CN114888027A - Laboratory is with low noise ventilation system - Google Patents
Laboratory is with low noise ventilation system Download PDFInfo
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- CN114888027A CN114888027A CN202210579298.0A CN202210579298A CN114888027A CN 114888027 A CN114888027 A CN 114888027A CN 202210579298 A CN202210579298 A CN 202210579298A CN 114888027 A CN114888027 A CN 114888027A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 45
- 230000003139 buffering effect Effects 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims 1
- 210000001503 joint Anatomy 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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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
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Air-Flow Control Members (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a low-noise ventilation system for a laboratory, which relates to the technical field of ventilation equipment and comprises an air draft cover, wherein the top of the air draft cover is connected with a ventilation pipeline, the air draft cover is arranged in a laboratory, the ventilation pipeline is used for communicating the air draft cover with the outer periphery of the laboratory, a ventilation fan is arranged in the air draft cover, the ventilation fan is used for conveying air in the laboratory to the outer periphery when working, the inner wall of the air draft cover is fixedly connected with a mounting box, a buffer mounting part is arranged on the outer frame of the ventilation fan, the buffer mounting part is arranged in the ventilation fan and supports the ventilation fan, and a noise shielding cover is fixedly arranged at the bottom of the inner wall of the air draft cover. According to the invention, the mounting box is arranged in the air draft cover and is in butt joint with the buffer mounting part, so that the outer frame of the ventilating fan can be prevented from being in direct contact with the air draft cover while the ventilating fan is supported, and the vibration generated during the operation of the ventilating fan is buffered by utilizing the connection of the hollow air bag, so that the generation of noise is reduced.
Description
Technical Field
The invention relates to the technical field of ventilation equipment, in particular to a low-noise ventilation system for a laboratory.
Background
In the operation of laboratory, often need use the chemicals, but some chemicals have volatility, have toxicity simultaneously, lead to the laboratory environment very abominable, if do not take relevant safeguard procedures, these chemicals can influence operating personnel's health after inhaling the human body. Therefore, in each laboratory, a special ventilation system is usually provided to keep the laboratory ventilated and safe.
However, in the ventilation system with the fan, the operation of the fan can generate vibration, so that a series of devices mounted and supported are driven to generate vibration, and then larger noise is caused.
Disclosure of Invention
The invention aims to provide a low-noise ventilation system for a laboratory, which aims to overcome the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: a laboratory low-noise ventilation system comprises an air draft cover, wherein the top of the air draft cover is connected with an air pipeline, the air draft cover is installed in a laboratory and is used for communicating the air draft cover with the outer periphery of the laboratory, a ventilation fan is arranged in the air draft cover and is used for conveying air in the laboratory to the outer periphery when working, a mounting box is fixedly connected to the inner wall of the air draft cover, a buffering mounting part is installed on the outer frame of the ventilation fan and is installed in the ventilation fan and used for supporting the ventilation fan, a noise blocking cover is fixedly installed at the bottom of the inner wall of the air draft cover, a containing expanding cover is connected to the bottom of the outer wall of the air draft cover, and when the laboratory low-noise ventilation system is in actual use, vibration generated during operation of the ventilation fan is buffered through matching of the buffering mounting part and the mounting box, noise is reduced, and the outer frame of the ventilation fan is directly connected with the inner wall of the air draft cover, so that the whole vibration of the air draft cover driven by the ventilation fan can be avoided, and through the design of the noise shielding cover, when partial noise sound waves are spread and broadcast along the inner wall of the induced draft cover, most of noise is counteracted by the blocking of the noise shielding cover, so that the overall noise of the system is reduced to the minimum, and the influence on the experiment is reduced.
Preferably, the buffering installed part includes hollow air bag, the equal fixedly connected with hard board in hollow air bag's both sides, and one of them hard board and the frame fixed connection of ventilating fan keep away from the inside at the mounting box of a hard board block installation of ventilating fan one side to avoid ventilating fan frame and induced air cover direct contact, and utilize hollow air bag's connection and support, effectively cushion the vibrations of ventilating fan and offset, the production and the propagation of noise abatement.
Preferably, the hollow air bag is fixedly connected with elastic protrusions on the outer wall of the hard plate far away from one side of the ventilating fan and the inner wall of the mounting box, and the two groups of elastic protrusions are in mutual contact, so that effective buffering can be achieved between the hard plate and the mounting box.
Preferably, the inner edge of noise separation cover extends to the inner chamber top of induced air cover, forms the cover body opposite with induced air cover bottom opening direction, and the noise separates the cover and chooses sound-proof material for use, for example rubber spare, foam spare etc. and then when partial noise sound wave spreads along the outer diffusion of induced air cover inner wall, it can produce the resilience to separate the cover department at the noise to separate the cover through the noise and offset most noise, thereby can make the whole noise of system fall to minimumly, reduce the influence to the experiment.
Preferably, a plurality of sets of reverse extension plates are fixedly connected to the inner wall of the noise shielding cover, the outer edges of the reverse extension plates and the inner edges of the noise shielding cover extend in opposite directions, and therefore when noise sound waves are reflected on the inner wall of the noise shielding cover, more noise can be further consumed, and the low noise effect of the device is further improved.
Preferably, the dilatation cover is made for the flexibility, for example adopts rubber boot or flexible gas tightness cloth cover, installs the bracing piece around the bottom of dilatation cover, and the bracing piece embedding is made in the inside of dilatation cover, and the outer wall of induced air cover is connected with the dilatation cover through movable support, and then makes the size and the height-adjustable of dilatation cover to when facing appointed experimental facilities, can be located experimental facilities with dilatation cover removal cover on, carry out high efficiency gas collection.
Preferably, the movable support comprises a plurality of groups of connecting rods, two adjacent connecting rods of each group are rotatably connected through a rotating connector, the rotating connector can select a common damping type rotating connector in the market, the two connecting rods at the first end and the last end of each group are respectively rotatably connected with the induced draft cover and the supporting rod through the rotating connector, and the supporting rods can be supported by the structures of the connecting rods to be lifted and opened and closed, so that the height of the containing cover can be adjusted, the opening size of the containing cover can be adjusted, and the inventiveness and the functionality of the system are further improved.
In the technical scheme, the invention provides the following technical effects and advantages:
1. according to the invention, the mounting box is arranged in the air draft cover and is butted with the buffer mounting part, so that the outer frame of the ventilating fan can be prevented from being directly contacted with the air draft cover while the ventilating fan is supported, and the vibration generated during the operation of the ventilating fan is buffered by utilizing the connection of the hollow air bag, so that the generation of noise is reduced;
2. according to the invention, through the design of the noise shielding cover, the upward turning of the inner edge of the noise shielding cover and the further blocking of the reverse extension plate are utilized, when part of noise sound waves are spread and broadcast along the inner wall of the induced draft cover, the noise shielding cover can rebound, and most of noise is offset through the noise shielding cover and the reverse extension plate, so that the integral noise of the system can be reduced to the minimum, and the influence on the experiment is reduced;
3. the support rod is supported by the movable support, the expansion cover is adjusted, the support rod can be lifted and opened and closed by the movement of the connecting rods, the height of the expansion cover can be adjusted, the size of the opening of the 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 technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a state diagram of the present invention.
FIG. 3 is a schematic view showing the connection distribution of the support rods and the expansion caps according to the present invention.
FIG. 4 is an enlarged view of the bumper mount of the present invention.
Description of reference numerals:
1. an induced draft cover; 11. a ventilation duct; 12. mounting a box; 2. a ventilating fan; 3. a cushioning mount; 31. a hollow air bag; 32. a hard plate; 33. an elastic bulge; 4. a noise shield cover; 41. a reverse extension plate; 5. a capacitance expansion cover; 51. a support bar; 6. a movable support; 61. a connecting rod; 62. the connector is rotated.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Examples
The invention provides a low-noise ventilation system for a laboratory as shown in figures 1-4, which comprises an induced air cover 1, wherein the top of the induced air cover 1 is connected with a ventilation pipeline 11, the induced air cover 1 is arranged in a laboratory, the ventilation pipeline 11 communicates the induced air cover 1 with the external periphery of the laboratory, a ventilation fan 2 is arranged in the induced air cover 1, the ventilation fan 2 conveys the air in the laboratory to the external periphery when in work, the inner wall of the induced air cover 1 is fixedly connected with a mounting box 12, a buffer mounting part 3 is arranged on the outer frame of the ventilation fan 2, the buffer mounting part 3 is arranged in the ventilation fan 2 and supports the ventilation fan 2, a noise baffle cover 4 is fixedly arranged at the bottom of the inner wall of the induced air cover 1, a containing cover 5 is connected at the bottom of the outer wall of the induced air cover 1, and the vibration generated when the ventilation fan 2 runs is buffered through the matching of the buffer mounting part 3 and the mounting box 12 when in actual use, the production of noise is reduced, and because the frame of ventilating fan 2 be with the inner wall lug connection of induced air cover 1, can avoid ventilating fan 2 to drive the whole vibrations of induced air cover 1, and through the design of noise baffle cover 4, when partial noise sound wave along the outer diffusion broadcast of induced air cover 1 inner wall, utilize the noise to separate the stopping of baffle cover 4 and offset most noise, thereby can make the whole noise of system fall to minimumly, reduce the influence to the experiment.
Further, in above-mentioned technical scheme, buffering installed part 3 includes hollow gasbag 31, the equal fixedly connected with hard board 32 in both sides of hollow gasbag 31, one of them hard board 32 and 2 outer frame fixed connection of ventilating fan, keep away from 2 inside of installing 12 of one side of ventilating fan's hard board 32 block, thereby avoid 2 outer frames of ventilating fan and induced air cover 1 direct contact, and utilize hollow gasbag 31's connection and support, effectively cushion and offset the vibrations of ventilating fan 2, the production and the propagation of noise reduction.
Furthermore, in the above technical solution, the outer wall of the hard plate 32 on the side of the hollow air bag 31 far from the ventilating fan 2 and the inner wall of the mounting box 12 are both fixedly connected with the elastic protrusions 33, and the two sets of elastic protrusions 33 are in contact with each other, so that the hard plate 32 and the mounting box 12 can be effectively buffered.
Further, in the above technical scheme, the inner edge of the noise shielding cover 4 extends to the upper side of the inner cavity of the induced air cover 1, so as to form a cover body opposite to the opening direction at the bottom of the induced air cover 1, and the noise shielding cover 4 is made of sound insulation materials, such as rubber pieces and foam pieces, so that when part of noise sound waves are spread and broadcast along the inner wall of the induced air cover 1, the noise shielding cover 4 can rebound, and most of noise is offset by the noise shielding cover 4, so that the overall noise of the system can be reduced to the minimum, and the influence on the experiment is reduced.
Furthermore, in the above technical solution, a plurality of sets of reverse extension plates 41 are fixedly connected to the inner wall of the noise shielding cover 4, and the outer edges of the reverse extension plates 41 are opposite to the extension direction of the inner edge of the noise shielding cover 4, so that when noise sound waves are reflected on the inner wall of the noise shielding cover 4, more noise can be further consumed, and the low noise effect of the device is further improved.
Further, in above-mentioned technical scheme, dilatation cover 5 is made for the flexibility, for example adopt rubber boot or flexible gas tightness cloth cover, install bracing piece 51 around the bottom of dilatation cover 5, bracing piece 51 imbeds and makes up in the inside of dilatation cover 5, the outer wall of induced air cover 1 is connected with dilatation cover 5 through movable support 6, and then makes the size and the height-adjustable of dilatation cover 5, thereby when facing appointed experimental facilities, can be located experimental facilities with dilatation cover 5 removal cover, carry out high efficiency gas collection.
Further, in the above technical solution, the movable support 6 includes a plurality of sets of connecting rods 61, two adjacent connecting rods 61 in each set are rotatably connected through a rotating connector 62, the rotating connector 62 can be a common damping rotating connector in the market, two connecting rods 61 at the first and last ends in each set are rotatably connected with the induced draft housing 1 and the supporting rod 51 through the rotating connector 62, and the supporting rod 51 can be adjusted to be lifted and opened and closed by using the structural support of the plurality of connecting rods 61, so that the height of the expansion housing 5 can be adjusted, the size of the opening of the expansion housing 5 can be adjusted, and the inventiveness and functionality of the system can be further improved.
The working principle is as follows: the installation box 12 is arranged in the induced draft cover 1 and is butted with the buffering installation part 3, namely, when the ventilation fan 2 is supported, the direct contact between the outer frame of the ventilation fan 2 and the induced draft cover 1 can be avoided, the vibration generated when the ventilation fan 2 runs is buffered by utilizing the connection of the hollow air bag 31, the generation of noise is reduced, and through the design of the noise shielding cover 4, the upturning of the inner edge of the noise shielding cover 4 and the further blocking of the reverse extension plate 41 are utilized, when partial noise sound waves are spread and broadcast along the inner wall of the induced draft cover 1, the rebounding can be generated at the noise shielding cover 4, and most of the noise is counteracted by the noise shielding cover 4 and the reverse extension plate 41, so that the whole noise of the system can be reduced to the minimum, the influence on the experiment is reduced, the support rod 51 is supported by arranging the movable bracket 6, the expansion cover 5 is adjusted, and the movement of the plurality of the connecting rods 61 is utilized, the support rod 51 can be adjusted to be lifted, opened and closed, the height of the expansion cover 5 can be adjusted, the size of the opening of the expansion cover 5 can be adjusted, and the inventiveness and functionality of the system are further improved.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
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), install in the laboratory induced air cover (1), the inside of induced air cover (1) is provided with ventilating fan (2), its characterized in that: inner wall fixedly connected with mounting box (12) of induced air cover (1), install buffering installed part (3) on the frame of ventilating fan (2), the inside at ventilating fan (2) is installed in buffering installed part (3) to support ventilating fan (2), the bottom fixed mounting of induced air cover (1) inner wall has noise to separate fender cover (4), the bottom of induced air cover (1) outer wall is connected with expansion cover (5).
2. A laboratory low noise ventilation system according to claim 1, wherein: the buffer mounting piece (3) comprises a hollow air bag (31), hard plates (32) are fixedly connected to the two sides of the hollow air bag (31), one of the hard plates (32) is fixedly connected with an outer frame of the ventilating fan (2), and one hard plate (32) far away from one side of the ventilating fan (2) is clamped and mounted inside the mounting box (12).
3. A laboratory low noise ventilation system according to claim 2, wherein: elastic bulges (33) are fixedly connected to the outer wall of the 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 mounting box (12), and the two groups of elastic bulges (33) are in mutual contact.
4. A laboratory low noise ventilation system according to claim 1, wherein: the inner edge of the noise shielding cover (4) extends to the upper part of the inner cavity of the induced draft cover (1) to form a cover body opposite to the opening direction of the bottom of the induced draft cover (1).
5. A laboratory low noise ventilation system according to claim 4, wherein: the noise shielding cover is characterized in that a plurality of groups of reverse extension plates (41) are fixedly connected to the inner wall of the noise shielding cover (4), and the extending directions of the outer edges of the reverse extension plates (41) and the inner edge of the noise shielding cover (4) are opposite.
6. A laboratory low noise ventilation system according to claim 1, wherein: the volume expansion cover (5) is flexible, for example, a rubber cover or a flexible air-tight cloth cover is adopted, a support rod (51) is installed around the bottom of the volume expansion cover (5), the support rod (51) is embedded and sewn in the volume expansion cover (5), and the outer wall of the air inducing cover (1) is connected with the volume expansion cover (5) through a movable support (6).
7. A laboratory low noise ventilation system according to claim 6, wherein: the movable support (6) comprises a plurality of groups of connecting rods (61), every group of connecting rods (61) are connected in a rotating mode through rotating connectors (62), and every group of connecting rods (61) located at the first end and the last end of each connecting rod is connected with the induced draft cover (1) and the supporting rod (51) in a rotating mode through rotating connectors (62).
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 true CN114888027A (en) | 2022-08-12 |
| CN114888027B CN114888027B (en) | 2023-11-14 |
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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 |
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| Country | Link |
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| 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 |
|---|---|
| CN114888027B (en) | 2023-11-14 |
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