CN104747856A - Wind pipe noise reducing structure, wind pipe and wind pipe type air conditioner - Google Patents
Wind pipe noise reducing structure, wind pipe and wind pipe type air conditioner Download PDFInfo
- Publication number
- CN104747856A CN104747856A CN201310730748.2A CN201310730748A CN104747856A CN 104747856 A CN104747856 A CN 104747856A CN 201310730748 A CN201310730748 A CN 201310730748A CN 104747856 A CN104747856 A CN 104747856A
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- Prior art keywords
- noise reduction
- airduct
- reduction components
- wind
- tube chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Duct Arrangements (AREA)
Abstract
The invention discloses a wind pipe noise reducing structure, a wind pipe and a wind pipe type air conditioner, which are designed for solving such problems as high wind outlet noise in a traditional wind pipe type air conditioner. The wind pipe noise reducing structure comprises a noise reducing component arranged in a wind pipe, wherein a wind way communicated with the wind pipe is arranged in the noise reducing component; multiple rows of parallel sound absorbing pipe cavities are arranged on at least one side of the wind way in the wind outlet direction; each row of the sound absorbing pipe cavities comprises multiple sound absorbing pipe cavities tightly arranged; one ends of the sound absorbing pipe cavities are closed; and the other ends are communicated with the wind way. Meanwhile, the invention provides a wind pipe having the noise reducing structure and a wind pipe type air conditioner having the wind pipe. The lengths of the sound absorbing pipe cavities of the wind pipe noise reducing structure are set according to a noise spectrum in a wind outlet, so that outlet air generates the resonance with air columns in the sound absorbing pipe cavities when arriving at cavity ports of the sound absorbing pipe cavities, sound energy is converted to heat energy to be consumed, the noise reducing effect can be achieved without needing energy supply, and the effects of energy conservation and environmental protection are achieved.
Description
Technical field
The present invention relates to a kind of airduct denoising structure, airduct and wind pipe machine.
Background technique
Noise becomes one of environmental pollution problem received much concern just day by day, the noise of indoor apparatus of air conditioner directly affects the physical and mental health of people, it is the problem of Consumer's general concern, in the judging standard of air-conditioning quality, noise level is positioned at the status of equal importance with key parameters such as the refrigerating capacity of air conditioner, heating capacity, Energy Efficiency Ratio, air quantity already.
For air-conditioning internal machine, its noise produced comprises mechanical noise and pneumatic noise, but pneumatic noise is much larger than mechanical noise, and main pneumatic noise produces at the exhaust outlet place of air-conditioning.
The method of existing reduction exhaust outlet place noise is generally arrange sound-absorbing material layer at exhaust outlet place, the noise of exhaust outlet place generation is absorbed by sound-absorbing material layer, the method can reduce noise to a certain extent, but need to transform the structure at exhaust outlet place, structure is more complicated and sound-absorbing effect is poor, has wind loss.
Summary of the invention
An object of the present invention is to propose a kind of simple and reliable for structure, airduct denoising structure that acoustically effective is good.
Another object of the present invention proposes the low airduct denoising structure of a kind of cost of production.
Another object of the present invention proposes the airduct that a kind of structure is simple, noise is low, cost of production is low.
An also object of the present invention proposes the wind pipe machine that a kind of structure is simple, noise is low, cost of production is low.
For reaching this object, on the one hand, the present invention is by the following technical solutions:
A kind of airduct denoising structure, described denoising structure comprises the noise reduction components be arranged in airduct, described noise reduction components inside has the air channel be connected with described airduct, the parallel many row's sound absorption tube chambers along air-out direction arrangement are provided with at least side in described air channel, often row's sound absorption tube chamber comprises multiple compact arranged sound absorption tube chamber, described sound absorption tube chamber one end is closed, and the other end is connected with described air channel.
Preferably, described noise reduction components is arranged at the both sides in described air channel, and reduces all gradually to the length of the sound absorption tube chamber of the noise reduction components of the described both sides in downstream along the direction of air-out from upstream.
Preferably, described noise reduction components comprises the first noise reduction components and the second noise reduction components, forms described air channel between described first noise reduction components and described second noise reduction components;
The absorbing duct cavity axis of described first noise reduction components and the absorbing duct cavity axis of described second noise reduction components arranged in a crossed manner with a predetermined angle.
Preferably, the absorbing duct cavity axis of described first noise reduction components is mutually vertical with the absorbing duct cavity axis of described second noise reduction components.
Preferably, described many row's sound absorption tube chambers are formed by multiple baffle for separating arranged in a crossed manner.
Preferably, described noise reduction components also comprises housing, and the two lateral walls of described housing offers intake opening and exhaust vent respectively, forms described air channel between intake opening and exhaust vent, and described intake opening is connected with airduct;
Described multiple dividing plate mutually vertical, arranged in a crossed manner is fixedly connected with described housing, described enclosure interior space is divided into described first noise reduction components and described second noise reduction components.
Preferably, described noise reduction components is formed by polycarbonate injection moulded.
On the other hand, the present invention is by the following technical solutions:
A kind of airduct, is provided with above-mentioned airduct denoising structure in described airduct.
Again on the one hand, the present invention is by the following technical solutions:
A kind of wind pipe machine, the exhaust outlet place of described wind pipe machine is provided with above-mentioned airduct.
Beneficial effect of the present invention is:
(1) airduct denoising structure of the present invention is that the exhaust outlet place of airduct is provided with multiple sound absorption tube chamber be connected with the air channel of airduct, the length of sound absorption tube chamber sets according to the noise spectrum at exhaust outlet place, resonate with the intraluminal air column of sound absorption when making air-out arrive the accent of sound absorption tube chamber, acoustic energy is converted into heat and dissipates, do not need energy supply can reach the effect reducing noise, energy-conserving and environment-protective, and the area of tube chamber accent can allow air-out pass through easily, substantially do not increase windage, wind loss can be ignored;
(2) tube chamber that absorbs sound is arranged at the both sides in described airduct air channel and the length of sound absorption tube chamber is determined according to noise frequency in its region, namely the length of described sound absorption tube chamber is reduced to air side gradually by the inlet side of sound absorption structure, farthest can obtain acoustically effective;
(3) arrange sound absorption tube chamber to be formed by multiple baffle for separating arranged in a crossed manner, this structure is formed by polycarbonate injection moulded, and structure is simple more, and be easy to realize, cost of production is low, is easy to batch production;
(4) profile of noise reduction components can manufacture according to the concrete shape of exhaust outlet, and highly versatile is applicable to various exhaust outlet place.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of the noise reduction components of the airduct denoising structure that the embodiment of the present invention one provides;
Fig. 2 is the longitdinal cross-section diagram of the noise reduction components that the embodiment of the present invention one provides;
Fig. 3 is the view in transverse section of the noise reduction components that the embodiment of the present invention one provides;
Fig. 4 is the longitdinal cross-section diagram of the noise reduction components of the airduct denoising structure that the embodiment of the present invention two provides.
In figure, 1, housing; 11, intake opening; 12, exhaust vent; 2, horizontal baffle; 3, vertical clapboard; 4, the first noise reduction components; 5, the second noise reduction components; 6, absorb sound tube chamber; 7, air channel.
Embodiment
Technological scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Embodiment one:
The present embodiment airduct denoising structure comprises the noise reduction components be arranged in airduct.Preferably, noise reduction components is arranged on the exhaust outlet place of airduct.Fig. 1 to Fig. 3 is the structural representation of the noise reduction components of the airduct denoising structure that the present embodiment provides.As shown in the figure, noise reduction components comprises the housing 1 for being installed in airduct, the top of housing 1 is connected with the horizontal baffle 2 of multiple uniform intervals setting and the vertical partition plate 3 of multiple uniform intervals setting, multiple horizontal baffle 2 and multiple vertical partition plate 3 intersect to form the sound absorption tube chamber 6 of the first noise reduction components 4, first noise reduction components 4 mutually in vertically arranging; The bottom of housing 1 is connected with the horizontal baffle 2 of multiple uniform intervals setting and the vertical partition plate 3 of multiple uniform intervals setting, multiple horizontal baffle 2 and multiple vertical partition plate 3 intersect to form the sound absorption tube chamber 6 of the second noise reduction components 5, second noise reduction components 5 mutually in being horizontally disposed with.Wherein be only relative position relation up and down, do not represent the concrete restriction to structure.
Sound absorption tube chamber 6 axis of the first noise reduction components 4 and sound absorption tube chamber 6 axis of the second noise reduction components 5, in vertical setting mutually, form air channel 7 between the first noise reduction components 4 and the second noise reduction components 5 and tube chamber 6 one end that absorbs sound is closed, and the other end is connected with air channel 7.On housing 1, air intake one end, corresponding air channel 7 has intake opening 11, and air-out one end, corresponding air channel 7 has exhaust vent 12, and intake opening 11 is connected with airduct.
Each sound absorption tube chamber 6 all can be used as 1/4 wave resonator, and the lumen length of sound absorption tube chamber 6 can by formula
obtain,
Wherein, the lumen length of L-sound absorption tube chamber;
The flowing velocity of c-sound in sound absorption tube chamber;
F-resonant frequency, namely by the frequency peak of noise in its present position of noise experiment octave data acquisition.
From above formula, the length of sound absorption tube chamber 6 can adjust according to the noise spectrum at airduct exhaust outlet place, makes it consistent with the peak value of region frequency noise.Preferably, the length of the sound absorption tube chamber 6 along the direction of air-out from upstream to downstream reduces all gradually, thus between the first noise reduction components 4 and the second noise reduction components 5, forms the air channel 7 of inclination, farthest to obtain acoustically effective.
When wind arrives airduct denoising structure, wind enters in noise reduction components by the intake opening 11 of housing 1, when sound wave arrives the accent of the sound absorption tube chamber 6 of both sides, due to the sudden change of acoustic impedance, major part acoustic energy goes back to sound source reflects, meanwhile, sound wave resonates with the air column in sound absorption tube chamber 6, and acoustic energy is converted into heat and dissipates, remaining sound wave continues the accent that forward direction arrives next sound absorption tube chamber 6, sound is absorbed gradually, and reach the object of noise elimination, wind is then blown out by exhaust vent.Do not need energy supply can reach the effect reducing noise, energy-conserving and environment-protective, and the area of tube chamber accent can allow air-out pass easily through, and does not substantially increase windage, wind loss can be ignored.
The present embodiment airduct denoising structure is formed by polycarbonate injection moulded, and structure is simple, and be easy to realize, cost of production is low, is easy to batch production.The material of airduct denoising structure is not limited to polycarbonate (PC), and other are easy to molding and forming and can realize the material of above-mentioned functions.
The profile of airduct denoising structure can manufacture according to the concrete shape of exhaust outlet, and highly versatile is applicable to various exhaust outlet place.
Wherein, the dividing plate that the space of separating in housing forms sound absorption tube chamber is not limited to above-mentioned vertical partition plate and horizontal baffle, enclosure interior space can be separated into the object that sound absorption tube chamber reaches sound absorption; The absorbing duct cavity axis of the first noise reduction components and the absorbing duct cavity axis of the second noise reduction components are not limited to vertical setting mutually, arranged in a crossed manner with a predetermined angle, realize acoustically effective; Noise reduction components is not limited to and arranges the first noise reduction components and the second noise reduction components respectively in the both sides in air channel, also only in one-sided setting, can reach excellent acoustically effective.
Embodiment two:
Fig. 4 is the structural representation of the noise reduction components of the airduct denoising structure that the present embodiment provides.As shown in the figure, the structure of this noise reduction components is substantially identical with embodiment one, comprises the housing 1 for being installed in airduct, and the top of housing 1 has the first noise reduction components 4 mutually intersected to form by multiple horizontal baffle 2 and multiple vertical partition plate 3; The second noise reduction components 5 that the vertical partition plate 3 that the bottom of housing 1 has the horizontal baffle 2 and multiple uniform intervals setting arranged by multiple uniform intervals intersects to form mutually.
Difference is, the sound absorption tube chamber 6 of the first noise reduction components 4 is in being horizontally disposed with, and the sound absorption tube chamber 6 of the second noise reduction components 5 is in vertically arranging.This airduct denoising structure also can reach the acoustically effective identical with embodiment one.
Embodiment three:
The present embodiment is a kind of wind pipe machine, is provided with the airduct of the airduct denoising structure had as described in embodiment one or embodiment two at this wind pipe machine exhaust outlet place.Reached the effect reducing noise by airduct denoising structure, structure is simple, energy-conserving and environment-protective, and the area of tube chamber accent can allow air-out pass easily through, and does not substantially increase windage, and wind loss can be ignored.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (9)
1. an airduct denoising structure, it is characterized in that: described denoising structure comprises the noise reduction components be arranged in airduct, described noise reduction components inside has the air channel (7) be connected with described airduct, parallel many rows's sound absorption tube chamber (6) along air-out direction arrangement are provided with at least side of described air channel (7), often row's sound absorption tube chamber comprises multiple compact arranged sound absorption tube chamber (6), described sound absorption tube chamber (6) one end is closed, and the other end is connected with described air channel (7).
2. a kind of airduct denoising structure according to claim 1, it is characterized in that: described noise reduction components is arranged at the both sides of described air channel (7), and the length of sound absorption tube chamber (6) along the direction of air-out from upstream to the noise reduction components of the described both sides in downstream reduces all gradually.
3. a kind of airduct denoising structure according to claim 2, it is characterized in that: described noise reduction components comprises the first noise reduction components (4) and the second noise reduction components (5), between described first noise reduction components (4) and described second noise reduction components (5), form described air channel (7);
Sound absorption tube chamber (6) axis of described first noise reduction components (4) and sound absorption tube chamber (6) axis of described second noise reduction components (5) arranged in a crossed manner with a predetermined angle.
4. a kind of airduct denoising structure according to claim 3, is characterized in that: sound absorption tube chamber (6) axis of described first noise reduction components (4) is mutually vertical with sound absorption tube chamber (6) axis of described second noise reduction components (5).
5. a kind of airduct denoising structure according to claim 3 or 4, is characterized in that: described many row'ss sound absorption tube chamber (6) are formed by multiple baffle for separating arranged in a crossed manner.
6. a kind of airduct denoising structure according to claim 5, it is characterized in that: described noise reduction components also comprises housing (1), the two lateral walls of described housing (1) offers respectively intake opening (11) and exhaust vent (12), between intake opening (11) and exhaust vent (12), form described air channel (7), described intake opening (11) is connected with airduct;
Described multiple dividing plate mutually vertical, arranged in a crossed manner is fixedly connected with described housing (1), and described enclosure interior space is divided into described first noise reduction components (4) and described second noise reduction components (5).
7. a kind of airduct denoising structure according to claim 6, is characterized in that: described noise reduction components is formed by polycarbonate injection moulded.
8. an airduct, is characterized in that: be provided with the airduct denoising structure as described in any one of claim 1 to 7 in described airduct.
9. a wind pipe machine, is characterized in that: the exhaust outlet place of described wind pipe machine is provided with airduct as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310730748.2A CN104747856A (en) | 2013-12-26 | 2013-12-26 | Wind pipe noise reducing structure, wind pipe and wind pipe type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310730748.2A CN104747856A (en) | 2013-12-26 | 2013-12-26 | Wind pipe noise reducing structure, wind pipe and wind pipe type air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104747856A true CN104747856A (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310730748.2A Pending CN104747856A (en) | 2013-12-26 | 2013-12-26 | Wind pipe noise reducing structure, wind pipe and wind pipe type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747856A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954508A (en) * | 2018-06-15 | 2018-12-07 | 青岛海信日立空调系统有限公司 | Wind pipe type indoor unit |
| CN109708388A (en) * | 2018-11-19 | 2019-05-03 | 青岛海尔股份有限公司 | Compressor assembly and refrigerator with it |
| CN109708385A (en) * | 2018-11-19 | 2019-05-03 | 青岛海尔股份有限公司 | Air duct and its refrigerator |
| CN110793181A (en) * | 2019-10-28 | 2020-02-14 | 青岛海尔空调电子有限公司 | Wind pipe machine noise reduction device and method for designing acoustic metamaterial module for same |
| CN112254394A (en) * | 2019-07-22 | 2021-01-22 | 青岛海尔智能技术研发有限公司 | Noise reduction plate and refrigerator |
| CN113124256A (en) * | 2021-04-09 | 2021-07-16 | 株洲时代新材料科技股份有限公司 | Method for improving noise reduction effect of low-frequency noise reduction liner of pipeline and sound liner |
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| US6450289B1 (en) * | 1998-11-16 | 2002-09-17 | Christopher David Field | Noise attenuation device |
| NL1019748C1 (en) * | 2002-01-16 | 2003-07-17 | Hubertus Cornelis Ma Hubregtse | Device for damping sound caused by medium flowing in conduit comprises parallel, relatively narrow channels in part of conduit |
| CN1981098A (en) * | 2004-05-07 | 2007-06-13 | 赛伦斯艾尔国际公司 | A ventilation device and frame system |
| CN203082391U (en) * | 2012-12-25 | 2013-07-24 | 浙江航民科尔纺织有限公司 | Noise reduction trapezoid return duct |
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2013
- 2013-12-26 CN CN201310730748.2A patent/CN104747856A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6450289B1 (en) * | 1998-11-16 | 2002-09-17 | Christopher David Field | Noise attenuation device |
| NL1019748C1 (en) * | 2002-01-16 | 2003-07-17 | Hubertus Cornelis Ma Hubregtse | Device for damping sound caused by medium flowing in conduit comprises parallel, relatively narrow channels in part of conduit |
| CN1981098A (en) * | 2004-05-07 | 2007-06-13 | 赛伦斯艾尔国际公司 | A ventilation device and frame system |
| CN203082391U (en) * | 2012-12-25 | 2013-07-24 | 浙江航民科尔纺织有限公司 | Noise reduction trapezoid return duct |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954508A (en) * | 2018-06-15 | 2018-12-07 | 青岛海信日立空调系统有限公司 | Wind pipe type indoor unit |
| CN109708388A (en) * | 2018-11-19 | 2019-05-03 | 青岛海尔股份有限公司 | Compressor assembly and refrigerator with it |
| CN109708385A (en) * | 2018-11-19 | 2019-05-03 | 青岛海尔股份有限公司 | Air duct and its refrigerator |
| CN109708388B (en) * | 2018-11-19 | 2020-12-04 | 海尔智家股份有限公司 | Compressor assembly and refrigerator with same |
| CN112254394A (en) * | 2019-07-22 | 2021-01-22 | 青岛海尔智能技术研发有限公司 | Noise reduction plate and refrigerator |
| CN112254394B (en) * | 2019-07-22 | 2023-05-23 | 青岛海尔智能技术研发有限公司 | Noise reduction plate and refrigerator |
| CN110793181A (en) * | 2019-10-28 | 2020-02-14 | 青岛海尔空调电子有限公司 | Wind pipe machine noise reduction device and method for designing acoustic metamaterial module for same |
| CN110793181B (en) * | 2019-10-28 | 2022-09-13 | 青岛海尔空调电子有限公司 | Wind pipe machine noise reduction device and method for designing acoustic metamaterial module for same |
| CN113124256A (en) * | 2021-04-09 | 2021-07-16 | 株洲时代新材料科技股份有限公司 | Method for improving noise reduction effect of low-frequency noise reduction liner of pipeline and sound liner |
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Application publication date: 20150701 |
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