JP2004278844A - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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Publication number
JP2004278844A
JP2004278844A JP2003068037A JP2003068037A JP2004278844A JP 2004278844 A JP2004278844 A JP 2004278844A JP 2003068037 A JP2003068037 A JP 2003068037A JP 2003068037 A JP2003068037 A JP 2003068037A JP 2004278844 A JP2004278844 A JP 2004278844A
Authority
JP
Japan
Prior art keywords
stabilizer
fan
indoor unit
tip
air conditioner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003068037A
Other languages
Japanese (ja)
Inventor
Koichi Sakai
浩一 酒井
Seiei Nakayama
聖英 中山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2003068037A priority Critical patent/JP2004278844A/en
Priority to CN 200410008509 priority patent/CN1253679C/en
Publication of JP2004278844A publication Critical patent/JP2004278844A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner preventing increase of noise due to air flow near a tip of a stabilizer without degrading wind volume performance. <P>SOLUTION: The stabilizer 7 is provided with a rounded part R on a tip part of a guider part 7a of tongue part upper part thereof and distance between the guider part 7a of the tongue part upper part and a fan 2 is gradually increased from a point of the tip part toward a stabilizer tongue part 7b. An inequality S1<S2 is satisfied when a distance between the point of the tip part and the fan 2 and a distance between the stabilizer tongue part 7b and the fan are defined as S1 and S2 respectively. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【産業上の利用分野】
本発明は住宅などの空調に用いる空気調和機の室内ユニットに関する。
【0002】
【従来の技術】
以下に従来の空気調和機の室内ユニットについて説明する(例えば特許文献1参照)。
【0003】
図7に示すように、空気調和機の本体1は、台枠2とこの台枠2の前方に取り付けられた前面カバー3とからなり、台枠2および前面カバー3の上部には、室内空気の吸い込みグリル4が設けられている。また、図8(a)に示すように、クロスフローファン5の中心から見て全域を囲むように2つ折りした熱交換器6a,6bが配設されている。
【0004】
従来のスタビライザ7は、その舌部上部のガイダ部7aの突端8から尖端9に向けて、舌部上部のガイダ部7aとファン5との距離を徐々に拡大させ、かつ、舌部上部のガイダ部7aの熱交換器6aとの距離が最短である最短距離点10から尖端9に向けて、熱交換器6aとの距離を徐々に拡大させた構成としている。
【0005】
この構成により、図8(b)に示すように、スタビライザ7のファン5の回転方向に伸びた舌部上部のガイダ部7aにおいて、ファン5との最短距離点である突端8から尖端9に向けて生じる点線の矢印で示した空気の漏れ流れが発生する。これにより、風量性能が劣化するとともに、漏れ流れの乱れにより僅かに騒音が上昇する。
【0006】
また、熱交換器6aの下部から流入した空気は、スタビライザ7の舌部上部のガイダ部7aのファン5の回転方向に伸びた部分に沿ってファン5に流入する時、漏れ流れの乱れを助長して騒音上昇となる。
【0007】
【特許文献1】
特開平8−61685号公報
【0008】
【発明が解決しようとする課題】
上述のように従来の構成では、スタビライザ7の突端8からの空気の漏れ流れが発生することにより風量性能が劣化するとともに、漏れ流れの乱れによって、騒音の上昇につながり、熱交換器6aの下部からの空気の流れによって、前記漏れ流れの乱れを助長することになり、騒音上昇につながる。すなわち、風量性能の低下と騒音の上昇という問題点を有している。
【0009】
本発明は上記従来の問題点を解決するもので、スタビライザ先端近傍の空気流による騒音の増加を防止し、風量性能が低下しない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。
【0010】
【課題を解決するための手段】
この目的を達成するために本発明の空気調和機の室内ユニットは、クロスフローファンと、スタビライザと、リアガイダと、熱交換器を備えた空気調和機の室内ユニットであって、前記スタビライザは、吹き出し部を形成する舌部から先端部に前記ファンの回転方向に伸びた前記クロスフローファン側において、前記クロスフローファンと前記スタビライザの距離が徐々に減少して、前記スタビライザの最先端部にアール部を設け、前記スタビライザの最先端部でファンとの距離が最短となるようにする。
【0011】
【実施の形態】
以下に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。
【0012】
前述従来の技術について説明した構成部分と同じ部分については同一符号を付し、その説明を省略する。
【0013】
(第1の実施の形態)
図1に示すように、空気調和機の本体1は、台枠2とこの台枠2の前方に取り付けられた前面カバー3とからなり、台枠2および前面カバー3の上部には、吸い込みグリル4が設けられている。また、図2に示すように、ファン5の中心から見て全域を囲むように熱交換器6a,6b,6cが配設されている。
【0014】
図3は、図2の矢印部分の拡大図である。図3に示すように、本実施例のスタビライザ7は、その舌部上部のガイダ部7aの最先端部にアールRを設け、その最先端部の尖端9から、スタビライザ舌部7bに向けて、舌部上部のガイダ部7aとファン2との距離を徐々に拡大させる。すなわち、最先端部の尖端9とファン2との距離:S1、スタビライザ舌部7bとファン2との距離:S2とすると、S1<S2の関係が成立する。
【0015】
この形状によりスタビライザ舌部7bからファン2の回転方向に誘引される流れ(破線矢印)は、スタビライザの舌部上部の最先端部の尖端9付近で、殆どファン5に吸い込まれる。すなわち、漏れ流れが殆どなく風量性能が向上する。また、最先端部にアールRを設けることにより、漏れ流れについても乱れを抑制して熱交換器側からの流れと円滑に合流して騒音低減の効果を得る。よって、風量性能の向上と騒音の低減の両者の効果を得ることができる。
【0016】
(第2の実施の形態)
図4は、図2の矢印部分の拡大図である。図4に示すように、本実施例は前述実施の形態1の構成に、スタビライザ7の舌部上部のガイダ部7aの先端部の近傍にファン側に凸となるアールrを設ける。このアールr部分でファンとの距離が最接近した点から、スタビライザ舌部7bに向けて、舌部上部のガイダ部7aとファン2との距離を徐々に拡大させる。すなわち、アールr部分でファンとの距離:S1、スタビライザ舌部7bとファン2との距離:S2とすると、S1<S2の関係が成立する。
【0017】
同時に、スタビライザ7の舌部上部のガイダ部7aの肉厚を、舌部から最先端部に向い徐々に減少させる。すなわち、図4に示した各部分における、肉厚をT1、T2、T3とすると、 T3<T2<T1 の関係が成立する。
【0018】
このアールr部分の形状によりスタビライザ舌部7bからファン2の回転方向に誘引される流れ(破線矢印)は、スタビライザの舌部上部のアールr部分で、乱流成分を抑制してファン5に吸い込まれて、低騒音化を図ることができる。
【0019】
また、スタビライザ7の肉厚が吹き出し部を形成する舌部7bから先端部に前記クロスフローファンの回転方向に徐々に減少していることにより、スタビライザのファン側に沿う漏れ流れと、熱交換器側に沿う流入流れが円滑に合流する。すなわち、両者の流れをスタビライザの肉厚を徐々に減少させることにより、合流付近すなわち最先端部あたりでは、ほぼ同じ方向成分を有する流れとなり、合流による損失を低減することができる。
【0020】
さらに、その最先端部にファン側に凸となるアール付きの尖端を設けることにより、後縁剥離を抑制する。ファン側に凸とすることにより、やや風速の速い漏れ流れの剥離を抑制することができる。また、漏れ流れを殆どなくす本来の機能も確保することができる。
【0021】
(第3の実施の形態)
図5に示すように、空気調和機の本体1において、主な吸い込み部が本体1の上部吸い込み部4aと下部吸い込み部4bによって構成され、本体1の前面部にはパネル11が装着されてレバー12によって開閉が可能で有り、図5は運転時の開いた状態である。
【0022】
図6に示すように、下部吸い込み部4bの位置を本体1の底辺から高さh、スタビライザ7の舌部上部のガイダ部7aの最先端の高さH、とすると h<H の関係が成立する。このような、下流に配置されている主な吸込み領域を前記スタビライザの先端より下方に設置した形態で、第2及び第3の実施の形態が設けられたものである。
【0023】
このような形態の場合、下部吸い込み部4bからの吸い込み流れ(破線矢印)は、熱交換器の下部を通過してスタビライザ7の舌部上部のガイダ部7aの熱交換器側を沿う流れが著しく増加する。従って、スタビライザのファン側に沿う漏れとの合流を円滑にすることにより、低騒音化と風量性能の効果が顕著に得られる。
【0024】
【発明の効果】
以上から、スタビライザ舌部からファンの回転方向に誘引される流れは、スタビライザの舌部上部の最先端部の尖端付近で、殆どファンに吸い込まれる。すなわち、漏れ流れが殆どなく風量性能が向上する。また、最先端部にアールを設けることにより、僅かな漏れ流れについても、乱れを抑制して騒音低減の効果を得る。よって、風量性能の向上と騒音の低減の両者の効果を得る。
【図面の簡単な説明】
【図1】本発明の第1の実施の形態の室内ユニットの外観斜視図
【図2】同室内ユニットの断面略図
【図3】本発明の第1の実施の形態の図2のA部拡大断面略図
【図4】本発明の第2の実施の形態の図2のA部拡大断面略図
【図5】本発明の第3の実施の形態の室内ユニットの断面略図
【図6】同室内ユニットの吸い込み部付近の拡大断面略図
【図7】従来の室内ユニットの外観斜視図
【図8】(a)従来の室内ユニットの断面略図
(b)従来の室内ユニットの要部拡大断面図
【符号の説明】
1 空気調和機本体
2 台枠
3 前面カバー
4 吸い込みグリル
5 ファン(クロスフローファン)
6a,b,c 熱交換器
7 スタビライザ
7a (スタビライザ)ガイダ部
7b (スタビライザ)舌部
8 突端
9 尖端
10 最短距離点
[0001]
[Industrial applications]
The present invention relates to an indoor unit of an air conditioner used for air conditioning of a house or the like.
[0002]
[Prior art]
Hereinafter, an indoor unit of a conventional air conditioner will be described (for example, see Patent Document 1).
[0003]
As shown in FIG. 7, the main body 1 of the air conditioner includes a frame 2 and a front cover 3 attached to the front of the frame 2. Suction grill 4 is provided. As shown in FIG. 8A, heat exchangers 6a and 6b which are folded in two so as to surround the entire area as viewed from the center of the cross flow fan 5 are provided.
[0004]
The conventional stabilizer 7 gradually increases the distance between the upper guide 7a of the tongue and the fan 5 from the tip 8 to the tip 9 of the upper guide 7a of the upper tongue. The distance between the portion 7a and the heat exchanger 6a is gradually increased from the shortest distance point 10 where the distance between the portion 7a and the heat exchanger 6a to the point 9 is gradually increased.
[0005]
With this configuration, as shown in FIG. 8B, in the guider 7 a at the upper portion of the tongue extending in the rotation direction of the fan 5 of the stabilizer 7, the point from the tip 8, which is the shortest point with the fan 5, is directed toward the tip 9. As a result, an air leakage flow indicated by a dotted arrow occurs. As a result, the air volume performance deteriorates, and the noise rises slightly due to the turbulence of the leakage flow.
[0006]
Further, the air flowing from the lower part of the heat exchanger 6a, when flowing into the fan 5 along the portion of the guide part 7a at the upper part of the tongue of the stabilizer 7 extending in the rotation direction of the fan 5, promotes the disturbance of the leakage flow. The noise rises.
[0007]
[Patent Document 1]
JP-A-8-61685 [0008]
[Problems to be solved by the invention]
As described above, in the conventional configuration, the air flow performance is deteriorated due to the occurrence of the air leakage flow from the protruding end 8 of the stabilizer 7, and the disturbance of the leakage flow leads to an increase in noise, and the lower part of the heat exchanger 6 a The flow of air from the air will promote the turbulence of the leakage flow, leading to an increase in noise. That is, there is a problem that the air volume performance decreases and the noise increases.
[0009]
An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an indoor unit of an air conditioner that prevents an increase in noise due to an air flow near the tip of a stabilizer and does not reduce air volume performance.
[0010]
[Means for Solving the Problems]
In order to achieve this object, an indoor unit of an air conditioner of the present invention is an indoor unit of an air conditioner including a cross flow fan, a stabilizer, a rear guider, and a heat exchanger, wherein the stabilizer is a blowout unit. On the side of the cross flow fan extending in the rotation direction of the fan from the tongue forming the portion to the tip, the distance between the cross flow fan and the stabilizer is gradually reduced, and a rounded portion is formed at the tip of the stabilizer. So that the distance from the fan to the tip of the stabilizer is minimized.
[0011]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
The same reference numerals are given to the same components as those described in the related art, and description thereof will be omitted.
[0013]
(First Embodiment)
As shown in FIG. 1, a main body 1 of the air conditioner includes a frame 2 and a front cover 3 attached to the front of the frame 2, and a suction grill is provided above the frame 2 and the front cover 3. 4 are provided. Further, as shown in FIG. 2, heat exchangers 6a, 6b, 6c are arranged so as to surround the entire area when viewed from the center of the fan 5.
[0014]
FIG. 3 is an enlarged view of an arrow part in FIG. As shown in FIG. 3, the stabilizer 7 of the present embodiment is provided with a radius R at the foremost portion of the guide portion 7 a on the upper portion of the tongue, and from the tip 9 of the foremost portion toward the stabilizer tongue 7 b. The distance between the guider 7a at the upper part of the tongue and the fan 2 is gradually increased. That is, assuming that the distance between the tip 9 at the foremost end and the fan 2 is S1, and the distance between the stabilizer tongue 7b and the fan 2 is S2, the relationship of S1 <S2 is established.
[0015]
Due to this shape, the flow (dashed arrow) drawn from the stabilizer tongue 7b in the rotation direction of the fan 2 is almost sucked into the fan 5 near the tip 9 at the foremost end of the upper part of the stabilizer tongue. That is, there is almost no leakage flow, and the air volume performance is improved. Further, by providing the radius R at the forefront, the turbulence of the leakage flow is also suppressed, and the flow smoothly merges with the flow from the heat exchanger side, thereby obtaining an effect of noise reduction. Therefore, both effects of improving the air volume performance and reducing the noise can be obtained.
[0016]
(Second embodiment)
FIG. 4 is an enlarged view of an arrow part in FIG. As shown in FIG. 4, in the present embodiment, the configuration of the first embodiment is provided with a radius r that is convex toward the fan near the tip of the guide portion 7 a above the tongue of the stabilizer 7. From the point where the distance to the fan is closest in the radius r portion, the distance between the guider 7a at the upper part of the tongue and the fan 2 is gradually increased toward the stabilizer tongue 7b. That is, assuming that the distance from the fan to the radius r portion is S1, and the distance between the stabilizer tongue 7b and the fan 2 is S2, the relationship of S1 <S2 is established.
[0017]
At the same time, the thickness of the guide portion 7a on the upper portion of the tongue of the stabilizer 7 is gradually reduced from the tongue to the foremost portion. That is, assuming that the thickness of each portion shown in FIG. 4 is T1, T2, and T3, the relationship of T3 <T2 <T1 is established.
[0018]
The flow (dashed arrow) drawn from the stabilizer tongue 7b in the rotation direction of the fan 2 due to the shape of the radius r portion is sucked into the fan 5 by suppressing the turbulent flow component at the radius r portion above the tongue portion of the stabilizer. As a result, noise can be reduced.
[0019]
In addition, since the thickness of the stabilizer 7 is gradually reduced in the rotation direction of the cross flow fan from the tongue 7b forming the blowout portion to the tip, the leakage flow along the fan side of the stabilizer and the heat exchanger The inflows along the sides merge smoothly. That is, by gradually reducing the thickness of the stabilizer in both flows, the flow becomes almost the same in the directional component near the confluence, that is, near the foremost end, and the loss due to the confluence can be reduced.
[0020]
Further, by providing a pointed tip with a radius that protrudes toward the fan at the foremost end thereof, peeling of the trailing edge is suppressed. The protrusion on the fan side can suppress the separation of the leak flow having a slightly higher wind speed. Further, the original function of almost eliminating the leakage flow can be secured.
[0021]
(Third embodiment)
As shown in FIG. 5, in the main body 1 of the air conditioner, a main suction portion is constituted by an upper suction portion 4a and a lower suction portion 4b of the main body 1, and a panel 11 is mounted on a front portion of the main body 1 and a lever is provided. 12 can be opened and closed, and FIG. 5 shows an open state during operation.
[0022]
As shown in FIG. 6, when the position of the lower suction portion 4 b is a height h from the bottom of the main body 1 and the height H at the forefront of the guide portion 7 a at the upper portion of the tongue of the stabilizer 7, a relationship of h <H is established. I do. The second and third embodiments are provided in such a manner that such a main suction area disposed downstream is provided below the tip of the stabilizer.
[0023]
In the case of such a configuration, the suction flow (dashed arrow) from the lower suction portion 4b significantly flows along the heat exchanger side of the guide portion 7a on the tongue upper portion of the stabilizer 7 through the lower portion of the heat exchanger. To increase. Therefore, by smoothly joining the stabilizer and the leak along the fan side, the effects of noise reduction and air volume performance are remarkably obtained.
[0024]
【The invention's effect】
From the above, the flow induced in the rotation direction of the fan from the stabilizer tongue is almost sucked into the fan near the tip of the tip of the upper portion of the stabilizer tongue. That is, there is almost no leakage flow, and the air volume performance is improved. In addition, by providing a radius at the forefront, even for a slight leakage flow, turbulence is suppressed and a noise reduction effect is obtained. Therefore, both effects of improving the air volume performance and reducing the noise are obtained.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an indoor unit according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the indoor unit. FIG. 3 is an enlarged view of a portion A in FIG. 2 of the first embodiment of the present invention. FIG. 4 is an enlarged schematic cross-sectional view of a portion A in FIG. 2 of a second embodiment of the present invention. FIG. 5 is a schematic cross-sectional view of an indoor unit according to a third embodiment of the present invention. 7 is an external perspective view of a conventional indoor unit. FIG. 8A is a schematic cross-sectional view of a conventional indoor unit. FIG. 8B is an enlarged cross-sectional view of a main part of the conventional indoor unit. Description】
DESCRIPTION OF SYMBOLS 1 Air conditioner main body 2 Underframe 3 Front cover 4 Suction grill 5 Fan (cross flow fan)
6a, b, c Heat exchanger 7 Stabilizer 7a (Stabilizer) Guide part 7b (Stabilizer) tongue part 8 Protrusion 9 Point 10 Point 10

Claims (3)

本体内にクロスフローファンと、スタビライザと、リアガイダと、熱交換器を備えた空気調和機の室内ユニットであって、前記スタビライザは、吹き出し部を形成する舌部から先端部に前記ファンの回転方向に伸びた前記クロスフローファン側において、前記クロスフローファンと前記スタビライザの距離が徐々に減少して、前記スタビライザの最先端部にアール部を設け、前記スタビライザの最先端部でクロスフローファンとの距離が最短となることを特徴とした空気調和機の室内ユニット。An indoor unit of an air conditioner including a cross flow fan, a stabilizer, a rear guider, and a heat exchanger in the main body, wherein the stabilizer rotates in a rotational direction of the fan from a tongue forming a blowing portion to a tip end. The distance between the cross flow fan and the stabilizer is gradually reduced on the side of the cross flow fan that has been extended to provide a rounded portion at the foremost portion of the stabilizer. An indoor unit of an air conditioner characterized by the shortest distance. 本体内にクロスフローファンと、スタビライザと、リアガイダと、熱交換器を備えた空気調和機の室内ユニットであって、前記スタビライザは、吹き出し部を形成する舌部から先端部に前記ファンの回転方向に伸びた前記クロスフローファン側において、前記スタビライザの肉厚が、吹き出し部を形成する舌部から先端部に前記クロスフローファンの回転方向に徐々に減少して、その最先端部に前記クロスフローファン側に凸となるアール付きの尖端を設けた構成であることを特徴とした空気調和機の室内ユニット。An indoor unit of an air conditioner including a cross flow fan, a stabilizer, a rear guider, and a heat exchanger in the main body, wherein the stabilizer rotates in a rotational direction of the fan from a tongue forming a blowing portion to a tip end. The thickness of the stabilizer gradually decreases in the direction of rotation of the cross flow fan from the tongue forming the blow-out portion to the tip on the side of the cross flow fan that extends to the cross flow fan. An indoor unit for an air conditioner, characterized in that a tip with a radius that is convex on the fan side is provided. 前記室内機が前面カバーの少なくとも下端部から空気を吸込む構成であって、前記前面グリルの下端部の吸込み口を前記スタビライザの先端より下方に配したことを特徴とする請求項1または2記載の空気調和機の室内ユニット。3. The indoor unit according to claim 1, wherein the indoor unit sucks air from at least a lower end of the front cover, and a suction port at a lower end of the front grill is disposed below a tip of the stabilizer. 4. Indoor unit of air conditioner.
JP2003068037A 2003-03-13 2003-03-13 Indoor unit of air conditioner Pending JP2004278844A (en)

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JP2020204430A (en) * 2019-06-17 2020-12-24 パナソニックIpマネジメント株式会社 Air conditioner
CN111997936B (en) * 2020-08-27 2021-04-06 华中科技大学 Adjustable volute tongue device and cross-flow fan

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