An electromagnetic coil cooling device

Abstract

This application discloses an electromagnetic coil cooling device, comprising a shell, an iron core, a coil body, and a support member. The shell is fitted over the iron core, and the iron core and the shell form a closed fluid space. The coil body is fitted over the outer peripheral wall of the iron core and is located within the fluid space to divide the fluid space into at least two heat exchange channels. The heat exchange channels are used to communicate with external circulation equipment to drive the cooling medium to flow within the heat exchange channels. The support member is disposed within the heat exchange channels and provides rigid support for the coil body. This application can improve cooling efficiency while enhancing the rigidity of the coil body under high current density, thereby improving the stability of the magnetic control system.

Description

Technical Field

[0001] This application relates to the technical field of magnetically controlled robots, and more specifically, to an electromagnetic coil cooling device. Background Technology

[0002] Magnetic-controlled robotics technology has shown promising application prospects in minimally invasive interventional surgery in recent years. This technology generates a high-intensity, high-precision, and rapidly adjustable magnetic field through an external electromagnetic coil, which can precisely drive magnetic instruments inside the patient's body without physical contact, enabling precise catheter navigation and improving surgical accuracy while reducing patient trauma.

[0003] To achieve a high-intensity, high-response magnetic field within a limited space, coils typically employ a structure of tightly wound multi-layered wires and are supplied with a large current. To achieve a strong magnetic field, the overall coil size is relatively long. When arranged horizontally or at an angle, the coil's own weight can cause deformation and sagging in the middle. Existing technologies use potting to increase rigidity. Under high-power operation, the multi-layered potted coil structure lengthens the heat conduction path and increases thermal resistance. Localized hot spots easily form in the middle of the coil, and the heat generated during operation is mainly concentrated internally. Since potting materials are mostly epoxy resins with poor thermal conductivity, the potted coil structure adds an extra layer of thermal resistance, making it even more difficult to effectively dissipate heat. This can easily cause changes in coil resistance, thus affecting the stability of the magnetic control system. Utility Model Content

[0004] This application provides an electromagnetic coil cooling device that can improve cooling efficiency and enhance the rigidity of the coil body under high current density, thereby improving the stability of the magnetic control system.

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

[0006] An electromagnetic coil cooling device includes:

[0007] shell;

[0008] An iron core, wherein the outer shell is fitted over the iron core, and the iron core and the outer shell form a closed fluid space;

[0009] A coil body is sleeved on the outer peripheral wall of the iron core, and the coil body is located in the fluid space to divide the fluid space into at least two heat exchange channels. The heat exchange channels are used to communicate with external circulation equipment to drive the cooling working fluid to flow in the heat exchange channels.

[0010] A support member is disposed within the heat exchange channel and is used to provide rigid support for the coil body.

[0011] In some technical solutions, multiple coil bodies are provided, and the multiple coil bodies are coaxial and nested, with the distance between two adjacent coil bodies being the same, and the multiple coil bodies dividing the fluid space into multiple heat exchange channels.

[0012] In some technical solutions, the radial thickness of the plurality of coil bodies gradually decreases along the direction from the fluid space to the outer casing and / or the iron core.

[0013] In some technical solutions, the support member includes multiple skeletons, the length direction of the skeleton is consistent with the length direction of the coil body, and at least one skeleton is provided in each heat exchange channel.

[0014] In some technical solutions, the support includes multiple fixing blocks, which are fixedly connected to the inner wall of the outer shell; wherein at least two of the fixing blocks are respectively disposed at both ends of the outer shell to limit the axial and radial displacement of the coil body.

[0015] In some technical solutions, the end face of the fixing block facing the coil body is provided with multiple baffles that are inserted into the heat exchange channel, and an installation space is formed between adjacent baffles, each installation space being used to install one coil body;

[0016] The curvature of the mounting space is the same as the curvature of the coil body corresponding to it, and the thickness of the mounting space is the same as the radial thickness of the coil body corresponding to it.

[0017] In some technical solutions, each heat exchange channel is provided with multiple spaced-apart skeletons, and the multiple skeletons are all fixedly connected to the same coil body;

[0018] Multiple fixing blocks are disposed at both ends of the coil body, and multiple partitions are spaced apart in the same heat exchange channel. The two ends of each frame correspond one-to-one with and are fixedly connected to the partitions in the same heat exchange channel.

[0019] In some technical solutions, the outer shell is provided with a liquid inlet, the iron core is provided with an outlet channel, at least one liquid inlet end of the heat exchange channel is connected to the liquid inlet, and at least one liquid outlet end of the heat exchange channel is connected to the outlet channel.

[0020] In some technical solutions, the axis of the liquid inlet is parallel to the axis of the heat exchange channel. Multiple liquid inlets are provided, and the multiple liquid inlets are arranged in a circumferential array along the axis of the outer shell. Each liquid inlet is connected to multiple heat exchange channels.

[0021] 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.

[0022] As can be seen from the above technical solutions, this application has the following advantages:

[0023] The coil body is installed between the iron core and the outer shell. At least two annular heat exchange channels are formed between the coil body, the outer wall of the iron core, and the inner wall of the outer shell. This reduces the overall size of the electromagnetic coil while naturally forming heat exchange channels for the cooling medium to flow without additional space. On the one hand, the heat exchange channels provide flow space for the cooling medium, allowing it to directly contact the coil body and quickly absorb the heat generated by the high current density of the coil body. This removes the heat generated and accumulated inside the coil body, improving cooling efficiency and meeting the requirement of high-efficiency heat exchange under high current density. On the other hand, the heat exchange channels provide installation space for the support components, which provide rigid support for the coil body, preventing deformation and sagging due to the coil body's own weight. This enhances the rigidity of the coil body, ensures the uniformity of the magnetic field distribution, and reduces the possibility of narrowing of the heat exchange channels and increased flow resistance, thereby improving the stability of the magnetic control system. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in 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.

[0025] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic coil cooling device disclosed in an embodiment of this application;

[0026] Figure 2 This is an exploded view of the structure of an electromagnetic coil cooling device disclosed in an embodiment of this application;

[0027] Figure 3 This is a cross-sectional view of the structure of an electromagnetic coil cooling device disclosed in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram showing the heat exchange channel of an electromagnetic coil cooling device disclosed in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram showing the outlet flow channel and the confluence flow channel of an electromagnetic coil cooling device disclosed in an embodiment of this application;

[0030] Figure 6This is a structural schematic diagram of an electromagnetic coil cooling device disclosed in an embodiment of this application, highlighting the coil body and the support component;

[0031] Figure 7 This is a simulation diagram of the thermal-fluid coupling of an electromagnetic coil cooling device disclosed in an embodiment of this application, highlighting the coil body.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Outer shell; 11. Liquid inlet; 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. Support component; 51. Frame; 52. Fixing block; 521. Partition plate; 522. Installation space. Detailed Implementation

[0034] The present application will be further described in detail below with reference to the accompanying drawings.

[0035] This application provides an electromagnetic coil cooling device that can improve cooling efficiency and enhance the rigidity of the coil body under high current density, thereby improving the stability of the magnetic control system.

[0036] 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.

[0037] To achieve a strong magnetic field, the overall size of the coil is relatively long. When arranged horizontally or at an angle, the weight of the coil itself can cause deformation and sagging in the middle. Existing technology uses potting to increase rigidity. Under high-power operation, the multi-layered potted coil structure lengthens the heat conduction path and increases thermal resistance. Localized hot spots easily form in the middle of the coil, and the heat generated during operation is mainly concentrated internally. Since the potting material is mostly epoxy resin or other materials with poor thermal conductivity, the potted coil structure adds another layer of thermal resistance, making it even more difficult to effectively dissipate heat. This can easily cause changes in coil resistance, thus affecting the stability of the magnetic control system.

[0038] To resolve the above technical issues, please refer to [link / reference]. Figure 1 and Figure 2 This is one embodiment of the electromagnetic coil cooling device in this application. The electromagnetic coil cooling device includes a housing 1, an iron core 2, a coil body 4, and a support member 5.

[0039] In this embodiment, the outer shell 1 adopts a hollow cylindrical structure. The outer shell 1 is fitted over the iron core 2, and the iron core 2 axially penetrates the entire outer shell 1. Both ends of the iron core 2 are tightly fitted to the inner wall of the outer shell 1 and sealed by a sealing structure. The iron core 2 and the outer shell 1 form a closed fluid space 3, which is used to prevent leakage of the cooling medium during high-pressure circulation. The coil body 4 is fitted over the outer peripheral wall of the iron core 2 and is located within the fluid space 3 to divide the fluid space 3 into at least two heat exchange channels 31. The heat exchange channels 31 are used to communicate with external circulation equipment to drive the cooling medium to flow within the heat exchange channels 31. The support member 5 is disposed within the heat exchange channels 31 and is used to provide rigid support for the coil body 4.

[0040] Understandably, the coil body 4 is installed between the iron core 2 and the outer shell 1. At least two annular heat exchange channels 31 are formed between the coil body 4 and the outer wall of the iron core 2 and the inner wall of the outer shell 1. This compresses the overall size of the electromagnetic coil while naturally forming heat exchange channels 31 for the flow of cooling medium without the need for additional space, ensuring the miniaturization and high integration of the electromagnetic coil. On the one hand, the heat exchange channels 31 provide flow space for the flow of cooling medium, allowing the cooling medium to directly contact the coil body 4 and quickly absorb the heat generated by the high current density of the coil body 4, thereby removing the heat generated and accumulated inside the coil body 4, improving cooling efficiency, and meeting the requirement of high-efficiency heat exchange under high current density. On the other hand, the heat exchange channels 31 provide installation space 522 for the support member 5. The support member 5 provides rigid support for the coil body 4, preventing deformation and sagging caused by the weight of the coil body 4, thereby enhancing the rigidity of the coil body 4, ensuring the uniformity of the magnetic field distribution, and reducing the possibility of narrowing of the heat exchange channels 31 and increased flow resistance, thus improving the stability of the magnetic control system.

[0041] After the cooling medium flows into the heat exchange channel 31 through the external circulation device, it can directly contact the coil body 4 and carry out heat exchange while flowing along the length of the heat exchange channel 31. The cooling medium completely surrounds each section of the coil body 4, which greatly increases the heat exchange area of ​​the coil body 4 and quickly absorbs the heat generated by the high current density in the central area of ​​the coil body 4. This solves the problem that traditional light immersion liquid cooling can only act on the surface of the coil and cannot remove the internal heat. After heat exchange, the cooling medium can carry the heat into the external circulation device for cooling, and then the cooling medium is circulated through the external circulation device.

[0042] Please see Figure 3 and Figure 4Multiple coil bodies 4 are provided, and these coil bodies 4 are coaxially and nested, with the same distance between adjacent coil bodies 4. The multiple coil bodies 4 divide the fluid space 3 into multiple heat exchange channels 31, which are cross-sections along the axial direction of the coil bodies 4, and each heat exchange channel 31 has the same height. Through the multi-level nested coil bodies 4, which are spaced apart and uniformly arranged, the fluid space 3 is finely divided, allowing the cooling medium to flow uniformly through each heat exchange channel 31, ensuring pressure balance and flow rate stability among the heat exchange channels 31, and improving heat exchange efficiency and temperature field uniformity.

[0043] Furthermore, along the direction from the fluid space 3 to the outer shell 1 and / or the iron core 2, the radial thickness of the plurality of coil bodies 4 gradually decreases, that is, the radial thickness of the coil body 4 is smaller the closer it is to the outer shell 1 and / or the iron core 2. In some embodiments, the radial thickness of the coil body 4 is smaller the closer it is to the outer shell 1 along the direction from the fluid space 3 to the outer shell 1; in other embodiments, the radial thickness of the coil body 4 is smaller the closer it is to the iron core 2 along the direction from the fluid space 3 to the iron core 2. In this embodiment, the radial thickness of the plurality of coil bodies 4 gradually decreases along both the direction from the fluid space 3 to the outer shell 1 and the direction of the iron core 2, that is, the radial thickness of the plurality of coil bodies 4 forms a structural feature that is thick in the middle and thin on both sides.

[0044] For ease of understanding, the following embodiment of this application uses three independent annular coil bodies 4 as an example. In the multiple coil bodies 4, along the direction from the iron core 2 to the outer shell 1 (from the inside to the outside), there are sequentially a first coil, a second coil, and a third coil. The second coil is significantly thicker than the first and third coils, thus forming a structure that is thicker in the middle and thinner on both sides, thereby increasing the overall magnetic field strength of the electromagnetic coil. In some optional embodiments, the radial thicknesses of the first and third coils can be set to be the same or different.

[0045] The three coil bodies 4, the iron core 2, and the outer shell 1 are all coaxially arranged with the central axis of the iron core 2 as the axis. Since the iron core 2, the coil bodies 4, and the outer shell 1 have different sizes and the sizes gradually increase, multiple annular gaps are naturally formed between the outer peripheral wall of the iron core 2 and the surfaces adjacent to the first coil, the first coil and the second coil, the second coil and the third coil, and the third coil and the inner wall of the outer shell 1. These gaps are the heat exchange channels 31. When the cooling medium flows in the heat exchange channels 31, it not only exchanges heat with the coil bodies 4, but also contacts the inner surface of the outer shell 1 and the outer surface of the iron core 2. It continuously absorbs heat through convection to further improve the overall heat dissipation efficiency.

[0046] Please see Figure 1 and Figure 3To enable the liquid inlet and outlet functions of the heat exchange channels 31, the outer shell 1 is provided with a liquid inlet 11, and the iron core 2 is provided with an outlet channel 21. At least one liquid inlet end 311 of the heat exchange channel 31 is connected to the liquid inlet 11, and at least one liquid outlet end 312 of the heat exchange channel 31 is connected to the outlet channel 21. Specifically, in this embodiment, the heat exchange channels 31 are isolated from each other and not connected. One end of each heat exchange channel 31 is connected to the liquid inlet 11, and the other end is connected to the outlet channel 21. In other optional embodiments, the heat exchange channels 31 are connected to each other, with the outermost heat exchange channel 31 connected to the liquid inlet 11 and the innermost heat exchange channel 31 connected to the outlet channel 21.

[0047] Please see Figure 1 and Figure 5 The axis of the liquid inlet 11 is parallel to the axis of the heat exchange channel 31. In some embodiments, only one liquid inlet 11 is provided, and one liquid inlet 11 communicates with multiple heat exchange channels 31. In this embodiment, 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. Each liquid inlet 11 communicates with multiple heat exchange channels 31. Since the multiple heat exchange channels 31 are concentric rings without interruption, each heat exchange channel 31 has a different radius of curvature. If radial liquid inlet is used, the flow distribution between the outer heat exchange channel 31 and the inner heat exchange channel 31 will be uneven.

[0048] Understandably, by aligning the inlet 11 with 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 on the same pressure surface, the cooling medium 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, removes momentum bias caused by radial impact, and improves the uniformity of the flow field distribution. Simultaneously, the annular sleeve 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.

[0049] It is worth mentioning that by increasing the number of annular flow channel layers, the heat exchange area can be linearly expanded, and the axial liquid inlet structure does not require redesigning the distribution system, exhibiting good modular expansion performance. After entering from the four inlets, the cooling medium can be evenly distributed to each flow channel, effectively removing the heat generated by each sub-coil and avoiding excessive local temperature rise.

[0050] Please continue reading. Figure 1In 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 four liquid inlets 11, which are evenly distributed at equal angles to each other in the four directions of top, bottom, left, and right, allow the cooling medium to enter the heat exchange channel 31 synchronously from multiple directions in the circumference. The momentum direction of the cooling medium flowing into each liquid inlet 11 is symmetrically distributed in the circumference. After vector superposition, the circumferential components cancel each other out, leaving only the axial dominant flow, which fundamentally suppresses 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 channel 31 approach zero, and the inlet pressure of each heat exchange channel 31 at any position in the circumference is strictly consistent, ensuring the synchronicity and uniformity of the cooling medium entering the internal channel from the source, avoiding local extreme high temperature points caused by distribution imbalance, and improving the uniformity of temperature distribution.

[0051] After heat exchange, the cooling medium flows into the outlet channel 21 along the heat exchange channel 31. The outlet end of the outlet channel 21 is connected to the external circulation equipment. The external circulation system cools the cooling medium after heat exchange, preparing it for the next cooling cycle and ensuring the continuous and stable operation of the system.

[0052] Please continue reading. Figure 5 In this embodiment, the outlet channel 21 is configured on the axis of the iron core 2. The outlet channel 21 is responsible for discharging the cooling working fluid, and at the same time, it can carry away the heat from the center of the iron core 2 during the flow of the cooling working fluid, directly cooling the iron core 2 and preventing its temperature from becoming too high, which would cause the magnetic field strength to decrease.

[0053] To ensure the cooling medium flows rapidly 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 11. 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 cooling medium 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.

[0054] Furthermore, multiple return channels 22 are provided, arranged radially along the outlet channel 21. The radial return channels 22 radiate outward from the axis of the outlet channel 21. Cooling fluid entering from any of the circular 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.

[0055] Please see Figure 6The support member 5 is made of metal and includes multiple skeletons 51. The length direction of the skeletons 51 is consistent with the length direction of the coil body 4. At least one skeleton 51 is provided in each heat exchange channel 31. In some embodiments, the skeletons 51 can be spiral-shaped, with one skeleton 51 provided in each heat exchange channel 31. By providing guide grooves on the skeletons 51, the cooling medium can be allowed to flow, and the cooling medium can be guided to form an orderly spiral flow in the heat exchange channel 31.

[0056] In this embodiment, the skeleton 51 is preferably linear, and multiple skeletons 51 are arranged at intervals in each heat exchange channel 31. All the skeletons 51 are fixedly connected to the same coil body 4. Specifically, four skeletons 51 are evenly arranged at intervals in each heat exchange channel 31, and the four skeletons 51 in each heat exchange channel 31 are arranged in a cross shape. The four skeletons 51 in each heat exchange channel 31 are bonded and fixed to the same coil body 4 with thermally conductive adhesive.

[0057] The heat exchange channel 31 is equipped with multiple axially continuous metal skeletons 51, which not only provide rigid support for each coil body 4 to suppress sagging deformation and ensure structural stability, but also laterally conduct heat from the coil body 4 to the coil bodies 4 on both sides, the iron core 2, or the outer shell 1. This facilitates heat conduction between components, resulting in a more uniform overall temperature distribution within the coil body 4 and achieving temperature balance. Furthermore, the skeletons 51 guide the flow of the cooling medium, ensuring it reaches the end of the heat exchange channel 31 effectively even at low flow rates without increasing flow resistance. This allows the medium to smoothly enter the return channel 22 and flow into the outlet channel 21, preventing the formation of flow dead zones and further improving the reliability and heat dissipation performance of the cooling device.

[0058] To ensure the installation stability of each coil body 4, the support 5 also includes multiple fixing blocks 52, which are fixedly connected to the inner wall of the outer shell 1; at least two fixing blocks 52 are respectively disposed at both ends of the outer shell 1 to limit the axial and radial displacement of the coil body 4.

[0059] Specifically, the fixing block 52 has multiple partitions 521 inserted into the heat exchange channel 31 on the end face facing the coil body 4. An installation space 522 is formed between adjacent partitions 521. Each installation space 522 is used to install one coil body 4. The curvature of the installation space 522 is consistent with the curvature of the corresponding coil body 4, and the thickness of the installation space 522 is the same as the radial thickness of the corresponding coil body 4.

[0060] Understandably, during installation, the fixing block 52 inserts the partition 521 into the heat exchange channel 31, causing two adjacent partitions 521 to engage with the coil body 4, thereby limiting the movement of the electromagnetic coil in the radial direction. This also achieves 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 blocks 52 to both ends of the coil body 4, the two ends of the coil body 4 are constrained, thereby limiting the movement of the electromagnetic coil in the axial direction. This fixes the coil body 4 and prevents it from shifting due to vibration during operation, thus ensuring that the shape of the heat exchange channel 31 remains stable.

[0061] Furthermore, multiple fixing blocks 52 are disposed at both ends of the coil body 4, and multiple partitions 521 are spaced apart within the same heat exchange channel 31. The two ends of each frame 51 correspond one-to-one with and are fixedly connected to the partitions 521 within the same heat exchange channel 31. In this embodiment, four fixing blocks 52 are respectively disposed at both ends of the coil body 4, and four partitions 521 and four frames 51 are provided within the same heat exchange channel 31. The two ends of each frame 51 correspond one-to-one with and are fixedly connected to the partitions 521 within the same heat exchange channel 31. Each partition 521 is connected to a frame 51, which on the one hand enhances the installation stability of the frame 51, further strengthening the installation stability of multiple coil bodies 4; on the other hand, it reduces obstruction of the heat exchange channel 31, reducing the flow resistance of the cooling medium in the heat exchange channel 31. Simultaneously, the fixing blocks 52 avoid occupying unnecessary space while ensuring the precise and displacement-free position of the coil body 4 and the stability of the cooling channel.

[0062] Please see Figure 7 To verify the above thermal management effect, steady-state thermal-fluid coupling simulations were performed on multiple coil bodies 4. The higher the temperature, the darker the corresponding color. The results are as follows: Figure 7 As shown, comparing the coil temperature distribution of the structure of this application (left) and the traditional frameless 51 structure (right), it can be seen that the second coil of the frameless 51 has a significant high-temperature concentration area. However, due to the heat conduction and flow rectification effect of the metal frame 51, the peak temperature of the second coil in this application is significantly reduced, and the coil temperature distribution of the first, second, and third coils is more uniform. This result shows that the proposed solution effectively alleviates the problem of local overheating of the coil and improves the overall thermal stability.

[0063] 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.

[0064] 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 cooling device, characterized in that, include: shell; An iron core, wherein the outer shell is fitted over the iron core, and the iron core and the outer shell form a closed fluid space; A coil body is sleeved on the outer peripheral wall of the iron core, and the coil body is located in the fluid space to divide the fluid space into at least two heat exchange channels. The heat exchange channels are used to communicate with external circulation equipment to drive the cooling working fluid to flow in the heat exchange channels. A support member is disposed within the heat exchange channel and is used to provide rigid support for the coil body.

2. The electromagnetic coil cooling device according to claim 1, characterized in that, The coil body is provided in multiple ways, and the multiple coil bodies are coaxial and nested. The distance between two adjacent coil bodies is the same, and the multiple coil bodies divide the fluid space into multiple heat exchange channels.

3. The electromagnetic coil cooling device according to claim 2, characterized in that, Along the direction from the fluid space to the outer casing and / or the iron core, the radial thickness of the plurality of coil bodies gradually decreases.

4. The electromagnetic coil cooling device according to claim 1, characterized in that, The support includes multiple skeletons, the length direction of which is consistent with the length direction of the coil body, and at least one skeleton is provided in each heat exchange channel.

5. The electromagnetic coil cooling device according to claim 4, characterized in that, The support includes multiple fixing blocks, which are fixedly connected to the inner wall of the outer shell; wherein at least two of the fixing blocks are respectively disposed at both ends of the outer shell to limit the axial and radial displacement of the coil body.

6. The electromagnetic coil cooling device according to claim 5, characterized in that, The fixing block has multiple baffles on its end face facing the coil body, which are inserted into the heat exchange channel. An installation space is formed between adjacent baffles, and each installation space is used to install one coil body. The curvature of the mounting space is the same as the curvature of the coil body corresponding to it, and the thickness of the mounting space is the same as the radial thickness of the coil body corresponding to it.

7. The electromagnetic coil cooling device according to claim 6, characterized in that, Each heat exchange channel is provided with multiple spaced-apart skeletons, and all of the multiple skeletons are fixedly connected to the same coil body; Multiple fixing blocks are disposed at both ends of the coil body, and multiple partitions are spaced apart in the same heat exchange channel. The two ends of each frame correspond one-to-one with and are fixedly connected to the partitions in the same heat exchange channel.

8. The electromagnetic coil cooling device according to claim 1, characterized in that, The outer shell is provided with a liquid inlet, the iron core is provided with an outlet channel, at least one liquid inlet end of the heat exchange channel is connected to the liquid inlet, and at least one liquid outlet end of the heat exchange channel is connected to the outlet channel.

9. The electromagnetic coil cooling device according to claim 8, characterized in that, The axis of the liquid inlet is parallel to the axis of the heat exchange channel. There are multiple liquid inlets, and the multiple liquid inlets are arranged in a circumferential array along the axis of the outer shell. Each liquid inlet is connected to multiple heat exchange channels.

10. The electromagnetic coil cooling device according to claim 8, 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.

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