CN205639063U

CN205639063U - Fan impeller

Info

Publication number: CN205639063U
Application number: CN201620153367.1U
Authority: CN
Inventors: 何立博
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2016-02-29
Filing date: 2016-02-29
Publication date: 2016-10-12
Anticipated expiration: 2026-02-28

Abstract

The utility model discloses a fan impeller, including impeller dish, front end housing and rear end cap, the front end at the impeller dish is installed to the front end housing, the rear end at the impeller dish is installed to the rear end cap, the impeller dish is including the blade of arranging along the impeller dish circumferencial direction, its characterized in that: the thickness of blade in the middle of the blade in the middle of or position inboard partially locate the biggest, and the thickness of blade from this thickness the biggest position inside and outside to the blade both sides direction reduce gradually. Compared with the prior art, the utility model has the advantages of: this fan impeller's blade adopts wing blade, promptly the thickness of blade in the middle of the blade in the middle of or inboard partially position department the biggest, and the thickness of blade from this thickness the biggest position inside and outside to the blade both sides direction reduce gradually, the fluid that can reduce the reality between the blade separates and flows back to obviously improve the work efficiency of impeller.

Description

A kind of draught fan impeller

Technical field

This utility model relates to a kind of draught fan impeller.

Background technology

It is fastened and connected by two ends after traditional impeller used for range hood generally plate stamping pressing formation, blade typically can only make the circular arc of uniform thickness, due to impeller speed generally more than 800RPM, thus impeller is in the course of the work, fluid actual between blade separates with backflow substantially, not only noise is relatively big, and inefficient." a kind of centrifugal fan impeller structure " as disclosed in the Chinese invention patent application of Application No. 201510016705.7 (application publication number is CN 104791296 A), this draught fan impeller has front and rear ring, it is fixed with blade between front ring and rear circle, the cross section of blade is arc, and blade is the arc-shaped structure of uniform thickness.In order to overcome the drawbacks described above existing for the draught fan impeller of existing circular arc vane, need existing fan impeller structure is further improved.

Utility model content

Technical problem to be solved in the utility model is for above-mentioned prior art present situation, it is provided that a kind of interlobate fluid separates the draught fan impeller less, noise is relatively low.

The technical scheme that the above-mentioned technical problem of this utility model solution is used is: this draught fan impeller, including the impeller disk, drive end bearing bracket and rear end cap, described drive end bearing bracket is arranged on the front end of the impeller disk, described rear end cap is arranged on the rear end of the impeller disk, the described impeller disk includes the blade along the arrangement of impeller disk circumferencial direction, the thickness of described blade is maximum in the position of the middle or middle inner side partially of blade, and the thickness of blade is gradually reduced from the maximum position of this thickness to direction inside and outside blade, it is characterized in that: the described impeller disk includes shroud and middle hub disk, described middle hub disk is structure as a whole, described blade includes shroud blade, mid-game blade and hub disk blade, described shroud blade mutually staggers with described mid-game blade, described mid-game blade mutually staggers with described hub disk blade.

Preferably, the two sides of described blade are curved surface, and bend to the same side.So, more preferable for reducing interlobate divided fluid stream effect, noise also can further reduce.

For the ease of depanning, it is preferable that described impeller is moulding, described blade pattern draft on impeller axis direction is 0.2 °～1.0 °.This pattern draft can adjust accordingly according to the height of blade.

Further preferably, described drive end bearing bracket is arranged on the front end of described shroud, the trailing flank of drive end bearing bracket is provided with the front end draw-in groove inserted for described shroud blade, the rear end of described shroud is provided with the middle draw-in groove inserted for described mid-game blade, described rear end cap is arranged on the rear end of described middle hub disk, is provided with the rear end draw-in groove inserted for described hub disk blade on the leading flank of rear end cap.Use after said structure, it is simple to drive end bearing bracket, shroud, middle hub disk and rear end cap carry out ultrasonic bonding or bonding when location and being connected.

Compared with prior art, the utility model has the advantage of: the blade of this draught fan impeller uses air-foil blade, the i.e. thickness of blade is maximum in the position of the middle or middle inner side partially of blade, and the thickness of blade is gradually reduced from the maximum position of this thickness to direction inside and outside blade, the actual fluid between blade can be reduced separate and backflow, thus significantly improve the work efficiency of impeller.In addition, after the blade of shroud and middle hub disk uses dislocation design, on the one hand can ensure that impeller plastic raw materials injection when more readily flows into each leaf area, reduce quality problems, on the other hand, the time difference of exit flow can be formed on impeller axis direction, thus reduce the noise that exit flow causes.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model embodiment；

Fig. 2 is the perspective exploded view of this utility model embodiment；

Fig. 3 is the perspective exploded view of this utility model another angle of embodiment；

Fig. 4 is the top view of the shroud of this utility model embodiment；

Fig. 5 is the enlarged diagram of part A in Fig. 4；

Fig. 6 is the top view of the middle hub disk of this utility model embodiment.

Detailed description of the invention

Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.

As shown in Figures 1 to 6, the draught fan impeller in the present embodiment includes shroud 1, middle hub disk 2, drive end bearing bracket 3 and rear end cap 4, wherein, shroud 1 and middle hub disk 2 constitute the impeller disk of impeller, middle hub disk 2 is structure as a whole, and drive end bearing bracket 3 is arranged on the front end of shroud 1, and rear end cap 4 is arranged on the rear end of middle hub disk 2.

Shroud 1 includes shroud blade 11, and middle hub disk 2 includes mid-game blade 21 and hub disk blade 22, and shroud blade 11 mutually staggers with mid-game blade 21, and mid-game blade 21 mutually staggers with hub disk blade 22.After the blade of shroud 1 and middle hub disk 2 uses dislocation design, on the one hand can ensure that impeller plastic raw materials injection when more readily flows into each leaf area, reduce quality problems, on the other hand, the time difference of exit flow can be formed on impeller axis direction, thus reduce the noise that exit flow causes.

In the present embodiment, shroud 1, middle hub disk 2, drive end bearing bracket 3 and rear end cap 4 are by working of plastics single injection-molded, their mounting structure is as follows: be provided with the front end draw-in groove 31 inserted for shroud blade 11 on the trailing flank of drive end bearing bracket 3, the rear end of shroud 1 is provided with the middle draw-in groove 12 inserted for mid-game blade 21, rear end cap 4 is arranged on the rear end of middle hub disk 2, the leading flank of rear end cap 4 is provided with the rear end draw-in groove 41 inserted for hub disk blade 22, after using above-mentioned notch, it is easy to drive end bearing bracket 3, shroud 1, middle hub disk 2 and rear end cap 4 carry out ultrasonic bonding or bonding when location and be connected.

Shroud blade 11, mid-game blade 21 and hub disk blade 22 in the present embodiment use air-foil blade, i.e. in the middle of the blade or the position of middle inner side partially is maximum for the thickness of blade, and the thickness of blade is gradually reduced from the maximum position of this thickness to direction inside and outside blade.As it is shown in figure 5, the two sides of shroud blade 11 that is first side 1a and the second side 1b is curved surface, and bend to the same side.The wing-shaped structure that mid-game blade 21 is identical with shroud blade 11 with the employing of hub disk blade 22, the most reinflated description at this.

Additionally, the depanning difficulty of the working of plastics in order to consider, the pattern draft on impeller axis direction of the air-foil blade in the present embodiment is 0.2 °～1.0, and this pattern draft can be adjusted according to the height of blade.

The foregoing is only preferred implementation of the present utility model; should be understood that; for those of ordinary skills; without departing under principle premise of the present utility model; this utility model can be carried out multiple remodeling or improvement; such as except the impeller outer of side double suction before and after employing the present embodiment, it is also possible to use the blade wheel structure that one side is inhaled, within these are regarded as protection domain of the present utility model.

Claims

null1. a draught fan impeller，Including the impeller disk、Drive end bearing bracket (3) and rear end cap (4)，Described drive end bearing bracket (3) is arranged on the front end of the impeller disk，Described rear end cap (4) is arranged on the rear end of the impeller disk，The described impeller disk includes the blade along the arrangement of impeller disk circumferencial direction，The thickness of described blade is maximum in the position of the middle or middle inner side partially of blade，And the thickness of blade is gradually reduced from the maximum position of this thickness to direction inside and outside blade，It is characterized in that: the described impeller disk includes shroud (1) and middle hub disk (2)，Described middle hub disk (2) is structure as a whole，Described blade includes shroud blade (11)、Mid-game blade (21) and hub disk blade (22)，Described shroud blade (11) is mutually staggered with described mid-game blade (21)，Described mid-game blade (21) is mutually staggered with described hub disk blade (22).
Draught fan impeller the most according to claim 1, it is characterised in that: the two sides of described blade are curved surface, and bend to the same side.
Draught fan impeller the most according to claim 1, it is characterised in that: described impeller is moulding, and described blade pattern draft on impeller axis direction is 0.2 °～1.0 °.
Draught fan impeller the most according to claim 1, it is characterized in that: described drive end bearing bracket (3) is arranged on the front end of described shroud (1), the trailing flank of drive end bearing bracket (3) is provided with the front end draw-in groove (31) inserted for described shroud blade (11), the rear end of described shroud (1) is provided with the middle draw-in groove (12) inserted for described mid-game blade (21), described rear end cap (4) is arranged on the rear end of described middle hub disk (2), the leading flank of rear end cap (4) is provided with the rear end draw-in groove (41) inserted for described hub disk blade (22).