JPH0914195A - Motor-driven blower - Google Patents

Motor-driven blower

Info

Publication number
JPH0914195A
JPH0914195A JP16176795A JP16176795A JPH0914195A JP H0914195 A JPH0914195 A JP H0914195A JP 16176795 A JP16176795 A JP 16176795A JP 16176795 A JP16176795 A JP 16176795A JP H0914195 A JPH0914195 A JP H0914195A
Authority
JP
Japan
Prior art keywords
housing
end bracket
motor
electric blower
air guide
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
Application number
JP16176795A
Other languages
Japanese (ja)
Inventor
Hisanori Toyoshima
久則 豊島
Fumio Joraku
文夫 常楽
Seiji Iizuka
政二 飯塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP16176795A priority Critical patent/JPH0914195A/en
Publication of JPH0914195A publication Critical patent/JPH0914195A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To suppress turbulence of a flow and to improve blast performance by a method wherein a bearing fixing part is arranged at the central part of an end bracket, a plurality of arm parts securely attached on the end face on the opening side of a housing are provided, and an air guide part to intercouple arm parts is formed on the outer peripheral side. CONSTITUTION: The motor of an electric cleaner is a rectifier type electric motor, a rotor 3 and a stator 4 are contained in a housing 1 and an end bracket 2, and a rotary shaft 7 is extended through the end bracket 2. A diffuser 8 is arranged on the end bracket 2 and a centrifugal impeller 9 is fixed on the rotary shaft 7. The end bracket 2 is provided at a central part with a bearing fixing part 30, arm parts 23 and 23 fixed in the housing 1 are provided, and an air guide part 22 to intercouple the arm parts 23 and 23 is arranged with a gap 24 between the outer peripheral part thereof and the housing 1. This constitution prevents the occurrence of turbulence, such as peel, due to a curve of an air flow and introduces air in the housing 1 with high efficiency.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は電動送風機に関する。FIELD OF THE INVENTION The present invention relates to an electric blower.

【0002】[0002]

【従来の技術】従来、電動送風機の送風性能の向上とし
て、特にディフューザからモータ内へ流れ込みの損失低
減方法には、特開平6−257598 号公報に記載されるよう
に、ハウジングのR面取部に放射状に複数個の凹部状の
通風路を設けて空気の乱れを低減し送風性能を向上させ
る構造が紹介されている。
2. Description of the Related Art Conventionally, as a method for improving the blowing performance of an electric blower, in particular, as a method of reducing the loss of flow into a motor from a diffuser, as disclosed in Japanese Patent Laid-Open No. 6-257598, an R chamfered portion of a housing is disclosed. A structure has been introduced in which a plurality of concave ventilation paths are radially provided to reduce air turbulence and improve air blowing performance.

【0003】[0003]

【発明が解決しようとする課題】この従来例で、ハウジ
ングの円筒部の外側に張り出す平面部から円筒部に向か
ってのR面取部に放射状に複数個の凹部状の通風路を設
けて乱流を低減させる構造となっているが、凹部状通風
路が部分的に設けられているので、全体の流れに影響す
ることなく通気損失効果が得られないことや、逆に凹部
状の通風路に渦が発生して乱流を増大させ送風性能を低
下させる恐れがあった。
In this conventional example, a plurality of air passages having a concave shape are provided radially in the R chamfered portion extending from the flat surface portion protruding outside the cylindrical portion of the housing toward the cylindrical portion. Although it has a structure that reduces turbulence, it does not have the effect of ventilation loss without affecting the overall flow because the concave ventilation passage is partially provided. There was a risk that vortices would be generated in the passages, increasing turbulence and degrading blowing performance.

【0004】本発明では、確実に送風性能の向上をはか
ることを目的とする。
An object of the present invention is to surely improve the blowing performance.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
に、本発明の特徴とするところはハウジングの開口側端
面に固定されるエンドブラケットの腕部どうしを結ぶエ
アガイド部を設けて、その内側に風取り入れの孔部を形
成させることにある。
In order to achieve the above object, a feature of the present invention is to provide an air guide portion for connecting the arms of the end bracket fixed to the end face on the opening side of the housing. This is to form a hole for taking in the wind inside.

【0006】また、エアガイド部はハウジング端面部と
の間に隙間を有して配設され、さらにエアガイド部の対
向するハウジング端面部には凹部を設けている。又、ハ
ウジング内で固定子の外径は略長方形をなし各辺はハウ
ジング内周面との間にモータ内に空気流路を形成し、空
気流路に対向させて凹部を設けている。
Further, the air guide portion is disposed with a gap between it and the housing end surface portion, and a recess is provided in the housing end surface portion facing the air guide portion. In addition, the outer diameter of the stator is substantially rectangular in the housing, and each side has an air flow path formed in the motor between itself and the inner circumferential surface of the housing, and a recess is provided facing the air flow path.

【0007】[0007]

【作用】エンドブラケットの腕部と腕部を結ぶエアガイ
ド部はハウジングとの間に隙間を有しているために、羽
根車からディフューザを通って流れてきた空気流は、ハ
ウジング端面上から円筒部、すなわち、モータ内へ略直
角方向に曲がって流れ込む。従って、その曲がりによる
流れの剥離現象や、モータ内空気流路への流れ込み部の
衝突による流れの乱れ等が発生して送風性能の低下を引
き起こす原因となるが、本発明によれば、曲がり部でハ
ウジング端面と離れて配置されるエアガイドが曲がり部
の流れの剥離を抑えて、流れの乱れを低減できる。この
エアガイドの効果により対向位置のハウジング端面上に
凹部を設ければ、渦の発生を防ぎ効率よく凹部内へも気
流を流すことが可能となり、すなわち、実効流路断面積
を増やすことができ更に通気抵抗を減少させ送風性能を
向上させることができる。この凹部とモータ内空気流路
を対向させることにより、より送風性能を向上できる。
また、エアガイドの角度の調整により、流れの方向を調
節することが可能であり、例えば、前述のように流れを
モータ内流路へ集中させることや、流れを固定子あるい
は回転子のコイルへ集めて冷却性能を高めることができ
る。
[Function] Since the air guide portion connecting the arms of the end bracket has a gap between the housing and the housing, the air flow from the impeller through the diffuser is cylindrical from the end surface of the housing. A portion, that is, a portion that is bent into the motor at a substantially right angle and flows. Therefore, a flow separation phenomenon due to the bend and a turbulence of the flow due to the collision of the flow-in portion with the air flow path in the motor occur, which causes a decrease in the blowing performance, but according to the present invention, the bend portion Thus, the air guide arranged apart from the housing end face can suppress the separation of the flow in the bent portion, and can reduce the flow turbulence. If a recess is provided on the end face of the housing at the opposed position by the effect of this air guide, it is possible to prevent the generation of vortices and allow the airflow to flow efficiently into the recess, that is, to increase the effective flow passage cross-sectional area. Further, the ventilation resistance can be reduced and the blowing performance can be improved. The air blowing performance can be further improved by making the concave portion and the motor internal air flow path face each other.
In addition, it is possible to adjust the flow direction by adjusting the angle of the air guide. For example, as described above, the flow is concentrated in the motor internal flow path, or the flow is applied to the stator or rotor coil. It can be collected to improve cooling performance.

【0008】ハウジングの端面上には羽根車からディフ
ューザを通って流れてきた空気を流す流路が構成される
が、当然、流路断面積が大きい方が抵抗が少なく特性は
良くなる。従って凹部を設けて流路面積をなるべく大き
くすることは乱流を低減し、さらに凹部をモータ内流路
に対向させて設けることは、より送風性能を向上するこ
とが可能となる。
A flow path is formed on the end surface of the housing for flowing the air flowing from the impeller through the diffuser. Naturally, the larger the flow path cross-sectional area, the lower the resistance and the better the characteristics. Therefore, providing a concave portion to increase the flow passage area as much as possible reduces turbulence, and providing the concave portion so as to face the motor internal flow passage can further improve the blowing performance.

【0009】[0009]

【実施例】以下、本発明の一実施例を図1より説明す
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

【0010】図1は電気掃除機に用いられる本発明の一
実施例の電動送風機の断面図である。使用されているモ
ータは整流形電動機で、ハウジング1とエンドブラケッ
ト2内に回転子3及び固定子4が収納されている。回転
子3は軸受5,6により支持され、回転軸7はエンドブ
ラケット2を貫通して延びている。エンドブラケット2
上にディフューザ8を固定配置し、その上に遠心羽根車
9が回転軸7にねじ10によって一体固定されている。
さらにそれらを覆ってケーシング11がエンドブラケッ
ト2外周と圧入固定され、ディフューザ8を挾持固定し
ている。回転子3は、両端軸受5,6の間に整流子12
及び鉄心13が配置固定され、鉄心13には巻線14が
巻回されていて、整流子12の外周の整流子片15に電
気的に接続されている。ハウジング1の円筒部19上に
ねじ止め固定されているブラシ保持器16に収納される
カーボンブラシ17がブラシ保持器16内でばね等に付
勢されて整流子12の外周面に当接し、電気的に接続さ
れている。エンドブラケット2は、中央部に軸受固定部
30を有しハウジング1に取付固定される腕部23を設
け、腕部23と腕部23を結ぶエアガイド部22は複数
個有し外周部22はハウジング1と隙間24を有して配
置される。ここで空気の流れはハウジング1の端面上か
ら円筒部19内へ略直角に曲がって流れ込むが、エアガ
イド22によって、曲がりによる流れの剥離等の乱れを
防ぎ、効率良く空気をハウジング1円筒部19内へ導く
ことができる。またエアガイド22の角度によっては、
空気の流れを回転子3又は固定子コイル26に向けるこ
ともでき、冷却効果が向上する。
FIG. 1 is a sectional view of an electric blower according to an embodiment of the present invention used in an electric vacuum cleaner. The motor used is a rectification type electric motor, and a rotor 3 and a stator 4 are housed in a housing 1 and an end bracket 2. The rotor 3 is supported by bearings 5 and 6, and the rotating shaft 7 extends through the end bracket 2. End bracket 2
A diffuser 8 is fixedly arranged on the upper side, and a centrifugal impeller 9 is integrally fixed on the rotary shaft 7 by a screw 10 on the diffuser 8.
Furthermore, the casing 11 is press-fitted and fixed to the outer periphery of the end bracket 2 so as to cover them, and the diffuser 8 is held and fixed. The rotor 3 has a commutator 12 between the bearings 5 and 6 at both ends.
Further, the iron core 13 is arranged and fixed, and the winding 14 is wound around the iron core 13 and electrically connected to the commutator piece 15 on the outer periphery of the commutator 12. The carbon brush 17 housed in the brush holder 16 which is screwed and fixed onto the cylindrical portion 19 of the housing 1 is urged by a spring or the like in the brush holder 16 to come into contact with the outer peripheral surface of the commutator 12 to generate electric power. Connected to each other. The end bracket 2 is provided with a bearing fixing portion 30 at a central portion thereof and an arm portion 23 which is attached and fixed to the housing 1. The arm portion 23 and a plurality of air guide portions 22 connecting the arm portions 23 are provided and the outer peripheral portion 22 is It is arranged with the housing 1 and a gap 24. Here, the air flow bends from the end face of the housing 1 into the cylindrical portion 19 at a substantially right angle, but the air guide 22 prevents turbulence such as separation of the flow due to the bending, and efficiently blows the air into the cylindrical portion 19 of the housing 1. Can be guided inside. Also, depending on the angle of the air guide 22,
The air flow can be directed to the rotor 3 or the stator coil 26, and the cooling effect is improved.

【0011】図2は本発明の一実施例の電動送風機の断
面図である。ハウジング1の端面上18から円筒部19
にかけてエンドブラケット2の腕部23に対向しない場
所、すなわち、エアガイド部22の対向部に複数個の凹
部21を設けている。更にエンドブラケット2のエアガ
イド部22はハウジング1の凹部21と離れて配置され
ており、空気の流れの一部は隙間24を通るようになる
ため、流路断面積を大きく増やすことができ、ここでの
通気損失を低減でき、送風性能が向上されるので、高出
力の電動送風機を提供することができる。図3はエンド
ブラケット2の平面図である。エンドブラケット2には
空気取り入れ用孔20が設けられている。本図ではエア
ガイド部22が2個の場合を表している。図4はハウジ
ング1の平面図である。エンドブラケット2の外周部2
2の傾斜に合わせて凹部21が少なくとも複数個設けら
れている。
FIG. 2 is a sectional view of an electric blower according to an embodiment of the present invention. From the end surface 18 of the housing 1 to the cylindrical portion 19
A plurality of recesses 21 are provided at a position not facing the arm portion 23 of the end bracket 2, that is, at a facing portion of the air guide portion 22. Further, the air guide portion 22 of the end bracket 2 is arranged apart from the recess 21 of the housing 1, and a part of the air flow passes through the gap 24, so that the flow passage cross-sectional area can be greatly increased. Since the ventilation loss here can be reduced and the blowing performance is improved, it is possible to provide a high-power electric blower. FIG. 3 is a plan view of the end bracket 2. The end bracket 2 is provided with an air intake hole 20. This figure shows a case where there are two air guide portions 22. FIG. 4 is a plan view of the housing 1. Outer peripheral portion 2 of the end bracket 2
At least a plurality of recesses 21 are provided according to the inclination of 2.

【0012】図5は本発明の一実施例の電動送風機の部
分断面図である。ハウジング1の端面18上にはエンド
ブラケット2の取付面29以外の部分を少なくとも複数
個の凹部27が設けてあり、ハウジング1の端面18上
に形成される流路断面積を増やして通気抵抗を低減し送
風性能を向上させ、送風性能を向上することができる。
図6はハウジング1の平面図である。エンドブラケット
2の取付面29近く以外は少なくとも複数個の凹部27
となっている。図7は電動送風機の部分平面図である。
ハウジング1と固定子4との間に空気流路32が形成さ
れている。この空気流路32に対向してエンドブラケッ
ト2に凹部27が形成されており、空気の流れをスムー
ズにして送風性能及び冷却性能を向上することができ
る。図8は従来の電動送風機の部分断面図である。図9
は従来のエンドブラケットの平面図である。
FIG. 5 is a partial sectional view of an electric blower according to an embodiment of the present invention. At least a plurality of recesses 27 are provided on the end surface 18 of the housing 1 except for the mounting surface 29 of the end bracket 2, and the flow passage cross-sectional area formed on the end surface 18 of the housing 1 is increased to increase ventilation resistance. It is possible to reduce the air flow and improve the air blowing performance and improve the air blowing performance.
FIG. 6 is a plan view of the housing 1. At least a plurality of recesses 27 except near the mounting surface 29 of the end bracket 2.
It has become. FIG. 7 is a partial plan view of the electric blower.
An air flow path 32 is formed between the housing 1 and the stator 4. A recess 27 is formed in the end bracket 2 so as to face the air flow path 32, so that the air flow can be made smooth and the air blowing performance and the cooling performance can be improved. FIG. 8 is a partial sectional view of a conventional electric blower. FIG.
FIG. 6 is a plan view of a conventional end bracket.

【0013】[0013]

【発明の効果】本発明によれば、エアガイド部22によ
って、ハウジング1端面18上から円筒部、すなわち、
モータ内へ略直角方向に曲がって流れ込む際の流れの剥
離現象や、モータ内空気流路への流れ込み部の衝突によ
る流れの乱れ等を抑えて、流れの乱れを低減できる。ま
た、このエアガイド部22の効果により対向位置のハウ
ジング1端面18上に凹部21を設ければ、渦の発生を
防ぎ効率よく凹部21内へも気流を流すことが可能とな
り、実効流路断面積を増やすことができるため通気抵抗
を減少させ送風性能を向上させることができる。さらに
凹部21とモータ内空気流路を対向させることにより、
より送風性能を向上できる。また、エアガイド部22の
角度の調整により、流れの方向を調節することが可能で
あり、例えば、前述のように、流れをモータ内流路へ集
中させることや、流れを固定子4あるいは回転子3のコ
イルへ集めて冷却性能を高めることができる。
According to the present invention, by the air guide portion 22, the cylindrical portion, that is,
The flow turbulence can be reduced by suppressing the flow separation phenomenon when flowing into the motor in a substantially right-angled direction and the flow turbulence due to the collision of the inflow part with the motor internal air flow path. Further, by providing the recess 21 on the end surface 18 of the housing 1 at the opposing position by the effect of the air guide portion 22, it becomes possible to prevent the generation of a vortex and efficiently allow the airflow to flow into the recess 21 as well. Since the area can be increased, the ventilation resistance can be reduced and the blowing performance can be improved. Furthermore, by making the concave portion 21 and the air passage in the motor face each other,
Blower performance can be improved. Further, the direction of the flow can be adjusted by adjusting the angle of the air guide portion 22. For example, as described above, the flow can be concentrated in the motor internal flow path, or the flow can be adjusted to the stator 4 or the rotation. It can be collected in the coil of the child 3 to enhance the cooling performance.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例の電動送風機の断面図。FIG. 1 is a sectional view of an electric blower according to an embodiment of the present invention.

【図2】本発明の第二実施例の電動送風機の断面図。FIG. 2 is a sectional view of an electric blower according to a second embodiment of the present invention.

【図3】本発明の一実施例のエンドブラケットの平面
図。
FIG. 3 is a plan view of an end bracket according to an embodiment of the present invention.

【図4】本発明の第二実施例のハウジングの平面図。FIG. 4 is a plan view of the housing according to the second embodiment of the present invention.

【図5】本発明の第三実施例の電動送風機の断面図。FIG. 5 is a sectional view of an electric blower according to a third embodiment of the present invention.

【図6】本発明の第三実施例ののハウジングの正面図。FIG. 6 is a front view of the housing of the third embodiment of the present invention.

【図7】本発明の第四実施例の電動送風機の部分平面
図。
FIG. 7 is a partial plan view of an electric blower according to a fourth embodiment of the present invention.

【図8】従来の電動送風機の部分断面図。FIG. 8 is a partial cross-sectional view of a conventional electric blower.

【図9】従来のエンドブラケットの平面図。FIG. 9 is a plan view of a conventional end bracket.

【符号の説明】[Explanation of symbols]

1…ハウジング、2…エンドブラケット、3…回転子、
5,6…軸受、7…回転軸、8…ディフューザ、9…羽
根車、10…ねじ、11…ケーシング、12…整流子、
13…鉄心、14…巻線、15…整流子片、16…ブラ
シ保持器、17…カーボンブラシ、19…円筒部、22
…エアガイド部、23…腕部、24…隙間、25…固定
子コア、26…固定子コイル、30…軸受固定部。
1 ... Housing, 2 ... End bracket, 3 ... Rotor,
5, 6 ... Bearing, 7 ... Rotating shaft, 8 ... Diffuser, 9 ... Impeller, 10 ... Screw, 11 ... Casing, 12 ... Commutator,
13 ... Iron core, 14 ... Winding, 15 ... Commutator piece, 16 ... Brush holder, 17 ... Carbon brush, 19 ... Cylindrical part, 22
... Air guide part, 23 ... Arm part, 24 ... Gap, 25 ... Stator core, 26 ... Stator coil, 30 ... Bearing fixing part.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 飯塚 政二 茨城県日立市東多賀町一丁目1番1号 日 立多賀エンジニアリング株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaji Iizuka 1-1-1 Higashitaga-cho, Hitachi-shi, Ibaraki Hitate Taga Engineering Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】一端面側が開口した円筒状のハウジング内
に回転子及び固定子を収納し、前記端面上にエンドブラ
ケットを配設固定したモータと、前記エンドブラケット
を貫通した回転軸に取付固定された羽根車、その外周側
にディフューザを配置し、更にそれらを覆うケーシング
を有し、前記羽根車からの吐出気流を前記エンドブラケ
ットの孔部から前記ハウジング内を通して前記モータを
冷却する電動送風機において、前記エンドブラケットは
中央部に軸受固定部を有し、前記ハウジングの開口側端
面に取付固定される腕部を複数個設け、外周側において
前記腕部と前記腕部を結ぶエアガイド部を有して、前記
軸受固定部の外縁,腕部の側縁及びエアガイド部によっ
て前記孔部を形成し、前記エアガイド部と前記ハウジン
グの開口側側面との間に隙間を有して配設したことを特
徴とする電動送風機。
1. A motor in which a rotor and a stator are housed in a cylindrical housing having one end face opened, and an end bracket is disposed and fixed on the end face, and a rotary shaft penetrating the end bracket is fixedly attached. In an electric blower for cooling the motor by passing the discharge airflow from the impeller through the hole of the end bracket through the housing, and the diffuser is disposed on the outer peripheral side of the impeller. The end bracket has a bearing fixing portion in the central portion, a plurality of arm portions mounted and fixed to the opening side end surface of the housing, and an air guide portion connecting the arm portions to each other on the outer peripheral side. Then, the hole portion is formed by the outer edge of the bearing fixing portion, the side edge of the arm portion and the air guide portion, and the air guide portion and the opening side surface of the housing are formed. An electric blower, characterized in that arranged with a gap between.
【請求項2】請求項1において、前記エンドブラケット
の前記エアガイド部に対向する前記ハウジングの開口側
端面あるいは開口側端面から円筒部分にかけて、凹部を
設けた電動送風機。
2. The electric blower according to claim 1, wherein a concave portion is provided on the opening side end surface of the housing facing the air guide portion of the end bracket or a concave portion extending from the opening side end surface to a cylindrical portion.
【請求項3】一端面側が開口した円筒状のハウジング内
に回転子および固定子を収納し、前記端面上にエンドブ
ラケットを配設固定したモータと、前記エンドブラケッ
トを貫通した回転軸に取付固定された羽根車、その外周
側にディフューザを配置し、更にそれらを覆うケーシン
グを有し、前記羽根車からの吐出気流を前記ハウジング
内を通して前記モータを冷却する電動送風機において、
前記ハウジングの端面上、前記エンドブラケットの固定
部よりも、低く形成された凹部を複数個所設けたことを
特徴とする電動送風機。
3. A motor having a rotor and a stator housed in a cylindrical housing having one end face opened, and an end bracket disposed and fixed on the end face, and a rotary shaft penetrating the end bracket. In an electric blower that arranges a diffuser on the outer peripheral side of the impeller and a casing that covers them, and cools the motor by passing the discharge airflow from the impeller through the housing,
An electric blower having a plurality of recesses formed on the end surface of the housing so as to be lower than the fixed portion of the end bracket.
【請求項4】請求項3において、前記固定子の外径は略
長方形をなし各辺はハウジング内周面との間に前記モー
タ内に空気流路を形成し、前記空気流路に対向させて前
記凹部を設けた電動送風機。
4. The stator according to claim 3, wherein the outer diameter of the stator is substantially rectangular, and each side forms an air flow path in the motor between the inner peripheral surface of the housing and the air flow path. An electric blower provided with the recess.
JP16176795A 1995-06-28 1995-06-28 Motor-driven blower Pending JPH0914195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16176795A JPH0914195A (en) 1995-06-28 1995-06-28 Motor-driven blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16176795A JPH0914195A (en) 1995-06-28 1995-06-28 Motor-driven blower

Publications (1)

Publication Number Publication Date
JPH0914195A true JPH0914195A (en) 1997-01-14

Family

ID=15741519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16176795A Pending JPH0914195A (en) 1995-06-28 1995-06-28 Motor-driven blower

Country Status (1)

Country Link
JP (1) JPH0914195A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101113832B1 (en) * 2004-07-27 2012-02-29 삼성테크윈 주식회사 Turbo compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101113832B1 (en) * 2004-07-27 2012-02-29 삼성테크윈 주식회사 Turbo compressor

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