Electrical control box assembly for a biological safety cabinet and a biological safety cabinet

Abstract

The application relates to the technical field of biological safety cabinets, and discloses an electric control box assembly for a biological safety cabinet, which comprises an electric control box arranged at the upper portion of the front end of a containing cavity in the cabinet body of the biological safety cabinet, the electric control box is recessed towards the rear end of the cabinet body to form a mounting space, and the front portion of the electric control box is open so that other electric control elements can be mounted in the mounting space; a front panel is arranged at the front of the electric control box to shield the front opening of the electric control box; wherein the front panel and the electric control box are sequentially mounted on the cabinet body, and the end surface of the front panel is flush with the front end surface of the cabinet body to avoid head collision of a user. The electric control box is recessed, so that the front protruding size of the upper portion of the front end of the cabinet body can be effectively reduced, and head collision of a user to the upper portion of the front end of the cabinet body is avoided. The application further discloses a biological safety cabinet.

Description

Technical Field

[0001] This application relates to the field of biosafety cabinet technology, for example to an electrical control box assembly for a biosafety cabinet and a biosafety cabinet. Background Technology

[0002] A biosafety cabinet (BSC), also known as a biological or microbiological safety cabinet, is a completely enclosed, ventilated laboratory workspace designed to protect personnel, the laboratory environment, the external environment, and experimental samples from exposure to aerosols and splashes that may be generated during the handling or testing of infectious microorganisms. It is used to safely handle contaminated (or potentially contaminated) pathogens and requires materials with a defined biosafety level. Several different types of biosafety cabinets exist (i.e., Class I, Class II, or Class III), distinguished from each other by the required level of bioprotection. The primary purpose of a biosafety cabinet is to serve as a primary means of protecting laboratory personnel and the surrounding environment from pathogens.

[0003] The working principle of a biosafety cabinet is primarily to draw air outwards, maintaining a negative pressure state inside the cabinet, and using vertical airflow to protect personnel. Outside air enters the cabinet after being filtered through a high-efficiency particulate air filter (HEPA filter) to prevent sample contamination. The air inside the cabinet also needs to be filtered through a HEPA filter before being released into the atmosphere to protect the environment. Generally, biosafety cabinets are equipped with high-efficiency HEPA or ULPA filters or higher, which intercept airborne dust particles larger than 0.3µm, achieving a filtration efficiency of ≥99.995% to ensure the cleanliness of the operating area. After contaminated air enters the air duct system, approximately 70% of the airflow is recirculated, and approximately 30% is filtered before being discharged into the environment. This type of standard biosafety cabinet can meet the needs of most routine laboratory work.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] In related technologies, the electrical control components of biosafety cabinets are located at the top front of the cabinet, resulting in a large forward protrusion that could easily hit the user's head and cause danger. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides an electrical control box assembly for a biosafety cabinet and a biosafety cabinet to address the problem that the electrical control box of a biosafety cabinet can easily hit the user's head, causing danger.

[0008] An embodiment of the first aspect of this application provides an electrical control box assembly for a biosafety cabinet, comprising: an electrical control box disposed at the upper front end of a receiving cavity within the biosafety cabinet body, the electrical control box being recessed towards the rear end of the cabinet body to form an installation space, and the electrical control box having an opening at the front to facilitate the installation of other electrical control components within the installation space; and a front panel disposed in front of the electrical control box to cover the front opening of the electrical control box; wherein the front panel and the electrical control box are sequentially installed on the cabinet body, and the end face of the front panel is flush with the front face of the cabinet body to prevent the user from bumping their head.

[0009] In some alternative embodiments, the electrical control box assembly for the biosafety cabinet further includes: an elastic clamping member disposed on the front end face of the cabinet body, one end of the elastic clamping member being fixedly connected to the front end face of the cabinet body, and the other end of the elastic clamping member being bent and extended multiple times to clamp the object to be clamped; wherein, when there is no object to be clamped between the upper part of the elastic clamping member and the front end face, it can contact the front end face.

[0010] In some alternative embodiments, the elastic clamping member is arranged vertically, and a notch is provided at the connection between the front panel and the front cover corresponding to the position of the elastic clamping member, so that the front panel can be clamped by the elastic clamping member.

[0011] In some alternative embodiments, the distance between the upper end of the elastic clamp and the front face of the cabinet is greater than the distance between the lower end of the elastic clamp and the front face of the cabinet, so that the connection of the front panel can move downward along the upper end of the elastic clamp to clamp the front panel.

[0012] In some alternative embodiments, the edge of the electrical control box is provided with a first flange, which extends in a direction away from the installation space; the receiving cavity of the cabinet is provided with a second flange adapted to the first flange, which extends in a direction towards the installation space; both the first flange and the second flange are provided with connecting holes so that bolts and nuts can be used to connect the electrical control box and the cabinet.

[0013] In some alternative embodiments, the first flange is a U-shaped flange, which includes a first folded edge and a second folded edge. The first folded edge extends away from the installation space at the edge of the electrical control box, and the second folded edge is bent toward the installation space.

[0014] In some alternative embodiments, the electrical control box assembly for the biosafety cabinet further includes a motor fixing component disposed within the electrical control box. The motor fixing component includes a fixing part and a mounting part. The fixing part is used for fixed connection with the electrical control box, and the mounting part has a groove so that the motor shaft of the motor is engaged in the groove.

[0015] In some alternative embodiments, the groove includes a first recess and a second recess, the first recess communicating with the second recess, and the first recess being inclined relative to the second recess to prevent the motor shaft from falling out of the groove.

[0016] In some alternative embodiments, the opening area of ​​the first recess is larger than the opening area of ​​the second recess, so as to facilitate the mounting of the motor shaft in the groove.

[0017] An embodiment of the second aspect of this application provides a biosafety cabinet, the biosafety cabinet comprising: a cabinet body having an internal cavity; and an electrical control box assembly for the biosafety cabinet as described in any of the optional embodiments above, disposed at the upper part of the front end of the cavity and detachably connected to the cabinet body.

[0018] The electrical control box assembly and biosafety cabinet provided in this disclosure can achieve the following technical effects:

[0019] By setting up an electrical control box and making it protrude backward to create an installation space, other electrical control components can be installed within this space. By setting a front panel and sequentially mounting the control box and front panel onto the cabinet, the front panel can cover the front opening of the control box, preventing external dust or other impurities from falling inside and ensuring a clean internal environment. This avoids the problem of internal component malfunction due to excessive dust. Furthermore, this embodiment avoids a situation where the upper part of the front of the cabinet protrudes significantly relative to the lower part due to the installation of electrical control components, which could lead to users bumping their heads while operating the biosafety cabinet. By recessing the control box, the forward protrusion of the upper part of the cabinet is effectively reduced, preventing users from bumping their heads or allowing them to operate the cabinet without having to insert their heads inside, making it easier for users to observe the operation inside the cabinet from the front.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is an exploded structural diagram of an electrical control box assembly for a biosafety cabinet provided in an embodiment of this disclosure;

[0023] Figure 2 This is a cross-sectional schematic diagram of an electrical control box assembly for a biosafety cabinet provided in an embodiment of this disclosure;

[0024] Figure 3 This is provided by the embodiments of this disclosure. Figure 1 A magnified view of part A in the middle;

[0025] Figure 4 This is an exploded structural diagram of another electrical control box assembly for a biosafety cabinet provided in this embodiment of the present disclosure;

[0026] Figure 5 This is a schematic diagram of the structure of an electrical control box provided in an embodiment of this disclosure;

[0027] Figure 6 This is a cross-sectional schematic diagram of a biosafety cabinet provided in an embodiment of this disclosure;

[0028] Figure 7 This is a schematic diagram of the structure of a motor fixing component provided in an embodiment of this disclosure.

[0029] Figure label:

[0030] 10: Cabinet body; 101: Receiving cavity; 102: Second flange.

[0031] 20: Electrical control box; 201: Installation space; 202: First flange; 2021: First folded edge; 2022: Second folded edge; 203: Connecting hole; 21: Elastic clamping element; 22: Motor fixing element; 221: Fixing part; 2211: First fixing plate; 2212: Second fixing plate; 222: Mounting part; 2221: Groove; 2222: First recess; 2223: Second recess; 23: Wire guide ring.

[0032] 30: Front panel; 311: Notch. Detailed Implementation

[0033] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0034] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0035] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0036] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0037] Unless otherwise stated, the term "multiple" means two or more.

[0038] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0039] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0041] Combination Figure 1-7As shown, this disclosure provides an electrical control box assembly for a biosafety cabinet. The electrical control box assembly for a biosafety cabinet includes an electrical control box 20 and a front panel 30. The electrical control box 20 is located at the upper front end of the receiving cavity 101 within the cabinet body 10 of the biosafety cabinet. The electrical control box 20 is recessed towards the rear end of the cabinet body 10 to form an installation space 201. The front part of the electrical control box 20 is open to facilitate the installation of other electrical control components within the installation space 201. The front panel 30 is located in front of the electrical control box 20 to cover the front opening of the electrical control box 20. The front panel 30 and the electrical control box 20 are sequentially installed on the cabinet body 10. The end face of the front panel 30 is flush with the front end face of the cabinet body 10 to prevent the user from bumping their head.

[0042] The end face of the front panel 30 is flush with the front face of the cabinet 10, including two cases: the end face of the front panel 30 is completely flush with the front face of the cabinet 10 and the end face of the front panel 30 is approximately flush with the front face of the cabinet 10.

[0043] The end face of the front panel 30 can be completely flush with the front face of the cabinet 10, that is, the planes containing the front panel 30 and the front face of the cabinet 10 are in the same plane. For example, the front panel 30 is a flat plate structure, and the edge of the front opening of the receiving cavity 101 of the cabinet 10 is provided with a structure suitable for connecting with the front panel 30. The front panel 30 is connected to the front opening of the receiving cavity 101 so that the front face of the front panel 30 is flush with the front face of the cabinet 10, which can prevent the user's head from hitting the front panel 30 during operation.

[0044] Combination Figure 2 As shown, the end face of the front panel 30 can also slightly protrude from the front face of the cabinet 10. It can be understood that the distance between the end face of the front panel 30 and the front face of the cabinet 10 depends on the thickness of the front panel 30 in the front-rear direction. The fact that the front face of the front panel 30 slightly protrudes from the front face of the cabinet 10 means that the front panel 30 has a smaller thickness, which minimizes the distance between the front face of the front panel 30 and the front face of the cabinet 10, thus preventing users from bumping their heads.

[0045] The electrical control box 20 assembly for a biosafety cabinet provided in this embodiment allows for the installation of other electrical control components within the installation space 201 by setting the electrical control box 20 and making it protrude rearward to form an installation space 201. This effectively utilizes the space within the cabinet 10 and shifts the center of gravity of the electrical control box 20 rearward, preventing the cabinet 10 from tipping over due to excessive weight of the mounting parts 222 inside the electrical control box 20. By setting a front panel 30 and sequentially mounting the electrical control box 20 and the front panel 30 onto the cabinet 10, the front panel 30 can cover the front opening of the electrical control box 20, preventing external dust or other impurities from falling into the electrical control box 20. This ensures a clean internal environment and prevents malfunctions of internal components due to excessive dust. Furthermore, this embodiment can avoid the situation where the upper part of the front end of the cabinet 10 protrudes significantly relative to the lower part of the front end of the cabinet 10 due to the installation of electrical control components, which could lead to the user bumping their head during the operation of the biosafety cabinet. By setting the electrical control box 20 to be recessed, the forward protrusion distance of the upper part of the cabinet 10 can be effectively reduced, preventing the user from bumping their head or allowing the user to operate without putting their head into the cabinet 10, making it easier for the user to stand in front of the cabinet 10 and observe the operation inside the cabinet 10.

[0046] Optionally, the electrical control box 20 is located at the upper front of the receiving cavity 101 inside the cabinet 10 of the biosafety cabinet and is detachably connected to the cabinet 10. The front opening of the electrical control box 20 facilitates the inspection and maintenance of the internal components of the electrical control box 20 and the disassembly of the electrical control box 20. The front panel 30 is located in front of the electrical control box 20 to cover the front opening of the electrical control box 20 and is detachably connected to the cabinet 10. The front panel 30 and the electrical control box 20 are installed sequentially on the cabinet 10 to facilitate the disassembly of the front panel 30 for inspection and maintenance of the components inside the electrical control box 20.

[0047] In this way, by placing the electrical control box 20 at the upper front of the receiving cavity 101 and detachably connecting the electrical control box 20 to the cabinet 10, that is, by vertically placing the electrical control box 20 at the front of the cabinet 10, compared to placing the electrical control box 20 horizontally inside the cabinet 10, the components inside the electrical control box 20 can be inspected without removing the electrical control box 20. This facilitates the user's maintenance and replacement of the electrical control box 20's components. In addition, it is also convenient for the user to disassemble the electrical control box 20 as a whole and move it to a larger space for operation. With the front panel 30 detachably connected, the user can remove only the front panel 30 to inspect the operating status of the internal components through the opening of the electrical control box 20. Based on the actual problem, it can be determined whether the electrical control box 20 needs to be removed from the cabinet 10. Compared with the traditional setting method, this can effectively reduce the workload of the user in maintaining the electrical control box 20.

[0048] Optionally, the detachable connection can be made by means of slots and clips, or by means of bolts and nuts. It is understood that the detachable connection methods include, but are not limited to, connection by means of slots and clips and connection by means of bolts and nuts.

[0049] Optionally, the electrical control box 20 includes a back plate, a top plate, a bottom plate, a first side plate, and a second side plate, which together enclose an installation space 201.

[0050] Optionally, the front panel 30 has a three-dimensional structure, the interior of the front panel 30 is hollow, and openings are provided on the rear end face and the bottom end face of the front panel 30. A side is provided at the edge of the rear end face of the front panel 30, and the side is used to connect with the front end face of the cabinet 10.

[0051] In this way, by setting the front panel 30 as a hollow three-dimensional structure, other components can be placed in the cavity of the front panel 30, increasing the accommodation space of the electrical control box 20.

[0052] In some alternative embodiments, the electrical control box assembly for the biosafety cabinet further includes: an elastic clamping member 21, which is disposed on the front end face of the cabinet body 10. One end of the elastic clamping member 21 is fixedly connected to the front end face of the cabinet body 10, and the other end of the elastic clamping member 21 is bent and extended multiple times to clamp the object to be clamped. The upper part of the elastic clamping member 21 can contact the front end face when there is no object to be clamped.

[0053] Using the electrical control box assembly for a biosafety cabinet provided in this embodiment, by setting up an elastic clamping member 21, when the front panel 30 and the cabinet body 10 are connected, a portion of the front panel 30 is located between the other end of the elastic clamping member 21 and the front end face of the cabinet body 10. The front panel 30 is fixed to the front end of the cabinet body 10 by the force exerted on the front panel 30 by the elastic clamping member 21 and the frictional force generated between the front panel 30 and the cabinet body 10.

[0054] Combination Figure 3 As shown, the elastic clamping member 21 includes a first end and a second end. The first end is fixedly connected to the cabinet 10 in a vertical direction. The second end includes a first connecting plate, a second connecting plate and a third connecting plate. The first connecting plate, the second connecting plate and the third connecting plate are connected in sequence. The first connecting plate extends in a direction away from the cabinet 10, the second connecting plate extends in a direction toward the cabinet 10, and the third connecting plate extends in a direction away from the cabinet 10. The connection between the second connecting plate and the third connecting plate is in contact with the cabinet 10.

[0055] In another embodiment, the elastic clamping member 21 includes a first end and a second end. The first end is fixedly connected to the cabinet 10 in a vertical direction. The second end includes a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are connected in sequence. The first connecting plate extends in a direction away from the cabinet 10, and the second connecting plate extends in a direction toward the cabinet 10. The end of the second connecting plate facing the cabinet 10 contacts the cabinet 10.

[0056] In another embodiment, the elastic clamping member 21 includes a first end and a second end. The first end is fixedly connected to the cabinet 10 vertically, and the second end includes a first connecting plate, a second connecting plate, a third connecting plate, a fourth connecting plate, and a fifth connecting plate. The first connecting plate, the second connecting plate, the third connecting plate, the fourth connecting plate, and the fifth connecting plate are connected in sequence. The first connecting plate extends away from the cabinet 10, the second connecting plate extends towards the cabinet 10, and the third connecting plate extends away from the cabinet 10. The connection between the second connecting plate and the third connecting plate is in contact with the cabinet 10. The fourth connecting plate and the second connecting plate are set in the same direction, and the fifth connecting plate and the third connecting plate are set in the same way.

[0057] It is understood that the number of connecting plates at the second end of the elastic clamping member 21 is not unique. As long as it can clamp and fix the front panel 30 to the cabinet 10, it is one of the optional implementation forms of this application.

[0058] In one embodiment, there are two elastic clamping members 21, which are arranged vertically and symmetrically distributed on the top of the front face of the cabinet 10 about the central axis of the front face of the cabinet 10.

[0059] In yet another embodiment, combined with Figure 1 As shown, there are four elastic clamping members 21. The elastic clamping members 21 are symmetrically distributed on both sides of the front face of the cabinet 10 along the vertical central axis about the front face of the cabinet 10.

[0060] It is understood that the number and location of the elastic clamping members 21 are not unique. Any arrangement that can clamp and fix the front panel 30 to the front end of the cabinet 10 is one of the optional implementation methods of this application.

[0061] In some alternative embodiments, the elastic clamping member 21 is arranged vertically, and a notch 311 is provided at the connection between the front panel 30 and the front end face of the cabinet 10 corresponding to the position of the elastic clamping member 21, so that the front panel 30 can be clamped by the elastic clamping member 21.

[0062] The electrical control box assembly for a biosafety cabinet provided in this embodiment of the invention features a notch 311 on the front panel 30 corresponding to the elastic clamping member 21, which, in conjunction with... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the diagram, the side of the rear end face of the front panel 30 has a notch 311 corresponding to the elastic clamping member. In this way, when installing and fixing the front panel 30, the notch 311 can be installed corresponding to the elastic clamping member 21. When the rear end face of the front panel 30 contacts the front end face of the cabinet 10, the front panel 30 falls naturally, and the upper part of the elastic clamping member 21 can clamp the upper part of the notch 311, thus fixing the front panel 30 to the front side of the cabinet 10.

[0063] Optionally, the length of the notch 311 is greater than or equal to the length of the elastic clamp 21.

[0064] In this way, during the installation of the front panel 30, the notch 311 of the front panel 30 can be directly aligned with the elastic clamping member 21, while the front panel 30 moves toward the front end of the cabinet 10. When the rear end of the front panel 30 contacts the front end of the cabinet 10, the front panel 30 is moved downwards directly, so that the top of the notch 311 of the front panel 30 slides into the upper end of the elastic clamping member 21, thus fixing the front panel 30 to the front side of the cabinet 10.

[0065] In some alternative embodiments, the distance between the upper end of the elastic clamping member 21 and the front end face of the cabinet 10 is greater than the distance between the lower end of the elastic clamping member 21 and the front end face of the cabinet 10, so that the connection of the front panel 30 can move downward along the upper end of the elastic clamping member 21 to clamp the front panel 30.

[0066] The distance between the upper end of the elastic clamping member 21 and the front end face of the cabinet 10 is greater than the distance between the lower end of the elastic clamping member 21 and the front end face of the cabinet 10. Figure 2 , Figure 3 and Figure 4 As shown, since the lower end of the elastic clamping member 21 is fixedly connected to the front end face of the cabinet 10, that is, there is a gap between the upper end of the elastic clamping member 21 and the front end face of the cabinet 10.

[0067] Using the electrical control box assembly for a biosafety cabinet provided in this embodiment, by creating a gap between the upper end of the elastic clamp 21 and the cabinet body 10, the side panel of the front panel 30 can move downward along the gap. The side panel can be fixed between the elastic clamp 21 and the front end face of the cabinet body 10, which facilitates the user to install and fix the front panel 30.

[0068] In some alternative embodiments, the electrical control box 20 is recessed in the direction away from the front panel 30 to form an installation space 201. The edges of the electrical control box 20 are provided with first flanges 202, which extend in the direction away from the installation space 201. The cabinet 10 is provided with second flanges 102 that are adapted to the first flanges 202, which extend in the direction towards the installation space 201. The first flanges 202 and the second flanges 102 are provided with connecting holes 203 so that bolts and nuts can be used to connect the electrical control box 20 and the cabinet 10.

[0069] The electrical control box assembly for biosafety cabinets provided in this disclosure, by setting a first flange 202 and a second flange 102, can ensure that the user can easily fix the electrical control box 20 and the cabinet body 10.

[0070] In some alternative embodiments, the first flange 202 is a U-shaped flange, which includes a first folded edge 2021 and a second folded edge 2022. The first folded edge 2021 extends away from the installation space 201 at the edge of the electrical control box 20, and the second folded edge 2022 bends toward the installation space 201.

[0071] By using the electrical control box assembly for a biosafety cabinet provided in this embodiment, the structural strength of the first flange 202 can be enhanced by setting the first flange 202 as a U-shaped flange, thereby effectively strengthening the connection stability between the electrical control box 20 and the cabinet 10, and avoiding the situation where the electrical control box 20 and the cabinet 10 are disconnected due to the excessive weight of the components installed inside the electrical control box 20.

[0072] In some alternative embodiments, the electrical control box assembly for the biosafety cabinet further includes a motor fixing member 22, which is disposed inside the electrical control box 20. The motor fixing member 22 includes a fixing part and a mounting part 222. The fixing part is used to fix and connect to the electrical control box 20, and the mounting part 222 has a groove 2221 so that the motor shaft is engaged in the groove 2221.

[0073] Combination Figure 6 As shown, there are two motor mounting members 22, which are correspondingly disposed on the side wall of the electrical control box 20, so that the two ends of the motor shaft are respectively engaged in the grooves 2221 of the two motor mounting members 22. The grooves 2221 can be formed in the upper part of the mounting part 222 or in the front part of the mounting part 222. It can be understood that the setting position of the grooves 2221 is not unique.

[0074] Using the electrical control box assembly for biosafety cabinets provided in this disclosure, combined with Figure 6 and Figure 7As shown, by setting the motor fixing part 22, the motor shaft of the motor can be fixed in the groove 2221 of the motor fixing part 22 by snap-fit, which makes it easy for users to install and disassemble the motor, thereby achieving rapid splicing and installation.

[0075] Optionally, combined Figure 7 As shown, the fixing part 221 includes a first fixing plate 2211 and a first fixing plate 2212. One end of the first fixing plate 2211 is connected to the lower end of the mounting part 222, and the other end is fixedly connected to the side plate of the electrical control box 20. One end of the first fixing plate 2212 is connected to the back of the mounting part 222, and the other end is connected to the back plate of the electrical control box 20.

[0076] In this way, by setting the first fixing plate 2211 and the first fixing plate 2212, the connection strength between the motor fixing component 22 and the electrical control box 20 can be effectively strengthened, ensuring the connection stability of the motor fixing component 22; the motor will generate a certain vibration during operation, and by setting the first fixing plate 2211 and the first fixing plate 2212, the vibration can be transmitted to the electrical control box 20 in two directions, which can effectively reduce the vibration of the electrical control box 20.

[0077] In some alternative embodiments, the groove 2221 includes a first recess 2222 and a second recess 2223, the first recess 2222 and the second recess 2223 are in communication, and the first recess 2222 is inclined relative to the second recess 2223 to prevent the motor shaft from falling out of the groove 2221.

[0078] Using the electrical control box assembly for biosafety cabinets provided in this disclosure, combined with Figure 7 As shown, the groove 2221 includes an upper first recess 2222 and a lower second recess 2223. The first recess 2222 and the second recess 2223 are connected. The first recess 2222 is inclined relative to the second recess 2223, meaning that the sidewalls forming the first recess 2222 and the second recess 2223 are not on the same straight line. Thus, when the motor is installed and fixed, the motor shaft can be inserted from the first recess 2222 and slide along the sidewall of the first recess 2222 into the second recess 2223, where the second recess 2223 engages the motor shaft. During motor operation, the motor shaft vibrates. By providing the first recess 2222 and the second recess 2223, and because the first recess 2222 is inclined, the motor shaft is blocked by the sidewall of the first recess 2222 when moving upwards. This prevents the motor shaft from falling out of the groove 2221 due to excessive vibration.

[0079] In some alternative embodiments, the opening area of ​​the first recess 2222 is larger than the opening area of ​​the second recess 2223, so that the motor shaft can slide from the first recess 2222 into the second recess 2223.

[0080] By using the electrical control box assembly for a biosafety cabinet provided in this embodiment, and by making the opening area of ​​the first recess 2222 larger than the opening area of ​​the second recess 2223, the user can easily insert the motor shaft from the opening of the first recess 2222 and slide it into the second recess 2223 along the side of the first recess 2222, thereby fixing the motor shaft.

[0081] Optionally, the electrical control box assembly for the biosafety cabinet also includes: a wire guide ring 23, which passes through the back panel of the electrical control box 20 and has a wire hole in the middle to ensure the sealing of the installation space 201 of the electrical control box 20.

[0082] For example, in combination Figure 5 As shown, the wire guide ring 23 has a frustum structure and a wire hole is provided in the middle of the wire guide ring 23. The diameter of the wire hole gradually decreases along the direction away from the electrical control box 20, and the size of the wire hole is just matched with the size of the wire to ensure the sealing of the installation space 201 of the electrical control box 20.

[0083] In this way, by setting the wire protection ring 23, it is ensured that the wires of the components inside the electrical control box 20 can be electrically connected to the components at the rear of the electrical control box 20 through the wire protection ring 23, and harmful airflow is prevented from flowing into the electrical control box 20 through the wire hole, thereby ensuring the sealing of the installation space 201 of the electrical control box 20.

[0084] Combination Figure 6 As shown, this embodiment of the present disclosure provides a biosafety cabinet, including: a cabinet body 10 and an electrical control box assembly for a biosafety cabinet according to any of the above embodiments. The cabinet body 10 has a receiving cavity 101 formed inside. The electrical control box assembly for a biosafety cabinet according to any of the above embodiments is disposed at the upper part of the front end of the receiving cavity 101 and is detachably connected to the cabinet body 10.

[0085] The biosafety cabinet provided in this embodiment includes the electrical control box assembly for biosafety cabinets from any of the above embodiments, and therefore has all the beneficial effects of the electrical control box assembly for biosafety cabinets from any of the above embodiments, which will not be repeated here.

[0086] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An electrical control box assembly for a biosafety cabinet, characterized in that, include: An electrical control box (20) is located at the upper front end of the receiving cavity (101) inside the cabinet (10) of the biosafety cabinet. The electrical control box (20) is recessed towards the rear end of the cabinet (10) to form an installation space (201). The front of the electrical control box (20) is open to allow other electrical control components to be installed in the installation space (201). A first flange (202) is provided at the edge of the electrical control box (20). The first flange (202) extends in a direction away from the installation space (201). The receiving cavity (101) of the cabinet (10) is provided with a second flange (102) that is adapted to the first flange (202). The second flange (102) extends in a direction towards the installation space (201). Both the first flange (202) and the second flange (102) are provided with connection holes (203). A front panel (30) is provided in front of the electrical control box (20) to cover the front opening of the electrical control box (20); An elastic clamping member (21) is provided on the front end face of the cabinet (10). One end of the elastic clamping member (21) is fixedly connected to the front end face of the cabinet (10). The other end of the elastic clamping member (21) is bent and extended multiple times to clamp the object to be clamped. When there is no object to be clamped between the upper part of the elastic clamping member (21) and the front end face, it can contact the front end face. A notch is provided on the front panel corresponding to the position of the elastic clamping member. The front panel (30) is clamped by the elastic clamping member (21). The elastic clamping member includes a first end and a second end. The first end is fixedly connected to the cabinet in a vertical direction. The second end includes a first connecting plate, a second connecting plate and a third connecting plate. The first connecting plate, the second connecting plate and the third connecting plate are connected in sequence. The first connecting plate extends in a direction away from the cabinet, the second connecting plate extends in a direction toward the cabinet, and the third connecting plate extends in a direction away from the cabinet. The connection between the second connecting plate and the third connecting plate is in contact with the cabinet. The front panel and the electrical control box are installed sequentially on the cabinet. The end face of the front panel (30) is flush with the front face of the cabinet (10) to avoid the user bumping their head. When the front panel and the cabinet are connected, part of the front panel is located between the other end of the elastic clamp and the front face of the cabinet. The front panel is fixed to the front face of the cabinet by the force exerted on the front panel by the elastic clamp and the friction between the front panel and the cabinet.

2. The electrical control box assembly for a biosafety cabinet according to claim 1, characterized in that, The elastic clamp (21) is arranged vertically, and a notch (311) is provided at the connection between the front panel (30) and the front end face of the cabinet (10) corresponding to the position of the elastic clamp (21).

3. The electrical control box assembly for a biosafety cabinet according to claim 2, characterized in that, The distance between the upper end of the elastic clamp (21) and the front end face of the cabinet (10) is greater than the distance between the lower end of the elastic clamp (21) and the front end face of the cabinet (10), so that the connection of the front panel (30) can move downward along the upper end of the elastic clamp (21) so that the elastic clamp (21) clamps the front panel (30).

4. The electrical control box assembly for a biosafety cabinet according to claim 1, characterized in that, Bolts and nuts connect the electrical control box (20) to the cabinet (10) through the connecting hole (203).

5. The electrical control box assembly for a biosafety cabinet according to claim 4, characterized in that, The first flange (202) is a U-shaped flange, which includes a first fold (2021) and a second fold (2022). The first fold (2021) extends away from the installation space (201) at the edge of the electrical control box (20), and the second fold (2022) bends toward the installation space (201).

6. The electrical control box assembly for a biosafety cabinet according to any one of claims 1 to 5, characterized in that, Also includes: The motor fixing component (22) is located inside the electrical control box (20). The motor fixing component (22) includes a fixing part (221) and a mounting part (222). The fixing part (221) is used to fix and connect to the electrical control box (20). The mounting part (222) has a groove (2221) so that the motor shaft is engaged in the groove (2221).

7. The electrical control box assembly for a biosafety cabinet according to claim 6, characterized in that, The groove (2221) includes a first recess (2222) and a second recess (2223), the first recess (2222) and the second recess (2223) are connected, and the first recess (2222) is inclined relative to the second recess (2223) to prevent the motor shaft from falling out of the groove (2221).

8. The electrical control box assembly for a biosafety cabinet according to claim 7, characterized in that, The opening area of ​​the first recess (2222) is larger than the opening area of ​​the second recess (2223) so that the motor shaft can be installed in the groove (2221).

9. A biosafety cabinet, characterized in that, include: The cabinet (10) has an internal cavity (101). The electrical control box assembly for a biosafety cabinet as described in any one of claims 1 to 8 is located at the upper part of the front end of the receiving cavity (101) and is detachably connected to the cabinet body (10).

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