CN114811934B - Noise control method for self-cooling induced air machine room and blower machine room - Google Patents
Noise control method for self-cooling induced air machine room and blower machine room Download PDFInfo
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- CN114811934B CN114811934B CN202110087727.8A CN202110087727A CN114811934B CN 114811934 B CN114811934 B CN 114811934B CN 202110087727 A CN202110087727 A CN 202110087727A CN 114811934 B CN114811934 B CN 114811934B
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- blower
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- induced
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- 238000001816 cooling Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000009423 ventilation Methods 0.000 claims abstract description 39
- 230000017525 heat dissipation Effects 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- 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
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
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- 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
Abstract
The invention provides a noise control method for a self-cooling induced air machine room and a blower machine room, which comprises the following steps: s1: total air quantity Q for cooling fan room 1 The method comprises the steps of carrying out a first treatment on the surface of the S2: judgment of Q 1 With rated air quantity Q of blower 2 Is of a size of (2); s3: if Q 1 Less than Q 2 Then go to S4; if Q 1 Not less than Q 2 Ending the process; s4: determining the position of a ventilation channel of a public wall body according to equipment arrangement in a blower room and a blower air inlet, wherein the public wall body extends along a first direction, and the ventilation channel is far away from the blower air inlet along the first direction; s5: determining the position of an air inlet channel of the induced-draft machine room according to the equipment arrangement in the induced-draft machine room and the position of a ventilation channel, wherein the air inlet channel is opposite to the ventilation channel along a second direction perpendicular to the first direction and is far away from the ventilation channel along the first direction; s6: according to Q 1 Determining the size of an air inlet channel; s7: a muffler is provided at the intake passage. According to the noise control method of the present invention, the number of devices can be reduced, and the cost can be reduced.
Description
Technical Field
The invention relates to the field of noise control, in particular to a noise control method for a self-cooling induced air machine room and a blower machine room.
Background
With the economic development and the increasing requirements of people on living environments, the problem of noise pollution of industrial enterprises becomes a social commonality problem, and the noise pollution treatment becomes a problem which the enterprises are faced with and have to solve. Therefore, noise pollution control technology has received a great deal of attention.
The traditional ventilation and heat dissipation and noise control scheme of the fan room generally needs to be provided with a plurality of fans and a plurality of silencers, is high in cost and occupies more space, and is not beneficial to optimization of the fan room structure.
Accordingly, there is a need to provide a noise control method for a self-cooling induced draft room and a blower room to at least partially solve the problems in the related art.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to at least partially solve the above problems, the present invention provides a noise control method for a self-cooling induced draft room and a blower room, the method comprising:
s1: calculating the total air quantity Q required by heat dissipation of the induced air machine room and the blower machine room 1 ；
S2: judging the Q 1 And rated air quantity Q of the blower in the blower room 2 Is of a size of (2);
s3: if said Q 1 Less than the Q 2 Then go to step S4; if said Q 1 Not less than said Q 2 Ending the process;
s4: determining the positions of ventilation channels of public walls of the induced air machine room and the blower machine room according to equipment arrangement in the blower machine room and blower air inlets, wherein the public walls extend along a first direction, and the ventilation channels are far away from the blower air inlets along the first direction;
s5: determining the position of an air inlet channel of the induced-air machine room according to the equipment arrangement in the induced-air machine room and the position of the ventilation channel of the public wall body, wherein the air inlet channel is opposite to the ventilation channel along a second direction perpendicular to the first direction and is far away from the ventilation channel along the first direction;
s6: according to said Q 1 Determining the size of the air inlet channel;
s7: a muffler is provided at the intake passage.
According to the noise control method for the self-cooling induced-draft machine room and the blower machine room, when the rated air volume of the blower can meet the total air volume required by heat dissipation of equipment in the induced-draft machine room and equipment in the blower machine room, according to the arrangement of the equipment in the blower machine room and the arrangement of the air inlets of the blower, the ventilation channels of the public walls of the induced-draft machine room and the blower machine room are arranged to be far away from the air inlets of the blower in a first direction along the extension of the public walls, then according to the positions of the ventilation channels, the air inlet channels of the induced-draft machine room are arranged to be opposite to the ventilation channels in a second direction perpendicular to the first direction, and are far away from the ventilation channels in the first direction, so that the air circulation paths in the induced-draft machine room and the blower machine room can be optimized simultaneously, the cooling of the equipment in the induced-draft machine room and the equipment in the blower machine room can be realized simultaneously by effectively utilizing the air inlet of the blower, the quantity of heat dissipation equipment such as a blower can be reduced, and the cost can be effectively reduced; the muffler is arranged at the air inlet channel of the induced air machine room, so that the noise of the induced air machine room and the air blower machine room can be effectively reduced, and the sound environment quality of the air blower machine room and the air blower machine room in a factory is improved; in addition, the reduction of heat dissipation equipment such as fans can also reduce the use quantity of the muffler, thereby being beneficial to further reducing the cost.
Optionally, the Q 1 The following formula is adopted for calculation:
Q 1 ＝P/(ρ·C p ·Δt)
wherein: p is the total heat dissipation of the equipment in the induced air machine room and the equipment in the blower machine room; ρ is the density of air; c (C) p Specific heat for air; Δt is the temperature difference between the air of the air outlet of the blower and the air of the air inlet channel.
Optionally, the step S7 includes:
s701: the type of the muffler is selected according to the size of the intake passage.
Optionally, the first access door of the induced air machine room is provided as a sound insulation door.
Optionally, a second access door of the blower room is provided as a sound insulation door.
Optionally, a first sound absorbing and insulating layer is arranged on the inner side of the first wall body of the induced air machine room.
Optionally, a second sound absorbing and insulating layer is arranged on the inner side of the second wall of the blower room.
Optionally, third sound absorbing and insulating layers are respectively arranged on two sides of the public wall body.
Drawings
The following drawings of embodiments of the present invention are included as part of the invention. Embodiments of the present invention and their description are shown in the drawings to explain the principles of the invention.
In the accompanying drawings:
fig. 1 is a schematic view of the structure of a self-cooling induced draft room and a blower room according to a preferred embodiment of the present invention; and
fig. 2 is a flow chart of a noise control method for a self-cooling induced air machine room and a blower machine room according to a preferred embodiment of the present invention.
Reference numerals illustrate:
10: wind machine room
100: induced air machine room
110: draught fan
111: induced draft fan air inlet
112: air outlet of induced draft fan
120: first wall body
121: first sound absorbing and insulating layer
130: muffler
140: first access door
150: air inlet channel
200: blower room
210: blower fan
211: air inlet of blower
212: air outlet of blower
220: second wall body
221: second sound absorbing and insulating layer
230: second access door
300: public wall
310: ventilation channel
320: third sound-absorbing layer
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that embodiments of the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the invention.
In order to thoroughly understand the present invention, a detailed description will be given in the following description to explain the noise control method for the self-cooling induced air machine room and the blower machine room of the present invention. It will be apparent that the invention is not limited to the specific details of those skilled in the art of noise control. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.
Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present invention and not limit the present invention.
Referring to fig. 1, a blower room 10 according to a preferred embodiment of the present invention includes a induced draft room 100 and a blower room 200. The induced draft room 100 and the blower room 200 are connected together, and both have a common wall 300. Wherein the common wall 300 extends along a first direction D1.
An induced draft fan 110 is usually arranged in the induced draft fan room 100, an induced draft fan air outlet 112 of the induced draft fan 110 is communicated with other equipment, and after air enters the induced draft fan 110 from an induced draft fan air inlet 111 of the induced draft fan 110, the air enters the other equipment through the induced draft fan air outlet 112 so as to provide required air quantity for the work of the other equipment. In the illustrated embodiment, the centerline of the induced draft fan 110 is parallel to the first direction D1. That is, the center line of the induced draft fan 110 is parallel to the extending direction of the common wall 300. It can be appreciated that the arrangement manner of the induced draft fan 110 may be changed according to actual needs, so that the center line of the induced draft fan 110 is perpendicular to the first direction D1.
In addition to the induced draft fan 110, other equipment for maintaining the normal operation of the induced draft fan 100 is generally required in the induced draft fan 100. Both the induced draft fan 110 and these devices need to be ventilated and cooled during operation. In order to improve the quality of the acoustic environment in the factory where the induced draft machine room 100 is located, noise treatment needs to be performed on the induced draft machine 110 and the ventilation system thereof, so as to effectively reduce the noise value in the factory.
A blower 210 is typically provided in the blower room 200 for providing a required air volume for other equipment to operate. In the illustrated embodiment, the centerline of the blower 210 is parallel to the first direction D1. I.e., the center line of the blower 210 is parallel to the extending direction of the common wall 300.
In addition to the blower 210, other equipment for maintaining the proper operation of the blower room 200 is generally required in the blower room 200. Both blower 210 and these devices require ventilation and heat dissipation during operation. In order to improve the quality of the acoustic environment in the factory where the blower room 200 is located, noise treatment needs to be performed on the blower 210 and its ventilation system, so as to effectively reduce the noise value in the factory.
In order to ventilate and reduce the heat and noise of the wind turbine room 10 including the wind turbine room 100 and the blower room 200 such as in the illustrated embodiment, the present invention provides a noise control method for the self-cooling wind turbine room 100 and the blower room 200 to simultaneously cool the wind turbine room 100 and the blower room 200, that is, to simultaneously cool the equipment in the wind turbine room 100 and the equipment in the blower room 200, using the air intake of the blower 210 itself.
Referring specifically to fig. 2, the noise control method for the self-cooling induced air machine room 100 and the blower machine room 200 according to one preferred embodiment of the present invention includes,s1: calculate the total air quantity Q required by the heat dissipation of the induced air machine room 100 and the blower machine room 200 1 。
Total air quantity Q 1 Specifically, the following formula can be adopted for calculation:
Q 1 ＝P/(ρ·C p ·Δt)
wherein: p is the total heat dissipation (W) of the equipment in the induced draft fan room 100 and the equipment in the blower room 200, typically calculated as 5% -10% of the total rated power of the induced draft fan 110 and the blower 210; ρ is the density of air (kg/m) 3 )；C p Specific heat of air (J/kg. Deg.C); Δt is the temperature difference (DEG C) between the air at the blower outlet 212 of the blower 210 and the air in the air intake passage 150, and is usually selected at 10 to 20 ℃.
In the process of calculating and obtaining the total air quantity Q required by the heat dissipation of the induced air machine room 100 and the blower machine room 200 1 After that, step S2 is performed: judgment of Q 1 Rated air quantity Q with blower 210 2 Is of a size of (a) and (b).
Then, step S3 is performed: if Q 1 Not less than Q 2 The rated air volume Q of the blower 210 will be described 2 Cannot meet the total air quantity Q required by heat dissipation of equipment in the induced air machine room 100 and the blower machine room 200 1 It is difficult to simultaneously cool the equipment in the induced draft fan room 100 and the equipment in the blower room 200 by using the air intake of the blower 210 itself, and then the scheme is ended, and other methods need to be considered; if Q 1 Less than Q 2 The description will be made on the case where cooling of the equipment in the induced draft fan room 100 and the equipment in the blower room 200 can be simultaneously achieved by the intake air of the blower 210 itself, and the process proceeds to step S4.
In step S4, the positions of the ventilation channels 310 of the common wall 300 of the induced air room 100 and the blower room 200 are determined according to the arrangement of the equipment in the blower room 200 and the arrangement of the blower inlet 211 of the blower 210, so as to provide the communication ports for the induced air room 100 and the blower room 200 to circulate air. The ventilation channel 310 is disposed at a position of the common wall 300 away from the blower inlet 211, that is, along the first direction D1, the ventilation channel 310 is away from the blower inlet 211. In this way, after the cooling air enters the blower room 200 from the induced air room 100 through the ventilation channel 310, the cooling air will flow through other devices in the blower room 200, then enter the blower 210 from the blower air inlet 211, and enter other air-using devices from the blower air outlet 212 after being pressurized by the blower 210, so that the circulation path of the cooling air in the blower room 200 can be effectively increased, the cooling air can fully flow through the devices in the blower room 200, the purpose of cooling the blower 210 and other devices in the blower room 200 by using the air inlet of the blower 210 is achieved, and the number of heat dissipation devices such as fans in the blower 210 can be reduced, thereby effectively reducing the cost.
The size of the ventilation channel 310 can be set according to actual needs to meet the total air quantity Q of the cooling air required for heat dissipation of the induced air room 100 and the blower room 200 1 To be accurate.
After determining the position of the ventilation channel 310, step S5 is performed: the position of the air intake passage 150 of the induced air room 100 is determined according to the arrangement of the equipment in the induced air room 100 and the position of the ventilation passage 310 of the common wall 300 to provide an inlet of cooling air for the induced air room 100. The air intake channel 150 is disposed on a first wall 120 of the induced-air machine room 100 opposite to the public wall 300, and is disposed at a position of the first wall 120 far away from the ventilation channel 310, so that the air intake channel 150 is opposite to the ventilation channel 310 along the second direction D2, and far away from the ventilation channel 310 along the first direction D1. In this way, after the cooling air enters the induced air machine room 100 through the air inlet channel 150, the cooling air will flow through the induced draft fan 110 and other devices in the induced air machine room 100, so that the flow path of the cooling air in the induced air machine room 100 can be effectively increased, and after the cooling of the induced air machine room 100 is achieved, the cooling air enters the blower machine room 200 from the ventilation channel 310, so as to continue cooling the blower machine room 200.
After the position of the intake passage 150 is determined, step S6 is performed: according to Q 1 The size of the intake passage 150 is determined, that is, the dimensions of the intake passage 150, such as the length and width of the intake passage 150, etc.
In order to effectively reduce noise of the induced air room 100 and the blower room 200 and improve sound environment quality in the factory where the induced air room 100 and the blower room 200 are located, it is generally necessary to provide the muffler 130. The muffler 130 is preferably provided at the intake passage 150 to reduce noise of the cooling air inlet of the induced air house 100. Therefore, after determining the position and size of the intake passage 150, step S7 is generally performed: a muffler 130 is provided at the intake passage 150. The muffler 130 is preferably connected to the intake passage 150 using expansion bolts for ease of installation and maintenance.
According to the noise control method for the self-cooling induced draft fan room 100 and the blower room 200 of the present invention, when the rated air quantity Q of the blower 210 2 Can meet the total air quantity Q required by heat dissipation of the equipment in the induced air machine room 100 and the equipment in the blower machine room 200 1 In the process, according to the arrangement of the equipment in the blower room 200 and the arrangement of the air inlet 211 of the blower, the ventilation channels 310 of the public wall 300 of the blower room 100 and the blower room 200 are arranged to be far away from the air inlet 211 of the blower along the first direction D1 extending along the public wall 300, and then according to the position of the ventilation channels 310, the air inlet channels 150 of the blower room 100 are arranged to be opposite to the ventilation channels 310 along the second direction D2 perpendicular to the first direction D1 and far away from the ventilation channels 310 along the first direction D1, so that the air circulation paths in the blower room 100 and the blower room 200 can be optimized at the same time, the cooling of the equipment in the blower room 100 and the equipment in the blower room 200 can be realized by effectively utilizing the air inlet of the blower 210, the quantity of the heat dissipation equipment such as a blower can be reduced, and the cost can be effectively reduced; the muffler 130 is arranged at the air inlet channel 150 of the induced-draft machine room 100, so that the noise of the induced-draft machine room 100 and the blower machine room 200 can be effectively reduced, and the sound environment quality of the blower machine room 200 and the factory where the blower machine room 200 is located can be improved; in addition, the reduction of heat dissipation devices such as fans can reduce the use quantity of the muffler 130, which is beneficial to further reducing the cost.
Before the muffler 130 is provided, step S701 is required: the type of muffler 130 is selected according to the size of the intake passage 150. The muffler 130 is sized according to the size of the intake passage 150, and a specific type may be set according to actual needs, such as a sheet type muffler or a matrix type muffler. It is understood that the kind of the muffler 130 is not limited to the two forms described above.
In the embodiment shown in fig. 1, the number of the induced draft fans 110 and the blowers 210 is 2, and it is understood that the number of the induced draft fans 110 and the blowers 210 may be set according to actual needs, such as 1 or more.
The induced draft room 100 is provided with a first access door 140 for facilitating the service and maintenance of equipment in the induced draft room 100 by staff. In the embodiment shown in fig. 1, the first access door 140 is provided at a position of the induced air house 100 opposite to the common wall 300, that is, at the first wall 120 opposite to the common wall 300. It will be appreciated that the first access door 140 may be disposed at other locations of the induced air room 100 according to actual needs, such as on the first wall 120 of the induced air room 100 adjacent to the common wall 300.
In order to further reduce noise of the induced air room 100, effectively improve user experience, the first access door 140 of the induced air room 100 is preferably set to be a soundproof door to improve the sound insulation amount of the first access door 140.
The blower room 200 is provided with a second access door 230 for facilitating the service and maintenance of the equipment in the blower room 200 by the staff. In the embodiment shown in fig. 1, the second access door 230 is provided at a position of the blower room 200 opposite to the common wall 300, that is, at the second wall 220 opposite to the common wall 300. It will be appreciated that the second access door 230 may be provided at other locations of the blower room 200 according to actual needs, such as on the second wall 220 of the blower room 200 adjacent to the common wall 300
Also, in order to further reduce noise of the blower room 200, effectively improve user experience, it is preferable to provide the second access door 230 of the blower room 200 as a soundproof door to improve the sound insulation amount of the second access door 230.
A first sound absorbing and insulating layer 121 is preferably disposed on an inner wall of the first wall 120 of the induced air room 100, so as to eliminate reverberation in the induced air room 100, and further achieve the purpose of further reducing noise of the induced air room 100.
Likewise, a second sound absorbing and insulating layer 221 is preferably disposed on the inner wall of the second wall 220 of the blower room 200 to eliminate reverberation in the blower room 200, thereby further reducing noise of the blower room 200.
The third sound absorbing and insulating layers 320 are respectively disposed at both sides of the common wall 300 of the induced air machine room 100 and the blower machine room 200, thereby further reducing noise of the blower machine room 10.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.
Claims (7)
1. A noise control method for a self-cooling induced draft room and a blower room, the method comprising:
s1: calculating the total air quantity Q required by heat dissipation of the induced air machine room and the blower machine room 1 The Q is 1 The following formula is adopted for calculation:
Q 1 ＝P/(ρ·C p ·Δt)
wherein: p is the total heat dissipation of the equipment in the induced air machine room and the equipment in the blower machine room; ρ is the density of air; c (C) p Specific heat for air; Δt is the blower row of the blowerTemperature difference between air of the air port and air of the air inlet channel;
s2: judging the Q 1 And rated air quantity Q of the blower in the blower room 2 Is of a size of (2);
s3: if said Q 1 Less than the Q 2 Then go to step S4; if said Q 1 Not less than said Q 2 Ending the process;
s4: determining the positions of ventilation channels of public walls of the induced air machine room and the blower machine room according to equipment arrangement in the blower machine room and blower air inlets, wherein the public walls extend along a first direction, and the ventilation channels are far away from the blower air inlets along the first direction;
s5: determining the position of an air inlet channel of the induced-air machine room according to the equipment arrangement in the induced-air machine room and the position of the ventilation channel of the public wall body, wherein the air inlet channel is opposite to the ventilation channel along a second direction perpendicular to the first direction and is far away from the ventilation channel along the first direction;
s6: according to said Q 1 Determining the size of the air inlet channel;
s7: a muffler is provided at the intake passage.
2. The noise control method according to claim 1, characterized in that the step S7 includes:
s701: the type of the muffler is selected according to the size of the intake passage.
3. The noise control method of claim 1, wherein the first access door of the induced draft room is provided as a soundproof door.
4. The noise control method according to claim 1, characterized in that the second access door of the blower room is provided as a sound insulation door.
5. The noise control method according to claim 1, wherein a first sound absorbing and insulating layer is provided inside a first wall of the induced air room.
6. The noise control method according to claim 1, wherein a second sound absorbing and insulating layer is provided inside a second wall of the blower room.
7. The noise control method according to claim 1, wherein third sound absorbing and insulating layers are provided on both sides of the common wall, respectively.
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| CN202110087727.8A CN114811934B (en) | 2021-01-21 | 2021-01-21 | Noise control method for self-cooling induced air machine room and blower machine room |
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| CN202110087727.8A CN114811934B (en) | 2021-01-21 | 2021-01-21 | Noise control method for self-cooling induced air machine room and blower machine room |
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| CN202885180U (en) * | 2012-09-14 | 2013-04-17 | 亚翔系统集成科技（苏州）股份有限公司 | Air inlet measurement device for variable air rate air conditioning system |
| CN104652633A (en) * | 2015-02-11 | 2015-05-27 | 瓮福达州化工有限责任公司 | Noise reduction device for Roots blower |
| CN206206174U (en) * | 2016-11-16 | 2017-05-31 | 章丘丰源机械有限公司 | A kind of Roots blower |
| CN109699152A (en) * | 2017-10-23 | 2019-04-30 | 株洲中车时代电气股份有限公司 | A kind of current transformer heat dissipation wind channel and current transformer |
| CN208282380U (en) * | 2018-01-29 | 2018-12-25 | 广州市华德工业有限公司 | Variable air quantity condenses radiator and exhaust system |
| CN108644074A (en) * | 2018-05-02 | 2018-10-12 | 中国船舶重工集团海装风电股份有限公司 | Wind power generating set, wind generating set engine room cooling system and its design method |
| CN208956387U (en) * | 2018-08-23 | 2019-06-07 | 河南省云乐科技有限公司 | A kind of computer room heat dissipation device of adjusting air inlet amount |
| CN109723244A (en) * | 2019-01-08 | 2019-05-07 | 深圳市兴派建筑工程有限公司 | Generators noise reduction construction method |
| CN212201473U (en) * | 2020-03-03 | 2020-12-22 | 福建名科环保工程有限公司 | Mute noise reduction generator room structure |
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