JPH0386133A

JPH0386133A - Vacuum cleaner

Info

Publication number: JPH0386133A
Application number: JP22530889A
Authority: JP
Inventors: Toshio Koike; 利男小池; Yoshihiro Noguchi; 善弘野口
Original assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Priority date: 1989-08-31
Filing date: 1989-08-31
Publication date: 1991-04-11

Abstract

PURPOSE:To improve heat insulating efficiency with simple constitution by providing a radiator which cools the circuit element of an electrical circuit part at a dust collection room. CONSTITUTION:A fan 42 is rotated by driving the motor 43 of an electric blower 41 in a main body 10, and the air just sucked from a floor brush, etc., and with a low temperature flows the plane of the radiator 44 provided on the dust collection room 20 at an upstream side. The air flowing along the radiator 44 is exhausted outside the main body 10 from an exhausting port 16 passing through a blower room 40 while cooling heat in the radiator 44 and being carried. Thus, the use of an air current for dust collection for radiation can be performed reasonably, and superior heat insulating efficiency is obtained, and the heat in the electric circuit part 45 can be effectively radiated, which prevents malfunction due to the heat occurring.

Description

【発明の詳細な説明】［産業上の利用分野］本発明は、家庭用の電気掃除機に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a household vacuum cleaner.

［従来の技術］電気掃除機における電動送風機用の電動機をいわゆるイ
ンバータ制御すれば、ブラシレスに構成できるばかりか
、電源周波数に影響されない等の種々の特徴がある。し
かしながら、制御回路にトランジスタやサイリスタなど
の半導体の回路素子を用いるので、電気回路部の温度上
昇を防止するための放熱に特別な配電が必要になる。こ
れに対し、従来のこの種の装置では、送風室の排気口の
近くにＬ字形のアルミニュームの放熱板を設けて、この
放熱板に回路素子を取り付ける程度で、事実上放熱対策
について配慮されていないのが実情であった。[Prior Art] If the motor for the electric blower in a vacuum cleaner is controlled by a so-called inverter, it not only can be configured brushless but also has various features such as being unaffected by the power frequency. However, since semiconductor circuit elements such as transistors and thyristors are used in the control circuit, special power distribution is required for heat dissipation to prevent the temperature of the electric circuit section from rising. On the other hand, in conventional devices of this type, an L-shaped aluminum heat sink is installed near the exhaust port of the ventilation chamber, and circuit elements are mounted on this heat sink, and virtually no consideration is given to heat radiation measures. The reality was that they were not.

〔発明が解決しようとする課題］上述したように、従来の電気掃除機では、電気回路部の
放熱対策について殆ど配慮されていなかった。このため
、電気回路部の回路素子が熱に影響されて、出力特性等
が悪くなることがあった。[Problems to be Solved by the Invention] As described above, in conventional vacuum cleaners, little consideration has been given to heat dissipation measures for the electric circuit section. For this reason, the circuit elements of the electric circuit section may be affected by heat, resulting in poor output characteristics and the like.

また、集塵室のゴミ類が溜まったりフィルタが目詰りを
起こすと、電動機の温度が高くなって回路素子に伝えら
れて誤動作したり制御精度が低下する等の問題点があっ
た。Furthermore, if dust accumulates in the dust collection chamber or the filter becomes clogged, the temperature of the motor increases and is transmitted to the circuit elements, causing problems such as malfunctions and decreased control accuracy.

本発明はこのような現状に着目して威されたもので、そ
の目的は、簡単な構成で放熱効率が良い電気掃除機を提
供することにある。The present invention was developed in view of the current situation, and an object of the present invention is to provide a vacuum cleaner with a simple configuration and good heat dissipation efficiency.

【課題を解決するための手段］本発明は、電気回路部の回路素子を冷却する放熱体を集
塵室に設けた電気掃除機を構成したものである。[Means for Solving the Problems] The present invention provides a vacuum cleaner in which a heat radiator for cooling circuit elements of an electric circuit section is provided in a dust collection chamber.

〔作　　用コ本体の電動送風機の電動機を駆動するとファンが回転し
、床ブラシ等から吸い込まれたばかりで低温度の空気が
上流側の集塵室に設けられた放熱体の面に沿って流れる
。放熱体に沿って流れた空気は放熱体の熱を奪って搬送
しながら、送風室を通って排気口から本体の外に排出さ
れる。[Operation] When the motor of the electric blower in the main unit is driven, the fan rotates, and the low-temperature air that has just been sucked in from the floor brushes, etc., flows along the surface of the heat radiator installed in the dust collection chamber on the upstream side. The air flowing along the heat radiator absorbs heat from the heat radiator and is transported through the ventilation chamber and is discharged from the main body through the exhaust port.

［実　施　例］第１図は本発明実施例の構成説明図、第２図は本体の背
面説明図、第３図は本体内部の原理的な構成説明図であ
る。[Embodiment] Fig. 1 is an explanatory view of the configuration of an embodiment of the present invention, Fig. 2 is an explanatory view of the rear side of the main body, and Fig. 3 is an explanatory view of the basic structure inside the main body.

第１図と第２図において、（１）は板床や絨穂床を示す
床面、（２〉は床ブラシ、（３）は延長パイプ、（４）
は可撓性のチューブである。チューブ（４〉の先端は手
元スイッチ（５）を設けた“くの字゛形の把持部（６）
が形成され、元の部分は差込部（７）になっている。（
１０）は、床面（１）の上に置かれた電気掃除機の本体
である。（１１）は蓋、（１２）は差込部（７）が差し
込まれる吸入口、（１３）は大小の車輪、（１４）は先
端にプラグを取り付けたコードである。In Figures 1 and 2, (1) is the floor surface showing the board floor or carpet floor, (2> is the floor brush, (3) is the extension pipe, (4)
is a flexible tube. The tip of the tube (4) is a dogleg-shaped grip (6) with a hand switch (5).
is formed, and the original part becomes an insertion part (7). (
10) is the main body of the vacuum cleaner placed on the floor (1). (11) is a lid, (12) is an inlet into which the insertion part (7) is inserted, (13) is a large and small wheel, and (14) is a cord with a plug attached to its tip.

また、（１５）は本体（ｌＯ〉の背面に設けられた単一
の孔で構成する集中排気口、（１Ｂ）は複数の孔からな
る分散排気口である。Further, (15) is a centralized exhaust port consisting of a single hole provided on the back surface of the main body (lO>), and (1B) is a distributed exhaust port consisting of a plurality of holes.

本体（１０〉の内部の構成が、第３図に示されている。The internal structure of the main body (10) is shown in FIG.

第３図の、（２０）は集塵室、（３０〉はコード室、（
４０）は送風室で、これらの各室は本体（１０）の内部
に区画されている。集塵室（２０）と送風室（４０〉と
は連通され、その仕切り、及び送風室（４０）の排気口
（１６）の内側には、発泡性の合成樹脂等で作られた微
塵用のフィルタ（Ｆ）が設けられている。（２１）はＭ
　（１１）を開けて取り替え可能に集塵室（２０）内に
収納された集塵袋、（８１）はコード室（３０）内に設
けられコード（Ｉ４）を巻き付けるリールである。〈４
１〉は送風室（４０）に取り付けられた電動送風機で、
ファン（４２）と電動機（４３）とからなる。また、（
４４）は放熱板で、放熱板（４４）は集塵室（２０）内
に設けられている。（４５）は電動機（４３）の回転を
制御する電気回路部、（４６）は電気回路部（４５）を
構成するプリント基板、（４７）はサイリスタのような
回路素子である。In Figure 3, (20) is the dust collection chamber, (30> is the cord chamber, (
40) is a ventilation chamber, and each of these chambers is divided inside the main body (10). The dust collection chamber (20) and the ventilation chamber (40> are in communication with each other, and inside the partition and the exhaust port (16) of the ventilation chamber (40), there is a dust collection chamber made of foamable synthetic resin, etc. A filter (F) is provided.(21) is M
(11) is a dust collection bag stored in the dust collection chamber (20) so that it can be opened and replaced, and (81) is a reel provided in the cord chamber (30) on which the cord (I4) is wound. <4
1> is an electric blower attached to the blower chamber (40),
It consists of a fan (42) and an electric motor (43). Also,(
44) is a heat sink, and the heat sink (44) is provided in the dust collection chamber (20). (45) is an electric circuit section that controls the rotation of the electric motor (43), (46) is a printed circuit board that constitutes the electric circuit section (45), and (47) is a circuit element such as a thyristor.

プリント基板（４６）上の一部の回路素子（４７）は放
熱板（４４〉に接触或いは埋め込まれて熱的に結合され
、回路素子（４７）が放熱板（４４）を介して放熱され
るようになっている。（４８〉は電源回路に直列に接続
された保護スイッチである。保護スイッチ（４８）は本
体〈ＩＯ〉の！（１１）と連動し、蓋（１１）を開ける
と電源が切れ、閉じると繋がるように動作する。Some of the circuit elements (47) on the printed circuit board (46) are thermally coupled by contacting or embedded in the heat sink (44), and the circuit elements (47) radiate heat through the heat sink (44). (48) is a protection switch connected in series to the power supply circuit.The protection switch (48) is linked with !(11) of the main body <IO>, and when the cover (11) is opened, the power is turned on. disconnects and connects when closed.

上述のような構成の本発明の電気掃除機の動作を、次に
説明する。The operation of the vacuum cleaner of the present invention configured as described above will be explained next.

コード（１４）のプラグをＡＣｌｏｏ　Ｖのコンセント
に差込んでから手元スイッチ（５）を入れると、掃除機
の本体（ｌＯ）内の電動機（４３〉が回転する。電動機
（４３）の回転で電動送風機（４１）が駆動されて、矢
印で示すように本体く１０）の内部で吸入口（１２）側
から吸込まれ集塵室（２０）と送風室（４０）を通って
分散排気口（ＩＢ）側に向かう空気流が形成される。When you insert the plug of the cord (14) into the outlet of ACloo V and turn on the hand switch (5), the electric motor (43) inside the main body (lO) of the vacuum cleaner will rotate.The rotation of the electric motor (43) will cause the electric The blower (41) is driven, and the air is sucked into the main body (10) from the suction port (12) side as shown by the arrow, passes through the dust collection chamber (20) and the ventilation chamber (40), and is discharged to the dispersed exhaust port (IB). ) an airflow is formed towards the side.

ここで、床ブラシ（２）を床面（１）に載せて前後に摺
動させると、床面（１）上のゴミや埃が床ブラシ（２）
と床面（１）との間に形成される隙間から吸込まれる。Here, when you place the floor brush (2) on the floor surface (1) and slide it back and forth, dirt and dust on the floor surface (1) will be removed from the floor brush (2).
and the floor surface (1).

吸込まれた塵埃は延長バイブ（３）とチューブ（４）を
介して本体（１０）の集塵室（２０）に収納されている
集塵袋（２１）に集塵される。集塵後の排気は、２か所
のフィルタ（Ｐ）で塵埃の微小成分が捕捉され、濾過後
の清浄な空気が分散排気口（１６）から本体（１０）の
外に吐き出される。The sucked dust is collected into a dust collection bag (21) housed in a dust collection chamber (20) of the main body (10) via an extension vibrator (3) and a tube (4). In the exhaust air after dust collection, minute components of dust are captured by two filters (P), and the filtered clean air is discharged from the main body (10) through the dispersion exhaust port (16).

掃除が進んで時間が経過すると、電動機（４３）の固定
子コイルや電源トランス等が時間の経過に連れて発熱す
る。これらの発生した熱や自身で生じた熱が電気回路部
（４５）の回路素子（４７）に留まると、電気的な特性
に悪影響を与えることになる。しかしながら、上記のよ
うに本体く１０〉に生じる矢印で示された空気流の上流
側の低い温度の空気が、集塵室（２０）に流入して放熱
板（４４）の面に沿って流れ去る。放熱板（４４）の面
に沿って流れた空気は放熱板（４４）の熱を奪って搬送
しながら、送風室（４０）を通って排気口（１Ｂ）から
本体（ｌＯ）の外に排出される。As cleaning progresses and time elapses, the stator coil, power transformer, etc. of the electric motor (43) generate heat over time. If the generated heat or the heat generated by itself remains in the circuit element (47) of the electric circuit section (45), it will adversely affect the electrical characteristics. However, as mentioned above, the lower temperature air on the upstream side of the air flow indicated by the arrow generated in the main body (10) flows into the dust collection chamber (20) and flows along the surface of the heat sink (44). leave. The air flowing along the surface of the heat sink (44) absorbs the heat of the heat sink (44) and is conveyed while passing through the ventilation chamber (40) and being discharged to the outside of the main body (lO) from the exhaust port (1B). be done.

この他、本体（１０）の蓋（１１）を開けると、保護ス
イッチ（４８）が動作して電源回路が遮断される。この
結果、集塵袋（２１）の交換等の操作中で電気回路部（
４５）に接触しても、感電等をすることなく安全に交換
等を行うことができる。この実施例によれば、電気回路
部（４５）の放熱が、本体（１０）の上流側で効果的に
行なわれる。In addition, when the lid (11) of the main body (10) is opened, the protection switch (48) is activated and the power supply circuit is cut off. As a result, during operations such as replacing the dust collection bag (21), the electric circuit section (
45), it can be replaced safely without getting an electric shock. According to this embodiment, heat radiation from the electric circuit section (45) is effectively performed on the upstream side of the main body (10).

なお、上述の実施例では掃除機の本体くｌＯ）と床ブラ
シ（２）とを延長パイプ（３）とチューブ（４）で接続
する構造の電気掃除機を図示して説明したが、ポット型
の電気掃除機にもこの発明を適用することができる。ま
た、第３図ではコード室（３０）と送風室（４０）が水
平・方向に隣り合せのものを図示したが、両室（３０〉
と（４０）を上下関係に配置した場合にも本発明を適用
することができる。また、吸入口（１２）が本体（１０
）の上面の場合で説明したが、本体（１０）の前部の側
面に設けてもよい。In addition, in the above-mentioned embodiment, a vacuum cleaner having a structure in which the main body of the vacuum cleaner and the floor brush (2) are connected by an extension pipe (3) and a tube (4) was illustrated and explained. This invention can also be applied to vacuum cleaners. In addition, in Fig. 3, the cord chamber (30) and the ventilation chamber (40) are shown adjacent to each other in the horizontal direction, but both chambers (30)
The present invention can also be applied to the case where and (40) are arranged in a vertical relationship. In addition, the inlet (12) is connected to the main body (10).
), but it may also be provided on the front side of the main body (10).

［発明の効果］以上のように、この発明は電気回路部の回路素子を冷却
する放熱体を集塵室に配置した本体を備えた電気掃除機
を構成した。そして、この放熱体を、本体に吸い込まれ
たばかりの低い温度の空気流に晒すようにした。この結
果、放熱のための集塵用の気流の利用が合理的で放熱効
率がよく、電気回路部の熱が効果的に放熱されて熱によ
る誤動作等を起こすようなことがない。[Effects of the Invention] As described above, the present invention provides a vacuum cleaner including a main body in which a heat radiator for cooling circuit elements of an electric circuit section is disposed in a dust collection chamber. This heat sink was then exposed to the low temperature air flow that had just been sucked into the main body. As a result, the use of airflow for collecting dust for heat radiation is rational and has good heat radiation efficiency, and the heat of the electric circuit section is effectively radiated, so that malfunctions due to heat will not occur.

よって、本発明によれば、集塵用の空気流を巧みに利用
して、簡単な構成で冷却効果が優れた電気掃除機を提供
することができる。Therefore, according to the present invention, it is possible to provide a vacuum cleaner with a simple configuration and excellent cooling effect by skillfully utilizing airflow for dust collection.

[Brief explanation of drawings]

第１図は本発明実施例の構成説明図、第２図は本体の背
面説明図、第３図は本体内部の原理的な構成説明図であ
る。図面において、（１〉は床面、（２）は床ブラシ、（３
）は延長バイブ、（４）はチューブ、（５）は手元スイ
ッチ、（６）は把持部、（７）は差込部、（１０）は掃
除機の本体、（１１）は蓋、（１２）は吸入口、（Ｉ３
）は車輪、（１４）はコード、（１５）は集中排気口、
（１Ｂ）は分散排気口、（２０）は集塵室、（２１）は
集塵袋、（３０）はコード室、（３Ｉ）はリール、（４
０）は送風室、（４１）は電動送風機、（４２）はファ
ン、（４３）は電動機、（４４）は放熱板、（４５）は
電気回路部、（４６）はプリント基板、（４７〉は回路
素子、（４８）は保護スイッチ、（Ｆ）はフィルタであ
る。なお、図中同一符号は同一または相当部分を示すものと
する。FIG. 1 is an explanatory view of the configuration of an embodiment of the present invention, FIG. 2 is an explanatory view of the rear side of the main body, and FIG. 3 is an explanatory view of the basic structure inside the main body. In the drawing, (1> is the floor surface, (2) is the floor brush, and (3) is the floor surface.
) is the extension vibrator, (4) is the tube, (5) is the hand switch, (6) is the grip part, (7) is the insertion part, (10) is the main body of the vacuum cleaner, (11) is the lid, (12 ) is the inlet, (I3
) is the wheel, (14) is the cord, (15) is the central exhaust port,
(1B) is a distributed exhaust port, (20) is a dust collection chamber, (21) is a dust collection bag, (30) is a cord chamber, (3I) is a reel, (4
0) is a ventilation chamber, (41) is an electric blower, (42) is a fan, (43) is an electric motor, (44) is a heat sink, (45) is an electric circuit section, (46) is a printed circuit board, (47> is a circuit element, (48) is a protection switch, and (F) is a filter. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of Claims] A dust collection chamber provided with an inlet to which a cleaning hose is connected and in which a dust collection bag is accommodated when the lid is opened, and an exhaust port communicated with the dust collection chamber provided with an electric blower inside. In the vacuum cleaner, the vacuum cleaner has a main body equipped with an air blowing chamber in which the electric blower is arranged, and a heat radiator for cooling circuit elements of an electric circuit section that controls the electric blower is arranged in the dust collecting chamber. vacuum cleaner.