Output intrinsically safe power supply with ultra-small volume

Abstract

The utility model relates to the field of output intrinsically safe power supplies, and discloses an ultra-small output intrinsically safe power supply, which comprises a shell, a mounting plate arranged on the lower surface of the shell, an intrinsically safe power supply arranged on the upper surface of the mounting plate, and a flyback switching power supply arranged on the upper surface of the mounting plate. A heat dissipation assembly is arranged on the upper surface of the mounting plate, and a fixing assembly is arranged in the shell; the heat dissipation assembly comprises heat conduction plates, the heat conduction plates are fixedly connected to the bottom of the intrinsic safety power source and the bottom of the flyback switching power source respectively, and an insulation pad is arranged between the intrinsic safety power source and the flyback switching power source. According to the utility model, heat generated by the power supply module is absorbed through the heat conducting plate and conducted to the heat conducting pipe, the heat conducting pipe transfers the heat to the heat dissipation fins, the heat dissipation fins further conduct the heat to the external environment through the shell, the heat dissipation effect is improved, and the heat dissipation effect of equipment is improved through the structure.

Description

Technical Field

[0001] This utility model relates to the field of intrinsically safe power supplies, and in particular to an intrinsically safe power supply with an ultra-small size. Background Technology

[0002] In modern industrial automation, petrochemicals, and coal mining, intrinsically safe power supplies, due to their characteristic that neither the electrical sparks nor the thermal effects generated under normal operation or specified fault conditions can ignite a specified explosive gas environment, have become key components ensuring the safe operation of equipment. As equipment develops towards miniaturization and integration, the demand for ultra-small, intrinsically safe power supplies is becoming increasingly urgent. These power supplies must not only meet stringent safety standards but also possess high efficiency and reliable stability.

[0003] Existing intrinsically safe power supplies mainly employ traditional heat dissipation technologies. Some power supplies increase the surface area of ​​the casing and create textured surfaces or heat sinks to allow natural air convection to carry away heat. Other products fill the space between the power module and the casing with phase change material. When the power supply generates heat, the phase change material absorbs the heat and undergoes a phase change, achieving temporary heat storage and slow release.

[0004] Existing intrinsically safe power supplies have difficulty quickly and effectively transferring the heat generated by the power module to the external environment. Due to size limitations, heat tends to accumulate inside the power supply, causing the power module temperature to rise and thus affecting the power supply's performance and stability. To address this issue, an ultra-small intrinsically safe power supply is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an ultra-small intrinsically safe power supply, which aims to improve the problem that in the prior art, due to the size limitation, heat easily accumulates inside the power supply, causing the power module temperature to rise, and thus affecting the performance and stability of the power supply.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An ultra-small intrinsically safe power supply includes a housing, a mounting plate on the lower surface of the housing, an intrinsically safe power supply on the upper surface of the mounting plate, a flyback switching power supply on the upper surface of the mounting plate, a heat dissipation component on the upper surface of the mounting plate, and a fixing component inside the housing.

[0008] The heat dissipation assembly includes a heat-conducting plate, which is fixedly connected to the bottom of the intrinsically safe power supply and the flyback switching power supply. An insulating pad is provided between the intrinsically safe power supply and the flyback switching power supply. A mounting plate is fixedly connected to a mounting base on its upper surface and inside the housing. A heat pipe is fixedly connected to the side wall of the heat-conducting plate, and the side wall of the heat pipe is attached to the inside of the mounting base. A heat dissipation fin is fixedly connected to the other end of the heat pipe, and the side wall of the heat dissipation fin is attached to the inner wall of the housing. The evaporation end of the heat pipe is located inside the heat-conducting plate, and the condensation end of the heat pipe is located inside the heat dissipation fin.

[0009] As a further description of the above technical solution:

[0010] The fixing component includes a fixing shell, the side wall of which is fixedly connected to the inside of the outer shell, and a slot is provided inside the mounting plate, with the side wall of the fixing shell slidably connected to the inside of the slot.

[0011] As a further description of the above technical solution:

[0012] The outer casing, heat-conducting plate, and heat dissipation fins are all made of aluminum for rapid heat transfer. The insulating pad is used to isolate the intrinsically safe power supply and flyback switching power supply to avoid electromagnetic interference.

[0013] As a further description of the above technical solution:

[0014] The fixed shell has a threaded block inside, and a handle is fixedly connected to the upper surface of the threaded block.

[0015] As a further description of the above technical solution:

[0016] A slider is slidably connected inside the fixed shell, and a spring is provided inside the fixed shell.

[0017] As a further description of the above technical solution:

[0018] One end of the spring is fixedly connected to the side wall of the threaded block, and the other end of the spring is fixedly connected to the side wall of the slider.

[0019] As a further description of the above technical solution:

[0020] A ball bearing is slidably connected inside the fixed shell, the sidewall of the slider is attached to the sidewall of the ball bearing, and the sidewall of the ball bearing is slidably connected inside the slot.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the heat generated by the power module is absorbed by the heat-conducting plate and conducted to the heat pipe. The heat pipe transfers the heat to the heat dissipation fins, which then conduct the heat to the external environment through the outer shell, thereby improving the heat dissipation effect. This solves the problem that some intrinsically safe power supplies, due to size limitations, tend to accumulate heat inside the power supply, causing the power module temperature to rise and thus affecting the performance and stability of the power supply. The above structure improves the heat dissipation effect of the device.

[0023] 2. In this utility model, by rotating the handle, the pressure between the ball and the slot is reduced, and then the outer shell can be separated from the mounting plate by pulling upwards, which makes disassembly convenient and quick, thereby facilitating the maintenance and repair of the internal components of the power supply and effectively reducing maintenance costs and time. Attached Figure Description

[0024] Figure 1 A three-dimensional schematic diagram of an intrinsically safe power supply with an ultra-small volume proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the mounting plate for an ultra-small volume intrinsically safe power supply proposed in this utility model.

[0026] Figure 3 This is a schematic diagram of the internal structure of the casing of an ultra-small volume intrinsically safe power supply proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the casing of an ultra-small volume intrinsically safe power supply proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the fixed housing of an ultra-small volume intrinsically safe power supply proposed in this utility model.

[0029] Legend:

[0030] 1. Housing; 2. Mounting plate; 3. Intrinsically safe power supply; 4. Flyback switching power supply; 5. Insulating pad; 6. Heat-conducting plate; 7. Heat pipe; 8. Heat sink fins; 9. Mounting base; 10. Mounting shell; 11. Threaded block; 12. Handle; 13. Spring; 14. Slider; 15. Ball bearing; 16. Slot. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] reference Figures 1-3This utility model provides an embodiment of an intrinsically safe power supply with an ultra-small volume, comprising a housing 1. A mounting plate 2 is provided on the lower surface of the housing 1. The mounting plate 2 supports components such as an intrinsically safe power supply 3, a flyback switching power supply 4, and a heat dissipation assembly, providing a stable mounting surface to ensure the fixed positions of each component and facilitate assembly and maintenance. The intrinsically safe power supply 3 is provided on the upper surface of the mounting plate 2. The intrinsically safe power supply 3 is used to intrinsically safe process the DC power output from the flyback switching power supply 4, outputting electrical energy that meets intrinsically safe standards, ensuring that it will not cause explosions or other hazards when used in hazardous environments. The flyback switching power supply 4 is located on the upper surface of the mounting plate 2. At the top of the intrinsically safe power supply 3, the flyback switching power supply 4 converts the input 220V AC power into a stable 24V DC power supply, providing a stable power supply for the subsequent intrinsically safe power supply 3. This two-layer structure reduces the size of the output intrinsically safe power supply, allowing it to be used in narrow and small explosion-proof cavities. This solves the resource waste and economic losses caused by previously requiring larger overall explosion-proof enclosures. A heat dissipation assembly is provided on the upper surface of the mounting plate 2, and a fixing assembly is provided inside the enclosure 1. The heat dissipation assembly includes a heat-conducting plate 6, which is fixedly connected to the bottom of both the intrinsically safe power supply 3 and the flyback switching power supply 4. The heat-conducting plate 6 is used to quickly absorb the heat generated by the intrinsically safe power supply 3 and the flyback switching power supply 4. Heat is absorbed by the heat pipe 7 and transferred to it, improving heat transfer efficiency. An insulating pad 5 is placed between the intrinsically safe power supply 3 and the flyback switching power supply 4 to isolate them and prevent electromagnetic interference, ensuring the stability and reliability of the power output. Mounting plates 2 and housing 1 are both fixedly connected to mounting bases 9, which support and fix the heat pipe 7, ensuring its stable position during heat transfer and preventing it from shaking and affecting heat dissipation. Heat pipes 7 are fixedly connected to the sidewalls of the heat-conducting plate 6, with the sidewalls of the heat pipe 7 fitting inside the mounting bases 9. The heat pipe 7 is used to quickly transfer the heat absorbed by the heat-conducting plate 6. The heat pipe 7 is fixedly connected to the heat sink 8 at one end and the heat sink 8 at the other end. The sidewall of the heat sink 8 is attached to the inner wall of the outer shell 1. The evaporation end of the heat pipe 7 is located inside the heat conduction plate 6, and the condensation end of the heat pipe 7 is located inside the heat sink 8. The heat pipe 7 is heated and evaporated into steam through the pure water medium inside. The steam formed by evaporation is under high pressure inside the heat pipe 7. Since the condensation end of the heat pipe 7 has a low temperature, the steam will flow rapidly to the condensation end under the action of pressure difference. When the steam reaches the condensation end, due to the large contact area between the heat sink 8 and the outside air, and the good heat dissipation performance of the aluminum heat sink 8, the heat can be quickly dissipated to the surrounding environment, so that the temperature of the condensation end decreases.Steam condenses rapidly into liquid upon encountering cooling at the condenser end, releasing a large amount of condensation heat. The condensed liquid then flows back to the evaporator end under gravity or capillary action, continuing the cycle. The heat pipe 7, in conjunction with the heat-conducting plate 6 and heat dissipation fins 8, forms a highly efficient heat dissipation channel, enabling rapid heat transfer from the heat-generating components to the external environment, effectively reducing the internal temperature of the power supply. The outer casing 1, heat-conducting plate 6, and heat dissipation fins 8 are all made of aluminum, a metal with excellent thermal conductivity, used for rapid heat conduction. The insulating pad 5 isolates the intrinsically safe power supply 3 and the flyback switching power supply 4 to prevent electromagnetic interference, ensuring the power supply operates normally and stably.

[0033] Reference Figures 4-5 The fixing assembly includes a fixing shell 10, a mounting plate 2 with a slot 16 inside, and the side wall of the fixing shell 10 slidingly connected to the slot 16. The two work together to initially position the mounting plate 2 inside the shell 1, facilitating further fixing. A threaded block 11 is threadedly connected inside the fixing shell 10, allowing for threaded rotation within the fixing shell 10. Rotating the threaded block 11 changes its position within the fixing shell 10, thereby pushing the slider 14. A handle 12 is fixedly connected to the upper surface of the threaded block 11, providing a point of force for the operator to rotate the threaded block 11. The slider 14 is slidably connected inside the fixing shell 10, sliding within the fixing shell 10. Under the push of the threaded block 11, the slider transmits force to the ball bearing 15, compressing and pushing the ball bearing 15. A spring 13 is installed inside the fixing shell 10, with one end fixedly connected to the side wall of the threaded block 11 and the other end fixedly connected to... The spring 13, attached to the side wall of the slider 14, provides elastic force after the threaded block 11 pushes the slider 14, allowing the slider 14 to return to its original position under the action of the spring 13 when it is not needed for fixing. This facilitates the disassembly and reinstallation of the mounting plate 2. The threaded block 11 moves in conjunction with the spring 13 and the slider 14. When the handle 12 is turned, the threaded block 11 moves, compressing the spring 13 and pushing the slider 14, thus transmitting force to the ball bearing 15. The ball bearing 15 is slidably connected inside the fixed shell 10. The side wall of the slider 14 fits against the side wall of the ball bearing 15, and the side wall of the ball bearing 15 is slidably connected inside the slot 16. The ball bearing 15 moves outward under the push of the slider 14 and fits tightly against the inner wall of the slot 16. Through the contact between the ball bearing 15 and the slot 16, the mounting plate 2 is fixed to the shell 1. Through the cooperation between the above structures, the mounting plate 2 is prevented from shifting or shaking due to vibration or other factors during power supply use, ensuring the stability of the internal structure of the power supply.

[0034] Working Principle: When this device is in operation, in terms of power conversion and supply, the flyback switching power supply 4 is arranged on the upper surface of the mounting plate 2. It uses an integrated module, and the converted stable DC power supply, through the upper layer layout, provides power to the intrinsically safe power supply 3, enabling the intrinsically safe power supply 3 to perform subsequent intrinsically safe output processing based on this stable DC. The two are mounted on the upper surface of the mounting plate 2, and an insulating pad 5 is placed in between to effectively isolate the intrinsically safe power supply 3 and the flyback switching power supply 4, avoiding electromagnetic interference between them and ensuring the operation of the power supply. For stability, during equipment operation, the heat-conducting plate 6 can quickly absorb the heat generated by the intrinsically safe power supply 3 and the flyback switching power supply 4. The evaporation end of the heat pipe 7 is located inside the heat-conducting plate 6. After absorbing heat, the working medium inside the heat pipe 7 evaporates, rapidly transferring the heat to the other end. The sidewall of the heat pipe 7 is attached to the inside of the mounting base 9, and the other end of the heat pipe 7 is fixedly connected to the heat dissipation fins 8, whose sidewalls are attached to the inner wall of the outer shell 1. When the working medium at the condensation end of the heat pipe 7 condenses and releases heat, the heat dissipation fins 8 can quickly dissipate the heat to the outer shell 1. Since the outer casing 1, heat-conducting plate 6, and heat dissipation fins 8 are all made of aluminum, the excellent thermal conductivity of aluminum allows heat to be quickly transferred between these components and ultimately dissipated to the external environment through the outer casing 1. This reduces the temperature of the intrinsically safe power supply 3 and the flyback switching power supply 4, ensuring stable operation of the power supply within a suitable temperature range. When installing the outer casing 1, the fixing shell 10 is inserted into the slot 16 to initially position the mounting plate 2 within the outer casing 1. Then, the handle 12 is turned, causing the threaded block 11 to rotate threadedly inside the fixing shell 10. As the threaded block 11 moves, it compresses the spring 1. 3. Spring 13 pushes slider 14 to move, slider 14 sidewall fits against ball 15, thus pushing ball 15 outward. Through the tight fit between ball 15 and slot 16, the mounting plate 2 and the outer shell 1 are firmly fixed, ensuring that the components of the power supply will not be displaced due to vibration or other factors during use, and ensuring stable operation of the power supply. When disassembling, turn handle 12 in the opposite direction, threaded block 11 moves in the opposite direction, spring 13 thrust decreases, and pressure between ball 15 and slot 16 decreases. At this time, mounting plate 2 can be pulled out of outer shell 1, achieving quick disassembly.

[0035] 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. An intrinsically safe power supply with an ultra-small volume, comprising a housing (1), characterized in that: The lower surface of the housing (1) is provided with a mounting plate (2), the upper surface of the mounting plate (2) is provided with an intrinsically safe power supply (3), the upper surface of the mounting plate (2) is provided with a flyback switching power supply (4), the upper surface of the mounting plate (2) is provided with a heat dissipation component, and the inside of the housing (1) is provided with a fixing component; The heat dissipation assembly includes a heat-conducting plate (6), which is fixedly connected to the bottom of the intrinsically safe power supply (3) and the flyback switching power supply (4). An insulating pad (5) is provided between the intrinsically safe power supply (3) and the flyback switching power supply (4). A mounting plate (2) and the inside of the outer shell (1) are both fixedly connected to a mounting base (9). A heat pipe (7) is fixedly connected to the side wall of the heat-conducting plate (6). The side wall of the heat pipe (7) is attached to the inside of the mounting base (9). A heat dissipation fin (8) is fixedly connected to the other end of the heat pipe (7). The side wall of the heat dissipation fin (8) is attached to the inner wall of the outer shell (1). The evaporation end of the heat pipe (7) is located inside the heat-conducting plate (6), and the condensation end of the heat pipe (7) is located inside the heat dissipation fin (8).

2. The intrinsically safe power supply with ultra-small volume according to claim 1, characterized in that: The fixing component includes a fixing shell (10), the side wall of the fixing shell (10) is fixedly connected to the inside of the outer shell (1), and a slot (16) is provided inside the mounting plate (2), and the side wall of the fixing shell (10) is slidably connected to the inside of the slot (16).

3. The intrinsically safe power supply with ultra-small volume according to claim 1, characterized in that: The outer shell (1), heat-conducting plate (6) and heat dissipation fins (8) are all made of aluminum to quickly transfer heat. The insulating pad (5) is used to isolate the intrinsically safe power supply (3) and the flyback switching power supply (4) to avoid electromagnetic interference.

4. The ultra-small volume intrinsically safe power supply according to claim 2, characterized in that: The fixed shell (10) has a threaded block (11) inside, and a handle (12) is fixedly connected to the upper surface of the threaded block (11).

5. The ultra-small volume intrinsically safe power supply according to claim 4, characterized in that: The fixed shell (10) is slidably connected to a slider (14), and a spring (13) is provided inside the fixed shell (10).

6. The ultra-small volume intrinsically safe power supply according to claim 5, characterized in that: One end of the spring (13) is fixedly connected to the side wall of the threaded block (11), and the other end of the spring (13) is fixedly connected to the side wall of the slider (14).

7. The ultra-small volume intrinsically safe power supply according to claim 6, characterized in that: The fixed shell (10) has a ball (15) slidably connected inside, the side wall of the slider (14) is attached to the side wall of the ball (15), and the side wall of the ball (15) is slidably connected inside the slot (16).

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