JP4086026B2 - Hand dryer - Google Patents

Hand dryer Download PDF

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JP4086026B2
JP4086026B2 JP2004281821A JP2004281821A JP4086026B2 JP 4086026 B2 JP4086026 B2 JP 4086026B2 JP 2004281821 A JP2004281821 A JP 2004281821A JP 2004281821 A JP2004281821 A JP 2004281821A JP 4086026 B2 JP4086026 B2 JP 4086026B2
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air
sound
air passage
absorbing material
hand
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JP2006094927A (en
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和宏 谷口
務 加藤
和郎 荻野
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、洗面所やトイレ等で手を洗い、濡れた手を乾燥させる手乾燥装置内に設置された手乾燥装置に関するものである。   The present invention relates to a hand drying device installed in a hand drying device for washing hands in a washroom or a toilet and drying wet hands.

従来、この種の手乾燥装置は、空気流発生装置としての電動送風機の周囲に吸音材を貼付したものが知られている(例えば、特許文献1参照)。以下、その手乾燥装置について図15を参照しながら説明する。   Conventionally, this type of hand-drying device is known in which a sound-absorbing material is pasted around an electric blower as an airflow generator (see, for example, Patent Document 1). Hereinafter, the hand dryer will be described with reference to FIG.

101は空気流を送風する電動送風機である。102は本体、103は手を乾燥する乾燥室104の上面が開放した手挿入部(開放部)、乾燥室104に電動送風機101が送風する空気流を噴出する噴出孔105を、また奥部に噴出孔105から噴出した空気流を回収する吸気口106を有している。107は乾燥室104の下方にあって電動送風機101へ空気を供給する送風流路、(電動送風機101の左側の流路。)108は吸気口106から電動送風機101へ空気を環流するための循環流路で、循環流路108は吸気口106から下へ延び、空気と水滴の両方を含んだ回収部108aと、回収部108aから電動送風機101への環流部108bと、送風流路107とにわかれ、回収部108aからドレインタンク109へ水滴を回収するための水滴回収口110が設けてある。111は電動送風機101を収納する電動送風機ケースで、内部は仕切り部112により高圧部113にあるファン114と低圧部115にあるモータ116に分離してあり、送風流路107からファン114の中心へ空気を吸引し、円周状に送風するようになっている。   Reference numeral 101 denotes an electric blower that blows an air flow. 102 is a main body, 103 is a hand insertion part (open part) in which the upper surface of a drying chamber 104 for drying hands is opened, an ejection hole 105 for ejecting an air flow blown by the electric blower 101 to the drying chamber 104, and a back part. An air inlet 106 for collecting the air flow ejected from the ejection hole 105 is provided. Reference numeral 107 denotes a blower passage that supplies air to the electric blower 101 below the drying chamber 104, and (a flow passage on the left side of the electric blower 101) 108 circulates to circulate air from the intake port 106 to the electric blower 101. In the flow path, the circulation flow path 108 extends downward from the air inlet 106, and includes a collection unit 108 a including both air and water droplets, a circulation unit 108 b from the collection unit 108 a to the electric blower 101, and a blow flow channel 107. In addition, a water droplet collection port 110 for collecting water droplets from the collection unit 108a to the drain tank 109 is provided. Reference numeral 111 denotes an electric blower case that houses the electric blower 101, and the interior is separated into a fan 114 in the high-pressure section 113 and a motor 116 in the low-pressure section 115 by a partition 112, and the air flow path 107 goes to the center of the fan 114. Air is sucked and blown circumferentially.

そして、送風の一部空気流がファン114の内部からモータ116へ空気を逃がす構成にしてある。119は電動送風機吹出し口である。   A part of the air flow of the blast releases air from the inside of the fan 114 to the motor 116. Reference numeral 119 denotes an electric blower outlet.

上記構成において、ファン吸気口吸音材117、電動送風機ケース111の高圧部113の内側に設けた吸音材118を貼付したものが知られている。
特開2002−34836号公報
In the above-described configuration, a sound absorbing material 117 provided on the inside of the high pressure portion 113 of the fan air inlet sound absorbing material 117 and the electric blower case 111 is known.
JP 2002-34836 A

このような従来の手乾燥装置では、一般的に騒音が大きく、使用者または周囲に対して不快感を与えるという課題があり、また、病院や図書館など特に静粛を要する施設においては騒音が大きい為に設置できないという課題があり、さらに騒音を低減することが要求されている。   Such conventional hand dryers are generally noisy and have the problem of causing discomfort to the user or the surroundings, and the noise is particularly high in hospitals and libraries such as hospitals and libraries. However, it is required to reduce noise.

本発明は、このような従来の課題を解決するものであり、手乾燥装置より発生する騒音において耳障りな空気流発生装置の運転音や吹出風路及び吸込風路中を空気流が通過することによる通風音を低減することによりノズル開口部または吸込口より外部へ放射する騒音を低減することができる手乾燥装置を提供することを目的としている。   The present invention solves such a conventional problem, and the airflow passes through the operation sound of the airflow generator and the blowout airflow path and the suction airflow path that are annoying in the noise generated from the hand dryer. It aims at providing the hand dryer which can reduce the noise radiated | emitted outside from a nozzle opening part or a suction inlet by reducing the ventilation sound by.

本発明の手乾燥装置は上記目標を達成するため、外気を取り入れる吸込口と、前記吸込口から取り込んだ空気を空気流発生装置まで案内すべく風路を形成する面で構成された吸込風路と、前記空気流発生装置により昇圧された空気をノズル開口部まで案内すべく風路を形成する面で構成された吹出風路を備え、前記ノズル開口部より高速風を発生させて手を乾燥させるように構成した手乾燥装置であって、前記吹出風路もしくは前記吸込風路中に遮音板を複数設置し、且つ少なくとも一枚について風路を形成する面のうち、対向する両面のうちの一方の面に接しないように設置したものである。 In order to achieve the above-mentioned goal, the hand drying device of the present invention has a suction port that is configured with a suction port for taking in outside air and a surface that forms a wind channel for guiding the air taken in from the suction port to the air flow generator. And a blowing air passage formed by a surface that forms an air passage for guiding the air pressurized by the air flow generator to the nozzle opening, and generates high-speed air from the nozzle opening to dry the hand. A hand drying device configured to allow a plurality of sound insulation plates to be installed in the blowing air passage or the suction air passage, and at least one of the opposing surfaces of the surfaces forming the air passage . It is installed so as not to touch one side .

また、吹出風路もしくは吸込風路、またはその両方の風路中に遮音板を複数設置し、且つ少なくとも一枚について空気流発生装置側の面に空気層を設けて吸音材を貼付したものである。これにより空気流発生装置から発生する運転音の内、特に耳障りな周波数帯において空気層厚みを調節することで吸音率を高くして効果的に消音しつつ、運転音が吹出風路及び吸込風路内をノズル開口部及び吸込口へ向かって伝播中に遮音されて外部への放射を抑制することができる手乾燥装置が得られる。   In addition, a plurality of sound insulation plates are installed in the air flow path and / or the air flow path, and at least one of them is provided with an air layer on the surface on the air flow generator side and a sound absorbing material is affixed. is there. As a result, among the operating sounds generated from the airflow generator, the operating sound is effectively muted by adjusting the air layer thickness in the annoying frequency band to effectively mute the sound, while the operating sound is blown out from the blowing air passage and the suction air. A hand-drying device is obtained that is sound-insulated during propagation through the passage toward the nozzle opening and the suction port, and can suppress radiation to the outside.

本発明によれば、吹出風路もしくは吸込風路中に遮音板を複数設置し、且つ少なくとも一枚について風路を形成する面のうち、対向する両面のうちの一方の面に接しないように設置したことによって、風路断面積を極端に狭くすることが無い為、圧力損失の増大を防止でき、且つ遮音効果のある手乾燥装置を提供できる。 According to the present invention, a plurality of sound insulation plates are installed in the blowing air passage or the suction air passage, and at least one of the surfaces forming the air passage is not in contact with one of the opposing surfaces. Since the air passage cross-sectional area is not extremely narrowed by the installation, an increase in pressure loss can be prevented and a hand drying device having a sound insulation effect can be provided.

また、吹出風路もしくは吸込風路、またはその両方の風路中に遮音板を複数設置し、且つ少なくとも一枚について空気流発生装置側の面に空気層を設けて吸音材を貼付したことにより空気流発生装置から発生する運転音の内、特に耳障りな周波数帯において空気層厚みを調節することで吸音率を高くして効果的に消音しつつ、運転音が吹出風路及び吸込風路内をノズル開口部及び吸込口へ向かって伝播中に遮音されて外部への放射を抑制することによって耳障りな騒音を低減でき、使用者または周囲に対して不快感を軽減できるとともに、静粛を要する施設においても設置が可能となるという効果のある手乾燥装置を提供できる。   In addition, by installing a plurality of sound insulation plates in the air flow path and / or the air flow path, and by attaching an air layer to the surface on the air flow generator side and attaching a sound absorbing material to at least one of the air flow paths While operating noise generated by the airflow generator, especially in an unpleasant frequency band, adjusting the air layer thickness to effectively mute the sound while increasing the sound absorption rate, the operating sound is in the blowout and suction airways This is a facility where noise can be reduced during propagation toward the nozzle opening and the suction port, thereby suppressing annoying noise, reducing discomfort to the user or the surroundings, and quietness. It is possible to provide a hand-drying device that can be installed even in

吹出風路もしくは吸込風路中に遮音板を複数設置し、且つ少なくとも一枚について風路を形成する面のうち、対向する両面のうちの一方の面に接しないように設置したものであり、風路断面積を極端に狭くすることが無い為、圧力損失の増大を防止でき、且つ遮音効果のある手乾燥装置を提供できるという作用を有する。 A plurality of sound insulation plates are installed in the blowout air passage or the suction air passage , and at least one of the surfaces forming the air passage is installed so as not to contact one of the opposing surfaces . Since the air passage cross-sectional area is not extremely narrowed, an increase in pressure loss can be prevented and a hand drying device having a sound insulation effect can be provided .

前記吹出風路もしくは前記吸込風路、またはその両方の風路中に前記遮音板を複数設置し、且つ少なくとも一枚について前記空気流発生装置側の面に空気層を設けて前記吸音材を貼付したものであり、前記空気流発生装置から発生する運転音の内、特に耳障りな周波数帯において前記空気層厚みを調節することで吸音率を高くして効果的に消音しつつ、運転音が前記吹出風路及び前記吸込風路内を前記ノズル開口部及び前記吸込口へ向かって伝播中に遮音されて外部への放射を抑制することができるという作用を有する。   A plurality of the sound insulation plates are installed in the blowing air passage, the suction air passage, or both of them, and at least one of them is provided with an air layer on the surface on the air flow generator side, and the sound absorbing material is attached. Among the operating sounds generated from the airflow generator, the operating noise is effectively reduced by effectively increasing the sound absorption rate by adjusting the thickness of the air layer in the annoying frequency band. The inside of the blowout air passage and the suction air passage is shielded during propagation toward the nozzle opening and the suction port, and has the effect that radiation to the outside can be suppressed.

以下、本発明の実施の形態について図面を参照しながら説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

参考例1)
図1〜図2に示すように、壁面にもしくは床面に固定された本体1は空気流発生装置2としての高速ターボブロワと外部に向かって開口し、手を挿入できる容積を持った手挿入部3を有し、前記手挿入部3の上部にノズル開口部4を備え、前記空気流発生装置2により吹出風路5を通って前記ノズル開口部4より高圧空気が吹出される。
( Reference Example 1)
As shown in FIGS. 1 and 2, the main body 1 fixed to the wall surface or the floor surface is opened toward the outside with a high-speed turbo blower as the air flow generator 2, and has a volume for inserting a hand. 3, a nozzle opening 4 is provided above the manual insertion portion 3, and high-pressure air is blown out from the nozzle opening 4 through the blowing air passage 5 by the air flow generator 2.

また、前記本体1内には制御手段6としてのマイコンを搭載した制御基盤を設け、前記ノズル開口部4の近傍には挿入された手を検知する検知手段7としての赤外線センサを設けることで、前記検知手段7の検知信号を前記制御手段6が受信して前記空気流発生装置2の駆動を制御している。   In addition, a control board equipped with a microcomputer as the control means 6 is provided in the main body 1, and an infrared sensor as a detection means 7 for detecting the inserted hand is provided in the vicinity of the nozzle opening 4. The control means 6 receives the detection signal from the detection means 7 and controls the driving of the airflow generator 2.

一方、吸込口8は前記手挿入部3内に設置された前記ノズル開口部4より手前に設置され、吸込風路9を通って前記空気流発生装置2に空気を供給している。   On the other hand, the suction port 8 is installed in front of the nozzle opening 4 installed in the manual insertion portion 3, and supplies air to the air flow generator 2 through the suction air passage 9.

また、水受け皿10と排水ダクト11は、前記手挿入部3より下に設けることにより手から分離された水滴は重力により前記手挿入部3の底面に集められ、前記排水ダクト11を通って前記水受け皿10に貯蔵されるように構成される。   Further, the water tray 10 and the drainage duct 11 are provided below the hand insertion part 3 so that water droplets separated from the hand are collected on the bottom surface of the hand insertion part 3 by gravity, and pass through the drainage duct 11 to It is configured to be stored in the water tray 10.

前記構成において、前記空気流発生装置2から発生する運転音が前記吹出風路5内及び前記吸込風路9内を伝播して前記ノズル開口部4及び前記吸込口8から外部への放射してしまう前に前記吹出風路5内及び前記吸込風路9内において複数の遮音板12を設置して音の伝播を抑制することにより外部へ放射する騒音を低減できる。   In the above configuration, the operation sound generated from the air flow generator 2 propagates through the blowout air passage 5 and the suction air passage 9 and radiates to the outside from the nozzle opening 4 and the suction port 8. The noise radiated to the outside can be reduced by installing a plurality of sound insulation plates 12 in the blowout air passage 5 and the suction air passage 9 to suppress the propagation of sound before the end.

設置する前記遮音板12の大きさとしては、風路内断面積に対して前記遮音板12の占める面積を大きくすれば効果は高いが、一般に空気流が通過する風路の断面積が1/2となると空気流の流速が2倍となり、圧力損失と呼ばれる通風抵抗は空気流の流速の2乗に比例し、4倍に増大するため前記空気流発生装置の仕事率を低下させてしまうので留意が必要である。また、同じく風路断面積が急拡大または急縮小する部分に空気流が流れ込むと風路断面積の変化により空気流の流速が変化するため圧力損失を増大させる要因となるので留意が必要である。   As the size of the sound insulating plate 12 to be installed, the effect is high if the area occupied by the sound insulating plate 12 is increased with respect to the cross-sectional area in the air passage, but generally the cross-sectional area of the air passage through which the air flow passes is 1 /. When it is 2, the flow velocity of the air flow is doubled, and the draft resistance called pressure loss is proportional to the square of the flow velocity of the air flow and increases four times, so the work rate of the air flow generator is reduced. Care must be taken. Also, it should be noted that if the airflow flows into the part where the airway cross-sectional area suddenly expands or contracts rapidly, the flow velocity of the airflow changes due to the change in the airway cross-sectional area, which increases the pressure loss. .

また、設置する前記遮音板12の材質としては、可能な限り密度が高く、且つ厚みを持たせる方が良い。何故ならば、前記遮音板12の遮音性能を表す透過損失は前記遮音板12の面密度、すなわち前記遮音板12の密度と厚みの積に比例するからである。実際に商品とする際、前記遮音板12の材質は亜鉛鋼板などの金属とする方が良いが、一般的にコストを低く抑えるために風路を合成樹脂で製作することが多いため、前記遮音板12を同一材質で一体成型しても良い。   Moreover, as a material of the said sound insulation board 12 to install, it is better to give the density as high as possible and to have thickness. This is because the transmission loss representing the sound insulation performance of the sound insulation plate 12 is proportional to the surface density of the sound insulation plate 12, that is, the product of the density and thickness of the sound insulation plate 12. When actually making a product, the sound insulation plate 12 is preferably made of a metal such as a galvanized steel plate. However, since the air passage is generally made of a synthetic resin in order to keep the cost low, the sound insulation plate 12 The plate 12 may be integrally formed of the same material.

前記遮音板12の大きさ、材質は以下の参考例2から4、実施の形態1、2においても同様である。 The size and material of the sound insulating plate 12 are the same in the following Reference Examples 2 to 4 and Embodiments 1 and 2 .

参考例2)
図3のように、遮音板12を吹出風路5内及び吸込風路9内に複数設置する際、前記遮音板12を平行に設置することにより前記遮音板12で挟まれた空間においては断面積の変化がなく、圧力損失の増大を防止しつつ遮音効果が得られる構成となる。
( Reference Example 2)
As shown in FIG. 3, when a plurality of sound insulation plates 12 are installed in the blowout air passage 5 and the suction air passage 9, the sound insulation plates 12 are installed in parallel so that the space between the sound insulation plates 12 is disconnected. There is no change in area, and a sound insulation effect can be obtained while preventing an increase in pressure loss.

また、一直線上とならないように設置することで風路断面積が極端に縮小されることが無い為、圧力損失の増大を防止でき、且つ風路の長さを長く取れる為に伝播する音の距離減衰効果が得られ、騒音の低減効果が高い。   Moreover, since the air passage cross-sectional area is not extremely reduced by installing it so as not to be in a straight line, it is possible to prevent an increase in pressure loss and to increase the length of the air passage so that the sound that propagates can be prevented. A distance attenuation effect is obtained, and a noise reduction effect is high.

また、図3の矢印のように少なくとも1枚を空気流の流線に対して垂直となる角度に設置することにより伝播する空気流発生装置2の運転音を垂直に反射でき、遮音の効果を高められ、外部に放射される騒音を低減できる。   Further, by installing at least one sheet at an angle perpendicular to the air flow stream line as shown by the arrows in FIG. 3, the propagating operation sound of the air flow generator 2 can be reflected vertically, and the sound insulation effect can be obtained. The noise emitted to the outside can be reduced.

また、図3の矢印のように風路中に空気流の流線がいずれかの前記遮音板12によって必ず遮られるように設置することにより、風路断面内の全面において伝播する前記空気流発生装置2の運転音が直接ノズル開口部4及び吸込口8から外部に放射する事無く遮音できる為、騒音を低減できる。   In addition, by installing the air flow streamline so as to be obstructed by any of the sound insulation plates 12 as indicated by the arrows in FIG. Since the operation sound of the apparatus 2 can be sound-insulated without directly radiating from the nozzle opening 4 and the suction port 8 to the outside, noise can be reduced.

また、上記構成を組み合わせることで、前記遮音板12を設置した際の遮音効果をより高めることができる。   Moreover, the sound insulation effect at the time of installing the said sound insulation board 12 can be heightened more by combining the said structure.

(実施の形態
図4のように、風路中に遮音板12を複数設置する際、吹出風路5を吹出風路下部5Aと吹出風路上部5Bの2部品を組み合わせて風路を形成した場合には、前記吹出風路下部5Aより立設する前記遮音板12を前記吹出風路上部5Bに接しないように設置することにより、風路断面積を極端に狭くすることが無い為、圧力損失の増大を防止でき、且つ遮音効果のある構成となる。
(Embodiment 1 )
As shown in FIG. 4, when a plurality of sound insulation plates 12 are installed in the air passage, when the air passage is formed by combining the blowout air passage 5 with the two parts of the air outlet lower portion 5A and the air outlet upper portion 5B, By installing the sound insulation plate 12 erected from the lower part 5A of the blowout air passage so as not to contact the upper part 5B of the blowout airway, the cross-sectional area of the airway is not extremely narrowed, thereby increasing the pressure loss. It can be prevented and has a sound insulation effect.

参考例3
また、図5のように、風路内に設置した遮音板12の一部に曲率をつけることにより、前記遮音板12の角に空気流が流れる際に乱流の発生を抑えることができる為、乱流による騒音が抑えられることにより外部へ放射される騒音を軽減できる。
( Reference Example 3 )
In addition, as shown in FIG. 5, by providing a curvature to a part of the sound insulating plate 12 installed in the air passage, it is possible to suppress the occurrence of turbulence when an air flow flows through the corner of the sound insulating plate 12. The noise radiated to the outside can be reduced by suppressing the noise caused by the turbulent flow.

参考例4
図6のように、遮音板12を吹出風路5内及び吸込風路9内に複数設置する際、少なくとも一枚について空気流発生装置2側の面に吸音材13、例えばウレタンフォームなどの多孔質材やグラスウールなどの繊維質でできたものを貼付することにより、前記吸音材13に入射した音エネルギーは熱エネルギーに変換されて消音され、且つ、遮音効果として運転音が風路を通ってノズル開口部4または吸込口8から外部への放射を抑制することとなる。また、発生する騒音の全周波数を低減するために吸音率の異なった複数種類の前記吸音材13を選定すること、または前記空気流発生装置2の運転音で特に耳障りな騒音として周波数400〜500Hzと3〜4kHz間のピーク音があるので、これを低減する為に前記吸音材13の吸音率を400〜500Hzと3〜4kHzで最も効果のある種類を選定することも有効な手段である。
( Reference Example 4 )
As shown in FIG. 6, when a plurality of sound insulating plates 12 are installed in the blowout air passage 5 and the suction airway 9, at least one of the sound absorbing materials 13, such as a urethane foam, is formed on the surface on the air flow generator 2 side. By pasting a material made of fibrous material such as a material or glass wool, the sound energy incident on the sound absorbing material 13 is converted into heat energy and muffled, and the operation sound passes through the air path as a sound insulation effect. Radiation from the nozzle opening 4 or the suction port 8 to the outside will be suppressed. Further, in order to reduce the total frequency of the generated noise, a plurality of types of the sound absorbing material 13 having different sound absorption rates are selected, or the frequency 400 to 500 Hz as particularly annoying noise due to the operation sound of the air flow generator 2. In order to reduce this, it is also an effective means to select the most effective type of the sound absorbing material 13 at 400 to 500 Hz and 3 to 4 kHz.

(実施の形態
図7のように、遮音板12を吹出風路5内及び吸込風路9内に複数設置する際、少なくとも一枚について空気流発生装置2側の面に空気層14を設けて吸音材13を貼付することにより前記吸音材13のもつ吸音特性を低周波側に移行させることができる。すなわち前記吸音材13の吸音特性として、2kHz以上の高周波はよく吸音するが、500Hz以下の低周波では吸音特性が低いという性質があるため、前記空気流発生装置2の400〜500Hzにあるピーク音や空気流の乱れによる通風音等の低周波騒音に対して効果がある。また、前記空気層14の厚みとしては、低減する周波数の波長長さに対して1/4倍となるように前記空気層14の厚みを持たせると低減効果が大きく、より低騒音な手乾燥装置を提供することが可能となる。
(Embodiment 2 )
As shown in FIG. 7, when a plurality of the sound insulating plates 12 are installed in the blowing air passage 5 and the suction air passage 9, at least one of the sound insulating plates 12 is provided with an air layer 14 on the surface on the air flow generator 2 side so that the sound absorbing material 13 is provided. By sticking, the sound absorption characteristic of the sound absorbing material 13 can be shifted to the low frequency side. That is, as the sound absorption characteristics of the sound absorbing material 13, a high frequency of 2 kHz or more often absorbs sound, but a low frequency of 500 Hz or less has a low sound absorption characteristic, so that the peak sound at 400 to 500 Hz of the air flow generator 2 is present. It is effective against low-frequency noise such as ventilation sound caused by turbulence and air flow. Further, as the thickness of the air layer 14, if the thickness of the air layer 14 is made to be 1/4 times the wavelength length of the frequency to be reduced, the air layer 14 has a large reduction effect, and is less dry by hand drying. An apparatus can be provided.

以下、実施の形態より前記空気層14の設置手段について説明する。 Hereinafter, the installation means of the air layer 14 will be described from the third embodiment.

(実施の形態
空気層14を設ける方法として、図8のように遮音板12の面から複数リブ15を立て、前記リブ15の前記遮音板12に隣接しない面に吸音材13を貼付してもよい。貼り付け方法としては、接着剤などの粘着性のある物質を前記吸音材13の片面もしくは前記リブ15の前記吸音材13貼付面に塗布すること、または前記吸音材13の片面がのり面加工となっているものであると作業性がよい。また、前記遮音板12に前記リブ15を設置することにより空気流の衝突による前記リブ15の変形を防止できる。また、組立て作業時や運搬時に前記遮音板12の破損トラブルになりにくい。
(Embodiment 3 )
As a method of providing the air layer 14, a plurality of ribs 15 may be raised from the surface of the sound insulating plate 12 as shown in FIG. 8, and the sound absorbing material 13 may be attached to the surface of the rib 15 that is not adjacent to the sound insulating plate 12. As an affixing method, an adhesive substance such as an adhesive is applied to one side of the sound absorbing material 13 or the affixing surface of the sound absorbing material 13 of the rib 15, or one side of the sound absorbing material 13 is applied to a surface finish. If it is, workability is good. Further, by installing the rib 15 on the sound insulating plate 12, it is possible to prevent the rib 15 from being deformed by an air flow collision. In addition, the sound insulation plate 12 is less likely to be damaged during assembly work or transportation.

(実施の形態
空気層14を設ける方法として、図9のようにリブ15は遮音板12の面と風路を形成
する少なくとも一面に接するように立設させ、前記遮音板12に隣接しない面に吸音材13を貼付しても前記空気層14を設けることができ、且つ、前記遮音板12の強度が上がることから空気流の衝突による前記リブ15の変形を防止できる。また、組立て作業時や運搬時に前記遮音板12の破損トラブルになりにくい。
(Embodiment 4 )
As a method of providing the air layer 14, as shown in FIG. 9, the rib 15 is erected so as to be in contact with at least one surface forming the air passage with the surface of the sound insulating plate 12, and the sound absorbing material 13 is provided on the surface not adjacent to the sound insulating plate 12. Even if affixed, the air layer 14 can be provided and the strength of the sound insulating plate 12 is increased, so that deformation of the rib 15 due to collision of airflow can be prevented. In addition, the sound insulation plate 12 is less likely to be damaged during assembly work or transportation.

(実施の形態
空気層14を設ける方法として、図10のように遮音板12の面より支柱16を立設させ、その頂点部分に吸音材13を貼り付ける方法もある。また、前記支柱16の形状は円柱でもよいし、多角形であってもよい。
(Embodiment 5 )
As a method of providing the air layer 14, there is also a method in which the support column 16 is erected from the surface of the sound insulating plate 12 as shown in FIG. Further, the column 16 may have a cylindrical shape or a polygonal shape.

ここで、実施の形態及び記載のリブ15とは、一般的に機械的強度を向上させることを目的として設置されるものであり、前記リブ15の形状を前記空気層14を確保して吸音材13を貼付できるように工夫したことがねらいである。また、前記支柱16とは前記空気層14を確保して前記吸音材13を貼付することのみを目的としたものである。 Here, the rib 15 described in the third and fourth embodiments is generally installed for the purpose of improving the mechanical strength, and the shape of the rib 15 is secured to the air layer 14. The aim is to devise so that the sound absorbing material 13 can be attached. Further, the column 16 is intended only for securing the air layer 14 and attaching the sound absorbing material 13.

(実施の形態
空気層14を設ける方法として、図11のように、風路を形成する少なくとも一面よりリブ15を立設させ、遮音板12と平行な面に吸音材13を貼付して前記空気層14を設けてもよい。
(Embodiment 6 )
As a method for providing the air layer 14, as shown in FIG. 11, the rib 15 is erected from at least one surface forming the air passage, and the sound layer 13 is attached to a surface parallel to the sound insulating plate 12 to provide the air layer 14. May be.

(実施の形態
空気層14を設ける方法として、図12のように、風路を形成する少なくとも一面より支柱16を立設させ、遮音板12と平行に吸音材13を貼付して前記空気層14を設けてもよい。また、前記支柱16の形状は円柱でもよいし、多角形であってもよい。
(Embodiment 7 )
As a method of providing the air layer 14, as shown in FIG. 12, the support 16 may be erected from at least one surface forming the air passage, and the sound absorbing material 13 may be attached in parallel to the sound insulating plate 12 to provide the air layer 14. Good. Further, the column 16 may have a cylindrical shape or a polygonal shape.

(実施の形態
空気層14を設ける方法として、図13のように、遮音板12から前記空気層14の厚みを確保できる距離と、吸音材13を挟み込んで保持できる距離に風路を形成する少なくとも一面よりリブ15を立設させ、前記吸音材13を挟み込んで前記空気層14を設けたことにより、接着手段を設けずに前記吸音材13を設置可能となることから材料コストを抑えることができる。
(Embodiment 8 )
As a method of providing the air layer 14, as shown in FIG. 13, the rib 15 is formed from at least one surface that forms an air passage at a distance that can secure the thickness of the air layer 14 from the sound insulating plate 12 and a distance that can sandwich and hold the sound absorbing material 13. Since the sound absorbing material 13 is sandwiched and the air layer 14 is provided, the sound absorbing material 13 can be installed without providing an adhesive means, so that the material cost can be reduced.

(実施の形態
空気層14を設ける方法として、図14のように、遮音板12から前記空気層14の厚みを確保できる距離と、吸音材13を挟み込んで保持できる距離に風路を形成する少なくとも一面より支柱16を立設させ、前記吸音材13を挟み込んで前記空気層14を設けても実施の形態12と同様の効果が得られる。
(Embodiment 9 )
As a method of providing the air layer 14, as shown in FIG. 14, the column 16 is formed from at least one surface that forms an air passage at a distance that can secure the thickness of the air layer 14 from the sound insulating plate 12 and a distance that can sandwich and hold the sound absorbing material 13. The same effect as in the twelfth embodiment can be obtained by providing the air layer 14 with the sound absorbing material 13 interposed therebetween.

本発明にかかる手乾燥装置は、吹出風路もしくは吸込風路、またはその両方の風路中に遮音板を複数設置したものである。これにより空気流発生装置から発生する運転音が吹出風路及び吸込風路内をノズル開口部及び吸込口へ向かって伝播中に遮音されて外部への放射を抑制することができ、手乾燥装置より発生する騒音において耳障りな空気流発生装置の運転音を低減することができるという効果がある。   The hand drying device according to the present invention is a device in which a plurality of sound insulation plates are installed in the blowing air passage and / or the suction air passage. As a result, the operation sound generated from the air flow generator is sound-insulated while propagating through the blowout air passage and the suction air passage toward the nozzle opening and the suction opening, and can be prevented from radiating to the outside. There is an effect that it is possible to reduce the operation sound of the airflow generator that is harsh in the generated noise.

よって、洗面所やトイレ等で手を洗い、濡れた手を乾燥させる装置等に有効であり、また、一般的に液体によって濡れたものを乾燥させる用途としても適用できる。   Therefore, it is effective for an apparatus for washing hands in a washroom, a toilet, etc., and drying wet hands, and can also be applied as a use for drying things that are generally wet with liquid.

参考例1の構造を示す正面断面図Front sectional view showing the structure of Reference Example 1 同側断面図Cross-sectional side view 参考例2の風路を示す部分断面図Partial sectional view showing the air path of Reference Example 2 本発明の実施の形態の風路を示す部分断面図The fragmentary sectional view which shows the air path of Embodiment 1 of this invention 参考例3の風路を示す部分断面図Partial sectional view showing the air path of Reference Example 3 参考例4の風路を示す部分断面図Partial sectional view showing the air path of Reference Example 4 本発明の実施の形態の風路を示す部分断面図The fragmentary sectional view which shows the air path of Embodiment 2 of this invention 本発明の実施の形態の吸音材設置手段を示す部分斜視図The partial perspective view which shows the sound-absorbing material installation means of Embodiment 3 of this invention 本発明の実施の形態の吸音材設置手段を示す部分斜視図The partial perspective view which shows the sound-absorbing material installation means of Embodiment 4 of this invention 本発明の実施の形態の吸音材設置手段を示す部分斜視図The partial perspective view which shows the sound-absorbing material installation means of Embodiment 5 of this invention 本発明の実施の形態の吸音材設置手段を示す部分斜視図The partial perspective view which shows the sound-absorbing material installation means of Embodiment 6 of this invention 本発明の実施の形態の吸音材設置手段を示す部分斜視図The partial perspective view which shows the sound-absorbing material installation means of Embodiment 7 of this invention 本発明の実施の形態の吸音材設置手段を示す部分斜視図The partial perspective view which shows the sound-absorbing material installation means of Embodiment 8 of this invention 本発明の実施の形態の吸音材設置手段を示す部分斜視図The partial perspective view which shows the sound-absorbing material installation means of Embodiment 9 of this invention 従来例の構成を示す断面図Sectional drawing which shows the structure of a prior art example

符号の説明Explanation of symbols

1 本体
2 空気流発生手段
3 手挿入部
4 ノズル開口部
5 吹出風路
5A 吹出風路下部
5B 吹出風路上部
6 制御手段
7 検知手段
8 吸込口
9 吸込風路
10 水受け皿
11 排水ダクト
12 遮音板
13 吸音材
14 空気層
15 リブ
16 支柱

DESCRIPTION OF SYMBOLS 1 Main body 2 Air flow generation means 3 Hand insertion part 4 Nozzle opening part 5 Outlet air path 5A Outlet air path lower part 5B Outlet air path upper part 6 Control means 7 Detection means 8 Suction port 9 Suction air path 10 Water catcher 11 Drain duct 12 Sound insulation Plate 13 Sound absorbing material 14 Air layer 15 Rib 16 Prop

Claims (9)

外気を取り入れる吸込口と、前記吸込口から取り込んだ空気を空気流発生装置まで案内すべく風路を形成する面で構成された吸込風路と、前記空気流発生装置により昇圧された空気をノズル開口部まで案内すべく風路を形成する面で構成された吹出風路を備え、前記ノズル開口部より高速風を発生させて手を乾燥させるように構成した手乾燥装置であって、前記吹出風路もしくは前記吸込風路中に遮音板を複数設置し、且つ少なくとも一枚について風路を形成する面のうち、対向する両面のうちの一方の面に接しないように設置したことを特徴とする手乾燥装置。   A suction port for taking in outside air, a suction air passage formed by a surface that forms an air passage for guiding the air taken in from the suction port to the air flow generation device, and a nozzle for increasing the pressure of the air flow generation device A hand-drying device comprising a blow-off air passage configured by a surface forming an air passage to guide to an opening, and configured to dry a hand by generating high-speed air from the nozzle opening, A plurality of sound insulation plates are installed in the air passage or the suction air passage, and at least one of the surfaces forming the air passage is installed so as not to contact one of the opposing surfaces. Hand drying equipment. 外気を取り入れる吸込口と、前記吸込口から取り込んだ空気を空気流発生装置まで案内すべく風路を形成する面で構成された吸込風路と、前記空気流発生装置により昇圧された空気をノズル開口部まで案内すべく風路を形成する面で構成された吹出風路を備え、前記ノズル開口部より高速風を発生させて手を乾燥させるように構成した手乾燥装置であって、前記吹出風路もしくは前記吸込風路中に遮音板を複数設置し、且つ少なくとも一枚について空気流発生装置側の面に空気層を設けて吸音材を貼付したことを特徴とする手乾燥装置。 A suction port for taking in outside air, a suction air passage formed by a surface that forms an air passage for guiding the air taken in from the suction port to the air flow generation device, and a nozzle for increasing the pressure of the air flow generation device A hand-drying device comprising a blow-off air passage configured by a surface forming an air passage to guide to an opening, and configured to dry a hand by generating high-speed air from the nozzle opening, A hand-drying device, wherein a plurality of sound insulation plates are installed in an air passage or the suction air passage, and an air layer is provided on a surface on the air flow generation device side of at least one of them and a sound absorbing material is attached. 空気層を設ける方法として、遮音板の面よりリブを立設させ、遮音板に隣接しない面に吸音材を貼付したことを特徴とする請求項2記載の手乾燥装置。 3. The hand dryer according to claim 2, wherein the air layer is provided by providing a rib from the surface of the sound insulation plate and attaching a sound absorbing material to a surface not adjacent to the sound insulation plate. 遮音板の面と風路を形成する少なくとも一面に接するリブを立設させ、遮音板に隣接しない面に吸音材を貼付して空気層を設けたことを特徴とする請求項2記載の手乾燥装置。   3. The hand dryer according to claim 2, wherein a rib contacting the surface of the sound insulating plate and at least one surface forming an air passage is erected, and a sound absorbing material is attached to a surface not adjacent to the sound insulating plate to provide an air layer. apparatus. 遮音板の面より支柱を立設させ、遮音板に隣接しない面に吸音材を貼付して空気層を設けたことを特徴とする請求項2記載の手乾燥装置。   The hand-drying device according to claim 2, wherein a support is erected from the surface of the sound insulation plate, and an air layer is provided by attaching a sound absorbing material to a surface not adjacent to the sound insulation plate. 遮音板から一定の距離を保つ位置に、且つ風路を形成する少なくとも一面よりリブを立設させ、前記リブの前記遮音板と平行な面に吸音材を貼付して空気層を設けたことを特徴とする請求項2記載の手乾燥装置。   A rib is erected from a position that keeps a certain distance from the sound insulating plate and from at least one surface forming an air passage, and an air layer is provided by attaching a sound absorbing material to a surface parallel to the sound insulating plate of the rib. The hand dryer according to claim 2. 遮音板から一定の距離を保つ位置に、且つ風路を形成する少なくとも一面より支柱を立設させ、前記支柱に対して吸音材を貼付して空気層を設けたことを特徴とする請求項2記載の手乾燥装置。   3. A support column is erected from a position that keeps a certain distance from the sound insulation plate and from at least one surface that forms an air passage, and an air layer is provided by attaching a sound absorbing material to the support column. The hand dryer described. 遮音板から空気層厚みを確保できる距離と、吸音材を挟み込んで保持できる距離に風路を形成する少なくとも一面よりリブを立設させ、前記リブの間に吸音材を挟み込んで空気層を設けたことを特徴とする請求項2記載の手乾燥装置。   Ribs are provided upright from at least one surface forming the air path at a distance that can secure the air layer thickness from the sound insulating plate and at a distance that can hold and hold the sound absorbing material, and an air layer is provided by inserting the sound absorbing material between the ribs. The hand dryer according to claim 2. 遮音板から空気層厚みを確保できる距離と、吸音材を挟み込んで保持できる距離に風路を形成する少なくとも一面より支柱を立設させ、前記支柱の間に吸音材を挟み込んで空気層を設けたことを特徴とする請求項2記載の手乾燥装置。   A strut is erected from at least one surface that forms an air path at a distance that can secure the air layer thickness from the sound insulating plate and a distance that can hold and hold the sound absorbing material, and an air layer is provided by sandwiching the sound absorbing material between the struts. The hand dryer according to claim 2.
JP2004281821A 2004-09-28 2004-09-28 Hand dryer Active JP4086026B2 (en)

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