CN201416570Y

CN201416570Y - Impeller for high-temperature centrifugal fan

Info

Publication number: CN201416570Y
Application number: CN200920115274XU
Authority: CN
Inventors: 曹国路; 陈立江; 马军显; 赵文杰; 王立锋
Original assignee: SHANGYU SPECIAL FANS CO Ltd
Current assignee: ZHEJIANG SHANGFENG GAOKE SPECIAL FAN INDUSTRY CO., LTD.
Priority date: 2009-03-12
Filing date: 2009-03-12
Publication date: 2010-03-03
Anticipated expiration: 2019-03-12

Abstract

The utility model discloses an impeller for a high-temperature centrifugal fan. The impeller comprises a front disk, a back disk and a plurality of blades, wherein the outer ends of the blades are equably distributed between the peripheries of the front disk and the back disk; the blades extend between the front disk and the back disk; and the extending distance of at least one blade is larger than the extending distances of the other blades, that is, the inner end of at least one blade is in the position of the D radius while the inner ends of the other blades are in the position of the sameradius larger than the D radius. Through the adoption of the scheme, the rigidity of the impeller is increased; the impeller of the high-temperature centrifugal fan is not easily deformed in the high-temperature environment, and is particularly suitable for operation in the high-temperature environment, and the running quality and service life of the fan are ensured.

Description

A kind of impeller of high temperature centrifugal blower

Technical field

The utility model relates to a kind of parts of high temperature centrifugal blower, the impeller of a kind of high temperature centrifugal blower of more specifically saying so belongs to blower fan and ventilating engineering technical field.

Background technique

The high temperature centrifugal blower is usually used in industries such as Industry Furnace, non-ferrous metal industry, iron and steel etc.Its operating ambient temperature is higher, generally at 300-800 ℃.The impeller of existing high temperature centrifugal blower comprises shroud, hub disk and several blades, the outer end of several blades distributes between the periphery of shroud and hub disk equably, described several blades extend to its inner in same radial location between shroud and hub disk, because the impeller of high temperature centrifugal blower is generally made by metallic material, the impeller of the high temperature centrifugal blower of said structure easy deformation under hot environment influences the ride quality and the working life of blower fan.

The model utility content

At above-mentioned situation, the problem that the utility model quasi-solution is determined provides a kind of impeller of not allowing yielding high temperature centrifugal blower under hot environment, to guarantee the ride quality and the working life of blower fan.

For achieving the above object, the utility model is by the following technical solutions: a kind of impeller of high temperature centrifugal blower, it comprises shroud, hub disk and several blades, the outer end of several blades distributes between the periphery of shroud and hub disk equably, described several blades extend between shroud and hub disk, the extended distance of at least one blade is greater than the extended distance of other blade, and promptly the inner of at least one blade is in the D radial location, and the inner of other blade is in the same radial location greater than the D radius.

In described several blades, can be every the extended distance of one or two or three s' blade extended distance greater than other blade, promptly every the inner of one or two or three s' blade in the D radial location, and the inner of other blade is in the same radial location greater than the D radius.

Adopt such scheme, because the extended distance of at least one blade is greater than the extended distance of other blade, the inner that is at least one blade is in the D radial location, and the inner of other blade is in the same radial location greater than the D radius, therefore increased the rigidity of impeller, the impeller of the high temperature centrifugal blower of said structure is not easy distortion under hot environment, be particluarly suitable for working under the hot environment, has guaranteed the ride quality and the working life of blower fan.

Description of drawings

Fig. 1 is the structural representation of the impeller of high temperature centrifugal blower of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to cut-away view.

Among the figure: 1-shroud, 2-hub disk, 3-blade, 4-outer end, 5-the inner.

Embodiment

As shown in Figure 1, the impeller of high temperature centrifugal blower of the present utility model, it comprises shroud 1, hub disk 2 and several blades 3, and the outer end 4 of several blades 3 distributes between the periphery of shroud and hub disk equably, and described several blades extend between shroud 1 and hub disk 2.The blade wheel structure of the high temperature centrifugal blower of said structure and prior art is similar, therefore is not described in detail.

Referring to Fig. 2, as characteristics of the present utility model, the extended distance of at least one blade is greater than the extended distance of other blade in its several blades 3, and promptly the inner 5 of at least one blade is in the D radial location, and the inner 5 of other blade 3 is in the same radial location greater than the D radius.

Be specially in described several blades 3, every the extended distance of one or two or three s' blade 3 extended distance greater than other blade 3, promptly every the inner 5 of one or two or three s' blade 3 in the D radial location, and the inner of other blade 3 is in the same radial location greater than the D radius.In Fig. 2, only being that example is illustrated greater than the extended distance of other blade 3 every the extended distance of three blade 3.

Claims

1, a kind of impeller of high temperature centrifugal blower, it comprises shroud (1), hub disk (2) and several blades (3), the outer end of several blades (4) distributes between the periphery of shroud and hub disk equably, described several blades extend between shroud (1) and hub disk (2), it is characterized in that the extended distance of the extended distance of at least one blade greater than other blade, the inner (5) that is at least one blade is in the D radial location, and the inner (5) of other blade (3) is in the same radial location greater than the D radius.

2, the impeller of high temperature centrifugal blower according to claim 1, it is characterized in that in described several blades (3), every the extended distance of one or two or three s' blade (3) extended distance greater than other blade (3), promptly every the inner (5) of one or two or three s' blade (3) in the D radial location, and the inner of other blade (3) is in the same radial location greater than the D radius.