JP4941855B2 - Electric blower - Google Patents

Electric blower Download PDF

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JP4941855B2
JP4941855B2 JP2005124687A JP2005124687A JP4941855B2 JP 4941855 B2 JP4941855 B2 JP 4941855B2 JP 2005124687 A JP2005124687 A JP 2005124687A JP 2005124687 A JP2005124687 A JP 2005124687A JP 4941855 B2 JP4941855 B2 JP 4941855B2
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impeller
electric blower
casing
brush seal
electric motor
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利昭 駒田
勝也 長谷川
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西芝電機株式会社
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Description

本発明は、例えば空調設備などに使用されて送・排風を行なう電動送風機に関する。  The present invention relates to an electric blower that is used in, for example, an air conditioner and the like to send and exhaust air.

例えば空調設備に使用される電動送風機は、羽根車を収納したケーシングと、羽根車を回転させる電動機とを備える構成が一般的である（例えば特許文献１参照）。従来の電動送風機の一例について図面を参照して説明する。図５（ａ）および（ｂ）は従来の電動送風機を示す図で、（ａ）は正面図、（ｂ）は（ａ）に示す電動送風機の下半分の一部を切り欠いて示す右側面図である。図６は図５（ｂ）の主要部を拡大して示す右側面図である。   For example, an electric blower used for air conditioning equipment generally includes a casing that houses an impeller and an electric motor that rotates the impeller (see, for example, Patent Document 1). An example of a conventional electric blower will be described with reference to the drawings. 5A and 5B are diagrams showing a conventional electric blower, where FIG. 5A is a front view, and FIG. 5B is a right side view of the lower half of the electric blower shown in FIG. FIG. FIG. 6 is an enlarged right side view of the main part of FIG.

電動機１は、回転軸１ａを突出させた側において、取付板２を介してケーシング３が取り付けられている。ケーシング３は、軸方向の一端側に吸込口３ａが形成され、周方向の一部に吐出口３ｂが形成された渦巻き状をなし、内部に羽根車４が収納されている。羽根車４は円盤状の側面板４ａの片側に、複数個のブレード４ｂを周方向に間隔をおいて取り付けて構成されており、電動機１の回転軸１ａに円筒状のファンボス５を介して連結されている。そして回転軸１ａが回転することによって羽根車４が回転し、ケーシング３の吸込口３ａから気体を吸込み、吐出口３ｂから排出するように作用する。   As for the electric motor 1, the casing 3 is attached through the attachment plate 2 in the side which made the rotating shaft 1a protrude. The casing 3 has a spiral shape in which a suction port 3a is formed on one end side in the axial direction and a discharge port 3b is formed in a part of the circumferential direction, and the impeller 4 is accommodated therein. The impeller 4 is configured by attaching a plurality of blades 4b to one side of a disk-shaped side plate 4a at intervals in the circumferential direction, and a rotating shaft 1a of the electric motor 1 via a cylindrical fan boss 5. It is connected. When the rotating shaft 1a rotates, the impeller 4 rotates, and acts so that gas is sucked from the suction port 3a of the casing 3 and discharged from the discharge port 3b.

ケーシング３の取付板２には、ドーナッツ盤状のブラシシール６が径方向に延びるように取り付けられている。ブラシシール６は、ナイロン系樹脂、プラスチックやゴム、金属などで形成され、その自由端となっている先端部側（内周側）が柔軟性を有するように多数の線状体に形成されたブラシ状に構成されており、その先端部側がファンボス５の外周面に接触するように配設されてブラシシール６の内外を遮蔽し、ケーシング３内の気体中に存在する油分などが電動機１側へ漏れ出るのを防止するようになっている。
特開平６−１９３５８７号公報 A donut disc-like brush seal 6 is attached to the attachment plate 2 of the casing 3 so as to extend in the radial direction. The brush seal 6 is made of nylon resin, plastic, rubber, metal or the like, and is formed in a number of linear bodies so that the free end of the tip (inner peripheral side) is flexible. It is configured in a brush shape, and is disposed so that the tip end side thereof is in contact with the outer peripheral surface of the fan boss 5 so as to shield the inside and outside of the brush seal 6. It is designed to prevent leakage to the side.
Japanese Patent Laid-Open No. 6-193588

ところで、上記の構造を有する電動送風機は、取付板２の側面に電動機１を取り付けるとともにその内周縁にブラシシール６を取り付け、その後、羽根車４を取り付けたファンボス５を電動機１の回転軸１ａに嵌合し、最後にこれらをケーシング３に取り付けて組み立てている。ここで、羽根車４を取り付けたファンボス５を電動機１の回転軸１ａに嵌合する際には、ファンボス５を加熱し膨張させて嵌め込む作業を行なっている。このためファンボス５が高温に加熱された際に、その被加熱部に近いファンボス５とブラシシール６との接触部にも熱が伝達されることになり、これがブラシシール６の先端部を熱的に劣化させて本来のシール性能を低下させるという問題があった。   By the way, the electric blower having the above-described structure attaches the electric motor 1 to the side surface of the mounting plate 2 and attaches the brush seal 6 to the inner peripheral edge thereof, and then attaches the fan boss 5 attached with the impeller 4 to the rotating shaft 1a of the electric motor 1. And finally attached to the casing 3 for assembly. Here, when the fan boss 5 to which the impeller 4 is attached is fitted to the rotating shaft 1a of the electric motor 1, the fan boss 5 is heated, expanded, and fitted. For this reason, when the fan boss 5 is heated to a high temperature, heat is also transmitted to the contact portion between the fan boss 5 and the brush seal 6 near the heated portion. There has been a problem that the original sealing performance is deteriorated due to thermal deterioration.

本発明は上記事情に鑑みてなされたもので、その目的とするところは、ブラシシールがファンボス嵌合時の熱的な影響を受け難くなり、ケーシング内からの油漏れ防止効果を損なうことのない電動送風機を提供することにある。   The present invention has been made in view of the above circumstances, and the purpose of the present invention is to make the brush seal less susceptible to thermal influence when the fan boss is fitted, impairing the effect of preventing oil leakage from within the casing. There is no electric blower to provide.

上記の課題を解決するため、本発明による電動送風機は、電動機と、この電動機の回転軸に加熱膨張により嵌めこむファンボスを有する羽根車を収納し、吸込口および吐出口を備えたケーシングと、前記ケーシングを前記電動機に取り付ける取付板と、前記取付板に設けられるブラシシールとを具備する電動送風機において、
前記羽根車を構成する側面板に軸方向に延びる円筒状の突出部を設け、前記取付板に径方向に延びるようにドーナツ盤状のブラシシールを設け、このブラシシールの内周側先端部を、前記羽根車を構成する側面板に設けた突出部の外周面に接触するように配置したことを特徴とする。 In order to solve the above problems, an electric blower according to the present invention accommodates an electric motor and an impeller having a fan boss that is fitted into the rotating shaft of the electric motor by heating and expansion, and a casing having a suction port and a discharge port, In the electric blower comprising an attachment plate for attaching the casing to the electric motor, and a brush seal provided on the attachment plate,
A cylindrical projection extending in the axial direction is provided on the side plate constituting the impeller, and a donut disk-like brush seal is provided on the mounting plate so as to extend in the radial direction. , And arranged so as to contact the outer peripheral surface of the protruding portion provided on the side plate constituting the impeller .

本発明によれば、ブラシシールがファンボスから離れて位置するので、ファンボスの嵌合時の熱的な影響を受け難くなり、熱的に劣化することがなくなるので、油漏れ防止効果を損なうことがない。  According to the present invention, since the brush seal is located away from the fan boss, it is less susceptible to thermal influences when the fan boss is fitted and is not thermally deteriorated, thereby impairing the oil leakage prevention effect. There is nothing.

図１（ａ）および（ｂ）は、本発明の第１実施の形態にかかる電動送風機を示す図で、（ａ）は正面図、（ｂ）は（ａ）に示す電動送風機の下半分の一部を切り欠いて示す右側面図である。図２は図１（ｂ）の主要部を拡大して示す右側面図である。   1A and 1B are views showing an electric blower according to a first embodiment of the present invention, where FIG. 1A is a front view, and FIG. 1B is a lower half of the electric blower shown in FIG. It is a right view which cuts and shows a part. FIG. 2 is an enlarged right side view of the main part of FIG.

図１および図２において、電動機１には、取付板２を介してケーシング３が取り付けられており、このケーシング３は、軸方向の一端側に吸込口３ａが形成され、周方向の一部に吐出口３ｂが形成された渦巻き状をなし、内部に羽根車４が収納されている。羽根車４は、円盤状の側面板４ａの片面に、多数のブレード４ｂを周方向に間隔をおいて取り付けて構成されており、円盤状の中心部に設けた円筒状のファンボス５を介して電動機１の回転軸１ａに嵌合して連結される。この羽根車４は、回転軸１ａが回転することによって回転してケーシング３の吸込口３ａから気体を吸込み、吐出口３ｂから排出するように作用する。   1 and 2, a casing 3 is attached to the electric motor 1 via a mounting plate 2, and the casing 3 is formed with a suction port 3 a on one end side in the axial direction and partially in the circumferential direction. The discharge port 3b is formed in a spiral shape, and the impeller 4 is accommodated therein. The impeller 4 is configured by attaching a large number of blades 4b to one side of a disk-shaped side plate 4a at intervals in the circumferential direction, and via a cylindrical fan boss 5 provided at the center of the disk. Are connected to the rotating shaft 1 a of the electric motor 1. The impeller 4 rotates as the rotary shaft 1a rotates, and acts to suck in gas from the suction port 3a of the casing 3 and discharge it from the discharge port 3b.

羽根車４の一部を構成する側面板４ａには、ブレード４ｂを取り付けた側と反対側の面に、軸方向に延びる円筒状の突出部４ｃが形成されており、この突出部４ｃの外周面に接触するようにブラシシール６が設けられている。すなわち、取付板２の内周部には、ドーナッツ盤状のブラシシール６が径方向に延びるように取り付けられており、その自由端となっている柔軟な先端部側（内周側）が側面板４ａに設けた突出部４ｃの外周面に接触するように配設されてケーシング３内からの油漏れを防止するようになっている。   A side surface plate 4a constituting a part of the impeller 4 is formed with a cylindrical projecting portion 4c extending in the axial direction on the surface opposite to the side on which the blade 4b is attached, and the outer periphery of the projecting portion 4c. A brush seal 6 is provided so as to contact the surface. That is, a donut disc-like brush seal 6 is attached to the inner peripheral portion of the mounting plate 2 so as to extend in the radial direction, and the flexible distal end side (inner peripheral side) which is the free end is on the side. It arrange | positions so that the outer peripheral surface of the protrusion part 4c provided in the face plate 4a may be contacted, and the oil leak from the inside of the casing 3 is prevented.

本実施の形態によれば、ブラシシール６の先端部と円筒状の突出部４ｃとの接触部は、ファンボス５の被加熱部から十分に離れて位置するため、ブラシシール６はファンボス５嵌合時の熱的な影響を受け難くなり、熱的に劣化して油漏れ防止効果を損なうようなことがなくなる。   According to the present embodiment, the contact portion between the tip end portion of the brush seal 6 and the cylindrical protruding portion 4 c is located sufficiently away from the heated portion of the fan boss 5. It becomes difficult to be affected by heat at the time of fitting, and there is no possibility that the oil leakage prevention effect is impaired due to thermal deterioration.

図３（ａ）および（ｂ）は、本発明の第２実施の形態にかかる電動送風機を示す図で、（ａ）は正面図、（ｂ）は（ａ）に示す電動送風機の下半分の一部を切り欠いて示す右側面図である。図４は図３（ｂ）の主要部を拡大して示す右側面図である。   FIGS. 3A and 3B are views showing an electric blower according to a second embodiment of the present invention, in which FIG. 3A is a front view, and FIG. 3B is a lower half of the electric blower shown in FIG. It is a right view which cuts and shows a part. FIG. 4 is an enlarged right side view showing the main part of FIG.

図３および図４において、本実施の形態においては、取付板２にはブラシシール６が軸方向に延びるように設けられており、自由端である柔軟な先端部側（図示左側）が羽根車４の側面板４ａの、ブレード４ｂが取り付けられている側と反対側の面に接触するように設けられており、ブラシシール６の先端部と羽根車４の一部を構成する側面板４ａとの接触部でケーシング３内からの油漏れを防止するようにしている。   3 and 4, in the present embodiment, the mounting plate 2 is provided with a brush seal 6 extending in the axial direction, and the flexible distal end side (the left side in the figure) which is a free end is an impeller. 4 is provided so as to come into contact with the surface of the side plate 4a opposite to the side on which the blade 4b is attached, and the side plate 4a constituting the tip of the brush seal 6 and a part of the impeller 4; The oil leakage from the casing 3 is prevented at the contact portion.

本実施の形態によっても第１の実施の形態と同様の効果を得ることができるほか、側面板４ａに突出部４ｃを形成する必要がないので、側面板４ａの構成を簡素化することができる。   According to the present embodiment, the same effect as that of the first embodiment can be obtained, and the configuration of the side plate 4a can be simplified because it is not necessary to form the protruding portion 4c on the side plate 4a. .

（ａ）および（ｂ）は本発明の第１実施の形態にかかる電動送風機を示す図で、（ａ）は正面図、（ｂ）は（ａ）に示す電動送風機の下半分の一部を切り欠いて示す右側面図である。(A) And (b) is a figure which shows the electric blower concerning 1st Embodiment of this invention, (a) is a front view, (b) is a part of lower half of the electric blower shown to (a). It is a right view which cuts and shows. 図１（ｂ）の主要部を拡大して示す右側面図である。It is a right view which expands and shows the principal part of FIG.1 (b). （ａ）および（ｂ）は、本発明の第２実施の形態にかかる電動送風機を示す図で、（ａ）は正面図、（ｂ）は（ａ）に示す電動送風機の下半分の一部を切り欠いて示す右側面図である。(A) And (b) is a figure which shows the electric blower concerning 2nd Embodiment of this invention, (a) is a front view, (b) is a part of lower half of the electric blower shown to (a) It is a right view which cuts and shows. 図３（ｂ）の主要部を拡大して示す右側面図である。It is a right view which expands and shows the principal part of FIG.3 (b). （ａ）および（ｂ）は、従来の電動送風機を示す図で、（ａ）は正面図、（ｂ）は（ａ）に示す電動送風機の下半分の一部を切り欠いて示す右側面図である。(A) And (b) is a figure which shows the conventional electric blower, (a) is a front view, (b) is a right view which cuts off and shows a part of lower half of the electric blower shown to (a) It is. 図５（ｂ）の主要部を拡大して示す右側面図である。It is a right view which expands and shows the principal part of FIG.5 (b).

符号の説明Explanation of symbols

１…電動機
１ａ…回転軸
２…取付板
３…ケーシング
３ａ…吸込口
３ｂ…吐出口
４…羽根車
４ａ…側面板
４ｂ…ブレード
４ｃ…突出部
５…ファンボス
６…ブラシシール DESCRIPTION OF SYMBOLS 1 ... Electric motor 1a ... Rotating shaft 2 ... Mounting plate 3 ... Casing 3a ... Suction port 3b ... Discharge port 4 ... Impeller 4a ... Side plate 4b ... Blade 4c ... Projection part 5 ... Fan boss 6 ... Brush seal

Claims (1)

電動機と、この電動機の回転軸に加熱膨張により嵌めこむファンボスを有する羽根車を収納し、吸込口および吐出口を備えたケーシングと、前記ケーシングを前記電動機に取り付ける取付板と、前記取付板に設けられるブラシシールとを具備する電動送風機において、
前記羽根車を構成する側面板に軸方向に延びる円筒状の突出部を設け、前記取付板に径方向に延びるようにドーナツ盤状のブラシシールを設け、このブラシシールの内周側先端部を、前記羽根車を構成する側面板に設けた突出部の外周面に接触するように配置したことを特徴とする電動送風機。 An electric motor, an impeller having a fan boss that is fitted into the rotating shaft of the electric motor by heating expansion, is accommodated, a casing having a suction port and a discharge port, a mounting plate for mounting the casing on the motor, and a mounting plate In the electric blower comprising the brush seal provided,
A cylindrical projection extending in the axial direction is provided on the side plate constituting the impeller, and a donut disk-like brush seal is provided on the mounting plate so as to extend in the radial direction. The electric blower is arranged so as to be in contact with the outer peripheral surface of the protrusion provided on the side plate constituting the impeller .
JP2005124687A 2005-04-22 2005-04-22 Electric blower Active JP4941855B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108457910A (en) * 2018-03-07 2018-08-28 湖北嘉辐达节能科技有限公司 A kind of centrifugal blower being conveniently replaceable flabellum

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CN100434722C (en) * 2007-03-22 2008-11-19 西安交通大学 Self-adaptive contacting inlet seal of centrifugal fan impeller

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108457910A (en) * 2018-03-07 2018-08-28 湖北嘉辐达节能科技有限公司 A kind of centrifugal blower being conveniently replaceable flabellum

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