CN107401510A - Compressor air-discharging denoising structure and compressor - Google Patents
Compressor air-discharging denoising structure and compressor Download PDFInfo
- Publication number
- CN107401510A CN107401510A CN201710805250.6A CN201710805250A CN107401510A CN 107401510 A CN107401510 A CN 107401510A CN 201710805250 A CN201710805250 A CN 201710805250A CN 107401510 A CN107401510 A CN 107401510A
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- CN
- China
- Prior art keywords
- compressor
- expansion chamber
- discharging
- pipe
- end cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007599 discharging Methods 0.000 title claims abstract description 37
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The present invention relates to a kind of compressor air-discharging denoising structure and compressor, wherein, compressor air-discharging denoising structure includes the end cap located at compressor air-discharging end, the end cap is provided with exhaust outlet, downtake pipe, second exhaust pipe and the first expansion chamber are provided with the end cap, the downtake pipe, first expansion chamber, the second exhaust pipe and the exhaust outlet are in fluid communication, and the air-flow of the downtake pipe discharge passes sequentially through first expansion chamber, the second exhaust pipe and exhaust outlet discharge compressor.The present invention sets expansion chamber in end cap, expansion chamber is entered by blast pipe by the gas after rotor compression in compressor, using expansion type noise-cancelling theory after expansion is eliminated the noise, gas discharges compressor by the exhaust outlet on blast pipe and end cap, by way of built-in expansion type exhausting and denoising, compressor air-discharging noise can be effectively reduced, solves the problems, such as limited for noise reduction installing space, higher cost of investment will not be produced.
Description
Technical field
The present invention relates to compressor field, more particularly to a kind of compressor air-discharging denoising structure and compressor.
Background technology
Helical-lobe compressor carries out air-breathing, compression and exhaust due to its high speed, periodically to gas, often produce compared with
Big noise, sometimes work noise can reach more than 100dB (A), can produce large effect for environment and personnel health.
In order to reduce compressor operating noise, people often using compressor integrally insulate against sound or external silencing apparatus by the way of, but can increase
Add cost of investment, and compressor needs larger installing space.
The content of the invention
The purpose of the present invention is to propose to a kind of compressor air-discharging denoising structure and compressor, and it can solve the problem that existing compressor
The problem of exhausting silencer noise reduction mode cost is high, and required installing space is big.
To achieve the above object, the invention provides a kind of compressor air-discharging denoising structure, it includes arranging located at compressor
The end cap at gas end, the end cap are provided with exhaust outlet, and downtake pipe, second exhaust pipe and the first expansion are provided with the end cap
Chamber, the downtake pipe, first expansion chamber, the second exhaust pipe and the exhaust outlet are in fluid communication, and described first
The air-flow of blast pipe discharge passes sequentially through first expansion chamber, the second exhaust pipe and exhaust outlet discharge compressor.
Preferably or in alternative embodiment, the second expansion chamber and the 3rd blast pipe are additionally provided with the end cap one, described the
Two blast pipes, second expansion chamber, the 3rd blast pipe and the exhaust outlet are in fluid communication, the downtake pipe discharge
Air-flow pass sequentially through first expansion chamber, the second exhaust pipe, second expansion chamber, the 3rd blast pipe and institute
State exhaust outlet discharge compressor.
One preferably or in alternative embodiment, the sectional area of first expansion chamber is more than the section of the downtake pipe
Product.
One preferably or in alternative embodiment, the sectional area of first expansion chamber is more than the section of the second exhaust pipe
Product.
One preferably or in alternative embodiment, first expansion chamber is surrounded by the inwall of dividing plate and the end cap.
One preferably or in alternative embodiment, the sectional area of second expansion chamber is more than the section of the second exhaust pipe
Product.
One preferably or in alternative embodiment, the sectional area of second expansion chamber is more than the section of the 3rd blast pipe
Product.
One preferably or in alternative embodiment, second expansion chamber is surrounded by the inwall of dividing plate and the end cap.
One preferably or in alternative embodiment, first expansion chamber is surrounded by the inwall of dividing plate and the end cap, and
First expansion chamber and the second expansion chamber common sparing dividing plate.
To achieve the above object, the invention provides a kind of compressor, it includes the compressor in any of the above-described embodiment
Exhausting and denoising structure.
One preferably or in alternative embodiment, compressor includes helical-lobe compressor.
Based on above-mentioned technical proposal, the present invention at least has the advantages that：
The present invention sets expansion chamber in end cap, is entered in compressor by the gas after rotor compression by blast pipe and expanded
Chamber, using expansion type noise-cancelling theory after expansion is eliminated the noise, gas discharges compressor by the exhaust outlet on blast pipe and end cap,
By way of built-in expansion type exhausting and denoising, compressor air-discharging noise can be effectively reduced, makes full use of the space in end cap,
Can solve the problem that for noise reduction installing space it is limited the problem of, higher cost of investment will not be produced.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of compressor air-discharging denoising structure provided in an embodiment of the present invention.
Label in accompanying drawing：
1- end caps；2- downtake pipes；3- second exhaust pipes；The blast pipes of 4- the 3rd；The expansion chambers of 5- first；6- second expands
Chamber；7- exhaust outlets；8- dividing plates.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely retouched
State.Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Bright embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of the description present invention and simplifies description, rather than instruction or the dress for implying meaning
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention is protected
The limitation of scope.
As shown in figure 1, it is the illustrative examples of compressor air-discharging denoising structure provided by the invention, in the schematic reality
Apply in example, compressor air-discharging denoising structure includes the end cap 1 located at compressor air-discharging end, and end cap 1 is provided with exhaust outlet 7, in end cap 1
Provided with downtake pipe 2, the expansion chamber 5 of second exhaust pipe 3 and first, downtake pipe 2, the first expansion chamber 5, second exhaust pipe 3
It is in fluid communication with exhaust outlet 7, the air-flow that downtake pipe 2 is discharged passes sequentially through the first expansion chamber 5, second exhaust pipe 3 and exhaust
Mouth 7 discharges compressors.
Compressor air-discharging denoising structure is built in the end cap at compressor air-discharging end by the present invention, and including expansion chamber and row
Tracheae, compressor is interior to enter expansion chamber by the gas after rotor compression by blast pipe, using expansion type noise-cancelling theory by swollen
After swollen noise elimination, gas discharges compressor by the exhaust outlet on blast pipe and end cap, passes through the side of built-in expansion type exhausting and denoising
Formula, can reduce the exhaust noise (reducing noise figure up to more than 10dBA for band segment) of compressor, and can solve the problem that pair
In noise reduction installing space is limited the problem of, cost of investment of the user for noise countermeasure is reduced.
In the illustrative examples of above-mentioned compressor exhausting and denoising structure, the second expansion chamber 6 is also provided with end cap 1
With the 3rd blast pipe 4, second exhaust pipe 3, the second expansion chamber 6, the 3rd blast pipe 4 and exhaust outlet 7 are in fluid communication, downtake pipe
The air-flow of 2 discharges passes sequentially through the first expansion chamber 5, second exhaust pipe 3, the second expansion chamber 6, the 3rd blast pipe 4 and the row of exhaust outlet 7
Go out compressor.
The first expansion chamber 5 is entered by downtake pipe 2 first by the gas after rotor compression in compressor, utilizes expansion type
After once expanding noise elimination, gas is eliminated the noise into the second expansion chamber 6 by second exhaust pipe 3 for noise-cancelling theory, finally by the
Exhaust outlet 7 on three blast pipes 4 and the end cap 1 at compressor air-discharging end discharges compressor, can effectively reduce compressor air-discharging and make an uproar
Sound, the space in end cap 1 is made full use of, higher cost of investment will not be produced, and can solve the problem that have for noise reduction installing space
The problem of limit.
Certainly, one can be set in actual setting, in end cap 1, more than two, or three expansion chamber, but considered
After being had more to expansion chamber, exhaust crushing can also increase, it is therefore preferable that 1~2 expansion chamber.And in the feelings for setting multiple expansion chambers
Under condition, it may be considered that expansion chamber is connected and the set-up mode in parallel being combined.
In above-described embodiment, the sectional area of the first expansion chamber 5 is more than the sectional area of downtake pipe 2.First expansion chamber 5
Sectional area is more than the sectional area of second exhaust pipe 3.
In above-described embodiment, the sectional area of the second expansion chamber 6 is more than the sectional area of second exhaust pipe 3.Second expansion chamber 6
Sectional area is more than the sectional area of the 3rd blast pipe 4.
In above-described embodiment, the first expansion chamber 5 can be surrounded by the inwall of dividing plate 8 and end cap 1, can make full use of end
Space in lid 1, it is easy to process, higher cost of investment will not be produced.
In above-described embodiment, the second expansion chamber 6 can be surrounded by the inwall of dividing plate 8 and end cap 1, can make full use of end
Space in lid 1, it is easy to process, higher cost of investment will not be produced.
In above-described embodiment, the first expansion chamber 5 and the second expansion chamber 6 can make full use of end with common sparing dividing plate 8
Space in lid 1, and it is easy to process, higher cost of investment will not be produced.
Dividing plate 8 in above-mentioned each embodiment can use 6mm thickness Q345R steel plates to manufacture, and be welded on compressor air-discharging end
End cap 1 inside.
Blast pipe in above-mentioned each embodiment can use seamless steel pipe material, be welded on dividing plate 8.Each blast pipe
Cross-sectional area can be with different.
Compressor air-discharging denoising structure provided in an embodiment of the present invention its sound deadening capacity-sound transmission loss TL can be calculated by following formula：
In formula：M is divergence ratio, i.e. the ratio between expansion chamber sectional area and blast pipe sectional area；K is (circle) wave number, k=2 π f/c,
F is frequency of noise elimination, and c is the velocity of sound；L is expansion cavity length.
The concrete application of compressor air-discharging denoising structure provided in an embodiment of the present invention is set forth below.
It is 2970rpm for rotating speed, the male rotor number of teeth is 5 compressor, and its noise fundamental frequency is about 2970/5 ≈ 250Hz,
Compressor operating noise is concentrated mainly in fundamental frequency and its frequency multiplication, and based on middle low frequency.
It is 0.0046m2 for blast pipe sectional area, expansion chamber sectional area is 0.0611m2 compressor, when expansion chamber is grown
Spend for 0.22m when, its sound transmission loss to frequency of noise elimination 500Hz2 frequencys multiplication is 16dB.With reference to two expansions being cascaded
Chamber, it is feasible that it reduces 5dB~8dB to compressor air-discharging noise synthesis sound pressure level.
Above-mentioned sound transmission loss refers to that exhaust disengaging compressor air-discharging denoising structure sound pressure level reduces 16db, but exhaust noise
It is considered as muffler inlet noise and outlet noise.Such as：Muffler inlet sound pressure level is a, is exported as b, but exhaust noise
A and b parts should be considered.
With reference to the different qualities of different compressors, the parameters such as divergence ratio, frequency of noise elimination and expansion cavity length can be carried out
Adjustment.
Present invention also offers a kind of embodiment of compressor, and in this embodiment, compressor includes any of the above-described implementation
Compressor air-discharging denoising structure in example.
In above-described embodiment, compressor can include helical-lobe compressor.
Compressor air-discharging denoising structure provided in an embodiment of the present invention can produce the effect for reducing compressor air-discharging noise,
Reduction effect can be equally played for compressor overall operation noise.
In the description of the invention, it is to be understood that limit zero using the word such as " first ", " second ", " the 3rd "
Part, it is only for be easy to distinguish above-mentioned parts, such as do not have Stated otherwise, above-mentioned word does not have special contain
Justice, therefore it is not intended that limiting the scope of the invention.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical scheme, it all should cover among the claimed technical scheme scope of the present invention.
Claims (11)
- A kind of 1. compressor air-discharging denoising structure, it is characterised in that：Including the end cap (1) located at compressor air-discharging end, the end Lid (1) is provided with exhaust outlet (7), and downtake pipe (2), second exhaust pipe (3) and the first expansion chamber are provided with the end cap (1) (5), the downtake pipe (2), first expansion chamber (5), the second exhaust pipe (3) and the exhaust outlet (7) fluid Connection, the air-flow of the downtake pipe (2) discharge pass sequentially through first expansion chamber (5), the second exhaust pipe (3) and The exhaust outlet (7) discharges compressor.
- 2. compressor air-discharging denoising structure as claimed in claim 1, it is characterised in that：Second is additionally provided with the end cap (1) Expansion chamber (6) and the 3rd blast pipe (4), the second exhaust pipe (3), second expansion chamber (6), the 3rd blast pipe (4) it is in fluid communication with the exhaust outlet (7), the air-flow of downtake pipe (2) discharge passes sequentially through first expansion chamber (5), the second exhaust pipe (3), second expansion chamber (6), the 3rd blast pipe (4) and the exhaust outlet (7) discharge Compressor.
- 3. compressor air-discharging denoising structure as claimed in claim 1, it is characterised in that：The section of first expansion chamber (5) Sectional area of the product more than the downtake pipe (2).
- 4. compressor air-discharging denoising structure as claimed in claim 1, it is characterised in that：The section of first expansion chamber (5) Sectional area of the product more than the second exhaust pipe (3).
- 5. compressor air-discharging denoising structure as claimed in claim 1, it is characterised in that：First expansion chamber (5) by every The inwall of plate (8) and the end cap (1) surrounds.
- 6. compressor air-discharging denoising structure as claimed in claim 2, it is characterised in that：The section of second expansion chamber (6) Sectional area of the product more than the second exhaust pipe (3).
- 7. compressor air-discharging denoising structure as claimed in claim 2, it is characterised in that：The section of second expansion chamber (6) Sectional area of the product more than the 3rd blast pipe (4).
- 8. compressor air-discharging denoising structure as claimed in claim 2, it is characterised in that：Second expansion chamber (6) by every The inwall of plate (8) and the end cap (1) surrounds.
- 9. compressor air-discharging denoising structure as claimed in claim 8, it is characterised in that：First expansion chamber (5) by every The inwall of plate (8) and the end cap (1) surrounds, and first expansion chamber (5) and the second expansion chamber (6) common sparing every Plate (8).
- A kind of 10. compressor, it is characterised in that：Including the compressor air-discharging noise reduction knot as described in any one of claim 1~9 Structure.
- 11. compressor as claimed in claim 10, it is characterised in that：Including helical-lobe compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805250.6A CN107401510A (en) | 2017-09-08 | 2017-09-08 | Compressor air-discharging denoising structure and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805250.6A CN107401510A (en) | 2017-09-08 | 2017-09-08 | Compressor air-discharging denoising structure and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107401510A true CN107401510A (en) | 2017-11-28 |
Family
ID=60397864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710805250.6A Pending CN107401510A (en) | 2017-09-08 | 2017-09-08 | Compressor air-discharging denoising structure and compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN107401510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356818A (en) * | 2018-11-30 | 2019-02-19 | 浙江鸿友压缩机制造有限公司 | A kind of air compressor intake muffler |
| CN110118203A (en) * | 2019-06-25 | 2019-08-13 | 明尼苏达矿业制造特殊材料（上海）有限公司 | A kind of noise reduction components |
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| JP2004270650A (en) * | 2003-03-12 | 2004-09-30 | Honda Motor Co Ltd | Exhaust device of small craft |
| US20070201990A1 (en) * | 2003-12-23 | 2007-08-30 | Whirlpool S.A. | Discharge System for Compressors |
| CN101454568A (en) * | 2006-05-26 | 2009-06-10 | 三电有限公司 | Compressor |
| CN201724362U (en) * | 2010-06-30 | 2011-01-26 | 广东美的电器股份有限公司 | Inverter air conditioner silencer |
| CN207178219U (en) * | 2017-09-08 | 2018-04-03 | 珠海格力电器股份有限公司 | Compressor air-discharging denoising structure and compressor |
-
2017
- 2017-09-08 CN CN201710805250.6A patent/CN107401510A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004270650A (en) * | 2003-03-12 | 2004-09-30 | Honda Motor Co Ltd | Exhaust device of small craft |
| US20070201990A1 (en) * | 2003-12-23 | 2007-08-30 | Whirlpool S.A. | Discharge System for Compressors |
| CN101454568A (en) * | 2006-05-26 | 2009-06-10 | 三电有限公司 | Compressor |
| CN201724362U (en) * | 2010-06-30 | 2011-01-26 | 广东美的电器股份有限公司 | Inverter air conditioner silencer |
| CN207178219U (en) * | 2017-09-08 | 2018-04-03 | 珠海格力电器股份有限公司 | Compressor air-discharging denoising structure and compressor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356818A (en) * | 2018-11-30 | 2019-02-19 | 浙江鸿友压缩机制造有限公司 | A kind of air compressor intake muffler |
| CN109356818B (en) * | 2018-11-30 | 2024-03-19 | 浙江鸿友压缩机制造有限公司 | Air compressor air inlet silencer |
| CN110118203A (en) * | 2019-06-25 | 2019-08-13 | 明尼苏达矿业制造特殊材料（上海）有限公司 | A kind of noise reduction components |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20171128 |