Bearing anti-deformation FFU box body bottom plate reinforcing structure

Abstract

The utility model discloses a load-bearing deformation-resistant FFU box body bottom plate reinforcing structure which comprises a main load-bearing plate, airflow guide plates are arranged at the left end and the right end of the main load-bearing plate, auxiliary supporting plates are arranged at the front end and the rear end of the main load-bearing plate, and right-angle folded edges are arranged at the connecting positions of the auxiliary supporting plates and the main load-bearing plate. A honeycomb laminate is arranged at the lower end position of the main bearing plate, the honeycomb laminate is connected with the main bearing plate through an adhesive at the upper end position, and a core body wall is arranged at the inner position of the honeycomb laminate. Dynamic stiffness compensation is achieved, a bidirectional enhancement effect is formed through the coupling effect of reinforcing ribs in specific geometrical shapes and an airflow channel, a vibration suppression mechanism is established, a mechanical impedance sudden change area is arranged on the structural level, and a propagation path of vibration waves is blocked.

Description

Technical Field

[0001] This utility model belongs to the technical field of load-bearing and deformation-resistant FFU box bottom plate reinforcement structure, specifically relating to a load-bearing and deformation-resistant FFU box bottom plate reinforcement structure. Background Technology

[0002] The load-bearing and deformation-resistant FFU enclosure bottom plate reinforcement structure is a special design structure for the FFU enclosure bottom plate. It is usually composed of reinforcing ribs, thickened plates, or special support components. By setting these reinforcing elements on the bottom plate, the load-bearing capacity of the bottom plate can be effectively improved, enabling it to withstand greater weight without deformation. At the same time, this reinforcement structure can also enhance the rigidity and stability of the bottom plate, reduce the risk of deformation caused by external forces or long-term use, and ensure that the FFU enclosure maintains good structural performance during operation, thereby guaranteeing the normal operation and service life of the FFU.

[0003] Currently, FFU enclosures generally adopt the whole-plate stamping forming process disclosed in CN209799198U. The base material is selected from aluminum alloy or galvanized steel plate with a thickness of 0.8-1.2mm. According to laboratory tests and in accordance with the GB / T2423.5-1999 mechanical impact standard, when a centrifugal fan with a diameter of φ400mm or more is installed, the traditional single-layer flat plate structure exhibits plastic deformation of 0.5-1.2mm in the central area after 2000 hours of continuous operation. This deformation will lead to the destruction of air gap uniformity, increased resonance risk, and deterioration of installation flatness. Utility Model Content

[0004] The purpose of this utility model is to provide a load-bearing and deformation-resistant reinforced bottom plate structure for FFU (Fan Filter Unit) enclosures, in order to solve the problem mentioned in the background art that the current FFU enclosures generally adopt the whole-plate stamping process disclosed in CN209799198U, with the base material being 0.8-1.2mm thick aluminum alloy or galvanized steel plate. According to laboratory tests and in accordance with the GB / T 2423.5-1999 mechanical impact standard, when equipped with a centrifugal fan with a diameter of φ400mm or more, the traditional single-layer flat plate structure exhibits 0.5-1.2mm plastic deformation in the central area after 2000 hours of continuous operation. This deformation leads to problems such as damage to air gap uniformity, increased resonance risk, and deterioration of installation flatness.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a load-bearing and deformation-resistant FFU (Fan Filter Unit) box bottom plate reinforcement structure, including a main load-bearing plate, airflow guide plates are provided at the left and right ends of the main load-bearing plate, auxiliary support plates are provided at the front and rear ends of the main load-bearing plate, a right-angle folded edge is provided at the connection between the auxiliary support plate and the main load-bearing plate, a honeycomb layer is provided at the lower end of the main load-bearing plate, the honeycomb layer is connected to the main load-bearing plate by an adhesive at the upper end, and a core wall is provided inside the honeycomb layer.

[0006] Preferably, the upper end of the main load-bearing plate is provided with a through groove at the middle position.

[0007] Preferably, the upper end of the main load-bearing plate has multiple through holes, and the upper end of the main load-bearing plate has side plates located on the left and right sides.

[0008] Preferably, the main load-bearing plate, auxiliary support plate, and airflow guide plate are all made of galvanized coated steel plate.

[0009] Preferably, the auxiliary support plate is fixed at a perpendicular angle to the main load-bearing plate, and a right-angle folded edge is provided at the connection between the auxiliary support plate and the main load-bearing plate.

[0010] Preferably, the length of the honeycomb layer is the same as the length of the main load-bearing plate.

[0011] Preferably, the honeycomb layer is bonded to the lower end of the main load-bearing plate with an adhesive, and the adhesive is made of epoxy resin.

[0012] Preferably, the core wall is made of aluminum alloy and is located on the inner side of the honeycomb layer.

[0013] Compared with the prior art, this utility model provides a load-bearing and deformation-resistant FFU box bottom plate reinforcement structure, which has the following beneficial effects:

[0014] 1. This device constructs a multi-level stress dispersion system. Through a split composite base plate structure, concentrated loads are transformed into distributed loads to achieve dynamic stiffness compensation. The coupling effect of stiffeners with specific geometric shapes and airflow channels forms a bidirectional enhancement effect, establishing a vibration suppression mechanism. Mechanical impedance abrupt change zones are set at the structural level to block the propagation path of vibration waves.

[0015] 2. This device has a honeycomb layer at the lower end of the main load-bearing plate. The honeycomb layer is made of lightweight and high-strength aluminum alloy. The core wall, i.e. the wall of the honeycomb unit, is set inside the honeycomb layer. The thickness of the core wall is relatively thin. This can significantly improve the compressive strength of the structure without adding too much weight. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a load-bearing and deformation-resistant FFU (Fan Filter Unit) box bottom plate reinforcement structure according to the present invention.

[0017] Figure 2 This is a top view schematic diagram of a load-bearing and deformation-resistant FFU box bottom plate reinforcement structure according to the present invention.

[0018] Figure 3 This is a side view schematic diagram of a load-bearing and deformation-resistant FFU box bottom plate reinforcement structure according to the present invention.

[0019] Figure 4 This is a partially enlarged structural diagram of a load-bearing and deformation-resistant FFU (Fan Filter Unit) box bottom plate reinforcement structure according to this utility model.

[0020] In the diagram: 1. Main load-bearing plate; 2. Right-angle folded edge; 3. Auxiliary support plate; 4. Side plate; 5. Through hole; 6. Through groove; 7. Airflow guide plate; 8. Honeycomb layer; 9. Core wall; 10. Adhesive. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0024] The utility model provides, for example Figure 1-4 The load-bearing and deformation-resistant FFU box bottom plate reinforcement structure shown includes a main load-bearing plate 1, airflow guide plates 7 are provided at the left and right ends of the main load-bearing plate 1, auxiliary support plates 3 are provided at the front and rear ends of the main load-bearing plate 1, right-angle folded edges 2 are provided at the connection between the auxiliary support plates 3 and the main load-bearing plate 1, a honeycomb layer plate 8 is provided at the lower end of the main load-bearing plate 1, the honeycomb layer plate 8 is connected to the main load-bearing plate 1 by an adhesive 10 at the upper end, and a core wall 9 is provided inside the honeycomb layer plate 8.

[0025] The connection method uses HSR-5 high-strength rivets to achieve sandwich connection. The rivet points are arranged in a double helix array. The contact surface is coated with LZ-32 damping glue to form a viscoelastic intermediate layer with a thickness of 0.2 mm. The edge is set with a dovetail joint structure, which, together with M6 anti-loosening bolts, achieves secondary fastening and dynamic characteristic improvement.

[0026] like Figure 1 and Figure 2 As shown, the upper end of the main load-bearing plate 1 has a through groove 6 located in the middle position, and multiple through holes 5 are distributed at the upper end of the main load-bearing plate 1. Side plates 4 are provided at the upper end of the main load-bearing plate 1 on the left and right sides. The main load-bearing plate 1, the auxiliary support plate 3, and the airflow guide plate 7 are all made of galvanized coated steel plates. The auxiliary support plate 3 is fixed at a perpendicular angle to the main load-bearing plate 1, and a right-angle folded edge 2 is provided at the connection between the auxiliary support plate 3 and the main load-bearing plate 1. The length of the honeycomb layer plate 8 is the same as the length of the main load-bearing plate 1. The honeycomb layer plate 8 is bonded to the lower end of the main load-bearing plate 1 by adhesive 10. The adhesive 10 is made of epoxy resin. The core wall 9 is made of aluminum alloy and is located on the inner side of the honeycomb layer plate 8.

[0027] A multi-level stress dispersion system is constructed, and a split composite base plate structure is used to transform concentrated loads into distributed loads to achieve dynamic stiffness compensation. The coupling effect of stiffeners with specific geometric shapes and airflow channels forms a bidirectional enhancement effect, establishing a vibration suppression mechanism. A mechanical impedance abrupt change zone is set at the structural level to block the propagation path of vibration waves.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A load-bearing, distortion-resistant FFU cassette bottom plate reinforcement structure, characterized by, The system includes a main load-bearing plate (1), airflow guide plates (7) are provided at the left and right ends of the main load-bearing plate (1), auxiliary support plates (3) are provided at the front and rear ends of the main load-bearing plate (1), right-angle folded edges (2) are provided at the connection between the auxiliary support plates (3) and the main load-bearing plate (1), a honeycomb layer plate (8) is provided at the lower end of the main load-bearing plate (1), the honeycomb layer plate (8) is connected to the main load-bearing plate (1) by an adhesive (10) at the upper end, and a core wall (9) is provided inside the honeycomb layer plate (8).

2. A load-bearing, distortion-resistant FFU cassette bottom plate stiffening structure according to claim 1, characterized in that: The upper end of the main load-bearing plate (1) is provided with a through groove (6) at the middle position.

3. A load-bearing, distortion-resistant FFU cassette bottom panel stiffening structure according to claim 1, characterized in that: The main load-bearing plate (1) has multiple through holes (5) at its upper end, and side plates (4) are provided at the upper end of the main load-bearing plate (1) on the left and right sides.

4. A load-bearing, distortion-resistant FFU cassette bottom panel stiffening structure according to claim 1, characterized in that: The main load-bearing plate (1), auxiliary support plate (3) and airflow guide plate (7) are all made of galvanized coated steel plate.

5. A load-bearing, distortion-resistant FFU cassette bottom panel stiffening structure according to claim 1, characterized in that: The auxiliary support plate (3) is fixed at a perpendicular angle to the main load-bearing plate (1), and a right-angle folded edge (2) is provided at the connection between the auxiliary support plate (3) and the main load-bearing plate (1).

6. A load-bearing, distortion-resistant FFU cassette bottom panel stiffening structure according to claim 1, characterized in that: The length of the honeycomb layer (8) is the same as the length of the main load-bearing plate (1).

7. A load-bearing, distortion-resistant FFU cassette bottom panel stiffening structure according to claim 1, characterized in that: The honeycomb layer (8) is bonded to the lower end of the main load-bearing plate (1) by an adhesive (10), the adhesive (10) being made of epoxy resin.

8. A load-bearing, distortion-resistant FFU cassette bottom panel stiffening structure according to claim 1, characterized in that: The core wall (9) is made of aluminum alloy and is located on the inner side of the honeycomb layer (8).

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