CN109210013A - A kind of noise reducing type blower air-ducting ring and the blower including the air-ducting ring - Google Patents
A kind of noise reducing type blower air-ducting ring and the blower including the air-ducting ring Download PDFInfo
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- CN109210013A CN109210013A CN201811452348.9A CN201811452348A CN109210013A CN 109210013 A CN109210013 A CN 109210013A CN 201811452348 A CN201811452348 A CN 201811452348A CN 109210013 A CN109210013 A CN 109210013A
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- air
- ducting ring
- resonant cavity
- side wall
- ducting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
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- 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
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of noise reducing type blower air-ducting ring and including the blower of the air-ducting ring, blower includes fan, guide vane and air-ducting ring, wherein air-ducting ring includes air-ducting ring side wall and resonant cavity, air-ducting ring side wall includes contraction section, changeover portion, expansion segment, inner surface of the air-ducting ring side wall close to guide vane side designs multiple small through-holes, resonant cavity side wall is sealing surface, resonator chamber is formed between air-ducting ring side wall surface and resonant cavity side wall, the good riser of setting partition forms the different unit resonant cavity of volume in resonator chamber, the cavity volume of unit resonant cavity is of different sizes to can be obtained different resonant frequencies, when passing through the through-hole on unit resonant cavity surface with frequency noise similar in resonant frequency, since ceaselessly reflection reduces the energy of the frequency noise in resonant cavity, it is finally reached the effect for reducing Middle and low frequency noise.For high-frequency noise, sound-absorbing material is filled in unit resonant cavity can carry out effectively noise reduction to high-frequency noise.
Description
Technical field
The present invention relates to blower fields, and in particular to a kind of noise reducing type blower air-ducting ring and the blower including the air-ducting ring.
Background technique
Fan is the essential component part of industries such as refrigeration or ventilation, fan noise mainly by rotational noise and
Eddy current crack composition, wherein rotational noise is the principal element for influencing blower sound quality based on the discrete noise of low frequency.With turn
The increase of speed, the rotational noise based on low-frequency component becomes apparent compared to eddy current crack speedup, this low frequency " drone "
Abnormal sound also highlights more obvious.At present the control of fan noise is required to be increasingly stringenter, but individually fan itself is carried out
Noise reduction difficulty is very big, in the prior art, in terms of axial flow blower low-frequency noise mostly from change blade quantity, blade
Spacing, blade shape etc. are started with, for example use the leafy axial-flow leaf of Unequal distance, and this mode is compared to equidistant axis stream wind
Single BPF (blade pass frequency, blade passing frequency) can be become multiple BPF noises, this mode by leaf
It is equivalent to and substitutes single noise with broadband noise, although sound quality feels there is a little improvement, but can not reduce its amplitude.It therefore can be with
It is break-through point from air-ducting ring, a kind of new noise reduction direction is provided for blower noise reduction by noise reducing type air-ducting ring.
Application No. is the patents of CN201611049188.4 to disclose a kind of perforation air-ducting ring, is used for air-conditioner outdoor unit, empty
Adjusting outdoor unit includes side plate, top cover and axial-flow windwheel, and perforation air-ducting ring includes: air-ducting ring ontology, and air-ducting ring ontology is upper and lower two
The cavity with opening is held, is provided with through-hole on air-ducting ring ontology；Wherein, axial-flow windwheel is arranged in cavity, and side plate is arranged in
In the circumferential direction of air-ducting ring ontology, the upper port of side plate and air-ducting ring ontology is adapted to installation with top cover, air-ducting ring ontology, side plate with
Top cover defines chamber jointly.Perforation air-ducting ring provided by the invention is provided with multiple through-holes, air-ducting ring sheet on air-ducting ring ontology
Body and the side plate and top cover of surrounding form the cavity of a relative closure, using the principle of perforated plate resonant silencing, reduce 240Hz
The noise of following frequency band, to improve sound quality.Wherein, it is dropped by the installation space of setting through-hole aperture, punching rate, air-ducting ring
Low axial flow blower rotational noise.The patent application passes through and forms cavity progress resonant silencing between air-ducting ring ontology and side plate, but
It is that only one and volume are fixed due to resonant cavity, good noise reduction effect can not be played for the noise of different range frequency.
Summary of the invention
In order to solve the above-mentioned technical problem, an object of the present invention is to provide a kind of noise reducing type blower air-ducting ring, passes through
Contraction section, changeover portion, expansion segment and resonant cavity in air-ducting ring form the different hertz resonant cavity of nurse suddenly of several volumes,
Nurse hertz resonant cavity can reduce the Middle and low frequency noise of fan generation suddenly, and suction can be filled in the different unit resonant cavity of volume
Sound material can reduce the high-frequency noises of fan generation.
For achieving the above object, the technical solution adopted by the present invention is as follows:
A kind of noise reducing type blower air-ducting ring, the air-ducting ring are the cavity that upper and lower ends have opening, peace in the cavity
Guide vane is filled, the air-ducting ring includes air-ducting ring side wall and the resonant cavity for being set to the air-ducting ring side-wall outer side, described
Resonant cavity includes resonant cavity side wall and several layers are set to the partition between the resonant cavity side wall and the air-ducting ring side wall,
The outer ring of the partition is connect with the inside of the resonant cavity side wall, the outside of the inner ring of the partition and the air-ducting ring side wall
Chamber between the resonant cavity side wall and the air-ducting ring side wall is divided into several layers resonant cavity by contact, the partition；Institute
Several through-holes are arranged in the inside for stating air-ducting ring side wall, and the resonant cavity side wall is closed side wall, air-ducting ring side wall and resonant cavity
Side wall forms resonator chamber, and resonator chamber is divided into multilayer resonant cavity by partition.
Preferably, the angle between the partition and the resonant cavity side wall is right angle.
Preferably, the air-ducting ring side wall includes contraction section, changeover portion and expansion segment, and the contraction section is located at the wind-guiding
One end of circle, the expansion segment are located at the other end of the air-ducting ring, and the expansion segment is located at the contraction section and the expansion
Between section, i.e., the described air-ducting ring side wall successively includes contraction section, changeover portion and expansion segment, the air-ducting ring side by upper end to lower end
The contraction section of wall, changeover portion and expansion segment are integrally formed, and the race diameter of the contraction section is from one end port of air-ducting ring to mistake
A section direction is crossed to be gradually reduced；The race diameter of the changeover portion is always maintained at constant；The race diameter of the expansion segment is by described
The other end port of the position that changeover portion is connected with the expansion segment to the air-ducting ring is gradually increased.The changeover portion and expansion
The air-ducting ring side wall and the resonant cavity one complete resonant chamber of formation at section place, at the changeover portion and expansion segment
The air-ducting ring side wall is equivalent to the inner sidewall of the resonator chamber, and resonant cavity side wall is the lateral wall of resonator chamber.
Preferably, the air-ducting ring side wall at the contraction section extends from the port of the air-ducting ring to changeover portion in bending.
It is furthermore preferred that the air-ducting ring side wall at the contraction section is circular arc bending, and bending direction is close to the wind-guiding
The direction of circle center.The position of the expansion segment connected by the changeover portion with the expansion segment is another to the air-ducting ring
The inclined expansion in port is held, inclined direction is the direction far from the wind-guiding circle center.
Preferably, the inside of the air-ducting ring side wall on the changeover portion and the expansion segment is arranged in the through-hole.Through-hole
It is provided only on changeover portion and expansion segment, contraction section cannot be set to, air-flow is the process in acceleration and rectification in contraction section,
If multiple through-holes are arranged on contraction section will increase intake resistance, it is unfavorable for air-flow and accelerates and rectify.
Preferably, the outside of the air-ducting ring side wall of the changeover portion and the expansion segment, institute is arranged in the resonant cavity
The upper end for stating resonant cavity further includes a roof, and the inner ring of the roof is abutted with the outer surface of the air-ducting ring side wall, institute
State the position that roof is connect with the contraction section and the changeover portion and be in same level, the bottom port of the expansion segment with
The bottom of the resonant cavity side wall at the resonant cavity lower end connects.
It is furthermore preferred that the diameter of the resonant cavity side wall is remained unchanged by upper end to lower end, the entirety of the resonant cavity
Height is less than the sum of the changeover portion and the vertical height of the expansion segment, described total greater than the vertical height of the expansion segment
Vibration chamber side wall and the air-ducting ring side wall at the changeover portion are parallel to each other.
It is furthermore preferred that the quantity of the partition is at least one, the partition is set to the lower section of the roof.
Preferably, the position that the changeover portion is connected with the expansion segment air-ducting ring side-wall outer side be arranged one every
Plate is fixedly connected on the inside of the outer ring of partition and resonant cavity side wall, the inner ring of the partition and the changeover portion and the expansion
The position of section connection abuts.
Preferably, several risers are set in each layer resonant cavity, and the riser is set to two neighboring described
Between partition, the distance between two adjacent described risers are unequal in each layer resonant cavity, and the riser will be every
The unit resonant cavity that layer resonant cavity is divided into volume different.Since the side of unit resonant cavity is the air-ducting ring side with through-hole
Wall, the other side is closed resonant cavity side wall, therefore the different units resonant cavity in different layers resonant cavity forms volume difference
The hertz resonant cavity of nurse suddenly, cavity volume is of different sizes to can be obtained different resonant frequencies, when with frequency similar in resonant frequency
When noise is by the through-hole on nurse hertz resonant cavity surface suddenly, these frequency noises can be spread into unit resonant cavity, and
It is ceaselessly reflected between unit resonant cavity inner wall, until unit resonant cavity is reflected off, due to not stopping in unit resonant cavity
Ground reflects the energy for reducing the frequency noise, is finally reached the effect for reducing Middle and low frequency noise.The unit of different volumes resonates
Chamber can reduce the noise of different frequency.
Preferably, the distance between two described risers adjacent in each layer resonant cavity are in and successively increase or successively decrease
Arrangement mode.
Preferably, the partition and the resonant cavity side wall and the air-ducting ring side wall are orthogonal, the riser and institute
State that partition is orthogonal, the upper and lower ends of the riser are connect with the partition, the left and right ends of the riser respectively with it is described
The inside of resonant cavity side wall is connected with the outside of the air-ducting ring side wall.
Preferably, the unit resonant cavity can calculate resonant frequency by following formula:
Wherein: f0 is resonant frequency, and C is the velocity of sound, and S1 is through hole section product, and D is through-hole diameter, and L is through-hole thickness, and V is
Cavity volume.
Preferably, the range of the through-hole diameter D are as follows: 1mm≤D≤3mm.Excessive through-hole diameter will increase out air-flow
Resistance reduces air quantity of fan, and can generate howling.
Preferably, the sum of the inner surface product of the air-ducting ring side wall at the changeover portion and expansion segment is S, described logical
The total sectional area in hole is S2, the range of S2 are as follows: 0.01S≤S2≤0.05S.If through-hole total sectional area S2 will increase air-flow when excessive
Resistance, reduce air quantity of fan.
Preferably, sound-absorbing material is filled in the unit resonant cavity.The sound-absorbing material filled in unit resonant cavity can drop
High-frequency noise in low fan can not form reflection since the wavelength of high-frequency noise is shorter in unit resonant cavity, be this element
Resonant cavity can not high-frequency noise carry out noise reduction, but in unit resonant cavity fill sound-absorbing material can have to high-frequency noise
Effect ground noise reduction.
Preferably, sound-absorbing material is filled in the unit resonant cavity of part.
Preferably, sound-absorbing material is filled in all unit resonant cavities at least one layer of resonant cavity.
Preferably, the filling sound-absorbing material being spaced in the unit resonant cavity in each layer of resonant cavity.
Preferably, the sound-absorbing material is inorfil sound-absorbing material, inorganic foamed sound-absorbing material, foamed plastics sound absorber
One of material is a variety of.
It is furthermore preferred that the sound-absorbing material is metallic fiber sound-absorbing material, in foamed aluminium, polyurethane foam sound-absorbing material
It is one or more.
Preferably, the resonant cavity is installed on the air-ducting ring side-wall outer side with through-hole after independently forming, can be by partition
Interference fit is used with air-ducting ring side wall.
The second object of the present invention is to provide a kind of blower, for achieving the above object, the technical side that the present invention takes
Case is as follows:
A kind of blower, including fan, guide vane and air-ducting ring, the air-ducting ring are wind-guiding described in any of the above embodiments
Circle, the guide vane is arranged in the inner ring of the air-ducting ring side wall lower ends, the fan be set to the guide vane and
Between the air-ducting ring sidewall upper.
Compared with the existing technology, the present invention achieves beneficial technical effect:
Noise reducing type blower air-ducting ring provided by the invention and blower, blower include fan, guide vane and air-ducting ring,
Middle air-ducting ring includes air-ducting ring side wall and resonant cavity, and air-ducting ring side wall includes contraction section, changeover portion, expansion segment, air-ducting ring side
Inner surface of the wall close to guide vane side designs multiple small through-holes, and resonant cavity side wall is sealing surface, air-ducting ring side wall surface
Resonator chamber is formed between resonant cavity side wall, the good riser of setting partition forms the different unit resonance of volume in resonator chamber
Chamber, since the side of unit resonant cavity is the air-ducting ring side wall with through-hole, the other side is closed resonant cavity side wall, therefore not
Different units resonant cavity in same layer resonant cavity forms the different hertz resonant cavity of nurse suddenly of volume, the cavity body of unit resonant cavity
Product is of different sizes to can be obtained different resonant frequencies, when passing through nurse hertz resonant cavity table suddenly with frequency noise similar in resonant frequency
When the through-hole in face, these frequency noises can spread into unit resonant cavity, and not stop between the wall surface in unit resonant cavity
Ground reflection, until unit resonant cavity is reflected off, since ceaselessly reflection reduces the frequency noise in unit resonant cavity
Energy is finally reached the effect for reducing Middle and low frequency noise.For high-frequency noise, since the wavelength of high-frequency noise is shorter, Wu Fa
Reflection is formed in unit resonant cavity, be this element resonant cavity can not high-frequency noise carry out noise reduction, but in unit resonant cavity
Interior filling sound-absorbing material can carry out effectively noise reduction to high-frequency noise.
Detailed description of the invention
Fig. 1 is a kind of complete machine sectional view of noise reducing type blower of the present invention；
Fig. 2 is a kind of cross-sectional perspective view of noise reducing type blower air-ducting ring of the present invention；
Fig. 3 is the resonant cavity schematic perspective view in a kind of noise reducing type blower air-ducting ring of the present invention；
Fig. 4 is the structural schematic diagram of the unit resonant cavity in a kind of noise reducing type blower air-ducting ring of the present invention；
Fig. 5 is a kind of complete machine main view of noise reducing type blower of the present invention；
Fig. 6 is a kind of complete machine perspective view of noise reducing type blower of the present invention.
Appended drawing reference:
1. air-ducting ring；11. air-ducting ring side wall；12. resonant cavity；121. resonant cavity side wall；122. unit resonant cavity；13.
Contraction section；14. changeover portion；15. expansion segment；16. through-hole；17. partition；18. roof；19. riser；2. guide vane；3. fan.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments to the present invention
It is further elaborated, but the scope of protection of present invention is not limited to following specific embodiments.
As shown in Figure 1-3, a kind of noise reducing type blower air-ducting ring, the air-ducting ring 1 is the cavity that upper and lower ends have opening,
Guide vane 2 is installed, the air-ducting ring 1 includes air-ducting ring side wall 11 and is set to outside the air-ducting ring side wall 11 in the cavity
The resonant cavity 12 of side, the resonant cavity 12 include that resonant cavity side wall 121 and several layers are set to the resonant cavity side wall 121
Partition 17 between the air-ducting ring side wall 11, the angle between the partition 17 and the resonant cavity side wall 121 is right angle.
It is connected on the inside of the outer ring of the partition 17 and the resonant cavity side wall 121, the inner ring of the partition 17 and the air-ducting ring side wall
Chamber between the resonant cavity side wall 121 and the air-ducting ring side wall 11 is divided by 11 outer side contacts, the partition 17
Several layers resonant cavity；Several through-holes 16 are arranged in the inside of the air-ducting ring side wall 11, and the resonant cavity side wall 121 is closed side
Wall, air-ducting ring side wall 11 and resonant cavity side wall 121 form resonator chamber, and resonator chamber is divided into multilayer resonant cavity by partition 17.
As illustrated in fig. 1 and 2, the air-ducting ring side wall 11 includes contraction section 13, changeover portion 14 and expansion segment 15, the contraction
Section 13 is located at one end of the air-ducting ring 1, and the expansion segment 15 is located at the other end of the air-ducting ring 1, the expansion segment 15
Between the contraction section 13 and the expansion segment 15, i.e., the described air-ducting ring side wall 11 successively includes contraction section by upper end to lower end
13, changeover portion 14 and expansion segment 15, contraction section 13, changeover portion 14 and the expansion segment 15 of the air-ducting ring side wall 11 are integrally formed,
The race diameter of the contraction section 13 is gradually reduced from the upper end port of air-ducting ring 1 to 14 direction of changeover portion；The changeover portion 14
Race diameter be always maintained at it is constant；The race diameter of the expansion segment 15 is connected by the changeover portion 14 and the expansion segment 15
The lower end port of position to the air-ducting ring 1 be gradually increased.The air-ducting ring side at the changeover portion 14 and expansion segment 15
Wall 11 and the resonant cavity 12 form a complete resonant chamber, the air-ducting ring at the changeover portion 14 and expansion segment 15
Side wall 11 is equivalent to the inner sidewall of the resonator chamber, and resonant cavity side wall 121 is the lateral wall of resonator chamber.Expansion segment 15 and receipts
The diameter of contracting section 13 is all larger than the diameter of changeover portion 14, it is ensured that the resonant cavity side wall 121 of resonant cavity 12 is just stuck in institute
It states between expansion segment 15 and contraction section 13.
Air-ducting ring side wall 11 at the contraction section 13 extends from the port of the air-ducting ring 1 to changeover portion 14 in bending.
Air-ducting ring side wall 11 at the contraction section 13 is circular arc bending, and bending direction is the direction close to 1 center of air-ducting ring.
The position of the expansion segment 15 connected by the changeover portion 14 and the expansion segment 15 to the other end port of the air-ducting ring 1
Inclined expansion, inclined direction are the direction far from 1 center of air-ducting ring.
The inside of the air-ducting ring side wall 11 on the changeover portion 14 and the expansion segment 15 is arranged in the through-hole 16.Through-hole
16 are provided only on changeover portion 14 and expansion segment 15, cannot be set to contraction section 13, air-flow be in contraction section 13 in accelerating and
The process of rectification is unfavorable for air-flow and accelerates and rectify if multiple through-holes 16 are arranged on contraction section 13 will increase intake resistance.
The outside of the air-ducting ring side wall 11 of the changeover portion 14 and the expansion segment 15, institute is arranged in the resonant cavity 12
The upper end for stating resonant cavity 12 further includes a roof 18, the outer surface of the inner ring of the roof 18 and the air-ducting ring side wall 11
It abuts, the position that the roof 18 is connect with the contraction section 13 and the changeover portion 14 is in same level, the expansion
The bottom port of section 15 is connect with the bottom of the resonant cavity side wall 121 at 12 lower end of resonant cavity.The resonant cavity
The diameter of side wall 121 is remained unchanged by upper end to lower end, and the whole height of the resonant cavity 12 is less than 14 He of changeover portion
The sum of the vertical height of the expansion segment 15, greater than the vertical height of the expansion segment 15, the resonant cavity side wall 121 with it is described
The air-ducting ring side wall 11 at changeover portion 14 is parallel to each other.
The quantity of the partition 17 is at least one, and the partition 17 is set to the lower section of the roof 18.The present embodiment
Preferably, the quantity of partition 17 is three, and one of setting of partition 17 is connected in the changeover portion 14 and the expansion segment 15
Position the outside of air-ducting ring side wall 11, the outer ring of partition 17 is fixedly connected with the inside of resonant cavity side wall 121, the partition
The position that inner ring is connect with the changeover portion 14 and the expansion segment 15 abuts.Other two partition 17 is separately positioned on the mistake
The outside of the air-ducting ring side wall 11 of section 14 and the expansion segment 15 is crossed, three partitions 17 cooperate roof 18 and 15 bottom of expansion segment will
Resonator chamber is divided into four layers of resonant cavity.
As shown in figure 3, several risers 19 are arranged in each layer resonant cavity, the riser 19 is set to adjacent two
Between a partition 17, unequal, the institute of the distance between two adjacent described risers 19 in each layer resonant cavity
State the unit resonant cavity 122 that every layer of resonant cavity is divided into volume different by riser 19.Since the side of unit resonant cavity 122 is band
There is the air-ducting ring side wall 11 of through-hole 16, the other side is closed resonant cavity side wall 121, therefore the difference in different layers resonant cavity is single
First resonant cavity 122 forms the different hertz resonant cavity of nurse suddenly of volume, and cavity volume is of different sizes to can be obtained different resonance frequencies
Rate, when passing through the through-hole 16 on nurse hertz resonant cavity surface suddenly with frequency noise similar in resonant frequency, these frequency noise meetings
It spreads into unit resonant cavity 122, and is ceaselessly reflected between 122 inner wall of unit resonant cavity, until being reflected off
Unit resonant cavity 122 is finally reached since ceaselessly reflection reduces the energy of the frequency noise in unit resonant cavity 122
Reduce the effect of Middle and low frequency noise.The unit resonant cavity 122 of different volumes can reduce the noise of different frequency.
The partition 17 and the resonant cavity side wall 121 and the air-ducting ring side wall 11 are orthogonal, the riser 19 with
The partition 17 is orthogonal, and the upper and lower ends of the riser 19 are connect with the partition 17, the left and right ends of the riser 19
It is connect respectively with the outside of the inside of the resonant cavity side wall 121 and the air-ducting ring side wall 11.
As shown in figure 4, the unit resonant cavity 122 can calculate resonant frequency by following formula:
Wherein: f0 is resonant frequency, and C is the velocity of sound, and S1 is 16 sectional area of through-hole, and D is 16 diameter of through-hole, and L is that through-hole 16 is thick
Degree, V is cavity volume.
The range of the 16 diameter D of through-hole are as follows: 1mm≤D≤3mm.Excessive 16 diameter of through-hole will increase out the resistance of air-flow
Power reduces 3 air quantity of fan, and can generate howling.The air-ducting ring side wall 11 at the changeover portion 14 and expansion segment 15
The sum of inner surface product is S, i.e., the inner surface product of the described resonator chamber is S, and the total sectional area of the through-hole 16 is S2, S2's
Range are as follows: 0.01S≤S2≤0.05S.If 16 total sectional area S2 of through-hole will increase the resistance of air-flow when excessive, reduce 3 wind of fan
Amount.
11 outside of air-ducting ring side wall with through-hole 16, resonant cavity 12 are installed on after the independent molding of the resonant cavity 12
In resonant cavity side wall 121, partition 17, roof 18 and riser 19 be integrally formed.The resonant cavity 12 and air-ducting ring side
Partition 17, roof 18 and air-ducting ring side wall 11 can be used interference fit when installing by wall 11.Resonant cavity 12 is mounted on institute
When stating on air-ducting ring side wall 11, since the diameter of expansion segment 15 and contraction section 13 is all larger than the diameter of changeover portion 14, it is ensured that
The resonant cavity side wall 121 of resonant cavity 12 is just limited between the expansion segment 15 and contraction section 13, is risen to resonant cavity 12
To good position-limiting action.
As it can be seen in figures 5 and 6, a kind of blower, including fan 3, guide vane 2 and air-ducting ring 1, the air-ducting ring 1 are upper
Described in any item air-ducting rings 1 are stated, the guide vane 2 is arranged in the inner ring of 11 lower end of air-ducting ring side wall, the wind
Fan 3 is set between the guide vane 2 and 11 upper end of air-ducting ring side wall.
Embodiment 2
The embodiment only describes and the difference of above-described embodiment, remaining technical characteristic is same as the previously described embodiments.?
In the present embodiment, the distance between two adjacent described risers 19 are in successively increase or successively decrease in each layer resonant cavity
Arrangement mode.
Embodiment 3
As shown in Fig. 2, the embodiment only describes and the difference of above-described embodiment, remaining technical characteristic and above-mentioned implementation
Example is identical.In the present embodiment, sound-absorbing material is filled in the unit resonant cavity 122.The sound-absorbing filled in unit resonant cavity 122
Material can reduce the high-frequency noise in fan 3, since the wavelength of high-frequency noise is shorter, can not in unit resonant cavity 122 shape
At reflection, be this element resonant cavity 122 can not high-frequency noise carry out noise reduction, but fill sound absorber in unit resonant cavity 122
Material can carry out effectively noise reduction to high-frequency noise.The sound-absorbing material is inorfil sound-absorbing material, inorganic foamed sound absorber
One of material, foamed plastics sound-absorbing material are a variety of.The present embodiment is preferred, and the sound-absorbing material is metallic fiber sound absorption material
One of material, foamed aluminium, polyurethane foam sound-absorbing material are a variety of.
Embodiment 4
The embodiment only describes and the difference of above-described embodiment, remaining technical characteristic is same as the previously described embodiments.?
In the present embodiment, sound-absorbing material is filled in the unit resonant cavity 122 of part.
Embodiment 5
The embodiment only describes and the difference of above-described embodiment, remaining technical characteristic is same as the previously described embodiments.?
In the present embodiment, sound-absorbing material is filled in all unit resonant cavities 122 at least one layer of resonant cavity.
Embodiment 6
The embodiment only describes and the difference of above-described embodiment, remaining technical characteristic is same as the previously described embodiments.?
In the present embodiment, the filling sound-absorbing material that is spaced in the unit resonant cavity 122 in each layer of resonant cavity.
Embodiment 7
The embodiment only describes and the difference of above-described embodiment, remaining technical characteristic is same as the previously described embodiments.?
In the present embodiment, the volume in resonant cavity described in adjacent two layers along two axial neighbouring unit resonant cavities 122 is not identical.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not constitute any restrictions to invention.
Claims (10)
1. a kind of noise reducing type blower air-ducting ring, the air-ducting ring is the cavity that upper and lower ends have opening, installation in the cavity
Guide vane, which is characterized in that the air-ducting ring includes air-ducting ring side wall and the resonance for being set to the air-ducting ring side-wall outer side
Cavity, the resonant cavity include resonant cavity side wall, several layers be set to the resonant cavity side wall and the air-ducting ring side wall it
Between partition, the outer ring of the partition connect with the inside of the resonant cavity side wall, the inner ring of the partition and the air-ducting ring
Chamber between the resonant cavity side wall and the air-ducting ring side wall is divided into several layers by the outer side contacts of side wall, the partition
Resonant cavity；Several through-holes are arranged in the inside of the air-ducting ring side wall, and the resonant cavity side wall is closed side wall.
2. a kind of noise reducing type blower air-ducting ring according to claim 1, which is characterized in that the air-ducting ring side wall includes receiving
Contracting section, changeover portion and expansion segment, the contraction section are located at one end of the air-ducting ring, and the expansion segment is located at the air-ducting ring
The other end, the expansion segment is between the contraction section and the expansion segment, and the race diameter of the contraction section is by air-ducting ring
One end port be gradually reduced to changeover portion direction；The race diameter of the changeover portion is always maintained at constant；The expansion segment
The other end port of the position that race diameter is connected by the changeover portion with the expansion segment to the air-ducting ring is gradually increased.
3. a kind of noise reducing type blower air-ducting ring according to claim 2, which is characterized in that the air-ducting ring at the contraction section
Side wall extends from the port of the air-ducting ring to changeover portion in bending.
4. a kind of noise reducing type blower air-ducting ring according to claim 2, which is characterized in that the through-hole is arranged in the mistake
Cross the inside of the air-ducting ring side wall in section and the expansion segment.
5. a kind of noise reducing type blower air-ducting ring according to claim 2, which is characterized in that the resonant cavity is arranged in institute
The outside of the air-ducting ring side wall of changeover portion and the expansion segment is stated, the upper end of the resonant cavity further includes a roof, described
The inner ring of roof is abutted with the outer surface of the air-ducting ring side wall, and the roof is connect with the contraction section and the changeover portion
Position is in same level, the resonant cavity side wall at the bottom port of the expansion segment and the resonant cavity lower end
Bottom connection.
6. a kind of noise reducing type blower air-ducting ring according to claim 2, which is characterized in that in each layer resonant cavity
Several risers are set, and the riser is set between the two neighboring partition, adjacent two in each layer resonant cavity
The distance between a riser is unequal, the unit resonant cavity that every layer of resonant cavity is divided into volume different by the riser.
7. a kind of noise reducing type blower air-ducting ring according to claim 1, which is characterized in that the range of the through-hole diameter D
Are as follows: 1mm≤D≤3mm.
8. a kind of noise reducing type blower air-ducting ring according to claim 2, which is characterized in that at the changeover portion and expansion segment
The sum of the inner surface product of the air-ducting ring side wall be S, the total sectional area of the through-hole is S2, the range of S2 are as follows: 0.01S≤
S2≦0.05S。
9. a kind of noise reducing type blower air-ducting ring according to claim 6, which is characterized in that filling in the unit resonant cavity
There is sound-absorbing material.
10. a kind of blower, including fan, guide vane and air-ducting ring, which is characterized in that the air-ducting ring is claim 1-
9 described in any item air-ducting rings, the guide vane are arranged in the inner ring of the air-ducting ring side wall lower ends, the fan setting
Between the guide vane and the air-ducting ring sidewall upper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452348.9A CN109210013B (en) | 2018-11-30 | 2018-11-30 | Noise reduction type fan air guide ring and fan comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452348.9A CN109210013B (en) | 2018-11-30 | 2018-11-30 | Noise reduction type fan air guide ring and fan comprising same |
Publications (2)
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| CN109210013A true CN109210013A (en) | 2019-01-15 |
| CN109210013B CN109210013B (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811452348.9A Active CN109210013B (en) | 2018-11-30 | 2018-11-30 | Noise reduction type fan air guide ring and fan comprising same |
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| Country | Link |
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| CN (1) | CN109210013B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113623251A (en) * | 2021-08-30 | 2021-11-09 | 苏州浪潮智能科技有限公司 | Pneumatic noise elimination device and noise elimination fan |
| EP3945219A1 (en) * | 2020-07-27 | 2022-02-02 | Carrier Corporation | Noise reduction device for outlet side of fan and heat exchange system including the same |
| CN114076124A (en) * | 2020-08-20 | 2022-02-22 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal volute, centrifugal fan and range hood equipment |
| WO2024006293A1 (en) * | 2022-06-27 | 2024-01-04 | York Guangzhou Air Conditioning And Refrigeration Co., Ltd. | Air guide ring and axial flow fan comprising same |
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|---|---|
| CN109210013B (en) | 2020-11-27 |
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