CN101021220B - Axial flow fan and housing for the same - Google Patents
Axial flow fan and housing for the same Download PDFInfo
- Publication number
- CN101021220B CN101021220B CN2007100791629A CN200710079162A CN101021220B CN 101021220 B CN101021220 B CN 101021220B CN 2007100791629 A CN2007100791629 A CN 2007100791629A CN 200710079162 A CN200710079162 A CN 200710079162A CN 101021220 B CN101021220 B CN 101021220B
- Authority
- CN
- China
- Prior art keywords
- rib
- shell
- axial flow
- flow fan
- central axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
- F04D29/526—Details of the casing section radially opposing blade tips
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An axial flow fan includes a housing that is formed by a process including injection molding includes a tapered surface at a frame portion thereof. One end of at least one rib is connected to an attachment portion which is a part of a stator portion of a motor portion, and the other end the rib is connected to a base portion protruding from the tapered surface. Two inclined surfaces connected to the tapered surface at the base portion and arranged in a circumferential direction with respect to a central axis are inclined such that the further a portion of the inclined surface from the centralaxis is, the further the portion is from a center of the rib. As a result, an air flow disturbance generated by the base portion between the rib and the frame portion is minimized, thereby reducing anoise generated due to the air flow disturbance.
Description
Technical field
The present invention relates to a kind of shell that is used for axial flow fan, this shell forms by comprising injection molding operation, and the present invention relates more specifically to a kind of axial flow fan that utilizes above-mentioned shell.
Background technique
Traditionally, use cooling fan to come the inside of cooling electronic components or the particular elements in the electronic unit such as axial flow fan.This axial flow fan comprises: the motor part comprises with predetermined central axis being the impeller of center rotation in this motor part; And shell, described motor part branch is arranged in this shell.Described shell comprises frame part, this frame part surround described motor part around and be the center with described central axis.In this frame part, the stationary part of motor is mounted near the mounting portion (should note: this mounting portion can be the part of described stationary part) one of them axial end that is positioned at frame part.This mounting portion is fixed to described frame part by a plurality of ribs, and described a plurality of ribs extend towards the internal surface of described frame part along the direction perpendicular to described central axis.Generally speaking, in the fan such as said fans, frame part, mounting portion and a plurality of rib form in the one mode by comprising injection molding operation, to reduce the manufacture cost of fan.
And, in recent years, in order to improve the cooling effectiveness of axial flow fan, the part place that makes rib be connected to described frame part on inner peripheral surface forms conical surface, wherein, the distance between this conical surface and the described central axis reduces gradually and continuously towards described inner peripheral surface middle section in the axial direction.But owing to be used to form the suffered structural limitations of die assembly of described shell, such shell is formed with from the outstanding base portion of described conical surface.Usually, described shell has along the base portion of circumferential width greater than rib.
Summary of the invention
[the problem to be solved in the present invention]
In recent years, the demand to the noise free electronic equipment constantly increases.Because this demand also needs to be used in the quiet cooling fan in this electronic equipment.But, on its shell, having in the axial flow fan of conical surface, the air-flow that rotation produced by impeller may be disturbed by the base portion in the frame part.And, because interference in air flow can produce noise when fan running.
Consider the problems referred to above, the objective of the invention is to be reduced in and have the noise that produces by interference in air flow with in the axial flow fan of lower casing, in this shell by comprising that injection molding operation is formed with conical surface.
According to the present invention, a kind of axial flow fan is provided, in this axial flow fan, have a shell, thereby the interference in air flow that this shell can be used for suppressing in the described axial flow fan reduces the noise that produces owing to this interference in air flow.The described shell that is used for described axial flow fan forms by comprising injection molding operation, and this shell comprises: mounting portion, this mounting portion are included in the stationary part of motor that inside has impeller; Frame part, this frame part is around the space that supplies the described motor of layout and coaxial with the central axis of this motor; And at least one rib that described mounting portion is connected with described frame part.The inner peripheral surface of described frame part has at least one conical surface, wherein, the reducing gradually of the distance between described central axis and the described conical surface from described conical surface with the part towards the rotor portion of described motor of the contacted part of described at least one rib to this conical surface.Described frame part comprises at least one base portion, and described base portion links to each other with described at least one rib, and outstanding from described at least one conical surface.Described base portion is in itself and the contacted part of described rib on the both sides of described rib and all has a surface, and one of described surface is inclined to and makes that the part of this inclined surface is far away more apart from described central axis, and this part of this inclined surface is just far away more apart from the center line of described rib.
Description of drawings
Fig. 1 is the sectional view of axial flow fan.
Fig. 2 is the stereogram of shell.
Fig. 3 is the flat sheet of the bottom view of shell.
Fig. 4 a, 4b, 4c are the sectional views of shell.
Fig. 5 is the zoomed-in view of base portion near zone.
Fig. 6 is the stereogram of shell.
Fig. 7 is the view of expression backform tool assembly and bottom die assembly.
Fig. 8 is the stereogram of the shell of comparative example.
Fig. 9 is the flat sheet of the bottom view of the shell of comparative example.
Figure 10 is the noise-measuring result's of expression axial flow fan a chart.
Figure 11 is the noise-measuring result's of expression axial flow fan a chart.
Figure 12 is the noise-measuring result's of expression axial flow fan a chart.
Figure 13 is the view of an example of expression shell.
Figure 14 is the view of another example of expression shell.
Figure 15 is the view of an example again of expression shell.
Embodiment
According to a preferred embodiment of the invention, thus the interference in air flow in the axial flow fan is suppressed and reduces the noise that is produced by interference in air flow.Interference in air flow is to be caused by the base portion between the external frame of the rib that is arranged on shell and this shell, and described shell has conical surface and by comprising that injection molding operation forms.In the description of the preferred embodiment of the present invention here, be used to explain the position relation between the respective members and the word of direction, such as upper and lower, left and right, upwards, downwards, top and bottom, only represent that the position in the accompanying drawing concerns and direction.The position relation and the direction of the member in the physical device do not represented to be installed in these words.
[being used to realize most preferred embodiment of the present invention]
Fig. 1 is the longitudinal sectional view of axial flow fan 1 according to the preferred embodiment of the invention.Axial flow fan 1 comprises: motor part 2, and this motor part is around predetermined central axis J1 rotation; With shell 3, motor part 2 is arranged in this shell.Motor part 2 comprises rotor portion 21 and stationary part 22.Stationary part 22 is via the gear mechanism that utilizes hydraulic pressure support rotor part 21 rotatably.
And rotor portion 21 comprises impeller 215, and this impeller has the roughly cylindrical form concentric with central axis J1, and operation rotor portion 211 inserts within it.Described impeller is included in a plurality of blades 216 on its outer circumferential face and the flange portion 217 of ring-type.
In axial flow fan 1, for blow air, owing to the rotation of impeller 215 from shell 3 end vertically (for example with air, side face 323 ends) be drawn in the shell 3, air moves according to the sense of rotation of impeller 215 then, discharge from shell 3 the other end (for example, conical surface 321 ends) vertically afterwards.Owing to be formed on the conical surface 321 and the side face 323 of frame part 32 inside of axial flow fan 1, can improve the efficient of said flow.
Fig. 2 is the stereogram of expression shell 3.Fig. 3 is the flat sheet of the bottom view of expression shell 3.Fig. 4 a, 4b, 4c are the sectional views of the shell 3 seen from the line A-A shown in Fig. 3 of expression.Should understand, Fig. 2 and Fig. 3 (and following Fig. 5 that will describe, Fig. 6, Fig. 8, Fig. 9, Figure 13 and Figure 15) all show the shell 3 that 31 sides are seen from the mounting portion, and Fig. 2 and Fig. 4 a, 4b, 4c all show with respect to the axial flow fan shown in Fig. 1 and put upside down the axial flow fan seen or the part of this axial flow fan vertically.
According to Fig. 3, the shape (see figure 1) of the frame part of seeing from the end of central axis J1 32 is an essentially rectangular.It should be noted that the axial flow fan shown in Fig. 1 illustrates in the mode to angular perspective with respect to the rectangular shape of the axial flow fan shown in Fig. 3.
Similarly, as described above, frame part 32 shown in Fig. 4 a, 4b, the 4c has conical surface 321 on the surface within it, distance between this conical surface 321 and the central axis J1 reduces towards rotor portion 21 sides (that is to say, along the downward direction according to Fig. 4 a, 4b, 4c) of motor part 2 to be provided with gradually and continuously from the position that rib 33 is set.As shown in Figure 3, between conical surface 321 and the central axis J1 formed angle in the corresponding part of the mid point place minimum (for example, according to Fig. 3, this angle is almost 0) on the limit of this conical surface and rectangular shape frame part 32.
Below, with describe in detail in a plurality of ribs 33 each with frame part 32 between be connected.As shown in Figure 2, in a plurality of ribs 33 each base portion 34 is set.Rib 33 all is connected to frame part 32 by base portion 34, and this base portion is outstanding towards rib 33 from conical surface 321.The surface 341 of facing central axis J1 of each base portion 34 (hereinafter, the surface 341 is called " connecting surface 341 ") equal central side face 322 in the optional given position of this connections surperficial 341 and central axis J1 distance apart and (should note apart from the distance of central axis J1, in Fig. 2, has only a base portion 34) with indication.And, connect surface 341 and have the surface that is parallel to central side face 322 with respect to central axis J1.Should note, in shell 3, border between rib 33 and the base portion 34 equals the distance of central side face 322 apart from central axis J1 apart from the distance of central axis J1, that is to say, the part than central side face 322 more close central axis J1 of rib 33 is considered to rib 33, and the part of the more close frame part 32 of rib 33 is considered to base portion 34.
Fig. 5 is the zoomed-in view around the zone of one of them base portion 34 in the shell 3.According to Fig. 5, each rib 33 is provided with center line 331, and wherein this center line is along the direction setting of rib 33.And, in Fig. 5, represent base portion 34 with parallel oblique line.Base portion 34 is provided with along two inclined surfaces 342 (that is to say this two surfaces be parallel to central side face 322 Fig. 5 shown in) of circumferential surface to central axis J1.Inclined surface 342 all is connected to conical surface 321 and is inclined to and makes that the part of this inclined surface 342 is far away more apart from center line 331, and this part is just far away more apart from central axis J1.
As shown in Figure 5, the profile of the inclined surface 342 of base portion 34 is progressive curve.More particularly, far away more apart from central axis J1, then limit the angle that forms between the tangent line of profile of inclined surface 342 and the center line 331 and just become big more.And the location of the boundary vicinity of angle (that is, θ 1 among Fig. 5 and θ 2) between inclined surface 342 and conical surface 321 that forms between inclined surface 342 and the conical surface 321 is an acute angle, so that inclined surface 342 is continuously level and smooth with conical surface 321.Because said structure, each rib 33 all is connected to frame part 32 reliably by base portion 34.
Then, will be described in the manufacture process of shell 3, forming base portion 34 below.It should be noted that in order to represent the formation of base portion 34 effectively, slightly different among the position in base portion 34 shell 3 shown in Figure 6 and Fig. 2 and Fig. 3, still, the shell 3 among Fig. 6 is made in the mode identical with shell 3 among Fig. 2 and Fig. 3.
Make by resin material and by utilizing predetermined die assembly injection moulding to make according to the shell 3 of present embodiment.Fig. 7 is the backform tool assembly 91 of inboard, a plurality of rib 33 and mounting portion 31 of the expression frame part 32 that is used to form shell 3 and the view of bottom die assembly 92.It should be noted that in Fig. 7, omitted reference character with the not directly related element of the formation of the base portion 34 of shell 3.In Fig. 7, the base portion 342a that the zone represented by parallel oblique line in backform tool assembly 91 911 is represented by parallel oblique line in corresponding to Fig. 6; And the connection surface 341 that the zone represented by parallel oblique line in bottom die assembly 92 921 is represented by parallel oblique line in corresponding to Fig. 6.
According to the manufacture method of shell shown in Figure 63, backform tool assembly 91 and bottom die assembly 92 are bonded together and are placed in the interior space of another die assembly, and this another die assembly is used to form the outside of frame part 32.Resin material is expelled in the space that forms between above-mentioned backform tool assembly 91 and the bottom die assembly 92.After the resin material hardening by cooling, separate the die assembly that is used to form frame part 32 outsides.Make backform tool assembly 91 and bottom die assembly 92 along axially separated from one another then.Formed shell 3 when like this, forming the inboard (for example, conical surface 321, central side face 322, side face and base portion 34), a plurality of rib 33 of frame part and mounting portion 31 at the same time.The joint line that it should be noted that in shell 3 and form between backform tool assembly 91 and bottom die assembly 92 is such line, and this line limits conical surface 321 and the central side face 322 except the part that is provided with base portion 34.It shall yet further be noted that as the shape from the zone 921 of the bottom die assembly 92 shown in Fig. 7 clearly as can be known, the cross section of each rib 33 in the shell 3 is triangular shaped.
Below, how the base portion of describing in the shell 3 with reference to Fig. 6 and Fig. 7 34 forms.When forming shell 3,, backform tool assembly 91 and bottom die assembly 92 forming a plurality of ribs 33 in the space that produces by being fitted together vertically by injection moulding.Owing to adopt this method,, treat to form by backform tool assembly 91 than central side face 322 more outward extending conical surfaces 321 for they being separated by backform tool assembly 91 and bottom die assembly 92 are removed vertically mutually.But, conical surface 321, the part between rib 33 and central side face 322 (below be referred to as focus section (focus portion)) is because rib 33 and can not being formed by backform tool assembly 91.Therefore, need form this focus section by the part of bottom die assembly 92.When bottom die assembly 92 forms with central axis J1 at a distance of the central side face 322 of intended distance, also form apart from the focus section of central axis J1 equidistance and (that is to say, distance between central authorities' side face 322 and the central axis J1 equals the distance between focus section and the central axis J1), therefore, as the result of this manufacture method, formed the base portion of giving prominence to from conical surface 321 34.
On the other hand, precondition is: the surface that contact with another surface of each has predetermined size and size in two die assemblies, with the endurance of the connection between maintenance backform tool assembly and the bottom die assembly.Therefore, for backform tool assembly 91 and bottom die assembly 92, the part 923 (hereinafter referred to as " rib forms part 923 ": only indicate a rib among Fig. 7 and form part 923) that will form rib 33 in its of bottom die assembly 92 has two contact surfaces 922 (being represented by parallel oblique line) in Fig. 7, have predetermined width between these two contact surfaces, and backform tool assembly 91 has and these rib formation part 923 corresponding parts.Because rib forms the outer end face that faces of part 923, that is, be used for forming the zone 921 that connects surface 341 at base portion 34 places, connecting surface 341 can be upwards the same wide with zone 921 in week.That is to say, this face outer end face week upwards than the wide width that goes out two contact surfaces 922 of rib 33.
Should be understood that under actual conditions bottom die assembly 92 is configured to make the diameter of central side face 322 to reduce a little and continuously towards conical surface 321.Because this structure after finishing injection moulding, can make bottom die assembly 92 separate effectively with backform tool assembly 91.
Below, will the conventional enclosure that form and can compare with the shell 3 of present embodiment by injection moulding be described.Fig. 8 is a stereogram for the treatment of the shell 8 of comparing with shell 3.Fig. 9 is the flat sheet of the bottom view of shell 8.The internal surface of the frame part 82 of shell 8 has conical surface 821, and this conical surface increases towards the position that is provided with a plurality of ribs 83 from central side face 822 (being equivalent to central side face 322) gradually and continuously apart from the distance of central axis J2.And, because shell 8 forms by comprising injection molding operation, therefore can be formed for the base portion 84 of each rib 83.But the base portion 84 of shell 8 contacts with the conical surface 821 of frame part 82, and base portion 84 has two surfaces that are parallel to each other simultaneously, and these two surfaces upwards are being clipped in the middle central axis J2 and are being parallel to center line 831 (see figure 9)s in week.
Hereinafter, the measurement result that inside is had a noise that the axial flow fan 1 of shell 3 produced compares with inner measurement result with noise that axial flow fan produced of shell 8.Here, the motor of each axial flow fan part is with the 3200rpm rotation and have the impeller that has 7 blades, so the frequency of occurrences is 373Hz (3200/60) * 7) first order component.
Figure 10 shows the measurement result of the noise that is produced when inner axial flow fan 1 with shell 3 is driven.Figure 11 shows the measurement result of the noise that is produced when inner axial flow fan with shell 8 is driven.Figure 12 shows the guide wire of alternative shape of Figure 10 and Figure 11, is used to describe the particular range of frequency.In Figure 12, represent the measurement result of axial flow fan 1 with reference character 71, represent to have the measurement result of other axial flow fan of shell 8 with reference character 72.
According to Figure 12, the loud pressure reduction between 71 and 72 is different roughly to appear at two order components (746Hz) and three order components (1119Hz) are located.The noise level of acoustic pressure with axial flow fan 1 of shell 3 is 22.4dB (A), and the noise level of acoustic pressure with axial flow fan of shell 8 is 23.0dB (A).That is to say that the axial flow fan 1 with shell 3 is compared acoustic pressure and reduced 0.6dB (A) with the axial flow fan with shell 8
As mentioned above, the shell 3 of axial flow fan is formed by die assembly by comprising injection molding operation.Shell 3 has frame part 32, is provided with base portion 34 in this frame section office for each rib 33, and described rib is used for fixing described mounting portion 31 by base portion 34.And each rib 33 all has pair of angled surface 342, this to inclined surface apart from the distance of central axis J1 along with the increase of the part of inclined surface 342 and the distance between the central axis 331 and increase.By this structure, the axial flow fan 1 of present embodiment (having in this axial flow fan by comprising that injection molding operation forms and comprise in it shell 3 of at least one conical surface) has improved cooling effectiveness.And the axial flow fan 1 that has shell 3 in it of the present invention can be used for suppressing the interference in air flow that caused by the base portion 34 that is arranged between rib 33 and the frame part 32, thereby reduces the noise that produces owing to this interference in air flow.
Figure 13 is the flat sheet of the bottom view of the shell 3 of another preferred embodiment according to the present invention.The frame part 32 of the shell 3 among Figure 13 is essentially rectangular when seeing vertically.In Figure 13, conical surface 321 is provided with regional 321a (hereinafter referred to as " specific conical surface 321a ").This specific conical surface 321a is the part of the most close frame part 32 of conical surface 321, wherein by central axis J1 and this formed angle of specific conical surface less than by central axis J1 and conical surface 321 formed angles, and the distance between central axis J1 and the specific conical surface 321a than between the remaining part of central axis J1 and conical surface 321 apart from lacking.
According to shell shown in Figure 13 3, the base portion 34 that is positioned at specific conical surface 321a top vertically is set for each rib 33.Base portion 34 is arranged to make each rib 33 to be connected with frame part 32.By this structure, the height of base portion 34 (that is the distance between conical surface 321 and the central axis J1) is low when understanding than the location when base portion 34 being arranged on above being positioned at specific conical surface 321a vertically.Therefore, as shown in figure 13 by comprising that shell 3 that injection molding operation forms can be used for suppressing the interference in air flow that is caused by base portion 34, thereby reduce the noise that produces by this interference in air flow.
Figure 14 is the flat sheet of the bottom view of the another example of shell.Figure 14 represents the guide wire of alternative shape in the another example of shell, and rib 33 and base portion 34 are connected to each other at this part place.It should be noted that in Figure 14, base portion 34 is shown with the parallel lines that tilt.
According to Figure 14, the rib 33 of shell 3 and frame part 32 interconnective location therein, the width of rib 33 increases gradually towards shell 3, and the inclined surface 342 of the surface of rib 33 and base portion 34 is connected.And, according to the sectional drawing of shell 3, form the curve that rib 33 is connected by base portion 34 with conical surface 321.Like this,, can reduce interference in air flow by the central axis J1 side generation of the base portion in the shell shown in Fig. 33 34 according to current embodiment's of the present invention axial flow fan 1, thus the noise that inhibition produces owing to this interference in air flow.It should be noted that owing to form the used die assembly of the shell 3 shown in Figure 14 constructing, thereby in order to reduce the manufacture cost of die assembly, the shell 3 shown in Fig. 3 can be preferred than forming the shell 3 used more complicated modes shown in Fig. 3.Be also noted that rib 33 shown in Figure 14 and base portion 34 can be applicable to the shell 3 shown in Figure 13.
Though described the preferred embodiments of the present invention in detail, top explanation is in all respects all for schematic and unrestricted.Should be understood that in the case without departing from the scope of the present invention, can design multiple other distortion and modification.
For example, though according to the shell 3 that is formed with inclined surface 342 in it, can suppress noise by the interference in air flow generation, but the shell 8 of the comparative example shown in Fig. 9 can have pair of angled surface (hereinafter referred to as " given shape (specific aspect) "), and this forms by grinding base portion 84 inclined surface and is provided with along circumferential with respect to central axis J2.Described given shape is to make base portion 84 contact with conical surface 821, and the part of described given shape is far away more apart from central axis J2, and this part is just far away more apart from center line 831.
And, when forming inclined surface 342 on one of them given shape at base portion 34, interference in air flow can be suppressed to a certain degree.That is to say that at least one that focuses in described two given shapes comprises inclined surface 342.It should be noted that when having only one to comprise inclined surface 342 in the given shape of each rib 33 given shape that focuses on being provided with should comprise inclined surface 342 on the same side with respect to each rib 33, thereby reduce interference in air flow.
In addition, it should be noted that to achieve these goals that described given shape has only certain part to can be used as inclined surface 342.More particularly, preferably described inclined surface is arranged on the part place that is connected with rib 33 of described given shape.And, in order when described inclined surface is provided with as mentioned above, to suppress interference in air flow effectively, preferably, if described given shape extends (as shown in Figure 9) along the identical direction of the direction of extending with rib 33, then half the zone that is equivalent to this given shape of this given shape will be inclined surface.
Be noted that in shell 3, described inclined surface can be taked Any shape, as long as this inclined surface is shaped so that the part of this inclined surface is far away more apart from central axis J1, then apart from the center line of rib 33 far away getting final product more just.But, in order to suppress the interference in air flow in the axial flow fan 1, inclined surface 342 must form and make that the part of this inclined surface 342 is far away more apart from central axis J1, then the angle that forms between the center line of inclined surface 342 and rib 33 is just big more, and when when an axial end is seen, the edge of inclined surface 342 forms curve.
In addition, divide 222 stationary part 22 though have the mounting portion 31 and the sleeve retaining that comprise as a seamless part according to the axial flow fan 1 of Fig. 1, yet this sleeve retaining divide 222 and mounting portion 31 can form independently of each other, wherein mounting portion 31 is mounted to stationary part 22.
In addition, though according to the shell 3 of Figure 13 when when an axial end is seen, having rectangular shape, the frame part of this shell can be taked arbitrary shape.For example, described framework can be the circular shape, and wherein the part of this framework comprises straight line.When described frame part was the circular shape, the part that forms minimum angle with respect to central axis J1 of the internal surface of this frame part can be specific conical surface, can on this specific conical surface described base portion be set vertically.By this structure, can suppress the interference in air flow that produces by described base portion.
In addition, it should be noted that in shell 3 that the rib 33 that frame part 32 is connected to mounting portion 31 need not extend perpendicular to central axis J1.Rib 33 can tilt with respect to axial vertical line.
Claims (8)
1. axial flow fan with shell, this shell is by comprising injection molding operation and form and comprising:
Mounting portion, this mounting portion are included in the stationary part of motor that inside has impeller;
Frame part, this frame part is around the space that supplies the described motor of layout and coaxial with the central axis of this motor; And
The rib that at least one makes described mounting portion be connected with described frame part, wherein
The inner peripheral surface of described frame part has at least one conical surface, distance between wherein said central axis and the described conical surface reduces with the part towards the rotor portion of described motor of the contacted part of described at least one rib to this conical surface gradually from described conical surface
Described frame part comprises at least one base portion, and described base portion links to each other with described at least one rib, and outstanding from described at least one conical surface,
Described base portion is in the part that itself and described ribbed joint touch on the both sides of described at least one rib and all has a surface, and one of described surface is inclined to and makes that the part of this inclined surface is far away more apart from described central axis, and this part of this inclined surface is just far away more apart from the center line of described rib.
2. the axial flow fan with shell according to claim 1 is characterized in that,
Described surface tilt on the both sides of described at least one rib becomes: the part of each described inclined surface is far away more apart from described central axis, and this part of this inclined surface is just far away more apart from the described center line of described rib.
3. the axial flow fan with shell according to claim 1 and 2 is characterized in that,
Distance between the part of described inclined surface and the described central axis is far away more, and the angle that forms between this part of this inclined surface and the center line of described rib just becomes big more.
4. according to each described axial flow fan in the claim 1 to 3, it is characterized in that with shell,
Described mounting portion is fixed to described frame part by a plurality of described ribs, and
A surface on the same side of each base portion that is arranged on each rib in the every pair of described surface comprises described inclined surface.
5. according to each described axial flow fan in the claim 1 to 4, it is characterized in that described inclined surface forms by die assembly in described injection moulding with shell.
6. the axial flow fan with shell according to claim 5 is characterized in that,
The profile of described framework is such shape: when this shape when the angle that is parallel to described central axis is seen comprises a straight line, the part of close described straight line of the internal surface of described frame part is specific conical surface, distance between described central axis and this specific conical surface is shorter than the distance between the remaining part of described central axis and described conical surface, and
Described base portion is arranged on the described specific conical surface.
7. according to each described axial flow fan with shell in the claim 1 to 6, it is characterized in that at described rib and the interconnective part of described base portion place, the part of described rib is far away more apart from described central axis, described rib is just wide more.
8. axial flow fan, this axial flow fan comprises:
Shell according to each described axial flow fan in the claim 1 to 7;
The motor part, the rotor portion of this motor part comprises impeller, and the mounting portion of this motor part comprises stator in described shell.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-036448 | 2006-02-14 | ||
| JP2006036448 | 2006-02-14 | ||
| JP2006036448A JP2007218101A (en) | 2006-02-14 | 2006-02-14 | Axial fan and housing for axial fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021220A CN101021220A (en) | 2007-08-22 |
| CN101021220B true CN101021220B (en) | 2011-03-09 |
Family
ID=38368688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100791629A Expired - Fee Related CN101021220B (en) | 2006-02-14 | 2007-02-14 | Axial flow fan and housing for the same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20070189892A1 (en) |
| JP (1) | JP2007218101A (en) |
| CN (1) | CN101021220B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7541807B2 (en) * | 2007-07-19 | 2009-06-02 | Varian, Inc. | Rotor drive apparatus and methods utilizing center-fed radial-outflow gas |
| JP5361878B2 (en) | 2008-05-15 | 2013-12-04 | パナソニック株式会社 | Fan and electronic device having the same |
| JP2010216280A (en) * | 2009-03-13 | 2010-09-30 | Nippon Densan Corp | Centrifugal fan |
| JP5322900B2 (en) * | 2009-11-27 | 2013-10-23 | 三洋電機株式会社 | Bell mouth structure of blower |
| JP5739200B2 (en) * | 2010-04-20 | 2015-06-24 | 山洋電気株式会社 | Blower |
| US8502436B2 (en) | 2011-02-14 | 2013-08-06 | Regal Beloit America, Inc. | Electric motor having an end frame |
| CN104428595B (en) | 2012-07-03 | 2017-06-27 | 三菱电机株式会社 | The indoor set of air conditioner and the air conditioner with the indoor set |
| CN104854352A (en) * | 2012-08-24 | 2015-08-19 | 罗伯特·博世有限公司 | Fan shroud with complementary two-sided ribbing |
| CN103867461A (en) * | 2012-12-12 | 2014-06-18 | 富瑞精密组件（昆山）有限公司 | Cooling fan |
| JP6207870B2 (en) | 2013-04-17 | 2017-10-04 | 山洋電気株式会社 | Fan motor |
| TWI537476B (en) * | 2013-07-15 | 2016-06-11 | Sunon Electronics Foshan Co Ltd | Axial fan |
| JP6533375B2 (en) * | 2014-09-12 | 2019-06-19 | 日本電産サーボ株式会社 | Fan device |
| JP6802022B2 (en) | 2016-09-29 | 2020-12-16 | 山洋電気株式会社 | Reversible fan |
| CN108005946B (en) * | 2018-01-13 | 2023-10-27 | 广东美的环境电器制造有限公司 | Frame assembly for front casing of axial flow fan and axial flow fan casing |
| CN115264599A (en) * | 2022-08-04 | 2022-11-01 | 珠海格力电器股份有限公司 | Guiding device, fan and air conditioner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724879A (en) * | 2004-07-21 | 2006-01-25 | 台达电子工业股份有限公司 | Fan frame |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3237849A (en) * | 1964-03-09 | 1966-03-01 | Imc Magnetics Corp | Frame for electrically driven fan |
| FR2497883B1 (en) * | 1981-01-09 | 1985-12-13 | Etri Sa | FLAT TYPE AXIAL ELECTRIC FAN |
| US5135363A (en) * | 1982-11-09 | 1992-08-04 | Papst-Motoren Gmbh & Co. Kg | Miniaturized direct current fan |
| JPS59145396A (en) * | 1982-11-09 | 1984-08-20 | パプスト・モ−ト−レン・ゲ−エムベ−ハ−・ウント・コ−・カ−ゲ− | Direct current small-sized ventilator |
| US5267842A (en) * | 1982-11-09 | 1993-12-07 | Papst Licensing Gmbh | Miniaturized direct current fan |
| TW537549U (en) * | 1999-10-28 | 2003-06-11 | Delta Electronics Inc | Terminal seat |
| US6798091B2 (en) * | 2001-11-29 | 2004-09-28 | Sanyo Denki Co., Ltd. | Watertight brushless fan motor |
-
2006
- 2006-02-14 JP JP2006036448A patent/JP2007218101A/en not_active Withdrawn
-
2007
- 2007-02-13 US US11/674,396 patent/US20070189892A1/en not_active Abandoned
- 2007-02-14 CN CN2007100791629A patent/CN101021220B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724879A (en) * | 2004-07-21 | 2006-01-25 | 台达电子工业股份有限公司 | Fan frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101021220A (en) | 2007-08-22 |
| JP2007218101A (en) | 2007-08-30 |
| US20070189892A1 (en) | 2007-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101021220B (en) | Axial flow fan and housing for the same | |
| US10594186B2 (en) | Outer rotor type motor | |
| CN1318936C (en) | Centrifugal fan | |
| US5755557A (en) | Axial flow fan | |
| US9885367B2 (en) | Centrifugal fan | |
| JP5940266B2 (en) | Centrifugal fan and method of manufacturing centrifugal fan | |
| CN100504078C (en) | Axial flow fan | |
| JP6282541B2 (en) | Centrifugal fan | |
| US20070098571A1 (en) | Centrifugal fan | |
| CN204025148U (en) | Centrifugal fan | |
| US10247201B2 (en) | Blower apparatus | |
| US9568015B2 (en) | Centrifugal fan | |
| CN203297114U (en) | Axial fan | |
| US9976570B2 (en) | Blower apparatus | |
| CN103821762A (en) | Impeller and electric blower having the same | |
| JP6333102B2 (en) | Centrifugal fan | |
| US20080095623A1 (en) | Counter-rotating fan | |
| US20170117773A1 (en) | Apparatus for mounting a motor such that vibrations are decoupled | |
| JP2014015908A (en) | Blower unit | |
| US20170356464A1 (en) | Blower apparatus | |
| US10550846B2 (en) | Blower apparatus | |
| US20170356459A1 (en) | Blower apparatus | |
| US20170356466A1 (en) | Blower apparatus | |
| US20170356462A1 (en) | Blower apparatus | |
| GB2227793A (en) | Miniature axial fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20200214 |