JPH01314531A - Dust detector for vacuum cleaner - Google Patents
Dust detector for vacuum cleanerInfo
- Publication number
- JPH01314531A JPH01314531A JP14740188A JP14740188A JPH01314531A JP H01314531 A JPH01314531 A JP H01314531A JP 14740188 A JP14740188 A JP 14740188A JP 14740188 A JP14740188 A JP 14740188A JP H01314531 A JPH01314531 A JP H01314531A
- Authority
- JP
- Japan
- Prior art keywords
- dust
- leeward
- tapered portion
- receiving element
- suction
- 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
- 239000000428 dust Substances 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- 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
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
- A47L9/2842—Suction motors or blowers
-
- 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
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
- A47L9/281—Parameters or conditions being sensed the amount or condition of incoming dirt or dust
- A47L9/2815—Parameters or conditions being sensed the amount or condition of incoming dirt or dust using optical detectors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Volume Flow (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は塵を吸引する吸込み通路内に流れる塵量を検知
する電気掃除機の塵検知装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a dust detection device for a vacuum cleaner that detects the amount of dust flowing into a suction passage for sucking dust.
従来の技術
近年、電気掃除機の清掃能力の向上が強く望まれてきて
おり、そのだめ、吸引する塵量に応じてファンモータを
制御して吸引力を可変し、吸引する塵量に適した制御を
行うことが考えられている。Conventional technology In recent years, there has been a strong desire to improve the cleaning ability of vacuum cleaners. Control is being considered.
従来の吸込み塵量を検知する電気掃除機の塵検知装置の
構成を第４図により説明する。図において、１は一端が
吸込みノズルに接続される吸込み通路で、その他端はフ
ァンモータ２の吸込室に接続されている。この通路１は
円筒状をなし、その内部に臨ませて発光素子３が取り付
けられ、この発光素子３と対向する位置に受光素子４を
配し、発光素子３の光を受光可能としている。６は発光
素子３および受光素子４を保護する透光性カバーで、発
光素子３および受光素子４を覆って通路１内に臨んでい
る。また、受光素子４には検知部６が接続されており、
その検知部６が通路１内を流量にもとづいてファンモー
タ２の回転を制御し、通路１内の吸引力制御を行ってい
た。The configuration of a conventional dust detection device for a vacuum cleaner that detects the amount of suctioned dust will be explained with reference to FIG. In the figure, 1 is a suction passage whose one end is connected to a suction nozzle, and the other end is connected to a suction chamber of a fan motor 2. The passage 1 has a cylindrical shape, and a light emitting element 3 is attached facing the inside of the passage 1. A light receiving element 4 is arranged at a position facing the light emitting element 3, so that the light from the light emitting element 3 can be received. Reference numeral 6 denotes a translucent cover that protects the light emitting element 3 and the light receiving element 4, and faces the inside of the passage 1 while covering the light emitting element 3 and the light receiving element 4. Further, a detection unit 6 is connected to the light receiving element 4,
The detection unit 6 controls the rotation of the fan motor 2 based on the flow rate in the passage 1, thereby controlling the suction force in the passage 1.
発明が解決しようとする課題
従来の構成では、通路１が円筒形状であるため、図中の
矢印Ａの空気流を７アンモータ２によシ発生させると、
この通路１内を流れる塵の一部は矢印Ｂに示すように通
路１内壁に沿って流れ、通路１内に臨ませた透光カバー
６に付着して通路１内の光透過率を正確に検知できなく
なるという課題を有していた。また、通路１内全体を流
れている塵を検知する発光素子３および受光素子４の検
知領域は第５図に示すようにＣ部分であり、残シの通路
１の断面Ｅを通過する塵については検知できず、検知精
度が低いという課題を有していた。Problems to be Solved by the Invention In the conventional configuration, the passage 1 has a cylindrical shape, so when the air flow indicated by the arrow A in the figure is generated by the motor 2,
A part of the dust flowing inside the passage 1 flows along the inner wall of the passage 1 as shown by arrow B, and adheres to the transparent cover 6 facing the inside of the passage 1, so that the light transmittance inside the passage 1 can be accurately measured. The problem was that it could no longer be detected. In addition, the detection area of the light emitting element 3 and the light receiving element 4 that detect dust flowing through the entire passage 1 is part C as shown in FIG. cannot be detected, and the detection accuracy was low.
本発明は上記課題に鑑み、塵の付着による塵検知能力の
低下を防止するとともに、検知精度の向上を図ることを
目的とする。In view of the above problems, it is an object of the present invention to prevent the deterioration of dust detection ability due to adhesion of dust and to improve detection accuracy.
課題を解決するだめの手段
上記目的を達成するために本発明は、塵を吸引する吸込
み通路と、この吸込み通路内に光を照射する発光素子と
、この発光素子からの光を受光する受光素子と、この受
光素子の出力に応じて塵量を検知する検知部を備え、前
記吸込み通路には風下側に小となるテーパー部を形成し
、前記発光素子および受光素子を前記テーパー部の風下
側終端近傍の吸込み通路内に臨ませた構成である。Means for Solving the Problems In order to achieve the above objects, the present invention provides a suction passage for sucking dust, a light emitting element for irradiating light into the suction passage, and a light receiving element for receiving light from the light emitting element. and a detection part that detects the amount of dust according to the output of the light receiving element, a tapered part that becomes smaller on the leeward side is formed in the suction passage, and the light emitting element and the light receiving element are arranged on the leeward side of the tapered part. It is configured so that it faces into the suction passage near the terminal end.
作 用
上記構成によれば、テーパー部で吸込み通路内を流れる
塵の流れ方向を通路中心方向に変更し、テーパー部終端
では塵は中心方向に飛び出すため、その終端近傍の通路
内面に塵が付着するのを防止でき、長期にわたって発光
素子の光照射あるいは受光素子への受光を避ぎることが
ない。また、テーパー部は塵を通路の中心方向に集中さ
せる作用をするため、発光素子および受光素子の検知領
域を通過する塵の割合を高め、検知精度の向上を図るこ
とができる。Effect According to the above configuration, the flow direction of the dust flowing in the suction passage is changed in the direction of the passage center at the taper part, and the dust flies out towards the center at the end of the taper part, so that dust adheres to the inner surface of the passage near the end. This prevents light irradiation from the light-emitting element or light reception from the light-receiving element from being avoided for a long period of time. Further, since the tapered portion has the effect of concentrating dust toward the center of the passage, it is possible to increase the proportion of dust that passes through the detection areas of the light emitting element and the light receiving element, thereby improving detection accuracy.
実施例
以下、本発明の実施例を＃！１図〜第３図によシ説明す
る。Examples Below, examples of the present invention will be described. This will be explained with reference to FIGS. 1 to 3.
第１図および第２図において、７は操作ハンドル８に一
体的に形成した吸込み通路で、その風上側端部には、延
長管を介して床ノズルが接続され、また風下側端部はホ
ースを介して電気掃除機の吸引室に連絡される。1 and 2, reference numeral 7 denotes a suction passage formed integrally with the operating handle 8, the windward end of which is connected to a floor nozzle via an extension pipe, and the leeward end of which is connected to a hose. It is connected to the suction chamber of the vacuum cleaner through.
吸込み通路７の一部には風下側が径小となるテーパー部
９を形成し、このテーパー部９の終端９ａ近傍には、対
向配設した発光素子３および受光素子４を透光性カバー
５を介して通路７内に臨ませている。６は受光素子４の
検知した受光量に応じて塵量を検知し、吸引室内のファ
ンモータを制御して吸引制御を行う。A tapered portion 9 whose diameter is smaller on the lee side is formed in a part of the suction passage 7, and near the end 9a of this tapered portion 9, a light-emitting element 3 and a light-receiving element 4, which are arranged opposite to each other, are covered with a translucent cover 5. It faces into the passageway 7 through it. 6 detects the amount of dust according to the amount of light received by the light receiving element 4, and controls the fan motor in the suction chamber to perform suction control.
次に、動作を説明する。まず、ファンモータを動作させ
ると、吸込み通路Ｔ内に第１図の矢印Ｆの方向の空気流
が発生する。この空気流に乗って塵１０が運ばれる。空
気流はテーパー部９によυ向きを通路７の中心方向に変
更され、よって塵１゜の流れもこの方向に変更される。Next, the operation will be explained. First, when the fan motor is operated, an air flow is generated within the suction passage T in the direction of arrow F in FIG. The dust 10 is carried along with this air flow. The υ direction of the air flow is changed toward the center of the passage 7 by the tapered portion 9, and therefore the flow of dust 1° is also changed in this direction.
テーパー部９の終端９ａより風下側では、空気流は通路
１の内壁面に沿って流れようとする（コアンダー効果）
が、塵１ｏは質量を有するため、破線矢印Ｇのように通
路７の中心方向に向いて飛び出すことができ、透光カバ
ー６に塵１０が付着することを防止できる。また、テー
パー部ｅより風下側の通路７の内径Ｒを従来の通路７の
内径と同一とした場合、塵はテーパー部９により中心方
向に流れを変更されるため、第３図に示すよう・に発光
素子３および受光素子４の検知面では斜線Ｈで示すよう
に中心に塵を集中でき、上記各素子３，４の検知領域Ｉ
内により多くの塵を通過させることができ、塵検知精度
を高めることができる。On the leeward side of the terminal end 9a of the tapered portion 9, the airflow tends to flow along the inner wall surface of the passage 1 (Coander effect).
However, since the dust 1o has mass, it can fly out toward the center of the passage 7 as indicated by the broken line arrow G, and it is possible to prevent the dust 10 from adhering to the transparent cover 6. Furthermore, if the inner diameter R of the passage 7 on the leeward side of the tapered part e is the same as the inner diameter of the conventional passage 7, the flow of dust is changed toward the center by the tapered part 9, so that On the detection surfaces of the light-emitting element 3 and the light-receiving element 4, dust can be concentrated in the center as shown by the diagonal line H, and the detection area I of each of the elements 3 and 4 is
This allows more dust to pass through and improves dust detection accuracy.
発明の効果
以上の実施例から明らかなように本発明によれば、テー
パー部により塵の流れを通路の中心方向に変更するため
、テーパー部の終端に位置する塵検知部に塵が付着する
ことを防止でき、しかも、吸込み通路内の塵を中心に集
中させることができ、検知精度を高めることができる。Effects of the Invention As is clear from the above embodiments, according to the present invention, since the tapered portion changes the flow of dust toward the center of the passage, dust does not adhere to the dust detection portion located at the end of the tapered portion. In addition, dust in the suction passage can be concentrated in the center, and detection accuracy can be improved.
第１図は本発明の一実施例を示す電気掃除機の塵検知装
置の縦断面図、第２図は同装置を収納した操作ハンドル
の一部破断側面図、第３図は同装置の横断面図、第４図
は従来の電気掃除機の塵検知装置の縦断面図、第６図は
同装置の横断面図である。
３・・・・・・発光素子、４・・・・・・受光素子、６
・・・・・・透光性カバー、ｅ・・・・・・検知部、９
・・・・・・テーパー部、９ａ・・・・・・終端、１ｏ
・・・・・・塵。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名３−
発光素子
仝・−受光素子
Ｓ−・・透光性オバー
７・−・吸込みｔ訃
９− テーパー郡
Ｑｔ・−終端
１０・−・塵
第３図Fig. 1 is a vertical sectional view of a dust detection device for a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a partially cutaway side view of an operating handle housing the device, and Fig. 3 is a cross-sectional view of the device. 4 is a longitudinal sectional view of a conventional vacuum cleaner dust detection device, and FIG. 6 is a cross sectional view of the same device. 3... Light emitting element, 4... Light receiving element, 6
...Translucent cover, e...Detection section, 9
...Tapered part, 9a...Terminal, 1o
······dust. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
Light emitting element - Light receiving element S - Translucent over 7 - Suction 9 - Taper group Qt - Termination 10 - Dust Fig. 3
Claims (1)
射する発光素子と、この発光素子からの光を受光する受
光素子と、この受光素子の出力に応じて塵量を検知する
検知部を備え、前記吸込み通路には風下側に小となるテ
ーパー部を形成し、前記発光素子および受光素子を前記
テーパー部の風下側終端近傍の吸込み通路内に臨ませた
電気掃除機の塵検知装置。A suction passage that sucks in dust, a light emitting element that irradiates light into this suction passage, a light receiving element that receives light from the light emitting element, and a detection unit that detects the amount of dust according to the output of this light receiving element. A dust detection device for a vacuum cleaner, wherein the suction passage has a tapered part that becomes smaller on the leeward side, and the light emitting element and the light receiving element face into the suction passage near the leeward end of the tapered part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14740188A JPH01314531A (en) | 1988-06-15 | 1988-06-15 | Dust detector for vacuum cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14740188A JPH01314531A (en) | 1988-06-15 | 1988-06-15 | Dust detector for vacuum cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01314531A true JPH01314531A (en) | 1989-12-19 |
Family
ID=15429455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14740188A Pending JPH01314531A (en) | 1988-06-15 | 1988-06-15 | Dust detector for vacuum cleaner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01314531A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0499059U (en) * | 1991-01-30 | 1992-08-27 | ||
| JP2013046689A (en) * | 2011-08-29 | 2013-03-07 | Toshiba Corp | Vacuum cleaner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118126A (en) * | 1982-11-20 | 1984-07-07 | ブラザー工業株式会社 | Electric cleaner |
| JPS6274326A (en) * | 1985-09-28 | 1987-04-06 | インタ−ラバ アクチエンゲゼルシヤフト | Vacuum cleaner |
-
1988
- 1988-06-15 JP JP14740188A patent/JPH01314531A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118126A (en) * | 1982-11-20 | 1984-07-07 | ブラザー工業株式会社 | Electric cleaner |
| JPS6274326A (en) * | 1985-09-28 | 1987-04-06 | インタ−ラバ アクチエンゲゼルシヤフト | Vacuum cleaner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0499059U (en) * | 1991-01-30 | 1992-08-27 | ||
| JP2013046689A (en) * | 2011-08-29 | 2013-03-07 | Toshiba Corp | Vacuum cleaner |
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