Wall-mounted power box
By designing a multi-level waterproof structure and directional heat dissipation channels in the power supply box, the contradiction between waterproofing and heat dissipation in humid environments is resolved, achieving a balance between waterproofing and heat dissipation under IP44 protection level, ensuring the normal operation of the power supply box under ship or open-air conditions.
Patent Information
- Application Number
- CN202520347364.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-28
AI Technical Summary
There is a contradiction between waterproofing and heat dissipation in existing power supply boxes. Power supply boxes that cannot meet both waterproofing and heat dissipation requirements are not effective in humid environments, especially in shipboard or open-air conditions, where water can easily seep in through ventilation holes, causing electrical components to fail.
It adopts a foldable waterproof baffle and foldable waterproof structure design, including foldable waterproof baffles and bent waterproof baffles in the cabinet assembly. Combined with the front and rear waterproof baffles and the bent structure, it forms a multi-level waterproof structure, and ensures rapid heat dissipation through directional heat dissipation channel design.
The power supply box achieves a balance between waterproof and heat dissipation performance under IP44 protection level. The waterproof performance meets the IP44 standard, and the internal temperature rise is ≤15℃, which meets the module's operating temperature requirements.
Smart Images
Figure CN223927913U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a wall -hanging power box structure, this power box can satisfy the protection level requirement of full IP44, ensure that the power box satisfies the waterproof requirement on the basis of satisfying the heat dissipation requirement. BACKGROUND
[0002] The power box plays a more and more important role in the present power system, and is an electrical device for centralized power supply, power distribution and power supply for related electrical equipment, and is widely used in military and civilian fields. The power box is similar to the power cabinet, and the power box is installed with a corresponding functional module in the box body to meet the performance requirements. The module itself can meet the heat dissipation requirement through the heat dissipation channel and the fan, but the heat discharged from the module will accumulate in the box body, and when the heat in the box body accumulates too much, it will affect the temperature rise of the module, which may eventually lead to the failure of the module.
[0003] In order to discharge the heat in the box body to the surrounding environment, the power box with conventional wall -hanging structure usually has corresponding ventilation holes in front and back of the power box, and the ventilation holes are provided with louver windows, and fans are installed at corresponding positions of the box body to perform air extraction and blowing, so as to meet the heat dissipation requirement. However, under the condition of ship or open air, the outdoor power box often faces the splashing of seawater or rainwater. Under the splashing condition, the conventional power box with front and back ventilation hole structure is difficult to meet the waterproof requirement, and water can penetrate into the power box from the louver blade gap and the ventilation hole, which may cause short circuit failure of the electrical devices in the box body. Generally, the better the sealing of the box body, the better the waterproof effect, but the heat dissipation of this type of power box is difficult to meet the requirement, so it can be seen that the waterproof requirement and the heat dissipation requirement of the electrical equipment such as power box are often contradictory. Therefore, it is necessary to design a new power box structure, so that the power box can meet the overall heat dissipation requirement and the waterproof requirement under the condition of IP44. SUMMARY
[0004] The present application aims to provide a new wall -hanging power box, which can meet the overall heat dissipation requirement and the waterproof requirement under the condition of IP44.
[0005] In order to achieve the above purpose, the technical scheme of the utility model is as follows: a wall -hanging power box, comprising a box body assembly, a module, a cover plate assembly, a front waterproof baffle and a rear waterproof baffle.
[0006] The front part of the box body assembly is a large opening structure, the back part is provided with a ventilation hole and a bending waterproof baffle surrounding the ventilation hole, the bottom of the bending waterproof baffle is provided with a water leakage hole, and the four corners are welded with mounting studs.
[0007] The module is installed in the box body and adopts a front air inlet and rear air outlet heat dissipation mode.
[0008] The cover assembly includes a cover plate and a shielding ventilation plate. A conductive adhesive strip is attached to the inner side of the cover plate, which is connected to the housing via hinges. The shielding ventilation plate is provided with waveguide holes and mounting studs welded at the four corners.
[0009] The front and rear waterproof baffles are fixed to the studs of the shielding ventilation plate and the bent baffle on the back of the enclosure through mounting holes, forming a heat dissipation gap with the corresponding components.
[0010] Furthermore, the front opening of the housing assembly undergoes a secondary bending process, and the bending joints are fully welded to ensure waterproof sealing.
[0011] Furthermore, the shielding ventilation plate and the top bent edge of the cover plate are connected by full welding, and there is no gap at the top bent edge of the cover plate.
[0012] Furthermore, the conductive adhesive strip is tightly fitted to the secondary bending edge at the front of the box, achieving both electromagnetic shielding and waterproofing functions.
[0013] Furthermore, the front waterproof baffle and the shielded ventilation plate are fixed together by mounting studs, and a height gap is maintained to ensure air intake.
[0014] Furthermore, a drainage channel is formed between the rear waterproof baffle and the bent baffle on the back of the box, and the water leakage hole at the bottom of the bent baffle is used to drain the incoming rainwater.
[0015] Furthermore, the size and spacing of the waveguide apertures meet the electromagnetic shielding requirements while allowing air circulation.
[0016] Furthermore, the mounting holes of the front and rear waterproof baffles correspond one-to-one with the studs on the bent baffle, forming a multi-level waterproof structure.
[0017] Furthermore, the cover assembly is locked to the front bent edge of the housing with knurled screws to enhance the sealing of the contact surface.
[0018] Furthermore, the gap between the bent waterproof baffle and the rear waterproof baffle is perpendicular to the direction of gravity, ensuring unobstructed heat dissipation path.
[0019] The advantages of this utility model compared with the prior art are as follows:
[0020] This invention resolves the conflict between heat dissipation and waterproofing through a multi-layered waterproof structure and directional heat dissipation channel design, making it suitable for humid environments such as ships and open spaces. Specifically, it features no exposed openings, meeting IP44 protection requirements; waveguide holes and conductive strips provide electromagnetic shielding; front and rear baffles and bending structures create multi-level waterproofing, allowing rainwater to drain by gravity; and the heat dissipation channels are separated from the waterproof gaps, ensuring rapid heat dissipation.
[0021] Verification results: Waterproof performance: In the IP44 test, a 1mm diameter tester could not penetrate, and there was no leakage after continuous water spraying for 30 minutes; Heat dissipation performance: When running under full load, the temperature rise inside the chamber is ≤15℃, which meets the module's operating temperature requirements.
[0022] Therefore, the wall-mounted power supply box of this utility model can be widely used in outdoor open-air scenarios. The power supply box with this structure can meet both the heat dissipation requirements of the box and the waterproof requirements under the IP44 protection level, thus solving the problem of the conflict between heat dissipation and waterproofing of the power supply box. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structural components of a wall-mounted power supply box.
[0024] Figure 2 This is a schematic diagram of the main structure of the power supply box;
[0025] Figure 3 This is a schematic diagram of the cover plate assembly structure;
[0026] Figure 4 This is a schematic diagram of the front waterproof baffle.
[0027] Figure 5 A partial schematic diagram of the combination of the front waterproof baffle and the shielding ventilation panel;
[0028] Figure 6 This is a schematic diagram of the rear waterproof baffle.
[0029] Figure 7 This is a partial schematic diagram of the combination of the rear waterproof baffle and the bent baffle on the back of the box. Detailed Implementation
[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0031] like Figures 1 to 7 As shown in the figure, the wall-mounted power supply box proposed in this embodiment of the present invention is mainly composed of a cover plate assembly 1, a front waterproof baffle 2, a box body assembly 3, a module 4, and a rear waterproof baffle 5.
[0032] Regarding the IP44 protection rating requirement, the wall-mounted power supply box of this utility model has no direct openings or openings exposed on the outer surface, and all openings inside the box are covered by baffles. Therefore, this wall-mounted power supply box meets the protection requirement that "test tools with a diameter of 1 mm or more shall not enter the shell".
[0033] Enclosure component 3 is the main body of the power supply box, such as... Figure 2As shown in (a) and (b), the front of the enclosure has a large opening (opening bend edge 8), which is used for installing and removing various modules and other electrical components inside the enclosure. Ventilation holes are opened at the back of the enclosure, and a bendable waterproof baffle 7 is welded around the ventilation hole area. The bottom of the waterproof baffle 7 has a water leakage hole, and mounting studs are welded to the four corners of the waterproof baffle 7.
[0034] Module 4 is installed inside the enclosure and uses a front-to-back airflow cooling method. All the heat from the modules accumulates at the back of the enclosure and is then extracted by the rear fan 6.
[0035] like Figure 3 As shown in (a) and (b), the cover assembly 3 mainly consists of a cover plate 9 and a shielding ventilation plate 10. The shielding ventilation plate 10 has waveguide holes, which can effectively shield electromagnetic signals. Simultaneously, mounting studs are welded to the four corners of the shielding ventilation plate. The entire cover assembly 3 is mounted on the enclosure via side hinges. The top of the cover plate 9 undergoes a special type of waterproof bending 11, with the bending edge fully welded to ensure no gaps. Similarly, the shielding ventilation plate is also fully welded to the top bending edge of the cover plate, ensuring no gaps between the shielding ventilation plate and the cover body bending edge. A conductive strip is affixed to the inner side of the cover plate, tightly fitting the front bending edge of the enclosure body. This not only shields electromagnetic signals inside and outside the enclosure but also effectively eliminates gaps between the cover plate and the enclosure contact surface, thus providing a waterproof function.
[0036] like Figure 2 and Figure 3 As shown, a secondary bending process is performed around the large opening at the front of the power supply box, and full welding is performed at the bending joint. After the cover plate assembly 1 is assembled onto the box, the conductive rubber strip on the inner side of the cover plate assembly will adhere to the secondary bending edge at the front of the box. By tightening the knurled screws on the cover plate, a tight fit between the cover plate assembly and the secondary bending edge of the box can be achieved, thereby ensuring the waterproof sealing of the large opening of the box.
[0037] Front waterproof baffle 2 Figure 4 As shown, the front waterproof baffle 2 has mounting holes, which correspond one-to-one with the mounting studs on the shielding ventilation plate. The front waterproof baffle 2 is installed on the shielding ventilation plate through these mounting holes. When rainwater splashes onto the enclosure cover, most of the rainwater is blocked by the front waterproof baffle, and only a portion enters the bending groove at the top of the cover. The rainwater entering the bending groove will automatically fall from both sides of the groove due to gravity. Only a small portion of the rainwater will splash into the space between the shielding ventilation plate and the front waterproof baffle; similarly, this portion will also fall naturally due to gravity. The combination of the shielding ventilation plate and the front waterproof baffle (as shown) Figure 5(As shown) This makes it difficult for rainwater to enter the power supply box. At the same time, there is a height gap between the front waterproof baffle and the shielding ventilation plate, which ensures that the front waterproof baffle does not obstruct the entry of cool air required for heat dissipation of the entire power supply box.
[0038] like Figure 5 As shown, the front waterproof baffle 2 is mounted on the welded studs of the shielding ventilation plate using corresponding screws. When the front of the enclosure and the cover assembly 1 are splashed by rainwater, most of the rainwater will be blocked by the waterproof baffle, but some rainwater (rainwater splash direction A) will still enter the bending groove of the cover plate. At this time, the secondary bending edge on the cover plate comes into play, preventing some of the infiltrated rainwater from splashing further into the gap between the shielding ventilation plate and the front waterproof baffle 2.
[0039] To accommodate overall heat dissipation, the front of the power supply unit needs sufficient airflow. Therefore, the secondary bend on the upper part of the cover cannot be too long. This may result in a small amount of rainwater (rainwater splashing direction B) still splashing into the gap between the shielding ventilation plate and the front waterproof baffle 2 after a secondary bounce. However, this splashed rainwater has very little kinetic energy after the secondary bounce, and under the influence of gravity, it will flow directly out from the bend groove on the cover. Some rainwater may also splash onto the front waterproof baffle 2 from the bottom or side, typically as shown in the example below. Figure 5 As shown in (rain splash direction 3C), this portion of rainwater is reflected once and enters the inner side of the front waterproof baffle 2. However, due to gravity, this portion of rainwater will fall directly down and will not splash into the interior of the shielding ventilation panel. The principle of side protection against rain splash is roughly the same.
[0040] The rear waterproof baffle 5 is similar to the front waterproof baffle 2, such as... Figure 6 As shown, the rear waterproof baffle 5 has mounting holes, through which it is installed onto the mounting studs at the bend on the back of the enclosure. The rear waterproof baffle 5 blocks most rainwater intrusion; some rainwater that enters the rear waterproof baffle 5 will fall directly due to gravity, and only a very small portion will enter the waterproof bend at the back of the enclosure. A drainage hole is located on the underside of the waterproof bend at the back of the enclosure, allowing rainwater inside the bend to flow out. The combination of the rear waterproof baffle and the bend at the back of the enclosure (as shown) Figure 7 (As shown) This makes it difficult for rainwater to enter the enclosure. Furthermore, the gap between the rear waterproof baffle and the bent baffle on the back of the enclosure ensures that heat inside the enclosure can be dissipated promptly.
[0041] like Figure 7As shown, the rear waterproof baffle 5 is installed on the welded studs of the bent baffle on the back of the enclosure using screws. When the back of the enclosure is splashed by rain, the rear waterproof baffle 5 will block most of the rainwater, but some rainwater will still enter the space between the rear waterproof baffle and the bent baffle on the back of the enclosure. Some of this rainwater will be blocked by the bent edge of the bent baffle on the back of the enclosure, while the rainwater with greater kinetic energy (rainwater splashing direction fourD) will bounce twice and enter the bent baffle on the back of the enclosure. The rainwater entering the bent baffle will fall to the bottom of the bent baffle on the back of the enclosure under its own gravity. The bottom of the bent baffle has a drainage hole 12, from which the rainwater will flow out. Rainwater splashed from the bottom and sides of the rear waterproof baffle is also difficult to enter the interior of the enclosure under the influence of gravity. In addition, the space between the rear waterproof baffle and the bent baffle on the back of the enclosure also ensures the exhaust of heat from inside the enclosure, ensuring the overall heat dissipation requirements of the power supply box.
Claims
1. A wall-mounted power pack, characterised in that, The box assembly, the module, the cover plate assembly, the front waterproof baffle and the rear waterproof baffle are included. The front part of the box assembly is a large opening structure, the back part is provided with a ventilation hole and a bending waterproof baffle surrounding the ventilation hole, the bottom of the bending waterproof baffle is provided with a water leakage hole, and mounting studs are welded at four corners. The module is installed in the box, and a front air inlet and rear air outlet heat dissipation mode is adopted. The cover plate assembly includes a cover plate and a shielding ventilation plate, a conductive rubber strip is attached to the inner side of the cover plate, and the cover plate is connected with the box through a hinge; the shielding ventilation plate is provided with waveguide holes and mounting studs welded at four corners. The front waterproof baffle and the rear waterproof baffle are respectively fixed on the mounting studs of the shielding ventilation plate and the bending baffle at the back of the box, and a heat dissipation gap is formed between the corresponding parts.
2. The wall pack power supply enclosure of claim 1, wherein, The front part of the box assembly is subjected to secondary bending treatment, and full welding is adopted at the bending joint to ensure waterproof sealing.
3. The wall pack power supply enclosure of claim 1, wherein, The shielding ventilation plate and the top bending edge of the cover plate are connected through full welding, and the top bending edge of the cover plate has no gap.
4. The wall pack electrical power box of claim 1, wherein, The conductive rubber strip is tightly attached to the secondary bending edge of the front part of the box, realizing electromagnetic shielding and waterproof dual functions.
5. The wall pack electrical power box of claim 1, wherein, The front waterproof baffle and the shielding ventilation plate are fixed through mounting studs, and a height gap is reserved to ensure the air inlet amount.
6. The wall pack electrical power box of claim 1, wherein, The rear waterproof baffle and the bending baffle at the back of the box form a drainage channel, and the water leakage hole at the bottom of the bending baffle is used to drain the entering rainwater.
7. The wall pack of claim 1, wherein, The size and spacing of the waveguide holes meet the electromagnetic shielding requirements, while allowing air flow.
8. The wall pack of claim 1, wherein, The mounting hole positions of the front waterproof baffle and the rear waterproof baffle correspond to the studs on the bending baffle one by one, forming a multi-level waterproof structure.
9. The wall pack of claim 1, wherein, The cover plate assembly is locked with the bending edge of the front part of the box through knurled screws, enhancing the sealing property of the contact surface.
10. The wall pack of claim 1, wherein, The gap direction of the bending waterproof baffle and the rear waterproof baffle is perpendicular to the direction of gravity, ensuring the smoothness of the heat dissipation path.