Electromagnetic coil liquid cooling system

Abstract

The application discloses an electromagnetic coil liquid cooling system, which comprises a shell, a core and coil bodies. The core is sleeved in the shell, and the core and the shell form a closed fluid space. The coil bodies are provided in plurality, and the coil bodies are nested in the fluid space. The coil bodies divide the fluid space into multiple heat exchange flow channels. The shell is provided with an inlet, and the core is provided with an outlet. The inlet end of at least one heat exchange flow channel is communicated with the inlet, and the outlet end of at least one heat exchange flow channel is communicated with the outlet. The application can improve the heat dissipation effect of the electromagnetic coil in a limited space and under high current density, and meet the high-efficiency heat dissipation requirement of the electromagnetic coil.

Description

Technical Field

[0001] This application relates to the technical field of medical surgical robots, and more specifically, to an electromagnetic coil liquid cooling system. Background Technology

[0002] In recent years, magnetic drives have received widespread attention in the field of medical surgical robots due to their unique advantage of non-contact remote control of instruments. Currently, magnetic control systems mostly adopt permanent magnet solutions or electromagnetic solutions with a capacity of tons. The magnetic energy density of permanent magnets is limited by the permanent magnet material itself, and there is limited room for further miniaturization. The magnetic energy density of electromagnets is positively correlated with their excitation current. That is, provided that the magnetic core has not reached magnetic saturation, the larger the excitation current of a fixed-size electromagnetic coil, the stronger the magnetic field that can be generated and the larger the effective working space.

[0003] As the core actuator of a magnetic control system, the electromagnetic coil's heat dissipation performance and current carrying capacity jointly determine the system's positioning accuracy and continuous operational stability. To achieve precise surgical procedures, the electromagnetic coil needs to meet high current density requirements to ensure strong magnetic control, and a small size and close proximity to the human body to ensure magnetic control sensitivity. However, increasing the current density within a limited space while maintaining magnetic control results in a higher heat flux density per unit volume of the coil. The heat generated by the coil increases exponentially, easily leading to heat accumulation and difficulty in rapid dissipation, resulting in poor heat dissipation under high current density. Summary of the Invention

[0004] This application provides an electromagnetic coil liquid cooling system that improves the heat dissipation effect of electromagnetic coils within a limited space and under high current density, thus meeting the high-efficiency heat dissipation requirements of electromagnetic coils.

[0005] The electromagnetic coil liquid cooling system provided in this application adopts the following technical solution:

[0006] An electromagnetic coil liquid cooling system, comprising:

[0007] The outer casing is provided with a liquid inlet.

[0008] An iron core is fitted inside the outer shell, and the iron core and the outer shell form a closed fluid space; the iron core is provided with an outlet flow channel;

[0009] The coil body is provided in multiple ways, and the multiple coil bodies are nested in the fluid space. The multiple coil bodies divide the fluid space into multiple heat exchange channels. The liquid inlet end of at least one heat exchange channel is connected to the liquid inlet section, and the liquid outlet end of at least one heat exchange channel is connected to the outlet channel.

[0010] In some technical solutions, multiple coil bodies are coaxially arranged, and the distance between two adjacent coil bodies is the same.

[0011] In some technical solutions, at least two fixing members are also included, wherein at least two of the fixing members are respectively disposed at both ends of the outer casing to mate with both ends of the coil body and realize the fixing of the coil body.

[0012] In some technical solutions, the liquid inlet is configured as a liquid inlet, which is used to communicate with an external liquid supply device; the axis of the liquid inlet is parallel to the axis of the heat exchange channel, and the liquid inlet is communicated with the plurality of heat exchange channels.

[0013] In some technical solutions, multiple liquid inlets are provided, and the multiple liquid inlets are arranged in a circumferential array along the axis of the outer shell, with each liquid inlet communicating with the multiple heat exchange channels.

[0014] In some technical solutions, the liquid inlet is configured as a liquid distribution chamber, which is used to communicate with an external liquid supply device; the liquid distribution chamber is located on one side of the coil body, and each heat exchange channel is connected to the liquid distribution chamber.

[0015] In some technical solutions, the outlet channel is configured on the axis of the iron core, and a return channel is provided on the end face of the iron core away from the liquid inlet. One end of the return channel is connected to the heat exchange channel, and the other end is connected to the outlet channel.

[0016] In some technical solutions, multiple return channels are provided, and these multiple return channels are arranged radially along the outlet channel.

[0017] In some technical solutions, a flow guide bracket is also included, and at least one of the heat exchange channels is provided with the flow guide bracket; the flow guide bracket is provided with a flow guide channel to guide the coolant to form an orderly flow, and the flow guide channel is connected to the return flow channel.

[0018] In some technical solutions, the flow guide bracket is configured as a ring structure, and the flow guide channel is spirally arranged along the peripheral wall of the flow guide bracket.

[0019] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0020] Under the premise of ensuring that the magnetic field strength is not affected, multiple coil bodies are nested in the fluid space to form a compact and integrated layout structure, which compresses the overall size of the electromagnetic coil and naturally forms multiple heat exchange channels for coolant flow without additional space.

[0021] The coolant flows through the inlet and then through the fluid space, flowing along multiple pre-set heat exchange channels. The coolant completely surrounds each section of the electromagnetic coil through these channels, allowing direct contact and heat exchange with each coil body. This significantly increases the heat exchange contact area of ​​the electromagnetic coil. During its flow, the coolant carries heat and flows out along the outlet channel to the external storage device. The electromagnetic coil liquid cooling system in this application, on the one hand, utilizes convective heat exchange, enabling the coolant to quickly absorb the heat generated by the high current density of multiple coil bodies. This completely solves the problem of traditional light immersion liquid cooling, which only acts on the coil surface and cannot remove internal heat, thus meeting the high-efficiency heat dissipation requirements of electromagnetic coils under high current density. On the other hand, as the coolant flows within the heat exchange channels, it also simultaneously contacts the inner surface of the outer shell, the outer surface of the iron core, and the center surface of the iron core, continuously absorbing heat through convection, significantly improving overall heat dissipation efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic coil liquid cooling system disclosed in Embodiment 1 of this application;

[0024] Figure 2 This is a structurally disassembled schematic diagram of an electromagnetic coil liquid cooling system disclosed in Embodiment 1 of this application;

[0025] Figure 3 This is a radial cross-sectional view of an electromagnetic coil liquid cooling system disclosed in Embodiment 1 of this application;

[0026] Figure 4 This is a schematic cross-sectional view along the axial direction of an electromagnetic coil liquid cooling system disclosed in Embodiment 1 of this application;

[0027] Figure 5 This is a schematic diagram of the structure of an electromagnetic coil liquid cooling system disclosed in Embodiment 1 of this application, highlighting the heat exchange channel, the return channel, and the outlet channel.

[0028] Figure 6 This is a schematic diagram of the overall structure of an electromagnetic coil liquid cooling system disclosed in Embodiment 2 of this application;

[0029] Figure 7 This is a schematic diagram of the structure of an electromagnetic coil liquid cooling system with a prominent liquid distribution chamber, as disclosed in Embodiment 2 of this application;

[0030] Figure 8This is a radial cross-sectional view of an electromagnetic coil liquid cooling system disclosed in Embodiment 2 of this application;

[0031] Figure 9 This is a schematic diagram of the structure of the flow guide bracket of an electromagnetic coil liquid cooling system disclosed in Embodiment 2 of this application;

[0032] Figure 10 This is a schematic diagram of the structure of an electromagnetic coil liquid cooling system disclosed in Embodiment 2 of this application, highlighting the heat exchange channel, the return channel, and the outlet channel.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Outer shell; 11. Liquid inlet; 12. Liquid distribution chamber; 2. Iron core; 21. Outlet channel; 22. Return channel; 3. Fluid space; 31. Heat exchange channel; 311. Liquid inlet end; 312. Liquid outlet end; 4. Coil body; 5. Fixing component; 6. Flow guide bracket; 61. Flow guide channel; 611. Inlet port; 612. Outlet port. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] This application provides an electromagnetic coil liquid cooling system that can improve the heat dissipation effect of electromagnetic coils in a limited space and under high current density, thereby meeting the high-efficiency heat dissipation requirements of electromagnetic coils.

[0037] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be 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 a combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0038] To achieve precise surgical procedures, electromagnetic coils need to meet high current density requirements to ensure strong magnetic control, and small size with close proximity to the human body to ensure magnetic control sensitivity. While maintaining magnetic control, increasing the current density within a small, confined space leads to a greater heat flux density per unit volume of the coil. The heat generated by the coil increases exponentially, easily causing heat accumulation and difficulty in rapid dissipation, resulting in poor heat dissipation under high current density. To address these issues, this application discloses a liquid cooling system for electromagnetic coils.

[0039] Please see Figure 1 and Figure 2 This is one embodiment of the electromagnetic coil liquid cooling system in this application. The electromagnetic coil liquid cooling system includes a shell 1, an iron core 2, and a coil body 4. The iron core 2 is fitted inside the shell 1, and the iron core 2 and the shell 1 form a closed fluid space 3. Multiple coil bodies 4 are provided, and multiple coil bodies 4 are nested within the fluid space 3. The multiple coil bodies 4 divide the fluid space 3 into multiple heat exchange channels 31. It can be understood that, under the premise of ensuring that the magnetic field strength is not affected, the multiple coil bodies 4 nested in the fluid space 3 form a compact and integrated layout structure, which compresses the overall size of the electromagnetic coil and naturally forms multiple sets of heat exchange channels 31 for the flow of coolant without additional space.

[0040] The outer casing 1 is provided with a liquid inlet, and the iron core 2 is provided with an outlet channel 21. The liquid inlet end 311 of at least one heat exchange channel 31 is connected to the liquid inlet, and the liquid outlet end 312 of at least one heat exchange channel 31 is connected to the outlet channel 21. The coolant flows through the liquid inlet and then through the fluid space 3 and flows along multiple preset heat exchange channels 31. The coolant completely surrounds each section of the electromagnetic coil through the heat exchange channels 31, and can directly contact each coil body 4 to carry out heat exchange, which greatly increases the heat exchange contact area of ​​the electromagnetic coil. During the flow, the coolant after heat exchange can carry heat and flow out along the outlet channel 21 to the external liquid storage device.

[0041] The electromagnetic coil liquid cooling system in this application, on the one hand, enables the coolant to quickly absorb the heat generated by the high current density of multiple coil bodies 4 through convective heat transfer, completely solving the problem that traditional light immersion liquid cooling can only act on the surface of the coil and cannot remove internal heat, thus meeting the high-efficiency heat dissipation requirements of electromagnetic coils under high current density; on the other hand, when the coolant flows in the heat exchange channel 31, it will also simultaneously contact the inner surface of the outer shell 1, the outer surface of the iron core 2 and the center surface of the iron core 2, and continuously absorb heat through convective heat dissipation, significantly improving the overall heat dissipation efficiency.

[0042] Please see Figure 3 and Figure 4 In this embodiment, multiple coil bodies 4 are coaxially arranged, and the distance between two adjacent coil bodies 4 is the same, that is, the cross-section along the axial direction of the electromagnetic coil (e.g., Figure 4 As shown), each heat exchange channel 31 has the same height. By arranging multi-level nested coil bodies 4 at even intervals, the fluid space 3 is finely divided, allowing the coolant to flow evenly through each heat exchange channel 31 and ensuring pressure balance and flow rate stability among each heat exchange channel 31, thereby improving heat exchange efficiency and temperature field uniformity.

[0043] Please continue reading. Figure 2 and Figure 4 To ensure the installation stability of each coil body 4, the electromagnetic coil liquid cooling system also includes at least two fixing members 5. At least two fixing members 5 are respectively disposed at both ends of the outer casing 1 to mate with the two ends of the coil body 4, thereby fixing the coil body 4. Similarly, in other embodiments, four, six, or eight fixing members 5 can be provided to further improve the installation stability of the coil body 4.

[0044] The fixing component 5 is made of metal and has multiple partitions. The curvature of the partitions matches the curvature of the coil, and the distance between adjacent partitions matches the thickness of the coil body 4. During installation, the fixing component 5 inserts the partitions into the heat exchange channel 31, causing adjacent partitions to engage with the coil body 4, thereby limiting the radial direction of the electromagnetic coil. This also ensures a stable connection between the coil body 4 and the outer surface of the iron core 2, between the coil bodies 4 themselves, and between the coil body 4 and the inner surface of the outer shell 1. By connecting at least two fixing components 5 to both ends of the coil body 4, the ends of the coil body 4 are constrained, thereby limiting the axial direction of the electromagnetic coil and fixing the coil body 4. The compact fixing component 5 ensures the precise and displacement-free position of the coil body 4 and guarantees the stability of the cooling channel while avoiding the occupation of unnecessary space.

[0045] For ease of understanding, the following description uses an embodiment with three coil bodies 4 and six fixing members 5 as an example. The diameters of the three coil bodies 4, from smallest to largest, are the first coil body 4, the second coil body 4, and the third coil body 4. These three coil bodies 4 are coaxially nested within the fluid space 3, and the spacing between adjacent coil bodies 4 is the same. Heat exchange channels 31 are provided between the iron core 2 and the first coil body 4, between the first coil body 4 and the second coil body 4, between the second coil body 4 and the third coil body 4, and between the third coil body 4 and the inner wall of the outer shell 1. These heat exchange channels 31 are annular channels. When the coolant flows within the heat exchange channels 31, in addition to exchanging heat with the coil bodies 4 and carrying away their heat, it also simultaneously contacts the inner surface of the outer shell 1 and the outer surface of the iron core 2 for heat exchange, simultaneously carrying away the heat from the iron core 2 and conducting it to the outer shell 1.

[0046] Six fixing members 5 are respectively disposed on both sides of the coil body 4, with multiple fixing members 5 disposed on the same side arranged along the circumference of the coil body 4. It is worth mentioning that, while the fixing members 5 stabilize the coil position and ensure the stability of the flow channel, the coil body 4 and the multiple fixing members 5 are in close contact, so that heat is conducted along the coil body 4 towards the fixing members 5 with lower temperature, and the heat of the coil body 4 can also be transferred to the outer shell 1 and the iron core 2. That is, the outer shell 1 not only undertakes the task of protecting and supporting the overall structure, but its inner wall can also contact the coolant to conduct heat, and then, based on the large surface area of ​​the outer shell 1, the heat is quickly diffused to the surrounding area; the heat transferred to the iron core 2 is carried away by the coolant through the outlet flow channel 21. Based on these two directional heat conduction paths, the temperature control of the electromagnetic coil can be further assisted.

[0047] This configuration eliminates the need for additional heat dissipation components, simplifying the structure while increasing the heat dissipation area. It is compatible with various cooling media such as silicone oil and ethylene glycol solution, allowing for stable circulation of different media through a unified flow channel structure. This eliminates the need to adjust the core size and structure based on media characteristics, significantly improving the solution's adaptability and application scope, effectively broadening its applicability. The heat transferred to the outer casing 1...

[0048] Please see Figure 1 and Figure 4 In order to realize the liquid inlet function of the heat exchange channel 31, in some embodiments, the liquid inlet is configured as a liquid inlet 11, which is used to communicate with an external liquid supply device. The axis of the liquid inlet 11 is parallel to the axis of the heat exchange channel 31, and the liquid inlet 11 is connected to multiple heat exchange channels 31.

[0049] For ease of understanding, it should be noted that in conventional radial liquid inlet (where the axis of the inlet 11 is perpendicular to the axis of the heat exchange channel 31), the high-speed fluid directly rushes towards the channel region directly opposite the inlet 11, forming a local high-pressure zone, while the region far from the inlet 11 experiences a low-pressure zone due to momentum dissipation, resulting in an exponential decrease in flow distribution. Secondly, the vertical injection causes the fluid to rotate sharply by 90°, generating strong centrifugal force and backflow vortices, which not only increases the local drag coefficient but also causes energy dissipation. In this application, multiple heat exchange channels 31 are arranged concentrically, each with a different radius of curvature. If radial liquid inlet is used, the flow distribution between the outer and inner heat exchange channels 31 will be uneven.

[0050] In this application, by aligning the axis of the inlet 11 parallel to the axis of the heat exchange channel 31, the inlet 11 acts as an axial main pipe, ensuring uniform pressure distribution along the flow path. With each annular channel inlet located on the same pressure surface, the fluid maintains its original axial momentum and is evenly distributed across the multiple heat exchange channels 31. This eliminates pressure differential-driven unevenness caused by positional differences and momentum bias due to radial impact, thus improving the uniformity of the flow field distribution. Simultaneously, the annular nested structure significantly increases the heat exchange area within a limited space. Combined with the uniform flow distribution characteristics of the axial inlet, this significantly improves heat exchange efficiency and temperature field uniformity while reducing flow resistance losses. Notably, by increasing the number of annular channel layers, the heat exchange area can be linearly expanded, and the axial inlet structure does not require a redesigned distribution system, demonstrating excellent modular expansion capabilities.

[0051] Compared to the setting where each heat exchange channel 31 is connected to a separate liquid inlet 11, the setting where the liquid inlet 11 is connected to multiple heat exchange channels 31 can cooperate with the uniform flow distribution of axial liquid inlet to form an efficient heat homogenization network. Secondly, the axial unified liquid inlet method achieves distribution through internal geometry, which is not affected by external piping system disturbances, and the distribution stability is greatly improved.

[0052] Furthermore, in some optional embodiments of the above examples, multiple liquid inlets 11 are provided, and the multiple liquid inlets 11 are arranged in a circumferential array along the axis of the outer shell 1, with each liquid inlet 11 communicating with multiple heat exchange channels 31. In this embodiment, four liquid inlets 11 are provided, and the four liquid inlets 11 are arranged in a cross shape. It can be understood that the arrangement of multiple liquid inlets 11 allows the fluid to enter the heat exchange channel 31 synchronously from multiple circumferential directions. The momentum direction of the fluid flowing into each liquid inlet 11 is symmetrically distributed on the circumference. After vector superposition, the circumferential components cancel each other out, leaving only the axial dominant flow, fundamentally suppressing the circumferential circulation or vortex bias that may be generated by a single liquid inlet 11; at the same time, the multi-source liquid supply makes the circumferential pressure gradient of each heat exchange fluid approach zero, and the inlet pressure of each heat exchange channel 31 at any position in the circumferential direction is strictly consistent, ensuring the synchronicity and uniformity of the coolant entering the internal channel from the source, and avoiding local extreme high temperature points caused by distribution imbalance.

[0053] Please see Figure 6 and Figure 7To enable the liquid inlet function of the heat exchange channel 31, in some other embodiments, the liquid inlet is configured as a liquid distribution chamber 12. The liquid distribution chamber 12 has a liquid inlet for communication with an external liquid supply device. The liquid distribution chamber 12 is located on one side of the coil body 4, along the axial direction of the outer shell 1. The orthographic projection of the liquid distribution chamber 12 coincides with the orthographic projection of the multiple heat exchange channels 31, ensuring that each heat exchange channel 31 is connected to the liquid distribution chamber 12. It can be understood that the arrangement of the liquid distribution chamber 12 merges the originally dispersed multiple circumferentially arranged liquid inlets 11 into a single main inlet. The liquid distribution chamber 12 acts as a distribution center before the coolant enters the heat exchange channel 31 area, distributing the coolant to each heat exchange channel 31 to ensure that each heat exchange channel 31 receives an appropriate amount of coolant. Secondly, it simplifies the external piping connection of the liquid cooling system, reduces the potential risk of leakage at the connection of multiple liquid inlets 11, and further ensures that the coolant enters the liquid cooling system with a more stable and uniform initial pressure.

[0054] Please see Figure 4 or Figure 5 In this embodiment, the outlet channel 21 is configured on the axis of the iron core 2, that is, the outlet channel 21 is arranged in the middle of the iron core 2. After heat exchange, the coolant flows into the outlet channel 21 along the heat exchange channel 31. The outlet end of the outlet channel 21 is connected to the liquid chiller, which cools the coolant after heat exchange, preparing it for the next cooling cycle and ensuring the continuous and stable operation of the system. It is worth mentioning that the outlet channel 21 is responsible for both coolant discharge and the removal of heat from the iron core 2 during the flow of coolant, directly cooling the iron core 2 and preventing its temperature from becoming too high, which would cause a decrease in magnetic field strength.

[0055] Please see Figure 5 and Figure 10 To ensure the coolant flows quickly into the outlet channel 21 after heat exchange, avoiding fluid dead zones and improving heat dissipation efficiency, a return channel 22 is provided on the end face of the iron core 2 away from the liquid inlet. One end of the return channel 22 is connected to the heat exchange channel 31, and the other end is connected to the outlet channel 21. After heat exchange, the coolant flows naturally along the length of the heat exchange channel 31 to the return channel 22, and then flows into the outlet channel 21 in the middle of the iron core 2.

[0056] Please see Figure 5 In one optional embodiment of the above example, multiple return channels 22 are provided, and these multiple return channels 22 are arranged radially along the outlet channel 21. The radial return channels 22 radiate outward from the axis of the outlet channel 21. Coolant entering from any of the circumferential array inlets 11 flows through any heat exchange channel 31 and then through the corresponding radial return channels to the outlet channel 21. The total flow length is equal, which fundamentally eliminates the time lag and heat unevenness caused by flow differences, avoids fluid dead zones, and improves heat dissipation efficiency.

[0057] Please see Figure 8 and Figure 9 In some embodiments, in order to enable the coolant to absorb the heat generated by the coil body 4 during operation more fully, the electromagnetic coil liquid cooling system also includes a flow guide 6, and at least one heat exchange channel 31 is provided with a flow guide 6; the flow guide 6 is provided with a flow guide channel 61 to guide the coolant to form an orderly flow, and the flow guide channel 61 is connected to the return channel 22.

[0058] Please continue reading. Figure 9 In an optional embodiment of the above example, the flow guide bracket 6 is configured as a ring structure, and the flow guide channel 61 is spirally arranged along the periphery of the flow guide bracket 6. In this embodiment, the flow guide channel 61 is formed by removing a portion of the flow guide bracket 6 along the spiral direction. The flow guide bracket 6 is preferably a spiral bracket, and the flow guide bracket 6 is assembled inside each independent flow channel. The spiral structure can guide the coolant to form an orderly spiral flow in the flow channel. Compared with a straight flow guide structure, it can minimize the pressure loss of the coolant during the flow process, avoid the increase in system energy consumption or unstable flow due to excessive pressure drop, and significantly extend the contact time and contact area between the coolant and the coil surface.

[0059] Please continue reading. Figure 9 and Figure 10 In this embodiment, since the flow channel 61 has an inlet port 611 and an outlet port 612, the inlet port 611 of the flow channel 61 is connected to the liquid inlet section, and the outlet port 612 of the flow channel 61 is connected to the return flow channel 22. The coolant enters through the inlet port 611 of the guide channel 61 and fully exchanges heat with the coil body 4 along the spiral guide channel 61. By guiding the coolant to form an orderly spiral flow in the channel, the coolant can more fully absorb the heat generated by the coil during operation, greatly improving the local heat exchange efficiency of a single channel and thus optimizing the heat dissipation effect of the entire system. After heat exchange, the coolant flows into the return channel 22 through the outlet port 612 of the guide channel 61. Since there is one outlet port 612 of the guide channel 61, there is also a corresponding return channel 22, and the return channel 22 is set to correspond to the outlet port 612 of the guide channel 61, so that the coolant after heat exchange can quickly flow out of the electromagnetic coil through the return channel 22 and the outlet channel 21.

[0060] It is worth mentioning that while guiding the flow, the flow guide bracket 6 also forms a precise structural fit with the fixing part 5 on the inner surface of the outer shell 1. Through the spatial restriction effect of the two, the flow path of the coolant is strictly constrained, ensuring that it can only be discharged through the return flow channel 22. This effectively avoids the occurrence of fluid dead zones where coolant stagnates in the heat exchange channel 31, further ensuring the smoothness and heat exchange uniformity of the entire liquid cooling system.

[0061] It should be noted that the addition of terms such as "first," "second," and "third" to some technical feature names in this application is merely to distinguish similar objects and is not intended to limit quantity, priority, or other limitations. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0062] The various embodiments in this specification are described in a progressive or parallel manner, with each embodiment focusing on its differences from other embodiments. Similar or undescribed parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electromagnetic coil liquid cooling system, characterized by, include: The outer casing is provided with a liquid inlet. An iron core is fitted inside the outer shell, and the iron core and the outer shell form a closed fluid space; the iron core is provided with an outlet flow channel; The coil body is provided in multiple ways, and the multiple coil bodies are nested in the fluid space. The multiple coil bodies divide the fluid space into multiple heat exchange channels. The liquid inlet end of at least one heat exchange channel is connected to the liquid inlet section, and the liquid outlet end of at least one heat exchange channel is connected to the outlet channel.

2. The electromagnetic coil liquid cooling system according to claim 1, characterized in that, Multiple coil bodies are coaxially arranged, and the distance between two adjacent coil bodies is the same.

3. The electromagnetic coil liquid cooling system according to claim 1 or 2, characterized in that, It also includes at least two fasteners, wherein at least two of the fasteners are respectively disposed at both ends of the outer casing to mate with both ends of the coil body to fix the coil body.

4. The electromagnetic coil liquid cooling system according to claim 1, characterized in that, The liquid inlet is configured as a liquid inlet, which is used to communicate with an external liquid supply device; the axis of the liquid inlet is parallel to the axis of the heat exchange channel, and the liquid inlet is connected to the plurality of heat exchange channels.

5. The electromagnetic coil liquid cooling system according to claim 4, characterized in that, The liquid inlet is provided in multiple ways, and the multiple liquid inlets are arranged in a circumferential array along the axis of the outer shell. Each liquid inlet is connected to the multiple heat exchange channels.

6. The electromagnetic coil liquid cooling system according to claim 1, characterized in that, The liquid inlet is configured as a liquid distribution chamber, which is used to communicate with an external liquid supply device; the liquid distribution chamber is located on one side of the coil body, and each heat exchange channel is connected to the liquid distribution chamber.

7. The electromagnetic coil liquid cooling system according to claim 1, characterized in that, The outlet channel is configured on the axis of the iron core, and a return channel is provided on the end face of the iron core away from the liquid inlet. One end of the return channel is connected to the heat exchange channel, and the other end is connected to the outlet channel.

8. The electromagnetic coil liquid cooling system according to claim 7, characterized in that, The return flow channel is provided in multiple ways, and the multiple return flow channels are arranged radially along the outlet flow channel.

9. The electromagnetic coil liquid cooling system according to claim 7, characterized in that, It also includes a flow guide bracket, and at least one of the heat exchange channels is provided with the flow guide bracket; the flow guide bracket is provided with a flow guide channel to guide the coolant to form an orderly flow, and the flow guide channel is connected to the return flow channel.

10. The electromagnetic coil liquid cooling system according to claim 9, characterized in that, The flow guide bracket is configured as a ring structure, and the flow guide channel is spirally arranged along the peripheral wall of the flow guide bracket.

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