【図面の簡単な説明】[Brief explanation of drawings]
第１図は、従来の動翼可変ピッチ軸流ファンの流量と圧
力の関係を示すグラフ、第２図は従来の動翼可変ピッチ
軸流ファンの略示的縦断面図、第３図はその動翼と静翼
の走行態様説明図、第４図はその翼列系における速度三
角形を示す図、第５図は、その動翼取付角変更量Δθ〈
０の場合の圧力損失係数と取付角変更量との関係を示す
グラフ、第６図はその出口旋回流速と圧力損失係数との
関係を示すグラフ、第７図は、その迎え角と転向角及び
圧力損失係数との関係を示すグラフ、第８図は、その圧
力上昇及び翼素圧力損失係数と流量との関係を示すグラ
フ、・第９図及び第１０図は本考案の一実施例の概略説
明図で、第９図は縦断面図、第１０図は静翼（出口案内
翼）及び動翼の作動機構例の説明図、第１１図はその動
翼取付角変更量と静翼取付角変更量との関係を示すグラ
フ、第１２図は動翼と静翼のピッチ変更態様説明図、第
１３図Ａ、 Ｂは従来例と本考案との性能を比較して示
す流量と圧力上昇及び圧力損失係数との関係を示すグラ
フ、第１４図は従来例と本考案の流量と圧力上昇の関係
を比較して委すグラフ、第１５ ・図は静翼を二
分割した例の静翼部の縦断面図、第１６図は第１５７図
のＹ−Ｙ線矢親図である。
０１：動翼、０３：ケーシング、０４：翼車ボス、０５
：入口内筒、０６：出口内筒、１１：静翼（出口案内翼
）、１２：翼軸、１３ニレバー、１４：孔、１５：コン
トローラ、１６：指令信号、１７：静翼指令信号、１８
：動翼指令信号、１９：動翼ピッチ可−変機構、２０：
アクチュエータ。
−１第２図
−第５図
第６図
、Ｕｕ２、−−−Figure 1 is a graph showing the relationship between flow rate and pressure of a conventional variable pitch rotor blade axial fan, Figure 2 is a schematic vertical cross-sectional view of a conventional variable pitch axial fan, and Figure 3 is a graph showing the relationship between flow rate and pressure of a conventional variable pitch rotor blade axial fan. An explanatory diagram of the running state of the rotor blades and stationary blades, Fig. 4 is a diagram showing the speed triangle in the blade cascade system, and Fig. 5 is the change amount Δθ of the rotor blade mounting angle.
A graph showing the relationship between the pressure loss coefficient and the mounting angle change amount in the case of 0, Fig. 6 is a graph showing the relationship between the outlet swirl flow velocity and the pressure loss coefficient, and Fig. 7 shows the angle of attack, turning angle, and A graph showing the relationship between the pressure loss coefficient and Figure 8 is a graph showing the relationship between the pressure rise and blade element pressure loss coefficient and the flow rate. Figures 9 and 10 are an outline of an embodiment of the present invention. In the explanatory diagrams, Fig. 9 is a longitudinal sectional view, Fig. 10 is an explanatory diagram of an example of the operating mechanism of the stator blade (exit guide vane) and rotor blade, and Fig. 11 is the amount of change in the rotor blade installation angle and the stator blade installation angle. A graph showing the relationship with the amount of change, Figure 12 is an explanatory diagram of the pitch change mode of moving blades and stationary blades, and Figures 13A and B are flow rates, pressure rises, and comparisons of the performance of the conventional example and the present invention. Figure 14 is a graph showing the relationship between pressure loss coefficient, Figure 14 is a graph comparing the relationship between flow rate and pressure rise between the conventional example and the present invention, and Figure 15 is a graph showing the stator blade section of an example where the stator blade is divided into two parts. FIG. 16 is a longitudinal sectional view taken along the line Y-Y in FIG. 157. 01: Moving blade, 03: Casing, 04: Blade wheel boss, 05
: Inlet inner cylinder, 06: Outlet inner cylinder, 11: Stator vane (exit guide vane), 12: Blade shaft, 13 Nilever, 14: Hole, 15: Controller, 16: Command signal, 17: Stator vane command signal, 18
: Moving blade command signal, 19: Moving blade pitch variable mechanism, 20:
actuator. -1 Figure 2-Figure 5 Figure 6, Uu2, ---