Heat dissipation structure of mobile robot controller

Abstract

A heat dissipation structure of a mobile robot controller comprises a shell which is provided with an external heat dissipation fin group and an external heat dissipation fan installation part, and the external heat dissipation fin group comprises a plurality of external heat dissipation fins; a heat dissipation fan mounted on the external heat dissipation fan mounting part; the external heat dissipation fin cover plate is connected with the external heat dissipation fin group, an air inlet channel is formed in the part, corresponding to the external heat dissipation fan mounting part, of the external heat dissipation fin cover plate, and an external heat dissipation fin duct is formed between any two adjacent external heat dissipation fins; the heat dissipation fan is started, external air is sucked in from the air inlet channel, the air is accelerated by the heat dissipation fan and then blown to the outer surface of the shell, then flows to the air inlet of the external heat dissipation fin duct, and is exhausted from the air outlet of the external heat dissipation fin duct after flowing through the external heat dissipation fin duct; the heat dissipation structure of the mobile robot controller meets the requirement of the heat dissipation structure of the current mobile robot controller, and meanwhile, the heat dissipation effect is good, the size is small, the weight is light, and the requirement for limited installation space is met.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation for mobile robot controllers, and more particularly to a heat dissipation structure for a mobile robot controller. Background Technology

[0002] Mobile robot controllers are the core control devices used for the intelligent transformation of mobile robot platforms. Currently, most mobile robot controllers need to connect more and more external sensors for environmental perception and measurement in order to provide more accurate movement and control. As a result, more modules need to be integrated inside the controller, which leads to the controller generating more and more heat and increasing the requirements for heat dissipation.

[0003] In mobile robot application platforms, to ensure the platform's internal waterproofing, the interior is likely to be enclosed and confined. To maximize heat dissipation efficiency within this limited space, it's necessary to fully utilize the thermal conductivity of the medium within the space. Existing mobile robot controllers, to ensure a certain level of waterproofing and dustproofing, primarily rely on internal fans to circulate internal air while simultaneously utilizing the metal casing for heat conduction or installing water cooling. However, pure shell cooling in a confined space leads to uneven heat distribution, with a large amount of heat adhering to the shell surface; water cooling requires additional devices to propel the liquid flow, and adding these devices necessitates more space.

[0004] As mobile robot controllers generate more and more heat and have higher heat dissipation requirements, existing heat dissipation structures can no longer meet the current needs of achieving good heat dissipation, small size, light weight, and adaptability to limited installation space. Utility Model Content

[0005] To address the technical problems existing in the background art, the purpose of this utility model is to propose a heat dissipation structure for a mobile robot controller, which meets the current needs of achieving good heat dissipation, small size, light weight, and adaptability to limited installation space.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat dissipation structure for a mobile robot controller includes:

[0008] The outer casing 1 is provided with an external heat dissipation fin group 12 and an external heat dissipation fan mounting part 13. The external heat dissipation fin group 12 includes a plurality of external heat dissipation fins 121.

[0009] Cooling fan 3 is installed on the external cooling fan mounting part 13. The side of cooling fan 3 away from the outer casing 1 is the air inlet surface 3A, and the side of cooling fan 3 close to the outer casing 1 is the air outlet surface 3B.

[0010] An external heat dissipation fin cover plate 4 is connected to the external heat dissipation fin group 12. The portion of the external heat dissipation fin cover plate 4 corresponding to the external cooling fan mounting part 13 is provided with an air inlet channel 41. An external heat dissipation fin duct 123 is formed between the external heat dissipation fin cover plate 4 and any two adjacent external heat dissipation fins 121. The end of the external heat dissipation fin duct 123 near the external cooling fan mounting part 13 is the air inlet, and the end of the external heat dissipation fin duct 123 away from the external cooling fan mounting part 13 is the air outlet.

[0011] Preferably, the external heat dissipation fin duct 123 is arranged around the external cooling fan mounting part 13.

[0012] Preferably, the external heat dissipation fin duct 123 extends outward in a horizontal or vertical direction from the edge of the external cooling fan mounting portion 13.

[0013] Preferably, the external cooling fan mounting part 13 is not ventilated to the inner surface of the outer casing 1.

[0014] Preferably, the height of the external heat dissipation fins 121 is higher than the installation height of the cooling fan 3.

[0015] Preferably, the air inlet channel 41 includes a mesh-like perforated structure.

[0016] Preferably, the top of the external heat dissipation fin group 12 is provided with a number of fin top internal thread mounting holes 124, and the external heat dissipation fin cover plate 4 is provided with a number of fin cover plate internal thread mounting through holes 42 corresponding one-to-one with the fin top internal thread mounting holes 124.

[0017] As a preferred option, cooling fan 3 is an ultra-thin waterproof fan.

[0018] Preferably, it also includes: a circuit board 2, which is connected to the housing 1.

[0019] Preferably, the outer casing 1 is provided with an internal heat-conducting block 11, and the circuit board 2 is provided with a main electrical heat source 21, which is in direct contact with the internal heat-conducting block 11.

[0020] The mobile robot controller heat dissipation method using the above-mentioned heat dissipation structure of the mobile robot controller has good heat dissipation effect and can meet the needs of limited installation space.

[0021] The heat dissipation method and working principle are as follows: the cooling fan 3 is turned on, and external air is drawn in through the air intake channel 41. After being accelerated by the cooling fan 3, the air is blown onto the outer surface of the outer casing 1, and then flows to the air inlet of the external heat dissipation fin channel 123. After flowing through the external heat dissipation fin channel 123, it is discharged from the air outlet of the external heat dissipation fin channel 123.

[0022] The beneficial effects of the heat dissipation structure of the mobile robot controller of this utility model are as follows:

[0023] 1. To meet the growing heat generation and higher heat dissipation requirements of mobile robot controllers, by adding ductwork, smaller fans and shorter fins can be used under the same heat dissipation capacity. It also has the following features: (1) High heat dissipation efficiency and good effect, suitable for mobile robot controllers with high heat generation; (2) Small heat dissipation structure and light weight, which will not add a lot of space and weight burden to the mobile robot controller; (3) Clever structural design, which can meet the needs of limited installation space of mobile robot controllers; (4) The design of external heat dissipation fin cover and air intake channel can ensure that the cooling fan can draw in air normally on the one hand, and protect the external heat dissipation fin group on the other hand, preventing foreign objects or human parts from damaging the external heat dissipation fin group.

[0024] 2. When the cooling fan is powered on, external air is drawn in through the air intake channel of the external heatsink fin cover, accelerated by the fan, and blown onto the outer casing surface. It then flows to the air intake of the external heatsink fin channel and is exhausted from the exhaust port. When cooling is required, the external air temperature is lower than the controller's own structure, such as the external heatsink fins and the outer casing surface. During this flow process, the external air carries away heat from these components. By continuously drawing in external air, passing it through the external heatsink fin channel, and then expelling it, heat dissipation is achieved. After the cooling fan blows air onto the casing surface, it is immediately passively guided into the channel intake. Due to Bernoulli's principle, the pressure difference between the channel intake and exhaust port causes more air to pass through, further improving cooling efficiency. In this process, most of the surface of each fin can fully contact the flowing air; increasing the number of fins and the contact area with the air further enhances cooling efficiency. Moreover, in a closed environment, the cooling fan drives the air in the closed space to circulate repeatedly, which can promote the even distribution of heat in the limited space.

[0025] 3. Using the above-mentioned heat dissipation structure of the mobile robot controller, heat dissipation of the mobile robot controller is achieved. The heat dissipation is achieved by drawing in external air through the cooling fan and allowing it to flow through the external heat dissipation fins. Compared with the existing method of relying on the internal air to be stirred by the built-in fan and the heat conduction of the casing metal, the heat dissipation efficiency is significantly improved. Under the same heat dissipation capacity, a smaller fan and a shorter fin can be used, resulting in better heat dissipation effect. Compared with the existing method of relying on the internal air to be stirred by the built-in fan and installing water cooling, there is no need to introduce bulky water cooling equipment. It is small in size and light in weight, and is more suitable for the various limited installation space requirements in the application of mobile robot controllers. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure inside the outer shell of this utility model;

[0027] Figure 2 This is a schematic diagram of the circuit board structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the outer structure of the outer shell of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the external heat dissipation fin cover, cooling fan, and outer shell of this utility model after disassembly.

[0030] Figure 5 This is a schematic diagram of the structure of the external heat dissipation fin cover, cooling fan, and outer shell of this utility model after assembly.

[0031] Figure 6 This is a schematic diagram showing the height relationship between the external heat dissipation fins and the cooling fan after assembly of this utility model;

[0032] Figure 7 This is a schematic diagram of the assembled cooling fan and housing of this utility model;

[0033] In the diagram: 1. Outer shell, 11. Inner heat-conducting block, 12. External heat dissipation fin group, 121. External heat dissipation fin exhaust passage, 122. External heat dissipation fin duct, 123. Internal threaded mounting hole on the top of the fin, 124. External cooling fan mounting part, 13. Circuit board, 21. Main electrical heat source part, 3. Cooling fan, 3A. Air inlet surface, 3B. External heat dissipation fin cover plate, 4. Air inlet channel, 41. Internal threaded mounting through hole on the fin cover plate, 42. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments 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 scope of protection of this utility model.

[0035] Example 1

[0036] like Figures 1-7 As shown, the heat dissipation structure of a mobile robot controller according to this utility model includes:

[0037] The outer casing 1 is provided with an external heat dissipation fin group 12 and an external heat dissipation fan mounting part 13. The external heat dissipation fin group 12 includes a plurality of external heat dissipation fins 121; an external heat dissipation fin exhaust passage 122 is formed between any two adjacent external heat dissipation fins 121.

[0038] Cooling fan 3 is installed on the external cooling fan mounting part 13. The side of cooling fan 3 away from the outer casing 1 is the air inlet surface 3A, and the side of cooling fan 3 close to the outer casing 1 is the air outlet surface 3B.

[0039] An external heat dissipation fin cover plate 4 is connected to the external heat dissipation fin group 12. The portion of the external heat dissipation fin cover plate 4 corresponding to the external cooling fan mounting part 13 is provided with an air inlet channel 41. An external heat dissipation fin duct 123 is formed between the external heat dissipation fin cover plate 4 and any two adjacent external heat dissipation fins 121. The end of the external heat dissipation fin duct 123 near the external cooling fan mounting part 13 is the air inlet, and the end of the external heat dissipation fin duct 123 away from the external cooling fan mounting part 13 is the air outlet.

[0040] When the cooling fan 3 is powered on, external air is drawn in through the air inlet channel 41 of the external heat dissipation fin cover 4. After being accelerated by the cooling fan 3, it is blown onto the surface of the outer casing 1, then flows to the air inlet of the external heat dissipation fin duct 123, and is exhausted from the air outlet of the external heat dissipation fin duct 123. When heat dissipation is required, the external air temperature is low, while the temperature of the controller's own structure, such as the external heat dissipation fin 121 and the surface of the outer casing 1, is high. During the entire flow process, the external air can carry away the heat from the surface of the external heat dissipation fin 121 and the surface of the outer casing 1. By continuously drawing in external air, flowing through the external heat dissipation fin duct 123, and then expelling it, the purpose of heat dissipation is achieved. After the cooling fan 3 blows air onto the surface of the outer casing 1, it is immediately passively guided into the duct air inlet. The air in the duct air inlet is affected by Bernoulli's principle, and the pressure difference between the duct air inlet and the duct air outlet causes more air to pass through the duct, which can further improve the heat dissipation efficiency. During this process, most of the surface of each fin can fully contact the flowing air. The increase in the number of fins and the increased contact area with the flowing air can further improve heat dissipation efficiency. Moreover, in a closed environment, the cooling fan 3 drives the air in the closed space to circulate back and forth, which can promote the uniform distribution of heat in the limited space.

[0041] Specifically, the external heat dissipation fin exhaust passage 122 and the external heat dissipation fin duct 123 are arranged around the external cooling fan mounting part 13.

[0042] This duct structure is equivalent to embedding the cooling fan 3 inside the external heat dissipation fin group 12, without adding extra installation space, making it more suitable for the various limited installation space requirements in mobile robot controller applications; at the same time, it facilitates the cooling fan 3 to blow air onto the surface of the outer shell 1 and immediately passively guide it into the duct air inlet, improving the efficiency of gas introduction and the overall heat dissipation effect.

[0043] Specifically, the external heat dissipation fin duct 123 extends outward in a horizontal or vertical direction from the edge of the external cooling fan mounting part 13.

[0044] This duct structure can form several finned ducts surrounding the external cooling fan mounting part 13 in four directions: up, down, left, and right. The finned ducts are also exhaust passages, which have at least three advantages: (1) It is convenient for the cooling fan 3 to blow air onto the surface of the outer casing 1 and then immediately passively guide it into the duct air inlet, thereby improving the efficiency of air introduction and the overall heat dissipation effect; (2) The horizontal or vertical direction is relative to the outer casing 1 and matches the horizontal or vertical edge of the surface of the outer casing 1. It can make full use of the surface space, set up more ducts, increase the flow channel of heat exchange gas, increase the contact area between heat exchange gas and fins and the outer surface of the outer casing 1, and improve the heat dissipation effect; (3) The horizontal or vertical external cooling finned ducts 123 are easy to process and have low manufacturing costs.

[0045] Specifically, the external cooling fan mounting part 13 is not ventilated to the inner surface of the outer casing 1.

[0046] The external cooling fan mounting part 13 is not ventilated to the inner surface of the outer casing 1. For example, the external cooling fan mounting part 13 does not have a vent hole that passes through the outer casing 1 and directly communicates with the inner cavity of the controller. This ensures that after the cooling fan 3 blows air to the surface of the outer casing 1, it is immediately passively guided into the duct inlet (instead of entering or partially entering the interior of the controller), thereby improving the airflow speed and heat dissipation efficiency. On the other hand, it also prevents external air from directly entering the inner cavity of the controller and directly damaging the internal structure or affecting the lifespan of internal components, such as introducing moisture that causes corrosion of internal components, or airflow that damages the internal electrical contacts of the controller.

[0047] Specifically, the height of the external heat dissipation fins 121 is higher than the installation height of the cooling fan 3.

[0048] With this structure, the highest point of the cooling fan 3 does not exceed the height of the fins, and it does not add extra installation space, making it more suitable for the various limited installation space requirements in mobile robot controller applications. At the same time, it can ensure that the cooling fan 3 can be completely installed under the external heat dissipation fin cover plate 4, so that the air drawn in by the cooling fan can be passively introduced into the duct more in a higher proportion and faster, reducing the loss caused by air flowing outside the duct, improving the air introduction efficiency, and ultimately improving the heat dissipation efficiency.

[0049] Specifically, the central area of ​​the external heat dissipation fin group 12 is hollowed out according to the shape of the cooling fan 3. The hollowed-out area is the external cooling fan mounting part 13. Several internally threaded mounting holes are made in the hollowed-out area (i.e., the external cooling fan mounting part 13) on the surface of the outer casing 1 for fixing the cooling fan 3, which has its own mounting holes. The A side of the cooling fan 3 is the air intake side, and the B side is the air exhaust side. The cooling fan 3 has various specifications, sizes, power, and exhaust directions. Its exhaust direction is affected by the fan blade structure. Generally, air is drawn in from the A side of the fan, accelerated by the fan blade turbine, and exhausted from the B side. The mounting holes of the cooling fan 3 are aligned one-to-one with the internally threaded mounting holes of the external cooling fan mounting part 13, and screws are passed through the mounting holes of the cooling fan 3 and the internally threaded mounting holes of the external cooling fan mounting part 13 to make them stably and reliably connected together.

[0050] Specifically, the air intake channel 41 includes a mesh-like perforated structure.

[0051] The mesh-like hollow structure has an irregular shape. On the one hand, it can ensure that the air intake surface 3A of the cooling fan 3 can draw in air normally. On the other hand, it can prevent foreign objects or human parts from being drawn into the fan, which could damage the fan or injure the human body.

[0052] Specifically, the top of the external heat dissipation fin group 12 is provided with several fin top internal thread mounting holes 124, and the external heat dissipation fin cover plate 4 is provided with several fin cover plate internal thread mounting through holes 42 corresponding one-to-one with the fin top internal thread mounting holes 124.

[0053] The connection between the external heat dissipation fin group 12 and the external heat dissipation fin cover plate 4 is a detachable connection structure. During assembly, simply pass screws through the internal thread mounting holes 42 of the fin cover plate and the internal thread mounting holes 124 on the top of the fins and tighten them to make them stably and reliably fixed together. During disassembly, simply unscrew the screws.

[0054] Specifically, cooling fan 3 is an ultra-thin waterproof fan.

[0055] Considering the application of mobile robots in humid environments or environments where they may accidentally come into contact with water, the cooling fan 3 adopts an ultra-thin waterproof fan, which has at least four advantages: (1) The application scenarios of mobile robots often require the lightest possible weight, especially for additional components such as heat dissipation structures. Using an ultra-thin waterproof fan can reduce weight. (2) The fan itself is waterproof, which reduces the corrosion of the fan by water vapor and improves its service life. (3) It reduces the amount of water vapor inhaled while inhaling external air, preventing water accumulation on the surface of the external heat dissipation fins 121 and the surface of the outer shell 1, thereby reducing the contact area between the gas and the fins and the gas flow speed, thus reducing the heat dissipation efficiency. (4) It ensures the maximum heat dissipation capacity.

[0056] Specifically, it also includes: circuit board 2, which is connected to the outer casing 1.

[0057] When circuit board 2 is powered on, the chip on circuit board 2 begins to perform computing tasks, thus generating heat. If circuit board 2 is not connected to the outer casing 1, the heat on circuit board 2 must be conducted to the outer casing 1 through the air medium, and then dissipated through the outer casing 1. In this case, the heat dissipation efficiency will be greatly reduced because of the air conduction. However, when circuit board 2 is connected to the outer casing 1, the heat on circuit board 2 no longer has to be conducted to the outer casing 1 through the air (including both direct physical contact conduction and conduction through the air medium), and the heat dissipation efficiency is greatly improved.

[0058] Specifically, the outer casing 1 is provided with an internal heat-conducting block 11, and the circuit board 2 is provided with a main electrical heat source 21, which is in direct contact with the internal heat-conducting block 11. The outer casing 1 is integrally molded, and the internal heat-conducting block 11 and the external heat dissipation fin group 12 are part of the outer casing 101 entity.

[0059] The internal heat-conducting block 11 on the inner surface of the outer casing 1 is in direct contact with the main electrical heat source 21 on the circuit board 2 inside the casing. Based on the position, number, and size of the main electrical heat source 21 on the circuit board 2, and combined with the space utilization inside the controller, the direct contact area can be increased by designing internal heat-conducting blocks 11 with appropriate position, number, and size, thereby accelerating the heat transfer from the circuit board 2 to the outer casing 1 and greatly improving the heat dissipation efficiency.

[0060] Specifically, the inner surface of the outer casing 1 is provided with two internally connected heat-conducting blocks 11, and several circuit boards are arranged inside the outer casing 1. Each of the two circuit boards has a main electrical heat source 21. When the circuit board is powered on, the chip of the main electrical heat source 21 begins to perform calculation tasks, thus generating heat. The main function of the two internally connected heat-conducting blocks 11 on the inner surface of the outer casing 1 is to directly contact and connect with each other, reducing the conduction distance of the air medium and accelerating the heat conduction of the two main electrical heat source 21.

[0061] The mobile robot controller heat dissipation method using the heat dissipation structure described above includes the following steps:

[0062] The cooling fan 3 is turned on, drawing in external air through the air intake channel 41. After being accelerated by the cooling fan 3, the air is blown onto the outer surface of the outer casing 1, and then flows to the air inlet of the external heat dissipation fin channel 123. After flowing through the external heat dissipation fin channel 123, it is discharged from the air outlet of the external heat dissipation fin channel 123.

[0063] External air, drawn in by suction, enters through the air inlet channel 41 of the external heat sink fin cover 4. Accelerated by the cooling fan 3, it is blown onto the surface of the outer casing 1, then flows to the air inlet of the external heat sink fin duct 123, and finally exits through the air outlet of the external heat sink fin duct 123. When heat dissipation is required, the external air temperature is lower than the controller's own structure, such as the external heat sink fin 121 and the surface of the outer casing 1. During this entire flow process, the external air carries away heat from the controller's own structure, including the surface of the external heat sink fin 121 and the surface of the outer casing 1. By continuously drawing in external air, flowing through the external heat sink fin duct 123, and then expelling it, heat dissipation is achieved. After the cooling fan 3 blows air onto the surface of the outer casing 1, it is immediately passively guided into the duct air inlet. Due to Bernoulli's principle, the pressure difference between the duct air inlet and outlet causes more air to pass through the duct, further improving heat dissipation efficiency. During this process, most of the surface of each fin can fully contact the flowing air. The increase in the number of fins and the increased contact area with the flowing air can further improve heat dissipation efficiency. Moreover, in a closed environment, the cooling fan 3 drives the air in the closed space to circulate back and forth, which can promote the uniform distribution of heat in the limited space.

[0064] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A heat dissipation structure for a mobile robot controller, characterized in that... include: The outer casing (1) is provided with an external heat dissipation fin group (12) and an external heat dissipation fan mounting part (13). The external heat dissipation fin group (12) includes a plurality of external heat dissipation fins (121). Cooling fan (3), the cooling fan (3) is installed on the external cooling fan mounting part (13), the side of the cooling fan (3) away from the outer shell (1) is the air inlet surface (3A), and the side of the cooling fan (3) close to the outer shell (1) is the air outlet surface (3B); An external heat dissipation fin cover plate (4) is connected to the external heat dissipation fin group (12). The portion of the external heat dissipation fin cover plate (4) corresponding to the external cooling fan mounting part (13) is provided with an air inlet channel (41). An external heat dissipation fin duct (123) is formed between the external heat dissipation fin cover plate (4) and any two adjacent external heat dissipation fins (121). The end of the external heat dissipation fin duct (123) near the external cooling fan mounting part (13) is the air inlet, and the end of the external heat dissipation fin duct (123) away from the external cooling fan mounting part (13) is the air outlet.

2. The heat dissipation structure of a mobile robot controller according to claim 1, characterized in that: The external heat dissipation fin duct (123) is arranged around the external heat dissipation fan mounting part (13).

3. The heat dissipation structure of a mobile robot controller according to claim 2, characterized in that: The external heat dissipation fin duct (123) extends outward in the horizontal or vertical direction from the edge of the external heat dissipation fan mounting part (13).

4. The heat dissipation structure of a mobile robot controller according to claim 1, characterized in that: The external cooling fan mounting part (13) is not ventilated to the inner surface of the outer casing (1).

5. The heat dissipation structure of a mobile robot controller according to claim 1, characterized in that: The height of the external heat dissipation fins (121) is higher than the installation height of the cooling fan (3).

6. The heat dissipation structure of a mobile robot controller according to claim 1, characterized in that: The air intake channel (41) includes a mesh-like perforated structure.

7. The heat dissipation structure of a mobile robot controller according to claim 1, characterized in that: The external heat dissipation fin group (12) has a number of fin top internal thread mounting holes (124) at the top, and the external heat dissipation fin cover plate (4) has a number of fin cover plate internal thread mounting through holes (42) corresponding one-to-one with the fin top internal thread mounting holes (124).

8. The heat dissipation structure of a mobile robot controller according to claim 1, characterized in that: The cooling fan (3) is an ultra-thin waterproof fan.

9. A heat dissipation structure for a mobile robot controller according to any one of claims 1-8, characterized in that... Also includes: Circuit board (2), which is connected to the outer casing (1).

10. The heat dissipation structure of a mobile robot controller according to claim 9, characterized in that: The outer casing (1) is provided with an internal heat-conducting block (11), and the circuit board (2) is provided with a main electrical heat source (21), which is in direct contact with the internal heat-conducting block (11).

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