CN209557337U - A kind of blower collector, centrifugal blower and air-conditioning system - Google Patents
A kind of blower collector, centrifugal blower and air-conditioning system Download PDFInfo
- Publication number
- CN209557337U CN209557337U CN201920256544.2U CN201920256544U CN209557337U CN 209557337 U CN209557337 U CN 209557337U CN 201920256544 U CN201920256544 U CN 201920256544U CN 209557337 U CN209557337 U CN 209557337U
- Authority
- CN
- China
- Prior art keywords
- blower
- windward side
- air
- collector
- protrusion
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of blower collector, centrifugal blower and air-conditioning system, is related to blower technical field, invents to provide a kind of blower collector of sound quality that can be effectively improved air intake efficiency, improve air inlet noise.Blower collector includes the windward side of ring structure, and protrusion and/or groove are formed on the windward side, and the protrusion and groove are used to disturb the laminar boundary layer on the windward side at turbulent boundary layer.The utility model blower collector, centrifugal blower and air-conditioning system are used to improve the working performance of blower collector.
Description
Technical field
The utility model relates to blower technical field more particularly to a kind of blower collectors, centrifugal blower and air-conditioning system.
Background technique
A kind of existing multi-wing centrifugal fan, referring to Fig.1, the spiral case 001 including hollow structure, spiral case 001 have air inlet
End installs blower collector 003 at air intake, installs impeller 002 in the cavity of spiral case 001, when air-flow passes through blower afflux
After device 003 enters in spiral case 001, gas is accelerated using high-speed rotating impeller 002；Wherein, blower collector 003 is multiple wing
The important component of centrifugal blower, the air intake efficiency of blower collector 003 play the performance of multi-wing centrifugal fan very important
Effect, for example, as shown in Figure 1, the windward side P1 of blower collector 003 is shiny surface, when air-flow flows through smooth windward side P1
When, air-flow can be made to form laminar boundary layer (as shown in Figure 2) on the P1 of windward side, and the thickness of laminar boundary layer is about blower collection
Device 003 radial dimension of 1%~1.5% is flowed, and then leads to the radial direction along blower collector 003, the gas in boundary layer
Stream has apparent current gradient, i.e., more close to windward side P1, air-flow velocity is smaller, and even equal to zero, thus it will affect
The air intake efficiency of blower collector 003, meanwhile, when air-flow flows through blower collector 003, blower can issue it is droning " drone " make an uproar
Sound, or sharp noise is issued, sound is not soft, influences user experience comfort level.
Utility model content
The embodiments of the present invention provide a kind of blower collector, centrifugal blower and air-conditioning system, main purpose
The air intake efficiency of blower collector is effectively improved, and improves the sound quality of air inlet noise.
In order to achieve the above objectives, the embodiments of the present invention adopt the following technical scheme that
On the one hand, the utility model embodiment provides a kind of blower collector, and the windward side including ring structure is described
Protrusion and/or groove are formed on windward side, the protrusion and the groove are used for the laminar boundary layer on the windward side
Disturb into turbulent boundary layer.
On the other hand, the utility model embodiment provides a kind of centrifugal blower, comprising:
Casing, the casing have air intake and outlet air end；
Blower collector, the blower collector are blower collector described in above-described embodiment, the blower collector
It is arranged at the air intake；
Impeller, the impeller are arranged in the casing.
On the other hand, the utility model embodiment provides a kind of air-conditioning system, including centrifugation provided by the above embodiment
Blower.
In blower collector provided by the embodiment of the utility model, centrifugal blower and air-conditioning system, due to blower collector
Windward side on be formed with protrusion and/or groove, by protrusion and/or groove can make the flow boundary layer air close to windward side because by
To flow perturbation structure interference and form turbulent boundary layer, turbulent boundary layer can reduce air-flow compared with laminar boundary layer
Resistance on windward side promotes blower collector to suck more air, and can reduce the gradient phenomenon of air-flow velocity formation,
So that air-flow, when flowing through windward side, flow velocity is more uniform, and then improve the air intake efficiency of blower collector, meanwhile, widened into
The frequency bandwidth of gas noise reduces the tone of inflow noise, the final sound quality for improving centrifugal blower.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of centrifugal blower in the prior art；
Fig. 2 is the effect of the laminar boundary layer formed when air-flow flows through on the windward side of blower collector in the prior art
Figure；
Fig. 3 is a kind of structural schematic diagram of centrifugal blower provided by the embodiment of the utility model；
Fig. 4 is the A direction view of Fig. 3；
Fig. 5 is the B-B cross-sectional view of Fig. 4；
Fig. 6 is enlarged drawing at the C of Fig. 5；
Fig. 7 is a kind of structural schematic diagram of protrusion provided by the embodiment of the utility model；
Fig. 8 is the structural schematic diagram of another centrifugal blower provided by the embodiment of the utility model；
Fig. 9 is the D direction view of Fig. 8；
Figure 10 is the structural schematic diagram of another protrusion provided by the embodiment of the utility model；
Figure 11 is the structural schematic diagram of another groove provided by the embodiment of the utility model；
Figure 12 is the structural schematic diagram of another protrusion provided by the embodiment of the utility model；
Figure 13 is the structural schematic diagram of another groove provided by the embodiment of the utility model；
Figure 14 is the turbulent flow formed when air-flow flows through on the windward side of blower collector provided by the embodiment of the utility model
The effect picture in boundary layer；
Figure 15 is the blower collector of the prior art and the noise frequency of blower collector provided by the embodiment of the utility model
Compose comparison diagram.
Specific embodiment
The utility model embodiment blower collector, centrifugal blower and air-conditioning system are retouched in detail with reference to the accompanying drawing
It states.
In the description of the present invention, it should be understood that term " center ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
Referring to Fig. 3 to Fig. 7, the utility model embodiment provides a kind of blower collector 3, windward including ring structure
Protrusion 32 and/or groove 31 are formed on face F, windward side F, protrusion 32 and groove 31 are used for the wake boundary on the F of windward side
Layer disturbance is at turbulent boundary layer.
Referring to Fig.1 4, due to forming fluted 31 on the F of windward side, when air-flow enters blower collector 3 and flows through windward side F
When, it will form turbulent boundary layer at the position close to windward side F, if forming turbulent boundary layer, wall surface of the air-flow in windward side F
On trapping phenomena would not occur, can have certain flow velocity on the contrary, and along the radial direction of blower collector 3, will not shape
It (is not in the air-flow velocity value very little on the wall surface of windward side F, more at the airflow layer with larger current gradient value
Close to the center of blower collector 3, the flow speed value of air-flow is bigger), so, by the interference effect of groove 31, can make to lead to
The flow velocity for crossing the air-flow of windward side F is more uniform, and then blower collector is made to suck more air, improve blower collector into
Wind efficiency.It is following that blower collector technical effect achieved provided by the utility model is verified by experimental data:
Above-mentioned is in blower collector specification having the same, the test carried out under identical external environment, from upper
Intake can be significantly improved by stating experimental data and can be seen that the reeded windward side of tool, and air intake efficiency improves 7%.
Similarly, when being formed with protrusion 32 on the F of windward side, when air-flow enters blower collector 3 and flows through windward side F,
Under the action of protrusion 32, turbulent boundary layer will form at the position of windward side F.
Blower collector (no gas of 5 pairs of blower collectors provided by the embodiment of the utility model and the prior art referring to Fig.1
Flow disturbance structure) fan noise analyzed:
Black line in Figure 15 represents the fan noise spectrum curve figure for using prior art blower collector, low frequency noise
Higher, high frequency noise is lower, still, using the blower of blower collector provided by the embodiment of the utility model, noise spectrum
Low frequency noise reduces in curve graph (grey lines), and high frequency noise increases, and tone becomes softer, correspondinglys increase user experience.
In some embodiments, protrusion 32 includes multiple dot bulges；In other embodiment, groove 31 is wrapped
Multiple concave points are included, dot bulge or concave point form dotted perturbations.
Referring to Fig. 8 and Fig. 9, concave point include it is multiple, multiple concave points have a variety of arrangement modes, exemplary, more referring to Fig. 8
A concave point is divided into multiple dotted groups (i.e. concave point groups), and multiple concave points in each concave point group are located at the central axis of windward side F
For on the same circle in the center of circle；In addition, multiple concave points can also be laid otherwise.
Similarly, dot bulge also may include multiple, and multiple dot bulges are also divided into multiple dot bulge groups, each dotted
Multiple dot bulges in convex sets are located at using the central axis of windward side F as on the same circle in the center of circle.
It is recessed in one of concave point group in two neighboring concave point group referring to Fig. 9 in order to further increase air intake efficiency
Point is first concave point, and the concave point in another concave point group is the second concave point, the line and the second concave point in first concave point and the center of circle and
The line in the center of circle is not arranged on the same straight line.For example, the line of concave point and the center of circle in n-th of concave point group is straight line L1, still,
The line of (n-1)th concave point group or concave point and the center of circle in (n+1)th concave point group is straight line L2, has angle between L1 and L2
(not conllinear).If L1 is conllinear with L2, can occur turbulent boundary layer on the F of windward side and replace showing for laying with laminar boundary layer
As the air intake efficiency of entire blower collector can be reduced compared to turbulent boundary layer is completely formed.
In other embodiments, three concave points adjacent in two neighboring concave point group are laid in isosceles triangle, ginseng
According to Fig. 8, the spacing of the two neighboring concave point in same concave point group (for ease of description, referred to as n-th of concave point group)
For s, between concave point in the concave point and n-th of concave point group in (n-1)th concave point group adjacent with n-th of concave point group and adjacent
Away from for 1/2s, technical effect achieved in this way are as follows: further make the turbulent boundary layer to be formed uniform, further increase air inlet effect
Rate.
Similarly, in two neighboring dot bulge group, the dot bulge in one of dot bulge group is first dotted convex
It rises, the dot bulge in another dot bulge group is the second dot bulge, the line and second of the first dot bulge and the center of circle
The line in dot bulge and the center of circle is not arranged on the same straight line, the technical effect that technical effect achieved reaches with above-mentioned concave point
Identical, details are not described herein.
Dotted group two neighboring (the multiple dot bulges being located on the same circle or the multiple concave points being located on the same circle)
The distance between range be 0.05~0.1x, x be windward side F axial length, if the distance between two neighboring dotted group mistake
Greatly, the formation of turbulent boundary layer is influenced, if the distance between two neighboring dotted group too small, will increase air-flow instead in windward side
Flow resistance on F.
Exemplary, dot bulge can be structure shown in Figure 10 and Figure 12；Exemplary again, concave point can be Figure 11 and figure
Structure shown in 13；Example again can be formed on the face of windward side including the structure as shown in Figure 10, Figure 12, Figure 11 and Figure 13,
And dot bulge and concave point are separately laid.
Referring to Fig. 6, groove 31 includes multiple annular grooves that windward side F is circumferentially arranged, and referring to Fig. 7, protrusion 32 includes edge
Multiple annular protrusions that windward side F is circumferentially arranged, annular groove or annular protrusion form annular perturbations.Multiple annular disturbances
Structure is laid side by side along the axial of blower collector, and the distance between two neighboring annular perturbations range is 0.05~
0.1x, x are the axial length of windward side F, if the distance between two neighboring annular perturbations are excessive, influence turbulent boundary layer
Formation will increase flowing resistance of the air-flow on the F of windward side instead if two neighboring annular the distance between perturbations are too small
Power.
In some embodiments, each annular perturbations is circular configuration, i.e., the central axis of annular perturbations
It is overlapped with the central axis of blower collector, forms circular annular perturbations when manufacturing processing, it is easy to process, convenient for real
It applies.
Exemplary, annular protrusion can be structure as shown in Figure 7；Exemplary again, annular groove can be shown in fig. 6
Structure；Exemplary again, annular protrusion and annular groove are separately laid.
It should be noted that groove provided in this embodiment and concave point, are blind slot and corresponding blind spot, are in order to prevent
Air-flow flow to the leeward opposite with windward side from windward side, to influence the collection wind effect of collector, when air-flow flows through windward side F
When, under the action of concave point, it also will form turbulent boundary layer.
The cross section of dotted perturbations and annular perturbations is semicircular structure or polygonized structure, for example, Fig. 7 institute
The cross section for the annular perturbations shown is semicircular structure, and the cross section of dotted perturbations shown in Figure 12 and Figure 13 is half
The cross section of dotted perturbations shown in circular configuration, Figure 10 and Figure 11 is triangle.In addition, dotted perturbations and annular
The cross section of perturbations may be rectangle or trapezoidal, tie at this to the cross section of dotted perturbations and annular perturbations
Structure is without limitation.
Turbulent boundary layer can be formed on the F of windward side in order to ensure, protrusion 32 and/or groove 31 are along perpendicular to windward side
The height of F be a, a=f δ,Wherein, δ is the boundary thickness that air-flow forms laminar boundary layer in smooth windward side F
Degree, x are the axial length of windward side F, and Re is Reynolds number, and f is flow perturbation structure height coefficient.The height of protrusion 32 refers to protrusion
The vertical range of 32 apogee distance windward side F, the height of groove 31 refer to that the perigee distance windward side F's of groove 31 is vertical
Distance just will increase the flow resistance of air-flow if excessive height, will be the same with smooth windward side if height is too low, formation
It is laminar boundary layer, without will form turbulent boundary layer.
In order to effectively improve air intake efficiency, the value range of f is 0.8~1.1；Preferably, the value range of f be 0.8~
1.1；Further preferably, f=1.0.
Provided by the embodiment of the utility model raised 32 and/or groove 31 height be a, be by first determine wake boundary
The thickness δ of layer, then the thickness δ of foundation laminar boundary layer obtain the height of protrusion 32 and/or groove 31 as a, can thus make to meet
Laminar boundary layer on wind face is changed into turbulent boundary layer because being disturbed, and obtained so raised 32 and/or groove 31
Height a can accurately more make laminar boundary layer interfere at turbulent boundary layer.
Blower collector 3 can be cylinder-shaped collector, conical collector, arc-shaped collector or nozzle shape afflux
Device, without limitation to the specific category of blower collector at this, as long as being formed with the blower collection of flow perturbation structure on the F of windward side
Device is flowed within the protection scope of the disclosure.
On the other hand the utility model embodiment additionally provides a kind of centrifugal blower, referring to Fig. 3, Fig. 4, Fig. 5 and Fig. 8, from
Heart blower includes: casing 1, blower collector 3 and impeller 2, and casing 1 has air intake and outlet air end；Blower collector 3 is above-mentioned
The blower collector that embodiment provides, blower collector 3 are arranged at the air intake of casing 1；Impeller 2 is arranged in casing 1.
Since centrifugal blower provided in this embodiment includes blower collector provided by the above embodiment, when air-flow passes through wind
When machine collector 3, under the action of protrusion 32 and groove 31, it will form turbulent boundary layer on the F of windward side, pass through turbulent boundary layer
The air intake efficiency of blower collector can be effectively improved, and then improves the air intake efficiency of centrifugal blower, simultaneously as protrusion 32 or recessed
The presence of slot 31, in the running, the noise issued is soft for centrifugal blower, effectively improves sound quality compared to existing centrifugal blower,
It sounds user comfortably, and then improves user experience and comfort level.
Casing 1 and blower collector 3 can be integrated formed structure, be also possible to separate structure, for example, working as 1 He of casing
When blower collector 3 is separate structure, blower collector 3 includes diversion division 33 and mounting portion 34, diversion division 33 and mounting portion 34
Connection, and mounting portion 34 is arranged at the air intake of casing 1 by connector or other connection structures (for example, welding).It leads
Stream portion 33 and mounting portion 34 can also be integrally formed.
In some embodiments, casing 1 can be moulding, or sheet metal component；Similarly, blower collector 3 can
To be moulding, it is also possible to sheet metal component；In addition, casing 1 and blower collector 3 are also possible to other materials and are made.
Impeller 2 can choose multiple wing impeller, also can choose the impeller of other structures, at this to the specific structure of impeller 2
Also without limitation.
On the other hand the utility model embodiment additionally provides a kind of air-conditioning system, air-conditioning system includes that above-described embodiment mentions
The centrifugal blower of confession, air-conditioning system include the indoor unit and outdoor unit being connected, and centrifugal blower is mounted in indoor unit.
Since air-conditioning system includes centrifugal blower provided by the above embodiment, and centrifugal blower includes blower collector, wind
Machine collector includes the windward side F of ring structure, and protrusion 32 and/or groove 31, protrusion 32 and groove 31 are formed on the F of windward side
For disturbing the laminar boundary layer on the F of windward side at turbulent boundary layer.It can be made by protrusion 32 and groove 31 close to windward side
Flow boundary layer air form turbulent boundary layer, turbulent boundary layer can reduce air-flow and meet compared with existing laminar boundary layer
Resistance on wind face promotes blower collector to suck more air, and can reduce the gradient phenomenon of air-flow velocity formation, so that
For air-flow when flowing through windward side, flow velocity is more uniform, and then improves the air intake efficiency of blower collector, meanwhile, it has widened air inlet and has made an uproar
The frequency bandwidth of sound reduces the tone of inflow noise, the final sound quality for improving centrifugal blower.
In the description of this specification, particular features, structures, materials, or characteristics can be real in any one or more
Applying can be combined in any suitable manner in example or example.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (8)
1. a kind of blower collector, which is characterized in that the windward side including ring structure is formed with protrusion on the windward side
And/or groove, the protrusion and the groove are used to disturb the laminar boundary layer on the windward side at turbulent boundary layer.
2. blower collector according to claim 1, which is characterized in that the protrusion includes multiple dot bulges or multiple
The annular projection being circumferentially arranged along the windward side；
The groove includes multiple concave points or multiple annular recess being circumferentially arranged along the windward side.
3. blower collector according to claim 2, which is characterized in that multiple dot bulges or multiple concave points
Multiple dotted groups are divided into, the multiple dot bulges or multiple concave points in each described dotted group are located at is met with described
The central axis in wind face is on the same circle in the center of circle.
4. blower collector according to claim 3, which is characterized in that in two neighboring described dotted group, one of them
The dot bulge or the concave point in described dotted group are the first dots structure, the point in another described dotted group
Shape protrusion or the concave point are the second dots structure, the line and second dots structure of first dots structure and the center of circle
It is not arranged on the same straight line with the line in the center of circle.
5. blower collector according to claim 1, which is characterized in that the cross section of the protrusion and the groove is half
Circular configuration or polygonized structure.
6. blower collector according to claim 1, which is characterized in that the protrusion and/or the groove along perpendicular to
The height of the windward side be a, a=f δ,Wherein, δ is air-flow in smooth windward side formation wake boundary
The boundary layer thickness of layer, x are the axial length of the windward side, and Re is Reynolds number, and f is flow perturbation structure height coefficient.
7. a kind of centrifugal blower characterized by comprising
Casing, the casing have air intake and outlet air end；
Blower collector, the blower collector are blower collector of any of claims 1-6, the blower collection
Device is flowed to be arranged at the air intake；
Impeller, the impeller are arranged in the casing.
8. a kind of air-conditioning system, which is characterized in that including centrifugal blower as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920256544.2U CN209557337U (en) | 2019-02-28 | 2019-02-28 | A kind of blower collector, centrifugal blower and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920256544.2U CN209557337U (en) | 2019-02-28 | 2019-02-28 | A kind of blower collector, centrifugal blower and air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209557337U true CN209557337U (en) | 2019-10-29 |
Family
ID=68311308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920256544.2U Active CN209557337U (en) | 2019-02-28 | 2019-02-28 | A kind of blower collector, centrifugal blower and air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209557337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667795A (en) * | 2019-02-28 | 2019-04-23 | 青岛海信日立空调系统有限公司 | A kind of blower collector, centrifugal blower and air-conditioning system |
-
2019
- 2019-02-28 CN CN201920256544.2U patent/CN209557337U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667795A (en) * | 2019-02-28 | 2019-04-23 | 青岛海信日立空调系统有限公司 | A kind of blower collector, centrifugal blower and air-conditioning system |
| WO2020173372A1 (en) * | 2019-02-28 | 2020-09-03 | 青岛海信日立空调系统有限公司 | Air conditioner indoor unit |
| CN109667795B (en) * | 2019-02-28 | 2024-03-19 | 青岛海信日立空调系统有限公司 | Fan current collector, centrifugal fan and air conditioning system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109667795A (en) | A kind of blower collector, centrifugal blower and air-conditioning system | |
| KR20210006483A (en) | Blower and outdoor unit of air conditioner having the same | |
| EP3739218A1 (en) | Axial fan blade, axial fan blade assembly, and axial fan duct assembly | |
| US9234524B2 (en) | Boundary layer controlled logarithmic spiral blade | |
| WO2013154102A1 (en) | Propeller fan, fluid sending device, and mold for molding | |
| WO2021147593A1 (en) | Swirl-elimination structure, mixed flow fan assembly and air conditioner | |
| CN101182941A (en) | Ceiling type air conditioner | |
| CN211715357U (en) | Despin structure, mixed flow fan assembly and air conditioner | |
| WO2021147604A1 (en) | Impeller, mixed-flow fan, and air conditioner | |
| CN104165158A (en) | Centrifugal fan of extractor hood | |
| CN104074803B (en) | Cross-flow fan and air conditioner with same | |
| WO2021147605A1 (en) | Impeller, mixed flow blower, and air conditioner | |
| CN111551339A (en) | Design method of special pressure measuring rake for deformed flow channel of wing-body fusion aircraft ventilation model | |
| CN209557337U (en) | A kind of blower collector, centrifugal blower and air-conditioning system | |
| WO2021147498A1 (en) | Derotator, mixed flow fan, and air conditioner | |
| KR20150136935A (en) | Centrifugal fan | |
| WO2021147595A1 (en) | Whirl eliminating structure, mixed-flow fan assembly and air conditioner | |
| WO2019136940A1 (en) | Air duct assembly for axial fan | |
| JP6141247B2 (en) | Propeller fan, fluid feeder and mold | |
| CN114198324B (en) | Multi-element coupling centrifugal fan collector, centrifugal fan and preparation method of centrifugal fan collector | |
| JP2013217316A (en) | Propeller fan, fluid feed device and molding mold | |
| CN114483648B (en) | Blade design the method is blade and centrifugal fan | |
| CN114370428A (en) | Fan blade and centrifugal fan | |
| CN212272652U (en) | Low-noise impeller and range hood | |
| CN207539093U (en) | Volute tongue structure, ducting system and air conditioner indoor unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |