JPH0226598A - Automatic washer - Google Patents
Automatic washerInfo
- Publication number
- JPH0226598A JPH0226598A JP63175052A JP17505288A JPH0226598A JP H0226598 A JPH0226598 A JP H0226598A JP 63175052 A JP63175052 A JP 63175052A JP 17505288 A JP17505288 A JP 17505288A JP H0226598 A JPH0226598 A JP H0226598A
- Authority
- JP
- Japan
- Prior art keywords
- outer frame
- tank
- noise
- washing machine
- corner part
- 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.)
- Pending
Links
- 239000006096 absorbing agent Substances 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims description 20
- 230000018044 dehydration Effects 0.000 description 8
- 238000006297 dehydration reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011295 pitch Substances 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Landscapes
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、家庭用の自動洗濯機に係り、特に外枠内部で
発生した騒音を抑制するのに好適な洗濯機用吸音器に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a domestic automatic washing machine, and particularly to a sound absorber for a washing machine suitable for suppressing noise generated inside an outer frame.
従来のこの種の自動洗濯機の構造を第４図により説明す
る。水を受けるための外槽３は、カバー２を有する外枠
１に防振機構４を介し弾性支持されている。外槽３の底
部には、変速機５およびモータ６がベース７を介し固定
されている。モータ６の駆動力はベルト８を介し変速機
５に伝達される。変速機５は２軸構造になっており、外
側の軸には脱水槽９が、内側の軸には撹拌翼１０が固定
されている。The structure of a conventional automatic washing machine of this type will be explained with reference to FIG. An outer tank 3 for receiving water is elastically supported by an outer frame 1 having a cover 2 via a vibration isolation mechanism 4. A transmission 5 and a motor 6 are fixed to the bottom of the outer tank 3 via a base 7. The driving force of the motor 6 is transmitted to the transmission 5 via the belt 8. The transmission 5 has a two-shaft structure, with a dehydration tank 9 fixed to the outer shaft and a stirring blade 10 fixed to the inner shaft.
以上のような構成で、洗濯、すすぎ、脱水を自動的に行
っているのが、従来の一般的な自動洗濯機である。（な
お、この種の装置として関連するものには１例えば特開
昭６２−１０９６００ 、特開昭６２−１７０２９５
、特開昭６２−１７０２９６等が挙げられる。）〔発明
が解決しようとする課題〕
上記従来技術は、特に脱水時にモータの電磁振動や衣類
の片寄りのため生じるアンバランス振動などが原因で外
槽やベースから発生し、洗濯機内部空間で空洞共鳴する
騒音について配慮がされておらず、それが外枠より外部
に伝わり洗濯機の騒音を大きくしていた。A typical conventional automatic washing machine has the above configuration and automatically performs washing, rinsing, and dehydration. (Related devices of this type include 1, for example, JP-A No. 62-109600, JP-A No. 62-170295)
, JP-A No. 62-170296, etc. ) [Problems to be Solved by the Invention] In the above conventional technology, electromagnetic vibrations of the motor and unbalanced vibrations caused by unbalanced clothing during spin-drying are generated from the outer tub and base, and the vibrations occur in the internal space of the washing machine. No consideration was given to the noise resonating in the cavity, and the noise was transmitted to the outside through the outer frame, making the washing machine noisy.
本発明の目的は、上記従来の問題点を解消し、騒音の小
さな洗濯機を提供することにある。An object of the present invention is to solve the above-mentioned conventional problems and provide a washing machine with low noise.
（１１１１題を解決するための手段〕
上記目的は、外槽等を弾性支持した外枠の内側コーナ部
の空間を有効に利用し、コーナ部に共鳴型の吸音器を設
けることにより、達成される。(Means for Solving Problem 1111) The above object can be achieved by effectively utilizing the space in the inner corner of the outer frame that elastically supports the outer tank, etc., and by providing a resonant sound absorber in the corner. Ru.
本構成によれば、モータの電磁振動や衣類のアンバラン
スにより生じる振動などにより外槽やベース等が振動し
て発生する騒音のなかでも特に大きく、外枠と外槽間の
空間で空洞共鳴により拡大される騒音を、外枠内側コー
ナ部に設けた共鳴型の吸音器が代りに共鳴し吸収してく
れるので、外枠内部空間の音圧が下がり外枠外部に放射
される量も減少し、脱水行程中でも静かな洗濯機を提供
できる。According to this configuration, the noise generated by the vibration of the outer tank, base, etc. due to the electromagnetic vibration of the motor and the vibration caused by unbalance of clothing is particularly loud, and is caused by cavity resonance in the space between the outer frame and the outer tank. The resonant sound absorber installed at the inner corner of the outer frame resonates and absorbs the expanding noise, reducing the sound pressure in the inner space of the outer frame and reducing the amount radiated to the outside of the outer frame. , it is possible to provide a washing machine that is quiet even during the spin process.
〔実施例〕
以下１本発明の一実施例を第１図〜第３図により説明す
る。なお、第４図と同様の作用を成すものには同一符号
を付けてその説明を省く。[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Components having the same functions as those in FIG. 4 are given the same reference numerals and their explanations will be omitted.
第１図と第２図は本発明の自動洗濯機を示し、次の点が
第４図と異なる。すなわち、外枠１内側の各コーナ部に
、ヘルムホルツ型共鳴器１１が縦に１個または複数個設
置されている点である。1 and 2 show an automatic washing machine of the present invention, which differs from FIG. 4 in the following points. That is, one or more Helmholtz type resonators 11 are installed vertically at each corner inside the outer frame 1.
通常自動洗濯機では、洗濯したい衣類と洗剤を脱水槽９
に入れ通電すると一定量の水が給水され、給水が終わる
と自動的に撹拌翼１０が回転を始め、衣類を撹拌しなが
ら洗濯する。洗濯が終わると。Normally, in automatic washing machines, the clothes you want to wash and the detergent are placed in the dehydration tank 9.
When the machine is inserted into the machine and energized, a certain amount of water is supplied, and when the supply of water is finished, the stirring blades 10 automatically start rotating to wash the clothes while stirring them. When the laundry is finished.
排水、すすぎを行い、更に排水終了後、脱水槽９が回転
し衣類は遠心脱水される。この脱水行程中に衣類の片寄
りによりアンバランスが生じ、脱水槽９や外槽３が激し
く振動し騒音が大きくなる。Draining and rinsing are performed, and after the draining is completed, the dehydration tank 9 rotates and the clothes are centrifugally dehydrated. During this dewatering process, an imbalance occurs due to the clothes being lopsided, causing the dehydration tank 9 and outer tank 3 to vibrate violently, resulting in increased noise.
ヘルムホルツの共鳴器１１がない従来の洗濯機では、脱
水行程中の騒音として特に３００ Ｈｚ成分が大きく、
低騒音の洗濯機を作るうえで大きな障害となっている。In conventional washing machines without the Helmholtz resonator 11, the 300 Hz component is particularly loud as noise during the dehydration process.
This is a major obstacle in creating low-noise washing machines.
この種の騒音を検討した結果。This is the result of considering this type of noise.
３００ Ｈｚ付近の騒音は自動洗濯機固有のものであり
、外枠１の寸法からきていることがわかった。It was found that the noise around 300 Hz is unique to automatic washing machines and comes from the dimensions of the outer frame 1.
すなわち、外枠１のたてとよこの長さが約５５ｃｍであ
り、ｆ＝ｃ／２Ｑ（ｃ：音速、ａ：長さ）で決まる空洞
共鳴周波数が約３００ Ｈｚとなる。そのため３００Ｈ
ｚ付近で半波長の定在波１２が生じ、モータ６の電磁振
動や脱水槽９のアンバランス振動により外槽３などが振
動し発生する３００Ｈｚ付近の騒音を大きくしていたと
考えられる。That is, the length and width of the outer frame 1 are about 55 cm, and the cavity resonance frequency determined by f=c/2Q (c: speed of sound, a: length) is about 300 Hz. Therefore 300H
It is thought that a half-wavelength standing wave 12 is generated near z, and the electromagnetic vibration of the motor 6 and the unbalanced vibration of the dehydration tank 9 cause the outer tank 3 and the like to vibrate, increasing the noise around 300 Hz.
本実施例では、外枠１内側コ一ナ部で定在波の音圧が最
大になることに着目するとともに、コーナ部の空間を最
大限に利用したいために、ヘルムホルツの共鳴＠１１を
第１図のように、各コーナ部に縦に並べる構造とした０
本実施例のへルムホルツの共鳴器１１は三角柱状の形を
しており各々が３００Ｈｚ付近で共鳴するように穴の大
きさと空洞の体積および板厚を設計している。各共鳴器
は一つづつ作り重ねてもよいし、一体のものにしきりを
入れてもよい０以上のような構造にすることにより、コ
ーナ部での入射音響インピーダンスが３００Ｈｚ付近で
小さくなり、定在波が抑制される。なお、共鳴器１１は
各コーナに１つでもよいが、小さなものを複数個重ぬる
方がすなわち、穴の数の多い方が効果は大きく、また、
吸音性の高い材料で構成した方が吸収できる周波数範囲
も広がり効果も大きい。In this example, we focused on the fact that the sound pressure of the standing wave is maximum at the inner corner of the outer frame 1, and in order to maximize the use of the corner space, the Helmholtz resonance @11 was As shown in Figure 1, 0 is arranged vertically at each corner.
The Helmholtz resonators 11 of this embodiment have a triangular prism shape, and the hole size, cavity volume, and plate thickness are designed so that each resonator resonates around 300 Hz. Each resonator may be built one on top of the other, or may be integrated into one piece with a cutout. By creating a structure with a diameter of 0 or more, the incident acoustic impedance at the corner becomes small around 300 Hz, and it becomes constant. Wave presence is suppressed. Note that one resonator 11 may be provided at each corner, but the effect is greater if multiple small resonators are stacked, that is, if there are more holes,
If it is made of a material with high sound absorption properties, the frequency range that can be absorbed will be expanded and the effect will be greater.
第７図に、脱水時騒音のスペクトル分析例と、本実施例
の効果を重ねて示す０本実施例の吸音器により３００Ｈ
ｚ付近の音圧が数ｄＢ低減しているのがわかる。Figure 7 shows an example of spectrum analysis of noise during dehydration and the effects of this example.
It can be seen that the sound pressure near z has been reduced by several dB.
他の実施例を第５図により説明する０本実施例では、１
つの共鳴器１１が２つに分かれており各各の共鳴周波数
を各方向の空洞共鳴周波数に合わせである。そのため、
縦横両方の定在波の吸収に効果を有するものである。共
鳴器１１が５角柱状になっているのは外槽との衝突を回
避するためであり、その危険がなければ四角柱状でもよ
く、また多角柱状でなくてもよい。Another embodiment will be explained with reference to FIG. 5. In this embodiment, 1
The resonator 11 is divided into two parts, and the resonant frequency of each is matched to the cavity resonant frequency in each direction. Therefore,
This is effective in absorbing both vertical and horizontal standing waves. The reason why the resonator 11 is shaped like a pentagonal column is to avoid collision with the outer tank, and if there is no danger of this, it may be shaped like a square column or may not be shaped like a polygonal column.
その他の実施例を第６図により説明する。本実施例の吸
音器は穴あき板１２と支持用の弾性体１３とからなり、
穴あき板１２は外枠１の内側コーナ部にそったＬ字型を
している。また穴あき板１２には等ピッチで穴が明けら
れており、穴の径。Other embodiments will be explained with reference to FIG. The sound absorber of this embodiment consists of a perforated plate 12 and an elastic body 13 for support.
The perforated plate 12 is L-shaped along the inner corner of the outer frame 1. The perforated plate 12 also has holes formed at equal pitches, and the diameter of the holes.
板厚、ピッチの長さおよび外枠１と穴あき板１２とのす
きまは縦と横方向は独立で外枠１の縦と横方向の空洞共
鳴周波数各々に合わせて設計しである６以上のような構
造にすることにより、穴あき板１２の穴と穴あき板１２
と外枠１との間の空気層が共鳴し、外枠１内の空洞共鳴
周波数付近の騒音を吸収する。穴あき板に吸音材料をは
り合わせれば吸収できる周波数範囲も広がり効果も大き
い。The plate thickness, pitch length, and clearance between the outer frame 1 and the perforated plate 12 are independent in the vertical and horizontal directions, and are designed to match the cavity resonance frequencies of the outer frame 1 in the vertical and horizontal directions. By creating a structure like this, the holes in the perforated plate 12 and the perforated plate 12
The air layer between the outer frame 1 and the outer frame 1 resonates, and absorbs noise around the resonance frequency of the cavity inside the outer frame 1. If sound-absorbing material is attached to a perforated board, the frequency range that can be absorbed will be expanded and the effect will be great.
本発明によれば、外枠内側コーナ部の空間を利用して共
鳴型の吸音器を設けたので、有効スペースをへらすこと
なく洗濯機特有の３００ Ｈｚ付近の空洞共鳴を大幅に
低減でき、洗濯機の低騒音化に効果がある。According to the present invention, since a resonant sound absorber is installed using the space in the inner corner of the outer frame, the cavity resonance around 300 Hz, which is characteristic of washing machines, can be significantly reduced without reducing the effective space. Effective in reducing machine noise.
第１図は１本発明の一実施例の縦断面図、第２図は第１
図の水平断面図、第３図は外枠内側での定在波の発生状
況、第４図は従来の洗濯機の縦断面図、第５図、第６図
は他の実施例の部分断面図、第７図は１本発明の第１の
実施例の効果説明図である。
１・・・外枠。
３・・・外槽、
４・・・防振装置。
６・・・モータ。
穿
図
Ｗｊ図
／Ａ 八−り惧
／Ｊ 縛１１４俸Fig. 1 is a vertical sectional view of one embodiment of the present invention, and Fig. 2 is a longitudinal sectional view of one embodiment of the present invention.
3 is a horizontal cross-sectional view of the figure, FIG. 3 is a situation in which standing waves occur inside the outer frame, FIG. 4 is a vertical cross-sectional view of a conventional washing machine, and FIGS. 5 and 6 are partial cross-sections of other embodiments. FIG. 7 is an explanatory diagram of the effect of the first embodiment of the present invention. 1... Outer frame. 3... Outer tank, 4... Vibration isolator. 6...Motor. Perforated drawing Wj drawing/A 8-ri eng/J binding 114 yen
Claims (1)
槽を弾性支持して収容する外枠とよりなる自動洗濯機に
おいて、該外枠の内側コーナ部に共鳴型吸音器を設けた
ことを特徴とする自動洗濯機。 ２、特許請求の範囲第１項において、前記吸音器は各々
が入り口と空間をもつヘルムホルツ型共鳴器を内側コー
ナ部の上下方向に設置されていることを特徴とする自動
洗濯機。[Scope of Claims] 1. In an automatic washing machine comprising an outer tank rotatably housing a washing and dehydrating tank, and an outer frame housing the outer tank with elastic support, an inner corner of the outer frame An automatic washing machine characterized by being equipped with a resonant sound absorber. 2. The automatic washing machine according to claim 1, wherein the sound absorber includes Helmholtz type resonators each having an entrance and a space installed in the vertical direction of the inner corner portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63175052A JPH0226598A (en) | 1988-07-15 | 1988-07-15 | Automatic washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63175052A JPH0226598A (en) | 1988-07-15 | 1988-07-15 | Automatic washer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226598A true JPH0226598A (en) | 1990-01-29 |
Family
ID=15989392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63175052A Pending JPH0226598A (en) | 1988-07-15 | 1988-07-15 | Automatic washer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226598A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030056630A (en) * | 2001-12-28 | 2003-07-04 | 삼성전자주식회사 | Washing machine |
| KR100720571B1 (en) * | 2000-12-29 | 2007-05-22 | 엘지전자 주식회사 | Washing machine for decreasing of noise |
| GB2501992A (en) * | 2012-05-10 | 2013-11-13 | Lg Electronics Inc | Appliance with noise reduction device |
| CN105937147A (en) * | 2016-06-29 | 2016-09-14 | 无锡小天鹅股份有限公司 | Box for washing machine and washing machine with box |
| WO2019182244A1 (en) * | 2018-03-23 | 2019-09-26 | 엘지전자 주식회사 | Washing machine |
| CN110894669A (en) * | 2019-11-21 | 2020-03-20 | 珠海格力电器股份有限公司 | Silencing structure of washing machine drying air duct and washing machine |
| WO2020114641A1 (en) * | 2018-12-06 | 2020-06-11 | BSH Hausgeräte GmbH | Domestic appliance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62109600A (en) * | 1985-11-07 | 1987-05-20 | 松下電器産業株式会社 | Automatic washing machine |
| JPS62170296A (en) * | 1986-01-24 | 1987-07-27 | 松下電器産業株式会社 | Automatic washing machine |
| JPS62170295A (en) * | 1986-01-24 | 1987-07-27 | 松下電器産業株式会社 | Automatic washing machine |
-
1988
- 1988-07-15 JP JP63175052A patent/JPH0226598A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62109600A (en) * | 1985-11-07 | 1987-05-20 | 松下電器産業株式会社 | Automatic washing machine |
| JPS62170296A (en) * | 1986-01-24 | 1987-07-27 | 松下電器産業株式会社 | Automatic washing machine |
| JPS62170295A (en) * | 1986-01-24 | 1987-07-27 | 松下電器産業株式会社 | Automatic washing machine |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100720571B1 (en) * | 2000-12-29 | 2007-05-22 | 엘지전자 주식회사 | Washing machine for decreasing of noise |
| KR20030056630A (en) * | 2001-12-28 | 2003-07-04 | 삼성전자주식회사 | Washing machine |
| GB2501992A (en) * | 2012-05-10 | 2013-11-13 | Lg Electronics Inc | Appliance with noise reduction device |
| GB2501992B (en) * | 2012-05-10 | 2014-07-02 | Lg Electronics Inc | Appliance having noise reduction device |
| US9299332B2 (en) | 2012-05-10 | 2016-03-29 | Lg Electronics Inc. | Appliance having noise reduction device |
| CN105937147A (en) * | 2016-06-29 | 2016-09-14 | 无锡小天鹅股份有限公司 | Box for washing machine and washing machine with box |
| WO2019182244A1 (en) * | 2018-03-23 | 2019-09-26 | 엘지전자 주식회사 | Washing machine |
| KR20190111692A (en) * | 2018-03-23 | 2019-10-02 | 엘지전자 주식회사 | Washing machine |
| WO2020114641A1 (en) * | 2018-12-06 | 2020-06-11 | BSH Hausgeräte GmbH | Domestic appliance |
| CN110894669A (en) * | 2019-11-21 | 2020-03-20 | 珠海格力电器股份有限公司 | Silencing structure of washing machine drying air duct and washing machine |
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