JP2004357820A - Hand dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand dryer which prevents an airflow jetting from a nozzle from jetting outside a hand insertion part and prevents dirt buildup and the growth of bacteria inside a drainage. <P>SOLUTION: The hand dryer is equipped with a high pressure airflow generating device for generating the high-pressure airflow, a nozzle 4 for jetting the high-pressure airflow generated by the high-pressure airflow generating device, the hand insertion part 2 having a drain outlet 6 for draining water blown from the hands with the high-pressure airflow jetted from the nozzle 4, and a drain vessel 8 for accumulating the discharged water. The hand dryer is equipped with an air collecting opening (the drain outlet 6) which communicates with the hand insertion part 2 and collects the high-pressure airflow jetted from the nozzle 4, an air exhaust 13 which is provided on either side of a main body of the hand dryer and escapes the high-pressure airflow jetted from the nozzle 4, and an air passage (the drainage 7) for connecting the air collecting opening with the air exhaust. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hand drying device, and more particularly to a hand drying device that prevents water blown from a user's hand from splashing and prevents generation of dirt and germs in a drainage passage and the like.
[0002]
[Prior art]
In the conventional hand drying device, the airflow blown out from the nozzle is swirled in a loop in the hand insertion portion, thereby preventing water droplets blown from the hand from scattering to the outside of the hand insertion portion. (For example, see Patent Document 1).
[0003]
In addition, in the conventional hand drying device, a water container is provided at a lower portion of the hand insertion portion to prevent accumulation of dirt in the drainage channel and propagation of various bacteria, and a water container is provided at a lower portion of the hand insertion portion so that water droplets can be stored in the water container. (For example, see Patent Document 2).
[0004]
[Patent Document 1]
JP-A-11-178742 (FIGS. 3 and 4)
[Patent Document 2]
JP-A-2002-209791 (FIG. 1)
[0005]
[Problems to be solved by the invention]
In a conventional hand drying device (see, for example, Patent Document 1), even if the airflow blown out of the nozzle is swirled in a loop in the hand insertion portion, there is no place for the airflow blown out of the nozzle to escape, so that the airflow is not a small amount. There is a problem that the water blows out to the outside of the part and water drops splash to the user. In addition, there is also a problem that the airflow blows out of the hand insertion portion and hits the user, thereby giving the user discomfort.
[0006]
Further, in a conventional hand drying device (for example, see Patent Document 2), a water container is provided at the lower part of the hand insertion portion without providing a drainage channel in order to suppress accumulation of dirt in the drainage channel and propagation of various bacteria. However, there is a problem that the water container is exposed to the outside and accumulated sewage can be seen, and the odor generated from the sewage gives a user discomfort. Furthermore, when such a structure is adopted, there is a problem that it is difficult to arrange a high-pressure airflow generator and an electric circuit below the hand insertion portion.
[0007]
An object of the present invention is to provide a hand drying device that does not cause airflow blown out from a nozzle to blow out to the outside of a hand insertion portion, does not accumulate dirt inside a drainage channel, and can suppress the growth of various bacteria. And
[0008]
[Means for Solving the Problems]
A hand dryer according to the present invention includes a high-pressure air flow generator that generates a high-pressure air flow, a nozzle that jets the high-pressure air flow generated by the high-pressure air flow device, and a high-pressure air flow that is jetted from the nozzle. A hand insertion section having a drain port for draining water blown off from the hand, and a drain container for storing drainage, communicating with the hand insertion section, the high-pressure air flow ejected from the nozzle An air recovery port for recovery, an air discharge port provided on any surface of the hand drying device main body to allow the high-pressure air flow ejected from the nozzle to escape, and an air passage connecting the air recovery port and the air discharge port It is provided with.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a longitudinal sectional view of a hand drying device according to Embodiment 1 of the present invention. In the first embodiment, a hand drying device installed on a wall surface will be described. The hand drying device has a front surface, an upper surface, and a lower surface that are covered by a box body 1 that is a main body of the hand drying device. Is formed in a concave shape inside the hand dryer.
Inside the box 1 is provided a blower 3 which is a high-pressure airflow generator for generating a high-pressure airflow, and a high-pressure airflow generated by the blower 3 from a nozzle 4 provided on the wall surface of the hand insertion portion 2. To spout out. In addition, two nozzles 4 are provided for simultaneously blowing air to both the back and palm of the hand so that water droplets attached to the hand can be removed from the front and back surfaces of the hand without rubbing the hand inserted into the hand insertion portion 2. Have been. Note that only one nozzle 4 may be provided, or two or more nozzles 4 may be provided.
[0010]
In the lower part of the inside of the hand insertion part 2, a shielding part 5 for preventing the user from seeing the inside of the hand drying device is provided so as not to block the entire cross section of the hand insertion part 2. The part not covered by the shielding part 5 is the drain port 6. In addition, the shielding part 5 does not need to be provided, and in that case, the entire cross section of the lower part of the hand insertion part 2 becomes the drain port 6. A drainage channel 7 is provided below the drainage port 6 so as to communicate with the hand insertion portion 2, and the drainage channel 7 is connected to the drain container 8 via an opening 8 a of the drain container 8. In addition, a portion communicating with the hand insertion portion 2 and the drainage channel 7 is configured such that its cross-sectional area is continuously reduced, and a portion communicating with the opening 8a in the drainage channel 7 is substantially horizontal. The drain container 8 is provided so as to be detachable from the box 1, and the opening 8a of the drain container 8 is opened substantially upward.
[0011]
An intake port 9 for sucking air to be sent to the blower 3 is provided on the lower surface of the box 1, and the air filtered by passing through the filter 10 is sent to the blower 3 through the intake duct 11. It has become.
The high-pressure airflow generated by the blower 3 flows upward through the exhaust duct 12 and is ejected from the nozzle 4 provided in the hand insertion portion 2.
[0012]
The inner wall surface of the drainage channel 7 is provided with a water-repellent coating such as a silicon-based or fluorine-based coating to reduce the accumulation of dirt on the inner wall surface of the drainage channel 8 and the generation of various bacteria. . An antibacterial agent can be further applied on the surface of the water-repellent coating, or an antibacterial agent can be added to the water-repellent coating to prevent the occurrence of various bacteria.
In addition, by removing the shielding part 5 provided inside the hand insertion part 2, the inner wall surface of the drainage channel 7 can be easily cleaned.
[0013]
The drain port 6 also has a function as an air recovery port for recovering the high-pressure air flow ejected from the nozzle 4, and the drain port 6 and the air recovery port are also used. The drain passage 7 is connected to the ventilation passage 14 which ends at the opening 8a and is connected to the air outlet 13 beyond the opening 8a because water drops fall into the drain container 8 from the opening 8a of the drain container 8. I have. In addition, since the moist air also passes through the inner wall surface of the ventilation path 14, a water repellent coating such as a silicon-based or fluorine-based coating is applied, so that dirt is deposited on the inner wall surface of the ventilation path 14 and germs are generated. Is to be reduced.
[0014]
In the hand drying device according to the first embodiment, when a wet hand after washing is inserted into the hand insertion portion 2 up to the vicinity of the wrist, a sensor (not shown) provided in the hand insertion portion 2 detects the hand and detects a blower. 3 operates. When the blower 3 operates, air flows in through the filter 10 from the intake port 9 on the lower surface of the box 1, enters the blower 3 through the intake duct 11, and is pressurized.
[0015]
The air that has passed through the blower 3 becomes a high-pressure air flow, passes through the exhaust duct 12, and is ejected from the nozzle 4. The high-speed high-pressure air flow ejected from the nozzle 4 hits the hand inserted into the hand insertion portion 2 and blows off water adhering to the surface of the hand as water droplets, and a part of the water is blown out of the opening of the hand insertion portion 2. Most of the air flows out of the portion 2a to the outside, but most of the air is discharged from the air outlet 13 through the ventilation passage 14 from the drain 6 that functions as an air recovery port. At this time, the high-pressure air flow passes through the drain passage 7, and the drain passage 7 also functions as an air passage connecting the air recovery port and the air discharge port 13.
Since the air outlet 13 is provided on the lower surface of the box 1, the air blown out from the air outlet 13 is not blown to the user, and there is no discomfort to the user.
[0016]
When the user inserts and removes the hand with the hand insertion section 2, the moisture attached to the entire hand is removed and the hand is dried. When the user removes his / her hand from the hand insertion unit 2 after the drying is completed, the sensor does not detect the hand and the blower 3 stops.
[0017]
The water droplets removed from the wet hand hit the wall surface of the hand insertion portion 2, and the water droplets flow along the wall surface of the hand insertion portion 2, enter the drain port 6 below the hand insertion portion 2, and pass through the drain passage 7. Collected in the drain container 8. At this time, the drainage channel 7 also functions as an air channel connecting the air recovery port and the air exhaust port 13, and since the drainage channel 7 is also used as an air channel, water droplets flowing through the drainage channel 7 are pushed by air, The liquid is collected in the drain container 8 from the opening 8a having a sufficient size. The opening 8a of the drain container 8 is opened substantially upward so that water droplets can be smoothly collected inside the drain container 8.
[0018]
In the first embodiment, the high-speed high-pressure air flow ejected from the nozzle 4 blows off water droplets attached to the surface of the hand, and a part of the high-pressure air flow flows out of the hand insertion portion 2, but most of the air flow is air. Since the air is discharged from the air outlet 13 through the drainage port 7 functioning as a recovery port and the drainage path 7 functioning as an air path and the ventilation path 14, the air flowing toward the user from the opening 2 a of the hand insertion portion 2 is removed. The outflow can be reduced, and thus the scattering of water droplets can also be reduced.
[0019]
Also, in the conventional hand drying device, since water droplets blown off from wet hands contain dirt, if a portion to which water droplets adhere is left without being cleaned, an odor is generated from that portion. In the first embodiment, the air flows into the drainage channel 7 and the inner wall surface of the drainage channel 7 is subjected to the water-repellent treatment, so that water droplets hardly remain and the inside of the drainage channel 7 dries quickly. . For this reason, accumulation of dirt and propagation of various bacteria can be reduced, no odor is generated, and no discomfort is given to the user.
[0020]
Further, in the first embodiment, the opening 8a of the drain container 8 is opened substantially upward, and the portion of the drain passage 7 communicating with the opening 8a of the drain container 8 is substantially horizontal. Does not flow into the drain container 8, passes through the ventilation path 14, is discharged from the air outlet 13 to the outside of the box 1, and only water droplets are collected into the drain container 8 from the opening 8 a. Further, with such a configuration, since air does not flow into the drain container 8 from the opening 8a, it is possible to make the drain water accumulated in the drain container 8 ruffled and prevent the drain water from spilling out of the drain container 8. it can.
[0021]
Embodiment 2. FIG.
FIG. 2 is a longitudinal sectional view of the hand drying device according to the second embodiment of the present invention. In the hand drying apparatus according to the second embodiment, the drainage port 6 and the air recovery port 6a are separately provided in the hand insertion section 2. Further, a drain path 7 and an air path 7a connecting the air recovery port 6a and the air discharge port 13 are separately provided. In addition, there is no shielding part 5 and ventilation path 14, and a water-repellent coating is applied to the inner wall surface of the drain path 7 and the inner wall surface of the ventilation path 7a. Also, the portion of the drainage channel 7 communicating with the opening 8a of the drain container 8 is not horizontal. The other parts are the same as those of the hand drying apparatus according to the first embodiment shown in FIG. 1, and are denoted by the same reference numerals and description thereof will be omitted.
[0022]
In the second embodiment, the high-speed high-pressure air flow ejected from the nozzle 4 blows off water droplets attached to the surface of the hand, and a part of the high-pressure air flow flows out of the hand insertion portion 2 or flows into the drain passage 7. Although most of the air flows through the air recovery port 6a, the air is discharged from the air discharge port 13 through the air path 7a, and thus the outflow of air from the opening 2a of the hand insertion section 2 toward the user is reduced. The scattering of water droplets can also be reduced.
[0023]
Also, in the conventional hand drying device, since water droplets blown off from wet hands contain dirt, if a portion to which water droplets adhere is left without being cleaned, an odor is generated from that portion. In the second embodiment, since the inner wall surface of the drain passage 7 and the inner wall surface of the air passage 7a are subjected to the water-repellent treatment, water droplets hardly remain and the inside of the drain passage 7 and the inside of the air passage 7a dry quickly. It will be. For this reason, accumulation of dirt and propagation of various bacteria can be reduced, no odor is generated, and no discomfort is given to the user.
[0024]
Embodiment 3 FIG.
FIG. 3 is a longitudinal sectional view of a hand drying device according to Embodiment 3 of the present invention. In the hand drying device according to the third embodiment, the opening 2a of the hand insertion portion 2 is opened on the front side and the side surface of the box 1, and is formed as an open sink-shaped recess. In addition, a water receiving portion 15 forming the lower surface of the hand insertion portion 2 and a barrier 16 at the inner edge and the side edge of the opening 2a of the hand insertion portion 2 are provided. In addition, water droplets are prevented from scattering forward. The water receiving portion 15 is open at the back side of the hand insertion portion 2 and serves as a drain port 6. A drain 7 for guiding water droplets to the opening 8 a of the drain container 8 is formed below the drain 6.
The blower 3 for generating a high-pressure air flow is provided in an upper portion of the inside of the box 1, and the high-pressure air flow is heated by the heater 17 to be blown out from the nozzle 4.
In FIG. 3, the same components as those in FIG. 1 are denoted by the same reference numerals.
[0025]
A drain container 8 for collecting water droplets entering through the drain port 6 and passing through the drain channel 7 is detachably provided below the water receiving portion 15.
The inner surface of the hand insertion portion 2 and the barrier 16 are coated with a water-repellent coating such as a silicon-based or fluorine-based material to prevent dirt from accumulating on the inner surface of the hand insertion portion 2 and the growth of various bacteria. It is designed to reduce it.
[0026]
The drain port 6 also has a function as an air recovery port for recovering the high-pressure air flow ejected from the nozzle 4, and the drain port 6 and the air recovery port are also used. The drain passage 7 is connected to the ventilation passage 14 which ends at the opening 8a and is connected to the air outlet 13 beyond the opening 8a because water drops fall into the drain container 8 from the opening 8a of the drain container 8. I have. In addition, since the moist air also passes through the inner wall surface of the ventilation path 14, a water repellent coating such as a silicon-based or fluorine-based coating is applied, so that dirt is deposited on the inner wall surface of the ventilation path 14 and germs are generated. Is to be reduced.
[0027]
The inner wall surface of the drainage channel 7 is also provided with a water-repellent coating such as a silicon-based or fluorine-based coating to reduce the accumulation of dirt on the inner wall surface of the drainage channel 7 and the occurrence of various bacteria. I have.
[0028]
The blower 3, which is a high-pressure airflow generating device, includes a motor such as a DC brushless motor, a commutator motor, or an induction motor, a driving circuit for driving the motor, and a turbo fan rotated by the motor. In the third embodiment, the blower 3 is mounted just above the hand insertion section 2 inside the box 1 with the suction side facing the back side of the hand dryer.
The intake side of the blower 3 faces an intake duct 11 provided in the vertical direction on the back side of the box 1, and the air sucked through the filter 10 from the intake port 9 at the lower end of the intake duct 11 is blown. 3 is sent. The filter 10 is detachably attached.
[0029]
The nozzle 4 is attached to the upper portion of the hand insertion portion 2 near the opening 2a with the ejection port facing downward, and blows a high-speed high-pressure air flow to the hand inserted into the hand insertion portion 2 to rub the hand. Water drops on the hand are removed from the surface of the hand without matching. Since the high-pressure air flow is heated by the heater 17, the surface of the hand dries quickly.
[0030]
The high-speed high-pressure air flow ejected from the nozzle 4 hits the hand inserted into the hand insertion portion 2 and blows off water adhering to the surface of the hand as water droplets, and a part of the water is blown out of the opening of the hand insertion portion 2. Most of the air flows out of the portion 2a to the outside, but most of the air is discharged from the air outlet 13 through the ventilation passage 14 from the drain 6 that functions as an air recovery port. At this time, the high-pressure air flow passes through the drain passage 7, and the drain passage 7 also functions as an air passage connecting the air recovery port and the air discharge port 13.
Note that the air outlet 13 and the air inlet 9 are arranged far enough apart so that the humid air blown out from the air outlet 13 is not sucked into the air inlet 9 again. It is designed to prevent rust. Further, since the air outlet 13 is provided on the lower surface of the box 1, the air blown out from the air outlet 13 does not reach the user, and there is no discomfort to the user.
[0031]
In the hand drying device according to the third embodiment, when the wet hand after washing is inserted into the hand insertion portion 2 up to the vicinity of the wrist, the sensor 18 provided above the hand insertion portion 2 detects the hand, and the control circuit The blower 3 is operated by the above processing. When the blower 3 operates, air flows in through the filter 10 from the intake port 9 on the lower surface of the box 1, enters the blower 3 through the intake duct 11, is pressurized, and the high-pressure air flow is ejected from the nozzle 4. . The high-speed, high-pressure airflow spouted from the nozzle 4 hits the hand inserted into the hand insertion portion 2 and blows off water adhering to the surface of the hand as water droplets. By removing and inserting, the moisture adhering to the entire hand is removed and the hand is dried. When the user removes his / her hand from the hand insertion section 2 after the drying is completed, the sensor 18 does not detect the hand and the blower 3 stops.
[0032]
The water droplets blown from the hand flow down the upper surface of the water receiving portion 15 toward the drain port 6, enter the drain port 6, and are collected in the drain container 8 through the drain channel 7. At this time, the drainage channel 7 also functions as an air channel connecting the air recovery port and the air exhaust port 13, and since the drainage channel 7 is also used as an air channel, water droplets flowing through the drainage channel 7 are pushed by air, The liquid is collected in the drain container 8 from the opening 8a having a sufficient size. The opening 8a of the drain container 8 is opened substantially upward so that water droplets can be smoothly collected inside the drain container 8, and the portion of the drainage channel 7 communicating with the opening 8a is substantially horizontal. It is supposed to be.
[0033]
In the third embodiment, the high-speed high-pressure air flow ejected from the nozzle 4 blows off water droplets attached to the surface of the hand, and a part of the high-pressure air flow flows out of the hand insertion portion 2, but most of the air flow is air. Since the air is discharged from the air outlet 13 through the drainage port 7 functioning as a recovery port and the drainage path 7 functioning as an air path and the ventilation path 14, the air flowing toward the user from the opening 2 a of the hand insertion portion 2 is removed. The outflow can be reduced, and thus the scattering of water droplets can also be reduced.
[0034]
Also, in the conventional hand drying device, since water droplets blown off from wet hands contain dirt, if a portion to which water droplets adhere is left without being cleaned, an odor is generated from that portion. In the third embodiment, since the air flows into the drainage channel 7 and the inner wall surface of the drainage channel 7 is subjected to the water-repellent treatment, water droplets hardly remain and the inside of the drainage channel 7 dries quickly. . For this reason, accumulation of dirt and propagation of various bacteria can be reduced, no odor is generated, and no discomfort is given to the user.
[0035]
Further, in the third embodiment, the opening 8a of the drain container 8 is opened substantially upward, and the portion of the drain passage 7 communicating with the opening 8a of the drain container 8 is substantially horizontal. Does not flow into the drain container 8, passes through the ventilation path 14, is discharged from the air outlet 13 to the outside of the box 1, and only water droplets are collected into the drain container 8 from the opening 8 a. Further, with such a configuration, since air does not flow into the inside of the drain container 8 from the opening 8a, it is possible to make the drain water accumulated inside the drain container 8 rippling and prevent the drain water from spilling out of the drain container 8. it can.
[0036]
In the third embodiment, the drainage channel 7 and the ventilation channel 14 are not formed by dedicated components, but are formed by the water receiving portion 15, the box 1, and the drain container 8, so that cost can be reduced. . Further, by removing the drain container 8, the inner walls of the drainage channel 7 and the ventilation channel 14 can be easily cleaned.
[0037]
【The invention's effect】
According to the present invention, an air recovery port that communicates with the hand insertion portion and recovers the high-pressure airflow ejected from the nozzle, and the high-pressure airflow that is provided on any surface of the hand drying device main body and is ejected from the nozzle. Air outlet to allow air to escape, and an air passage connecting the air recovery port and the air outlet, reducing the outflow of air from the hand insertion section to the user, thereby reducing the splash of water droplets be able to.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a hand drying device according to a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a hand drying device according to a second embodiment of the present invention.
FIG. 3 is a longitudinal sectional view of a hand dryer according to Embodiment 3 of the present invention.
[Explanation of symbols]
1 box body, 2 hand insertion section, 3 blower, 4 nozzle, 5 shielding section, 6 drain port, 7 drain channel, 8 drain container, 9 intake port, 10 filter, 11 intake duct, 12 exhaust duct, 13 air exhaust port , 14 ventilation path, 15 water receiver, 16 barrier, 17 heater, 18 sensor.

Claims (6)

A high-pressure air flow generator for generating a high-pressure air flow, a nozzle for jetting the high-pressure air flow generated by the high-pressure air flow device, and draining water blown from a hand by the high-pressure air flow jetted from the nozzle. A hand insertion unit having a drain port to perform, and a hand drying device including a drain container that stores the waste water,
An air recovery port, which communicates with the hand insertion portion and collects the high-pressure air flow ejected from the nozzle, is provided on any surface of the hand dryer main body, and the high-pressure air flow ejected from the nozzle is provided. A hand dryer comprising: an air outlet for allowing air to escape; and an air passage connecting the air recovery port and the air outlet. The drain port functions as the air recovery port,
2. The hand dryer according to claim 1, wherein a drainage channel connecting the drainage port and the drain container functions as an airflow path connecting the air recovery port and the air exhaustion port. The hand dryer according to claim 2, wherein an opening of the drain container is opened substantially upward, and a portion of the drainage passage communicating with the opening of the drain container is substantially horizontal. The hand dryer according to claim 1, wherein a water-repellent treatment is applied to a surface of a drainage channel connecting the drainage port and the drain container. The hand dryer according to claim 1 or 4, wherein a water repellent treatment is applied to a surface of an air passage connecting the air recovery port and the air discharge port. The hand dryer according to claim 2 or 3, wherein a water-repellent treatment is applied to a surface of the drainage channel.

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