JP2013185737A

JP2013185737A - Blower with silencer box

Info

Publication number: JP2013185737A
Application number: JP2012050055A
Authority: JP
Inventors: Akimasa Uehara; 朗正上原; Daisuke Inoue; 大輔井上
Original assignee: Panasonic Corp
Current assignee: Panasonic Corp
Priority date: 2012-03-07
Filing date: 2012-03-07
Publication date: 2013-09-19
Anticipated expiration: 2032-03-07
Also published as: JP5961817B2

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a conventional blower with a silencer box has two fan units horizontally or vertically arranged in one body when the air quantity is remarkably increased, and in such the blower with the silencer box, maintainability of a plurality of the fan units is poor.SOLUTION: In a blower with a silencer box, two body assemblies 1-1. 1-2 provided with centrifugal fans 9-1, 9-2 respectively are vertically superimposed, and in the body assemblies 1-1. 1-2, a suction side square flange 10 for integrating and joining respective body suction ports 4-1, 4-2 of body assemblies 1-1, 1-2 and a blow-off side square flange 11 for integrating and joining the respective body blow-off ports 5-1, 5-2 are provided. In the body suction ports 4-1, 4-2, air flow guides 15-1, 15-2 are provided, which divide the body suction ports 4-1, 4-2 respectively, which are parallel to rotary shafts 14-1, 14-2 of motors 8-1, 8-2, and by which air flow advances toward the centrifugal fans 9-1, 9-2 from the body suction ports 4-1, 4-2, Thereby, the maintainability is improved and the air quantity is remarkably increased.

Description

本発明は、換気送風機器など消音ボックス内部に送風機を内蔵して使用される消音ボックス付送風機の大風量化構造に関する。 The present invention relates to a structure for increasing the air volume of a blower with a sound deadening box used by incorporating a blower inside a sound deadening box such as a ventilation blower.

従来の消音ボックス付送風機は、風量を大幅に増加する場合、１つの機体の中に２つのファンユニットを水平に配置して、大風量化したものが知られている。（例えば、特許文献１参照）。 A conventional fan with a sound deadening box is known in which two fan units are horizontally arranged in one body to increase the air volume when the air volume is greatly increased. (For example, refer to Patent Document 1).

以下、その従来例について図６を参照しながら説明する。 The conventional example will be described below with reference to FIG.

図６に示すように、機体３０１は互いに相対する二対の側面板３０２および上面板と下面板で構成し、側面板３０２の一方には吸込側ダクト３０３を連結する機体吸込口３０４を設け、他方には吹出側ダクト３０５を連結する機体吹出口３０６を備えている。そして、機体３０１の機体吸込口３０４側の側面板３０２と機体吹出口３０６側の側面板３０２との間を開口部３０７を有する仕切り板３０８で区画している。この仕切り板３０８と、機体吸込口３０４側の側面板３０２の側に設けた位置規制部材３０９との間に、２個の遠心送風機３１１を挟持して並列に固定している。この遠心送風機３１１は、仕切り板３０８の開口部３０７にその吐出口３１０を合わせて位置を定めている。また、遠心送風機３１１は、機体３０１の一方の側面板３０２側に設けたメンテナンス用開口部３１２を介し、位置規制部材３０９を取り外すことにより、手前から順次遠心送風機３１１を取り外すことができる。 As shown in FIG. 6, the airframe 301 is composed of two pairs of side plates 302 facing each other and an upper surface plate and a lower surface plate, and one of the side surface plates 302 is provided with a body air inlet 304 for connecting the suction side duct 303. The other is provided with a machine body outlet 306 for connecting the outlet duct 305. A partition plate 308 having an opening 307 divides the side plate 302 on the side of the body inlet 304 of the body 301 and the side plate 302 on the side of the body outlet 306. Two centrifugal fans 311 are sandwiched and fixed in parallel between the partition plate 308 and a position restricting member 309 provided on the side plate 302 side on the machine body suction port 304 side. The centrifugal blower 311 is positioned by aligning the discharge port 310 with the opening 307 of the partition plate 308. Further, the centrifugal blower 311 can remove the centrifugal blower 311 sequentially from the front by removing the position restricting member 309 through the maintenance opening 312 provided on the one side plate 302 side of the body 301.

このような消音ボックス付送風機は、２つの遠心送風機３１１を運転すると、機体３０１の内部で遠心送風機３１１の２個分の風量が合流して、大きな風量を得ることができている。 When such a blower with a silencer box operates two centrifugal fans 311, the air volume of two centrifugal fans 311 merges inside the airframe 301, and a large air volume can be obtained.

そして、一般的に、機体３０１内部で２つの遠心送風機３１１の負荷を均等にして、並列に対称な構造となっているがゆえに、メンテナンス時にはメンテナンス用開口部３１２から近い遠心送風機３１１−１の運転確認だけでなく、その遠心送風機３１１を取り外すことで、奥側の遠心送風機３１１−２の運転の確認が必要とされている構造である。 In general, the load of the two centrifugal fans 311 is equalized in the airframe 301 and the structure is symmetrical in parallel. Therefore, the operation of the centrifugal fan 311-1 close to the maintenance opening 312 is performed during maintenance. Not only the confirmation but also the removal of the centrifugal blower 311 makes it necessary to confirm the operation of the centrifugal blower 311-2 on the back side.

実開昭６１−１２７３３５号公報Japanese Utility Model Publication No. 61-127335

このような従来の消音ボックス付送風機では、底板に設けたメンテナンス用開口部３１２から、上側に設けた遠心送風機３１１−２をメンテナンスするときには、下側の遠心送風機３１１−１を取り外す必要がある。このように、１つの天井点検口からのメンテナンス作業性が悪いといった課題があった。 In such a conventional fan with a sound deadening box, when maintaining the centrifugal fan 311-2 provided on the upper side from the maintenance opening 312 provided on the bottom plate, it is necessary to remove the lower centrifugal fan 311-1. Thus, there existed a subject that the maintenance workability from one ceiling inspection port was bad.

本発明は、このような従来の課題を解決するものであり、モータ直結駆動の遠心送風機を内蔵した複数の機体アッシーを上下方向に天面と底面を重ね合わせ、メンテナンス性を向上させるとともに、吸込み部分の構造を工夫することで吸込気流が連結部分へ衝突することによる圧力損失を抑え、施工性とメンテナンス性をよくしながら大風量化できる消音ボックス付送風機を提供することを目的とする。 The present invention solves such a conventional problem, and a plurality of airframe assemblies with built-in centrifugal blowers that are directly connected to a motor are superposed on top and bottom in the vertical direction to improve maintainability and suction. An object of the present invention is to provide a blower with a sound deadening box that can suppress the pressure loss caused by the suction airflow colliding with the connecting part by devising the structure of the part and can increase the air volume while improving the workability and maintainability.

本発明の消音ボックス付送風機は、上記目的を達成するために、
機体吸込口と機体吹出口を対向して設けた箱状の機体の内部に、羽根車をモータにより直結駆動する遠心送風機を備えたものを１つの機体アッシーとして、
２個の前記機体アッシーの一方の機体アッシーのモータの回転軸と平行な面がもう他方の機体アッシーのモータの回転軸と平行な面と対向するよう上下２段に重ね合わせ、
この重ね合わせた部分を機体連結部とし、
２個の前記機体アッシーの機体吸込口と機体吹出口をそれぞれ一体化して吸込側ダクト、吹出側ダクトと接続し、
それぞれの前記機体吸込口には、前記ダクト内の気流方向と平行で、機体吸込口に流入する気流を前記遠心送風機へ向かう気流へと偏向させる気流ガイドを設けたものである。 In order to achieve the above object, the fan with a sound deadening box of the present invention,
Inside the box-shaped airframe provided with the airframe inlet and the airflow outlet facing each other, a centrifugal fan that directly drives the impeller by a motor is provided as one airframe assembly.
Two planes are superposed in two upper and lower stages so that the plane parallel to the rotation axis of the motor of one of the plane assemblies faces the plane parallel to the rotation axis of the motor of the other plane assembly.
This overlapped part is used as the fuselage connecting part,
The airframe suction port and airframe air outlet of the two airframe assemblies are integrated and connected to the suction side duct and the air outlet side duct,
Each of the airframe suction ports is provided with an airflow guide that is parallel to the airflow direction in the duct and deflects the airflow flowing into the airframe suction port to the airflow toward the centrifugal blower.

本発明によれば、
機体吸込口と機体吹出口を対向して設けた箱状の機体の内部に、羽根車をモータにより直結駆動する遠心送風機を備えたものを１つの機体アッシーとして、
２個の前記機体アッシーの一方の機体アッシーのモータの回転軸と平行な面がもう他方の機体アッシーのモータの回転軸と平行な面と対向するよう上下２段に重ね合わせ、
この重ね合わせた部分を機体連結部とし、
２個の前記機体アッシーの機体吸込口と機体吹出口をそれぞれ一体化して吸込側ダクト、吹出側ダクトと接続し、
それぞれの前記機体吸込口には、前記ダクト内の気流方向と平行で、機体吸込口に流入した気流を前記遠心送風機へ向かう気流へと偏向させる気流ガイドを設けた
構成としたことにより、
機体連結部へ衝突し、上側の機体アッシーの天面側と下側の機体アッシーの底面側に向かう気流へと分流された吸込気流を気流ガイドにより遠心送風機に向かう気流へと方向を変え、遠心送風機までスムーズに導くことができる。従って、吸込気流が機体連結部へ衝突するときに生じる圧力損失を抑えることができるという作用を有するので、施工性とメンテナンス性を良化しながら、大風量化することができるという効果のある消音ボックス付送風機を提供することができる。 According to the present invention,
Inside the box-shaped airframe provided with the airframe inlet and the airflow outlet facing each other, a centrifugal fan that directly drives the impeller by a motor is provided as one airframe assembly.
Two planes are superposed in two upper and lower stages so that the plane parallel to the rotation axis of the motor of one of the plane assemblies faces the plane parallel to the rotation axis of the motor of the other plane assembly.
This overlapped part is used as the fuselage connecting part,
The airframe suction port and airframe air outlet of the two airframe assemblies are integrated and connected to the suction side duct and the air outlet side duct,
Each airframe inlet is provided with an airflow guide that is parallel to the airflow direction in the duct and deflects the airflow flowing into the airframe inlet to the airflow toward the centrifugal blower.
Collides with the fuselage connection, changes the direction of the suction airflow divided into the airflow toward the top side of the upper airframe assembly and the bottom surface of the lower airframe assembly to the airflow toward the centrifugal blower by the airflow guide, It can guide smoothly to the blower. Therefore, it has the effect of suppressing the pressure loss that occurs when the suction airflow collides with the fuselage connection part, so the sound deadening box has the effect of increasing the air volume while improving the workability and maintainability. An attached blower can be provided.

本発明の実施の形態１の消音ボックス付送風機の側面図The side view of the air blower with a silencer box of Embodiment 1 of this invention 同消音ボックス付送風機の平面図Top view of the blower with the sound deadening box 同消音ボックス付送風機の設置状態を表す側面図Side view showing the installation state of the blower with the sound deadening box 気流ガイドの有無による風量の比較グラフComparison graph of airflow with and without airflow guide 本発明の実施の形態２の消音ボックス付送風機の側面図Side view of fan with silencer box according to embodiment 2 of the present invention 従来の消音ボックス付送風機の平面図Plan view of a conventional fan with a sound deadening box

本発明の請求項１記載の消音ボックス付送風機は、
機体吸込口と機体吹出口を対向して設けた箱状の機体の内部に、羽根車をモータにより直結駆動する遠心送風機を備えたものを１つの機体アッシーとして、
２個の前記機体アッシーの一方の機体アッシーのモータの回転軸と平行な面がもう他方の機体アッシーのモータの回転軸と平行な面と対向するよう上下２段に重ね合わせ、
この重ね合わせた部分を機体連結部とし、
２個の前記機体アッシーの機体吸込口と機体吹出口をそれぞれ一体化して吸込側ダクト、吹出側ダクトと接続し、
それぞれの前記機体吸込口には、前記ダクト内の気流方向と平行で、機体吸込口に流入した気流を前記遠心送風機へ向かう気流へと偏向させる気流ガイドを設けた構成としたものであり、
機体連結部へ衝突し、上側の機体アッシーの天面側と下側の機体アッシーの底面側に向かう気流へと分流された吸込気流を気流ガイドにより遠心送風機に向かう気流へと方向を変え、遠心送風機までスムーズに導くことができ、吸込気流が機体連結部へ衝突するときに生じる圧力損失を抑えることができるという作用を有する。 A blower with a sound deadening box according to claim 1 of the present invention,
Inside the box-shaped airframe provided with the airframe inlet and the airflow outlet facing each other, a centrifugal fan that directly drives the impeller by a motor is provided as one airframe assembly.
Two planes are superposed in two upper and lower stages so that the plane parallel to the rotation axis of the motor of one of the plane assemblies faces the plane parallel to the rotation axis of the motor of the other plane assembly.
This overlapped part is used as the fuselage connecting part,
The airframe suction port and airframe air outlet of the two airframe assemblies are integrated and connected to the suction side duct and the air outlet side duct,
Each of the airframe inlets is provided with an airflow guide that is parallel to the airflow direction in the duct and deflects the airflow that has flowed into the airframe inlet to the airflow toward the centrifugal blower,
Collides with the fuselage connection, changes the direction of the suction airflow divided into the airflow toward the top side of the upper airframe assembly and the bottom surface of the lower airframe assembly to the airflow toward the centrifugal blower by the airflow guide, It can be smoothly guided to the blower and has an effect of suppressing the pressure loss that occurs when the suction airflow collides with the fuselage connecting portion.

また、前記気流ガイドは、平板であることを特徴としたものであり、機体連結部で分流されず直接機体吸込口に到達する吸込気流が気流ガイドに衝突ときに生じる圧力損失を抑えながら、分流された吸込気流を遠心送風機に向かう気流へと方向を変えることができるという作用を有する。 Further, the airflow guide is a flat plate, and the airflow guide that is not shunted at the airframe connecting portion directly reaches the airframe suction port while suppressing the pressure loss that occurs when the airflow guide collides with the airflow guide. It has the effect | action that a direction can be changed to the airflow which went to the centrifugal air blower.

また、前記気流ガイドは、それぞれの前記機体吸込口を二分割することを特徴としたものであり、機体吸込口と同じ幅の機体連結部に衝突して分流される吸込気流を幅方向に全体的遠心送風機に向かう気流へと偏向させることができ、圧力損失を抑えることができるという作用を有する。 Further, the airflow guide is characterized in that each of the airframe suction ports is divided into two, and the entire airflow in the width direction is divided into the airflow that is shunted by colliding with the airframe connecting portion having the same width as the airframe suction port. It is possible to deflect the air flow toward the centrifugal fan and to suppress the pressure loss.

また、前記気流ガイドは、それぞれの前記機体吸込口の上下方向の中央から機体吸込口の反機体連結部側の端までの間に配置したものであり、分流された吸込気流を効率よくスムーズに偏向でき、気流ガイドに気流が衝突することで生じる圧力損失を抑えると共に、気流ガイドの内部遠心送風機側に向う長さ寸法が小さい場合においても偏向の効果を得ることができる。また、吸込気流が速く、機体連結部への衝突により上側の機体アッシーの天面側と下側の機体アッシーの底面側に向かう気流へと大きく膨らんで分流された吸込気流においても遠心送風機に向かう気流へと方向を変えることができるという作用を有する。 In addition, the airflow guide is disposed between the center of each of the airframe suction ports in the vertical direction to the end of the airframe suction port on the side opposite to the airframe connecting portion, and the divided airflow can be efficiently and smoothly supplied. In addition to suppressing pressure loss caused by the collision of the airflow with the airflow guide, the effect of deflection can be obtained even when the length of the airflow guide toward the internal centrifugal fan is small. Also, the suction airflow is fast, and the suction airflow that is greatly inflated into the airflow toward the top side of the upper airframe assembly and the bottom surface side of the lower airframe assembly due to the collision with the airframe connecting part is also directed to the centrifugal blower It has the effect that the direction can be changed to an air current.

また、一方の機体アッシー内の羽根車の回転方向が、もう他方の機体アッシーの羽根車の回転方向と一致するよう配置した構成としたものであり、２個の機体アッシーのモータを同一面側に配置することができ、１つの天井点検口からモータを取り出しやすくなるという作用を有する。 In addition, the configuration is such that the rotation direction of the impeller in one fuselage assembly is aligned with the rotation direction of the impeller of the other fuselage assembly, and the motors of the two fuselage assemblies are arranged on the same side. It has the effect | action that it becomes easy to take out a motor from one ceiling inspection port.

また、機体吸込口側の２個の機体アッシーの連結部分に吸音材を貼り付ける構成としたものであり、
吸込気流が機体連結部へ衝突することで発生する気流騒音を低減することができるといった作用を有する。 In addition, the sound absorbing material is attached to the connecting portion of the two airframe assemblies on the airframe inlet side,
The airflow noise generated by the suction airflow colliding with the airframe connecting portion can be reduced.

以下、本発明の実施の形態について、図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施の形態１）
図１および図２に示すように、本実施の形態の消音ボックス付送風機は、
２個の機体アッシー１−１、１−２を上下に重ね合わせた構成である。機体アッシー１−１、１−２は、それぞれ機体吸込口４−１、４−２と機体吹出口５−１、５−２を対向して設けた箱状の機体６−１，６−２を有している。機体６−１、６−２の内部には、羽根車７−１、７−２をモータ８−１、８−２により直結駆動する遠心送風機９−１、９−２を備えている。そして、機体アッシー１−１、１−２は、一方の機体天面２−２と他方の機体底面３−１を対向して重ね合わせるよう結合している。この重ね合わせた部分を機体連結部２５と呼ぶ。そして、遠心送風機９−１、９−２は、一方の羽根車７−１の回転方向が、他方の羽根車７−２の回転方向と一致するように機体アッシー１−１、１−２を上下２段に重ね合せている。 (Embodiment 1)
As shown in FIGS. 1 and 2, the blower with a sound deadening box of the present embodiment is
It is the structure which piled up the two airframe assemblies 1-1 and 1-2 up and down. Airframe assemblies 1-1 and 1-2 are box-shaped airframes 6-1 and 6-2 provided with airframe inlets 4-1 and 4-2 and air outlets 5-1 and 5-2, respectively. have. Inside the airframes 6-1 and 6-2, centrifugal blowers 9-1 and 9-2 that directly drive the impellers 7-1 and 7-2 by motors 8-1 and 8-2 are provided. The airframe assemblies 1-1 and 1-2 are coupled so that one airframe top surface 2-2 and the other airframe bottom surface 3-1 face each other. This overlapped portion is referred to as an airframe connecting portion 25. Then, the centrifugal blowers 9-1 and 9-2 move the body assemblies 1-1 and 1-2 so that the rotation direction of one impeller 7-1 coincides with the rotation direction of the other impeller 7-2. It is superposed in two upper and lower stages.

機体アッシー１−１、１−２には各機体吸込口４−１、４−２を一体化し合流する吸込側角フランジ１０と、各機体吹出口５−１、５−２を一体化し合流する吹出側角フランジ１１を備えている。吸込側角フランジ１０には吸込側ダクト１２が接続され、吹出側角フランジ１１には吹出側ダクト１３が接続されている。吸込側角フランジ１０は、機体連結部３０に正対、すなわち、吹出側ダクト１３から流れ込む気流が機体連結部３０に衝突するように配置されている。各機体吸込口４−１、４−２には機体吸込口４−１、４−２をそれぞれ分割する気流ガイド１５−１、１５−２を備えている。この気流ガイド１５−１、１５−２は、各機体吸込口４−１、４−２を上下（回転軸１４−１、１４−２と直交する方向）に分割する平板である。さらに、気流ガイド１５−１、１５−２は、モータ８−１、８−２の回転軸１４−１、１４−２とほぼ平行で、かつ、吸込側ダクト１２内（あるいは吹出側ダクト１３内）を流れる気流の方向に平行な面を有している。すなわち、気流ガイド１５−１、１５−２によって、機体吸込口４−１、４−２に流入した気流は、遠心送風機９−１、９−２に向かうことになる。 The airframe inlets 1-1 and 1-2 are integrated with the air intake side flanges 4-1 and 4-2, and the air outlets 5-1 and 5-2 are integrated and joined. A blower side corner flange 11 is provided. A suction side duct 12 is connected to the suction side square flange 10, and a blow side duct 13 is connected to the blow side square flange 11. The suction-side angular flange 10 is arranged so as to face the airframe connecting portion 30, that is, the airflow flowing from the blowout side duct 13 collides with the airframe connecting portion 30. Airframe guides 15-1 and 15-2 for dividing the airframe suction ports 4-1 and 4-2 are provided in the airframe suction ports 4-1 and 4-2, respectively. The airflow guides 15-1 and 15-2 are flat plates that divide the airframe suction ports 4-1 and 4-2 vertically (in a direction perpendicular to the rotation shafts 14-1 and 14-2). Further, the airflow guides 15-1 and 15-2 are substantially parallel to the rotation shafts 14-1 and 14-2 of the motors 8-1 and 8-2 and in the suction side duct 12 (or in the blowout side duct 13). ) Has a plane parallel to the direction of the airflow flowing through. That is, the airflow that has flowed into the airframe inlets 4-1 and 4-2 by the airflow guides 15-1 and 15-2 is directed to the centrifugal blowers 9-1 and 9-2.

このような消音ボックス付送風機は、図３に示すように、天井裏１６において吸込側角フランジ１０に吸込側ダクト１２、吹出側角フランジ１１に吹出側ダクト１３を接続して施工される。連結された２個の機体アッシー１−１、１−２は、吸込側に機体吸込口４−１、４−２、吹出側に機体吹出口５−１、５−２、機体アッシー１−１、１−２の内部に遠心送風機９−１、９−２、外面に施工用吊金具１７を配している。連結された２個の機体アッシー１−１、１−２は天井面１８に埋め込まれた吊ボルト１９に施工用吊金具１７を固定することで、天井裏１６に設置される。そして、内部の遠心送風機９−１、９−２を運転すると、室内２０の空気が吸込側ダクト１２、遠心送風機９−１、９−２を介して吹出側ダクト１３を通過し、室外２１に排気される。天井裏１６と室内２０は天井材２２で仕切られ、天井材２２には、連結された２個の機体アッシー１−１、１−２の直下となるところに天井点検口２３を備えている。 As shown in FIG. 3, such a blower with a sound deadening box is constructed by connecting a suction side duct 12 to the suction side angular flange 10 and a blower side duct 13 to the blower side angular flange 11 in the ceiling 16. The two airframe assemblies 1-1 and 1-2 connected to each other include airframe inlets 4-1 and 4-2 on the suction side, airframe outlets 5-1 and 5-2 on the blowout side, and airframe assembly 1-1. The centrifugal blowers 9-1 and 9-2 are disposed inside 1-2, and the construction hanging bracket 17 is disposed on the outer surface. The two airframe assemblies 1-1 and 1-2 connected to each other are installed on the ceiling 16 by fixing the construction hanging bracket 17 to the suspension bolt 19 embedded in the ceiling surface 18. When the internal centrifugal blowers 9-1 and 9-2 are operated, the air in the room 20 passes through the blow-out duct 13 via the suction duct 12 and the centrifugal blowers 9-1 and 9-2, and enters the outdoor 21. Exhausted. The ceiling back 16 and the room 20 are partitioned by a ceiling material 22, and the ceiling material 22 is provided with a ceiling inspection port 23 immediately below the two connected airframe assemblies 1-1 and 1-2.

上記構成による作用・効果について説明する。遠心送風機９−１、９−２のモータ８−１、８−２を駆動して回転させた羽根車７−１、７−２により発生させた吸込気流２４は、吸込側ダクト１２を通り、機体アッシー１−１と機体アッシー１−２の機体連結部２５に衝突する。衝突した吸込気流２４は、上側の機体アッシー１−１の天面２−１側に向う吸込気流２４−１と下側の機体アッシー１−２の機体底面３−２側に向う吸込気流２４−２へと分流され、各機体吸込口４−１、４−２を経由して、各機体アッシー１−１、１−２内部に流入する。機体アッシー１−１、１−２内部に流入した気流は遠心送風機９−１、９−２を介して、各機体吹出口５−１、５−２より吹出側ダクト１３に排出さる。吹出側ダクト１３に排出された気流は吹出側ダクト１３内で一体化される。 The operation and effect of the above configuration will be described. The suction airflow 24 generated by the impellers 7-1 and 7-2 rotated by driving the motors 8-1 and 8-2 of the centrifugal blowers 9-1 and 9-2 passes through the suction side duct 12, It collides with the airframe connecting portion 25 of the airframe assembly 1-1 and the airframe assembly 1-2. The collided suction airflow 24 is a suction airflow 24-1 toward the top surface 2-1 of the upper body assembly 1-1 and a suction airflow 24- toward the body bottom surface 3-2 of the lower body assembly 1-2. 2 and flows into the airframe assemblies 1-1 and 1-2 via the airframe inlets 4-1 and 4-2. The airflow that has flowed into the airframe assemblies 1-1 and 1-2 is discharged from the airframe outlets 5-1 and 5-2 to the outlet duct 13 through the centrifugal fans 9-1 and 9-2. The airflow discharged to the blowout duct 13 is integrated in the blowout duct 13.

ここで、本実施の形態の最も特徴的な部分について説明する。吸込側ダクト１２から吸い込まれた吸込気流２４は、機体アッシー１−１と機体アッシー１−２の機体連結部２５に衝突し、上側の機体アッシー１−１の天面２−１側に向う吸込気流２４−１と下側の機体アッシー１−２の機体底面３−２側に向かう吸込気流２４−２へと分流される。そして、この分流された吸込気流２４−１、吸込気流２４−２は、気流ガイド１５−１、１５−２によって遠心送風機９−１、９−２の吸込口２６−１、２６−２に向かう気流へと方向を変えられる。偏向された気流は、遠心送風機９−１、９−２から排出される気流の方向、すなわち機体６−１、６−２内の気流の方向と遠心送風機９−１、９−２の吸込口２６−１、２６−２に向う気流の方向と一致する。従って、機体アッシー１−１、１−２内の気流は、吸込口２６−１、２６−２までスムーズに導かれることになる。 Here, the most characteristic part of the present embodiment will be described. The suction airflow 24 sucked from the suction duct 12 collides with the airframe connecting portion 25 of the airframe assembly 1-1 and the airframe assembly 1-2, and sucks toward the top surface 2-1 side of the upper airframe assembly 1-1. The airflow 24-1 and the lower airframe assembly 1-2 are divided into the suction airflow 24-2 toward the airframe bottom surface 3-2 side. The diverted suction airflow 24-1 and suction airflow 24-2 are directed to the suction ports 26-1 and 26-2 of the centrifugal blowers 9-1 and 9-2 by the airflow guides 15-1 and 15-2. The direction can be changed to an air current. The deflected airflow is the direction of the airflow discharged from the centrifugal blowers 9-1 and 9-2, that is, the direction of the airflow in the airframes 6-1 and 6-2 and the suction ports of the centrifugal blowers 9-1 and 9-2. This coincides with the direction of the airflow toward 26-1, 26-2. Therefore, the airflow in the body assemblies 1-1 and 1-2 is smoothly guided to the suction ports 26-1 and 26-2.

なお、この気流ガイド１５−１、１５−２は、それぞれの機体吸込口４−１、４−２の上下方向の中央から機体吸込口４−１、４−２の機体連結部２５とは反対側の端までの間に配置されている。すなわち、機体連結部２５で分流された吸込気流２４−１、２４−２が上側の機体アッシー１−１の天面２−１側と下側の機体アッシー１−２の機体底面３−２側に向う方向の延長線上に配置されており、吸込気流２４−１、２４−２が気流ガイドの下面（もしくは上面）にあたり、遠心送風機９−１、９−２側にスムーズに偏向できる。それにより気流ガイド１５−１、１５−２に吸込気流２４−１、２４−２が衝突することで生じる圧力損失を抑えるとともに、気流ガイド１５−１、１５−２の遠心送風機９−１、９−２側に向う長さ寸法が小さい場合においても偏向の効果を得ることができることとなる。また、吸込気流２４の風速が速く、機体連結部２５への衝突により大きく膨らんで分流された場合においても遠心送風機９−１、９−２に向かう気流へと方向を変えることができる。 The airflow guides 15-1 and 15-2 are opposite to the machine body connection portions 25 of the machine body suction ports 4-1 and 4-2 from the center in the vertical direction of the respective machine body suction ports 4-1 and 4-2. It is arranged between the side ends. That is, the suction airflows 24-1 and 24-2 divided by the airframe connecting portion 25 are the top surface 2-1 side of the upper airframe assembly 1-1 and the airframe bottom surface 3-2 side of the lower airframe assembly 1-2. The suction airflows 24-1 and 24-2 hit the lower surface (or upper surface) of the airflow guide and can be smoothly deflected toward the centrifugal blowers 9-1 and 9-2. This suppresses pressure loss caused by the suction airflows 24-1 and 24-2 colliding with the airflow guides 15-1 and 15-2, and the centrifugal fans 9-1 and 9 of the airflow guides 15-1 and 15-2. Even when the length dimension toward the -2 side is small, the effect of deflection can be obtained. Moreover, even when the wind velocity of the suction airflow 24 is high and the airflow is greatly expanded due to the collision with the machine body connecting portion 25, the direction can be changed to the airflow toward the centrifugal blowers 9-1 and 9-2.

また、気流ガイド１５−１、１５−２は、各機体吸込口４−１、４−２を上下（回転軸１４−１、１４−２と直交する方向）に分割する平板としている。従って、機体連結部２５で分流されずに直接機体吸込口４−１、４−２に到達する吸込気流２４は、気流ガイド１５−１、１５−２に沿って流れて、圧力損失を抑える。さらに、気流ガイド１５−１、１５−２は、機体吸込口４−１、４−２と同じ幅なので、機体連結部２５に衝突して分流される吸込気流２４は、幅方向に全体的に遠心送風機９−１、９−２に向かう気流へと偏向させることができる。 Moreover, the airflow guides 15-1 and 15-2 are flat plates that divide the airframe inlets 4-1 and 4-2 vertically (in a direction orthogonal to the rotation shafts 14-1 and 14-2). Therefore, the suction airflow 24 that reaches the airframe suction ports 4-1 and 4-2 directly without being diverted by the airframe connection unit 25 flows along the airflow guides 15-1 and 15-2 and suppresses pressure loss. Furthermore, since the airflow guides 15-1 and 15-2 have the same width as the airframe suction ports 4-1 and 4-2, the airflow airflow 24 that collides with the airframe connection unit 25 and is divided is totally in the width direction. It is possible to deflect the air flow toward the centrifugal blowers 9-1 and 9-2.

図４に気流ガイドの有無による風量の比較グラフを示す。気流ガイド１５−１、１５−２がない場合では、連結部分への気流の衝突による吸込気流の乱れにより、各機体アッシーの風量を単独で測定して、足した２台分の風量（＝達成可能風量）を満足していない。一方、気流ガイド１５−１、１５−２を設けた場合には２台分の風量が出ていることが確認できる。 FIG. 4 shows a comparison graph of the air volume with and without the airflow guide. In the absence of the airflow guides 15-1 and 15-2, the airflow of each airframe assembly is independently measured due to the disturbance of the suction airflow caused by the collision of the airflow to the connecting portion, and the airflow for the two units added (= achieved) The possible air volume is not satisfied. On the other hand, when the airflow guides 15-1 and 15-2 are provided, it can be confirmed that the air volume for two units is output.

このように本発明の実施の形態１の消音ボックス付送風機によれば、ベルトやインバータを不要とし、また２個の送風機とも１つの天井点検口に近い位置に配置でき、羽根車やモータのメンテナンス作業がしやすくなるので、メンテナンス性を向上させながら大風量化することができる。 As described above, according to the blower with the sound deadening box according to the first embodiment of the present invention, a belt and an inverter are not necessary, and both the two blowers can be arranged at a position close to one ceiling inspection port, and maintenance of the impeller and the motor is performed. Since the work becomes easier, the air volume can be increased while improving the maintainability.

また、２個の機体アッシー１−１、１−２内の各羽根車７−１、７−２の回転方向を同一方向とすることで、モータ８−１、８−２を同一面側に配置することができ、メンテナンス時に１つの天井点検口２３から各モータ８−１、８−２を取り出しやすくなる。 In addition, the motors 8-1 and 8-2 are placed on the same surface side by rotating the impellers 7-1 and 7-2 in the two airframe assemblies 1-1 and 1-2 in the same direction. It can arrange | position and it becomes easy to take out each motor 8-1 and 8-2 from one ceiling inspection opening 23 at the time of a maintenance.

なお、本実施の形態では機体アッシー１−１、１−２それぞれに遠心送風機９−１、９−２を１台ずつ備えているが、複数台備えても作用効果に差違はない。 In the present embodiment, each of the airframe assemblies 1-1 and 1-2 is provided with one centrifugal blower 9-1 and 9-2.

気流ガイド１５−１、１５−２は、各機体吸込口４−１、４−２にそれぞれ１枚設ければよい。また、気流ガイド１５−１、１５−２の気流方向（吸込側ダクト１２内（あるいは吹出側ダクト１３内）を流れる気流の方向）の長さは、分流した気流を遠心送風機９−１、９−２方向に整流する長さがあればよく、実験的には、機体吸込口４−１、４−２から遠心送風機９−１、９−２のケーシングまでの１／３程度の長さを有するとガイドとしての効果が発揮された。 One airflow guide 15-1 and 15-2 may be provided at each of the airframe inlets 4-1 and 4-2. The length of the airflow direction of the airflow guides 15-1 and 15-2 (the direction of the airflow flowing in the suction side duct 12 (or the blowout side duct 13)) is the same as that of the centrifugal blowers 9-1 and 9 As long as there is a length to rectify in the -2 direction, experimentally, a length of about 1/3 from the air inlets 4-1 and 4-2 to the casings of the centrifugal fans 9-1 and 9-2 When it had, the effect as a guide was exhibited.

（実施の形態２）
図５では、機体アッシー１−１と機体アッシー１−２の機体連結部２５に吸音材２７を貼り付けたものを示している。 (Embodiment 2)
In FIG. 5, the thing which affixed the sound absorption material 27 to the body connection part 25 of the body assembly 1-1 and the body assembly 1-2 is shown.

上記構成による作用・効果について説明する。気流の流れに関しては、実施の形態１で説明した通りである。本実施の形態では、吸音材２７により、吸込気流２４が機体連結部２５へ衝突することにより発生する気流騒音を低減できることとなる。また吸音材２７により、吸込気流２４が分流する位置を各機体吸込口４−１、４−２から遠ざけることができる。すなわち気流ガイド１５−１、１５−２と分流する位置との距離を確保できることとなり、分流された気流の乱れや風速を整流させてから気流ガイド１５−１、１５−２に当てることができる。それにより気流ガイド１５−１、１５−２による方向変換の効果をより得やすくすることができ、遠心送風機９−１、９−２と各機体吸込口４−１、４−２の距離が近い場合においても風量を確保できることとなる。 The operation and effect of the above configuration will be described. The airflow is the same as described in the first embodiment. In the present embodiment, the sound absorbing material 27 can reduce the air flow noise generated when the suction air flow 24 collides with the machine body connecting portion 25. Further, the sound absorbing material 27 can keep the position where the suction airflow 24 is diverted away from the airframe suction ports 4-1 and 4-2. That is, the distance between the airflow guides 15-1 and 15-2 and the position to be diverted can be secured, and the turbulence of the diverted airflow and the wind speed can be rectified before being applied to the airflow guides 15-1 and 15-2. Thereby, the effect of the direction change by the airflow guides 15-1 and 15-2 can be more easily obtained, and the distance between the centrifugal blowers 9-1 and 9-2 and the respective body suction ports 4-1 and 4-2 is short. Even in this case, the air volume can be secured.

このように本発明の実施の形態２の消音ボックス付送風機によれば、吸込騒音を低減できるとともに、機器を小型化しながら大風量化することができる。 Thus, according to the blower with a silencing box according to the second embodiment of the present invention, the suction noise can be reduced, and the air volume can be increased while downsizing the device.

換気送風機器などの空気搬送目的以外に、機体吹出口からの送風を用いて設備機器の冷却ができる設備機器の送風の用途にも適用できる。 In addition to the purpose of air conveyance such as ventilation blower equipment, the present invention can also be applied to the use of air blowing of equipment equipment that can cool equipment equipment using air blown from the air outlet.

１−１機体アッシー
１−２機体アッシー
４−１機体吸込口
４−２機体吸込口
５−１機体吹出口
５−２機体吹出口
８−１モータ
８−２モータ
９−１遠心送風機
９−２遠心送風機
１０吸込側角フランジ
１１吹出側角フランジ
１４−１回転軸
１４−２回転軸
１５−１気流ガイド
１５−２気流ガイド 1-1 Airframe assembly 1-2 Airframe assembly 4-1 Airframe inlet 4-2 Airframe inlet 5-1 Airframe outlet 5-2 Airframe outlet 8-1 Motor 8-2 Motor 9-1 Centrifugal blower 9-2 Centrifugal blower 10 Suction side square flange 11 Blow side square flange 14-1 Rotating shaft 14-2 Rotating shaft 15-1 Airflow guide 15-2 Airflow guide

Claims

Inside the box-shaped airframe provided with the airframe inlet and the airflow outlet facing each other, a centrifugal fan that directly drives the impeller by a motor is provided as one airframe assembly.
Two planes are superposed in two upper and lower stages so that the plane parallel to the rotation axis of the motor of one of the plane assemblies faces the plane parallel to the rotation axis of the motor of the other plane assembly.
This overlapped part is used as the fuselage connecting part,
The airframe suction port and airframe air outlet of the two airframe assemblies are integrated and connected to the suction side duct and the air outlet side duct,
A blower with a sound deadening box provided with an airflow guide at each of the airframe suction ports, which is parallel to the airflow direction in the duct and deflects the airflow flowing into the airframe suction port to the airflow toward the centrifugal blower.

The fan according to claim 1, wherein the airflow guide is a flat plate.

The blower with a muffler box according to claim 1 or 2, wherein the airflow guide divides each airframe inlet into two.

4. The blower with a sound deadening box according to claim 1, wherein the airflow guide is disposed between a center in a vertical direction of each of the airframe suction ports and an end of the airframe suction port on the side opposite to the airframe connecting portion.

The blower with a sound deadening box according to claim 1, wherein the blower is arranged so that a rotation direction of an impeller in one fuselage assembly coincides with a rotation direction of an impeller of the other fuselage assembly.

The blower with a sound deadening box according to any one of claims 1 to 5, wherein a sound absorbing material is attached to a connecting portion of two airframe assemblies on the airframe inlet side.