An air circulation structure inside a biological safety cabinet

Abstract

The utility model relates to a biological safety cabinet technical field, concretely relates to a biological safety cabinet internal wind circulation structure, include: wind circulation part, set up at the safety cabinet cabinet body top wind circulation cavity department, including the top bracket and bottom bracket of up and down parallelly arranged, bottom bracket with top bracket on respectively install a plurality of circulating fan, this biological safety cabinet internal wind circulation structure, can form independent wind circulation in wind circulation cavity through the wind circulation part that is equipped with, and can improve the distribution uniformity of airflow based on the distribution structure of circulating fan, simultaneously, this wind circulation structure can keep wind circulation protection performance, and it is convenient for compression reduces the cabinet body space height, can improve the passability of biological safety cabinet in turn.

Description

Technical Field

[0001] This utility model relates to the field of biosafety cabinet technology, specifically to an internal air circulation structure for a biosafety cabinet. Background Technology

[0002] Biosafety cabinets are indispensable core equipment in fields such as biological experiments and medical testing. Their main function is to provide reliable safety protection for operators, experimental samples, and the experimental environment. They achieve air purification and directional flow through an efficient air circulation system to prevent the spread of harmful microparticles.

[0003] Currently, most mainstream biosafety cabinets on the market adopt a single-sided fan intake structure in their air circulation system design. This single-sided fan intake structure results in a relatively simple air circulation path and insufficient uniformity of airflow distribution within the cabinet. Furthermore, the redundant space design exacerbates the problem of poor maneuverability due to the cabinet's height. If the cabinet height is reduced, the side fan circulation channel will be compressed, thereby reducing the airflow and safety protection performance of the equipment.

[0004] Therefore, ensuring the core protective performance of biosafety cabinets, optimizing the spatial layout of the air circulation system, and thereby reducing the overall height of the cabinet to meet the spatial adaptability of the equipment are necessary for practical applications; in view of this, we propose an internal air circulation structure for biosafety cabinets. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings mentioned in the background art and provide an internal air circulation structure for a biosafety cabinet.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An internal air circulation structure for a biosafety cabinet includes: The air circulation section is located at the air circulation cavity at the top of the safety cabinet, and includes a top bracket and a bottom bracket arranged parallel to each other. Multiple circulating fans are installed on the bottom bracket and the top bracket, respectively.

[0007] Preferably, multiple circulating fans are connected in parallel with an external power supply to provide independent air circulation.

[0008] Preferably, the plurality of circulating fans are arranged in a spatially staggered, interlocking tooth-like distribution between the bottom bracket and the top bracket.

[0009] Preferably, the safety cabinet includes two side frames that are fixedly installed from top to bottom, consisting of a top frame, a middle crossbeam, and a bottom frame; The safety cabinet has a working chamber located below the intermediate crossbeam, and the air circulation chamber is located above the intermediate crossbeam.

[0010] Preferably, the bottom bracket and the top bracket are detachably installed above the intermediate crossbeam and below the top bracket, respectively.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The internal air circulation structure of this biosafety cabinet can form an independent air circulation within the air circulation chamber through the provided air circulation section, and the distribution structure of the circulating fan can improve the uniformity of airflow distribution; at the same time, this air circulation structure can maintain the air circulation protection performance, facilitate the compression and reduction of the cabinet's height, and thus improve the biosafety cabinet's accessibility. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the air circulation section of this utility model; Figure 4 This is a front view of the air circulation section of this utility model.

[0013] The meanings of the labels in the diagram are as follows: 1. Safety cabinet body; 11. Side frame; 12. Top frame; 13. Base frame; 14. Intermediate crossbeam frame; 101. Working chamber; 102. Air circulation chamber; 2. Air circulation section; 21. Bottom bracket; 22. Top bracket; 23. Circulating fan. Detailed Implementation

[0014] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Please see Figures 1-4 The present invention will describe the above technical solution in detail through the following embodiments: In this embodiment, the internal air circulation structure of the biosafety cabinet takes into account that the existing single-sided circulation fan affects the flowability when compressed. Therefore, this embodiment creatively installs an air circulation section 2 at the air circulation cavity 102 at the top of the biosafety cabinet body 1.

[0016] like Figures 2-4 As shown in the structure, the safety cabinet body 1 includes two side frames 11 that are fixedly installed from top to bottom, namely a top frame 12, a middle crossbeam frame 14, and a bottom frame 13. An air circulation chamber 102 and a working chamber 101 are formed on the upper side below the middle crossbeam frame 14, respectively. The air circulation part 2 includes a bottom bracket 21 and a top bracket 22 that are detachably installed above the middle crossbeam frame 14 and below the top frame 12, respectively, to facilitate maintenance and disassembly operations.

[0017] like Figure 2 The structure shown has two sets of circulating fans 23 installed on the top bracket 22 and bottom bracket 21, which are arranged in parallel. Each set of circulating fans 23 is spatially staggered in a tooth-like manner within the air circulation chamber 102. This improves the air circulation effect while maintaining a constant circulation space, and also maintains reliable air circulation function after the cabinet height is reduced. In this embodiment, the circulating fans 23 are connected to the power supply in parallel, which can provide independent air circulation. This allows each air outlet to form an independent air circulation without interference, improving the utilization rate of the internal space of the cabinet. This facilitates the reduction of the overall height of the cabinet and improves the accessibility of the biosafety cabinet.

[0018] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0019] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. An internal air circulation structure for a biosafety cabinet, characterized in that: include: The air circulation section (2) is located at the air circulation cavity (102) at the top of the cabinet body (1) of the safety cabinet, and includes a top bracket (22) and a bottom bracket (21) arranged in parallel. Multiple circulating fans (23) are respectively installed on the bottom bracket (21) and the top bracket (22). Multiple circulating fans (23) are arranged in a spatially staggered, interlocking tooth-like distribution between the bottom bracket (21) and the top bracket (22).

2. The internal air circulation structure of the biosafety cabinet as described in claim 1, characterized in that: Multiple circulating fans (23) are electrically connected in parallel with an external power supply to provide independent air circulation.

3. The internal air circulation structure of the biosafety cabinet as described in claim 1, characterized in that: The cabinet body (1) includes two side frames (11) which are fixedly installed from top to bottom, including a top frame (12), a middle crossbeam frame (14) and a bottom frame (13). The safety cabinet body (1) is provided with a working chamber (101) located below the intermediate crossbeam frame (14), and the air circulation chamber (102) is located above the intermediate crossbeam frame (14).

4. The internal air circulation structure of the biosafety cabinet as described in claim 3, characterized in that: The bottom bracket (21) and the top bracket (22) are respectively detachably installed above the intermediate crossbeam (14) and below the top bracket (12).

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