CN206221315U - Blower fan - Google Patents

Abstract

Include the utility model discloses a kind of blower fan：Drive device, multilevel deflector device, fan housing current collector and impeller, air channel is defined in drive device, the end in air channel is formed as outlet, multilevel deflector device is located in drive device, multilevel deflector device is mainly made up of pedestal, stream guidance fan housing, multiple first helical blades and multiple second helical blades, fan housing current collector is located on multilevel deflector device, fan housing current collector has the import connected with wind chamber entrance, impeller is located between multilevel deflector device and fan housing current collector and is connected with drive device, and drive device drives wheel rotation to form air-flow.According to blower fan of the present utility model, the vortex and resistance to fluid are smaller, improve the service behaviour of blower fan, the radiating effect of blower fan is also improved, is prevented because of the too high influence blower fan work of drive device temperature, and compact conformation, the volume of blower fan is reduced, is saved and is taken up room.

Description

Blower fan

Technical field

The utility model is related to fluid conveying machine technical field, in particular to being applied to dust catcher or smoking The blower fan with multilevel deflector device of machine.

Background technology

Structure of dust collector in correlation technique, the blower fan rotation under drive device drive, forms negative in the housing of sealing Press and suck in dust collect plant so as to reach the effect of cleaning dust, during suction is formed, due to by impeller, water conservancy diversion The limitation of device, drive device temperature rise etc., rotating speed generally using diffuser is drawn fluid generally between 60000-80000rpm Enter drive device center to be radiated, air-flow is also easy to produce vortex and has larger resistance, and performance is generally low.

Utility model content

The utility model is intended at least solve one of above-mentioned technical problem to a certain extent.

Therefore, the utility model proposes a kind of blower fan, the space availability ratio of the blower fan is higher, and fluid property and radiating Better performances.

Included according to blower fan of the present utility model：Drive device, multilevel deflector device, fan housing current collector and impeller, it is described Air channel is defined in drive device, the end in the air channel is formed as outlet, and the multilevel deflector device is located at described driving and fills In putting, the multilevel deflector device is main by pedestal, stream guidance fan housing, multiple first helical blades and multiple second helical blade sets Into, the stream guidance fan housing is located on the pedestal, and the stream guidance fan housing is generally formed into annular and positioned at one end of the pedestal, Air-out chamber, the stream guidance fan housing and the pedestal are limited between the outside wall surface of the internal face of the stream guidance fan housing and the pedestal One end is spaced apart and limits air-out chamber entrance, and multiple first helical blades are opened in the seat along the circumferentially-spaced of the pedestal In the outside wall surface of body and in the wind chamber, multiple second helical blades are opened in institute along the circumferentially-spaced of the pedestal State in the outside wall surface of pedestal, second helical blade opens interlaced arrangement with first spiral spacer, each described second spiral shell One end of vane piece is located in the wind chamber, and the other end stretches out the wind chamber, two neighboring second helical blade it is another Air-out chamber outlet is limited between end, the wind chamber outlet is connected with the air channel, and the fan housing current collector is located at the multistage and leads On stream device, the fan housing current collector has the import connected with wind chamber entrance, and the impeller is located at the multilevel deflector It is connected between device and the fan housing current collector and with the drive device, the drive device drives the wheel rotation with shape Into air-flow.

According to blower fan of the present utility model, phase is set by fan housing current collector, multi-stage diffluence device and drive device Mutually the wind chamber and air channel of conducting, run fluid through from top to down through blower fan, not only ensure that the normal work of blower fan, reduce The vortex and resistance of fluid, improve the service behaviour of blower fan, also improve the radiating effect of drive device, prevent because driving The too high influence blower fan work of unit temp, and compact conformation, reduce the volume of blower fan, save and take up room.

In addition, according to blower fan of the present utility model, can also have following additional technical characteristic：

According to one embodiment of the present utility model, the fan housing current collector includes the cylindrical section and the taper that interconnect Section, the cylindrical section is formed as the import, and the conical section is connected with the multilevel deflector device.

According to one embodiment of the present utility model, the pedestal includes upper semisection and lower semisection, under the upper semisection End is connected with the upper end of the lower semisection, and the upper semisection is generally formed into the round platform that radial dimension from the top down gradually increases Shape, the lower semisection is formed as column, and first helical blade is located on the upper semisection, and the of second helical blade One end is located on the upper semisection and the other end is extended downward on the lower semisection.

According to one embodiment of the present utility model, the upper end of first helical blade and second helical blade Upper end is concordant.

According to one embodiment of the present utility model, the upper end of first helical blade and second helical blade Upper end is respectively formed as the smooth curved surface for projecting upwards.

According to one embodiment of the present utility model, multiple first helical blades and multiple second helical blades Incline direction it is identical.

According to one embodiment of the present utility model, the upper semisection is integrally formed with the lower semisection.

According to one embodiment of the present utility model, the lower semisection is provided with multiple axially extending and in the circumferential along its Locating slot arranged spaced apart.

According to one embodiment of the present utility model, first helical blade and second helical blade are respectively 9- 16.

According to one embodiment of the present utility model, the stream guidance fan housing is generally formed into semicircle dish type, the water conservancy diversion wind Cover is closely coupled with the end of first helical blade.

Additional aspect of the present utility model and advantage 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

Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined Become substantially and be readily appreciated that, wherein：

Fig. 1 is the structural representation of the blower fan according to the utility model embodiment；

Fig. 2 is the sectional view of the blower fan according to the utility model embodiment；

Fig. 3 is the explosive view of the blower fan according to the utility model embodiment；

Fig. 4 is portion's dress figure of the multilevel deflector device according to the blower fan of the utility model embodiment；

Fig. 5 is structural representation of the structure shown in Fig. 4 in another angle；

Fig. 6 is the top view of the structure shown in Fig. 4；

Fig. 7 is the upward view of the structure shown in Fig. 4；

Fig. 8 is the structural representation of the pedestal of the blower fan according to the utility model embodiment；

Fig. 9 is the top view of the structure shown in Fig. 6.

Reference：

100：Blower fan；

10：Drive device；

11：Driver；12：Air channel；13：Outlet；

20：Multilevel deflector device；

21：Pedestal；211：Upper semisection；212：Lower semisection；213：Locating slot；

22：Stream guidance fan housing；23：First helical blade；24：Second helical blade；

30：Fan housing current collector；31：Import；

40：Impeller；41：Wheel hub；42：Cover plate；43：Blade.

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng The embodiment for examining Description of Drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.

1 to accompanying drawing 9 specifically describes the blower fan 100 according to the utility model embodiment below in conjunction with the accompanying drawings.

Blower fan 100 according to the utility model embodiment includes drive device 10, multilevel deflector device 20, fan housing current collector 30 and impeller 40, air channel 12 is defined in drive device 10, the end in air channel 12 is formed as outlet 13, and multilevel deflector device 20 sets In drive device 10, multilevel deflector device 20 is main by pedestal 21, stream guidance fan housing 22, multiple first helical blades 23 and multiple Second helical blade 24 is constituted, and pedestal 21 is generally formed into column.

Stream guidance fan housing 22 is located on pedestal 21, and stream guidance fan housing 22 is generally formed into annular and positioned at one end of pedestal 21, leads Air-out chamber (not shown), stream guidance fan housing 22 and the one of pedestal 21 are limited between the internal face and the outside wall surface of pedestal 21 that flow fan housing 22 End is spaced apart and limits air-out chamber entrance (not shown), and multiple first helical blades 23 are opened in pedestal along the circumferentially-spaced of pedestal 21 In 21 outside wall surface and in wind chamber, multiple second helical blades 24 are opened in the outer of pedestal 21 along the circumferentially-spaced of pedestal 21 On wall, the second helical blade 24 and the first spiral spacer open interlaced arrangement, and one end of each the second helical blade 24 is located at wind In chamber, the other end stretches air-out chamber, and air-out chamber outlet (not shown) is limited between the other end of two neighboring second helical blade 24, The outlet of wind chamber is connected with air channel 12, and fan housing current collector 30 is located on multilevel deflector device 20, and fan housing current collector 30 has and wind chamber Entrance connection import 31, impeller 40 be located between multilevel deflector device 20 and fan housing current collector 30 and with the phase of drive device 10 Even, drive device 10 drives impeller 40 to rotate to form air-flow.

In other words, blower fan 100 is main by 40 groups of drive device 10, multilevel deflector device 20, fan housing current collector 30 and impeller Into the bottom of blower fan 100 is provided with drive device 10, and the top of drive device 10 connects multilevel deflector device 20, multilevel deflector dress The top for putting 20 connects fan housing current collector 30, and fan housing current collector 30 is interior to be provided with impeller 40.

Wherein, the inner chamber of drive device 10 is provided with air channel 12, air channel 12 and is provided with driver 11, and the bottom in air channel 12 is provided with Outlet 13, the top in air channel 12 and the inner space of multilevel deflector device 20, annular wind chamber, wind are provided with multilevel deflector device 20 The lower end in chamber is exported by wind chamber and is connected with air channel 12, and the top in wind chamber is connected by wind chamber entrance with the inner chamber of fan housing current collector 30 It is logical, and impeller 40 is provided between fan housing current collector 30 and multilevel deflector device 20, impeller 40 is by drive shaft (not shown) and drive Dynamic device 10 is connected, and drive device 10 is rotated by drive shaft impeller 40.

Further, multilevel deflector device 20 is main by pedestal 21, stream guidance fan housing 22, multiple first helical blades 23 and many Individual second helical blade 24 is constituted, as shown in figure 1, the lower section of multilevel deflector device 20 is provided with drive device 10, drive device 10 with Be connected by pedestal 21 between multilevel deflector device 20, the top of pedestal 21 is covered with stream guidance fan housing 22, stream guidance fan housing 22 it is interior Air-out chamber is limited between the outer wall of wall and pedestal 21, multiple first helical blades 23 and multiple second helical-blades are provided with wind chamber Piece 24, the first helical blade 23 and the second helical blade 24 along pedestal 21 circumferentially-spaced arrangement, and the first helical blade 23 with Second helical blade 24 alternates setting, and distinguished and admirable fan housing current collector 30 enters air-inlet chamber entrance, is exported by wind chamber by wind chamber Into the air channel 12 of the inner chamber of drive device 10, then flowed out by outlet 13.

Blower fan 100 according to the utility model embodiment, fills by fan housing current collector 30, multi-stage diffluence device and driving The wind chamber and air channel 12 that mutual conduction is set in 10 are put, is run fluid through from top to down through blower fan 100, not only ensure that wind The normal work of machine 100, reduces the vortex and resistance of fluid, improves the service behaviour of blower fan 100, also improves driving dress 10 radiating effect is put, prevents from being worked because of the too high influence blower fan 100 of the temperature of drive device 10, and compact conformation, reduce wind The volume of machine 100, saves and takes up room.

Alternatively, fan housing current collector 30 includes the cylindrical section and conical section that interconnect, and cylindrical section is formed as import 31, bores Shape section is connected with multilevel deflector device 20.

As shown in Figures 2 and 3, fan housing current collector 30 is mainly made up of cylindrical section and conical section, and cylindrical section and conical section divide Vertically (above-below direction as shown in Figure 2) does not extend, bottom (lower end as shown in Figure 2) and the conical section of cylindrical section Top (upper end as shown in Figure 2) is connected, and the outside dimension of cylindrical section bottom is equal with the outside dimension on conical section top, circle The inner chamber of shell of column and the inner space of conical section, are provided with import 31 at the top of cylindrical section, bottom and the multilevel deflector of conical section are filled The top for putting 20 is connected, and conical section is uniform with multilevel deflector device 20 excessively.

Thus, by setting fan housing current collector 30 between import 31 and multilevel deflector device 20, it is advantageously implemented import It is uniform excessive between 31 and wind chamber, so as to for the installation of impeller 40 provides space with rotation, effectively reduce blower fan 100 at a high speed Windage during rotation, improves the service behaviour of blower fan 100, prevents the leakage of fluid, is ensureing stream into the same of blower fan 100 When, the volume of blower fan 100 is reduced, the structure design of blower fan 100 is optimized, save taking up room for blower fan 100.

Wherein, pedestal 21 includes upper semisection 211 and lower semisection 212, the lower end of upper semisection 211 and the upper end of lower semisection 212 It is connected, it is round table-like that upper semisection 211 is generally formed into that radial dimension from the top down gradually increases, and lower semisection 212 is formed as column, First helical blade 23 is located on upper semisection 211, the first end of the second helical blade 24 be located on upper semisection 211 and the other end to Under extend on lower semisection 212.

Specifically, pedestal 21 is made up of the upper semisection 211 and lower semisection 212 arranging along the vertical direction and be connected, upper half Section 211 is generally formed into frustum cone structure, and the radial dimension of frustum cone structure gradually increases from top to bottom, that is to say, that upper semisection 211 Two sides of the vertical sectional shape for vertically intercepting are formed along the axial arranged curve of pedestal 21, and lower semisection 212 is circle Rod structure, and radial dimension is equal, that is, form uiform section column structure, the top of upper semisection 211 and the bottom phase of lower semisection 212 Even.

Wherein, the first helical blade 23 is arranged in the outside wall surface of upper semisection 211, and along upper semisection 211 outer wall towards Lower extension, is provided with the second helical blade 24 between two neighboring first helical blade 23, the second helical blade 24 is from upper semisection 211 Top down extend to the bottom of lower semisection 212, and upper semisection 211 the first helical blade 23 and the second helical blade 24 Alternate intervals are arranged.

Pedestal 21 is continuously increased the sectional area in wind chamber by the mutual cooperation between upper semisection 211 and lower semisection 212, and Using the length difference between the first helical blade 23 and the second helical blade 24, the shape in wind chamber is limited, increased fluid process Path during wind chamber, so as to reduce fluid vortex and windage, is advantageously implemented rotating speed high, vacuum and Wind Volume, improves The service behaviour of multilevel deflector device 20.

Advantageously, the upper end of the first helical blade 23 is concordant with the upper end of the second helical blade 24, i.e. the first helical blade 23 upper end is equal apart from the distance of the central shaft of pedestal 21 with the upper end of the second helical blade 24.

Thus, the upper end of the first helical blade 23 is concordant with the upper end of the second helical blade 24 is set, it is ensured that wind chamber entrance Locate the symmetry of structure, when being circulated through wind chamber entrance and entering air-inlet chamber, the first helical blade 23 and the can be evenly distributed to In fluid passage between two helical blades 24, the structure design of wind chamber porch is optimized, prevented because fluid distribution is uneven The work of influence multilevel deflector device 20, it is ensured that the job stability of multilevel deflector device 20.

Further, the upper end of the upper end of the first helical blade 23 and the second helical blade 24 is respectively formed as projecting upwards Smooth curved surface.

That is, the upper surface of the first helical blade 23 and the second helical blade 24 is smooth curved surface, smooth curved surface Both sides connect two sides of the first helical blade 23 or the second helical blade 24, for plane, smooth curved surface respectively Resistance to fluid is smaller.

Wherein, the circle for projecting upwards is set by the upper end of the upper end of the first helical blade 23 and the second helical blade 24 Sliding curved surface, can reduce by 20 pairs of resistances by fluid of multilevel deflector device, it is ensured that fluid smoothly enters inlet air by wind chamber entrance Chamber, improve fluid by speed.

It should be noted that multiple first helical blades 23 are identical with the incline direction of multiple second helical blades 24.

Specifically, as shown in Figure 8 and Figure 9, multiple first helical blades 23 and multiple the are set on the upper semisection 211 of pedestal 21 The top half of two helical blades 24, and the first helical blade 23 and the second helical blade 24 are both with respect to the radius of correspondence position Place imaginary line is in tilted layout, also, the first helical blade 23 and the second helical blade 24 are relative to where corresponding radius Straight line incline direction it is consistent.

Thus, the incline direction of the first helical blade 23 and the second helical blade 24 is arranged to angularly, one can be entered Step reduces resistance of the helical blade to fluid, reduces the vortex of fluid, so as to farthest increase multilevel deflector device 20 Water conservancy diversion effect, and then improve the radiating effect of drive device 10.

Preferably, upper semisection 211 is integrally formed with lower semisection 212.For example, upper semisection 211 was being produced with lower semisection 212 Cheng Zhongke forms pedestal 21 with integrated injection molding, between the two without connection gap.Thus, integrally formed structure is not only The properity stability of pedestal 21 can be ensured, and be conveniently molded, be simple to manufacture, save upper semisection 211 and lower semisection Attachment structure between 212 be connected operation, improve the efficiency of assembling of pedestal 21, and reduce the difficulty of the production of pedestal 21 will Ask, connection is reliable, furthermore, the structure bulk strength of integrally formed pedestal 21 and stability are higher, easy to assembly, service life compared with It is long, reduce production and safeguard production.

Alternatively, lower semisection 212 is provided with multiple axially extending along its and is circumferentially spaced the locating slot of arrangement 213。

As shown in figure 5, the bottom of lower semisection 212 is provided with multiple locating slots 213, multiple locating slots 213 are along lower semisection 212 It is circumferentially-spaced to open arrangement, wherein, locating slot 213 runs through the side wall of lower semisection 212 along the radial direction of lower semisection 212, and fixed Position groove 213 is arranged between adjacent second helical blade 24.

Locating slot 213 is set by the bottom of lower semisection 212, clamping is coordinated using locating slot 213 and drive device 10, On the one hand the connective stability of pedestal 21 and drive device 10 is improve, is prevented because mutually wrong between pedestal 21 and drive device 10 Dynamic influence multilevel deflector device 20 is normal, on the other hand, increased the contact area between pedestal 21 and drive device 10, so that Increased the radiating effect of drive device 10.

It should be noted that the first helical blade 23 and the second helical blade 24 are integrally formed with pedestal 21 respectively.

For example, the first helical blade 23 and the second helical blade 24 in process of production can with the integrated injection molding of pedestal 21 into Type, forms between overall structure, and the first helical blade 23 and the second helical blade 24 and pedestal 21 in the absence of company with pedestal 21 Seam gap.Thus, integrally formed structure can not only ensure the helical blade 23 of pedestal 21 and first and the second helical blade 24 Properity stability, and be conveniently molded, be simple to manufacture, save the first helical blade 23 and the second helical blade 24 With the attachment structure and Joining Technology between pedestal 21, the efficiency of assembling of pedestal 21 is improve, furthermore, integrally formed structure Bulk strength and stability are higher, easy to assembly, reduce production cost.

Alternatively, the first helical blade 23 and the second helical blade 24 are respectively 9-16.In other words, the first helical blade 23 is equal with the number of the second helical blade 24, and the number of the first helical blade 23 or the second helical blade 24 is limited in 9-16 Can be respectively 9 between individual, can be respectively 12, it is also possible to be respectively 16, when the number of the first helical blade 23 is Effect preferably, on the one hand can improve the service behaviour of multilevel deflector device 20 at 12, prevent the first helical blade 23 and the The quantity of two helical blades 24 it is excessive or it is very few influence fluid water conservancy diversion effect, on the other hand optimize multilevel deflector device 20 Structure design, reduces production cost.

Advantageously, stream guidance fan housing 22 is generally formed into semicircle dish type, the end of the helical blade 23 of stream guidance fan housing 22 and first It is closely coupled.

As shown in figure 4, stream guidance fan housing 22 is generally formed into the unlimited hemispherical dome structure in top, and stream guidance fan housing 22 top End face and bottom end face are arranged in parallel, wherein, the top of stream guidance fan housing 22 forms position loop configuration, the top of stream guidance fan housing 22 it is interior Footpath size is roughly equal apart from the length dimension of the central shaft of pedestal 21 with the first helical blade 23, the internal diameter of the bottom of stream guidance fan housing 22 Size is substantially equal apart from the length dimension of the central shaft of pedestal 21 with the bottom of the second helical blade 24.

Thus, ensure it is distinguished and admirable by wind chamber enter drive device 10 on the premise of, improve multilevel deflector device 20 Sealing, prevents because the outside of helical blade and the internal face of stream guidance fan housing 22 are apart from excessive influence water conservancy diversion effect, so as to reduce The windage in wind chamber and vortex, increased the radiating effect of drive device 10.

Additionally, impeller 40 includes wheel hub 41, cover plate 42 and multiple blades 43.

Specifically, wheel hub 41 substantially forms the post that vertically (above-below direction as shown in Figures 2 and 3) extends The connecting portion for being suitable to be connected with drive device 10 is provided with shape, wheel hub 41, cover plate 42 is located on the outer peripheral face of wheel hub 41, cover plate 42 From one end of wheel hub 41 to the other end, diametrically size gradually increases and is shaped generally as coniform, and multiple blades 43 are along cover plate 42 It is circumferential arranged in vortex shape, i.e., multiple blades 43 are spaced apart and are uniformly arranged throughout on the outer surface of cover plate 42, each blade 43 One end of the central axis of neighbouring cover plate 42 is entrance point, and each blade 43 is outlet away from one end of the central axis of cover plate 42 End, the entrance point of each blade 43 is obliquely installed relative to the axis of cover plate 42.

In other words, the impeller 40 is main is made up of wheel hub 41, cover plate 42 and multiple blades 43, and the wheel hub 41 of impeller 40 is in circle Column, hollow chamber is internally formed in wheel hub 41, and the chamber forms the connecting portion being connected with drive device 10, cover plate 42 It is connected with wheel hub 41, cover plate 42 is arranged on the outer peripheral face of wheel hub 41, cover plate 42 is formed along upper end to the lower end of wheel hub 41 It is that the radial dimension of the upper end central axis of cover plate 42 (neighbouring) of the cone that radial dimension gradually increases, i.e. cover plate 42 is less than The radial dimension of the lower end of cover plate 42 (away from the central axis of cover plate 42), cover plate 42 is generally conical in the periphery of wheel hub 41.

Additionally, uniform intervals are disposed with multiple blades 43 in the circumferential exterior surface of cover plate 42, each blade 43 approximately along Radially extending for cover plate 42, i.e. one end of each blade 43 positioned at the upper end of cover plate 42, the other end of each blade 43 is located at The lower end of cover plate 42, the entrance point of each blade 43 is set near the axial centerline of cover plate 42, the outlet of each blade 43 The position of the central axis away from cover plate 42 is held to set, i.e., the entrance point of each blade 43 is located at the upper end of cover plate 42, the port of export Positioned at the lower end of cover plate 42, and the entrance point of each blade 43 is in tilted layout with the central axis of cover plate 42.

Specifically, wheel hub 41 is connected with drive device 10, is rotated by the effect impeller 40 of drive device 10, lid Plate 42 extends along the excircle radial direction of wheel hub 41 away from the side of the central axis of cover plate 42, is disposed with cover plate 42 many Individual blade 43, the entrance point of each blade 43 is obliquely installed.

Thus, the impeller 40 according to the utility model embodiment, by the circumferential surface of cover plate 42 interval setting it is many Individual blade 43, the entrance point of each blade 43 is close to the central axis arrangement of cover plate 42, central shaft of the port of export away from cover plate 42 Line is arranged, also, the entrance point of each blade 43 is obliquely installed with the central axis of cover plate 42, and the simple structure of impeller 40 can Effectively reduce the fluid loss of entrance point, effectively expand efficient working range of the impeller 40 in the case of low discharge, greatly The earth improves the service behaviour of impeller 40, expands the range of application of impeller 40.The simple structure of the impeller 40, stream can be reduced Bulk diffusion, increase efficient working range, favorable working performance.

Alternatively, where the entrance point of each blade 43 angle between imaginary line and the axis of cover plate 42 is α, 30°≤α≤90°。

That is, straight line where the length direction of the entrance point of each blade 43 and between the central axis of cover plate 42 Angle represent that more than or equal to 30 ° and less than or equal to 90 °, such as α can take 30 °, 40 °, 50 °, 70 °, 80 °, 90 ° to α with α Deng that is, the angle between the central axis of the straight line where the length direction of the entrance point of each blade 43 and cover plate 42 can be 30 °, 40 °, 50 °, 70 °, 80 °, 90 ° etc., setting, the skill of the value for this area of α are processed with specific reference to actual conditions Be will be understood by for art personnel.

In this application, the port of export of each blade 43 is inclined towards the direction of rotation of impeller 40, it is to be understood that every The incline direction of the port of export of individual blade 43 is consistent with the direction of rotation of impeller 40, such fluid by each blade 43 the port of export When out, flowed out along the direction of rotation of each blade 43, the loss of port of export fluid is reduced, when impeller 40 is in low discharge feelings When being worked under condition, the efficient working range of impeller 40 is wider.

Preferably, where the port of export of each blade 43 angle between imaginary line and the axis of cover plate 42 is β, 0 ≤ β≤60 °, in other words, the central axis of straight line where the length direction of the port of export of each blade 43 and cover plate 42 it Between angle represented with β, β more than or equal to 0 ° and less than or equal to 60 °, for example, β can take 35 °, 40 °, 45 °, 50 °, 55 °, Angle between 60 ° etc., the i.e. central axis of the straight line where the length direction of the port of export of each blade 43 and cover plate 42 can Think 35 °, 40 °, 45 °, 50 °, 55 °, 60 ° etc., specifically, setting, the value pair of β can be processed according to actual conditions Be will be understood by for those skilled in the art.

Advantageously, the entrance point of each blade 43 is respectively formed as smooth curved surface outwardly, i.e. each blade 43 Entrance point forms round and smooth curved surface respectively, and extends relative to the outwardly prominent of cover plate 42 at entrance point, is conducive to Reduce fluid flow resistance and abrasion.

Preferably, the internal pressure face of the entrance point of each blade 43 is spill, the pressure of the port of export of each blade 43 Face is convex, and the working face spill length of each blade 43 accounts for the 0.15-0.4 of the length of whole blade 43.

That is, the internal pressure face of the entrance point of each blade 43 is formed as spill, the port of export of each blade 43 Pressure face be formed as convex, the working face spill length of each blade 43 and the proportion of the length of whole blade 43 are 0.15 To between 0.4, the working face spill length of such as each blade 43 and the ratio of the length of whole blade 43 can be 0.16, 0.18th, 0.20,0.25,0.27,0.30,0.33,0.35,0.37,0.39 etc., for the working face spill length of each blade 43 The selection for accounting for the ratio of the length of whole blade 43 will be understood by for those skilled in the art, good appearance, each leaf The working face spill length of piece 43 forms the blade 43 of different distorted shapes from the different proportion of the length of whole blade 43 respectively.

Further, the thickness of blade 43, the thinnest part thickness of blade 43 is the 0.5-0.8 of thickness thickness, each The thickness of the different parts of blade 43 is unequal, and specifically, each thinnest part thickness of blade 43 accounts for the ratio model of thickness thickness Enclose between 0.5 to 0.8, such as thinnest part thickness of blade 43 be thickness thickness can for 0.55,0.60,0.65,0.70, 0.75 etc., can be chosen according to the actual conditions of impeller 40, wherein preferentially choose 0.48, i.e., when without special demand, The thinnest part thickness of blade 43 accounts for the ratio of thickness thickness, and to choose 0.48 be optimal, the thinnest part thickness of blade 43 and thickness thickness Ratio can be what is known for those skilled in the art.

Additionally, the width of blade 43 direction where from entrance point to the port of export is gradually reduced, the minimum widith of blade 43 is The 0.3-0.6 of the Breadth Maximum of blade 43, i.e., along the width of the bearing of trend blade 43 from entrance point to the port of export gradually Reduce, less than the width at entrance point, width of the blade 43 at entrance point is maximum, is going out for width of the blade 43 at the port of export Width at mouthful end is minimum, the proportion of the minimum widith of blade 43 and the Breadth Maximum of blade 43 between 0.3 to 0.6, The Breadth Maximum of blade 43 is 1.7 to 3.3 times of the minimum widith of blade 43, such as minimum widith of blade 43 and blade 43 The ratio of Breadth Maximum can be 0.35,0.40,0.45,0.50,0.55, at width of the blade 43 at entrance point and the port of export Width ratio similarly for it will be appreciated by those skilled in the art that.

In some specific examples of the present utility model, the number of blade 43 is 5-10, i.e., in the outer weekly form of cover plate 42 Compartment of terrain is disposed with 5 to 10 blades 43 on face, has 5,6,7,8,9 or 10 leaves such as on the surface of cover plate 42 Piece 43, is flexibly set according to being actually needed, and preferably the number of blade 43 is 6, and these blades 43 are equably arranged in cover plate On 42 surfaces, good appearance, it is ensured that the service behaviour of impeller 40.

Preferably, blade 43 is integrally formed with cover plate 42 and wheel hub 41, and thus, integrally formed structure can not only ensure The properity stability of impeller 40, and be conveniently molded, be simple to manufacture, and eliminate unnecessary assembly parts and connection Operation, substantially increases the efficiency of assembling of impeller 40, it is ensured that the connection reliability of impeller 40, furthermore, integrally formed structure Bulk strength and stability are higher, and assembling is more convenient, and the life-span is longer.

The course of work of the blower fan 100 according to the utility model embodiment is described with reference to specific embodiment.

It is main by drive device 10, multilevel deflector device 20, fan housing afflux according to the blower fan 100 that the utility model is implemented Device 30 and impeller 40 are constituted, and the bottom of blower fan 100 is provided with and exhaust passage 12 is limited in drive device 10, drive device 10, drives dress The top for putting 10 connects multilevel deflector device 20, and multilevel deflector device 20 is interior to be provided with pedestal 21, stream guidance fan housing 22, multiple first spiral shells Vane piece 23 and multiple second helical blades 24, limit air-out chamber, the bottom in wind chamber and wind between pedestal 21 and stream guidance fan housing 22 Road 12 is connected, and the top of multilevel deflector device 20 is provided with fan housing current collector 30, fan housing current collector 30 and multilevel deflector device 20 it Between be provided with impeller 40, impeller 40 connects drive device 10 by drive shaft.

Wherein, drive device 10 by drive shaft drive impeller 40 rotate, impeller 40 in rotary course, fan housing current collector Pressure reduction inside 30, fluid is entered the wind chamber of multistage distinguished and admirable device by the import 31 at the top of fan housing current collector 30, passed through The wind chamber outlet in wind bottom of chamber portion enters air channel 12, is flowed out by the outlet 13 of the stage of drive device 10.

Blower fan 100 according to the utility model embodiment, fills by fan housing current collector 30, multi-stage diffluence device and driving The wind chamber and air channel 12 that mutual conduction is set in 10 are put, is run fluid through from top to down through blower fan 100, not only ensure that wind The normal work of machine 100, reduces the vortex and resistance of fluid, improves the service behaviour of blower fan 100, also improves driving dress 10 radiating effect is put, prevents from being worked because of the too high influence blower fan 100 of the temperature of drive device 10, and compact conformation, reduce wind The volume of machine 100, saves and takes up room, furthermore, the simple structure of blower fan 100, each several part connection is reliable, efficiency of assembling compared with Height, reduces production cost and maintenance cost.

Other compositions of blower fan 100 according to the utility model embodiment and operation are for those of ordinary skill in the art For be all known, be not detailed 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 ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise " are based on orientation shown in the drawings or position relationship, merely to just Described with simplified in description the utility model, must be with specific side rather than the device or element for indicating or imply meaning Position, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.

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 being fixedly connected, or being detachably connected, or be integrally connected；Can Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi Two connections of element internal.For the ordinary skill in the art, above-mentioned term can as the case may be understood Concrete meaning in the utility model.

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 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 not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can be Combined in an appropriate manner in one or more any embodiments or example.

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 not departing from the utility model Principle and objective in the case of above-described embodiment can be changed in the range of the utility model, change, replace and Modification.

Claims (10)

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

Drive device, defines air channel in the drive device, the end in the air channel is formed as outlet；

Multilevel deflector device, the multilevel deflector device is located in the drive device, and the multilevel deflector device includes：

Pedestal；

Stream guidance fan housing, the stream guidance fan housing is located on the pedestal, and the stream guidance fan housing is generally formed into annular and positioned at described Air-out chamber, the stream guidance fan housing are limited between the outside wall surface of one end of pedestal, the internal face of the stream guidance fan housing and the pedestal Restriction air-out chamber entrance is spaced apart with one end of the pedestal；

Multiple first helical blades, multiple first helical blades are opened in the pedestal along the circumferentially-spaced of the pedestal In outside wall surface and in the wind chamber；

Multiple second helical blades, multiple second helical blades are opened in the pedestal along the circumferentially-spaced of the pedestal In outside wall surface, second helical blade opens interlaced arrangement with first spiral spacer, each second helical blade One end is located in the wind chamber, and the other end stretches out the wind chamber, is limited between the other end of two neighboring second helical blade Determine air-out chamber outlet, the wind chamber outlet is connected with the air channel；

Fan housing current collector, the fan housing current collector is located on the multilevel deflector device, the fan housing current collector have with it is described The import of wind chamber entrance connection；

Impeller, the impeller be located between the multilevel deflector device and the fan housing current collector and with the drive device phase Even, the drive device drives the wheel rotation to form air-flow.

2. blower fan according to claim 1, it is characterised in that the fan housing current collector include the cylindrical section for interconnecting and Conical section, the cylindrical section is formed as the import, and the conical section is connected with the multilevel deflector device.

3. blower fan according to claim 1, it is characterised in that the pedestal includes upper semisection and lower semisection, the upper half The lower end of section is connected with the upper end of the lower semisection, and the upper semisection is generally formed into what radial dimension from the top down gradually increased Round table-like, the lower semisection is formed as column, and first helical blade is located on the upper semisection, second helical blade First end be located on the upper semisection and the other end is extended downward on the lower semisection.

4. blower fan according to claim 3, it is characterised in that the upper end of first helical blade and second spiral The upper end of blade is concordant.

5. blower fan according to claim 3, it is characterised in that the upper end of first helical blade and second spiral The upper end of blade is respectively formed as the smooth curved surface for projecting upwards.

6. blower fan according to claim 3, it is characterised in that multiple first helical blades and multiple second spiral shells The incline direction of vane piece is identical.

7. blower fan according to claim 3, it is characterised in that the upper semisection is integrally formed with the lower semisection.

8. blower fan according to claim 3, it is characterised in that the lower semisection be provided with it is multiple along its it is axially extending and The circumferentially-spaced locating slot for opening arrangement.

9. blower fan according to claim 1, it is characterised in that first helical blade and second helical blade point Wei not 9-16.

10. blower fan according to claim 1, it is characterised in that the stream guidance fan housing is generally formed into semicircle dish type, described Stream guidance fan housing is closely coupled with the end of first helical blade.