JP2504521B2 - Outdoor unit of air conditioner - Google Patents
Outdoor unit of air conditionerInfo
- Publication number
- JP2504521B2 JP2504521B2 JP10623288A JP10623288A JP2504521B2 JP 2504521 B2 JP2504521 B2 JP 2504521B2 JP 10623288 A JP10623288 A JP 10623288A JP 10623288 A JP10623288 A JP 10623288A JP 2504521 B2 JP2504521 B2 JP 2504521B2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- bell mouth
- outdoor
- heat exchanger
- outdoor unit
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/40—Vibration or noise prevention at outdoor units
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） この発明は、Ｌ字形状又はＵ字形状に構成された室外
側熱交換器と、軸流ファンとを有した空調機の室外ユニ
ットに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention is directed to an air conditioner having an outdoor heat exchanger configured in an L shape or a U shape and an axial fan. Outdoor unit.
（従来の技術） 空調機の室外ユニットには、Ｌ字形状又はＵ字形状の
室外側熱交換器に、斜流ファン又はプロペラファンなど
軸流ファンから構成される室外ファンを組合わせたもの
がある。(Prior Art) An outdoor unit of an air conditioner is a combination of an L-shaped or U-shaped outdoor heat exchanger and an outdoor fan including an axial fan such as a mixed flow fan or a propeller fan. is there.
例えば、Ｌ字形状の熱交換器をもつ室外ユニットで
は、従来、第11図に示されるようにキャビネット１を仕
切板２で左右に仕切り、キャビネット１内の一方側に熱
交換室３を形成し、他方側に圧縮機室４を形成する。こ
の熱交換室３の左側部および背面部に形成された吸込口
3aに対向して、Ｌ字形状の室外側熱交換器５をキャビネ
ット１内に設置する他、この室外側熱交換器５のＲ部5a
で囲まれる内側に、キャビネット１の前面壁に吹出口3b
に対向して、斜流ファン６を、該ファン６を駆動するフ
ァンモータ6aと共に設ける。むろん、斜流ファン６の吸
込側は室外側熱交換器５に配置される。そして、吹出口
3bの開口縁に斜流ファン６の吹出側（後縁側）を囲むよ
うに円筒状のベルマウス７を設けることが行われ、ファ
ンモータ６を駆動することにより吸込口3aから外気を導
入して、室外側熱交換器５と熱交換させるようにしてい
る。なお、圧縮機室４内には圧縮機８が設置されてい
る。但し、９はキャビネット１に設けた室内ユニット
（図示しない）と取り合うパックドバルブである。For example, in an outdoor unit having an L-shaped heat exchanger, conventionally, as shown in FIG. 11, a cabinet 1 is divided into left and right by a partition plate 2 and a heat exchange chamber 3 is formed on one side of the cabinet 1. , The compressor chamber 4 is formed on the other side. Suction ports formed on the left side and the back side of the heat exchange chamber 3.
In addition to installing the L-shaped outdoor heat exchanger 5 inside the cabinet 1 so as to face 3a, the R portion 5a of this outdoor heat exchanger 5
Inside, surrounded by, the outlet 3b on the front wall of the cabinet 1
The mixed flow fan 6 is provided opposite to the above together with the fan motor 6a for driving the fan 6. Of course, the suction side of the mixed flow fan 6 is arranged in the outdoor heat exchanger 5. And the outlet
A cylindrical bell mouth 7 is provided on the opening edge of 3b so as to surround the outlet side (rear edge side) of the mixed flow fan 6, and by driving the fan motor 6, outside air is introduced from the suction port 3a. The heat is exchanged with the outdoor heat exchanger 5. A compressor 8 is installed in the compressor room 4. However, 9 is a packed valve that fits with an indoor unit (not shown) provided in the cabinet 1.
ところで、こうした室外ユニットの室外ファン10に
は、従来より、第12図および第13図に示されるような外
径Ｄ0が一定な斜流ファン６（又はプロペラファン）が
用いられている。By the way, as the outdoor fan 10 of such an outdoor unit, a mixed flow fan 6 (or propeller fan) having a constant outer diameter D 0 as shown in FIGS. 12 and 13 has been conventionally used.
（発明が解決しようとする課題） ところが、このような室外ファン10を用いた室外ユニ
ットは、ユニットを小形にするためにキャビネット１の
奥行き，幅寸法を小さくして、室外側熱交換器５の端部
に近接させると、室外側熱交換器５のＲ部5a（円弧状の
曲成部）に、斜流ファン６の外周端が接近しすぎて、騒
音が高くなる欠点があった。また騒音を小さくしよう
と、Ｒ部5aと斜流ファン６の外周端との間の距離を大き
くすると、外径Ｄ0の小さな斜流ファン６となって所定
の風量が出ないので、室外側熱交換器５をその分、大き
くしなければならず、小形化および軽量化が難しいもの
であった。(Problems to be Solved by the Invention) However, in an outdoor unit using such an outdoor fan 10, the depth and width dimensions of the cabinet 1 are reduced in order to make the unit small, and the outdoor heat exchanger 5 has a smaller size. When it is brought close to the end, the outer peripheral end of the mixed flow fan 6 is too close to the R portion 5a (arc-shaped curved portion) of the outdoor heat exchanger 5, and there is a drawback that noise is increased. Further, if the distance between the R portion 5a and the outer peripheral end of the mixed flow fan 6 is increased in order to reduce noise, the mixed flow fan 6 having a small outer diameter D 0 does not generate a predetermined air volume, so that the outdoor side. The heat exchanger 5 had to be made larger by that amount, and it was difficult to reduce the size and weight.
この発明はこのような事情に着目してなされたもの
で、その目的とするところは、騒音ならびに大風量を確
保しつつ小形化を図ることができる空調機の室外ユニッ
トを提供することにある。The present invention has been made in view of such circumstances, and an object thereof is to provide an outdoor unit of an air conditioner which can be downsized while ensuring noise and large air volume.
［発明の構成］ （課題を解決するための手段） 上記目的を達成するために、軸流ファンのベルマウス
で囲まれたブレード部分をベルマウスの円筒形状になら
う外径とし、この軸流ファンのベルマウスから室外側熱
交換器へ突出するブレード部分の外径を、前縁にいくに
したがって漸次縮小する。[Configuration of the Invention] (Means for Solving the Problems) In order to achieve the above object, the blade portion of the axial fan surrounded by the bell mouth has an outer diameter that follows the cylindrical shape of the bell mouth. The outer diameter of the blade portion protruding from the bell mouth of the fan to the outdoor heat exchanger is gradually reduced toward the leading edge.
（作用） 軸流ファンのブレードのベルマウス内の後縁部分は、
大風量が確保される部位となる最大径を含む部分とな
り、同ベルマウスから突出した前縁部分は、室外ユニッ
トを小形化しても、外周端が室外側熱交換器の曲成部に
極端に接近しない構造となって、低騒音と大風量とを維
持する。(Function) The trailing edge portion of the blade of the axial fan inside the bell mouth is
The front edge that protrudes from the bell mouth is the part that includes the maximum diameter that ensures a large air volume, and even if the outdoor unit is downsized, the outer peripheral edge is extremely curved to the curved part of the outdoor heat exchanger. The structure does not approach, and low noise and large air volume are maintained.
（実施例） 以下、このは発明を第１図ないし第４図に示す第１の
実施例にもとづいて説明する。但し、図面において、先
の「従来の技術」の項で述べたものと同じ構成部品には
同一符号を付してその説明を省略し、この項では異なる
部位（発明の要部）について説明することにする。(Embodiment) Hereinafter, the present invention will be described based on a first embodiment shown in FIGS. 1 to 4. However, in the drawings, the same reference numerals are given to the same components as those described in the above-mentioned "Prior Art", and the description thereof will be omitted. In this paragraph, different parts (the essential parts of the invention) will be described. I will decide.
本実施例は、室外ファン10を構成する斜流ファン６
（軸流ファン）のブレード形状の点で異なっている。す
なわち、斜流ファン６を構成する複数枚のブレード20に
は、第１図および第２図に示されるように符号Ｈ1およ
びｌ1の範囲で示した、ベルマウス７に囲まれた吹出側
のブレード部分21（ベルマウス７とラップした部分）を
ベルマウス７の円筒（内面）形状にならう一定な外径Ｄ
0にして最外径部に定める。そして、このブレード部分2
1と連なる符号Ｈ2およびｌ2で示した、ベルマウス７か
ら吸込口3a側に向って突出する前縁側のブレード部分22
の外径を、前縁（室外側熱交換器５側）に向かうにした
がって漸次縮小した構造が用いられている。但し、Ｄ1
は斜流ファン６の縮小した前縁側の外径を示す（Ｄ0＞
Ｄ1）。In this embodiment, the mixed flow fan 6 that constitutes the outdoor fan 10 is used.
They differ in the shape of the blade (axial fan). That is, the plurality of blades 20 constituting the mixed flow fan 6 have a blow-out side surrounded by the bell mouth 7, which is indicated by ranges H 1 and l 1 as shown in FIGS. 1 and 2. A constant outer diameter D that follows the blade part 21 (the part that overlaps the bell mouth 7) of the bell mouth 7 with the cylindrical (inner surface) shape.
Set to 0 for the outermost diameter. And this blade part 2
A blade portion 22 on the front edge side, which is indicated by reference numerals H 2 and l 2 connected to 1, and which protrudes from the bell mouth 7 toward the suction port 3a side.
The outer diameter of is gradually reduced toward the front edge (outdoor heat exchanger 5 side). However, D 1
Indicates the reduced outer diameter of the mixed flow fan 6 on the leading edge side (D 0 >).
D 1 ).
なお、ファンモータ6aは斜流ファン６の円錐台形状を
なしたボスプレート6cの内部に収容され、モータベース
6cを介してキャビネット１の前面壁に支持されているも
のである。またベルマウス７の出口側は、出口に向かう
にしたがい拡開するテーパ形状となっていて、斜流吹き
出しに適した形状としている。The fan motor 6a is housed inside the truncated cone-shaped boss plate 6c of the mixed flow fan 6, and the motor base
It is supported by the front wall of the cabinet 1 via 6c. Further, the outlet side of the bell mouth 7 has a tapered shape that widens toward the outlet, which is suitable for oblique flow blowing.
しかして、斜流ファン６を有する室外ユニットは、キ
ャビネット１の奥行きおよび幅寸法を小さくし、室外側
熱交換器５の端部に近接していくと、室外側熱交換器５
のＲ部5aと、斜流ファン６の外周端とが接近しすぎてし
まうことが指摘される。Therefore, in the outdoor unit having the mixed flow fan 6, when the depth and width dimensions of the cabinet 1 are reduced and the end portion of the outdoor heat exchanger 5 is approached, the outdoor heat exchanger 5 is
It is pointed out that the R portion 5a and the outer peripheral end of the mixed flow fan 6 are too close to each other.
しかし、この発明によると、ブレード20の前縁側の外
径Ｄ1は前縁に向かうにしたがって漸次縮小している。
このことは、Ｒ部5aにおいて、ある程度の離間距離を確
保することができる。しかるに、室外側熱交換器５と斜
流ファン６とが接近して、斜流ファン６の漸次縮小した
外周端部分が逃げとなって、斜流ファン６とＲ部5aとが
極端に接近しないようになる。However, according to the present invention, the outer diameter D 1 of the blade 20 on the leading edge side is gradually reduced toward the leading edge.
This makes it possible to secure a certain distance in the R portion 5a. However, the outdoor heat exchanger 5 and the mixed flow fan 6 come close to each other, and the gradually reduced outer peripheral end portion of the mixed flow fan 6 becomes a relief, and the mixed flow fan 6 and the R portion 5a do not come extremely close to each other. Like
したがって、騒音の上昇を抑制、かつ大風量を維持し
ながら、斜流ファン６の全体を室外側熱交換器５側に寄
せることができ、低騒音で小形の室外ユニットを実現す
ることができる。特に、この効果は室外ファン10の最大
径と前縁側の径との比（Ｄ1＞Ｄ0）が、ある範囲のとき
に有効である。実験によれば、第３図に示す室外側熱交
換器５の左側端とそれに隣接するブレード部分の外周端
までのＡ寸法を同一にして、騒音と「Ｄ1/D0」との関係
を調べた結果、第４図に示されるような結果が得られ、
この結果から「0.90＜Ｄ1/D0＜0.98」の範囲内はＲ部5a
と斜流ファン６との距離が近づいても、騒音の上昇が小
さくてすむことがわかった。Therefore, it is possible to bring the entire mixed flow fan 6 closer to the outdoor heat exchanger 5 side while suppressing an increase in noise and maintaining a large air volume, and it is possible to realize a small outdoor unit with low noise. In particular, this effect is effective when the ratio (D 1 > D 0 ) of the maximum diameter of the outdoor fan 10 to the diameter on the front edge side is within a certain range. According to the experiment, the A dimension between the left end of the outdoor heat exchanger 5 shown in FIG. 3 and the outer peripheral end of the blade portion adjacent thereto is made the same, and the relation between noise and "D 1 / D 0 " is shown. As a result of the investigation, the result shown in FIG. 4 was obtained,
From this result, if the range of "0.90 <D 1 / D 0 <0.98" is R part 5a
It was found that the noise rise was small even when the distance between the mixed flow fan 6 and the mixed flow fan 6 was reduced.
なお、この発明は第１の実施例に限らず、第５図およ
び第６図に示される第２の実施例、第７図ないし第10図
に示される第３の実施例のようにしてもよい。The present invention is not limited to the first embodiment, but may be applied to the second embodiment shown in FIGS. 5 and 6 and the third embodiment shown in FIGS. 7 to 10. Good.
すなわち、第２の実施例は斜流ファンでなく、プロペ
ラファン25（軸流ファン）にこの発明を適用したもので
ある。このプロペラファン25においても、「0.90＜Ｄ1/
D0＜0.98」の範囲で顕著な効果を示すものであった。That is, in the second embodiment, the present invention is applied to the propeller fan 25 (axial flow fan) instead of the mixed flow fan. Even with this propeller fan 25, "0.90 <D 1 /
A remarkable effect was exhibited in the range of D 0 <0.98.
なお、第５図および第６図において、第１図および第
２図と同じ部分には同一符号を付してその説明を省略し
た。In FIGS. 5 and 6, the same parts as those in FIGS. 1 and 2 are designated by the same reference numerals and their description is omitted.
第３の実施例は、第２の実施例の変形例で、傾斜した
ベルマウス７とプロペラファン25とを組合わせた室外フ
ァンに、この発明を適用したものである。The third embodiment is a modification of the second embodiment, in which the present invention is applied to an outdoor fan in which an inclined bell mouth 7 and a propeller fan 25 are combined.
具体的には、内径が出口側になるにしたがって漸次拡
大する円筒形状のベルマウス７を用い、そのベルマウス
７の拡大にしたがって、ベルマウス７で囲まれるプロペ
ラファン25のブレード部分26も、ベルマウス７の内面形
状にならう外径となるように径寸法を漸次、拡大したも
のである。Specifically, a cylindrical bell mouth 7 that gradually expands as the inner diameter becomes closer to the outlet side is used. As the bell mouth 7 expands, the blade portion 26 of the propeller fan 25 surrounded by the bell mouth 7 also The diameter is gradually enlarged so that the outer diameter follows the shape of the inner surface of the mouse 7.
こうした構造は、冷房，暖房の広い使用範囲で最適な
送風効率を得ることができると同時に、衝突，渦の発生
による圧損，さらにはそれによる騒音の発生を防ぐこと
ができる。With such a structure, it is possible to obtain the optimum blowing efficiency in a wide range of use for cooling and heating, and at the same time, to prevent pressure loss due to collision and vortex generation, and further to prevent noise generation.
すなわち、一般に第10図のように室外ファンは、冷房
に適した低静圧となるようにしてあるので、暖房運転に
より室外ファンに霜が付いて送風負荷が増加すると、CU
2/U2（第７図中に図示）が減少して、軸流成分より遠心
成分が大きくなり、ブレード20を流れる空気がベルマウ
ス７の内周面に当たってしまう（圧損，騒音の発生の原
因）。That is, as shown in FIG. 10, the outdoor fan generally has a low static pressure suitable for cooling, so if the outdoor fan is frosted by the heating operation and the blast load increases, CU
2 / U 2 (shown in FIG. 7) decreases, the centrifugal component becomes larger than the axial component, and the air flowing through the blade 20 hits the inner peripheral surface of the bell mouth 7 (the cause of pressure loss and noise). ).
そこで、その空気の流れに沿った形となるよう、ベル
マウス７およびブレード部分26を出力側になるにしたが
って拡大する構造を用いて、圧損，騒音の発生を防いで
いる。Therefore, a structure in which the bell mouth 7 and the blade portion 26 are enlarged toward the output side so that the shape follows the flow of the air is used to prevent generation of pressure loss and noise.
実験によれば、Ｄ3/D0,D2/D1で示されるプロペラファ
ン25の外径，ベルマウス７の内径の拡大率を調べた結
果、第９図のような送風特性が得られた。According to the experiment, the expansion ratio of the outer diameter of the propeller fan 25 and the inner diameter of the bell mouth 7 indicated by D 3 / D 0 and D 2 / D 1 was examined, and as a result, the blowing characteristics as shown in FIG. 9 were obtained. It was
ここで、第９図の実線には、Ｄ3/D1＝1.0（Ｄ3＝
Ｄ0）、Ｄ2/D1＝1.0（Ｄ1＝400,D2＝420）、破線には、
Ｄ3/D0＝1.1（Ｄ3＝363）、Ｄ2/D1＝1.1（Ｄ1＝420,D2
＝383）、一点鎖線には、Ｄ3/D0＝1.2（Ｄ3＝333）、Ｄ
2/D1＝1.2（Ｄ1＝420,D2＝313）といった各仕様が示さ
れている。Here, in the solid line of FIG. 9, D 3 / D 1 = 1.0 (D 3 =
D 0 ), D 2 / D 1 = 1.0 (D 1 = 400, D 2 = 420), the broken line
D 3 / D 0 = 1.1 (D 3 = 363), D 2 / D 1 = 1.1 (D 1 = 420, D 2
= 383), the one-dot chain line shows D 3 / D 0 = 1.2 (D 3 = 333), D
Each specification such as 2 / D 1 = 1.2 (D 1 = 420, D 2 = 313) is shown.
但し、いずれもＤ0（ファン外径）はΦ400,ファン回
転数は750rpmのときの特性を示している。However, in each case, D 0 (fan outer diameter) is Φ400, and the fan speed is 750 rpm.
こうした実験を各種、行った結果、「1.05〜1.15」の
範囲が良く、特に冷房，暖房のような広い仕使用範囲で
は「Ｄ3/D0＝1.1程度」が最も良いものであることがわ
かった。These experiments various, as a result of, well in the range of "1.05 to 1.15", in particular cooling, found that "about D 3 / D 0 = 1.1" is of the best in a broad specifications used range such as heating It was
［発明の効果］ 以上説明したようにこの発明によれば、ベルマウスで
囲まれた後縁側のブレード部分が最大径を含む部分、ベ
ルマウスから突出した前縁側のブレード部分が逃げとな
る軸流ファンが構成されるから、軸流ファン、室外ユニ
ットを小形化にしても、大風量を維持する能力を有しな
がら、室外側熱交換器の曲成部がブレードの外周端と極
端に接近しない構造となる。[Effect of the Invention] As described above, according to the present invention, the blade portion on the trailing edge side surrounded by the bell mouth includes the maximum diameter, and the blade portion on the leading edge side protruding from the bell mouth is the axial flow. Since the fan is configured, even if the axial flow fan and the outdoor unit are downsized, the curved portion of the outdoor heat exchanger does not come extremely close to the outer peripheral edge of the blade while maintaining the ability to maintain a large air volume. It becomes a structure.
したがって、低騒音と大風量とが維持された小形の室
外ユニットを提供することができる。Therefore, it is possible to provide a small outdoor unit in which low noise and large air volume are maintained.
第１図ないし第４図はこの発明の第１の実施例を示し、
第１図は要部となる斜流ファンをベルマウスと共に示す
側面図、第２図はその正面図、第３図はその斜流ファン
を適用した室外ユニットを示す平断面図、第４図はその
斜流ファンの縮小比に対する特性を示す線図、第５図は
この発明の第２の実施例の要部のプロペラファンをベル
マウスと共に示す側面図、第６図はそのプロペラファン
の正面図、第７図はこの発明の第３の実施例の要部とな
るプロペラファンを、ベルマウスと共に示す側面図、第
８図はそのプロペラファンの正面図、第９図はベルマウ
スおよびプロペラファンの拡大比に対する特性を示す線
図、第10図は冷房運転と暖房運転とで室外ファンの特性
が変化（霜付きによる）することを示した線図、第11図
は従来の室外ユニットを示す平断面図、第12図はその室
外ファンの正面図、第13図はその室外ファンをベルマウ
スと共に示す側面図である。 １……キャビネット、3a……吸込口、3b……吹出口、５
……室外側熱交換器、６……斜流ファン（軸流ファ
ン）、７……ベルマウス、20……ブレード。1 to 4 show a first embodiment of the present invention,
FIG. 1 is a side view showing a mixed flow fan as a main part together with a bell mouth, FIG. 2 is a front view thereof, FIG. 3 is a plan sectional view showing an outdoor unit to which the mixed flow fan is applied, and FIG. FIG. 5 is a diagram showing characteristics of the mixed flow fan with respect to a reduction ratio, FIG. 5 is a side view showing a propeller fan of a second embodiment of the present invention together with a bell mouth, and FIG. 6 is a front view of the propeller fan. FIG. 7 is a side view showing a propeller fan, which is a main part of a third embodiment of the present invention, together with a bell mouth, FIG. 8 is a front view of the propeller fan, and FIG. 9 is a bell mouth and a propeller fan. Fig. 10 is a diagram showing the characteristics with respect to the expansion ratio, Fig. 10 is a diagram showing that the characteristics of the outdoor fan change (due to frost) between the cooling operation and the heating operation, and Fig. 11 is a plan view showing the conventional outdoor unit. Sectional view, Figure 12 is a front view of the outdoor fan, FIG. 13 is a side view of the outdoor fan with bellmouth. 1 ... Cabinet, 3a ... Suction port, 3b ... Outlet port, 5
…… Outdoor heat exchanger, 6 …… Diagonal flow fan (axial flow fan), 7 …… Bell mouth, 20 …… Blade.
Claims (1)
熱交換器５を設け、この室外側熱交換器５の曲成部分5a
で囲まれる側に、吸込側を前記室外側熱交換器側に配置
して軸流ファン６を設け、前記軸流ファン６の周囲に同
ファン６の後縁側を囲むようにベルマウス７を設けてな
る空調機の室外ユニットにおいて、前記ベルマウス７で
囲まれた前記軸流ファン６のブレード部分21を前記ベル
マウス７の内面形状にならう外形とし、前記ベルマウス
７から前記室外側熱交換器５へ突出する前記軸流ファン
６のブレード部分22の外径を前縁にいくにしたがって漸
次縮小したことを特徴とする空調機の室外ユニット。1. An outdoor heat exchanger 5 having an L-shape or U-shape is provided, and a bent portion 5a of the outdoor heat exchanger 5 is provided.
On the side surrounded by, the suction side is arranged on the outdoor heat exchanger side to provide the axial fan 6, and the bell mouth 7 is provided around the axial fan 6 so as to surround the rear edge side of the fan 6. In the outdoor unit of the air conditioner, the blade portion 21 of the axial fan 6 surrounded by the bell mouth 7 has an outer shape that conforms to the inner surface shape of the bell mouth 7, and the bell mouth 7 exchanges heat with the outdoor side. An outdoor unit for an air conditioner, characterized in that the outer diameter of the blade portion 22 of the axial fan 6 projecting into the device 5 is gradually reduced toward the front edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10623288A JP2504521B2 (en) | 1988-04-28 | 1988-04-28 | Outdoor unit of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10623288A JP2504521B2 (en) | 1988-04-28 | 1988-04-28 | Outdoor unit of air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01277147A JPH01277147A (en) | 1989-11-07 |
| JP2504521B2 true JP2504521B2 (en) | 1996-06-05 |
Family
ID=14428377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10623288A Expired - Lifetime JP2504521B2 (en) | 1988-04-28 | 1988-04-28 | Outdoor unit of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2504521B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5611360B2 (en) * | 2010-09-14 | 2014-10-22 | 三菱電機株式会社 | Outdoor unit blower, outdoor unit and refrigeration cycle apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5425509A (en) * | 1977-07-28 | 1979-02-26 | Sumitomo Precision Prod Co | Lower noise fan |
| JPS61122431A (en) * | 1984-11-19 | 1986-06-10 | Matsushita Electric Ind Co Ltd | Front grille of air conditioner |
| JPS63113236A (en) * | 1986-10-27 | 1988-05-18 | Sanyo Electric Co Ltd | Heat exchanger |
-
1988
- 1988-04-28 JP JP10623288A patent/JP2504521B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01277147A (en) | 1989-11-07 |
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