JP2001050189A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP2001050189A JP2001050189A JP11219576A JP21957699A JP2001050189A JP 2001050189 A JP2001050189 A JP 2001050189A JP 11219576 A JP11219576 A JP 11219576A JP 21957699 A JP21957699 A JP 21957699A JP 2001050189 A JP2001050189 A JP 2001050189A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- outer diameter
- blades
- fan
- impeller
- 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.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、室内機の内部にフ
ァンを備えた空気調和機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a fan inside an indoor unit.
【０００２】[0002]
【従来の技術】近年、空気調和機においては、省電力化
が叫ばれ、同じ電気入力に対する室内熱交換器の熱交換
量を増大させる必要がある。熱交換量増大の一要素とし
て、室内ファンの高風量化が考えられるが、高風量化に
伴い騒音が増大するため、高風量・低騒音・高効率の室内
ファンが求められている。2. Description of the Related Art In recent years, in air conditioners, power saving has been called for, and it is necessary to increase the amount of heat exchange of an indoor heat exchanger for the same electric input. As one element of the increase in the amount of heat exchange, it is conceivable to increase the air flow of the indoor fan. However, since the noise increases with the increase in the air flow, an indoor fan having a high air flow, low noise, and high efficiency is required.
【０００３】この室内ファンの高風量化を図る手段とし
て、室内ファンの回転数を上げること、または、室内フ
ァンである貫流ファンの外径を大きくすることが考えら
れる。As means for increasing the air volume of the indoor fan, it is conceivable to increase the rotation speed of the indoor fan or to increase the outer diameter of the once-through fan which is an indoor fan.
【０００４】ここで、室内機動作時の乱流騒音（広帯域
騒音）は、ファン回転数の７乗乃至８乗、ファン外径の
４乗に比例するため、騒音を増大することなく風量を増
大するためには、一般的に後者の方法が用いられる。Here, the turbulent noise (broadband noise) during the operation of the indoor unit is proportional to the seventh to eighth powers of the fan speed and the fourth power of the fan outer diameter, so that the air volume increases without increasing the noise. To do so, the latter method is generally used.
【０００５】しかしながら、室内機の奥行寸法は限られ
ており、室内ファンの外径を大きくすると室内ファン
と、この室内ファンの外周に取り付けられたノーズとの
間に形成される隙間が小さくなり、異音（離散周波数騒
音）が発生する。更に、熱交換器と貫流ファンとの距離
が小さくなるため、熱交換器内の配管、フィンのスリッ
トから発生する後流をファンの羽根が通過することによ
り羽根音（離散周波数騒音）が発生してしまうという問
題がある。However, the depth of the indoor unit is limited, and when the outer diameter of the indoor fan is increased, the gap formed between the indoor fan and the nose attached to the outer periphery of the indoor fan becomes smaller. Abnormal noise (discrete frequency noise) is generated. Furthermore, since the distance between the heat exchanger and the once-through fan is reduced, the blades of the fan pass through the wake generated from the pipes in the heat exchanger and the slits of the fins, thereby generating blade noise (discrete frequency noise). Problem.
【０００６】これらの羽根音を低減させる従来技術とし
て、特開平９−１００７９５号公報が知られている。特
に、特開平９−１００７９５号公報の図９には、（ａ）
〜（ｃ）の羽根の変形例が記載され、それぞれの変形例
の羽根の効果が述べられている。Japanese Patent Application Laid-Open No. Hei 9-100795 is known as a conventional technique for reducing these blade sounds. In particular, FIG. 9 of JP-A-9-100795 shows (a)
(C) describes the variations of the blade, and describes the effect of the blade in each variation.
【０００７】この従来技術は、ファンブロックの羽根前
縁を変化させることによって、羽根前縁とノーズとの位
置関係から発生する騒音を低減させたものである。具体
的には、羽根前縁を回転軸に対して傾斜させたものであ
る。回転軸に対して羽根前縁の一部に軸から羽根前縁ま
での外径が大きい部分が存在する。従って、羽根前縁に
外形が大きい部分から小さい部分に傾斜部分が形成され
るので、この傾斜部分がノーズを通過するときに位相差
（時間差）が生じるので、騒音発生スペクトルのピーク
が分散し、羽根音を防止しつつ、風量を増大できること
が記載されている。In this prior art, the noise generated from the positional relationship between the blade front edge and the nose is reduced by changing the blade front edge of the fan block. Specifically, the blade leading edge is inclined with respect to the rotation axis. A part of the leading edge of the blade with respect to the rotating shaft has a portion with a large outer diameter from the shaft to the leading edge of the blade. Therefore, since a slope portion is formed from a portion having a large outer shape to a portion having a small outer shape at the leading edge of the blade, a phase difference (time difference) occurs when the slope portion passes through the nose, so that the peak of the noise generation spectrum is dispersed, It is described that the air volume can be increased while preventing the blade sound.
【０００８】[0008]
【発明が解決しようとする課題】上記従来技術は、貫流
ファンと、吸い込み流路と吹出し流路を分離するノーズ
との間に形成される隙間を小さくすることによって風量
の増加が図れる。特に、上記特開平９−１００７９５号
公報の図９（ｃ）の形状であると、一つの羽根ブロック
に最大外径部分を頂点として二つの傾斜が形成されるの
で、一つの傾斜角度が大きくなり、特に跳ね音の防止効
果は大きい。In the above-mentioned prior art, the flow rate can be increased by reducing the gap formed between the once-through fan and the nose separating the suction passage and the discharge passage. In particular, in the case of the shape shown in FIG. 9C of Japanese Patent Application Laid-Open No. 9-100795, two inclinations are formed with the maximum outer diameter portion as the apex in one blade block, so that one inclination angle becomes large. In particular, the effect of preventing bouncing noise is great.
【０００９】しかしながら、上記従来技術では、特開平
９−１００７９５号公報の図３、図９に記載された形状
の羽根ブロックの成形手段については、何等記載がな
く、特に、図９に示されているように、羽根の両側に円
板が形成されていると、一方の円板が成形金型の引き抜
きを邪魔して引抜くことができない。換言すと図９
（ａ）乃至（ｃ）の形状は、円板が両側に付いている限
り成形することが出来ない。However, in the above prior art, there is no description about the means for forming the blade block having the shape shown in FIGS. 3 and 9 of JP-A-9-100795. As described above, if disks are formed on both sides of the blade, one of the disks hinders the drawing of the molding die and cannot be pulled out. In other words, FIG.
The shapes (a) to (c) cannot be formed as long as the disks are attached to both sides.
【００１０】本発明の目的は、羽根音の発生を抑制しつ
つ風量の増加を図ることができるファンを備えた空気調
和機を提供することにある。An object of the present invention is to provide an air conditioner provided with a fan capable of increasing the air volume while suppressing the generation of blade noise.
【００１１】[0011]
【課題を解決するための手段】上記目的は、円板と、こ
の円板の外周方向に複数枚取り付けられた羽根と、この
羽根に最大外径部分を設けたファンを備えた空気調和機
において、前記最大外径部分を境として、一方の羽根の
外径部分と他方の羽根の外系部分の曲率が異なる円弧を
描いたファンを備えたことにより達成される。SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner having a disk, a plurality of blades mounted on the disk in a circumferential direction, and a fan having a maximum outer diameter portion on the blade. This is attained by providing a fan that draws arcs having different curvatures in the outer diameter portion of one blade and the outer portion of the other blade from the maximum outer diameter portion.
【００１２】[0012]
【発明の実施の形態】本発明の一実施例を図１乃至図８
に基づいて詳細に説明する。図１は、ルームエアコン用
室内機の正面図であり、一部分を断面したものである。1 to 8 show an embodiment of the present invention.
It will be described in detail based on. FIG. 1 is a front view of an indoor unit for a room air conditioner, and is a partial cross-sectional view.
【００１３】８は、室内機の外形を形成する化粧枠であ
る。この化粧枠８の内部には、熱交換器４、モータ１５
等が収納されている。１４は、熱交換器４、モータ１５
の振動を抑える防振ゴムである。この防振ゴム１４の上
部には、モータ１５を動作させる電気品６や冷凍サイク
ル部品１６が配置されており、貫流ファンである羽根車
２及び空清フィルタ１２等の主構成部品が納められてい
る。羽根車２は羽根１と円板９から構成されており、室
内機を正面から見て下から上に向って回転する。化粧枠
８の前面吸い込み口１７に設けたグリル１１と上部グリ
ル３から空清フィルター１２を介して吸い込まれた空気
は、熱交換器４で熱交換される。その後、吸い込み流路
と吹出し流路を分離するノーズ１０、羽根車２を通過し
て縦風向板１３、横風向板５のある吹出し口７から吹き
出す。Reference numeral 8 denotes a decorative frame that forms the outer shape of the indoor unit. Inside the decorative frame 8, the heat exchanger 4, the motor 15
Etc. are stored. 14 is a heat exchanger 4, a motor 15
Anti-vibration rubber that suppresses vibration. An electric component 6 for operating the motor 15 and a refrigeration cycle component 16 are arranged on the upper part of the vibration isolating rubber 14, and main components such as the impeller 2, which is a cross-flow fan, and the air filter 12 are stored. . The impeller 2 is composed of the blade 1 and the disk 9, and rotates upward from below when the indoor unit is viewed from the front. The air sucked from the grill 11 and the upper grill 3 provided at the front suction port 17 of the decorative frame 8 via the air cleaning filter 12 is heat-exchanged by the heat exchanger 4. Thereafter, the air passes through the nose 10 that separates the suction flow path and the discharge flow path, the impeller 2, and blows out from the outlet 7 having the vertical wind direction plate 13 and the horizontal wind direction plate 5.
【００１４】羽根車２を構成する羽根1は、円板９の間
で外径が変化しており、円板９間で最大値を取る。この
ため、羽根車１０の外周で最大外径となる部分は、回転
軸に対して凸型となる。The outer diameter of the blades 1 constituting the impeller 2 varies between the disks 9 and takes the maximum value between the disks 9. For this reason, the portion having the maximum outer diameter on the outer periphery of the impeller 10 is convex with respect to the rotation axis.
【００１５】本発明を備えた羽根車の外観を図２に示
す。羽根車２はボス１９、端面円板１８、羽根１、円板
９、端面板２１、軸２０から構成されている。羽根１の
形状が円板９間において変化するため、外観上、ボス１
９がある端面円板１８から、外径は最大値まで徐々に増
加した後、次の円板９に向かって徐々に減少する。これ
が、軸２０がある端面板２１まで繰り返されて羽根車２
が構成される。FIG. 2 shows the appearance of an impeller provided with the present invention. The impeller 2 includes a boss 19, an end face disk 18, a blade 1, a disc 9, an end face plate 21, and a shaft 20. Since the shape of the blade 1 changes between the disks 9, the boss 1
The outer diameter gradually increases to a maximum value from the end face disk 18 at which there is 9, and then gradually decreases toward the next disk 9. This is repeated up to the end plate 21 where the shaft 20 is located, and the impeller 2
Is configured.
【００１６】図３（a）は羽根車２を構成する羽根ブロ
ックの一つを側面から見たものである。図３（ａ）は、
羽根１の最大径が円板９の径D1Sよりも大きいことが特
徴である。この図では、羽根１の外径（D2）の最大値と
なる部分は、最大値部分を中心として羽根１の両側方向
L1とL2が等しくなっている。L1とL2の和は、Lになって
いればよいので、最大外径（D2）部分は、必ずしも中心
部分にある必要はなく、ブロック間のどこにあっても良
い。FIG. 3A is a side view of one of the impeller blocks constituting the impeller 2. FIG. 3 (a)
It is characterized in that the maximum diameter of the blade 1 is larger than the diameter D 1S of the disk 9. In this figure, the portion where the outer diameter (D 2 ) of the blade 1 is the maximum value is in both sides of the blade 1 around the maximum value portion.
L 1 and L 2 are equal. The sum of L 1 and L 2, since it is sufficient that L, and the maximum outer diameter (D 2) moiety is not necessarily in the center portion, may be anywhere between blocks.
【００１７】図３（ｂ）と図３（c）は、外周部の羽根
形状が異なる。図３（ｂ）は、図３（ａ）のＡ−Ａ断面
図である。図３（ｃ）は、図３（ａ）のＢ−Ｂ断面図で
ある。まず、図３（ｂ）では、羽根１の外周側に円板９
の片と同じ円弧のエッジが形成されているのに対し、図
３（ｃ）の羽根１は外周において丸みを付けた翼型とし
たものである。これは、金型製作過程において形成され
るものであり、詳細は、後述する。FIGS. 3B and 3C differ in the shape of the blades at the outer periphery. FIG. 3B is a sectional view taken along line AA of FIG. FIG. 3C is a cross-sectional view taken along the line BB of FIG. First, in FIG. 3 (b), a disk 9
While the same arc edge as that of the above-mentioned piece is formed, the blade 1 in FIG. 3C has a blade shape with a rounded outer periphery. This is formed in a mold manufacturing process, and will be described later in detail.
【００１８】羽根１の外径は、円板９から最大値まで徐
々に増加した後、円板９がない方向にかけて徐々に減少
する。ファンが回転すると羽根１の最大外径部分が先に
ノーズ近傍を通過し、同一の羽根ではあるが、ノーズ又
は熱交換器内の配管等からの後流を横切る羽根の通過位
相を変えることができる。これにより、羽根音のピーク
を減らすことができる。また、羽根車２の外径を大きく
することにより、ノーズと羽根車２のギャップを詰める
ことができるため風量を増加させることができる。The outer diameter of the blade 1 gradually increases from the disk 9 to the maximum value, and then gradually decreases in a direction where the disk 9 is not provided. When the fan rotates, the maximum outer diameter portion of the blade 1 first passes near the nose, and although the same blade is used, it is possible to change the passage phase of the blade that crosses the wake of the nose or piping in the heat exchanger. it can. Thereby, the peak of the blade sound can be reduced. Further, by increasing the outer diameter of the impeller 2, the gap between the nose and the impeller 2 can be reduced, so that the air volume can be increased.
【００１９】図４に同一風量での従来の形態と本実施の
形態の比較を示す。横軸は従来のファン回転数を１とし
た場合の回転数比を、縦軸はそれぞれ従来ファンの風
量、入力、騒音を基準とした風量比、入力比、騒音値を
表す。従来の形態を○、本実施の形態を●で示す。同一
風量で比較すると、本実施の形態では回転数を2.4%、入
力を12%、騒音を１dB低減できる。FIG. 4 shows a comparison between the conventional embodiment and the present embodiment at the same air volume. The horizontal axis represents the rotation speed ratio when the conventional fan rotation speed is set to 1, and the vertical axis represents the air flow ratio, input ratio, and noise value based on the air flow, input, and noise of the conventional fan, respectively. The conventional mode is indicated by 、, and the present embodiment is indicated by ●. When compared at the same air volume, in the present embodiment, the number of revolutions can be reduced by 2.4%, the input can be reduced by 12%, and the noise can be reduced by 1 dB.
【００２０】図５に同一風量時における、騒音の周波数
特性を示す。横軸に周波数を、縦軸に従来ファンの音圧
レベルを基準とした相対の音圧レベルを表す。従来の形
態と本実施例の形態を比較すると、羽根枚数と回転数の
積に等しい周波数における騒音レベルが約−５dB低減し
ている。これらの結果、本発明の形態が不快と感じる羽
根音を低減できると共に静音・高風量化を実現し、省電
力化に繋がることがわかる。隣合うファンブロックはそ
の効果を最大限に生かすために、溶着又は接着時に位相
を変化させてもよい。FIG. 5 shows the frequency characteristics of noise at the same airflow. The horizontal axis represents the frequency, and the vertical axis represents the relative sound pressure level based on the sound pressure level of the conventional fan. When the conventional embodiment and the embodiment are compared, the noise level at a frequency equal to the product of the number of blades and the number of rotations is reduced by about -5 dB. As a result, it can be understood that the embodiment of the present invention can reduce the unpleasant blade sound, realize a silent and high air flow, and lead to power saving. Adjacent fan blocks may have their phases changed during welding or bonding in order to maximize their effects.
【００２１】図６に本発明を備えた羽根ブロックの製造
するための金型の断面図を示す。２２は、雄型。２３
は、雌型である。雄型と雌型の２つの金型は、羽根の最
大外径を境として軸方向に分離されるようになってい
る。すなわち、雄型２２は円板のないファンブロックの
他端から、ファン外径が最大となる羽根までと、羽根の
内径側において、ファン外径の最大径から円板側に向か
う羽根の形状が成形され、円板の羽根側面までを形成す
る。金型２３は、羽根の最大径から円板に向かう羽根の
外周を形成する雌型である。それぞれの金型には、羽根
ブロックを成形後、金型を離脱させるために各部分に
は、必要な抜き勾配を設けてある。図６では、羽根１の
最大外径を境として左右方向に抜き勾配を設けている
が、羽根の厚み方向にも最大外径を境として抜き勾配が
設けられている。本金型により成形されたファンブロッ
クの断面形状は、図３に示した形状となる。FIG. 6 is a sectional view of a mold for manufacturing a blade block provided with the present invention. 22 is a male type. 23
Is a female type. The two dies, the male die and the female die, are axially separated from each other by the maximum outer diameter of the blade. That is, the male mold 22 has the shape of the blade from the maximum diameter of the fan outer diameter toward the disk side on the inner diameter side of the blade from the other end of the fan block without the disk to the blade with the maximum fan outer diameter. It is molded and forms up to the blade side of the disk. The mold 23 is a female mold that forms the outer periphery of the blade from the maximum diameter of the blade toward the disk. Each mold is provided with a required draft angle in order to release the mold after the blade block is formed. In FIG. 6, a draft is provided in the left-right direction at the boundary of the maximum outer diameter of the blade 1, but a draft is also provided at the boundary of the maximum outer diameter in the thickness direction of the blade. The cross-sectional shape of the fan block formed by this mold is as shown in FIG.
【００２２】金型２２と金型２３の組合せにより形成さ
れる空隙部にファン材料の樹脂材を流し込むことで、複
数の羽根１と一つの円板９を同時に製作することができ
る。成形されたファンブロックを軸方向に積み重ね、羽
根の先端と円板を溶着、又は接着剤による接着で羽根車
２が形成される。A plurality of blades 1 and one disk 9 can be manufactured at the same time by pouring a resin material of a fan material into a gap formed by a combination of the mold 22 and the mold 23. The formed fan blocks are stacked in the axial direction, and the impeller 2 is formed by welding the tip of the blade to a disk or bonding with an adhesive.
【００２３】特開平０９−１００７９５号公報の図３に
示したように、従来の羽根の最大外径は、円板側に一ヶ
所であるため、羽根外周端の傾斜角度は緩やかであっ
た。これに対し、本発明の羽根の傾斜角度が大きいの
で、仮に、本発明の傾斜角度を従来の傾斜角度と同じ角
度とするならば、ファンブロック１個あたりの羽根の長
さを長くできるので、従来と同じ長さの羽根２を形成す
るのに本発明では４個のファンブロックで形成できる。
従って、溶着ヶ所が削減できる効果がある。As shown in FIG. 3 of JP-A-09-100795, the maximum outer diameter of the conventional blade is one at the disk side, so that the inclination angle of the outer peripheral end of the blade is gentle. On the other hand, since the inclination angle of the blade of the present invention is large, if the inclination angle of the present invention is the same as the conventional inclination angle, the length of the blade per one fan block can be increased. In the present invention, the blades 2 having the same length as the conventional one can be formed by four fan blocks.
Therefore, there is an effect that welding spots can be reduced.
【００２４】本発明の他の実施例を図７に示す。ファン
ブロックを形成する羽根の外周側に変曲点を３つ設け、
中央部の変曲点を最大径としたものである。この変曲点
の数に制限は無く、図３に比べ羽根１の外径をより大き
く取ることができるため、更に高風量化を行うことがで
きる。FIG. 7 shows another embodiment of the present invention. Three inflection points are provided on the outer peripheral side of the blade forming the fan block,
The inflection point at the center is the maximum diameter. There is no limit to the number of inflection points, and the outer diameter of the blade 1 can be made larger than that in FIG. 3, so that the air volume can be further increased.
【００２５】本発明の他の実施例を図８に示す。図７と
異なり、羽根１の外周を円弧状とすることで羽根１の外
径を図３より大きく取ることができる。更に外周部に鋭
い変曲点が無いため、高風量化を図ることが可能であ
る。FIG. 8 shows another embodiment of the present invention. Unlike FIG. 7, by making the outer periphery of the blade 1 arc-shaped, the outer diameter of the blade 1 can be made larger than that in FIG. Further, since there is no sharp inflection point on the outer peripheral portion, it is possible to increase the air volume.
【００２６】[0026]
【発明の効果】本発明によれば、羽根音の発生を防止し
つつ、高風量・高効率な貫流ファンを備えた空気調和機
を提供することができる。According to the present invention, it is possible to provide an air conditioner equipped with a high flow rate and high efficiency cross-flow fan while preventing generation of blade noise.
【図１】本発明の一実施の形態を示す正面縦断面図であ
る。FIG. 1 is a front longitudinal sectional view showing an embodiment of the present invention.
【図２】上記実施の形態の羽根車概観図である。FIG. 2 is an outline view of an impeller of the embodiment.
【図３】上記実施の形態の羽根車部分の正面図と縦断面
図である。FIG. 3 is a front view and a longitudinal sectional view of an impeller portion of the embodiment.
【図４】上記実施の形態の効果を示す図である。FIG. 4 is a diagram showing an effect of the embodiment.
【図５】上記実施の形態の効果を示す図である。FIG. 5 is a diagram illustrating an effect of the embodiment.
【図６】上記実施の形態を製作するための金型断面図で
ある。FIG. 6 is a sectional view of a mold for manufacturing the above embodiment.
【図７】本発明の他の実施形態の羽根車部分の正面断面
図と縦断面図である。FIG. 7 is a front sectional view and a longitudinal sectional view of an impeller portion according to another embodiment of the present invention.
【図８】本発明の他の実施形態の羽根車部分の正面断面
図と縦断面図である。FIG. 8 is a front sectional view and a longitudinal sectional view of an impeller portion according to another embodiment of the present invention.
１・・・羽根、２・・・羽根車、３・・・上面グリル、４・・・熱交
換器、５・・・横風向板、６・・・電気品、７・・・吹出し口、
８・・・化粧枠、９・・・円板または円管、１０・・・ノーズ、
１１・・・グリル、１２・・・空清フィルタ、１３・・・縦風向
板、１４・・・防振ゴム、１５・・・モータ、１６・・・サイク
ル部品、１７・・・前面吸い込み口１８・・・端面円板、１９
・・・ボス、２０・・・軸、２１・・・端面板、２２・・・金型（雄
型）、２３・・・金型（雌型）。DESCRIPTION OF SYMBOLS 1 ... impeller, 2 ... impeller, 3 ... upper surface grill, 4 ... heat exchanger, 5 ... horizontal wind direction board, 6 ... electric goods, 7 ... outlet
8: decorative frame, 9: disk or tube, 10: nose,
11: Grill, 12: Air filter, 13: Vertical windshield, 14: Anti-vibration rubber, 15: Motor, 16: Cycle parts, 17: Front suction port 18 ... End face disk, 19
... boss, 20 ... shaft, 21 ... end plate, 22 ... mold (male), 23 ... mold (female).
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森本 素生 栃木県下都賀郡大平町大字富田800番地 株式会社日立製作所冷熱事業部内 (72)発明者 松原 栄介 栃木県下都賀郡大平町大字富田800番地 株式会社日立製作所冷熱事業部内 (72)発明者 宮崎 則夫 栃木県下都賀郡大平町富田709番地の２ 株式会社日立栃木エレクトロニクス内 Ｆターム(参考） 3H031 AA00 AA03 BA01 BA02 BA08 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor, Motoo Morimoto 800, Tomita, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture Inside the Cooling & Cooling Business Dept., Hitachi, Ltd. (72) Inventor Norio Miyazaki 709 Tomita, Ohira-cho, Shimotsuga-gun, Tochigi F-term in Hitachi Tochigi Electronics Co., Ltd. (reference) 3H031 AA00 AA03 BA01 BA02 BA08
Claims (1)
付けられた羽根と、この羽根に最大外径部分を設けたフ
ァンを備えた空気調和機において、前記最大外径部分を
境として、一方の羽根の外径部分と他方の羽根の外系部
分の曲率が異なる円弧を描いたファンを備えた空気調和
機。1. An air conditioner comprising a disk, a plurality of blades mounted on an outer peripheral direction of the disk, and a fan having a maximum outer diameter portion on the blade. An air conditioner provided with a fan that draws arcs having different curvatures in the outer diameter part of one blade and the outer part of the other blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21957699A JP3777891B2 (en) | 1999-08-03 | 1999-08-03 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21957699A JP3777891B2 (en) | 1999-08-03 | 1999-08-03 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001050189A true JP2001050189A (en) | 2001-02-23 |
| JP3777891B2 JP3777891B2 (en) | 2006-05-24 |
Family
ID=16737699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21957699A Expired - Fee Related JP3777891B2 (en) | 1999-08-03 | 1999-08-03 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3777891B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004100663A (en) * | 2002-09-13 | 2004-04-02 | Hitachi Home & Life Solutions Inc | Air conditioner |
| JP2007255426A (en) * | 2007-05-14 | 2007-10-04 | Hitachi Appliances Inc | Air conditioner |
| CN102686887A (en) * | 2009-09-28 | 2012-09-19 | 三菱电机株式会社 | Through-flow fan, air blower, and air conditioner |
| US8814522B2 (en) | 2007-06-15 | 2014-08-26 | Cymer, Llc | Cross-flow fan impeller for a transversley excited, pulsed, gas discharge laser |
| US9453512B2 (en) | 2011-03-11 | 2016-09-27 | Mitsubishi Electric Corporation | Cross flow fan, air-sending device, and air-conditioning apparatus |
-
1999
- 1999-08-03 JP JP21957699A patent/JP3777891B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004100663A (en) * | 2002-09-13 | 2004-04-02 | Hitachi Home & Life Solutions Inc | Air conditioner |
| JP2007255426A (en) * | 2007-05-14 | 2007-10-04 | Hitachi Appliances Inc | Air conditioner |
| US8814522B2 (en) | 2007-06-15 | 2014-08-26 | Cymer, Llc | Cross-flow fan impeller for a transversley excited, pulsed, gas discharge laser |
| CN102686887A (en) * | 2009-09-28 | 2012-09-19 | 三菱电机株式会社 | Through-flow fan, air blower, and air conditioner |
| EP2472118A4 (en) * | 2009-09-28 | 2017-07-05 | Mitsubishi Electric Corporation | Through-flow fan, air blower, and air conditioner |
| US9453512B2 (en) | 2011-03-11 | 2016-09-27 | Mitsubishi Electric Corporation | Cross flow fan, air-sending device, and air-conditioning apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3777891B2 (en) | 2006-05-24 |
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