JP2005299432A - Blower and air conditioner - Google Patents

Blower and air conditioner Download PDF

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JP2005299432A
JP2005299432A JP2004113812A JP2004113812A JP2005299432A JP 2005299432 A JP2005299432 A JP 2005299432A JP 2004113812 A JP2004113812 A JP 2004113812A JP 2004113812 A JP2004113812 A JP 2004113812A JP 2005299432 A JP2005299432 A JP 2005299432A
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side wall
air
blower
suction port
wall portion
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Masahiro Shin
正廣 新
Yoshikimi Tazumi
欣公 田積
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a blower of low operation noise and excellent in blower performance. <P>SOLUTION: A mixed flow impeller 12a including a plurality of blades 2, a motor 3 driving and rotating the mixed flow impeller 12a and an air guider 13 including a suction port 41 and provided around the mixed flow impeller 12a are provided. The air guider 13 consists of a suction side wall part 42 positioned on the suction side of the suction port 41, a blow out side wall part 43 positioned on the blow out side of the suction port 41, and a partition wall part 44 extendingly provided in a direction perpendicularly crossing an axial direction of the suction port 41 from an end part of the blow out side wall part 43. Cross section of the suction side wall part 42 is formed in a shape roughly semi-spherically bending toward radial direction outward from an inner circumference surface of the suction port 41. Collision of air at the suction side wall part 42 is relaxed and separation of air is suppressed, the blower of low operation noise and high blower performance can be provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、送風機並びにそれを用いた空気調和機に関するものである。   The present invention relates to a blower and an air conditioner using the blower.

従来のこの種の送風機について図３、図４を用いて説明する。   A conventional blower of this type will be described with reference to FIGS.

図３は、空気調和機等に一般的に使用される送風機の断面図である。   FIG. 3 is a cross-sectional view of a blower generally used for an air conditioner or the like.

図において、送風機１０は、複数の翼２を備えたファン本体１と、ファン本体１を回転駆動すると共に支持フレーム５に支持されるモータ３を備えている。ファン本体１の外周側には前記各翼２の周囲を近接状態で囲むような吸い込み口４１を備えたベルマウス４が配置されている。   In the figure, the blower 10 includes a fan main body 1 having a plurality of blades 2 and a motor 3 that rotationally drives the fan main body 1 and is supported by a support frame 5. On the outer peripheral side of the fan body 1, a bell mouth 4 having a suction port 41 that surrounds each blade 2 in a close state is disposed.

このベルマウス４の吸い込み口４１は、前記モータ３側に位置する吸い込み側壁部４２と前記吸い込み側壁部４２の空気下流側に連続して形成された吹き出し側壁部４３とで構成され、この吸い込み側壁部４２は空気上流側に指向しながらその径方向外方に向けて湾曲するような断面形状を有している。尚、この場合、吸い込み側壁部４２の湾曲角度範囲はほぼ９０°に設定されている（例えば、特許文献１参照）。
実公昭５９−１６６９４号公報 The suction port 41 of the bell mouth 4 is composed of a suction side wall portion 42 located on the motor 3 side and a blowout side wall portion 43 formed continuously on the air downstream side of the suction side wall portion 42. The portion 42 has a cross-sectional shape that curves toward the outside in the radial direction while being directed to the upstream side of the air. In this case, the bending angle range of the suction side wall portion 42 is set to approximately 90 ° (see, for example, Patent Document 1).
Japanese Utility Model Publication No.59-16694

しかしながら、前記従来の送風機においては、吸い込み側または吹き出し側における空気の流れの剥離によるファン運転騒音とファン性能が悪化するという課題を有していた。   However, the conventional blower has a problem that fan operation noise and fan performance are deteriorated due to separation of air flow on the suction side or the blowout side.

すなわち、送風機１０を運転した時、図４に矢印流線で示すように、翼２の前方からの空気流入に加えて前記翼２の外周側からも多くの空気が吸入されるが、このとき吸い込み側壁部４２の外周部に吸い込み空気の一部が衝突してその内周面側に空気流れの剥離が生じ、これによって比較的大きなファン運転騒音が生じるものである。   That is, when the blower 10 is operated, as shown by an arrow streamline in FIG. 4, in addition to the air inflow from the front of the blade 2, a large amount of air is sucked from the outer peripheral side of the blade 2, but at this time A part of the sucked air collides with the outer peripheral portion of the suction side wall portion 42 and the air flow is separated on the inner peripheral surface side, thereby generating a relatively large fan operating noise.

一方、吹き出し側においても、図４の吹き出し側壁部４３のように断面形状が直線的でかつ外側へ広がっているような形状では、プロペラファンのような吹き出し流れが比較的軸方向成分が主流であれば、吹き出し側壁面４３から流れが剥離し、死水域が生じ性能が低下しやすいことになる。   On the other hand, on the blowout side, the blowout flow like the propeller fan has a relatively axial component in the mainstream when the cross-sectional shape is linear and widens outward like the blowout side wall 43 in FIG. If there is, the flow is separated from the blowing side wall surface 43, a dead water area is generated, and the performance is likely to be lowered.

またこの種のベルマウスでは、大きく吹き出し側と吸い込み側の２つの部材で構成され、比較的コストも高かった。   Further, this type of bell mouth is largely composed of two members on the blowout side and the suction side, and the cost is relatively high.

本発明は、前記従来の課題を解決するもので、広い運転領域において、送風機運転騒音の低減と送風機性能の向上とを達成しうる送風機を提供することを目的とする。   This invention solves the said conventional subject, and it aims at providing the air blower which can achieve reduction of air blower operation noise and improvement of air blower performance in a wide operation area | region.

前記従来の課題を解決するために、本発明の送風機は、複数の翼を有する斜流羽根車と、前記斜流羽根車を回転駆動するモータと、吸い込み口を有すると共に前記斜流羽根車の周囲に設けられたエアガイダーとを備え、前記エアガイダーは、前記吸い込み口の吸い込み側に位置する吸い込み側壁部と、前記吸い込み口の吹き出し側に位置する吹き出し側壁部と、前記吹き出し側壁部の端部より、前記吸い込み口の軸方向と直交する方向へ延設さ
れた仕切り壁部とからなり、前記吸い込み側壁部の断面を、前記吸い込み口の内周面から径方向外方に向かって略半円状に湾曲する形状としたもので、吸い込み側壁部での空気の衝突を緩和し、又空気の剥離を抑制し運転騒音が低くかつ高い送風性能を実現することができる。 In order to solve the conventional problems, a blower of the present invention includes a mixed flow impeller having a plurality of blades, a motor that rotationally drives the mixed flow impeller, a suction port, and the mixed flow impeller. An air guider provided around the suction side wall portion located on the suction side of the suction port, a blowout side wall portion located on the blowout side of the suction port, and an end portion of the blowout side wall portion A partition wall portion extending in a direction orthogonal to the axial direction of the suction port, and the cross section of the suction side wall portion is substantially semicircular from the inner peripheral surface of the suction port toward the radially outer side In this configuration, it is possible to reduce the collision of air at the suction side wall portion, suppress the separation of the air, reduce the operating noise, and realize a high blowing performance.

本発明の空気調和機は、箱体と、前記箱体内に設けた熱交換器と、請求項１〜４のいずれか１項に記載の送風機を備え、前記送風機を前記熱交換器の下流側に配したもので、空気の衝突や剥離による運転騒音が低くかつ高い熱交換効率を有する空気調和機を提供することができる。   The air conditioner of this invention is equipped with the box, the heat exchanger provided in the said box, and the air blower of any one of Claims 1-4, The said air blower is the downstream of the said heat exchanger. Therefore, it is possible to provide an air conditioner that has low operation noise due to air collision and separation and high heat exchange efficiency.

本発明にかかる送風機は、広い範囲の流量域において空気の剥離が抑制されることから斜流送風機運転騒音のより一層の低減が可能となり、斜流羽根車の性能が高くかつ静粛運転が可能となるものである。   Since the blower according to the present invention suppresses air separation in a wide range of flow rates, it is possible to further reduce the mixed flow fan operating noise, and the mixed flow impeller has high performance and can be operated silently. It will be.

第１の発明は、複数の翼を有する斜流羽根車と、前記斜流羽根車を回転駆動するモータと、吸い込み口を有すると共に前記斜流羽根車の周囲に設けられたエアガイダーとを備え、前記エアガイダーは、前記吸い込み口の吸い込み側に位置する吸い込み側壁部と、前記吸い込み口の吹き出し側に位置する吹き出し側壁部と、前記吹き出し側壁部の端部より、前記吸い込み口の軸方向と直交する方向へ延設された仕切り壁部とからなり、前記吸い込み側壁部の断面を、前記吸い込み口の内周面から径方向外方に向かって略半円状に湾曲する形状としたもので、吸い込み側壁部での空気の衝突を緩和し、又空気の剥離を抑制し運転騒音が低くかつ高い送風性能を実現することができる。   The first invention includes a mixed flow impeller having a plurality of blades, a motor that rotationally drives the mixed flow impeller, and an air guider that has a suction port and is provided around the mixed flow impeller. The air guider is orthogonal to the axial direction of the suction port from the suction side wall portion located on the suction side of the suction port, the blowout side wall portion located on the blowout side of the suction port, and the end portion of the blowout side wall portion. A partition wall portion extending in the direction, and the cross section of the suction side wall portion has a shape that curves in a substantially semicircular shape radially outward from the inner peripheral surface of the suction port. It is possible to alleviate the collision of air at the side wall portion and to suppress the separation of the air so that the operation noise is low and the air blowing performance is high.

第２の発明は、特に、第１の発明の吹き出し側壁部の断面を曲面形状としたもので、吹きだし側壁部での空気の乱れや剥離を抑制し運転騒音が低くかつ高い送風性能を実現することができる。   In particular, the second aspect of the invention has a curved shape in the cross section of the blow-off side wall part of the first aspect of the invention, which suppresses air turbulence and separation at the blow-off side wall part and realizes a low blowing noise and high air blowing performance. be able to.

第３の発明は、特に、第２の発明の吹き出し側壁部の断面を斜流羽根車側へ膨らむような曲面形状としたもので、更に空気の吹きだし流れを壁部に沿って滑らかに流すことができ、高い送風性能を実現することもできる。   In the third invention, in particular, the cross section of the blowing side wall portion of the second invention is formed into a curved shape so as to swell toward the mixed flow impeller side, and the air blowing flow is made to flow smoothly along the wall portion. And high air blowing performance can be realized.

第４の発明は、特に、第１〜３のいずれか１つの発明のエアガイダーと仕切り壁部とを一体に成型したもので、組み立てが容易で、精度が良く、かつ安価な送風機を実現することができる。   In particular, the fourth invention is an air guider according to any one of the first to third inventions and a partition wall, which are integrally molded, and an air blower that is easy to assemble, accurate, and inexpensive is realized. Can do.

第５の発明は、箱体と、前記箱体内に設けた熱交換器と、請求項１〜４のいずれか１項に記載の送風機を備え、前記送風機を前記熱交換器の下流側に配したもので、空気の衝突や剥離による運転騒音が低くかつ高い熱交換効率を有する空気調和機を提供することができる。   5th invention is equipped with the box, the heat exchanger provided in the said box, and the air blower of any one of Claims 1-4, and arrange | positions the said air blower to the downstream of the said heat exchanger. Therefore, it is possible to provide an air conditioner that has low operation noise due to collision and separation of air and has high heat exchange efficiency.

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。   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.

（実施の形態１）
図１は、本発明の第１の実施の形態における送風機を搭載した空気調和機の断面図である。 (Embodiment 1)
FIG. 1 is a cross-sectional view of an air conditioner equipped with a blower according to the first embodiment of the present invention.

図において、空気調和機１１は、箱体７と、前記箱体７内に設けた熱交換器６と、前記
熱交換器６の下流側に配されかつ箱体７に固着された支持フレーム５で支持された斜流型の送風機１２で構成されている。送風機１２は、複数の翼２を備えかつモータ３によって回転駆動される斜流羽根車１２ａを備えている。 In the figure, an air conditioner 11 includes a box 7, a heat exchanger 6 provided in the box 7, and a support frame 5 that is disposed downstream of the heat exchanger 6 and is fixed to the box 7. It is comprised with the mixed flow type fan 12 supported by. The blower 12 includes a mixed flow impeller 12 a that includes a plurality of blades 2 and is rotationally driven by a motor 3.

また前記斜流羽根車１２ａの各翼２、２・・・の外周側には、吸い込み口４１と、吸い込み口４１の吸い込み側に位置する吸い込み側壁部４２と、吸い込み口４１の吹き出し側に位置する吹き出し側壁部４３とで構成されるエアガイダー１３とともに前記吹き出し側壁部４３の端部には、これに連続して前記吸い込み口４１の軸方向にほぼ直交する方向へ延びる仕切り壁部４４が、箱体７の吹き出し側の前面板８を兼ねて設置されている。   Further, on the outer peripheral side of each blade 2, 2,... Of the mixed flow impeller 12a, the suction port 41, the suction side wall portion 42 positioned on the suction side of the suction port 41, and the discharge side of the suction port 41 are positioned. A partition wall 44 extending continuously in a direction substantially perpendicular to the axial direction of the suction port 41 is provided at the end of the blow-off side wall 43 together with the air guider 13 constituted by the blow-off side wall 43. It is also installed as a front plate 8 on the blowing side of the body 7.

そして、本実施の形態における送風機は、前記エアガイダー１３の吸い込み側壁部４２部分の形状に特徴を有しており、これによって従来に増して高い性能と低騒音運転とを実現している。すなわち、前記吸い込み側壁部４２を、吸い込み口４１の内周面に連続してこれから空気上流側を指向しながら径方向外方にほぼ半円状に湾曲する断面形状としている。   And the air blower in this Embodiment has the characteristics in the shape of the suction side wall part 42 part of the said air guider 13, and implement | achieves a higher performance and low noise operation compared with the past by this. That is, the suction side wall portion 42 has a cross-sectional shape that curves in a substantially semicircular shape outward in the radial direction while continuing from the inner peripheral surface of the suction port 41 toward the upstream side of the air.

以上の構成により、まず第１に、翼２の前面側からの空気の他に前記翼２の外周側からも空気の吸い込みが行われる際、図２の矢印流線で示すように、翼２の外周側から吸い込まれる空気は、前記吸い込み側壁部４２が大きな曲率半径をもつ半円状に形成されていることから、従来のように前記吸い込み側壁部４２の外周部に衝突することなく前記吸い込み側壁部４２の表面に沿って流れて吸い込み口４１側に吸い込まれる。したがって、前記吸い込み口４１部分において空気流れに剥離が生じるということがほとんどなくなり、吸い込み流れがより改善されることから送風機運転騒音がより効果的に抑制され、送風機１２の低騒音運転が実現されるものである。   With the above configuration, first, when air is sucked from the outer peripheral side of the blade 2 in addition to the air from the front surface side of the blade 2, as shown by the arrow streamline in FIG. Since the suction side wall portion 42 is formed in a semicircular shape having a large radius of curvature, the air sucked from the outer peripheral side of the suction portion does not collide with the outer peripheral portion of the suction side wall portion 42 as in the prior art. It flows along the surface of the side wall part 42 and is sucked into the suction port 41 side. Therefore, there is almost no occurrence of separation in the air flow at the suction port 41, and since the suction flow is further improved, the fan operation noise is more effectively suppressed, and the low noise operation of the blower 12 is realized. Is.

また、前記吹き出し側壁部４３を図２に示すように斜流羽根車１２ａ側へ膨らますような曲面形状にすることにより、斜流羽根車１２ａから周方向または径方向へ吹き出される空気は曲面形状の壁面に沿って流れ、剥離や損失の少ないスムースな流れを実現し、低騒音化を促進することが出来る。   Further, the blowout side wall 43 is formed in a curved shape that swells toward the mixed flow impeller 12a as shown in FIG. 2, so that the air blown out from the mixed flow impeller 12a in the circumferential direction or the radial direction is curved. A smooth flow with less separation and loss can be realized along with the wall surface, and noise reduction can be promoted.

さらに、前記エアガイダー１３と前記仕切り壁部４４と前記箱体の前面板８を一体的に成型するようにすれば、より安価な送風機を実現することが出来る。一体成型については例えば一体プレス加工などが考えられる。   Furthermore, if the air guider 13, the partition wall 44, and the front plate 8 of the box are integrally molded, a more inexpensive blower can be realized. As for integral molding, for example, integral press working or the like can be considered.

以上のように、本発明にかかる送風機は、広い範囲の流量域において、空気の剥離による運転騒音が大幅に低減され、送風性能が高いもので、空気調和機に限らず、空気清浄機、換気装置など、送風機を用いる各種機器に広く適用できる。   As described above, the blower according to the present invention greatly reduces the operation noise due to the separation of air in a wide range of flow rates, and has a high blowing performance. The present invention can be widely applied to various devices using a blower such as an apparatus.

本発明の実施の形態１における送風機の縦断面図The longitudinal cross-sectional view of the air blower in Embodiment 1 of this invention 同送風機の流れ状態説明図Flow diagram of the blower 従来の送風機の縦断面図Vertical section of a conventional blower 同送風機の流れ状態説明図Flow diagram of the blower

符号の説明Explanation of symbols

２ 翼
３ モータ
６ 熱交換器
７ 箱体
１１ 空気調和機
１２ 送風機
１２ａ 斜流羽根車
１３ エアガイダー
４１ 吸い込み口
４２ 吸い込み側壁部
４３ 吹き出し側壁部
４４ 仕切り壁部 2 Wings 3 Motor 6 Heat exchanger 7 Box 11 Air conditioner 12 Blower 12a Diagonal impeller 13 Air guider 41 Suction port 42 Suction side wall 43 Blowout side wall 44 Partition wall

Claims (5)

複数の翼を有する斜流羽根車と、前記斜流羽根車を回転駆動するモータと、吸い込み口を有すると共に前記斜流羽根車の周囲に設けられたエアガイダーとを備え、前記エアガイダーは、前記吸い込み口の吸い込み側に位置する吸い込み側壁部と、前記吸い込み口の吹き出し側に位置する吹き出し側壁部と、前記吹き出し側壁部の端部より、前記吸い込み口の軸方向と直交する方向へ延設された仕切り壁部とからなり、前記吸い込み側壁部の断面を、前記吸い込み口の内周面から径方向外方に向かって略半円状に湾曲する形状としたことを特徴とする送風機。 A mixed flow impeller having a plurality of blades; a motor that rotationally drives the mixed flow impeller; and an air guider that has a suction port and is provided around the mixed flow impeller, wherein the air guider The suction side wall portion located on the suction side of the mouth, the blow side wall portion located on the blow side of the suction port, and the end of the blow side wall portion are extended in a direction orthogonal to the axial direction of the suction port. A blower comprising: a partition wall portion, wherein a cross section of the suction side wall portion is curved in a substantially semicircular shape from an inner peripheral surface of the suction port toward a radially outer side. 吹き出し側壁部の断面を曲面形状とした請求項１に記載の送風機。 The blower according to claim 1, wherein a cross-section of the blowing side wall portion is a curved shape. 吹き出し側壁部の断面を斜流羽根車側へ膨らむような曲面形状とした請求項２に記載の送風機。 The blower according to claim 2, wherein the blower side wall has a curved shape in which the cross section of the blowout side wall swells toward the mixed flow impeller. エアガイダーと仕切り壁部とを一体に成型した請求項１〜３のいずれか１項に記載の送風機。 The blower according to any one of claims 1 to 3, wherein the air guider and the partition wall portion are integrally molded. 箱体と、前記箱体内に設けた熱交換器と、請求項１〜４のいずれか１項に記載の送風機を備え、前記送風機を前記熱交換器の下流側に配したことを特徴とする空気調和機。 It provided with the box, the heat exchanger provided in the said box, and the air blower of any one of Claims 1-4, The said air fan was distribute | arranged to the downstream of the said heat exchanger, It is characterized by the above-mentioned. Air conditioner.
JP2004113812A 2004-04-08 2004-04-08 Blower and air conditioner Withdrawn JP2005299432A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100865576B1 (en) 2007-05-25 2008-10-28 효성기연산업 주식회사 High efficiency and low noise inclined type fan assembly using of Taguchi design method of experiments
JP2010091167A (en) * 2008-10-07 2010-04-22 Panasonic Corp Air blower and ventilation fan
US20110100051A1 (en) * 2009-10-30 2011-05-05 Trane International Inc. Air Handling Unit With Mixed-Flow Blower
JP2011179778A (en) * 2010-03-03 2011-09-15 Panasonic Corp Air conditioner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100865576B1 (en) 2007-05-25 2008-10-28 효성기연산업 주식회사 High efficiency and low noise inclined type fan assembly using of Taguchi design method of experiments
JP2010091167A (en) * 2008-10-07 2010-04-22 Panasonic Corp Air blower and ventilation fan
US20110100051A1 (en) * 2009-10-30 2011-05-05 Trane International Inc. Air Handling Unit With Mixed-Flow Blower
US9328939B2 (en) * 2009-10-30 2016-05-03 Trane International Inc. Air handling unit with mixed-flow blower
JP2011179778A (en) * 2010-03-03 2011-09-15 Panasonic Corp Air conditioner

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