JP2013172807A - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
JP2013172807A
JP2013172807A JP2012038444A JP2012038444A JP2013172807A JP 2013172807 A JP2013172807 A JP 2013172807A JP 2012038444 A JP2012038444 A JP 2012038444A JP 2012038444 A JP2012038444 A JP 2012038444A JP 2013172807 A JP2013172807 A JP 2013172807A
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vacuum cleaner
noise
electric blower
electric
space
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JP5899399B2 (en
Inventor
Hideya Tsuchida
英也 土田
Michimoto Koga
理基 古賀
Koji Nanba
康二 難波
Tatsuo Yoshikawa
達夫 吉川
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Panasonic Corp
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Panasonic Corp
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Priority to JP2012038444A priority Critical patent/JP5899399B2/en
Priority to PCT/JP2012/007970 priority patent/WO2013124939A1/en
Priority to CN201280070213.0A priority patent/CN104159488B/en
Publication of JP2013172807A publication Critical patent/JP2013172807A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner reduced in noise at an operation while maintaining high suction force.SOLUTION: A vacuum cleaner includes a support member 13 covering a front outer periphery part of an electric fan 8, and an annular straightening vane 17 having an opening 27 and a holding portion 29 held by an inclined portion 28 directed to a suction port 11 of a fan case 10. The straightening vane 17 is disposed by providing a gap 30 between the straightening vane 17 and a suction guide 12 in a state of being held by the supporting member 13, and a muffling chamber 22 is formed in a space between the inclined portion 28 and the holding portion 29, thereby, the noise in a suction air flow accompanied by air flow noise generated in a vicinity of the suction port 11 of the electric fan 8 enters and resonates from the gap 30 to a muffling space 31 formed of the muffling chamber 22 and the muffling effect of Helmholtz resonator is obtained, and the noise is attenuated.

Description

本発明は運転時の騒音を低減する電気掃除機に関するものである。   The present invention relates to a vacuum cleaner that reduces noise during operation.

従来の電気掃除機は、図９に示すように、吸引風を発する電動送風機８と、この電動送風機８の上流側に集塵用フィルター５を搭載し、前記集塵用フィルター５には塵埃及び空気が流入されて塵埃と空気は分離され、塵埃は前記集塵用フィルター５内に留まり、空気は前記集塵用フィルター５の後部に設置された電動送風機８に向かって流れる。
さらに、前記電動送風機８の吸気口１１近傍の整流作用向上のための整流板１７を、ゴムなどの軟質材からなるサポート部材１３に挟持し、電動送風機８の吸気口１１を形成する吸気ガイド１２に当接させて隙間を開けない構成として取り付けていた（例えば、特許文献１参照）。 As shown in FIG. 9, the conventional vacuum cleaner is equipped with an electric blower 8 that generates suction air and a dust collection filter 5 on the upstream side of the electric blower 8. Air is introduced to separate the dust and air, the dust stays in the dust collecting filter 5, and the air flows toward the electric blower 8 installed at the rear of the dust collecting filter 5.
Further, a rectifying plate 17 for improving the rectifying action in the vicinity of the intake port 11 of the electric blower 8 is sandwiched between support members 13 made of a soft material such as rubber, and an intake guide 12 that forms the intake port 11 of the electric blower 8. It was attached as the structure which is made to contact | abut and does not open a clearance gap (for example, refer patent document 1).

特開２０１１−１０６４０８号公報JP 2011-106408 A

しかしながら、このような従来の掃除機では、空気が集塵用フィルター５を通って電動送風機８に向かって流れたときに、電動送風機８の吸気口１１近傍では、整流作用向上のための整流板１７を、ゴムなどの軟質材からなるサポート部材１３に挟持し、電動送風機８の吸気ガイド１２に当接させて隙間を開けない構成として取り付けていたため、電動送風機８の吸込み性能は向上するが、空気を吸込む際の風切り音等は掃除機本体４の外部に伝わるので、騒音が発生するという課題を有していた。   However, in such a conventional vacuum cleaner, when air flows through the dust collecting filter 5 toward the electric blower 8, in the vicinity of the intake port 11 of the electric blower 8, a rectifying plate for improving the rectifying action. 17 is sandwiched between support members 13 made of a soft material such as rubber, and attached to the intake guide 12 of the electric blower 8 so as not to open a gap, so that the suction performance of the electric blower 8 is improved. Since wind noise generated when air is sucked is transmitted to the outside of the main body 4 of the cleaner, there is a problem that noise is generated.

本発明は上記のような問題点を解決するものであり、運転時の騒音の低減を実現することのできる掃除機を提供することを目的とするものである。   This invention solves the above problems, and it aims at providing the vacuum cleaner which can implement | achieve reduction of the noise at the time of driving | operation.

上記課題を解決するため、本発明の掃除機は、電動機と、前記電動機の回転軸に固定され回転駆動されるインペラファンと、吸気口を有し前記インペラファンを覆うファンケースと、前記ファンケースに固定され前記吸気口を形成する吸気ガイドと、からなる電動送風機と、前記電動送風機の前方外周部の一部を覆うサポート部材と、開口部を備え前記ファンケースの吸気口に向かう傾斜部と前記サポート部材に挟持される保持部とを有する環形状の整流板と、を備え、前記整流板は、前記サポート部材に挟持された状態において、前記整流板と前記吸気ガイドとの間に隙間を設けて配置され、かつ前記傾斜部と前記保持部との間の空間において消音室を形成するように構成したものである。
上記構成により、電動送風機の吸込口近傍で発生する風切り音を、整流板と電動送風機の吸気口を形成する吸気ガイドとの間に隙間を設け、かつ消音室を備えることによって、消音室に入り込んだ空気は、消音室内で共鳴することにより、ヘルムホルツ共鳴器と同一の消音効果が得られ、騒音や吸込み時の風切り音を減衰させることが可能となる。 In order to solve the above-described problems, a vacuum cleaner according to the present invention includes an electric motor, an impeller fan fixed to a rotating shaft of the electric motor and driven to rotate, a fan case having an air inlet and covering the impeller fan, and the fan case An air intake guide that is fixed to the air inlet and forms an air inlet, a support member that covers a part of the front outer periphery of the electric air fan, an inclined portion that includes an opening and faces the air inlet of the fan case, A ring-shaped rectifying plate having a holding portion sandwiched between the support members, and the rectifying plate has a gap between the rectifying plate and the intake guide in a state of being sandwiched between the support members. A silencer chamber is formed in the space between the inclined portion and the holding portion.
With the above configuration, wind noise generated in the vicinity of the suction opening of the electric blower enters the noise reduction chamber by providing a gap between the rectifying plate and the intake guide forming the intake opening of the electric blower and including the noise reduction chamber. The air resonates in the silencer chamber, so that the same silencing effect as the Helmholtz resonator can be obtained, and noise and wind noise during suction can be attenuated.

本発明の電気掃除機は、運転時の電動送風機から発生する騒音や吸込み時の風切り音を低減することができる。   The electric vacuum cleaner of the present invention can reduce noise generated from the electric blower during operation and wind noise during suction.

本発明の実施の形態１における電気掃除機の全体斜視図Whole perspective view of the electric vacuum cleaner in Embodiment 1 of this invention 同、電気掃除機の掃除機本体の中央縦断面図Same as above, central section of the vacuum cleaner body 同、電気掃除機の整流板の前方斜視図Same as above, front perspective view of rectifier plate of vacuum cleaner 同、電気掃除機の整流板の後方斜視図The rear perspective view of the current plate of the vacuum cleaner 本発明の第２実施の形態における整流板の後方斜視図The rear perspective view of the baffle plate in 2nd Embodiment of this invention 本発明の第３実施の形態におけるサポート部材に支持された整流板の後方斜視図The rear perspective view of the baffle plate supported by the support member in 3rd Embodiment of this invention 本発明の第４実施の形態におけるサポート部材に支持された整流板の後方斜視図The rear perspective view of the baffle plate supported by the support member in 4th Embodiment of this invention 本発明の第５実施の形態における電動送風機にサポート部材を介して支持された整流板の前方斜視図The front perspective view of the baffle plate supported through the support member by the electric blower in 5th Embodiment of this invention 従来の電気掃除機の掃除機本体の中央縦断面図Center vertical section of the vacuum cleaner body of a conventional vacuum cleaner

第１の発明は、電動機と、前記電動機の回転軸に固定され回転駆動されるインペラファンと、吸気口を有し前記インペラファンを覆うファンケースと、前記ファンケースに固定され前記吸気口を形成する吸気ガイドと、からなる電動送風機と、前記電動送風機の前方外周部の一部を覆うサポート部材と、開口部を備え前記ファンケースの吸気口に向かう傾斜部と前記サポート部材に挟持される保持部とを有する環形状の整流板と、を備え、前記整流板は、前記サポート部材に挟持された状態において、前記整流板と前記吸気ガイドとの間に隙間を設けて配置され、かつ前記傾斜部と前記保持部との間の空間において消音室を形成するように構成したものである。
これにより、電動送風機の吸込口近傍で発生する風切り音を伴った吸引空気中の騒音が、ゴムなどの軟質材からなるサポート部材に挟持した整流板と電動送風機の吸気ガイドとの間に設けた隙間から、整流板の内側に設けた消音室により形成された消音空間に入り込む。前記消音空間に入り込んだ空気は、消音空間で共鳴することにより、ヘルムホルツ共鳴器と同一の消音効果が得られ、騒音や吸込み時の風切り音を減衰させることが可能となる。
また、整流板は、ファンケースに取着されたサポート部材に挟持された状態において、整流板と吸気ガイドとの間に隙間を設けて配置されているため、電動送風機の回転に伴う振動が整流板に伝わって共振する騒音や、空気を吸込む際の風切り音等が電動送風機に伝わって発生する騒音等が、掃除機本体の外部へ伝搬することを減少させることができる。 According to a first aspect of the present invention, there is provided an electric motor, an impeller fan fixed to a rotating shaft of the electric motor and driven to rotate, a fan case having an air inlet and covering the impeller fan, and fixed to the fan case to form the air inlet An electric blower comprising: an air intake guide; a support member that covers a part of a front outer peripheral portion of the electric air blower; an inclined portion that includes an opening and faces the air intake port of the fan case; and a holding member that is sandwiched between the support members An annular flow straightening plate, and the flow straightening plate is disposed with a gap between the flow straightening plate and the intake guide in a state of being sandwiched between the support members, and the inclined plate A silencer chamber is formed in the space between the part and the holding part.
Thereby, the noise in the suction air accompanied by wind noise generated near the suction port of the electric blower is provided between the current plate sandwiched between the support members made of a soft material such as rubber and the intake guide of the electric blower. From the gap, it enters the noise reduction space formed by the noise reduction chamber provided inside the current plate. The air that has entered the silencing space resonates in the silencing space, so that the same silencing effect as the Helmholtz resonator can be obtained, and noise and wind noise during suction can be attenuated.
In addition, since the rectifying plate is disposed with a gap between the rectifying plate and the air intake guide in a state where the rectifying plate is sandwiched between the support members attached to the fan case, the vibration accompanying the rotation of the electric blower is rectified. It is possible to reduce propagation of noise that is transmitted to the plate and resonates, or noise that is generated by wind noise generated when air is sucked to the electric blower, to the outside of the cleaner body.

第２の発明は、特に第１の発明において、消音室の内周に防音材を配設したものである。
これにより、前記消音空間に入り込んだ音は、消音空間で共鳴することにより、ヘルムホルツ共鳴器と同一の消音効果が得られ、さらに、消音室内の防音材により消音されるため、騒音や吸込み時の風切り音を減衰させることが可能となる。 In the second invention, in particular, in the first invention, a soundproofing material is disposed on the inner periphery of the sound deadening chamber.
Thereby, the sound that has entered the silencing space is resonated in the silencing space, so that the same silencing effect as the Helmholtz resonator is obtained, and further, the sound is silenced by the soundproofing material in the silencing chamber. Wind noise can be attenuated.

第３の発明は、特に第１または第２の発明において、消音室をリブにより仕切ることで、複数の消音室を形成したものである。
これにより、複数の消音室の各々の空間体積が小さくできるため、高い周波数の音を効果的に低減させることができる。この効果は、空間体積の小さい消音室の方が、高い周波数の音を低減させるのに効果的であるヘルムホルツ共鳴器による消音効果特性から実証されていることに準じるものである。 According to a third invention, in particular in the first or second invention, a plurality of sound deadening chambers are formed by partitioning the sound deadening chambers by ribs.
Thereby, since the space volume of each of the plurality of muffler chambers can be reduced, high-frequency sound can be effectively reduced. This effect is based on the fact that the muffler chamber with a smaller spatial volume is proved by the muffler effect characteristic of the Helmholtz resonator, which is more effective in reducing high-frequency sound.

第４の発明は、特に第３の発明において、複数の消音室の空間体積が異なるようにリブを配列させたものである。
これにより、複数の消音室の各々の空間体積を異なる大きさにできるため、周波数の異な
る音の消音効果が得られ、異なる周波数の騒音や吸込み時の風切り音を減衰させることが可能となる。 According to a fourth aspect of the invention, in particular, in the third aspect of the invention, the ribs are arranged so that the space volumes of the plurality of noise reduction chambers are different.
Thereby, since each space volume of a plurality of sound deadening rooms can be made into a different size, the sound deadening effect of the sound with different frequency is obtained, and it becomes possible to attenuate the noise with different frequency and the wind noise at the time of suction.

第５の発明は、特に第１〜４のいずれか１つの発明の電気掃除機において、整流板の開口部の内径の方が電動送風機に備えた吸気口の内径よりも大きくしたものである。
これにより、掃除機本体に電動送風機を組み込む際に、サポート部材に保持される整流板のセット位置がずれても、整流板の開口部が電動送風機の吸気口を塞いでしまうことを防止することができ、吸込み気流の乱流発生による風切り音を抑制することができ、かつ狙い通りの吸込み性能も確保できるようになる。 In the fifth aspect of the invention, in particular, in the electric vacuum cleaner according to any one of the first to fourth aspects, the inner diameter of the opening of the rectifying plate is made larger than the inner diameter of the air inlet provided in the electric blower.
This prevents the opening of the rectifying plate from blocking the intake port of the electric blower even if the set position of the rectifying plate held by the support member is shifted when the electric blower is incorporated into the cleaner body. Therefore, it is possible to suppress wind noise caused by the turbulent flow of the suction airflow and to secure the intended suction performance.

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。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
本発明の第１の実施の形態における電気掃除機について図１，２，３，４を用いて説明する。図１は本発明の実施の形態１における電気掃除機の全体斜視図、図２は同電気掃除機の掃除機本体の中央縦断面図、図３、同電気掃除機の整流板の前方斜視図、図４は同電気掃除機の整流板の後方斜視図である。 (Embodiment 1)
The vacuum cleaner in the 1st Embodiment of this invention is demonstrated using FIG. 1 is an overall perspective view of the electric vacuum cleaner according to Embodiment 1 of the present invention, FIG. 2 is a central longitudinal sectional view of the main body of the vacuum cleaner, and FIG. 3 is a front perspective view of a rectifying plate of the electric vacuum cleaner. FIG. 4 is a rear perspective view of the current plate of the electric vacuum cleaner.

本発明の電気掃除機は、床ノズル１，延長管２，集塵用ホース３及び掃除機本体４により構成され、床ノズル１，延長管２，集塵用ホース３及び掃除機本体４はこの順で接続されている。
掃除機本体４内には集塵用フィルター５が、集塵用ホース３への接続口と連通するように設置されている。掃除機本体４の後部には、集塵用フィルター５と、フィルター枠６と、掃除機本体の仕切格子７とを介して電動送風機８が設置されている。 The vacuum cleaner of the present invention is composed of a floor nozzle 1, an extension pipe 2, a dust collecting hose 3 and a vacuum cleaner main body 4, and the floor nozzle 1, the extension pipe 2, the dust collecting hose 3 and the vacuum cleaner main body 4 are composed of this. Connected in order.
A dust collection filter 5 is installed in the cleaner body 4 so as to communicate with a connection port to the dust collection hose 3. At the rear part of the cleaner body 4, an electric blower 8 is installed via a dust collecting filter 5, a filter frame 6, and a partition grid 7 of the cleaner body.

電動送風機８は、電動機９と、電動機９の回転軸に固定され回転駆動されるインペラファン（図示せず）と、吸気口１１を有しインペラファンを覆うファンケース１０とにより構成され、ファンケース１０には前記吸気口１１を形成する吸気ガイド１２が固定され、電動機９には排気口２６が設けられている。防音ケース１６の下壁には防音ケース排気口１８が設けられており、後部壁には本体排気口１９が設けられている。   The electric blower 8 includes an electric motor 9, an impeller fan (not shown) that is fixed to the rotating shaft of the electric motor 9 and is driven to rotate, and a fan case 10 that has an intake port 11 and covers the impeller fan. An intake guide 12 that forms the intake port 11 is fixed to 10, and an exhaust port 26 is provided in the electric motor 9. A soundproof case exhaust port 18 is provided on the lower wall of the soundproof case 16, and a main body exhaust port 19 is provided on the rear wall.

電動送風機８は、ファンケース１０の前方外周部に設けられたゴムなどの軟質材からなるサポート部材１３と電動機９のハウジング部１４に設けられた防振ゴム１５を介して掃除機本体４及び防音ケース１６に弾性支持されている。   The electric blower 8 includes the vacuum cleaner main body 4 and the soundproofing via the support member 13 made of a soft material such as rubber provided on the front outer peripheral portion of the fan case 10 and the vibration isolation rubber 15 provided on the housing portion 14 of the electric motor 9. The case 16 is elastically supported.

前記サポート部材１３には、開口部２７を備えファンケース１０の吸気口１１に向かう傾斜部２８とサポート部材１３に挟持される保持部２９とを有する円環形状の整流板１７が支持されている。この整流板１７は、ファンケース１０に取着されたサポート部材１３に挟持された状態において、整流板１７と吸気ガイド１２との間に隙間３０を設けて配置され、かつ傾斜部２８と保持部２９との間の空間において消音室２２を形成するように構成されている。   The support member 13 supports an annular rectifying plate 17 having an opening 27 and an inclined portion 28 facing the air inlet 11 of the fan case 10 and a holding portion 29 sandwiched between the support members 13. . The rectifying plate 17 is disposed with a gap 30 between the rectifying plate 17 and the intake guide 12 in a state where the rectifying plate 17 is sandwiched between the support members 13 attached to the fan case 10, and the inclined portion 28 and the holding portion. The sound deadening chamber 22 is formed in the space between the two.

そして、図２に示すように、整流板１７の消音室２２と、サポート部材１３と、ファンケース１０と、吸気ガイド１２とによって囲まれる空間が、ヘルムホルツ共鳴器となる消音空間３１となるものである。   As shown in FIG. 2, a space surrounded by the sound deadening chamber 22 of the current plate 17, the support member 13, the fan case 10, and the air intake guide 12 becomes a sound deadening space 31 that becomes a Helmholtz resonator. is there.

以上のように構成された電気掃除機について、以下その動作、作用を説明する。
電源に接続され電動送風機８が駆動すると、床ノズル１から塵埃を含んだ空気が吸い込まれる。吸い込まれた空気は、延長管２，集塵用ホース３を介して掃除機本体４内の集塵用
フィルター５に送り込まれる。ここで塵埃と空気は分離され、塵埃は集塵用フィルター５内に留まり、空気はフィルター枠６を通り、掃除機本体の仕切格子７に設けられた通気口２０を通してサポート部材１３に挟持された整流板１７で整流されて、電動送風機８の吸気口１１に流入し電動機９を冷却して排気口２６から排気され、防音ケース排気口１８から、掃除機本体４の内壁と防音ケースの外壁によって形成される通路を通って本体排気口１９から機外に排気される。上記一連の空気の流れを矢印２３で示す。 About the vacuum cleaner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
When the electric blower 8 is connected to the power source and driven, air containing dust is sucked from the floor nozzle 1. The sucked air is sent to the dust collecting filter 5 in the cleaner body 4 through the extension pipe 2 and the dust collecting hose 3. Here, the dust and air are separated, the dust stays in the dust collecting filter 5, and the air passes through the filter frame 6 and is sandwiched by the support member 13 through the vent holes 20 provided in the partition grid 7 of the cleaner body. It is rectified by the rectifying plate 17, flows into the air intake 11 of the electric blower 8, cools the electric motor 9, and is exhausted from the exhaust 26. The air is exhausted from the main body exhaust port 19 through the formed passage. The above-described series of air flows is indicated by an arrow 23.

この時、電動送風機８の吸気口１１に流入する吸引気流には、吸込み時の風切り音を含んだ騒音成分が含まれており、この騒音を含んだ吸引気流が整流板１７から吸気口１１に流入するまでの間において、前記騒音が整流板１７と吸気ガイド１２との間の隙間３０から消音空間３１に入り込み、消音空間３１に入り込んだ音は、消音空間３１内で共鳴することにより、ヘルムホルツ共鳴器と同一の消音効果が得られ、吸込み時の風切り音を含んだ騒音を減衰させるものである。そして、騒音を減衰させた吸引気流は吸気口１１へと流入し電動機９を冷却して排気口２６から排気される。   At this time, the suction airflow flowing into the intake port 11 of the electric blower 8 includes a noise component including wind noise at the time of suction, and the suction airflow including this noise flows from the rectifying plate 17 to the intake port 11. Until the inflow, the noise enters the silencing space 31 through the gap 30 between the rectifying plate 17 and the intake guide 12, and the sound entering the silencing space 31 resonates in the silencing space 31. The same silencing effect as that of the resonator is obtained, and the noise including wind noise during suction is attenuated. Then, the suction airflow with attenuated noise flows into the intake port 11, cools the electric motor 9, and is exhausted from the exhaust port 26.

また、整流板１７は、ファンケース１０に取着されたサポート部材１３に挟持された状態において、整流板１７と吸気ガイド１２との間に隙間３０を設けて配置されているため、従来の電気掃除機のように整流板１７が電動送風機８の吸気ガイド１２に当接させて隙間を開けていない構成とは相違し、電動送風機８の回転に伴う振動が整流板１７に伝わって共振する騒音や、空気を吸込む際の風切り音等が電動送風機８に伝わって発生する騒音等が、掃除機本体４の外部へ伝搬するのを減少させることができる。   Further, since the rectifying plate 17 is disposed with a gap 30 between the rectifying plate 17 and the intake guide 12 in a state of being sandwiched between the support members 13 attached to the fan case 10, the conventional electric Unlike the configuration in which the rectifying plate 17 is not in contact with the intake guide 12 of the electric blower 8 as in the case of a vacuum cleaner, no noise is generated due to the vibration accompanying the rotation of the electric blower 8 being transmitted to the rectifying plate 17. In addition, it is possible to reduce the propagation of noise generated when wind noise or the like when air is sucked is transmitted to the electric blower 8 to the outside of the cleaner body 4.

（実施の形態２）
本発明の実施の形態２における電気掃除機について説明する。
図５は本発明の実施の形態２を示す整流板１７を後方から見た斜視図を示すものである。以下、実施の形態１と同一部分については同一符号を付して説明を省略する。 (Embodiment 2)
The electric vacuum cleaner in Embodiment 2 of this invention is demonstrated.
FIG. 5 shows a perspective view of the current plate 17 showing the second embodiment of the present invention as seen from the rear. Hereinafter, the same parts as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

図５に示すように、整流板１７における傾斜部２８と保持部２９との間の空間にて形成した消音室２２の内周に防音材２４を配設したものである。この構成により、消音空間３１に入り込んだ音は、消音空間３１内で共鳴し、ヘルムホルツ共鳴器と同一の消音効果が得られると共に、さらに消音室２２の内周に配設した防音材２４により吸音されるため、騒音や吸込み時の風切り音を減衰させる効果が増すものである。   As shown in FIG. 5, a soundproof material 24 is disposed on the inner periphery of a muffler chamber 22 formed in a space between the inclined portion 28 and the holding portion 29 in the rectifying plate 17. With this configuration, the sound that enters the silencing space 31 resonates in the silencing space 31, and the same silencing effect as that of the Helmholtz resonator is obtained. Further, the sound absorbing material 24 disposed on the inner periphery of the silencing chamber 22 absorbs the sound. Therefore, the effect of attenuating noise and wind noise during suction is increased.

また、消音室２２の内周に配設した防音材２４を確実に保持するために、整流板１７の傾斜部２８の内壁面には保持リブ３２を間隔を空けて複数設けている。保持リブ３２間に間隔を空けているのは、保持リブ３２が消音室２２内での防音材２４の露出面積を塞いでしまうことを防ぎ、防音材２４が消音空間３１内において、広い面積で露出させるためである。また、この保持リブ３２も図２に示すように、保持リブ３２の端部はどこにも接触しておらず、電動送風機８の回転に伴う振動が整流板１７に伝わって共振する騒音を発生させないように配設されている。   A plurality of holding ribs 32 are provided on the inner wall surface of the inclined portion 28 of the rectifying plate 17 at an interval in order to securely hold the soundproofing material 24 disposed on the inner periphery of the sound deadening chamber 22. The spacing between the holding ribs 32 prevents the holding ribs 32 from blocking the exposed area of the soundproof material 24 in the sound deadening chamber 22, and the soundproof material 24 has a large area in the sound deadening space 31. It is for exposing. Further, as shown in FIG. 2, the end of the holding rib 32 is not in contact with any part of the holding rib 32, and the vibration accompanying the rotation of the electric blower 8 is transmitted to the rectifying plate 17 and does not generate resonating noise. It is arranged like this.

（実施の形態３）
本発明の実施の形態３における電気掃除機について説明する。
図６は本発明の実施の形態３を示す整流板１７を後方から見た斜視図を示すものである。以下、実施の形態１と同一部分については同一符号を付して説明を省略する。 (Embodiment 3)
The electric vacuum cleaner in Embodiment 3 of this invention is demonstrated.
FIG. 6 shows a perspective view of the current plate 17 showing the third embodiment of the present invention as seen from the rear. Hereinafter, the same parts as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

図６に示すように、整流板１７における傾斜部２８と保持部２９との間の空間にて形成した消音室２２をリブ２５により仕切ることで、複数の消音室３３を形成したものである。
これにより、複数の消音室３３の各々の空間体積が小さくできるため、高い周波数の音を
効果的に低減させることができる。この効果は、空間体積の小さい消音室の方が、高い周波数の音を低減させるのに効果的であるヘルムホルツ共鳴器による消音効果特性から実証されていることに準じるものである。 As shown in FIG. 6, a plurality of sound deadening chambers 33 are formed by partitioning the sound deadening chamber 22 formed in the space between the inclined portion 28 and the holding portion 29 in the current plate 17 by ribs 25.
Thereby, since the space volume of each of the plurality of muffler chambers 33 can be reduced, high-frequency sound can be effectively reduced. This effect is based on the fact that the muffler chamber with a smaller spatial volume is proved by the muffler effect characteristic of the Helmholtz resonator, which is more effective in reducing high-frequency sound.

（実施の形態４）
本発明の実施の形態４における電気掃除機について説明する。
図７は本発明の実施の形態４を示す整流板１７を後方から見た斜視図を示すものである。以下、実施の形態１および３と同一部分については同一符号を付して説明を省略する。 (Embodiment 4)
A vacuum cleaner according to Embodiment 4 of the present invention will be described.
FIG. 7 shows a perspective view of the rectifying plate 17 showing the fourth embodiment of the present invention as seen from the rear. Hereinafter, the same parts as those in the first and third embodiments are denoted by the same reference numerals and the description thereof is omitted.

図７に示すように、整流板１７における傾斜部２８と保持部２９との間の空間にて形成した消音室２２をリブ２５により仕切ることで、空間体積が異なる複数の消音室３４を形成したものである。
これにより、複数の消音室３４の各々の空間体積を異なる大きさにできるため、周波数の異なる音の消音効果が得られ、異なる周波数の騒音や吸込み時の風切り音を減衰させることが可能となる。 As shown in FIG. 7, a plurality of sound deadening chambers 34 having different space volumes are formed by partitioning the sound deadening chamber 22 formed in the space between the inclined portion 28 and the holding portion 29 in the current plate 17 by the rib 25. Is.
Thereby, since each space volume of the plurality of muffler chambers 34 can be made to have different sizes, it is possible to obtain a sound muffling effect of sounds having different frequencies, and it is possible to attenuate noise having different frequencies and wind noise during suction. .

（実施の形態５）
本発明の実施の形態５における電気掃除機について説明する。
図８は本発明の実施の形態５を示す整流板１７をサポート部材１３を介して電動送風機８に保持した状態における前方斜視図を示すものである。
以下、実施の形態１と同一部分については同一符号を付して説明を省略する。 (Embodiment 5)
A vacuum cleaner according to Embodiment 5 of the present invention will be described.
FIG. 8 shows a front perspective view in a state in which the rectifying plate 17 showing the fifth embodiment of the present invention is held by the electric blower 8 via the support member 13.
Hereinafter, the same parts as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

図８に示すように、整流板１７の開口部２７の内径ａの方が電動送風機８の吸気口１１の内径ｂよりも大きくしたものである。これにより、掃除機本体に電動送風機８を組み込む際に、サポート部材１３に保持される整流板１７のセット位置がずれても、整流板１７の開口部２７が電動送風機８の吸気口１１を塞いでしまうことを防止することができ、吸込み気流の乱流発生による風切り音を抑制することができ、かつ狙い通りの吸込み性能も確保できるようにしたものである。   As shown in FIG. 8, the inner diameter “a” of the opening 27 of the rectifying plate 17 is made larger than the inner diameter “b” of the air inlet 11 of the electric blower 8. Thus, when the electric blower 8 is incorporated into the cleaner body, even if the set position of the rectifying plate 17 held by the support member 13 is shifted, the opening 27 of the rectifying plate 17 blocks the intake port 11 of the electric blower 8. It is possible to prevent the wind noise caused by the turbulent flow of the suction airflow and to secure the intended suction performance.

以上のように本願発明の実施の形態は、従来の掃除機の電動送風機の吸気口部分では、実現できなかった騒音低下を、従来からの構成部品である整流板１７の裏側に消音室２２を設け、かつ整流板１７と電動送風機８の吸気ガイド１２との間に隙間３０を設けることで、ヘルムホルツ共鳴器の消音効果が得られる消音空間３１を備えることにより、消音空間３１に入り込んだ空気は、消音空間３１で共鳴し、ヘルムホルツ共鳴器と同一の消音効果が得られ、騒音や吸込み時の風切り音を減衰させることを可能としたものである。   As described above, according to the embodiment of the present invention, the noise reduction chamber 22 is provided on the back side of the current plate 17 that is a conventional component because noise reduction that cannot be realized at the intake port portion of the electric blower of the conventional vacuum cleaner is realized. The air that has entered the silencing space 31 is provided by providing the silencing space 31 that provides the silencing effect of the Helmholtz resonator by providing the clearance 30 between the rectifying plate 17 and the intake guide 12 of the electric blower 8. Resonating in the silencing space 31, the same silencing effect as the Helmholtz resonator is obtained, and it is possible to attenuate noise and wind noise during suction.

また、整流板１７は、ファンケース１０に取着されたサポート部材１３に挟持された状態において、整流板１７と吸気ガイド１２との間に隙間３０を設けて配置されているため、電動送風機８の回転に伴う振動が整流板１７に伝わって共振する騒音や、空気を吸込む際の風切り音等が電動送風機８に伝わって発生する騒音等が、掃除機本体４の外部へ伝搬することを減少させることができるものである。   Further, since the rectifying plate 17 is disposed with a gap 30 between the rectifying plate 17 and the intake guide 12 in a state of being sandwiched between the support members 13 attached to the fan case 10, the electric blower 8 Reduces the propagation of vibration due to the rotation of the air flow to the rectifying plate 17 and the noise generated by the wind noise generated when air is sucked into the electric blower 8 to the outside of the cleaner body 4. It can be made to.

なお、集塵部について、本実施の形態では、紙袋等の集塵フィルターを用いたが、サイクロン式の集塵装置を用いたものにおいても運転時の騒音を低減できるという効果が同様に得られるものである。   In the present embodiment, a dust collection filter such as a paper bag is used for the dust collection unit. However, an effect that noise during operation can be reduced can be obtained even in a case using a cyclone type dust collection device. Is.

以上のように、本発明の電気掃除機は、運転時の騒音の低減を実現することができるため、高い吸い込み力を維持しながら騒音を低減した電気掃除機の用途に適用できる。   As described above, since the vacuum cleaner of the present invention can realize a reduction in noise during operation, it can be applied to the use of a vacuum cleaner that reduces noise while maintaining a high suction force.

８ 電動送風機
９ 電動機
１０ ファンケース
１１ 吸気口
１２ 吸気ガイド
１３ サポート部材
１７ 整流板
２４ 防音材
２５ リブ
２７ 開口部
２８ 傾斜部
２９ 保持部
３０ 隙間
２２，３３，３４ 消音室 DESCRIPTION OF SYMBOLS 8 Electric blower 9 Electric motor 10 Fan case 11 Intake port 12 Intake guide 13 Support member 17 Current plate 24 Sound insulation material 25 Rib 27 Opening part 28 Inclination part 29 Holding part 30 Crevice 22,33,34 Silence room

Claims (5)

電動機と、前記電動機の回転軸に固定され回転駆動されるインペラファンと、吸気口を有し前記インペラファンを覆うファンケースと、前記ファンケースに固定され前記吸気口を形成する吸気ガイドと、からなる電動送風機と、
前記電動送風機の前方外周部の一部を覆うサポート部材と、
開口部を備え前記ファンケースの吸気口に向かう傾斜部と前記サポート部材に挟持される保持部とを有する環形状の整流板と、を備え、
前記整流板は、前記サポート部材に挟持された状態において、
前記整流板と前記吸気ガイドとの間に隙間を設けて配置され、かつ前記傾斜部と前記保持部との間の空間において消音室を形成するように構成した電気掃除機。 An electric motor, an impeller fan fixed to the rotating shaft of the electric motor and driven to rotate, a fan case having an air inlet and covering the impeller fan, and an air intake guide fixed to the fan case and forming the air inlet An electric blower,
A support member that covers a portion of the front outer periphery of the electric blower;
An annular rectifier plate having an opening and an inclined portion facing the air inlet of the fan case and a holding portion sandwiched between the support members;
In the state where the current plate is sandwiched between the support members,
A vacuum cleaner that is arranged with a gap between the current plate and the intake guide, and that is configured to form a muffler chamber in a space between the inclined portion and the holding portion. 前記消音室の内周に防音材を配設した請求項１に記載の電気掃除機。 The electric vacuum cleaner according to claim 1, wherein a soundproofing material is disposed on an inner periphery of the sound deadening chamber. 前記消音室をリブにより仕切ることで、複数の消音室を形成した請求項１または２に記載の電気掃除機。 The vacuum cleaner according to claim 1 or 2, wherein a plurality of silencer chambers are formed by partitioning the silencer chamber with ribs. 前記複数の消音室の空間体積が異なるように前記リブを配列させた請求項３に記載の電気掃除機。 The electric vacuum cleaner according to claim 3, wherein the ribs are arranged so that the space volumes of the plurality of muffler chambers are different. 前記整流板の開口部の内径の方が前記電動送風機に備えた前記吸気口の内径よりも大きくした請求項１〜４のいずれか１項に記載の電気掃除機。 The vacuum cleaner according to any one of claims 1 to 4, wherein an inner diameter of the opening of the rectifying plate is larger than an inner diameter of the intake port provided in the electric blower.
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US10765280B2 (en) 2014-12-26 2020-09-08 Samsung Electronics Co., Ltd. Vacuum cleaner and control method for the same

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CN104159488A (en) 2014-11-19
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