JP2013530372A - Air conditioner indoor unit - Google Patents

Air conditioner indoor unit Download PDF

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Publication number
JP2013530372A
JP2013530372A JP2013516970A JP2013516970A JP2013530372A JP 2013530372 A JP2013530372 A JP 2013530372A JP 2013516970 A JP2013516970 A JP 2013516970A JP 2013516970 A JP2013516970 A JP 2013516970A JP 2013530372 A JP2013530372 A JP 2013530372A
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Prior art keywords
air
air conditioner
discharge port
indoor unit
front panel
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JP2013516970A
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JP6042807B2 (en
Inventor
ジャーン，ヒュイ
チェン，ショーリン
ヤーン，ジャンクン
ジ，ウェンウェイ
メン，ジ
リ，ジェン
ツァオ，リュー
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air-Flow Control Members (AREA)

Abstract

【課題】パフォーマンスの最適化の効果の顕著なエアコンの室内機を提供すること。
【解決手段】
エアコンのサイド、上部を囲んで、フロントパネルを取り付けるパネルボディー（２）と、エアコン後部を囲むリアハウジング（１）と、前方にありパネルボディーと密接に接合しているフロントパネル（３）とを含むエアコンの室内機であって、リアハウジング（１）、パネルボディー（２）及びフロントパネル（３）に囲まれたエアコンのキャビティが形成され、熱交換器、制御素子及び通風部材がいずれもその中に配置されている。フロントパネル（３）の下部に空気排出口（４）が配置され、ディフレクタープレート（５）がフロントパネル（３）に取り付けられ、又はパネルボディーに位置して、空気排出口（４）を開閉させるようにする。空気排出口（４）の上部に空気排出口（４）へ伸びているエアシールドリブ（８）が設けられている。
【選択図】図２To provide an indoor unit of an air conditioner having a remarkable effect of optimizing performance.
[Solution]
A panel body (2) that surrounds the side and upper part of the air conditioner and attaches a front panel, a rear housing (1) that surrounds the rear of the air conditioner, and a front panel (3) that is in front and is closely joined to the panel body An air conditioner indoor unit including a rear housing (1), a panel body (2), and a front panel (3) surrounded by an air conditioner cavity, each of which includes a heat exchanger, a control element, and a ventilation member Is placed inside. An air discharge port (4) is arranged at the lower part of the front panel (3), and the deflector plate (5) is attached to the front panel (3) or located on the panel body to open and close the air discharge port (4). Like that. An air shield rib (8) extending to the air discharge port (4) is provided above the air discharge port (4).
[Selection] Figure 2

Description

本発明は、エアコンの室内機に関し、具体的には、パフォーマンス最適化の効果の顕著なエアコンの室内機に関する。   The present invention relates to an indoor unit of an air conditioner, and more specifically to an indoor unit of an air conditioner that has a remarkable effect of performance optimization.

通常、エアコンは、空気冷却器、加熱器又は空気清浄器により、部屋を涼しく、又は暖かくし、空気を浄化させ、内部環境をより快適にする装置である。このようなエアコンにおいて、通風装置、空気冷却装置、加熱装置及び空気清浄器が配置され、前記通風装置は、空気を室内にて強制的に循環させ、室内の空気を吸収し、熱交換又は空気浄化をしてから、空気を室内に排出するものである。
従来の技術において、エアコンは絶えず改良されている。通常、エアコンの室内機は、エアコンのサイドとリアを囲んでいるリアハウジング及びフロントに位置しリアハウジングと密着に接合されているパネルボディーを備え、エアコンのキャビティが前記リアハウジングとパネルボディーによって囲まれて形成され、熱交換器、制御ユニット、通風部材がいずれも前記キャビティ内に配置されている。前記パネルボディーが通常、ネジ又はフックによりリアハウジングに固定されている。
エアコンの市場が日増しに成熟してくることにつれて、エアコンの省エネ機能に対する要求もより高くなっている。このような傾向に応えるように、エアコンに対して様々な改良をして、EER（エネルギー消費効率）の高いエアコンを次々と開発しなければならない。 In general, an air conditioner is a device that cools or warms a room, purifies air, and makes an internal environment more comfortable by an air cooler, a heater, or an air purifier. In such an air conditioner, a ventilation device, an air cooling device, a heating device, and an air purifier are arranged. The ventilation device forcibly circulates the air indoors, absorbs the indoor air, and exchanges heat or air. After purifying, the air is discharged into the room.
In the prior art, air conditioners are constantly being improved. In general, an indoor unit of an air conditioner includes a rear housing that surrounds the side and rear of the air conditioner, and a panel body that is positioned on the front and is in close contact with the rear housing, and the cavity of the air conditioner is surrounded by the rear housing and the panel body. The heat exchanger, the control unit, and the ventilation member are all arranged in the cavity. The panel body is usually fixed to the rear housing by screws or hooks.
As the market for air conditioners matures day by day, the demand for energy saving functions of air conditioners has increased. In response to these trends, air conditioners with high EER (energy consumption efficiency) must be developed one after another by making various improvements to air conditioners.

本発明は、構造が簡単で、エアコンのパフォーマンスが改良され、生産効率が向上され、製品の信頼性が確保されるエアコンの室内機を提供することを目的としている。   An object of the present invention is to provide an air conditioner indoor unit that has a simple structure, improves the performance of the air conditioner, improves production efficiency, and ensures product reliability.

上記目的を達成するために、本発明は以下の技術的手段を採用している。   In order to achieve the above object, the present invention employs the following technical means.

エアコンのサイドと上部を囲んで、フロントパネルを取り付けるパネルボディーと、エアコンの後部を囲むリアハウジングと前方に位置しパネルボディーと密着に接合しているフロントパネルを備え、前記リアハウジング、パネルボディー及びフロントパネルで囲まれたエアコンのキャビティが形成され、前記フロントパネルの下部に空気排出口が配置され、ディフレクタープレートがフロントパネルに取り付けられ、又はパネルボディーに位置して、空気排出口を開閉するようにするエアコンの室内機であって、前記空気排の上部にエアシールドリブが設けられ、前記エアシールドリブが空気排出口の上部から空気排出口へ伸びている。   A panel body that surrounds the side and upper part of the air conditioner and is attached with a front panel; a rear housing that encloses the rear part of the air conditioner; and a front panel that is located in front and is in close contact with the panel body; A cavity of the air conditioner surrounded by the front panel is formed, an air exhaust port is arranged at the lower part of the front panel, a deflector plate is attached to the front panel, or located on the panel body so as to open and close the air exhaust port The air shield rib is provided with an air shield rib at the upper part of the air exhaust, and the air shield rib extends from the upper part of the air exhaust port to the air exhaust port.

本発明の有益な効果は以下の通りである。 The beneficial effects of the present invention are as follows.

本発明によるエアコンの室内機は、前記空気排の上部にエアシールドリブが設けられ、前記エアシールドリブが空気排出口の上部から空気排出口へ伸び出している。このように、空気排出口あたりの温度の均一化を確保でき、局部の温度差が大きいことにより凝縮液を形成することが避けられるので、凝縮の発生を回避することができる。 In the indoor unit of an air conditioner according to the present invention, an air shield rib is provided at the upper part of the air exhaust, and the air shield rib extends from the upper part of the air exhaust port to the air exhaust port. Thus, the uniformity of the temperature per air outlet can be ensured, and the formation of condensate can be avoided due to the large temperature difference between the local portions, so that the occurrence of condensation can be avoided.

本発明に係わるエアコンの室内機の立体構造を示す図である。It is a figure which shows the three-dimensional structure of the indoor unit of the air conditioner concerning this invention. 本発明に係わるエアコンの室内機の渦流形成装置の位置構造を示す図である。It is a figure which shows the position structure of the eddy current formation apparatus of the indoor unit of the air conditioner concerning this invention. 本発明に係わるエアコンの室内機の空気排出口の構造を示す図である。It is a figure which shows the structure of the air discharge port of the indoor unit of the air conditioner concerning this invention. 本発明に係わるエアコンの室内機のパネルボディーの正面の構造を示す図である。It is a figure which shows the structure of the front of the panel body of the indoor unit of the air conditioner concerning this invention. 本発明に係わるエアコンの室内機のパネルボディーの立体構造を示す図である。It is a figure which shows the three-dimensional structure of the panel body of the indoor unit of the air conditioner concerning this invention. 図４のＡ-Ａの断面構造を示す図である。It is a figure which shows the cross-sectional structure of AA of FIG. 本発明に係わるエアコンの室内機のエアシールドリブの位置の構造を示す図である。It is a figure which shows the structure of the position of the air shield rib of the indoor unit of the air conditioner concerning this invention. 本発明に係わるエアコンの室内機のエアシールドリブの実施形態１の構造を示す図である。It is a figure which shows the structure of Embodiment 1 of the air shield rib of the indoor unit of the air conditioner concerning this invention. 本発明に係わるエアコンの室内機のエアシールドリブの実施形態２の構造を示す図である。It is a figure which shows the structure of Embodiment 2 of the air shield rib of the indoor unit of the air conditioner concerning this invention. 本発明に係わるエアコンの室内機のエアシールドリブの実施形態３の構造を示す図である。It is a figure which shows the structure of Embodiment 3 of the air shield rib of the indoor unit of the air conditioner concerning this invention.

本発明において、図１、２、３、４、５、６に示すように、エアコンのサイド、上部を囲んで、フロントパネルを取り付けるパネルボディー２と、エアコンの後部を囲むリアハウジング１と、前方に位置しパネルボディーと密接に接合しているフロントパネル３とを含むエアコンの室内機が開示され、前記リアハウジング１、パネルボディー２及びフロントパネル３で囲まれるエアコンのキャビティが形成され、熱交換器、制御素子、通風部材がいずれも前記キャビティ内に配置され、前記フロントパネル３の下部に空気排出口４が配置され、空気排出口４を開閉させるようにディフレクタープレート５がフロントパネル３に取り付けられ、又は、パネルボディー２に位置する。 In the present invention, as shown in FIG. And an air conditioner indoor unit including a front panel 3 located in close contact with the panel body, and a cavity of the air conditioner surrounded by the rear housing 1, the panel body 2 and the front panel 3 is formed, and heat exchange is performed. A ventilator, a control element, and a ventilation member are all disposed in the cavity, an air discharge port 4 is disposed at a lower portion of the front panel 3, and a deflector plate 5 is attached to the front panel 3 so as to open and close the air discharge port 4. Or located in the panel body 2.

前記空気排出口４の底部に渦流形成装置６が設けられる。前記渦流形成装置６が水平方向に沿ってフロントパネル３又はパネルボディー２に固定され、長尺ストリップの構造になる。前記渦流形成装置６が少なくとも１本の水平方向の凹溝７を含み、凹溝７の凹面方向とエアコンの空気排出方向とが交差して角度をなしている。 A vortex generator 6 is provided at the bottom of the air outlet 4. The eddy current forming device 6 is fixed to the front panel 3 or the panel body 2 along the horizontal direction to form a long strip structure. The eddy current forming device 6 includes at least one horizontal concave groove 7, and the concave surface direction of the concave groove 7 and the air discharge direction of the air conditioner intersect to form an angle.

前記渦流形成装置６は１本の長尺ストリップ構造の部材であり、水平方向に沿って空気排出口４の底面に密接に貼り付けて形成されることが好ましい。   The eddy current forming device 6 is a member having a single long strip structure, and is preferably formed by sticking closely to the bottom surface of the air outlet 4 along the horizontal direction.

前記渦流形成装置６は２本以上の長尺ストリップ構造の部品であり、水平方向に沿って順次に空気排出口４の底面に密接に貼り付けて組合わされることが好ましい。   The eddy current forming device 6 is a component having two or more long strip structures, and is preferably combined by being closely attached to the bottom surface of the air outlet 4 sequentially in the horizontal direction.

前記渦流形成装置６の水平方向の幅サイズは空気排出口４の幅サイズ以下である。   The horizontal width size of the vortex forming device 6 is equal to or smaller than the width size of the air discharge port 4.

図７に示すように、前記空気排出口４の上部に、エアシールドリブ８が設けられている。 As shown in FIG. 7, an air shield rib 8 is provided on the air discharge port 4.

前記エアシールドリブ８が空気排出口４の上部より空気排出口４へ伸び出している。   The air shield rib 8 extends from the upper part of the air discharge port 4 to the air discharge port 4.

前記エアシールドリブ８は１本の細長いリブ状構造の部品であり、水平方向に沿って空気排出口４の上部に密接に貼り付けて形成され、エアシールドリブ８の水平方向の幅サイズは空気排出口４の幅サイズ以下である。   The air shield rib 8 is a single elongated rib-shaped part, and is formed by being closely attached to the upper portion of the air discharge port 4 along the horizontal direction. The horizontal width size of the air shield rib 8 is air. It is below the width size of the discharge port 4.

熱交換器を経て排出された空気流がエアシールドリブ８を通過したとき、気流の圧力がエアシールドリブ８によって変えられ、気流の運動方向が、遮られて変更されることで、空気排出口の温度の均一化を確保し、局部の温度差が大きいことにより凝縮液を形成することを避け、凝縮の発生をも回避することができる。   When the air flow discharged through the heat exchanger passes through the air shield rib 8, the pressure of the air flow is changed by the air shield rib 8, and the direction of movement of the air flow is blocked and changed, so that the air discharge port Therefore, it is possible to avoid the formation of condensate and avoid the occurrence of condensation due to the large temperature difference in the local area.

図８に示すように、パネルボディー２には、フロントパネル３を取り付ける係止口と、リアハウジング１を固定する止め口が設けられる。パネルボディー２が空気排出口４の上部へ伸びることでエアシールドリブ８が形成されて、前記フロントパネル３の底部とエアシールドリブ８との間に水膜領域９が形成されている。   As shown in FIG. 8, the panel body 2 is provided with a locking port for attaching the front panel 3 and a locking port for fixing the rear housing 1. An air shield rib 8 is formed by the panel body 2 extending to the upper portion of the air discharge port 4, and a water film region 9 is formed between the bottom of the front panel 3 and the air shield rib 8.

図９に示すように、リアハウジング１が空気排出口４の上部へ伸びることでエアシールドリブ８が形成され、パネルボディー２がリアハウジング１により空気排出口４の後方に囲まれている。 As shown in FIG. 9, the rear housing 1 extends to the upper portion of the air discharge port 4 to form an air shield rib 8, and the panel body 2 is surrounded by the rear housing 1 behind the air discharge port 4.

図１０に示すように、エアシールドリブ８は、フロントパネル３に貼り付けられ、又はフロントパネル３より空気排出口４の上部へ伸びて形成されている。 As shown in FIG. 10, the air shield rib 8 is affixed to the front panel 3 or extends from the front panel 3 to the upper portion of the air discharge port 4.

本発明の実施形態は、本発明を限定するものではない。当業者にとって、本発明の精神や原則を逸脱しないで可能ないずれの変更、置換、改良なども本発明の保護範囲内に含まれる。   The embodiments of the present invention are not intended to limit the present invention. For those skilled in the art, any changes, substitutions, improvements, etc. that can be made without departing from the spirit and principle of the present invention are included in the protection scope of the present invention.

１：リアハウジング、２：パネルボディー、３：フロントパネル、４：空気排出口、５：ディフレクタープレート、６：渦流形成装置、７：凹溝、８：エアシールドリブ、9：水膜領域。 1: rear housing, 2: panel body, 3: front panel, 4: air discharge port, 5: deflector plate, 6: vortex generator, 7: concave groove, 8: air shield rib, 9: water film region.

Claims (10)

エアコンのサイドと上部を囲んで、フロントパネルを取り付けるパネルボディー（２）と、エアコンの後部を囲むリアハウジング（１）と、前方に位置しパネルボディーと密接に接合しているフロントパネル（３）と、を含み、前記リアハウジング（１）、パネルボディー（２）及びフロントパネル（３）で囲まれたエアコンのキャビティが形成され、前記フロントパネル（３）の下部に空気排出口（４）が配置され、ディフレクタープレート（５）がフロントパネル（３）に取り付けられ、又はパネルボディーに位置して、空気排出口（４）を開閉させるエアコンの室内機であって、
前記空気排出口（４）の上部にエアシールドリブ（８）が設けられ、前記エアシールドリブ（８）が空気排出口（４）の上部より空気排出口（４）へ伸びていることを特徴とするエアコンの室内機。 A panel body (2) for mounting the front panel surrounding the side and top of the air conditioner, a rear housing (1) surrounding the rear of the air conditioner, and a front panel (3) located in front and intimately joined to the panel body And an air conditioner cavity surrounded by the rear housing (1), the panel body (2), and the front panel (3) is formed, and an air discharge port (4) is formed at a lower portion of the front panel (3). An air conditioner indoor unit that is arranged and has a deflector plate (5) attached to the front panel (3) or located on the panel body and opens and closes the air outlet (4),
An air shield rib (8) is provided at the upper part of the air discharge port (4), and the air shield rib (8) extends from the upper part of the air discharge port (4) to the air discharge port (4). Air conditioner indoor unit. 前記エアシールドリブ（８）は１本の長尺ストリップの構造部材であり、水平方向に沿って、空気排出口（４）の上部に密接に貼り付けて形成され、エアシールドリブ（８）の水平方向の幅サイズが空気排出口（４）の幅サイズ以下である
ことを特徴とする請求項１に記載のエアコンの室内機。 The air shield rib (8) is a structural member of one long strip, and is formed by sticking closely to the upper part of the air discharge port (4) along the horizontal direction. The indoor unit of an air conditioner according to claim 1, wherein the horizontal width size is equal to or smaller than the width size of the air discharge port (4). 前記パネルボディー（２）には、フロントパネル（３）を取り付ける係止口と、リアハウジング（１）を固定する止め口が設けられ、パネルボディー（２）が空気排出口（４）の上部へ伸びることでエアシールドリブ（８）が形成されて、前記フロントパネル（３）の底部とエアシールドリブ（８）との間に水膜領域（9）が形成されていることを特徴とする請求項２に記載のエアコンの室内機。   The panel body (2) is provided with a locking port for attaching the front panel (3) and a locking port for fixing the rear housing (1), and the panel body (2) is located above the air discharge port (4). The air shield rib (8) is formed by extending, and a water film region (9) is formed between the bottom of the front panel (3) and the air shield rib (8). Item 3. An air conditioner indoor unit according to Item 2. 前記リアハウジング（１）が空気排出口（４）の上部へ伸びることで、エアシールドリブ（８）が形成され、パネルボディー（２）がリアハウジング（１）により空気排出口（４）の後方に囲まれていることを特徴とする請求項２に記載のエアコンの室内機。   The rear housing (1) extends to the upper part of the air discharge port (4) to form an air shield rib (8), and the panel body (2) is located behind the air discharge port (4) by the rear housing (1). The indoor unit of an air conditioner according to claim 2, wherein the indoor unit is surrounded by. 前記エアシールドリブ（８）は、フロントパネル（３）に貼り付け、又は、フロントパネル（３）により空気排出口（４）の上部へ伸びて形成されることを特徴とする請求項２に記載のエアコンの室内機。   The said air shield rib (8) is affixed on a front panel (3), or is extended and formed in the upper part of an air discharge port (4) by the front panel (3), Air conditioner indoor unit. 前記空気排出口（４）の底部に、渦流形成装置（６）が設けられていることを特徴とする請求項１に記載のエアコンの室内機。   The indoor unit of an air conditioner according to claim 1, wherein a vortex generator (6) is provided at the bottom of the air discharge port (4). 前記渦流形成装置（６）が水平方向に沿ってフロントパネル（３）又はパネルボディー（２）に設けられ、長尺ストリップ構造になり、前記渦流形成装置（６）が少なくとも１本の水平方向の凹溝（７）を含み，凹溝（７）の凹面方向とエアコンの空気排出方向とが交差して角度をなしていることを特徴とする請求項６に記載のエアコンの室内機。   The eddy current forming device (6) is provided on the front panel (3) or the panel body (2) along the horizontal direction, has a long strip structure, and the eddy current forming device (6) has at least one horizontal direction The indoor unit for an air conditioner according to claim 6, comprising a groove (7), wherein the concave surface direction of the groove (7) and the air discharge direction of the air conditioner intersect to form an angle. 前記渦流形成装置（６）は１本の長尺ストリップ構造の部材であり、水平方向に沿って空気排出口（４）の底面に密接に貼り付けて形成されていることを特徴とする請求項６に記載のエアコンの室内機。   The eddy current forming device (6) is a member having a long strip structure, and is formed by being closely attached to a bottom surface of an air discharge port (4) along a horizontal direction. 6. An air conditioner indoor unit according to 6. 前記渦流形成装置（６）は２本以上の長尺ストリップ構造の部材であり、水平方向に沿って順次に空気排出口（４）の底面に密接に貼り付けて組合わされることを特徴とする請求項６に記載のエアコンの室内機。   The eddy current forming device (6) is a member having two or more long strip structures, and is combined in close contact with the bottom surface of the air discharge port (4) sequentially in the horizontal direction. The indoor unit of the air conditioner of Claim 6. 前記渦流形成装置（６）の水平方向の幅サイズは空気排出口（４）の幅サイズ以下であることを特徴とする請求項８又は９に記載のエアコンの室内機。 The indoor unit of an air conditioner according to claim 8 or 9, characterized in that a horizontal width size of the vortex generator (6) is equal to or smaller than a width size of the air discharge port (4).
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