CN206608363U - Impeller - Google Patents

Abstract

The utility model discloses a kind of impeller, including：Wheel hub, cover plate and multiple blades, wheel hub is generally formed into column, the connecting portion for being suitable to be connected with drive device is provided with wheel hub, cover plate is located on the outer peripheral face of wheel hub, from one end of wheel hub to the other end, diametrically size gradually increases and is shaped generally as cone cover plate, multiple blades are uniformly located on the outer surface of cover plate along circumferentially-spaced open of cover plate, each blade is entrance point adjacent to one end of the central axis of cover plate, one end of each central axis of the blade away from cover plate is the port of export, and the direction of rotation of the port of export towards the impeller of each blade is obliquely installed.According to impeller of the present utility model, the fluid loss of the port of export can effectively be reduced, effectively expand efficient working range of the impeller in the case of low discharge, lift the service behaviour of impeller, expand the application of impeller, i.e. impeller it is simple in construction, can reduce fluid loss, increase efficient working range, favorable working performance.

Description

Impeller

Technical field

The utility model is related to blower fan technical field, more particularly, to a kind of impeller.

Background technology

Dust catcher or range hood structure in correlation technique, typically drive blower fan to rotate, so that close by drive device Negative pressure is formed in the housing of envelope, and then dust or oil smoke are drawn into dust collect plant, cleaning is reached or draws the effect of oil smoke, During dust catcher or lampblack absorber formation suction, due to being limited by conditions such as blade wheel structures, rotating speed is generally in 60000- Between 80000rpm, and the efficient point range worked is narrow, and the service behaviour of dust catcher or lampblack absorber is by very big limit System, therefore the structure of impeller is urgently improved.

Utility model content

The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.

Therefore, the utility model proposes a kind of impeller, the impeller it is simple in construction, can to reduce fluid loss, increase effective Working range, favorable working performance.

According to impeller of the present utility model, including：Wheel hub, cover plate and multiple blades, the wheel hub are generally formed into column, The connecting portion for being suitable to be connected with drive device is provided with the wheel hub, the cover plate is located on the outer peripheral face of the wheel hub, described From one end of the wheel hub to the other end, diametrically size gradually increases and is shaped generally as cone cover plate, multiple blades Uniformly it is located on the outer surface of the cover plate along circumferentially-spaced open of the cover plate, each blade is in the cover plate One end of heart axis is entrance point, and one end of each central axis of the blade away from the cover plate is the port of export, Mei Gesuo The port of export for stating blade is tilted towards the direction of rotation of the impeller.

According to impeller of the present utility model, by being arranged at intervals multiple blades, each blade on the circumferential surface of cover plate Entrance point arranged close to the central axis of cover plate, central axis arrangement of the port of export away from cover plate, also, each blade going out Mouth end is obliquely installed towards the direction of rotation of impeller, can effectively be reduced the fluid loss of the port of export, effectively be expanded impeller Efficient working range in the case of low discharge, has greatly improved the service behaviour of impeller, expands the application of impeller. The impeller it is simple in construction, can reduce fluid loss, increase efficient working range, favorable working performance.

In addition, according to impeller of the present utility model, can also have technical characteristic additional as follows：

According to one embodiment of the present utility model, imaginary line and institute where the port of export of each blade It is β, 0≤β≤60 ° to state the angle between the axis of cover plate.

According to one embodiment of the present utility model, axle of the entrance point relative to the cover plate of each blade Line is obliquely installed.

According to one embodiment of the present utility model, imaginary line and institute where the entrance point of each blade It is α, 30 °≤α≤90 ° to state the angle between the axis of cover plate.

According to one embodiment of the present utility model, the entrance point of each blade is respectively formed as outstanding Smooth curved surface.

According to one embodiment of the present utility model, the internal pressure face of the entrance point of each blade is recessed Shape, the pressure face of the port of export of each blade is convex, and the working face spill length of each blade is accounted for entirely The 0.15-0.4 of the length of blade.

According to one embodiment of the present utility model, the thickness of the blade, the blade thinnest part thickness is most The 0.5-0.8 of thickness at thickness.

According to one embodiment of the present utility model, the width of the blade is where from the entrance point to the port of export Direction is gradually reduced, and the minimum widith of the blade is the 0.3-0.6 of the Breadth Maximum of the blade.

According to one embodiment of the present utility model, the number of the blade is 5-10.

According to one embodiment of the present utility model, the blade is integrally formed with the cover plate and the wheel hub.

Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Fig. 1 is the front view of the impeller according to the utility model embodiment；

Fig. 2 is the sectional view of the line A-A along along Fig. 1；

Fig. 3 is the side view of the impeller according to the utility model embodiment；

Fig. 4 is the stereogram of the impeller according to the utility model embodiment.

Reference：

100：Impeller；

11：Wheel hub；12：Cover plate；13：Blade；131：Entrance point；132：The port of export.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings.Below by The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that new to this practicality The limitation of type.

First below the impeller 100 according to the utility model embodiment is specifically described with reference to accompanying drawing 1 to Fig. 4.

As shown in figure 1, being included according to the impeller 100 of the utility model embodiment：Wheel hub 11, cover plate 12 and multiple blades 13。

Specifically, wheel hub 11 is generally formed into the connecting portion for being provided with column, wheel hub 11 and being suitable to be connected with drive device, Cover plate 12 is located on the outer peripheral face of wheel hub 11, and from one end of wheel hub 11 to the other end, diametrically size gradually increases shape to cover plate 12 As conical shaped, multiple blades 13 are uniformly located on the outer surface of cover plate 12 along circumferentially-spaced open of cover plate 12, Mei Geye Piece 13 is entrance point 131, the one of each central axis of the blade 13 away from cover plate 12 adjacent to one end of the central axis of cover plate 12 Hold as the port of export 132, the direction of rotation of the port of export 132 towards the impeller 100 of each blade 13 is obliquely installed.

In other words, the impeller 100 is mainly made up of wheel hub 11, cover plate 12 and multiple blades 13, the shape of wheel hub 11 of impeller 100 It is cylindric into what is vertically extended, in being internally formed along its axially extending hollow chamber, cover plate 12 and wheel for wheel hub 11 Hub 11 is connected, and cover plate 12 forms the curved slab of the circumferentially extending along wheel hub 11, specifically, axle of the cover plate 12 along wheel hub 11 To, be formed as the upper end radial dimension of the cone that radial dimension gradually increases, i.e. cover plate 12 from the upper end of wheel hub 11 to lower end Less than the radial dimension of the lower end of cover plate 12, cover plate 12 is generally conical in the periphery of wheel hub 11.

In addition, uniform intervals are disposed with multiple blades 13 on the outer surface of cover plate 12, multiple blades 13 are along cover plate 12 Circumferentially-spaced to open arrangement, each blade 13 is arranged approximately along the radial direction of cover plate 12 in vortex shape, i.e., one end of each blade 13 Positioned at the upper end of cover plate 12, the other end of each blade 13 is located at the periphery edge of cover plate 12, and the entrance point 131 of each blade 13 is leaned on The axial centerline of nearly cover plate 12 is set, and the position of central axis of the port of export 132 away from cover plate 12 of each blade 13 is set Put, i.e., the entrance point 131 of each blade 13 is located at the upper end of cover plate 12, the port of export 132 is located at the lower end of cover plate 12, and each leaf The direction of rotation of the port of export of the port of export 132 towards the impeller 100 of piece 13 is in tilted layout.

Specifically, wheel hub 11 is connected with drive device, is rotated by the effect impeller 100 of drive device, cover plate 12 extend along side of the excircle radial direction of wheel hub 11 away from the central axis of cover plate 12, are disposed with cover plate 12 multiple Blade 13, the port of export 132 of each blade 13 is obliquely installed.

Thus, it is many by being arranged at intervals on the circumferential surface of cover plate 12 according to the impeller 100 of the utility model embodiment Individual blade 13, the entrance point 131 of each blade 13 arranges that the port of export 132 is away from cover plate 12 close to the central axis of cover plate 12 Central axis is arranged, also, the direction of rotation of the port of export 132 towards the impeller 100 of each blade 13 is obliquely installed, can be effectively Reduce the fluid loss of the port of export 132, effectively expand efficient working range of the impeller 100 in the case of low discharge, significantly Ground improves the service behaviour of impeller 100, expands the application of impeller 100.The impeller 100 it is simple in construction, can reduce Fluid loss, increase efficient working range, favorable working performance.

Alternatively, according to one embodiment of the present utility model, the imaginary line where the port of export 132 of each blade 13 Angle between the axis of cover plate 12 is β, 0≤β≤60 °.

Reference picture 4, the central axis of straight line where the length direction of the port of export 132 of each blade 13 and cover plate 12 it Between angle represent that β is more than or equal to 0 ° and less than or equal to 60 ° with β, for example, β can take 35 °, 40 °, 45 °, 50 °, 55 °, 60 ° etc., i.e., the straight line where the length direction of the port of export 132 of each blade 13 and the angle between the central axis of cover plate 12 It can be 35 °, 40 °, 45 °, 50 °, 55 °, 60 ° etc., specifically, setting, β value can be processed according to actual conditions It will be understood by those skilled in the art.By where the length direction of the port of export 132 of each blade 13 Angle β between the central axis of straight line and cover plate 12 is limited in above range, the more effective fluid damage reduced in the port of export 132 Lose, effectively expand efficient working range of the impeller 100 in the case of low discharge.

In this application, the entrance point 131 of each blade 13 is obliquely installed relative to the axis of the cover plate 12, Ke Yili Solution, the incline direction of the entrance point 131 of each blade 13 has certain angle with the axial direction of cover plate 12, so in fluid When being flowed into by the entrance point 131 of each blade 13, flow into, reduce along the incline direction of the entrance point 131 of each blade 13 The loss of the fluid of entrance point 131, when impeller 100 is working in the case of low discharge, the efficient working range of impeller 100 is wider.

Advantageously, the angle between the imaginary line at the place of entrance point 131 and the axis of cover plate 12 of each blade 13 is α, 30 °≤α≤90 °.

Referring to Figures 1 and 2, the center of the straight line where the length direction of the entrance point 131 of each blade 13 and cover plate 12 Angle between axis represents with α, and α is more than or equal to 30 ° and less than or equal to 90 °, such as α can take 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, 90 ° etc., i.e., the central axis of straight line where the length direction of the entrance point 131 of each blade 13 and cover plate 12 it Between angle can be 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, 90 ° etc., wherein during without specified otherwise, α optimal value is 65 °, Setting is processed with specific reference to actual conditions, α value will be understood by those skilled in the art.Pass through Angle α between straight line and the central axis of cover plate 12 where the length direction of the entrance point 131 of each blade 13 is limited Within above range, loss of the fluid in blade path can be reduced, is conducive to improving the efficiency of blade 13, and can be small Expand efficient working range under traffic conditions, and then improve the service behaviour of impeller 100.

Preferably, the entrance point 131 of each blade 13 is respectively formed as outstanding smooth curved surface, i.e., each blade 13 Entrance point 131 form round and smooth curved surface respectively, and the outwardly protrusion relative to cover plate 12 at entrance point 131 is prolonged Stretch, be conducive to reducing fluid flow resistance and abrasion.

Wherein, the internal pressure face of the entrance point 131 of each blade 13 is spill, the port of export 132 of each blade 13 Pressure face is convex, and the working face spill length of each blade 13 accounts for the 0.15-0.4 of the whole length of blade 13.

That is, the windward side of the entrance point 131 of each blade 13 is internal pressure face, windward side is formed as spill, The windward side of the port of export 132 of each blade 13 is pressure face, and the windward side of the position is formed as convex, the work of each blade 13 The proportion for making face spill length and the length of whole blade 13 is the working face of for example each blade 13 between 0.15 to 0.4 The ratio of spill length and the length of whole blade 13 can be 0.16,0.18,0.20,0.25,0.27,0.30,0.33,0.35, 0.37th, 0.39 etc., for each blade 13 working face spill length account for the whole length of blade 13 ratio selection for this The technical staff in field will be understood by, good appearance, and the working face spill length of each blade 13 is grown with whole blade 13 The different proportion of degree forms the blade 13 of different distorted shapes respectively, and the working face spill length of each blade 13 is accounted for into whole leaf The limited proportion of piece 13 can improve the flow behavior of fluid, and then lift the workability of impeller 100 within above range Energy.

In addition, the thickness of blade 13, the thinnest part thickness of blade 13 is the 0.5-0.8 of thickness thickness, each blade The thickness of 13 different parts is unequal.

Specifically, each thinnest part thickness of blade 13 account for thickness thickness proportion be 0.5 to 0.8 between, for example The thinnest part thickness of blade 13 is that thickness thickness can be 0.55,0.60,0.65,0.70,0.75 etc., can be according to impeller 100 Actual conditions chosen, the ratio of the thinnest part thickness of blade 13 and thickness thickness is to know for those skilled in the art Dawn.Thus, rationally set by the thickness to blade 13 in diverse location, can both ensure the structural strength of blade 13, again The weight of blade 13 can be reduced as much as possible, be advantageously implemented the lightweight of blower fan.

Advantageously, the width of blade 13 is gradually reduced from entrance point 131 to the place direction of the port of export 132, and blade 13 is most Small width is the 0.3-0.6 of the Breadth Maximum of blade 13.

That is, blade 13 gradually subtracts from the top of cover plate 12 to the width on direction of the periphery of cover plate 12 along extension It is small, i.e., it is being gradually reduced along from entrance point 131 to the width of the bearing of trend blade 13 of the port of export 132, blade 13 is in outlet The width at 132 is held to be less than the width at entrance point 131, width of the blade 13 at entrance point 131 is maximum, in the port of export 132 The width at place is minimum, and the proportion of the minimum widith of blade 13 and the Breadth Maximum of blade 13 is blade between 0.3 to 0.6 The ratio of 13 minimum widith and the Breadth Maximum of blade 13 is between 0.3 to 0.6, the minimum widith and blade of such as blade 13 The ratio of 13 Breadth Maximum can be 0.35,0.40,0.45,0.50,0.55, wherein preferentially choosing 0.48, i.e., without special Demand when, the minimum widith of blade 13 accounts for the ratio of Breadth Maximum, and to choose 0.48 be optimal, and blade 13 is at entrance point 131 Width ratio at width and the port of export 132 similarly for it will be appreciated by those skilled in the art that.By entering to each blade 13 The design of row different in width, while the structural strength and service behaviour of blade 13 is ensured, can mitigate the weight of blade 13, And then reduce the weight of whole blower fan.

Alternatively, the number of blade 13 is 5-10, i.e., compartment of terrain is disposed with 5 to 10 on the outer surface of cover plate 12 Blade 13, has 5,6,7,8,9 or 10 blades 13 such as on the surface of cover plate 12, clever according to progress is actually needed Living to set, preferably the number of blade 13 is 6, and these blades 13 are equably arranged on the surface of cover plate 12, good appearance, it is ensured that leaf The service behaviour of wheel 100.

Preferably, blade 13 is integrally formed with cover plate 12 and wheel hub 11, thus, and integrally formed structure can not only ensure The properity stability of impeller 100, and be conveniently molded, be simple to manufacture, and eliminate unnecessary assembly parts and connection Process, substantially increases the efficiency of assembling of impeller 100, it is ensured that the connection reliability of impeller 100, furthermore, integrally formed structure Bulk strength and stability it is higher, assembling is more convenient, and the life-span is longer.

The impeller 100 of the utility model embodiment is described with reference to specific embodiment.

As depicted in figs. 1 and 2, wheel hub 11, cover plate 12 and multiple leaves are included according to the impeller 100 of the utility model embodiment Piece 13.

Wherein, the connecting portion being connected with drive device is provided with wheel hub 11, cover plate 12 is arranged in the periphery of wheel hub 11, Cover plate 12 is formed as by the cone of the upper end of wheel hub 11 to lower end, and the upper end of cover plate 12 is set close to central axis, cover plate 12 Lower end extends along the direction away from central axis.

It is evenly spaced apart to be provided with multiple blades 13 on cover plate 12, each blade 13 has entrance point 131 and gone out respectively Mouth end 132, inducer arranges that the port of export 132 is set away from central axis, and each blade 13 is by entrance point close to central axis 131 form smooth curved surface and width is less and less respectively to the port of export 132, and the pressure face at entrance point 131 is formed as convex, Pressure face at the port of export 132 is formed as spill.

In addition, the entrance point 131 of each blade 13 is in tilted layout with central axis, the rotation of the port of export 132 and impeller 100 Direction is obliquely installed, each several part thickness on each blade 13.

It should be noted that i represents that fluid flows into the direction of impeller 100 in Fig. 3, o represents that fluid flows out the side of impeller 100 To, rotated by the effect impeller 100 of drive device, fluid by impeller 100 import flow into (such as Fig. 3 arrow Shown in direction), under the high speed rotation of impeller 100, fluid is exported because centrifugal action is reached by the entrance point 131 of blade 13 End 132, and impeller 100 is flowed out, it is in tilted layout by entrance point 131 and the central axis of blade 13, the port of export 132 and impeller 100 direction of rotation is obliquely installed, and when fluid passes through the entrance point 131 and the port of export 132 of blade 13, efficiently reduces stream Fluid loss of the body at entrance point 131 and the port of export 132.

The impeller 100 can be used in blower fan, specifically, and the connecting portion of wheel hub 11 is connected with the transmission system of drive device Connect, rotated by the effect impeller 100 of drive device, and cover plate 12 along the circumference of wheel hub 11 radially away from center line Side extended, the import of multiple twisted blades 13 is in tilted layout with central axis respectively, and the port of export 132 is to direction of rotation Certain angle is tilted, the impeller 100 can effectively reduce fluid loss during stream socket, effectively expand impeller 100 in rill Efficient working range in the case of amount.

The utility model is related to fluid conveying machine field, is more particularly related to be applied to dust catcher or smoke extractor A kind of mixed-flow impeller for having efficient, working range larger.

Thus, it is many by being arranged at intervals on the circumferential surface of cover plate 12 according to the impeller 100 of the utility model embodiment Individual blade 13, the entrance point 131 of each blade 13 arranges that the port of export 132 is away from cover plate 12 close to the central axis of cover plate 12 Central axis is arranged, also, the direction of rotation of the port of export 132 towards the impeller 100 of each blade 13 is obliquely installed, can be effectively Reduce the fluid loss of the port of export 132, effectively expand efficient working range of the impeller 100 in the case of low discharge, significantly Ground improves the service behaviour of impeller 100, expands the application of impeller 100.The impeller 100 it is simple in construction, can reduce Fluid loss, increase efficient working range, favorable working performance.

According to the impeller 100 of the utility model embodiment other constitute and operate for this area ordinary skill people It is knowable for member, is not described in detail herein.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than indicate or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be Mechanically connect or electrically connect or can communicate each other；Can be joined directly together, the indirect phase of intermediary can also be passed through Even, can be two element internals connection or two elements interaction relationship, unless otherwise clear and definite restriction.For this For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area Technical staff the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification can be entered Row is combined and combined.

Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Claims (10)

1. a kind of impeller, it is characterised in that including：

The connecting portion for being suitable to be connected with drive device is provided with wheel hub, the wheel hub, the wheel hub formation vertically extends It is cylindric, the wheel hub is internally formed along its axially extending hollow chamber；

Cover plate, the cover plate is located on the outer peripheral face of the wheel hub, and the cover plate is from one end of the wheel hub to the other end in footpath Upward size, which gradually increases, is shaped generally as cone；

Multiple blades, multiple blades are uniformly located on the outer surface of the cover plate along circumferentially-spaced open of the cover plate, often One end of central axis of the individual blade adjacent to the cover plate is entrance point, each center of the blade away from the cover plate One end of axis is the port of export, and the port of export of each blade is tilted towards the direction of rotation of the impeller.

2. impeller according to claim 1, it is characterised in that the imagination where the port of export of each blade is straight Angle between the axis of line and the cover plate is β, 0≤β≤60 °.

3. impeller according to claim 1, it is characterised in that the entrance point of each blade is relative to the lid The axis of plate is obliquely installed.

4. impeller according to claim 3, it is characterised in that the imagination where the entrance point of each blade is straight Angle between the axis of line and the cover plate is α, 30 °≤α≤90 °.

5. impeller according to claim 1, it is characterised in that the entrance point of each blade be respectively formed as to The smooth curved surface of outer protrusion.

6. impeller according to claim 1, it is characterised in that the internal pressure face of the entrance point of each blade For spill, the pressure face of the port of export of each blade is convex, and the working face spill length of each blade is accounted for The 0.15-0.4 of the whole length of blade.

7. impeller according to claim 1, it is characterised in that the thickness of the blade, the blade thinnest part is thick Spend for the 0.5-0.8 of thickness thickness.

8. impeller according to claim 1, it is characterised in that the width of the blade is from the entrance point to the outlet Direction where end is gradually reduced, and the minimum widith of the blade is the 0.3-0.6 of the Breadth Maximum of the blade.

9. impeller according to claim 1, it is characterised in that the number of the blade is 5-10.

10. impeller according to claim 1, it is characterised in that the blade and the cover plate and wheel hub one into Type.