JP4539855B2 - Air conditioner - Google Patents

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JP4539855B2
JP4539855B2 JP2005192358A JP2005192358A JP4539855B2 JP 4539855 B2 JP4539855 B2 JP 4539855B2 JP 2005192358 A JP2005192358 A JP 2005192358A JP 2005192358 A JP2005192358 A JP 2005192358A JP 4539855 B2 JP4539855 B2 JP 4539855B2
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stabilizer
flow fan
air conditioner
cross flow
tongue
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JP2007010240A (en
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聡彦 安藤
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Fujitsu General Ltd
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Description

本発明は、空気調和機に係わり、より詳細には、スタビライザの吸込領域と吹出領域の夫々でクロスフローファンの軸線方向における送風時の圧力変動に時間差(位相差)を設け、圧力変動のピークレベルの低減をはかることにより、送風性能が損なわれることなく騒音の発生を防止できるようにした構造に関するものである。   The present invention relates to an air conditioner, and more specifically, provides a time difference (phase difference) in pressure fluctuation during blowing in the axial direction of a crossflow fan in each of a suction area and a blowing area of a stabilizer, and the peak of pressure fluctuation By reducing the level, the present invention relates to a structure that can prevent the generation of noise without impairing the blowing performance.

従来の空気調和機においては、スタビライザの製作が容易かつ確実な騒音低減効果が得られる空気調和機用横流ファン送風器として、多数の単位ファンが一列に設けられる横流ファンと、横流ファンの駆動力を提供するモータと、横流ファンにより送風される空気の流路を提供するリヤガイドと、横流ファンの前方に設けられ、横流ファンの外周面と適正間隔を保つ半円状の対向部を揃え、横流ファンの回転時発生される渦流を安定させるスタビライザの対向部には、その頂点は横流ファンの外周面と常に適正間隔を保ちながら頂点の位置が横流ファンの回転時横流ファンの軸方向を追って連続的かつ規則的に変わることにより騒音発生時点を分散させるリブが形成されてなるものが開示されていた(例えば、特許文献1参照。)。   In a conventional air conditioner, as a crossflow fan blower for an air conditioner that makes it easy to manufacture a stabilizer and provides a reliable noise reduction effect, a crossflow fan in which a large number of unit fans are arranged in a row, and the driving force of the crossflow fan Motor, a rear guide that provides a flow path for the air blown by the cross-flow fan, and a semicircular facing portion that is provided in front of the cross-flow fan and maintains an appropriate distance from the outer circumferential surface of the cross-flow fan. At the opposite part of the stabilizer that stabilizes the vortex generated during the rotation of the fan, the apex always keeps the proper distance from the outer peripheral surface of the cross flow fan, and the position of the apex continues following the axial direction of the cross flow fan when the cross flow fan rotates There has been disclosed what is formed with ribs that disperse the time of noise generation by changing regularly and regularly (see, for example, Patent Document 1).

しかしながら、上記構成においては、特開平11−304178号公報に添付された図2〜図7に示すように、スタビライザ30は横流ファン10と向かい合う位置にその断面が略半円状の対向部31を持ち、対向部31にはリブ31a が形成されているが、半円状の対向部31はスタビライザ30下方の流路内に突出するように垂下した構成になっており、これによって、対向部31の下端が該流路内における送風性能に悪影響を与えてしまうおそれがあった。   However, in the above configuration, as shown in FIGS. 2 to 7 attached to Japanese Patent Application Laid-Open No. 11-304178, the stabilizer 30 has a facing portion 31 having a substantially semicircular cross section at a position facing the cross flow fan 10. The opposing portion 31 is formed with ribs 31a, but the semicircular opposing portion 31 is configured to hang down so as to protrude into the flow path below the stabilizer 30. There was a possibility that the lower end of would adversely affect the blowing performance in the flow path.

また、貫流送風機内蔵型空気調和機として、スタビライザおよび後壁により画成された流路内に貫流送風機を配設してなる空気調和機において、スタビライザと貫流送風機との隙間をこの貫流送風機の軸線方向に沿って少なくとも両端のうち一端の一部区間を一定とし、この一定区間以外の区間は貫流送風機の他端に向かうに従って漸減するようにすると共に、スタビライザの上端を高低を有する形状としてなるものが開示されていた(例えば、特許文献2参照。)。   Moreover, as an air conditioner with a built-in once-through fan, an air conditioner in which a once-through fan is disposed in a flow path defined by a stabilizer and a rear wall, the gap between the stabilizer and the once-through fan is defined as the axis of the once-through fan. A part of at least one end of both ends along the direction is made constant, and a part other than the constant part is gradually reduced toward the other end of the cross-flow blower, and the upper end of the stabilizer is shaped to have a height. Has been disclosed (see, for example, Patent Document 2).

しかしながら、上記構成においては、特開平4−356630号公報に添付された図1および図2に示すように、スタビライザと貫流送風機との隙間がB区間において貫流送風機の他端に向かうに従って漸減すると共に、スタビライザの上端を高低を有する形状としているが、とくに貫流送風機の長さによっては、スタビライザと貫流送風機との隙間を好適な漸減量で適正に設定することが困難になったり、また、スタビライザの上端の高低を適正に設定することが困難になるおそれがあった。   However, in the above configuration, as shown in FIG. 1 and FIG. 2 attached to JP-A-4-356630, the gap between the stabilizer and the once-through fan gradually decreases in the B section toward the other end of the once-through fan. However, depending on the length of the once-through fan, it may be difficult to properly set the gap between the stabilizer and the once-through fan with a suitable gradual reduction amount. There was a risk that it would be difficult to set the upper and lower ends appropriately.

特開平11−304178号公報Japanese Patent Laid-Open No. 11-304178 特開平4−356630号公報JP-A-4-356630

そこで、本発明は上述した課題を解決するためになされたものであって、その目的は、スタビライザの吸込領域と吹出領域の夫々でクロスフローファンの軸線方向における送風時の圧力変動に時間差(位相差)を設け、圧力変動のピークレベルの低減をはかることにより、送風性能が損なわれることなく騒音の発生を防止できるようにした空気調和機を提供することにある。   Accordingly, the present invention has been made to solve the above-described problems, and the purpose of the present invention is to provide a time difference (position) in the pressure fluctuation during blowing in the axial direction of the crossflow fan in each of the suction area and the blowing area of the stabilizer. The object of the present invention is to provide an air conditioner that can prevent noise generation without impairing air blowing performance by providing a phase difference) and reducing the peak level of pressure fluctuation.

上述した目的を達成するため、本発明は以下に示すいくつかの特徴を備えている。
スタビライザおよび舌部を含むフロントガイダとリヤガイダとからなる送風路内に、前記スタビライザに対向するクロスフローファンを設けてなる空気調和機において、
前記クロスフローファンと前記スタビライザとによるギャップ部が、前記クロスフローファンの中央部から両端部に向けて漸次拡大するように構成されるとともに、前記舌部と前記リヤガイダとにより形成される風路が、前記ギャップ部の拡大に対応して漸次縮小されるように構成されてなることを特徴としている。
In order to achieve the above-described object, the present invention has several features described below.
In an air conditioner provided with a cross flow fan facing the stabilizer in the air passage composed of a front guider and a rear guider including a stabilizer and a tongue,
A gap portion formed by the cross flow fan and the stabilizer is configured to gradually expand from a center portion of the cross flow fan toward both end portions, and an air passage formed by the tongue portion and the rear guider is provided. In this case, the gap portion is gradually reduced corresponding to the enlargement of the gap portion.

また、前記スタビライザの上端部が、同スタビライザの舌部と平行に形成されてなることを特徴としている。   Further, the upper end portion of the stabilizer is formed in parallel with the tongue portion of the stabilizer.

本発明によれば、クロスフローファンとこれに対向するスタビライザとによるギャップ部が、前記クロスフローファンの中央部から両端部に向けて漸次拡大するように構成されるとともに、フロントガイダの一部をなす舌部とリヤガイダとにより形成される風路が、前記ギャップ部の拡大に対応して漸次縮小されるように構成されたことにより、送風時の圧力変動に時間差(位相差)が発生するようになって、圧力変動のピークレベルの低減をはかり騒音を防止できるようになる。   According to the present invention, the gap portion formed by the cross flow fan and the stabilizer facing the cross flow fan is configured to gradually expand from the center portion of the cross flow fan toward both ends, and a part of the front guider is formed. The air passage formed by the tongue portion and the rear guider is configured to be gradually reduced in response to the enlargement of the gap portion, so that a time difference (phase difference) occurs in pressure fluctuation during blowing. Thus, the peak level of pressure fluctuation can be reduced and noise can be prevented.

また、前記スタビライザの上端部が、前記舌部と平行に形成されたことにより、熱交換器を通過した空気の吸込み側にも圧力変動の時間差(位相差)を与えるための傾斜を付加した構成となり、圧力変動のピークレベルの低減を更に効果的にはかって騒音を防止できるようになる。   Further, since the upper end portion of the stabilizer is formed in parallel with the tongue portion, an inclination for giving a time difference (phase difference) of pressure fluctuation is also added to the suction side of the air that has passed through the heat exchanger. Thus, noise can be prevented by more effectively reducing the peak level of pressure fluctuation.

次に、本発明の実施形態について図面を参照しながら説明する。
図1は本発明による空気調和機の説明図で、(A)は正面図、(B)は縦断面図であり、図2は本発明による空気調和機の実施例1を示す要部説明図で、(A)は斜視図、(B)は(A)で示すA矢視図であり、図3は実施例1を示す要部説明図で、(A)は図2(A)で示すB矢視図、(B)は図2(A)で示すC矢視図であり、図4は本発明による空気調和機の実施例2を示す要部説明図で、(A)は斜視図、(B)は(A)で示すA矢視図、(C)は(A)で示すB矢視図であり、図5はクロスフローファンの発生する圧力の時刻暦波形の重ね合わせを示すグラフである。
Next, embodiments of the present invention will be described with reference to the drawings.
1A and 1B are explanatory views of an air conditioner according to the present invention, FIG. 1A is a front view, FIG. 1B is a longitudinal sectional view, and FIG. (A) is a perspective view, (B) is a view taken in the direction of arrow A shown in (A), FIG. 3 is an explanatory view of a main part showing Example 1, and (A) is shown in FIG. 2 (A). B arrow view, (B) is a C arrow view shown in FIG. 2 (A), FIG. 4 is a main part explanatory view showing a second embodiment of an air conditioner according to the present invention, (A) is a perspective view. FIGS. 5A and 5B are views taken along the arrow A shown in FIG. 5A, FIG. 5C is a view taken along the arrow B shown in FIG. 5A, and FIG. It is a graph.

本発明に係る空気調和機は、図に示すように、本体上部に設けられた吸込口aと本体下部に設けられた吹出口bとを結ぶ空気通路に、前記吸込口aから吸い込まれた空気中の塵埃を除去するフィルタcと、塵埃を除去した空気を熱交換する熱交換器eと、スタビライザ1aおよび舌部1bを含むフロントガイダ1とリヤガイダ2とにより形成した送風路3内に前記スタビライザ1aに対向して配置されるクロスフローファン4とを設けた構成になっている。   As shown in the drawing, the air conditioner according to the present invention is the air sucked from the suction port a into the air passage connecting the suction port a provided in the upper part of the main body and the blower outlet b provided in the lower part of the main body. The stabilizer is provided in the air passage 3 formed by the filter c for removing the dust, the heat exchanger e for exchanging heat of the air from which the dust has been removed, the front guider 1 and the rear guider 2 including the stabilizer 1a and the tongue 1b. The cross flow fan 4 disposed opposite to 1a is provided.

前記フィルタcは、近年、同フィルタcに付着した塵埃を自動清掃装置dによって一定時間毎に自動的に除去することにより、該箇所における通風抵抗が大きくなってしまわないようにして、騒音を発生させることなく効率のよい運転を行えるようにしている。   In recent years, the filter c generates noise by automatically removing dust adhering to the filter c at regular intervals by an automatic cleaning device d so that the ventilation resistance does not increase at that location. It is possible to perform an efficient operation without making it happen.

そして、前記自動清掃装置dによって細かい塵埃を容易に除去できるようにするため、前記フィルタcは、従来のフィルタ以上に目が細かく空気抵抗の大きいものが使用されていることから、前記クロスフローファン4は高速回転域で使用することで高風量化を実現せざるを得ず、従来のフィルタを搭載する場合に比べて高騒音化を避けにくい傾向になっているという課題を解決するため、本発明においては、前記スタビライザ1aおよび前記舌部1bを含む前記フロントガイダ1に工夫を加えることによって、風量を低下させることなく騒音の発生を抑えるように構成している。   In order to allow fine dust to be easily removed by the automatic cleaning device d, the cross-flow fan is used because the filter c is finer and has a higher air resistance than a conventional filter. In order to solve the problem that No. 4 has a tendency to avoid high noise compared to the case where a conventional filter is installed, it has to realize high air volume by using it in a high-speed rotation range. In the present invention, the front guider 1 including the stabilizer 1a and the tongue 1b is devised to suppress the generation of noise without reducing the air volume.

前記スタビライザ1aおよび前記舌部1bを含む前記フロントガイダ1は、実施例1として図2(A)および図2(B)に示すように、W/2位置となる中央部からその両側部に向けて傾斜角βで上方に傾斜するように形成されており、同フロントガイダ1の中央部と両側部とにおいて高さhで示すような高低差が生じるようになっている。   As shown in FIGS. 2 (A) and 2 (B), the front guider 1 including the stabilizer 1a and the tongue 1b is directed from the central portion at the W / 2 position toward both sides thereof as shown in FIGS. Thus, the front guider 1 has a height difference as shown by a height h between the central portion and both side portions.

なお、前記クロスフローファン4に対する前記傾斜角βは、縦断面図として示す図3(B)によって、前記クロスフローファン4の軸線と、前記スタビライザ1aの上端部1a' を結ぶ線と、前記舌部1bの両側部を結ぶ線とがなす角度θ1 と、前記クロスフローファン4の軸線と、前記スタビライザ1aの上端部1a' を結ぶ線と、前記舌部1bの中央部を結ぶ線とがなす角度θ2 との角度差として示されている。   Note that the inclination angle β with respect to the cross flow fan 4 is determined from the line connecting the axis of the cross flow fan 4 and the upper end 1a ′ of the stabilizer 1a and the tongue according to FIG. An angle θ1 formed by a line connecting both side portions of the portion 1b, a line connecting the axis of the cross flow fan 4, the upper end portion 1a ′ of the stabilizer 1a, and a line connecting the central portion of the tongue 1b. It is shown as an angular difference from the angle θ2.

これにより、前記スタビライザ1aおよび前記舌部1bを含む前記フロントガイダ1の左右(長手)方向における送風時の圧力変動に時間差(位相差)を発生させるようにした構造になって、該箇所における騒音の発生を抑えることができるようになる。   Thus, the front guider 1 including the stabilizer 1a and the tongue 1b has a structure in which a time difference (phase difference) is generated in the pressure fluctuation during blowing in the left and right (longitudinal) direction. Can be suppressed.

また、実施例1として、図3(A)および図3(B)に示すギャップ部L1およびL2のように、前記クロスフローファン4と、これに対向する前記スタビライザ1aとの隙間が、前記クロスフローファン4の軸線方向の中央部から両側部に向けて傾斜角αにより漸次拡大するように構成されている。   Further, as the first embodiment, as in the gap portions L1 and L2 shown in FIGS. 3A and 3B, the gap between the cross flow fan 4 and the stabilizer 1a facing the cross flow fan 4 is the cross section. The flow fan 4 is configured to gradually expand from the central portion in the axial direction toward the both sides by an inclination angle α.

なお、前記舌部1bと前記リヤガイダ2とによって形成される風路(前記送風路3の一部)は、図2(A)および図2(B)に基づいて上述したように、前記舌部1bの中央部と両側部とにおいて高さhで示すような高低差が生じるように形成したことで、前記ギャップ部の拡大に対応して漸次縮小されるように構成されている。   The air passage formed by the tongue portion 1b and the rear guider 2 (a part of the air passage 3) is the tongue portion as described above with reference to FIGS. 2 (A) and 2 (B). Since the height difference as indicated by the height h is generated between the central portion and the both side portions of 1b, it is configured to be gradually reduced in accordance with the enlargement of the gap portion.

これにより、図2(A)および図2(B)に示すように、前記スタビライザ1aおよび前記舌部1bを含む前記フロントガイダ1の構造によって生じる風量の低下や、渦中心静圧の低下を防止して空力性能を損ねないようにすることができるようになり、図5に太線で示すように、前記クロスフローファン4の1ブロック内の複数箇所で同位置の発生する圧力の時刻暦波形(圧力変動とその重ね合わせ波形)のようになって、風量を低下させることなく騒音の発生(のピーク値:Ps(t) )を効果的に抑える(低減させる)ことができるようになる。   As a result, as shown in FIGS. 2 (A) and 2 (B), a decrease in air volume and a decrease in vortex center static pressure caused by the structure of the front guider 1 including the stabilizer 1a and the tongue 1b are prevented. Thus, it becomes possible to prevent the aerodynamic performance from being impaired, and as shown by a thick line in FIG. 5, a time calendar waveform of the pressure generated at the same position at a plurality of locations in one block of the cross flow fan 4 ( (Pressure fluctuation and its superimposed waveform), noise generation (its peak value: Ps (t)) can be effectively suppressed (reduced) without reducing the air volume.

次に、実施例2について図4(A)乃至図4(C)に基づいて説明する。
前記スタビライザ1aの上端部1a' が前記舌部1bと平行に形成されたことにより、図1(B)に基づいて説明した前記熱交換器eを通過した空気の吸込み側にも、圧力変動の位相差を与えるための傾斜を付加させた構成にしている。
Next, Example 2 will be described with reference to FIGS. 4 (A) to 4 (C).
Since the upper end portion 1a ′ of the stabilizer 1a is formed in parallel with the tongue portion 1b, the pressure fluctuation also occurs on the suction side of the air that has passed through the heat exchanger e described with reference to FIG. It is configured to have an inclination for giving a phase difference.

これにより、前記スタビライザ1aおよび前記舌部1bを含む前記フロントガイダ1の左右(長手)方向において、上述した実施例1における作用効果に加えて、送風時の空気の吸込み側における圧力変動のピークレベルの低減をはかることができるようになり、騒音の発生を更に効果的に防止することができるようになる。   Thereby, in the left and right (longitudinal) direction of the front guider 1 including the stabilizer 1a and the tongue portion 1b, in addition to the function and effect in the first embodiment, the peak level of pressure fluctuation on the air suction side during blowing Can be reduced, and the generation of noise can be more effectively prevented.

本発明による空気調和機の説明図で、(A)は正面図であり、(B)は縦断面図である。It is explanatory drawing of the air conditioner by this invention, (A) is a front view, (B) is a longitudinal cross-sectional view. 本発明による空気調和機の実施例1を示す要部説明図で、(A)は斜視図であり、(B)は(A)で示すA矢視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is principal part explanatory drawing which shows Example 1 of the air conditioner by this invention, (A) is a perspective view, (B) is A arrow view shown by (A). 本発明による空気調和機の実施例1を示す要部説明図で、(A)は図2(A)で示すB矢視図であり、(B)は図2(A)で示すC矢視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is principal part explanatory drawing which shows Example 1 of the air conditioner by this invention, (A) is B arrow view shown in FIG. 2 (A), (B) is C arrow view shown in FIG. 2 (A). FIG. 本発明による空気調和機の実施例2を示す要部説明図で、(A)は斜視図であり、(B)は(A)で示すA矢視図であり、Cは(A)で示すB矢視図である。It is principal part explanatory drawing which shows Example 2 of the air conditioner by this invention, (A) is a perspective view, (B) is an A arrow view shown by (A), C is shown by (A). FIG. クロスフローファンの発生する圧力の時刻暦波形の重ね合わせを示すグラフである。It is a graph which shows the superposition of the time calendar waveform of the pressure which a cross flow fan generates.

符号の説明Explanation of symbols

1 フロントガイダ
1a スタビライザ
1a' 上端部
1b 舌部
2 リアガイダ
3 送風路
4 クロスフローファン
α,β 傾斜角
a 吸込口
b 吹出口
c フィルタ
d 自動清掃装置
e 熱交換器
h 高さ(高低差)
L1,L2 ギャップ部
1 Front guider
1a Stabilizer
1a 'top edge
1b Tongue 2 Rear guider 3 Air passage 4 Cross flow fan α, β Inclination angle a Suction port b Outlet c Filter d Automatic cleaning device e Heat exchanger h Height (height difference)
L1, L2 Gap part

Claims (2)

スタビライザおよび舌部を含むフロントガイダとリヤガイダとからなる送風路内に、前記スタビライザに対向するクロスフローファンを設けてなる空気調和機において、
前記クロスフローファンと前記スタビライザとによるギャップ部が、前記クロスフローファンの中央部から両端部に向けて漸次拡大するように構成されるとともに、前記舌部と前記リヤガイダとにより形成される風路が、前記ギャップ部の拡大に対応して漸次縮小されるように構成されてなることを特徴とする空気調和機。
In an air conditioner provided with a cross flow fan facing the stabilizer in the air passage composed of a front guider and a rear guider including a stabilizer and a tongue,
A gap portion formed by the cross flow fan and the stabilizer is configured to gradually expand from a center portion of the cross flow fan toward both end portions, and an air passage formed by the tongue portion and the rear guider is provided. The air conditioner is configured to be gradually reduced in correspondence with the enlargement of the gap portion.
前記スタビライザの上端部が、同スタビライザの舌部と平行に形成されてなることを特徴とする請求項1に記載の空気調和機。   The air conditioner according to claim 1, wherein an upper end portion of the stabilizer is formed in parallel with a tongue portion of the stabilizer.
JP2005192358A 2005-06-30 2005-06-30 Air conditioner Expired - Fee Related JP4539855B2 (en)

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