JPH07305699A - Centrifugal blower - Google Patents
Centrifugal blowerInfo
- Publication number
- JPH07305699A JPH07305699A JP9617194A JP9617194A JPH07305699A JP H07305699 A JPH07305699 A JP H07305699A JP 9617194 A JP9617194 A JP 9617194A JP 9617194 A JP9617194 A JP 9617194A JP H07305699 A JPH07305699 A JP H07305699A
- Authority
- JP
- Japan
- Prior art keywords
- main plate
- blade
- impeller
- plate
- protrusion
- 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
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、空気調和機などに用い
られる低騒音化を図った遠心送風機に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal blower which is used in an air conditioner or the like and has reduced noise.
【０００２】[0002]
【従来の技術】近年、空気調和機などに用いられる遠心
送風機は特に高性能化・低騒音化に対する要請が非常に
強くなっており、羽根車形状の改善による性能改善方法
が提案されており、遠心送風機の主板を傾斜させてファ
ン内部の流れを改善することがあった。2. Description of the Related Art In recent years, there has been an extremely strong demand for high performance and low noise in centrifugal blowers used for air conditioners and the like, and a method for improving performance by improving the shape of an impeller has been proposed. In some cases, the flow inside the fan was improved by tilting the main plate of the centrifugal blower.
【０００３】以下、図面を参照しながら、実開昭６３−
２４８２２３号公報などで提案されている従来の遠心送
風機について説明する。Hereinafter, with reference to the drawings, the actual construction 63-
A conventional centrifugal blower proposed in Japanese Patent No. 248223 will be described.
【０００４】図５は従来の遠心式送風機の羽根車の構成
を示すものである。１は羽根車であり、ＡＢＳ樹脂で一
体に成形した主板２と複数の羽根板３と、羽根板３の上
端部に高周波溶着した側板４とで構成している。５は側
板４に設けた吸込口である。FIG. 5 shows the structure of an impeller of a conventional centrifugal blower. An impeller 1 is composed of a main plate 2 integrally formed of ABS resin, a plurality of vanes 3 and a side plate 4 welded to the upper end of the vanes 3 at a high frequency. Reference numeral 5 is a suction port provided in the side plate 4.
【０００５】ここで、主板２は羽根板３との取付部２ａ
に傾斜をもたせてある。５は主板２に取り付けたモ−タ
であり、６はモ−タ５を取り付けた遠心送風機本体のケ
−シングである。７はケ−シング６に取り付けた吸い込
みリングである。Here, the main plate 2 is attached to the vane plate 3 at a mounting portion 2a.
It has a slope. Reference numeral 5 is a motor attached to the main plate 2, and 6 is a casing of the centrifugal blower main body to which the motor 5 is attached. Reference numeral 7 is a suction ring attached to the casing 6.
【０００６】以上のように構成された遠心送風機につい
て、以下その動作について説明する。まず、モ−タ５の
回転とともに羽根車１が回転すると吸い込みリング７を
介して空気が羽根車１内に流入し、動圧と静圧を付加さ
れ羽根車１外に吐出され送風作用を為す。この時、主板
２は羽根板３との取付部分が傾斜しているため、羽根板
３に気流が到達するときに気流の角度変化が緩やかに変
化するため、流れの剥離を抑え、空力性能が向上し乱流
騒音の発生も抑制される。The operation of the centrifugal blower configured as described above will be described below. First, when the impeller 1 rotates together with the rotation of the motor 5, air flows into the impeller 1 through the suction ring 7, and a dynamic pressure and a static pressure are applied to the air, which is then discharged to the outside of the impeller 1 to perform a blowing action. . At this time, since the mounting portion of the main plate 2 with the vane plate 3 is inclined, the angle change of the airflow changes gently when the airflow reaches the vane plate 3, so that flow separation is suppressed and aerodynamic performance is improved. It also improves and suppresses the generation of turbulent noise.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら上記のよ
うな構成では、羽根板３と側板４を高周波溶着するさい
に、図６で示すように主板２と羽根板３の取付部分２ａ
に傾斜部分があるため、主板２に接触させた高周波加振
器８からの加振力Ｖが傾斜部分２ａから垂直方向に伝達
するため羽根上端部の前縁側３ａでは溶着が行われず、
主板２の水平部２ｂから垂直方向に伝達した部分の羽根
板後縁部３ｂのみが溶着するだけのため、羽根板３と側
板４の高周波溶着強度が弱く、羽根車の回転中に破壊を
起こすことがあるという問題点があった。However, in the above-mentioned structure, when the blade plate 3 and the side plate 4 are high-frequency welded, as shown in FIG. 6, the mounting portion 2a of the main plate 2 and the blade plate 3 is attached.
Since there is an inclined portion, the exciting force V from the high-frequency exciter 8 in contact with the main plate 2 is transmitted from the inclined portion 2a in the vertical direction, so that welding is not performed on the leading edge side 3a of the blade upper end portion.
Since only the trailing edge portion 3b of the blade plate, which is transmitted from the horizontal portion 2b of the main plate 2 in the vertical direction, is welded, the high frequency welding strength of the blade plate 3 and the side plate 4 is weak, and the blade plate is broken during rotation. There was a problem that there were things.
【０００８】本発明は主板に傾斜部分を設け送風性能を
向上さて乱流騒音を低減させ、かつ送風機の回転強度を
向上させることを目的とする。An object of the present invention is to provide an inclined portion on the main plate to improve the blowing performance, reduce turbulent noise, and improve the rotational strength of the blower.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に本発明の遠心送風機は、樹脂材などで主板と複数の羽
根とを一体に形成し、前記羽根の前記主板との取付部に
は主板底面に対して傾斜を有し、かつ前記主板の羽根を
有する面の反対面の前記傾斜部分に、羽根前縁の延長線
に相当する位置に突起部を設け、かつ前記突起部の底面
を前記主板の底面に並行に形成し、前記羽根の上端部に
は樹脂材などで形成したリング状の側板を溶着させて形
成した羽根車を有する構成を備えるものである。In order to solve the above problems, a centrifugal blower of the present invention has a main plate and a plurality of blades integrally formed of a resin material or the like, and a mounting portion of the blade with the main plate is formed. A protrusion is provided at a position corresponding to an extension line of the blade leading edge on the inclined portion of the surface opposite to the blade-bearing surface of the main plate, and the bottom surface of the protrusion is The blade is provided in parallel with the bottom surface of the main plate, and has an impeller formed by welding a ring-shaped side plate made of a resin material or the like to the upper ends of the blades.
【００１０】また他の遠心送風機は、主板上にモ−タを
収納する凹部を有し、前記凹部に複数の穴を設け、かつ
前記主板の羽根を有する面の反対面の前記傾斜部分に、
羽根と略同形状に延長させた突起部を形成し前記突起の
底面を主板底面と並行に形成した構成を備えるものであ
る。Another centrifugal blower has a recess for accommodating a motor on the main plate, a plurality of holes are provided in the recess, and the inclined portion opposite to the surface of the main plate having the blade is provided.
It is provided with a structure in which a protrusion extending in substantially the same shape as the blade is formed and the bottom surface of the protrusion is formed parallel to the bottom surface of the main plate.
【００１１】[0011]
【作用】本発明では、主板の羽根を有する面の反対面の
前記傾斜部分に、羽根前縁の延長線に相当する位置に突
起部を設け、かつ前記突起部の底面を前記主板の底面に
並行に形成することにより、羽根板と側板を高周波溶着
させるさいに、主板の突起部と主板の平面部に高周波加
振器が平行に接触することになり、羽根には前縁部と後
縁部の両端から加振力が伝達し、羽根の両端部すなわち
振動の腹となる部分に伝達するため、効率良く振動が上
部に伝達され、羽根と側板とが強固に溶着される。突起
部は振動の腹に位置するため、大きな面積をとること無
く振動を有効に伝達する。According to the present invention, a protrusion is provided at a position corresponding to the extension line of the blade leading edge on the inclined portion of the surface opposite to the blade of the main plate, and the bottom surface of the protrusion is the bottom surface of the main plate. By forming them in parallel, when the blade plate and the side plate are welded by high frequency, the high frequency exciter comes into parallel contact with the protrusion of the main plate and the flat part of the main plate, and the blade has front and rear edges. Exciting force is transmitted from both ends of the portion and is transmitted to both end portions of the blade, that is, a portion serving as an antinode of vibration, so that the vibration is efficiently transmitted to the upper portion, and the blade and the side plate are firmly welded. Since the protrusion is located on the antinode of the vibration, the vibration is effectively transmitted without taking a large area.
【００１２】また、他の発明では前記傾斜部分に、羽根
と略同形状に延長させた突起部を形成し前記突起の底面
を主板底面と並行に形成したため、高周波加振器からの
振動が羽根の全断面に均等に伝達されるため、上端部で
は側板と強固に溶着される。また、主板の裏面側に遠心
羽根車が形成されることになり、送風作用が生じ、主板
に設けた複数の穴から吸い込まれた空気がモ−タを冷却
するとともに、遠心送風機の送風性能を向上させる。In another aspect of the present invention, the inclined portion is formed with a protrusion extending in substantially the same shape as the blade, and the bottom surface of the protrusion is formed in parallel with the bottom surface of the main plate. Since it is evenly transmitted to all the cross sections, the upper end is firmly welded to the side plate. In addition, a centrifugal impeller is formed on the back surface side of the main plate, a blowing action occurs, the air sucked from the plurality of holes provided in the main plate cools the motor, and the blowing performance of the centrifugal blower is improved. Improve.
【００１３】[0013]
【実施例】以下、本発明による第１の実施例の遠心送風
機について、図１，２を参照しながら説明する。尚、従
来例と同一部分については重複を避けるため、同一の符
号を付けて説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A centrifugal fan according to a first embodiment of the present invention will be described below with reference to FIGS. In order to avoid duplication, the same parts as those of the conventional example are denoted by the same reference numerals and the description thereof will be omitted.
【００１４】１は羽根車であり、ＡＢＳなどの樹脂材で
主板２と複数の羽根３とを一体に形成してある。羽根３
の主板２との取付部には主板底面に対して傾斜部２ａを
有し、かつ主板２の羽根３を有する面の反対面の傾斜部
分２ａに、羽根３の前縁の延長線に相当する位置に突起
部９を設けている。An impeller 1 has a main plate 2 and a plurality of blades 3 integrally formed of a resin material such as ABS. Feather 3
Has an inclined portion 2a with respect to the bottom surface of the main plate, and corresponds to an extension line of the front edge of the blade 3 on the inclined portion 2a opposite to the surface of the main plate 2 having the blades 3. Protrusions 9 are provided at the positions.
【００１５】また、突起部９の底面は主板２の底面に並
行に形成してある。また、羽根３の上端部にはＡＢＳな
どの樹脂材などで形成したリング状の側板４を溶着させ
て羽根車１を形成している。The bottom surface of the protrusion 9 is formed parallel to the bottom surface of the main plate 2. Further, a ring-shaped side plate 4 made of a resin material such as ABS is welded to the upper end portion of the blade 3 to form the impeller 1.
【００１６】以上のように構成された遠心送風機につい
て、以下その動作について説明する。まず、モ−タ５の
回転とともに羽根車１が回転するとオリフィス７を介し
て空気が羽根車１内に流入し、動圧と静圧を付加され羽
根車１外に吐出され送風作用を為す。The operation of the centrifugal blower configured as described above will be described below. First, when the impeller 1 rotates together with the rotation of the motor 5, air flows into the impeller 1 through the orifice 7, and a dynamic pressure and a static pressure are added to the air, which is then discharged to the outside of the impeller 1 to perform a blowing action.
【００１７】このとき、主板２の羽根３を有する面の反
対面の傾斜部分２ａに、羽根前縁の延長線に相当する位
置にある突起部９は主板２の底面に並行に形成されてい
るため、羽根板３と側板４を高周波溶着させるさいに、
主板２の突起部９と主板２の平面部２ｂに高周波加振器
が平行に接触することになり、羽根３には前縁部と後縁
部の両端から加振力が伝達する。このとき、羽根３の両
端部は開放端であるため振動の腹となる。At this time, on the inclined portion 2a of the surface opposite to the surface having the blades 3 of the main plate 2, the projection 9 located at the position corresponding to the extension line of the blade front edge is formed in parallel with the bottom surface of the main plate 2. Therefore, when welding the blade plate 3 and the side plate 4 by high frequency welding,
The high-frequency exciter comes into parallel contact with the projection 9 of the main plate 2 and the flat portion 2b of the main plate 2, and the excitation force is transmitted to the blade 3 from both ends of the front edge portion and the rear edge portion. At this time, since both ends of the blade 3 are open ends, they are antinodes of vibration.
【００１８】従って、羽根３は自励的に振動し振動レベ
ルが高まるため、効率良く振動が羽根３上部に伝達さ
れ、羽根３と側板４とが強固に溶着される。Therefore, the blade 3 vibrates in a self-excited manner and the vibration level increases, so that the vibration is efficiently transmitted to the upper portion of the blade 3 and the blade 3 and the side plate 4 are firmly welded.
【００１９】しかも、突起部９は振動の腹に位置させた
ため、大きな面積をとること無く振動を有効に伝達する
ことができるばかりでなく、面積が小さいため、羽根車
１の重量を最小限の増加に抑えかつ、主板２の裏面側の
流れを乱すことがない。Moreover, since the projection 9 is located at the antinode of the vibration, not only can the vibration be effectively transmitted without taking a large area, but the area is small, so that the weight of the impeller 1 is minimized. The increase is suppressed and the flow on the back surface side of the main plate 2 is not disturbed.
【００２０】以上のように本実施例の遠心式送風機は、
羽根３の主板２との取付部には主板底面に対して傾斜部
２ａを有し、かつ主板２の羽根３を有する面の反対面の
傾斜部分２ａに、羽根３の前縁の延長線に相当する位置
に突起部９を設け、突起部９の底面は主板２の底面に並
行に形成し、羽根３の上端部にはＡＢＳなどの樹脂材な
どで形成したリング状の側板４を溶着させて羽根車１を
形成することにより、羽根３と側板４とを強固に溶着
し、送風機内部の流れの改善効果を損ねることなく、羽
根車の回転時の破壊を防止することができる。As described above, the centrifugal blower of this embodiment is
The mounting portion of the blade 3 with the main plate 2 has an inclined portion 2a with respect to the bottom surface of the main plate, and the inclined portion 2a opposite to the surface of the main plate 2 on which the blade 3 is provided is provided as an extension line of the front edge of the blade 3. Protrusions 9 are provided at corresponding positions, the bottoms of the protrusions 9 are formed parallel to the bottom of the main plate 2, and the ring-shaped side plates 4 made of a resin material such as ABS are welded to the upper ends of the blades 3. By forming the impeller 1 with the blades, the blades 3 and the side plates 4 are firmly welded to each other, and the impeller during rotation can be prevented from being damaged without impairing the effect of improving the flow inside the blower.
【００２１】しかも、突起部９は振動の腹に位置させた
ため、大きな面積をとること無く振動を有効に伝達する
ことができるばかりでなく、面積が小さいため、羽根車
１の重量を最小限の増加に抑えかつ、主板２の裏面側の
流れを乱すことがない実用効果大なるものである。Moreover, since the projection 9 is located at the antinode of the vibration, not only the vibration can be effectively transmitted without taking a large area, but also the area is small, so that the weight of the impeller 1 is minimized. This is a practical effect that suppresses the increase and does not disturb the flow on the back surface side of the main plate 2.
【００２２】つぎに、本発明の第２の実施例による遠心
送風機について、図３，４を参照しながら説明する。
尚、従来例と同一部分については重複を避けるため、同
一の符号を付けて説明を省略する。Next, a centrifugal blower according to a second embodiment of the present invention will be described with reference to FIGS.
In order to avoid duplication, the same parts as those of the conventional example will be denoted by the same reference numerals and the description thereof will be omitted.
【００２３】１０は主板２上に設けたモ−タ５を収納す
る凹部であり、凹部１０にはさらにに複数の穴１１がも
うけてある。主板２の羽根３を有する面の反対面の傾斜
部分２ａには、羽根３と略同形状に延長させた突起部１
２を形成してある。さらに、突起部１２の底面は主板２
底面と並行に形成してあり、近接してケ−シング６上に
ケ−シング６と突起部１２とを仕切るリング状の仕切板
１３を設けている。Reference numeral 10 is a concave portion for accommodating the motor 5 provided on the main plate 2, and the concave portion 10 is further provided with a plurality of holes 11. On the inclined portion 2a of the main plate 2 opposite to the surface having the blades 3, the protrusions 1 extended to have substantially the same shape as the blades 3 are formed.
2 is formed. Further, the bottom surface of the protrusion 12 is the main plate 2
A ring-shaped partition plate 13 for partitioning the casing 6 and the protrusion 12 is provided on the casing 6 in close proximity to the bottom face.
【００２４】以上のように構成された遠心送風機につい
て、以下その動作について説明する。まず、モ−タ５の
回転とともに羽根車１が回転するとオリフィス７を介し
て空気が羽根車１内に流入し、動圧と静圧を付加され羽
根車１外に吐出され送風作用を為す。このとき主板２傾
斜部分２ａに、羽根３と略同形状に延長させた突起部１
２を形成し底面を主板２底面と並行に形成したため、高
周波加振器からの振動が羽根３の全断面に均等に伝達さ
れるため、羽根３の上端部では側板４と強固に溶着され
るのは第１の実施例とほぼ同様である。The operation of the centrifugal blower configured as above will be described below. First, when the impeller 1 rotates together with the rotation of the motor 5, air flows into the impeller 1 through the orifice 7, and a dynamic pressure and a static pressure are added to the air, which is then discharged to the outside of the impeller 1 to perform a blowing action. At this time, the main plate 2 is inclined to the inclined portion 2a, and the protrusion 1 is extended to have substantially the same shape as the blade 3.
2 is formed and the bottom surface is formed in parallel with the bottom surface of the main plate 2, the vibration from the high-frequency exciter is evenly transmitted to the entire cross section of the blade 3, so that the upper edge of the blade 3 is firmly welded to the side plate 4. Is almost the same as in the first embodiment.
【００２５】さらに、主板２の裏面側に設けた突起部は
羽根３と略同形状に延長させて形成してあるため、主板
２の裏面に遠心羽根車の一部が形成されることになり、
羽根車１の回転とともに送風作用が生じる。羽根車１が
回転すると主板２の凸部１０に設けた複数の穴１１から
主板の裏面側に気流が吸い込まれ突起部１２の作用で動
圧と静圧を付加されて羽根車１外に放出されて送風作用
を為す。Further, since the protrusion provided on the back surface side of the main plate 2 is formed to extend in substantially the same shape as the blade 3, a part of the centrifugal impeller is formed on the back surface of the main plate 2. ,
A blowing action occurs as the impeller 1 rotates. When the impeller 1 rotates, the air flow is sucked into the back surface side of the main plate from a plurality of holes 11 provided in the convex portion 10 of the main plate 2 and the dynamic pressure and static pressure are added by the action of the protrusions 12 and discharged to the outside of the impeller 1. Being blown off, it works.
【００２６】このとき、穴１１より吸い込まれた気流は
一旦モ−タ５に接触するため、モ−タ５を冷却する。ま
た、羽根車１外に放出された気流は他の気流に加算され
ることになるため、羽根車１の送風量が増加する。At this time, the air flow sucked from the hole 11 once contacts the motor 5, so that the motor 5 is cooled. Further, since the airflow discharged to the outside of the impeller 1 is added to other airflows, the amount of air blown by the impeller 1 increases.
【００２７】以上のように、本実施例の遠心送風機は、
主板２上に設けたモ−タ５を収納する凹部と、凹部１０
に複数の穴１１をもうけ、主板２の羽根３を有する面の
反対面の傾斜部分２ａには、羽根３と略同形状に延長さ
せた突起部１２を形成し、さらに、突起部１２の底面は
主板２底面と並行に形成してあり、近接してケ−シング
６上にケ−シング６と突起部１２とを仕切るリング状の
仕切板１３を設けたため、高周波加振器からの振動が羽
根３の全断面に均等に伝達されるため、羽根３の上端部
では側板４と強固に溶着され、羽根車の回転時の破壊を
防止することができる。As described above, the centrifugal blower of this embodiment is
A recess for accommodating the motor 5 provided on the main plate 2, and a recess 10
A plurality of holes 11 are formed in the main plate 2, and a protrusion 12 extending in substantially the same shape as the blade 3 is formed on the inclined portion 2a opposite to the surface having the blade 3 of the main plate 2, and the bottom surface of the protrusion 12 is further formed. Is formed in parallel with the bottom surface of the main plate 2, and a ring-shaped partition plate 13 for partitioning the casing 6 and the protrusion 12 is provided in close proximity to the casing 6, so that the vibration from the high-frequency exciter is Since it is evenly transmitted to the entire cross section of the blade 3, it is firmly welded to the side plate 4 at the upper end portion of the blade 3, and it is possible to prevent the impeller from being broken during rotation.
【００２８】しかも、主板２の裏面に遠心羽根車の一部
が形成されることになり、羽根車１の回転とともに送風
作用が生じる。羽根車１が回転するとモ−タ５を冷却
し、モ−タの過熱をによる損傷を防止しまた、羽根車１
外に放出された気流は他の気流に加算されることになる
ため、羽根車１の送風量が増加する。Moreover, a part of the centrifugal impeller is formed on the back surface of the main plate 2, so that the blower action is generated as the impeller 1 rotates. When the impeller 1 rotates, it cools the motor 5 and prevents damage due to overheating of the motor.
Since the airflow emitted to the outside is added to the other airflows, the air flow rate of the impeller 1 increases.
【００２９】[0029]
【発明の効果】以上説明したように本発明は、樹脂材な
どで主板と複数の羽根とを一体に形成し、前記羽根の前
記主板との取付部には主板底面に対して傾斜を有し、か
つ前記主板の羽根を有する面の反対面の前記傾斜部分
に、羽根前縁の延長線に相当する位置に突起部を設け、
かつ前記突起部の底面を前記主板の底面に並行に形成
し、前記羽根の上端部には樹脂材などで形成したリング
状の側板を溶着させて形成しすることにより、羽根と側
板とを強固に溶着し、送風機内部の流れの改善効果を損
ねることなく、羽根車の回転時の破壊を防止することが
できる。As described above, according to the present invention, a main plate and a plurality of blades are integrally formed of a resin material, and the mounting portion of the blades with the main plate is inclined with respect to the bottom surface of the main plate. A protrusion is provided at a position corresponding to an extension line of the blade leading edge on the inclined portion of the surface opposite to the blade-containing surface of the main plate,
In addition, the bottom surface of the protrusion is formed in parallel with the bottom surface of the main plate, and the upper end portion of the blade is formed by welding a ring-shaped side plate formed of a resin material or the like to firmly form the blade and the side plate. It is possible to prevent the impeller from being broken during rotation without spoiling the effect of improving the flow inside the blower.
【００３０】しかも、羽根車の重量を最小限の増加に抑
えかつ、主板の裏面側の流れを乱すことがない。Moreover, the weight of the impeller is suppressed to a minimum increase, and the flow on the back side of the main plate is not disturbed.
【００３１】また主板上にモ−タを収納する凹部を有
し、前記凹部に複数の穴を設け、かつ前記主板の羽根を
有する面の反対面の前記傾斜部分に、羽根と略同形状に
延長させた突起部を形成し前記突起の底面を主板底面と
並行に形成した構成により、羽根と側板とを強固に溶着
し、羽根車の回転時の破壊を防止することができる。Further, there is a recess for accommodating the motor on the main plate, a plurality of holes are provided in the recess, and the inclined portion on the opposite side of the surface of the main plate having the blade has substantially the same shape as the blade. With the configuration in which the extended protrusion is formed and the bottom surface of the protrusion is formed in parallel with the bottom surface of the main plate, the blade and the side plate can be firmly welded to each other, and the damage during rotation of the impeller can be prevented.
【００３２】しかも、主板の裏面に遠心羽根車の一部が
形成されることになり、モ−タを冷却し、モ−タの過熱
をによる損傷を防止し、かつ送風量Ｗが増加させること
ができる。Moreover, a part of the centrifugal impeller is formed on the back surface of the main plate, the motor is cooled, damage due to overheating of the motor is prevented, and the air flow W is increased. You can
【図１】本発明の第１の実施例の遠心送風機の断面図FIG. 1 is a sectional view of a centrifugal fan according to a first embodiment of the present invention.
【図２】同実施例の遠心送風機の羽根車のＡ−Ａ断面図FIG. 2 is a cross-sectional view taken along the line AA of the impeller of the centrifugal blower of the same embodiment.
【図３】本発明の第２の実施例の遠心送風機の断面図FIG. 3 is a sectional view of a centrifugal fan according to a second embodiment of the present invention.
【図４】同実施例の遠心式送風気の羽根車のＢ−Ｂ断面
図FIG. 4 is a cross-sectional view of the centrifugal blast air impeller of the same embodiment taken along the line BB.
【図５】従来の遠心送風機の断面図FIG. 5 is a sectional view of a conventional centrifugal blower.
【図６】同従来例の遠心送風機の羽根車の製造方法を示
す模式図FIG. 6 is a schematic view showing a method for manufacturing an impeller of a centrifugal blower of the conventional example.
１ 羽根車 ２ 主板 ３ 羽根 ４ 側板 ９ 突起部 １０ 凸部 １１ 穴 １２ 突起部 DESCRIPTION OF SYMBOLS 1 Impeller 2 Main plate 3 Blade 4 Side plate 9 Projection part 10 Convex part 11 Hole 12 Projection part
Claims (2)
に形成し、前記羽根の前記主板との取付部には主板底面
に対して傾斜を有し、かつ前記主板の羽根を有する面の
反対面の前記傾斜部分に、羽根前縁の延長線に相当する
位置に突起部を設け、かつ前記突起部の底面を前記主板
の底面に並行に形成し、前記羽根の上端部には樹脂材な
どで形成したリング状の側板を溶着させて形成した羽根
車を有する遠心送風機。1. A main plate and a plurality of blades are integrally formed of a resin material or the like, and a mounting portion of the blade with the main plate is inclined with respect to a bottom surface of the main plate and has a blade of the main plate. A protrusion is provided at a position corresponding to the extension line of the blade front edge on the opposite side of the inclined surface, and the bottom surface of the protrusion is formed in parallel with the bottom surface of the main plate. Centrifugal blower having an impeller formed by welding ring-shaped side plates made of material.
前記凹部に複数の穴を設け、かつ前記主板の羽根を有す
る面の反対面の前記傾斜部分に、羽根と略同形状に延長
させた突起部を形成し前記突起の底面を主板底面と並行
に形成した構成とした請求項１記載の遠心送風機。2. A main plate having a recess for accommodating a motor,
Providing a plurality of holes in the concave portion, and forming a protrusion extending substantially in the same shape as the blade on the inclined portion of the surface opposite to the surface having the blade of the main plate, the bottom surface of the projection is parallel to the bottom surface of the main plate. The centrifugal blower according to claim 1, which has a formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9617194A JPH07305699A (en) | 1994-05-10 | 1994-05-10 | Centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9617194A JPH07305699A (en) | 1994-05-10 | 1994-05-10 | Centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07305699A true JPH07305699A (en) | 1995-11-21 |
Family
ID=14157885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9617194A Pending JPH07305699A (en) | 1994-05-10 | 1994-05-10 | Centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07305699A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007192457A (en) * | 2006-01-19 | 2007-08-02 | Hitachi Ltd | Indoor unit of air conditioner |
| JP2009257132A (en) * | 2008-04-14 | 2009-11-05 | Fujitsu General Ltd | Turbo fan |
| JP2015500940A (en) * | 2011-12-07 | 2015-01-08 | インテル・コーポレーション | Volume resistance blower device and system |
| EP2255080A4 (en) * | 2008-02-22 | 2017-11-01 | Horton, Inc. | Fan manufacturing and assembly |
| JP2020090913A (en) * | 2018-12-04 | 2020-06-11 | リンナイ株式会社 | Centrifugal fan |
-
1994
- 1994-05-10 JP JP9617194A patent/JPH07305699A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007192457A (en) * | 2006-01-19 | 2007-08-02 | Hitachi Ltd | Indoor unit of air conditioner |
| JP4570048B2 (en) * | 2006-01-19 | 2010-10-27 | 日立アプライアンス株式会社 | Air conditioner indoor unit |
| EP2255080A4 (en) * | 2008-02-22 | 2017-11-01 | Horton, Inc. | Fan manufacturing and assembly |
| JP2009257132A (en) * | 2008-04-14 | 2009-11-05 | Fujitsu General Ltd | Turbo fan |
| JP2015500940A (en) * | 2011-12-07 | 2015-01-08 | インテル・コーポレーション | Volume resistance blower device and system |
| JP2020090913A (en) * | 2018-12-04 | 2020-06-11 | リンナイ株式会社 | Centrifugal fan |
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