CN114888027B - Low-noise ventilation system for laboratory - Google Patents
Low-noise ventilation system for laboratory Download PDFInfo
- Publication number
- CN114888027B CN114888027B CN202210579298.0A CN202210579298A CN114888027B CN 114888027 B CN114888027 B CN 114888027B CN 202210579298 A CN202210579298 A CN 202210579298A CN 114888027 B CN114888027 B CN 114888027B
- Authority
- CN
- China
- Prior art keywords
- cover
- ventilation
- hood
- noise
- induced draft
- 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.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 59
- 238000009434 installation Methods 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
Abstract
The application discloses a low-noise ventilation system for a laboratory, which relates to the technical field of ventilation equipment and comprises a ventilation hood, wherein the top of the ventilation hood is connected with a ventilation pipeline, the ventilation hood is installed in the laboratory, the ventilation pipeline communicates the ventilation hood with the outside of the laboratory, a ventilation fan is arranged in the ventilation hood, the ventilation fan is used for conveying air in the laboratory to the outside during operation, an installation box is fixedly connected to the inner wall of the ventilation hood, a buffer installation piece is installed on the outer frame of the ventilation fan, the buffer installation piece is installed in the ventilation fan and supports the ventilation fan, and a noise baffle cover is fixedly installed at the bottom of the inner wall of the ventilation hood. According to the application, the mounting box is arranged in the induced draft fan cover to be in butt joint with the buffer mounting piece, namely, the induced draft fan is supported, the outer frame of the induced draft fan is prevented from being in direct contact with the induced draft fan cover, vibration generated during operation of the induced draft fan is buffered by connection of the hollow air bag, and noise is reduced.
Description
Technical Field
The application relates to the technical field of ventilation equipment, in particular to a low-noise ventilation system for a laboratory.
Background
In laboratory operations, chemicals are often required, but some are volatile and toxic, resulting in a very harsh laboratory environment, which can affect the health of the operator after inhalation without the associated protective measures. Thus, in each laboratory, a special ventilation system is usually provided to keep the laboratory ventilated and safe.
But in the absorbed ventilation system, the fan can vibrate during operation, so that a series of equipment which is installed and supported is driven to vibrate, and larger noise is caused, and in some special experimental environments, the noise can have larger influence, and only great inconvenience is brought.
Disclosure of Invention
The object of the present application is to provide a low noise ventilation system for laboratory use which solves the above-mentioned drawbacks of the prior art.
In order to achieve the above object, the present application provides the following technical solutions: the utility model provides a laboratory is with low noise ventilation system, including the induced air cover, the top of induced air cover is connected with the air pipe, the induced air cover is installed in the laboratory, the air pipe is with induced air cover and laboratory outside intercommunication, the inside of induced air cover is provided with the ventilating fan, the during operation of ventilating fan is carried laboratory air to the outside, the inner wall fixedly connected with mounting box of induced air cover, install the buffering installed part on the frame of ventilating fan, the inside at the ventilating fan is installed to support the ventilating fan, the bottom fixed mounting of induced air cover inner wall has the noise to separate the cover, the bottom of induced air cover outer wall is connected with the dilatation cover, and then when in-service use, through the cooperation of buffering installed part and mounting box, the vibrations that produce when running the ventilating fan are buffered, reduce the production of noise, and because the frame of ventilating fan is with the inner wall lug connection of induced air cover, can avoid the ventilating fan to drive induced air cover whole vibrations, and through the design of noise to separate the cover, when the outer diffusion of partial noise wave along induced air cover inner wall, utilize noise to separate the cover to block that partly noise to separate the noise, thereby can reduce to the whole influence to the experiment system.
Preferably, the buffer mounting piece comprises a hollow air bag, the two sides of the hollow air bag are fixedly connected with hard plates, one hard plate is fixedly connected with the outer frame of the ventilating fan, one hard plate on one side of the ventilating fan is far away from the inner part of the mounting box in a clamping manner, so that the outer frame of the ventilating fan is prevented from being in direct contact with the induced draft hood, and vibration of the ventilating fan is effectively buffered and counteracted by utilizing the connection and the support of the hollow air bag, and noise is reduced.
Preferably, the hollow air bag is kept away from all fixedly connected with elastic bulge on the hard board outer wall of ventilating fan one side and the inner wall of mounting box, and two sets of elastic bulge contact each other, and then can also obtain effective buffering between hard board and the mounting box.
Preferably, the inner edge of the noise shielding cover extends to the upper part of the inner cavity of the induced air cover to form a cover body opposite to the opening direction of the bottom of the induced air cover, and the noise shielding cover is made of sound insulation materials, such as rubber parts, foam parts and the like, so that when part of noise sound waves spread along the outer wall of the induced air cover, rebound can be generated at the noise shielding cover, most of noise is counteracted by the noise shielding cover, and the whole noise of the system can be reduced to the minimum, and the influence on experiments is reduced.
Preferably, the inner wall of the noise shielding cover is fixedly connected with a plurality of groups of reverse extending plates, the outer edges of the reverse extending plates are opposite to the extending direction of the inner edge of the noise shielding cover, and further more noise can be further consumed when noise waves are reflected on the inner wall of the noise shielding cover, and the low noise effect of the device is further improved.
Preferably, the expansion cover is a flexible cover, a rubber cover or a flexible airtight cloth cover is adopted, a supporting rod is arranged around the bottom of the expansion cover, the supporting rod is embedded and sewed in the expansion cover, the outer wall of the induced draft cover is connected with the expansion cover through a movable support, and the size and the height of the expansion cover are further adjustable, so that when the expansion cover faces appointed experimental equipment, the expansion cover can be movably covered on the experimental equipment, and high-efficiency gas collection is performed.
Preferably, the movable support comprises a plurality of groups of connecting rods, two adjacent connecting rods of each group are rotationally connected through a rotating connector, the rotating connector can be a damping type rotating connector commonly used in the market, two connecting rods positioned at the first end and the last end in each group are respectively rotationally connected with the induced draft hood and the supporting rod through the rotating connector, and further structural supports of the plurality of connecting rods are utilized, so that the supporting rods can be lifted and opened and closed for adjustment, the height of the expansion hood can be adjusted, the opening size of the expansion hood can be adjusted, and the inventiveness and the functionality of the system are further improved.
In the technical scheme, the application has the technical effects and advantages that:
1. according to the application, the mounting box is arranged in the induced draft fan cover to be in butt joint with the buffer mounting piece, namely, the induced draft fan is supported, the outer frame of the induced draft fan is prevented from being in direct contact with the induced draft fan cover, vibration generated during operation of the induced draft fan is buffered by connection of the hollow air bag, and noise is reduced;
2. according to the application, through the design of the noise baffle cover, the upward turning of the inner edge of the noise baffle cover and the further blocking of the reverse extending plate are utilized, when part of noise sound waves are spread along the outer side of the inner wall of the induced draft cover, rebound can be generated at the noise baffle cover, and most of noise is counteracted through the noise baffle cover and the reverse extending plate, so that the overall noise of the system can be reduced to the minimum, and the influence on experiments is reduced;
3. according to the application, the movable support is arranged to support the supporting rod, so that the capacity expansion cover is adjusted, and the supporting rod can be lifted and opened and closed by utilizing the movement of the plurality of connecting rods, so that the height of the capacity expansion cover can be adjusted, the opening size of the capacity expansion cover can be adjusted, and the inventiveness and the functionality of the system are further improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic diagram of the overall structure of the present application.
Fig. 2 is a use state diagram of the present application.
Fig. 3 is a schematic diagram showing the connection distribution of the support rod and the expansion cover according to the present application.
Fig. 4 is an enlarged view of the structure of the damper mounting member according to the present application.
Reference numerals illustrate:
1. an induced draft cover; 11. a ventilation duct; 12. a mounting box; 2. a ventilation fan; 3. a buffer mount; 31. a hollow air bag; 32. a hard plate; 33. an elastic protrusion; 4. a noise barrier cover; 41. a reverse extension plate; 5. a capacity expansion cover; 51. a support rod; 6. a movable bracket; 61. a connecting rod; 62. the connector is rotated.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
Examples
The application provides a laboratory low-noise ventilation system as shown in figures 1-4, which comprises a ventilation hood 1, wherein the top of the ventilation hood 1 is connected with a ventilation pipeline 11, the ventilation hood 1 is installed in a laboratory, the ventilation pipeline 11 communicates the ventilation hood 1 with the outside of the laboratory, a ventilation fan 2 is arranged in the ventilation hood 1, the ventilation fan 2 is used for conveying air in the laboratory to the outside, an installation box 12 is fixedly connected to the inner wall of the ventilation hood 1, a buffer installation piece 3 is installed on the outer frame of the ventilation fan 2, the buffer installation piece 3 is installed in the ventilation fan 2 and supports the ventilation fan 2, a noise baffle cover 4 is fixedly installed at the bottom of the inner wall of the ventilation hood 1, and a capacity expansion cover 5 is connected to the bottom of the outer wall of the ventilation hood 1, so that vibration generated during operation of the ventilation fan 2 is buffered through the cooperation of the buffer installation piece 3 and the installation box 12, the noise is reduced, and the outer frame of the ventilation fan 2 is directly connected with the inner wall of the ventilation hood 1, so that the ventilation fan 2 drives the whole ventilation hood 1 to drive the whole fan 1, and noise is prevented from being influenced by the noise baffle cover 4 when the noise baffle cover is arranged on the whole, and noise baffle system is reduced to the noise baffle part by the noise baffle 4.
Further, in the above technical scheme, the buffer mounting piece 3 includes hollow gasbag 31, the equal fixedly connected with stereoplasm board 32 in both sides of hollow gasbag 31, one of them stereoplasm board 32 and the frame fixed connection of ventilation fan 2, the inside at mounting box 12 is installed to one stereoplasm board 32 block of keeping away from ventilation fan 2 one side, thereby avoid ventilation fan 2 frame and induced air cover 1 direct contact, and utilize the connection and the support of hollow gasbag 31, effectively buffer the vibrations of offset to ventilation fan 2, reduce the production and the propagation of noise.
Furthermore, in the above technical solution, the outer wall of the hard plate 32 on the side of the hollow air bag 31 far away from the ventilation fan 2 and the inner wall of the installation box 12 are fixedly connected with elastic protrusions 33, and the two groups of elastic protrusions 33 are in contact with each other, so that the hard plate 32 and the installation box 12 can be effectively buffered.
Furthermore, in the above technical scheme, the inner edge of the noise baffle cover 4 extends to the upper part of the inner cavity of the induced air cover 1 to form a cover body opposite to the opening direction of the bottom of the induced air cover 1, and the noise baffle cover 4 is made of sound insulation materials, such as rubber parts, foam parts and the like, so that when part of noise sound waves spread along the outer wall of the induced air cover 1, rebound can be generated at the noise baffle cover 4, and most of noise is counteracted by the noise baffle cover 4, so that the overall noise of the system can be reduced to the minimum, and the influence on experiments is reduced.
Further, in the above technical scheme, the inner wall of the noise shielding cover 4 is fixedly connected with a plurality of groups of reverse extending plates 41, and the outer edges of the reverse extending plates 41 are opposite to the extending direction of the inner edge of the noise shielding cover 4, so that more noise can be further consumed when noise waves are reflected on the inner wall of the noise shielding cover 4, and the low noise effect of the device is further improved.
Further, in the above technical scheme, the capacity expansion cover 5 is a flexible cover, a rubber cover or a flexible airtight cloth cover is adopted, the supporting rods 51 are installed around the bottom of the capacity expansion cover 5, the supporting rods 51 are embedded and sewn in the capacity expansion cover 5, the outer wall of the induced draft cover 1 is connected with the capacity expansion cover 5 through the movable support 6, and then the size and the height of the capacity expansion cover 5 are adjustable, so that when the designated experimental equipment is faced, the capacity expansion cover 5 can be movably covered on the experimental equipment for high-efficiency gas collection.
Further, in the above technical solution, the movable bracket 6 includes multiple groups of connecting rods 61, two adjacent connecting rods 61 of each group are rotationally connected through a rotating connector 62, the rotating connector 62 can be a damping type rotating connector commonly used in the market, two connecting rods 61 located at the first end and the last end in each group are respectively rotationally connected with the induced draft hood 1 and the supporting rod 51 through the rotating connector 62, and further structural supports of the multiple connecting rods 61 are utilized, so that the supporting rod 51 can be lifted and opened and closed for adjustment, the height of the expansion hood 5 can be adjusted, the opening size of the expansion hood 5 can also be adjusted, and the inventiveness and functionality of the system are further improved.
Working principle: the installation box 12 is arranged in the induced draft fan cover 1 to be in butt joint with the buffer installation piece 3, namely, when the induced draft fan 2 is supported, the outer frame of the induced draft fan 2 is prevented from being in direct contact with the induced draft fan cover 1, vibration generated during operation of the induced draft fan 2 is buffered by the connection of the hollow air bags 31, noise is reduced, the noise shielding cover 4 is designed, the inner edge of the noise shielding cover 4 is turned up, and the reverse extension plate 41 is further blocked, when part of noise sound waves spread along the inner wall of the induced draft fan cover 1, rebound is generated at the noise shielding cover 4, most of noise is counteracted by the noise shielding cover 4 and the reverse extension plate 41, so that the overall noise of a system is reduced to the minimum, the influence on experiments is reduced, the support rod 51 is supported by the movable support frame 6, the expansion cover 5 is further adjusted, the support rod 51 can be lifted and opened and closed by the movement of the plurality of the connection rods 61, the height of the expansion cover 5 can be adjusted, the opening size of the expansion cover 5 can be adjusted, and the system further improved.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (3)
1. The utility model provides a laboratory is with low noise ventilation system, includes induced air cover (1), the top of induced air cover (1) is connected with air pipe (11), induced air cover (1) are installed in the laboratory, the inside of induced air cover (1) is provided with ventilation fan (2), its characterized in that: the inner wall of the induced draft hood (1) is fixedly connected with a mounting box (12), a buffer mounting piece (3) is mounted on an outer frame of the ventilation fan (2), the buffer mounting piece (3) is mounted inside the ventilation fan (2) and supports the ventilation fan (2), a noise baffle hood (4) is fixedly mounted at the bottom of the inner wall of the induced draft hood (1), a dilatation hood (5) is connected to the bottom of the outer wall of the induced draft hood (1), the inner edge of the noise baffle hood (4) extends above the inner cavity of the induced draft hood (1) to form a hood body opposite to the opening direction of the bottom of the induced draft hood (1), a plurality of groups of reverse extension plates (41) are fixedly connected to the inner wall of the noise baffle hood (4), and the outer edge of the reverse extension plates (41) is opposite to the extending direction of the inner edge of the noise baffle hood (4).
The expansion cover (5) is a flexible cover, a rubber cover or a flexible airtight cloth cover is adopted, a supporting rod (51) is arranged around the bottom of the expansion cover (5), the supporting rod (51) is embedded and sewed in the expansion cover (5), and the outer wall of the induced draft cover (1) is connected with the expansion cover (5) through a movable bracket (6);
the movable support (6) comprises a plurality of groups of connecting rods (61), two adjacent connecting rods (61) in each group are connected in a rotating mode through rotating connectors (62), and the two connecting rods (61) located at the first end and the last end in each group are connected with the induced draft hood (1) and the supporting rods (51) in a rotating mode through the rotating connectors (62).
2. A laboratory low noise ventilation system according to claim 1, wherein: the buffer mounting piece (3) comprises a hollow air bag (31), wherein both sides of the hollow air bag (31) are fixedly connected with hard plates (32), one hard plate (32) is fixedly connected with the outer frame of the ventilating fan (2), and one hard plate (32) on one side far away from the ventilating fan (2) is clamped and mounted in the mounting box (12).
3. A laboratory low noise ventilation system according to claim 2, wherein: elastic protrusions (33) are fixedly connected to the outer wall of a hard plate (32) on one side, far away from the ventilating fan (2), of the hollow air bag (31) and the inner wall of the installation box (12), and the two groups of elastic protrusions (33) are in contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210579298.0A CN114888027B (en) | 2022-05-26 | 2022-05-26 | Low-noise ventilation system for laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210579298.0A CN114888027B (en) | 2022-05-26 | 2022-05-26 | Low-noise ventilation system for laboratory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114888027A CN114888027A (en) | 2022-08-12 |
| CN114888027B true CN114888027B (en) | 2023-11-14 |
Family
ID=82725555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210579298.0A Active CN114888027B (en) | 2022-05-26 | 2022-05-26 | Low-noise ventilation system for laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114888027B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0694280A (en) * | 1992-09-14 | 1994-04-05 | Toshiba Corp | Ceiling ventilating fan |
| JPH08226696A (en) * | 1995-02-21 | 1996-09-03 | Mitsubishi Heavy Ind Ltd | Air supply and exhaust orifice for ventilation device |
| CN2261730Y (en) * | 1996-04-15 | 1997-09-10 | 王林 | Thermal insulation sterilizing cover |
| CN104963899A (en) * | 2015-07-14 | 2015-10-07 | 柳州职业技术学院 | Silencer of draught fan |
| CN206122302U (en) * | 2016-06-17 | 2017-04-26 | 徐州工业职业技术学院 | Rubber laboratory ventilation device |
| CN206500418U (en) * | 2016-11-28 | 2017-09-19 | 覃华正 | A kind of plastics test suspended hood |
| CN208707853U (en) * | 2018-08-23 | 2019-04-05 | 深圳禾胜成科技有限公司 | A kind of vehicle audio of vibration-damping radiating |
| CN110465165A (en) * | 2019-08-15 | 2019-11-19 | 上海汇海真空机械设备有限公司 | A kind of dedicated cooling driers of vacuum nitrogen Pesticidal and sterilizing sterilizing equipment decontaminating apparatus |
| CN210832414U (en) * | 2019-10-25 | 2020-06-23 | 吴振亮 | Be used for building green energy-conserving ventilation unit |
| CN210895333U (en) * | 2020-01-12 | 2020-06-30 | 广州欣旺科技有限公司 | Heat radiator for reinforcement type computer |
| CN211659503U (en) * | 2020-01-10 | 2020-10-13 | 深圳斯通纳环保技术有限公司 | Waste gas collecting hood for waste gas treatment |
| CN211975522U (en) * | 2020-03-23 | 2020-11-20 | 开封大学 | Computer machine case fan |
| CN212177463U (en) * | 2020-04-13 | 2020-12-18 | 方璇 | Novel reduce fan of degree of rocking |
| CN213808138U (en) * | 2020-12-15 | 2021-07-27 | 江苏恒润信息科技有限公司 | Centrifugal fan for dust removal with shock attenuation buffering base |
| CN215613989U (en) * | 2021-07-27 | 2022-01-25 | 重庆理文卫生用纸制造有限公司 | Gas hood internal dust removal device for production of household paper |
| CN215719840U (en) * | 2021-08-12 | 2022-02-01 | 深圳市丰盛源电子有限公司 | Radiator fan for computer with temperature detection function |
-
2022
- 2022-05-26 CN CN202210579298.0A patent/CN114888027B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0694280A (en) * | 1992-09-14 | 1994-04-05 | Toshiba Corp | Ceiling ventilating fan |
| JPH08226696A (en) * | 1995-02-21 | 1996-09-03 | Mitsubishi Heavy Ind Ltd | Air supply and exhaust orifice for ventilation device |
| CN2261730Y (en) * | 1996-04-15 | 1997-09-10 | 王林 | Thermal insulation sterilizing cover |
| CN104963899A (en) * | 2015-07-14 | 2015-10-07 | 柳州职业技术学院 | Silencer of draught fan |
| CN206122302U (en) * | 2016-06-17 | 2017-04-26 | 徐州工业职业技术学院 | Rubber laboratory ventilation device |
| CN206500418U (en) * | 2016-11-28 | 2017-09-19 | 覃华正 | A kind of plastics test suspended hood |
| CN208707853U (en) * | 2018-08-23 | 2019-04-05 | 深圳禾胜成科技有限公司 | A kind of vehicle audio of vibration-damping radiating |
| CN110465165A (en) * | 2019-08-15 | 2019-11-19 | 上海汇海真空机械设备有限公司 | A kind of dedicated cooling driers of vacuum nitrogen Pesticidal and sterilizing sterilizing equipment decontaminating apparatus |
| CN210832414U (en) * | 2019-10-25 | 2020-06-23 | 吴振亮 | Be used for building green energy-conserving ventilation unit |
| CN211659503U (en) * | 2020-01-10 | 2020-10-13 | 深圳斯通纳环保技术有限公司 | Waste gas collecting hood for waste gas treatment |
| CN210895333U (en) * | 2020-01-12 | 2020-06-30 | 广州欣旺科技有限公司 | Heat radiator for reinforcement type computer |
| CN211975522U (en) * | 2020-03-23 | 2020-11-20 | 开封大学 | Computer machine case fan |
| CN212177463U (en) * | 2020-04-13 | 2020-12-18 | 方璇 | Novel reduce fan of degree of rocking |
| CN213808138U (en) * | 2020-12-15 | 2021-07-27 | 江苏恒润信息科技有限公司 | Centrifugal fan for dust removal with shock attenuation buffering base |
| CN215613989U (en) * | 2021-07-27 | 2022-01-25 | 重庆理文卫生用纸制造有限公司 | Gas hood internal dust removal device for production of household paper |
| CN215719840U (en) * | 2021-08-12 | 2022-02-01 | 深圳市丰盛源电子有限公司 | Radiator fan for computer with temperature detection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114888027A (en) | 2022-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108302622A (en) | A kind of central air conditioning fan coil unit mounting structure of vibration and noise reducing | |
| CN114888027B (en) | Low-noise ventilation system for laboratory | |
| CN207947060U (en) | A kind of sound arrester of noise equipment | |
| CN219548514U (en) | Noise reduction device for intermediate heat exchange station | |
| CN219824583U (en) | Induced draft table device | |
| CN210087899U (en) | Refrigerating compressor vibration/noise reduction device for refrigeration display cabinet | |
| CN210397014U (en) | Noise reduction device of industrial air compressor | |
| CN208332577U (en) | Ventilated type computer room | |
| CN205654613U (en) | Fan sound -proof housing | |
| CN215542666U (en) | Silencing vibration screen | |
| CN210379862U (en) | Dustproof power cabinet | |
| CN208448847U (en) | A kind of pulse bag type dust collector that operation noise is small | |
| CN209180132U (en) | The sound arrester of high pressure blower | |
| CN214998326U (en) | Adjustable ventilator | |
| CN210660764U (en) | Ventilation blower device that noise reduction effect is good | |
| CN218249044U (en) | Bag-type dust collector capable of removing dust by vibration | |
| CN206571102U (en) | A kind of smoke control system | |
| CN209908861U (en) | Thermal power plant fan vibration/noise reduction device | |
| CN216691622U (en) | Ceiling air cabinet capable of reducing low-frequency noise | |
| CN212481535U (en) | Clean operating room is with high-efficient static pressure case | |
| CN216064770U (en) | Laboratory ventilation system | |
| CN219412983U (en) | Wall-mounted fan | |
| CN213955684U (en) | Noise reduction mounting structure of heat pump unit | |
| CN211230994U (en) | Centrifugal blower for chemical production | |
| CN212838462U (en) | Fan for chain plate belt type vacuum material filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |