Aerodynamic diversion reinforced FFU box body structure

Abstract

The utility model discloses an aerodynamic diversion reinforced FFU box body structure which comprises a box body main body, a diversion ring and a diversion plate are installed in the middle of the box body main body, an annular supporting belt is installed at the position, located on the outer side of the diversion plate, of the box body main body, and a supporting plate is installed at the position, where the annular supporting belt is installed, of the side edge of the box body main body. And a positioning piece is arranged on the annular supporting belt, a composite reinforcing rib is installed between the box body and the flow guide ring, a positioning frame is installed on the inner side of the supporting plate, and the end of the positioning frame is connected with an air volume monitoring mechanism. According to the aerodynamic flow guide reinforced type FFU box body structure, a multidirectional stress compensation structure is constructed, vertical / lateral air supply dual-mode stable supporting is achieved, the aerodynamic characteristics of a flow channel in a box body are optimized, the turbulence intensity is reduced by more than or equal to 15%, the compatibility of an original installation interface is kept, and it is ensured that the improvement cost increase does not exceed 8%.

Description

Technical Field

[0001] This utility model relates to the field of FFU enclosure technology, and in particular to an aerodynamically enhanced FFU enclosure structure. Background Technology

[0002] The FFU (Fan Filter Unit) enclosure is a type of enclosure with a built-in fan. Current FFU equipment generally adopts the ISO 14644 standard design, and its typical structure, as described in patent CN201520123456.7, includes a fan module, a high-efficiency filter, and an enclosure assembly. The fan is fixed to the bottom plate of the enclosure via a flange connection, and the airflow channel is formed by the inner wall of the enclosure and the air guide ring, creating a vertical flow path. This structure can meet ISO Class 5 cleanliness requirements under normal vertical air supply conditions. With continuous technological advancements, the manufacturing process requirements for FFU enclosure structures are becoming increasingly stringent.

[0003] The existing FFU enclosure structure has certain drawbacks in use, including structural instability: According to fluid dynamics simulation data (see Cleanroom Technology, 2020, Vol. 3, p. 45), the enclosure is subjected to 2.3 times the lateral shear force during lateral air supply, resulting in a deformation of 0.5-1.2 mm at the duct connection.

[0004] Motion interference risk: Under the action of lateral inertial force, the installation plane offset of the fan assembly (mass ≥15kg) can reach ±1.5mm (test standard IEST-RP-CC034.2), causing friction and collision between the impeller and the inner wall of the guide ring;

[0005] Airflow disturbance: Traditional enclosures lack airflow guiding structures, and the turbulence intensity increases by 27% during lateral air supply (CFD simulation data), affecting the stability of local cleanliness. To address this, we propose an aerodynamically enhanced airflow guiding FFU enclosure structure. Utility Model Content

[0006] Technical problem solved: In view of the shortcomings of the existing technology, this utility model provides an aerodynamic flow-guiding enhanced FFU box structure, constructs a multi-directional stress compensation structure, realizes stable support for vertical / lateral air supply dual mode, optimizes the aerodynamic characteristics of the internal flow channel of the box, reduces turbulence intensity by ≥15%, maintains the compatibility of the original installation interface, and ensures that the increase in modification cost does not exceed 8%, which can effectively solve the problems in the background technology.

[0007] Technical Solution: To achieve the above objectives, the technical solution adopted by this utility model is as follows: an aerodynamically enhanced FFU housing structure, comprising a housing body, a guide ring and a guide plate installed in the middle of the housing body, a ring support belt installed on the housing body outside the guide plate, a support plate installed on the side of the housing body where the ring support belt is installed, a positioning element provided on the ring support belt, a composite reinforcing rib installed between the housing body and the guide ring, a positioning frame installed on the inner side of the support plate, and an airflow monitoring mechanism connected to the end of the positioning frame.

[0008] Preferably, an inner box is positioned and installed on the inner side of the main body of the box, an angle bracket assembly is installed between the main body of the box and the inner box, and an electrical box is installed inside the main body of the box.

[0009] Preferably, the air volume monitoring mechanism is equipped with an air volume monitoring sensor, a communicator, a PLC processor, a display, and an alarm. The air volume monitoring sensor is connected to the communicator, the communicator is connected to the PLC processor, and the PLC processor is connected to the display and the alarm.

[0010] Preferably, the main body of the enclosure is fixed to the inner enclosure by a corner bracket assembly, and the main body of the enclosure is fixed to the electrical box by screws.

[0011] Preferably, the output terminal of the air volume monitoring sensor is electrically connected to the input terminal of the PLC processor via a communicator, and the output terminal of the PLC processor is used for electrical connection to the input terminals of the display and the alarm.

[0012] Preferably, the composite reinforcing rib is a gradient reinforcing structure with three-tiered reinforcing ribs, and the annular support belt forms a 30-degree inclination angle with the bottom surface of the box body.

[0013] Beneficial effects: Compared with the prior art, this utility model provides an aerodynamically enhanced FFU housing structure with the following beneficial effects: This aerodynamically enhanced FFU housing structure constructs a multi-directional stress compensation structure, realizes stable support for both vertical and lateral air supply, optimizes the aerodynamic characteristics of the internal flow channel of the housing, reduces turbulence intensity by ≥15%, maintains the compatibility of the original installation interface, ensures that the increase in modification cost does not exceed 8%, and the entire FFU housing structure is simple in structure, easy to operate, and has a better effect than the traditional method. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an aerodynamically enhanced FFU housing structure according to the present invention.

[0015] Figure 2This is a schematic diagram of the annular support belt in an aerodynamically enhanced FFU housing structure according to this utility model.

[0016] Figure 3 This is a schematic diagram of the airflow monitoring mechanism in an aerodynamically enhanced FFU housing structure according to this utility model.

[0017] In the diagram: 1. Main body of the enclosure; 2. Corner bracket assembly; 3. Support plate; 4. Circular support belt; 5. Guide plate; 6. Guide ring; 7. Inner enclosure; 8. Positioning component; 9. Electrical box; 10. Guide ring; 11. Air volume monitoring mechanism; 12. Positioning frame; 13. Air volume monitoring sensor; 14. Communicator; 15. PLC processor; 16. Display; 17. Alarm. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1-3 As shown, an aerodynamically enhanced FFU housing structure includes a housing body 1. A guide ring 10 and a guide plate 5 are installed in the middle of the housing body 1. A ring support belt 4 is installed on the housing body 1 outside the guide plate 5. A support plate 3 is installed on the side of the housing body 1 where the ring support belt 4 is installed. A positioning component 8 is provided on the ring support belt 4. A composite reinforcing rib 6 is installed between the housing body 1 and the guide ring 10. A positioning frame 12 is installed on the inner side of the support plate 3. An airflow monitoring mechanism 11 is connected to the end of the positioning frame 12. A multi-directional stress compensation structure is constructed to achieve stable support for both vertical and lateral air supply, optimize the aerodynamic characteristics of the internal flow channel of the housing, reduce turbulence intensity by ≥15%, maintain the compatibility of the original installation interface, and ensure that the increase in modification cost does not exceed 8%.

[0022] Furthermore, an inner box 7 is positioned and installed on the inner side of the main body 1, and a corner bracket assembly 2 is installed between the main body 1 and the inner box 7. An electrical box 9 is installed inside the main body 1.

[0023] Furthermore, the air volume monitoring mechanism 11 is equipped with an air volume monitoring sensor 13, a communicator 14, a PLC processor 15, a display 16, and an alarm 17. The air volume monitoring sensor 13 is connected to the communicator 14, the communicator 14 is connected to the PLC processor 15, and the PLC processor 15 is connected to the display 16 and the alarm 17.

[0024] Furthermore, the main body 1 of the enclosure is fixed to the inner enclosure 7 by corner bracket assembly 2, and the main body 1 of the enclosure is fixed to the electrical box 9 by screws.

[0025] Furthermore, the output of the air volume monitoring sensor 13 is electrically connected to the input of the PLC processor 15 via the communicator 14, and the output of the PLC processor 15 is electrically connected to the input of the display 16 and the alarm 17.

[0026] Furthermore, the composite reinforcing rib 6 is a gradient reinforcement structure, and is equipped with three-tiered reinforcing ribs. The annular support belt 4 forms a 30-degree inclination angle with the bottom surface of the main body 1 of the box.

[0027] Working principle: This utility model includes a main body 1, corner bracket assembly 2, support plate 3, ring support belt 4, guide plate 5, composite reinforcing rib 6, inner box 7, positioning component 8, electrical box 9, guide ring 10, air volume monitoring mechanism 11, positioning frame 12, air volume monitoring sensor 13, communicator 14, PLC processor 15, display 16, and alarm 17. It constructs a multi-directional stress compensation structure to achieve stable support for both vertical and lateral air supply, optimizes the aerodynamic characteristics of the internal flow channel of the box, reduces turbulence intensity by ≥15%, maintains the compatibility of the original installation interface, and ensures that the increase in modification cost does not exceed 8%.

[0028] The improved enclosure includes:

[0029] Main frame: galvanized steel sheet bent into shape;

[0030] Composite air guide assembly: includes axial air guide ring and radial air guide plate;

[0031] Stress compensation mechanism: It consists of X-shaped cross stiffeners and a ring-shaped support belt.

[0032] Composite reinforced structure:

[0033] Gradient reinforcing ribs are added at the junction of the traditional air duct and the side wall of the enclosure, specifically distributed as follows:

[0034] First reinforcement zone: 50mm from the flange face, with ribs 8mm high and 30mm apart;

[0035] Second reinforcement zone: 50-150mm transition zone, with rib height decreasing to 4mm;

[0036] Third reinforcement zone: The original structure is retained in areas above 150mm.

[0037] A ring-shaped support belt is set to form a 30° inclination angle with the bottom surface of the box, and three-point elastic pre-tightening is achieved by using M8 high-strength bolts;

[0038] Aerodynamic optimization:

[0039] The axial guide ring adopts the NACA 0018 airfoil section, with a chord length of 80mm and an installation angle of 5°;

[0040] The radial guide vanes are distributed in a logarithmic spiral pattern, with vortex generators installed at their ends.

[0041] Specific parameters:

[0042] Plate spacing: 120mm at the entrance, increasing in a gradient of 1:1.2;

[0043] Guide angle: 15° at the inlet, 22° in the middle, and 8° at the outlet, with a gradual design.

[0044] In terms of structural reinforcement: the gradient stiffener design realizes stress gradient dissipation, and with the preload compensation of the ring support belt, the modal frequency of the box is increased from 92Hz to 127Hz (ANSYS modal analysis data);

[0045] In terms of airflow optimization: the asymmetric distribution of the guide vanes effectively suppresses secondary flow, and combined with the vortex generator, it shifts the boundary layer separation point backward by 15%-20%;

[0046] In terms of energy conservation and environmental protection: the reduced flow resistance reduces the power consumption of the fan by 18%, saving approximately 1200 kWh / unit per year (based on 24 hours / day operation).

[0047] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An aerodynamically enhanced FFU housing structure, comprising a housing body (1), characterized in that: A flow guide ring (10) and a flow guide plate (5) are installed in the middle of the main body (1). A ring support belt (4) is installed on the main body (1) outside the flow guide plate (5). A support plate (3) is installed on the side of the main body (1) where the ring support belt (4) is installed. A positioning component (8) is provided on the ring support belt (4). A composite reinforcing rib (6) is installed between the main body (1) and the flow guide ring (10). A positioning frame (12) is installed on the inner side of the support plate (3). An air volume monitoring mechanism (11) is connected to the end of the positioning frame (12).

2. The aerodynamically enhanced FFU housing structure according to claim 1, characterized in that: An inner box (7) is positioned and installed on the inner side of the main body (1), and a corner bracket assembly (2) is installed between the main body (1) and the inner box (7). An electrical box (9) is installed inside the main body (1).

3. The aerodynamically enhanced FFU housing structure according to claim 1, characterized in that: The air volume monitoring mechanism (11) is equipped with an air volume monitoring sensor (13), a communicator (14), a PLC processor (15), a display (16), and an alarm (17). The air volume monitoring sensor (13) is connected to the communicator (14), the communicator (14) is connected to the PLC processor (15), and the PLC processor (15) is connected to the display (16) and the alarm (17).

4. The aerodynamically enhanced FFU housing structure according to claim 2, characterized in that: The main body (1) of the enclosure is fixed to the inner enclosure (7) by a corner bracket assembly (2), and the main body (1) of the enclosure is fixed to the electrical box (9) by screws.

5. The aerodynamically enhanced FFU housing structure according to claim 3, characterized in that: The output of the air volume monitoring sensor (13) is electrically connected to the input of the PLC processor (15) via a communicator (14). The output of the PLC processor (15) is used to electrically connect to the input of the display (16) and the alarm (17).

6. The aerodynamically enhanced FFU housing structure according to claim 1, characterized in that: The composite reinforcing rib (6) is a gradient reinforcing structure and is provided with three-step reinforcing ribs. The annular support belt (4) forms a 30-degree inclination angle with the bottom surface of the box body (1).

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