JPS6210500A - Blower - Google Patents

Abstract

PURPOSE:To permit the blowing-out in the plural arbitrary directions by forming a swirl casing by superposing a plurality of swirls having different swirl-starting positions and discharge directions, in the direction of the rotary shaft of a vane wheel. CONSTITUTION:A swirl casing 2 has the discharge ports 3a and 3b in two directions, and swirls are superposed in the upper and lower layers of the swirl casing, shifted by 90 deg.. The air which flows-in from a suction port 4 is divided, at the position immediately after the discharge from a vane wheel, into the upper and lower layers of the swirl casing, and discharged in the separate directions. Therefore, blowing-out in the plural arbitrary directions, is permitted, and the air can be uniformly and easily discharged from each discharge port.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、空調機などに使用される遠心送風装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a centrifugal blower used in an air conditioner or the like.

従来の技術 従来のこの種の送風装置は第３図に示すように、羽根車
１と渦巻きケーシング２ａとモータ５とから構成されて
い１こ。渦巻きケーシングの一端面に吸気口４ａが形成
され、内部に遠心式の羽根車が収納されている。この羽
根車は禍巻きケーシングの外部Ｃζ設けられＴこモータ
に連動されて回転する構造となっている。BACKGROUND OF THE INVENTION A conventional blower device of this type is composed of an impeller 1, a spiral casing 2a, and a motor 5, as shown in FIG. An intake port 4a is formed on one end surface of the spiral casing, and a centrifugal impeller is housed inside. This impeller is provided outside the winding casing and rotates in conjunction with a T motor.

この構成によれば、羽根車の回転により吸気口から吸入
されｒこ空気は羽根車から周方向に吹出し、渦巻きケー
シングにより吐出口３ｃに集められ吐出される。According to this configuration, air is sucked in from the intake port by the rotation of the impeller, is blown out from the impeller in the circumferential direction, and is collected by the spiral casing at the discharge port 3c and discharged.

ま１こ、別の従来技術として、多方向への吹出しを可能
にし１こものがあり、第４図に示し１こように相反する
２方向に吐出口３ｄ、３０を形成しにケーシング２ｂや
第５図ａ、　　ｂに示し１こような両吸込み用の羽根車
ｌａ、ケーシング２ｃによる構成も利用されている。There is another conventional technology that allows air to be blown out in multiple directions, as shown in FIG. A structure including a dual-suction impeller la and a casing 2c as shown in FIGS. 5a and 5b is also used.

発明が解決しようとする問題点 しかしながら上記の基本構成では、吐出口が１つである
ため使用範囲が制約されるという欠点を有し、多方向吹
出しの構成のうち、相反する２方向に吐出口を設け１こ
ケーシングの場合には、１８０゜反対方向の吹出しでは
舌部の位置が羽根車中心に対して対称になり両吐出口へ
均等に送風されるが、９０°程度の角度で２万回に吐出
する場合や任意の複数の方向へ吐出する場合は舌部から
吐出口までのボリュート巻き角が各吐出口に対して一定
にならず、均等に多方向へ送風することが困難になる。Problems to be Solved by the Invention However, the above-mentioned basic configuration has the disadvantage that the scope of use is restricted because there is only one outlet. In the case of a single casing, the position of the tongue becomes symmetrical with respect to the center of the impeller when blowing in the opposite direction by 180 degrees, and the air is blown equally to both outlets, but at an angle of about 90 degrees, When discharging at once or in multiple arbitrary directions, the winding angle of the volute from the tongue to the discharge port is not constant for each discharge port, making it difficult to blow air evenly in multiple directions. .

ま１こ、両吸込みの構成では、吸気口を２カ所に設ける
必要があることや両吸込み用の羽根車が必要であるとい
う製作上の短所の他に、ベルマウス付近に生じる羽根効
率の悪い循環領域が羽根車の両端に生じることになり羽
根車全体の効率も低下するという欠点ヲ有していｒこ。In addition to the manufacturing disadvantages of the double suction configuration, such as the need to provide intake ports in two locations and the need for impellers for both suctions, there is also the problem of poor impeller efficiency near the bell mouth. This has the disadvantage that circulation regions are formed at both ends of the impeller, reducing the efficiency of the entire impeller.

問題点を解決する１こめの手段 上記問題点を解決する１こめに、本発明の送風装置にお
いては、羽根車を収納する渦巻きケーシングは、巻き始
め位置と吐出方向の異なる複数の渦巻きを羽根車の回転
軸方向に積み重ねて形成され、この中にモータと連動し
γこ遠心式の羽根車を収納する構成をとっている。First Means to Solve the Problems First, in the blower device of the present invention, the spiral casing housing the impeller has a plurality of spirals with different winding start positions and discharge directions. The impellers are stacked in the direction of the rotational axis, and a gamma centrifugal impeller that operates in conjunction with the motor is housed inside the impeller.

作　　用 本発明は上記のように、羽根車の回転軸方向に、巻き始
め位置をすらし１こ渦巻き全積み重ねｆコ構造のケーシ
ングを採用しているγこめに、各層毎に巻き始め位置と
吐出方向が異なっており、渦巻きケーシングのどのｉｔ
流れるかによって吐出方向が異なるので、１つのケーシ
ングで多方向への吹出しを実現することが出来る。As described above, the present invention has a winding start position and a winding start position for each layer in the direction of the rotational axis of the impeller, in which the casing has a single spiral, fully stacked f-co structure. The discharge direction is different, which of the spiral casing
Since the discharge direction differs depending on the flow, it is possible to realize discharge in multiple directions with one casing.

実施例 以下本発明の実施例全添付図面にもとづいて説明する。Example Embodiments of the present invention will be described below with reference to all the accompanying drawings.

第１図において、１は羽根車、２は渦巻きケーシングで
ある。この渦巻きケーシングは２方向への吐出口３ａ、
３ｂを持ち、渦巻きケーシングの上層と下層では渦巻き
が約９０°ずれて積み重ねられている。し１こがって、
吸気口４より流入した空気は羽根車を出γこところで渦
巻きケーシングの上層と下層に分けられ、別々の方向へ
吐出される。この構成では、積み重ねられｆこ渦巻き自
体の形状はほぼ同じであるからその性能は同じと考えら
れ、羽根高さ方向の吐出速度分布のみを考慮してやれば
再吐出口から均等に吐出することは容易である。In FIG. 1, 1 is an impeller and 2 is a spiral casing. This spiral casing has discharge ports 3a in two directions,
3b, and the spirals are stacked in the upper and lower layers of the spiral casing with an offset of about 90 degrees. I was angry,
The air flowing in from the intake port 4 exits the impeller and is divided into the upper layer and the lower layer of the spiral casing and discharged in different directions. In this configuration, since the shapes of the stacked spirals themselves are almost the same, their performance is considered to be the same, and if only the discharge velocity distribution in the blade height direction is considered, it is easy to discharge evenly from the re-discharge port. It is.

ま１こ、片吸込みであるｆこめ、羽根のベルマウス近傍
の循環領域は羽根車の片側だけ（こ生じ、羽根の両端に
循環領域の生じる両吸込み構成よりも高効率の送風機と
なる。However, since it is a single suction, the circulation area near the bell mouth of the blade is only on one side of the impeller (this results in a more efficient blower than a double suction configuration with circulation areas at both ends of the blade).

発明の効果 以上のようをこ本発明の送風装置によれば、任意の複数
方向への吹出しが可能であり、かつ、各吐出口から均等
に吐出することが容易であるという効果が得られる。Effects of the Invention As described above, according to the blowing device of the present invention, it is possible to blow air in any plurality of directions, and it is easy to blow air uniformly from each outlet.

ま１こ、片吸込みである１こめ、吸気口が一面だけで良
く、羽根車も両吸込み用の特殊なものでなくて良いとい
う利点の他に、ベルマウス近傍の循環領域が羽根車の一
端のみに生じ、循環領域が両端に生じる両吸込み構成に
比べると効率が良くなるという効果が得られる。In addition to the advantage that the single suction system only requires one intake port on one side and the impeller does not need to be a special type for both suctions, the circulation area near the bell mouth is located at one end of the impeller. The effect is that the efficiency is improved compared to a dual suction configuration in which circulation areas occur at both ends.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例における送風装置の斜視図、
第２図は同送風装置の縦断面図、第３図は従来のこの種
の送風装置の斜視図、第４図は他の従来例を示す送風装
置の斜視図、第５図ａはまγこ別の従来例金示す送風装
置の平面断面図、第５図すは同送風装置の縦断面図であ
る。 １・・・・・・羽根車、２・・・・・渦巻きケーシング
、３ａ。 ３ｂ・・・・・吐出口、４・・・・・・吸気口。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名４−
ｍ−吸気口 第２図 第３図 第４図 第５図　　　（（Ｌ） ２ｔ、 （ｂ）FIG. 1 is a perspective view of a blower device in an embodiment of the present invention;
Fig. 2 is a longitudinal sectional view of the same blower, Fig. 3 is a perspective view of a conventional blower of this kind, Fig. 4 is a perspective view of another conventional blower, Fig. 5 FIG. 5 is a plan sectional view of another conventional example of the blowing device, and FIG. 5 is a longitudinal sectional view of the same blowing device. 1... Impeller, 2... Spiral casing, 3a. 3b...Discharge port, 4...Intake port. Name of agent: Patent attorney Toshio Nakao and 1 other person 4-
m-Intake port Figure 2 Figure 3 Figure 4 Figure 5 ((L) 2t, (b)

Claims (1)

【特許請求の範囲】[Claims] 　遠心式の羽根車とこの羽根車を収納する渦巻きケーシ
ングを備え、前記渦巻きケーシングは、巻き始め位置と
吐出方向の異なる複数の渦巻きを羽根車の回転軸方向に
積み重ねて形成された送風装置。A blower device comprising a centrifugal impeller and a spiral casing that houses the impeller, the spiral casing being formed by stacking a plurality of spirals with different winding start positions and discharge directions in the direction of the rotation axis of the impeller.