JP2002084712A - Totally-enclosed fan-shaped rotating machine - Google Patents
Totally-enclosed fan-shaped rotating machineInfo
- Publication number
- JP2002084712A JP2002084712A JP2000267010A JP2000267010A JP2002084712A JP 2002084712 A JP2002084712 A JP 2002084712A JP 2000267010 A JP2000267010 A JP 2000267010A JP 2000267010 A JP2000267010 A JP 2000267010A JP 2002084712 A JP2002084712 A JP 2002084712A
- Authority
- JP
- Japan
- Prior art keywords
- fan
- rotating machine
- cooling
- fan cover
- totally
- 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
Links
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、冷却風をモータ
フレームの外被に送風する冷却用外部ファンと、該冷却
用外部ファンを保護するファンカバーとを有する全閉外
扇形回転機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully-closed external fan-type rotary machine having a cooling external fan for blowing cooling air to a jacket of a motor frame, and a fan cover for protecting the cooling external fan.
【０００２】[0002]
【従来の技術】図２は従来例の構成図を示す。この図２
において、ファンカバー１は冷却風吸込口２の開口部
と、非吸気部３ａと、非吸気部３ｂとで構成されてい
る。またＯは図示されていない回転機の回転中心であ
る。図において、ファンカバー１は図示されていない外
扇を間に挟んでこれまた図示されていない回転機の端部
を覆うように取付けられており、前記外扇により冷却風
吸込口２の開口部から吸込まれた冷却風は回転機の外周
に沿って送風され回転機を冷却する。2. Description of the Related Art FIG. 2 shows a configuration diagram of a conventional example. This figure 2
, The fan cover 1 includes an opening of the cooling air suction port 2, a non-suction part 3a, and a non-suction part 3b. O is a rotation center of a rotating machine not shown. In the drawing, a fan cover 1 is attached so as to cover an end of a rotating machine (not shown) with an outer fan (not shown) interposed therebetween, and the opening of the cooling air suction port 2 is formed by the outer fan. The cooling air sucked from the fan is sent along the outer periphery of the rotating machine to cool the rotating machine.
【０００３】[0003]
【発明が解決しようとする課題】ところで従来の構成で
は、回転中心から任意の方位における吸込みは、非吸気
部３ｂが存在する部分でその通風抵抗の影響により吸気
が不均一となり風圧差を生じる。その結果、第３図のよ
うな音源４，５が生じ、通風騒音増太の原因となる。By the way, in the conventional configuration, when the air is sucked in an arbitrary direction from the rotation center, the air intake becomes non-uniform at the portion where the non-air intake portion 3b exists, and the air pressure becomes different due to the influence of the ventilation resistance. As a result, sound sources 4 and 5 as shown in FIG. 3 are generated, which causes an increase in ventilation noise.
【０００４】この発明は上記課題を解決するためになさ
れたもので、その目的とするところは、冷却用外部ファ
ンを有する全閉外扇形回転機のファンカバーの冷却風吸
気口での通風騒音を低減した全閉外扇形回転機を提供す
ることにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to reduce ventilation noise at a cooling air intake port of a fan cover of a fully-closed external fan-type rotary machine having an external cooling fan. To provide a fully enclosed outer fan rotating machine.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に請求項１記載の発明は、冷却用外部ファンを有する全
閉外扇形回転機において、回転中心からファンカバーの
外周に至るまでの冷却風吸気口の開口部の合計長さが全
方位に渡って略一定になるようにしたことを特徴とす
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a fully-closed external fan-type rotating machine having a cooling external fan, wherein cooling air from a rotation center to an outer periphery of a fan cover is provided. It is characterized in that the total length of the openings of the intake ports is made substantially constant in all directions.
【０００６】上記構成により、回転中心からファンカバ
ー外周までの間で、回転中心を中心とした全方位におい
て、略均一に冷却風を吸込むようにすることで、回転中
心から各方位における合計吸込量の格差を小さくする事
ができ、その結果風圧差が低減できるため、通風騒音を
低減することが可能になる。また人体及び固形異物等を
ファンなどの回転物体から保護するためにはファンカバ
ーの吸気風穴の個々の開口面積を小さくする必要がある
が、逆に回転機を冷却するためにはより多くの冷却風を
吸込む事ができるように吸気風穴の総開口面積を多くと
る必要がある。本発明はファンカバーの吸気風穴の個々
の開口面積を最小にし、かつ総開口面積を多くとる事が
できるので、より多くの吸気を均ーに吸込む事も可能で
ある。With the above-described structure, the cooling air is substantially uniformly sucked in all directions around the rotation center from the rotation center to the outer periphery of the fan cover, so that the total suction amount in each direction from the rotation center is reduced. Since the disparity can be reduced, and as a result, the wind pressure difference can be reduced, the ventilation noise can be reduced. Also, in order to protect the human body and solid foreign objects from rotating objects such as fans, it is necessary to reduce the individual opening areas of the intake air holes of the fan cover. Conversely, more cooling is required to cool the rotating machine. It is necessary to increase the total opening area of the intake air hole so that the wind can be sucked. The present invention can minimize the individual opening area of the intake air holes of the fan cover and increase the total opening area, so that more intake air can be evenly sucked.
【０００７】[0007]
【発明の実施の形態】図１はこの発明の実施の形態の主
要部の構成図を示す。この図１において、従来例と同一
の符号を付けた部材はおおよそ同一の機能を有するので
その説明は省略する。この図１において、６はファンカ
バーであり、このファンカバ―６には冷却風吸込口７が
同心円状で略等間隔に設けられ、回転中心から各方位で
の開口部と非開口部の面積比がどの方位でも略均一にな
るように非吸気部８が設けられている。これらは図でみ
ると、回転中心ＯからＡＯ，ＢＯ，ＣＯの各開口部と非
閉口部の面積比が略均一になっていることが判る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a configuration diagram of a main part of an embodiment of the present invention. In FIG. 1, members denoted by the same reference numerals as those of the conventional example have approximately the same functions, and therefore description thereof will be omitted. In FIG. 1, reference numeral 6 denotes a fan cover. The fan cover 6 has cooling air suction ports 7 provided concentrically at substantially equal intervals, and has an area ratio between an opening and a non-opening in each direction from the rotation center. However, the non-suction portion 8 is provided so as to be substantially uniform in any direction. From these figures, it can be seen that the area ratios of the openings and the non-closed portions of AO, BO and CO from the rotation center O are substantially uniform.
【０００８】この構造によって各閉口部から均一に冷却
風を吸込むことができるため、従来技術のファンカバー
構造に発生していた図３のような不均一な音圧分布が低
減でき、通風騒音を低減する事ができる。また図２と図
１とを比較しても判るように図１の方が冷却風吸込口６
の総間口面積を多くとることができるので、より多くの
吸気ができる。With this structure, since the cooling air can be uniformly sucked from each closed portion, the uneven sound pressure distribution as shown in FIG. 3 which occurs in the conventional fan cover structure can be reduced, and the ventilation noise can be reduced. Can be reduced. As can be seen by comparing FIG. 2 with FIG. 1, the cooling air suction port 6 in FIG.
Since the total frontage area can be increased, more air can be taken.
【０００９】[0009]
【発明の効果】この発明によれば、冷却用外部ファンを
有する全開外扇形回転機のファンカバー構造において、
略均一な吸気構造をとることができ、冷却風を均一に吸
込み、騒音を低減する効果がある。また、冷却風吸込口
の総間口面積を多くとることができるので、より多くの
吸気ができる。According to the present invention, in a fan cover structure of a full-open external fan type rotating machine having an external fan for cooling,
A substantially uniform air intake structure can be obtained, and the cooling air can be sucked in uniformly to reduce noise. Further, since the total frontage area of the cooling air inlet can be increased, more air can be taken.
【図１】この発明の実施の形態の主要部分の構成図FIG. 1 is a configuration diagram of a main part of an embodiment of the present invention.
【図２】従来例の構成図FIG. 2 is a configuration diagram of a conventional example.
【図３】ファンカバーの音圧分布図FIG. 3 is a sound pressure distribution diagram of a fan cover.
６ ファンカバー ７ 冷却風吸気口 ８ 非吸気部 6 Fan cover 7 Cooling air intake port 8 Non-intake section
Claims (1)
機において、回転中心からファンカバーの外周に至るま
での冷却風吸気口の開口部の合計長さが全方位に渡って
略一定になるようにしたことを特徴とする全閉外扇形回
転機。In a fully enclosed external fan type rotating machine having an external cooling fan, the total length of the opening of the cooling air intake from the center of rotation to the outer periphery of the fan cover is substantially constant in all directions. A fully enclosed fan-shaped rotary machine characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000267010A JP2002084712A (en) | 2000-09-04 | 2000-09-04 | Totally-enclosed fan-shaped rotating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000267010A JP2002084712A (en) | 2000-09-04 | 2000-09-04 | Totally-enclosed fan-shaped rotating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002084712A true JP2002084712A (en) | 2002-03-22 |
Family
ID=18753998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000267010A Pending JP2002084712A (en) | 2000-09-04 | 2000-09-04 | Totally-enclosed fan-shaped rotating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002084712A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102548348A (en) * | 2010-12-28 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Heat abstractor |
-
2000
- 2000-09-04 JP JP2000267010A patent/JP2002084712A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102548348A (en) * | 2010-12-28 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Heat abstractor |
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