JPH048975Y2 - - Google Patents
Info
- Publication number
- JPH048975Y2 JPH048975Y2 JP7923287U JP7923287U JPH048975Y2 JP H048975 Y2 JPH048975 Y2 JP H048975Y2 JP 7923287 U JP7923287 U JP 7923287U JP 7923287 U JP7923287 U JP 7923287U JP H048975 Y2 JPH048975 Y2 JP H048975Y2
- Authority
- JP
- Japan
- Prior art keywords
- bag
- air
- filter
- damper
- shaped filter
- 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.)
- Expired
Links
- 238000009423 ventilation Methods 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 5
- 238000004378 air conditioning Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Central Air Conditioning (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は袋形フイルタ装置に係り、特に換気空
気調和設備に配設される袋形フイルタ装置の改良
に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a bag-shaped filter device, and particularly relates to an improvement of a bag-shaped filter device installed in ventilation and air conditioning equipment.
一般に、換気空調設備の風路に袋形フイルタを
設置し、この袋形フイルタに通風させることによ
り除塵を行うものがある。この袋形フイルタ装置
は、処理風量に見合う枚数以上の袋形フイルタを
風路外形寸法から決定されるフイルタ配列にした
がつて設置している。例えば、10万m3／ｈの風量
を排気する設備において、１枚の袋形フイルタの
定格風量が3300m3／ｈである場合、袋形フイルタ
の必要枚数は、
〔100000m3/h〕÷〔3300m3／ｈ〕＝30.3…
となり、31枚以上のフイルタを要する。このと
き、装置の風路外形寸法よりフイルタの31枚以上
の配列が５段×７列と規定された場合、取付けら
れるフイルタは５段×７列＝35枚となる。あるい
は必要枚数が31枚であるため、余分の４枚分につ
ていは閉止板を取付ける場合もある。
Generally, a bag-shaped filter is installed in the air path of ventilation air conditioning equipment, and dust is removed by ventilation through the bag-shaped filter. In this bag-type filter device, a number of bag-type filters equal to or greater than the amount of air to be processed are installed according to a filter arrangement determined from the external dimensions of the air passage. For example, in a facility that exhausts an air volume of 100,000 m 3 /h, if the rated air volume of one bag filter is 3300 m 3 /h, the required number of bag filters is [100000 m 3 /h] ÷ [ 3300m 3 /h] = 30.3..., and 31 or more filters are required. At this time, if the arrangement of 31 or more filters is defined as 5 stages x 7 rows based on the external dimensions of the air path of the device, the number of filters to be installed will be 5 stages x 7 rows = 35 filters. Alternatively, since the required number is 31, closing plates may be installed for the extra four.
上述の如く定められた袋形フイルタ装置の構成
例を第４〜５図に示す。すなわち、装置本体１の
内部はフイルタ取付フレーム２に設けた袋形フイ
ルタ３により遮断状態となつており、基盤目状に
５段×７列に区切つた取付けフレーム２の各透孔
部に袋形フイルタ３が取付けられる。本体１の前
後壁にはフイルタ３の開口側に対応して空気入口
風道４が、またフイルタ３の尾端に対応して空気
出口風道５がそれぞれ設けられている。したがつ
て、換気空調設備を運転しているときは、第４、
第６図に示すように、袋形フイルタ３は風下側で
ある空気出口風道５に向けて膨出し、集塵作用を
なす。 An example of the configuration of the bag-shaped filter device determined as described above is shown in FIGS. 4 and 5. That is, the inside of the main body 1 of the device is shut off by the bag-shaped filter 3 provided on the filter mounting frame 2, and each through-hole of the mounting frame 2, which is divided into 5 stages x 7 rows in the shape of a base board, has a bag-shaped filter. Filter 3 is attached. An air inlet air passage 4 is provided on the front and rear walls of the main body 1 in correspondence with the opening side of the filter 3, and an air outlet air passage 5 is provided in correspondence to the tail end of the filter 3. Therefore, when operating ventilation and air conditioning equipment,
As shown in FIG. 6, the bag-shaped filter 3 bulges toward the air outlet airway 5 on the leeward side and performs a dust collection function.
ところが、上述した袋形フイルタ装置では、換
気空調設備の運転を停止した場合、第４〜第６図
の如く風下側に膨出状態で流されていた袋形フイ
ルタ３は、停止と同時に第７〜８図に示すよう
に、垂れ下がり状態となつてしまう。このため、
運転停止に至るまで流れていた空気が逆方向へ押
し戻される現象が生じ、袋形フイルタ３に対し、
通常の風下側から風上側に向かつて圧力が加わる
問題があつた。特に、換気空調設備に予備機が設
けてあり、運転機の停止と同時に予備機を起動さ
せるシステムの場合には、予備機側への逆流によ
る送圧が更に大きくなることが考えられる。した
がつて、袋形フイルタ３が第７〜８図のように垂
れ下がつた状態で逆流が生じる結果、袋形フイル
タ３の圧力損失係数も大となつて風下側から加わ
る圧力も大きくなり、袋形フイルタ３の破損、お
よびフイルタ取付フレーム２の破損に至る問題が
あり、換気空調設備としての健全性に問題があつ
た。
However, in the above-mentioned bag-type filter device, when the operation of the ventilation air conditioning equipment is stopped, the bag-type filter 3, which has flowed in a bulged state to the leeward side as shown in FIGS. ~ As shown in Figure 8, it becomes a sagging state. For this reason,
A phenomenon occurs in which the air that had been flowing until the operation was stopped is pushed back in the opposite direction, and the bag-shaped filter 3 is
There was a problem in which pressure was applied from the normal leeward side to the windward side. In particular, in the case of a system in which a standby unit is provided in the ventilation air conditioning equipment and the standby unit is activated at the same time as the operating unit is stopped, the pressure sent to the standby unit due to backflow may become even greater. Therefore, as a result of a backflow occurring when the bag-shaped filter 3 is hanging down as shown in FIGS. 7 and 8, the pressure loss coefficient of the bag-shaped filter 3 increases, and the pressure applied from the leeward side also increases. There were problems leading to damage to the bag-shaped filter 3 and damage to the filter mounting frame 2, which led to problems with the integrity of the ventilation air conditioning equipment.
本考案は、上記従来の問題点に着目し、換気空
調設備の運転停止等に伴う袋形フイルタ装置内で
の逆流が生じても袋形フイルタに係る圧力を減
じ、フイルタ破損や取付フレームの破損が生じな
いようにした袋形フイルタ装置を提供することを
目的とする。 The present invention focuses on the above-mentioned conventional problems and reduces the pressure applied to the bag filter even if backflow occurs in the bag filter device due to the suspension of operation of ventilation air conditioning equipment, etc., and reduces the pressure on the bag filter, causing damage to the filter and damage to the mounting frame. It is an object of the present invention to provide a bag-shaped filter device that prevents the occurrence of.
上記目的を達成するために、本考案に係る袋形
フイルタ装置は、風路途中に当該風路を遮断状態
に袋形フイルタを配設することにより通風除塵す
る袋形フイルタ装置において、前記袋形フイルタ
の取付部に通風逆流により開放されるダンパを設
けた構成とした。
In order to achieve the above object, the bag-type filter device according to the present invention is a bag-type filter device that performs ventilation and dust removal by disposing a bag-type filter in the middle of an air path so as to block the air path. The structure is such that a damper that is opened by backflow of ventilation is provided at the mounting part of the filter.
上記構成により、例えば主機運転停止により風
路に遮断配置されている袋形フイルタを挟んで前
後に差圧が生じ、通常の風下側から風上に向かう
通風逆流が生じた場合、袋形フイルタの取付部に
設けたダンパが開き、圧力が逃がされることにな
る。この結果、フイルタ自身やその取付枠にも逆
流による圧力が加わらず、フイルタ破損等の問題
も生じなくなる。
With the above configuration, for example, when the main engine stops operating and a pressure difference occurs across the bag-shaped filter placed in the air path, and a backflow of air from the leeward side to the windward occurs, the bag-shaped filter The damper provided at the mounting part opens and the pressure is released. As a result, pressure due to backflow is not applied to the filter itself or its mounting frame, and problems such as damage to the filter do not occur.
以下に本考案に係る袋形フイルタ装置の実施例
を図面を参照して詳細に説明する。
Embodiments of the bag-shaped filter device according to the present invention will be described in detail below with reference to the drawings.
第１〜３図は実施例に係る袋形フイルタ装置の
構成を示したものである。図示のように、この袋
形フイルタ装置は風路を構成する容器状の装置本
体１０を有し、この本体１０内に前後を遮断する
ように格子状のフイルタ取付フレーム１２を配置
し、フレーム１２の各枡目部に袋形フイルタ１４
を取付けている。袋形フイルタ１４は通常運転時
の風上側に開口を向けるように取付けられ、装置
本体１０の前壁に接続された空気入口風道１６か
ら導入された空気をフイルタ１４に取入れて集塵
し、除塵空気を本体１０の後壁に設けた空気出口
風道１８から排出するようにしている。 1 to 3 show the structure of a bag-shaped filter device according to an embodiment. As shown in the figure, this bag-shaped filter device has a container-shaped device main body 10 constituting an air path, and a lattice-shaped filter mounting frame 12 is disposed within this main body 10 so as to block the front and back. A bag-shaped filter 14 is installed in each square of the
is installed. The bag-shaped filter 14 is installed so that its opening faces upwind during normal operation, and the air introduced from the air inlet air passage 16 connected to the front wall of the device main body 10 is taken into the filter 14 to collect dust. The dust-removed air is discharged from an air outlet air passage 18 provided on the rear wall of the main body 10.
ここで、袋形フイルタ１４の取付枚数は換気空
調設備での処理風量に見合う枚数以上必要とさ
れ、１枚のフイルタ１４の定格風量により定めら
れるが、前述したように処理風量が10万m3／ｈで
フイルタ定格風量3300m3／ｈである場合には31枚
以上必要となる。そして、装置の風路外形寸法に
より５段×７列と規定された場合には実質的に取
付けフレーム１２の枡目中４枚分が余分となる。
そこで、実施例では、この余分の枡目部に対して
逆流圧力を逃がすためのダンパ２０を取付けたも
のである。すなわち、フイルタ取付フレーム１２
の枡目部に装着可能にダンパケーシング２２を形
成し、このケーシング２２に上縁がヒンジ結合さ
れたダンパ羽根２４を上下２段取付けている。ダ
ンパ羽根２４は通常運転時の風下側へは開かず、
風上側にのみ開放されるように、適宣のストツパ
が施されている。そして、このダンパ２０の風下
側の圧力が風上側より大きくなつた場合に逆流通
風により容易にダンパ羽根２４が開放されるよう
に、各ダンパ羽根２４にはカウンタウエイト２６
が取付けられている。カウンタウエイト２６はダ
ンパ羽根２４の閉止状態でヒンジ側から空気出口
風道１８側に延びるアーム２８の先端に設けられ
て羽根重量とバランスされ、逆流通風が生じたと
きに簡単に開動作し得るものとなつている。 Here, the number of bag-shaped filters 14 to be installed is required to be at least the number corresponding to the air processing volume of the ventilation air conditioning equipment, and is determined by the rated air volume of one filter 14, but as mentioned above, the air processing volume is 100,000 m3. /h and the filter rated air volume is 3300m 3 /h, 31 or more pieces are required. If 5 stages x 7 rows are defined according to the external dimensions of the air passage of the device, substantially four of the squares of the mounting frame 12 will be redundant.
Therefore, in the embodiment, a damper 20 is attached to this extra square section to release the backflow pressure. That is, the filter mounting frame 12
A damper casing 22 is formed so as to be attachable to the square part of the damper casing 22, and damper blades 24 whose upper edges are hinged are attached to the casing 22 in two upper and lower stages. The damper blade 24 does not open to the leeward side during normal operation,
Appropriate stoppers are installed so that it can only be opened on the windward side. Each damper blade 24 is equipped with a counterweight 26 so that when the pressure on the leeward side of the damper 20 becomes greater than that on the windward side, the damper blade 24 can be easily opened by the backflow wind.
is installed. The counterweight 26 is provided at the tip of an arm 28 extending from the hinge side to the air outlet air passage 18 side when the damper blade 24 is closed, and is balanced with the weight of the blade, and can be easily opened when backflow air occurs. It is becoming.
このような袋形フイルタ装置によれば、換気空
調設備を稼働している場合には、空気は入口風道
１６から装置本体１０内に入り、複数の袋形フイ
ルタ１４を通り、除塵されて出口風道１８から排
出される。このときダンパ２０は閉止状態にあ
り、また、処理風量に応ずるフイルタ枚数は確保
されているので運転に支障はないものとなつてい
る。次いで、換気空調設備の運転停止を行うと、
入口風道１６からの空気流入が無くなるため、袋
形フイルタ１４は膨出状態から収縮し、垂れ下が
ることとなり、今まで流れていた空気が逆方向に
押し戻される現象が生じるが、このとき、風下側
の圧力によりダンパ２０のダンパ羽根２４が開放
され、圧力が逃がされることになる。この結果、
逆流通風により袋形フイルタ１４やその取付フレ
ーム１２に大きな逆流通風による圧力が加わら
ず、それらの破損のおそれがなくなる。 According to such a bag-shaped filter device, when the ventilation air conditioning equipment is in operation, air enters the device main body 10 from the inlet air duct 16, passes through the plurality of bag-shaped filters 14, is dust-removed, and then exits at the outlet. It is discharged from the air duct 18. At this time, the damper 20 is in a closed state, and the number of filters corresponding to the amount of air to be processed is secured, so there is no problem in operation. Next, when the ventilation and air conditioning equipment is stopped,
Since air no longer flows in from the inlet air duct 16, the bag-shaped filter 14 contracts from its expanded state and begins to hang down, causing a phenomenon in which the air that was previously flowing is pushed back in the opposite direction. The damper blades 24 of the damper 20 are opened by the pressure, and the pressure is released. As a result,
The backflow air does not apply a large pressure to the bag-shaped filter 14 or its mounting frame 12, and there is no risk of damage to them.
上記実施例によれば、従来の装置が正規の空気
流れ方向についてのみ考慮していた結果、逆流・
逆圧が生じることによつてフイルタやフレームの
破損を招いていた問題を改善でき、特に、換気空
調設備に予備機等を設けた切り換え運転をなすよ
うにしていた場合に発生していたフイルタ破損対
策に有効なものとなる。 According to the above embodiment, as a result of the conventional device considering only the normal air flow direction, backflow and
It is possible to improve the problem of damage to filters and frames due to back pressure, and in particular, it can improve the problem of filter damage that occurs when ventilation air conditioning equipment is operated with a spare unit installed. This will be an effective countermeasure.
なお、上記実施例においては逆流通風時のダン
パ２０の開動作が効果的に行われるようにダンパ
羽根２４にカウンタウエイト２６を設けている
が、ダンパ羽根２４の軽量化等により開動作が容
易に行われる構成としてカウンタウエイト２６を
省略する構成としてもよい。 Note that in the above embodiment, a counterweight 26 is provided on the damper blade 24 so that the opening operation of the damper 20 is effectively performed during backflow wind, but the opening operation can be easily performed by reducing the weight of the damper blade 24. A configuration in which the counterweight 26 is omitted may also be used.
以上説明したように、本考案によれば、フイル
タ取付フレームの余分なスペースを利用して逆流
通風による圧力逃がしダンパをもうれたことによ
り、運転停止時などに生じる一時的に高い逆流圧
力を風上側に逃がすことができ、袋形フイルタや
取付フレーム１２の破損を防止できるというすぐ
れた効果が得られる。
As explained above, according to the present invention, by using the extra space of the filter mounting frame to provide a pressure relief damper due to backflow air, temporarily high backflow pressure that occurs when the operation is stopped, etc. This provides an excellent effect of preventing the bag-shaped filter and the mounting frame 12 from being damaged.
第１図は実施例に係る袋形フイルタ装置の断面
構成図、第２図は第１図の−線断面図、第３
図１，２はダンパの閉状態と開状態を示す斜視
図、第４図は従来装置の断面構成図、第５図は第
４図の−線断面図、第６図は袋形フイルタの
通常通風時の斜視図、第７図は従来装置の逆流通
風時の断面構成図、第８図は同じく逆流通風時の
袋形フイルタの斜視図である。
１０……装置本体、１２……フイルタ取付フレ
ーム、１４……袋形フイルタ、２０……ダンパ、
２４……ダンパ羽根。
FIG. 1 is a cross-sectional configuration diagram of a bag-shaped filter device according to an embodiment, FIG. 2 is a cross-sectional view taken along the line -- in FIG.
Figures 1 and 2 are perspective views showing the damper in its closed and open states, Figure 4 is a sectional view of the conventional device, Figure 5 is a sectional view taken along the - line in Figure 4, and Figure 6 is a conventional bag-shaped filter. FIG. 7 is a cross-sectional view of the conventional device when the air is flowing backwards, and FIG. 8 is a perspective view of the bag-shaped filter when the air is flowing backwards. 10...Device body, 12...Filter mounting frame, 14...Bag filter, 20...Damper,
24...Damper blade.
Claims (1)
を配設することにより通風除塵する袋形フイルタ
装置において、前記袋形フイルタの取付部に通風
逆流により開放されるダンパを設けたことを特徴
とする袋形フイルタ装置。 A bag-type filter device that performs ventilation and dust removal by disposing a bag-type filter in the middle of an air path to block the air path, characterized in that a damper that is opened by backflow of ventilation is provided at the attachment part of the bag-type filter. A bag-shaped filter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7923287U JPH048975Y2 (en) | 1987-05-27 | 1987-05-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7923287U JPH048975Y2 (en) | 1987-05-27 | 1987-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63189322U JPS63189322U (en) | 1988-12-06 |
| JPH048975Y2 true JPH048975Y2 (en) | 1992-03-06 |
Family
ID=30928902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7923287U Expired JPH048975Y2 (en) | 1987-05-27 | 1987-05-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048975Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7515719B2 (en) | 2001-03-27 | 2009-04-07 | Cambridge Mechatronics Limited | Method and apparatus to create a sound field |
| US7577260B1 (en) | 1999-09-29 | 2009-08-18 | Cambridge Mechatronics Limited | Method and apparatus to direct sound |
-
1987
- 1987-05-27 JP JP7923287U patent/JPH048975Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7577260B1 (en) | 1999-09-29 | 2009-08-18 | Cambridge Mechatronics Limited | Method and apparatus to direct sound |
| US7515719B2 (en) | 2001-03-27 | 2009-04-07 | Cambridge Mechatronics Limited | Method and apparatus to create a sound field |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63189322U (en) | 1988-12-06 |
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