CN207437452U - A kind of noise reduction current collector, centrifugal blower and air-conditioning system for centrifugal blower - Google Patents

A kind of noise reduction current collector, centrifugal blower and air-conditioning system for centrifugal blower Download PDF

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Publication number
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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China
Prior art keywords
current collector
noise reduction
groove
centrifugal blower
air
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CN201721363564.7U
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Inventor
李建建
吴俊鸿
高旭
陈志伟
廖俊杰
赵万东
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Abstract

The utility model provides a kind of noise reduction current collector, centrifugal blower and air-conditioning system for centrifugal blower, and the noise reduction current collector includes: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 and leeward;Groove structure (3), is opened on the leeward of the diversion section (2) and the groove structure (3) is blind slot.After by the utility model gyration airflow being enabled to flow through groove, free change in flow direction, depart from original track, so as to avoid generating big whirlpool, discrete whirlpool intensity, air-flow is generated with groove inner wall simultaneously hits and rubs, reduce eddy velocity, consumed energy, so as to effectively reduce centrifugation blade leaf top and the vortex noise of current collector area of space, noise reduction is effectively promoted, and it is simple in structure, processing cost is low.

Description

A kind of noise reduction current collector, centrifugal blower and air-conditioning system for centrifugal blower
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.
CN201721363564.7U 2017-10-20 2017-10-20 A kind of noise reduction current collector, centrifugal blower and air-conditioning system for centrifugal blower Active CN207437452U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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