusted (increased) according to the number of hand washing devices 100 used.

Similarly, in the case where each hand washing device 100 has the air supply line 40 described above, when drying hands with one of the hand washing devices 100, the air supplied to the main air supply line 140 is operated simultaneously with the operation of the suction fan 8. As the operation of the fan 41 is started, the on-off valve 145 arranged in the air supply line 40 of the hand washing device 100 whose hands have started to be dried is opened. In one embodiment, when cleansing water is discharged from the cleansing water nozzle 30 in any of the hand washing devices 100, the operation of the suction fan 8 and the air supply fan 41 is started, and the hand washing device 100 to which the cleansing water has been discharged is operated. The opening/closing valve 115 arranged in the suction line 11 and the opening/closing valve 145 arranged in the air supply line 40 may be opened. In either case, the number of rotations of the suction fan 8 and the air supply fan 41 is adjusted (increased) according to the number of hand washing devices 100 used.

The above-described embodiments are described for the purpose of enabling a person having ordinary knowledge in the technical field to which the present invention belongs to implement the present invention. Various modifications of the above embodiments can be made by those skilled in the art, and the technical idea of the present invention can be applied to other embodiments. Accordingly, the present invention is not limited to the described embodiments, but is to be construed in its broadest scope in accordance with the technical spirit defined by the claims.

1 top plate 3 bowl 4 drainage port 5 projecting member 7 heater 8 suction fan (suction device)
10 drainage line 11 suction line 14 barrier wall 20, 22 sensor 30 washing water nozzle 31 detergent nozzle 32 auxiliary line 35 guide groove 36 auxiliary fan 37 guide vane 40 air supply line 41 air supply fan 100 hand wash device 110 main suction line 115 on-off valve 130 main auxiliary line 135 on-off valve 140 main air supply line 145 on-off valve

Claims (11)

a bowl for receiving wash water;
a drain line connected to the bowl;
a suction line connected to the drainage line;
a suction device for sucking air from the bowl through the drain line and the suction line. an auxiliary line for sending a jet of air into the bowl;
and an auxiliary fan arranged on the auxiliary line,
The tip of the auxiliary line branches into a plurality of branch lines,
An auxiliary nozzle is attached to the tip of each branch line,
2. The hand-washing device according to claim 1, wherein the auxiliary nozzle protrudes from the side wall of the bowl and is directed toward a drain formed in the bottom wall of the bowl. an auxiliary line for sending a jet of air into the bowl;
and an auxiliary fan arranged on the auxiliary line,
The tip of the auxiliary line has a ring shape opening to the side wall of the bowl,
The hand-washing device according to claim 1, wherein a plurality of guide vanes are arranged at the tip of said auxiliary line. 2. The hand-washing device according to claim 1, wherein the upper end of the bowl is formed with a plurality of guide grooves extending outward from the sidewall of the bowl. 4. The hand-washing device according to any one of claims 1 to 3, wherein the bowl has a projecting member extending horizontally toward the inside of the bowl at its upper end. a barrier wall forming part of the side wall of the bowl;
a heater that heats the atmosphere in the bowl through the barrier wall,
The heater is a heater that emits near-infrared rays,
The hand-washing device according to any one of claims 1 to 5, wherein the barrier wall is made of a material permeable to near-infrared rays. 7. The hand-washing device according to any one of claims 1 to 6, wherein the drain line is connected to the bowl through a drain port composed of a plurality of openings formed in the bottom wall of the bowl. a head positioned above the bowl;
an air supply line that is built in the head portion and sends air toward the bowl;
and an air supply fan arranged in the air supply line,
The air supply fan is driven in synchronization with the suction fan,
The hand-washing device according to claim 1, wherein the suction fan is configured to draw in the same amount of air as the air delivery fan directs toward the bowl. A method for operating a hand washing device according to any one of claims 1 to 8,
A method of operating a hand-washing device, wherein the suction device is driven to suck the air in the bowl into the drain line and the suction line, thereby drying the user's hands. supplying the wash water to the bowl to wash the hands of the user;
10. The method of operating a hand washing apparatus according to claim 9, wherein the suction device is driven to suck air in the bowl into the drain line and the suction line while the user is washing his/her hands. A hand washing system having a plurality of hand washing devices,
The plurality of hand washing devices are the hand washing devices according to any one of claims 1 to 8,
the suction lines of each hand washing device are merged into a main suction line,
A hand washing system wherein the suction device is located in the main suction line instead of being located in each hand washing device.

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