JPS61186789U

JPS61186789U -

Info

Publication number: JPS61186789U
Application number: JP7091785U
Authority: JP
Priority date: 1985-05-14
Filing date: 1985-05-14
Publication date: 1986-11-21

Description

[Brief explanation of the drawing]

添付図面第１図〜第５図は本考案の実施例を示
し、第１図は渦流送風機を示す一部断面図、第２
図は第１図のＡ―Ａ′線に沿う断面図、第３図は
第２図のＢ―Ｂ′線に沿う断面図、第４図は区画
壁に張出し壁を形成し、次いで三角状切欠溝を形
成し、且つ谷部に丸みをつける所を説明する為の
図、第５図は区画壁両側に於ける張出し壁切欠溝
谷部の丸みの変化と騒音値の相関関係図、第６図
、第７図は各々従来例要部断面図であり、図中１
はケーシング、２は通風路、３はインペラー、４
は電動機、５は羽根、６は区画壁、７は吸い込み
口、８は吐出口、９，１０は消音器、１１は通風
路内径側基端、１２は通風路内径側、１３は通風
路外径側基端、１４は通風路外径側、１５は張出
し壁、１６は開口縁部、１７は開口縁部１６と通
風外径側基端の対向一致を示す対向線、１８は三
角状の切欠溝、１９は張出し壁の縁部、２０は山
頂部、２１は谷部である。 The accompanying drawings, FIGS. 1 to 5, show an embodiment of the present invention, in which FIG. 1 is a partial sectional view showing a vortex blower, and FIG.
The figure is a cross-sectional view taken along line A-A' in Figure 1, Figure 3 is a cross-sectional view taken along line B-B' in Figure 2, and Figure 4 shows a structure in which an overhanging wall is formed on the partition wall, and then a triangular shape is formed. Figure 5 is a diagram for explaining where notched grooves are formed and the valleys are rounded. Figure 5 is a diagram showing the correlation between the change in roundness of the groove grooves on both sides of the partition wall and the noise value. Figure 6 7 and 7 are sectional views of the main parts of the conventional example, and 1 in the figure.
is the casing, 2 is the ventilation passage, 3 is the impeller, 4
is the electric motor, 5 is the blade, 6 is the partition wall, 7 is the suction port, 8 is the discharge port, 9 and 10 are silencers, 11 is the base end on the inside diameter side of the ventilation path, 12 is the inside diameter side of the ventilation path, 13 is the outside of the ventilation path 14 is the outer diameter side of the ventilation passage, 15 is the overhanging wall, 16 is the opening edge, 17 is an opposing line showing the alignment of the opening edge 16 and the ventilation outer diameter side base end, 18 is a triangular shaped 19 is the edge of the overhanging wall, 20 is the peak, and 21 is the valley.

Claims

[Scope of utility model registration request]

The casing 1 includes a casing 1 having an annular ventilation passage 2, an impeller 3 disposed within the casing 1 and rotated by an electric motor 4, and a partition wall 6 in the annular ventilation passage 2 of the casing 1. A suction port 7 and a discharge port 8 are formed on both sides of the partition wall 6, and a suction port 7 and a discharge port 8 are formed on both sides of the partition wall 6 facing the impeller 3. In a vortex blower in which an overhanging wall 15 is formed which overhangs gradually toward the side base end 13, a triangular notch groove 18 is formed in a region of the overhanging wall 15 near the outside diameter side 14 of the ventilation passage. Accordingly, the edge 19 of this overhanging wall 15
is shaped so that it overhangs from the base end 11 on the inner diameter side of the ventilation passage, reaches the peak part 20, then descends to the valley part 21, and overhangs again to touch the base end 13 on the outside diameter side of the ventilation passage, The base end position 13 on the outer diameter side of the ventilation passage 2 is set to face and coincide with the opening edge 16 of the suction or discharge port, and the shape of the trough 21 of the overhanging wall edge is rounded. A vortex blower characterized by its shape.