Blower impeller

A blower and impeller technology, applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of air volume performance deterioration, productivity reduction, resin molding difficulty, etc., to achieve air supply performance, suppress the increase of turbulent noise, Effect of suppressing deterioration of productivity

Inactive Publication Date: 2010-10-13
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And, due to the shedding of the airflow, turbulent flow occurs
This turbulence results in poor air volume performance
Also, there is a slight increase in noise due to turbulent noise
Furthermore, since the thickness of the blade is constantly changing, and the thickness of the tip (outer peripheral portion) of the blade becomes thicker, resin molding is not difficult, and productivity decreases.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0029] figure 1 It is a perspective view of the blower impeller according to Embodiment 1 of the present invention, showing the side and front of the blower impeller. figure 2 It is a side view of the blower impeller according to Embodiment 1 of the present invention, image 3 It is a front view of the blower impeller according to Embodiment 1 of the present invention. in addition, Figure 4 and Figure 5 means roughly along the figure 2 The cross-sectional shape of the blade in the circumferential direction of the blade is shown along the equal flow lines A1-A2.

[0030] Such as Figure 1 to Figure 3 As shown, the blower impeller 11 includes a substantially cylindrical hub 12 and a plurality of (three) blades 13 arranged around the hub 12 and extending radially from the hub 12 . In addition, in the first embodiment, the hub is made into a cylindrical shape, but the shape of the hub is not limited to the cylindrical shape, for example, a truncated cone shape, a combin...

Embodiment approach 2

[0040] Figure 6 It is a perspective view of the blower impeller according to Embodiment 2 of the present invention, showing the side and front of the blower impeller. Figure 7 It is a front view of the blower impeller according to Embodiment 2 of the present invention. Components corresponding to components already described in Embodiment 1 above are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0041] The cross-sectional shape in the circumferential direction of each blade 13 included in the blower impeller 11 is the same shape as that in the first embodiment described above. That is, the region from the leading edge 14 to the position M of each blade 13 is formed in an airfoil shape. In addition, the region from the position M to the trailing edge 15 of each blade 13 is formed in a shape with a constant thickness ( t1 = t2 ).

[0042] In the blower impeller 11, as Figure 6 , Figure 7 As shown, the thickness of the root p...

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PUM

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Abstract

The present invention provides a blower impeller which can restrain performance deterioration of air amount and increase of turbulence noise when light weight of the blades is obtained. The blower impeller of the invention is provided with a wheel hub 12 which is rotatably driven and a plurality of blades 13 that are configured to the periphery of the wheel hub 12 and radially extend from the wheel hub 12. The cross section at the side of a front edge 14 in the circumferntial direction of each blade 13 is wing-shaped. The cross section at the side of a back edge 15 in the circumferential direction of each blade 13 is a shape with a certain thickness.

Description

technical field [0001] The present invention relates to a blower impeller used in a diagonal flow blower, an axial flow blower, and the like. Background technique [0002] Next, the blower impeller described in Japanese Patent Application Laid-Open No. 7-189985 will be described with reference to the drawings. Figure 8 is a perspective view of the blower impeller. Figure 9 It is an enlarged view of blades included in the fan impeller. Figure 10 is along Figure 9 A cross-sectional view of the blade along line A-A is shown. Figure 11 is along Figure 9 A cross-sectional view of the blade along line B-B is shown. [0003] The impeller 1 includes a substantially cylindrical hub 2 and a plurality of blades 3 provided on the hub 2 . The vane 3 has a recess 4 formed in a predetermined range on the negative pressure surface. The concave portion 4 is a portion where the thickness of the blade 3 is reduced from the negative pressure surface side of the blade 3 . [0004] F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/38F04D29/26
Inventor 酒井浩一武内裕幸辻义昭大谷史郎
Owner PANASONIC CORP
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