WO2013190792A1 - Hand dryer - Google Patents

Hand dryer Download PDF

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Publication number
WO2013190792A1
WO2013190792A1 PCT/JP2013/003594 JP2013003594W WO2013190792A1 WO 2013190792 A1 WO2013190792 A1 WO 2013190792A1 JP 2013003594 W JP2013003594 W JP 2013003594W WO 2013190792 A1 WO2013190792 A1 WO 2013190792A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
hand
wall surface
drying chamber
air
Prior art date
Application number
PCT/JP2013/003594
Other languages
French (fr)
Japanese (ja)
Inventor
孝 古山
幸司 新崎
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2012137514 priority Critical
Priority to JP2012-137514 priority
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2013190792A1 publication Critical patent/WO2013190792A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47KSANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00Body-drying implements; Toilet paper; Holders therefor
    • A47K10/48Drying by means of hot air

Abstract

A hand dryer is provided with a drying chamber (2), a nozzle, and an electric air blower. The drying chamber (2) is configured from four wall surfaces, that is, from a front wall surface (2a), a rear wall surface (2b), and two inner wall surfaces (2c, 2d). The nozzle comprises a front nozzle (4a) and a rear nozzle (4b). The rear nozzle (4b) is provided to a protrusion (5) protruding from the rear wall surface (2b). The protrusion (5) is provided, separated from the two inner wall surfaces (2c, 2d) with a space (7) therebetween.

Description

Hand dryer

The present invention relates to a hand dryer.

The hand dryer is used in a washroom, toilet, kitchen, etc. to dry wet hands by washing. A conventional hand drying apparatus has a drying chamber provided with a hand insertion opening at the top of the main body. In the drying chamber, there are provided a blowing nozzle on the wall surface side (blowing nozzle on the back side of the hand) and a blowing nozzle on the near side (blowing nozzle on the palm side). The side of the drying chamber is open. Then, when the hand is inserted into the drying chamber, air is blown out from both sides of the hand from the blowing nozzle, and water droplets are blown off to be dried. At this time, the air after hitting the hand is released from the opened side surface to the outside of the hand dryer (for example, see Patent Document 1).

In such a conventional hand drying apparatus, the position of the outlet of the outlet nozzle is on the same side of the front side and the back side of the drying chamber on both the palm side and the back side of the hand. Therefore, the drying space is narrow, and the back side of the hand is likely to hit the back side of the drying chamber when inserting and removing the hand.

Also, it is easy for water droplets to jump out of the air discharged from the side of the drying chamber. Therefore, a hand dryer that closes the side of the drying chamber has also been developed. However, in such a hand-drying device with the side closed, the air blown into the drying chamber escapes upward along the inner surface of the drying chamber, so that the scattered water adheres to the wall surface. .

JP-A-10-75915

The hand drying apparatus of the present invention has a hand insertion port that opens upward toward the outside, a drying chamber in which a hand is inserted and removed from the hand insertion port, a nozzle that sends air toward the drying chamber, and air from the nozzle And an electric blower that sends out the air. The drying chamber is formed of four wall surfaces, two inner wall surfaces that connect the near wall surface, the far wall surface, and the near wall surface and the far wall surface. The nozzle is composed of a front nozzle and a back nozzle. The near nozzle is provided on the near wall surface. The back nozzle is provided at a protruding portion protruding from the wall surface on the back side. The protruding portion is provided with a space from each of the two inner wall surfaces.

In such a hand dryer, the air blown out from the nozzle hits the hand and then reverses at the bottom of the drying chamber and rises along the inner wall. Alternatively, the air blown out from the nozzle reverses when it hits the hand, moves toward the inner wall, and merges with the rising air. Therefore, the air rising along the wall surface on the back side is blocked by the protrusion provided with the back nozzle, and the flow of air to the hand insertion port side is blocked. As a result, water droplets do not adhere to the wall surface where the hand dryer is installed.

FIG. 1 is a perspective view of a hand dryer according to an embodiment of the present invention. FIG. 2 is a side view of the hand dryer. FIG. 3 is a top view of the hand dryer. FIG. 4 is a front view of the same hand dryer. FIG. 5 is a partial perspective view of the upper part of the hand dryer. FIG. 6 is a side sectional view and an enlarged view of a nozzle portion of the hand dryer. FIG. 7 is a front view of the nozzle portion of the hand dryer.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
FIG. 1 is a perspective view of a hand dryer according to an embodiment of the present invention, and FIG. 2 is a side view of the hand dryer. As shown in FIGS. 1 and 2, the hand drying apparatus of the present embodiment has a drying chamber 2, an electric blower 3, and a nozzle 4. Here, the drying chamber 2 has a hand insertion port 1 that opens toward the upper outside 21. The electric blower 3 sends air 22 to the nozzle 4. The nozzle 4 ejects air 22 toward the inside of the drying chamber 2. A hand is inserted and removed at the hand insertion port 1 of the drying chamber 2. The inserted hand is dried by the high-pressure air 22 of 0.5 kPa to 15 kPa blown out inside the drying chamber 2. Moreover, the hand dryer is attached to the wall surface of the bathroom, etc., and the user stands on the front surface (the direction opposite to the wall surface direction) and inserts the hand.

As shown in FIG. 2, the drying chamber 2 is provided with a nozzle 4 that blows out air 22 sent from the electric blower 3 to the drying chamber 2. The nozzle 4 includes a front nozzle 4a provided on a wall surface 2a on the front side of the drying chamber 2 and a back nozzle 4b.

Further, as shown in FIG. 1, the drying chamber 2 includes a front wall surface 2a (a front wall surface of the drying chamber 2), a back wall surface 2b (a rear wall surface of the drying chamber 2), a front wall surface 2a, and a back wall. It is formed from four wall surfaces of two inner wall surfaces 2c and 2d that connect the wall surface 2b.

FIG. 3 is a top view of the hand dryer according to the embodiment of the present invention. As shown in FIG. 3, a near nozzle 4 a is provided on the near wall surface 2 a of the drying chamber 2. The front nozzle 4a having a plurality of holes is integrated with the wall surface 2a on the front side. Further, a protruding portion 5 provided with a back nozzle 4b having a plurality of holes is provided on the back wall surface 2b so as to protrude into the drying chamber 2. The protrusion 5 has a substantially triangular shape in vertical section. The outlet of the back nozzle 4 b of the protrusion 5 is provided at the top of the protrusion 5 and is located closer to the user than the wall surface 2 b on the back side of the drying chamber 2.

The height of the protrusion 5, that is, the height from the back wall surface 2 b to the top of the protrusion 5 is 5 mm-30 mm, preferably 20 mm. If the height of the protruding portion 5 is secured to about 5 mm, an effect of blocking the airflow rising along the inner wall surface 2b is produced. On the other hand, as shown in FIGS. 2 and 3, the height of the protruding portion 5 is increased, so that a space in the depth direction is secured on the bottom surface 6 side of the drying chamber 2 relative to the protruding portion 5. Therefore, even if a hand is inserted into the drying chamber 2, it is difficult for the hand to touch the drying chamber 2 in the drying chamber 2. However, as the height of the protruding portion 5 increases, the hand insertion port 1 needs to be enlarged, and the hand dryer becomes large. Therefore, the size of the hand dryer is suppressed by setting the height of the protrusion 5 to 30 mm or less, preferably about 20 mm. That is, the hand dryer is thinned.

FIG. 4 is a front configuration diagram of the hand dryer according to the embodiment of the present invention. The protrusion 5 has a top surface 5b and a left side wall 5c and a right side wall 5d which are side surfaces facing the inner wall surfaces 2c and 2d of the drying chamber 2, respectively. Spaces 7 are respectively provided between the inner wall surface 2c and the left side wall 5c and between the inner wall surface 2d and the right side wall 5d. That is, the protrusion 5 is provided with the space 7 separated from each of the two inner wall surfaces 2c and 2d.

The width of the space 7 is 5 mm to 60 mm, preferably 40 mm. By securing the width of the space 7 of about 5 mm, the air 22 divided into the left and right in the protruding portion 5 escapes upward. On the other hand, the width of the drying chamber 2 is secured by making the width of the space 7 large. Therefore, when the hand is inserted into the drying chamber 2, it is difficult for the hand to touch the inner wall surfaces 2 c and 2 d in the drying chamber 2. However, when the width of the space 7 is increased, the hand insertion port 1 is also increased, and the hand drying device is increased. Therefore, the size of the hand dryer is suppressed by setting the width of the space 7 to 60 mm or less, preferably about 40 mm. That is, the hand dryer is miniaturized.

And as shown in FIG. 2, the near wall 2a and the back wall 2b of the drying chamber 2 are substantially parallel. Moreover, the number of the blower outlets of the front nozzle 4a is made larger than the number of the blower outlets of the back nozzle 4b. That is, the amount of air blown from the back nozzle 4b is smaller than the amount of air blown from the front nozzle 4a.

As shown in FIG. 2, the drying chamber 2 is provided with a hand insertion port 1 at the top, and a hand is inserted downward from the hand insertion port 1. Here, when a hand is inserted through the hand insertion port 1 from a natural working posture without difficulty, it is often inserted with the palm side facing forward (the direction opposite to the wall surface direction). That is, the air 22 blown out from the back nozzle 4b hits the back side of the hand, and the air 22 blown out from the front nozzle 4a hits the palm side.

As shown in FIG. 2, the intake air is sucked into the electric blower 3 through the filter 10 and the suction air passage 11 from the nozzle 4 through the discharge air passage 13 and the discharge air chamber 13 in the airframe 20. Blown out.

As shown in FIG. 1, the drying chamber 2 has a human sensor 14 that detects a hand. When it is detected that a hand has been inserted into the drying chamber 2 from the hand insertion port 1, the operation of the electric blower 3 shown in FIG. 2 is started. Moreover, it detects that the hand was extracted from the drying chamber 2, and the driving | operation of the electric blower 3 is complete | finished.

With this configuration, as shown in FIG. 2, a part of the air 22 blown out from the front nozzle 4a hits the palm and then flows toward the bottom surface 6 of the drying chamber 2. As shown in FIG. 4, the air 22 collides with the bottom surface 6 and then reverses and flows in the direction of the manual insertion port 1, hits the bottom wall 5 e of the protrusion 5, and is on the left side wall 5 c and the right side wall 5 d side of the protrusion 5. Flowing into. For this reason, the air 22 going upward from the protrusion 5 is blocked. At this time, water droplets scattered from the hand are also prevented from scattering upward from the protrusion 5.

Further, as shown in FIG. 2, a part of the air 22 blown out from the back nozzle 4 b hits the back of the hand and reverses and flows in the direction of the wall surface 2 b on the back side of the drying chamber 2. Then, as shown in FIG. 4, the air 22 rises from the bottom surface 6 side and merges with the air 22 that hits the bottom wall 5 e of the protrusion 5, and the left wall 5 c, the right wall 5 d and the space 7 of the protrusion 5 To the outside of the drying chamber 2.

Thus, the protruding portion 5 acts to block the air 22 going upward from the bottom surface 6 side of the drying chamber 2 and allow the air 22 to escape from the space 7. For this reason, water droplets do not adhere to the wall surface on which the hand dryer is installed.

Further, the number of front nozzles 4a shown in FIG. 3 is larger than the number of back nozzles 4b. Therefore, the amount of the air 22 blown out from the front nozzle 4a increases, so that the air 22 flows to the inner wall surface 2b side in the drying chamber 2. Therefore, the air 22 flowing along the inner wall surface 2b shown in FIG. 4 hits the bottom wall 5e of the protrusion 5 and easily escapes from the inner wall surfaces 2c and 2d.

In the present embodiment, the number of front nozzles 4a is larger than the number of back nozzles 4b, and a difference is provided in the amount of air flowing from the nozzles 4. However, even if the hole diameter of the front nozzle 4a is enlarged, or even if the shape is changed to a shape such as a long hole instead of a round hole to provide a difference in the air volume, the effect is not changed.

Further, as shown in FIG. 4, the left side wall 5c and the right side wall 5d of the protrusion 5 are inclined outwardly toward the upper part. That is, the length from the left side wall 5c to the right side wall 5d becomes longer from the lower part to the upper part of the protruding part 5. Therefore, the air 22 that has flowed to the wall surface 2 b on the back side of the drying chamber 2 flows along the slopes of the left side wall 5 c and the right side wall 5 d of the protrusion 5, and is easily directed to the space 7. As a result, the air 22 and water droplets are less blown back on the user and the installed wall surface while the drying time is maintained.

Further, as shown in FIG. 4, the top surface 5b of the protruding portion 5 is inclined upward as it goes from the front to the back. That is, the top surface 5b has an inclination that descends from the inner wall surface 2b. And as shown in FIG. 2, the junction part 5a of the top | upper surface 5b and the inner wall surface 2b is bent. That is, in the joint portion 5a, the top surface 5b and the back wall surface 2b are connected so as to be bent at a predetermined angle of 90 ° to 120 ° so that the momentum of the air 22 is attenuated.

With such a configuration, a part of the air 22 blown out from the back nozzle 4b hits the hand and reverses and flows in the direction of the wall surface 2b on the back side of the drying chamber 2. A part of the air 22 flows along the top surface 5b of the protrusion 5 and hits a bent portion of the joint 5a, so that the direction of the air 22 changes to the upper side of the hand insertion port 1 and the momentum of the air 22 Is attenuated rapidly. As a result, the air 22 and water droplets are further blown back on the installed wall surface while the drying time is maintained.

Further, as shown in FIG. 2, the rear nozzle 4b blows downward from the front nozzle 4a. Therefore, the air 22 from the back nozzle 4b flows below the front nozzle 4a. Thereafter, the air 22 flows downward in the wall surface 2 a on the near side of the drying chamber 2, reverses on the bottom surface 6 of the drying chamber 2, and rises on the wall surface 2 b on the back side of the drying chamber 2. The air 22 is blocked by the bottom wall 5e of the projecting portion 5 and travels outside the drying chamber 2 from the space 7 shown in FIG. That is, when the air 22 blown out from the back nozzle 4b shown in FIG. 2 collides with the front wall surface 2a, the air 22 blows out from the front nozzle 4a and is turned downward. Therefore, the amount of air 22 blown upward from the front wall surface 2a is suppressed. Therefore, the blow back of the air 22 and water droplets to the user is further reduced.

Next, the configuration of the protrusion 5 will be described with reference to FIGS.

5 is a partial perspective view of the upper portion of the hand dryer according to the embodiment of the present invention, FIG. 6 is a side sectional view and an enlarged view of the nozzle portion of the hand dryer, and FIG. 7 is a front view of the nozzle portion of the hand dryer. FIG. As shown in FIGS. 5 and 7, the protrusion 5 is composed of a main body portion having a substantially triangular cross section and a flange 15 projecting to the periphery. And the opening 17 for inserting the protrusion part 5 is provided in the wall surface 2b of the back side. A space for contacting the flange 15 is provided on the back side of the drying chamber 2. Projections 16 for welding are provided on the entire circumference of the flange 15 on the surface of the flange 15 that contacts the drying chamber 2.

As shown in FIG. 6, which is a cross section of the opening 17, the protrusion 5 is inserted into the drying chamber 2 from the opening 17. The protrusion 16 and the back side of the drying chamber 2 are melted and bonded by ultrasonic welding or heat welding, and the protrusion 5 is integrated with the drying chamber 2. In addition, the drying chamber 2 and the protrusion part 5 are formed from resin in order to enable welding.

At that time, in order to prevent the melted resin from jumping out from the opening 17 to the drying chamber 2 side, the distance A from the gap 25 formed between the back wall surface 2b and the protruding portion 5 to the protrusion 16 is set. 0.5 mm or more. In the present embodiment, the distance A is 1.5 mm.

In the present embodiment, two protrusions 16 are provided, but one may be provided depending on the size of the nozzle 4 or the welding range.

The inter-projection distance C is 0.5 mm or more. In the present embodiment, the interprotrusion distance C is 1 mm. The width B of the cross section of the protrusion 16 is 0.2 mm or more, and the height D is 0.2 mm or more. In the present embodiment, the protrusion 16 has a triangular shape having a width B of 0.5 mm and a height D of 1 mm.

Therefore, the disturbance of the air 22 generated when the air 22 collides with the gap 25 and the step between the protrusion 5 and the drying chamber 2 is eliminated. As a result, while the drying time is maintained, the user is further prevented from blowing back the air 22 and water droplets, and leakage of the air 22 from the gap 25 is prevented.

It should be noted that considering the case where the air 22 leaks due to welding variations and there is no welding equipment, the following may be performed. That is, the rib 18 of the protrusion 5 is extended from the flange 15 toward the discharge air chamber 13, and the rib 19 is provided on the discharge air chamber 13 side of the outer periphery of the opening 17. And the protrusion part 5 is inserted toward the drying chamber 2 from the opening 17. Thereafter, the concave portion formed over the entire circumference between the rib 18 and the rib 19 is filled with an adhesive to prevent the air 22 from leaking.

In addition, when a hand is inserted below the protrusion 5 from the drying chamber 2, the back side of the hand is inserted into the space below the protrusion 5. Since a large space is formed below the protrusion 5 in the depth direction, the drying time is maintained, and water droplets adhere to the wall surface on which the hand drying device is installed, and the hand touches the drying chamber 2. Disappear.

The hand drying apparatus of the present invention can be applied to equipment drying equipment using a nozzle, that is, industrial drying applications for drying an object in a short time, in addition to hand drying.

DESCRIPTION OF SYMBOLS 1 Hand insertion port 2 Drying room 2a Front side wall surface 2b Back side wall surface 2c, 2d Inner wall surface 3 Electric blower 4 Nozzle 4a Front nozzle 4b Back nozzle 5 Protrusion part 5a Joint part 5b Top surface 5c Left side wall 5d Right side wall 5e Bottom Wall 6 Bottom surface 7 Space 10 Filter 11 Suction air passage 12 Discharge air passage 13 Discharge air chamber 14 Human sensor 15 Flange 16 Protrusion 17 Openings 18 and 19 Rib 20 Airframe outline 21 External 22 Air 25 Crevice

Claims (6)

  1. A drying chamber having a hand insertion port opened toward the upper outside, and inserting and removing a hand from the hand insertion port;
    A nozzle for ejecting air toward the drying chamber;
    A hand dryer provided with an electric blower for sending the air to the nozzle,
    The drying chamber is formed by four wall surfaces, two inner wall surfaces connecting the near wall surface, the far wall surface, and the near wall surface and the far wall surface;
    The nozzle is composed of a front nozzle and a back nozzle,
    The front nozzle is provided on the front wall surface,
    The back nozzle is provided in a protruding portion protruding from the wall surface on the back side,
    The hand drying device, wherein the protrusion is provided with a space from each of the two inner wall surfaces.
  2. The protrusion has a left side wall and a right side wall facing the two inner wall surfaces, respectively.
    The hand dryer according to claim 1, wherein a length from the left side wall to the right side wall becomes longer from a lower part to an upper part of the protruding part.
  3. The hand-drying device according to claim 1, wherein the protruding portion has a top surface that is inclined downward from the wall surface on the back side.
  4. The hand dryer according to claim 3, wherein the top surface and the back wall are connected at a predetermined angle.
  5. The hand dryer according to claim 1, wherein the back nozzle blows the air downward from the front nozzle.
  6. The hand drying apparatus according to claim 1, wherein the protrusion is joined to the drying chamber by welding.
PCT/JP2013/003594 2012-06-19 2013-06-07 Hand dryer WO2013190792A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2012137514 2012-06-19
JP2012-137514 2012-06-19

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2014520912A JP6260001B2 (en) 2012-06-19 2013-06-07 Hand dryer
CN201380032274.2A CN104379040B (en) 2012-06-19 2013-06-07 Drying apparatus for hands
HK15108170.8A HK1207547A1 (en) 2012-06-19 2015-08-24 Hand dryer

Publications (1)

Publication Number Publication Date
WO2013190792A1 true WO2013190792A1 (en) 2013-12-27

Family

ID=49768407

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/003594 WO2013190792A1 (en) 2012-06-19 2013-06-07 Hand dryer

Country Status (4)

Country Link
JP (1) JP6260001B2 (en)
CN (1) CN104379040B (en)
HK (1) HK1207547A1 (en)
WO (1) WO2013190792A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662977A (en) * 1992-08-25 1994-03-08 Mitsubishi Electric Corp Hand dryer
JPH1075915A (en) * 1996-09-03 1998-03-24 Mitsubishi Electric Corp Hand dryed device and heat storage type air heater
JP2001346715A (en) * 2000-06-12 2001-12-18 Matsushita Seiko Co Ltd Hand dryer
JP2002034843A (en) * 2000-07-31 2002-02-05 Matsushita Electric Ind Co Ltd Hand drier
JP2004261510A (en) * 2003-03-04 2004-09-24 Mitsubishi Electric Corp Hand dryer
JP2009039270A (en) * 2007-08-08 2009-02-26 Panasonic Corp Hand dryer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2434094A (en) * 2006-01-12 2007-07-18 Dyson Technology Ltd Drying apparatus with sound-absorbing material
EP2277424B1 (en) * 2008-04-23 2017-08-02 Mitsubishi Electric Corporation Hand dryer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662977A (en) * 1992-08-25 1994-03-08 Mitsubishi Electric Corp Hand dryer
JPH1075915A (en) * 1996-09-03 1998-03-24 Mitsubishi Electric Corp Hand dryed device and heat storage type air heater
JP2001346715A (en) * 2000-06-12 2001-12-18 Matsushita Seiko Co Ltd Hand dryer
JP2002034843A (en) * 2000-07-31 2002-02-05 Matsushita Electric Ind Co Ltd Hand drier
JP2004261510A (en) * 2003-03-04 2004-09-24 Mitsubishi Electric Corp Hand dryer
JP2009039270A (en) * 2007-08-08 2009-02-26 Panasonic Corp Hand dryer

Also Published As

Publication number Publication date
JPWO2013190792A1 (en) 2016-02-08
JP6260001B2 (en) 2018-01-17
HK1207547A1 (en) 2016-02-05
CN104379040A (en) 2015-02-25
CN104379040B (en) 2017-08-25

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