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JP2006299985A - Motor driven blower - Google Patents

Motor driven blower Download PDF

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Publication number
JP2006299985A
JP2006299985A JP2005124687A JP2005124687A JP2006299985A JP 2006299985 A JP2006299985 A JP 2006299985A JP 2005124687 A JP2005124687 A JP 2005124687A JP 2005124687 A JP2005124687 A JP 2005124687A JP 2006299985 A JP2006299985 A JP 2006299985A
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Japan
Prior art keywords
impeller
brush seal
fan boss
casing
electric blower
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JP2005124687A
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Japanese (ja)
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JP4941855B2 (en
Inventor
Toshiaki Komada
利昭 駒田
Katsuya Hasegawa
勝也 長谷川
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Nishishiba Electric Co Ltd
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Nishishiba Electric Co Ltd
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Priority to JP2005124687A priority Critical patent/JP4941855B2/en
Publication of JP2006299985A publication Critical patent/JP2006299985A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor driven blower with a brush seal hard to be thermally influenced when fitted to a fan boss without impairing the effect of preventing the leakage of oil from a casing. <P>SOLUTION: An impeller 4 is connected to a rotating shaft 1a of a motor 1 via the fan boss 5. The impeller 4 is covered with the casing 3. The casing 3 has an air inlet 4a and an air outlet 4b, and it is mounted on the motor 1 via a mounting plate 2. The brush seal 6 is provided on the mounting plate 2. The brush seal 6 has a soft front end located far from the fan boss 5 so as to contact part of the impeller 4. As located far from the fan boss 5, it is hard to thermally influenced when fitted to the fan boss 5 and free of thermal deterioration. <P>COPYRIGHT: (C)2007,JPO&INPIT

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。   In the electric motor 1, a casing 3 is attached via a mounting plate 2 on the side where the rotating shaft 1 a is projected. 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 cylindrical fan boss 5 on a rotating shaft 1a of the electric motor 1. It is connected. The impeller 4 rotates as the rotating 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.

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 arranged so that the tip end side contacts the outer peripheral surface of the fan boss 5 to shield the inside and outside of the brush seal 6, and the oil or the like present in the gas in the casing 3 is the electric motor 1. 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ファンボスを介して連結された羽根車と、吸込口および吐出口を有し、羽根車を収納するとともに取付板を介して電動機に取り付けられたケーシングと、取付板に設けられ、ファンボスから離れた位置にある羽根車の一部に接触するブラシシールとを具備してなることを特徴とする。  In order to solve the above problems, an electric blower according to the present invention has an electric motor, an impeller coupled to a rotating shaft of the electric motor via a fan boss, a suction port, and a discharge port, and stores the impeller. And a casing attached to the motor via the attachment plate, and a brush seal provided on the attachment plate and contacting a part of the impeller at a position away from the fan boss.

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 surface 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. Then, it is fitted and connected to the rotating shaft 1a 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 is less likely to be affected by heat at the time of fitting, and it is no longer deteriorated thermally and impairs the oil leakage prevention effect.

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 (3)

電動機と、この電動機の回転軸にファンボスを介して連結された羽根車と、吸込口および吐出口を有し、前記羽根車を収納するとともに取付板を介して前記電動機に取り付けられたケーシングと、前記取付板に設けられ、前記ファンボスから離れた位置にあり前記羽根車の一部に接触するブラシシールとを具備してなる電動送風機。  An electric motor, an impeller coupled to the rotating shaft of the electric motor via a fan boss, a casing having a suction port and a discharge port, housing the impeller and attached to the electric motor via a mounting plate; An electric blower comprising a brush seal provided on the mounting plate and located at a position away from the fan boss and in contact with a part of the impeller. 前記羽根車を構成する側面板に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ブラシシールを設け、このブラシシールの先端部を、前記羽根車を構成する側面板の突出部に接触するように配設したことを特徴とする請求項1に記載の電動送風機。   A cylindrical protrusion is provided on the side plate constituting the impeller, and a brush seal is provided on the mounting plate so as to extend in a radial direction. The tip of the brush seal is projected from the side plate constituting the impeller. The electric blower according to claim 1, wherein the electric blower is disposed so as to contact the portion. 前記取付板に軸方向に延びるようにブラシシールを設け、このブラシシールの先端部を、前記羽根車を構成する側面板に接触するように配設したことを特徴とする請求項1に記載の電動送風機。   2. A brush seal is provided on the mounting plate so as to extend in an axial direction, and a tip end portion of the brush seal is disposed so as to come into contact with a side plate constituting the impeller. Electric blower.
JP2005124687A 2005-04-22 2005-04-22 Electric blower Active JP4941855B2 (en)

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JP4941855B2 JP4941855B2 (en) 2012-05-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100434722C (en) * 2007-03-22 2008-11-19 西安交通大学 Self-adaptive contacting inlet seal of centrifugal fan impeller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108457910B (en) * 2018-03-07 2020-11-17 湖北嘉辐达节能科技股份有限公司 Centrifugal fan convenient to change flabellum

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Publication number Priority date Publication date Assignee Title
JPS59139597A (en) * 1982-09-02 1984-08-10 ノ−ス・アメリカン・フイリップス・ライテイング・コ−ポレ−シヨン Operating device for minimizing lamp voltage variation of high intensity sodium lamp
JPS63160395A (en) * 1986-12-24 1988-07-04 沖電気工業株式会社 Method of mounting flat-package ic
JPH03117601A (en) * 1989-07-12 1991-05-20 Union Carbide Ind Gases Technol Corp Turbo apparatus with seal fluid-recovering channel
JPH0763193A (en) * 1993-08-23 1995-03-07 Ishikawajima Harima Heavy Ind Co Ltd Impeller installation structure for centrifugal type low temperature compressor
JPH08326685A (en) * 1995-06-05 1996-12-10 Tec Corp Motor-driven blower
JPH09273564A (en) * 1996-04-03 1997-10-21 Ishikawajima Harima Heavy Ind Co Ltd Fastening structure of impeller

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139597A (en) * 1982-09-02 1984-08-10 ノ−ス・アメリカン・フイリップス・ライテイング・コ−ポレ−シヨン Operating device for minimizing lamp voltage variation of high intensity sodium lamp
JPS63160395A (en) * 1986-12-24 1988-07-04 沖電気工業株式会社 Method of mounting flat-package ic
JPH03117601A (en) * 1989-07-12 1991-05-20 Union Carbide Ind Gases Technol Corp Turbo apparatus with seal fluid-recovering channel
JPH0763193A (en) * 1993-08-23 1995-03-07 Ishikawajima Harima Heavy Ind Co Ltd Impeller installation structure for centrifugal type low temperature compressor
JPH08326685A (en) * 1995-06-05 1996-12-10 Tec Corp Motor-driven blower
JPH09273564A (en) * 1996-04-03 1997-10-21 Ishikawajima Harima Heavy Ind Co Ltd Fastening structure of impeller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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