CN106015037B - Impeller and pressure fan - Google Patents
Impeller and pressure fan Download PDFInfo
- Publication number
- CN106015037B CN106015037B CN201610045735.5A CN201610045735A CN106015037B CN 106015037 B CN106015037 B CN 106015037B CN 201610045735 A CN201610045735 A CN 201610045735A CN 106015037 B CN106015037 B CN 106015037B
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- Prior art keywords
- impeller
- flank
- downside
- upside
- axis
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to impeller and pressure fan.Impeller is directly or indirectly fixed on the axis centered on the central axis vertically extended, and can be rotated around central axis together with axis, and impeller has：The boss portion for being fixed on axis and axially extending；Impeller bodies portion sagging to downside and surrounding boss portion in the circumferential while being radially expanded from the end of the upside of boss portion；Multiple blade parts positioned at the surface of the upside in impeller bodies portion；And positioned at impeller bodies portion downside surface flank.In end on observation, the front side end of the end of the direction of rotation front side as flank is from radially inner side towards radial outside to direction of rotation rear lateral bend.
Description
Technical field
The present invention relates to impeller and pressure fan.
Background technology
In the past, about the pressure fan of impeller, there are a kind of pressure fan of the impeller using ester moulding.For example, by day
In impeller disclosed in this tekiaki 59-85499 bulletins, in order to inhibit using ester moulding impeller when it is generated deformation,
I.e. so-called contraction makes the inside of hub portion become cavity.
Make as above-mentioned impeller hub portion inside be cavity when, since the thickness of hub portion becomes smaller, hub portion
Strength reduction.The risk of hub portion deformation when there is rotation as a result,.In this regard, in the above documents, being set in the cavity of hub portion
It is equipped with ribs.
When the impeller with ribs being placed in pressure fan as described above, there are the cavitys that air enters hub portion
The case where.At this moment, there is a situation where to generate turbulent flow between the ribs of cavity.There is the sky for being applied to impeller as a result,
The pressure of gas increases, to make the increased risk of shaft power of impeller rotation.As a result, there are the reductions of the air supply efficiency of impeller
Risk.
Invention content
In view of the above problems, the first purpose of one embodiment of the present invention is to provide one kind and is imitated with that can inhibit to blow
The impeller for the structure that rate reduces and the pressure fan with such impeller.
The impeller of one embodiment of the present invention is directly or indirectly fixed on to vertically extend
Axis centered on central axis, and the impeller that can be rotated around central axis together with axis.Impeller has：Boss portion, impeller
Main part, multiple blade parts and flank.Boss portion is fixed in axis and axially extends.Impeller bodies portion is from boss portion
It is sagging to downside while the end of upside radially expands, and circumferentially surrounding boss portion.Multiple blade parts are located at impeller master
The surface of the upside in body portion.Flank is located at the surface of the downside in impeller bodies portion.In end on observation, the rotation side as flank
The front side end of the end of side is from radially inner side towards radial outside to direction of rotation rear lateral bend forwards.
Flank is connect with boss portion.
Impeller has multiple flanks.The number of flank is different from the number of blade part.
The end of the radial outside of flank is located at the radially outer edge in impeller bodies portion.
In end on observation, the rear side end of the end of the direction of rotation rear side as flank is from radially inner side direction
Radial outside to rear swivel lateral bend.
Size between the front side end and rear side end of flank is impartial.
In end on observation, the rear side end of the end of the direction of rotation rear side as flank is linear.
In end on observation, flank intersects with blade part.
In end on observation, blade part is from radially inner side towards radial outside to direction of rotation rear lateral bend.
The curvature of flank and the curvature of blade part are different.
The axial size of flank is end of the position that is connect with boss portion of impeller bodies portion with the downside in impeller bodies portion
More than half of the distance of axial direction between portion.
The axial size of flank is equal to the downside of position that impeller bodies portion is connect with boss portion with impeller bodies portion
End between axial distance.
Impeller has multiple flanks.Multiple flanks circumferentially equably configure.
Pressure fan has above-mentioned impeller, motor and casing.Motor has axis, and impeller is made to be rotated around central axis.Machine
Shell accommodates impeller.
According to an embodiment of the present invention, provide it is a kind of have can inhibit air supply efficiency reduce structure impeller,
And the pressure fan with such impeller.
With reference to attached drawing and by below to the detailed description of the preferred embodiment of the present invention, it is of the invention above-mentioned and its
His feature, element, step, features and advantages can become more fully apparent.
Description of the drawings
Fig. 1 is the stereogram for the centrifugal fan for showing present embodiment.
Fig. 2 is the exploded perspective view for the centrifugal fan for showing present embodiment.
Fig. 3 is the figure for the centrifugal fan for showing present embodiment, is III-III sectional view in Fig. 1.
Fig. 4 is the stereogram for the impeller for showing present embodiment.
Fig. 5 is the upward view for the impeller for showing present embodiment.
Fig. 6 is the upward view for another impeller for being shown as present embodiment.
Specific implementation mode
Hereinafter, with reference to attached drawing to involved by presently filed embodiment impeller and pressure fan illustrate.Below
In embodiment, an example as pressure fan illustrates centrifugal fan.
In addition, scope of the present application is not limited to the following embodiments and the accompanying drawings, it can be in the technological thought range of the present invention
Inside arbitrarily change.Also, in the accompanying drawings, in order to will be readily understood that each structure, existing makes the engineer's scale in each structure and number
Value etc. and the engineer's scale and the different situation such as numerical value in actual structure.
In the accompanying drawings, suitably it is shown as the XYZ coordinate system of three-dimensional cartesian coordinate system.In XYZ coordinate system, Z axis side
To for the direction parallel with the axial direction of central axis J shown in FIG. 1.X-direction is the direction orthogonal with Z-direction, Er Qiewei
The direction orthogonal with exhaust outlet 62 shown in FIG. 1.Y direction is the side orthogonal with X-direction and the two directions of Z-direction
To.
In the following description, it regard the extending direction (Z-direction) of central axis J as upper and lower directions.Just by Z-direction
Side (sides+Z) be known as " upside ", by the negative side (sides-Z) of Z-direction be known as " downside ".In addition, upper and lower directions, upside
And downside is not merely to the title for illustrating and using, limits actual position relationship and direction.Also, it be not beforehand with
When special instruction, the direction (Z-direction) parallel with central axis J is referred to as " axial direction ", it will be centered on central axis J
It is radial to be referred to as " radial direction ", by centered on central axis J circumferential direction (directions θ z), be referred to as around the direction of central axis J
" circumferential direction ".
In addition, in the present specification, " axially extending " refer to other than the case where including strictly axially extending,
Further include along the case where inclined direction extends in the range of with axial direction at less than 45 degree.In the present specification, " radially prolong
Stretch " refer to other than the case where including extending along stringent radial direction, i.e. with axially vertical direction, further include along with radial direction
At the case where inclined direction extends in the range of less than 45 degree.
Fig. 1 is the stereogram for the centrifugal fan 10 for showing present embodiment.Fig. 2 is the centrifugal fan 10 of present embodiment
Exploded perspective view.Fig. 3 is III-III sectional view of centrifugal fan in Fig. 1.Fig. 3 is in direction (the X-axis side orthogonal with exhaust outlet 62
To) sectional view of centrifugal fan 10 observed.That is, III-III shown in when Fig. 3 is directed towards the arrow direction observation of lead-out wire
Sectional view.
Centrifugal fan 10 is pressure fan.As shown in Figure 1 to Figure 3, centrifugal fan 10 has casing 20, impeller 30 and motor
40。
As shown in figure 3, motor 40 is contained in casing 20.Motor 40 is located at the radially inner side of aftermentioned motor cover portion 27.Horse
There is the axis 41 centered on the central axis J vertically extended up to 40.The end of the upside of axis 41 is via aftermentioned defeated
Shaft outlet hole 27a is prominent to the upside of motor cover portion 27.
Motor 40 is configured at the downside of impeller 30.Motor 40 makes impeller 30 be rotated around central axis J.In the preferred implementation side
In formula, from upside towards from downside, motor 40 makes (directions+θ z) rotation counterclockwise of impeller 30.
In addition, in the following description, there are following situations：Will from upside towards from downside along advanced side counterclockwise (+θ z
Side) it is known as direction of rotation front side, and will be from upside towards claiming along (directions-θ z) advanced side (sides-θ z) clockwise from downside
For direction of rotation rear side.
Casing 20 has upside casing 21 and downside casing 22.That is, constituting casing 20 by two seperated component connections.Machine
Shell 20 accommodates impeller 30 and motor 40.
Upside casing 21 accommodates impeller 30 in radially inner side.Upside casing 21 has upside casing cover portion 23 and upside casing
Wall portion 24.
Upside casing cover portion 23 is located at the upside of impeller 30.That is, upside casing cover portion 23 and impeller 30 are in axial overlap.On
Side casing cover portion 23 has air entry 61.Air entry 61 is axially through upside casing cover portion 23.
Upside casing cover portion 23 has the cover inner edge portion 23a extended from the inner edge of air entry 61 to downside.Cover inner edge portion 23a
For tubular.The end of the downside of cover inner edge portion 23a is located at the radially inner side of the inner edge 33a of guard section 33.Air entry 61 and impeller
30 inside is connected to via the inside of cover inner edge portion 23a.
Upside casing cover portion 23 along the aftermentioned guard section 33 of impeller 30 shape in radial expansion.Upside casing cover portion 23
Shape for the shape for being located at downside from radially inner side towards radial outside.In other words, upside casing cover portion 23 has
Flexure plane or relative to the inclined inclined surface central axis J.
Upside casing wall portion 24 is connect with the end of the downside of upside casing cover portion 23.Upside casing wall portion 24 is located at impeller
30 radial outside.Upside casing wall portion 24 surrounds impeller 30 in the circumferential.
Downside casing 22 is installed on the downside of upside casing 21.Downside casing 22 has motor cover portion 27, downside casing bottom
Portion 28, downside casing wall portion 26 and closure 29.
Motor cover portion 27 is the tubular for having lid in lower opening.Motor 40 is configured in the radially inner side of motor cover portion 27.
Motor cover portion 27 covers motor 40.Motor cover portion 27 has the output shaft hole 27a for penetrating through the cap of motor cover portion 27 in axial direction.
Impeller 30 is located at the upside of motor cover portion 27.Downside bottom of shell 28 is from the end of the downside of motor cover portion 27 to diameter
Extend outward.Downside casing wall portion 26 extends from the end of the radial outside of downside bottom of shell 28 to upside.Downside casing
The axial position of the end of the upside of wall portion 26 is identical as the axial position of the upper surface of motor cover portion 27.
Casing 20 has air entry 61, flow path 50 and exhaust outlet 62.Air entry 61 is in upper side opening and to be connected to casing
The hole of 20 outside and the inside of casing 20.Air entry 61 is located at the upside of impeller 30.As depicted in figs. 1 and 2, suction when vertical view
The shape of the edge of gas port 61 is the circle centered on central axis J.In addition, the shape of edge of air entry when overlooking and unlimited
It is set to circle, is not particularly limited.
As shown in figure 3, flow path 50 is set to the inside of casing 20.Flow path 50 connects air entry 61 and exhaust outlet 62.Flow path
50 be, for example, vortex shape.Flow path 50 has upside flow path 51 and downside flow path 52.That is, upside flow path 51 and downside flow path 52 are for example
For vortex shape.
Herein, " vortex shape " refers to the shape that preceding and then radial dimension becomes larger in the circumferential." flow path is to be vortexed
Shape " refer to include the case where at least one party in upside flow path and downside flow path is vortex shape.That is, " flow path is vortex shape " refers to
Including the case where only upside flow path is vortex shape；The case where only downside flow path is vortex shape；And upside flow path and downside flow path
The case where this two side is vortex shape.
Upside flow path 51 and downside flow path 52 configure in an axial direction.Downside flow path 52 is located at the downside of upside flow path 51.Downside
Flow path 52 is connect with upside flow path 51.In the present embodiment, the boundary of upside flow path 51 and downside flow path 52 is upside casing
21 with the boundary of downside casing 22.
In the preferred embodiment, the inside for being integrally located at upside casing 21 of upside flow path 51.That is, upside casing 21
Entirety with upside flow path 51.At least part of upside flow path 51 is radially positioned upper side wall portion inner peripheral surface 24a and leaf
Between wheel 30.
Although not shown, still upside flow path 51 is ring-type.Upside flow path 51 extends along the inner peripheral surface of casing 20.From
Impeller 30 is flowed into the air of upside flow path 51 in the upside flow path 51 to identical the direction (+θ z in the direction that is rotated with impeller 30
Direction) flowing.The entirety of upside flow path 51 is in lower opening.A part for the air flowed in flow path 51 in upside is in the row of arrival
Downside flow path 52 is flowed into during gas port 62.
As shown in Fig. 2, the inside for being integrally located at downside casing 22 of downside flow path 52.That is, downside casing 22 has downside
The entirety of flow path 52.Downside flow path 52 is located between the peripheral surface and the inner peripheral surface of casing 20 of motor cover portion 27.
Downside flow path 52 extends along the inner peripheral surface of casing 20.The air of downside flow path 52 is flowed under from upside flow path 51
It is flowed along direction identical with 30 direction of rotation of impeller (directions+θ z) in effluent road 52.Circumferential one end (+θ of downside flow path 52
The end of the sides z) it is open in exhaust outlet 62.The circumferential other end (end of the sides-θ z) of downside flow path 52 is relative to exhaust outlet 62
And it is closed.
In the case that in downside, circumferential one end of flow path is closed, as long as one end closure of downside flow path is in the circumferential
It can.That is, even if in the case where circumferential one end of downside flow path is closed, circumferential one end of downside flow path can also be upper
Side opening.
Exhaust outlet 62 is located at the position that radial outside is leaned on than impeller 30.In the preferred embodiment, exhaust outlet 62 with
Axial orthogonal direction (X-direction) opening.As shown in Figure 1, exhaust outlet 62 connect with downside casing 22 by upside casing 21 and
It constitutes.Exhaust outlet 62 is connect with upside flow path 51 and downside flow path 52.
In figure 3, the flowing of air is indicated with block arrow.As shown in figure 3, when motor 40 makes impeller 30 rotate, air warp
The inside of casing 20 is flowed by air entry 61.Flow into inside of the air via impeller 30 of the inside of casing 20, i.e. aftermentioned shield
Between cover portion 33 and impeller bodies portion 31, sent out to the radial outside of impeller 30.The air of radial outside is passed out to from impeller 30
External discharge via upside flow path 51 and downside flow path 52 from from exhaust outlet 62 to casing 20.
Impeller 30 is configured at the upside of motor 40.Impeller 30 is fixed on the end of the upside of axis 41.Impeller 30 can as a result,
It is rotated together around central axis J (directions ± θ z) with axis 41.
Fig. 4 is the stereogram for showing impeller 30.Fig. 5 is the upward view for showing impeller 30.In addition, in the present specification, facing upward
View refers to the figure observed from downside towards upside.
As shown in Fig. 2, Fig. 4 and Fig. 5, impeller 30 has boss portion 34, impeller bodies portion 31, multiple blade parts 32, shield
Cover portion 33 and flank 35.In the present embodiment, impeller 30 is single component.In the present embodiment, impeller 30 is by resin
It is made.
As shown in figure 3, boss portion 34 axially extends.Boss portion 34 has the chimeric hole portion 34a in lower opening.Embedding
Close the end that hole portion 34a is fitted into the upside of axis 41.Boss portion 34 is fixed on axis 41 as a result,.That is, impeller 30 is straight by boss portion 34
Ground connection is fixed on axis 41.
Impeller bodies portion 31 is sagging to downside while radially extension from the end of the upside of boss portion 34.Impeller bodies
Portion 31 is umbrella.In other words, impeller bodies portion 31 has flexure plane or relative to the inclined inclined surface central axis J.Such as Fig. 3
Shown in Fig. 4, impeller bodies portion 31 is circumferentially surrounding boss portion 34.Radially inner side in impeller bodies portion 31 has cavity AH.
Cavity AH is the space surrounded by impeller bodies portion 31 and boss portion 34.
As shown in figure 3, impeller bodies portion 31 has：For the main part upper surface on the surface of the upside in impeller bodies portion 31
31a；And for impeller bodies portion 31 downside surface main body lower surface 31b.Main part upper surface 31a is with therefrom
Soft inclined-planes of the mandrel line J towards radial outside and positioned at downside.
Main body lower surface 31b is connect in the end of radially inner side with boss portion 34.Main body lower surface 31b be with from
Soft inclined-plane of the radially inner side towards radial outside and positioned at downside.Main body lower surface 31b copies main part upper surface
31a.Main body lower surface 31b and main part upper surface 31a are substantially parallel.The thickness in impeller bodies portion 31 is substantially impartial.
Blade part 32 is located at main part upper surface 31a.Blade part 32 extends from main part upper surface 31a to upside.Blade
The end of the upside in portion 32 is connect with guard section 33.As shown in figure 5, multiple blade parts 32 circumferentially equably configure.From axial direction
When observation, blade part 32 extends deviously on the 31a of main part upper surface.In the illustration of Fig. 5, there are one bent for the tool of blade part 32
Rate.
The end of the radial outside of blade part 32 is located at the radially outer edge of main part upper surface 31a.The radial direction of blade part 32
The end of inside is located at the position that radially inner side is leaned on than the radially outer edge in impeller bodies portion 31.In end on observation, blade part 32
It towards radial outside is bent from radially inner side to direction of rotation rear side (sides-θ z).It therefore, can when impeller 30 rotates
Reduce the pressure for the air for being applied to blade part 32.Thereby, it is possible to reduce the shaft power of the generation of motor 40.
The thickness L5 of blade part 32 is substantially uniform.Therefore, when manufacturing blade part 32 by using resin injection molding,
It can inhibit the generation shunk.
Blade part 32 has multiple first blade part 32a and multiple second blade part 32b.First blade part 32a and second
Blade part 32b circumferentially and is alternately configured.The end of the radially inner side of first blade part 32a is located at than the second blade part 32b
Radially inner side end lean on radially inner side position.
In Figure 5, blade part 32 is respectively provided with five the first blade part 32a and five the second blade part 32b.That is, in Fig. 5
In, the number of blade part 32 is, for example, ten.In addition, the number of blade part 32 is not limited to above-mentioned number.
As shown in figure 3, guard section 33 is located at the upside of blade part 32.Guard section 33 passes through blade part 32 and impeller bodies portion
31 connections.As shown in Fig. 2, guard section 33 is the annular shape centered on central axis J.The shape of guard section 33 is with from diameter
Inwardly towards the shape to radial outside and positioned at downside.
As shown in figure 4, flank 35 is located at main body lower surface 31b.Flank 35 is located in cavity AH.In the preferred implementation side
In formula, flank 35 is connect with boss portion 34.Therefore, it is possible to further increase the intensity in impeller bodies portion 31.
As shown in figure 5, in end on observation, flank 35 extends deviously on main body lower surface 31b.In end on observation
When, the front side end 35a of the end of the direction of rotation front side (sides+θ z) as flank 35 is outside from radially inner side towards diameter
It is bent to direction of rotation rear side (sides-θ z) to side.
It is assumed herein that the air flowed in flow path 50 flows into the axial direction of impeller 30 and motor cover portion 27 shown in Fig. 3
Gap AP the case where.The air for being flowed into gap AP is upward such as by positioned at the threaded hole of the upper surface of motor cover portion 27
Side rises, and flows into cavity AH.At this moment, multiple flanks radially radial configuration when, exist between each flank generate turbulent flow
The case where.There is following risk as a result,：The pressure increase for being applied to the air of impeller 30 becomes larger to the shaft power of motor 40,
The air supply efficiency of impeller 30 reduces.
In this regard, according to the preferred embodiment, the front side end 35a of flank 35 is to direction of rotation rear side (sides-θ z)
Bending.Therefore, air when impeller 30 rotates between flank 35 is discharged from cavity AH.Thereby, it is possible to inhibit in cavity
Turbulent flow is generated in AH, can reduce the pressure for the air for being applied to impeller 30.Therefore, it is possible to reduce the shaft power of motor 40.Its
As a result, it is possible to inhibit the reduction of air supply efficiency.
Also, the air for generating turbulent flow and being detained can be discharged out of cavity AH.Therefore, it is possible to inhibit to flow from air entry 61
Enter the loss to the air in casing 20.Thereby, it is possible to improve the air supply efficiency of centrifugal fan 10.
Since air is discharged from air AH, generate from cavity AH via gap AP and towards the air stream of flow path 50.
Therefore, it is suppressed that air flows into cavity AH via gap AP, can further suppress and generate turbulent flow in cavity AH.
Also, when flow path 50 is vortex shape, the air of flow path 50 more readily flows into gap AP, to be easy in cavity AH
Generate turbulent flow.But in the present embodiment, can inhibit to generate turbulent flow in cavity AH.
Also, when the air for flowing into cavity AH from gap AP is collided with flank 35, there is the danger for generating noise.But
In the preferred embodiment, since air can be inhibited to flow into cavity AH, air can be inhibited to be collided simultaneously with flank 35
Generate noise.
In addition, in the present specification " certain object to direction of rotation rear lateral bend " refer to include certain object as a whole to
The situation of direction of rotation rear side protrusion.That is, in the present specification, " certain object to direction of rotation rear lateral bend " is if refer to
Certain object is as a whole to if the rear side protrusion of direction of rotation, then a part for certain object both can be to direction of rotation front side
Protrusion, or linear.
In end on observation, the rear side end 35b of the end of the direction of rotation rear side (sides-θ z) as flank 35 from
Radially inner side is towards radial outside to direction of rotation rear lateral bend.That is, rear side end 35b and front side end 35a to
Same lateral bend.Therefore, it is easy to make the thickness of flank 35 impartial.
Moreover, in the preferred embodiment, the ruler between the front side end 35a and rear side end 35b of flank 35
Very little, i.e. flank 35 thickness L4 is substantially uniform.It, can when carrying out injection molding by using resin as a result, and manufacturing impeller 30
Inhibit the generation shunk.Therefore, according to the preferred embodiment, impeller 30 can be manufactured to high dimensional accuracy.
In addition, in the present specification, so-called " size of certain object is substantially uniform " preferably includes opposite Mr. Yu's object
The size ratio of average-size is the case where any position is 0.8 or more 1.2 or less left and right.
As shown in figure 5, the end of the radially inner side of flank 35 is connect with boss portion 34.The end of the radial outside of flank 35
Positioned at the radially outer edge of main body lower surface 31b.That is, the end of the radial outside of flank 35 is located at the radial direction in impeller bodies portion 31
Outer rim.Therefore, radially, the range where flank 35 can be expanded.Thus, it is easier to air be discharged out of cavity AH.
As shown in figure 3, more than half for the axial size L3 that the axial size L2 of flank 35 is cavity AH.Cavity AH
Axial size L3 refer to ends of the position P that is connect with boss portion 34 of impeller bodies portion 31 with the downside in impeller bodies portion 31
Between axial distance.Therefore, it is possible to improve the intensity in impeller bodies portion 31.Also, since flank 35 can be arranged extremely
More radial outside, therefore the air being easily drained in cavity AH.
In addition, the axial size L2 of flank 35 is axial ruler of the flank 35 in the end of the radially inner side of flank 35
It is very little.Size L2 is the maximum value of the axial size of flank 35.
In the preferred embodiment, the axial size L2 of flank 35 is identical as the axial size L3 of cavity AH.That is,
In the axial direction, flank 35 extends to the end of the downside in impeller bodies portion 31 from position P.Therefore, it is possible to further increase impeller
The intensity of main part 31.Also, it, can be into one since flank 35 can be arranged to the radially outer edge in impeller bodies portion 31
Air in step discharge cavity AH.
Also, more than half for the axial size L1 that the axial size L2 of flank 35 is impeller bodies portion 31.Therefore,
It can ensure the intensity in impeller bodies portion 31.
As shown in figure 5, impeller 30 has multiple flanks 35.Therefore, it is possible to further increase the intensity in impeller bodies portion 31.
Multiple flanks 35 circumferentially equably configure.Therefore, it is possible to which air equably circumferentially is being discharged out of cavity AH.
In Figure 5, the number of flank 35 is seven.In the preferred embodiment, number and the blade part 32 of flank 35
Number it is different.The number of flank 35 and the number of blade part 32 mutually concurrently there are following risk：Because of the sky being discharged by flank 35
Air-flow and the air stream being discharged by blade part 32, and impeller 30 is caused to resonate.If impeller 30 resonates, exists and axis 41 is applied
The risk of the shaft power of application of load, increase motor 40.
In this regard, according to the preferred embodiment, it, can since the number of flank 35 is different from the number of blade part 32
Impeller 30 is inhibited to resonate.As a result, the increase of the shaft power of motor 40 can be inhibited.
In end on observation, flank 35 intersects with blade part 32.Therefore, it is possible to further increase the strong of impeller bodies portion 31
Degree.In the preferred embodiment, there are one curvature for the tool of flank 35.The mutual not phase of the curvature of the curvature of flank 35 and blade part 32
Together.Therefore, in end on observation, flank 35 can intersect with blade part 32.
In addition, the present patent application is not limited to the above embodiment.The present patent application can for example use following record
Structure.In the following description, about structure identical with above description, exist bys suitably paying identical symbol etc.
The case where omitting the description.
As long as front side end 35a is bent to direction of rotation rear side (sides-θ z), then rear side end is not particularly limited
The shape of 35b.The shape of rear side end 35b for example may be structure as shown in FIG. 6.Fig. 6 is to be shown as this implementation
The upward view of another impeller 130 of mode.
As shown in fig. 6, impeller 130 has multiple flanks 135.In end on observation, before the direction of rotation as flank 135
The front side end 135a of the end of square side (sides+θ z) is from radially inner side towards radial outside to direction of rotation rear side (- θ z
Side) bending.In end on observation, the rear side end 135b of the end of the direction of rotation rear side (sides-θ z) as flank 135
It is linear.That is, shape of the flank 135 in end on observation is substantially half-oval shaped.
Therefore, it is possible to increase size, the i.e. flank between the front side end 135a of flank 135 and rear side end 135b
135 thickness L6.As a result, by the front side end 135a of bending, the air because being discharged in cavity AH can be reduced due to applied
While the air pressure of impeller 130, the intensity in impeller bodies portion 31 is further increased.
Front side end 35a can also have multiple curvature.At this moment, multiple curvature can also include following curvature：With
Front side end 35a is located at direction of rotation (directions θ z) opposite side each other as benchmark, the position of the center of curvature.Front side end
35a can also have linear part.
The number of flank 35 is not particularly limited, or six hereinafter, can also be eight or more.That is, flank 35
Number be more preferably at least more than one.The number of flank 35 can also be identical as the number of blade part 32.
The shape of multiple flanks 35 both can be all identical, can also be different.Other than flank 35, it can also set
Set the linear flank radially extended in end on observation.
Flank 35 can not also be connect with boss portion 34.In this case, flank 35 both can only with impeller bodies portion 31
Connection, flank 35 can also be connect by other part with boss portion 34.
Impeller 30 is directly or indirectly fixed on axis 41.That is, impeller 30 can also be fixed on axis 41 indirectly.
In figure 3, boss portion 34 is embedded in axis 41.But boss portion 34 can be fixed on axis 41 in any manner.Example
Such as, boss portion 34 can also be fixed on axis 41 by screw.
Blade part 32 can also have multiple curvature.The number of blade part 32 is not particularly limited.
Impeller 30 can not also have guard section 33.
Upside casing 21 can also be with the entirety of the entirety and downside flow path 52 of upside flow path 51.Casing 20 can also be by
Three or more seperated components are constituted in axially connection.Casing 20 or single component.
Flow path 50 may not be vortex shape.Motor 40 can not also be contained in casing 20.
In addition, the impeller of the present invention is not limited to centrifugal fan, it is readily applicable to that diagonal flow fan etc. is other kinds of to be sent
Wind turbine.The impeller of the present invention and the purposes of pressure fan are not particularly limited.
The structure of the above embodiment and each variation is do not generate can be appropriately combined in contradictory range.
Claims (14)
1. a kind of impeller is directly or indirectly fixed on centered on the central axis vertically extended
Axis, and the impeller can rotate together with the axis around the central axis,
The impeller is characterized in that having：
Boss portion is fixed in the axis and axially extends；
Impeller bodies portion, it is sagging to downside while being radially expanded from the end of the upside of the boss portion, and in circumferential direction
Surround the boss portion；
Multiple blade parts are located at the surface of the upside in the impeller bodies portion；And
Flank is located at the surface of the downside in the impeller bodies portion,
Radially inner side in the impeller bodies portion has cavity,
The flank position in the cavity,
In end on observation, the front side end of the end of the direction of rotation front side as the flank is from radially inner side direction
Radial outside to direction of rotation rear lateral bend.
2. impeller according to claim 1, which is characterized in that
The flank is connect with the boss portion.
3. impeller according to claim 1 or 2, which is characterized in that
The flank be provided with it is multiple,
The number of the flank is different from the number of the blade part.
4. impeller according to claim 1 or 2, which is characterized in that
The end of the radial outside of the flank is located at the radial outer rim in the impeller bodies portion.
5. impeller according to claim 1 or 2, which is characterized in that
In end on observation, the rear side end of the end of the direction of rotation rear side as the flank is from radially inner side
Towards radial outside to the rear swivel lateral bend.
6. impeller according to claim 5, which is characterized in that
Size between the front side end and the rear side end of the flank is impartial.
7. impeller according to claim 1 or 2, which is characterized in that
In end on observation, the rear side end of the end of the direction of rotation rear side as the flank is linear.
8. impeller according to claim 1 or 2, which is characterized in that
In end on observation, the flank intersects with the blade part.
9. impeller according to claim 1 or 2, which is characterized in that
In end on observation, the blade part is from radially inner side towards radial outside to direction of rotation rear lateral bend.
10. impeller according to claim 9, which is characterized in that
The curvature of the flank and the curvature of the blade part are different.
11. impeller according to claim 1 or 2, which is characterized in that
The axial size of the flank is the position that is connect with the boss portion of the impeller bodies portion with the impeller bodies
More than half of the distance of axial direction between the end of the downside in portion.
12. impeller according to claim 11, which is characterized in that
The axial size of the flank is equal to position that the impeller bodies portion is connect with the boss portion with the impeller
Axial distance between the end of the downside of main part.
13. impeller according to claim 1 or 2, which is characterized in that
The impeller has multiple flanks,
Multiple flanks circumferentially equably configure.
14. a kind of pressure fan, which is characterized in that have
Impeller described in any one of claim 1 to 13；
Motor with the axis, and makes the impeller be rotated around the central axis；And
Casing accommodates the impeller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015070177A JP2016191310A (en) | 2015-03-30 | 2015-03-30 | Blower impeller and air blower |
| JP2015-070177 | 2015-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106015037A CN106015037A (en) | 2016-10-12 |
| CN106015037B true CN106015037B (en) | 2018-11-13 |
Family
ID=55650024
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610045735.5A Active CN106015037B (en) | 2015-03-30 | 2016-01-22 | Impeller and pressure fan |
| CN201620065010.8U Expired - Fee Related CN205478411U (en) | 2015-03-30 | 2016-01-22 | Impeller and air blower |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620065010.8U Expired - Fee Related CN205478411U (en) | 2015-03-30 | 2016-01-22 | Impeller and air blower |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20160290352A1 (en) |
| EP (1) | EP3076022A1 (en) |
| JP (1) | JP2016191310A (en) |
| CN (2) | CN106015037B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016191310A (en) * | 2015-03-30 | 2016-11-10 | 日本電産株式会社 | Blower impeller and air blower |
| US20180209442A1 (en) * | 2016-06-30 | 2018-07-26 | Nidec Corporation | Blower device and cleaner |
| CN106382251A (en) * | 2016-11-23 | 2017-02-08 | 广东威灵电机制造有限公司 | Centrifugal pump and impeller for centrifugal pump |
| EP3366926B1 (en) * | 2017-02-22 | 2020-12-02 | Borgwarner Inc. | Compressor impeller with curved ribs on the back side of the backplate |
| CN117989159A (en) * | 2017-09-14 | 2024-05-07 | 台达电子工业股份有限公司 | Diagonal flow fan |
| US11053946B2 (en) * | 2017-09-14 | 2021-07-06 | Delta Electronics, Inc. | Mixed-flow fan |
| US11156224B2 (en) * | 2017-10-10 | 2021-10-26 | Tti (Macao Commercial Offshore) Limited | Backpack blower |
| CN110388333B (en) * | 2018-04-20 | 2024-05-31 | 德昌电机(深圳)有限公司 | Impeller and water pump using same |
| JP2019214961A (en) * | 2018-06-12 | 2019-12-19 | 日本電産株式会社 | Air blower |
| US11878347B2 (en) | 2018-12-27 | 2024-01-23 | Atlas Copco Airpower, Naamloze Vennootschap | Impeller and turbocompressor equipped with such impeller and method for manufacturing such an impeller |
| CN115143141A (en) | 2019-02-12 | 2022-10-04 | 日本电产株式会社 | Impeller and centrifugal fan with same |
| KR102476034B1 (en) * | 2021-01-29 | 2022-12-08 | 인하대학교 산학협력단 | Centrifugal compressor with Spiral cavity and manufacturing method thereof |
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| FR2757907B1 (en) * | 1996-12-26 | 1999-03-19 | Valeo Climatisation | CENTRIFUGAL TURBINE WHEEL, ESPECIALLY FOR A VEHICLE HEATING / VENTILATION AND / OR AIR CONDITIONING SYSTEM |
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- 2016-01-07 US US14/990,265 patent/US20160290352A1/en not_active Abandoned
- 2016-01-22 CN CN201610045735.5A patent/CN106015037B/en active Active
- 2016-01-22 CN CN201620065010.8U patent/CN205478411U/en not_active Expired - Fee Related
- 2016-02-10 EP EP16155019.9A patent/EP3076022A1/en not_active Withdrawn
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| CN1800587A (en) * | 2004-12-29 | 2006-07-12 | 卡特彼勒公司 | Free-form welded power system component |
| JP2006249943A (en) * | 2005-03-08 | 2006-09-21 | Honda Motor Co Ltd | Centrifugal impeller |
| CN102803739A (en) * | 2009-06-08 | 2012-11-28 | 曼柴油机和涡轮机欧洲股份公司 | Compressor impeller |
| CN205478411U (en) * | 2015-03-30 | 2016-08-17 | 日本电产株式会社 | Impeller and air blower |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016191310A (en) | 2016-11-10 |
| CN205478411U (en) | 2016-08-17 |
| CN106015037A (en) | 2016-10-12 |
| EP3076022A1 (en) | 2016-10-05 |
| US20160290352A1 (en) | 2016-10-06 |
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