JP3659191B2

JP3659191B2 - Centrifugal dust collector and electric vacuum cleaner using the same

Info

Publication number: JP3659191B2
Application number: JP2001137031A
Authority: JP
Inventors: 博史西村
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2001-05-08
Filing date: 2001-05-08
Publication date: 2005-06-15
Anticipated expiration: 2021-05-08
Also published as: JP2002326041A

Description

【０００１】
【発明の属する技術分野】
本発明は、サイクロン作用による遠心力集塵装置の改良によるもので、塵埃の圧縮を図って実質の集塵容量を増大させると共に、塵埃の捕集効率の向上を図ったサイクロン作用による遠心力集塵装置を提供する。
【０００２】
【従来の技術】
従来のサイクロン作用による遠心力集塵装置を、図１０〜図１２を用いて説明する。
【０００３】
図１０は最も一般的なサイクロン作用による遠心力集塵装置で、円錐形の容器本体１０１の下方に集塵室１０２を設け、上方には略接線方向から含塵空気を導入する吸気パイプ１０３を、中央上方には排気パイプ１０４を設けている。
【０００４】
吸気パイプ１０３から容器本体１０１に導入された含塵空気は容器本体１０１の内面を旋回しながら塵埃が分離されて集塵室１０２に捕獲され空気が排気パイプ１０４から排出される。
【０００５】
図１１は、遠心力集塵装置が電気掃除機に使用されている例で、アップライト型電気掃除機本体２０１の下方に吸込具２０２が設けられている。アップライト型電気掃除機本体２０１の内部には円筒形の第一遠心力集塵部２０３が設けられている。前記第一遠心力集塵部２０３上方には略接線方向から含塵空気を導入する第一吸気口２０４が設けられており、第一通路２０５によって前記吸込具２０２と連通している。前記第一遠心力集塵部２０３内部には円錐形の第二遠心力集塵部２０６が設けられており、下方に細塵室２０７を形成している。前記第二遠心力集塵部２０６上方には略接線方向から含塵空気を導入する第二吸気口２０８が設けられており、第二通路２０９によって前記第一遠心力集塵部２０３と連通している。前記第二遠心力集塵部２０６の中央上方には排気パイプ２１０が設けられており、排気通路２１１を通じてファンモータ２１２に連通している。
【０００６】
吸込具２０２から吸引された含塵空気は第一通路２０５を通って第一吸気口２０４より第一遠心力集塵部２０３に導入され、内面を旋回しながら塵埃が分離されるサイクロン作用により、第一遠心力集塵部２０３下部に堆積される。第一遠心力集塵部２０３で分離できなかった細塵は空気と共に第二吸気口２０８より第二遠心力集塵部２０６に導入され内面を旋回しながら細塵が分離されて細塵室２０７に捕獲される。排気パイプ２１０より出た排気は排気通路２１１を通じてファンモータに吸引され機外に排出される。
【０００７】
図１２は図１１と類似の形態であるが、第一遠心力集塵部３０１上方には略接線方向から含塵空気を導入する第一吸気口３０２が設けられている。前記第一遠心力集塵部３０１内部には円錐形の第二遠心力集塵部３０３が設けられており、下方に細塵室３０４を形成している。前記第二遠心力集塵部３０３上方には略接線方向から含塵空気を導入する第二吸気口３０５が設けられている。前記第二遠心力集塵部３０３の外周には前記第一遠心力集塵部３０１の空気を前記第二吸気口３０５に流すことを可能にする穿孔３０８を備え、且つ前記第一遠心力集塵部３０１の内面から間隔を隔てて平行に配置されたシュラウド３０６を設けている。前記第二遠心力集塵部３０３の中央上方には排気パイプ３０７が設けられている。
【０００８】
第一吸気口３０２より第一遠心力集塵部３０１に導入された含塵空気は第一遠心力集塵部３０１内面を旋回しながら塵埃が分離されて第一遠心力集塵部３０１下部に堆積される。第一遠心力集塵部３０１で分離できなかった細塵は空気と共にシュラウド３０６を通って第二吸気口３０５より第二遠心力集塵部３０３に導入され内面を旋回するサイクロン作用により、細塵が分離されて細塵室３０４に捕獲され空気が排気パイプ３０７から排出される。
・
【発明が解決しようとする課題】
・このような上記従来のサイクロン作用による遠心力集塵装置にあっては、分離されるべき塵埃が排気パイプ（２１０、３０７）に向かう気流の影響を受けると舞い上げられてしまって排出され、捕集効率が悪くなるためサイクロン作用による遠心力集塵部の長さを長く取る必要があり、機器が大型化してしまうために背丈の低い部分や機器への組込みには不具合があった。また、塵埃は自重と旋回流だけで堆積するだけのため、綿ゴミなどの軽くてかさばる塵埃に対してゴミ圧縮が出来ないために容器の大きさの割には実質の集塵量が少ないと言う問題があった。
【０００９】
本発明は、以上のような従来の課題を解決するものであって、本体の大型化なしに小型コンパクトな機器に組込み可能で、ゴミ圧縮ができ実質の集塵量が多く捕集効率の良いサイクロン作用による遠心力集塵装置を提供することを目的とする。
【００１０】
【課題を解決するための手段】
上記目的を達成するために本発明は、外容器の内壁に沿って空気を下方に向かい旋回させるサイクロン作用により塵埃を集塵する第一遠心力集塵部と、前記第一遠心力集塵部に連通し下方に設けた第二導入口から上方に向かい空気を旋回させるサイクロン作用により塵埃を集塵する第二遠心力集塵部と、前記第二遠心力集塵部に連通し上方に設けた第三導入口から下方に向かい空気を旋回させるサイクロン作用により塵埃を集塵する第三遠心力集塵部から構成される遠心力集塵装置としたもので、遠心力集塵部を３箇所内方へと設けることで、サイクロン部の長さが短かくても実質の集塵量が多く、第一遠心力集塵部を通過した細塵も第二遠心力集塵部、第三遠心力集塵部で分離捕集でき捕集効率を良くすることができる。
【００１１】
【発明の実施の形態】
本発明の請求項１記載の発明は、外容器の内壁に沿って空気を下方に向かい旋回させるサイクロン作用により塵埃を集塵する第一遠心力集塵部と、前記第一遠心力集塵部に連通し下方に設けた第二導入口から上方に向かい空気を旋回させるサイクロン作用により塵埃を集塵する第二遠心力集塵部と、前記第二遠心力集塵部に連通し上方に設けた第三導入口から下方に向かい空気を旋回させるサイクロン作用により塵埃を集塵する第三遠心力集塵部から構成される遠心力集塵装置としたもので、遠心力集塵部を３箇所内方へと設けることで、サイクロン部の長さが短かくても実質の集塵量が多く、第一遠心力集塵部を通過した細塵も第二遠心力集塵部、第三遠心力集塵部で分離捕集でき捕集効率を良くすることができる。
【００１２】
本発明の請求項２記載の発明は、外容器の内壁側には、第一遠心力集塵部への空気の流入口である吸気口より導入した空気を回転に伴って下方に導くスパイラルのガイドを設けてなるもので、塵埃の旋回下降力をより有効に利用してゴミ圧縮性能が向上でき、塵埃の舞い上げを減少させ、第二遠心力集塵部に流入する塵埃量を減少させることで第二遠心力集塵部での分離の負担を軽減させ捕集効率を良くすることができる。
【００１３】
本発明の請求項３記載の発明は、第一遠心力集塵部の内側壁面に複数の穿孔を設け、第二遠心力集塵部下方に設けた複数の第二導入口と連通してなるもので、外容器内周から均一に第二導入口に空気の移動ができることで部分的な圧力差の発生や流速の偏りを防止でき、細塵の第二遠心力集塵部への侵入を少なくすることができる。また、第二導入口を複数にすることで全体風量を確保しながら第二導入口１個当たりの断面積を小さくすることで風速を早めることが出来、サイクロンによる分離性能を高めることができる。
【００１４】
本発明の請求項４記載の発明は、穿孔は外容器の旋回気流の後方側に向け傾斜させてなるもので、旋回中の塵埃が直接第二導入口に侵入する割合を減少させることで第二遠心力集塵部での分離の負担を軽減させ捕集効率を良くすることができる。
【００１５】
本発明の請求項５記載の発明は、穿孔は下方が径小で上方が径大にしてなるもので、外容器下部の粗塵溜まり部においても一般的に質量が大きい塵埃は下部に、質量が小さくて体積の大きい塵埃は上方に堆積されやすいので、塵埃が第二導入口に侵入し難くしながら空気の流通性を確保することができる。
【００１６】
本発明の請求項６記載の発明は、第二遠心力集塵部の上方には旋回気流の上流側に向け傾斜する傾斜壁を設け、前記傾斜壁に含塵空気を衝突させることにより塵埃を前記第二遠心力集塵部の下方に集塵するもので、第二遠心力集塵部で上方に上がった細塵をスムーズに連通口に移動させることができるとともに、第三遠心力集塵部に流入する塵埃量を減少させることで、第三遠心力集塵部での分離の負担を軽減させ捕集効率を良くすることができる。
【００１７】
本発明の請求項７記載の発明は、穿孔を有する壁は、一対の対向し平行なる構成をなすもので、外容器内周を旋回する平行の空気層と平行に構成された穿孔面の間に空気溜まり部が出来、下方に旋回してきた空気がこの空気溜まり部から上昇することにより下降風と上昇風がぶつかって流路圧損になることが軽減できる。また、成形金型製作時のピンの突合せも容易で安価で成形時のバリの発生の心配も軽減できる。
【００１８】
本発明の請求項８記載の発明は、遠心力集塵装置は、略円形の有底の外容器と、前記外容器に上方より挿入して外容器の上面を閉塞する遠心力集塵部ユニットで構成するとともに、前記遠心力集塵部ユニットは３部品で構成し組み合わせて一体化してなるもので、１つづつの部品製作が容易で入り組んだ複雑な構成が形成できる。
【００１９】
本発明の請求項９記載の発明は、遠心力集塵部ユニットはネジ締めなどにより一体化することにより分解可能にしてなるもので、分解可能にしてしているために、万一、遠心力集塵部ユニットに塵埃が詰まったときにも容易にメンテナンスができる。
【００２０】
本発明の請求項１０記載の発明は、第一遠心力集塵部下方の第一集塵部と、第二遠心力集塵部下方の第二集塵部と、第三遠心力集塵部下方の第三集塵部を、外容器と遠心力集塵部ユニットの組み合わせ状態で構成するとともに、遠心力集塵部ユニットを外容器から離脱しても、前記三つの集塵部の塵埃は外容器内に残留してなるもので、ゴミ捨て時に遠心力集塵部ユニットの離脱を行うだけで全ての塵埃が外容器内に収容され、ゴミ捨てが簡単に行える。
【００２１】
本発明の請求項１１記載の発明は、穿孔の総面積は吸気口面積の３倍以上であるもので、穿孔を通過するときの流速を遅くすることができるため、穿孔から第二遠心力集塵部に流出する塵埃量を減少させることで、第二遠心力集塵部での分離の負担を軽減させ捕集効率を良くすることができる。
【００２２】
本発明の請求項１２記載の発明は、第三遠心力集塵部下方の第三集塵部には旋回流による微細塵の旋回を阻止するリブを設けてなるもので、一旦微細塵溜まり部に捕獲された微細塵が、第三遠心力集塵部の旋回流の影響を受けて舞い上がり排気パイプから流出するのを防止することができる。
【００２３】
本発明の請求項１３記載の発明は、遠心力集塵装置を可透性材料で構成してなるもので、外容器への塵埃の堆積状態が容易に視認できるだけでなく、万一、遠心力集塵部ユニットに塵埃が詰まったときにも容易に内部が視認できる。
【００２４】
本発明の請求項１４記載の発明は、掃除機本体には吸引ファンモータを内蔵し、前記掃除機本体の吸引側にホースを接続する本体吸気口を形成するとともに、前記本体吸気口の後方に請求項１〜１３のいずれか１項に記載の遠心力集塵装置を組み込む負圧室を形成し、前記遠心力集塵装置の上部に蓋体を設けるとともに、前記蓋体を開いて前記遠心力集塵装置を着脱するもので、ゴミ捨て時に、前記蓋体を開いて遠心力集塵装置の離脱を行うだけでゴミ捨てが簡単に行える。
【００２５】
本発明の請求項１５記載の発明は、掃除機本体には吸引ファンモータを内蔵し、前記掃除機本体の吸引側にホースを接続する本体吸気口を形成するとともに、前記本体吸気口の後方に請求項１〜１３のいずれか１項に記載の遠心力集塵装置を組み込む負圧室を形成し、前記遠心力集塵装置の上部に蓋体を設けて、蓋体の閉塞により遠心力集塵装置を介して本体吸気口から吸引ファンモータへへ連通する流路を形成してなるもので、遠心力集塵装置の排気パイプと吸引ファンモータへの複雑な接続とシールが蓋体の掃除機本体への閉塞により不要になり、構成の簡単な遠心力集塵式電気掃除機が提供できる。また、掃除機本体の吸引側に負圧室を形成した構成は紙袋式の電気掃除機と同じ構成のため、容易に遠心力集塵式と紙袋式の互換性のある電気掃除機が提供できる。
【００２６】
本発明の請求項１６記載の発明は、遠心力集塵装置内の負圧を検知して、前記遠心力集塵装置内に大気を導入する弁装置を設けてなるもので、遠心力集塵装置の外容器が、塵埃で一杯になって空気の流れが阻害されたときでも吸引ファンモータの温度上昇を防止できる。
【００２７】
【実施例】
（実施例１）
以下本発明の第１の実施例を、図１〜図６を用いて説明する。
【００２８】
有底の略円筒形の外容器１ｂと、前記外容器１ｂの上方にはサイクロン作用を生み出すよう略接線方向より含塵空気を導入する吸気口２と、下部には粗塵溜まり１ａを設けて第一遠心力集塵部１を構成している。前記外容器１ｂの内壁側には、前記吸気口２より導入した含塵空気を回転に伴って下方に導くようスパイラル状のガイド３を設けており、塵埃はこのガイド３により速やかに前記粗塵溜まり（第一集塵部）１ａに堆積される。ガイド３により塵埃の旋回下降力をより有効に利用してゴミ圧縮性能が向上でき、塵埃の舞い上げを減少させる。前記外容器１ｂの内部には、外容器１ｂにセットした状態で外容器１ｂの上部開口を閉塞する遠心力集塵部ユニット４が設けられている。前記遠心力集塵部ユニット４の前記外容器１ｂの内部側には、図３、図４に示すように両面Ｄカットしたような形状で前記外容器１ｂの内周から一定の距離を置いて一対の対面に平行に穿孔面５が形成されている。前記外容器１ｂ内周を旋回する平行の空気層と、平行に構成された穿孔面５の間に空気溜まり部が出来、下方に旋回してきた空気がこの空気溜まり部から上昇することにより、下降風と上昇風がぶつかって流路圧損になることが軽減できる。前記穿孔面５には図６に示すように下方が径小で上方が径大に形成した多数の穿孔５ａが形成されており、穿孔５ａへと気流が流れる訳であるが、粗塵溜まり部においても一般的に質量が大きい塵埃は下部に、質量が小さくて体積の大きい塵埃は上方に堆積されやすいので、塵埃が下流に堆積しても空気の流通性を確保することができる。また、穿孔５ａの総面積は前記吸気口１の面積の３倍以上にしているので、穿孔５ａを通過するときの流速を遅くすることができるため、穿孔５ａから空気の流れとともに流出する塵埃量を減少させることができる。前記穿孔面５の内側には第二遠心力集塵部６が構成されており、第二遠心力集塵部６下方には第二導入口７が形成されている。第二導入口７は、前記第二遠心力集塵部壁６ｂの内径に対してサイクロン作用を生み出すよう略接線方向に形成されている。前記第二遠心力集塵部６の上方外側には穿孔面５を外れ下部細塵溜まり６ａ（第二集塵部）に連通する連通口８が形成されており、図４に示すように前記第二導入口７に対応した吸気側の面に穿孔面５が来るように配置している。前記穿孔面５と連通口８は複数の隔壁９により分離しており、これに対応して前記第二導入口７も複数箇所形成している。前記穿孔５ａを通過した細塵を含んだ空気が前記第二導入口７から導入され、前記第二遠心力集塵部壁６ｂの内周を旋回して上昇する。前記第二遠心力集塵部６の上方には外側の連通口８へ傾斜する傾斜壁１０を設けて第二遠心力集塵部で上方に上がった細塵を前記傾斜壁１０に衝突させることで下部細塵溜まり６ａに集塵させることができる。前記第二遠心力集塵部６の内側には下方に向かう第三遠心力集塵部１１が構成されており、第三遠心力集塵部１１上方には第三導入口１２が形成されている。第三導入口１２は前記第三遠心力集塵部１１の内径に対してサイクロン作用を生み出すよう略接線方向に形成されている。また、前記第三遠心力集塵部１１の下部には微細塵溜まり１１ａを形成している。前記第二遠心力集塵部６で細塵を分離された空気にも微細塵が含まれており、この空気が前記第三導入口１２から前記第三遠心力集塵部１１に導入され、旋回流によって微細塵が分離されて前記微細塵溜まり１１ａに捕獲される。微細塵溜まり（第三集塵部）１１ａ部には前記第三遠心力集塵部１１の旋回流による微細塵の旋回を阻止するリブ１３を設けている。前記第三遠心力集塵部１１の中央上部には排気パイプ１４が設けられており、塵埃を分離された空気だけが排気される。前記リブ１３は、一旦微細塵溜まり部（第三集塵部）１１ａに捕獲された微細塵が第三遠心力集塵部１１の旋回流の影響を受けて舞い上がり、排気パイプ１４から流出するのを防止することができる。前記外容器１ｂの底面にはパッキンａ１５が、前記遠心力集塵部ユニット４の底面の細塵溜まり（第二集塵部）６ａ、微細塵溜まり（第三集塵部）１１ａを気密にシールしている。また、前記外容器１ｂの上部開口と前記第二遠心力集塵部ユニット４の上部は、パッキンｂ１６によりシールされているため、前記吸気口２から導入された含塵空気はそれぞれのサイクロンで塵埃が分離され、リークすることなくきれいな空気だけが前記排気パイプ１４から排出される訳である。
【００２９】
図５に示すように遠心力集塵部ユニット４は、主に排気パイプ１４および傾斜壁１０を有する部品４ａと、第二遠心力集塵部壁６ｂを有する部品４ｂと、第三遠心力集塵部を構成する部品４ｃの３部品で構成し、ネジ(図示せず)により組み合わせて一体化しているので、１つづつの部品製作が容易で第二導入口７や第三導入口１２等の入り組んだ複雑な構成が簡単に形成できる。また、前記外容器１ｂの内側に粗塵溜まり１ａ（第一集塵部）を、第二遠心力集塵部６下部に細塵溜まり（第二集塵部）６ａを、第三遠心力集塵部１１下部に微細塵溜まり（第三集塵部）１１ａを、外容器１ｂと遠心力集塵部ユニット４の組み合わせ状態で構成すると共に、遠心力集塵部ユニット４の離脱において前記３箇所の塵埃は外容器１ｂ内に収容されるように構成しているので、ゴミ捨て時に遠心力集塵部ユニット４の離脱を行うだけで、全ての塵埃が外容器１ｂ内に残留しゴミ捨てが簡単に行える。更に、外容器１ｂ及び遠心力集塵部ユニット４を透明材料で構成しているので、外容器１ｂへの塵埃の堆積状態が容易に視認できるだけでなく、万一遠心力集塵部ユニット４に塵埃が詰まったときにも容易に内部が視認できる。
【００３０】
また、図７のように、穿孔面５に設けた穿孔５ａは外容器１ｂの旋回気流の後方側に向け傾斜させることで、旋回中の塵埃が直接第二導入口７に侵入する割合を減少させることが出来、第二遠心力集塵部６での分離の負担を軽減させ捕集効率を良くすることができる。
【００３１】
図８は、前記遠心力集塵装置を電気掃除機に組み込んだ実施例を示すもので、掃除機本体１７には吸引ファンモータ１８を内蔵し、前記掃除機本体１７の吸引側に遠心力集塵装置を組み込む負圧室１９を形成し、更に、前方吸引側にホース（図示せず）を接続する本体吸気口２０を形成し、前記サイクロン作用による遠心力集塵装置の上部に蓋体２１を設けて、蓋体２１の閉塞により遠心力集塵装置を介して本体吸気口２０から吸引ファンモータ１８への流路を形成するようにしたので、遠心力集塵装置の排気パイプ１４と吸引ファンモータ１８への複雑な接続とシールが、蓋体２１の掃除機本体１７への閉塞により不要になり、構成の簡単な遠心力集塵式の電気掃除機が構成できる。また、掃除機本体１７の吸引側に負圧室１９を形成した構成は、紙袋式の電気掃除機と同じ構成のため、容易に遠心力集塵装置と紙袋式の互換性のある電気掃除機が提供できる。さらに、遠心力集塵装置は、前記蓋体２１を開いて前記遠心力集塵装置を上下方向に着脱するもので、ゴミ捨て時に、前記蓋体２１を開いて遠心力集塵装置の離脱を行うだけでゴミ捨てが簡単に行える。
【００３２】
図９は、穿孔面５の下流側に、負圧を検知して大気を導入する弁装置２２を設けたので、遠心力集塵装置の外容器１ｂが塵埃で一杯になって空気の流通が阻害されたときの吸引ファンモータの温度上昇を防止できる。また、穿孔面５と第二導入口７の間に配置することで、弁装置２２の動作で穿孔５ａを通過して溜まった綿ゴミなどを吹き飛ばし、内部でのゴミ詰まりを未然に防止することができる。
【００３３】
【発明の効果】
本発明によれば、略円形の外容器と前記外容器の内壁に沿って空気を下方に向かい旋回させるサイクロン作用により塵埃を集塵する第一遠心力集塵部と、前記第一遠心力集塵部に連通し下方に設けた第二導入口から上方に向かい空気を旋回させるサイクロン作用により塵埃を集塵する第二遠心力集塵部と、前記第二遠心力集塵部に連通し上方に設けた第三導入口から下方に向かい空気を旋回させるサイクロン作用により塵埃を集塵する第三遠心力集塵部から構成される遠心力集塵装置としたもので、遠心力集塵部を３箇所内方へと設けることで、サイクロン部の長さが短かくても実質の集塵量が多く、第一遠心力集塵部を通過した細塵も第二遠心力集塵部、第三遠心力集塵部で分離捕集でき捕集効率を良くすることができる。
【図面の簡単な説明】
【図１】本発明の第１の実施例を示す遠心力集塵装置の縦断面図
【図２】同遠心力集塵装置の横断面図
【図３】図１のＡ−Ａ断面図
【図４】図２のＢ−Ｂ断面図
【図５】同第二遠心力集塵部ユニットの構成を示す分解断面図
【図６】同第二遠心力集塵部ユニットの穿孔面の正面図
【図７】図１の他のＡ−Ａ断面図
【図８】同遠心力集塵装置を組み込んだ電気掃除機の断面図
【図９】同遠心力集塵装置を組み込んだ電気掃除機に弁装置を設けた例の部分断面図
【図１０】従来の遠心力集塵装置の一例を示す断面図
【図１１】従来の他の遠心力集塵装置を組み込んだ電気掃除機断面図
【図１２】同他の遠心力集塵装置の断面図
【符号の説明】
１第一遠心力集塵部
１b 外容器
２吸気口
５穿孔面
５ａ穿孔
６第二遠心力集塵部
７第二導入口
８連通口
９隔壁
１０傾斜壁
１１第三遠心力集塵部
１４排気パイプ[0001]
BACKGROUND OF THE INVENTION
The present invention is based on an improvement of a centrifugal dust collecting device by a cyclonic action, which increases the substantial dust collecting capacity by compressing the dust and improves the collection efficiency of the dust by the centrifugal force collecting by the cyclonic action. Provide a dust device.
[0002]
[Prior art]
A conventional centrifugal dust collector using a cyclone action will be described with reference to FIGS.
[0003]
FIG. 10 shows the most common cyclonic dust collector using a cyclone action. A dust collecting chamber 102 is provided below a conical container body 101, and an intake pipe 103 for introducing dust-containing air from a substantially tangential direction is provided above. An exhaust pipe 104 is provided above the center.
[0004]
The dust-containing air introduced into the container main body 101 from the intake pipe 103 is separated in the dust collecting chamber 102 while turning around the inner surface of the container main body 101, and the air is discharged from the exhaust pipe 104.
[0005]
FIG. 11 shows an example in which the centrifugal dust collector is used in a vacuum cleaner, and a suction tool 202 is provided below the upright type vacuum cleaner body 201. A cylindrical first centrifugal dust collecting portion 203 is provided inside the upright type vacuum cleaner main body 201. A first air inlet 204 for introducing dust-containing air from a substantially tangential direction is provided above the first centrifugal dust collecting unit 203, and communicates with the suction tool 202 through a first passage 205. A conical second centrifugal force dust collecting portion 206 is provided inside the first centrifugal force dust collecting portion 203, and a fine dust chamber 207 is formed below. A second air inlet 208 for introducing dust-containing air from a substantially tangential direction is provided above the second centrifugal force dust collecting portion 206, and communicates with the first centrifugal force dust collecting portion 203 by a second passage 209. ing. An exhaust pipe 210 is provided above the center of the second centrifugal dust collection unit 206 and communicates with the fan motor 212 through the exhaust passage 211.
[0006]
Dust-containing air sucked from the suction tool 202 is introduced into the first centrifugal force dust collecting portion 203 through the first passage 205 from the first intake port 204, and the cyclone action in which dust is separated while turning the inner surface, It is deposited at the lower part of the first centrifugal dust collection unit 203. Fine dust that could not be separated by the first centrifugal force dust collecting unit 203 is introduced into the second centrifugal force dust collecting unit 206 from the second intake port 208 together with air, and the fine dust is separated while turning inside the fine dust chamber 207. To be captured. Exhaust gas discharged from the exhaust pipe 210 is sucked by the fan motor through the exhaust passage 211 and discharged outside the apparatus.
[0007]
FIG. 12 is similar to FIG. 11, but a first air inlet 302 for introducing dust-containing air from a substantially tangential direction is provided above the first centrifugal dust collecting portion 301. A conical second centrifugal force dust collecting portion 303 is provided inside the first centrifugal force dust collecting portion 301, and a fine dust chamber 304 is formed below. A second air inlet 305 for introducing dust-containing air from a substantially tangential direction is provided above the second centrifugal force dust collecting portion 303. The outer periphery of the second centrifugal force dust collecting part 303 is provided with a perforation 308 that allows the air of the first centrifugal force dust collecting part 301 to flow to the second air inlet 305, and the first centrifugal force collecting part 303 A shroud 306 arranged in parallel with a distance from the inner surface of the dust portion 301 is provided. An exhaust pipe 307 is provided above the center of the second centrifugal force dust collecting portion 303.
[0008]
The dust-containing air introduced into the first centrifugal force dust collecting part 301 from the first air inlet 302 is separated from the dust while rotating on the inner surface of the first centrifugal force dust collecting part 301. Is deposited. Fine dust that could not be separated by the first centrifugal force dust collecting portion 301 is introduced into the second centrifugal force dust collecting portion 303 from the second air inlet 305 through the shroud 306 together with air, and the fine dust is caused by the cyclone action that swirls the inner surface. Are separated and captured in the fine dust chamber 304, and the air is discharged from the exhaust pipe 307.
・
[Problems to be solved by the invention]
In such a conventional centrifugal dust collector with a cyclone action, the dust to be separated is swept up and discharged when affected by the air flow toward the exhaust pipe (210, 307), Since the collection efficiency is deteriorated, it is necessary to increase the length of the centrifugal dust collecting part due to the cyclone action, and the apparatus becomes large, so that there is a problem in incorporation into a low-height part or the apparatus. In addition, since dust accumulates only by its own weight and swirling flow, dust cannot be compressed against light and bulky dust such as cotton dust, so if the actual amount of dust collected is small for the size of the container There was a problem to say.
[0009]
The present invention solves the conventional problems as described above, and can be incorporated into a small and compact device without increasing the size of the main body, and can compress dust and has a substantial amount of dust collection and good collection efficiency. An object of the present invention is to provide a centrifugal dust collector using a cyclone action.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a first centrifugal force dust collecting part that collects dust by a cyclonic action that swirls air downward along the inner wall of the outer container, and the first centrifugal force dust collecting part. A second centrifugal force collecting part that collects dust by a cyclone action that swirls air upward from a second introduction port that is provided below, and an upper part that communicates with the second centrifugal force dust collecting part. This is a centrifugal dust collector consisting of a third centrifugal dust collector that collects dust by a cyclone action that swirls air downward from the third inlet, and has three centrifugal dust collectors. By providing inward, even if the cyclone part is short, there is a large amount of dust collection, and fine dust that has passed through the first centrifugal force dust collecting part is also the second centrifugal force collecting part, the third centrifugal part. Separation and collection can be performed by the force dust collection unit, and the collection efficiency can be improved.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a first centrifugal force dust collecting part that collects dust by a cyclonic action that swirls air downward along the inner wall of the outer container, and the first centrifugal force dust collecting part. A second centrifugal force collecting part that collects dust by a cyclone action that swirls air upward from a second introduction port that is provided below, and an upper part that communicates with the second centrifugal force dust collecting part. This is a centrifugal dust collector consisting of a third centrifugal dust collector that collects dust by a cyclone action that swirls air downward from the third inlet, and has three centrifugal dust collectors. By providing inward, even if the cyclone part is short, there is a large amount of dust collection, and fine dust that has passed through the first centrifugal force dust collecting part is also the second centrifugal force collecting part, the third centrifugal part. Separation and collection can be performed by the force dust collection unit, and the collection efficiency can be improved.
[0012]
In the invention according to claim 2 of the present invention, a spiral is introduced on the inner wall side of the outer container to guide the air introduced from the intake port, which is the air inlet to the first centrifugal dust collecting part, downward. A guide is provided to improve the dust compression performance by making effective use of the swivel descending force of the dust, reduce the dust rise, and reduce the amount of dust flowing into the second centrifugal force dust collecting part. As a result, it is possible to reduce the separation burden in the second centrifugal force dust collecting section and improve the collection efficiency.
[0013]
The invention according to claim 3 of the present invention is formed by providing a plurality of perforations on the inner wall surface of the first centrifugal force dust collecting part and communicating with a plurality of second inlets provided below the second centrifugal force dust collecting part. The air can move uniformly from the inner periphery of the outer container to the second inlet, preventing partial pressure differences and uneven flow velocity, and preventing fine dust from entering the second centrifugal force dust collector. Can be reduced. In addition, by using a plurality of second inlets, the wind speed can be increased by reducing the cross-sectional area per second inlet while securing the overall air volume, and the separation performance by the cyclone can be improved.
[0014]
In the invention according to claim 4 of the present invention, the perforations are inclined toward the rear side of the swirling airflow of the outer container, and the first is achieved by reducing the rate at which dust during swirling directly enters the second inlet. It is possible to reduce the burden of separation at the two centrifugal dust collecting section and improve the collection efficiency.
[0015]
In the invention according to claim 5 of the present invention, the perforation has a smaller diameter on the lower side and a larger diameter on the upper side. Since dust having a small volume and a large volume is likely to be deposited upward, air circulation can be ensured while preventing the dust from entering the second inlet.
[0016]
According to a sixth aspect of the present invention, an inclined wall inclined toward the upstream side of the swirling airflow is provided above the second centrifugal force dust collecting portion, and dust is collected by colliding dust-containing air against the inclined wall. Dust is collected below the second centrifugal force dust collecting part, and the fine dust that has risen upward in the second centrifugal force dust collecting part can be smoothly moved to the communication port, and the third centrifugal force dust collecting part By reducing the amount of dust flowing into the part, it is possible to reduce the separation burden in the third centrifugal force dust collecting part and improve the collection efficiency.
[0017]
According to the seventh aspect of the present invention, the wall having the perforations has a pair of opposed and parallel configurations, and is formed between the perforated surfaces configured in parallel with the parallel air layer swirling around the inner periphery of the outer container. Thus, an air reservoir portion is formed, and the air swirled downward is lifted from the air reservoir portion, so that it is possible to reduce the occurrence of flow path pressure loss due to the collision of the descending air and the rising air. In addition, the pins can be easily butted at the time of manufacturing the molding die, and the concern about the occurrence of burrs during molding can be reduced.
[0018]
According to an eighth aspect of the present invention, the centrifugal dust collecting device includes a substantially circular bottomed outer container, and a centrifugal dust collecting unit that is inserted into the outer container from above and closes the upper surface of the outer container. In addition, the centrifugal dust collecting unit is composed of three parts and combined and integrated, so that it is easy to manufacture one part at a time and a complicated structure can be formed.
[0019]
In the invention according to claim 9 of the present invention, the centrifugal dust collecting unit is made disassembleable by being integrated by screw tightening or the like. Maintenance can be easily performed even when the dust collector unit is clogged.
[0020]
The invention according to claim 10 of the present invention includes a first dust collecting part below the first centrifugal force dust collecting part, a second dust collecting part below the second centrifugal force dust collecting part, and a third centrifugal force dust collecting part. The third dust collecting part is composed of a combination of an outer container and a centrifugal dust collecting unit, and even if the centrifugal dust collecting unit is detached from the outer container, the dust in the three dust collecting parts is Since it remains in the outer container, all the dust is accommodated in the outer container simply by removing the centrifugal dust collecting unit at the time of throwing away the dust, so that the dust can be easily discarded.
[0021]
According to the eleventh aspect of the present invention, the total area of the perforations is three times or more than the area of the intake port, and the flow velocity when passing through the perforations can be slowed. By reducing the amount of dust flowing out to the dust part, it is possible to reduce the separation burden in the second centrifugal force dust collection part and improve the collection efficiency.
[0022]
According to a twelfth aspect of the present invention, the third dust collecting portion below the third centrifugal dust collecting portion is provided with a rib for preventing the swirling of the fine dust due to the swirling flow. It is possible to prevent the fine dust trapped in the air from flying up and flowing out of the exhaust pipe under the influence of the swirling flow of the third centrifugal dust collecting section.
[0023]
In the invention according to claim 13 of the present invention, the centrifugal dust collecting device is made of a permeable material, and not only the dust accumulation state in the outer container can be easily visually recognized, but also the centrifugal force should be avoided. Even when the dust collecting unit is clogged, the inside can be easily seen.
[0024]
According to a fourteenth aspect of the present invention, a suction fan motor is built in the vacuum cleaner body, a main body inlet that connects a hose is formed on the suction side of the cleaner main body, and behind the main body inlet. A negative pressure chamber in which the centrifugal dust collector according to any one of claims 1 to 13 is incorporated is formed, a lid is provided on an upper part of the centrifugal dust collector, the lid is opened, and the centrifugal separation is performed. A dust collector is attached and detached. When throwing away the dust, the lid can be opened and the centrifugal dust collector can be removed to easily discard the dust.
[0025]
According to a fifteenth aspect of the present invention, a suction fan motor is built in the vacuum cleaner body, a main body inlet that connects a hose is formed on the suction side of the cleaner main body, and behind the main body inlet. A negative pressure chamber into which the centrifugal dust collector according to any one of claims 1 to 13 is incorporated, a lid is provided on the centrifugal dust collector, and centrifugal force is collected by closing the lid. It forms a flow path that communicates from the main body inlet to the suction fan motor via a dust device, and the complicated connection and seal to the exhaust pipe of the centrifugal dust collector and the suction fan motor are used to clean the lid. A centrifugal dust collecting type vacuum cleaner with a simple configuration can be provided because it becomes unnecessary due to the blockage to the machine body. Moreover, since the structure which formed the negative pressure chamber in the suction | inhalation side of the vacuum cleaner main body is the same structure as a paper bag type vacuum cleaner, a vacuum cleaner with a centrifugal dust collection type and a paper bag type can be easily provided. .
[0026]
According to a sixteenth aspect of the present invention, there is provided a valve device for detecting the negative pressure in the centrifugal dust collector and introducing the atmosphere into the centrifugal dust collector. Even when the outer container of the apparatus is filled with dust and the air flow is obstructed, the temperature rise of the suction fan motor can be prevented.
[0027]
【Example】
(Example 1)
A first embodiment of the present invention will be described below with reference to FIGS.
[0028]
A substantially cylindrical outer container 1b with a bottom, an intake port 2 for introducing dust-containing air from a substantially tangential direction so as to generate a cyclonic action above the outer container 1b, and a coarse dust chamber 1a are provided at the lower part. The first centrifugal force dust collecting unit 1 is configured. A spiral guide 3 is provided on the inner wall side of the outer container 1b so as to guide the dust-containing air introduced from the intake port 2 downward along with the rotation. It accumulates in the reservoir (first dust collecting part) 1a. The guide 3 can effectively use the swirl lowering force of the dust to improve the dust compression performance and reduce the soaring of the dust. Inside the outer container 1b, there is provided a centrifugal dust collecting unit 4 that closes the upper opening of the outer container 1b in a state set in the outer container 1b. On the inner side of the outer container 1b of the centrifugal dust collecting unit 4, a certain distance is placed from the inner periphery of the outer container 1b in the shape of D-cut on both sides as shown in FIGS. A perforated surface 5 is formed parallel to the pair of facing surfaces. An air reservoir is formed between the parallel air layers swirling on the inner periphery of the outer container 1b and the perforated surface 5 configured in parallel, and the air swirled downwards rises from the air reservoir, and is lowered. It is possible to reduce the occurrence of flow path pressure loss due to the impact of wind and rising air. As shown in FIG. 6, the perforated surface 5 is formed with a large number of perforations 5a having a smaller diameter on the lower side and a larger diameter on the upper side, and the airflow flows into the perforated 5a. In general, dust having a large mass is likely to be deposited in the lower part and dust having a small mass and a large volume is likely to be accumulated upward, so that air circulation can be ensured even if dust accumulates downstream. Further, since the total area of the perforations 5a is three times or more than the area of the intake port 1, the flow rate when passing through the perforations 5a can be slowed, so the amount of dust flowing out from the perforations 5a along with the air flow Can be reduced. A second centrifugal force dust collecting portion 6 is formed inside the perforated surface 5, and a second introduction port 7 is formed below the second centrifugal force dust collecting portion 6. The second introduction port 7 is formed in a substantially tangential direction so as to produce a cyclone action with respect to the inner diameter of the second centrifugal dust collecting portion wall 6b. A communication port 8 is formed on the upper outer side of the second centrifugal dust collecting portion 6 so as to remove the perforated surface 5 and communicate with the lower fine dust reservoir 6a (second dust collecting portion), as shown in FIG. It arrange | positions so that the perforation surface 5 may come to the surface by the side of the intake corresponding to the 2nd inlet 7. FIG. The perforated surface 5 and the communication port 8 are separated by a plurality of partition walls 9, and the second introduction ports 7 are also formed at a plurality of locations correspondingly. Air containing fine dust that has passed through the perforations 5a is introduced from the second introduction port 7 and swirls around the inner periphery of the second centrifugal force collecting wall 6b and rises. An inclined wall 10 that is inclined toward the outer communication port 8 is provided above the second centrifugal force dust collecting portion 6 so that fine dust that has risen upward in the second centrifugal force dust collecting portion collides with the inclined wall 10. The dust can be collected in the lower fine dust pool 6a. A third centrifugal force dust collecting portion 11 directed downward is formed inside the second centrifugal force dust collecting portion 6, and a third inlet 12 is formed above the third centrifugal force dust collecting portion 11. Yes. The third inlet 12 is formed in a substantially tangential direction so as to produce a cyclonic action with respect to the inner diameter of the third centrifugal force dust collecting portion 11. Further, a fine dust reservoir 11 a is formed at the lower part of the third centrifugal force dust collecting portion 11. Fine air is also contained in the air from which fine dust has been separated by the second centrifugal force dust collecting unit 6, and this air is introduced from the third introduction port 12 to the third centrifugal force dust collecting unit 11, Fine dust is separated by the swirling flow and captured in the fine dust reservoir 11a. A rib 13 that prevents the fine dust from turning due to the swirling flow of the third centrifugal dust collecting portion 11 is provided in the fine dust reservoir (third dust collecting portion) 11a. An exhaust pipe 14 is provided at the upper center of the third centrifugal force dust collecting unit 11 and only air from which dust has been separated is exhausted. The rib 13 causes the fine dust once trapped in the fine dust reservoir portion (third dust collection portion) 11a to rise under the influence of the swirling flow of the third centrifugal dust collection portion 11 and flow out of the exhaust pipe 14. Can be prevented. A packing a15 is provided on the bottom surface of the outer container 1b to seal the fine dust reservoir (second dust collector) 6a and the fine dust reservoir (third dust collector) 11a on the bottom surface of the centrifugal dust collector unit 4 in an airtight manner. doing. Further, since the upper opening of the outer container 1b and the upper part of the second centrifugal dust collecting unit 4 are sealed by the packing b16, the dust-containing air introduced from the intake port 2 is dusted by each cyclone. Therefore, only clean air is discharged from the exhaust pipe 14 without leaking.
[0029]
As shown in FIG. 5, the centrifugal dust collecting unit 4 mainly includes a component 4 a having an exhaust pipe 14 and an inclined wall 10, a component 4 b having a second centrifugal force dust collecting portion wall 6 b, and a third centrifugal force collecting unit. Since it is composed of three parts 4c constituting the dust part and combined and integrated by screws (not shown), it is easy to manufacture parts one by one, such as the second introduction port 7 and the third introduction port 12 An intricate and complex configuration can be easily formed. Further, a coarse dust reservoir 1a (first dust collecting portion) is provided inside the outer container 1b, a fine dust reservoir (second dust collecting portion) 6a is provided below the second centrifugal force dust collecting portion 6, and a third centrifugal force collection. A fine dust reservoir (third dust collecting part) 11a is formed in the lower part of the dust part 11 in a combination state of the outer container 1b and the centrifugal force dust collecting part unit 4, and the three places in the separation of the centrifugal force dust collecting part unit 4 The dust is accommodated in the outer container 1b. Therefore, all the dust remains in the outer container 1b and can be discarded by simply removing the centrifugal dust collecting unit 4 when throwing away the dust. Easy to do. Furthermore, since the outer container 1b and the centrifugal dust collecting unit 4 are made of a transparent material, not only the dust accumulation state on the outer container 1b can be easily seen, The interior can be easily seen even when dust is clogged.
[0030]
Further, as shown in FIG. 7, the perforation 5a provided on the perforation surface 5 is inclined toward the rear side of the swirling airflow of the outer container 1b, thereby reducing the ratio of the dust that is swirling directly enters the second introduction port 7. It is possible to reduce the burden of separation at the second centrifugal dust collecting unit 6 and improve the collection efficiency.
[0031]
FIG. 8 shows an embodiment in which the centrifugal dust collecting device is incorporated in an electric vacuum cleaner. The vacuum cleaner body 17 has a suction fan motor 18 built in, and the centrifugal force collector is arranged on the suction side of the cleaner body 17. A negative pressure chamber 19 for incorporating a dust device is formed, and further, a main body inlet 20 for connecting a hose (not shown) is formed on the front suction side, and a lid 21 is provided on the upper part of the centrifugal dust collector by the cyclone action. Since the flow path from the main body inlet 20 to the suction fan motor 18 is formed through the centrifugal dust collector by closing the lid 21, the exhaust pipe 14 and the suction pipe of the centrifugal dust collector are sucked. A complicated connection and seal to the fan motor 18 are not required due to the closure of the lid 21 to the cleaner body 17, and a simple centrifugal force collecting vacuum cleaner can be configured. Further, the configuration in which the negative pressure chamber 19 is formed on the suction side of the vacuum cleaner main body 17 is the same as that of the paper bag type vacuum cleaner, so that it is easily compatible with the centrifugal dust collector and the paper bag type. Can be provided. Furthermore, the centrifugal dust collector opens and closes the centrifugal dust collector in the vertical direction by opening the lid 21. When the garbage is thrown away, the lid 21 is opened to remove the centrifugal dust collector. You can easily dispose of garbage just by doing it.
[0032]
In FIG. 9, since the valve device 22 for detecting the negative pressure and introducing the atmosphere is provided downstream of the perforation surface 5, the outer container 1b of the centrifugal dust collector is filled with dust, and the air circulation is performed. It is possible to prevent the temperature rise of the suction fan motor when it is obstructed. Further, by disposing between the perforation surface 5 and the second introduction port 7, the cotton dust or the like that has accumulated through the perforation 5 a by the operation of the valve device 22 is blown off to prevent internal clogging. Can do.
[0033]
【The invention's effect】
According to the present invention, a substantially circular outer container, a first centrifugal force collecting part for collecting dust by a cyclone action for turning air downward along the inner wall of the outer container, and the first centrifugal force collecting part A second centrifugal force collecting part that collects dust by a cyclone action that swirls air upward from a second introduction port provided below and communicated with the dust part, and an upper part that communicates with the second centrifugal force dust collecting part The centrifugal dust collector is composed of a third centrifugal dust collector that collects dust by a cyclone action that swirls air downward from the third inlet provided in the By providing inward three locations, even if the length of the cyclone portion is short, the substantial amount of dust collection is large, and fine dust that has passed through the first centrifugal force dust collecting portion is also the second centrifugal force dust collecting portion, It is possible to separate and collect in the three centrifugal force dust collecting section and improve the collection efficiency.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a centrifugal dust collecting apparatus according to a first embodiment of the present invention. FIG. 2 is a transverse sectional view of the centrifugal dust collecting apparatus. 4 is a cross-sectional view taken along line BB in FIG. 2. FIG. 5 is an exploded cross-sectional view showing the configuration of the second centrifugal force dust collecting unit. FIG. 6 is a front view of a perforated surface of the second centrifugal force dust collecting unit. 7 is another cross-sectional view taken along the line AA in FIG. 1. FIG. 8 is a cross-sectional view of an electric vacuum cleaner incorporating the centrifugal dust collector. FIG. 9 is an electric vacuum cleaner incorporating the centrifugal dust collector. FIG. 10 is a sectional view of an example of a conventional centrifugal dust collector. FIG. 11 is a sectional view of a vacuum cleaner incorporating another conventional centrifugal dust collector. 12 Cross section of other centrifugal dust collector 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 1st centrifugal force dust collection part 1b Outer container 2 Intake port 5 Perforated surface 5a Perforation 6 Second centrifugal force dust collection part 7 Second introduction port 8 Communication port 9 Partition 10 Inclined wall 11 Third centrifugal force dust collection part 14 Exhaust pipe

Claims

A first centrifugal force dust collecting part that collects dust by a cyclonic action that swirls air downward along the inner wall of the outer container, and a second introduction port provided below and communicating with the first centrifugal force dust collecting part A second centrifugal force collecting part that collects dust by a cyclonic action that swirls the air upward from the upper side, and a third centrifugal inlet that communicates with the second centrifugal force dust collecting part and passes the air downward from the third inlet. A centrifugal dust collector comprising a third centrifugal dust collector that collects dust by a rotating cyclone action.

The spiral guide which guides the air introduced from the inlet which is an inflow port of the air to the 1st centrifugal force dust collection part to the lower part according to rotation is provided in the inner wall side of an outer container. Centrifugal dust collector.

3. Centrifugal force dust collection according to claim 1 or 2, wherein a plurality of perforations are provided in an inner wall surface of the first centrifugal force dust collecting part and communicated with a plurality of second introduction ports provided below the second centrifugal force dust collecting part. apparatus.

The centrifugal dust collector according to claim 3, wherein the perforations are inclined toward the rear side of the swirling airflow of the outer container.

The centrifugal dust collector according to claim 3 or 4, wherein the perforation has a smaller diameter on the lower side and a larger diameter on the upper side.

An inclined wall that is inclined toward the upstream side of the swirling airflow is provided above the second centrifugal force dust collecting part, and dust is caused to collide with the inclined wall below the second centrifugal force dust collecting part. The centrifugal dust collector according to any one of claims 1 to 5, which collects dust.

The centrifugal force dust collecting device according to any one of claims 3 to 6, wherein the wall having the perforations has a pair of opposing and parallel configurations.

The centrifugal dust collector is composed of a substantially circular bottomed outer container and a centrifugal dust collecting unit that is inserted into the outer container from above and closes the upper surface of the outer container. The centrifugal dust collector according to any one of claims 1 to 7, wherein the unit is composed of three parts and combined and integrated.

The centrifugal dust collector according to claim 8, wherein the centrifugal dust collector unit can be disassembled by being integrated by screw tightening or the like.

The first dust collector below the first centrifugal dust collector, the second dust collector below the second centrifugal dust collector, and the third dust collector below the third centrifugal dust collector And a centrifugal force dust collecting unit unit, and even if the centrifugal dust collecting unit is detached from the outer container, the dust in the three dust collecting parts remains in the outer container. Or the centrifugal dust collector according to 9.

The centrifugal force dust collector according to any one of claims 3 to 10, wherein a total area of the perforations is three times or more of an inlet area.

The centrifugal dust collector according to any one of claims 1 to 11, wherein a rib for preventing swirling of fine dust due to swirling flow is provided in a third dust collecting portion below the third centrifugal dust collecting portion. .

The centrifugal dust collector according to any one of claims 1 to 12, wherein the centrifugal dust collector is made of a permeable material.

The vacuum cleaner main body has a built-in suction fan motor, and a main body intake port for connecting a hose to the suction side of the vacuum cleaner main body is formed, and at the rear of the main body intake port, any one of claims 1 to 13 The vacuum cleaner which forms the negative pressure chamber which incorporates the centrifugal force dust collector of description, provides a cover body in the upper part of the centrifugal dust collector, opens the cover body, and attaches / detaches the centrifugal dust collector.

The vacuum cleaner main body has a built-in suction fan motor, and a main body intake port for connecting a hose to the suction side of the vacuum cleaner main body is formed, and at the rear of the main body intake port, any one of claims 1 to 13 Forming a negative pressure chamber incorporating the centrifugal dust collector described above, providing a lid on the upper part of the centrifugal dust collector, and sucking fan from the main body inlet through the centrifugal dust collector due to the closure of the lid A vacuum cleaner formed with a flow path communicating with a motor.

16. The vacuum cleaner according to claim 14 or 15, further comprising a valve device that detects negative pressure in the centrifugal dust collector and introduces air into the centrifugal dust collector.