JPS6220719Y2 - - Google Patents

Description

【考案の詳細な説明】 本案は、産業用機器の冷却用に供するターボフ
アンの回転翼の改良に関し、その目的とする所
は、高速回転による風圧に耐える薄手の金属翼片
を取付け加工によつて耐久性あり、且つ又風流に
抵抗ない強靭な理想的なターボフアンを安価に提
供せんとするものである。[Detailed description of the invention] This invention relates to the improvement of the rotor blades of turbo fans used for cooling industrial equipment. The purpose of the present invention is to provide an ideal turbo fan that is durable and strong and does not resist wind currents at a low cost.

従来此種ターボフアンにあつては、円盤に翼片
を取付ける技術としては、翼片の一部下側を折曲
げてリベツト止め又は溶接するか、或は又翼片下
側に突片を設け、該突片を円盤に設けた差込み孔
に差込み下方から単にかしめた程度のものであつ
たため高速回転による風圧に堪えず又かしめ部に
がたを生じ、フアンとしての性能が極度に低下す
る等永続使用が不可能となるばかりでなく、風の
流れに抵抗がある等の欠点があつた。 Conventionally, in the case of this type of turbo fan, the techniques for attaching the wing pieces to the disc include bending a part of the lower side of the wing piece and riveting or welding it, or providing a protruding piece on the lower side of the wing piece. Since the projecting piece was inserted into an insertion hole provided in the disk and simply caulked from below, it could not withstand the wind pressure due to high speed rotation, and the caulked part became loose, resulting in an extremely poor performance as a fan, etc. Not only was it impossible to use, but it also had drawbacks such as resistance to wind flow.

即ち以上のことから、これ等の欠点を解決しよ
うとする諸問題としては薄板の金属性ターボフア
ンにあつて最も重要な点は薄板性の翼片を、しか
も強風圧に堪える取付け加工を施すことと風道に
抵抗のないようにする翼片と回転円盤との関係に
ある。 In other words, from the above, the most important point in trying to solve these drawbacks for a thin-plate metallic turbo fan is to use thin-plate blades and attach them in a way that can withstand strong wind pressure. This is due to the relationship between the wing pieces and the rotating disk, which ensures that there is no resistance in the wind path.

この問題を解決するための手段として、実施例
である図面について説明すると、金属円盤１の中
心部に回転軸取付け用の透孔２と、その透孔周側
から円盤外周縁間に金属翼片６の取付け用の取付
孔３を翼片取付け位置に合せて穿設し、該取付け
孔に第３図で示すように下側面に盤面固着用の突
出部４と、該突出部間に円盤表面に直角に当接す
る切起し舌片５を翼片と直角一体に設けた該翼片
の舌片５を盤面上に、第１図の如く回転側に当て
がつて突出部４を取付け孔３に差込み盤面裏面か
ら該突出部を取付け孔にかしめ、以て翼片を盤面
に放射状に固着して回転翼Ａを設け、これを第４
図のように２段として回転軸７に取付け、ケーシ
ングＢ内に納めたものである。 As a means to solve this problem, referring to the drawings as an embodiment, a through hole 2 for attaching a rotating shaft is provided in the center of a metal disk 1, and a metal wing piece is provided between the circumferential side of the through hole and the outer periphery of the disk. A mounting hole 3 for mounting No. 6 is drilled in line with the wing piece mounting position, and a protrusion 4 for fixing the disc surface is provided on the lower surface of the mounting hole as shown in FIG. A cut-and-raised tongue piece 5 is provided integrally with the blade piece at right angles to the blade piece.The tongue piece 5 of the blade piece is placed on the board surface on the rotating side as shown in FIG. Insert the protrusion into the mounting hole from the back of the board, and fix the wing pieces radially to the board to provide the rotor A, which is attached to the fourth
As shown in the figure, it is attached to the rotating shaft 7 in two stages and housed in the casing B.

本案の回転翼は、上記の如き構成から成り、そ
の効果として円盤上に固定した翼片は、翼片に設
けた突出部にて円盤に直角にかしめると共に安定
用の舌片は、該円盤の回転側にあるので風の流れ
に支障なく、所謂風圧を受ける反対側から翼片が
倒れないように当接セツトしたので翼片は金属製
薄板であるが風圧による倒れ防止効果は勿論のこ
と、上記の如く風の流れは頗る良好で回転翼片は
円滑な回転が行なわれる。 The rotary blade of the present invention has the above-mentioned configuration, and as a result, the blade fixed on the disk is caulked at right angles to the disk by the protrusion provided on the blade, and the stabilizing tongue piece is attached to the disk. Since it is on the rotating side of the blade, it does not interfere with the flow of wind, and the blades are set in contact with each other so that they do not fall down from the opposite side that receives wind pressure.Although the blades are made of thin metal plates, they are of course effective in preventing them from falling due to wind pressure. As mentioned above, the wind flow is extremely good and the rotor blades rotate smoothly.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本案実施例を示したもので、第１図は回
転翼の平面図、第２図は同上表面の半面を示した
裏面図、第３図は翼片の斜面図、第４図はケーシ
ングを断面にて示した一実施例の正面図である。 尚、図面において、１……円盤、２……回転軸
取付け用の孔、３……翼片取付け孔、４……翼片
に設けた突出部、５……翼片に設けた舌片、６…
…翼片、７……回転軸、Ａ……回転翼、Ｂ……ケ
ーシング、Ｍ……モーター。 The drawings show an embodiment of the present invention. Fig. 1 is a plan view of the rotor blade, Fig. 2 is a back view showing half of the same surface, Fig. 3 is a slope view of the blade, and Fig. 4 is a casing. FIG. 2 is a front view of one embodiment shown in cross section. In the drawings, 1... Disk, 2... Hole for attaching the rotating shaft, 3... Hole for attaching the wing piece, 4... Projection provided on the wing piece, 5... Tongue piece provided on the wing piece, 6...
...Blade piece, 7...Rotating shaft, A...Rotor blade, B...Casing, M...Motor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 吸気口と送風口を有する軸流多段式のケーシン
グ内で回転作動する回転翼において、中心部に回
転軸取付け用の透孔２を設け、該透孔の外周側よ
り外周縁間に翼片取付け孔３を穿設した円盤１の
該取付け孔３に、翼片６の下側に固着用の突出部
４と、その間に翼片と直角に成形した舌片５を交
互一体に設けた該翼片６の舌片を回転方向側に盤
面と直角に当接し、且つ突出部４を取付け孔３に
差込みかしめて翼片を円盤上に直角放射状に立設
固着したことを特徴とするターボフアン。 In a rotor blade that rotates within an axial flow multi-stage casing having an intake port and an air outlet, a through hole 2 for installing a rotating shaft is provided in the center, and a blade piece is installed between the outer peripheral edges from the outer peripheral side of the through hole. In this wing, protrusions 4 for fixing are provided on the lower side of the wing pieces 6, and tongue pieces 5 formed at right angles to the wing pieces are alternately and integrally provided in the attachment holes 3 of the disk 1 in which the holes 3 are bored. This turbo fan is characterized in that the tongue pieces of the blades 6 are brought into contact with the disk surface at right angles in the direction of rotation, and the protrusions 4 are inserted into the mounting holes 3 and caulked to fix the blades upright on the disk in a right-angled radial pattern.