CN105317657A - Silencer and compressor with same - Google Patents
Silencer and compressor with same Download PDFInfo
- Publication number
- CN105317657A CN105317657A CN201510903971.1A CN201510903971A CN105317657A CN 105317657 A CN105317657 A CN 105317657A CN 201510903971 A CN201510903971 A CN 201510903971A CN 105317657 A CN105317657 A CN 105317657A
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- expansion cavity
- resonance part
- baffler
- main body
- noise
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- 230000003584 silencer Effects 0.000 title abstract 5
- 230000000694 effects Effects 0.000 abstract description 6
- 230000030279 gene silencing Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000000763 evoking effect Effects 0.000 description 1
- 201000004960 glottis neoplasm Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a silencer and a compressor with the same, wherein the silencer comprises: a dome cover body having an inner cavity; the first resonance part is arranged on the top cover body and communicated with the inner cavity, and sound waves in the inner cavity are reflected in the first resonance part and offset with each other to reduce the noise of the inner cavity. Set up the first resonance portion with head cover main part inner chamber on the head cover main part for the sound wave in the inner chamber takes place to reflect and offset each other in first resonance portion, plays the frequency of sound wave in the reduction inner chamber, thereby makes the silencer play the effect of noise reduction. The provision of the first resonance portion effectively eliminates strong dipole acoustic vibration noise excited by the muffler. The invention effectively solves the problem of high noise of the silencer in the prior art.
Description
Technical field
The present invention relates to Compressor Technology field, in particular to a kind of baffler and the compressor with it.
Background technique
As shown in Figure 1 to Figure 3, the noise elimination of conventional muffler 10 ' adopts phase interference type baffler to suppress DIPOLE MODE noise.Its principle is arranged in the wave amplitude of DIPOLE MODE by two of baffler relief openings 11 ', under the prerequisite that the acoustic pressure amplitude of two relief openings 11 ' is identical with phase place, the doublet glottis neoplasms amplitude that two outlets are evoked is equal, and phase place is contrary, thus cancels out each other.
There is following defect in conventional muffler:
1, due to compressor cycle sex work, producing noise in the pump housing is microseismic noise, and the acoustic pressure amplitude being difficult to two relief openings ensureing baffler is identical with phase place.
2, easily eddy current crack is produced in baffler exhaust ports.
3, air-flow piercing device noise will be produced from relief opening high pressure draught out, cause compressor aerodynamic noise high.
Summary of the invention
Main purpose of the present invention is the compressor providing a kind of baffler and have it, to solve the large problem of baffler noise of the prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of baffler, comprising: dome main body, has inner chamber; First resonance part, to be arranged in dome main body and and intracavity inter-connection, the sound wave in inner chamber occurs to reflect and cancels out each other to reduce the noise of inner chamber in the first resonance part.
Further, the first resonance part comprises linkage section, the first end of linkage section and intracavity inter-connection.
Further, the first resonance part also comprises: the first expansion cavity, and the second end of linkage section is connected with the first expansion cavity, and the internal diameter of linkage section is R1, and the internal diameter of the first expansion cavity is R2, wherein, and R1 < R2; Outlet section, one end of outlet section is connected with the first expansion cavity, and the internal diameter of outlet section is R3, wherein, R3 < R2.
Further, the height of the first expansion cavity is H, H=0.25c/f, and wherein, c is the velocity of sound of the medium in the first expansion cavity, and f is the frequency of noise in inner chamber.
Further, the sound deadening capacity of the first expansion cavity is LTL, and LTL=10 × lg [1+1/4 (m-1/m) 2], wherein, m > 1, m is the divergence ratio of the first expansion cavity.
Further, m=S/S1, wherein, S is the area of the cross section of the first expansion cavity; S1 is the area of the cross section of linkage section.
Further, the number of the first resonance part is multiple.
Further, the number of the first resonance part is N, wherein, and 1≤N≤4.
Further, baffler also comprises: the second resonance part, and be arranged in dome main body, the second resonance part has the second expansion cavity; Wherein, the height of the first expansion cavity of the first resonance part is greater than the height of the second expansion cavity.
Further, baffler also comprises: the second resonance part, and be arranged in dome main body, the second resonance part has the second expansion cavity; Wherein, the internal diameter of the first expansion cavity of the first resonance part is greater than the internal diameter of the second expansion cavity.
Further, dome main body is decussate texture, and dome main body is provided with mounting hole, and the first resonance part and the second resonance part are arranged in the dome main body of decussate texture, and is positioned at the opposite side of mounting hole and the symmetry axis along mounting hole is arranged.
According to a further aspect in the invention, provide a kind of compressor, comprise baffler, baffler is above-mentioned baffler.
Apply technological scheme of the present invention, dome main body arranges the first resonance part with dome body lumen, make the sound wave in inner chamber occur reflect and cancel out each other in the first resonance part, play and reduce sound wave frequency in inner chamber, thus make silencing apparatus play the effect reducing noise.First resonance part is set and effectively can eliminates the strong dipole acoustic vibration noise that baffler excites.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of a kind of baffler in prior art;
Fig. 2 shows the structural representation of another kind of baffler in prior art;
Fig. 3 shows the side view of Fig. 2;
Fig. 4 shows the structural representation at first visual angle of the embodiment according to baffler of the present invention;
Fig. 5 shows the structural representation at second visual angle of the embodiment according to baffler of the present invention;
Fig. 6 shows the cross-sectional view of the embodiment of the resonance part according to baffler of the present invention; And
Fig. 7 shows the cross-sectional view of the embodiment according to baffler of the present invention.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10 ', baffler; 11 ', relief opening;
10, dome main body; 11, mounting hole; 20, the first resonance part; 21, the first expansion cavity; 22, linkage section; 23, outlet section; 30, the second resonance part; 31, the second expansion cavity; 32, the second linkage section; 33, the second outlet section.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 4 and Figure 5, according to the invention provides a kind of baffler, this baffler comprises dome main body 10 and the first resonance part 20.First resonance part 20 has inner chamber.First resonance part 20 to be arranged in dome main body 10 and and intracavity inter-connection, the sound wave in inner chamber occurs to reflect and cancels out each other to reduce the noise of inner chamber in the first resonance part 20.
In the present embodiment, dome main body 10 arranges the first resonance part 20 with dome main body 10 inner chamber, make the sound wave in inner chamber occur reflect and cancel out each other in the first resonance part 20, play and reduce sound wave frequency in inner chamber, thus make silencing apparatus play the effect reducing noise.First resonance part 20 is set and effectively eliminates the strong dipole acoustic vibration noise that baffler excites.
As shown in Figure 6, wherein, the first resonance part 20 comprises linkage section 22, the first end of linkage section 22 and intracavity inter-connection.First resonance part 20 also comprises the first expansion cavity 21 and outlet section 23.Second end of linkage section 22 is connected with the first expansion cavity 21, and the internal diameter of linkage section 22 is R1, and the internal diameter of the first expansion cavity 21 is R2, wherein, and R1 < R2.One end of outlet section 23 is connected with the first expansion cavity 21, and the internal diameter of outlet section 23 is R3, wherein, and R3 < R2.In dome main body 10 upper of baffler, set up the first expansion cavity 21 muffler structure.The noise reduction principle of the first expansion cavity 21 is the change expanded by the pipeline of the first expansion cavity 21, sound wave is formed in expanding duct and reflects and cancel out each other, effectively can reduce the aerodynamic noise in the pipeline of the first expansion cavity 21.Then the air-flow piercing device noise that baffler overall structure causes is effectively reduced.
Wherein, the internal diameter R1 of the linkage section 22 of the first resonance part 20 is arranged to the internal diameter R2 being less than the first expansion cavity 21, the internal diameter R3 of the outlet section 23 of the first resonance part 20 is arranged to be less than the first expansion cavity 21 internal diameter R2.Strengthen the performance muffler of baffler further.
Further, the height of the first expansion cavity 21 is H, H=0.25c/f, and wherein, c is the velocity of sound of the medium in the first expansion cavity 21, and f is the frequency of noise in inner chamber.The structure of the first expansion cavity 21 can be arranged according to the main noise frequency f in the inner chamber of dome main body 10, the structure of the corresponding a kind of expansion cavity of each main noise frequency f.Make baffler carry out noise reduction to noise targetedly like this, thus effectively add the sound deadening of baffler.
The sound deadening capacity of the first expansion cavity 21 is LTL, and LTL=10 × lg [1+1/4 (m-1/m) 2], wherein, m > 1, m is the divergence ratio of the first expansion cavity 21.Wherein, m=S/S1, S are the area of the cross section of the first expansion cavity 21.S1 is the area of the cross section of linkage section 22.Such setting further enhances the sound deadening of baffler, and wherein, lg [1+1/4 (m-1/m) 2] is a logarithmic function, and it represents with 10 for the truth of a matter, [1+1/4 (m-1/m)
2] be the logarithmic function of index.
As shown in Figure 4 and Figure 5, the number of the first resonance part 20 is multiple.Wherein, when only arranging first resonance part 20 and just can playing noise reduction, only first resonance part 20 can be set in dome main body 10.
Preferably, the number of the first resonance part 20 is N, wherein, and 1≤N≤4.Can arrange the number of resonance part according to the concrete structure of baffler, the number of the first resonance part 20 of general baffler just can reach good erasure effect at 1 to 4.Such setting can effectively reduce the noise in dome main body 10.
As shown in Figure 7, baffler also comprises the second resonance part 30.Second resonance part 30 is arranged in dome main body 10, and the second resonance part 30 has the second expansion cavity 31 and the second linkage section 32 and the second outlet section 33.Second linkage section 32 be connected with dome main body 10 and with the intracavity inter-connection of dome main body 10, the internal diameter of the second linkage section 32 is less than the internal diameter of the second resonance part 30.One end of second outlet section 33 is arranged on the second expansion cavity 31, and the other end of the second outlet section 33 is relief opening.Wherein, the height of the first expansion cavity 21 of the first resonance part 20 is greater than the height of the second expansion cavity 31.Namely the structure of the first resonance part 20 is different from the structure of the second resonance part 30, can carry out noise reduction for the noise of two kinds of different frequencies.
Preferably, the internal diameter of the first expansion cavity 21 of the first resonance part 20 is greater than the internal diameter of the second expansion cavity 31.Namely in the present embodiment, the height of the first expansion cavity 21 of the first resonance part 20 and internal diameter can be arranged to all different with internal diameter from the height of the second expansion cavity 31 of the second resonance part 30, also can be set to the identical and highly different expansion cavity of internal diameter.Also can be the expansion cavity that internal diameter is identical and highly not identical.Effective noise reduction can be carried out like this for the noise of different frequency.
Wherein, dome main body 10 is decussate texture.Dome main body 10 is provided with mounting hole 11, the first resonance part 20 and the second resonance part 30 are arranged in the dome main body 10 of decussate texture, and are positioned at the opposite side of mounting hole 11 and the symmetry axis along mounting hole 11 is arranged.Be arranged so that baffler has better performance muffler like this.
Baffler in above-described embodiment, can also be used in Compressor Technology field, namely the invention provides a kind of compressor, and this compressor comprises baffler, and baffler is the baffler in above-described embodiment.
By setting up expansion cavity muffler structure at baffler, the aerodynamic noise in pipeline effectively can be reduced.Expansion cavity muffler structure principle is the change by pipeline divergence ratio, make on the one hand sound wave in expanding duct namely in the first expansion cavity 21 of the present invention or the second expansion cavity 31 formation reflect and cancel out each other; On the other hand baffler is effectively reduced in the pressure pulsation of exhaust ports, reduce the eddy current crack of exhaust ports.Simultaneously according to expansion cavity muffler structure, can set different bafflers, the noise for different frequency point carries out noise reduction.By adopting single expansion cavity or multiple expansion cavity structure, reaching and the multi-frequency section of compressor is eliminated the noise, reducing compressor noise with this.The compressor with this baffler is made to have good sound deadening.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
Apply technological scheme of the present invention, dome main body arranges the first resonance part with dome body lumen, make the sound wave in inner chamber occur reflect and cancel out each other in the first resonance part, play and reduce sound wave frequency in inner chamber, thus make silencing apparatus play the effect reducing noise.First resonance part is set and effectively eliminates the strong dipole acoustic vibration noise that baffler excites.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a baffler, is characterized in that, comprising:
Dome main body (10), has inner chamber;
First resonance part (20), be arranged at described dome main body (10) upper and with described intracavity inter-connection, the sound wave in described inner chamber occurs to reflect and cancels out each other to reduce the noise of described inner chamber in described first resonance part (20).
2. baffler according to claim 1, is characterized in that, described first resonance part (20) comprises linkage section (22), the first end of described linkage section (22) and described intracavity inter-connection.
3. baffler according to claim 2, is characterized in that, described first resonance part (20) also comprises:
First expansion cavity (21), second end of described linkage section (22) is connected with described first expansion cavity (21), the internal diameter of described linkage section (22) is R1, the internal diameter of described first expansion cavity (21) is R2, wherein, R1 < R2;
Outlet section (23), one end of described outlet section (23) is connected with described first expansion cavity (21), and the internal diameter of described outlet section (23) is R3, wherein, R3 < R2.
4. baffler according to claim 3, is characterized in that, the height of described first expansion cavity (21) is H,
H＝0.25c/f，
Wherein, c is the velocity of sound of the medium in described first expansion cavity (21), and f is the frequency of noise in described inner chamber.
5. baffler according to claim 3, is characterized in that, the sound deadening capacity of described first expansion cavity (21) is LTL, and LTL=10 × lg [1+1/4 (m-1/m)
2], wherein, m > 1, m is the divergence ratio of described first expansion cavity (21).
6. baffler according to claim 5, is characterized in that, described m=S/S1, wherein,
S is the area of the cross section of described first expansion cavity (21);
S1 is the area of the cross section of described linkage section (22).
7. baffler according to claim 1, is characterized in that, the number of described first resonance part (20) is multiple.
8. baffler according to claim 7, is characterized in that, the number of described first resonance part (20) is N, wherein, and 1≤N≤4.
9. baffler according to claim 7, is characterized in that, described baffler also comprises:
Second resonance part (30), be arranged on described dome main body (10), described second resonance part (30) has the second expansion cavity (31);
Wherein, the height of first expansion cavity (21) of described first resonance part (20) is greater than the height of described second expansion cavity (31).
10. baffler according to claim 7, is characterized in that, described baffler also comprises:
Second resonance part (30), be arranged on described dome main body (10), described second resonance part (30) has the second expansion cavity (31);
Wherein, the internal diameter of first expansion cavity (21) of described first resonance part (20) is greater than the internal diameter of described second expansion cavity (31).
11. bafflers according to claim 9 or 10, it is characterized in that, described dome main body (10) is decussate texture, described dome main body (10) is provided with mounting hole (11), described first resonance part (20) and described second resonance part (30) are arranged in the dome main body (10) of described decussate texture, and are positioned at the opposite side of described mounting hole (11) and the symmetry axis along described mounting hole (11) is arranged.
12. 1 kinds of compressors, comprise baffler, it is characterized in that, the baffler of described baffler described in any one of claim 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903971.1A CN105317657A (en) | 2015-12-08 | 2015-12-08 | Silencer and compressor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510903971.1A CN105317657A (en) | 2015-12-08 | 2015-12-08 | Silencer and compressor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105317657A true CN105317657A (en) | 2016-02-10 |
Family
ID=55245768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510903971.1A Pending CN105317657A (en) | 2015-12-08 | 2015-12-08 | Silencer and compressor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105317657A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016771A (en) * | 2006-03-31 | 2007-01-25 | Sanyo Electric Co Ltd | Rotary compressor |
| JP2010037973A (en) * | 2008-08-01 | 2010-02-18 | Panasonic Corp | Rotary compressor |
| CN202254196U (en) * | 2011-07-27 | 2012-05-30 | 浙江方宏空调设备有限公司 | Vehicle air conditioning pipeline pressure silencer |
| CN205190156U (en) * | 2015-12-08 | 2016-04-27 | 珠海凌达压缩机有限公司 | Silencer and compressor with same |
-
2015
- 2015-12-08 CN CN201510903971.1A patent/CN105317657A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016771A (en) * | 2006-03-31 | 2007-01-25 | Sanyo Electric Co Ltd | Rotary compressor |
| JP2010037973A (en) * | 2008-08-01 | 2010-02-18 | Panasonic Corp | Rotary compressor |
| CN202254196U (en) * | 2011-07-27 | 2012-05-30 | 浙江方宏空调设备有限公司 | Vehicle air conditioning pipeline pressure silencer |
| CN205190156U (en) * | 2015-12-08 | 2016-04-27 | 珠海凌达压缩机有限公司 | Silencer and compressor with same |
Non-Patent Citations (1)
| Title |
|---|
| 周新祥: "《噪声控制及应用实例》", 《噪声控制及应用实例》 * |
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Application publication date: 20160210 |