JP2011226725A - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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JP2011226725A
JP2011226725A JP2010098508A JP2010098508A JP2011226725A JP 2011226725 A JP2011226725 A JP 2011226725A JP 2010098508 A JP2010098508 A JP 2010098508A JP 2010098508 A JP2010098508 A JP 2010098508A JP 2011226725 A JP2011226725 A JP 2011226725A
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indoor unit
flow fan
mixed flow
air
air conditioner
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Koichi Sakai
浩一 酒井
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Panasonic Corp
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To achieve an indoor unit reduced in size and weight, and improved in air blowing performance, wherein the indoor unit refers to an indoor unit of an air conditioner configured to blow air from a plurality of air blowing openings provided on the circumference of a mixed flow fan.SOLUTION: The indoor unit includes an orifice 10 provided, on the blow-out side (the downstream side) thereof, with a hollow part 10a having an opening 11 formed therein. The hollow part 10a provides a negative pressure to cause a blown-out air to be drawn into the mixed flow fan 5 radially, which therefore allows the air to be blown out smoothly from the blow-out openings on the four directions of the indoor unit, i.e. horizontal and vertical directions, and thus, the air blowing performance is improved.

Description

本発明は、斜流ファンの周囲に設けた複数の吹出し口から空気を吹き出す空気調和機の室内ユニットに関するものである。   The present invention relates to an indoor unit of an air conditioner that blows out air from a plurality of outlets provided around a mixed flow fan.

従来、この種の空気調和機の室内ユニットとして、斜流ファンと、斜流ファンの前面に設けた熱交換器と、左右に設けた吹出し口を備え、熱交換器を通して室内空気を吸い込み、熱交換した空気は斜流ファンの全周から径方向への速度成分を有して斜め後方に送風し、斜流ファン後方の風路壁面に設けた円弧状の複数の案内羽根によって、左右の吹出し口の方向に円滑に誘導整流して、吹出し口から室内に吹き出すものがある(特許文献1)。   Conventionally, an indoor unit of this type of air conditioner has a mixed flow fan, a heat exchanger provided in front of the mixed flow fan, and outlets provided on the left and right sides. The exchanged air has a velocity component in the radial direction from the entire circumference of the mixed flow fan and blows obliquely rearward, and the left and right blowouts are performed by a plurality of arc-shaped guide vanes provided on the air channel wall behind the mixed flow fan. There is one that smoothly rectifies and rectifies in the direction of the mouth and blows out into the room from the outlet (Patent Document 1).

特開平6−137578号公報JP-A-6-137578

しかしながら、前記従来のような円弧状の複数の案内羽根を装着する構成では、風が斜流ファン後方の風路壁面に到達してから左右方向に分岐されるため、損失が大きく送風性能が悪化する。また、吹出し口が上下左右の4方向に設けられた4方向吹き出しなどになると、4方向分の案内羽根を装着する必要があるため、室内ユニットが大型化する。   However, in the configuration in which a plurality of arc-shaped guide vanes as in the conventional case is mounted, since the wind branches to the left and right after reaching the air passage wall surface behind the mixed flow fan, the loss is large and the air blowing performance is deteriorated. To do. In addition, when the outlets are four-way balloons provided in four directions, up, down, left, and right, the guide blades for the four directions need to be mounted, so the indoor unit becomes large.

さらには、複数の案内羽根が必要であり、部品点数が多くなり、組み立てに多くの工数が発生する。部品点数が多い故に、その管理が煩雑となり生産性を低下させることになる。   Furthermore, a plurality of guide vanes are required, the number of parts increases, and a lot of man-hours are required for assembly. Since the number of parts is large, the management becomes complicated and the productivity is lowered.

本発明は、上記従来の課題を解決するもので、本体のコンパクト化、軽量化を図るとともに、送風性能を向上させる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。   SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide an indoor unit of an air conditioner that improves the air blowing performance while reducing the size and weight of the main body.

前記課題を解決するために、本発明の空気調和機の室内ユニットは、オリフィスの吹き出し側(下流側)に開口部を配置した中空部を設けたものである。これにより、その中空部が負圧となり、吹き出された風が、径方向に誘引される。よって、吹出し空気が円滑に流れるようになり、本体を大型化することなく、送風性能が向上する。   In order to solve the above-described problem, the indoor unit of the air conditioner of the present invention is provided with a hollow portion having an opening disposed on the outlet side (downstream side) of the orifice. Thereby, the hollow part becomes a negative pressure, and the blown-out wind is attracted in the radial direction. Therefore, the blown air flows smoothly, and the blowing performance is improved without increasing the size of the main body.

本発明の空気調和機の室内ユニットは、本体のコンパクト化、軽量化を図るとともに、送風性能を向上させることができる。   The indoor unit of the air conditioner according to the present invention can reduce the size and weight of the main body and improve the blowing performance.

本発明の実施の形態1における空気調和機の室内ユニットの斜視図The perspective view of the indoor unit of the air conditioner in Embodiment 1 of this invention 本発明の実施の形態1における空気調和機の室内ユニットの正面図The front view of the indoor unit of the air conditioner in Embodiment 1 of this invention 本発明の実施の形態1における空気調和機の室内ユニットの断面図Sectional drawing of the indoor unit of the air conditioner in Embodiment 1 of this invention 本発明の実施の形態2における空気調和機の室内ユニットの断面図Sectional drawing of the indoor unit of the air conditioner in Embodiment 2 of this invention

第1の発明の空気調和機の室内ユニットは、斜流ファンと、斜流ファンの前面に設けら
れた熱交換器と、斜流ファンの周囲に設けられたオリフィスと、熱交換器を通過した空気を吹き出す複数の吹出し口とを備え、オリフィスの吹き出し部分に開口部を設けることを特徴とする。
The indoor unit of the air conditioner of the first invention has passed through the mixed flow fan, the heat exchanger provided in front of the mixed flow fan, the orifice provided around the mixed flow fan, and the heat exchanger. And a plurality of outlets for blowing out air, and an opening is provided in a blowing part of the orifice.

これによって、空気の流れは、前面に配置されている吸い込みグリルから吸い込まれ、その後方に配置された熱交換器を通過して、モータによって回転している斜流ファンに吸引される。斜流ファンから吹き出された流れは、径方向に大きな成分を有して斜め後方に吹き出される。斜流ファンの外周部を取り囲むように配置したオリフィスにおいて、吹き出し部分に開口部を備えた中空部を設けることにより、この領域が負圧となるため流れの方向が外周方向に助長される。このため、斜流ファンから吹き出された流れは、左右、上下の方向に向くことになり、本体の吹き出し口から吹き出される。   As a result, the air flow is sucked in from the suction grill disposed on the front surface, passes through the heat exchanger disposed behind the suction grille, and is sucked into the mixed flow fan rotating by the motor. The flow blown out from the mixed flow fan has a large component in the radial direction and is blown out obliquely rearward. In the orifice arranged so as to surround the outer peripheral portion of the mixed flow fan, by providing a hollow portion having an opening at the blowing portion, this region becomes negative pressure, so that the flow direction is promoted in the outer peripheral direction. For this reason, the flow blown out from the mixed flow fan is directed in the left-right and up-down directions, and is blown out from the outlet of the main body.

第2の発明の空気調和機の室内ユニットは、特に、第1の発明の斜流ファンの後縁直径を前縁直径より大きくすることを特徴とする。これによって、後縁部分すなわち吹き出し側での遠心力を増加させて、流れの径方向成分を増加させる。また、前縁から後縁にかけて、徐々に直径が大きくなるよう設計されたファンにすると、遠心力が徐々に増加されて、円滑に左右、上下の方向に向くことになり、本体の吹き出し口から吹き出される。   The indoor unit of the air conditioner of the second invention is particularly characterized in that the trailing edge diameter of the mixed flow fan of the first invention is larger than the front edge diameter. Thereby, the centrifugal force at the trailing edge portion, that is, the blowing side is increased, and the radial component of the flow is increased. Also, if the fan is designed so that its diameter gradually increases from the front edge to the rear edge, the centrifugal force will gradually increase, and it will turn smoothly from side to side, up and down, from the outlet of the main unit. Blown out.

第3の発明の空気調和機の室内ユニットは、特に、第1または第2の発明において、斜流ファンを駆動するモータを、斜流ファンと熱交換器の間に配置させたことを特徴とする。本体サイズ、特に奥行きサイズに制限がある場合、このような配置は有効である。すなわち、モータを斜流ファンの前縁で囲む構成となりコンパクト化に役立つ。また、斜流ファンから吹き出された直後の風速は速いため、その風速の速い領域に抵抗体となる部品すなわちモータを配置すると通風抵抗となり大きく風量性能を劣化させることになる。すなわち、モータの設置場所を斜流ファンの吹き出し側から吸い込み側に変えることにより、通風抵抗が減少して送風性能の向上に繋がる。   The indoor unit of the air conditioner of the third invention is characterized in that, in the first or second invention, in particular, the motor for driving the mixed flow fan is disposed between the mixed flow fan and the heat exchanger. To do. Such an arrangement is effective when there is a restriction on the main body size, particularly the depth size. That is, the motor is surrounded by the front edge of the mixed flow fan, which is useful for downsizing. In addition, since the wind speed immediately after being blown out from the mixed flow fan is high, if a component, that is, a motor serving as a resistor is disposed in a region where the wind speed is high, ventilation resistance is generated and the air flow performance is greatly deteriorated. That is, by changing the installation location of the motor from the blow-out side of the mixed flow fan to the suction side, the ventilation resistance is reduced, leading to improvement in the air blowing performance.

(実施の形態1)
図1は本発明の実施の形態1における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正面図、図3は同室内ユニットのA−A断面図である。図1〜図3に、示すように室内ユニットの本体1を外装するように、吸入グリル2、左吹出し口6と、右吹出し口7と、上吹出し口20と、下吹出し口21とが設けられている。左吹出し口6と、右吹出し口7と、上吹出し口20と、下吹出し口21とは、本体1の4方向の側面に設けられている。本体1の内部には、主要部品として、熱交換器3と、斜流ファン5と、オリフィス10と、モータ4とが設けられている。
(Embodiment 1)
1 is a perspective view of an indoor unit of an air conditioner according to Embodiment 1 of the present invention, FIG. 2 is a front view of the indoor unit, and FIG. 3 is a cross-sectional view taken along line AA of the indoor unit. As shown in FIGS. 1 to 3, a suction grill 2, a left outlet 6, a right outlet 7, an upper outlet 20, and a lower outlet 21 are provided so as to cover the body 1 of the indoor unit. It has been. The left outlet 6, the right outlet 7, the upper outlet 20, and the lower outlet 21 are provided on the four side surfaces of the main body 1. Inside the main body 1, a heat exchanger 3, a mixed flow fan 5, an orifice 10, and a motor 4 are provided as main components.

熱交換器3は、吸入グリル2と斜流ファン5の前面側(吸い込み側)に設けられており、斜流ファン5を回転させるためのモータ4は、斜流ファン5の背面側(吹き出し側)に設けられている。また、オリフィス10は、斜流ファン5の周囲に環状に設けられている。オリフィス10の吹き出し部には開口部11が設けられ、オリフィス10の外側に中空部10aを形成している。   The heat exchanger 3 is provided on the front side (suction side) of the suction grill 2 and the mixed flow fan 5, and the motor 4 for rotating the mixed flow fan 5 is disposed on the back side (outlet side) of the mixed flow fan 5. ). The orifice 10 is provided in an annular shape around the mixed flow fan 5. An opening 11 is provided in the blowing portion of the orifice 10, and a hollow portion 10 a is formed outside the orifice 10.

モータ4により回転される斜流ファン5により、居室内の空気を吸い込み、まず、吸入グリル2を通過して熱交換器3に流れ込む。熱交換器3を通過する間に空気が熱交換され、その後、斜流ファン5に流れ込む。斜流ファン5は、径方向に流れる成分が大きいため、左右、上下の4方向に流れる傾向にある。   The mixed flow fan 5 rotated by the motor 4 sucks in the air in the room, and first passes through the suction grill 2 and flows into the heat exchanger 3. The air is heat-exchanged while passing through the heat exchanger 3 and then flows into the mixed flow fan 5. Since the mixed flow fan 5 has a large component flowing in the radial direction, the mixed flow fan 5 tends to flow in the four directions of left and right and up and down.

さらに、本実施の形態では、中空部10aで空気が負圧となるため、斜流ファン5から吹き出された空気は、中空部10aに誘引されて径方向の流れを助長する。この効果によって、円滑な流れ場を形成して、4方向の吹き出し口、左吹出し口6と、右吹出し口7と
、上吹出し口20と、下吹出し口21から空気が吹き出される。この時、円滑な流れ場を形成するが故に、送風性能が向上して、低入力化、低騒音化を図ることができる。
Further, in the present embodiment, since air becomes a negative pressure in the hollow portion 10a, the air blown out from the mixed flow fan 5 is attracted to the hollow portion 10a and promotes the flow in the radial direction. By this effect, a smooth flow field is formed, and air is blown out from the four blowout ports, the left blowout port 6, the right blowout port 7, the upper blowout port 20, and the lower blowout port 21. At this time, since a smooth flow field is formed, the air blowing performance is improved, and low input and low noise can be achieved.

また、斜流ファン5の前縁直径Di、後縁直径Doは、Di<Doの関係となる。すなわち、後縁領域で直径が大きくなるため、遠心力が増加して径方向成分が大きくなり、4方向、すなわち、上下、左右方向に円滑に流れる。また、オリフィス10の吹き出し部分に開口部11を設けることにより、負圧となる中空部10aに吸引され相乗効果により、径方向の流れを助長する。   Further, the front edge diameter Di and the rear edge diameter Do of the mixed flow fan 5 have a relationship of Di <Do. That is, since the diameter increases in the trailing edge region, the centrifugal force increases and the radial component increases, and the flow smoothly flows in four directions, that is, in the vertical and horizontal directions. Further, by providing the opening portion 11 in the blowing portion of the orifice 10, it is sucked into the hollow portion 10a which becomes negative pressure, and the radial flow is promoted by a synergistic effect.

よって、4方向の吹き出し口、左吹出し口6と、右吹出し口7と、上吹出し口20と、下吹出し口21から空気が吹き出される流れは、より円滑となり、さらなる低入力化、低騒音化に繋がる。   Therefore, the flow of the air blown out from the four outlets, the left outlet 6, the right outlet 7, the upper outlet 20, and the lower outlet 21 becomes smoother, further reducing input and noise. Leads to

以上のように、本実施の形態では、斜流ファン5の外周を取り囲むオリフィス10の吹き出し部に開口部11を設けて、中空部10aを配置することで、オリフィス10に沿って流れる空気が、斜流ファン5の径方向成分に誘引される。さらに、中空部10aを設けた開口部11によって、負圧であるが故に空気が誘引され、径方向に流れることになる。   As described above, in the present embodiment, the opening 11 is provided in the blowing portion of the orifice 10 that surrounds the outer periphery of the mixed flow fan 5, and the air flowing along the orifice 10 is provided by arranging the hollow portion 10a. Induced by the radial component of the mixed flow fan 5. Furthermore, air is attracted by the opening 11 provided with the hollow portion 10a because of the negative pressure, and flows in the radial direction.

そして、径方向に流れる空気は、本体の左右、上下にある吹出し口から円滑に放出されるため、通風抵抗が低くなり入力の低減、騒音の低下に繋がる。また、部品としては、オリフィスの形状を変更するのみで、部品点数を増加させることなく構成できるため管理も容易である。   And since the air which flows to radial direction is discharge | released smoothly from the blower outlet in the right and left of the main body, and the upper and lower sides, ventilation resistance becomes low and it leads to the reduction of an input and a noise. Also, since the components can be configured without increasing the number of components only by changing the shape of the orifice, management is also easy.

また、斜流ファンの後縁直径を前縁直径より大きくすることにより、後縁部分すなわち吹き出し側での遠心力を増加させて、流れの径方向成分を増加させる。よって、左右、上下の吹き出し口から円滑に放出される。   Further, by making the trailing edge diameter of the mixed flow fan larger than the leading edge diameter, the centrifugal force at the trailing edge portion, that is, the blowing side is increased, and the radial component of the flow is increased. Therefore, it is smoothly discharged from the left and right and upper and lower outlets.

(実施の形態2)
図4は本発明の実施の形態2における空気調和機の室内ユニットの断面図である。本実施の形態において、実施の形態1と同様の構成については、説明を省略する。本実施の形態が実施の形態1と異なるところは、モータ4を、熱交換器3と斜流ファン5の間に配置する構成である。
(Embodiment 2)
FIG. 4 is a cross-sectional view of an indoor unit of an air conditioner according to Embodiment 2 of the present invention. In the present embodiment, the description of the same configuration as that of the first embodiment is omitted. The present embodiment is different from the first embodiment in that the motor 4 is arranged between the heat exchanger 3 and the mixed flow fan 5.

モータ4により回転される斜流ファン5により、居室内の空気を吸い込み、まず、吸入グリル2を通過して熱交換器3に流れ込む。熱交換器3を通過する間に空気が熱交換され、その後、斜流ファン5に流れ込む。熱交換器3と斜流ファン5の間にモータ4が配置されているが、熱交換器3から流出時の風速が低いため、モータが大きな抵抗にならない。   The mixed flow fan 5 rotated by the motor 4 sucks in the air in the room, and first passes through the suction grill 2 and flows into the heat exchanger 3. The air is heat-exchanged while passing through the heat exchanger 3 and then flows into the mixed flow fan 5. Although the motor 4 is disposed between the heat exchanger 3 and the mixed flow fan 5, the motor does not become a large resistance because the wind speed when flowing out of the heat exchanger 3 is low.

また、モータ4は、斜流ファン5のオリフィス10の上流に配置されているため、モータ4の外周部を流れる状態となり、抵抗の低減になる。すなわち、斜流ファン5から吹き出された直後の風速は、非常に速いため、斜流ファン5の下流域に配置しないことは通風抵抗の低減に有効である。   Moreover, since the motor 4 is arrange | positioned upstream of the orifice 10 of the mixed flow fan 5, it will be in the state which flows through the outer peripheral part of the motor 4, and resistance will be reduced. That is, since the wind speed immediately after being blown out from the mixed flow fan 5 is very high, it is effective to reduce the ventilation resistance if it is not arranged in the downstream area of the mixed flow fan 5.

また、モータ4は、斜流ファン5に囲まれるように配置されるため、スペース効率が良くコンパクト化が図れる。4方向の吹き出し口、左吹出し口6と、右吹出し口7と、上吹出し口20と、下吹出し口21についても、モータ4を配置していないため、コンパクト化が図れる。すなわち、本体全体、特に奥行き方向のコンパクト化が図れる。   In addition, since the motor 4 is disposed so as to be surrounded by the mixed flow fan 5, the space efficiency is high and the size can be reduced. Since the motor 4 is not disposed in the four-direction outlets, the left outlet 6, the right outlet 7, the upper outlet 20, and the lower outlet 21, the downsizing can be achieved. That is, the entire main body, particularly in the depth direction, can be made compact.

以上のように、本実施の形態では、実施の形態1の効果に加えて、モータをファンと熱交換器の間に配置することにより、本体の奥行きサイズを縮小することができる。また、
吹き出し部にモータが無いため、通風抵抗が減少して送風性能が増加する。
As described above, in the present embodiment, in addition to the effects of the first embodiment, the depth size of the main body can be reduced by arranging the motor between the fan and the heat exchanger. Also,
Since there is no motor in the blowing part, the ventilation resistance is reduced and the blowing performance is increased.

以上のように、本発明の空気調和機の室内ユニットは、コンパクト化、軽量化を図るとともに、送風性能を悪化させることのないので、室内ユニットと室外ユニットが分離した分離型の空気調和機の室内ユニットだけでなく、室内ユニットと室外ユニットを一体化した一体型の空気調和機にも適用できる。   As described above, the indoor unit of the air conditioner of the present invention achieves compactness and weight reduction and does not deteriorate the blowing performance. Therefore, the indoor unit and the outdoor unit are separated from each other. The present invention can be applied not only to an indoor unit but also to an integrated air conditioner in which an indoor unit and an outdoor unit are integrated.

1 本体
2 吸入グリル
3 熱交換器
4 モータ
5 斜流ファン
6 左吹出し口
7 右吹出し口
10 オリフィス
10a 中空部
11 開口部
20 上吹出し口
21 下吹出し口
Di 前縁直径
Do 後縁直径
DESCRIPTION OF SYMBOLS 1 Main body 2 Suction grill 3 Heat exchanger 4 Motor 5 Diagonal flow fan 6 Left outlet 7 Right outlet 10 Orifice 10a Hollow part 11 Opening part 20 Upper outlet
21 Lower outlet Di Front edge diameter Do Rear edge diameter

Claims (3)

斜流ファンと、前記斜流ファンの前面に設けられた熱交換器と、前記斜流ファンの周囲に設けられたオリフィスと、前記熱交換器を通過した空気を吹き出す複数の吹出し口とを備え、前記オリフィスの吹き出し部分に開口部を設けることを特徴とする空気調和機の室内ユニット。 A mixed flow fan, a heat exchanger provided in front of the mixed flow fan, an orifice provided around the mixed flow fan, and a plurality of outlets for blowing out air that has passed through the heat exchanger An indoor unit of an air conditioner, wherein an opening is provided in a blowing portion of the orifice. 前記斜流ファンの後縁直径を前縁直径より大きくすることを特徴とする請求項1に記載の空気調和機の室内ユニット。 The indoor unit of an air conditioner according to claim 1, wherein a rear edge diameter of the mixed flow fan is larger than a front edge diameter. 前記斜流ファンを駆動するモータを、前記斜流ファンと前記熱交換器の間に配置させたことを特徴とする請求項1または2に記載の空気調和機の室内ユニット。 The indoor unit of an air conditioner according to claim 1 or 2, wherein a motor for driving the mixed flow fan is disposed between the mixed flow fan and the heat exchanger.
JP2010098508A 2010-04-22 2010-04-22 Indoor unit of air conditioner Pending JP2011226725A (en)

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CN102705910A (en) * 2012-06-07 2012-10-03 广东美的制冷设备有限公司 Indoor unit of air conditioner
CN102852854A (en) * 2012-08-20 2013-01-02 广东美的电器股份有限公司 Floor type air conditioner and oblique flow fan thereof
WO2013181904A1 (en) * 2012-06-07 2013-12-12 美的集团股份有限公司 Oblique flow fan, oblique flow blower and air conditioning indoor unit having same
CN105674405A (en) * 2016-03-28 2016-06-15 美的集团武汉制冷设备有限公司 Indoor unit of air conditioner
WO2023226398A1 (en) * 2022-05-27 2023-11-30 珠海格力电器股份有限公司 Mixed flow fan and air duct-type air conditioner

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CN102852854A (en) * 2012-08-20 2013-01-02 广东美的电器股份有限公司 Floor type air conditioner and oblique flow fan thereof
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