JPH08252416A - Eliminator - Google Patents
EliminatorInfo
- Publication number
- JPH08252416A JPH08252416A JP8736395A JP8736395A JPH08252416A JP H08252416 A JPH08252416 A JP H08252416A JP 8736395 A JP8736395 A JP 8736395A JP 8736395 A JP8736395 A JP 8736395A JP H08252416 A JPH08252416 A JP H08252416A
- Authority
- JP
- Japan
- Prior art keywords
- louver
- gradient
- eliminator
- section
- louvers
- 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
- Separating Particles In Gases By Inertia (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、エリミネータに関し、
より詳細には、屋外設置の空気取入装置、ガスタービン
及び空気清浄装置などにおける吸気フィルタに雨水浸入
防止のために設けられるエリミネータに関する。FIELD OF THE INVENTION The present invention relates to an eliminator,
More specifically, the present invention relates to an eliminator provided in an intake filter of an outdoor air intake device, a gas turbine, an air cleaning device, or the like for preventing rainwater intrusion.
【0002】[0002]
【従来の技術】従来、吸気フィルタの雨水浸入防止のた
めに、波形状の板や、ジグザグ形状の板を一定間隔で多
数並べ、気流通路を構成したエリミネータが使用されて
いた。例えば、図5(A)及び(B)に示すような波形
状の板を配置したエリミネータ11が使用されていた。
図中、12はフレームであり、13はルーバーである。
しかしながら、エリミネータの水滴捕集効率が悪いとエ
リミネータの後方(下流)に雨水が貫通し、フィルタの
水ぬれによる性能低下などのトラブル発生の原因にもな
っていた。2. Description of the Related Art Conventionally, in order to prevent rainwater from entering an intake filter, an eliminator has been used in which a large number of corrugated plates or zigzag plates are arranged at regular intervals to form an air flow passage. For example, the eliminator 11 in which the corrugated plates as shown in FIGS. 5A and 5B are arranged is used.
In the figure, 12 is a frame and 13 is a louver.
However, if the water drop collecting efficiency of the eliminator is poor, rainwater penetrates to the rear (downstream) of the eliminator, causing troubles such as performance deterioration due to water wetting of the filter.
【0003】そこで水滴捕集効率を上げるため、エリミ
ネータの気流通路を構成する板の形状を変えたり、板の
表面に凹凸をつけたり、又水滴を衝突させ捕集するため
の邪魔板を板の中間に設けたりしていた。従来のエリミ
ネータのルーバー形状の例を図6(A)〜(C)に示
す。図6(A)は波形状ルーバー、図6(B)はジグザ
グ状ルーバー、図6(C)は邪魔板付きルーバーの横断
面形状を示す。Therefore, in order to improve the efficiency of collecting water droplets, the shape of the plate forming the air passage of the eliminator is changed, the surface of the plate is made uneven, and the baffle plate for colliding and collecting water drops is provided between the plates. It was set up in. An example of a conventional louver shape of an eliminator is shown in FIGS. 6 (A) shows a corrugated louver, FIG. 6 (B) shows a zigzag louver, and FIG. 6 (C) shows a cross-sectional shape of a louver with a baffle plate.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、上記し
た従来の技術では、水滴の捕集効率を上げることは出来
るが、エリミネータの圧力損失が増加してしまうので、
使用に限界があった。そこで本発明の目的は、水滴捕集
効果が大きく、且つ圧力損失が低いエリミネータを提供
することにある。However, although the above-mentioned conventional technique can increase the collection efficiency of water droplets, it causes the pressure loss of the eliminator to increase.
There was a limit to use. Therefore, an object of the present invention is to provide an eliminator having a large water drop collecting effect and a low pressure loss.
【0005】[0005]
【課題を解決するための手段】前記の課題を検討した結
果、圧力損失を低くするためには、エリミネータの気流
通路内の乱流発生を極小におさえると共に、気流の慣性
力を有効に利用して空気中の水滴を分離すればよいこと
がわかり、高い水滴捕集効率を保持しながら圧力損失を
低くすることのできる以下の構造のエリミネータを完成
するに至った。[Means for Solving the Problems] As a result of studying the above problems, in order to reduce the pressure loss, turbulence in the air passage of the eliminator is minimized and the inertial force of the air flow is effectively used. It was found that the water droplets in the air could be separated, and the eliminator having the following structure capable of reducing pressure loss while maintaining high water droplet collection efficiency was completed.
【0006】本発明のエリミネータは、前記目的を達成
すべく、気流方向に対して傾斜しかつ気流方向と直交す
る方向に互いに離間させて立設された多数の傾斜ルーバ
ーとこれらの傾斜ルーバーのそれぞれの板面に前縁を接
して一体としたくの字形横断面のルーバーとを有するエ
リミネータであって、前記傾斜ルーバーと前記くの字形
横断面のルーバーの前縁との接点の位置から前記傾斜ル
ーバーの前縁までの距離と前記接点の位置から前記傾斜
ルーバーの後縁までの距離との比が4対1から5対1ま
での間にあり、前記傾斜ルーバーとくの字形横断面のル
ーバーとの交叉角度が90゜から120゜までの範囲内
にあり、且つ前記傾斜ルーバーの間隔が気流通路の気流
方向全長を気流通路の気流方向変換数で除した値以下の
寸法であることを特徴とする。In order to achieve the above-mentioned object, the eliminator of the present invention has a large number of inclined louvers that are inclined with respect to the air flow direction and are spaced from each other in a direction orthogonal to the air flow direction, and each of these inclined louvers. An eliminator having a louver having a dogleg-shaped cross section integrated with its front edge in contact with the plate surface of the inclined louver from the position of the contact point between the inclined louver and the front edge of the louver having the dogleg cross section. The ratio between the distance to the front edge of the louver and the distance from the position of the contact point to the trailing edge of the slanted louver is between 4: 1 and 5: 1, and the slanted louver and the louver of V-shaped cross section are The crossing angle is in the range of 90 ° to 120 °, and the distance between the inclined louvers is less than or equal to the value obtained by dividing the total length of the airflow passage in the airflow direction by the number of airflow passage conversions. And butterflies.
【0007】前記傾斜ルーバーは、前縁の屈折された傾
斜ルーバーであってもよい。前記くの字形横断面のルー
バーは、気流入口側の端部が屈折されたルーバーであっ
てもい。また、前記傾斜ルーバーの前縁の屈折された長
さは、屈折部の先端と隣接の傾斜ルーバーの後縁とを結
んだ線が気流流れ方向と平行になるような長さであるこ
とが望ましい。The slanted louver may be a slanted louver with a bent front edge. The louver having the V-shaped cross section may be a louver whose end portion on the air flow inlet side is bent. Further, the bent length of the front edge of the inclined louver is preferably such that the line connecting the tip of the bending portion and the rear edge of the adjacent inclined louver is parallel to the air flow direction. .
【0008】[0008]
【作用】本発明では、前記したように、前端を縁折りし
たルーバーを多数枚、気流方向に対して傾斜して立設
し、板同志を一定の間隔で配置し、この傾斜ルーバーの
所定の位置にくの字形横断面のルーバーの一端を接し一
体とし、この接点が傾斜ルーバーの斜面の長さをa:b
(aは接点の位置から傾斜ルーバーの前縁までの距離で
あり、bは接点の位置から傾斜ルーバーの後縁までの距
離である。)に内分する点で、a:bが4:1〜5:1
の範囲内にあり、又傾斜ルーバーとくの字形横断面のル
ーバーとの交叉角度が90゜〜120゜の範囲内にあ
り、又隣り合った傾斜ルーバー間の間隔がルーバーの全
長をルーバーのジグザグ状通路の気流方向変換数、即ち
通路の直線部の数で除した値以下となっているので、エ
リミネータの気流通路内の乱流発生を極少におさえると
共に、気流の慣性力を有効に利用して空気中の水滴を分
離することができ、圧力損失も低い。In the present invention, as described above, a large number of louvers whose front ends are folded are erected so as to be inclined with respect to the air flow direction, and the plates are arranged at regular intervals. One end of a louver with a V-shaped cross section is brought into contact with and integrated with each other, and this contact makes the length of the inclined surface of the inclined louver a: b.
(A is the distance from the position of the contact to the leading edge of the tilted louver, b is the distance from the position of the contact to the trailing edge of the tilted louver), and a: b is 4: 1. ~ 5: 1
The angle of intersection between the inclined louver and the louver having a dogleg cross section is in the range of 90 ° to 120 °, and the distance between adjacent inclined louvers is the zigzag shape of the louver along the entire length of the louver. Since it is less than or equal to the number of airflow direction changes in the passage, that is, the value divided by the number of straight parts of the passage, it minimizes turbulence generation in the air passage of the eliminator and effectively uses the inertial force of the airflow. Water drops in the air can be separated and the pressure loss is low.
【0009】a:bについて、4:1未満だと圧力損失
が非常に高くなり、5:1を超えると水滴捕集効果がな
くなり実用に適さなくなるからである。交叉角度につい
て、90゜未満だと圧力損失が非常に高くなり、120
゜を超えると水滴捕集効果がなくなり実用に適さなくな
るからである。又、隣り合った傾斜ルーバー間の間隔が
ルーバーの全長をルーバーのジグザグ状通路の気流方向
変換数で除した値を超えると水滴捕集効果がなくなるか
らである。With respect to a: b, if it is less than 4: 1, the pressure loss becomes very high, and if it exceeds 5: 1, the water drop collecting effect is lost and it becomes unsuitable for practical use. If the crossing angle is less than 90 °, the pressure loss becomes very high,
This is because if it exceeds ℃, the water drop collecting effect is lost and it becomes unsuitable for practical use. Further, if the interval between the adjacent inclined louvers exceeds the value obtained by dividing the total length of the louvers by the number of changes in the air flow direction of the zigzag passages of the louvers, the water drop collecting effect is lost.
【0010】エリミネータの中で気流中の水滴がどのよ
うに捕集されるのか図7によって説明する。気流中に置
かれたくの字形横断面のルーバー21の一端から入った
外気は、ジグザグ状の気流通路の第1段目の壁面21a
に沿って流れるが、慣性力のため直進し、第2段目の壁
面21bに衝突し、変流する。この際、気流中の水滴は
空気と分離して壁面に沿って流れ、水滴たまり22に集
まり、垂直下方に流れ落ちる。変流した空気は、3段目
に入ると、傾斜ルーバー23の壁面23aに衝突し、再
度変流した後、エリミネータ出口に向かって流れる。以
上のようにして、空気中の水滴はエリミネータを通過す
る間に捕集され、水滴を含まない空気を吸気フィルタに
供給することができる。How water drops in the air stream are collected in the eliminator will be described with reference to FIG. The outside air entering from one end of the louver 21 having a dogleg-shaped cross section placed in the airflow is the first wall surface 21a of the zigzag airflow passage.
However, due to the inertial force, it goes straight and collides with the wall surface 21b of the second stage to change the current. At this time, the water droplets in the air flow separate from the air and flow along the wall surface, collect in the water droplet pool 22 and flow down vertically. When the changed air enters the third stage, it collides with the wall surface 23a of the inclined louver 23, changes its flow again, and then flows toward the eliminator outlet. As described above, the water droplets in the air are collected while passing through the eliminator, and the air not containing the water droplets can be supplied to the intake filter.
【0011】[0011]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図1(A)〜(C)に示すように、エリミネータ
1は、フレーム2の中に、一定の間隔で、傾斜ルーバー
3とくの字形横断面のルーバー4とが立設されてなるも
のである。図2に示すように、傾斜ルーバー3とくの字
形ルーバー4とは傾斜ルーバーのc点で接し、一体とな
っている。傾斜ルーバー3の一端である空気出口方向の
端部は所定の角度をもって屈折されている。また、c点
は傾斜ルーバーの斜面の長さをa:bに内分する点であ
る。即ち、長さaはc点から傾斜ルーバーの一端の屈折
点である前縁3aまでの距離であり、また長さbはc点
から傾斜ルバーの他端の後縁3bまでの距離である。図
2中、dは水滴たまりである。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 (A) to 1 (C), an eliminator 1 is composed of a frame 2 in which a slanted louver 3 and a louver 4 having a V-shaped cross section are erected at regular intervals. . As shown in FIG. 2, the inclined louver 3 and the dogleg-shaped louver 4 are in contact with each other at a point c of the inclined louver and are integrated. One end of the inclined louver 3 which is one end in the air outlet direction is bent at a predetermined angle. Point c is a point where the length of the slope of the inclined louver is internally divided into a: b. That is, the length a is the distance from the point c to the front edge 3a, which is the bending point at one end of the inclined louver, and the length b is the distance from the point c to the trailing edge 3b at the other end of the inclined louver. In FIG. 2, d is a water drop pool.
【0012】本実施例では、ルーバーの長さ(l)は1
20mm、交叉角度(θ)は120゜、aとbとの長さ
の比は5:1、ルーバーのピッチ(p)は30mmとし
た。このエリミネータについて、図3に模式的に示す水
捕集試験装置により、水滴の捕集効率及び圧力損失を測
定した。その結果は次の通りであった。エリミネータの
外形寸法600mm角、風速2m/s、試験水量7.5
l/分において、エリミネータの水滴捕集効率99%以
上、圧力損失3mm水柱であった。この値から、従来の
エリミネータの場合(捕集効率99%、圧力損失5mm
水柱)に比較し、水滴の捕集効率は低下せず、圧力損失
は約60%に低下したことがわかる。In this embodiment, the length (l) of the louver is 1
20 mm, the crossing angle (θ) was 120 °, the length ratio between a and b was 5: 1, and the louver pitch (p) was 30 mm. With respect to this eliminator, the water collection efficiency and pressure loss were measured by a water collection test device schematically shown in FIG. The results were as follows. External dimensions of eliminator 600 mm square, wind speed 2 m / s, test water volume 7.5
At 1 / min, the water drop collection efficiency of the eliminator was 99% or more, and the pressure loss was 3 mm of water column. From this value, in the case of the conventional eliminator (collection efficiency 99%, pressure loss 5 mm
It can be seen that the water drop collection efficiency did not decrease and the pressure loss decreased to about 60% compared to the water column).
【0013】図3において、11は送風機、12は試験
ダクト、13は噴霧ノズル、14はエリミネータを示
す。試験装置内にQから給水され、噴霧ノズル13を経
てエリミネータ14へ噴霧され、ルーバーに沿って流下
した水はQ1 で捕集され、排出される。エリミネータ1
4の下流側へ飛散し、捕集された水はQ2 から排出され
る。図中、15は差圧計である。水捕集効率はQ1 /Q
1 +Q2 で表される。上記実施例では、くの字形横断面
のルーバー4の空気入口側の端部は屈折されていない
が、図4に示すように、くの字形横断面のルーバー5の
空気入口側の縁を屈折したものを使用してもよい。かか
る屈折部5aを設けることにより、ルーバーが補強され
得る。ルーバーの材質は鉄、アルミニウム等の金属板、
又は塩化ビニル樹脂等の成形品が用いられる。フレーム
は一般に鉄板が用いられているが、合成樹脂製でもよ
い。In FIG. 3, 11 is a blower, 12 is a test duct, 13 is a spray nozzle, and 14 is an eliminator. Water supplied from Q into the test apparatus, sprayed onto the eliminator 14 via the spray nozzle 13, and the water flowing down along the louver is collected at Q 1 and discharged. Eliminator 1
The water scattered to the downstream side of No. 4 and collected is discharged from Q 2 . In the figure, 15 is a differential pressure gauge. Water collection efficiency is Q 1 / Q
It is represented by 1 + Q 2 . In the above embodiment, the end of the louver 4 having a dogleg-shaped cross section on the air inlet side is not bent, but as shown in FIG. 4, the edge of the louver 5 having a dogleg-shaped cross section on the air inlet side is bent. You may use what was done. By providing such a bent portion 5a, the louver can be reinforced. The material of the louver is a metal plate such as iron or aluminum,
Alternatively, a molded product such as vinyl chloride resin is used. An iron plate is generally used for the frame, but it may be made of synthetic resin.
【0014】[0014]
【発明の効果】屋外設置の吸気フィルタに本発明のエリ
ミネータを設置することにより、台風等の烈しい風雨に
対しても高い雨水捕集効率が得られるため、吸気フィル
タ内に取付けた高性能フィルタが雨水による性能低下を
来すこともなく装置の信頼性の向上になる。又、従来形
のエリミネータに較べ、圧力損失が低くなるので、吸気
フィルタ全体の圧力損失も低くなり、例えばガスタービ
ンの吸込効率が上昇し、ガスタービンの効率向上を図る
ことが出来る。又、空調設備の吸気フィルタにおいて
は、圧力損失の低下により、吸気用送風機の電力節減に
も役立つ。又、圧力損失の許容限度が高い吸気フィルタ
の場合には、エリミネータの吸込み風速を高く設定し、
エリミネータの通風面積を小さくすることによりエリミ
ネータの小形化を図ることができ、製作費用の低減にも
役立つ。By installing the eliminator of the present invention in an intake filter installed outdoors, a high rainwater collection efficiency can be obtained even against severe wind and rain such as typhoons. Therefore, a high-performance filter installed in the intake filter can be used. The reliability of the device is improved without the performance deterioration due to rainwater. Further, since the pressure loss is lower than that of the conventional eliminator, the pressure loss of the entire intake filter is also reduced, and, for example, the suction efficiency of the gas turbine is increased and the efficiency of the gas turbine can be improved. Further, in the air intake filter of the air conditioning equipment, the reduction of the pressure loss is useful for saving the electric power of the air intake blower. Also, in the case of an intake filter with a high allowable pressure loss limit, set the intake wind speed of the eliminator to a high value.
By reducing the ventilation area of the eliminator, the size of the eliminator can be reduced, which also helps to reduce the manufacturing cost.
【図1】(A)本発明によるエリミネータの正面図 (B)図1(A)のエリミネータの線A−A断面図 (C)図1(A)のエリミネータの線B−B断面図1A is a front view of an eliminator according to the present invention; FIG. 1B is a sectional view taken along line AA of the eliminator of FIG. 1A; and FIG. 1C is a sectional view taken along line BB of the eliminator of FIG. 1A.
【図2】図1のルーバー部分を説明するためのルーバー
の部分拡大断面図FIG. 2 is a partially enlarged sectional view of a louver for explaining the louver portion of FIG.
【図3】エリミネータの水捕集試験を行うための装置の
模式的断面図FIG. 3 is a schematic cross-sectional view of an apparatus for performing a water collection test on an eliminator.
【図4】本発明によるエリミネータの別の実施例のルー
バーを示す部分拡大断面図FIG. 4 is a partially enlarged sectional view showing a louver of another embodiment of the eliminator according to the present invention.
【図5】(A)従来のエリミネータの正面図 (B)図5(A)のエリミネータの線C−C断面図5A is a front view of a conventional eliminator, FIG. 5B is a cross-sectional view taken along line CC of the eliminator of FIG.
【図6】(A)従来のエリミネータに用いられているル
ーバー部分の横断面図 (B)従来のエリミネータに用いられているルーバー部
分の横断面図 (C)従来のエリミネータに用いられているルーバー部
分の横断面図6A is a cross-sectional view of a louver portion used in a conventional eliminator, FIG. 6B is a cross-sectional view of a louver portion used in a conventional eliminator, and FIG. 6C is a louver used in a conventional eliminator. Cross section of part
【図7】気流中の水滴が捕集される過程を説明するため
のルーバー部分の横断面図FIG. 7 is a cross-sectional view of a louver portion for explaining a process of collecting water droplets in an air stream.
1 エリミネータ 2 フレーム 3 傾斜ルーバー 3a 傾斜ルーバーの前縁 3b 傾斜ルーバーの後縁 4 くの字形ルーバー 5 くの字形ルーバー 5a 屈折部 a 交叉点cから前縁3aまでの距離 b 交叉点cから後縁3bまでの距離 c 交叉点 d 水滴たまり l ルーバー長さ p ルーバーピッチ θ 交叉角度 11 エリミネータ 12 フレーム 13 ルーバー 21 くの字形ルーバー 21a 第1段目壁面 21b 第2段目壁面 22 水滴たまり 23 傾斜ルーバー 23a 第3段目壁面 1 eliminator 2 frame 3 slanted louver 3a front edge of slanted louver 3b rear edge of slanted louver 4 dog-shaped louver 5 dog-shaped louver 5a bending part a distance from crossing point c to front edge 3a b crossing point c Distance to 3b c Crossing point d Droplet pool l Louver length p Louver pitch θ Crossing angle 11 Eliminator 12 Frame 13 Louver 21 V-shaped louver 21a 1st stage wall surface 21b 2nd stage wall surface 22 Droplet pool 23 Inclined louver 23a Third stage wall
フロントページの続き (72)発明者 川上 徳慶 茨城県結城市作の谷415番地 日本無機株 式会社結城工場内Front page continuation (72) Inventor Tokukei Kawakami 415 Sakunoya, Yuki City, Ibaraki Prefecture Japan Inorganic stock company Yuki factory
Claims (4)
直交する方向に互いに離間させて立設された多数の傾斜
ルーバーとこれらの傾斜ルーバーのそれぞれの板面に前
縁を接して一体としたくの字形横断面のルーバーとを有
するエリミネータであって、前記傾斜ルーバーと前記く
の字形横断面のルーバーの前縁との接点の位置から前記
傾斜ルーバーの前縁までの距離と前記接点の位置から前
記傾斜ルーバーの後縁までの距離との比が4対1から5
対1までの間にあり、前記傾斜ルーバーとくの字形横断
面のルーバーとの交叉角度が90゜から120゜までの
範囲内にあり、且つ前記傾斜ルーバーの間隔が気流通路
の気流方向全長を気流通路の気流方向変換数で除した値
以下の寸法であることを特徴とするエリミネータ。1. A large number of inclined louvers, which are inclined with respect to the air flow direction and are spaced from each other in a direction orthogonal to the air flow direction, and their front faces are in contact with the respective plate surfaces of these inclined louvers to be integrated. An eliminator having a louver with a dogleg-shaped cross section, the distance from the position of the contact between the inclined louver and the front edge of the louver with the dogleg cross section to the front edge of the inclined louver, and the position of the contact. To the trailing edge of the inclined louver is 4: 1 to 5
The angle of intersection between the inclined louver and the louver having a dogleg-shaped cross section is in the range of 90 ° to 120 °, and the interval between the inclined louvers is the entire length of the airflow passage in the airflow direction. An eliminator having a size equal to or smaller than a value obtained by dividing the number of airflow direction changes in a passage.
斜ルーバーであることを特徴とする請求項1記載のエリ
ミネータ。2. The eliminator according to claim 1, wherein the slanted louver is a slanted louver with a leading edge bent.
入口側の端部が屈折されたルーバーであることを特徴と
する請求項1又は2記載のエリミネータ。3. The eliminator according to claim 1, wherein the louver having a dogleg-shaped cross section is a louver whose end portion on the air flow inlet side is bent.
分の長さが、屈折部の先端と隣接の傾斜ルーバーの後縁
とを結んだ線が気流流れ方向と平行になるような長さで
あることを特徴とする請求項1乃至3のいずれか一項に
記載のエリミネータ。4. The length of the bent portion of the front edge of the inclined louver is such that the line connecting the tip of the bending portion and the trailing edge of the adjacent inclined louver is parallel to the air flow direction. The eliminator according to any one of claims 1 to 3, wherein
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8736395A JPH08252416A (en) | 1995-03-20 | 1995-03-20 | Eliminator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8736395A JPH08252416A (en) | 1995-03-20 | 1995-03-20 | Eliminator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08252416A true JPH08252416A (en) | 1996-10-01 |
Family
ID=13912818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8736395A Pending JPH08252416A (en) | 1995-03-20 | 1995-03-20 | Eliminator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08252416A (en) |
-
1995
- 1995-03-20 JP JP8736395A patent/JPH08252416A/en active Pending
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