A fan case and inverter
By designing a fan box with a protective cover and mesh, the problem of exposed terminals and wires was solved, thus protecting the terminals and wires and improving the stability and safety of the inverter.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO DEYE INVERTER TECHNOLOGY CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, the wiring terminals and wires of the fan box are exposed to the external environment, making them easy for animals to chew on, which can lead to problems such as leakage and short circuits, increasing equipment maintenance costs and safety hazards, and shortening the equipment life.
Design a fan box including a protective cover, which consists of a main body and a closed part to form a semi-sealed chamber to protect the wiring terminals and wires. Combined with a protective mesh and lead wire channel, it prevents biting and dust intrusion.
It effectively prevents animals from gnawing on the terminals and wires, improves the stability of inverter operation and equipment safety, and extends service life.
Smart Images

Figure CN224318737U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fan boxes, specifically relating to a fan box and an inverter. Background Technology
[0002] In existing technologies, the terminals and wires connecting the fan box are typically exposed to the external environment. While this design is simple and straightforward, it introduces a series of problems. Because the wiring is usually exposed, even with relatively good heat dissipation, animal chewing is an often underestimated but real issue, especially in certain applications such as agricultural facilities and outdoor power equipment. Rats or other small animals may gnaw on the wires, damaging the insulation and causing problems such as leakage and short circuits. In severe cases, this can even lead to fires, increasing equipment maintenance costs and safety hazards while shortening the overall lifespan of the equipment. Utility Model Content
[0003] To address the shortcomings of existing technologies, this application proposes a fan housing, comprising a plurality of fans, a protective cover, and a fan mounting plate, wherein:
[0004] The fan mounting plate is provided with a plurality of air vents, and the fan is provided on the fan mounting plate in a one-to-one correspondence with the air vents;
[0005] The protective cover is located on one side of the fan mounting plate. The protective cover includes a main body and a closing part. The main body is integrally formed with the fan mounting plate. A semi-sealed chamber is formed inside the main body. The closing part is movably connected to the opening of the semi-sealed chamber.
[0006] In the aforementioned fan box, the main body includes a top plate, a protective plate, a first side plate, and a second side plate. The first side plate and the second side plate are respectively connected to both sides of the protective plate and together with the protective plate and the top plate, form the semi-sealed chamber.
[0007] In the aforementioned fan box, both the protective plate and the enclosure have several grid holes arranged in an array.
[0008] In one of the aforementioned fan housings, a through hole is provided on the fan mounting plate, and a locking hole aligned with the through hole is provided on the fan.
[0009] In one of the aforementioned fan boxes, a protective mesh is also provided on the side of the fan mounting plate facing away from the fan.
[0010] In one of the aforementioned fan boxes, the protective netting includes connecting ribs and several partition ribs, with the partition ribs connected to the connecting ribs, and the ends of the connecting ribs having connecting hooks.
[0011] In one of the aforementioned fan boxes, a first flange is provided on one side edge of the fan mounting plate, and a first mounting hole is provided on the first flange.
[0012] In one of the fan boxes described above, the second side plate is provided with a second flange, and the second flange is provided with a second mounting hole.
[0013] In one of the aforementioned fan boxes, the fan mounting plate is folded towards the fan along several fan arrangement directions to form a lead wire channel.
[0014] This application also proposes an inverter, including the aforementioned fan box, and further including a terminal block, wherein the fan of the fan box is connected to the terminal block via a wire in the semi-sealed cavity.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] Protecting the inverter terminals and the wires connected to them with protective covers can effectively prevent animals from chewing on the terminals and wires, thereby improving the stability of inverter operation. Attached Figure Description
[0017] Figure 1 This is a perspective view of an inverter provided in this application;
[0018] Figure 2 This is a structural diagram of the fan box. Figure 1 This is used to show the structure located on the back of the fan;
[0019] Figure 3 This is a structural diagram of the fan box. Figure 2 This is used to show the structure of the front of the fan;
[0020] Figure 4 This is a schematic diagram of the installation structure of the protective net on the fan mounting plate;
[0021] Figure 5 This is a schematic diagram of the installation structure between the fan box and the electronic components on the inverter.
[0022] In the diagram, 1 is the fan; 10 is the locking hole; 2 is the protective cover; 20 is the main body; 200 is the top plate; 201 is the protective plate; 202 is the first side plate; 203 is the second side plate; 203a is the second flange; 203b is the second mounting hole; 204 is the semi-sealed chamber; 21 is the enclosed part; 210 is the grille hole; 3 is the fan mounting plate; 30 is the through hole; 31 is the protective net; 310 is the connecting rib; 310a is the connecting hook; 311 is the partition rib; 32 is the first flange; 320 is the first mounting hole; 33 is the lead wire channel; 34 is the vent; and 4 is the terminal block. Detailed Implementation
[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.
[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0025] like Figure 1 As shown in the figure, this solution mainly describes a fan box structure used in inverters, but the structure of the fan box is not limited to the case of inverters, and can also be applied to other devices that use fan boxes.
[0026] Example 1:
[0027] like Figures 1 to 4 As shown, a fan box includes several fans 1, a protective cover 2, and a fan mounting plate 3. The fan mounting plate 3 is provided with several vents 34, and the fans 1 are correspondingly arranged on the fan mounting plate 3. The protective cover 2 is located on one side of the fan mounting plate 3. The protective cover 2 includes a main body 20 and a sealing part 21. The main body 20 is integrally formed with the fan mounting plate 3. A semi-sealed chamber 204 is formed inside the main body 20. The sealing part 21 is integrally connected to the opening of the semi-sealed chamber 204.
[0028] Traditional fan housings often have exposed wiring (used to power fan 1) that is completely exposed to the environment. Over time, animals will chew on this wiring. To solve this technical problem, specifically, such as... Figures 1 to 4 As shown, the protective cover 2 in this embodiment consists of two parts: a main body 20 and a closed part 21. The main body 20, the closed part 21, and the fan mounting plate 3 are integrally formed, which enhances the overall strength performance. At the same time, the semi-sealed cavity 204 formed in the main body 20 provides sufficient space for the connection line of the fan 1. Together with the closed part 21, it can effectively prevent external factors such as dust and animal chewing from damaging the connection line, greatly improving the safety of the equipment.
[0029] The main body 20 includes a top plate 200, a protective plate 201, a first side plate 202 and a second side plate 203. The first side plate 202 and the second side plate 203 are respectively connected to the two sides of the protective plate 201, and together with the protective plate 201 and the top plate 200, they form a semi-sealed chamber 204.
[0030] like Figure 2 and Figure 3 As shown, the main body 20 in this embodiment consists of four parts: a top plate 200, a protective plate 201, a first side plate 202, and a second side plate 203. These components are designed as an integrally formed structure, which enhances the overall strength of the protective cover 2. The semi-sealed chamber 204 formed can accommodate the connection line used to connect the fan 1, preventing the connection line from being pulled or bitten and becoming loose or damaged.
[0031] Preferably, such as Figure 2 and Figure 3 As shown, in this embodiment, both the protective plate 201 and the enclosure 21 are provided with a plurality of grid holes 210 arranged in an array, and the grid holes 210 are used to ensure ventilation and heat dissipation efficiency.
[0032] More preferably, the protective plate 201 and the enclosure 21 in this embodiment can also be manufactured as solid structures (i.e., without grille holes 210). In other words, the internal environment cannot be directly observed by the naked eye from the outside, which can more effectively resist possible mechanical damage, such as animal bites or accidental collisions, thereby protecting the internal components from damage. Moreover, this solid design helps to better isolate external dust and other pollutants.
[0033] The fan mounting plate 3 has a through hole 30, and the fan 1 has a locking hole 10 aligned with the through hole 30.
[0034] like Figure 2 and Figure 3 As shown, when installing the fan 1 on the fan mounting plate 3, the through hole 30 on the fan mounting plate 3 is aligned with the locking hole 10 on the fan 1, and then a self-tapping screw is threaded through the through hole 30 and fixed to the locking hole 10. In this embodiment, the locking hole 10 is a smooth hole.
[0035] like Figure 1 and Figure 4 As shown, in this embodiment, a protective net 31 is also provided on the side of the fan mounting plate 3 facing away from the fan 1. The main function of the protective net 31 is to prevent external objects (such as hands, tools, etc.) from accidentally entering the area of the operating fan 1, thereby greatly reducing potential safety risks; at the same time, it can also prevent foreign objects from entering the interior of the fan 1, reducing the possibility of damage to the fan 1 blades caused by impact from external objects, and helping to extend the service life of the fan 1 and its related equipment.
[0036] The protective net 31 includes a connecting rib 310 and several partition ribs 311. The partition ribs 311 are connected to the connecting rib 310, and the ends of the connecting ribs 310 are formed with connecting hooks 310a.
[0037] like Figure 4As shown, in this embodiment, the plurality of partition ribs 311 are concentric ring structures with different diameters. The partition ribs 311 are fixed by connecting ribs 310 (which can be connected by welding) to ensure the overall stability of the protective net 31 structure. Furthermore, in this embodiment, the connecting ribs 310 are preferably V-shaped. Specifically, in this embodiment, a connecting hook 310a is formed at the end of each connecting rib 310. A self-tapping bolt passes through the connecting hook 310a and the through hole 30 in sequence, and then engages with the locking hole 10 to fix the protective net 31.
[0038] like Figure 1 and Figure 2 As shown, this embodiment also has a first flange 32 on one side edge of the fan mounting plate 3, and a first mounting hole 320 on the first flange 32. Bolts pass through the first mounting hole 320 to connect with the inverter, thereby fixing the fan box.
[0039] like Figure 2 and Figure 3 As shown, this embodiment also provides a second flange 203a on the second side plate 203, and a second mounting hole 203b on the second flange 203a. The second mounting hole 203b allows bolts to pass through and be threadedly connected to the inverter, thereby fixing the fan box.
[0040] like Figure 3 As shown, in this embodiment, the fan mounting plate 3 is folded towards the fan along the edge of the arrangement direction of the plurality of fans 1 to form a lead wire channel 33. The lead wire channel 33 allows the wires of the plurality of fans 1 to extend to the protective cover 2 through the lead wire channel 33, which has the effect of centralized storage of the wires and avoids the wires from being exposed.
[0041] Example 2:
[0042] This second embodiment also proposes an inverter that includes the fan box from the first embodiment described above, such as... Figure 5 As shown, the inverter also includes a terminal block 4. By covering the terminal block 4 with the protective cover 2 in Embodiment 1 (i.e., the terminal block 4 is located in the semi-sealed chamber 204), and in conjunction with the lead wire channel 33, the fan 1 of the fan box can be connected to the terminal block 4 through the wire in the semi-sealed chamber 204. This effectively prevents animals from chewing on the wire, ensures the inverter operates stably for a long time, and improves the reliability and service life of the whole machine.
[0043] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0044] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
[0045] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.
Claims
1. A fan box, characterized in that, Includes several fans, a protective cover, and a fan mounting plate, among which: The fan mounting plate is provided with a plurality of air vents, and the fan is provided on the fan mounting plate in a one-to-one correspondence with the air vents; The protective cover is located on one side of the fan mounting plate. The protective cover includes a main body and a closing part. The main body is integrally formed with the fan mounting plate. A semi-sealed chamber is formed inside the main body. The closing part is movably connected to the opening of the semi-sealed chamber.
2. A fan box according to claim 1, characterized in that, The main body includes a top plate, a protective plate, a first side plate, and a second side plate. The first side plate and the second side plate are respectively connected to both sides of the protective plate and together with the protective plate and the top plate, form the semi-sealed chamber.
3. A fan box according to claim 2, characterized in that, Both the protective plate and the enclosure have several grid holes arranged in an array.
4. A fan box according to claim 1, characterized in that, The fan mounting plate has a through hole, and the fan has a locking hole aligned with the through hole.
5. A fan box according to claim 1, characterized in that, The side of the fan mounting plate facing away from the fan is also provided with a protective net.
6. A fan box according to claim 5, characterized in that, The protective netting includes connecting ribs and several partition ribs, with the partition ribs connected to the connecting ribs, and the ends of the connecting ribs having connecting hooks.
7. A fan box according to claim 1, characterized in that, The fan mounting plate has a first flange on one side edge, and a first mounting hole is provided on the first flange.
8. A fan box according to claim 2, characterized in that, The second side plate is provided with a second flange, and the second flange is provided with a second mounting hole.
9. A fan box according to claim 1, characterized in that, The fan mounting plate is folded towards the fan along the edges of several fan arrangement directions to form lead wire channels.
10. An inverter, characterized in that, The fan box includes any one of claims 1-9, and further includes a terminal block, wherein the fan of the fan box is connected to the terminal block via a wire in the semi-sealed cavity.