JP6502632B2 - Outdoor unit and air conditioner provided with this outdoor unit - Google Patents
Outdoor unit and air conditioner provided with this outdoor unit Download PDFInfo
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- JP6502632B2 JP6502632B2 JP2014168971A JP2014168971A JP6502632B2 JP 6502632 B2 JP6502632 B2 JP 6502632B2 JP 2014168971 A JP2014168971 A JP 2014168971A JP 2014168971 A JP2014168971 A JP 2014168971A JP 6502632 B2 JP6502632 B2 JP 6502632B2
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Description
本発明は、送風機を有する室外機及びこの室外機を備えた空気調和機に関する。 The present invention relates to an outdoor unit having a blower and an air conditioner provided with the outdoor unit.
従来、空気調和機において、少なくとも一つ以上のプロペラファンを有し、プロペラファンの上流側にモータを配置し、モータによってこのプロペラファンを駆動することにより室外機内部と熱交換器を送風する構成の室外機が知られている。 Conventionally, an air conditioner has at least one propeller fan, a motor is disposed upstream of the propeller fan, and the propeller fan is driven by the motor to blow the inside of the outdoor unit and the heat exchanger Outdoor units are known.
空調機の室外機は、高効率化、コンパクト化、低騒音化が求められているが、特許文献１に開示されているように、プロペラファンと上流側の障害物との距離を長く設定することにより、圧力損失を低減し、送風量を増加させ、軸動力を低減することが図られている。 The outdoor unit of the air conditioner is required to achieve high efficiency, compactness and low noise, but as disclosed in Patent Document 1, the distance between the propeller fan and the obstacle on the upstream side is set long Thus, it is intended to reduce the pressure loss, increase the air flow, and reduce the shaft power.
また、屋外に設置する室外機に搭載されるモータは、いわゆる屋外型タイプであるため、雨水が浸入しないように密封性の高いケーシングで覆われており、下流側に配置されるファンに対して空気抵抗になりやすい位置と形状となっている。このため、プロペラファンとケーシングとの距離を長く設定すると、風量増加、軸動力低減、騒音低減の効果が期待できる。 Also, since the motor mounted on the outdoor unit installed outdoors is a so-called outdoor type, it is covered with a casing having a high sealing property so that rain water does not infiltrate, and the fan installed on the downstream side It has a position and shape that is likely to cause air resistance. For this reason, if the distance between the propeller fan and the casing is set long, the effects of increased air volume, reduced axial power, and reduced noise can be expected.
また、ファン外径とシュラウド内径との間隙であるいわゆるチップクリアランスを小さく設定することで、送風量を増加させることが一般に知られている。 It is also generally known to increase the air flow by setting the so-called tip clearance, which is the gap between the fan outer diameter and the inner diameter of the shroud, small.
しかしながら、ファンとモータとの距離を長くする場合、ファンを支持する回転軸の剛性が減じることとなり、ファン外径部とシュラウド内径部が干渉するおそれが生じるため、ファンとケーシングとの距離の増大にも限界があった。 However, when the distance between the fan and the motor is increased, the rigidity of the rotating shaft supporting the fan is reduced, and there is a possibility that the fan outer diameter portion and the shroud inner diameter portion may interfere with each other. There was also a limit.
本発明は、風量増加、軸動力低減、騒音低減が可能な室外機を提供することを目的とする。 An object of the present invention is to provide an outdoor unit capable of increasing air volume, reducing axial power, and reducing noise.
本発明の室外機は、筐体と、前記筐体の上部に配置され、前記筐体の内部から前記筐体の外部に空気を送る送風機と、前記送風機の上流側に位置し前記送風機を駆動するモータと、前記モータをカバーするモータケーシングと、前記モータの回転子に固定されて該モータの回転力を送風機に直接伝達する一本の回転軸と、前記送風機と前記モータとの間であって前記モータケーシングから離れた位置で且つ空気の流れの中に配置され、前記モータの回転力を直接前記送風機に伝達する前記一本の回転軸を保持する軸受と、を備え、前記軸受の回転軸の方向の投影面積は前記モータケーシングの回転軸の方向の投影面積よりも小さく構成されることを特徴とする。
An outdoor unit according to the present invention includes a case, a blower disposed at an upper portion of the casing, which sends air from the inside of the casing to the outside of the casing, and an upstream side of the blower driving the blower. Between the fan and the motor, a motor casing for covering the motor, a rotating shaft fixed to the rotor of the motor to directly transmit the rotational force of the motor to the fan, and And a bearing disposed at a position away from the motor casing and in the flow of air and holding the one rotation shaft directly transmitting the rotational force of the motor to the blower, the rotation of the bearing The projected area in the direction of the axis is smaller than the projected area in the direction of the rotation axis of the motor casing.
本発明によれば、ファンとモータとを接続する回転軸を保持する軸受によりファンとモータケーシングとの距離を長く設定できるとともに、この軸受による空気抵抗が低減されるので、風量増加、軸動力低減、騒音低減が可能な室外機を提供することができる。
According to the present invention, the distance between the fan and the motor casing can be set long by the bearing holding the rotating shaft connecting the fan and the motor, and the air resistance due to the bearing is reduced. Thus, an outdoor unit capable of reducing noise can be provided.
本発明の室外機は、筺体と、筐体上部に配置され、筐体内部から筐体外部に空気を送る送風機と、送風機の上流側に位置し送風機を駆動するモータと、モータをカバーするモータケーシングと、モータの回転力を送風機に伝達する回転軸と、回転軸を保持する軸受と、を備え、軸受の回転軸方向の投影面積はモータケーシングの回転軸方向の投影面積よりも小さく構成される。本発明の室外機によれば、ファンとモータとを接続する回転軸を保持する軸受によりファンとケーシングとの距離を長く設定できるとともに、この軸受による空気抵抗を低減できるので、風量増加、軸動力低減、騒音低減が可能となる。 The outdoor unit according to the present invention includes a housing, a blower disposed at an upper portion of the casing, which sends air from the inside of the casing to the outside of the casing, a motor positioned on the upstream side of the blower and driving the blower, and a motor covering the motor. A casing, a rotating shaft for transmitting the rotational force of the motor to the blower, and a bearing for holding the rotating shaft, and the projected area in the rotating shaft direction of the bearing is smaller than the projected area in the rotating shaft direction of the motor casing Ru. According to the outdoor unit of the present invention, the distance between the fan and the casing can be set long by the bearing holding the rotary shaft connecting the fan and the motor, and the air resistance due to the bearing can be reduced. It is possible to reduce noise and reduce noise.
本発明の第１の実施例について、図１−図３を参照して説明する。図１に本実施例の室外機の構造を示す。空気調和機は、室外機１と室内機（図示せず）から構成されており、これらは冷媒配管によって繋がれ、冷媒によって熱を運ぶことで冷房及び暖房運転を行う。図１に示した空気調和機の室外機１は、プロペラファン２、モータ３、回転軸４、シュラウド５、モータを支持するモータクランプ６、熱交換器７、圧縮機９、電気機器を収めた電気箱８、さらにそれらを収めた筺体により構成される。 A first embodiment of the present invention will be described with reference to FIGS. The structure of the outdoor unit of a present Example is shown in FIG. The air conditioner is composed of an outdoor unit 1 and an indoor unit (not shown), which are connected by a refrigerant pipe, and perform cooling and heating operations by carrying heat by the refrigerant. The outdoor unit 1 of the air conditioner shown in FIG. 1 contains a propeller fan 2, a motor 3, a rotary shaft 4, a shroud 5, a motor clamp 6 for supporting the motor, a heat exchanger 7, a compressor 9, and electrical devices. It is comprised by the electrical box 8 and the housing which accommodated them further.
プロペラファン２とモータ３との間に軸受１３を設置し、軸受１３はブラケット１５を介してモータケーシング２０に固定される。 A bearing 13 is installed between the propeller fan 2 and the motor 3, and the bearing 13 is fixed to the motor casing 20 via a bracket 15.
図２はモータ３の内部構造を示す。プロペラファン２の回転軸４の周りに回転子１８、固定子１９、モータケーシング２０が設置される。モータケーシング２０に取り付けられたブラケット１５に軸受１３が設置される。 FIG. 2 shows the internal structure of the motor 3. A rotor 18, a stator 19, and a motor casing 20 are installed around the rotation shaft 4 of the propeller fan 2. A bearing 13 is installed on a bracket 15 attached to the motor casing 20.
モータ３の回転によってプロペラファン２を駆動し、空気の流れを発生させる。室外機１外部から吸い込まれた空気は、熱交換器７を通過しながら熱交換を行い、その後流れの方向を上に向けて、プロペラファン２に流入する。プロペラファン２の上流にモータ３が配置され、プロペラファン２とモータ３（モータケーシング２０）の距離が小さいとプロペラファン２の中心側には空気が供給されにくくなり、ファンの送風量が低下する。 The propeller fan 2 is driven by the rotation of the motor 3 to generate an air flow. The air sucked from the outside of the outdoor unit 1 exchanges heat while passing through the heat exchanger 7, and then flows into the propeller fan 2 with the flow direction upward. When the motor 3 is disposed upstream of the propeller fan 2 and the distance between the propeller fan 2 and the motor 3 (motor casing 20) is short, air is difficult to be supplied to the center side of the propeller fan 2 and the air flow of the fan decreases. .
本実施例においては、回転軸４を保持する軸受１３を備えるので、モータ３との距離を長く設定できる。つまり、軸受１３により、回転軸４は回転可能に固定されているため、回転軸４を長くすることによる剛性低下が抑制され、シュラウド５の内径部とプロペラファン２の干渉の危険性も抑制でき、このような干渉する危険性を回避して、風量増加、軸動力低減、騒音低減を行うことが可能である。また、軸受１３の回転軸方向の投影面積をモータケーシング２０の回転軸方向の投影面積よりも小さく構成するので、軸受１３による空気抵抗も低減できるので、送風量の低減を抑制することができる。さらに、軸受部１３の周囲に空気が流れるようにブラケット１５を構成しているため、送風量を大きくすることができ、送風効率を増加させることができる。 In the present embodiment, since the bearing 13 for holding the rotating shaft 4 is provided, the distance to the motor 3 can be set long. That is, since the rotating shaft 4 is rotatably fixed by the bearing 13, a decrease in rigidity due to the lengthening of the rotating shaft 4 is suppressed, and the risk of interference between the inner diameter portion of the shroud 5 and the propeller fan 2 can also be suppressed. It is possible to increase the air volume, reduce the axial power, and reduce the noise while avoiding the risk of such interference. Further, since the projected area of the bearing 13 in the rotational axis direction is smaller than the projected area of the motor casing 20 in the rotational axis direction, the air resistance by the bearing 13 can be reduced, so that the reduction of the air flow can be suppressed. Furthermore, since the bracket 15 is configured such that the air flows around the bearing portion 13, the air blowing amount can be increased, and the air blowing efficiency can be increased.
また、軸受部１３とブラケット１５を図４、図５に示すように小型化することで一層の圧力損失低減が可能である。 Further, the pressure loss can be further reduced by downsizing the bearing portion 13 and the bracket 15 as shown in FIGS. 4 and 5.
本発明の第２の実施例について、図６、図７を参照して説明する。図６に本実施例の室外機の構造を示す。図６に示した空気調和機の室外機を構成する主な部品は、第１の実施の形態と同様な構造であるが、ブラケット２２はモータクランプ６に支持される。本構造では、モータ３を含めて支持固定するため、第１の実施の形態よりも強固に固定することができる。 A second embodiment of the present invention will be described with reference to FIG. 6 and FIG. The structure of the outdoor unit of a present Example is shown in FIG. The main parts constituting the outdoor unit of the air conditioner shown in FIG. 6 have the same structure as in the first embodiment, but the bracket 22 is supported by the motor clamp 6. In this structure, since the motor 3 is supported and fixed, the motor 3 can be fixed more firmly than in the first embodiment.
また、図８に示す水平方向に空気が流れる構造においても、プロペラファンとシュラウドの干渉を回避することができる。 Also in the structure in which air flows in the horizontal direction shown in FIG. 8, interference between the propeller fan and the shroud can be avoided.
１ 室外機
２ プロペラファン
３ モータ
４ 回転軸
５ シュラウド
６ モータクランプ
７ 熱交換器
８ 電気箱
９ 圧縮機
１０ アキュムレータ
１１a 側板
１２ 底板
１３ 軸受
１４ 軸受
１５ ブラケット
１６ ゴムシール
１７ 仕切部材
１８ 回転子
１９ 固定子
２０ モータケーシング
２１ 回転軸ケーシング
２２ ブラケット
２３ 上板
Reference Signs List 1 outdoor unit 2 propeller fan 3 motor 4 rotary shaft 5 shroud 6 motor clamp 7 heat exchanger 8 electric box 9 compressor 10 accumulator 11 a side plate 12 bottom plate 13 bearing 14 bearing 15 bracket 16 rubber seal 17 partition member 18 rotor 19 stator 20 Motor casing 21 Rotary shaft casing 22 Bracket 23 Upper plate
Claims (3)
前記筐体の上部に配置され、前記筐体の内部から前記筐体の外部に空気を送る送風機と、
前記送風機の上流側に位置し、前記送風機を駆動するモータと、
前記モータをカバーするモータケーシングと、
前記モータの回転子に固定されて該モータの回転力を前記送風機に直接伝達する一本の回転軸と、
前記送風機と前記モータとの間であって前記モータケーシングから離れた位置で且つ空気の流れの中に配置され、前記モータの回転力を直接前記送風機に伝達する前記一本の回転軸を保持する軸受と、
を備え、
前記軸受の前記回転軸の方向の投影面積は前記モータケーシングの前記回転軸の方向の投影面積よりも小さく構成される
ことを特徴とする室外機。 And
A blower disposed at an upper portion of the housing and sending air from the inside of the housing to the outside of the housing;
A motor located upstream of the fan and driving the fan;
A motor casing that covers the motor;
A rotating shaft fixed to a rotor of the motor to directly transmit the rotational force of the motor to the blower;
It is disposed between the blower and the motor, at a position away from the motor casing , and in the flow of air, and holds the single rotation shaft that directly transmits the rotational force of the motor to the blower. Bearing,
Equipped with
An outdoor unit, wherein a projected area of the bearing in the direction of the rotation axis is smaller than a projected area of the motor casing in the direction of the rotation axis.
前記軸受を支持するブラケットと、前記モータを支持するモータクランプと、を備え、
前記ブラケットを前記モータクランプに取り付けたことを特徴とする室外機。 In the outdoor unit according to claim 1,
A bracket for supporting the bearing; and a motor clamp for supporting the motor,
An outdoor unit characterized in that the bracket is attached to the motor clamp.
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| JP2014168971A JP6502632B2 (en) | 2014-08-22 | 2014-08-22 | Outdoor unit and air conditioner provided with this outdoor unit |
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| JP2014168971A JP6502632B2 (en) | 2014-08-22 | 2014-08-22 | Outdoor unit and air conditioner provided with this outdoor unit |
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| JP2016044868A JP2016044868A (en) | 2016-04-04 |
| JP2016044868A5 JP2016044868A5 (en) | 2017-03-16 |
| JP6502632B2 true JP6502632B2 (en) | 2019-04-17 |
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| JP2020094751A (en) * | 2018-12-13 | 2020-06-18 | 東芝ライフスタイル株式会社 | refrigerator |
| JP6908246B2 (en) * | 2019-09-10 | 2021-07-21 | スリーエイ ロジックス カンパニー リミテッド３Ａ ＬＯＧＩＣＳ Ｃｏ．，ＬＴＤ． | Temperature control device and heating system that converts RF signals output from CMOS oscillators into heat energy |
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| JPS5638370Y2 (en) * | 1976-11-05 | 1981-09-08 | ||
| JPS62132293U (en) * | 1986-02-17 | 1987-08-20 | ||
| JP3436115B2 (en) * | 1998-02-06 | 2003-08-11 | 株式会社日立製作所 | Air conditioner |
| CN103104522A (en) * | 2012-12-13 | 2013-05-15 | 昆山俊润通风降温设备有限公司 | Negative pressure draught fan |
| JP5924715B2 (en) * | 2013-01-16 | 2016-05-25 | 三菱電機株式会社 | Outdoor unit |
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