CN204961415U - Fan silencer - Google Patents
Fan silencer Download PDFInfo
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- CN204961415U CN204961415U CN201520509825.6U CN201520509825U CN204961415U CN 204961415 U CN204961415 U CN 204961415U CN 201520509825 U CN201520509825 U CN 201520509825U CN 204961415 U CN204961415 U CN 204961415U
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- silencing apparatus
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- urceolus
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Abstract
The utility model relates to a fan silencer, the installation component who includes silencer urceolus, silencer inner tube, ring baffle, inhales the sound cotton and be used for being connected with the fan, silencer inner tube suit is inhaled the sound cotton and is placed on the inner wall of silencer urceolus in the silencer urceolus, and the one end of silencer urceolus and silencer inner tube is connected with the ring baffle, and its innovation part lies in: silencer inner tube and silencer urceolus between form and inhale the sound chamber, be provided with the several in the silencer inner tube and inhale sound opening and the reverse sound opening piece of inhaling of several, backward inhale sound opening piece and adopt the alternating expression range, the length of silencer urceolus and silencer inner tube be 1.2-1.8 times of silencer urceolus diameter. The utility model has the advantages of for: 1. The wind energy can be guaranteed greatly to acquire by accessible formula air intake. 2. Backward inhale the chip layout of sound opening, play absorbing effect, and it is mobile not obstruct the wind speed. 3. Backward inhaling sound opening piece alternating expression and arranging, the noise is absorbed to very big limit, plays the effect of making an uproar of falling.
Description
Technical field
The utility model relates to a kind of fans silencer.
Background technique
The purposes of blower fan is wide, relates to boats and ships, mine, multiple field such as coal, because blower fan plays gas exchange action, multiplexly to close, and in the majority in less region, space.In such a case, the running of blower fan can produce noise, have impact on the normal work of people greatly.To manufacturing shop and Work places, China requires that noise limit is at≤90 decibels, and current blower fan is not on the market when taking the noise > 100 decibels running generation when eliminating the noise, and is greater than required standard noise figure.
Mainly fans silencer is adopted to the noise reduction of blower fan, existing fans silencer mainly utilizes and reduces air inlet of air duct air power noise, intake grill is divided into several sections of noises carrying out eliminating windage and being separated blower interior, soundproof effect is good, but also there are some problems:
1. a lot of anti-noise plate of fans silencer indoor design, hinders the flowing of wind speed.
2. silencing apparatus indoor design is complicated, brings certain difficulty to processing installation, improves manufacture cost.
3. volume is large, heavy, is not easy to carrying etc.
The utility model patent of China Patent No. 201120312661X discloses a kind of rice machine blower fan silencer, comprise case, interior conduit is provided with in case, sound-absorbing porous material is filled with between case and interior conduit, the air intake place of case is fixedly installed air door through screw, is also provided with some perforated plates in described interior conduit.It is only have several through hole in interior conduit, noise through interior conduit due to without any stop, most of noise can pass to outside from by interior conduit, only has fraction noise can be absorbed by sound-absorbing material in through hole.So the soundproof effect of structure does not understand.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of noise reduction desirable, and the flowing of wind speed can not be hindered, the fans silencer of reasonable in design, this fans silencer is ensureing that blower fan obtains enough air outputs while, play again desirable noise reduction, solve above-mentioned prior art Problems existing.
The technological scheme solved the problems of the technologies described above is: a kind of fans silencer, comprise silencing apparatus urceolus, silencing apparatus inner core, ring baffle, acoustical cotton and the mounting assembly for being connected with blower fan, silencing apparatus inner core is sleeved in silencing apparatus urceolus, acoustical cotton is placed on the inwall of silencing apparatus urceolus, silencing apparatus urceolus is connected with ring baffle with one end of silencing apparatus inner core, sound absorption cavity is formed between described silencing apparatus inner core and silencing apparatus urceolus, several sound-absorbing opening and several reverse sound-absorbing opening sheet is provided with on silencing apparatus inner core, reverse sound-absorbing opening sheet adopts alternating expression arrangement, the other end of described silencing apparatus inner core is connected with silencing apparatus urceolus, described mounting assembly comprises annular plastics packing ring, annular mounting plate and connecting plate, annular plastics packing ring is arranged on annular mounting plate, annular material packing ring and annular mounting plate have attachment hole, annular mounting plate is connected with ring baffle by connecting plate, described silencing apparatus urceolus and the length of silencing apparatus inner core are 1.2 ~ 1.8 times of silencing apparatus outer barrel diameter.
Described reverse sound-absorbing opening sheet is by being connected to the opening transition arc of silencing apparatus inner core and forming with the opening circular arc that opening transition arc is integrally connected, the circular arc of opening circular arc and opening transition arc is towards the opposite, the diameter of setting silencing apparatus urceolus is a, opening radius of arc is b, opening transition arc radius is c, and sound-absorbing A/F is d, and reverse sound-absorbing opening sheet peak is e to the height of silencing apparatus inner core inwall, the width of reverse sound-absorbing opening sheet is g, and reverse sound-absorbing opening sheet length is f;
The diameter a of silencing apparatus urceolus and the proportionate relationship of opening radius of arc b are:
The ratio of opening transition arc radius c and opening radius of arc b:
,
The ratio of sound-absorbing A/F d and opening radius of arc b:
,
The height e of reverse sound-absorbing opening sheet peak to silencing apparatus inner core inwall and the ratio of opening radius of arc b:
,
The width g of reverse sound-absorbing opening sheet and the ratio of opening radius of arc b:
,
The ratio of reverse sound-absorbing opening sheet length f and opening radius of arc b:
.
Further technological scheme of the present utility model is: described silencing apparatus urceolus and the length of silencing apparatus inner core are silencing apparatus outer barrel diameter 1.5 times.
One end and the silencing apparatus urceolus joint of described silencing apparatus inner core adopt arc transition.
The utility model be remain intake grill size constant when carry out noise-reducing design, utilize inner counter to the design principle of sound-absorbing mouth.Ensureing the air output in air port simultaneously, play the effect of noise elimination.The more existing structural design design of fans silencer of the utility model is more optimized more rationally, and air output is large, and the gas that can discharge is more, and efficiency is high.Its tool has the following advantages:
1. oppositely sound-absorbing opening sheet designs (the topmost innovative point of the utility model), plays sound-absorbing effect, excellent noise reduction effect, and does not hinder wind speed to flow.When sound spreads out of from blower interior, sound is along silencing pot inwall, and import sound absorption cavity inside into by reverse sound-absorbing opening sheet and be isolated, as shown in Figure 5, sound is finally dissolved by acoustical cotton.Launch with 1/4th longitudinal cross-section H1-H2 arc length, as shown in Figure 4, in 6 cross sections of unit horizontal A-A, B-B, C-C, D-D, E-E, F-F, often by a cross section, sound is by consumption unit volume.Suppose there are five reverse sound-absorbing opening sheets in 1/4th arc length, whole circumference will have 20, and each reverse sound-absorbing opening sheet can draw about 0.5% volume, and so a lateral cross section A-A can draw
sound-absorbing amount.If with the amount of sound spread out of in blower fan with 100 decibels of calculating, will 10% be reduced by the volume in A-A cross section, namely
decibel, when by B-B cross section, basis reduces by 10% again, namely
decibel, by that analogy, when by F-F cross section, by intake grill sound about 53 decibels.This is ideal value, and in actual applications, silencing pot is longer, and soundproof effect is better, but can affect and flow to air port wind-force size, therefore, between optimal silencing apparatus length should be 1.2 ~ 1.8 times of outer barrel diameter.
2. oppositely sound-absorbing opening sheet alternating expression arrangement, very big limit absorbs noise, plays Noise Reduction.
3. obstructiveless intake grill, can ensure greatly to obtain wind energy.The intake grill of intake grill of the present utility model and blower fan is isometrical, does not need reducing to be divided into several sections, can not hinder the flowing of wind speed, can ensure that blower fan obtains enough air outputs.
4. lightweight, be easy to carry.
5. project organization is simple, is convenient to manufacture, and cost is low.
Below, in conjunction with the accompanying drawings and embodiments the technical characteristics of the fans silencer of the utility model is further described.
Accompanying drawing explanation
Fig. 1: the fans silencer front sectional view of the utility model.
Fig. 2: the fans silencer right elevation of the utility model.
Fig. 3: the fans silencer structural representation (removing mounting assembly) of the utility model.
Reverse sound-absorbing opening sheet unfolded drawing between H1-H2 in Fig. 4: Fig. 3.
Fig. 5: the utility model sound-absorbing principle schematic.
Fig. 6: the utility model and axial fan connection diagram.
In figure: 1-silencing apparatus urceolus, 2-silencing apparatus inner core, 21-sound-absorbing opening, 3-ring baffle, 4-connecting plate, 5-annular mounting plate, 6-annular plastics packing ring, 7-attachment hole, 8-sound absorption cavity, 9-acoustical cotton, the reverse sound-absorbing opening sheet of 10-, 101-opening transition arc, 102-opening circular arc.
P1 represents the circular arc center of circle of opening transition arc, and P2 represents the circular arc center of circle of opening circular arc.
I represents the utility model fans silencer, and II represents axial fan.
Embodiment
Embodiment 1: a kind of fans silencer, as Figure 1-Figure 2, comprise silencing apparatus urceolus 1, silencing apparatus inner core 2, ring baffle 3, acoustical cotton 9 and the mounting assembly for being connected with blower fan, silencing apparatus inner core 2 is sleeved in silencing apparatus urceolus 1, certain distance is kept between silencing apparatus inner core 2 and silencing apparatus urceolus 1, acoustical cotton 9 is placed on the inwall of silencing apparatus urceolus, silencing apparatus urceolus is connected with ring baffle 3 with one end of silencing apparatus inner core, sound absorption cavity 8 is formed between described silencing apparatus inner core 2 and silencing apparatus urceolus 1, silencing apparatus inner core 2 is provided with several sound-absorbing opening 21 and several reverse sound-absorbing opening sheet 10, reverse sound-absorbing opening sheet adopts alternating expression regularly arranged (as shown in Figure 4), namely to keep at a certain distance away setting with two reverse sound-absorbing opening sheets adjacent in a line, in adjacent rows, in the reverse sound-absorbing opening sheet of a line lengthwise position between adjacent two reverse sound-absorbing opening sheets of another row.The other end and the silencing apparatus urceolus of described silencing apparatus inner core adopt arc transition to be connected, described mounting assembly comprises annular plastics packing ring 6, annular mounting plate 5 and connecting plate 4, annular plastics packing ring 6 is arranged on annular mounting plate 5, annular material packing ring and annular mounting plate have attachment hole 7, annular mounting plate is connected with ring baffle 3 by connecting plate 4, and described silencing apparatus urceolus and the length of silencing apparatus inner core are silencing apparatus outer barrel diameter about 1.5 times.
In the present embodiment, described reverse sound-absorbing opening sheet 10 is by being connected to the opening transition arc 101 of silencing apparatus inner core 2 and forming with the opening circular arc 102 that opening transition arc is integrally connected, the circular arc of opening circular arc and opening transition arc is towards the opposite, from Fig. 3, the circular arc center of circle of opening transition arc is positioned at its right side, and the circular arc center of circle of opening circular arc is positioned at the left side of opening transition arc.Reverse sound-absorbing opening sheet 10 adopts impact briquetting, embedded clamping can be taked to install or welding during installation.
The diameter of setting silencing apparatus urceolus is a, and opening radius of arc is b, and opening transition arc radius is c, sound-absorbing A/F is d, and reverse sound-absorbing opening sheet peak is e to the height of silencing apparatus inner core inwall, from Fig. 4, the width of reverse sound-absorbing opening sheet is g, and reverse sound-absorbing opening sheet length is f;
The diameter a of silencing apparatus urceolus and the proportionate relationship of opening radius of arc b are:
The ratio of opening transition arc radius c and opening radius of arc b:
,
The ratio of sound-absorbing A/F d and opening radius of arc b:
,
The height e of reverse sound-absorbing opening sheet peak to silencing apparatus inner core inwall and the ratio of opening radius of arc b:
,
The width g of reverse sound-absorbing opening sheet and the ratio of opening radius of arc b:
,
The ratio of reverse sound-absorbing opening sheet length f and opening radius of arc b:
.
The proportionate relationship of each size above, can ensure to obtain best noise reduction.As one conversion, the ratio of each size can adjust according to actual conditions, and its noise reduction can be subject to certain impact, but overall noise reduction should will than the fans silencer effect not being provided with reverse sound-absorbing opening sheet.
Working principle: the utility model fans silencer is arranged on the air inlet (as shown in Figure 6) of blower fan, the ring baffle 5 of fans silencer one end offers attachment hole 7, be connected with air inlet one end, place annular plastics packing ring 6 at baffle plate and blower fan port middle simultaneously, play damping, seal action.When fan operation, outside air flows to blower fan through fans silencer inner chamber, due to fans silencer inner flow passage and air inlet sizableness, therefore can not cause too large impact to blower fan air output.Can be spread out of the noise of motor, blade rotary generation after fan starting by intake grill, partial noise by runner to external diffusion, when noise is by reverse sound-absorbing opening sheet 10, can be delivered to sound absorption cavity 8 inner by noise.When noise is through multiple reverse sound-absorbing opening sheet 10, the noise that noise outwards discharges will reduce greatly.Be delivered to the noise inhaling cavity 8 inside to be dissolved by acoustical cotton, thus play noise elimination effect.
Claims (4)
1. a fans silencer, comprise silencing apparatus urceolus (1), silencing apparatus inner core (2), ring baffle (3), acoustical cotton (9) and the mounting assembly for being connected with blower fan, silencing apparatus inner core (2) is sleeved in silencing apparatus urceolus (1), acoustical cotton (9) is placed on the inwall of silencing apparatus urceolus, silencing apparatus urceolus is connected with ring baffle (3) with one end of silencing apparatus inner core, it is characterized in that: between described silencing apparatus inner core (2) and silencing apparatus urceolus (1), form sound absorption cavity (8), several sound-absorbing opening (21) and several reverse sound-absorbing opening sheet (10) is provided with in silencing apparatus inner core (2) is upper, reverse sound-absorbing opening sheet adopts alternating expression arrangement, the other end of described silencing apparatus inner core is connected with silencing apparatus urceolus, described mounting assembly comprises annular plastics packing ring (6), annular mounting plate (5) and connecting plate (4), annular plastics packing ring (6) is arranged on annular mounting plate (5), annular material packing ring and annular mounting plate have attachment hole (7), annular mounting plate is connected with ring baffle (3) by connecting plate (4), described silencing apparatus urceolus and the length of silencing apparatus inner core are 1.2 ~ 1.8 times of silencing apparatus outer barrel diameter.
2. fans silencer according to claim 1, it is characterized in that: described reverse sound-absorbing opening sheet (10) is by being connected to the opening transition arc (102) of silencing apparatus inner core (2) and forming with the opening circular arc (101) that opening transition arc is integrally connected, the circular arc of opening circular arc and opening transition arc is towards the opposite, the diameter of setting silencing apparatus urceolus is a, opening radius of arc is b, opening transition arc radius is c, sound-absorbing A/F is d, reverse sound-absorbing opening sheet peak is e to the height of silencing apparatus inner core inwall, the width of reverse sound-absorbing opening sheet is g, reverse sound-absorbing opening sheet length is f,
The diameter a of silencing apparatus urceolus and the proportionate relationship of opening radius of arc b are:
The ratio of opening transition arc radius c and opening radius of arc b:
,
The ratio of sound-absorbing A/F d and opening radius of arc b:
,
The height e of reverse sound-absorbing opening sheet peak to silencing apparatus inner core inwall and the ratio of opening radius of arc b:
,
The width g of reverse sound-absorbing opening sheet and the ratio of opening radius of arc b:
,
The ratio of reverse sound-absorbing opening sheet length f and opening radius of arc b:
.
3. fans silencer according to claim 1 and 2, is characterized in that: described silencing apparatus urceolus and the length of silencing apparatus inner core are silencing apparatus outer barrel diameter 1.5 times.
4. fans silencer according to claim 1 and 2, is characterized in that: one end and the silencing apparatus urceolus joint of described silencing apparatus inner core adopt arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509825.6U CN204961415U (en) | 2015-07-14 | 2015-07-14 | Fan silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509825.6U CN204961415U (en) | 2015-07-14 | 2015-07-14 | Fan silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204961415U true CN204961415U (en) | 2016-01-13 |
Family
ID=55056485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520509825.6U Expired - Fee Related CN204961415U (en) | 2015-07-14 | 2015-07-14 | Fan silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204961415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963899A (en) * | 2015-07-14 | 2015-10-07 | 柳州职业技术学院 | Silencer of draught fan |
| CN106015101A (en) * | 2016-08-03 | 2016-10-12 | 广东美的制冷设备有限公司 | Volute, fan and air conditioning equipment, |
-
2015
- 2015-07-14 CN CN201520509825.6U patent/CN204961415U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963899A (en) * | 2015-07-14 | 2015-10-07 | 柳州职业技术学院 | Silencer of draught fan |
| CN106015101A (en) * | 2016-08-03 | 2016-10-12 | 广东美的制冷设备有限公司 | Volute, fan and air conditioning equipment, |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20170714 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |