WO2022045347A1 - Sèche-mains - Google Patents

Sèche-mains Download PDF

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Publication number
WO2022045347A1
WO2022045347A1 PCT/JP2021/031872 JP2021031872W WO2022045347A1 WO 2022045347 A1 WO2022045347 A1 WO 2022045347A1 JP 2021031872 W JP2021031872 W JP 2021031872W WO 2022045347 A1 WO2022045347 A1 WO 2022045347A1
Authority
WO
WIPO (PCT)
Prior art keywords
duct
hose
drying chamber
chamber
blower
Prior art date
Application number
PCT/JP2021/031872
Other languages
English (en)
Japanese (ja)
Inventor
慎吾 吉野
潤 淺見
和宏 小野
秀和 永木
Original Assignee
日本電産株式会社
株式会社Air Labo
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
Application filed by 日本電産株式会社, 株式会社Air Labo filed Critical 日本電産株式会社
Priority to JP2022545764A priority Critical patent/JP7448133B2/ja
Priority to CN202180053616.3A priority patent/CN116096280A/zh
Publication of WO2022045347A1 publication Critical patent/WO2022045347A1/fr
Priority to US18/115,202 priority patent/US20230210321A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/48—Drying by means of hot air

Definitions

  • the present invention relates to a hand dryer.
  • the conventional hand dryer has an opening at the top and has a hand insertion space having a side wall surrounding the hand inserted through the opening.
  • a nozzle for blowing air is arranged on the side wall, and the manual insertion space communicates with a blower chamber in which a high-pressure air generator is arranged via a drainage channel (duct).
  • the air generated by driving the high-pressure air generator is blown out from the nozzle to blow off the moisture adhering to the fingers.
  • the airflow containing the blown water droplets flows through the drainage channel.
  • An object of the present invention is to provide a hand dryer capable of improving the ventilation efficiency in a duct.
  • An exemplary hand dryer of the present invention has a drying chamber, a ventilation chamber, a duct, and a hose.
  • the blower chamber is arranged below the drying chamber in the first direction extending vertically.
  • the duct is a cylinder that connects the lower part of the drying chamber and the ventilation chamber.
  • At least one hose is provided so as to communicate the upper part of the drying chamber and the blower chamber.
  • a drying chamber opening that opens in the first direction and communicates with the outside is configured.
  • the drying chamber surrounds both sides of the second direction orthogonal to the first direction and both sides of the third direction orthogonal to both the first direction and the second direction, and has side walls extending in the first direction.
  • a blower device that generates an air flow from the lower side to the upper side via a hose.
  • the duct has an upper part of the duct, a duct connection portion, and a lower part of the duct.
  • the upper part of the duct communicates with the lower part of the drying chamber and is wide in the second direction.
  • the duct connection portion extends from the lower part of the upper part of the duct in the direction including the third direction component, and is wide in the second direction.
  • the lower part of the duct communicates with the duct connection portion, is arranged below the duct connection portion, and is wide in the second direction.
  • the width of the lower part of the duct in the second direction is 40% or more and 70% or less of the width of the upper part of the duct in the second direction.
  • FIG. 1 is a perspective view of a hand dryer according to the first embodiment of the present invention.
  • FIG. 2 is a perspective view of a hand dryer according to the first embodiment of the present invention.
  • FIG. 3 is a front view of the hand dryer according to the first embodiment of the present invention.
  • FIG. 4 is a side view of the hand dryer according to the first embodiment of the present invention.
  • FIG. 5 is a perspective view of the hand dryer according to the second embodiment of the present invention.
  • FIG. 6 is a side sectional view of the hand dryer according to the second embodiment of the present invention.
  • FIG. 7 is a perspective view showing a part of the hand dryer according to the second embodiment of the present invention.
  • the XYZ coordinate system is shown as a three-dimensional Cartesian coordinate system as appropriate.
  • the Z-axis direction indicates a vertical direction (that is, a vertical direction)
  • the + Z direction is the upper side (opposite the gravity direction)
  • the ⁇ Z direction is the lower side (gravity direction).
  • the Z-axis direction is also the direction in which the side wall 12, which will be described later, extends.
  • the X-axis direction refers to a direction orthogonal to the Z-axis direction, and one direction and the opposite direction thereof are the + X direction and the ⁇ X direction, respectively.
  • the Y-axis direction refers to a direction orthogonal to both the Z-axis direction and the X-axis direction, and one direction and the opposite direction thereof are the + Y direction and the ⁇ Y direction, respectively.
  • this defines the direction only for convenience of explanation, and does not limit the direction at the time of manufacturing and the time of use of the hand dryer 1 according to the present invention. That is, the vertical direction and the vertical direction may be different from each other, and the direction in which the hand dryer 1 is installed can be arbitrarily selected.
  • FIG. 1 and 2 are perspective views of the hand dryer 1 according to the first embodiment of the present invention, and FIG. 2 shows a state in which the cover 70 is removed.
  • 3 and 4 are a front view and a side view of the hand dryer 1 and show a state in which the cover 70 is removed.
  • the hand dryer 1 is installed near the wash basin in the washroom, for example, and is used for drying the hands after washing. Not limited to the washroom, it may be installed in a place where the washed hands and fingers need to be hygienically dried, such as in a hospital or a factory.
  • the hand dryer 1 has a drying chamber 10, a blower chamber 20, a duct 30, hoses 40a and 40b, a blower device 50, a base 60, and a cover 70.
  • the cover 70 has a cylindrical shape with an open upper surface and surrounds the outer surface of the drying chamber 10, the blower chamber 20, the duct 30, the hoses 40a and 40b, and the base 60.
  • the base 60 is formed in a box shape and is fixed to the installation surface of the hand dryer 1.
  • the back surface of the cover 70 may be attached to a wall surface such as a washroom.
  • the drying chamber 10 has a side wall 12, and a drying chamber opening 13 opens at the upper part.
  • the drying chamber opening 13 opens in the first direction (Z direction) and communicates with the outside.
  • a sensor (not shown) for detecting the insertion of a hand is installed in the vicinity of the drying chamber opening 13.
  • the side wall 12 surrounds the hand inserted in the drying chamber opening 13.
  • the side wall 12 has both sides of the second direction (X direction) orthogonal to the first direction (Z direction) and a third direction (Y) orthogonal to both the first direction (Z direction) and the second direction (X direction). It surrounds both sides of the direction) and extends in the first direction (Z direction).
  • the side wall 12 is composed of a front wall 121, a back wall 122, and side walls 123 and 124.
  • the drying chamber opening 13 opens on one side (+ Z direction) of the side wall 12 in the first direction.
  • the inflow port 31a opens on the other side (-Z direction) of the side wall 12 in the first direction.
  • the front wall 121 and the back wall 122 face each other in the third direction (Y direction).
  • the side wall 123 and the side wall 124 face each other in the second direction (X direction).
  • the front wall 121, the back wall 122, and the side walls 123 and 124 extend in the first direction (Z direction).
  • the front wall 121 has an inclined portion 121a.
  • the inclined portion 121a inclines toward one side (+ Y direction) in the third direction toward the other ( ⁇ Z direction) in the first direction.
  • the inclined portion 121a can smoothly guide the air flow in the first direction and the other ( ⁇ Z direction).
  • the air outlet 11 opens in the back wall 122.
  • the front wall 121 also has an outlet (not shown). Air is blown into the drying chamber 10 from each outlet 11 facing the third direction (Y direction).
  • the outlet 11 may be provided on the side walls 123 and 124. Further, the outlet 11 may be provided only on one of the front wall 121 and the back wall 122.
  • the duct 30 has a cylindrical shape that connects the lower part of the drying chamber 10 and the ventilation chamber 20.
  • the duct 30 returns the air flowing from the drying chamber 10 to the blower chamber 20.
  • the duct 30 has a duct upper portion 31, a duct connecting portion 32, a duct lower portion 33, and a water receiving passage 34.
  • the upper part 31 of the duct communicates with the lower part of the drying chamber 10 via the inflow port 31a and is wide in the second direction (X direction).
  • the duct connecting portion 32 extends from the lower portion of the duct upper portion 31 in a direction including the third direction (Y direction) component, and is wide in the second direction (X direction).
  • the duct lower portion 33 communicates with the duct connecting portion 32, is arranged below the duct connecting portion 32, and is wide in the second direction (X direction).
  • the duct upper portion 31 extends from the inflow port 31a toward the other ( ⁇ Z direction) side in the first direction while the width in the second direction (X direction) is narrowed.
  • the duct connecting portion 32 bends toward the other side (-Y direction) in the third direction from the lower end of the upper portion 31 of the duct toward the other side (-Z direction) in the first direction.
  • the duct lower portion 33 extends linearly from the lower end of the duct connecting portion 32 to the other side ( ⁇ Z direction) in the first direction.
  • the width L2 in the second direction (X direction) of the duct lower portion 33 is 40% or more and 70% or less of the maximum value of the width L1 in the second direction (X direction) of the duct upper portion 31.
  • the width L2 of the duct lower portion 33 in the second direction (X direction) is constant, but the width in the second direction (X direction) toward the other ( ⁇ Z direction) side of the first direction is constant. It may extend while narrowing.
  • the air flow containing water droplets can be smoothly circulated from the duct upper portion 31 to the duct lower portion 33 in the duct 30. Therefore, the ventilation efficiency in the duct 30 can be improved, and the air volume of the hand dryer 1 can be increased.
  • the width of the duct connecting portion 32 in the second direction (X direction) becomes continuously narrower from the duct upper portion 31 toward the duct lower portion 33, and the width of the duct connecting portion 32 in the second direction (X direction) is the minimum.
  • the value is the same as the width L2 in the second direction (X direction) of the duct lower portion 33.
  • the width L2 in the second direction (X direction) of the duct lower portion 33 is 50% or more of the width L3 in the second direction (X direction) of the blower chamber 20.
  • the water receiving passage 34 is connected to the lower part 33 of the duct and is arranged inside the base 60.
  • a water receiving tray 34a is installed in the water receiving passage 34.
  • the water receiving tray 34a collects water dripping through the duct upper portion 31, the duct connecting portion 32, and the duct lower portion 33.
  • the end of the water receiving passage 34 on the opposite side of the duct lower portion 33 is connected to the blower chamber 20.
  • the blower chamber 20 is arranged below the drying chamber 10 in the first direction (Z direction) extending vertically.
  • a blower device 50 is arranged in the blower chamber 20. The blower 50 generates an air flow from the lower side to the upper side through the hoses 40a and 40b.
  • At least one hose 40a and 40b is provided so as to communicate the upper part of the drying chamber 10 and the blower chamber 20. In this embodiment, two are provided.
  • the hoses 40a and 40b are arranged on the downstream side of the blower device 50.
  • the downstream end of the hose 40a communicates with an outlet (not shown) arranged on the front wall 121.
  • the downstream end of the hose 40b communicates with the outlet 11 located on the back wall 122.
  • the hose 40a has a hose lower portion 41a, a hose connection portion 41b, and a hose upper portion 41c.
  • the hose lower portion 41a communicates with the blower chamber 20.
  • the hose upper portion 41c communicates with the drying chamber 10.
  • the hose connection portion 41b connects the hose lower portion 41a and the hose upper portion 41c.
  • the outer cylinder portion of the hose connecting portion 41b is smoothly curved from the hose lower portion 41a toward the hose upper portion 41c. As a result, the airflow can be smoothly circulated from the lower part 41a of the hose to the upper part 41c of the hose in the hose 40a. Further, it is possible to suppress the generation of turbulent flow in the hose 40a. Therefore, the ventilation efficiency in the hose 40a can be improved.
  • the outer diameter of the hose 40a is 15% or more and 20% or less of the width L2 in the second direction (X direction) of the duct lower portion 33. As a result, the flow path resistance in the hose 40a can be reduced and the air volume of the hand dryer 1 can be increased.
  • the sensor detects the inserted hand and operates the blower device 50.
  • the air in the drying chamber 10 flows into the duct 30 from the inflow port 31a.
  • the air that has flowed into the duct 30 is blown out from the outlet 11 to the drying chamber 10 through the blower chamber 20 and the hoses 40a and 40b.
  • the air in the drying chamber 10 circulates.
  • the air blown into the drying chamber 10 is blown to the hands arranged in the drying chamber 10, and the water droplets adhering to the fingers are blown off.
  • the air containing the blown water droplets is sucked into the duct 30.
  • the water droplets adhering to the hand inserted into the drying chamber 10 pass through the duct 30 and are stored in the water receiving tray 34a in the water receiving passage 34.
  • the sensor detects this and stops the driving of the blower device 50. This completes the drying of the hands.
  • FIGS. 1 to 4 are a perspective view and a side sectional view of the hand dryer 1 according to the second embodiment, and show a state in which the cover 70 is removed.
  • FIG. 7 is a perspective view showing a part of the hand dryer 1.
  • the same parts as those in the first embodiment shown in FIGS. 1 to 4 are designated by the same reference numerals.
  • the hand dryer 1 includes a drying chamber 10, a first blower chamber 221 and a second blower chamber 222, a duct 130, a hose 140, a first blower device 151, and a second blower device 152. And a cover 70.
  • the duct 130 has a first duct 131 and a second duct 132, and communicates the lower part of the drying chamber 10 with the first air blower chamber 221.
  • the first duct 131 and the second duct 132 return the air flowing from the drying chamber 10 to the first blower chamber 221.
  • the first duct 131 extends downward from the lower end of the drying chamber 10 and communicates with the first blower chamber 221.
  • a filter 133 is arranged in the first duct 131. As a result, the moisture flowing into the first blower chamber 221 can be reduced.
  • the second duct 132 extends from the lower end of the drying chamber 10 in a direction intersecting the first direction (Z direction) and communicates with the first blower chamber 221. Specifically, the second duct 132 has a labyrinth portion 132a extending in a direction intersecting the first direction (Z direction) and upward. Moisture flowing from the drying chamber 10 passes through the first duct 131, and gas flowing from the drying chamber 10 passes through the second duct 132. This allows water and gas to be separated.
  • the first duct 131 may be communicated with the outside of the hand dryer 1.
  • the flow path area of the second duct 132 is wider than the flow path area of the first duct 131. As a result, the flow path resistance of the second duct 132 can be reduced.
  • the first blower chamber 221 is arranged below the drying chamber 10 in the first direction (Z direction) extending vertically.
  • a first blower device 151 is arranged in the first blower chamber 221.
  • the exhaust port 221a opens in the first ventilation chamber 221.
  • the lower end portion of the first blower chamber 221 has an exhaust port 221a that communicates with the outside of the hand dryer 1 in the first direction (Z direction). Since the exhaust port 221a is provided at the lower end of the hand dryer 1, it is possible to reduce the chance that the user of the hand dryer 1 comes into contact with the exhausted gas.
  • the lower end of the first duct 131 may communicate with the first blower chamber 221. At this time, by arranging the filter 133 in the first duct 131, the moisture flowing into the first air blower chamber 221 can be reduced.
  • the first blower device 151 exhausts the airflow to the outside of the first blower chamber 221 through the exhaust port 221a, and generates the airflow from the upper side to the lower side through the first duct 131 and the second duct 132. That is, the first blower device 151 can generate an air flow from the drying chamber 10 to the first blower chamber 221. By this. An air flow containing water droplets can be smoothly circulated from the drying chamber 10 toward the first duct 131 and the second duct 132. In addition, the amount of air blown by the hand dryer 1 can be improved.
  • the second blower chamber 222 is arranged above the first blower chamber 221. By arranging the second blower chamber 222 near the drying chamber 10, the blower efficiency is improved.
  • the drying chamber 10 has an enlarged portion 12a and a reduced portion 12b.
  • the enlarged portion 12a is composed of the side wall 12, and has a wide width in the direction intersecting the first direction (Z direction).
  • the reduced portion 12b is composed of a side wall 12 and is arranged below the enlarged portion 12a, and the width in the direction intersecting the first direction (Z direction) is narrower than the width in the enlarged portion 12a.
  • the second blower chamber 222 is fixed to the outer surface of the side wall 12 constituting the reduced portion 12b. As a result, the hand dryer 1 can be miniaturized, and the second blower chamber 222 can be stably fixed.
  • the second blower device 152 is arranged in the second blower chamber 222.
  • the intake port 222a opens in the second air vent chamber 222 (see FIG. 7).
  • the second blower 152 can discharge the gas toward the hose 140, and generates an air flow from the lower side to the upper side through the hose 140.
  • the output of the first blower device 151 is lower than the output of the second blower device 152. As a result, by introducing the second blower device 152, the air volume of the hand dryer 1 can be improved even with the first blower device 151 having a low output.
  • One hose 140 is provided by communicating the upper part of the drying chamber 10 and the blower chamber 20 (see FIG. 7). In this embodiment, one hose 140 is provided. The hose 140 is arranged on the downstream side of the second blower 152. The hose 140 has an upstream portion 141 and a downstream portion 142.
  • the upstream portion 141 communicates with the second blower chamber 222.
  • the downstream portion 142 extends from the end of the upstream portion 141 on the drying chamber 10 side. Further, the downstream portion 142 has an air outlet 142a which is formed in an annular shape surrounding the drying chamber opening 13 around the first direction (Z direction) and opens facing the drying chamber 10. This allows a single hose 140 to blow air into the plurality of drying chambers 10. Further, in the vicinity of the drying chamber opening 13, air can be uniformly blown around the first direction (Z direction). It should be noted that the downstream portion 142 may not be formed in a tubular shape, but may be branched from the end portion on the drying chamber 10 side of the upstream portion 141 and extended in a plurality.
  • the sensor detects the inserted hand and operates the first blower device 151 and the second blower device 152.
  • the airflow generated by driving the second blower 152 is blown out from the outlet 142a to the drying chamber 10 through the hose 140. Further, by driving the first blower device 151, the air in the drying chamber 10 flows into the first duct 131 and the second duct 132.
  • the present invention can be used as a hand dryer installed in a washroom or the like and used to dry hands after washing.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Drying Of Solid Materials (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Abstract

Sèche-mains présentant une chambre de séchage, une chambre de soufflage d'air, un conduit et un tuyau. La chambre de soufflage d'air est située sous la chambre de séchage dans une première direction s'étendant vers le haut et vers le bas. Le conduit est de forme cylindrique et assure une communication entre une partie inférieure de la chambre de séchage et la chambre de soufflage d'air. Le tuyau comprend au moins un tuyau assurant une communication entre une partie supérieure de la chambre de séchage et la chambre de soufflage d'air. La partie supérieure de la chambre de séchage présente une ouverture de chambre de séchage qui s'ouvre dans la première direction et qui est en communication avec l'extérieur. Dans la chambre de soufflage d'air, un dispositif de soufflage d'air est disposé qui génère un écoulement d'air vers le haut depuis le bas à travers le tuyau. Le conduit présente une section supérieure de conduit, une section de raccordement de conduit et une section inférieure de conduit. La section supérieure de conduit est en communication avec la partie inférieure de la chambre de séchage et est large dans une seconde direction. La section de raccordement de conduit s'étend dans une direction comportant une troisième composante de direction à partir d'une partie inférieure de la section supérieure de conduit et est large dans la seconde direction. La section inférieure de conduit est en communication avec la section de raccordement de conduit, est située en dessous de la section de raccordement de conduit et est large dans la seconde direction. La largeur de la section inférieure de conduit dans la seconde direction est de 40 % à 70 % de la largeur de la section supérieure de conduit dans la seconde direction.
PCT/JP2021/031872 2020-08-31 2021-08-31 Sèche-mains WO2022045347A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2022545764A JP7448133B2 (ja) 2020-08-31 2021-08-31 ハンドドライヤ
CN202180053616.3A CN116096280A (zh) 2020-08-31 2021-08-31 干手器
US18/115,202 US20230210321A1 (en) 2020-08-31 2023-02-28 Hand dryer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063072302P 2020-08-31 2020-08-31
US63/072,302 2020-08-31

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/115,202 Continuation US20230210321A1 (en) 2020-08-31 2023-02-28 Hand dryer

Publications (1)

Publication Number Publication Date
WO2022045347A1 true WO2022045347A1 (fr) 2022-03-03

Family

ID=80353510

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/031872 WO2022045347A1 (fr) 2020-08-31 2021-08-31 Sèche-mains

Country Status (4)

Country Link
US (1) US20230210321A1 (fr)
JP (1) JP7448133B2 (fr)
CN (1) CN116096280A (fr)
WO (1) WO2022045347A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001037675A (ja) * 1999-07-29 2001-02-13 Kyushu Hitachi Maxell Ltd 水切り装置
JP2004357820A (ja) * 2003-06-03 2004-12-24 Mitsubishi Electric Corp 手乾燥装置
JP2005342496A (ja) * 2004-03-08 2005-12-15 Susumu Urisawa 手指乾燥装置
WO2017057597A1 (fr) * 2015-09-30 2017-04-06 株式会社 Ａｉｒ Ｌａｂｏ Dispositif de séchage des mains
WO2018179085A1 (fr) * 2017-03-28 2018-10-04 三菱電機株式会社 Sèche-mains

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6038786A (en) 1998-04-16 2000-03-21 Excel Dryer Inc. Hand dryer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001037675A (ja) * 1999-07-29 2001-02-13 Kyushu Hitachi Maxell Ltd 水切り装置
JP2004357820A (ja) * 2003-06-03 2004-12-24 Mitsubishi Electric Corp 手乾燥装置
JP2005342496A (ja) * 2004-03-08 2005-12-15 Susumu Urisawa 手指乾燥装置
WO2017057597A1 (fr) * 2015-09-30 2017-04-06 株式会社 Ａｉｒ Ｌａｂｏ Dispositif de séchage des mains
WO2018179085A1 (fr) * 2017-03-28 2018-10-04 三菱電機株式会社 Sèche-mains

Also Published As

Publication number Publication date
US20230210321A1 (en) 2023-07-06
JP7448133B2 (ja) 2024-03-12
CN116096280A (zh) 2023-05-09
JPWO2022045347A1 (fr) 2022-03-03

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