CN215540966U - Biological safety cabinet - Google Patents
Biological safety cabinet Download PDFInfo
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- CN215540966U CN215540966U CN202121101709.2U CN202121101709U CN215540966U CN 215540966 U CN215540966 U CN 215540966U CN 202121101709 U CN202121101709 U CN 202121101709U CN 215540966 U CN215540966 U CN 215540966U
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- cavity
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Abstract
The utility model discloses a biological safety cabinet.A working cavity is formed in a cabinet body, an air supply cavity and an air exhaust cavity are arranged at the top of the working cavity, an air return cavity is arranged at the back of the working cavity and communicated with the working cavity, the air return cavity is communicated with the working cavity and the air exhaust cavity, a first sound absorption module is arranged at the top of the air supply cavity, and a second sound absorption module is arranged in the air return cavity close to the side of the working cavity. Inhale the sound that the sound module realized biological safety cabinet through first sound module and the second and inhale the sound and fall the noise, improve and use experience.
Description
Technical Field
The utility model relates to the technical field of biological safety cabinets, in particular to a biological safety cabinet with noise reduction and shock absorption functions.
Background
The biological safety cabinet consists of an air supply and exhaust fan, an air supply and exhaust bellows and an air supply and exhaust filter, and the working principle of the biological safety cabinet is mainly that air in the cabinet is exhausted after being filtered, a negative pressure state is maintained, and then an operator is protected by downdraft; air enters the safety cabinet after being filtered by the air filter, so that the sample is prevented from being polluted; the air flow passing through the working area is filtered by a filter and then discharged to the indoor or the atmosphere, so as to protect the environment.
Because the reasons such as the internal air current of cabinet flows, the production of vortex and fan operation vibration lead to the biosafety cabinet can produce the noise when the operation, contain the noise of high frequency, the abnormal sound that the fan vibration produced etc. in this noise, influence the user and use experience.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems pointed out in the background art, the utility model provides a biological safety cabinet with noise reduction and shock absorption functions.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
the utility model provides a biological safety cabinet, comprising:
the cabinet body is internally provided with a working cavity, the top of the working cavity is provided with an air supply cavity and an air exhaust cavity, the back of the working cavity is provided with an air return cavity, the air supply cavity is communicated with the working cavity, and the air return cavity is communicated with the working cavity and the air exhaust cavity;
the first sound absorption module is arranged at the top of the air supply cavity;
and the second sound absorption module is arranged in the air return cavity and close to the working cavity side.
In some embodiments of the present application, first sound absorption module includes sound absorption portion I and sound absorption portion II, sound absorption portion I is located on the interior roof plane in air supply chamber, sound absorption portion II is located on the interior roof inclined plane in air supply chamber.
In some embodiments of the present application, the sound absorbing part i and the sound absorbing part ii are in seamless contact at the butt joint position.
In some embodiments of this application, the second is inhaled the sound module and is included a plurality of sound absorbing parts III and sound absorbing part IV, and is a plurality of sound absorbing part III is located the return air intracavity is close to the position department that the working chamber side leaned on, sound absorbing part IV is located the return air intracavity is close to the position department that the working chamber side leaned on down.
In some embodiments of the present application, the thickness of the sound absorbing portion iii increases from bottom to top and then decreases.
In some embodiments of the present application, a molded line of the sound absorbing portion iii away from the working cavity side is an arc line or is composed of multiple segments of lines.
In some embodiments of the present application, the thickness of the sound absorbing portion iv increases from bottom to top, and the thickness of the top of the sound absorbing portion iv is not greater than the thickness of the bottom of the sound absorbing portion iii.
In some embodiments of the present application, the first sound absorbing module and the second sound absorbing module are sound absorbing cotton or micro perforated plates.
In some embodiments of the present application, a fan and a support are arranged in the air supply cavity, and the fan is connected with the support through a rubber bolt.
In some embodiments of the present application, a groove is disposed at a middle position of the bracket, and the rubber bolt is disposed in the groove.
Compared with the prior art, the utility model has the advantages and positive effects that:
in the biological safety cabinet disclosed in the application, the top in air supply chamber is the low velocity of flow district of air current, hugs closely the roof setting in air supply chamber with first sound module of inhaling, when realizing inhaling the sound and making an uproar, has still played the effect of optimizing air supply intracavity flow field homogeneity.
One side that is close to the working chamber in the return air intracavity is flow field vortex blind spot, inhales the sound module with the second and locates the return air intracavity and be close to the working chamber side, when realizing inhaling the sound and falling the noise, can not influence the mainstream flow in the return air intracavity, does not influence the return air effect, and is little to the whole quick-witted air performance.
This biological safety cabinet inhales the sound module through setting up in air supply chamber and return air intracavity, realizes making an uproar function of falling, and the while rationally sets up the mounted position who inhales the sound module, avoids influencing the complete machine flow field, can also compromise the flow field homogeneity simultaneously.
Other features and advantages of the present invention will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a biosafety cabinet according to an embodiment;
FIG. 2 is a schematic view of a flow field in a return air cavity according to an embodiment;
fig. 3 is a schematic view of a connection structure of the blower and the bracket according to the embodiment.
Reference numerals:
100-a cabinet body;
110-a working chamber;
120-air supply cavity, 121-fan, 122-bracket, 1221-groove, 123-air supply filter, 124-air guide ring and 125-rubber bolt;
130-an exhaust cavity, 131-an exhaust fan and 132-an exhaust filter;
140-a return air chamber;
200-a first sound absorption module;
210-a sound absorption part I;
220-sound absorption part II;
300-a second sound absorbing module;
310-sound absorption part III, 311-profile;
320-sound absorbing part IV;
a-eddy dead zone in the air return cavity.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
The present embodiment discloses a biosafety cabinet, referring to fig. 1, which includes a cabinet body 100, and in order to clearly show the internal structure of the cabinet body 100, the cabinet body 100 is processed in a perspective manner in fig. 1.
A working chamber 110 with an open front side is formed in the cabinet 100, an air supply chamber 120 and an air exhaust chamber 130 are arranged at the top of the working chamber 110, the air supply chamber 120 is located at the lower part of the air exhaust chamber 130, and an air return chamber 140 is arranged at the back of the working chamber 110. The air supply chamber 120 communicates with the working chamber 110, and an air supply fan 121 in the air supply chamber 120 blows an air flow to the working chamber 110 through an air supply filter 123. The air return cavity 140 is communicated with the working cavity 110 and the exhaust cavity 130, and the air flow in the working cavity 110 enters the exhaust cavity 130 through the air return cavity 140 and is exhausted through the exhaust filter 132 under the action of the exhaust fan 131.
The biosafety cabinet further comprises a first sound absorbing module 200 and a second sound absorbing module 300.
The first sound absorption module 200 is arranged at the top of the air supply cavity 120, and the second sound absorption module 300 is arranged in the return air cavity 140 and close to the working cavity 110.
The top of the air supply cavity 120 is a low flow velocity area of air flow, and the first sound absorption module 200 is arranged close to the top wall of the air supply cavity 120, so that the effect of optimizing the uniformity of a flow field in the air supply cavity 120 is achieved while sound absorption and noise reduction are achieved.
Fig. 2 is a schematic view of a gas flow field in the return air cavity 140, and it can be seen from the figure that one side of the return air cavity 140 close to the working cavity 110 is a flow field vortex dead zone, which is marked as a, and the second sound-absorbing module 300 is arranged in the return air cavity 140 close to the working cavity 110, so that when sound absorption and noise reduction are realized, main flow in the return air cavity 140 is not influenced, the return air effect is not influenced, and the influence on the air performance of the whole machine is small.
Biological safety cabinet in this application inhales the sound module through setting up in supply air chamber 120 and return air chamber 140, realizes making an uproar function of falling, and the while rationally sets up the mounted position who inhales the sound module, avoids influencing the complete machine flow field, can also compromise the flow field homogeneity simultaneously.
In some embodiments of the present application, referring to fig. 1, the first sound absorption module 200 includes a sound absorption part i 210 and a sound absorption part ii 220, the sound absorption part i 210 is disposed on an inner top wall plane of the air supply cavity 120, and the sound absorption part ii 220 is disposed on an inner top wall inclined plane of the air supply cavity 120.
The split type structure of I210 of sound absorption portion and II 220 of sound absorption portion is convenient for install on the one hand, and on the other hand can guarantee that first sound absorption module 200 covers the interior roof in air supply chamber 120 as far as possible, increases and inhales the sound active area, improves and inhales the sound noise reduction effect.
The butt joint position of the sound absorption part I210 and the sound absorption part II 220 is in seamless contact, so that the sound absorption and noise reduction effect and the flow field uniformity are prevented from being influenced by the occurrence of gaps.
In some embodiments of the present application, with continued reference to fig. 1, the second sound absorbing module 300 includes a plurality of sound absorbing portions iii 310 and a plurality of sound absorbing portions iv 320, the plurality of sound absorbing portions iii 310 are disposed in the return air chamber 140 at a position close to the upper side of the working chamber 110, and the plurality of sound absorbing portions iv 320 are disposed in the return air chamber 140 at a position close to the lower side of the working chamber 110.
The split type structure of the sound absorption part III 310 and the sound absorption part IV 320 is convenient to install on one hand, and on the other hand, the adverse effect on a flow field is reduced by reasonably setting the installation positions of the sound absorption part III 310 and the sound absorption part IV 320 and combining the flow field distribution in the air return cavity 140.
The thickness of the sound absorbing part III 310 is increased from bottom to top and then reduced, and as can be seen from fig. 2, the main flow area in the return air cavity 140 is in a shape that the upper end and the lower end are wide and the middle is narrow, so that the sound absorbing part III 310 is designed into a structure that the two ends are narrow and the middle is thick so as to be adapted to the flow field distribution of the main flow area, and the adverse effect of the sound absorbing part III 310 on the main flow area in the return air cavity 140 is reduced.
The molded line 311 of the sound absorbing part III 310 far away from the working cavity 110 can be an arc line or be composed of multiple segments, so that the airflow resistance is low, and the flow channel wind pressure loss is reduced.
The thickness of the sound absorption part IV 320 is increased from bottom to top, and the sound absorption part IV 320 is also used for adapting to the flow field distribution of the main flow area in the return air cavity 140, so that the adverse effect of the sound absorption part IV 320 on the main flow area in the return air cavity 140 is reduced.
The thickness of the top of the sound absorption part IV 320 is not more than that of the bottom of the sound absorption part III 310, and the airflow resistance is reduced.
In some embodiments of the present application, the first sound absorption module 200 and the second sound absorption module 300 may be a sound absorption cotton or a micro-perforated plate, and have good sound absorption and noise reduction effects and are convenient to install.
In some embodiments of the present application, referring to fig. 1 and 3, a blower 121 and a bracket 122 are disposed in the air supply cavity 120, and the blower 121 is fixedly connected to the bracket 122 through a rubber bolt 125.
Most of the vibration energy generated by the fan 121 during operation is absorbed by the rubber bolts 125 to reduce the vibration of the fan 121 transmitted to the bracket 122 and the cabinet 100, so as to reduce the vibration energy and the radiation noise of the bracket 122 and the cabinet 100.
The middle position of the bracket 122 is provided with a groove 1221, and the rubber bolt 125 is arranged in the groove 1221, so that the sizes of the fan blade and the air guide ring 124 after the fan 121 is installed can meet the installation requirement.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A biosafety cabinet comprising:
the cabinet body is internally provided with a working cavity, the top of the working cavity is provided with an air supply cavity and an air exhaust cavity, the back of the working cavity is provided with an air return cavity, the air supply cavity is communicated with the working cavity, and the air return cavity is communicated with the working cavity and the air exhaust cavity;
it is characterized by also comprising:
the first sound absorption module is arranged at the top of the air supply cavity;
and the second sound absorption module is arranged in the air return cavity and close to the working cavity side.
2. The biosafety cabinet according to claim 1,
the first sound absorption module comprises a sound absorption part I and a sound absorption part II, the sound absorption part I is arranged on the plane of the inner top wall of the air supply cavity, and the sound absorption part II is arranged on the inclined plane of the inner top wall of the air supply cavity.
3. The biosafety cabinet according to claim 2,
and the butt joint position of the sound absorbing part I and the sound absorbing part II is in seamless contact.
4. The biosafety cabinet according to claim 1,
the second inhales the sound module and includes a plurality of sound absorbing parts III and sound absorbing part IV, and is a plurality of sound absorbing part III is located the return air intracavity is close to the position department that the working chamber side leaned on, sound absorbing part IV is located the return air intracavity is close to the position department that the working chamber side leaned on down.
5. The biosafety cabinet according to claim 4,
the thickness of the sound absorption part III is increased from bottom to top and then reduced.
6. The biosafety cabinet according to claim 5,
the molded line of the sound absorption part III far away from the working cavity side is an arc line or consists of multiple sections of lines.
7. The biosafety cabinet according to claim 5,
the thickness of the sound absorption part IV is increased from bottom to top, and the thickness of the top of the sound absorption part IV is not larger than that of the bottom of the sound absorption part III.
8. The biosafety cabinet according to any of claims 1 to 7,
the first sound absorption module and the second sound absorption module are sound absorption cotton or micro-perforated plates.
9. The biosafety cabinet according to any of claims 1 to 7,
and a fan and a support are arranged in the air supply cavity, and the fan is connected with the support through a rubber bolt.
10. The biosafety cabinet according to claim 9,
the middle position department of support is equipped with the recess, rubber bolt locates in the recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121101709.2U CN215540966U (en) | 2021-05-21 | 2021-05-21 | Biological safety cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121101709.2U CN215540966U (en) | 2021-05-21 | 2021-05-21 | Biological safety cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215540966U true CN215540966U (en) | 2022-01-18 |
Family
ID=79862875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121101709.2U Active CN215540966U (en) | 2021-05-21 | 2021-05-21 | Biological safety cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215540966U (en) |
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2021
- 2021-05-21 CN CN202121101709.2U patent/CN215540966U/en active Active
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