JPS59196997A - Fan - Google Patents
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- JPS59196997A JPS59196997A JP7010683A JP7010683A JPS59196997A JP S59196997 A JPS59196997 A JP S59196997A JP 7010683 A JP7010683 A JP 7010683A JP 7010683 A JP7010683 A JP 7010683A JP S59196997 A JPS59196997 A JP S59196997A
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- Prior art keywords
- impeller
- pressure
- plate
- casing
- suction port
- Prior art date
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Abstract
Description
【発明の詳細な説明】 本発明は送風機に関する。[Detailed description of the invention] The present invention relates to a blower.
送風機から吐き出された空気は燃料と混合され、ガス炉
、重油炉等の燃焼室に送り込まれて燃焼室内で着火され
るが、一般に、この混合気が着火されるときには、燃焼
室に定常燃焼時の約３〜５倍の着火圧がかかる。従って
、混合気を着火させ定常燃焼させるためには、送り込ま
れる気体の静圧をこの着火圧より高くしなければならな
い。この静圧がこの着火圧より高くないと、着火時に燃
焼室に強制的に気体を送り込むことが難しく、着火が困
難となる。The air discharged from the blower is mixed with fuel and sent into the combustion chamber of a gas furnace, heavy oil furnace, etc., and ignited within the combustion chamber. The ignition pressure is about 3 to 5 times that of the Therefore, in order to ignite the air-fuel mixture and cause steady combustion, the static pressure of the gas being fed must be higher than this ignition pressure. If this static pressure is not higher than this ignition pressure, it will be difficult to forcibly send gas into the combustion chamber at the time of ignition, making ignition difficult.
従来公知の送風機に於ては、送り込まれる気体の静圧が
着火圧に耐えるのに充分なものではなく、着火が容易に
行われなかった。この静圧を高めるためには、インペラ
の径を大きくするか、或いは多段式とする必要があった
が、そうするとインペラを駆動するモータも大型となり
、送風機全体が大型のものとなるため、高価で扱い難い
ものとなる。また、全圧の増加と共に風量及び所用動力
が増大するため、実際の使用には風量が過大となり、運
転コストが増大するという問題点があった。In conventionally known blowers, the static pressure of the gas being fed was not sufficient to withstand the ignition pressure, and ignition was not easily achieved. In order to increase this static pressure, it was necessary to increase the diameter of the impeller or use a multistage type, but this would require a larger motor to drive the impeller, making the entire blower larger, making it expensive. It becomes difficult to handle. Further, as the total pressure increases, the air volume and the required power increase, so there is a problem in that the air volume becomes excessive in actual use, leading to an increase in operating costs.
本発明は叙上の観点に立ってなされたものであり、本発
明の目的とするところは、燃焼室で混合気が着火される
とき、着火圧に耐えるのに充分な静圧が得られ、且つ、
定常燃焼に必要な量の空気を送り出し、而も、構成が簡
単な上、小型で扱い５い送風機を安価に提供することに
ある。The present invention has been made in view of the above, and an object of the present invention is to obtain sufficient static pressure to withstand the ignition pressure when the air-fuel mixture is ignited in the combustion chamber; and,
To provide an inexpensive blower that sends out the amount of air necessary for steady combustion, has a simple configuration, is small and easy to handle.
而して、本発明の要旨とするところは、インペラ室を形
成するケーシングの両側板を上記インペラの一対のシュ
ラウドと近接させ、上記ケーシングのインペラの吸込口
と対向する側板に取り付けられた公知のベルマウスを廃
すると共に、上記ケーシングの側板に、半月状の開口部
と、上記半月状の開口部の縁辺部からインペラの吸込口
内部に突出する仕切板とを有する昇圧板を設け、上記イ
ンペラ室の高圧部からインペラ内部に向かって発生する
戻り気流をそのエネルギを失わせることなく、再びイン
ペラに吸引させて更に昇圧させることにある。Accordingly, the gist of the present invention is to arrange the side plates of the casing forming the impeller chamber in close proximity to the pair of shrouds of the impeller, and to install a conventional method that is attached to the side plates of the casing facing the suction port of the impeller. In addition to eliminating the bell mouth, a pressure boosting plate having a half-moon-shaped opening and a partition plate protruding from the edge of the half-moon-shaped opening into the suction port of the impeller is provided on the side plate of the casing. The purpose is to cause the return airflow generated from the high-pressure part of the chamber toward the inside of the impeller to be sucked into the impeller again and to further increase the pressure without losing its energy.
以下図面に基づいて本発明の詳細な説明する。The present invention will be described in detail below based on the drawings.
第１図は本発明に係る送風機の一実施例を示す縦断面図
、第２図は第１図中Ａ−Ａ線に沿って切断した断面図、
第３図は昇圧板の形状を示す正面図、第４図はその側面
図、第５図、は公知の送風機の特性を示すグラフ、第６
図は本発明に係る送風機の特性を示すグラフである。FIG. 1 is a longitudinal sectional view showing an embodiment of a blower according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1,
Fig. 3 is a front view showing the shape of the booster plate, Fig. 4 is a side view thereof, Fig. 5 is a graph showing the characteristics of a known blower, and Fig. 6 is a graph showing the characteristics of a known blower.
The figure is a graph showing the characteristics of the blower according to the present invention.
尚、各図中、同一の符号を付したものは同一の構成要素
を示すものである。In each figure, the same reference numerals indicate the same components.
第１図乃至第４図中、１はインペラ、ｌａ、 Ｉａは羽
根、ｌｂ、 ｌｃはシュラウド、１ｄはインペラの吸込
口、２はハブ、３はインペラ１の駆動用モータ、４はケ
ーシング、４ａ、４ｂは側板、４ｃは風切り部、４ｄは
側＠４ｂに設けた孔、４ｅは吐出口、５は昇圧板、５ａ
は半月状の開口部、５ａは仕切板である。In Figures 1 to 4, 1 is the impeller, la and Ia are the blades, lb and lc are the shrouds, 1d is the suction port of the impeller, 2 is the hub, 3 is the drive motor for impeller 1, 4 is the casing, and 4a , 4b is a side plate, 4c is a wind section, 4d is a hole provided on the side @ 4b, 4e is a discharge port, 5 is a booster plate, 5a
is a half-moon-shaped opening, and 5a is a partition plate.
インペラ１は一対のシュラウド１ｂ、１０間に放散同形
に複数の羽根１ａ、１ａを配して成る部材であり、シュ
ラウド１ｃの中心孔１ｄはインペラの吸込口を形成する
。The impeller 1 is a member in which a plurality of blades 1a, 1a are disposed in a uniform shape between a pair of shrouds 1b, 10, and the center hole 1d of the shroud 1c forms the suction port of the impeller.
また、インペラ１の中心にはハブ２が取り付けられ、ハ
ブ２はケーシング４の側板４ａに取り付けられたモータ
３の軸に固定されている。Further, a hub 2 is attached to the center of the impeller 1, and the hub 2 is fixed to the shaft of a motor 3 attached to a side plate 4a of the casing 4.
インペラ１の羽根１ａ、 ｌａの形状としては本実施例
で示す多翼の他に、ラジアル、ターボ、翼形等のいずれ
を用いてもよい。As for the shape of the blades 1a and la of the impeller 1, in addition to the multi-blade shape shown in this embodiment, any shape such as radial, turbo, airfoil, etc. may be used.
ケーシング４の内部にはインペラ１を収納するインペラ
室が構成され、インペラ室のインペラ１の吐出側には巻
き始めの角度に比例して増大する渦巻状の空所が形成さ
れる。An impeller chamber that accommodates the impeller 1 is configured inside the casing 4, and a spiral cavity that increases in proportion to the winding start angle is formed on the discharge side of the impeller 1 in the impeller chamber.
ケーシング４の側板４ａ、 ４ｂはインペラ１の一対の
シュラウドｌｂ、 ｌｃと近接させ、風切り部４Ｃはイ
ンペラ１の吐出側と微小間隔で対向させ、インペラ１か
ら吐き出された気体が渦巻状の空所の終端部から始端部
に戻らないよう構成する。The side plates 4a and 4b of the casing 4 are placed close to the pair of shrouds lb and lc of the impeller 1, and the wind section 4C is placed opposite to the discharge side of the impeller 1 with a minute interval, so that the gas discharged from the impeller 1 flows into a spiral cavity. The structure is such that it does not return from the terminal end to the starting end.
また、吸入側の側板４ｂには、インペラ１の吸込口に対
向してインペラｌの内径と略同径の孔４ｄが設けられて
いる。Further, a hole 4d having substantially the same diameter as the inner diameter of the impeller 1 is provided in the side plate 4b on the suction side, facing the suction port of the impeller 1.
一般に、送風機のインペラから吐き出された気体はイン
ペラ室の渦巻状の空所をインペラの回転方向に回転しつ
つ圧力を増し、該空所の終端部に於て全圧が最大となる
。このとき、吐出口を絞って吐き出される風量を減らし
てゆくと、渦巻状の空所の終端部からインペラの羽根の
間を通りインペラの内部に向って図中集で示す戻り気流
が発生する。Generally, the gas discharged from the impeller of the blower increases its pressure as it rotates in the direction of rotation of the impeller through a spiral cavity in the impeller chamber, and the total pressure becomes maximum at the end of the cavity. At this time, when the discharge port is throttled to reduce the amount of air being discharged, a return airflow is generated from the end of the spiral cavity toward the inside of the impeller through between the blades of the impeller, as shown in the group in the figure.
公知の送風機に於ては、この戻り気流は吸入口に於て外
部気体と激しくぶつかってそのエネルギを失い、再びイ
ンペラに吸入されて渦巻状の空所に吐き出されてインペ
ラ室内で循環してしまい、吐き出しエネルギは略失われ
る。In known blowers, this return airflow violently collides with external gas at the suction port, loses its energy, is sucked into the impeller again, is discharged into the spiral cavity, and is circulated within the impeller chamber. , the exhaled energy is almost lost.
また、公知の送風機に於ては、インペラ１とケーシング
４の側１ｉ４ａ、 ４ｂとの間に隙間があるため、渦巻
状の空所の終端部の高圧部と始端部の低圧部との間にも
隙間ができ、吐出口を絞ったとき、高圧部の気体はこの
隙間から低圧部に吹き戻され、インペラ室内で循環して
吐き出しエネルギが失われる。In addition, in the known blower, since there is a gap between the impeller 1 and the sides 1i4a and 4b of the casing 4, there is a gap between the high pressure part at the end of the spiral cavity and the low pressure part at the start end. A gap is created in the impeller chamber, and when the discharge port is throttled, the gas in the high-pressure section is blown back to the low-pressure section through this gap, circulates within the impeller chamber, and discharge energy is lost.
而して、本発明の要旨とするところは、この戻り気流の
エネルギを失わせることなく、再びインペラにより吸引
させ、更に昇圧させることにある。Therefore, the gist of the present invention is to cause the return airflow to be sucked in again by the impeller and to further increase the pressure without losing the energy of the return airflow.
昇圧板５は第３図及び第４図に示す如く、ケーシングの
側板４ｂに設けた孔４ｄより適宜大きい円板に、これと
同心で孔４ｄと同径の半円とその直径とで囲まれる半月
状の開口部５ａを設け、この半月状の開口部５ａの縁辺
部にインペラ１の内部に突出する仕切板５ｂを設けたも
のである。As shown in FIGS. 3 and 4, the booster plate 5 is a circular plate that is appropriately larger than the hole 4d provided in the side plate 4b of the casing, and is surrounded by a semicircle that is concentric with the disk and has the same diameter as the hole 4d, and its diameter. A semicircular opening 5a is provided, and a partition plate 5b protruding into the impeller 1 is provided at the edge of the semicircular opening 5a.
昇圧板５に設けた半月状の開口部５ａは外部気体を導入
する吸入口となる。A half-moon-shaped opening 5a provided in the pressurizing plate 5 serves as an inlet for introducing external gas.
仕切板５ｂは昇圧板５の半月状の開口部５ａの直径をな
す縁辺部に設けられ、この縁辺部からインペラ１の吸込
口内部に突出しており、その突出の長さは昇圧板５が側
板４ｂに設けた孔４ｄに取り付けられたとき、インペラ
１内にインペラ幅の２０〜５０％入り込むよう設定し、
インペラ１の吸込口内部で昇圧板５により覆われた部分
と半月状の開口部とを仕切るよう構成する。The partition plate 5b is provided on the edge of the half-moon-shaped opening 5a of the pressure booster plate 5, and projects from this edge into the suction port of the impeller 1. The length of the protrusion is such that the pressure booster plate 5 is When installed in the hole 4d provided in the impeller 4b, it is set so that it enters the impeller 1 by 20 to 50% of the impeller width,
The inside of the suction port of the impeller 1 is configured to be partitioned between a portion covered by the pressure booster plate 5 and a half-moon-shaped opening.
仕切板５ｂは第１図に於て８で示す戻り気流が半月状の
開口部から吸入される外部気体と開口部の縁辺部に於て
激しく衝突してそのエネルギが失われることを防ぐもの
である。The partition plate 5b prevents the return airflow indicated by 8 in FIG. 1 from violently colliding with the external gas sucked in through the half-moon-shaped opening at the edge of the opening, thereby preventing its energy from being lost. be.
尚、本実施例に於ては、仕切板５ｂを半月状の開口部の
直径をなす縁辺部をプレス等により折曲げて設ける構成
とするが、仕切板５ｂを別途に形成し、これを半月状の
開口部の縁辺部に固着して設け、同様の構成としてもよ
い。In this embodiment, the partition plate 5b is provided by bending the edge portion that forms the diameter of the half-moon opening using a press or the like. It is also possible to have a similar configuration by fixing it to the edge of the opening.
第１図及び第２図に示す如く、昇圧板５は仕切板５ｂが
図中の中心線Ａ−Ａ、即ちケーシング４の吐出管中心線
と直交するインペラ中心線に対して１５度〜３０度の傾
きをもつようケーシング４の側板４ｂに設けた孔４ｄに
取り付ける。As shown in FIGS. 1 and 2, the pressure booster plate 5 has a partition plate 5b at an angle of 15 to 30 degrees with respect to the center line A-A in the figure, that is, the impeller center line that is perpendicular to the discharge pipe center line of the casing 4. It is attached to the hole 4d provided in the side plate 4b of the casing 4 so as to have an inclination of .
この取付角は、８で示した戻り気流の方向に沿って設定
し、戻り気流のエネルギを失わせることがないよう構成
する。This mounting angle is set along the direction of the return airflow indicated by 8, and configured so as not to lose the energy of the return airflow.
上記の如く、昇圧板５は外部気体を半月状の開口部から
導入すると共に、インペラ室内の高圧部から発生する戻
り気流を仕切板５ｂによって誘導して、そのエネルギを
失わせることなく、インペラ１の吸込側の低圧部に導く
ものである。As described above, the pressure booster plate 5 introduces external gas through the half-moon-shaped opening, and guides the return airflow generated from the high-pressure part in the impeller chamber through the partition plate 5b, thereby preventing the impeller from losing its energy. It leads to the low pressure part on the suction side of the
而して、インペラ１がモーフ３によって駆動され回転せ
しめられると、外部気体は昇圧板５に設けた半月状の開
口部５ａより吸入され、インペラ１の回転に伴う遠心力
により羽根１ａ、 ｌａの間から外方に吐き出される。When the impeller 1 is driven and rotated by the morph 3, external gas is sucked in through the half-moon-shaped opening 5a provided in the pressure booster plate 5, and the centrifugal force accompanying the rotation of the impeller 1 causes the blades 1a and la to rotate. It is expelled outward from between.
渦巻状の空所に吐き出された気体は、該空所内で静圧が
高められ、吐出口４ｅより排出されるのであるが、この
とき該空所の終端部で最高に昇圧された気体の一部は戻
り気流としてインペラ１の羽根１ａ、１ａの間から図中
８の方向に噴き出し、仕切板５ｂによって導かれ、昇圧
板５の開口部５ａから吸入される外部気体と激しく衝突
することなく、インペラ１の吸込側の低圧部に戻される
。The static pressure of the gas discharged into the spiral cavity increases within the cavity and is discharged from the discharge port 4e. The air is blown out from between the blades 1a, 1a of the impeller 1 in the direction 8 in the figure as a return airflow, guided by the partition plate 5b, and without violently colliding with the external gas sucked in from the opening 5a of the booster plate 5. It is returned to the low pressure section on the suction side of the impeller 1.
インペラ１の吸込側に戻された気体は、再びインペラ１
により吸入され、前記と同様にして更に昇圧されてその
一部は吐出口４ｅより排出されるが、他の一部は戻り気
流となってインペラ１の１１１口に再び戻されて昇圧さ
れる。The gas returned to the suction side of impeller 1 is returned to impeller 1.
The air is sucked in by the air, is further pressurized in the same manner as described above, and a part of it is discharged from the discharge port 4e, while the other part becomes a return airflow and is returned to the port 111 of the impeller 1 and is pressurized.
上記のサイクルは繰返して行われ、昇圧板５の開口部か
ら吸入され、インペラ１によって昇圧された気体の一部
は戻り気流として還流し、そのエネルギを失うことなく
、繰返して昇圧されるから、吐出口４ｅより排出される
気体は公知の送風機に比べて大きな全圧が得られるもの
である。The above cycle is repeated, and a part of the gas that is sucked in through the opening of the booster plate 5 and boosted by the impeller 1 is refluxed as a return airflow, and the pressure is repeatedly boosted without losing its energy. The gas discharged from the discharge port 4e has a higher total pressure than that of known blowers.
ここで、第５図及び第６図に示すグラフによって本発明
に係る送風機の特性を公知の送風機の特性と対比して説
明する。Here, the characteristics of the blower according to the present invention will be explained in comparison with the characteristics of a known blower using graphs shown in FIGS. 5 and 6.
第５図は公知の送風機の特性を示すグラフ、第６図は本
発明に係る送風機の特性を示すグラフである。FIG. 5 is a graph showing the characteristics of a known blower, and FIG. 6 is a graph showing the characteristics of the blower according to the present invention.
第５図及び第６図中、■、Ｉ′は風量と静圧の関係を示
す曲線、■、■′は風量と電流の関係を示す曲線であり
、縦軸は静圧又は電流を示し、横軸は風量を示す。In FIGS. 5 and 6, ■ and I' are curves showing the relationship between air volume and static pressure, ■ and ■' are curves showing the relationship between air volume and current, and the vertical axis represents static pressure or current, The horizontal axis shows the air volume.
従来公知の送風機では、第５図に示す如く、風量を増加
させると、静圧は減少し、これに伴って電流は略一定の
割合で増加する。従って、電流のエネルギは静圧に変換
されるのでなく、風量に変換されていることを示す。In a conventionally known blower, as shown in FIG. 5, when the air volume is increased, the static pressure decreases, and the current increases at a substantially constant rate. This shows that the energy of the current is not converted into static pressure but into air volume.
これに対して、本発明に係る送風機では、第６図に示す
如く、風量を増加させると、静圧は減少し、これに伴っ
て電流は始めは減少するが、図中鎖線で示す一定の風量
値に於て極小となり、その後増加する。On the other hand, in the blower according to the present invention, as shown in FIG. 6, when the air volume increases, the static pressure decreases and the current decreases at first, but at a constant level as shown by the chain line in the figure. It becomes minimum at the air volume value and then increases.
この場合、逆に風量を減少させてゆくと、始めは公知の
送風機の特性と同様に電流は略一定の割合で減少してゆ
くが、図中鎖線で示す一定の風量値に於て極小となり、
その後増加してゆく。このとき静圧は図中鎖線で示す一
定の風量値に於て増加の割合を増してゆく。このことは
、図中鎖線で示す一定の風景値より少ない風景の範囲内
では、電流のエネルギが静圧に変換されていることを示
す。In this case, when the air volume is decreased, the current initially decreases at a nearly constant rate, similar to the characteristics of known blowers, but reaches a minimum at a certain air volume value, indicated by the chain line in the figure. ,
After that, it increases. At this time, the static pressure increases at a constant rate of increase as indicated by the chain line in the figure. This indicates that current energy is converted into static pressure within the range of scenery less than a certain scenery value indicated by the chain line in the figure.
上記のように、本発明に係る送風機の特性は公知の送風
機の特性に比べて、静圧の最大値が大きく、また同じ風
量値に於いても静圧が高く、特に一定の風景値より少な
い風量の範囲に於て大きな静圧が得られるものである。As mentioned above, the characteristics of the blower according to the present invention are that the maximum value of static pressure is larger than the characteristics of known blowers, and the static pressure is also higher even at the same air volume value, especially less than a certain landscape value. A large static pressure can be obtained within a range of air volume.
このことは、本発明に係る送風機を用いれば、これによ
り送り込まれる空気と燃料ガスとが混合され着火される
とき、着火圧に耐えるのに充分な静圧が得られることを
示している。This shows that by using the blower according to the present invention, sufficient static pressure can be obtained to withstand the ignition pressure when the air and fuel gas sent by the blower are mixed and ignited.
また、このため、実際の使用に際して、公知の送風機に
比べて余裕を持って運転することができる。In addition, for this reason, during actual use, the blower can be operated with more leeway than known blowers.
本発明は叙上の如く構成されるから、本発明によるとき
は、インペラから吐き出された気体の一部が戻り気流と
なってそのエネルギを失うことなく、インペラ室からイ
ンペラの吸込口に戻されて再び昇圧され、吐出口から吐
き出される気体の全圧が増加し、ガス炉、重油炉等の燃
焼室に送り込まれた混合気が着火されるとき、その着火
圧に耐えるのに充分な静圧が得られ、且つ、定常燃焼に
必要な量の空気を送り出し、而も、構成が簡単な上、小
型で扱い易い送風機を安価に提供することができる。Since the present invention is configured as described above, according to the present invention, a part of the gas discharged from the impeller becomes a return airflow and is returned from the impeller chamber to the suction port of the impeller without losing its energy. When the mixture is ignited, the total pressure of the gas discharged from the discharge port increases and the mixture is ignited, the static pressure is sufficient to withstand the ignition pressure. It is possible to provide an inexpensive blower that can obtain the desired amount of air, send out the amount of air necessary for steady combustion, and has a simple configuration and is small and easy to handle.
第１図は本発明に係る送風機の一実施例を示す縦断面図
、第２図は第１図中Ａ−Ａ線に沿って切断した断面図、
第３図は昇圧板の形状を示す正面図、第４図はその側面
図、第５図は公知の送風機の特性を示すグラフ、第６図
は本発明に係る送風機の特性を示すグラフである。
１ ’−−− −−−−−−−−・−−−−−−一一−
−−−インペラｌｂ、 １ｃ−−−−−・−一−−−−
−−−−−−シュラウド３−・−・−一−−−・−・−
−ｍ−−−・−・駆動用モータ４−・−−一−−−−−
−−−−−−−・−ケーシング４ａ、４ｂ−−−−−−
−−−−−−−−−−−一側板４ｅ−−−−−−−−・
−−−−−−−−・−・−吐出口５−−−一−−−−−
−・−−−−−−−一一−−−昇圧板５ａ・−一一−−
−−−−−−−−−−−−−−−・・吸入口を構成する
半月状の開口部
５ｂ・・−一−−−−−−−・−−一−−−−−−−−
−仕切板特許出願人 オリンピア工業株式会社代理人
（７５２４）最上正太部
第１図
１
Ａ−←−」
第２図
第３図
第４図
第５図
型砕
流［ｆ・。
型砕
流圧FIG. 1 is a longitudinal sectional view showing an embodiment of a blower according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1,
FIG. 3 is a front view showing the shape of the booster plate, FIG. 4 is a side view thereof, FIG. 5 is a graph showing the characteristics of a known blower, and FIG. 6 is a graph showing the characteristics of the blower according to the present invention. . 1 '−−− −−−−−−−−・−−−−−−11−
--- Impeller lb, 1c ------・-1 ---
−−−−−Shroud 3−・−・−1−−−・−・−
-m----・Drive motor 4-・--1---
-----------Casing 4a, 4b----
−−−−−−−−−−−One side plate 4e−−−−−−−・
−−−−−−−−・−・−Discharge port 5−−−1−−−−−
-・------11---Booster plate 5a・-11---
---------------- −
- Partition plate patent applicant Olympia Kogyo Co., Ltd. Agent (7524) Mogami Shotabe Figure 1 1 A-←-'' Figure 2 Figure 3 Figure 4 Figure 5 Type rupture flow [f. mold crushing flow pressure
Claims (3)
ラ室内に設けたインペラを回転させてこれを昇圧し、吐
出口より吐き出す送風機に於て、上記インペラ室を形成
するケーシングの両側板を上記インペラの一対のシュラ
ウドと近接させ、上記ケーシングの側板にインペラの吸
込口と対向して取り付けられた公知のベルマウスを廃す
ると共に、上記ケーシングの側板に、半月状の開口部と
、上記半月状の開口部の縁辺部からインペラの吸込口内
部に突出する仕切板とを有する昇圧板を設けたことを特
徴とする上記の送風機。(1) In the blower, gas is sucked into the impeller chamber from the suction port, the impeller installed in the impeller chamber is rotated to increase the pressure, and the gas is discharged from the discharge port. The known bell mouth which is close to the pair of shrouds of the impeller and is attached to the side plate of the casing facing the suction port of the impeller is eliminated, and the side plate of the casing is provided with a half-moon-shaped opening and a half-moon-shaped opening. The blower as described above is provided with a pressure booster plate having a partition plate that projects from the edge of the opening into the inside of the suction port of the impeller.
ンペラ幅の２０％以上５０％以下である特許請求の範囲
第１項記載の送風機。(2) The blower according to claim 1, wherein the length of the partition plate protruding into the suction port of the impeller is 20% or more and 50% or less of the width of the impeller.
弧と一致し、且つ、仕切板がケーシングの吐出管中心線
と直交するインペラ中心線と１５度から３０度の角度を
有し、開口部が風切部とは反対側に設けられた特許請求
の範囲第１項又は第２項記載の送風機。(3) The arc of the half-moon-shaped opening matches the arc of the impeller suction port, and the partition plate has an angle of 15 to 30 degrees with the impeller center line, which is perpendicular to the casing's discharge pipe center line. The blower according to claim 1 or 2, wherein the opening is provided on the opposite side of the wind blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7010683A JPS59196997A (en) | 1983-04-22 | 1983-04-22 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7010683A JPS59196997A (en) | 1983-04-22 | 1983-04-22 | Fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59196997A true JPS59196997A (en) | 1984-11-08 |
Family
ID=13421952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7010683A Pending JPS59196997A (en) | 1983-04-22 | 1983-04-22 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59196997A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570996A (en) * | 1994-06-27 | 1996-11-05 | American Standard Inc. | Compact centrifugal fan |
| KR100679137B1 (en) * | 2000-11-07 | 2007-02-05 | 한라공조주식회사 | Blower unit for air conditioner of vehicle |
| US7513741B2 (en) | 2006-03-15 | 2009-04-07 | Trane International Inc. | Fan inlet flow distributor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072204A (en) * | 1973-09-08 | 1975-06-14 |
-
1983
- 1983-04-22 JP JP7010683A patent/JPS59196997A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072204A (en) * | 1973-09-08 | 1975-06-14 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570996A (en) * | 1994-06-27 | 1996-11-05 | American Standard Inc. | Compact centrifugal fan |
| KR100679137B1 (en) * | 2000-11-07 | 2007-02-05 | 한라공조주식회사 | Blower unit for air conditioner of vehicle |
| US7513741B2 (en) | 2006-03-15 | 2009-04-07 | Trane International Inc. | Fan inlet flow distributor |
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