CN207437452U - Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system - Google Patents
Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system Download PDFInfo
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- CN207437452U CN207437452U CN201721363564.7U CN201721363564U CN207437452U CN 207437452 U CN207437452 U CN 207437452U CN 201721363564 U CN201721363564 U CN 201721363564U CN 207437452 U CN207437452 U CN 207437452U
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Abstract
The utility model provides a collector, centrifugal fan and air conditioning system of making an uproar falls for centrifugal fan, the collector of making an uproar falls and includes: the assembling section (1) is matched with a volute structure of the centrifugal fan and used for fixing a current collector; the flow guide section (2) is connected with the assembly section, airflow is guided along the flow guide section from the outside of the current collector, and the flow guide section (2) comprises a windward surface and a leeward surface; the groove structure (3) is arranged on the lee side of the flow guide section (2) and the groove structure (3) is a blind groove. Through the utility model discloses can make the air current that circles round flow through behind the recess, the direction of flow is released and is changed, breaks away from original orbit to avoid generating big swirl, discrete swirl intensity, air current and recess inner wall produce striking and friction simultaneously, reduce the vortex speed, the energy consumption, thereby effectively reduce the vortex noise of centrifugation fan blade leaf top and collector space region, the noise reduction effect is effectively promoted, and simple structure, processing cost hang down.
Description
Technical field
The utility model belongs to wind turbine technical field, and in particular to a kind of noise reduction current collector for centrifugal blower, centrifugation
Wind turbine and air-conditioning system.
Background technology
In conventional centrifugal floor standing air-conditioner air channel structure, to ensure the good catchment effect of current collector and preventing in operational process
Centrifugation blade collides with current collector, and larger spatial joint clearance is often left between centrifugation blade leaf top and current collector.Air-conditioning is transported
During row, for multi-wing centrifugal fan blade in Ye Dingchu it occur frequently that air-flow volume is inhaled, formation whirlpool generates larger vortex noise.
To reduce the vortex noise, patent CN105570201 is carried out according to helmholtz resonance principle using cavity structure
Sqouynd absorption lowering noise, the cavity structure is complicated, and manufacturing process is of high cost, and occupied space is larger, adds small product size.Patent
In CN101592166A, current collector uses recessed camber line structure, the area of space between fan blade and current collector is eliminated, so as to keep away
Exempt from air-flow convolution, generate noise.Due to there are concave surface, when air-flow enters fan blade from the outside through current collector, easily in afflux
It is converged at device concave surface, forms whirlpool, on the one hand generated vortex noise, on the other hand reduce air intake efficiency.Patent
CN106321520A is directed to axial flow blower baffle liner, and similary use opens hole and adds cavity structure, and it is quiet to adjust baffle liner circumferential direction
The degree of unbalancedness of pressure reduces turbulence of the air-flow in baffle liner circumferential direction, while carries out noise reduction using helmholtz resonance chamber
Noise reduction, complicated, processing cost is higher.
Due to the current collector structure of the prior art applied to centrifugal blower, there are sound-deadening and noise-reducing limitation and structures
The technical problems such as complexity, processing cost height, therefore the utility model research and design goes out a kind of noise reduction afflux for centrifugal blower
Device, centrifugal blower and air-conditioning system.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome the collection of the prior art applied to centrifugal blower
Flow device structure there are sound-deadening and noise-reducing effect it is bad the defects of, so as to provide a kind of noise reduction current collector for centrifugal blower, centrifuge
Wind turbine and air-conditioning system.
The utility model provides a kind of noise reduction current collector for centrifugal blower, including：
Load segment is engaged with the volute structure of the centrifugal blower, for fixing current collector；
Diversion section connects with load segment, and air-flow gradually tapers up afflux, and the diversion section outside current collector along diversion section
Including windward side and leeward；
Groove structure, is opened on the leeward of the diversion section and the groove structure is blind slot.
Preferably,
The shape of the groove structure is polyhedral structure.
Preferably,
The groove structure is part sphere structure, cylindrical structure, conical structure or rectangular parallelepiped structure.
Preferably,
The groove structure is multiple, and multiple groove structures are uniformly arranged on the leeward of the diversion section
Or density is intervally arranged.
Preferably,
The current collector is the rotary structure with central axis, and multiple groove structures surround the central axis
It is uniformly distributed circumferentially.
Preferably,
Groove structure total surface area shared on the leeward of the diversion section is not less than the leeward
The 25% of total surface area.
Preferably,
The groove structure is part sphere structure, and the diameter value range of the groove structure is in 3~5mm.
Preferably,
The groove structure is part sphere structure, and the volume of the groove structure accounts for the total volume of the sphere structure
1/3~2/3.
The utility model also provides a kind of centrifugal blower, including foregoing noise reduction current collector, further includes the spiral case knot
Structure.
The utility model also provides a kind of air-conditioning system, including foregoing centrifugal blower.
A kind of noise reduction current collector, centrifugal blower and air-conditioning system for centrifugal blower provided by the utility model has such as
Lower advantageous effect：
Noise reduction current collector, centrifugal blower and the air-conditioning system for centrifugal blower of the utility model, by current collector
Diversion section leeward on the groove structure that sets and groove structure be blind slot, after gyration airflow is enabled to flow through groove,
Change is freeed in flow direction, departs from original track, so as to avoid generating big whirlpool, discrete whirlpool intensity, while air-flow with
Groove inner wall, which generates, to be hit and rubs, and reduces eddy velocity, consumed energy, so as to effectively reduce centrifugation blade leaf top and current collector
The vortex noise of area of space, noise reduction are effectively promoted, and the noise reduction afflux for centrifugal blower of the utility model
Device is simple in structure, processing cost is low, easy to make.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the noise reduction current collector of the utility model；
Fig. 2 is the structure diagram in the A directions of the noise reduction current collector in Fig. 1；
Fig. 3 is the half sectional view in the B-B directions of the noise reduction current collector in Fig. 2；
Fig. 4 is the enlarged structure schematic diagram of the C portion in Fig. 2；
Fig. 5 is the enlarged structure schematic diagram of the D parts in Fig. 3；
Fig. 6 is the front view of the noise reduction current collector and the wind turbine of volute structure cooperation of the utility model；
Fig. 7 is the sectional view in the G-G directions of Fig. 6；
Fig. 8 is the enlarged structure schematic diagram of the H parts of Fig. 7.
Reference numeral is expressed as in figure：
1st, load segment；2nd, diversion section；21st, windward side；22nd, leeward；3rd, groove structure；4th, current collector；5th, volute structure；
6th, centrifugation blade.
Specific embodiment
As shown in Figs. 1-5, the utility model provides a kind of noise reduction current collector for centrifugal blower, including：
Load segment 1 is engaged with the volute structure of the centrifugal blower, for fixing current collector；
Diversion section 2, connects with load segment, and air-flow gradually tapers up afflux, and the water conservancy diversion outside current collector along diversion section
Section 2 includes windward side 21 and leeward 22；
Groove structure 3, is opened on the leeward 22 of the diversion section 2 and the groove structure 3 is blind slot.
It is blind slot by the groove structure and groove structure that are set on the leeward of the diversion section of current collector, can makes
After gyration airflow flows through groove, change is freeed in flow direction, departs from original track, so as to avoid generating big whirlpool, from
Whirlpool intensity is dissipated, while air-flow generates with groove inner wall and hits and rub, and reduces eddy velocity, consumed energy, so as to effectively drop
Low centrifugation blade leaf top and the vortex noise of current collector area of space, noise reduction are effectively promoted, and the utility model
For centrifugal blower noise reduction current collector structure it is simple, processing cost is low, easy to make.Moreover, groove structure be arranged to blind slot,
For the structure type of straight slot or through hole, it can prevent airflow reflux from air-flow being caused to mix and brings damage to entrance
It loses, significantly reduces the noise that air-flow mixed zone is come；If groove structure is arranged to through hole or straight slot, air-flow flows through
The groove structure can penetrate through outflow, can not flow direction be changed and discrete whirlpool, can not reduce noise, and can not make
It obtains air-flow and is generated with groove inner wall and hit and rub and reduce eddy velocity, vortex noise can not be reduced.
A kind of blower fan structure the utility model is related to current collector structure and containing the structure, air conditioner and other life electricity
Device and ventilation equipment.Based on identical air conditioner draught fan system, be respectively adopted the current collector of the utility model with it is of the prior art
Current collector is into Row noise Experimental comparison, and experimental data is as follows under air supply pattern, superpower wind shelves：
| Current collector | Test pattern | Wind shelves | Rotating speed rpm | Total value dB (A) | Peak value dB (A) | Peak frequency Hz |
| Existing scheme | Air-supply | It is superpower | 560 | 54.4 | 39.6 | 330 |
| The utility model | Air-supply | It is superpower | 560 | 52.8 | 37.3 | 334 |
It can be seen that using the utility model current collector structure, noise integrally can reduce by 1~2dB substantially.
As shown in Figure 1, the current collector structure mainly includes：1. load segment is engaged with volute structure, for fixing afflux
Device；2. diversion section connects with load segment, air-flow gradually tapers up afflux from outside along diversion section；3. groove structure is set in water conservancy diversion
Section inner surface (leeward) for changing the flow direction of gyration airflow, avoids generating big whirlpool, while gyration airflow is hit
Groove structure, and rub, consume the energy of gyration airflow.
Existing centrifugation blade cabinet-type air conditioner, during to ensure the good water conservancy diversion effect of current collector and ensure that fan blade rotates not with collection
It flows device inner surface and friction or collision occurs, larger area of space is often left between fan blade leaf top and current collector inner surface.
Existing current collector load segment inner surface is smooth planar structure, and diversion section inner surface is then smooth curved surface knot
Structure, load segment with diversion section inner surface is tangent smoothly transits.
Larger space region is left based on existing centrifugation cabinet-type air conditioner fan blade leaf top and current collector inner surface, table in existing current collector
The phenomenon that face is the structure that smoothly transits, and centrifugation blade is easy to that air-flow convolution occurs when running, i.e. fraction near fan blade top
After fan blade outflow, and spiral case air passage is introduced into, and is to bypass leaf top and is flowed along smooth current collector inner surface, again flowed into
In fan blade, so as to form air flow swirl at leaf top, and then larger vortex noise is generated.
Groove structure is set in diversion section inner surface to reduce vortex noise, the utility model current collector at this, such as Fig. 1-5
It is shown.Using the utility model current collector, when operation of air conditioner, after gyration airflow flows through groove structure, flow direction occurs
Variation, departs from original track, that is, is no longer along smooth current collector inner surface and is flowed, so as to destroy Maelstrom generation
Path, by Maelstrom air-flow carry out it is discrete after, by its initiation vortex noise improved, substantially reduce.
On the other hand, using the utility model current collector, when gyration airflow flows through groove, gas occurs with groove inner wall face
Collision and friction, flowing velocity are remarkably decreased, and the energy of gyration airflow are consumed significantly, so as to reduce vortex noise.
Preferably,
The shape of the groove structure 3 is polyhedral structure.This is the groove structure of the noise reduction current collector of the utility model
Preferred constructive form, by polyhedral structure enable to air-flow can be generated when flowing through wherein multiple directions point to stream
It is dynamic, and then change the swirling flow direction of air-flow from multiple directions and avoid the formation of whirlpool, while can also be from multiple directions to gas
Miscarriage is raw to hit, forms friction, consumed energy, and then reduces vortex noise.
Preferably,
The groove structure 3 is part sphere structure, cylindrical structure, conical structure or rectangular parallelepiped structure.This is this
The preferred constructive form of the groove structure of the noise reduction current collector of utility model.Groove shapes can be part sphere, cylinder, circular cone
Body, cuboid and other regular polyhedral structures, preferably part sphere groove.
Preferably,
The groove structure 3 is multiple, and multiple groove structures 3 are uniform on the leeward of the diversion section 2
Arrangement or density are intervally arranged.Groove structure diversion section inner surface (i.e. leeward) arrangement can density be intervally arranged it is also uniform
Arrangement is preferably chosen and is circumferentially symmetrically and evenly arranged in current collector diversion section inner surface.
Preferably,
The current collector is the rotary structure with central axis, and multiple groove structures 3 surround the central shaft
Line is uniformly distributed in the circumferential.This is the preferred arrangement form of the groove structure of the utility model, so air-flow is enabled to exist
The circumferential direction of current collector can be blocked, avoid the formation of vortex, can collide in peripheral direction, and then finally exist
All directions can carry out noise-reduction to air-flow.
Preferably,
The groove structure 3 total surface area shared on the leeward of the diversion section 2 is not less than described leeward
The 25% of face total surface area.This is that the groove structure of the noise reduction current collector of the utility model opens up gross area size, by its
The total surface area opened up on leeward is arranged to more than the 25% of leeward total surface area, can effectively ensure groove structure
Area is opened up, it is effective to ensure not occurring for vortex gas flow, ensure effect and the effect of enough noise-reductions.
It is further preferred that considering noise reduction, intensity requirement and manufacturing process, the groove structure 3 is described
The shared gross area is the 30% of the leeward gross area on the leeward of diversion section 2.
Preferably,
The groove structure 3 is part sphere structure, and the diameter value range of the groove structure 3 is in 3~5mm.It is excellent
Elect 3mm as.The structure type of such groove structure can ensure that air-flow will not occur the effect of stream swirl, also protect wherein
Enough collisions occur wherein for card air-flow, to reduce pneumatic noise.
Preferably,
The groove structure is part sphere structure, and the volume of the groove structure accounts for the total volume of the sphere structure
1/3~2/3.This is the preferred constructive form of the groove structure of the current collector of the utility model, i.e., it is opened up on leeward
Groove is a part for sphere structure, can so ensure enough charge air flows, ensures air-flow enough collision in a groove
Effect, ensure air-flow in a groove the flowing of multiple directions and avoid generating vortex, make an uproar so as to farthest reducing air-flow
Sound.Further preferably 1/2.To obtain maximum opening area in diversion section inner surface.
As shown in figs 6-8, the utility model also provides a kind of centrifugal blower, including foregoing noise reduction current collector, also wraps
Include the volute structure.It is blind slot by the groove structure and groove structure that are set on the leeward of the diversion section of current collector,
After gyration airflow is enabled to flow through groove, change is freeed in flow direction, departs from original track, so as to avoid generating big whirlpool
Whirlpool, discrete whirlpool intensity, while air-flow are generated with groove inner wall to be hit and rubs, and reduces eddy velocity, consumed energy, so as to have
Effect reduces centrifugation blade leaf top and the vortex noise of current collector area of space, and noise reduction is effectively promoted, and this practicality is new
The noise reduction current collector structure for centrifugal blower of type is simple, processing cost is low, easy to make.Moreover, groove structure is arranged to
Blind slot, for the structure type of straight slot or through hole, can prevent airflow reflux to entrance and cause air-flow mix and
Loss is brought, significantly reduces the noise that air-flow mixed zone is come；If groove structure is arranged to through hole or straight slot, gas
Stream, which flows through the groove structure, can penetrate through outflow, can not flow direction be changed and discrete whirlpool, can not reduce noise, and
It can not cause air-flow is generated with groove inner wall to hit and rub and reduce eddy velocity, vortex noise can not be reduced.
Using the utility model current collector, when operation of air conditioner, after gyration airflow flows through groove structure, flow direction is sent out
Changing departs from original track, that is, is no longer along smooth current collector inner surface and is flowed, so as to destroy Maelstrom life
Into path, by Maelstrom air-flow carry out it is discrete after, by its initiation vortex noise improved, substantially reduce.
On the other hand, using the utility model current collector, when gyration airflow flows through groove, gas occurs with groove inner wall face
Collision and friction, flowing velocity are remarkably decreased, and the energy of gyration airflow are consumed significantly, so as to reduce vortex noise.
The utility model also provides a kind of air-conditioning system, including foregoing centrifugal blower.Using the utility model afflux
Device, when operation of air conditioner, after gyration airflow flows through groove structure, flow direction changes, and departs from original track, i.e., not
It is flowed further along smooth current collector inner surface, so as to destroy the path of Maelstrom generation, Maelstrom air-flow is carried out
After discrete, improved by the vortex noise of its initiation, substantially reduced.
On the other hand, using the utility model current collector, when gyration airflow flows through groove, gas occurs with groove inner wall face
Collision and friction, flowing velocity are remarkably decreased, and the energy of gyration airflow are consumed significantly, so as to reduce vortex noise.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.The above is only the preferred embodiment of the utility model, it is noted that for the art
For those of ordinary skill, on the premise of the utility model technical principle is not departed from, several improvement and modification can also be made,
These improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of noise reduction current collector for centrifugal blower, it is characterised in that：Including：
Load segment (1), is engaged with the volute structure of the centrifugal blower, for fixing current collector；
Diversion section (2), connects with load segment, air-flow outside current collector along diversion section by water conservancy diversion, and the diversion section (2) includes
Windward side (21) and leeward (22)；
Groove structure (3), is opened on the leeward (22) of the diversion section (2) and the groove structure (3) is blind
Slot.
2. noise reduction current collector according to claim 1, it is characterised in that：
The shape of the groove structure (3) is polyhedral structure.
3. noise reduction current collector according to claim 2, it is characterised in that：
The groove structure (3) is part sphere structure, cylindrical structure, conical structure or rectangular parallelepiped structure.
4. noise reduction current collector according to any one of claim 1-3, it is characterised in that：
The groove structure (3) is multiple, and multiple groove structures (3) are equal on the leeward of the diversion section (2)
Even arrangement or density are intervally arranged.
5. noise reduction current collector according to claim 4, it is characterised in that：
The current collector is the rotary structure with central axis, and multiple groove structures (3) surround the central axis
It is uniformly distributed circumferentially.
6. noise reduction current collector according to any one of claim 1-3, it is characterised in that：
The groove structure (3) total surface area shared on the leeward (22) of the diversion section (2) is not less than described
The 25% of leeward total surface area.
7. noise reduction current collector according to claim 3, it is characterised in that：
The groove structure (3) is part sphere structure, and the diameter value range of the groove structure (3) is in 3~5mm.
8. noise reduction current collector according to claim 3, it is characterised in that：
The groove structure is part sphere structure, and the volume of the groove structure accounts for the 1/3 of the total volume of the sphere structure
~2/3.
9. a kind of centrifugal blower, it is characterised in that：Including the noise reduction current collector (4) any one of claim 1-8, also wrap
Include the volute structure (5).
10. a kind of air-conditioning system, it is characterised in that：Including the centrifugal blower described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721363564.7U CN207437452U (en) | 2017-10-20 | 2017-10-20 | Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721363564.7U CN207437452U (en) | 2017-10-20 | 2017-10-20 | Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN207437452U true CN207437452U (en) | 2018-06-01 |
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ID=62293616
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721363564.7U Active CN207437452U (en) | 2017-10-20 | 2017-10-20 | Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956746A (en) * | 2017-10-20 | 2018-04-24 | 珠海格力电器股份有限公司 | Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system |
| CN109838415A (en) * | 2019-03-12 | 2019-06-04 | 上海应达风机股份有限公司 | A kind of volute of blower and its assemble method with denoising device |
| CN112833049A (en) * | 2021-01-11 | 2021-05-25 | 泛仕达机电股份有限公司 | Flow collector and centrifugal fan for eliminating squeaking |
-
2017
- 2017-10-20 CN CN201721363564.7U patent/CN207437452U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956746A (en) * | 2017-10-20 | 2018-04-24 | 珠海格力电器股份有限公司 | Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system |
| CN109838415A (en) * | 2019-03-12 | 2019-06-04 | 上海应达风机股份有限公司 | A kind of volute of blower and its assemble method with denoising device |
| CN112833049A (en) * | 2021-01-11 | 2021-05-25 | 泛仕达机电股份有限公司 | Flow collector and centrifugal fan for eliminating squeaking |
| CN112833049B (en) * | 2021-01-11 | 2022-11-18 | 泛仕达机电股份有限公司 | Flow collector and centrifugal fan for eliminating squeaking |
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