JP2014084771A - Transverse flow blower and indoor unit for air conditioner using the same - Google Patents

Transverse flow blower and indoor unit for air conditioner using the same Download PDF

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JP2014084771A
JP2014084771A JP2012233398A JP2012233398A JP2014084771A JP 2014084771 A JP2014084771 A JP 2014084771A JP 2012233398 A JP2012233398 A JP 2012233398A JP 2012233398 A JP2012233398 A JP 2012233398A JP 2014084771 A JP2014084771 A JP 2014084771A
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stabilizer
side wall
cross flow
flow
vicinity
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Kensho Yamamoto
憲昭 山本
Koichi Sakai
浩一 酒井
Tomoki Morikawa
智貴 森川
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit for an air conditioner with high air volume performance and low noise.SOLUTION: A transverse flow blower is configured in such a manner that the radius of a tongue part 4R2 dividing a suction part and a blow out part of a stabilizer 4 in the vicinity of a side wall forming a ventilation passage is made to be larger than the radius of a stabilizer tongue part 4R1 at a center part, and a surface connecting an end surface of the suction part adjacent to a crossflow fan 3 in the vicinity of the side wall and the stabilizer tongue part is made to be longer than that in the center part. Thereby, a configuration can be achieved in which, at the center part, where the wind speed is fast and the flow is stable, an air passage configured by the stabilizer and a rear guider can be secured to the maximum, while in the vicinity of the side wall, where the wind speed is slow and the flow is unstable, static pressure is improved and the flow is stabilized; therefore, both improvement of air volume performance and reduction of noise involved in a burble of the flow in the vicinity of the side wall can be achieved.

Description

本発明は、横断流送風機とそれを用いた空気調和機の室内ユニットに関する。   The present invention relates to a cross flow blower and an indoor unit of an air conditioner using the same.

一般に横断流送風機は空気調和機の室内ユニットに多用されている。図９は従来の横断流送風機が用いられている空気調和機の室内ユニットを示す断面図、図１０は同室内ユニットの側壁近傍の部分斜視図である。   In general, a cross flow blower is widely used in an indoor unit of an air conditioner. FIG. 9 is a cross-sectional view showing an indoor unit of an air conditioner in which a conventional cross-flow fan is used, and FIG. 10 is a partial perspective view in the vicinity of the side wall of the indoor unit.

この横断流送風機を用いた室内ユニットは、複数のブレード１０１から成るクロスフローファン１０２とその周囲に配置されたリアガイダ１０３とスタビライザ１０４とで空気の通風路が形成される。また前記クロスフローファン１０２の回転軸の垂直方向に配設された左右２個の側壁１０５により、軸方向の通風路を制約する。   In the indoor unit using the cross flow blower, an air ventilation path is formed by the cross flow fan 102 including a plurality of blades 101, the rear guider 103 and the stabilizer 104 arranged around the cross flow fan 102. In addition, the right and left side walls 105 disposed in the direction perpendicular to the rotation axis of the cross flow fan 102 restrict the axial ventilation path.

空気の流れは、空気調和機であれば吸い込みグリル１０６、フィルター１０７及び熱交換器１０８を通過してクロスフローファン１０２に流れ込む。さらにリアガイダ１０３とスタビライザ１０４と側壁１０５で形成された通風路（ディフュザー）１０９を通過して、送風機の吹き出し部から放出される。   In the case of an air conditioner, the air flow passes through the suction grill 106, the filter 107 and the heat exchanger 108 and flows into the cross flow fan 102. Further, the air passes through a ventilation passage (diffuser) 109 formed by the rear guider 103, the stabilizer 104, and the side wall 105, and is discharged from the blowout portion of the blower.

上記のような構成を有する横断流送風機において、クロスフローファン１０２から吹き出される流れは、通風路（ディフュザー）１０９のクロスフローファン１０２の軸方向の中央部では２次元流れが形成されているが、側壁１０５の近傍では流体の粘性により２次元流れがくずれている。そのため、側壁１０５の近傍では流れの変動成分が増大して騒音上昇につながるという課題を有している。   In the cross flow blower having the above-described configuration, the flow blown out from the cross flow fan 102 is formed as a two-dimensional flow in the central portion in the axial direction of the cross flow fan 102 of the ventilation path (diffuser) 109. In the vicinity of the side wall 105, the two-dimensional flow is broken due to the viscosity of the fluid. Therefore, in the vicinity of the side wall 105, there is a problem that the fluctuation component of the flow increases, leading to an increase in noise.

また、空気調和機などについては、熱交換器１０８およびフィルター１０７の抵抗により流速が失速して側壁１０５の近傍でさらに２次元流れがくずれる。そのために、剥離が断続的に発生して非定常な流れとなり、クロスフローファン１０２の流量性能も大きく減少し、さらには騒音上昇にもつながるという課題を有している。   In addition, for an air conditioner or the like, the flow velocity is stalled due to the resistance of the heat exchanger 108 and the filter 107, and the two-dimensional flow is further disrupted near the side wall 105. For this reason, separation occurs intermittently, resulting in an unsteady flow, and there is a problem that the flow performance of the cross flow fan 102 is greatly reduced and further noise is increased.

そこで、出願人は、図１０に示すように、クロスフローファン１０２の吹き出し部から送風機の吹き出し部の通風路（ディフュザー）１０９において徐々にクロスフローファン１０２の回転軸方向の通風路を縮小するように側壁形状を変化させて、側壁１０５近傍での流れの剥離を抑制し、流れを安定化させることで騒音の低減を図ることを提案している（例えば、特許文献１参照）。   Therefore, as shown in FIG. 10, the applicant gradually reduces the ventilation path in the rotational axis direction of the crossflow fan 102 from the blowing section of the crossflow fan 102 to the ventilation path (diffuser) 109 of the blowing section of the blower. It has been proposed to reduce the noise by changing the side wall shape to suppress the separation of the flow in the vicinity of the side wall 105 and stabilize the flow (for example, see Patent Document 1).

特許第３３０７１１７号公報Japanese Patent No. 3307117

しかしながら、前記特許文献１に示す構成では、低風量運転時の異音発生には効果的である一方、形状によっては特に高能力運転時のような大風量条件下においては、通風路の大きな抵抗となり、クロスフローファンの動力であるファンモータの消費電力が増大してしまうという課題があった。   However, the configuration shown in Patent Document 1 is effective in generating abnormal noise during low airflow operation, but depending on the shape, particularly under large airflow conditions such as during high capacity operation, the resistance of the ventilation path is large. Thus, there is a problem that the power consumption of the fan motor, which is the power of the cross flow fan, increases.

本発明は、前記従来の課題を解決するもので、スタビライザの形状をクロスフローファ
ンの軸方向に対して適切に変化させることで、側壁近傍での騒音を低減させると共に風量性能を向上させ、省エネルギー性能の高い横断流送風機とそれを用いた空気調和機の室内ユニットを提供することを目的とする。 The present invention solves the above-described conventional problems, and by appropriately changing the shape of the stabilizer with respect to the axial direction of the crossflow fan, noise near the side wall is reduced and air flow performance is improved, thereby saving energy. An object of the present invention is to provide a high-performance cross-flow blower and an indoor unit of an air conditioner using the same.

上記目的を達成するために、本発明は、一定の長さを有する複数のブレードを円柱状に配列した羽根車単体を回転軸方向に組み合わせてなるクロスフローファンと、このクロスフローファンに近接・対向して位置するスタビライザと、通風路を形成するリアガイダと、前記クロスフローファンの回転軸の垂直方向に配置された側壁と、を有し、前記側壁近傍の前記スタビライザの吸込み部と吹出し部を分ける舌部の半径を中央部のスタビライザ舌部の半径より大きくし、かつ前記側壁近傍の前記クロスフローファンに近接する吸込み部端面とスタビライザ舌部を繋ぐ面を中央部のそれより長くなる構成としてある。   In order to achieve the above object, the present invention provides a cross flow fan in which a plurality of blades having a certain length are arranged in a columnar shape and combined with a single impeller in the rotation axis direction, A stabilizer positioned oppositely, a rear guider that forms a ventilation path, and a side wall disposed in a direction perpendicular to a rotation axis of the cross flow fan, and a suction portion and a discharge portion of the stabilizer in the vicinity of the side wall. The radius of the separating tongue is larger than the radius of the stabilizer tongue at the center, and the surface connecting the end surface of the suction portion adjacent to the cross flow fan near the side wall and the stabilizer tongue is longer than that of the center. is there.

これにより、風速が速く、流れが安定している中央部ではスタビライザとリアガイダで構成される風路を最大限に確保できる一方、風速が遅く、流れが不安定な側壁近傍では静圧を向上させ、流れを安定させる構成が可能となるので、風量性能の向上と側壁近傍の流れの剥離に伴う騒音の低減の両立が実現できる。また、スタビライザを構成するブロックのみで完結できるため、現行品のスタビライザブロック、即ち一部の金型の新作もしくは改造で対応が可能であり、少ない投資額で騒音を低減した省エネルギー性能の高い横断流送風機とそれを用いた空気調和機の室内ユニットを提供することができる。   As a result, the wind path composed of the stabilizer and rear guider can be secured to the maximum in the center where the wind speed is fast and the flow is stable, while the static pressure is improved near the side wall where the wind speed is slow and the flow is unstable. Since a structure that stabilizes the flow is possible, it is possible to achieve both improvement in air flow performance and reduction in noise accompanying separation of the flow in the vicinity of the side wall. In addition, because it can be completed with only the blocks that make up the stabilizer, it can be handled with the current stabilizer block, that is, with new or modified parts of some molds. An indoor unit of a blower and an air conditioner using the blower can be provided.

本発明によれば、スタビライザの変更のみで流れの主流となる中央部および側壁近傍の風量性能を向上させると共に、側壁近傍の剥離を抑制することで流れを安定させ、騒音の低減を図ることが出来る。これにより、金型等の設備投資を最小限に抑えた上で省エネルギー性の高い横断流送風機とそれを用いた空気調和機の室内ユニット等を提供することができる。   According to the present invention, it is possible to improve the air flow performance near the central portion and the side wall, which becomes the main flow only by changing the stabilizer, and stabilize the flow by reducing separation near the side wall, thereby reducing noise. I can do it. Accordingly, it is possible to provide a cross-flow blower with high energy saving performance and an indoor unit of an air conditioner using the same while minimizing capital investment such as a mold.

本発明の実施の形態１に係る横断流送風機を用いた空気調和機の室内ユニットを示す斜視図The perspective view which shows the indoor unit of the air conditioner using the crossflow fan which concerns on Embodiment 1 of this invention. 同室内ユニットの断面図Cross section of the indoor unit 同室内ユニットの吹き出し口（横断流送風機要部）の拡大断面図Enlarged cross-sectional view of the outlet of the indoor unit (main section of the cross-flow fan) 同室内ユニットの吹き出し口（横断流送風機要部）の右側壁近傍の斜視図Perspective view of the vicinity of the right side wall of the outlet of the indoor unit (the main part of the cross-flow fan) 同室内ユニットの吹き出し口（横断流送風機要部）のスタビライザを同吹き出し口の上面壁に平行な角度よりみた平面図The top view which looked at the stabilizer of the outlet (the cross flow blower principal part) of the indoor unit from the angle parallel to the upper surface wall of the outlet 同室内ユニットの吹き出し口（横断流送風機要部）を同吹き出し口の上面壁に垂直な角度よりみた平面図The top view which looked at the outlet (cross flow fan main part) of the indoor unit from the angle perpendicular to the upper surface wall of the outlet 同室内ユニットの吹き出し口（横断流送風機要部）中央部と形状の異なる右側壁近傍のスタビライザの軸方向長さと風量との関係を示した特性図Characteristic diagram showing the relationship between the axial length of the stabilizer and the air volume near the right side wall, which has a different shape from the center of the outlet (the main part of the cross-flow fan) 同室内ユニットの吹き出し口（横断流送風機要部）中央部のスタビライザの上面壁と側壁近傍のスタビライザの上面壁を繋ぐ面の角度と風量との関係を示した特性図Characteristic diagram showing the relationship between the air flow rate and the angle of the surface connecting the upper surface wall of the stabilizer in the center of the indoor unit outlet (cross flow fan main part) and the upper surface wall of the stabilizer near the side wall 従来の横断流送風機を用いた空気調和機の空気調和ユニットを示す断面図Sectional drawing which shows the air conditioning unit of the air conditioner using the conventional crossflow fan 同従来の室内ユニットの側壁近傍の部分斜視図Partial perspective view near the side wall of the conventional indoor unit

第１の発明は、一定の長さを有する複数のブレードを円柱状に配列した羽根車単体を回転軸方向に組み合わせてなるクロスフローファンと、このクロスフローファンに近接・対向して位置するスタビライザと、通風路を形成するリアガイダと、前記クロスフローファンの回転軸の垂直方向に配置された側壁と、を有し、前記側壁近傍の前記スタビライザの
吸込み部と吹出し部を分ける舌部の半径を中央部のスタビライザ舌部の半径より大きくし、かつ前記側壁近傍の前記クロスフローファンに近接する吸込み部端面とスタビライザ舌部を繋ぐ面を中央部のそれより長くなるように構成したものである。 A first aspect of the present invention is a cross flow fan formed by combining a single impeller in which a plurality of blades having a certain length are arranged in a columnar shape in the direction of the rotation axis, and a stabilizer positioned close to and opposed to the cross flow fan. And a rear guider that forms a ventilation path, and a side wall that is arranged in a direction perpendicular to the rotation axis of the cross flow fan, and the radius of the tongue that separates the suction portion and the blowout portion of the stabilizer in the vicinity of the side wall. The radius is larger than the radius of the stabilizer tongue at the center, and the surface connecting the end of the suction portion adjacent to the cross flow fan near the side wall and the stabilizer tongue is longer than that at the center.

このような構成とすることで、風速が速く、流れが安定している中央部ではスタビライザとリアガイダで構成される風路を最大限に確保できる一方、風速が遅く、流れが不安定な側壁近傍では静圧を向上させ、流れを安定させる構成が可能となるので、風量性能の向上と側壁近傍の流れの剥離に伴う騒音の低減の両立が実現できる。また、スタビライザを構成するブロックのみで完結できるため、現行品のスタビライザブロック、即ち一部の金型の新作もしくは改造で対応が可能であり、少ない投資額で騒音を低減した省エネルギー性能の高い横断流送風機を提供することができる。   By adopting such a configuration, the central part where the wind speed is fast and the flow is stable can secure the maximum air path composed of the stabilizer and the rear guider, while the wind speed is slow and the side of the sidewall where the flow is unstable. Since it is possible to improve the static pressure and stabilize the flow, it is possible to achieve both the improvement of the air flow performance and the reduction of noise caused by the separation of the flow near the side wall. In addition, because it can be completed with only the blocks that make up the stabilizer, it can be handled with the current stabilizer block, that is, with new or modified parts of some molds. A blower can be provided.

第２の発明は、特に、第１の発明において、前記側壁近傍のスタビライザ舌部から本体吹き出し口端面を繋ぐ上面壁を中央部のそれより前記リアガイダ側に配置した構成としてある。   According to a second aspect of the present invention, in particular, in the first aspect of the present invention, an upper surface wall connecting the stabilizer tongue near the side wall and the end face of the main body outlet is disposed on the rear guider side from that of the central portion.

このような構成とすることで、側壁近傍の静圧を向上させ、流れの剥離を更に抑制できるので、特に騒音低減を図った風量性能の高い横断流送風機を実現することができる。   By adopting such a configuration, the static pressure in the vicinity of the side wall can be improved and the flow separation can be further suppressed, so that it is possible to realize a cross-flow blower with high air volume performance that particularly reduces noise.

第３の発明は、特に、第１〜２の発明において、前記中央部と異なる左右側壁近傍の形状の軸方向長さをＬ、前記クロスフローファンの半径をＲとした場合、下記の式を満たす構成としてある。
Ｒ／５≦Ｌ≦３Ｒ
このような構成とすることで、スタビライザとリアガイダで構成される風路を広くとり、風量の大きい中央部の領域を適切に確保できると共に側壁近傍の流れを安定させる領域を適切に確保できるため、特に騒音低減を図った風量性能の高い横断流送風機を提供することができる。 In particular, in the first and second aspects of the invention, when the axial length of the shape near the left and right side walls is different from L and the radius of the cross flow fan is R, It is as composition to satisfy.
R / 5 ≦ L ≦ 3R
By adopting such a configuration, it is possible to widen the air path composed of the stabilizer and the rear guider, and to appropriately secure the area of the central portion where the air volume is large and to appropriately secure the area that stabilizes the flow near the side wall, In particular, it is possible to provide a cross-flow blower with high air volume performance that reduces noise.

第４の発明は、特に、第１〜３の発明において、前記側壁近傍のスタビライザと中央部のスタビライザの段差を滑らかな面で繋ぐ構成としてある。   In a fourth aspect of the invention, in particular, in the first to third aspects of the invention, the step between the stabilizer in the vicinity of the side wall and the stabilizer in the central portion is connected with a smooth surface.

このような構成とすることで、スタビライザ段差部分での流れの剥離を抑制し、特に騒音低減を図った風量性能の高い横断流送風機を提供することができる。   By adopting such a configuration, it is possible to provide a cross flow blower with high air volume performance that suppresses separation of the flow at the stabilizer step portion and particularly reduces noise.

第５の発明は、特に、第１〜４の発明において、前記側壁近傍のスタビライザと中央部のスタビライザの段差を繋ぐ滑らかな面の傾斜を、中央部のスタビライザの面の稜線と、前記側壁近傍のスタビライザと中央部のスタビライザの段差を繋ぐ面の稜線の成す角度が平均６０度以下となる構成としてある。   In particular, in the first to fourth inventions, the fifth invention is characterized in that the slope of the smooth surface connecting the step between the stabilizer in the vicinity of the side wall and the stabilizer in the central part, the ridge line of the surface of the stabilizer in the central part, and the vicinity of the side wall The angle formed by the ridgeline of the surface connecting the step between the stabilizer and the stabilizer in the center is an average of 60 degrees or less.

このような構成とすることで、スタビライザ段差部分での流れの剥離を更に抑制し、特に騒音低減を図った風量性能の高い横断流送風機を提供することができる。   By adopting such a configuration, it is possible to provide a cross flow blower with high air volume performance that further suppresses separation of the flow at the step portion of the stabilizer and particularly reduces noise.

第６の発明は、室内ユニット本体の吸込み口と吹き出し口との間に熱交換器と前記第１〜第５の発明のいずれかに記載の横断流送風機を組み込んだ空気調和機の室内ユニットであり、第１の発明の横断流送風機と同様、風量性能の向上と側壁近傍の流れの剥離に伴う騒音の低減の両立が実現でき、しかも少ない投資額で騒音を低減した省エネルギー性能の高い空気調和機の室内ユニットを提供することができる。   6th invention is an indoor unit of the air conditioner which incorporated the heat exchanger and the crossflow fan in any one of the said 1st-5th invention between the suction inlet and the blower outlet of the indoor unit main body. Yes, as with the cross-flow blower of the first aspect of the invention, it is possible to achieve both air flow performance improvement and noise reduction due to flow separation near the side wall, and high energy-saving air conditioning that reduces noise with a small investment amount An indoor unit of the machine can be provided.

（実施の形態１）
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。なお、この実施の
形態によって本発明が限定されるものではない。 (Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

図１は本発明の実施の形態１に係る横断流送風機を搭載した空気調和機の室内ユニットの斜視図であり、図２は同室内ユニットの断面図である。   1 is a perspective view of an indoor unit of an air conditioner equipped with a cross flow fan according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view of the indoor unit.

図１、図２において、空気調和機の室内ユニット本体１は、吸込み口１０と熱交換器２と吹き出し口１１とクロスフローファン３とを備え、クロスフローファン３を運転して吸込み口１０より室内の空気を取り入れ、熱交換器２で熱交換された空気を吹き出し口１１より吹き出す。   1 and 2, the indoor unit body 1 of the air conditioner includes a suction port 10, a heat exchanger 2, a blowout port 11, and a crossflow fan 3, and operates the crossflow fan 3 from the suction port 10. The room air is taken in, and the air heat-exchanged by the heat exchanger 2 is blown out from the air outlet 11.

横断流送風機の要部となるクロスフローファン３から吹き出し口１１までの通風路１３においては、クロスフローファン３の前面側に近接した部分で回転軸方向に延設されたスタビライザ４と、スタビライザ４から吹き出し方向に形成された上面壁４ａと、クロスフローファン３の背面側から吹き出し口１１にかけて下面壁を形成するリアガイダ５と、左右の側壁１２（図４、図５等参照）とを備え、更に室内ユニットとして必要な、断面が略円弧状で、吹き出し空気の上下方向の向きを制御する上下羽根６とを備えている。   In the ventilation path 13 from the cross flow fan 3 to the outlet 11 which is a main part of the cross flow fan, a stabilizer 4 extending in the rotation axis direction at a portion close to the front side of the cross flow fan 3, and the stabilizer 4 An upper surface wall 4a formed in the blowing direction, a rear guider 5 forming a lower surface wall from the back side of the cross flow fan 3 to the blowing port 11, and left and right side walls 12 (see FIG. 4, FIG. 5, etc.), Furthermore, it is provided with upper and lower blades 6 that are necessary for the indoor unit and that have a substantially circular cross section and control the vertical direction of the blown air.

図３は吹き出し口１１（横断流送風機要部）の拡大断面図である。本実施の形態では、側壁近傍のスタビライザ４の吸込み部と吹出し部を分ける舌部４Ｒ２の半径を、中央部のスタビライザ４の吸込み部と吹出し部を分ける舌部４Ｒ１の半径の２倍とし、側壁近傍のクロスフローファン３に近接する吸込み部端面とスタビライザ舌部を繋ぐ面Ｌ２の長さを、中央部のクロスフローファン３に近接する吸込み部端面とスタビライザ舌部を繋ぐ面Ｌ１より長くなるように構成している。   FIG. 3 is an enlarged cross-sectional view of the blowout port 11 (the main part of the cross flow fan). In the present embodiment, the radius of the tongue portion 4R2 that separates the suction portion and the blowout portion of the stabilizer 4 in the vicinity of the side wall is set to be twice the radius of the tongue portion 4R1 that separates the suction portion and the blowout portion of the central stabilizer 4. The length of the surface L2 connecting the suction portion end face and the stabilizer tongue near the crossflow fan 3 in the vicinity is longer than the surface L1 connecting the suction portion end surface and the stabilizer tongue near the crossflow fan 3 in the center. It is configured.

本構成とすることで、風速が速く、流れが安定している中央部ではスタビライザ４とリアガイダ５で構成される通風路１３を最大限に確保する一方、風速が遅く、流れが不安定な側壁近傍では静圧を向上させ、流れを安定させることが可能となり、風量性能の向上と側壁近傍の流れの剥離に伴う騒音の低減の両立が実現できる。   By adopting this configuration, the central portion where the wind speed is fast and the flow is stable ensures the maximum ventilation path 13 composed of the stabilizer 4 and the rear guider 5, while the wind speed is slow and the sidewall is unstable. In the vicinity, the static pressure can be improved and the flow can be stabilized, so that it is possible to achieve both the improvement of the air flow performance and the reduction of noise accompanying the separation of the flow in the vicinity of the side wall.

また、本実施の形態では、側壁近傍のスタビライザ４の舌部４Ｒ２から本体吹き出し口端面を繋ぐ上面壁４ａ２を、中央部のスタビライザ４の舌部４Ｒ１から本体吹き出し口端面を繋ぐ上面壁４ａ１より前記リアガイダ５側に配置している。   Further, in the present embodiment, the upper wall 4a2 that connects the tongue 4R2 of the stabilizer 4 near the side wall to the main body outlet end surface is connected to the upper wall 4a1 that connects the tongue 4R1 of the central stabilizer 4 to the main body outlet end surface. Arranged on the rear guider 5 side.

本構成とすることで、側壁近傍の静圧を向上させるとともに、側壁近傍のスタビライザ４の舌部４Ｒ２に衝突した空気が吹き出し口１１にかけて流れる際の剥離を抑制し、更なる騒音低減と風量性能の向上を図っている。   By adopting this configuration, the static pressure in the vicinity of the side wall is improved, and separation when the air colliding with the tongue 4R2 of the stabilizer 4 in the vicinity of the side wall flows toward the outlet 11 is suppressed, further noise reduction and air flow performance. We are trying to improve.

図７は本実施の形態において、クロスフローファン３を同一回転数に固定し、中央部と形状の異なる右側壁近傍のスタビライザ４の軸方向長さＬ３（図５参照）を変化させた場合の風量を示す。ここでＲはクロスフローファン３の半径である。   FIG. 7 shows a case where the cross flow fan 3 is fixed at the same rotational speed and the axial length L3 (see FIG. 5) of the stabilizer 4 in the vicinity of the right side wall having a different shape from the central portion is changed in the present embodiment. Indicates air volume. Here, R is the radius of the cross flow fan 3.

本構成では横断流送風機となる室内ユニットの吹き出し口右側壁近傍にフィルター自動掃除機能のノズル収納スペース（図示せず）を確保しているため、特に右側側壁近傍で通風抵抗が高く、Ｌ＝１．３Ｒで風量性能がピークとなる。一方比較的通風抵抗の低い左側壁近傍では風量特性図は図示しないが、Ｌ＝０．７Ｒで風量性能がピークとなり、通風抵抗の大きさに応じて、中央部と異なる左右側壁近傍のスタビライザ形状の軸方向長さＬを下記式の範囲で適宜調整すると風量特性が良いものとなる。
Ｒ／５≦Ｌ≦３Ｒ
また、近年、省エネルギー性能向上のため、本実施の形態の図２に示すように熱交換パイプが３列から４列以上で構成されるなど、熱交換器の高効率化のために通風抵抗が増大
する傾向にあるが、この様な場合には側壁近傍の静圧向上が必要となる。そのため、中央の主風路部の風量性能向上と側壁近傍の静圧向上の両立を実現可能な本発明は、近年の省エネルギー性の高い空気調和機に特に有効である。 In this configuration, since a nozzle storage space (not shown) for the automatic filter cleaning function is secured in the vicinity of the right side wall of the blowout port of the indoor unit serving as the cross flow fan, the ventilation resistance is particularly high near the right side wall, L = 1 The airflow performance reaches a peak at 3R. On the other hand, although the airflow characteristic diagram is not shown in the vicinity of the left side wall with relatively low ventilation resistance, the airflow performance peaks at L = 0.7R, and the stabilizer shape near the left and right side walls differs from the central part depending on the magnitude of the ventilation resistance. When the axial length L is appropriately adjusted within the range of the following formula, the air flow characteristics are improved.
R / 5 ≦ L ≦ 3R
Further, in recent years, in order to improve energy saving performance, as shown in FIG. 2 of the present embodiment, the heat exchange pipe is composed of three to four rows or more. In such a case, it is necessary to improve the static pressure near the side wall. Therefore, the present invention capable of realizing both the improvement in the air volume performance of the central main air passage section and the improvement in the static pressure in the vicinity of the side wall is particularly effective for the recent air conditioners with high energy savings.

また、本実施の形態では、側壁近傍のスタビライザ４の舌部４Ｒ２から本体吹き出し口端面を繋ぐ上面壁４ａ２と、中央部のスタビライザ４の舌部４Ｒ１から本体吹き出し口端面を繋ぐ上面壁４ａ１とを繋ぐ面４ｂを、図４〜図６に示すように、滑らかな面で繋ぐ構成としている。   Further, in the present embodiment, an upper surface wall 4a2 that connects the tongue 4R2 of the stabilizer 4 near the side wall to the main body outlet end surface, and an upper wall 4a1 that connects the tongue 4R1 of the central stabilizer 4 to the main body outlet end surface. As shown in FIGS. 4 to 6, the connecting surface 4 b is configured to connect with a smooth surface.

図４に吹き出し口１１（横断流送風機要部）の右側壁近傍を斜め下からみた斜視図を、図５に同吹き出し口１１（横断流送風機要部）のスタビライザ４を上面壁４ａ１に平行な角度よりみた平面図を、図６に同吹き出し口（横断流送風機要部）を上面壁４ａ１に垂直な角度より見た平面図を示す。   FIG. 4 is a perspective view of the vicinity of the right side wall of the outlet 11 (cross flow fan main part) viewed obliquely from below, and FIG. 5 shows the stabilizer 4 of the outlet 11 (cross flow fan main part) parallel to the upper surface wall 4a1. FIG. 6 shows a plan view seen from an angle, and FIG. 6 shows a plan view of the outlet (cross flow fan main part) seen from an angle perpendicular to the top wall 4a1.

本構成とすることで、スタビライザ段差部分での流れの剥離を抑制し、特に騒音低減を図った風量性能の高い空気調和機の室内ユニットを実現している。   By adopting this configuration, an indoor unit of an air conditioner with high air volume performance that suppresses flow separation at a stabilizer step portion and particularly reduces noise is realized.

図８に本実施の形態においてクロスフローファン３を同一回転数に固定し、スタビライザ４の上面壁４ａ１と４ａ２を繋ぐ面４ｂと４ａ１のなす角度Ｄ１（図５参照）を変化させた場合の風量を示す。Ｄ１が９０度、即ち上面壁４ａ１と４ａ２が段状である形態の風量を１００％とした場合、本実施の形態では角度の縮小と共に風量性能が向上し、Ｄ１が２５度で風量性能がピークとなる。Ｄ１については舌部４Ｒ１と４Ｒ２の段差の高さ等に応じて適宜選択可能であるが、段差部分の流れの剥離を抑制するため、平均６０度以下で構成することが好ましい。   FIG. 8 shows the air flow when the cross flow fan 3 is fixed at the same rotational speed and the angle D1 (see FIG. 5) formed by the surfaces 4b and 4a1 connecting the upper surface walls 4a1 and 4a2 of the stabilizer 4 is changed. Indicates. When D1 is 90 degrees, that is, when the air volume of the form in which the top walls 4a1 and 4a2 are stepped is 100%, in this embodiment, the air volume performance improves as the angle decreases, and the air volume performance peaks at D1 of 25 degrees. It becomes. About D1, it can select suitably according to the height of the level | step difference of tongue part 4R1 and 4R2, etc., In order to suppress peeling of the flow of a level | step-difference part, it is preferable to comprise at an average of 60 degrees or less.

また、本実施の形態では前記角度Ｄ１を全面ほぼ一定で構成しており、本構成により、段差部分での流れの剥離を更に抑制することが可能となる。   Further, in the present embodiment, the angle D1 is configured to be substantially constant over the entire surface. With this configuration, it is possible to further suppress the flow separation at the step portion.

なお、本実施の形態においては、空気調和機の室内ユニットに搭載した横断流送風機を例に説明したが、空気清浄機等の各種機器及びクロスフローファンおよびケーシングで構成される横断流送風機全般に適用でき、特に側壁近傍で通風抵抗の高い送風機に有用である。   In addition, in this Embodiment, although the crossflow fan mounted in the indoor unit of an air conditioner was demonstrated to the example, various apparatuses, such as an air cleaner, and a crossflow fan comprised with a crossflow fan and a casing in general It is applicable to a blower with high ventilation resistance, particularly in the vicinity of the side wall.

本発明は、クロスフローファンを用いた横断流送風機において、主流となる中央部および側壁近傍の風量性能を向上させると共に、側壁近傍の剥離を抑制することで流れを安定させ、騒音の低減を図ることが出来るため、空気調和機の室内ユニットやクロスフローファンを用いた送風機全般に有用である。   The present invention, in a cross flow fan using a cross flow fan, improves the air flow performance near the central portion and the side wall, which is the mainstream, and stabilizes the flow by suppressing separation near the side wall, thereby reducing noise. Therefore, it is useful for air conditioners indoor units and general blowers using cross flow fans.

１ 室内ユニット本体
２ 熱交換器
３ クロスフローファン
４ スタビライザ
４ａ、４ａ１、４ａ２ スタビライザの上面壁
４ｂ スタビライザ段差部を繋ぐ面
４Ｒ１、４Ｒ２ スタビライザの舌部
５ リアガイダ
６ 上下羽根
１０ 吸込み口
１１ 吹き出し口
１２ 側壁
１３ 通風路 DESCRIPTION OF SYMBOLS 1 Indoor unit main body 2 Heat exchanger 3 Cross flow fan 4 Stabilizer 4a, 4a1, 4a2 Upper surface wall of a stabilizer 4b Surface which connects a stabilizer level | step difference part 4R1, 4R2 Stabilizer tongue 5 Rear guider 6 Upper and lower blades 10 Air inlet 11 Air outlet 12 Side wall 13 Ventilation path

Claims (6)

一定の長さを有する複数のブレードを円柱状に配列した羽根車単体を回転軸方向に組み合わせてなるクロスフローファンと、このクロスフローファンに近接・対向して位置するスタビライザと、通風路を形成するリアガイダと、前記クロスフローファンの回転軸の垂直方向に配置された側壁と、を有し、前記側壁近傍の前記スタビライザの吸込み部と吹出し部を分ける舌部の半径を中央部のスタビライザ舌部の半径より大きくし、かつ前記側壁近傍の前記クロスフローファンに近接する吸込み部端面とスタビライザ舌部を繋ぐ面を中央部のそれより長くなるように構成したことを特徴とする横断流送風機。 Forms a cross flow fan that combines a single impeller with a plurality of blades having a certain length arranged in a columnar shape in the direction of the axis of rotation, a stabilizer that is positioned close to and opposite this cross flow fan, and a ventilation path A rear guider, and a side wall disposed in a direction perpendicular to the rotation axis of the cross flow fan, and a stabilizer tongue portion having a central portion with a radius of a tongue portion separating the suction portion and the blowout portion of the stabilizer in the vicinity of the side wall portion The cross-flow blower is characterized in that the surface connecting the end surface of the suction portion close to the cross flow fan near the side wall and the stabilizer tongue is longer than that of the central portion. 側壁近傍のスタビライザ舌部から本体吹き出し口端面を繋ぐ上面壁を中央部のそれよりリアガイダ側に配置したことを特徴とする請求項１に記載の横断流送風機。 The cross flow blower according to claim 1, wherein an upper surface wall connecting the stabilizer tongue portion in the vicinity of the side wall and the end face of the main body outlet is arranged on the rear guider side from that of the central portion. 中央部と異なる左右側壁近傍の形状の軸方向長さをＬ、クロスフローファンの半径をＲとした場合、下記の式を満たすように構成したことを特徴とする請求項１または２に記載の横断流送風機。
Ｒ／５≦Ｌ≦３Ｒ 3. The structure according to claim 1, wherein when the axial length of the shape near the left and right side walls different from the central portion is L and the radius of the cross flow fan is R, the following formula is satisfied. Cross flow blower.
R / 5 ≦ L ≦ 3R 側壁近傍のスタビライザと中央部のスタビライザの段差を滑らかな面で繋いだことを特徴とする請求項１乃至３のいずれか１項に記載の横断流送風機。 The cross flow blower according to any one of claims 1 to 3, wherein a level difference between the stabilizer near the side wall and the stabilizer in the central portion is connected by a smooth surface. 側壁近傍のスタビライザと中央部のスタビライザの段差を繋ぐ滑らかな面の傾斜を、中央部のスタビライザの面の稜線と、前記側壁近傍のスタビライザと中央部のスタビライザの段差を繋ぐ面の稜線の成す角度が平均６０度以下となるように構成したことを特徴とする請求項１乃至４のいずれか１項に記載の横断流送風機。 The slope of the smooth surface that connects the step between the stabilizer near the side wall and the center stabilizer, the angle between the ridge line of the surface of the center stabilizer and the ridge line of the surface that connects the step between the stabilizer near the side wall and the center stabilizer The cross flow blower according to any one of claims 1 to 4, characterized in that the average is 60 degrees or less. 室内ユニット本体の吸込み口と吹き出し口との間に熱交換器と請求項１〜５のいずれか１項に記載の横断流送風機を組み込んだ空気調和機の室内ユニット。 The indoor unit of the air conditioner which incorporated the heat exchanger and the crossflow fan of any one of Claims 1-5 between the suction inlet and the blower outlet of the indoor unit main body.
JP2012233398A 2012-10-23 2012-10-23 Transverse flow blower and indoor unit for air conditioner using the same Pending JP2014084771A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114439773A (en) * 2022-01-05 2022-05-06 东风柳州汽车有限公司 Water pump structure and engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002195595A (en) * 2000-12-22 2002-07-10 Daikin Ind Ltd Indoor machine for air conditioner
JP2004028487A (en) * 2002-06-27 2004-01-29 Fujitsu General Ltd Air conditioner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002195595A (en) * 2000-12-22 2002-07-10 Daikin Ind Ltd Indoor machine for air conditioner
JP2004028487A (en) * 2002-06-27 2004-01-29 Fujitsu General Ltd Air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114439773A (en) * 2022-01-05 2022-05-06 东风柳州汽车有限公司 Water pump structure and engine
CN114439773B (en) * 2022-01-05 2023-07-18 东风柳州汽车有限公司 Water pump structure and engine

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