CN201819582U - Elbow type noise eliminating device of cooling tower of central air conditioner - Google Patents

Elbow type noise eliminating device of cooling tower of central air conditioner Download PDF

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Publication number
CN201819582U
CN201819582U CN201020531847XU CN201020531847U CN201819582U CN 201819582 U CN201819582 U CN 201819582U CN 201020531847X U CN201020531847X U CN 201020531847XU CN 201020531847 U CN201020531847 U CN 201020531847U CN 201819582 U CN201819582 U CN 201819582U
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China
Prior art keywords
cooling tower
sound
air
noise elimination
elbow type
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Expired - Fee Related
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CN201020531847XU
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Chinese (zh)
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任小平
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任小平
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Abstract

The utility model discloses an elbow type noise eliminating device of a cooling tower of a central air conditioner, which comprises the cooling tower and a sound absorbing and insulating board, wherein the cooling tower is provided with a silencing air inlet and a silencing air outlet, the silencing air inlet mainly consists of the sound absorbing and insulating board and is arranged at the lower part of the side surface of the cooling tower, and the silencing air outlet is arranged at the top of the cooling tower; and the sound absorbing and insulating board covers the outer surface of the cooling tower in an enclosing manner, and a silencing elbow pipe is connected at the top of the cooling tower. The elbow type noise eliminating device adopts the special equipment with a set of serialized and more uniform basic structure, use material, manufacture and installation method, and has good noise reducing effect and ventilating and radiating effects; and wind enters from the lower part of the cooling tower and is discharged from the upper part, after the requirements of normal air inlet, air exhaust and radiation of the cooling tower are met, the temperature difference between the inlet water and the outlet water is 4 DEG C, and the noise of the cooling tower can be averagely reduced by more than 20d B (A).

Description

Air-condition cooling tower elbow type silencing apparatus
Technical field
The utility model relates to a kind of muffler, relates in particular to a kind of air-condition cooling tower elbow type silencing apparatus.
Background technology
At present, cooling tower is in central air conditioner system equipment, by the heat transmission equipment of water evaporation heat radiation, uses very extensive in building, market, hotel.But it is in service at cooling tower, two main noise sources of cooling tower are: 1, top noise elimination exhaust outlet axial flow blower mechanical noise and flabellum hit the aerodynamic noise of the higher air particle of water content, wherein, the air power noise that axial flow blower produces is made up of rotational noise and eddy current crack, and this partial noise is divided into air intake noise and air draft noise.2, both sides and the mechanical vibration noise and the tangible water droplet sound in step down.The noise of cooling tower has brought harm and influence to society, has been the requirement of social development to the improvement of cooling tower buzz.The air intake mode of existing cooling tower wind inlet silencing device mainly be around air intake or two sides air intake.If adopt the top air intake, the anechoic sheet of wind inlet silencing device must be consistent with the arranged direction of the anechoic sheet of air draft silencing apparatus, and eliminate the noise like this air inlet and noise elimination exhaust outlet easily cause the hot and cold air mixed flow, thereby influence the service efficiency of cooling tower at a distance of nearer.In addition, cooling tower of the prior art seldom is equipped with denoising device, and the occasion of silencer is installed at some, generally be to utilize loose many micropores sound-absorbing material such as super glass wool, mineral wool to reduce noise, but the cooling tower that turns round under the condition can often face Exposure to Sunlight, drench with rain and strong wind in the open, so loose material is easy to sink, deposit, make acoustic attenuation performance descend.The measure of this reduction noise comes down to optionally to block, shield, and the solution that noise problem is not yet in effect also causes ventilation and heat bad, and uses inconvenience, is not the unified special equipment of seriation.The cooling tower that other is produced has more technical progress than cooling tower in the past, and noise is relatively low, about 68~75dB<A 〉, but still can not reach requirement, still there is noise pollution within the specific limits.At present, still there is not a cover form comparatively fixing, the device that obvious reduction noise performance and maintenance good ventilation radiating effect are arranged of seriation.
The utility model content
At above-mentioned the deficiencies in the prior art part, the purpose of this utility model is: a kind of air-condition cooling tower elbow type silencing apparatus is provided, its basic structure, use material, manufacturing, installation method are the comparatively unified special equipment of a cover seriation, and excellent noise reduction effect, result of ventilating heat dissipation is good, can effectively solve the problem that above-mentioned prior art exists.
To achieve these goals, the technical solution adopted in the utility model is: disclose a kind of air-condition cooling tower elbow type silencing apparatus, it comprises cooling tower and sound-absorbing sound insulationg board, noise elimination air inlet and noise elimination exhaust outlet are arranged on the cooling tower, described noise elimination air inlet mainly is made up of the sound-absorbing sound insulationg board, and be located at the bottom, side of cooling tower, the noise elimination exhaust outlet is located at the top of cooling tower; The outer surface of cooling tower encloses and covers the sound-absorbing sound insulationg board, is connected to the noise elimination bend pipe at the top of cooling tower.
As optimal way, the hollow tubular that described noise elimination bend pipe constitutes for the arc section that is bent to form by straightway and one end end, the end of its arc section and sound-absorbing sound insulationg board are fixed.
Described sound-absorbing sound insulationg board is mainly by being positioned at outer field metal perforated plate and color steel filled board and being made up of the holding sheet that the sound absorption fibrous material is filled between the two.
Further, also be provided with in the described holding sheet and can keep the constant keel of the distance of hollow between metal perforated plate and the color steel filled board.
Structure as the sound-absorbing sound insulationg board of one of alternatively's optimal way is, wherein said sound-absorbing sound insulationg board is the individual layer combined type, and the thickness of metal perforated plate is 0.6~0.8mm, and the thickness of color steel filled board is 0.75-1mm, and the thickness of holding sheet is 100mm.
Structure as two sound-absorbing sound insulationg board of alternatively's optimal way is, wherein said sound-absorbing sound insulationg board is double-layer combined, and the thickness of metal perforated plate is 0.5~0.6mm, and the thickness of color steel filled board is 50~100mm, and the thickness of holding sheet is 100mm.
As being shaped as of the cooling tower of one of alternatively's mode, toward the inclined-plane that has a down dip, the noise elimination air inlet is located at the below, inclined-plane for outward in the bottom, side of described cooling tower.
As being shaped as of two cooling tower of alternatively's mode, the bottom, side of described cooling tower is provided with uncovered boss for the lateral surface bottom, and the noise elimination air inlet is located at open-mouth.
As optimal way 1, described sound-absorbing sound insulationg board is the individual layer combined type, and the thickness of metal perforated plate is 0.6~0.8mm, and the thickness of color steel filled board is 0.75-1mm, and the thickness of holding sheet is 100mm; Toward the inclined-plane that has a down dip, the noise elimination air inlet is located at the below, inclined-plane for outward in the bottom, side of described cooling tower.
As optimal way 2, described sound-absorbing sound insulationg board is double-layer combined, and the thickness of metal perforated plate is 0.5~0.6mm, and the thickness of color steel filled board is 50~100mm, and the thickness of holding sheet is 100mm; Toward the inclined-plane that has a down dip, the noise elimination air inlet is located at the below, inclined-plane for outward in the bottom, side of described cooling tower.
As optimal way 3, described sound-absorbing sound insulationg board is the individual layer combined type, and the thickness of metal perforated plate is 0.6~0.8mm, and the thickness of color steel filled board is 0.75-1mm, and the thickness of holding sheet is 100mm; The bottom, side of described cooling tower is that the lateral surface bottom is provided with uncovered boss, and the noise elimination air inlet is located at open-mouth.
As optimal way 4, described sound-absorbing sound insulationg board is double-layer combined, and the thickness of metal perforated plate is 0.5~0.6mm, and the thickness of color steel filled board is 50~100mm, and the thickness of holding sheet is 100mm; The bottom, side of described cooling tower is that the lateral surface bottom is provided with uncovered boss, and the noise elimination air inlet is located at open-mouth.
Compared with prior art, the beneficial effect that this utility model is brought is: this utility model is simple and reasonable for structure, with the sound-absorbing sound insulationg board cooling tower is all around covered, bottom sound-absorbing sound insulationg board is configured to the lower resistance wind deflector, air from two sides or all around bottom sucks, in cooling tower after the heat exchange, under the effect of axial flow blower, by sound-absorbing sound insulationg board and top row mouthful positive fall four ribs sound absorption awl to around discharging, its noise in the air intake surface bottom, noise elimination exhaust outlet top is attenuated reduction; The cooling tower body is enclosed fully to be covered, and the noise effect of being insulated against sound reduces.Therefore, this air-condition cooling tower elbow type silencing apparatus is under the requirement of guaranteeing the normal air intake of cooling tower, air draft, heat radiation, and 4 ℃ of the Inlet and outlet water temperature difference can on average reduce cooling tower buzz 20dB<A〉more than, and on form structure, can unify, can seriation on the specification.
Description of drawings
Fig. 1 is the schematic diagram of individual layer combined type for sound-absorbing sound insulationg board in the utility model;
Fig. 2 is double-layer combined schematic diagram for sound-absorbing sound insulationg board in the utility model;
Fig. 3 is a structural representation of the present utility model;
Fig. 4 is another structural representation of the present utility model.
The specific embodiment
Technique scheme of the present utility model and advantage thereof are not difficult to obtain to understand in depth from the detailed description and accompanying drawing of following selected embodiment.
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Referring to accompanying drawing, this air-condition cooling tower elbow type silencing apparatus comprises cooling tower 1 and sound-absorbing sound insulationg board 5, noise elimination air inlet 3 and noise elimination exhaust outlet 4 are arranged on the cooling tower 1, described noise elimination air inlet 3 mainly is made up of sound-absorbing sound insulationg board 5, and be located at the bottom, side of cooling tower 1, noise elimination exhaust outlet 4 is located at the top of cooling tower 1; The outer surface of cooling tower 1 encloses and covers sound-absorbing sound insulationg board 5, is connected to noise elimination bend pipe 6 at the top of cooling tower 1.The hollow tubular that described noise elimination bend pipe 6 constitutes for the arc section that is bent to form by straightway and one end end, the end of its arc section and sound-absorbing sound insulationg board 5 are fixing.
Concrete a kind of optimal way, noise elimination bend pipe 6 is made up of the fiber sound-absorbing material of outer field steel plate, internal layer orifice plate and middle level filling, and internal layer is that thickness is the steel plate materials of 0.5-0.75mm, has perforation on the steel plate materials, and its punching rate can reach 20%~25%; The middle level is coated with glass fabric by fibrous material, becomes absorbent treatment; Outer for thickness is the steel plate of 0.75-2mm, its combination connecting mode can adopt the mode that detachably is fastenedly connected of screw, rivet, also can adopt the fixed form of welding to realize.Owing to be that bend pipe makes noise avoid direct projection, increased positive sound absorption, sound insulation, sound deadening capacity is increased, and with cooling tower 1 joint be arc transition, it is little that air communication is crossed resistance, can make to ventilate normally simultaneously with noise attentuation.
Described sound-absorbing sound insulationg board 5 is mainly by being positioned at outer field metal perforated plate 51 and color steel filled board 53 and being made up of the holding sheet 52 that the sound absorption fibrous material is filled between the two.The unit weight of sound absorption fibrous material is 24~32 kilograms per cubic meter.Also be provided with in the described holding sheet 52 and can keep the constant keel 54 of hollow distance between metal perforated plate 51 and the color steel filled board 53.Described color steel filled board 53 can be cancelled during rearward for rigid face.
As shown in Figure 1, described sound-absorbing sound insulationg board 5 is the individual layer combined type, and the thickness of metal perforated plate 51 is 0.6~0.8mm, and the thickness of color steel filled board 53 is 0.75-1mm, and the thickness of holding sheet 52 is 100mm.
As shown in Figure 2, described sound-absorbing sound insulationg board 5 is double-layer combined, and the thickness of metal perforated plate 51 is 0.5~0.6mm, and the thickness of color steel filled board 53 is 50~100mm, and the thickness of holding sheet 52 is 100mm.
As shown in Figure 3, the bottom, side of described cooling tower 1 is the past outward inclined-plane 21 that has a down dip, and air inlet 3 is located at 21 belows, inclined-plane.
As shown in Figure 4, the bottom, side of described cooling tower 1 is that the lateral surface bottom is provided with uncovered 23 boss 22, and air inlet 3 is located at uncovered 23 places.
As preferred implementation 1, referring to Fig. 1 and Fig. 3, described sound-absorbing sound insulationg board 5 is the individual layer combined type, and the thickness of metal perforated plate 51 is 0.6~0.8mm, and the thickness of color steel filled board 53 is 0.75-1mm, and the thickness of holding sheet 52 is 100mm; Toward the inclined-plane 21 that has a down dip, noise elimination air inlet 3 is located at 21 belows, inclined-plane for outward in the bottom, side of described cooling tower 1.Oise insulation factor 20dB<A 〉; Acoustic absorptivity 0.99.
As preferred implementation 2, referring to Fig. 2 and Fig. 3, described sound-absorbing sound insulationg board 5 is double-layer combined, and the thickness of metal perforated plate 51 is 0.5~0.6mm, and the thickness of color steel filled board 53 is 50~100mm, and the thickness of holding sheet 52 is 100mm; Toward the inclined-plane 21 that has a down dip, noise elimination air inlet 3 is located at 21 belows, inclined-plane for outward in the bottom, side of described cooling tower 1.Oise insulation factor 30dB<A 〉; Acoustic absorptivity 0.99.
As preferred implementation 3, referring to Fig. 1 and Fig. 4, described sound-absorbing sound insulationg board 5 is the individual layer combined type, and the thickness of metal perforated plate 51 is 0.6~0.8mm, and the thickness of color steel filled board 53 is 0.75-1mm, and the thickness of holding sheet 52 is 100mm; The bottom, side of described cooling tower 1 is that the lateral surface bottom is provided with uncovered 23 boss 22, and noise elimination air inlet 3 is located at uncovered 23 places.Oise insulation factor 20dB<A 〉; Acoustic absorptivity 0.99.
As preferred implementation 4, referring to Fig. 2 and Fig. 4, described sound-absorbing sound insulationg board 5 is double-layer combined, and the thickness of metal perforated plate 51 is 0.5~0.6mm, and the thickness of color steel filled board 53 is 50~100mm, and the thickness of holding sheet 52 is 100mm; The bottom, side of described cooling tower 1 is that the lateral surface bottom is provided with uncovered 23 boss 22, and noise elimination air inlet 3 is located at uncovered 23 places.Oise insulation factor 30dB<A 〉; Acoustic absorptivity 0.99.
Concrete action principle is: with sound-absorbing sound insulationg board 5 all around covering cooling tower 1, bottom sound-absorbing sound insulationg board 5 is configured to the lower resistance wind deflector, air from two sides or all around bottom sucks, in cooling tower 1 after the heat exchange, under the effect of axial flow blower, behind sound-absorbing sound insulationg board 5, from top row's mouthful positive noise elimination bend pipe 6 to around discharging, its noise in noise elimination air inlet 3 bottoms, noise elimination exhaust outlet 4 tops are attenuated reduction; The tower body of cooling tower 1 is enclosed fully to be covered, and the noise effect of being insulated against sound reduces.Therefore, this air-condition cooling tower elbow type silencing apparatus is under the requirement of guaranteeing the normal air intake of cooling tower, air draft, heat radiation, the water-in and water-out temperature difference can reach 4 ℃, can on average reduce cooling tower buzz 20dB<A〉more than, and on form structure, can unify, can seriation on the specification, be convenient in cooling tower, apply.
More than air-condition cooling tower elbow type silencing apparatus provided by the utility model has been carried out detailed introduction, used specific case herein structural principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand structure of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.To change of the present utility model and improvement will be possible, and can not exceed design and the scope that accessory claim can be stipulated.

Claims (10)

1. air-condition cooling tower elbow type silencing apparatus, comprise cooling tower (1), noise elimination air inlet (3) and noise elimination exhaust outlet (4) are arranged on the cooling tower (1), it is characterized in that: also comprise sound-absorbing sound insulationg board (5), described noise elimination air inlet (3) mainly is made up of sound-absorbing sound insulationg board (5), and be located at the bottom, side of cooling tower (1), noise elimination exhaust outlet (4) is located at the top of cooling tower (1); The outer surface of cooling tower (1) encloses and covers sound-absorbing sound insulationg board (5), is connected to noise elimination bend pipe (6) at the top of cooling tower (1).
2. air-condition cooling tower elbow type silencing apparatus according to claim 1, it is characterized in that: the hollow tubular that described noise elimination bend pipe (6) constitutes for the arc section that is bent to form by straightway and one end end, the end of its arc section and sound-absorbing sound insulationg board (5) are fixing.
3. air-condition cooling tower elbow type silencing apparatus according to claim 1 is characterized in that: described sound-absorbing sound insulationg board (5) is mainly by being positioned at outer field metal perforated plate (51) and color steel filled board (53) and being made up of the holding sheet (52) that the sound absorption fibrous material is filled between the two.
4. air-condition cooling tower elbow type silencing apparatus according to claim 3 is characterized in that: also be provided with in the described holding sheet (52) and can keep the constant keel (54) of the distance of hollow between metal perforated plate (51) and the color steel filled board (53).
5. air-condition cooling tower elbow type silencing apparatus according to claim 4, it is characterized in that: described sound-absorbing sound insulationg board (5) is the individual layer combined type, the thickness of metal perforated plate (51) is 0.6~0.8mm, the thickness of color steel filled board (53) is 0.75-1mm, and the thickness of holding sheet (52) is 100mm.
6. air-condition cooling tower elbow type silencing apparatus according to claim 4, it is characterized in that: described sound-absorbing sound insulationg board (5) is for double-layer combined, the thickness of metal perforated plate (51) is 0.5~0.6mm, the thickness of color steel filled board (53) is 50~100mm, and the thickness of holding sheet (52) is 100mm.
7. air-condition cooling tower elbow type silencing apparatus according to claim 1 is characterized in that: toward the inclined-plane (21) that has a down dip, noise elimination air inlet (3) is located at below, inclined-plane (21) for outward in the bottom, side of described cooling tower (1).
8. air-condition cooling tower elbow type silencing apparatus according to claim 1 is characterized in that: the bottom, side of described cooling tower (1) is that the lateral surface bottom is provided with the boss (22) of uncovered (23), and noise elimination air inlet (3) is located at uncovered (23) and is located.
9. according to the described air-condition cooling tower elbow type of arbitrary claim silencing apparatus in claim 5 or 6, it is characterized in that: toward the inclined-plane (21) that has a down dip, noise elimination air inlet (3) is located at below, inclined-plane (21) for outward in the bottom, side of described cooling tower (1).
10. according to the described air-condition cooling tower elbow type of arbitrary claim silencing apparatus in claim 5 or 6, it is characterized in that: the bottom, side of described cooling tower (1) is that the lateral surface bottom is provided with the boss (22) of uncovered (23), and noise elimination air inlet (3) is located at uncovered (23) and is located.
CN201020531847XU 2010-09-16 2010-09-16 Elbow type noise eliminating device of cooling tower of central air conditioner Expired - Fee Related CN201819582U (en)

Priority Applications (1)

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CN201020531847XU CN201819582U (en) 2010-09-16 2010-09-16 Elbow type noise eliminating device of cooling tower of central air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201020531847XU CN201819582U (en) 2010-09-16 2010-09-16 Elbow type noise eliminating device of cooling tower of central air conditioner

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CN201819582U true CN201819582U (en) 2011-05-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102607294A (en) * 2011-09-16 2012-07-25 厦门嘉达环保建造工程有限公司 Cooling tower silencing structure
CN107240872A (en) * 2017-06-20 2017-10-10 中国电力科学研究院 A kind of outdoor electric power equipment box body and its noise-reduction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102607294A (en) * 2011-09-16 2012-07-25 厦门嘉达环保建造工程有限公司 Cooling tower silencing structure
CN107240872A (en) * 2017-06-20 2017-10-10 中国电力科学研究院 A kind of outdoor electric power equipment box body and its noise-reduction method

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Addressee: Ren Xiaoping

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110504

Termination date: 20120916