JPH0286998A

JPH0286998A - Blower

Info

Publication number: JPH0286998A
Application number: JP23777988A
Authority: JP
Inventors: Yukio Shinoda; 幸雄篠田; Kazuhiro Yasumoto; 和弘安本; Ippei Hagiwara; 一平萩原; Koji Toda; 戸田　宏二
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1988-09-22
Filing date: 1988-09-22
Publication date: 1990-03-27

Abstract

PURPOSE:To secure such a blower that is low in a temperature rise, high in strength of a blade and excellent in reliability and service life by installing each recess part in open ends of a boss part of the blade at the blade side, while setting up an end of the blade in a projection being formed between these recess parts. CONSTITUTION:When air is inhaled from a base block 1 on one side and sent to it on the other, air lying between a stator 4 and the sticking surface 8c of a turning shaft 7 of a boss part 8 is stirred by a stirring rib 14 and thereby heat exchange being produced by the stator 4 is made so better. The air raised in temperature by the heat exchange is entered in a vent passage 13 from a clearance of a base 12, and then it is discharged to the outside of a blade 8 from a recess 15 at an end of the boss part 8a. On the other hand, from the outside of the blade 8, it is inhaled in the boss part 8a from a clearance between the stator 4 and a rotor magnet 10 as cooling the stator 4. At this time, since the recess 15 is installed and an open area is large enough, a cooling effect becomes enlarged. In addition, since an end of a blade 8b is set up so as to become a projection 16, strength is also enhanced.

Description

【発明の詳細な説明】〔産業上の利用分野〕この発明は電子機器等に冷却用として使用される送風機
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a blower used for cooling electronic equipment and the like.

[Conventional technology]

第７図は例えば実開昭６２−１７３５９５号公報に示さ
れた従来の送風機を示す断面図であり、図において（１
）はケーシングを成す基台で、中央部にホルダ（２）が
設けられている。（３）はこのホルダに嵌着されたボー
ルベアリングから成る軸受、（４）は上記ホルダ（２）
の外周側壁に設けられたステータコア（５）とこのコア
に巻回されたコイル（６）とから成るステータ、（７）
は上記軸受（３）に嵌合し回動可能に設けられた回転軸
、（８）はこの回転軸に固着され上記ステータｆ４］を
覆うようにその開放端を同一面にして形成されたボス部
（８ａ）を設けるとともに、外周側に翼（８ｂ）を設け
た羽根で、合成樹脂で成形されている。（９）は上記ボ
ス部（８ａ）の上記ステータ（４）との対向面に設けら
れたロータヨーク、（１０）はこのロータヨークに設け
られ上記ステータ（４）と対向するロータマグネットで
ある。FIG. 7 is a sectional view showing a conventional blower disclosed in, for example, Japanese Utility Model Application Publication No. 62-173595.
) is a base forming a casing, and a holder (2) is provided in the center. (3) is a bearing consisting of a ball bearing fitted into this holder, (4) is the above holder (2)
A stator (7) consisting of a stator core (5) provided on the outer peripheral side wall of the stator and a coil (6) wound around this core.
(8) is a rotary shaft that fits into the bearing (3) and is rotatably provided, and (8) is a boss that is fixed to this rotary shaft and whose open end is flush with the stator f4 so as to cover the stator f4. The blade has a portion (8a) and a wing (8b) on the outer peripheral side, and is molded from synthetic resin. (9) is a rotor yoke provided on the surface of the boss portion (8a) facing the stator (4), and (10) is a rotor magnet provided on the rotor yoke and facing the stator (4).

従来の送風機は上記のように構成され、ステータ（４）
のコイル（６）に通電することにより、磁界が発生し、
ロータマグネット００）との磁気作用により羽根（８）
は回転軸（刀を中心に回転して送風するようになってい
る。A conventional blower is configured as described above, with a stator (4)
By energizing the coil (6), a magnetic field is generated,
Due to the magnetic action with the rotor magnet 00), the blades (8)
It rotates around the rotating shaft (sword) to blow air.

[Problem to be solved by the invention]

上記のような従来の送風機では、ロータマグネットα０
）とステータ（４）との隙間は効率の点からできるだけ
小さく形成され、またボス部（８ａ）の開放端が同一面
に形成されているため、ステータ（４）のホス部（８ｂ
）内で発生する熱の放出は少なく、このため温度上昇が
高く、信頼性、寿命が劣るという課題があった。In the conventional blower as mentioned above, the rotor magnet α0
) and the stator (4) is formed as small as possible from the viewpoint of efficiency, and since the open ends of the boss portion (8a) are formed on the same plane, the gap between the host portion (8b) of the stator (4)
), the amount of heat generated within them is small, resulting in a high temperature rise, resulting in poor reliability and service life.

この発明は係る課題を解決するためになされたちのて、
温度上昇が低く、また、羽根翼の強度が高く、信頼性、
寿命の高い送風機を得ることを目的とするものである。This invention was made to solve the problem,
Low temperature rise, high blade strength, reliability,
The purpose is to obtain a blower with a long life.

[Means to solve the problem]

この発明に係る送風機は、羽根のボス部の開放端に羽根
の翼側にくぼむ凹部を設けたものである。In the blower according to the present invention, a concave portion recessed toward the blade side of the blade is provided at the open end of the boss portion of the blade.

また、翼の端部を凹部間に形成される凸部に配設したも
のである。Further, the end portions of the blades are disposed in the convex portions formed between the concave portions.

[Effect]

この発明においては、羽根のボス部の開放端に羽根の翼
側にくぼむ凹部か設けられているから、ボス部内の熱が
放出されやずく、また、ステータ側に冷却用空気が入り
やすくなり、温度上昇が低く押さえられる。In this invention, since the open end of the boss portion of the blade is provided with a recess that is recessed toward the blade side of the blade, the heat in the boss portion can be released easily, and cooling air can easily enter the stator side. , temperature rise can be kept low.

また、翼の端部を凹部間に形成される凸部に配設したか
ら、翼を長くすることが可能となり、強度も高くできる
。Furthermore, since the end portions of the blades are disposed on the convex portions formed between the concave portions, the blades can be made longer and their strength can be increased.

〔Example〕

第１図この発明の一実施例を示す断面図、第２図は同し
く羽根のボス部の半分を示す斜視図、第３図は同しくボ
ス部を示す正面図、第４図は同しく羽根の側面図であり
、（１）〜θＯ）は上記従来例と同一または相当部分を
示し、（１１）はボス部（８ａ）の内面にボス部（８ａ
）と一体成形によりステータ（４）側に回転軸（７）中
心に対し放射状に複数突出したボスリブ、（１２）はこ
のボスリブに直線的に連設されボスリブの下部に突設さ
れた台座で、この台座の上面と上記ボスリブの先端に断
面り字状でリング状に形成したロータヨーク（９）が設
けられ、ロータヨーク（９）とボス部（８ａ）内周側壁
との間には台座（１２）端部からボスリブ（１１）端部
に至る通気路（１３）が形成される。（１４）はこの台
座の下部に連設され、上記ボスリブ（１１）と上記台座
（１２）とは所定角度を有し、ボス部（８ａ）の回転軸
（ト）固着面（８ｃ）に突出して設けられたかく拌リブ
、（１４）は上記ボス部（８ａ）基台（１）側である開
放端に上記羽根（８）の翼（８ｂ）側にくぼんだ凹部、
（１５）はこの凹部間に形成される凸部で、翼（８ｂ）
の端部はこの凸部になるよう配設されている。Fig. 1 is a sectional view showing one embodiment of the present invention, Fig. 2 is a perspective view showing half of the boss portion of the blade, Fig. 3 is a front view showing the boss portion, and Fig. 4 is the same. It is a side view of the blade, (1) to θO) show the same or equivalent parts as the above conventional example, and (11) shows a boss part (8a) on the inner surface of the boss part (8a).
) and a plurality of boss ribs protruding radially from the center of the rotating shaft (7) on the stator (4) side by integral molding, (12) is a pedestal that is linearly connected to this boss rib and protrudes from the lower part of the boss rib, A rotor yoke (9) formed in a ring shape with a cross section is provided on the upper surface of the pedestal and the tip of the boss rib, and a pedestal (12) is provided between the rotor yoke (9) and the inner peripheral side wall of the boss portion (8a). A ventilation path (13) is formed from the end to the end of the boss rib (11). (14) is connected to the lower part of this pedestal, the boss rib (11) and the pedestal (12) have a predetermined angle, and the boss rib (11) and the pedestal (12) protrude from the rotation axis (g) fixing surface (8c) of the boss part (8a). an agitation rib (14) provided at the open end of the boss portion (8a) on the base (1) side;
(15) is a convex portion formed between the concave portions, and the wing (8b)
The end portion of is arranged to form this convex portion.

上記のように構成された送風機においては、従来例と同
様に羽根は回転し、基台（１）の一方から吸気し、他方
へ送風する。このとき、ステータ（イ）とボス部の回転
軸（７）固着面（８ｃ）との間の空気は、かく拌リブ（
１４）によりかく拌されてステータ（４で発生する熱交
換を良好にし、熱交換によって温度上昇した空気は破線
矢印のように台座（１２）間から通気路（１３）内に入
り、ボス部（８ａ）端部の凹部（１５）がら羽根（８）
外に放出される。一方、羽根（８）外からは、ステータ
（４）とロータマグネット００）との隙間からステータ
（イ）を冷却しながらボス部（８ａ）内に吸気される。In the blower configured as described above, the blades rotate as in the conventional example, sucking air from one side of the base (1) and blowing air to the other side. At this time, the air between the stator (a) and the fixing surface (8c) of the rotating shaft (7) of the boss part is removed from the stirring rib (
The air that is stirred by the stator (14) to improve the heat exchange generated by the stator (4), and whose temperature has increased due to the heat exchange, enters the air passage (13) from between the pedestals (12) as shown by the broken line arrow, and passes through the boss (14). 8a) End recess (15) rattle (8)
released outside. On the other hand, air is drawn from outside the blade (8) into the boss portion (8a) through the gap between the stator (4) and the rotor magnet 00) while cooling the stator (A).

このとき、かく拌リブ（１４）、台座（１２）、ボスリ
ブ（１１）は送風羽根の機能を有し、送風量が多くなり
、凹部（１５）が設けられ開放面積が大きいことからス
テータ（４）内への吸気量、通気路（１３）から外部へ
の吹出し量が多く冷却効果が大きくなる。また、翼（８
ｂ）の端部が凸部（１６）になるよう配設されているこ
とから、翼（８ｂ）を長くすることができ、多くの風量
が得られるとともに、強度も高くなる。At this time, the stirring rib (14), the pedestal (12), and the boss rib (11) have the function of blowing blades, and the amount of air blown is large. ), and the amount of air blown out from the air passage (13) to the outside is large, increasing the cooling effect. Also, wings (8
Since the end portion of b) is disposed so as to form a convex portion (16), the blade (8b) can be lengthened, a large amount of air can be obtained, and the strength can be increased.

このように、ステータ（４）を冷却することによりステ
ータ（４）の温度上昇は低く押さえられ、信頼性および
寿命が向上する。By cooling the stator (4) in this manner, the temperature rise of the stator (4) is suppressed to a low level, improving reliability and service life.

なお、上記実施例ではかく拌リブ（１４）および台座（
１２）を設けているが、これがなくても目的は達成され
る。In addition, in the above embodiment, the stirring rib (14) and the pedestal (
12), but the purpose can be achieved even without it.

また、ボスリブ（１１）と台座（１２）およびかく拌リ
ブ（１４）の形状、角度等は上記実施例に限られず、第
５図に示すようにボスリブ（１１）、台座（１２）、か
く拌リブ（１４）の全てが、回転軸（′７１中心から放
射状になるよう形成してもよい。In addition, the shapes, angles, etc. of the boss rib (11), the pedestal (12), and the stirring rib (14) are not limited to those in the above embodiment, and as shown in FIG. All of the ribs (14) may be formed radially from the center of the rotation axis ('71).

さらに、ボスリブ（１１）のみを回転軸（７１中心から
放射状に形成し、台座（１２）とかく拌リブ（１４）を
直線的に形成し、上記ボスリブ（１１）と所定の角度を
有して設けてもよく、また、台座（１２）のみを回転軸
（７１中心から放射状に形成し、ボスリブ（１１）とか
く拌リブ（１４）を上記台座（１２）に対して所定の角
度を有して設けてもよい。Furthermore, only the boss rib (11) is formed radially from the center of the rotation axis (71), and the pedestal (12) and stirring rib (14) are formed linearly and are provided at a predetermined angle with the boss rib (11). Alternatively, only the pedestal (12) may be formed radially from the center of the rotating shaft (71), and the boss ribs (11) and stirring ribs (14) may be provided at a predetermined angle with respect to the pedestal (12). It's okay.

そしてまた、かく拌リブ（１４）のみを回転軸（７）中
心から放射状に形成し、ボスリブ（１１）と台座（１２
）を直線的に形成し、上記かく拌リブ（１４）と所定の
角度を有して設けてもよい。Also, only the stirring ribs (14) are formed radially from the center of the rotating shaft (7), and the boss ribs (11) and the pedestal (12) are formed radially from the center of the rotating shaft (7).
) may be formed linearly and provided at a predetermined angle with the stirring rib (14).

さらにまた、台座（１２）とかく拌リブ（１４）を直線
的に回転軸（７）中心から放射状に形成し、ボスリブ（
１１）をこの台座（１２）に対して所定の角度を有して
形成してもよい。Furthermore, the pedestal (12) and stirring ribs (14) are formed linearly radially from the center of the rotating shaft (7), and the boss ribs (
11) may be formed at a predetermined angle with respect to the base (12).

また、ボスリブ（１１）と台座（１２）およびかく拌リ
ブ（１４）の全てが回転軸（７）中心に対し所定の角度
を有して形成してもよい。Further, the boss rib (11), the pedestal (12), and the stirring rib (14) may all be formed at a predetermined angle with respect to the center of the rotating shaft (7).

さらに、第６図に示すようにボスリブ（１１）と台座（
１２）およびかく拌リブ（１４）は連設されることなく
、それぞれに設けてもよい。Furthermore, as shown in Fig. 6, the boss rib (11) and the pedestal (
12) and the stirring rib (14) may be provided separately without being provided in succession.

また、上記のそれぞれにおける角度、形状等はこれに限
られず羽根（８）の回転方向、回転数等に応して設定す
ればよい。Further, the angles, shapes, etc. in each of the above are not limited to these, and may be set according to the rotation direction, rotation speed, etc. of the blade (8).

〔Effect of the invention〕

この発明は以上説明したように構成されていることから
、特に羽根ボス部で覆われるステータ部に多くの冷却空
気を流すことができ、従って、温度上昇を低く押さえ、
信頼性、寿命が向上する。Since the present invention is configured as described above, a large amount of cooling air can flow especially to the stator section covered with the vane boss section, and therefore, temperature rise can be kept low.
Improved reliability and service life.

また、翼が長く形成でき多くの風量が得られるとともに
、羽根翼の強度が高くなる効果がある。In addition, the blades can be formed long and a large amount of air can be obtained, and the strength of the blades can be increased.

[Brief explanation of the drawing]

第１図はこの発明の一実施例を示す断面図、第２図は同
じく羽根（８）のボス部（８ａ）の半分を示す斜視図、
第３図は同じくボス部（８ａ）を示す正面図、第４図は
同しく羽根（８）の側面図、第５図はこの発明の他の実
施例を示す羽根（８）ボス部（８ａ）の正面図、第６図
はこの発明のさらに他の実施例を示す羽根（８）ボス部
（８ａ）の正面図、第７図は従来の送風機を示す断面図
である。なお、各図中同一符号は同一または相当部分を示し、（
２１はホルダ、（３）は軸受、（４はステータ、（７１
は回転軸、（８）は羽根、（８ａ）はボス、（８ｃ）は
固着面、（９）はロータヨーク、α０）はロータマグネ
ット、（１１）はボスリブ、（１２）は台座、（１３）
通気路、（１４）はかく拌リブ、（１５）は凹部、（１
６）は凸部である。第１図FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing half of the boss portion (8a) of the blade (8).
FIG. 3 is a front view showing the boss portion (8a), FIG. 4 is a side view of the blade (8), and FIG. 5 is a front view of the blade (8) showing another embodiment of the invention. ), FIG. 6 is a front view of the vane (8) and boss portion (8a) showing still another embodiment of the present invention, and FIG. 7 is a sectional view showing a conventional blower. In addition, the same reference numerals in each figure indicate the same or equivalent parts.
21 is a holder, (3) is a bearing, (4 is a stator, (71)
is the rotating shaft, (8) is the blade, (8a) is the boss, (8c) is the fixed surface, (9) is the rotor yoke, α0) is the rotor magnet, (11) is the boss rib, (12) is the pedestal, (13)
Ventilation passage, (14) stirring rib, (15) recess, (1
6) is a convex portion. Figure 1

Claims

[Claims]

(1) A holder, a bearing fitted in this holder, a stator provided in the holder, a rotating shaft fitted in the bearing and rotatably provided, and a circumferential side fixed to this rotating shaft. a blade having a boss portion formed to cover the stator; a rotor yoke provided on a surface of the boss portion facing the stator; and a rotor magnet provided on the rotor yoke and facing the stator. A blower comprising: a concave portion recessed toward the blade side of the blade at the open end of the boss portion of the blade.

(2) The blower according to claim 1, wherein the end portion of the blade is disposed in a convex portion formed between the concave portions.