CN201152279Y - Single-stage low speed blast engine blade wheel device - Google Patents

Abstract

The utility model relates to the field of fans, in particular to an impeller device of a single-stage and low-speed fan. A turntable of the impeller is added with reinforcing muscles, the blades in the impeller are composed of half of long pieces and half of short pieces, and the outlet installation angle of the impeller is between 55 and 60 degrees. Adopting the technical proposal, on the basis of former rotary speed and adding blade number of the impeller, the fan performance and efficiency are enhanced, and cost is reduced.

Description

The impeller unit of single-stage low speed blower

Technical field

The utility model relates to the blower field, is a kind of impeller unit of single-stage low speed blower.

Background technique

Single-stage low speed blower uses widely at each industrial department, according to design theory in the past, along with the increase of blade exit established angle, flow coefficient should increase, like this, the particularly design of chemical industry Intermediate High Pressure small-flow blower, the ratio of blade exit width and impeller cylindrical is very little, and efficient is low, the rev up or increase impeller progression and reach requirement of having to, like this, increased cost of production.

Summary of the invention

The purpose of this utility model is that a kind of new impeller unit will be provided, and need not rev up or increases impeller progression, just can reach designing requirement.

The utility model is achieved in that on the wheel disc of impeller increases strength bar, and the blade in the impeller the inside is that deviated splitter vane is formed, and respectively is half, and the exit installation angle of blade is 55 degree～60 degree.

Owing to adopted technique scheme, at rev up not or increase on the basis of the number of blade of impeller, improved fan performance and efficient, reduced cost.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

In the drawings: 1, established angle; 2, linear leaf; 3, short blade; 4, strength bar; 5, impeller shroud; 6, hub disk; 7, impeller

Embodiment

Down in that the utility model is further described in conjunction with the accompanying drawings and embodiments.

In Fig. 1 and Fig. 2: increase strength bar 4 on the hub disk 6 of impeller 7, the blade in impeller 7 the insides is that linear leaf 2 and short blade 3 are formed, and respectively is half, and the exit installation angle 1 of blade is 55 degree～60 degree.

Claims (1)

1, the impeller unit of single-stage low speed blower, it is characterized in that going up increase strength bar (4) at the hub disk (6) of impeller (7), blade in impeller (7) the inside is that linear leaf (2) and short blade (3) are formed, and respectively is half, and the exit installation angle of blade (1) is 55 degree～60 degree.

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