Novel permanent magnet coupler with good heat dissipation effect

Abstract

The utility model discloses a novel permanent magnet coupler with good heat dissipation effect, including permanent magnet rotor, conductor rotor and the connecting frame between the both, still include heat dissipation subassembly, including heat dissipation shell, water cooling part and air cooling part, the heat dissipation shell is placed between the connecting frame, inside setting water cooling part, air cooling part is placed the permanent magnet rotor outside, and the heat dissipation shell air cooling cooling down, shell body, the heat dissipation shell is wrapped up, and is set up the heat conduction plate between with heat dissipation shell, the water cooling part of this application sets up and air cooling part, and the water cooling part sets up the heat dissipation shell, and the most water cooling heat dissipation of the connecting area of permanent magnet rotor and conductor rotor generates heat, through the heat transfer of water cooling, transfers to the heat dissipation shell and shell, and the effect is obvious, and the air cooling structure of permanent magnet outside setting air cooling cooling down the heat dissipation shell of permanent magnet coupler, and after the water cooling carries away heat, and guides the internal temperature to the heat dissipation shell, carries out air cooling cooling down further to the heat dissipation shell through air cooling.

Description

Technical Field

[0001] This utility model belongs to the field of coupler equipment, specifically, it relates to a novel permanent magnet coupler with good heat dissipation effect. Background Technology

[0002] A permanent magnet coupler (PMC), also known as a magnetic coupler or magnetic drive coupling, works primarily based on electromagnetic induction. Its core consists of two parts: a rotor equipped with permanent magnets (usually neodymium iron boron) and a conductor rotor (usually copper or aluminum). The magnetic field interaction between the permanent magnet rotor and the conductor rotor drives the load equipment to operate.

[0003] During operation, the permanent magnet coupler is driven by the motor input to rotate the permanent magnet rotor, which in turn transmits power to the conductor rotor to drive the load. During this process, the permanent magnet coupler continuously cuts the magnetic lines of force, which leads to the continuous accumulation of heat inside. If the heat is not dealt with in time, the temperature inside the coupler will become too high, affecting the normal use of the equipment.

[0004] To address this, existing technologies employ various heat dissipation and cooling methods. One type can be considered external cooling, which involves installing a heat dissipation structure outside the permanent magnet coupler. For example, Chinese utility model patent CN220173002U proposes an external heat dissipation structure for a high-speed magnetic coupler, which dissipates the heat generated by the permanent magnet coupler to the outside by setting a heat dissipation mechanism outside the permanent magnet coupler. This type of structure is convenient to manufacture and install, and has a low cost because it directly modifies the external structure. However, it mainly relies on indirect heat dissipation, resulting in poor heat dissipation effect, and the structure occupies a large space, making it inconvenient to install. Another type can be considered internal cooling, which involves directly modifying the structure inside the permanent magnet coupler or the permanent magnet coupler housing. Compared to the previous type of structure, the dynamic type provides more direct heat dissipation and occupies less space. For example, the Chinese utility model patent CN219697413U proposes a fast heat dissipation permanent magnet coupler, which directly improves the internal structure and shell of the permanent magnet coupling structure and dissipates heat from the rotor through air cooling. However, since its air inlet is located on the lower side, it inevitably brings in a lot of dust. Furthermore, its main heat dissipation structure is concentrated on the heat dissipation platform below the permanent magnet coupler, and the internal rotor structure relies on air cooling for cooling. This not only results in poor cooling effect but also poses an impact risk and dust-carrying risk to the permanent magnet rotor when directly blown on it. The air-driving fins added to the conductor rotor also affect the cutting of magnetic lines of force, thus affecting the working efficiency of the permanent magnet coupler.

[0005] Therefore, existing technologies need further improvement and enhancement. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a new type of permanent magnet coupler with good heat dissipation effect.

[0007] To achieve the above objectives, the technical solution of this utility model is: a novel permanent magnet coupler with good heat dissipation effect, comprising a permanent magnet rotor, a conductor rotor, and a connecting frame placed between the two, and further comprising a heat dissipation assembly, including a heat dissipation shell, a water-cooling section, and an air-cooling section. The heat dissipation shell is placed between the connecting frame, and the water-cooling section is arranged inside it. The air-cooling section is placed outside the permanent magnet rotor to cool the heat dissipation shell. An outer shell is provided to wrap the heat dissipation shell, and a heat-conducting plate is arranged between the outer shell and the heat dissipation shell.

[0008] In a preferred embodiment of this application, the water-cooling section includes two water-cooling pipes arranged side by side, which surround the heat dissipation shell.

[0009] In a preferred embodiment of this application, two water-cooled pipes share the same inlet and outlet, and are connected in parallel.

[0010] In a preferred embodiment of this application, the heat sink is a detachable docking structure, and a sealing ring is provided on the outer edge of the connection area of ​​the heat sink.

[0011] In a preferred embodiment of this application, the water-cooled pipes have a spiral ring structure, and the two water-cooled pipes are respectively located close to the permanent magnet rotor and the conductor rotor.

[0012] In a preferred embodiment of this application, the air-cooled section includes a centrifugal fan, which is close to the permanent magnet rotor and connected to the heat sink; and an air guide shroud, which is disposed in the air inlet direction of the centrifugal fan and encloses the centrifugal fan, with an air inlet on its surface.

[0013] In a preferred embodiment of this application, the air inlet is disposed on the top surface of the air guide shroud and is tangent to the arc-shaped position of the air guide shroud.

[0014] In a preferred embodiment of this application, the air guide shroud has a vortex shell structure, and the air outlet of the air guide shroud corresponds to the surface of the heat dissipation shell.

[0015] In a preferred embodiment of this application, both the air inlet and the air outlet are equipped with filters.

[0016] In a preferred embodiment of this application, multiple heat-conducting plates are provided, which are heat dissipation fins. The heat-conducting plates pass through the outer casing and are inclined relative to the heat-conducting plates.

[0017] After adopting the above technical solution, the solution provided by this utility model has the following beneficial effects compared with the prior art.

[0018] This application employs a heat sink directly mounted between the connecting frames, allowing the heat dissipation structure to be directly installed within the permanent magnet coupler structure for direct heat dissipation. Compared to the external heat dissipation structures in existing technologies, this approach offers more direct heat dissipation and better cooling performance. Furthermore, this application includes both water-cooling and air-cooling sections. The water-cooling section is directly mounted on the heat sink, providing water cooling to the connection area between the permanent magnet rotor and the conductor rotor, where the most heat is generated. Water cooling transfers internal heat to the heat sink and outer shell via thermal transfer, resulting in direct and significant cooling. Additionally, an external air-cooling structure further cools the heat sink of the permanent magnet coupler. After water cooling removes heat and guides internal temperature to the heat sink, air cooling further cools the heat sink. This avoids the impact of direct airflow on the permanent magnet coupler and reduces the influence of dust carried by the airflow. It also accelerates the natural heat dissipation of the heat sink, further enhancing its heat dissipation capacity.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rotor connection structure of this utility model; Figure 3 This is a schematic diagram of the airflow direction of the air-cooled part of this utility model; Figure 4 This is a schematic diagram of the water-cooling section of this utility model; Figure 5 This is a schematic diagram of the heat dissipation shell connection structure of this utility model.

[0021] In the picture: 1. Permanent magnet rotor; 2. Conductor rotor; 3. Connecting frame; 4. Heat dissipation components; 41. Heat sink housing; 411. Sealing ring; 412. Annular groove; 42. Water cooling section; 421. Water cooling pipe; 422. Water inlet; 423. Water outlet; 43. Air cooling section; 431. Centrifugal fan; 432. Air guide shroud; 433. Air inlet; 434. Air outlet; 5. Outer casing; 51. Heat-conducting plate.

[0022] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] like Figures 1 to 5As shown, this utility model provides a novel permanent magnet coupler with good heat dissipation effect, including a permanent magnet rotor 1, a conductor rotor 2 and a connecting frame 3 placed between the two, and also includes a heat dissipation assembly 4, including a heat dissipation shell 41, a water-cooling part 42 and an air-cooling part 43. The heat dissipation shell 41 is placed between the connecting frames 3 and the water-cooling part 42 is arranged inside. The air-cooling part 43 is placed outside the permanent magnet rotor 1 to cool the heat dissipation shell 41. The outer shell 5 wraps around the heat dissipation shell 41 and a heat-conducting plate 51 is arranged between the outer shell 5 and the heat dissipation shell 41.

[0028] Among them, such as Figure 2 As shown, the main structure of the permanent magnet coupler is similar to that of common couplers in existing technologies, both employing a permanent magnet rotor 1 and a conductor rotor 2 working together to achieve power output to the load; for the connecting frame 3 structure, as... Figure 2 As shown, multiple spaced connecting plates or connecting columns are arranged between the permanent magnet rotor 1 and the conductor rotor 2 to ensure a relative gap between them. Examples include the permanent magnet coupler structures in Chinese Utility Model Patent CN221531265U (a vibration-damping torque-limiting permanent magnet coupler) and Chinese Utility Model Patent CN222785884U (a torque-limiting permanent magnet coupler). This application will not specifically describe the structures in the prior art here. The following mainly focuses on a detailed description of the innovative structure of this application.

[0029] like Figure 1 and Figure 3 As shown, the heat sink 41 can be placed on the surface of the connecting frame 3. The connecting frame 3 serves as the base for placement, providing space for the heat sink 41 and facilitating its installation and positioning. Furthermore, the width of the heat sink 41 should be greater than the length of the connecting frame 3 to facilitate the covering of the permanent magnet rotor 1 and the conductor rotor 2, thereby allowing the internal water cooling unit 42 to remove the heat generated by the permanent magnet rotor 1 and the conductor rotor 2 through heat exchange, thus improving the heat dissipation effect. As a preferred embodiment of this application, such as Figure 1 and Figure 4 As shown, the water-cooling section 42 includes two water-cooling pipes 421 arranged side by side, which surround the heat dissipation shell 41. Furthermore, the two water-cooling pipes 421 share the same inlet 422 and outlet 423, and are connected in parallel.

[0030] It is understandable that, in order to ensure the effect of water cooling, the inlet 422 and outlet 423 must be connected to the refrigerant equipment. The refrigerant (cold water, coolant, etc.) is pumped into the inlet 422 and then distributed to the water cooling pipes on both sides until it flows back to the outlet 423 on the other side, thus realizing the circulation of the refrigerant.

[0031] In addition, the water-cooling pipe 421 has a spiral ring structure. The two water-cooling pipes 421 are respectively located close to the permanent magnet rotor 1 and the conductor rotor 2. The two parallel water-cooling pipes 421 can cool down the permanent magnet rotor 1 and the conductor rotor 2, which have the highest heat on both sides, respectively, thereby improving the cooling effect. The spiral water-cooling pipe structure can also expand the cooling range of water cooling to a certain extent.

[0032] Compared with the existing water-cooling pipe structure, this application adopts two parallel water-cooling pipes sharing the same inlet 422, which can ensure the flow balance of the two water-cooling pipes as much as possible, and avoids the problems of traditional water-cooling pipes needing to surround the entire shell, being long, and having poor end cooling, thus ensuring the cooling effect.

[0033] Optionally, such as Figure 5 As shown, the heat sink 41 is a detachable docking structure. A sealing ring 411 is provided on the outer edge of the connection area of ​​the heat sink 41. The connection between the two halves of the heat sink 41 can be provided with slots and bayonets for pre-positioning, and fixed by bolts or flanges to ensure the connection effect.

[0034] To improve the sealing effect, an annular groove 412 can be provided at the edge of the connection of the heat sink 41 to accommodate the sealing ring 411 and improve the sealing effect of the entire heat sink 41.

[0035] In a preferred embodiment of this application, the air-cooled section 43 includes a centrifugal fan 431, which is close to the permanent magnet rotor 1 and connected to the heat sink 41; and an air guide shroud 432, which is disposed in the air inlet direction of the centrifugal fan 431 and encloses the centrifugal fan 431, with an air inlet 433 disposed on its surface.

[0036] Among them, such as Figure 3 As shown, the air inlet 433 is located on the top surface of the air guide shroud 432 and is tangent to the arc-shaped position of the air guide shroud 432; the air guide shroud 432 has a vortex structure, and the air outlet 434 of the air guide shroud 432 corresponds to the surface of the heat dissipation shell 41, as shown. Figure 3 As shown, since the surface of the air guide shroud 432 has an arc-shaped structure, the air inlet 433 can be set in the tangential direction of the arc-shaped area at the top of the air guide shroud 432, so that air can enter along the tangential direction. Compared with the traditional air inlet 433 which directly enters along the rotation axis of the centrifugal fan 431, the tangential air inlet of this application allows the airflow entering the air guide shroud 432 to rotate and flow along the inner wall of the air guide shroud 432. On the one hand, it reduces the direct impact of the intake airflow on the centrifugal fan 431 and reduces the impact on the centrifugal fan 431. On the other hand, the rotating airflow in the air guide shroud 432 can play a certain separation role, throwing dust particles in the air onto the inner wall of the air guide shroud 432, which plays a certain role in purifying the air.

[0037] For the air guide shroud 432, the diameter of the air outlet 434 is larger than that of the air inlet 433, and it can cover the surface of the heat sink 41 to a certain extent. Furthermore, the air guide shroud 432 directly covers the centrifugal fan 431, which can not only reduce the leakage of airflow and ensure that the airflow cools the coupler, but also, the air outlet 434 corresponds to the surface of the heat sink 41, so that air enters through the air inlet 433 and is drawn inward by the rotation of the centrifugal fan 431, and then reaches the air outlet 434, so that the airflow is dispersed to the outside along the air guide shroud 432 and blows air onto the surface of the heat sink 41 through the air outlet 434, taking away the heat on the surface of the heat sink 41 and reducing the heat transferred to the surface of the heat sink 41 by the permanent magnet rotor 1 and the conductor rotor 2.

[0038] Of course, in order to prevent the air inside the outer casing 5 from being difficult to dissipate, an air vent structure can be provided on the surface of the outer casing 5 so that the airflow, after passing through the air outlet 434 and being blown to the surface of the heat sink 41, flows to the air vent structure of the outer casing 5, thereby further improving the heat dissipation capacity.

[0039] In other words, this application uses a combination of water cooling and air cooling to cool down the permanent magnet rotor 1 and conductor rotor 2. The water cooling directly cools down the heat of the permanent magnet rotor 1 and conductor rotor 2, and removes the heat through heat exchange in the water cooling pipe. The residual heat remaining on the surface of the heat sink 41 can continue to be cooled down by the cold air in the air cooling section 43, thus ensuring the cooling and heat dissipation effect.

[0040] Optionally, both the air inlet 433 and the air outlet 434 are equipped with filters to isolate dust from the airflow flowing through the air inlet 433 and the air outlet 434, thereby improving the cleanliness of the air.

[0041] In addition, multiple heat-conducting plates 51 can be provided, which are heat dissipation fins. The heat-conducting plates 51 pass through the outer shell 5 and are inclined relative to the heat-conducting plates 51. On the one hand, the heat of the heat sink 41 can be better dissipated from the outer shell 5 through the heat-conducting plates 51, improving the heat dissipation effect. On the other hand, the structure of the heat dissipation fins can expand the heat dissipation area, making it easier for the air-cooling unit 43 to better blow air to cool the heat-conducting plates 51.

[0042] Specifically, during use, the two water-cooling pipes of the water-cooling section 42 introduce refrigerant into the heat sink 41 to directly cool the heat sink 41, reducing the part where the permanent magnet rotor 1 and conductor rotor 2 generate the most heat. The heat is carried away through heat exchange. After that, the centrifugal fan 431 is turned on to introduce external airflow into the air guide shroud 432 through the air inlet 433, and guide the airflow to the middle surface of the heat sink 41 through the air outlet 434, thereby cooling the residual heat on the surface of the heat sink 41 and further improving the heat dissipation and cooling effect.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A novel permanent magnet coupler with good heat dissipation, comprising a permanent magnet rotor, a conductor rotor, and a connecting frame disposed between the two, characterized in that, Also includes The heat dissipation assembly includes a heat dissipation shell, a water-cooling section, and an air-cooling section. The heat dissipation shell is placed between the connecting frames, and the water-cooling section is disposed inside it. The air-cooling section is placed outside the permanent magnet rotor to cool the heat dissipation shell. The outer casing encloses the heat dissipation shell, and a heat-conducting plate is disposed between the outer casing and the heat dissipation shell.

2. The novel permanent magnet coupler with good heat dissipation effect as described in claim 1, characterized in that, The water-cooling section includes two water-cooling pipes arranged side by side, which surround the heat dissipation shell.

3. A novel permanent magnet coupler with good heat dissipation effect as described in claim 2, characterized in that, The two water-cooled pipes share the same inlet and outlet, and are connected in parallel.

4. A novel permanent magnet coupler with good heat dissipation effect as described in claim 2, characterized in that, The heat sink is a detachable, docking structure, and a sealing ring is provided on the outer edge of the connection area of ​​the heat sink.

5. A novel permanent magnet coupler with good heat dissipation effect as described in claim 2, characterized in that, The water-cooled pipe has a spiral ring structure, and the two water-cooled pipes are respectively located close to the permanent magnet rotor and the conductor rotor.

6. A novel permanent magnet coupler with good heat dissipation as described in claim 1, characterized in that, The air-cooling unit includes A centrifugal fan is located near the permanent magnet rotor and connected to the heat dissipation housing; An air guide shroud is positioned in the air inlet direction of the centrifugal fan and encloses the centrifugal fan, with an air inlet on its surface.

7. A novel permanent magnet coupler with good heat dissipation as described in claim 6, characterized in that, The air inlet is located on the top surface of the air guide shroud and is tangent to the arc-shaped position of the air guide shroud.

8. A novel permanent magnet coupler with good heat dissipation as described in claim 6, characterized in that, The air guide shroud has a vortex structure, and the air outlet of the air guide shroud corresponds to the surface of the heat dissipation shell.

9. A novel permanent magnet coupler with good heat dissipation as described in claim 8, characterized in that, Both the air inlet and the air outlet are equipped with filters.

10. A novel permanent magnet coupler with good heat dissipation as described in claim 1, characterized in that, The heat-conducting plate is provided with multiple heat dissipation fins, and the heat-conducting plate passes through the outer shell and is inclined relative to the heat-conducting plate.

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