Air feeder vane wheel

A blower and impeller technology, applied in the direction of mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of flow control noise improvement and fan efficiency improvement limitations

Inactive Publication Date: 2006-10-18
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the point of intersection between the leading edge 31 and the blade tip 34 becomes a point that defines the generation state of the blade tip vortex. The stripping of the negative pressure surface of the blade end vortex control, that is, the flow control will be limited, of course, this will limit the improvement of noise and fan efficiency.
In addition, when the leading edge 31 is a forward-inclined straight line, although it is possible to stagger the cut-off time of the air, it is also limited, and the improvement of noise and fan efficiency in flow control is also limited.

Method used

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  • Air feeder vane wheel
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  • Air feeder vane wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to figure 1 , figure 2 , image 3 , Figure 7 , Figure 11 Example 1 of the present invention will be described.

[0036] figure 1 It is a meridian view of the oblique flow fan impeller of the present invention. figure 2 It is a cross-sectional view in the radial direction of the impeller of the oblique flow blower according to the present invention. image 3 It is a plan view of the impeller of the oblique flow blower of the present invention. Figure 7 It is a perspective view of the impeller of the diagonal flow blower of the present invention. Figure 11 It is a schematic diagram of the operation state of the impeller of the diagonal flow blower of the present invention.

[0037] figure 1 Among them, the oblique flow blower impeller 1 of the present invention is constituted by setting a plurality of thin blades 6 on a substantially truncated cone-shaped hub 4, and the leading edge 2 of the blade 6 is formed in the following shape: on the meridian...

Embodiment 2

[0041] refer to figure 1 , Figure 4 , Figure 5 , Image 6 Example 2 of the present invention will be described.

[0042] figure 1 It is a meridian view of the oblique flow fan impeller of the present invention. Figure 4 It is a plan view of the impeller of the oblique flow blower of the present invention. Figure 5 It is the expanded view of the blade section of the oblique flow fan impeller of the present invention. Image 6 is the experimental data of aspect ratio and noise-air volume.

[0043] figure 1 , Figure 4 For the oblique flow blower impeller provided in , in the meridian plane of the blade 6, that is, the shape of the rotation track, the radius from the leading edge 2 to the midpoint of the hub 4 and the blade tip 5 is r1, and the radius from the trailing edge 3 to the hub 4 The radius from the midpoint of the blade tip 5 is r2, and the blade chord length in the cross-sectional developed shape of the flow path centerline B-B (the centerline connectin...

Embodiment 3

[0048] refer to figure 2 Embodiment 3 of the present invention will be described.

[0049] figure 2 It is a cross-sectional view in the radial direction of the impeller of the oblique flow blower according to the present invention.

[0050] exist figure 2 In the provided oblique flow blower impeller 1, the blade thickness of the blade 6 on the side of the hub 4 is t1, and the blade thickness of the blade tip is t2, and the dimensional relationship of t1>t2 is satisfied at this time.

[0051] Next, the operation and function of the impeller of the oblique flow blower constructed as above will be described.

[0052] When the oblique flow blower impeller 1 is made of resin, etc., because the relationship of t1>t2 is satisfied, the weight of the fan on the outer peripheral side is relatively small, so the centrifugal force added to the hub 4 is small, and even if the fan rotates at a high speed, it can also reduce partly broken from the hub 4 of danger. In the strength ana...

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Abstract

The oblique flow blower impeller of the present invention focuses on improving fan efficiency and reducing noise, and improves these performances by improving the structure of the fan. An impeller (1) of a diagonal flow blower is formed by arranging a plurality of thin blades (6) on a roughly truncated cone-shaped hub (4), and the front edge (2) of the blades (6) is formed in the following shape: On the meridian surface of the blade (6), a concave curve is formed on the upper side of the outer peripheral side near the midpoint (BB) of the blade tip (5) of the hub (4) and the blade (6) relative to the wind. The more hub side near the point is formed as a convex curve relative to the upper side of the wind, and the radial cross-sectional shape of the blade (6) is formed as follows: the more blade tip (5) side near the midpoint is formed as a concave curve relative to the upper side of the wind , the more hub (4) side near the midpoint is formed as a convex curve relative to the upper side of the wind. And, the leading edge (2) is formed by a helical curve.

Description

(1) Technical field [0001] The present invention relates to a blower impeller used in an outdoor unit of an air conditioner, and more particularly to a structure for improving the static pressure efficiency and reducing noise of the blower. (2) Background technology [0002] In the prior art, Patent Document 1 (Japanese Patent Application Laid-Open No. 11-294389 ) describes an impeller for a diagonal flow blower formed by arranging a plurality of thin blades on a substantially truncated cone-shaped hub. [0003] Figure 13 , Figure 14 , Figure 15 A conventional oblique flow blower impeller described in Patent Document 1 is shown. Figure 13 , Figure 14 , Figure 15 Among them, the oblique flow blower impeller 30 is provided with a plurality of thin blades 35 on a substantially frusto-conical hub 33 . The leading edge 31 of the blade 35 is formed in the following shape: on the meridian plane of the blade 35, a concave curve is formed on the outer peripheral side near t...

Claims

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Application Information

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IPC IPC(8): F04D29/38
Inventor 泉善树
Owner PANASONIC CORP
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