JP2003180554A - Hand dryer - Google Patents
Hand dryerInfo
- Publication number
- JP2003180554A JP2003180554A JP2001384818A JP2001384818A JP2003180554A JP 2003180554 A JP2003180554 A JP 2003180554A JP 2001384818 A JP2001384818 A JP 2001384818A JP 2001384818 A JP2001384818 A JP 2001384818A JP 2003180554 A JP2003180554 A JP 2003180554A
- Authority
- JP
- Japan
- Prior art keywords
- blower
- air
- main body
- hand dryer
- sound deadening
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、濡れた手を乾燥さ
せるための手乾燥装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand dryer for drying wet hands.
【０００２】[0002]
【従来の技術】従来の濡れた手を乾燥させる手乾燥装置
としては、特開平７−１１６０７６号公報に掲載の技術
が知られている。2. Description of the Related Art As a conventional hand dryer for drying wet hands, a technique disclosed in Japanese Patent Laid-Open No. 7-116076 is known.
【０００３】図９はこの公報に掲載された従来の手乾燥
装置の断面図である。図において、１０１は手乾燥装置
の本体である本体、１０２は本体１０１の正面上部に、
正面側と両側面側を開口して形成された凹状の手挿入
部、１０３は高圧空気流を発生する送風機、１０４ａ、
１０４ｂは送風機１０３により発生された高圧空気流を
噴出するノズル、１０５はノズル１０４ａ、１０４ｂか
ら噴出された高圧空気流により手から吹き飛ばされた水
を排水する排水口、１０６は排水口１０５からのドレン
水を下方の着脱可能なドレンタンク１０７に導くための
本体に固定された排水管である。FIG. 9 is a sectional view of the conventional hand dryer disclosed in this publication. In the figure, 101 is a main body which is the main body of the hand dryer, 102 is an upper front part of the main body 101,
A concave hand insertion portion formed by opening the front side and both side surfaces, 103 is a blower for generating a high-pressure air flow, 104a,
104b is a nozzle for ejecting the high-pressure air flow generated by the blower 103, 105 is a drain port for draining the water blown from the hand by the high-pressure air flow ejected from the nozzles 104a, 104b, and 106 is a drain from the drain port 105. It is a drainage pipe fixed to the main body for guiding water to the drain tank 107 which can be attached and detached below.
【０００４】１０８は本体１０１の下方に設けられた吸
気口でありフィルタ１０９が取り付けられている。１１
０は送風機１０３の吸気口、１１１は吸気口１０８と１
１０を連通する吸気ダクト、１１５は送風機１０３から
の高圧空気流を手挿入部１０２に設けられたノズル１０
４ａ、１０４ｂに導く排気ダクトである。Reference numeral 108 denotes an intake port provided below the main body 101, to which a filter 109 is attached. 11
0 is the intake port of the blower 103, 111 is the intake port 108 and 1
An air intake duct communicating with the nozzle 10 and a nozzle 10 provided with a high pressure air flow from the blower 103 in the manual insertion portion 102.
It is an exhaust duct leading to 4a and 104b.
【０００５】上述のように構成された手乾燥装置は、洗
浄後の濡れた手を手挿入部１０２へ入れると、手挿入部
１０２に設けられたセンサー（図示せず）が手を検知し
て送風機１０３が作動する。送風機１０３が作動する
と、本体１０１の下部の吸気口１０８からフィルター１
０９を介して空気が流入し、吸気ダクト１１１を通っ
て、送風機１０３の吸気口１１０から送風機１０３に入
り、高圧化される。In the hand dryer configured as described above, when a wet hand after washing is put into the hand insertion portion 102, a sensor (not shown) provided in the hand insertion portion 102 detects the hand. The blower 103 operates. When the blower 103 is activated, the filter 1 is discharged from the intake port 108 at the bottom of the main body 101.
Air flows in through 09, passes through the intake duct 111, enters the blower 103 from the intake port 110 of the blower 103, and is pressurized.
【０００６】送風機１０３を通過した空気は高圧空気流
となり、排気ダクト１１５を通り、ノズル１０４ａ、１
０４ｂから噴出され、手に付着していた水滴を吹き飛ば
し乾燥させる。吹き飛ばされた水滴は手挿入部１０２の
内壁を伝わって流れ、排水口１０５に入り排水管１０６
を通ってドレンタンク１０７に流れ込む。The air that has passed through the blower 103 becomes a high-pressure air flow, passes through the exhaust duct 115, and nozzles 104a, 1
The water droplets ejected from 04b and adhering to the hand are blown off and dried. The blown water droplets flow along the inner wall of the hand insertion portion 102, enter the drain port 105, and drain pipe 106.
And flows into the drain tank 107.
【０００７】[0007]
【発明が解決しようとする課題】このように構成された
手乾燥装置は、高速の空気流を濡れた手に当て、手に付
着している水滴を吹き飛ばして短時間乾燥をするもので
あるため、高圧空気流を発生させる送風機１０３の回転
音が大きく、市場では更なる低騒音化が要望されてい
る。低騒音化を実現するためには、送風機１０３の回転
に起因する音、例えば約３ｋＨｚのピーク音や、送風機
１０３の回転時に発生する音がノズル１０４や本体１０
１の下部の吸気口１０８などから漏れる音、また、送風
機１０３自体の音を低下させることが必要である。The hand dryer configured as described above is intended to apply a high-speed air stream to a wet hand and blow off water droplets adhering to the hand for short-time drying. The rotating noise of the blower 103 that generates a high-pressure air flow is large, and further noise reduction is demanded in the market. In order to realize low noise, the noise caused by the rotation of the blower 103, for example, a peak sound of about 3 kHz, or the sound generated when the blower 103 rotates is generated by the nozzle 104 or the main body 10.
It is necessary to reduce the sound leaking from the intake port 108 in the lower part of 1 and the sound of the blower 103 itself.
【０００８】従来は、吸気口１０８からノズル１０４に
至る風路内にウレタン等の吸音材を貼り付けて騒音の低
減を図っていたが、吸音材を貼り付けても、高音域の周
波数はある程度低減できるものの、ピーク音を低下させ
ることはできないという課題があった。特に、手乾燥装
置は、掃除機等と異なり、吸気口１０８と送風機１０３
が近くに配置されるため、ピーク音の問題が大きい。ま
た、ノズル１０４や吸気口１０８から漏れる音の低減が
不充分であるという課題があった。Conventionally, a noise absorbing material such as urethane has been attached to the air passage extending from the intake port 108 to the nozzle 104 to reduce noise. However, even if the noise absorbing material is attached, the frequency in the high frequency range is to some extent. Although it can be reduced, there is a problem that the peak sound cannot be reduced. In particular, the hand dryer is different from a vacuum cleaner or the like in that the intake port 108 and the blower 103 are different from each other.
Are located close to each other, so the problem of peak sound is great. Further, there is a problem that the sound leaking from the nozzle 104 and the intake port 108 is not sufficiently reduced.
【０００９】本発明は、このような課題を解決し、騒音
を低減することができる手乾燥装置を得ることを目的と
する。An object of the present invention is to solve the above problems and to obtain a hand dryer capable of reducing noise.
【００１０】[0010]
【問題を解決するための手段】この発明に係る手乾燥装
置は、空気を本体内に吸い込む吸気口と、前記本体内に
収納され前記吸気口から吸い込まれた空気を取り入れて
高圧空気流を発生する送風機と、この送風機により発生
された高圧空気流を前記本体外へ噴出するノズルと、前
記吸気口と前記送風機とを接続する吸気風路と、前記送
風機と前記ノズルとを接続する排気風路と、前記本体内
に設けられた消音部材とを備え、前記消音部材を、複数
の開口部が形成された前面部とこの前面部と空気層を介
して対向する背面部とを有する箱体としたものである。A hand dryer according to the present invention takes in an air inlet for sucking air into a main body, and takes in air contained in the main body and sucked from the air inlet to generate a high-pressure air flow. A blower, a nozzle for ejecting a high-pressure air flow generated by the blower to the outside of the main body, an intake air passage connecting the intake port and the blower, and an exhaust air passage connecting the blower and the nozzle And a sound deadening member provided in the main body, wherein the sound deadening member is a box body having a front surface portion having a plurality of openings and a back surface portion facing the front surface portion through an air layer. It was done.
【００１１】また、消音部材を吸気風路内に設けたもの
である。また、消音部材を排気風路内に設けたものであ
る。また、消音部材を送風機を収納する収納部内に設け
たものである。また、消音部材を本体の前面パネルに設
けたものである。A sound deadening member is provided in the intake air passage. Further, a sound deadening member is provided in the exhaust air passage. Further, the sound deadening member is provided in the storage part for storing the blower. Further, the sound deadening member is provided on the front panel of the main body.
【００１２】また、空気を本体内に吸い込む吸気口と、
前記本体内に収納され前記吸気口から吸い込まれた空気
を取り入れて高圧空気流を発生する送風機と、この送風
機により発生された高圧空気流を前記本体外へ噴出する
ノズルと、前記吸気口と前記送風機とを接続する吸気風
路と、前記送風機と前記ノズルとを接続する排気風路
と、前記本体内に設けられた消音部材とを備え、前記消
音部材を、薄膜で形成された前面部とこの前面部と空気
層を介して対向する背面部とを有する箱体としたもので
ある。An air intake port for sucking air into the main body,
A blower that is housed in the main body and takes in air sucked from the intake port to generate a high-pressure air flow, a nozzle that ejects the high-pressure air flow generated by the blower to the outside of the main body, the intake port and the An intake air passage that connects a blower, an exhaust air passage that connects the blower and the nozzle, and a muffling member provided in the main body, wherein the muffling member is a front surface portion formed of a thin film. The box body has the front surface portion and the back surface portion that faces the air layer.
【００１３】さらに、空気を本体内に吸い込む吸気口
と、前記本体内に収納され前記吸気口から吸い込まれた
空気を取り入れて高圧空気流を発生する送風機と、この
送風機により発生された高圧空気流を前記本体外へ噴出
するノズルと、前記吸気口と前記送風機とを接続する吸
気風路と、前記送風機と前記ノズルとを接続する排気風
路とを備え、前記吸気風路を複数箇所でほぼ直角に曲げ
て形成したものである。Further, an air intake for sucking air into the main body, a blower for accommodating the air contained in the main body to take in the air sucked from the air inlet, and generating a high pressure air flow, and a high pressure air flow generated by the blower. A nozzle that ejects the air from the main body, an intake air passage that connects the intake port and the blower, and an exhaust air passage that connects the blower and the nozzle. It is formed by bending at a right angle.
【００１４】さらにまた、高圧空気流を排出する前記送
風機の排気口の一部を塞いだものである。Further, a part of the exhaust port of the blower for discharging the high pressure air flow is closed.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態につい
て説明する。図１はこの実施の形態１における手乾燥装
置の断面図である。図において、１は手乾燥装置の本体
である箱体であり、本体１の正面は前パネル１ａで構成
され、側面は側面パネル（図示せず）で構成されてい
る。２はこの本体１の正面上部に、正面側と両側面側を
開口して形成された凹状の手挿入部であり、奥側へ向か
って傾斜している。手挿入部２の内壁表面には、シリコ
ン系もしくはフッ素系等の撥水性コ−ティング、又は酸
化チタン等の親水性があるコ−ティング、又は抗菌剤含
浸させ、内壁表面の汚れ付着の低減、及び菌の繁殖の低
減を図っている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a sectional view of a hand dryer according to the first embodiment. In the figure, 1 is a box which is the main body of the hand dryer, the front surface of the main body 1 is constituted by a front panel 1a, and the side surfaces thereof are constituted by side panels (not shown). Reference numeral 2 denotes a concave hand insertion portion formed in the upper front portion of the main body 1 by opening the front side and both side surfaces, and is inclined toward the rear side. The surface of the inner wall of the hand insertion part 2 is coated with a water-repellent coating such as a silicon-based or fluorine-based material, or a hydrophilic coating such as titanium oxide, or an impregnated antibacterial agent to reduce the adhesion of dirt on the inner wall surface. Also, we are trying to reduce the reproduction of bacteria.
【００１６】３は高圧空気流を発生する遠心式の送風機
であり、手挿入部２の下方に設けられている。送風機３
は、例えば、ばね材やゴム材、粘弾性体等の防振部材を
介して本体に固定され、送風機３の振動、騒音を抑止す
る構造となっている。図２に送風機３を側方から見た一
部断面図、図３に送風機３の上面図を示す。図２に示す
ように、送風機３は電動機部３１と羽根車部３２から構
成され、羽根車部３２は外郭のスクロールケーシング３
３及びその内側で回転する遠心式の羽根３４を有してい
る。羽根３４は電動機部３１の電動機の回転軸３５にナ
ット３６で固定され、送風機３の下部すなわち羽根３４
側には吸気口３７が設けられている。また、図３に示す
ように、羽根車部３２の上部外周には複数の排気口３８
が形成されている。ここで、排気口３８の一部は塞がれ
ており、図では塞がれた部分を斜線で示している。な
お、排気口３８の開口面積を小さくするためには、排気
口３８の数を減らしてもよいし、各排気口３８を小さく
形成してもよい。A centrifugal blower 3 for generating a high-pressure air flow is provided below the hand insertion portion 2. Blower 3
Is fixed to the main body via a vibration-proof member such as a spring material, a rubber material, or a viscoelastic body, and has a structure for suppressing vibration and noise of the blower 3. FIG. 2 shows a partial cross-sectional view of the blower 3 viewed from the side, and FIG. 3 shows a top view of the blower 3. As shown in FIG. 2, the blower 3 includes an electric motor portion 31 and an impeller portion 32, and the impeller portion 32 is an outer scroll casing 3
3 and a centrifugal vane 34 rotating inside thereof. The blades 34 are fixed to the rotating shaft 35 of the electric motor of the electric motor section 31 with nuts 36, and the lower portion of the blower 3, that is, the blades 34.
An intake port 37 is provided on the side. Further, as shown in FIG. 3, a plurality of exhaust ports 38 are provided on the outer periphery of the upper portion of the impeller portion 32.
Are formed. Here, a part of the exhaust port 38 is closed, and the closed portion is shown by diagonal lines in the figure. In order to reduce the opening area of the exhaust ports 38, the number of the exhaust ports 38 may be reduced, or each exhaust port 38 may be formed small.
【００１７】電動機が回転すると、羽根３４が回転し、
吸込口３７から空気が吸い込まれ、排気口３８から高圧
空気流として排出される。羽根３４は、高圧・大風量の
空気を出力する為に毎分１５０００〜３００００回転で
回転させている。更に高圧を狙う場合は、毎分３０００
０回転以上にすることもある。When the electric motor rotates, the blades 34 rotate,
Air is sucked in through the suction port 37 and is discharged through the exhaust port 38 as a high-pressure air stream. The blades 34 are rotated at 15,000 to 30,000 revolutions per minute in order to output high pressure and large air volume. For higher pressure, 3000 minutes per minute
It may be 0 rotations or more.
【００１８】図１において、４ａ、４ｂは手挿入部２の
入口の手前側と奥側に対向して設けられ送風機３により
発生された高圧空気流を噴出するノズルである。このノ
ズル４ａ、４ｂは、手挿入部２に挿入した手を擦り合せ
ることなく、手に付着した水滴を手の表裏から排除でき
るように、手の甲側と掌側の双方に風を同時に当て、且
つ、入口から奥への圧力勾配を形成するような傾斜を有
して設けられている。５はノズル４ａ、４ｂから噴出さ
れた高圧空気流により手から吹き飛ばされた水を排水す
る排水口、６は排水口５からのドレン水を本体１の下方
に着脱可能に設けられたドレンタンク７に導くための排
水管であり、本体１内に固定されている。In FIG. 1, reference numerals 4a and 4b denote nozzles which are provided on the front side and the back side of the inlet of the hand insertion portion 2 so as to face each other and eject a high-pressure air flow generated by the blower 3. The nozzles 4a and 4b simultaneously apply wind to both the back side and the palm side of the hand so that water droplets adhering to the hand can be removed from the front and back of the hand without rubbing the hands inserted into the hand insertion portion 2 and , With an inclination that forms a pressure gradient from the inlet to the back. Reference numeral 5 denotes a drain port for draining water blown out of the hands by the high-pressure air flow ejected from the nozzles 4a and 4b, and 6 denotes a drain tank 7 detachably provided for drain water from the drain port 5 below the main body 1. It is a drainage pipe for guiding to, and is fixed in the main body 1.
【００１９】８は本体１の下部に設けられた吸気口であ
り、空気中の埃などを除去する着脱可能なフィルタ９が
取り付けられている。１１は本体１下部の吸気口８と送
風機の吸気口３７を連通する吸気風路である吸気ダクト
であり、背面側からほぼ水平方向に設けられた遮蔽板１
２によって途中３ヵ所で風路がほぼ直角に曲げられてい
る。図１に示す手乾燥装置をＡ−Ａで切断した場合の断
面図を図４に示す。図４に示すように、遮蔽板１２は吸
気ダクト１１の両側面に接している。Reference numeral 8 denotes an intake port provided in the lower portion of the main body 1, to which a removable filter 9 for removing dust and the like in the air is attached. Reference numeral 11 denotes an intake duct that is an intake air passage that connects the intake port 8 at the bottom of the main body 1 to the intake port 37 of the blower, and is a shield plate 1 provided in a substantially horizontal direction from the back side.
By 2 the wind path is bent almost at a right angle in 3 places on the way. FIG. 4 shows a sectional view of the hand dryer shown in FIG. 1 taken along line AA. As shown in FIG. 4, the shielding plate 12 is in contact with both side surfaces of the intake duct 11.
【００２０】１４は送風機３の上方に形成された排気連
絡口であり、送風機３を収納している空間と次に説明す
る排気ダクト１５ａ、１５ｂとを連通している。排気ダ
クト１５ａ、１５ｂは送風機３の排気口３８から排気さ
れ排気連絡口１４を通った高圧空気流を手挿入部２に設
けられたノズル４ａ、４ｂに導くものであり、本体１の
前面側と背面側にそれぞれ形成されている。このよう
に、本体１内には、送風機３の排気口３８からノズル４
ａ、４ｂに至る排気風路が形成されている。Reference numeral 14 denotes an exhaust communication port formed above the blower 3, which communicates the space in which the blower 3 is housed with the exhaust ducts 15a and 15b described below. The exhaust ducts 15a and 15b guide the high-pressure air flow exhausted from the exhaust port 38 of the blower 3 and passed through the exhaust communication port 14 to the nozzles 4a and 4b provided in the manual insertion part 2, and are connected to the front side of the main body 1. Each is formed on the back side. As described above, in the main body 1, from the exhaust port 38 of the blower 3 to the nozzle 4
An exhaust air passage extending to a and 4b is formed.
【００２１】また、１６ａと１６ｂは手を検知するセン
サーであり、１６ａは発光素子で手挿入部２の手前側の
上部と下部に設けられ、１６ｂは受光素子で手挿入部２
の奥側に１つ設けられている。また、受光素子１６ｂが
設けられている基板には手挿入部２や挿入される手を照
明する照明用発光素子が設けられている。Further, 16a and 16b are sensors for detecting a hand, and 16a is a light emitting element provided on the upper and lower sides of the front side of the hand inserting section 2, and 16b is a light receiving element, which is the hand inserting section 2.
One is provided on the back side of. Further, on the substrate on which the light receiving element 16b is provided, the hand insertion portion 2 and an illumination light emitting element for illuminating the inserted hand are provided.
【００２２】２１は消音部材であり、この実施の形態１
においては本体内の複数箇所に設けられている。すなわ
ち、本体１の前パネル１ａの内側に第１の消音部材２１
ａ、吸気ダクト１１の前面部１１ａに第２の消音部材２
１ｂ、遮蔽板１２の下面に第３の消音部材２１ｃ、遮蔽
板１２の上面に第４の消音部材２１ｄ、送風機３の筒状
の収納部の内壁面に第５の消音部材２１ｅ、排気連絡口
１４の上面、すなわち手挿入部２の下方を覆うカバーの
下面に第６の消音部材２１ｆ、背面側の排気ダクト１５
ｂの背面部１５ｃの上部に第７の消音部材２１ｇがそれ
ぞれ設けられている。Reference numeral 21 denotes a sound deadening member, which is used in the first embodiment.
Are provided at a plurality of locations in the main body. That is, the first silencing member 21 is provided inside the front panel 1a of the main body 1.
a, the second muffling member 2 on the front surface portion 11a of the intake duct 11.
1b, a third sound deadening member 21c on the lower surface of the shield plate 12, a fourth sound deadening member 21d on the upper surface of the shield plate 12, a fifth sound deadening member 21e on the inner wall surface of the cylindrical housing portion of the blower 3, an exhaust communication port. On the upper surface of 14, that is, the lower surface of the cover that covers the lower part of the hand insertion portion 2, the sixth sound deadening member 21f and the rear side exhaust duct 15 are provided.
Seventh sound deadening members 21g are provided on the upper part of the back surface portion 15c of b.
【００２３】図５に消音部材２１の構成を示す。図に示
すように、消音部材２１は、前面部２２とこの前面部２
２と空気層２４を介して対向する背面部２３とを有する
箱体である。なお、図においては、消音部材２１の一側
面を切断して示している。前面部２２には複数の開口部
である円形穴２５が形成され、消音部材２１はこの円形
穴２５以外に開口部がないように形成されている。FIG. 5 shows the structure of the sound deadening member 21. As shown in the figure, the sound deadening member 21 includes a front surface portion 22 and the front surface portion 2.
2 is a box body having a back surface portion 23 facing each other through an air layer 24. In addition, in the figure, one side surface of the sound deadening member 21 is cut and shown. A plurality of circular holes 25, which are openings, are formed in the front surface portion 22, and the sound deadening member 21 is formed so that there are no openings other than the circular holes 25.
【００２４】また、第１の消音部材２１ａでは前パネル
１ａが背面部２３に相当し、前面部２２は本体１の内側
に配置されている。また、第２の消音部材２１ｂでは吸
気ダクト１１の前面板１１ａが背面部２３に相当し、吸
気ダクト１１の風路に面する側に前面部２２を配置して
いる。第３の消音部材２１ｃでは遮蔽板１２の下面が背
面部２３に相当し、吸気ダクト１１の風路に面する側に
前面部２２を配置している。第４の消音部材２１ｄでは
遮蔽板１２の上面が背面部２３に相当し、吸気ダクト１
１の風路に面する側に前面部２２を配置している。In the first sound deadening member 21a, the front panel 1a corresponds to the back surface portion 23, and the front surface portion 22 is arranged inside the main body 1. Further, in the second sound deadening member 21b, the front plate 11a of the intake duct 11 corresponds to the rear part 23, and the front part 22 is arranged on the side of the intake duct 11 facing the air passage. In the third muffling member 21c, the lower surface of the shielding plate 12 corresponds to the rear surface portion 23, and the front surface portion 22 is arranged on the side of the intake duct 11 facing the air passage. In the fourth sound deadening member 21d, the upper surface of the shielding plate 12 corresponds to the rear surface portion 23, and the intake duct 1
The front surface portion 22 is arranged on the side facing the air passage 1.
【００２５】また、第５の消音部材２１ｅでは送風機３
の筒状の収納部の内壁が背面部２３に相当し、排気風路
に面する側に筒状の前面部２２を配置している。第６の
消音部材２１ｆでは排気連絡口１４の上面を構成する構
成部材が背面部２３に相当し、排気風路に面する側に前
面部２２を配置している。第７の消音部材２１ｇでは排
気ダクト１５ｂの背面板１５ｃが背面部２３に相当し、
排気風路に面する側に前面部２２を配置している。Further, in the fifth sound deadening member 21e, the blower 3
The inner wall of the cylindrical housing portion corresponds to the rear surface portion 23, and the cylindrical front surface portion 22 is arranged on the side facing the exhaust air passage. In the sixth sound deadening member 21f, the constituent member that constitutes the upper surface of the exhaust communication port 14 corresponds to the rear surface portion 23, and the front surface portion 22 is arranged on the side facing the exhaust air passage. In the seventh sound deadening member 21g, the rear plate 15c of the exhaust duct 15b corresponds to the rear portion 23,
The front surface portion 22 is arranged on the side facing the exhaust air passage.
【００２６】この消音部材２１は、円形穴２５の数や大
きさ、空気層２４の厚みなどに応じて低減できる音の周
波数が決まるものである。空気の音速（３４０００ｃｍ
／ｓｅｃ）をＣ0、円形穴２５の直径をｄ〔ｃｍ〕、円
形穴２５の断面積をａ〔ｃｍ2〕、空気層の容積をＶ
〔ｃｍ3〕、前面部の板厚をＬ0〔ｃｍ〕とすると、その
共鳴周波数ｆは下式のようになる。The sound deadening member 21 determines the frequency of sound that can be reduced according to the number and size of the circular holes 25 and the thickness of the air layer 24. Sound velocity of air (34000 cm)
/ Sec) is C 0 , the diameter of the circular hole 25 is d [cm], the cross-sectional area of the circular hole 25 is a [cm 2 ], and the volume of the air layer is V
Letting [cm 3 ] be the plate thickness of the front part be L 0 [cm], the resonance frequency f is as shown in the following formula.
【００２７】[0027]
【数１】 [Equation 1]
【００２８】この実施の形態においては、上式によっ
て、共鳴周波数ｆが送風機３の回転音、すなわちピーク
音の周波数に合致するように、円形穴２５の数や大き
さ、前面部２２の厚み、空気層２４の厚みなどを最適に
設定している。In this embodiment, the number and size of the circular holes 25, the thickness of the front face portion 22, and the thickness of the front face portion 22 are set so that the resonance frequency f coincides with the rotation sound of the blower 3, that is, the frequency of the peak sound according to the above equation. The thickness of the air layer 24 is optimally set.
【００２９】なお、この実施の形態においては、消音部
材２１ａ〜２１ｇは、本体１の一部を背面部２３として
用いているが、消音部材２１を別個の箱体として形成
し、本体１内の適当な場所にネジ止めや接着によって取
り付けるようにしてもよい。このように構成した場合に
は、消音部材２１が不用になったときには容易に取り外
すことができる。In this embodiment, the sound deadening members 21a to 21g use a part of the main body 1 as the back surface portion 23, but the sound deadening member 21 is formed as a separate box, and the inside of the main body 1 is formed. You may make it attach to an appropriate place by screwing or adhesion. With this structure, the muffling member 21 can be easily removed when it is no longer needed.
【００３０】次に、以上のように構成された手乾燥装置
の動作を説明する。手を手首付近まで手挿入部２へ挿入
すると、センサー１６ａ、１６ｂが手を検知し、送風機
３が作動し、それによって本体１下部の吸気口８よりフ
ィルタ９を通過して空気が吸気される。吸気口８から上
方に吸い込まれた空気は遮蔽板１２の下面に設けられた
消音部材２１ｃに当たって本体前方に流れ、吸気ダクト
１１の前面部に設けられた消音部材２１ｂに当たって再
び風路がほぼ直角に曲げられて上方に進み、消音部材２
１ｄの上面に沿って横方向に流れて送風機３の吸気口３
７から送風機３内に吸い込まれる。Next, the operation of the hand dryer having the above structure will be described. When the hand is inserted into the hand insertion portion 2 up to the vicinity of the wrist, the sensors 16a and 16b detect the hand, and the blower 3 operates, whereby air is taken in through the filter 9 from the intake port 8 at the bottom of the main body 1. . The air sucked upward from the intake port 8 hits the sound deadening member 21c provided on the lower surface of the shielding plate 12 and flows toward the front of the main body, hits the sound deadening member 21b provided at the front surface of the intake duct 11, and the air passage is again made at a substantially right angle. Bending and going upwards, the sound deadening member 2
The air inlet 3 of the blower 3 flows laterally along the upper surface of 1d.
7 is sucked into the blower 3.
【００３１】このように、風路がほぼ直角に曲った部分
では入射波と反射波の位相差から、ある特定の周波数を
中心に減音効果が得られる。それによって送風機３の羽
根車部３２から発生した流体音が吸気口８から外部に漏
れるのを防ぐことができる。さらに、吸気ダクト１１内
には消音部材２１ｂ、２１ｃ、２１ｄが設けられている
ため、送風機３のピーク音を効果的に低減でき、騒音が
吸気口８から外部に漏れるのを防ぐことができる。As described above, in the portion where the air passage is bent at a substantially right angle, the sound reduction effect can be obtained around the specific frequency from the phase difference between the incident wave and the reflected wave. Thereby, it is possible to prevent the fluid sound generated from the impeller portion 32 of the blower 3 from leaking to the outside from the intake port 8. Further, since the muffling members 21b, 21c, 21d are provided in the intake duct 11, it is possible to effectively reduce the peak sound of the blower 3 and prevent noise from leaking from the intake port 8 to the outside.
【００３２】送風機３に吸い込まれた空気は高圧空気流
となり、排気口３８から排出される。ここで、排気口３
８は従来のものより少なく形成されているので、送風機
３自体から発生する音を遮断することができる。排気口
３８から排気された高圧空気流は、排気連絡口１４を通
って排気ダクト１５ａ、１５ｂに分かれ、ノズル４ａ、
４ｂから噴出される。送風機３の排気口３８からノズル
４ａ、４ｂに至る排気風路には消音部材２１ｅ、２１
ｆ、２１ｇが設けられているため、送風機３のピーク音
は低減され、騒音がノズル４ａ、４ｂから外部に漏れる
のを防ぐことができる。特に、音源に近い送風機３の収
納部の内壁に設けられた消音部材２１ｅによってピーク
音は効果的に低減される。また、前面パネル１ａの内側
にも少なくとも送風機３に対向する位置に消音部材２１
ａを設けたので、ピーク音が外部に漏れるのを防止でき
る。The air sucked into the blower 3 becomes a high pressure air flow and is discharged from the exhaust port 38. Here, exhaust port 3
Since the number 8 is smaller than that of the conventional one, it is possible to block the sound generated from the blower 3 itself. The high-pressure air flow exhausted from the exhaust port 38 passes through the exhaust communication port 14 and is divided into exhaust ducts 15a and 15b.
It is ejected from 4b. In the exhaust air passage extending from the exhaust port 38 of the blower 3 to the nozzles 4a, 4b, the sound deadening members 21e, 21
Since f and 21g are provided, the peak sound of the blower 3 is reduced, and noise can be prevented from leaking to the outside from the nozzles 4a and 4b. Particularly, the peak sound is effectively reduced by the muffling member 21e provided on the inner wall of the housing portion of the blower 3 near the sound source. In addition, inside the front panel 1a, at least at a position facing the blower 3, the sound deadening member 21 is provided.
Since a is provided, it is possible to prevent the peak sound from leaking to the outside.
【００３３】ノズル４ａ、４ｂより噴出された高圧空気
流が手挿入部２内に挿入された手に当たり、手の表面に
付着していた水を水滴として吹き飛ばす。さらに、手挿
入部２内で手を挿抜させることによって、手全体に付着
していた水滴がすべて排除され手が乾燥する。そして手
の乾燥後、手を手挿入部２から完全に抜くと、センサー
１６ａ、１６ｂが手を検知しなくなるため、送風機３が
停止する。The high-pressure air flow ejected from the nozzles 4a and 4b hits the hand inserted into the hand insertion portion 2 and blows off the water adhering to the surface of the hand as water droplets. Further, by inserting / removing the hand in the hand insertion portion 2, all water droplets attached to the entire hand are removed and the hand is dried. When the hand is completely removed from the hand insertion portion 2 after the hand is dried, the sensors 16a and 16b stop detecting the hand, and the blower 3 stops.
【００３４】このように、この実施の形態１によれば、
消音部材２１ａ〜２１ｇや吸気ダクト１１の構造によ
り、手乾燥装置の騒音を低減することができる。なお、
消音部材２１ａ〜２１ｇは、全てが必要なのではなく、
効果、コストなどに応じて適所に設ければ良い。As described above, according to the first embodiment,
Noise of the hand dryer can be reduced by the structure of the muffling members 21 a to 21 g and the intake duct 11. In addition,
The muffling members 21a to 21g are not all required,
It may be provided in a suitable place depending on the effect, cost, and the like.
【００３５】実施の形態２．図６にこの発明における手
乾燥装置に用いられる消音部材の他の例を示す。消音部
材以外の構成及び動作は上記実施の形態１と同様である
ので、説明は省略する。この実施の形態における消音部
材２１０は、スリット穴２６を有する前面部２７と、背
面部２３、及び前面部２７と背面部２３の間に形成され
た空気層２４とから構成される。この消音部材２１０に
おいても、低下させたい送風機３のピーク音の周波数に
合致するように、スリット穴２６の数や大きさ、空気層
２４の厚みなどを最適に設定している。したがって、こ
の実施の形態２によっても、上記実施の形態１と同様
に、送風機３のピーク音を低減でき、手乾燥装置全体の
騒音を低減することができる。Embodiment 2. FIG. 6 shows another example of the sound deadening member used in the hand dryer according to the present invention. The configuration and operation other than the sound deadening member are the same as those in the first embodiment, and therefore the description thereof is omitted. The sound deadening member 210 in this embodiment includes a front surface portion 27 having a slit hole 26, a rear surface portion 23, and an air layer 24 formed between the front surface portion 27 and the rear surface portion 23. Also in this sound deadening member 210, the number and size of the slit holes 26, the thickness of the air layer 24, etc. are optimally set so as to match the frequency of the peak sound of the blower 3 to be reduced. Therefore, according to the second embodiment as well, similar to the first embodiment, the peak noise of the blower 3 can be reduced, and the noise of the entire hand dryer can be reduced.
【００３６】実施の形態３．図７にこの発明における手
乾燥装置に用いられる消音部材の他の例を示す。消音部
材以外の構成及び動作は上記実施の形態１と同様である
ので、説明は省略する。この実施の形態における消音部
材２１１は、前面に設けられた多孔質体２８と、背面部
２３、及び多孔質体２８と背面部２３の間に形成された
空気層２４とから構成される。この消音部材２１１にお
いては、低下させたい送風機３のピーク音の周波数に合
致するように、多孔質体２８の厚み、空気層２４の厚み
などを最適に設定している。したがって、この実施の形
態３によっても、上記実施の形態１と同様に、送風機３
のピーク音を低減でき、手乾燥装置全体の騒音を低減す
ることができる。Embodiment 3. FIG. 7 shows another example of the sound deadening member used in the hand dryer according to the present invention. The configuration and operation other than the sound deadening member are the same as those in the first embodiment, and therefore the description thereof is omitted. The sound deadening member 211 in this embodiment includes a porous body 28 provided on the front surface, a back surface portion 23, and an air layer 24 formed between the porous material 28 and the back surface portion 23. In the sound deadening member 211, the thickness of the porous body 28, the thickness of the air layer 24, etc. are optimally set so as to match the frequency of the peak sound of the blower 3 to be reduced. Therefore, according to the third embodiment, as in the first embodiment, the blower 3
It is possible to reduce the peak sound, and it is possible to reduce the noise of the entire hand dryer.
【００３７】実施の形態４．図８にこの発明における手
乾燥装置に用いられる消音部材の他の例を示す。消音部
材以外の構成及び動作は上記実施の形態１と同様である
ので、説明は省略する。この実施の形態における消音部
材２１２は、前面に設けられた薄膜２９と、背面部２
３、及び薄膜２９と背面部２３の間に形成された空気層
２４とから構成される。この消音部材２１２において
は、低下させたい送風機３のピーク音の周波数に合致す
るように、薄膜２９の厚み、空気層２４の厚みなどを最
適に設定している。したがって、この実施の形態４によ
っても、上記実施の形態１と同様に、送風機３のピーク
音を低減でき、手乾燥装置全体の騒音を低減することが
できる。Fourth Embodiment FIG. 8 shows another example of the sound deadening member used in the hand dryer according to the present invention. The configuration and operation other than the sound deadening member are the same as those in the first embodiment, and therefore the description thereof is omitted. The sound deadening member 212 in this embodiment includes a thin film 29 provided on the front surface and a back surface portion 2
3, and an air layer 24 formed between the thin film 29 and the back surface portion 23. In the sound deadening member 212, the thickness of the thin film 29, the thickness of the air layer 24, etc. are optimally set so as to match the frequency of the peak sound of the blower 3 to be reduced. Therefore, according to the fourth embodiment, as in the first embodiment, the peak sound of the blower 3 can be reduced, and the noise of the entire hand dryer can be reduced.
【００３８】[0038]
【発明の効果】この発明によれば、手乾燥装置の騒音を
低減することができる。According to the present invention, the noise of the hand dryer can be reduced.
【００３９】特に、消音部材を吸気風路内に設けたの
で、吸気口から漏れる音を低減することができる。In particular, since the sound deadening member is provided in the intake air passage, the sound leaking from the intake port can be reduced.
【００４０】また、消音部材を排気風路内に設けたの
で、ノズルから漏れる音を低減することができる。Further, since the sound deadening member is provided in the exhaust air passage, the sound leaking from the nozzle can be reduced.
【００４１】また、消音部材を送風機を収納する収納部
内に設けたので、送風機から発生する音を効果的に低減
することができる。Further, since the muffling member is provided in the housing portion for housing the blower, the sound generated by the blower can be effectively reduced.
【００４２】また、消音部材を本体の前面パネルに設け
たので、本体から前方に漏れる音を低減することができ
る。Further, since the sound deadening member is provided on the front panel of the main body, the sound leaking forward from the main body can be reduced.
【００４３】さらに、吸気風路を複数箇所でほぼ直角に
曲げて形成したので、吸気口から漏れる音を低減するこ
とができる。Further, since the intake air passage is formed by bending it at a plurality of locations at substantially right angles, it is possible to reduce the sound leaking from the intake port.
【００４４】さらにまた、高圧空気流を排出する前記送
風機の排気口の一部を塞ぐことにより、送風機自体から
発生する音を低減することができる。Furthermore, by blocking a part of the exhaust port of the blower that discharges the high-pressure air flow, it is possible to reduce the sound generated from the blower itself.
【図１】 本発明の手乾燥装置の断面図である。FIG. 1 is a cross-sectional view of a hand dryer of the present invention.
【図２】 本発明の手乾燥装置の送風機の一部断面図で
ある。FIG. 2 is a partial cross-sectional view of the blower of the hand dryer of the present invention.
【図３】 本発明の手乾燥装置の送風機の上面図であ
る。FIG. 3 is a top view of the blower of the hand dryer of the present invention.
【図４】 図1に示す手乾燥装置のＡ−Ａ断面図であ
る。FIG. 4 is a cross-sectional view taken along the line AA of the hand dryer shown in FIG.
【図５】 本発明の実施の形態１における消音部材の斜
視図である。FIG. 5 is a perspective view of a sound deadening member according to the first embodiment of the present invention.
【図６】 本発明の実施の形態２における消音部材の斜
視図である。FIG. 6 is a perspective view of a sound deadening member according to the second embodiment of the present invention.
【図７】 本発明の実施の形態３における消音部材の斜
視図である。FIG. 7 is a perspective view of a sound deadening member according to a third embodiment of the present invention.
【図８】 本発明の実施の形態４における消音部材の斜
視図である。FIG. 8 is a perspective view of a sound deadening member according to Embodiment 4 of the present invention.
【図９】 従来の手乾燥装置の断面図である。FIG. 9 is a cross-sectional view of a conventional hand dryer.
１ 本体、２ 手挿入部、３ 送風機、４ａ、４ｂ ノ
ズル、８ 吸気口、１１ 吸気ダクト、１２ 遮蔽板、
１５ａ、１５ｂ 排気ダクト、２１ａ〜２１ｇ消音部
材、２２、２７、２８、２９ 前面部、２３ 背面部、
３８ 排気口。DESCRIPTION OF SYMBOLS 1 main body, 2 hand insertion part, 3 blowers, 4a, 4b nozzles, 8 intake ports, 11 intake ducts, 12 shielding plates,
15a, 15b Exhaust duct, 21a-21g sound deadening member, 22, 27, 28, 29 Front part, 23 Rear part,
38 Exhaust port.
Claims (8)
本体内に収納され前記吸気口から吸い込まれた空気を取
り入れて高圧空気流を発生する送風機と、この送風機に
より発生された高圧空気流を前記本体外へ噴出するノズ
ルと、前記吸気口と前記送風機とを接続する吸気風路
と、前記送風機と前記ノズルとを接続する排気風路と、
前記本体内に設けられた消音部材とを備え、前記消音部
材は、複数の開口部が形成された前面部とこの前面部と
空気層を介して対向する背面部とを有する箱体であるこ
とを特徴とする手乾燥装置。1. An air intake for sucking air into a main body, a blower for accommodating air sucked from the air intake in the main body to generate a high pressure air flow, and a high pressure air flow generated by the blower. A nozzle for ejecting the outside of the main body, an intake air passage connecting the intake port and the blower, and an exhaust air passage connecting the blower and the nozzle,
A sound deadening member provided in the main body, wherein the sound deadening member is a box body having a front surface portion having a plurality of openings and a back surface portion facing the front surface portion through an air layer. Hand dryer characterized by.
ことを特徴とする手乾燥装置。2. A hand dryer according to claim 2, wherein the noise reduction member is provided in the intake air passage.
ことを特徴とする手乾燥装置。3. A hand dryer according to claim 1, wherein the sound deadening member is provided in the exhaust air passage.
納部内に設けたことを特徴とする手乾燥装置。4. The hand dryer according to claim 4, wherein the muffling member is provided in a storage unit that stores the blower.
設けたことを特徴とする手乾燥装置。5. The hand dryer according to claim 5, wherein the sound deadening member is provided on a front panel of the main body.
本体内に収納され前記吸気口から吸い込まれた空気を取
り入れて高圧空気流を発生する送風機と、この送風機に
より発生された高圧空気流を前記本体外へ噴出するノズ
ルと、前記吸気口と前記送風機とを接続する吸気風路
と、前記送風機と前記ノズルとを接続する排気風路と、
前記本体内に設けられた消音部材とを備え、前記消音部
材は、薄膜で形成された前面部とこの前面部と空気層を
介して対向する背面部とを有する箱体であることを特徴
とする手乾燥装置。6. An air intake port for sucking air into the main body, a blower housed in the main body for taking in air sucked from the air intake port to generate a high pressure air flow, and a high pressure air flow generated by the blower. A nozzle for ejecting the outside of the main body, an intake air passage connecting the intake port and the blower, and an exhaust air passage connecting the blower and the nozzle,
A sound deadening member provided in the main body, wherein the sound deadening member is a box body having a front surface part formed of a thin film and a back surface part facing the front surface part with an air layer in between. Hand dryer to do.
本体内に収納され前記吸気口から吸い込まれた空気を取
り入れて高圧空気流を発生する送風機と、この送風機に
より発生された高圧空気流を前記本体外へ噴出するノズ
ルと、前記吸気口と前記送風機とを接続する吸気風路
と、前記送風機と前記ノズルとを接続する排気風路とを
備え、前記吸気風路は複数箇所でほぼ直角に曲げて形成
されていることを特徴とする手乾燥装置。7. An air intake port for sucking air into the main body, a blower which is housed in the main body and takes in the air sucked from the air inlet to generate a high pressure air flow, and a high pressure air flow generated by the blower. A nozzle that ejects the air from the main body, an intake air passage that connects the intake port and the blower, and an exhaust air passage that connects the blower and the nozzle. A hand dryer which is formed by bending at a right angle.
口の一部を塞いだことを特徴とする前記請求項１ないし
請求項７の何れかに記載の手乾燥装置。8. The hand dryer according to claim 1, wherein a part of an exhaust port of the blower for discharging the high pressure air flow is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001384818A JP3630137B2 (en) | 2001-12-18 | 2001-12-18 | Hand dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001384818A JP3630137B2 (en) | 2001-12-18 | 2001-12-18 | Hand dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003180554A true JP2003180554A (en) | 2003-07-02 |
| JP3630137B2 JP3630137B2 (en) | 2005-03-16 |
Family
ID=27594461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001384818A Expired - Fee Related JP3630137B2 (en) | 2001-12-18 | 2001-12-18 | Hand dryer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3630137B2 (en) |
Cited By (9)
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|---|---|---|---|---|
| WO2007015039A1 (en) * | 2005-07-30 | 2007-02-08 | Dyson Technology Limited | Drying apparatus |
| GB2434094A (en) * | 2006-01-12 | 2007-07-18 | Dyson Technology Ltd | Drying apparatus with sound-absorbing material |
| US7946055B2 (en) | 2005-07-30 | 2011-05-24 | Dyson Technology Limited | Dryer |
| JPWO2010095251A1 (en) * | 2009-02-20 | 2012-08-16 | 三菱電機株式会社 | Hand dryer |
| WO2013187004A1 (en) * | 2012-06-12 | 2013-12-19 | パナソニック株式会社 | Hand dryer |
| WO2014125146A1 (en) | 2013-02-13 | 2014-08-21 | Ffuuss 2013, S. L. | Hand-dryer |
| JP5747166B2 (en) * | 2009-07-16 | 2015-07-08 | パナソニックＩｐマネジメント株式会社 | Hand dryer |
| JP2017202157A (en) * | 2016-05-12 | 2017-11-16 | 三菱電機ビルテクノサービス株式会社 | Washing equipment |
| WO2018066134A1 (en) * | 2016-10-07 | 2018-04-12 | 三菱電機株式会社 | Electric blower, electric vacuum cleaner, and hand dryer |
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| WO2014125146A1 (en) | 2013-02-13 | 2014-08-21 | Ffuuss 2013, S. L. | Hand-dryer |
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