JP6501871B2 - Hand dryer - Google Patents

Description

  The present invention relates to a hand dryer for drying a hand wet with water after the user has hand-washed in a bathroom, washroom, hand-washing place or the like.

  As a conventional hand dryer, for example, Patent Document 1 discloses a drying processing space in which a hand can be inserted and removed, a jet outlet for blowing high-speed air, and a water receiving unit for collecting water droplets blown off by a high-speed air flow from the jet outlet. And a hand dryer with and is described.

  Further, for example, Patent Document 2 includes a drying processing space in which a hand can be inserted and removed, a jet outlet for blowing a high-speed air flow, and a water receiving unit for collecting water droplets blown off by the high-speed air flow from the jet outlet. Position the spout or the water receiving part so that the water receiving part is positioned in the direction of the high speed air flow blown out from the spout at the start of operation and the water receptacle is not positioned in the direction of the high speed air flow spouted from the spout over time. A hand dryer that changes is described. In this hand dryer, most of the water droplets attached to the hand are blown off by the high-speed air flow in the first drying process starting from the start of operation, and the water on the surface of the hand is evaporated in the second drying process. In the first drying process, the water receiving portion is at a position on the extension of the direction of the high-speed air flow blown out from the spout, and the water receiving portion receives the water droplets blown from the hand. Also, in the second drying process, there are almost no water droplets blown off from the hand and only the water that is wet on the surface of the hand is evaporated, so there is no need to receive water at the water receiving portion. Therefore, in the second drying process, the position of the spout or the water receiving portion is changed so that the water receiving portion is not located on the extension of the direction of the high speed air flow from the spout, and the high speed air flow from the spout and the water The occurrence of noise was greatly reduced by not directly colliding with the receiving part.

Unexamined-Japanese-Patent No. 2004-290529 (Paragraph "0017", FIG. 2, FIG. 5) JP, 2004-321485, A ("claim 1", paragraph "0012"-"0013", Drawing 1)

  However, in the conventional hand dryer described in Patent Document 1, since the water receiving portion is in the direction of the high-speed air flow blown out from the spout, the air flow which did not reach the hand hits the water receiving portion without much attenuation of the wind speed. And there is a problem that noise is generated.

  Further, even in the conventional hand dryer described in Patent Document 2, in the first drying process from the start of operation, in order to receive the water droplets blown from the hand, the direction of the high-speed air flow from the spout is extended. Since the water receiver is located, as in the case of Patent Document 1, there is a problem that the velocity of the high-speed air flow which did not reach the hand hits the water receiver without much attenuation, and noise is generated.

  The present invention has been made to solve the problems as described above, and the water receiving section receives a water droplet peeled off from the hand by the air flow blown out from the jet outlet, and the air flow blown out from the jet outlet It is an object of the present invention to reduce the direct collision between the water and the water receiver, and to obtain a hand dryer in which the noise during use generated due to the collision is reduced.

  The hand dryer according to claim 1 of the present invention receives the jet nozzle for blowing the air flow toward the drying processing space and the water droplets blown from the hand in the drying processing space by the air flow blown out from the jet nozzle. The water receiver and the jet outlet do not face each other while the air flow is blown out from the jet outlet.

  The hand dryer according to claim 2 according to the present invention receives the jet nozzle for blowing the air flow toward the drying processing space, and the water droplets blown from the hand in the drying processing space by the air flow blown out from the jet outlet. A water receiver is provided, and the water receiver is not located on the extension of the blowout direction of the jet while the air flow is blown out from the jet.

  In the hand dryer according to the third aspect of the present invention, the jet dryer for blowing the air flow toward the drying processing space and the water droplets blown from the hand in the drying processing space by the air flow blown out from the jet nozzle are received. The water receiver is not provided on the extension of the central axis of the jet hole of the jet while the air flow is blown out from the jet.

  According to the present invention, a water receiving portion is provided that efficiently receives water droplets separated from the hand and reduces direct collision with the air flow blown out from the jet, thereby efficiently collecting water droplets and reducing noise. A compatible hand dryer can be obtained.

The perspective view of the hand dryer shown in Embodiment 1 of this invention Right side view of hand dryer shown in Embodiment 1 of the present invention Right side cross-sectional view of hand dryer shown in Embodiment 1 of the present invention It is the hand dryer shown in Embodiment 1 of this invention, and the expanded sectional view of the jet nozzle in FIG. 3 Explanatory drawing which shows the state which the user is using by the hand dryer shown in Embodiment 1 of this invention A right side view showing another example of the hand dryer shown in Embodiment 1 of the present invention A right side view showing another example of the hand dryer shown in Embodiment 1 of the present invention The hand dryer shown in Embodiment 1 of this invention WHEREIN: The expanded sectional view which expanded the right side surface cross section of the jet nozzle in FIG. The hand dryer shown in Embodiment 1 of this invention WHEREIN: The expanded sectional view which expanded the right side cross section of the jet nozzle in FIG. The right side view of the hand dryer shown in Embodiment 2 of this invention The perspective view of the hand dryer shown in Embodiment 2 of this invention

Embodiment 1
The first embodiment is a hand dryer attachable to a wall. 1 to 3 show a hand drier according to a first embodiment of the present invention. FIG. 1 is a perspective view showing the appearance of the hand drier, FIG. 2 is a right side view, and FIG. First, the longitudinal direction, the lateral direction and the vertical direction described in the first embodiment will be defined. In the front-rear direction, the front side (user side) of the hand dryer is referred to as "front", and the front side and the opposite side as "rear". With regard to the left-right direction, a user standing in front of the front of the hand dryer looks at the hand dryer, and the right side is "right" and the left side is "left". In the vertical direction, the upper side is "upper" and the lower side is "lower".

In FIGS. 1 to 3, the casing 1 forms the upper shell of the hand dryer. Below the casing 1, a drying processing space 3 provided with a drying processing space inlet 3a in the front is provided. The drying processing space 3 is a space in which the front and left and right sides are open and a hand can be freely inserted and removed. The water receiving portion 4 is connected to the lower surface 1a of the casing 1 and is connected to the lower end of the water receiving upper portion 4a and the lower end of the water receiving upper portion 4a extending downward from the lower surface 1a. The lower portion 4b and the water receiving upper portion 4a and the water receiving lower portion 4b are configured by a surface-shaped barrier structure 4c which extends upward from the respective end edges. And the water receiving upper part 4a, the water receiving lower part 4b, and the barrier construction 4c are integrally formed. During use, the water droplets blown from the hand inserted into the drying processing space 3 are received by the upper portion 4a and the lower portion 4b of the water receiving portion 4, and received by the upper portion 4a and the lower portion 4b. It serves as a weir so that the water does not flow out of the end of the water receiving upper part 4a and the water receiving lower part 4b by the barrier construction 4c. The positional relationship between the drying processing space 3 and the water receiving portion 4 is such that the water receiving upper portion 4 a is provided at the back (rear) of the drying processing space 3, and the water receiving lower portion 4 b is provided in a part below the drying processing space 3. Is provided. Therefore, the drying processing space 3 is partially surrounded by the lower surface 1 a of the casing 1 and the water receiving portion 4, and the other is a space opened to the outside.

  Further, the water receiving lower portion 4b is slightly inclined forward and downward, and the drainage port 6 is provided at the lowermost portion thereof. Below the water receiving lower portion 4b, a drain container 7 having an open container structure for storing water dropped from the drainage port 6 is removably attached to the water receiving lower portion 4b of the water receiving portion 4.

  Near the end on the front side of the lower surface 1 a of the casing 1, a jet port 10 is provided and protrudes downward from the lower surface 1 a. Further, intake ports 8 are provided on both left and right side surfaces of the casing 1. Further, an air passage 5a and an air passage 5b are provided in the casing 1 for communicating the air inlet 8 with the jet outlet 10, and a high pressure air flow generating high pressure air flow between the air passage 5a and the air passage 5b. Device 9 is incorporated.

  The spout 10 opens downward along the vertical direction. The positional relationship between the spout 10 and the water receiving portion 4 will be described. The water receiving upper part 4a, the water receiving lower part 4b, and the wall protection structure 4c are all shifted rearward in the front-rear direction with respect to the position on the extension of the blowout direction of the jet nozzle 10 (the blowout direction of high-speed air flow) . That is, the extension line extending the blowout direction of the spout 10 and the water receiving portion 4 do not intersect, and the water receiving portion 4 is not positioned at the extension on the spouting direction of the spout 10 and is mutually offset. It is in a relationship. Here, the blowout direction of the spout 10 means the direction in which the high speed air flow is spouted from the spout 10, and is the same as the direction of the air flow immediately after being spouted from the spout 10.

  FIG. 4 is an enlarged side sectional view of the jet nozzle 10 in FIG. The ejection port 10a is a narrow passage through which the air flow blown out from the ejection port 10 passes, and is narrowed from the upstream side to the downstream side (outlet) of the passing air flow. The inner wall 10b and the inner wall 10c are inner walls of the jet holes 10a opposed in the front-rear direction, in a side cross section obtained by cutting the jet holes 10a of the jet nozzle 10 parallel to a plane extending in the front-rear direction and the vertical direction. As shown in FIG. 4, a central line A is a linear line obtained by connecting points at which the distances to the inner wall 10b and the inner wall 10c are substantially equal to each other through the inner wall 10b and the inner wall 10c. The water receiving upper portion 4a, the water receiving lower portion 4b, and the wall protection structure 4c are all shifted rearward in the front-rear direction with respect to the position on the extension of the central axis A of the jet hole 10a.

  And the opening part which is an opening end by the side of the outlet of jet nozzle 10a of jet nozzle 10 does not face directly to water receiving part 4, does not face, and it has shifted in the direction of order. Therefore, when the hand dryer is attached to the wall of a room such as a toilet, the opening of the spout 10 faces the floor surface of the room and faces it, and the spouting direction of the spout 10 faces the floor surface There is. That is, when projected along the vertical direction, which is the blow-off direction of the high-speed air flow, the position of the opening of the jet 10 and the position of the water receiving portion 4 do not overlap, and the water is received more than the opening of the jet 10 The part 4 is located behind the back.

  Next, the flow of air and the flow of water droplets when the hand dryer operates will be described. FIG. 5 is an explanatory view showing a state in which the user is using the hand dryer of the first embodiment. As shown in FIG. 5, the hand dryer of the first embodiment is installed on a wall 50 of a room such as a toilet. When the user stands in front of the front of the hand dryer and inserts the wet hand from the drying processing space inlet 3a into the drying processing space 3, a hand detection sensor (FIG. (Not shown) detects a hand. Then, the high pressure air flow generator 9 is operated by hand detection of a hand detection sensor (not shown), and external air is sucked into the air passage 5a from the air inlet 8. The sucked air is converted into a high pressure air stream by a high pressure air stream generator 9. Then, the converted high-pressure air flow passes through the air passage 5b, is converted into a high-speed air flow at the spout 10, and is vertically directed from the spout 10 to the drying processing space 3 as a high-speed air flow of 60 m / s or more. It is spouted downward. With regard to the speed of the high-speed air flow, the jet noise generated from the spout 10 also increases as the speed of the high-speed air flow increases. However, when priority is given to shortening the drying time over increase of jet noise, The velocity of the high-speed air flow may be 100 m / s or more, more preferably 150 m / s or more.

  The hand dryer is installed so that the drying processing space 3 is at a lower position than the user's shoulder so that the hand can be easily inserted, so the hand inserted from the front into the drying processing space 3 naturally comes from the wrist. It is inclined so that the position of the fingertip is lowered, and it is in a posture to be directed backward and downward (oblique direction between the backward and downward). Then, the high-speed air flow blown downward in the vertical direction from the jet nozzle 10 collides at an inclined angle with the hand inserted obliquely toward the rear and downward. As a result, most of the collided high-speed air flow changes to an air flow that travels along the hand toward the fingertip, that is, an air flow that is directed obliquely backward and downward. Then, there is a water receiving portion 4 in the direction of the obliquely lower rear, and an air flow directed obliquely downward to the rear flows toward the water receiving portion 4. In addition, the water adhering to the hand is also blown off by the air flow colliding with the hand, and is blown off toward the water receiving portion 4 by the air flow which is directed rearward and obliquely downward. The water droplets blown toward the water receiver 4 are received by the water receiver 4, flow down the surface of the water receiver 4 by their own weight, and are accommodated in the drain container 7 through the drainage port 6.

  The spout 10 has a slot-like opening elongated in the left-right direction, and the high-speed air flow blown out from the spout 10 is elongated and formed in the left-right direction. Since the high-speed air flow blown out from the spout 10 is formed with a sufficient width with respect to the width of the inserted hand in the lateral direction, the width size of the inserted hand and the width of the inserted hand It is considered that the high-speed air flow strikes the inserted hand sufficiently without being influenced by the position. The water adhering to the hand is separated from the hand and blown off by the high velocity air flow blown out from the spout 10. Then, when the high-speed air flow is blown out from the spout 10, the user is slowly pulling out the hand inserted in the drying processing space 3 so that the surface of the inserted hand from the spout 10 The collision position of the high-speed air flow gradually moves from the wrist side to the fingertip side, and the entire water of the hand is blown away.

  The length of the jet nozzle 10 in the left-right direction is 80 mm or more if only one hand is dried, and preferably 150 mm or more, more preferably 200 mm or more if both hands are simultaneously dried. Of course, when the spout 10 is divided into a plurality in the left-right direction, the spouts 10 divided into a plurality are collectively considered to be one whole, and considered to be the entire left and right length. Also, the slot width of the jet nozzle 10 is preferably 2 mm or less in order to obtain high-speed air flow.

  On the other hand, in the high-speed air flow blown out from the spout 10, the high-speed air flow which did not collide with the inserted hand does not collide with the hand, so its wind direction is not changed and the wind speed attenuation is small. Go to And since there is no water receiving part 4 in the advancing direction, it passes near the water receiving part 4 without colliding with the water receiving part 4, and flows downward to the floor surface in the vertical direction as it is.

  According to the hand dryer of the above configuration, all of the water receiving portion 4, that is, the water receiving upper portion 4a, the water receiving lower portion 4b, and the barrier construction 4c are in the blowout direction of the jet nozzle 10 (the blowout direction of high-speed air flow). It is shifted rearward in the front-rear direction than the extended position. And the extension line which extended the blowing direction of the spout 10 and the water receiving part 4 do not intersect, the water receiving part 4 is not located at the position on the extension of the blowing direction of the spout 10, it is shifted backward doing. And the water receiving part 4 is shifted behind in the front-back direction from the position on the extension of the central axis A of the ejection port 10a. And the opening part which is an opening end by the side of the outlet of jet nozzle 10a of jet nozzle 10 does not face directly to water receiving part 4, does not face, and it has shifted in the direction of order.

  Therefore, in the high speed air flow blown out from the spout 10, the high speed air flow which does not collide with the inserted hand and the wind direction does not change (for example, the high speed located outside in the lateral direction than the position of the inserted hand) Since the water receiving part 4 is not located on the traveling direction of the air flow, the high speed air flow which did not collide with the hand passes near the front of the water receiving part 4 without almost colliding with the water receiving part 4 Do. As described above, in the high-speed air flow blown out from the spout 10, the high-speed air flow that did not collide with the hand does not directly collide with the water receiving portion 4, so the high-speed air flow collides with the water receiving portion 4. The generated noise can be suppressed, and the noise when using the hand dryer can be reduced. In particular, the high-speed air flow that did not collide with the hand and the wind direction did not change does not attenuate the wind speed due to the collision and maintains a high-speed state, so a collision with the water receiving part 4 generates a noticeable noise. However, noise can be effectively reduced by avoiding a direct collision with the water receiver 4.

  On the other hand, in the high-speed air stream blown downward from the spout 10 in the vertical direction, the high-speed air stream colliding with the inserted hand changes its wind direction due to the collision, and the rear diagonal advances along the hand toward the fingertip It becomes an air flow going downward. The water droplets separated from the hand due to the collision with the high-speed air flow are carried by the wind directed rearward and obliquely downward, blown away toward the water receiving unit 4, and received by the water receiving unit 4. Thus, even if the opening of the spout 10 and the water receiving portion 4 do not face each other, and even if the water receiving portion 4 is not disposed at the position on the extension of the central axis A, the spout 10 Even if the water receiving part 4 is not disposed at a position on the extension direction of the blowout direction, since the water receiving part 4 is disposed on the direction in which the water droplets are blown, the water receiving part 4 It can be effectively received and collected in the drain container 7, and the floor will not be wetted or soiled.

  Therefore, according to the hand dryer of the present invention, the water receiving portion 4 effectively receives the water droplets flung from the hand, and the high speed air flow and the water receiving portion 4 did not contribute to the drying of the hand without colliding with the hand. By preventing the collision of the water directly with each other, it is possible to reduce the noise generated by the collision of the water receiving portion 4 with the high speed air flow without impairing the ability of the water receiving portion 4 to collect water droplets. In other words, the water receiving unit 4 can have a rough selectivity that it can receive the water droplets flung from the hand and hardly receive the high-speed air flow blown out from the spout 10 directly. It is possible to achieve both the recovery of water droplets and the reduction of noise.

Further, in the hand dryer, the hand is removed from the drying space 3 hand detecting sensor (not shown) by a high pressure airflow generation device 9 is stopped automatically, balloon stops the high-speed air flow from the spout 10 Be done. Although it is necessary to stop high-speed air flow after applying high-speed air flow reliably to the fingertip of the inserted hand in order to ensure drying to the fingertip, the position of the fingertip is detected by a hand detection sensor (not shown). It is difficult to detect correctly. Therefore, generally, after detecting that the hand is removed from the drying processing space 3 by a hand detection sensor (not shown), the high speed air flow is continued for about 0.5 to 2 seconds as it is, and then By providing the delay operation of stopping the high speed air flow blow, the high speed air flow is reliably applied to the fingertip and then the high speed air flow blow is stopped.

  In such a delay operation, after the hand is removed from the drying processing space 3, a state in which the high-speed air flow continues to blow from the spout 10 in a state where the hand is not inserted into the drying processing space 3 occurs. Even after the drying process is completed, the noise associated with the operation of the hand dryer will continue for a while. The user can easily tolerate the noise during the drying process associated with his operation, but the noise after the drying is not directly related to the user's drying process, so the noise generation is about 0.5 to 2 seconds. Even for a short time it is unacceptable and feels very unpleasant.

  However, in the present invention, even if a state in which the high speed air flow is blown out from the spout 10 in a state where the hand is not inserted into the drying processing space 3 is provided by providing the delay operation described above, the high speed air flow is directly Since it does not collide with the water receiver 4, it is possible for the user to reduce unpleasant noise that is not directly related to the drying process.

  In the first embodiment, the blowout direction of the high-speed air flow of the spout 10 is directed downward along the vertical direction, but the discharge direction of the high-speed air flow of the spout 10 is limited thereto. It may be an angle inclined to any one of front, rear, left and right as long as it is downward. For example, FIGS. 6 and 7 are side views showing another example of the blowout direction of the high-speed air flow of the jet nozzle 10 in the hand dryer of Embodiment 1, and FIG. 8 is a partial view of the jet nozzle 10 in FIG. FIG. 9 is a side cross-sectional view in which the jet nozzle 10 in FIG. 7 is partially enlarged. 6 and 8, the blowout direction of the spout 10 is directed forward and downward with respect to the vertical direction (diagonal direction between the front and the lower), and in FIGS. 7 and 9, the blowout direction of the spout 10 Is directed obliquely backward downward (diagonal direction between backward and downward) with respect to the vertical direction.

  In the hand dryer shown in FIGS. 6, 7, 8 and 9, the above-described effects are obtained, and further, in FIGS. 6 and 8, the blowout direction of the jet nozzle 10 is obliquely lower forward with respect to the vertical direction ( Since it is directed in the oblique direction between the front and the vertically downward), the size in the front-rear direction of the drying processing space 3 can be larger than the size in the front-rear direction of the hand dryer. Therefore, the size in the front-rear direction of the hand dryer can be reduced while securing the size in the front-rear direction of the drying processing space 3 sufficiently for the hand to be inserted. Moreover, in the hand dryer of FIG. 7 and FIG. 9, the return of the wind to a user can be reduced further.

  In the first embodiment, the distance L1 between the front end and the rear end of the lower surface 1a of the casing 1 in the front-rear direction, the front end of the water receiving portion 4 and the rear end of the lower surface 1a of the casing 1 In the example shown in FIG. 9, the water receiving portion 4 is disposed on the front side of the half of the distance L1 so as to satisfy L2> 1/2 × L1. The blow-off direction of the jet nozzle 10 is further angled rearward to satisfy L2 ≦ 1/2 × L1, and a half of the distance L1 between the front end and the rear end of the lower surface 1a of the casing 1 If the water receiving part 4 is arrange | positioned behind a position, the protrusion length to the front of the water receiving part 4 will become still shorter. Therefore, when the user inserts his / her hand into the drying processing space 3, the water receiving portion 4 is difficult to see by the casing 1 when viewed by the user. It can also reduce the psychological pressure at the time of manual insertion.

Second Embodiment
The second embodiment is a hand dryer attachable to a wall. FIG. 10 is a right side view showing a state in which the hand dryer shown in Embodiment 2 of the present invention is attached to a wall 50. As shown in FIG. FIG. 11 is a perspective view showing a state in which the hand dryer shown in Embodiment 2 is attached to a wall 50. In FIG. 10 and FIG. 11, the casing 1 is provided with the intake port 8, the air passage 5a, the air passage 5b, the high pressure air flow generating device 9 and the jet nozzle 10 as in the first embodiment. The illustration of the air passage 5a, the air passage 5b and the high pressure air flow generator 9 provided inside the casing 1 is omitted. The casing 1, the intake port 8, the air passage 5a, the air passage 5b, the high-pressure air flow generating device 9 and the jet outlet 10 are collectively referred to as a blower 100 having a single blower function. In the second embodiment, the casing 1 and the water receiver 4 are independent of each other. That is, the blower 100 and the water receiver 4 are independent of each other. Therefore, the blower 100 and the water receiver 4 are attached to the wall 50 to which the hand dryer is attached independently of each other. The water receiver 4 is disposed below the blower 100. Below the water receiving unit 4, a drain container 7 for containing the water received by the water receiving unit 4 is attached to the water receiving unit 4 in a removable manner. The second embodiment differs from the first embodiment only in that the blower unit 100 and the water receiving unit 4 are independent of each other, and the other configuration is the same as that of the first embodiment.

  According to the hand drier having the above configuration, the same effect as that of the first embodiment can be obtained, and the position of the water receiver 4 can be adjusted and installed according to the environment to which the hand drier is attached and the user.

  The arrows shown in FIGS. 3 to 10 indicate the direction of the air flow (except for arrows representing the dimensions of L1 and L2 in FIG. 7).

  DESCRIPTION OF SYMBOLS 1 casing, 1a lower surface, 3 drying processing space, 3a drying processing space inlet, 4 water receiving part, 4a water receiving upper part, 4b water receiving lower part, 4c wall protection structure, 5a, 5b air passage, 6 drainage port, 7 drain container, 8 air inlet, 9 high pressure air flow generator, 10 jets, 10a jet holes, 10b, 10c inner wall, 50 walls, 100 blowers.

Claims (7)

A jet nozzle for blowing an air flow toward the drying processing space, and a position which is not directly opposed to the jet nozzle are fixed, and the air flow blown out from the jet nozzle is used to blow water droplets blown from the hand in the drying processing space. hand dryer to a water receiving portion, wherein the drying space is open at least to the front, the water receiving portion and being located rearwardly of said spout receiving. The nozzle is fixed at a position not on the extension of the blowout direction of the jet outlet and the jet outlet for blowing the air flow toward the dry treatment space, and blown away from the hand in the dry treatment space by the air flow blown out from the jet outlet. and a water receiving portion for receiving the water droplets, the drying process space is open at least to the front, hand the water receiving portion and being located behind the extension of the blowing direction of the jetting port Hairdryer. The nozzle is fixed at a position not on the extension of the central axis of the jet hole, and the jet hole for blowing the air flow from the jet hole toward the drying treatment space, and is in the drying treatment space by the air flow blown out from the jet hole. And a water receiving portion for receiving water droplets blown from a hand, wherein the drying processing space is at least opened forward, and the water receiving portion is located rearward of the extension of the central axis of the jet hole of the jet port . Hand dryer characterized by.   The jet nozzle is provided in a casing forming an outer shell, and in the front-rear direction, the water receiving portion is disposed rearward of a half position between the front end and the rear end of the casing. The hand dryer according to any one of claims 1 to 3, characterized in that A jet nozzle for blowing an air flow toward the drying processing space, and a position which is not directly opposed to the jet nozzle are fixed, and the air flow blown out from the jet nozzle is used to blow water droplets blown from the hand in the drying processing space. A water receiving portion to be received, the spout is provided in a casing forming an outer shell, and the water receiving portion is provided at a half position between the front end and the rear end of the casing in the front-rear direction A hand dryer characterized in that it is disposed on the rear side. The nozzle is fixed at a position not on the extension of the blowout direction of the jet outlet and the jet outlet for blowing the air flow toward the dry treatment space, and blown away from the hand in the dry treatment space by the air flow blown out from the jet outlet. A water receiving portion for receiving the dropped water droplets, the spout is provided in a casing forming an outer shell, and the water receiving portion is 1/1 between the front end and the rear end of the casing in the front-rear direction. A hand dryer characterized in that it is disposed behind the position 2. The nozzle is fixed at a position not on the extension of the central axis of the jet hole, and the jet hole for blowing the air flow from the jet hole toward the drying treatment space, and is in the drying treatment space by the air flow blown out from the jet hole. And a water receiving portion for receiving water droplets blown from a hand, wherein the jet port is provided in a casing forming an outer shell, and in the front and rear direction, the water receiving portion is between the front end and the rear end of the casing The hand dryer characterized in that it is disposed behind the position of 1/2 of.

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