JPH09137970A - Outdoor unit for air conditioner - Google Patents
Outdoor unit for air conditionerInfo
- Publication number
- JPH09137970A JPH09137970A JP29673995A JP29673995A JPH09137970A JP H09137970 A JPH09137970 A JP H09137970A JP 29673995 A JP29673995 A JP 29673995A JP 29673995 A JP29673995 A JP 29673995A JP H09137970 A JPH09137970 A JP H09137970A
- Authority
- JP
- Japan
- Prior art keywords
- suction port
- orifice
- blower
- blade
- panel
- 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
Links
Landscapes
- Other Air-Conditioning Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属するの技術分野】本発明は、家庭用から業務
用まで幅広い分野で使用されている空気調和機の室外機
の送風機の低騒音化に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to noise reduction of an air blower for an outdoor unit of an air conditioner used in a wide range of fields from home use to business use.
【０００２】[0002]
【従来の技術】近年、建築事情の多様化に伴い、空気調
和機の室外機は様々な場所に設置されるようになってき
ており、より低騒音化が望まれる傾向にある。2. Description of the Related Art In recent years, with the diversification of building conditions, outdoor units of air conditioners have been installed in various places, and there is a tendency for noise reduction to be further desired.
【０００３】以下、図面を参照しながら、特開平２−１
５７５４６号公報等で提案されている従来の空気調和機
の室外機について説明する。Hereinafter, with reference to the drawings, Japanese Patent Laid-Open No. 2-1
An outdoor unit of a conventional air conditioner proposed in Japanese Patent No. 57546 will be described.
【０００４】図７〜図９は従来の空気調和機の室外機の
構成を示すものである。図において、１は空気調和機の
室外機の本体であり、２は箱体であり、３は箱体２の一
つの側面パネル２ｂに設けられた吸込口であり、４は箱
体２の上面パネル２ａ側に設けた送風機である。箱体２
の内部には、吸込口３側に熱交換器５、圧縮機６、及び
送風機の吐出側に略円形断面形状の線材を螺旋状に配設
したファンガード７を設けている。送風機４は、モータ
８と、モータ８に取り付けられた羽根車９と、羽根車９
の吐出側の外周を囲む吸込側１０ａがベルマウス状のオ
リフィス１０で構成されている。7 to 9 show the construction of an outdoor unit of a conventional air conditioner. In the figure, 1 is a main body of an outdoor unit of an air conditioner, 2 is a box, 3 is a suction port provided in one side panel 2b of the box 2, and 4 is an upper surface of the box 2. It is a blower provided on the panel 2a side. Box 2
Inside, a heat exchanger 5, a compressor 6, and a fan guard 7 in which a wire having a substantially circular cross section is spirally arranged are provided on the suction port 3 side and on the discharge side of the blower. The blower 4 includes a motor 8, an impeller 9 attached to the motor 8, and an impeller 9
The suction side 10a that surrounds the outer circumference of the discharge side is formed of a bellmouth-shaped orifice 10.
【０００５】また、１１は、空気調和機の室外機１の設
置場所に合わせ、上面パネル２ａの上部に取り付ける吹
き出しガイドである。A blowing guide 11 is attached to the upper part of the upper panel 2a in accordance with the location of the outdoor unit 1 of the air conditioner.
【０００６】このように構成された空気調和機の室外機
について以下その動作を説明する。まず、吸込口３より
吸い込まれた空気は、熱交換器５を通過する際に圧縮機
６より熱交換器５に送られた冷媒と熱交換し、温度変化
する。温度変化した空気はモータ８が羽根車９を所定の
回転方向に回転し、箱体２の上面パネル２ａ側に設けた
軸流型の送風機４に吸い込み、送風機４より箱体２外へ
吹き出される。The operation of the outdoor unit of the air conditioner thus configured will be described below. First, the air sucked from the suction port 3 exchanges heat with the refrigerant sent from the compressor 6 to the heat exchanger 5 when passing through the heat exchanger 5, and the temperature changes. The motor 8 rotates the impeller 9 in a predetermined rotating direction by the temperature-changed air, sucks the air into the axial flow type blower 4 provided on the upper panel 2a side of the box 2, and is blown out of the box 2 by the blower 4. It
【０００７】ここで、空気調和機の室外機１が、ベラン
ダのような送風機４の上部に吹き出し気流の障害となる
とような構造物がある場合、図９で示すように、吹き出
し方向を斜め上方に向ける吹き出しガイド１１が取り付
けられるようになっている。また、吹き出しガイド１１
は、一方向に折曲し、かつ、この折曲方向に順次その高
さが低くなるように構成された複数のガイド板１１ａを
有しているため、吹き出しガイド１１の高さが低くて
も、吹出口２ａのからの吹き出し気流が、複数の各ガイ
ド板１１ａ間で、斜めに吹き出し方向を偏向されるた
め、吹き出しガイドから、全体で斜め上方に吹き出し、
高さが低いため吹き出しガイド１１の通風抵抗も増加せ
ず、送風騒音の増加も抑えられる。In the outdoor unit 1 of the air conditioner, when there is a structure such as a veranda above the blower 4 that obstructs the blown airflow, the blowout direction is slanted upward as shown in FIG. A blow-out guide 11 that points to is attached. Also, the balloon guide 11
Has a plurality of guide plates 11a which are bent in one direction and whose heights are sequentially lowered in the bending direction, even if the height of the blowing guide 11 is low. Since the blowout airflow from the blowout port 2a is deflected obliquely between the plurality of guide plates 11a, the blowout guide blows obliquely upward as a whole,
Since the height is low, the ventilation resistance of the blowing guide 11 does not increase, and the increase in blowing noise can be suppressed.
【０００８】[0008]
【発明が解決しようとする課題】この空気調和機の室外
機では、図８に示すように、羽根車９の羽根１２におい
て、回転による遠心力により内部の気流は外周部１２ｂ
に偏り、羽根１２の外周部１２ｂの圧力面側近傍と負圧
面側近傍から、各々、羽根１２のオリフィス１０に囲ま
れていない外周に吹き出す。特に、羽根１２の圧力分布
が圧力面側で高く負圧面側で低くなるため、羽根１２の
外周部１２ｂの圧力面側近傍から外周に吹き出し、負圧
面側に急激に回り込む気流（図示せず）と、羽根１２の
外周部１２ｂの負圧面側近傍から外周に吹き出す気流
（図示せず）が、羽根１２の外周端部１２ｄの負圧面側
である程度の距離をおいて互いに逆方向に流れるため、
外周端部１２ｄの負圧面側に渦Ｕ１が生成する。In the outdoor unit of this air conditioner, as shown in FIG. 8, in the blades 12 of the impeller 9, the air flow inside the outer peripheral portion 12b is caused by the centrifugal force due to the rotation.
And is blown out from the vicinity of the pressure surface side and the vicinity of the negative pressure surface of the outer peripheral portion 12b of the blade 12 to the outer periphery of the blade 12 which is not surrounded by the orifice 10. In particular, since the pressure distribution of the blades 12 is high on the pressure surface side and low on the suction surface side, an air flow (not shown) that blows out from the vicinity of the pressure surface side of the outer peripheral portion 12b of the blade 12 to the outer periphery and rapidly circulates to the suction surface side. And the airflow (not shown) blown to the outer periphery from the vicinity of the suction surface side of the outer peripheral portion 12b of the blade 12 flows in opposite directions with a certain distance on the suction surface side of the outer peripheral end 12d of the blade 12,
A vortex U1 is generated on the suction surface side of the outer peripheral end 12d.
【０００９】ここで、羽根１２の外周部１２ｂの後縁１
２ｅで、羽根１２の圧力面側で高く負圧面側で低くなる
圧力分布が突然無くなる急激な変化を起こすため、回り
込む気流がなくなり、渦Ｕ１が崩壊する。従って、羽根
１２の後縁１２ｅで圧力変動が生じ、羽根１２全体の圧
力脈動の増加を誘発する。Here, the trailing edge 1 of the outer peripheral portion 12b of the blade 12 is
At 2e, the pressure distribution that is high on the pressure surface side of the blade 12 and low on the suction surface side suddenly disappears, causing a sudden change, so that the circling air flow disappears and the vortex U1 collapses. Therefore, a pressure fluctuation occurs at the trailing edge 12e of the blade 12, which induces an increase in the pressure pulsation of the entire blade 12.
【００１０】また、箱体２の吸込口３を設けている側面
パネル２ｂ側では、羽根１２の外周からの気流の流入が
多くなり、羽根１２の外周部１２ｂの送風作用を促進
し、羽根１２の外周部１２ｂの圧力面側近傍からの吹き
出し負圧面側に急激に回り込む気流と、負圧面側近傍か
らの吹き出すが多くなり、吸込口３を設けている側面パ
ネル２ｂ側の壁面と羽根１２の間で大きな渦Ｕ２を形成
する。On the side panel 2b side where the suction port 3 of the box body 2 is provided, the inflow of airflow from the outer periphery of the blade 12 is increased, which promotes the air blowing action of the outer peripheral portion 12b of the blade 12 and the blade 12 The airflow that suddenly circulates from the vicinity of the pressure surface of the outer peripheral portion 12b to the suction surface side and the amount of the air that blows out from the vicinity of the suction surface side are increased, and the wall surface of the side panel 2b side where the suction port 3 is provided and the blade 12 A large vortex U2 is formed between them.
【００１１】そして、吸込口３を設けている側面パネル
２ｂ側でも、渦Ｕ２は羽根１２の外周部１２ｂの後縁１
２ｅで、羽根１２の圧力面側で高く負圧面側で低い圧力
分布が突然無くなるような急激な変化を起こすため、回
り込む気流がなくなり、渦Ｕ２が崩壊する。従って、羽
根１２の後縁１２ｅで大きな圧力変動が生じ、吸込口３
を設けている側面パネル２ｂ側では羽根１２全体の圧力
脈動の大幅な増加を誘発される。Also on the side panel 2b side where the suction port 3 is provided, the vortex U2 has the trailing edge 1 of the outer peripheral portion 12b of the blade 12.
At 2e, a sudden change occurs in which the pressure distribution that is high on the pressure surface side of the blade 12 and low on the suction surface side suddenly disappears, so there is no airflow that goes around, and the vortex U2 collapses. Therefore, a large pressure fluctuation occurs at the trailing edge 12e of the blade 12, and the suction port 3
On the side of the side panel 2b where is provided, a large increase in pressure pulsation of the entire blade 12 is induced.
【００１２】従って、箱体の少なくとも一つの側面パネ
ルに吸込口を設け、上面に送風機を設けた空気調和機の
室外機において、発生する送風騒音の増加を抑えること
が要求されている。Therefore, in an outdoor unit of an air conditioner in which at least one side panel of the box body is provided with a suction port and a blower is provided on the upper surface, it is required to suppress an increase in blown noise.
【００１３】本発明は、箱体の少なくとも一つの側面パ
ネルに吸込口を設け、上面パネル側に送風機を設けた空
気調和機の室外機において、送風機の羽根車の羽根外周
部の後縁直後での渦の崩壊を抑え、羽根全体の圧力脈動
の増加を防止し、送風騒音の増加を抑えることを目的と
する。According to the present invention, in an outdoor unit of an air conditioner in which at least one side panel of a box body is provided with a suction port, and a blower is provided on the upper panel side, immediately after the trailing edge of the blade outer peripheral portion of the impeller of the blower. The purpose is to suppress the collapse of the vortex, prevent the increase of pressure pulsation of the entire blade, and suppress the increase of blast noise.
【００１４】[0014]
【課題を解決するための手段】この課題を解決するため
に、本発明は、箱体と、前記箱体の少なくとも一つの側
面パネルに設けられた吸込口と、前記箱体の上面パネル
側に設けた送風機と、前記箱体内の吸込口側に設けた熱
交換器と、圧縮機と、及び前記送風機の吐出側に設けら
れたファンガードで構成され、前記送風機は、モータ
と、前記モータに取り付けられた羽根車と、前記羽根車
の外周を囲むオリフィスと、前記オリフィスの吐出側に
設けられたオリフィスの最小内径より大の内径をもつ略
円筒形のリングから成り、前記リングは、前記吸込口を
設けた側面パネル側では、前記吸込口を設けていない側
面パネル側に比べ、前記オリフィスの最小内径とリング
の内径の差が大きくしたものである。In order to solve this problem, the present invention provides a box, a suction port provided in at least one side panel of the box, and an upper panel side of the box. A blower provided, a heat exchanger provided on the suction side of the box body, a compressor, and a fan guard provided on the discharge side of the blower, the blower is a motor, the motor An attached impeller, an orifice surrounding the outer circumference of the impeller, and a substantially cylindrical ring having an inner diameter larger than the minimum inner diameter of the orifice provided on the discharge side of the orifice, the ring being the suction member. The difference between the minimum inner diameter of the orifice and the inner diameter of the ring is larger on the side panel side provided with the mouth than on the side panel side not provided with the suction port.
【００１５】これにより、箱体の少なくとも一つの側面
パネルに吸込口を設け、上面パネル側に送風機を設けた
空気調和機の室外機において、送風機の羽根車の羽根外
周部の後縁直後での渦の崩壊を抑え、羽根全体の圧力脈
動の増加を防止し、送風騒音の増加を抑える空気調和機
の室外機が得られる。As a result, in the outdoor unit of the air conditioner in which at least one side panel of the box body is provided with the suction port and the blower is provided on the top panel side, immediately after the trailing edge of the blade outer peripheral portion of the impeller of the blower. An outdoor unit of an air conditioner that suppresses the collapse of vortices, prevents an increase in pressure pulsation of the entire blade, and suppresses an increase in blast noise can be obtained.
【００１６】[0016]
【発明の実施の形態】本発明の請求項１に記載の発明
は、箱体と、前記箱体の少なくとも一つの側面パネルに
設けられた吸込口と、前記箱体の上面パネル側に設けた
送風機と、前記箱体内の吸込口側に設けた熱交換器と、
圧縮機と、及び前記送風機の吐出側に設けられたファン
ガードで構成され、前記送風機は、モータと、前記モー
タに取り付けられた羽根車と、前記羽根車の外周を囲む
オリフィスと、前記オリフィスの吐出側に設けられたオ
リフィスの最小内径より大の内径をもつ略円筒形のリン
グから成り、前記リングは、前記吸込口を設けた側面パ
ネル側では、前記吸込口を設けていない側面パネル側に
比べ、前記オリフィスの最小内径とリングの内径の差が
大きくした空気調和機の室外機であり、まず、羽根の外
周部の後縁から吐出した気流がオリフィスの吐出側の壁
面を介して、オリフィスの吐出側に設けたオリフィス最
小内径より大の内径を持つリングの内壁近傍にさらに広
がりながら気流がリングより送風機外に吹き出してい
く。その際、リング内壁近傍のオリフィス側に羽根外周
部の吐出部に対し、相対的に負圧となる部分が発生す
る。このリング内壁近傍の負圧部に羽根外周部の吐出部
の圧力面側からの回り込む気流が誘引され、羽根外周部
の負圧側の後縁直後で渦が急激に崩壊せず、オリフィス
吐出側に移行する。従って、羽根外周部の後縁の直後で
の圧力変動が防止され、羽根全体の圧力脈動の増加を抑
える。BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention includes a box body, a suction port provided on at least one side panel of the box body, and an upper panel side of the box body. A blower, and a heat exchanger provided on the suction port side in the box body,
Comprising a compressor and a fan guard provided on the discharge side of the blower, the blower comprises a motor, an impeller attached to the motor, an orifice surrounding the outer periphery of the impeller, and an orifice. It consists of a substantially cylindrical ring having an inner diameter larger than the minimum inner diameter of the orifice provided on the discharge side, and the ring is on the side panel side provided with the suction port and on the side panel side not provided with the suction port. In comparison, it is an outdoor unit of an air conditioner in which the difference between the minimum inner diameter of the orifice and the inner diameter of the ring is large.First, the airflow discharged from the trailing edge of the outer peripheral portion of the blade is passed through the wall surface on the discharge side of the orifice, The air flow blows out of the blower from the ring while further spreading near the inner wall of the ring having an inner diameter larger than the minimum inner diameter of the orifice provided on the discharge side. At that time, a portion having a negative pressure is generated on the orifice side near the inner wall of the ring, relative to the discharge portion on the outer peripheral portion of the blade. An air flow that wraps around from the pressure surface side of the discharge portion of the blade outer peripheral portion is attracted to the negative pressure portion near the inner wall of the ring, and the vortex does not collapse rapidly immediately after the trailing edge of the negative pressure side of the blade outer peripheral portion. Transition. Therefore, pressure fluctuation immediately after the trailing edge of the blade outer peripheral portion is prevented, and an increase in pressure pulsation of the entire blade is suppressed.
【００１７】また、箱体の吸込口を設けている側面パネ
ル側では、オリフィスの最小内径とリングの内径の差が
大きくしているので、リング内壁近傍のオリフィス側に
羽根外周部の吐出部に対し相対的に負圧となる部分が大
きくなり、この大きなリング内壁近傍の負圧部に羽根外
周部の吐出部の圧力面側から大きく回り込む気流が誘引
され、羽根外周部の負圧面側で発生する吸込口を設けて
いない側面パネル側より大きな渦が急激に崩壊せずオリ
フィス吐出側に移行する。従って、箱体の少なくとも一
つの側面パネルに吸込口を設け、上面パネル側に送風機
を設けた空気調和機の室外機において、羽根外周部の後
縁直後での大きな圧力変動を防止し、羽根全体の圧力脈
動の大幅な増加を抑えるという作用を有する。Further, on the side panel side where the suction port of the box is provided, since the difference between the minimum inner diameter of the orifice and the inner diameter of the ring is large, the discharge portion of the blade outer peripheral portion is provided on the orifice side near the inner wall of the ring. On the other hand, the area of relatively negative pressure becomes large, and an air flow that greatly circulates from the pressure surface side of the discharge portion of the blade outer periphery is attracted to the large negative pressure portion near the inner wall of the ring, and is generated on the negative pressure surface side of the blade outer periphery. Larger vortices than those on the side panel side where no suction port is provided do not collapse rapidly and move to the orifice discharge side. Therefore, in an outdoor unit of an air conditioner in which a suction port is provided on at least one side panel of the box body and a blower is provided on the top panel side, a large pressure fluctuation is prevented immediately after the trailing edge of the blade outer peripheral portion, and the entire blade is prevented. It has the effect of suppressing a large increase in the pressure pulsation.
【００１８】請求項２に記載の発明は、略円筒形のリン
グの気流吹き出し口に楕円、あるいは、長方形の断面形
状の線材を螺旋状に配設したファンガードを取り付け、
前記吸込口を設けた側面パネル側では、前記線材の楕円
形、あるいは長方形の断面形状の長辺を前記羽根車の回
転軸に向けて斜めに傾け、前記吸込口を設けていない側
面パネル側では前記線材の楕円形、あるいは長方形の断
面形状の長辺を前記羽根車の回転軸に平行に設け、前記
線材を配設するピッチを前記吸込口を設けた側面のパネ
ル側では、前記吸込口を設けていない側面パネル側に比
べ大きくした前記請求項１記載の空気調和機の室外機で
あり、吸込口を設けていない側面パネル側では、オリフ
ィス吐出側に渦が移行することで、渦の吸引効果により
ファンガード近傍の羽根外周部からの吐出気流が増速し
ファンガードの配設された線材部で流速増加によるカル
マン渦等の乱流が拡大するが、線材の断面形状にてこの
乱流拡大を抑える。According to a second aspect of the present invention, a fan guard in which a wire rod having an elliptical or rectangular cross-section is spirally arranged is attached to an airflow outlet of a substantially cylindrical ring,
On the side panel side provided with the suction port, the long side of the elliptical or rectangular cross-sectional shape of the wire is obliquely inclined toward the rotation axis of the impeller, and on the side panel side not provided with the suction port. The long side of the elliptical or rectangular cross-sectional shape of the wire rod is provided in parallel with the rotation axis of the impeller, and the pitch at which the wire rod is arranged is the suction port on the side of the panel provided with the suction port. The outdoor unit for an air conditioner according to claim 1, which is made larger than the side panel side not provided, and the side panel side not provided with a suction port transfers the vortex to the orifice discharge side to suck the vortex. Due to the effect, the discharge air flow from the blade outer periphery near the fan guard is accelerated and the turbulent flow such as Karman vortex is expanded due to the increased flow velocity in the wire part where the fan guard is arranged. Suppress expansion
【００１９】また、吸込口を設けた側面パネル側では、
羽根の外周からの気流の流入が多くなり、羽根の外周部
の送風作用が促進され、オリフィス吐出側に渦が移行す
ることで、渦の吸引効果により増速する羽根外周部から
吐出する気流は斜め方向に吹き出すが、線材の長辺を羽
根車の回転軸に向けて斜めに設けることで、流速増加に
よる乱流拡大を抑える。On the side panel side provided with the suction port,
The inflow of airflow from the outer circumference of the blade increases, the blowing action of the outer circumference of the blade is promoted, and the vortex moves to the orifice discharge side, so the airflow discharged from the outer circumference of the blade is accelerated by the suction effect of the vortex. Although it blows out in an oblique direction, the long side of the wire is provided obliquely toward the rotation axis of the impeller, so that turbulent flow expansion due to an increase in flow velocity is suppressed.
【００２０】従って、箱体の少なくとも一つの側面パネ
ルに吸込口を設け、上面パネル側に送風機を設けた空気
調和機の室外機において、羽根外周部の後縁直後での渦
の崩壊による圧力脈動の増加を抑えると共に、ファンガ
ードでの乱流拡大を抑える。Therefore, in an outdoor unit of an air conditioner in which at least one side panel of the box body is provided with a suction port and a blower is provided on the upper panel side, pressure pulsation due to vortex breakdown immediately after the trailing edge of the blade outer peripheral portion It also suppresses the increase in turbulence in the fan guard.
【００２１】また、略円筒形のリングは、吸込口を設け
た側板パネル側が吸込口を設けていない側板パネル側に
比べ半径が大きくなるが、吸込口を設けた側板パネル側
で線材の断面形状を斜めにしているため、ピッチは大き
くなるが、線材相互の間隔は同寸であり、従来の螺旋状
の線材を放射状に広がる支柱に取り付ける安価な工法を
変えることなく生産が可能となるという作用を有する。Further, the substantially cylindrical ring has a larger radius on the side plate panel side provided with the suction port than on the side plate panel side not provided with the suction port, but the cross-sectional shape of the wire rod on the side plate panel side provided with the suction port. Since the angle is slanted, the pitch is large, but the intervals between the wire rods are the same size, and it is possible to produce without changing the inexpensive construction method of attaching the conventional spiral wire rods to the radially extending columns. Have.
【００２２】請求項３に記載の発明は、略円筒形のリン
グの気流吹き出し方向高さが、箱体の吸込口を設けた側
面パネル側では高く、前記吸込口を設けていない側面パ
ネル側では低い請求項１記載の空気調和機の室外機であ
り、吸込口を設けた側面パネル側では、羽根の外周から
の気流の流入が多くなり羽根の外周部の送風作用が促進
され羽根外周部から斜め方向に吹き出す気流を、リング
の気流吹き出し方向高さを高くすることで、羽根車の回
転軸と同方向に気流を向ける。According to a third aspect of the present invention, the height of the substantially cylindrical ring in the direction of air flow is high on the side panel side of the box provided with the suction port and on the side panel side not provided with the suction port. A low outdoor unit for an air conditioner according to claim 1, wherein on the side panel side provided with the suction port, the inflow of airflow from the outer periphery of the blade is increased, and the air blowing action of the outer peripheral portion of the blade is promoted to increase the air flow from the outer peripheral portion of the blade. By increasing the height of the airflow blowing direction of the ring, the airflow blowing obliquely is directed in the same direction as the rotation axis of the impeller.
【００２３】従って、箱体の少なくとも一つの側面パネ
ルに吸込口を設け、上面パネル側に送風機を設けた空気
調和機の室外機において、羽根外周部の後縁直後での渦
の崩壊による圧力脈動の増加を抑えると共に、吸込口を
設けた側面パネル側の送風機の吹き出し気流が斜めに吹
きだし、吸い込み口から直接吸い込まれるショートサー
キットを起こすことを防ぐという作用を有する。Therefore, in an outdoor unit of an air conditioner in which at least one side panel of the box body is provided with a suction port and a blower is provided on the upper panel side, pressure pulsation due to the collapse of vortices immediately after the trailing edge of the blade outer peripheral portion. This has the effect of suppressing the increase of the air flow and preventing the short-circuit which is directly sucked from the suction port due to the blowout airflow of the blower on the side panel side provided with the suction port.
【００２４】以下、本発明の第１の実施の形態について
図１、図２を用いて説明する。尚、従来例と同一構成の
部分については重複を避けるため、同一符号を付けて説
明を省略する。The first embodiment of the present invention will be described below with reference to FIGS. In addition, in order to avoid duplication, the same components as those in the conventional example will be denoted by the same reference numerals and description thereof will be omitted.
【００２５】図において、１３は、羽根車９の吐出側を
囲むオリフィスである。１４は、オリフィス１３の吐出
側１３ｂに取り付けられたオリフィス１３の最小内径ｄ
１より大の内径ｄ２をもつ略円筒形のリングであり、吸
込口３を設けた側面パネル２ｂ側では、吸込口３を設け
ていない側面パネル側２ｂ’に比べ、オリフィス１３の
最小内径ｄ１とリングの内径ｄ２の差ｓ（ｓ１＞ｓ２）
が大きい。In the figure, 13 is an orifice that surrounds the discharge side of the impeller 9. 14 is the minimum inner diameter d of the orifice 13 attached to the discharge side 13b of the orifice 13.
It is a substantially cylindrical ring having an inner diameter d2 larger than 1, and the minimum inner diameter d1 of the orifice 13 is smaller on the side panel 2b side where the suction port 3 is provided than on the side panel side 2b ′ where the suction port 3 is not provided. Ring inner diameter d2 difference s (s1> s2)
Is big.
【００２６】この構成により、羽根１２の外周部１２ｂ
の後縁１２ｅから吐出した気流がオリフィス１３の吐出
側１３ｂの壁面を介して、オリフィス１３の吐出側１３
ｂに設けたオリフィス１３の最小内径ｄ１より大の内径
ｄ２を持つ略円筒形のリング１４の内壁近傍にさらに広
がりながら気流が送風機４外に吹き出していく。その
際、リング１４の内壁近傍のオリフィス１３側に羽根１
２外周部１２ｂの吐出側１２ｃに対し、相対的に負圧と
なる部分ｘ１が発生する。このリング１４内壁近傍の負
圧部ｘ１に羽根１２の外周部１２ｂの吐出側１２ｃの圧
力面側１２ｃ１からの回り込む気流（図示せず）が誘引
され、羽根１２外周部１２ｂの負圧側１２ｂ２の後縁１
２ｅ直後で渦Ｕ１が急激に崩壊せず、オリフィス１３の
吐出側１３ｂに移行する。従って、羽根１２の外周部１
２ｂの後縁１２ｅの直後での圧力変動が防止され、羽根
１２全体の圧力脈動の増加を抑える。With this configuration, the outer peripheral portion 12b of the blade 12 is
The air flow discharged from the trailing edge 12e passes through the wall surface of the discharge side 13b of the orifice 13,
The air flow blows out of the blower 4 while further spreading near the inner wall of the substantially cylindrical ring 14 having an inner diameter d2 larger than the minimum inner diameter d1 of the orifice 13 provided in b. At that time, the blade 1 is provided on the side of the orifice 13 near the inner wall of the ring 14.
2. A portion x1 having a relatively negative pressure is generated on the discharge side 12c of the outer peripheral portion 12b. An airflow (not shown) that wraps around from the pressure surface side 12c1 of the discharge side 12c of the outer peripheral portion 12b of the blade 12 is attracted to the negative pressure portion x1 near the inner wall of the ring 14, and after the negative pressure side 12b2 of the blade 12 outer peripheral portion 12b. Edge 1
Immediately after 2e, the vortex U1 does not collapse rapidly and moves to the discharge side 13b of the orifice 13. Therefore, the outer peripheral portion 1 of the blade 12
The pressure fluctuation immediately after the trailing edge 12e of 2b is prevented, and the increase of the pressure pulsation of the entire blade 12 is suppressed.
【００２７】また、箱体２の吸込口３を設けている側面
パネル２ｂ側では、オリフィス１３の最小内径ｄ１とリ
ングの内径ｄ２の差ｓが大きくしているので、リング１
４内壁近傍のオリフィス１３側に羽根１２の外周部１２
ｂの吐出側１２ｃに対し相対的に負圧となる部分ｘ２が
大きくなり、この大きなリング１４内壁近傍の負圧部ｘ
２に羽根１２の外周部１２ｂの吐出側１２ｃの圧力面側
１２ｃ１から大きく回り込む気流が誘引され、羽根１２
の外周部１２ｂの負圧面側１２ｂ２で発生する吸込口３
を設けていない側面パネル２ｂ’側より大きな渦Ｕ２が
急激に崩壊せずオリフィス１３の吐出側１３ｂに移行す
る。従って、羽根１２の外周部１２ｂの後縁１２ｅでの
大きな圧力変動を防止され、羽根１２全体の圧力脈動の
大幅な増加を抑える。従って、箱体２の少なくとも一つ
の側面パネル２ｂに吸込口３を設け、上面パネル２ａ側
に送風機４を設けた空気調和機の室外機１において、羽
根１２の外周部１２ｂの後縁１２ｅ直後での渦の崩壊に
よる圧力脈動の増加を抑え、羽根車９の送風騒音の増加
を抑える。On the side panel 2b side where the suction port 3 of the box body 2 is provided, the difference s between the minimum inner diameter d1 of the orifice 13 and the inner diameter d2 of the ring is large, so the ring 1
4 the outer peripheral portion 12 of the blade 12 on the side of the orifice 13 near the inner wall
The portion x2 of negative pressure relative to the discharge side 12c of b becomes large, and the negative pressure portion x near the inner wall of the large ring 14 becomes large.
An air current that greatly circulates from the pressure surface side 12c1 of the discharge side 12c of the outer peripheral portion 12b of the blade 12 is attracted to the blade 12,
Suction port 3 generated on the suction side 12b2 of the outer peripheral portion 12b of the
The vortex U2, which is larger than the side panel 2b 'side where no is provided, does not collapse rapidly and moves to the discharge side 13b of the orifice 13. Therefore, large pressure fluctuations at the trailing edge 12e of the outer peripheral portion 12b of the blade 12 are prevented, and a large increase in pressure pulsation of the entire blade 12 is suppressed. Therefore, in the outdoor unit 1 of the air conditioner in which the suction port 3 is provided on at least one side panel 2b of the box body 2 and the blower 4 is provided on the upper panel 2a side, immediately after the rear edge 12e of the outer peripheral portion 12b of the blade 12. The increase in pressure pulsation due to the collapse of the vortex is suppressed, and the increase in blowing noise of the impeller 9 is suppressed.
【００２８】以下、本発明の第２の実施の形態について
図３〜図５を用いて説明する。尚、第１の実施の形態と
同一構成の部分については重複を避けるため、同一符号
を付けて説明を省略する。The second embodiment of the present invention will be described below with reference to FIGS. In addition, in order to avoid duplication, the same components as those in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.
【００２９】図において、１５は、略円筒形のリング１
４の気流吹き出し口１４ｂに楕円形の断面形状の線材１
５ａを螺旋状に配設したファンガードであり、吸込口３
を設けた側面パネル２ｂ側では、線材１５ａの断面形状
の長辺を前羽根車９の回転軸に向けて斜めに傾け設け、
吸込口３を設けていない側面パネル２ｂ’側では，線材
１５ａの断面形状の長辺を羽根車９の回転軸に平行に設
け、線材１５ａを配設するピッチを吸込口３を設けた側
面のパネル２ｂ側ではＴ１、吸込口３を設けていない側
面パネル２ｂ’側ではＴ２とすると、Ｔ１＞Ｔ２として
いる。In the figure, 15 is a substantially cylindrical ring 1.
No. 4 airflow outlet 14b has an elliptical cross-section wire 1
5a is a fan guard having a spiral arrangement, and the suction port 3
On the side panel 2b side provided with, the long side of the cross-sectional shape of the wire 15a is provided obliquely toward the rotation axis of the front impeller 9,
On the side panel 2b 'side where the suction port 3 is not provided, the long side of the cross-sectional shape of the wire 15a is provided parallel to the rotation axis of the impeller 9, and the pitch at which the wire 15a is provided is set to the side of the side face provided with the suction port 3. If T1 is on the panel 2b side and T2 is on the side panel 2b 'side where the suction port 3 is not provided, then T1> T2.
【００３０】この構成により、吸込口３を設けていない
側面パネル２ｂ’側では、オリフィス１３の吐出側１３
ｂに渦が移行することで、渦の吸引効果によりファンガ
ード１５近傍の羽根１２の外周部１２ｂからの吐出気流
が増速し、ファンガード１５の配設された線材部１５ａ
で流速増加によるカルマン渦等の乱流が拡大するが、線
材１５ａの楕円形の略流線型の断面形状にてこの乱流拡
大を抑える。With this configuration, the discharge side 13 of the orifice 13 is provided on the side panel 2b 'side where the suction port 3 is not provided.
When the vortex moves to b, the discharge airflow from the outer peripheral portion 12b of the blade 12 near the fan guard 15 is accelerated by the suction effect of the vortex, and the wire rod portion 15a in which the fan guard 15 is disposed is accelerated.
A turbulent flow such as a Karman vortex expands due to the increase in the flow velocity, but this turbulent flow expansion is suppressed by the elliptical, substantially streamlined cross-sectional shape of the wire 15a.
【００３１】また、吸込口３を設けた側面パネル２ｂ側
では、羽根１２の外周からの気流の流入が多くなり、羽
根１２の外周部１２ｂの送風作用が促進され、オリフィ
ス１３の吐出側１３ｂに渦が移行することで、渦の吸引
効果により増速する羽根１２の外周部１２ｂから吐出す
る気流は斜め方向に吹き出すが、線材１５ａの楕円形の
長辺を羽根車９の回転軸に向けて斜めに設けることで、
吸込口３を設けた側面パネル２ｂ側でも流速増加による
乱流拡大を抑える。On the side of the side panel 2b provided with the suction port 3, the airflow from the outer periphery of the blade 12 increases, the air blowing action of the outer peripheral portion 12b of the blade 12 is promoted, and the discharge side 13b of the orifice 13 is provided. Due to the movement of the vortex, the air flow discharged from the outer peripheral portion 12b of the blade 12 which is accelerated by the suction effect of the vortex blows out in an oblique direction, but the elliptical long side of the wire 15a is directed toward the rotation axis of the impeller 9. By installing it diagonally,
Even on the side panel 2b side where the suction port 3 is provided, turbulent flow expansion due to an increase in flow velocity is suppressed.
【００３２】従って、箱体２の少なくとも一つの側面パ
ネル２ｂに吸込口３を設け、上面パネル２ａ側に送風機
４を設けた空気調和機の室外機１において、羽根１２の
外周部１２ｂの後縁１２ｅ直後での渦の崩壊による圧力
脈動の増加を抑え、送風騒音の増加を抑えると共に、フ
ァンガード１５での乱流拡大を抑え、ファンガードによ
る乱流騒音の増加を抑える。Therefore, in the outdoor unit 1 of the air conditioner in which the suction port 3 is provided in at least one side panel 2b of the box body 2 and the blower 4 is provided in the upper panel 2a side, the rear edge of the outer peripheral portion 12b of the blade 12 is The increase of pressure pulsation due to the collapse of the vortex immediately after 12e is suppressed, the increase of blast noise is suppressed, the expansion of turbulent flow at the fan guard 15 is suppressed, and the increase of turbulent noise due to the fan guard is suppressed.
【００３３】また、略円筒形のリング１４は、吸込口３
を設けた側板パネル２ｂ側が吸込口３を設けていない側
板パネル２ｂ’側に比べ半径が大きくなるため、線材１
５ａを配設するピッチは吸込口３を設けた側板パネル２
ｂ側が吸込口３を設けていない側板パネル２ｂ’側に比
べ長くなるが、吸込口３を設けた側板パネル２ｂ側では
楕円形の断面形状の線材１５ａを斜めにしているため、
線材１５ａ相互の間隔Ｒは広くならず、従来の螺旋状の
線材１５ａを放射状に広がる支柱１５ｂに取り付ける安
価な工法を変えることなく生産が可能となる。The substantially cylindrical ring 14 has a suction port 3
The side plate panel 2b side provided with the wire has a larger radius than the side plate panel 2b 'side not provided with the suction port 3, so that the wire rod 1
The pitch for arranging 5a is the side plate panel 2 provided with the suction port 3.
Although the side b is longer than the side plate panel 2b ′ side where the suction port 3 is not provided, the side plate panel 2b side provided with the suction port 3 has the elliptical cross-section wire material 15a slanted,
The distance R between the wire rods 15a is not widened, and the production can be performed without changing the conventional inexpensive method for attaching the spiral wire rods 15a to the radially extending columns 15b.
【００３４】以下、本発明の第３の実施の形態について
図６を用いて説明する。尚、第１の実施の形態と同一構
成の部分については重複を避けるため、同一符号を付け
て説明を省略する。The third embodiment of the present invention will be described below with reference to FIG. In addition, in order to avoid duplication, the same components as those in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.
【００３５】図において、略円筒形のリング１６の気流
吹き出し方向高さが、吸込口３を設けた側面パネル２ｂ
側では高く、吸込口３を設けていない側面パネル２ｂ’
側では低くしている。In the figure, the height of the substantially cylindrical ring 16 in the direction of air flow is the side panel 2b provided with the suction port 3.
Side panel 2b 'which is high on the side and is not provided with suction port 3
It is low on the side.
【００３６】この構成により、吸込口３を設けた側面パ
ネル２ｂ側では、羽根１２の外周からの気流の流入が多
くなり羽根１２の外周部１２ｂの送風作用が促進され羽
根１２の外周部１２ｂから斜め方向に吹き出す気流を、
リング１６の気流吹き出し方向高さを高くすることで、
羽根車９の回転軸と同方向に気流を向ける。With this configuration, on the side surface panel 2b side provided with the suction port 3, the inflow of airflow from the outer periphery of the blade 12 is increased, the air blowing action of the outer peripheral portion 12b of the blade 12 is promoted, and from the outer peripheral portion 12b of the blade 12. The airflow that blows out diagonally,
By increasing the height of the air flow direction of the ring 16,
The airflow is directed in the same direction as the rotation axis of the impeller 9.
【００３７】従って、箱体２の少なくとも一つの側面パ
ネル２ｂに吸込口３を設け、上面パネル２ａ側に送風機
４を設けた空気調和機の室外機１において、羽根１２の
外周部１２ｂの後縁１２ｅ直後での渦の崩壊による圧力
脈動の増加を抑え、送風騒音の増加を抑えると共に、吸
込口３を設けた側面パネル２ｂ側の送風機４の吹き出し
気流が斜めに吹きだし、吸込口３から直接吸い込まれる
ショートサーキットを起こすことを防ぐ。Therefore, in the outdoor unit 1 of the air conditioner in which the suction port 3 is provided in at least one side panel 2b of the box body 2 and the blower 4 is provided on the upper panel 2a side, the rear edge of the outer peripheral portion 12b of the blade 12 is In addition to suppressing the increase of pressure pulsation due to the collapse of the vortex immediately after 12e and suppressing the increase of the blowing noise, the blowout airflow of the blower 4 on the side of the side panel 2b provided with the suction port 3 blows out obliquely and is sucked directly from the suction port 3. To prevent a short circuit from occurring.
【００３８】[0038]
【発明の効果】以上のように本発明によれば、箱体の少
なくとも一つの側面パネルに吸込口を設け、上面パネル
側に送風機を設けた空気調和機の室外機において、リン
グ内壁近傍の負圧部に羽根外周部の吐出部の圧力面側か
らの回り込む気流が誘引され、羽根外周部の負圧側の後
縁直後で渦が急激に崩壊せず、オリフィス吐出側に移行
する。従って、羽根外周部の後縁の直後での圧力変動が
防止され、羽根全体の圧力脈動の増加を抑え、送風騒音
の増加を抑えるという有効な効果が得られる。As described above, according to the present invention, in the outdoor unit of the air conditioner in which at least one side panel of the box body is provided with the suction port, and the blower is provided on the upper panel side, the negative wall near the inner wall of the ring An air flow that wraps around from the pressure surface side of the discharge portion of the blade outer peripheral portion is attracted to the pressure portion, and the vortex does not abruptly collapse immediately after the trailing edge of the negative pressure side of the blade outer peripheral portion and moves to the orifice discharge side. Therefore, the pressure fluctuation immediately after the trailing edge of the blade outer peripheral portion is prevented, and an effective effect of suppressing an increase in pressure pulsation of the entire blade and suppressing an increase in blast noise can be obtained.
【００３９】また、ファンガードの配設された線材部で
の流速増加によるカルマン渦等の乱流が拡大を、線材の
断面形状にてこの乱流拡大を抑えると共に、従来の螺旋
状の線材を放射状に広がる支柱に取り付ける安価な工法
を変えることなく生産が可能となるという有効な効果が
得られる。Further, the turbulent flow such as Karman vortex expands due to the increase of the flow velocity in the wire portion where the fan guard is disposed, and the turbulent flow expansion is suppressed by the cross-sectional shape of the wire material, and the conventional spiral wire material is used. The effective effect is that production can be performed without changing the inexpensive construction method for mounting on radially extending columns.
【００４０】また、さらに、吸込口を設けた側面パネル
側の送風機の吹き出し気流が斜めに吹きだし、吸い込み
口から直接吸い込まれるショートサーキットを起こすこ
とを防ぐという有効な効果が得られる。Further, it is possible to obtain an effective effect of preventing a short circuit in which the blowout airflow of the blower on the side panel side provided with the suction port is obliquely blown out and is directly sucked from the suction port.
【図１】本発明の第１の実施の形態による空気調和機の
室外機の縦断面図FIG. 1 is a vertical sectional view of an outdoor unit for an air conditioner according to a first embodiment of the present invention.
【図２】同実施の形態よる気流の状態を示す要部縦断面
図FIG. 2 is a longitudinal sectional view of a main part showing a state of airflow according to the same embodiment.
【図３】本発明の第２の実施の形態による空気調和機の
室外機の上面パネル側の正面図FIG. 3 is a front view of the upper panel side of the outdoor unit of the air conditioner according to the second embodiment of the present invention.
【図４】同実施の形態による気流の流れを示す要部縦断
面図FIG. 4 is a vertical cross-sectional view of a main part showing the flow of airflow according to the same embodiment.
【図５】同実施の形態による気流の流れを示す要部縦断
面図FIG. 5 is a longitudinal cross-sectional view of a main part showing the flow of airflow according to the same embodiment.
【図６】本発明の第３の実施の形態による気流の状態を
示す要部縦断面図FIG. 6 is a longitudinal sectional view of an essential part showing a state of airflow according to a third embodiment of the present invention.
【図７】従来の空気調和機の室外機の横断面図FIG. 7 is a cross-sectional view of an outdoor unit of a conventional air conditioner.
【図８】従来の空気調和機の室外機の気流の状態を示す
要部縦断面図FIG. 8 is a vertical cross-sectional view of a main part showing a state of airflow in an outdoor unit of a conventional air conditioner.
【図９】従来の空気調和機の室外機に吹き出しガイドを
取り付けた場合の縦断面図FIG. 9 is a vertical cross-sectional view of a conventional air conditioner outdoor unit equipped with a blowing guide.
１ 空気調和機の室外機本体 ２ 箱体 ２ａ 上面パネル ２ｂ，２ｂ’側面パネル ３ 吸込口 ４ 送風機 ５ 熱交換器 ６ 圧縮機 ７，１５ ファンガード ８ モータ ９ 羽根車 １３ オリフィス １３ｂ 吹出側 １４，１６ リング １４ｂ 吹き出し口 １５ａ 線材 1 Air conditioner outdoor unit main body 2 Box body 2a Top panel 2b, 2b 'Side panel 3 Suction port 4 Blower 5 Heat exchanger 6 Compressor 7,15 Fan guard 8 Motor 9 Impeller 13 Orifice 13b Outlet side 14, 16 Ring 14b Outlet 15a Wire
Claims (3)
面パネルに設けられた吸込口と、前記箱体の上面パネル
側に設けた送風機と、前記箱体内の吸込口側に設けた熱
交換器と、圧縮機と、及び前記送風機の吐出側に設けら
れたファンガードで構成され、前記送風機は、モータ
と、前記モータに取り付けられた羽根車と、前記羽根車
の外周を囲むオリフィスと、前記オリフィスの吐出側に
設けられたオリフィスの最小内径より大の内径をもつ略
円筒形のリングとから成り、前記リングは、前記吸込口
を設けた側面パネル側では、前記吸込口を設けていない
側面パネル側に比べ、前記オリフィスの最小内径とリン
グの内径の差が大きい空気調和機の室外機。1. A box, a suction port provided on at least one side panel of the box, a blower provided on the top panel side of the box, and a heat provided on the suction side of the box. The fan comprises a exchanger, a compressor, and a fan guard provided on the discharge side of the blower. The blower has a motor, an impeller attached to the motor, and an orifice surrounding the outer circumference of the impeller. A substantially cylindrical ring having an inner diameter larger than the minimum inner diameter of the orifice provided on the discharge side of the orifice, the ring having the suction port on the side panel side having the suction port. An air conditioner outdoor unit in which the difference between the minimum inner diameter of the orifice and the inner diameter of the ring is larger than that on the side panel side which is not present.
円、あるいは、長方形の断面形状の線材を螺旋状に配設
したファンガードを取り付け、前記吸込口を設けた側面
パネル側では、前記線材の楕円形、あるいは長方形の断
面形状の長辺を前記羽根車の回転軸に向けて斜めに傾
け、前記吸込口を設けていない側面パネル側では前記線
材の楕円形、あるいは長方形の断面形状の長辺を前記羽
根車の回転軸に平行に設け、前記線材を配設するピッチ
を前記吸込口を設けた側面のパネル側では、前記吸込口
を設けていない側面パネル側に比べ大きくした請求項１
記載の空気調和機の室外機。2. A wire guard is attached to the airflow outlet of a substantially cylindrical ring with an elliptical or rectangular wire having a spiral cross section, and the wire is provided on the side panel side provided with the suction port. Of the elliptical or rectangular cross-section, the long side is inclined toward the rotation axis of the impeller, and on the side panel side where the suction port is not provided, the wire has an elliptical or rectangular cross-section. The side is provided in parallel with the rotation axis of the impeller, and the pitch for arranging the wire is made larger on the side of the side panel provided with the suction port than on the side of the side panel not provided with the suction port.
The outdoor unit of the air conditioner described.
さが、箱体の吸込口を設けた側面パネル側では高く、前
記吸込口を設けていない側面パネル側では低い請求項１
記載の空気調和機の室外機。3. The height of the substantially cylindrical ring in the direction of air flow is high on the side panel side of the box provided with the suction port and low on the side panel side not provided with the suction port.
The outdoor unit of the air conditioner described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29673995A JPH09137970A (en) | 1995-11-15 | 1995-11-15 | Outdoor unit for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29673995A JPH09137970A (en) | 1995-11-15 | 1995-11-15 | Outdoor unit for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09137970A true JPH09137970A (en) | 1997-05-27 |
Family
ID=17837483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29673995A Pending JPH09137970A (en) | 1995-11-15 | 1995-11-15 | Outdoor unit for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09137970A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0922911A3 (en) * | 1997-12-11 | 2001-06-20 | Hitachi, Ltd. | An outdoor unit of an air-conditioning system |
| CN1333207C (en) * | 2002-11-08 | 2007-08-22 | 大金工业株式会社 | Fan guard for blower unit |
| WO2013183710A1 (en) * | 2012-06-07 | 2013-12-12 | 三菱電機株式会社 | Air conditioning outdoor unit |
| JPWO2013183710A1 (en) * | 2012-06-07 | 2016-02-01 | 三菱電機株式会社 | Air conditioner outdoor unit |
| WO2017068724A1 (en) * | 2015-10-23 | 2017-04-27 | 三菱電機株式会社 | Outdoor unit for air conditioning device |
| CN109171158A (en) * | 2018-11-08 | 2019-01-11 | 浙江诗杭电器有限公司 | A kind of hair dryer |
| JPWO2019215783A1 (en) * | 2018-05-07 | 2020-12-17 | 三菱電機株式会社 | Outdoor unit for blower and air conditioner |
-
1995
- 1995-11-15 JP JP29673995A patent/JPH09137970A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0922911A3 (en) * | 1997-12-11 | 2001-06-20 | Hitachi, Ltd. | An outdoor unit of an air-conditioning system |
| CN1333207C (en) * | 2002-11-08 | 2007-08-22 | 大金工业株式会社 | Fan guard for blower unit |
| CN104334974B (en) * | 2012-06-07 | 2017-09-22 | 三菱电机株式会社 | Air-conditioner outdoor unit |
| WO2013183710A1 (en) * | 2012-06-07 | 2013-12-12 | 三菱電機株式会社 | Air conditioning outdoor unit |
| WO2013183145A1 (en) * | 2012-06-07 | 2013-12-12 | 三菱電機株式会社 | Air conditioning outdoor unit |
| JPWO2013183710A1 (en) * | 2012-06-07 | 2016-02-01 | 三菱電機株式会社 | Air conditioner outdoor unit |
| EP2889543A4 (en) * | 2012-06-07 | 2016-07-20 | Mitsubishi Electric Corp | Air conditioning outdoor unit |
| US9702571B2 (en) | 2012-06-07 | 2017-07-11 | Mitsubishi Electric Corporation | Air conditioner outdoor unit |
| WO2017068724A1 (en) * | 2015-10-23 | 2017-04-27 | 三菱電機株式会社 | Outdoor unit for air conditioning device |
| JPWO2017068724A1 (en) * | 2015-10-23 | 2018-04-26 | 三菱電機株式会社 | Air conditioner outdoor unit |
| JPWO2019215783A1 (en) * | 2018-05-07 | 2020-12-17 | 三菱電機株式会社 | Outdoor unit for blower and air conditioner |
| CN109171158A (en) * | 2018-11-08 | 2019-01-11 | 浙江诗杭电器有限公司 | A kind of hair dryer |
| CN109171158B (en) * | 2018-11-08 | 2024-01-12 | 浙江诗杭电器有限公司 | Hair drier |
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