JP2010279436A - Hand dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe and sanitary hand dryer by reducing the suction noise of a high pressure air flow generator when drying hands, making it possible to install it even when an installation place is near a floor or a washstand or on a stand, and making it difficult to suck dust, droplets, or the like. <P>SOLUTION: The hand dryer includes a hand insertion part 4 constituted of a recessed processing space in such a size that hands can be taken in and out and the high pressure air flow generator 3 toward the hand insertion part 4, high speed air flow is jetted downward from the upper part of the processing space, moisture stuck to the hands is blown away into the processing space and the hands are dried. The air inlet 9 of the high pressure air flow generator 3 is provided on the lower end of an apparatus body, and an air filter unit 10 in which an air filter 11 for filtering sucked air is arranged on a rectangular box-shaped partial surface is disposed at the air inlet 9. The air filter 11 is provided at least at one of the body back surface and body side face of the air filter 10 and the other surface is constituted of a wall. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hand drying device, and more particularly to a hand drying device for hygienically drying wet hands after washing.

  As a device for drying a wet hand after washing, there is a hand drying device that blows off water droplets attached to the hand by a high-speed air flow to dry the hand. In this hand drying apparatus, a hand insertion portion as a concave processing space is provided in a casing, and an air nozzle is disposed in the hand insertion portion. The air nozzle is connected to an air duct connected to the high-pressure airflow generator so as to eject a high-speed airflow into the manual insertion portion. As the hand is dried, the water blown off at the hand insertion portion is dropped from a drain port provided at the bottom of the hand insertion portion into a drain container provided below the hand insertion portion and received. It is configured as follows. In addition, there exists what is disclosed by patent document 1 as this kind of prior art.

JP 2005-160839 A

  In the above-mentioned Patent Document 1, a planar air filter is provided at an air intake opening opened below the bottom surface of the hand dryer main body, thereby preventing dust and the like from entering the high-pressure airflow generator. Also prevents the inhalation of water droplets scattered from the hand. However, since the space below the air filter is an open space, the suction noise from the high-pressure airflow generator is likely to reach the user side directly in front, and the user feels uncomfortable. There was a problem of high frequency.

  Moreover, in the hand dryer of the said patent document 1, since the air filter is provided in the air intake opening opened below the main body casing bottom face, when installing a main body casing near a floor or a washstand, the said air If the gap between the filter and the floor or the wash basin is narrow, there is a possibility that water droplets on the floor or the wash basin may be sucked by the air filter air intake.

  Furthermore, in the hand dryer of the above-mentioned patent document 1, since an air filter is provided at an air intake opening opened below the bottom surface of the main body casing, the main body casing is placed on a washstand such as a toilet. Then, the air filter that is the intake portion is blocked. As a result, if sufficient air is not sent to the high-pressure airflow generator, not only the air blowing performance when drying hands is lowered, but also the high-pressure airflow generator is loaded and causes failure. There was a problem.

  The present invention has been made in view of the above, and reduces the suction noise of the high-pressure airflow generator when drying the hand to improve the feeling of use, and the installation location is near the floor or the washstand. The purpose is to obtain a safe and hygienic hand dryer by making it difficult to inhale dust and water droplets.

  In order to solve the above-described problems and achieve the object, the present invention is provided with a hand insertion portion including a concave processing space having a size that allows a hand to be put in and out, and provided toward the hand insertion portion. A high-pressure airflow generator that blows a high-speed airflow downward from the upper part of the space, blows moisture adhering to the hand that has been pushed out into the processing space by the kinetic energy of the high-speed airflow, and dries the hand; The air suction port of the high-pressure airflow generation device is provided at the lower end of the device body, and the air filter that closes the air suction port and filters the intake air from the air suction port is provided An air filter unit disposed on a part of the surface of the rectangular box, the air filter is provided on at least one of the rear surface and the side surface of the air filter unit; Characterized by being configured in.

  According to the present invention, the air suction port of the high-pressure airflow generator is provided at the lower end of the device body, and the air filter that closes the air suction port and filters the intake air has a rectangular box shape. Since it is provided on at least one of the back and side surfaces of the main body and the other surfaces are walls, the suction noise of the high-pressure airflow generator when drying your hands is reduced, improving the feeling of use. Even if the apparatus main body is installed near or on the floor or the washstand, dust and water droplets are difficult to inhale, and it is possible to provide a safe and sanitary hand dryer. In particular, by providing the air filter on the back surface and both side surfaces of the main body of the air filter unit, the area of the air filter is increased, and the noise can be significantly reduced.

FIG. 1 is a side cross-sectional view of a hand dryer according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the hand drying device of FIG. FIG. 3 is a perspective view showing an air filter unit in which an air filter is provided on the back side of the main body of the hand dryer according to the first embodiment of the present invention. FIG. 4 is a perspective view showing an air filter unit in which air filters are provided on both the main body back side and the main body side surface of the hand dryer according to the first embodiment of the present invention. FIG. 5 is a perspective view showing an air filter unit in which an air filter is provided on the side surface of the main body of the hand dryer according to the first embodiment of the present invention. FIG. 6 is a perspective view of a hand drying device for explaining a state in which the air filter unit is inserted into and removed from the device main body as viewed obliquely from below. FIG. 7 is a side cross-sectional view of the hand dryer according to the second embodiment of the present invention.

  Hereinafter, an embodiment of a hand dryer according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a side cross-sectional view of a hand dryer according to Embodiment 1 of the present invention. As shown in FIG. 1, the hand dryer 1 according to the first embodiment includes a high-pressure airflow generator 3 incorporated in a main body casing 2 that forms an outer shell having a hand insertion opening toward the front on the left side of the figure. ing. The high-pressure air generated by the high-pressure airflow generator 3 is sent to an air nozzle 3a provided in the vicinity of the hand insertion port, and the hand inserted in the hand insertion portion 4 as a processing space following the hand insertion port. A high-speed air flow is formed as a working air flow related to the hand drying that blows off the water adhering to the water. The main body casing 2 is composed of a base 2a forming a back side outer shell and a front panel 2b forming a front side outer shell.

  The manual insertion portion 4 is formed as an open sink-like concave space in which the front and both side surfaces are opened in the lower front portion of the main casing 2 and the hand can be inserted and removed in the front, rear, left and right directions. The water receiving part 5 that forms the lower part of the manual insertion part 4 and the back side thereof are provided with a barrier structure by the rising of the curved surface structure at the end green part to prevent water scattering to the side and the front. Yes. The bottom portion of the water receiving portion 5 is inclined downward in the front direction (left side direction in FIG. 1), and a drain port 6 is provided at the lower end of the inclined portion.

  Further, a drain container 7 having an open container structure for storing water dripping from the drain port 6 is provided below the water receiving portion 5 so as to be detachable by inserting and removing in the front-rear direction (left-right direction in FIG. 1: arrow A direction). It has been. Further, the drain container 7 is provided with a removable lid. Here, the drain container 7 and the lid are made of chemical-resistant ABS resin, and can be cleaned and cleaned using a neutral detergent, alcohol, or the like. Further, the surface of the hand insertion portion 4 is impregnated with a water-repellent coating such as silicon or fluorine, a hydrophilic coating such as titanium oxide, or an antibacterial agent, thereby reducing the adhesion of dirt to the surface. We are trying to reduce the growth of bacteria.

  The high-pressure airflow generator 3 is composed of a DC brushless motor (which may be a commutator motor or an induction motor), a drive circuit that drives the high-pressure airflow generator 3, and a turbo fan that is rotated by the DC brushless motor. In this Embodiment 1, it arrange | positions just above the manual insertion part 4 of the main body casing 2, and the intake side is attached to the base 2a side. The intake side of the high-pressure airflow generator 3 is provided in the longitudinal direction on the back side of the main body casing 2 in the vicinity of the back side of the hand insertion portion 4 and faces the intake passage 8 with the lower end open. In addition, an air filter unit 10 that can be attached to and detached from the air intake port 9 as an air suction port at the lower end of the intake passage 8 by inserting and removing in the front-rear direction (left-right direction in FIG. 1: arrow A direction) is provided. The back surface or side surface of the air filter unit 10 is formed of the air filter 11, but the other surfaces (front surface, bottom surface, etc.) are walls. Thus, the high-pressure airflow generator 3 is configured to suck air through the air filter 11 of the air filter unit 10.

  FIG. 2 is a perspective view of the hand drying device of FIG. As shown in FIG. 2, the drain container 7 and the air filter unit 10 are provided at the lower end of the hand dryer 1, and it can be seen that the back surface of the air filter unit 10 is formed of the air filter 11.

  FIG. 3 is a perspective view showing an air filter unit in which an air filter is provided on the back side of the main body of the hand dryer according to the first embodiment of the present invention. The air filter unit 10 shown in FIG. 3 is provided with a plate-like knob that can be picked up with a finger when it is inserted and removed in the front direction (the direction of arrow B in FIG. 3). In addition, among the rectangular box shape (cuboid shape), only the back surface is configured by the air filter 11a, and the other front surface, bottom surface, and both side surfaces of the main body are configured by walls. Therefore, as shown in the perspective view of FIG. 2, when the air filter unit 10 of FIG. 3 is attached to the main body casing 2, the air passes through the air filter 11, and the upper surface opening portion in the air filter unit 10. Then, the air is taken into the high-pressure airflow generator 3 from the air intake 9 shown in FIG. Thereby, since the noise due to the suction is released to the back side of the main body, it becomes difficult to reach the front side where the user of the hand dryer 1 stands, and the user's discomfort can be reduced. Further, a sound absorbing material may be attached in the air filter unit 10 in order to further reduce noise due to suction. Furthermore, noise reduction can be further enhanced by making the outer portion of the air filter unit 10 metallic with high soundproofing properties.

  Further, by adopting the structure of the air filter unit 10 as shown in FIG. 3, the main body casing 2 of the hand dryer 1 shown in FIG. 1 can be installed on a place close to the floor or on a sink. Even when the gap between the floor 11 and the floor or the wash basin is narrow, the suction direction is set to the horizontal direction, so that a structure that does not suck air from the bottom side of the air filter unit 10 facing the floor or the wash basin can be obtained. As a result, water drops and dust on the floor and the washstand are not sucked, and a safe and hygienic hand dryer 1 can be obtained.

  Furthermore, although not shown in detail in the drawing, an air filter 11a provided on the back surface of the air filter unit 10 shown in FIG. 3 is provided with a resin or metal filter. Moreover, as a kind of air filter 11a, a HEPA filter, an antibacterial filter, etc. can be used suitably. In addition, the front side of the bottom surface of the air filter unit 10 is substantially horizontal or has a planar shape inclined downward toward the air filter 11a on the back surface. For this reason, even if a water droplet enters the air filter unit 10, a structure that does not easily stay in the air filter unit 11 is adopted.

  FIG. 4 is a perspective view showing an air filter unit in which air filters are provided on both the main body back side and the main body side surface of the hand dryer according to the first embodiment of the present invention. The structure of the air filter unit 10 in FIG. 4 is different from that in FIG. 3 in that the suction area is enlarged by providing the air filter 11a on the back surface of the main body and the air filters 11b on both sides. By adopting such a structure, even if the height of the air filter unit shown in FIG. 4 is made smaller than that in FIG. 3, a sufficient amount of air can be sucked. can do. Moreover, since the protrusion amount from the main body casing 2 shown in FIG. 1 can be reduced by reducing the height direction, a smart design effect with a sense of unity can be obtained. In addition, since the suction wind speed is suppressed by increasing the suction area, the suction noise can be further reduced.

  FIG. 5 is a perspective view showing an air filter unit in which an air filter is provided on the side surface of the main body of the hand dryer according to the first embodiment of the present invention. The structure of the air filter unit 10 in FIG. 5 is a hand-drying device even in an installation situation in which intake from the back side is not possible by providing a wall on the back side of the main body and providing air filters 11b on both sides opposite to FIG. It is characterized in that an intake port is secured from the side where it is difficult for noise to reach the front side where the user 1 stands. By adopting such a structure, it is an installation place where it is difficult to secure intake from the back side, such as when the main body casing 2 of the hand dryer 1 is in contact with the wall and installed on the floor or washstand. Even in this case, intake air from the air filters 11b on both sides can be secured. In addition, since it is an intake sound from the side that is difficult to reach directly to the front where the user stands, the user's discomfort can be reduced.

  FIG. 6 is a perspective view of a hand drying device for explaining a state in which the air filter unit is inserted into and removed from the device main body as viewed obliquely from below. As shown in the perspective view of FIG. 6, the air filter unit 10 can be attached and detached by sliding it in the direction of arrow A in the figure with respect to the air inlet 9 of the main body casing 2. The direction of insertion / removal of the air filter unit 10 (arrow A direction) is the same as the direction of insertion / removal of the drain container 7 and can be pulled out from the front side of the main body, so that the drain container 7 and the air filter unit 10 can be easily cleaned. , The burden on the operator can be reduced.

  Thus, according to the hand dryer according to the first embodiment, the air intake 9 of the high-pressure airflow generator 3 is provided at the lower end of the apparatus main body, and the air intake 9 is formed into a rectangular box-shaped air. An air filter 11 that closes the filter unit 10 and filters the intake air from the air intake port 9 is disposed on at least one of the rear surface and the side surface of the main body of the air filter unit 10, and the other surfaces are configured by walls. Yes. For this reason, when the air filter 11 is disposed only on the back surface of the main body of the air filter unit 10, noise due to air suction is released to the back surface side of the main body, making it difficult to reach the front side where the user of the hand dryer 1 stands. Therefore, a user's discomfort can be reduced.

  In addition, according to the hand dryer according to the first embodiment, the arrangement of the air filter 11 limits the air suction direction to the horizontal direction as at least one of the main body back surface and the main body side surface of the air filter unit 10, Water and dust on the floor and washstand are not sucked, and a safe and hygienic hand dryer can be obtained.

  Further, according to the hand dryer according to the first embodiment, the air filter unit 10 has a substantially horizontal plane or a planar shape inclined downward toward the back air filter 11a. Even if a water droplet enters the unit 10, it can be made difficult to stay in the air filter unit 11.

  Moreover, according to the hand dryer according to the first embodiment, since the air filter 11 is arranged on both the back surface and the side surface of the main body of the air filter unit 10, the suction area is increased, so the height of the air filter unit is increased. Since the protrusion amount from the main body casing 2 is reduced, a smart design effect with a sense of unity can be obtained. In addition, since the suction wind speed is suppressed by increasing the suction area, the suction noise can be further reduced.

  Further, according to the hand dryer according to the first embodiment, since the air filter 11 is arranged on both side surfaces of the air filter unit 10, the user of the hand dryer 1 can be installed even in an installation situation where intake from the back side is not possible. Since it is possible to secure an intake port from the side where noise is difficult to reach directly on the front side where the noise stands, the user's discomfort can be reduced.

  In addition, according to the hand dryer according to the first embodiment, the drain container 7 and the air filter unit 10 can be inserted into and removed from the main body casing 2 from the front side of the apparatus main body. The air filter unit 10 can be easily cleaned and the burden on the operator can be reduced.

Embodiment 2. FIG.
FIG. 7 is a side cross-sectional view of the hand dryer according to the second embodiment of the present invention. As shown in FIG. 7, the configuration other than the air filter unit 10 is basically the same as that of FIG.

  The characteristic configuration of the hand dryer 1 shown in FIG. 7 is that it includes a pedestal portion 10a in which the bottom side of the bottom surface of the air filter unit 10 is planar and the bottom area is widened. For this reason, according to the second embodiment, as shown in FIG. 7, by providing the pedestal portion 10 a on the back side of the bottom surface of the air filter unit 10, the hand dryer 1 is placed on the base 12 and installed. In addition, the base portion 10a of the air filter unit 10 can be stably supported. Thereby, it is possible to save the labor of installing the hand dryer 1 on the wall by using the base 2a on the back side of the hand dryer 1 or the like.

  As for the arrangement configuration of the air filter in the air filter unit 10 of the second embodiment, the air filters 11a and 11b are arranged on the back surface or both side surfaces as in FIGS. 3 to 5 described in the first embodiment. Thus, the same effect as in the first embodiment can be obtained.

  As described above, the hand dryer according to the present invention is useful for hand dryers that can be installed in various places, and is particularly safe even when installed on a table, a floor surface, or a place close thereto. Suitable for hand dryers that can be installed hygienically.

DESCRIPTION OF SYMBOLS 1 Hand dryer 2 Main body casing 2a Base 2b Front panel 3 High pressure airflow generator 3a Air nozzle 4 Hand insertion part 5 Water receiving part 6 Drain port 7 Drain container 8 Intake passage 9 Air intake 10 Air filter unit 10a Base part 11 Air filter 11a, 11b Air filter 12 units

Claims (3)

A hand insertion part consisting of a concave processing space with an area where hands can be taken in and out;
A high-speed air flow is ejected from the upper part of the processing space downward from the upper part of the processing space, and moisture adhering to the inserted hand is blown into the processing space by the kinetic energy of the high-speed air flow. A high-pressure airflow generator that dries and dries hands,
A hand dryer comprising:
An air suction port of the high-pressure airflow generator is provided at the lower end of the device body, and an air filter that closes the air suction port and filters the intake air from the air suction port is formed on a part of the rectangular box shape. With an air filter unit arranged,
A hand-drying apparatus, wherein the air filter is provided on at least one of a rear surface and a side surface of the main body of the air filter unit, and the other surface is formed of a wall.   The hand dryer according to claim 1, wherein the air filter unit has a substantially horizontal planar shape on the back side of the bottom surface. The air filter unit further includes a pedestal that has an increased area on the back side of the bottom surface,
3. The hand according to claim 2, wherein when the apparatus main body is arranged on the installation surface, the apparatus main body is supported and installed in a state in which the base portion of the bottom surface of the air filter unit is in contact with the installation surface. Drying equipment.

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