JP5093763B2 - Hand dryer - Google Patents

Description

  The present invention relates to a hand drying apparatus that blows air on a user's hand to dry the hand.

  In recent years, especially in public toilets and the like, there is an increasing tendency to reduce paper towels for wiping off water adhering to hands after hand washing, and there is an increasing number of cases where hand dryers are installed instead of paper towels. Such a hand-drying device is often installed on the wall surface of a wash counter slightly away from the place where the wash bowl is located, or on the wall surface of a toilet space away from the wash counter (the following patent document) 1).

  In the hand drying device proposed in the following Patent Document 1, when a hand is inserted into the opening recess from above the housing, and the sensors provided on the palm side wall surface and the instep side wall surface of the opening recess respectively detect the hands, Warm air is blown to the palm side and back side of the palm from the plurality of nozzles on the palm side and back side nozzles provided in a substantially horizontal straight line on each wall surface, and water droplets attached to the hand are removed. It is designed to flow downward while flying.

JP 2010-227320 A

  In the above-mentioned Patent Document 1, both the palm-side and back-side fan motor units have the same form having the same maximum output, and both can rotate the rotational drive shaft rotational speed as desired. . When using the hand dryer, set each fan motor unit so that the rotation drive shaft for the palm side rotates faster than the rotation drive shaft for the back side, and the air volume supplied to the palm side is the air volume supplied to the back side of the hand It is described that it is preferable to make it larger than.

  When the hand is dried with a hand drying device, the palm side is more difficult to dry than the back side of the hand, so the present inventors have supplied as much airflow as possible to the palm side so that more wind hits the palm side. I thought about it and examined it. However, if the amount of air supplied to the palm side is increased, a lot of wind hits the palm that is difficult to dry and the hand is easy to dry. I found that the wind blows back.

  The present invention has been made in view of such a problem, and its purpose is to reduce the blowing of the wind toward the user as much as possible even when the air volume is adjusted so as to apply a large amount of wind to the palm side. An object of the present invention is to provide a hand dryer that can be reduced.

  In order to solve the above problems, a hand drying device according to the present invention is a hand drying device that blows air on a user's hand to dry the air, a blower that blows out air, a housing that contains the blower, and a user The front side wall formed by the front side member of the housing and the back side wall formed by the back side member are opposed to each other so that a space into which the hand is inserted is formed. A hand drying chamber that is erected and has openings formed on the upper surface of the housing and connected to the front side wall and the back side wall, and air blown from the blower provided in the back side member, into the hand drying chamber A first nozzle that blows out, and a second nozzle that is provided in the front side member and blows out the air blown from the blower into the hand drying chamber with a larger air volume than the first nozzle. And, equipped with a. The hand drying device according to the present invention further includes the front side wall and the back surface after the air blown from the second nozzle flows along the bottom wall to at least one of the front side member and the back side member. Wind direction regulating means is provided for adjusting the traveling direction so as to form a swirling flow flowing across the side wall.

  In this invention, since the 2nd nozzle which blows off air with a bigger air volume than the 1st nozzle provided in the back side member is provided in the front side member, a user turns the palm side toward the front side member and puts a hand. When inserted into a hand-drying chamber, a large amount of air can be applied to the palm of the user. Furthermore, an air direction regulating means is provided, and the direction of travel of the air blown out from the second nozzle is changed so as to form a swirling flow that flows along the bottom wall and flows across the front side wall and the rear side wall. It is adjusting. In this way, by creating a crossing air flow between the front side wall and the back side wall, the crossing air itself does not blow back to the user side, and other air flow blows back to the user side by the crossing air. It can be a deterrent. Therefore, it is possible to provide a hand drying device that minimizes the blow back of the air ejected from the second nozzle to the user and does not cause the user to feel uncomfortable.

  In the hand dryer according to the present invention, the air direction regulating means adjusts the traveling direction of the air blown out from the second nozzle and traveling toward the back side wall so as to go toward the front side wall, and the adjustment. It is also preferable that the air headed as a result of the above flow causes the swirl flow to flow again toward the front side wall after flowing from the front side wall through the bottom wall and along the back side wall.

  In this preferred embodiment, the air blown from the second nozzle is flowed again from the rear side wall toward the front side wall, following the flow and below the flow, from the front side wall through the bottom wall, and again along the rear side wall. A swirling flow composed of a flow toward the side wall is formed. Since the air flow formed below is a flow from the front side wall through the bottom wall to the back side wall and again toward the front side wall, it circulates in the space surrounded by the front side wall, the bottom wall, and the back side wall. An air flow can be formed. Furthermore, the air flow from the rear side wall, which is part of the air flow circulating downward, to the front side wall, and the air, from the back side wall, which is part of the air flow circulating above, to the front side wall. Therefore, the air flow circulating in the lower part is likely to be caught up in the newly generated air flow, and the blow back to the user is more reliably suppressed. Can do.

  In the hand dryer according to the present invention, the wind direction regulating means has a regulating wall provided at a position lower than the height corresponding to the second nozzle on the back side wall, and the wall surface of the back side wall Is formed so as to connect the bottom wall from the opening, while the regulation wall surface of the regulation wall extends so as to intersect with the wall surface of the back side wall, and is preferably arranged to face the opening side. .

  In this preferred embodiment, a regulating wall is provided on the rear side wall, and the regulating wall surface of the regulating wall is arranged so as to cross the wall surface of the rear side wall and face the opening side. Therefore, the regulation wall surface can be provided toward the second nozzle side, and the traveling direction of the air blown out from the second nozzle can be reliably adjusted so as to face the front side wall.

  In the hand dryer according to the present invention, the regulation wall has a sub-regulation wall that intersects with the regulation wall, and the sub-regulation wall extends so as to intersect with the wall of the back side wall and faces the bottom wall. It is also preferable that they are arranged as described above.

  In this preferred embodiment, a sub-regulating wall surface that intersects with the regulating wall surface is provided, and the sub-regulating wall surface is arranged so as to cross the wall surface of the back side wall and face the bottom wall side. Therefore, the flow of air along the back side wall from the front side wall through the bottom wall can be reliably made to flow again toward the front side wall by the sub regulating wall surface.

  In the hand dryer according to the present invention, the wall surface of the back side wall is constituted by a first wall surface extending from the opening to the restriction wall and a second wall surface extending from the restriction wall to the bottom wall, It is also preferable that a concave portion is formed such that the wall surface becomes a bottom surface and the restriction wall surface becomes a side surface, and a side surface facing the side surface by the restriction wall surface is formed on the opening side.

  In this preferred embodiment, the first wall surface, which is the upper wall surface of the back side wall, is used as the bottom surface, and the recess is formed with the regulation wall surface as the side surface. Therefore, the air blown out from the second nozzle is divided into a flow that hits the first wall surface and travels toward the regulation wall surface, and a flow that spreads along the first wall surface that is the bottom surface of the recess. Since the recess has a side facing the side defined by the regulating wall surface on the opening side, the flow of air spread on the bottom surface should not flow out to the user side reliably at the side of the recess formed on the opening side. Can be oriented.

  Further, in the hand dryer according to the present invention, the air direction regulating means causes the traveling direction of the air blown out from the second nozzle and traveling toward the back side wall to be along the back side wall, and as a result, the bottom wall It is also preferable that the air directed toward the side causes a swirl flow that flows toward the back side wall again after flowing along the front side wall through the bottom wall.

  In this preferred embodiment, a swirling flow is formed in which the air blown out from the second nozzle flows from the back side wall through the bottom wall along the front side wall toward the back side wall again. Accordingly, it is possible to reliably form a swirling flow that flows from the back side wall to the back side wall again along the front side wall without scraping the momentum of the air blown from the second nozzle.

  In the hand dryer according to the present invention, the wind direction regulating means has a regulating wall provided at a position lower than a height at which the second nozzle is provided on the front side wall, and the front side wall The wall surface is formed so as to connect the bottom wall to the opening, while the regulation wall surface of the regulation wall extends so as to intersect the wall surface of the front side wall and is arranged to face the bottom wall side. It is also preferable.

  In this preferred embodiment, a regulating wall is provided on the front side wall, and the regulating wall surface of the regulating wall is arranged so as to cross the wall surface of the front side wall and face the bottom wall side. Therefore, the regulation wall surface can be provided toward the bottom wall side, and the traveling direction of the air along the front side wall from the back side wall through the bottom wall can be reliably adjusted so as to surely go to the back side wall again.

  In the hand drying device according to the present invention, it is also preferable that the distance between the regulation wall and the bottom wall is arranged so as to be substantially the same as the distance between the front side wall and the back side wall.

  In this preferred embodiment, since the distance between the regulation wall and the bottom wall is arranged to be substantially the same as the distance between the front side wall and the rear side wall, the region where the swirl flow is formed faces the swirl flow center. It is possible to include a region that is substantially square when viewed in FIG.

  Moreover, in the hand dryer according to the present invention, a side member having a vent is provided between the front side wall and the back side wall, and the side member is a part of the air discharged from the vent. It is also preferable to provide an adjusting means for adjusting the traveling direction of the air flowing from the back side wall toward the front side wall.

  In this preferred embodiment, the side member is provided with an adjusting means for adjusting a traveling direction of air flowing from the rear side wall toward the front side wall out of the air discharged from the vent hole. Therefore, it is possible to prevent a strong wind from being generated from the vent toward the user.

  Moreover, in the hand dryer according to the present invention, the adjusting means is a peripheral edge of the vent on the back side wall side, and the side member so that the air flowing from the back side wall toward the front side wall abuts It is also preferable that the rib is formed so as to protrude into the hand drying chamber.

  In this preferred embodiment, the rib is formed at the peripheral edge of the vent hole on the back side wall side so as to protrude into the hand drying chamber so that air flowing from the back side wall toward the front side wall abuts. Since the air flowing from the back side wall toward the front side wall contacts the rib, the traveling direction of the air flowing from the back side wall toward the front side wall can be changed.

  Moreover, in the hand dryer according to the present invention, the vent is a slit formed between the front side wall and the adjusting means and in a direction perpendicular to the front side member and / or the back side member. It is also preferable.

  In this preferred embodiment, the slit is formed between the front side wall and the adjusting means and in a direction perpendicular to the front side member and / or the rear side member, so that it is difficult for the user to see the hand drying chamber. At the same time, the appearance becomes a clean impression and the design of the hand dryer can be improved.

  In the hand dryer according to the present invention, the adjusting means is attached to the vent and flows in a traveling direction of air flowing from the back side wall toward the front side wall from the front side wall toward the back side wall. It is also preferable that the louver be changed.

  In this preferred form, the louver is attached to the vent and changes the traveling direction of the air flowing from the back side wall toward the front side wall so as to flow from the front side wall toward the back side wall. Therefore, in the vent hole, the direction of the air to be discharged from the vent hole can be changed so as not to be discharged from the vent hole, so that it is possible to prevent a strong wind from being generated from the vent hole toward the user. .

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where air volume is adjusted so that many winds may be applied to the palm side, the hand drying apparatus which can reduce the blowing of the wind to a user side as much as possible can be provided. .

It is a perspective view which shows the external appearance of the hand dryer which is embodiment of this invention. It is a longitudinal cross-sectional view of the hand dryer shown in FIG. It is a longitudinal cross-sectional view which shows the flow of the air in the opening recessed part shown in FIG. It is a longitudinal cross-sectional view which shows the flow of the air in the opening recessed part of the hand dryer as a modification. It is a longitudinal cross-sectional view which shows the flow of the air in the opening recessed part of the hand dryer as a modification. It is a longitudinal cross-sectional view which shows the flow of the air in the opening recessed part of the hand dryer as a modification. It is a perspective view which shows the external appearance of the hand dryer as a modification. It is a longitudinal cross-sectional view which shows the flow of the air in the opening recessed part of the hand dryer as a modification. It is a top view of the hand dryer as a modification. It is a perspective view which shows the external appearance of the hand dryer as a modification. It is a longitudinal cross-sectional view which shows the flow of the air in the opening recessed part of the hand dryer as a modification. It is a top view of the hand dryer as a modification.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  With reference to FIG. 1, a hand dryer according to an embodiment of the present invention will be described. FIG. 1 is a perspective view of a hand dryer 1 according to an embodiment of the present invention.

  The hand dryer 1 of this embodiment is installed on the side of a washbasin with a faucet installed on a wall such as a washroom, for example, and a person who has washed his / her hand using the faucet and washbasin Used to dry wet hands.

  In the following, for convenience of explanation, in the part (element) constituting the hand drying device 1 of the present embodiment, each element of the related element for drying the palm side of the hand is denoted by “palm side” and the back of the hand. In some cases, the name of the related part for drying the side may be labeled “Side-side”, and the term “palm-side” or “Side-side” is used for the same purpose when explaining the positional relationship. There is a case. In other words, with the hand dryer 1 attached to the wall surface, the “palm side” is “front side” and “front side”, and “back side” is “wall side” and “rear side” It is. Therefore, the “front side” and the “front side” may be used instead of the “palm side”, and the “wall surface side” and the “rear side” may be used instead of the “back side”. In this embodiment, the case where the hand dryer 1 is installed on the wall surface of the washroom is described, but the installation mode of the hand dryer 1 is not limited to this, and for example, the floor is not fixed to the wall surface. It may be erected on the surface.

  As shown in FIG. 1, the hand dryer 1 includes a housing 2 and a water receiving tray 19. The housing 2 includes a front side member 2a (front side member), a back side member 2b (wall surface side member), a side member 2c, and a side member 2d. The housing 2 is formed with an opening recess 4 as a hand drying chamber, and a blower (not shown in FIG. 1) is incorporated below the opening recess 4. The opening recess 4 is open upward, and an opening 4u for the user to insert his / her hand is formed.

  The front side member 2a that is on the near side with respect to the user with the hand dryer 1 attached to the wall surface has a plurality of nozzles 6a (second nozzle, FIG. 1 is not specified). In addition, the back-side member 2b that is on the wall surface side with respect to the user with the hand dryer 1 attached to the wall surface has a plurality of nozzles arranged in a straight line in the horizontal direction at substantially equal intervals in the same manner as the nozzle 6a. 6b (first nozzle) is provided. The nozzle 6 a and the nozzle 6 b are nozzles for blowing an air flow fed from the blower into the opening recess 4.

  Further, a side surface member 2d is detachably mounted on the right side surface of the housing 2, and the side surface member 2d is provided with a trapezoidal vent 5a having a louver 5 that prevents passage of water droplets. A side surface member 2c having a mirror-symmetrical shape with the side surface member 2d is also detachably mounted on the left side surface of the housing 2. A water receiving tray 19 is detachably attached to the bottom of the housing 2 in order to collect water droplets blown from the wet hand inserted into the opening recess 4.

  Next, the hand dryer 1 will be described in more detail with reference to FIG. FIG. 2 is a longitudinal sectional view in the vicinity of the center of the hand dryer 1. In FIG. 2, the flow of air or wind is indicated by arrows.

  As shown in FIG.1 and FIG.2, the hand dryer 1 of this embodiment is provided with the housing 2 surrounding a hand dryer main body. In the upper part of the housing 2, an opening recess 4 having an open upper end is provided so that both hands lined up from above the housing 2 can be inserted.

  This opening recessed part 4 is a part (hand drying chamber) which arrange | positions a hand there and winds and dries. Usually, the hand is inserted into the opening recess 4 from above the housing 2 with the palm facing the front side member 2a side of the housing 2 and the back of the hand facing the back side member 2b side of the housing 2. .

  In the hand drying device 1 of the present embodiment, a hand is inserted into the opening recess 4 from above the housing 2, and the sensors 3a and 3b provided on the front side wall 4a and the back side wall 4b of the opening recess 4 respectively detect the hand. The warm air is blown to the palm side and the back side of the hand from the plurality of palm side nozzles 6a and the back side nozzle 6b provided in a substantially horizontal straight line on each of the wall surfaces 4a and 4b. It is designed to flow downward while flying water droplets attached to the hand.

  The housing 2 is provided with a fan motor unit for sending air to the palm-side nozzle 6a and the back-side nozzle 6b. The fan motor unit 8 is disposed such that the rotational drive shaft 10 extends in a direction perpendicular to the front side member 2a and / or the back side member 2b of the housing 2.

  When the hand dryer 1 is used, the cross-sectional areas of the flow paths of the palm-side air duct 30a and the back-side air duct 30b are such that the air volume supplied to the palm side is larger than the air volume supplied to the back side of the hand. Is set. A suction port 14 is provided at the rear end of the casing of the fan motor unit 8.

  On the other hand, a blower outlet 16 protruding upward is formed at the downstream end of the blowout duct 15 of the fan motor unit 8. The blower outlet 16 is provided with a fin heater 18 so that the air blown from the blower outlet 16 is heated by the fin heater 18.

  Further, a water receiving tray 19 is provided at the bottom 2e of the housing 2, and the water that has fallen on the wall surface 4cs of the shoulder-shaped bottom wall 4c and swept on both sides in the opening recess 4 is removed from the inner side of the housing 2. It falls into the water receiving tray 19 through a drainage groove (not shown). Further, an air intake port 22 provided with a filter 20 is provided on the back side of the water receiving tray 19, and an intake duct 24 b is connected to the air intake port 22.

  The intake duct 24 has an upstream end 26 disposed on the filter 20 of the air intake port 22, and communicates the upstream end 26 and the suction port 14 along the rear side member 2 b of the housing 2 from the upstream end 26. It extends almost straight upward. During operation of the hand dryer 1, air outside the housing 2 is sucked into the intake duct 24 from the air intake port 22 through the filter 20.

  Furthermore, a sound absorbing material 28 is disposed in the upper portion of the intake duct 24 adjacent to the suction port 14 of the fan motor unit 8, and the sound absorbing material 28 leaks from the suction port 14 during operation of the fan motor unit 8. Each sound is absorbed.

  Further, a palm-side air duct 30a is connected to the air outlet 16, and the palm-side air duct 30a is adjacent to the front side member 2a of the housing 2 and extends upward from the air outlet 16a. Is formed. Furthermore, the rear side in the air duct 30a for the palm side has the wall surface 4as formed by the front side wall 4a of the opening recess 4 described above. The nozzle 6a is arranged so as to be positioned almost directly above the palm-side air outlet 16a.

  Further, an air duct 30b for the upper side is connected to the air outlet 16 in the same manner as the air outlet 16a for the palm side. The upper side air duct 30b is formed so as to extend from the upper side air outlet 16b to a plurality of nozzles 6b arranged on the wall surface 4bs of the back side wall 4b of the opening recess 4.

  The dimensions of the housing 2 are determined so that the palm and the back of the hand do not come into contact with each of the wall surface 4as and the wall surface 4bs of the opening recess 4 when both adult hands are inserted into the opening recess 4 side by side. Yes.

  For example, the lateral width of the housing 2 is preferably 200 mm to 350 mm, and most preferably 300 mm. The depth of the housing is preferably 120 mm to 250 mm, and most preferably 180 mm to 200 mm. The distance between the palm-side nozzle 6a and the back-side nozzle 6b is preferably 70 mm to 100 mm, and most preferably 85 mm. The height of the housing 2 is preferably 450 mm to 700 mm, and most preferably 680 mm.

  As described above, the louvers 5 serving as the air venting means are provided on the side surface members 2c and 2d of the housing 2 (see FIGS. 2, 5, and 6), and the nozzles are placed in the hand disposed in the opening recess 4. When hot air is blown from 6a, 6b, water droplets scattered in the direction of the side members 2c, 2d of the housing 2 are blocked by the louver 5 so that only the wind passes through the louver 5.

  In the hand drying device 1 of the present embodiment, when a hand is inserted into the opening recess 4 from above the housing 2, and the sensors 3a and 3b provided on the wall surface 4as and the wall surface 4bs of the opening recess 4 respectively detect the hand, the CPU The fan motor unit 8 is driven by a control means (not shown) composed of components such as a memory and a plurality of palm-side nozzles 6a provided on the both wall surfaces 4as and 4bs in a substantially horizontal straight line and the back side. Warm air is blown from the nozzle 6b to the palm side and back side of the hand, and flows downward while flying water droplets adhering to the hand.

  In the present embodiment, since air is blown out from the nozzle 6a so as to have a relatively large air volume, there is a concern that air blows back from the opening recess 4 to the user side. Therefore, in the present embodiment, a regulating wall 4d (wind direction regulating means) is provided on the back side wall 4b. The regulating wall 4d adjusts its traveling direction so that the air blown from the nozzle 6a forms a swirling flow that flows across the front side wall 4a and the back side wall 4b after flowing along the bottom wall 4c. To do.

  More specifically, the regulation wall 4d is adjusted so that the air traveling direction that is blown out from the nozzle 6a and proceeds toward the back side wall 4b is directed toward the front side wall 4a. A swirling flow that flows from the side wall 4a to the front side wall 4a after flowing along the back side wall 4b through the bottom wall 4c is generated.

  Next, the flow of air in the opening recess 4 due to the action of the regulating wall 4d will be described with reference to FIG. FIG. 3 is a longitudinal sectional view showing the air flow in the opening recess 4. The restriction wall 4d is provided at a position lower than the height corresponding to the nozzle 6a on the back side wall 4b.

  The wall surface of the back side wall 4b is formed so as to connect the opening 4u and the bottom wall 4c, a first wall surface 4ba extending from the opening 4u to the restriction wall 4d, and a second wall surface 4bb extending from the restriction wall 4d to the bottom wall 4c. It is constituted by.

  The regulation wall 4d has a regulation wall surface 4da and a sub regulation wall surface 4db, and is formed in a protruding shape. The regulation wall surface 4da extends so as to intersect the first wall surface 4ba of the back side wall 4b. The regulation wall surface 4da is arranged to face the opening 4u side. On the other hand, the sub regulating wall surface 4db extends so as to intersect with the second wall surface 4bb of the back side wall 4b. The sub-regulating wall surface 4db is disposed so as to face the bottom wall 4c side.

  The air ejected from the nozzle 6a first flows from the front side wall 4a toward the back side wall 4b and flows downward along the first wall surface 4ba of the back side wall 4b. The air flowing along the first wall surface 4ba reaches the regulation wall surface 4da, and the traveling direction changes as the air flows along the regulation wall surface 4da. The air directed by the regulating wall surface 4da faces the front side wall 4a so as to cross between the back side wall 4b and the front side wall 4a. The air reaching the front side wall 4a flows toward the bottom wall 4c along the front side wall 4a. The air that reaches the bottom wall 4c flows along the bottom wall 4c toward the back side wall 4b. The air reaching the back side wall 4b flows along the back side wall 4b toward the regulating wall 4d.

  The air reaching the regulation wall 4d flows toward the front side wall 4a along the sub regulation wall 4db. The air reaching the front side wall 4a flows toward the bottom wall 4c along the front side wall 4a. The air that reaches the bottom wall 4c flows along the bottom wall 4c toward the back side wall 4b. The air reaching the back side wall 4b flows toward the regulating wall 4d along the back side wall 4b, and a swirling flow that circulates is formed.

  As described above, it is preferable that the regulation wall 4d has the regulation wall surface 4da and the sub regulation wall surface 4db in order to effectively form the swirling flow. However, even if the auxiliary regulating wall surface 4db is not provided, the air flows toward the bottom wall 4c along the front side wall 4a, flows toward the back side wall 4b along the bottom wall 4c, and circulates the air reaching the back side wall 4b. It is possible. A modification for this purpose is shown in FIG.

  As shown in FIG. 4, the modified hand drying device 1 </ b> B includes a regulation wall 4 dB only by the regulation wall surface 4 dBa. In the hand dryer 1B, the wall surface of the back side wall 4bB is formed so as to connect the opening 4u to the bottom wall 4c, and the first wall surface 4bBa extending from the opening 4u to the regulation wall 4dB, and the regulation wall 4dB to the bottom wall 4c. And the second wall surface 4bBb. The regulation wall 4 dB has a regulation wall surface 4 dBa. The regulation wall surface 4 dBa intersects with the first wall surface 4 b Ba and the second wall surface 4 b Bb of the back side wall 4 b B, and extends so as to connect the lower end of the first wall surface 4 b Ba and the upper end of the second wall surface 4 b Bb. The regulation wall surface 4 dBa is arranged to face the opening 4 u side.

  Therefore, in the hand dryer 1B, a part near the center of the back side wall 4bB is retracted to form a concave portion having a gentle gradient. Thus, without providing the sub-regulating wall surface 4db, the air flow along the back side wall 4bB can be entrained so as to be entrained in the air flow along the regulating wall surface 4dBa.

  Next, a hand dryer 1C as another modification will be described with reference to FIG. As shown in FIG. 5, the modified hand drying device 1 </ b> C has an opposing regulation wall surface 4 dCc on the opening 4 u side so as to face the regulation wall surface 4 dCa corresponding to the regulation wall surfaces 4 da and 4 dBa.

  The wall surface of the back side wall 4bC is formed so as to connect the opening 4u to the bottom wall 4c, the first wall surface 4bCa extending from the opening 4u to the restriction wall 4d, and the second wall surface 4bCb extending from the restriction wall 4dB to the bottom wall 4c. It is constituted by. The regulation wall 4dC has a regulation wall surface 4dCa. The regulation wall surface 4dCa intersects the first wall surface 4bCa and the second wall surface 4bCb of the back side wall 4bC and extends so as to connect the lower end of the first wall surface 4bCa and the upper end of the second wall surface 4bCb. The regulation wall surface 4dCa is disposed so as to face the opening 4u side.

  Therefore, in the hand dryer 1C, the upper portion of the back side wall 4bC is uniformly retracted, and the recessed portion is formed such that the first wall surface 4bCa that is the retracted surface is substantially parallel to the second wall surface 4bCb. . In this concave portion, the first wall surface 4bCa serves as a bottom surface, the regulation wall surface 4dCa serves as a side surface, and a facing regulation wall surface 4dCc is formed on the opening 4u side as a side surface facing the side surface formed by the regulation wall surface 4dCa.

  As described above, the first wall surface 4bCa, which is the upper wall surface of the back side wall 4bC, is used as the bottom surface, and the recess is formed with the regulation wall surface 4dCa as the side surface. Therefore, the air blown out from the nozzle 6a is divided into a flow that hits the first wall surface 4bCa and travels toward the regulation wall surface 4dCa and a flow that spreads along the first wall surface 4bCa that is the bottom surface of the recess. Since the concavity is formed with the opposed regulating wall surface 4dCc on the opening 4u side as a side surface facing the side surface of the regulating wall surface 4dCa, the flow of air spreading on the first wall surface 4bCa which is the bottom surface is formed on the opening 4u side. The facing restriction wall surface 4dCc, which is the side surface of the recessed portion, can be surely directed so as not to flow out to the user side.

  In the embodiment described above, the regulation walls 4d, 4dB, and 4dC are provided on the rear side walls 4b, 4bB, and 4bC. However, it is also preferable to provide the regulation walls 4d, 4bB, and 4bC on the front side wall 4a. With reference to FIG. 6, a hand dryer 1 </ b> D provided with a regulating wall 4 d </ i> D on the front side wall 4 a </ i> D will be described.

  The regulation wall 4dD adjusts its traveling direction so that the air blown from the nozzle 6a forms a swirling flow that flows across the front side wall 4aD and the back side wall 4bD after flowing along the bottom wall 4c. To do.

  More specifically, the traveling direction of the air blown out from the nozzle 6a and traveling toward the back side wall 4bD is made to follow the back side wall 4bD, and as a result, the air toward the bottom wall 4c passes through the bottom wall 4c, Adjustment is made so as to face the front side wall 4aD, and the air directed as a result of the adjustment rises along the front side wall 4aD. The air rising along the front side wall 4aD is directed toward the back side wall 4bD by the regulating wall 4dD. Thus, by providing the regulating wall 4dD, a swirling flow that flows toward the back side wall 4bD after flowing along the front side wall 4aD through the back side wall 4bD and the bottom wall 4c is generated.

  The regulation wall 4dD is provided at a position lower than the height corresponding to the nozzle 6a in the front side wall 4aD. The wall surface of the front side wall 4aD is formed so as to connect the opening 4u to the bottom wall 4c. It is constituted by.

  The regulation wall 4dD has a regulation wall surface 4dDa. The regulation wall surface 4dDa intersects the first wall surface 4aDa and the second wall surface 4aDb of the front side wall 4aD and extends so as to connect the lower end of the first wall surface 4aDa and the upper end of the second wall surface 4aDb. The regulation wall surface 4dDa is arranged to face the opening 4u side.

  Thus, in the hand dryer 1D, a swirl flow is formed in which the air blown from the nozzle 6a flows from the back side wall 4bD through the bottom wall 4c to the back side wall 4bD again along the front side wall 4aD. Therefore, it is possible to reliably form a swirling flow that flows again from the back side wall 4bD to the back side wall 4bD along the front side wall 4aD through the bottom wall 4c without cutting the momentum of the air blown from the nozzle 6a.

  In the hand dryer 1D, the regulation wall 4dD is provided on the front side wall 4aD, and the regulation wall surface 4dDa of the regulation wall 4dD intersects with the second wall surface 4aDb of the front side wall 4aD and is disposed so as to face the bottom wall 4c side. Therefore, the regulation wall surface 4dDa can be provided toward the bottom wall 4c side, and the traveling direction of the air along the front side wall 4aD from the back side wall 4bD through the bottom wall 4c can be surely directed toward the back side wall 4bD again. Can be adjusted.

  In the hand dryers 1, 1 </ b> B, 1 </ b> C, 1 </ b> D according to the present embodiment, the distance between the regulation walls 4 d, 4 dB, 4 dC, 4 dD and the bottom wall 4 c is such that the front side walls 4 a, 4 a B, 4 a C, 4 a D and the rear side walls 4 b, They are arranged so as to be substantially the same distance from 4bB, 4bC, 4bD.

  In this way, the distance between the regulating walls 4d, 4dB, 4dC, 4dD and the bottom wall 4c is substantially the same as the distance between the front side walls 4a, 4aB, 4aC, 4aD and the back side walls 4b, 4bB, 4bC, 4bD. Therefore, it is possible to include a region that is substantially square when viewed so that the region where the swirling flow is formed faces the center of the swirling flow, and the swirling flow can be reliably generated.

  As described above, the hand dryers 1, 1 </ b> B, 1 </ b> C, 1 </ b> D can minimize the blow back of the air ejected from the second nozzle 6 a to the user, so that the user feels uncomfortable. This is a preferable form in order not to exist. However, when the side members 2c and 2d are provided with the vent 5a, the air jetted from the second nozzle 6a hits the back side wall 4b, and as a result, the air flows from the back side wall 4b toward the front side wall 4a. In some cases, the air may escape from the vent 5a just before hitting the front side wall 4a and move toward the user side. In such a case, it is necessary to take measures on the side of the hand dryer. A modification for this purpose is shown in FIG.

  As shown in FIG. 7, a modified example of the hand drying device 1E is provided with ribs 5b as adjusting means and slits 5c as vent holes on side members 2c and 2d. The rib 5b is formed so that the air flowing from the rear side wall 4bB (shown in FIGS. 8 and 9) toward the front side wall 4a (shown in FIGS. 8 and 9) hits the front side of the slit 5c. It is formed in the peripheral edge near the side, and is formed so as to protrude from the side members 2c and 2d toward the hand drying chamber. The slit 5c is formed between the front side wall 4a and the rib 5b when viewed from above the housing 2 in order to make it difficult for the user to see the inside of the hand drying chamber and to make the appearance clear. It is formed so as to extend in the vertical direction with respect to 2a and / or the back side member 2b. As shown in FIG. 8, in the hand drying device 1E according to the present embodiment, as described with reference to FIG. 4, it is assumed that the wind direction regulating means includes the regulating wall 4dB only by the regulating wall 4dBa.

  Next, the flow of air ejected from the nozzle 6a will be further described with reference to FIGS. FIG. 8 is a longitudinal sectional view in the vicinity of the center of the hand dryer 1E, and FIG. 9 is a plan view of the hand dryer 1E.

  The air ejected from the nozzle 6a first flows from the front side wall 4a toward the back side wall 4bB and flows downward along the first wall surface 4bBa of the back side wall 4bB. The air flowing along the first wall surface 4bBa reaches the regulation wall surface 4dBa, and the traveling direction changes as the air flows along the regulation wall surface 4dBa. The air directed by the regulating wall surface 4 dBa is directed to the front side wall 4a so as to cross between the back side wall 4bB and the front side wall 4a. Of the air directed toward the front side wall 4a, the air flowing near the side members 2c and 2d reaches the rib 5b and changes its traveling direction by coming into contact with the rib 5b. When the air directed by the rib 5b gets over the rib 5b, it flows away from the slit 5c and reaches the front side wall 4a. The air that has reached the front side wall 4a travels again to the back side wall 4bB so as to cross between the back side wall 4bB and the front side wall 4a. Of the air toward the back side wall 4bB, the air flowing near the side members 2c and 2d is discharged through the slit 5c (solid arrow in FIG. 9).

  As described above, in the hand dryer 1E, the ribs 5b are formed so as to protrude from the side members 2c and 2d near the back side wall 4bB, so that the air flowing from the back side wall 4bB toward the front side wall 4a is not easily discharged from the slit 5c. Therefore, it is possible to prevent a strong wind from being generated from the slit 5c toward the user.

  Next, a hand drying device 1F as another modification will be described with reference to FIG. In a modified example of the hand drying device 1F, a louver 5d as an adjusting means is attached in the region of the vent 5a. More specifically, a plurality of louvers 5d are movably attached at intervals in the peripheral edge 5aa of the vent 5a, and the front side wall 4a (from the side members 2c, 2d when the hand dryer 1F is viewed from above. The mounting angle is adjusted so that it protrudes toward FIG.11 and FIG.12. As shown in FIG. 11, the hand drying apparatus 1F according to the present embodiment also includes the same wind direction regulating means as that of the modification shown in FIG. 7, and as described in FIG. It is assumed that the regulation wall 4 dB is configured only by 4 dBa.

  Next, the flow of air ejected from the nozzle 6a will be further described with reference to FIGS. FIG. 11 is a longitudinal sectional view in the vicinity of the center of the hand dryer, and FIG. 12 is a plan view of the hand dryer.

  The air ejected from the nozzle 6a first flows from the front side wall 4a toward the back side wall 4bB and flows downward along the first wall surface 4bBa of the back side wall 4bB. The air flowing along the first wall surface 4bBa reaches the regulation wall surface 4dBa, and the traveling direction changes as the air flows along the regulation wall surface 4dBa. The air directed by the regulating wall surface 4 dBa is directed to the front side wall 4a so as to cross between the back side wall 4bB and the front side wall 4a. Of the air toward the front side wall 4a, the air flowing near the side members 2c and 2d reaches the vent hole 5a and changes its advancing direction by coming into contact with the louver 5d. The air directed by the louver 5d flows away from the vent 5a and reaches the front side wall 4a. The air that has reached the front side wall 4a travels again to the back side wall 4bB so as to cross between the back side wall 4bB and the front side wall 4a. Of the air toward the back side wall 4bB, the air flowing near the side members 2c and 2d is discharged through the vent 5a (solid arrow in FIG. 12).

  In this way, in the hand dryer 1F, by forming the louver 5d in the vent 5a, the traveling direction of the air flowing from the back side wall 4bB to the front side wall 4a can be changed. It is possible to prevent a strong wind from being generated toward the person.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

1: Hand dryer 1B: Hand dryer 1C: Hand dryer 1D: Hand dryer 1E: Hand dryer 1F: Hand dryer 2: Housing 2a: Front side member 2b: Back side member 2c: Side member 2d: Side Member 2e: Bottom 3a, 3b Sensor 4: Opening recess 4a: Front side wall 4aD: Front side wall 4aDa: First wall surface 4aDb: Second wall surface 4as: Wall surface 4b: Rear side wall 4bB: Rear side wall 4bBa: First wall surface 4bBb: Second Wall surface 4bC: Back wall 4bCa: First wall surface 4bCb: Second wall surface 4bD: Back wall 4ba: First wall surface 4bb: Second wall surface 4bs: Wall surface 4c: Bottom wall 4cs: Wall surface 4d: Restriction wall 4dB: Restriction wall 4dBa: Restriction Wall surface 4dC: Restriction wall 4dCa: Restriction wall surface 4dCc: Opposing restriction wall surface 4dD: Restriction wall surface 4dDa: Restriction wall surface 4da: Restriction wall surface 4da: Restriction wall surface 4db: Sub-regulation wall surface 4 u: opening 5: louver 5a: vent 5aa: peripheral edge 5b: rib 5c: slit 5d: louver 6a: second nozzle 6b: first nozzle 8: fan motor unit 10: rotational drive shaft 14: suction port 15: blowout Duct 16: Air outlet 16a: Air outlet 16b: Air outlet 18: Fin heater 19: Tray 20: Filter 22: Air intake 24: Air intake duct 24b: Air intake duct 26: Upstream end 28: Sound absorbing material 30a: Air duct 30b: Air duct

Claims (12)

A hand drying device that blows air on a user's hand to dry it,
A blower that blows out air;
A housing containing the blower;
The front side wall formed by the front side member of the housing and the back side wall formed by the back side member face each other so that a space into which a user's hand is inserted is formed. A hand drying chamber which is erected with respect to the upper surface of the housing and has openings connected to the front side wall and the rear side wall;
A first nozzle that is provided in the back side member and blows out the air blown from the blower into the hand drying chamber;
A second nozzle that is provided in the front side member and blows out the air blown from the blower into the hand drying chamber with a larger air volume than the first nozzle;
A swirl in which air blown from the second nozzle flows along at least one of the front side member and the rear side member so as to cross between the front side wall and the rear side wall after flowing along the bottom wall. A hand-drying device comprising wind direction regulating means for adjusting a traveling direction so as to form a flow. The wind direction regulating means is
The traveling direction of the air blown out from the second nozzle and traveling toward the rear side wall is adjusted so as to be directed toward the front side wall, and the air directed as a result of the adjustment passes from the front side wall through the bottom wall. The hand dryer according to claim 1, wherein a swirl flow that flows toward the front side wall again after flowing along the back side wall is generated. The wind direction regulating means has a regulating wall provided at a position lower than the height corresponding to the second nozzle on the back side wall,
While the wall surface of the back side wall is formed to connect the bottom wall from the opening,
The hand dryer according to claim 2, wherein the restriction wall surface of the restriction wall extends so as to intersect with the wall surface of the back side wall and faces the opening side. The regulation wall has a sub regulation wall that intersects the regulation wall,
The hand dryer according to claim 3, wherein the sub-regulating wall surface extends so as to intersect with the wall surface of the back side wall, and is disposed to face the bottom wall side. The wall surface of the back side wall is constituted by a first wall surface extending from the opening to the restriction wall and a second wall surface extending from the restriction wall to the bottom wall,
The concave portion is formed such that the first wall surface serves as a bottom surface and the restriction wall surface serves as a side surface, and the side surface facing the side surface of the restriction wall surface is formed on the opening side. 3. The hand drying apparatus according to 3. The wind direction regulating means is
The direction of the air blown out from the second nozzle and traveling toward the back side wall is made to follow the back side wall, and as a result, the air directed toward the bottom wall passes through the bottom wall to the front side wall. The hand dryer according to claim 1, wherein a swirl flow that flows toward the back side wall is generated again after flowing along. The wind direction regulating means has a regulating wall provided at a position lower than a height at which the second nozzle is provided on the front side wall,
While the wall surface of the front side wall is formed so as to connect the bottom wall from the opening,
The hand dryer according to claim 6, wherein the restriction wall surface of the restriction wall extends so as to intersect with the wall surface of the front side wall and faces the bottom wall side.   The distance between the regulation wall and the bottom wall is arranged so as to be substantially the same as the distance between the front side wall and the back side wall. The hand dryer according to item 1. Between the front side wall and the back side wall, a side member having a vent is provided,
The said side member is equipped with the adjustment means which adjusts the advancing direction of the air which flows toward the said front side wall from the said back side wall among the air discharged | emitted from the said vent hole. The hand-drying apparatus of Claim 1.   The adjustment means protrudes from the side member toward the hand drying chamber so that the air flowing from the rear side wall toward the front side wall is in contact with the peripheral edge of the vent hole on the rear side wall side. The hand dryer according to claim 9, wherein the hand dryer is formed.   11. The vent is a slit formed between the front side wall and the adjusting means and in a direction perpendicular to the front side member and / or the back side member. The hand drying apparatus as described in.   The adjusting means is a louver attached to the vent and changing a traveling direction of air flowing from the back side wall toward the front side wall so as to flow from the front side wall toward the back side wall. The hand dryer according to claim 9.

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