CN108775702A - One kind being used for the indoor air exchange system oise damping means of low noise - Google Patents
One kind being used for the indoor air exchange system oise damping means of low noise Download PDFInfo
- Publication number
- CN108775702A CN108775702A CN201810704197.5A CN201810704197A CN108775702A CN 108775702 A CN108775702 A CN 108775702A CN 201810704197 A CN201810704197 A CN 201810704197A CN 108775702 A CN108775702 A CN 108775702A
- Authority
- CN
- China
- Prior art keywords
- noisekiller
- sound
- outlet pipe
- diameter
- exchange system
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/242—Sound-absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses one kind being used for the indoor air exchange system oise damping means of low noise, including scavenger fan, and the outlet pipe that is connected to scavenger fan, it is characterised in that, the rotating speed of a diameter of 25-38cm of flabellum of the scavenger fan, scavenger fan are 500 revs/min or less；Further include noisekiller, the noisekiller is cavity column, and 4-8 times of a diameter of outlet pipe diameter, the cavity column is interior to be filled with sound-absorbing material；The noisekiller is serially connected on outlet pipe, 7 times of a diameter of outlet pipe of the noisekiller, and the sound-absorbing material is straight hole sound-absorbing material.Including discharge duct, the discharge duct is serially connected with the noisekiller, and the inner wall of the discharge duct is equipped with sound absorbing layer.The present invention is without long pipeline, and occupied space is smaller, cost is relatively low, noise filtering effect is preferable.
Description
Technical field
The present invention relates to field of noise control, are related to the noise abatement of air exchange system, especially a kind of to be used for low noise sound chamber
Interior air exchange system oise damping means.
Background technology
There are the workplace of strict demand, such as small-sized recording studio for noise, due to completely enclosed with the external world, so
Install air exchange system additional, air exchange system is the pipeline air exchange system driven with low-noise scavenger fan, this low noise ventilation
It includes that a long hush pipe and scavenger fan, scavenger fan are connected to hush pipe to fan its structure, and the flabellum diameter of scavenger fan is logical
Often for 15cm hereinafter, referring to the circular diameter formed when flabellum rotation, because the uncontrollable outdoor of silencing pipeline diameter conference is made an uproar
The entrance of sound, therefore noise reduction pipe diameter is smaller, the rotating speed of scavenger fan is 2000 revs/min or more, needs larger rotating speed
Enough air mass flow can be provided, since fan revolution speed and fan noise and eddy current crack are at geometric progression relationship, thus
The noise that ventilation fan generates is larger, is difficult to control and eliminates, and the noise of ventilation fan and extraneous noise become incoming by pipeline
Work indoor Main Noise Sources, since there is noise in such operating room high requirement, so the hush pipe one of air interchanger
As use the pipeline of 3-5m long, and pipeline is bent more, although having sound-absorbing material in inner wall of the pipe, entire pipeline occupancy is larger
Space, of high cost, noise filtering effect is poor.
Invention content
The purpose of the present invention is being directed to the above situation, provide a kind of for the indoor air exchange system noise abatement dress of low noise
It sets, this oise damping means occupied space is smaller, cost is relatively low, noise filtering effect is preferable.
Realizing the technical solution of the object of the invention is：
One kind being used for the indoor air exchange system oise damping means of low noise, including scavenger fan, and is connected to scavenger fan
Outlet pipe, unlike the prior art, a diameter of 25-38cm of flabellum of the scavenger fan, refer to flabellum rotation when shape
At circular diameter, the rotating speed of scavenger fan is 500 revs/min or less；
Further include noisekiller, the noisekiller be cavity column, 4-8 times of a diameter of outlet pipe diameter,
Sound-absorbing material is filled in the cavity column；
The noisekiller is serially connected on outlet pipe.
The outlet pipe inner wall is equipped with sound absorbing layer.
The cavity column inner wall is equipped with sound absorbing layer.
The sound-absorbing material is straight hole sound-absorbing material.
Including discharge duct, the discharge duct is serially connected with the noisekiller.
The inner wall of the discharge duct is equipped with sound absorbing layer.
The present apparatus controls noises by two technological innovations, and 1, using the scavenger fan of major diameter flabellum, increase air and enters
Mouthful, scavenger fan flabellum compared with low velocity to rotate, since fan leaf diameter is big, even if may be thinner outlet compared with the slow-speed of revolution
Pipeline provides enough air pressures, and for fan revolution speed with fan noise and eddy current crack at geometric progression relationship, the slow-speed of revolution can be significantly
This Main Noise Sources of decrease fan；2, noisekiller is added, by sound wave effect in sound-absorbing material surface, acoustic energy is made to convert
Noisekiller for sound-absorbing material thermal energy and potential energy, above structure keeps sound-absorbing material and air flow contacts surface area very big, inhales
The efficiency for receiving noise is very high, further reduced noise.
The present apparatus is and this room for the air interchanger that has the interior of low noise requirement to be designed, such as recording studio
Between in addition to mouth of taking a breath have very strong seal, be almost isolated with free surrounding space, therefore unlike other rooms,
Gas outlet is needed, otherwise only air inlet can cause room pressure to become larger and seriously reduce scavenging efficiency.
Advantages of the present invention：Without long pipeline, occupied space is smaller, cost is relatively low, noise filtering effect is preferable.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the schematic diagram that discharge duct is connect with noisekiller in embodiment.
In figure, 1. 4. sound-absorbing material of scavenger fan 1-1. flabellum 2. outlet pipe, 3. noisekillers, 5. sound absorbing layer
6. discharge duct.
Arrow indicates the direction of air circulation.
Specific implementation mode
The content of present invention is further elaborated with reference to the accompanying drawings and examples, but is not limitation of the invention.
Embodiment：
Referring to Fig.1, a kind of to be used for the indoor air exchange system oise damping means of low noise, including scavenger fan 1, and with ventilation
The outlet pipe 2 that fan 1 is connected to, a diameter of 32cm of flabellum 1-1 of the scavenger fan 1 refer to the circle formed when flabellum rotation
Diameter, the rotating speed of scavenger fan 1 is 450 revs/min；
Further include noisekiller 3, the noisekiller 3 is cavity column, the 4-8 of 2 diameter of a diameter of outlet pipe
Times, this example is 7 times, 2 a diameter of 3cm of outlet pipe, 3 a diameter of 21cm of noisekiller, is filled in the cavity column
Sound-absorbing material 4；
The noisekiller 3 is serially connected on outlet pipe 2, and outlet pipe 2 is connected to interior.
The inner wall of the outlet pipe 2 is equipped with sound absorbing layer 5, using inorganic foamed sound-absorbing material.
The inner wall of the cavity column is equipped with sound absorbing layer 5.
The sound-absorbing material 4 is straight hole sound-absorbing material, using organic fiber, inorfil or inorganic foamed sound-absorbing material,
It is processed into the cylinder of straight through-hole as shown in the figure.
With reference to Fig. 2, including discharge duct 6, the discharge duct 6 is serially connected with the noisekiller 3, discharge duct 6 with
Indoor connection.
The inner wall of the discharge duct 6 is equipped with sound absorbing layer 5.
The thickness of sound absorbing layer 5 is 0.6cm.
Outdoor air is introduced interior by scavenger fan 1 by outlet pipe 2, noisekiller 3, and indoor air passes through
Outdoor is discharged in noisekiller 3, discharge duct 6, achievees the purpose that low noise indoor air-changing.
5 times of 3 a diameter of air pipeline 2 of noisekiller, breathing area is 25 times of air pipeline 2, although in this way
Built-in thin straight hole sound-absorbing material, ventilatory capacity is also enough, does not influence the air mass flow of confined space.
The present apparatus use major diameter flabellum 1-1, increase air intake, scavenger fan flabellum 1-1 to be rotated compared with low velocity, by
It is big in fan leaf diameter, even if may be that thinner outlet pipe 2 provides enough air pressures compared with the slow-speed of revolution, fan revolution speed with
At geometric progression relationship, the slow-speed of revolution can weaken scavenger fan 1 this Main Noise Sources significantly for fan noise and eddy current crack；2, increase
If noisekiller 3, by sound wave effect in sound-absorbing material surface, acoustic energy is made to be converted into sound-absorbing material thermal energy and potential energy, noise
Absorber keeps sound-absorbing material and air flow contacts surface area very big, and the efficiency of absorption of noise is very high, further reduced noise.
Claims (7)
1. one kind being used for the indoor air exchange system oise damping means of low noise, including scavenger fan, and connects with scavenger fan
Logical outlet pipe, which is characterized in that the rotating speed of a diameter of 25-38cm of flabellum of the scavenger fan, scavenger fan are 500
Rev/min or less；
Further include noisekiller, the noisekiller be cavity column, 4-8 times of a diameter of outlet pipe diameter,
Sound-absorbing material is filled in the cavity column；
The noisekiller is serially connected on outlet pipe.
2. according to claim 1 be used for the indoor air exchange system oise damping means of low noise, which is characterized in that described
7 times of a diameter of outlet pipe of noisekiller.
3. according to claim 1 be used for the indoor air exchange system oise damping means of low noise, which is characterized in that described
Outlet pipe inner wall is equipped with sound absorbing layer.
4. according to claim 1 be used for the indoor air exchange system oise damping means of low noise, which is characterized in that described
Cavity column inner wall is equipped with sound absorbing layer.
5. according to claim 1 be used for the indoor air exchange system oise damping means of low noise, which is characterized in that described
Sound-absorbing material is straight hole sound-absorbing material.
6. according to claim 1 be used for the indoor air exchange system oise damping means of low noise, which is characterized in that including
Discharge duct, the discharge duct are serially connected with the noisekiller.
7. according to claim 6 be used for the indoor air exchange system oise damping means of low noise, which is characterized in that described
The inner wall of discharge duct is equipped with sound absorbing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704197.5A CN108775702A (en) | 2018-06-30 | 2018-06-30 | One kind being used for the indoor air exchange system oise damping means of low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704197.5A CN108775702A (en) | 2018-06-30 | 2018-06-30 | One kind being used for the indoor air exchange system oise damping means of low noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108775702A true CN108775702A (en) | 2018-11-09 |
Family
ID=64030757
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810704197.5A Pending CN108775702A (en) | 2018-06-30 | 2018-06-30 | One kind being used for the indoor air exchange system oise damping means of low noise |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500422A (en) * | 2014-12-03 | 2015-04-08 | 西安交通大学 | Low-noise fan for directional cooling |
| CN205383734U (en) * | 2015-11-23 | 2016-07-13 | 刘继武 | Low noise new trend and exhaust system and acoustics room that has this system |
| CN107120822A (en) * | 2017-04-27 | 2017-09-01 | 海信（山东）空调有限公司 | A kind of intumescent silencer and VMC |
| CN108005754A (en) * | 2016-10-28 | 2018-05-08 | 天津烽珊源科技有限公司 | A kind of automobile using sound-deadening and noise-reducing device |
| CN208652880U (en) * | 2018-06-30 | 2019-03-26 | 桂林电子科技大学 | One kind being used for the indoor air exchange system oise damping means of low noise |
-
2018
- 2018-06-30 CN CN201810704197.5A patent/CN108775702A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500422A (en) * | 2014-12-03 | 2015-04-08 | 西安交通大学 | Low-noise fan for directional cooling |
| CN205383734U (en) * | 2015-11-23 | 2016-07-13 | 刘继武 | Low noise new trend and exhaust system and acoustics room that has this system |
| CN108005754A (en) * | 2016-10-28 | 2018-05-08 | 天津烽珊源科技有限公司 | A kind of automobile using sound-deadening and noise-reducing device |
| CN107120822A (en) * | 2017-04-27 | 2017-09-01 | 海信（山东）空调有限公司 | A kind of intumescent silencer and VMC |
| CN208652880U (en) * | 2018-06-30 | 2019-03-26 | 桂林电子科技大学 | One kind being used for the indoor air exchange system oise damping means of low noise |
Non-Patent Citations (1)
| Title |
|---|
| 符锡候: "车辆用柴油机总体设计", 上海交通大学出版社, pages: 212 - 214 * |
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