Integrated magnetic suspension motor integrated with heat dissipation unit and magnetic suspension pump

Abstract

The utility model discloses an integrated magnetic suspension motor and a magnetic suspension pump integrated with a heat radiation unit, the magnetic suspension motor comprises a housing, a pedestal, a stator assembly and a control unit, the stator assembly and the control unit are arranged in the housing, and the control unit comprises a control circuit board and a plurality of power elements arranged on the control circuit board. A heat dissipation unit arranged along the inner wall of the shell is further arranged in the shell, the heat dissipation unit is arranged on one side of the control circuit board, the heat dissipation unit corresponds to the multiple power elements in the axis direction, and the heat dissipation unit is arranged to conduct heat of the multiple power elements to the shell so as to cool the multiple power elements. The heat dissipation unit enables a medium for conducting heat to exist between the shell and the power element, so that the power element can be better cooled, and the heat dissipation effect is improved; and the heat dissipation unit is integrated in the magnetic suspension motor, and the internal space of the magnetic suspension motor is fully utilized, so that the size of the magnetic suspension motor is relatively small, and a relatively good heat dissipation effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic suspension motors, in particular to an integrated magnetic suspension motor and a magnetic suspension pump with an integrated heat dissipation unit. Background Art

[0002] A magnetic levitation motor is a magnetic levitation rotary drive that uses magnetic field force to suspend the rotor so that there is no mechanical contact between the rotor and the stator. The magnetic levitation motor can be a magnetic bearing motor, a bearingless motor, or a bearingless thin-film motor, etc.

[0003] A magnetic bearing motor, also known as a magnetic bearing, is a motor that combines a rotary drive motor with an axial magnetic bearing or / and a radial magnetic bearing or / and an axial-diameter hybrid magnetic bearing instead of integrating them together.

[0004] A bearingless motor is a motor that integrates motor rotation and suspension functions. A bearingless motor has an additional set of windings on top of the windings that generate a rotating drive magnetic field to generate an excitation magnetic field. The interaction between the two magnetic fields breaks the balanced distribution of the original drive magnetic field, thereby generating a radial force acting on the rotor. The rotor is suspended by controlling the radial force in the motor. Compared with a magnetic bearing motor, the magnetic suspension winding of a bearingless motor is wound on the stator and does not occupy additional radial space, which to a certain extent overcomes the shortcomings of large size and high cost of magnetic bearings. In order to achieve suspension of the motor rotor in five degrees of freedom, early bearingless motors generally required two bearingless motors and one axial magnetic bearing.

[0005] The bearingless thin-film motor is a special bearingless motor that inherits the advantages of bearingless motors. The axial length to diameter ratio of the rotor is very small and it is in the shape of a thin film, eliminating the axial magnetic bearing. The bearingless technology is used to realize the rotation of the rotor and the active suspension in the radial direction. The magnetic circuit formed by the mechanical structure is used to realize the passive suspension of the other three degrees of freedom except the radial and rotor rotation degrees of freedom. It has the characteristics of high cleanliness, no precipitation, no particles, no dynamic seal, and excellent performance. It has good application prospects in ultra-pure drive fields such as biochemistry, medical treatment, and semiconductor manufacturing.

[0006] Unless otherwise specified, the term magnetic levitation motor refers to a magnetic levitation rotary drive that uses magnetic field force to suspend the rotor so that there is no mechanical contact between the rotor and the stator.

[0007] The magnetic levitation motor is integrated with various sensors and sensor circuits, and a signal conditioning module that adjusts and processes the sensor signal containing control data output by the sensor. The sensor, sensor circuit and signal conditioning module constitute a sensor module, and the control data of the magnetic levitation motor can be detected in real time through the sensor module. With the control data as feedback, the magnetic levitation motor controller generates a control signal for the power amplifier as the execution part according to the control strategy. The power amplifier outputs current to excite the electromagnetic coil of the stator part of the magnetic levitation motor to achieve the suspension and / or rotation control of the rotor.

[0008] As the core part of the entire suspension control system, the controller is currently often placed separately from the magnetic suspension motor. The controller is located outside the magnetic suspension motor. The magnetic suspension motor and the controller are two independent components. The signal between the two is transmitted to the controller for processing via a signal line. However, the split magnetic suspension motor is inconvenient to carry and transport, and has a large space occupancy rate. In order to solve this problem, a Chinese patent with patent number CN112807563A proposes a magnetic suspension pump, see Figure 1 In the patent, the magnetic levitation pump 100' includes a housing 20' and an impeller 40', a control component 60' and a motor 70' arranged in the housing 20'. The control component 60' includes a control circuit board 62', and the motor 70' includes a rotor 72' fixed to the impeller 40' and a stator 74' fixed to the control circuit board 62', and the stator 74' is electrically connected to the control circuit board 62'. However, the patent places the control circuit board in the magnetic levitation pump, and some electronic components on the control circuit board have the problem of heating after long-term operation. Since only the housing is used as a cooling source, the control circuit board is not in direct contact with the housing, and the effect of heat dissipation of the large amount of heat generated by the electronic components through the housing is poor. Excessive heat will still remain in the magnetic levitation pump, resulting in excessive temperature in the magnetic levitation pump, affecting the normal operation of the stator and the rotor, and further affecting the working performance of the magnetic levitation pump. Utility Model Content

[0009] In order to overcome the defects in the prior art, the embodiments of the present invention provide an integrated magnetic levitation motor and magnetic levitation pump with an integrated heat dissipation unit, which are used to solve at least one of the above problems.

[0010] The embodiment of the present application discloses an integrated magnetic levitation motor and magnetic levitation pump with an integrated heat dissipation unit. The heat dissipation unit is arranged in the shell, the heat dissipation unit is fixedly connected to the shell, and the heat dissipation unit corresponds to the axis direction of multiple power elements to absorb the heat generated by the multiple power elements, and then the heat generated by the multiple power elements is conducted to the shell, so as to dissipate the heat to the outside, and realize cooling of the multiple power elements. The arrangement of the heat dissipation unit enables a medium for conducting heat between the shell and the power elements, which can better cool the power elements, improve the heat dissipation effect, and avoid affecting the normal working performance of the magnetic levitation motor due to excessive temperature inside the magnetic levitation motor; and the heat dissipation unit is integrated inside the magnetic levitation motor, making full use of its internal space, so that the volume of the magnetic levitation motor is small while ensuring a good heat dissipation effect.

[0011] Among them, an integrated magnetic levitation motor with an integrated heat dissipation unit, the magnetic levitation motor includes a shell, a base, and a stator assembly and a control unit arranged in the shell, the base is fixedly connected to one end of the shell, the stator assembly includes multiple iron cores and multiple stator windings, at least one stator winding is wound around each iron core, and the stator winding is electrically connected to the control unit, characterized in that the control unit includes a control circuit board and multiple power elements arranged thereon, and a heat dissipation unit is also provided in the shell, the heat dissipation unit is arranged along the inner wall of the shell and fixedly connected to the shell, the heat dissipation unit is arranged on one side of the control circuit board, the heat dissipation unit corresponds to the multiple power elements in the axial direction, and the heat dissipation unit is configured to conduct the heat of the multiple power elements to the shell to cool the multiple power elements.

[0012] Furthermore, the at least one heat dissipation block is parallel to the opposite surface between the multiple power components, and the maximum surface area of ​​the side of the at least one heat dissipation block adjacent to the multiple power components is greater than or equal to the maximum surface area of ​​the side of the multiple power components adjacent to the at least one heat dissipation block.

[0013] Furthermore, the multiple power elements are fixed on the upper side of the control circuit board, the at least one heat sink is arranged above the control circuit board, the lower side of the at least one heat sink is abutted against the upper side of the multiple power elements, and the heat of the multiple power elements is first conducted to the at least one heat sink, and then conducted to the shell.

[0014] Furthermore, the multiple power elements are fixed on the lower side of the control circuit board, the at least one heat sink is arranged above the control circuit board and abuts against the upper side of the control circuit board, the control circuit board is provided with multiple vias along the axial direction, each of the vias is filled with thermal conductive material, and the heat of the multiple power elements is first conducted from the thermal conductive material in the via to the at least one heat sink, and then conducted to the housing.

[0015] Furthermore, the plurality of power elements are arranged in an arc shape along the outer circumference of the control circuit board, and the at least one heat sink is arranged in an arc shape along the circumferential direction;

[0016] Alternatively, the plurality of power elements are arranged in a row toward the central axis of the control circuit board, and the at least one heat sink is arranged toward the central axis of the control circuit board.

[0017] Furthermore, the at least one heat sink block is also configured to fix the control circuit board, and at least one screw hole is provided on the heat sink block along the axial direction, and a plurality of connecting holes are correspondingly provided on the control circuit board, and each connecting hole corresponds to one screw hole, and the control circuit board and the heat sink block are fixedly connected by screws passing through the connecting holes and the screw holes.

[0018] Furthermore, a fixing unit is provided in the shell, the fixing unit is arranged on the inner wall of the shell and fixedly connected thereto, and the fixing unit is configured to fix the control circuit board.

[0019] Furthermore, the fixing unit is configured as at least one fixing block, and the at least one fixing block is arranged in a circumferential direction along the inner wall of the shell. The at least one fixing block is integrally formed with the shell, and each of the fixing blocks is provided with at least one screw hole along the axial direction. The control circuit board is provided with a plurality of connecting holes along the outer circumference, and the control circuit board and the fixing block are fixedly connected by screws passing through the connecting holes and the screw holes.

[0020] Furthermore, the fixing unit is configured as at least one clip, each of the clips includes a male clip and a female clip, the male clips are arranged along the circumferential direction and fixedly connected to the inner wall of the shell, the female clips are fixed on the control circuit board, and the female clips and the male clips are correspondingly snapped together to achieve a fixed connection between the control circuit board and the shell.

[0021] Furthermore, a partition plate is provided in the shell, the partition plate is fixed on the inner wall of the shell and the two are integrally formed, the partition plate is configured to separate the inner cavity formed by the shell and the base into a first cavity and a second cavity, the stator assembly is arranged in the first cavity, and the control unit is arranged in the second cavity.

[0022] Furthermore, the at least one heat sink block and the fixing unit are both fixed on a side surface of the partition plate adjacent to the control unit, and the control circuit board is arranged on a side surface of the at least one heat sink block and the fixing unit away from the partition plate, and is fixed in the shell through the fixing unit and / or the at least one heat sink block.

[0023] Furthermore, the partition plate is provided with a through hole, the first cavity and the second cavity are partially connected through the through hole, and the lead end of the stator winding is passed through the through hole into the second cavity and is electrically connected to the control circuit board.

[0024] Furthermore, the control circuit board is also provided with a plurality of other electronic components, and the space formed by the fixing unit and the heat dissipation block is configured as a receiving cavity, and the receiving cavity is configured to receive the plurality of other electronic components.

[0025] The present application also discloses a magnetic levitation pump, comprising a pump head, an impeller rotor and an integrated magnetic levitation motor with the integrated heat dissipation unit as described above, wherein the pump head cover is arranged on the top of the magnetic levitation motor and is fixedly connected thereto, the impeller rotor portion is located in the pump head and cooperates with the stator assembly, and the stator assembly is configured to generate a magnetic field to drive the impeller rotor to rotate and levitate.

[0026] The beneficial effects of the utility model are as follows:

[0027] By arranging a heat dissipation unit in the shell, the heat dissipation unit is fixedly connected to the shell, and the heat dissipation unit corresponds to the axis direction of the multiple power elements, so as to absorb the heat generated by the multiple power elements, and then conduct the heat generated by the multiple power elements to the shell, so as to dissipate the heat to the outside, and realize cooling of the multiple power elements. The arrangement of the heat dissipation unit enables a medium for conducting heat between the shell and the power elements, which can better cool the power elements, improve the heat dissipation effect, and avoid the normal working performance of the magnetic levitation motor being affected by the excessive temperature inside the magnetic levitation motor; and the heat dissipation unit is integrated inside the magnetic levitation motor, making full use of its internal space, so that the volume of the magnetic levitation motor is small while ensuring a good heat dissipation effect.

[0028] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 is a cross-sectional view of the prior art cited in the background art;

[0031] Figure 2 It is a structural schematic diagram of an integrated magnetic suspension motor with an integrated heat dissipation unit in an embodiment of the utility model;

[0032] Figure 3 This is a front view of an integrated magnetic suspension motor with an integrated heat dissipation unit in an embodiment of the utility model;

[0033] Figure 4 It is a cross-sectional schematic diagram of an embodiment of an integrated magnetic levitation motor with an integrated heat dissipation unit in an embodiment of the utility model;

[0034] Figure 5 It is a cross-sectional schematic diagram of another embodiment of an integrated magnetic levitation motor with an integrated heat dissipation unit in an embodiment of the utility model;

[0035] Figure 6 It is a cross-sectional schematic diagram of another embodiment of an integrated magnetic levitation motor with an integrated heat dissipation unit in the embodiment of the utility model;

[0036] Figure 7 It is a cross-sectional schematic diagram of another embodiment of an integrated magnetic levitation motor with an integrated heat dissipation unit in the embodiment of the utility model;

[0037] Figure 8 It is a structural schematic diagram of an embodiment of a housing in the embodiment of the utility model;

[0038] Fig. 9 It is a top view of an embodiment of the housing in the embodiment of the utility model;

[0039] Fig.10 It is a top view of another embodiment of the housing in the embodiment of the utility model;

[0040] Fig.11 It is a top view of an embodiment of a control circuit board in the embodiment of the utility model;

[0041] Fig.12 It is a bottom view of another embodiment of the control circuit board in the embodiment of the utility model;

[0042] Fig.13It is a structural schematic diagram of a magnetic suspension pump in an embodiment of the utility model;

[0043] Fig.14 It is a cross-sectional schematic diagram of the magnetic levitation pump in the embodiment of the utility model.

[0044] The reference numerals of the above drawings are: 1, magnetic levitation motor; 10, housing; 100, first cavity; 101, second cavity; 11, base; 12, stator assembly; 120, iron core; 121, stator winding; 1210, lead-out terminal; 13, partition plate; 130, through hole; 14, fixing block; 15, heat sink; 16, screw hole; 17, through hole;

[0045] 2. Control unit; 20. Control circuit board; 21. Power element;

[0046] 3. Magnetic levitation pump; 30. Pump head; 31. Impeller rotor. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions, for example, a system, product or device including a series of units is not necessarily limited to those units clearly listed, but may include other units that are not clearly listed or inherent to these products or devices.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0050] The drawings in this disclosure are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only schematic diagrams.

[0051] In the prior art, the controller, as the core part of the entire suspension control system, is often placed separately from the magnetic suspension motor. The controller is located outside the magnetic suspension motor. The magnetic suspension motor and the controller are two independent components. The signal of the magnetic suspension motor is transmitted to the controller for processing through a signal line. However, the split magnetic suspension motor is inconvenient to carry and transport, and has a large space occupancy rate. In order to solve this problem, a Chinese patent with patent number CN112807563A proposes a magnetic suspension pump, see Figure 1 In the patent, the magnetic levitation pump 100' includes a housing 20' and an impeller 40', a control component 60' and a motor 70' arranged in the housing 20'. The control component 60' includes a control circuit board 62', and the motor 70' includes a rotor 72' fixed to the impeller 40' and a stator 74' fixed to the control circuit board 62', and the stator 74' is electrically connected to the control circuit board 62'. However, the patent places the control circuit board in the magnetic levitation pump, and some electronic components on the control circuit board have the problem of heating after long-term operation. Since only the housing is used as a cooling source, the control circuit board is not in direct contact with the housing, and the effect of heat dissipation of the large amount of heat generated by the electronic components through the housing is poor. Excessive heat will still remain in the magnetic levitation pump, resulting in excessive temperature in the magnetic levitation pump, affecting the normal operation of the stator and the rotor, and further affecting the working performance of the magnetic levitation pump.

[0052] The present application arranges a heat dissipation unit in the shell, the heat dissipation unit is fixedly connected to the shell, and the heat dissipation unit corresponds to the axis direction of multiple power elements to absorb the heat generated by the multiple power elements, and then conducts the heat generated by the multiple power elements to the shell, thereby dissipating the heat to the outside, thereby cooling the multiple power elements. The arrangement of the heat dissipation unit allows a medium for conducting heat between the shell and the power elements, which can better cool the power elements, improve the heat dissipation effect, and avoid the normal working performance of the magnetic levitation motor being affected by the excessive temperature inside; and the heat dissipation unit is integrated inside the magnetic levitation motor, making full use of its internal space, so that the volume of the magnetic levitation motor is small while ensuring a good heat dissipation effect.

[0053] In order to enable those skilled in the art to better understand the present invention, the following reference is made to Figure 2-Figure 14 The utility model is further described in detail with specific implementation methods.

[0054] According to an embodiment of the utility model, the utility model proposes an integrated magnetic levitation motor with an integrated heat dissipation unit. The magnetic levitation motor 1 includes a housing 10, a base 11, a stator assembly 12 and a control unit 2 arranged in the housing 10. The base 11 is fixedly connected to one end of the housing 10. The stator assembly 12 includes a plurality of iron cores 120 and a plurality of stator windings 121. At least one stator winding 121 is wound on each iron core 120. The stator winding 121 is electrically connected to the control unit 2. The control unit 2 includes a control circuit board 20 and a plurality of power elements 21 arranged thereon. A heat dissipation unit is also provided in the housing 10. The heat dissipation unit is arranged along the inner wall of the housing 10 and is fixedly connected to the housing 10. The heat dissipation unit is arranged on one side of the control circuit board 20. The heat dissipation unit corresponds to the plurality of power elements 21 in the axial direction. The heat dissipation unit is configured to conduct the heat of the plurality of power elements 21 to the housing 10 to cool the plurality of power elements 21.

[0055] Specifically, in this embodiment, combined with Figure 2-Figure 4 An integrated magnetic levitation motor 1 with an integrated heat dissipation unit, the magnetic levitation motor 1 includes a housing 10, a base 11, a stator assembly 12 and a control unit 2 arranged in the housing 10, the base 11 is fixedly connected to one end of the housing 10, the stator assembly 12 includes a plurality of iron cores 120 and a plurality of stator windings 121, and at least one stator winding 121 is wound on each iron core 120. The stator winding 121 is electrically connected to the control unit 2. The control unit 2 includes a control circuit board 20 and a plurality of power elements 21 arranged thereon. The power element 21, as a heat source of the control unit 2, generates a lot of heat when working, so it is necessary to arrange a heat dissipation unit in the housing to dissipate the heat of the power element 21. The heat dissipation unit is arranged in the housing 10. The heat dissipation unit is arranged along the inner wall of the housing 10 and is fixedly connected to the housing 10. The heat dissipation unit is arranged on one side of the control circuit board 20, that is, the heat dissipation unit can be arranged on the upper side of the control circuit board 20, or on the lower side of the control circuit board 20, or on both the upper side and the lower side of the control circuit board 20. The heat dissipation unit corresponds to the multiple power elements 21 in the axial direction, so that the heat dissipation unit can completely cover the multiple power elements 21 in the axial space, thereby dissipating heat to the multiple power elements 21 to the maximum effect. Since the heat dissipation unit is connected to the housing 10, the heat dissipation unit can conduct the heat of the multiple power elements 21 to the housing 10, and the housing 10 then dissipates the heat to the outside air to cool the multiple power elements 21, thereby reducing the temperature inside the magnetic levitation motor 1 and ensuring the stable operation of the magnetic levitation motor 1.

[0056] It should be noted that the present invention does not limit the structure of the stator winding 121 of the magnetic levitation motor 1, which can be a single winding structure or a double winding structure, that is, at least one stator winding 121 is provided on each iron core 120. In one embodiment, a stator winding 121 is provided on each iron core 120, and the stator winding 121 is a concentrated winding. The stator winding 121 is used for both rotation control and suspension control to form a single winding structure of the magnetic levitation motor 1. In another embodiment, two stator windings 121 are provided on each iron core 120, and both of the two stator windings 121 can be concentrated windings, or one stator winding 121 can be a concentrated winding and the other stator winding 121 can be a distributed winding. The two stator windings 121 on the iron core 120 are stacked together, one stator winding 121 is used for rotation control, and the other stator winding 121 is used for suspension control to form a double winding structure of the magnetic levitation motor 1. Since the single-winding magnetic levitation motor 1 can realize the rotation and suspension of the motor rotor at the same time with only one set of stator windings 121, it has better performance advantages than the double-winding magnetic levitation motor 1. Those skilled in the art can select the stator winding 121 structure in the magnetic levitation motor 1 as a single winding structure or a double winding structure according to actual needs to meet the actual working performance of the magnetic levitation motor 1. The following embodiments and figures in this application are all based on the structure of a single winding, and one stator winding 121 is a centralized winding, which is used for both rotation control and suspension control.

[0057] Reference Figure 11-12 , a plurality of power elements 21 are electrically connected to the control circuit board 20. The number of the power elements 21 is consistent with the number of the iron cores 120 in the stator assembly 12. For example: the magnetic levitation motor 1 includes 6 iron cores 120 and 6 stator windings 121, and each iron core 120 corresponds to a power element 21, that is, in this embodiment, 6 power elements 21 are electrically connected to the control circuit board 20. The plurality of power elements 21 are arranged at intervals or in rows along the circumferential direction. During the operation of the magnetic levitation motor 1, the plurality of power elements 21 are prone to generate more heat under continuous conduction, resulting in severe heating. Therefore, how to solve the problem of heat dissipation of the power elements 21 is a problem to be solved in the present application, and the specific technical solution is as follows.

[0058] Specifically, in the present embodiment, the heat dissipation unit is configured as at least one heat dissipation block 15. At least one heat dissipation block 15 is arranged along the inner wall of the shell and is fixedly connected to the inner wall of the shell 10. The number of heat dissipation blocks 15 can also be set according to the number of power elements 21. For example, if there are two power elements 21, the number of heat dissipation blocks 15 can also be set to three, and each heat dissipation block 15 corresponds to one power element 21. However, this method is more troublesome than setting a larger heat dissipation block 15. Those skilled in the art can choose according to actual needs. Preferably, at least one heat dissipation block 15 is integrally formed with the shell 10. Since the heat dissipation block 15 is arranged inside the shell 10, the integral forming method facilitates the fixing of the heat dissipation block 15 inside the shell 10. Multiple power elements 21 are electrically connected to the control circuit board 20 and arranged at intervals. The configuration methods of multiple power elements 21 include but are not limited to Fig.11 In the circumferential direction of the magnetic suspension motor, those skilled in the art can make specific settings according to the size of the internal space of the magnetic suspension motor and the size of the control circuit board. At least one heat sink 15 corresponds to the plurality of power elements 21 in the axial direction, so that when the control circuit board 20 is installed in the housing 10, the heat sink 15 can cover the power elements 21 in the axial space, thereby achieving the purpose of heat dissipation of the power elements 21 by the heat sink 15.

[0059] In the present application, a plurality of power components 21 may be fixed on the upper side of the control circuit board 20, or on the lower side of the control circuit board 20; at least one heat sink 15 may be arranged above the control circuit board 20, or below the control circuit board 20, or may be arranged above and below the control circuit board 20 at the same time, for details, see Figure 7 Those skilled in the art can specifically set the placement positions of the multiple power components 21 and the at least one heat sink 15 according to the space inside the housing 10. The specific embodiments of the relative positions of the multiple power components 21 and the at least one heat sink 15 are as follows.

[0060] In one embodiment, see Fig.11 , multiple power components 21 are fixed on the upper side of the control circuit board 20, at least one heat sink 15 is arranged above the control circuit board 20, and the lower side of at least one heat sink 15 abuts against the upper side of multiple power components 21. The heat of multiple power components 21 is first conducted to at least one heat sink 15, then to the housing 10, and then to the external air.

[0061] In another embodiment, see Fig.12, multiple power components 21 are fixed on the lower side of the control circuit board 20, and at least one heat sink 15 is arranged above the control circuit board 20 and abuts against the upper side of the control circuit board 20. In order to facilitate the heat conduction of multiple power components 21 to at least one heat sink 15, multiple vias 17 are penetrated along the axial direction of the control circuit board, each of which is filled with a heat conductive material, and the two ends of the via 17 are respectively abutted against the power component 21 and the heat sink 15, providing a heat conduction path for the power component 21. Further, in addition to being arranged in the via 17, the heat conductive material can also be covered on the top of the via 17 with a layer of heat conductive material to abut against the heat sink 15, increase the heat conduction area, and improve the heat dissipation effect. In this embodiment, the number of vias 17 can be equal to the number of power components 21, that is, each power component corresponds to a via 17, so as to improve the heat dissipation effect; of course, the number of vias 17 can be different from the number of power components 21, and those skilled in the art can determine the number of vias 17 according to actual needs. The heat of the multiple power elements 21 is first conducted from the heat-conducting material in the via 17 to at least one heat sink 15, then to the housing 10, and then to the outside air. The above two embodiments are both developed by taking the heat sink 15 arranged above the control circuit board 20 as an example. There can be multiple combinations of the relative positions between the heat sink 15 and the power elements 21. It is only necessary to ensure that the two correspond to each other in the axial direction to achieve the heat conduction of the power elements 21. Further, the multiple power elements 21 are fixed on the lower side of the control circuit board 20. There are basically no electronic components on the upper side of the control circuit board 20. In the second cavity, the space distance between the bottom of the control circuit board 20 and the base is large, which is convenient for the installation of the control circuit board 20. Therefore, this embodiment is a preferred embodiment, and the following embodiments are all developed by taking this structure as an example.

[0062] Furthermore, in the present application, the configuration of the multiple power elements 21 on the control circuit board 20 can be in an arc configuration or in a row configuration, and the specific implementation is as follows:

[0063] In one embodiment, the plurality of power components 21 are arranged in an arc shape along the outer circumference of the control circuit board 20. Figure 11-12 In order to match the arrangement of the multiple power components 21, at least one heat sink 15 is also arranged in an arc shape along the circumferential direction in the housing 10. After the position of the control circuit board 20 in the housing is fixed, at least one heat sink 15 corresponds to the power component 21 in the axial direction, thereby achieving heat conduction. The arc-shaped arrangement of multiple power components is a preferred embodiment.

[0064] In another embodiment, the multiple power elements 21 are arranged in a row or in a line toward the central axis of the control circuit board 20, and the specific arrangement of the multiple power elements 21 is set according to the placement of the multiple electronic components on the control circuit board 20. In order to match the arrangement of the multiple power elements 21, at least one heat sink 15 is also arranged toward the central axis of the control circuit board 20. After the position of the control circuit board 20 in the housing is fixed, the heat sink 15 corresponds to the power element 21 in the axial direction, thereby achieving heat conduction.

[0065] It should be noted that the configuration of the control circuit board 20 in the present application is preferably horizontally configured in the housing 10, and at least one heat sink 15 can be configured as a larger annular heat sink 15, and one heat sink 15 is parallel to the relative surface between the multiple power elements 21, so that the maximum surface area of ​​the side of the heat sink 15 adjacent to the multiple power elements 21 is greater than or equal to the maximum surface area of ​​the side of the multiple power elements 21 adjacent to the heat sink 15, and this embodiment is a preferred implementation. Of course, those skilled in the art can also set the orientation of the heat sink according to the layout space in the housing 10, and only need to ensure that the heat sink 15 can cover the surface of the multiple power elements 21 to the maximum in the axial space to play a role in heat dissipation of the multiple power elements 21.

[0066] In the present application, the heat sink 15 can not only dissipate heat for the multiple power components 21, but also fix the position of the control circuit board 20 in the housing 10. Figure 8-9 . Specifically, a plurality of screw holes 16 are provided on the heat sink 15, and the control circuit board 20 is fixed to the heat sink 15 through the screw holes. Since a plurality of power components 21 are usually arranged on one side of the control circuit board 20, and the corresponding heat sink 15 is also provided on one side of the housing 10, simply fixing the control circuit board 20 by the heat sink 15 may result in an unstable position of the control circuit board 20 in the housing 10, thereby affecting the heat dissipation of the plurality of power components 21 by the heat sink 15. Therefore, in order to more stably fix the control circuit board 20, the present application further provides a fixing unit in the housing 10 to fix the control circuit board 20. The fixing unit is provided on the inner wall of the housing 10 and fixedly connected thereto. The fixing unit is configured to fix the control circuit board 20 in the housing 10.

[0067] Furthermore, there may be many specific ways to configure the fixing unit, such as a fixing block 14, a buckle, etc., as long as the position of the control circuit board 20 in the housing 10 can be fixed. The implementation methods of the fixing unit in this application include the following two:

[0068] In one embodiment, the fixing unit is configured as at least one fixing block 14, see Figure 8-10. At least one fixing block 14 is arranged along the inner wall of the housing 10 in a circumferential direction. At least one fixing block 14 can be integrally formed with the housing 10, or can be fixed by welding. The technicians in this field can determine the fixing method according to actual needs. Further, each fixing block 14 is provided with at least one screw hole along the axial direction. The technicians in this field can determine the number of fixing blocks 14 and the number of screw holes 16 on each fixing block 14 according to actual conditions. If the number of fixing blocks 14 is small and the size of each fixing block 14 is large, in order to ensure that the control circuit board 20 can be firmly fixed in the housing 10, 2 or more screw holes 16 can be provided on each fixing block 14 to perform fixed connection of the control circuit board 20 at multiple points. Further, the control circuit board 20 is provided with a plurality of connection holes along the outer circumference, the number of the connection holes is consistent with the number of the screw holes 16, and each connection hole corresponds to a screw hole 16. The fixed connection between the control circuit board 20 and the fixing block 14 is realized by screws penetrating the connection holes and the screw holes 16. In this embodiment, the control circuit board 20 is positioned in the housing 10 by the fixing block 14 to support and fix the control circuit board 20 .

[0069] In another embodiment, the fixing unit is configured as at least one buckle. The buckle may be a cantilever buckle, a circular buckle, etc., and those skilled in the art may set it according to actual needs. Specifically, each buckle includes a male buckle and a female buckle. The male buckle is arranged along the circumferential direction and fixedly connected to the inner wall of the housing 10, and the female buckle is fixed to the outer edge of the control circuit board 20. When the control circuit board 20 is assembled in the housing 10, each female buckle corresponds to a male buckle, and the female buckle and the male buckle are correspondingly snapped together, thereby realizing a fixed connection between the control circuit board 20 and the housing 10.

[0070] Since the production process of the fixing block 14 is relatively simple compared to the snap connection, it can be formed integrally with the housing 10. Therefore, the configuration method of the fixing unit in each application is preferably the fixing block 14, and the position of the control circuit board 20 in the housing 10 is fixed by the fixing block 14. The following implementation methods are all carried out with the fixing block 14 as an example. The fixing method of the control circuit board 20 in the housing 10, this application protects two embodiments, which are as follows:

[0071] Example 1: Reference Fig.10, the control circuit board is fixed in the housing through a fixing block, and the cooling of multiple power components is achieved through the heat sink. At least one screw hole 16 is provided on the fixing block 14 along the axial direction, and multiple connection holes are provided on the control circuit board 20 along the outer circumference. The number of the connection holes is consistent with the number of the screw holes 16, and each connection hole corresponds to a screw hole 16. The fixed connection between the control circuit board 20 and the fixing block 14 is achieved by screws passing through the connection holes and the screw holes 16. In this embodiment, the positioning of the control circuit board 20 in the housing 10 is achieved by the fixing block 14 to support and fix the control circuit board 20.

[0072] In this embodiment, the control circuit board 20 is fixedly connected to the fixing block 14, so that the position of the control circuit board 20 in the housing 10 is fixed. Further, the relative position of the control circuit board 20, the fixing block 14 and the heat sink 15 includes two implementations, as follows:

[0073] In an optional embodiment, the control circuit board 20 is arranged above the fixed block 14 and the heat sink 15, specifically, the control circuit board 20 is fixed on the upper side of the fixed block 14, and the side of the control circuit board 20 provided with the power element 21 is arranged toward the upper side of the fixed block 14, and the control circuit board 20 is fixedly connected to the fixed block 14 by screws penetrating the screw holes 16 and the connection holes. At the same time, it is necessary to make the multiple power elements 21 correspond to the heat sink 15 in the axial direction, and the heat generated by the power elements 21 is conducted to the housing 10 through the upper side of the heat sink 15 to achieve cooling of the power elements 21.

[0074] In another alternative embodiment, see Figure 6 The control circuit board 20 is arranged below the fixed block 14 and the heat sink 15. Specifically, the control circuit board 20 is fixed on the lower side of the fixed block 14. The side of the control circuit board 20 provided with the power element 21 is arranged toward the base. The control circuit board 20 is fixedly connected to the fixed block 14 by screws penetrating the screw holes 16 and the connection holes. At the same time, it is necessary to make the multiple power elements 21 correspond to the heat sink 15 in the axial direction. The heat generated by the power element 21 is firstly conducted from the control circuit board to the heat sink 15, and then to the housing 10, so as to realize the cooling of the power element 21.

[0075] In the above two embodiments, when the control circuit board 20 is installed in the housing 10, it is necessary to first ensure that the positions of the multiple power components 21 correspond to the heat sink 15, and then make the connection holes on the control circuit board 20 correspond to the screw holes 16 on the fixing block 14, and then fix the control circuit board 20 on the fixing block 14. This installation method can ensure that the multiple power components 21 correspond to the heat sink 15 in the axial direction, so that the heat of the power components 21 can be directly conducted to the housing 10 through the contact area between the two, and dissipated to the external air through the housing 10, so as to achieve cooling of the power components 21.

[0076] Example 2: Reference Figure 8-9 , the control circuit board is fixed in the housing through a fixing block and a heat sink, and the heat sink is used to cool multiple power components. At least one screw hole 16 is provided on the fixing block 14 along the axial direction, and at least one screw hole 16 is provided on the heat sink 15 along the axial direction, that is, the control circuit board 20 is fixed in position in the housing 10 through the fixing block 14 and the heat sink 15. Furthermore, the number of the fixing blocks 14 and the heat sink 15 and the number of screw holes 16 on the fixing blocks 14 and the heat sink 15 can be set by those skilled in the art according to actual needs. For example: the fixed heat dissipation unit includes a fixing block 14 and a heat sink 15, the size of the heat sink 15 is relatively large, covering the size of multiple power components 21, and two screw holes 16 are provided on one heat sink 15, and three screw holes 16 are used to perform three-point positioning of the control circuit board 20, thereby achieving a stable positioning of the control circuit board 20 in the housing 10. A plurality of connection holes are arranged along the outer circumference of the control circuit board 20, and the control circuit board 20 is fixedly connected with the fixing block 14 and the heat dissipation block 15 by screws penetrating the connection holes and screw holes 16. In this embodiment, the position of the control circuit board 20 in the housing 10 is fixed by the fixing block 14 and the heat dissipation block 15, and both the fixing block 14 and the heat dissipation block 15 serve as carriers for carrying and fixing the control circuit board 20. The heat dissipation block 15 not only has the function of cooling the power element 21, but also has the function of fixing and connecting the control circuit board 20. Therefore, this embodiment can reduce the number of fixing blocks 14 on the basis of the heat dissipation block 15, simplify the processing technology and cost, and is a more preferred implementation.

[0077] In this embodiment, the control circuit board 20 is fixedly connected to the fixing block 14 and the heat dissipation block 15, so that the position of the control circuit board 20 in the housing 10 is fixed. Further, the relative position of the control circuit board 20 and the fixing block 14 and the heat dissipation block 15 includes two embodiments, which are as follows:

[0078] In an optional embodiment, the control circuit board 20 is arranged above the fixed block 14 and the heat sink 15, specifically, the control circuit board 20 is fixed on the upper side of the fixed block 14 and the heat sink 15, and the side of the control circuit board 20 provided with the power element 21 is arranged toward the upper side of the fixed block 14 and the heat sink 15, and the control circuit board 20 is fixedly connected with the fixed block 14 and the heat sink 15 by screws penetrating the screw holes 16 and the connection holes. At the same time, it is necessary to make the multiple power elements 21 correspond to the heat sink 15 in the axial direction, and the heat generated by the power elements 21 is conducted to the housing 10 through the upper side of the heat sink 15 to achieve cooling of the power elements 21.

[0079] In another optional embodiment, the control circuit board 20 is arranged below the fixed block 14 and the heat sink 15, specifically, the control circuit board 20 is fixed on the lower side of the fixed block 14 and the heat sink 15, and the side of the control circuit board 20 provided with the power element 21 is arranged toward the base, and the control circuit board 20 is fixedly connected with the fixed block 14 and the heat sink 15 by screws penetrating the screw holes 16 and the connection holes. At the same time, the multiple power elements 21 correspond to the heat sink 15 in the axial direction, and the heat generated by the power elements 21 is first conducted from the control circuit board to the heat sink 15, and then to the housing 10, so as to realize the cooling of the power elements 21.

[0080] In the above two embodiments, when the control circuit board 20 is installed in the housing 10, it is necessary to first ensure that the positions of the multiple power components 21 correspond to the heat sink 15, and then make the connection holes on the control circuit board 20 correspond to the screw holes 16 on the fixing block 14 and the screw holes 16 on the heat sink 15, and then fix the control circuit board 20 on the fixing block 14 and the heat sink 15. This installation method can ensure that the heat sink 15 completely covers the power components 21, so that the heat of the power components 21 is conducted to the housing 10, and dissipated to the external air through the housing 10, so as to achieve cooling of the power components 21.

[0081] Specifically, in this embodiment, in order to facilitate the fixing of the fixed block 14 and the heat dissipation block 15 in the housing 10, another embodiment is disclosed in the present application, that is, a partition plate 13 is provided in the housing 10 for fixing the fixed block 14 and the heat dissipation block 15, and the housing 10 can also be divided into two cavities. Figure 8-Figure 10, this embodiment is a preferred embodiment. Specifically, in this embodiment, a partition plate 13 is provided in the housing 10. The partition plate 13 is fixedly connected to the inner wall of the housing 10, and the partition plate 13 is configured to separate the inner cavity formed by the housing 10 and the base 11 into a first cavity 100 and a second cavity 101. Further, one side of the partition plate 13 and the housing 10 form the first cavity 100, and the other side of the partition plate 13 and the housing 10 and the base 11 form the second cavity 101. The stator assembly 12 is arranged in the first cavity 100, and the control unit 2 is arranged in the second cavity 101. The partition plate 13 and the housing 10 can be fixedly connected by integral molding or by welding. In this embodiment, the partition plate 13 preferably extends radially and is in the shape of a straight plate. Of course, the partition plate 13 can also be inclined at a certain angle, as long as it can achieve the purpose of fixing the fixing block 14 and the heat dissipation block 15 while separating the inner cavity formed by the housing 10 and the base 11 into two cavities. The first cavity 100 is partially connected to the second cavity 101 so that the stator winding 121 can be inserted into the first cavity 100 and the second cavity 101 .

[0082] Specifically, in the present embodiment, the fixed block 14 and the heat sink 15 are both fixed on a side surface of the partition plate 13 adjacent to the control unit 2. The fixed blocks 14 and the heat sink 15 are arranged at intervals along the circumferential direction, and the number of the fixed blocks 14 and the heat sink 15 can be set by a person skilled in the art according to actual needs. Since one side of the fixed block 14 and the heat sink 15 is fixedly connected to the partition plate 13, the control circuit board 20 can only be configured on a side surface of the fixed block 14 and the heat sink 15 away from the partition plate 13. The control circuit board 20 is fixed in position in the housing 10 by the fixed block 14 or the fixed block 14 and the heat sink 15, and it is necessary to ensure that the heat sink 15 and the power element 21 correspond in the axial direction, so that the heat sink 15 can transfer the heat of the power element 21 to the housing 10 and dissipate it to the external air to achieve cooling of the power element 21.

[0083] Further, the control circuit board 20 can be fixed in the housing 10 by fixing it with the fixing block 14, or the fixing block 14 and the heat sink 15 can be fixed at the same time. Specifically, the control circuit board 20 is fixedly connected to the fixing block 14, and the connection holes on the control circuit board 20 correspond to the screw holes 16 on the fixing block 14, and the control circuit board 20 is fixed to the fixing block 14 by screwing through the screw holes 16 and the connection holes. The number of screw holes 16 on the fixing block 14 is determined by those skilled in the art according to actual needs, and the number of screw holes 16 set must be equal to the number of connection holes to ensure that the control circuit board 20 can be firmly fixed in the housing 10. Alternatively, the control circuit board 20 is fixedly connected to the fixing block 14 and the heat sink 15, and the connection holes on the control circuit board 20 correspond to the screw holes 16 on the fixing block 14 and the screw holes 16 on the heat sink 15, and the control circuit board 20 is fixed to the fixing block 14 and the heat sink 15 by screwing through the screw holes 16 and the connection holes. The number of screw holes 16 on the fixing block 14 and the number of screw holes 16 on the heat dissipation block 15 are determined by technicians in this field according to actual needs. The total number of screw holes 16 must be equal to the number of connecting holes to ensure that the control circuit board 20 can be firmly fixed in the housing 10.

[0084] Specifically, in this embodiment, refer to Figure 10-11 , a plurality of through holes 130 are provided on the partition plate 13. The first cavity 100 is partially connected to the second cavity 101 through the through holes 130. The through holes 130 are configured to penetrate the lead-out ends 1210 of the stator windings 121. The lead-out ends 1210 of the stator windings 121 are penetrated in the first cavity 100 and the second cavity 101 through the through holes 130. The lead-out ends 1210 of the stator windings 121 are configured to be electrically connected to the control circuit board 20 in the second cavity 101. Each stator winding 121 has a lead-out end 1210, and at least one lead-out end 1210 of the stator winding 121 is correspondingly penetrated in each through hole 130. The number of through holes 130 can be determined appropriately according to the number of stator windings 121. For example, the magnetic levitation motor 1 includes 6 iron cores 120 and 6 stator windings 121, and the number of through holes 130 can be configured as 3 through holes 130, that is, two lead-out ends 1210 of the stator windings 121 are correspondingly penetrated in each through hole 130. Of course, the number of through holes 130 can also be 2, so that three lead-out ends 1210 of the stator windings 121 are correspondingly penetrated in each through hole 130. Those skilled in the art can determine the number of through holes 130 according to the actual number of lead-out ends 1210 of the stator windings 121, and ensure that the lead-out ends 1210 of the stator windings 121 are electrically connected to the control circuit board 20, while the lead-out ends 1210 of the stator windings 121 penetrated in each through hole 130 will not interfere too much.

[0085] It should be noted that the specific type of the power element 21 in the present application can be selected according to actual needs, and can be configured as an electronic component such as a MOS tube. The present application ingeniously abuts a plurality of MOS tubes against a side of the boss adjacent to the second cavity 101, so that the fixing block 14 or the fixing block 14 and the heat dissipation block 15 can realize the heat transfer of the plurality of power elements 21 to the heat dissipation block 15 through the power element 21 corresponding to the heat dissipation block 15 in the axial direction, and then transfer the heat to the housing 10, so that the heat of the plurality of power elements 21 is dissipated to the outside air through the housing 10, thereby realizing the cooling of the plurality of power elements 21. The present application does not need to set additional heat dissipation fins on the power element 21, which ensures the miniaturization of the magnetic levitation motor 1. In addition, the heat dissipation of multiple power elements 21 is carried out by combining the heat dissipation block 15 and the shell 10. Since the shell 10 is in direct contact with the outside air, and the outside air is all refrigerant, the heat on the shell 10 can be well transferred to the outside, and heat exchange with the outside air is carried out, and the heat dissipation effect is better. However, the heat dissipation fins set on the power element 21 are still located inside the magnetic levitation motor 1, and the heat dissipation effect is relatively poor, and the heat is not easy to dissipate. Therefore, the heat dissipation is carried out by combining the heat dissipation block 15 and the shell 10, which greatly improves the heat dissipation efficiency and heat dissipation effect.

[0086] Specifically, in the present embodiment, a plurality of other electronic components are also provided on the control circuit board 20. The plurality of other electronic components are arranged on one side of the power element 21. The space surrounded by at least one fixing block 14 and at least one heat sink block 15 is configured as a receiving cavity. The receiving cavity is configured to receive a plurality of other electronic components, so that the fixing block 14 or the fixing block 14 and the heat sink block 15 can fix the control circuit board 20 while realizing the placement of a plurality of electronic components in the magnetic levitation motor 1, so that the space utilization in the housing 10 is high and the overall structure of the magnetic levitation motor 1 is compact.

[0087] The present application also discloses a magnetic suspension pump 3, see Fig.13 and Fig.14, including a pump head 30, an impeller rotor 31 and an integrated magnetic levitation motor 1 with an integrated heat dissipation unit. The pump head 30 cover is arranged on the top of the magnetic levitation motor 1 and is fixedly connected to the top of the housing 10 to form a space for placing the impeller rotor 31. The impeller rotor 31 is partially located in the pump head 30 and cooperates with the stator assembly 12. The stator assembly 12 is configured to generate a magnetic field to drive the rotation and suspension of the impeller rotor 31. It should be noted that the impeller rotor 31 can be arranged inside the iron core 120 or outside the iron core 120, and those skilled in the art can arrange it according to actual needs. When the magnetic levitation pump 3 is in working state, the stator winding 121 can magnetically drive and support the rotor without contact in the running state. For the integrated magnetic levitation pump 3 with low power and small size, its internal space is fully utilized, and a fixing block 14 and a heat dissipation block 15 are set on the inner wall of the shell 10. The position of the control circuit board 20 in the shell 10 is fixed by the fixing block 14 or the fixing block 14 and the heat dissipation block 15, and the cooling of multiple power components 21 is achieved by the heat dissipation block 14, which not only solves the problem that the control circuit board 20 in the integrated magnetic levitation motor 1 is difficult to fix, but also solves the problem that the large amount of heat generated by the power component 21 during operation cannot be dissipated, while ensuring the miniaturization and compactness requirements of the magnetic levitation pump 3.

[0088] The utility model uses specific embodiments to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the utility model. At the same time, for ordinary technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. An integrated magnetic levitation motor with an integrated heat dissipation unit, the magnetic levitation motor comprising a housing (10), a base (11), a stator assembly (12) and a control unit (2) arranged in the housing, the base being fixedly connected to one end of the housing, the stator assembly comprising a plurality of iron cores (120) and a plurality of stator windings (121), at least one stator winding being wound around each of the iron cores, the stator winding being electrically connected to the control unit, and characterized in that: The control unit comprises a control circuit board (20) and a plurality of power elements (21) arranged thereon, and a heat dissipation unit is also arranged in the shell, the heat dissipation unit is arranged along the inner wall of the shell and is fixedly connected to the shell, the heat dissipation unit is arranged on one side of the control circuit board, the heat dissipation unit corresponds to the plurality of power elements in the axial direction, and the heat dissipation unit is arranged to conduct heat of the plurality of power elements to the shell to cool the plurality of power elements.

2. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 1, characterized in that: The heat dissipation unit is configured as at least one heat dissipation block (15), which is configured along the inner wall of the shell. The at least one heat dissipation block is integrally formed with the shell. The multiple power elements are electrically connected to the control circuit board and are configured at intervals. The at least one heat dissipation block corresponds to the multiple power elements in the axial direction to dissipate heat for the multiple power elements.

3. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 2, characterized in that: The at least one heat dissipation block is parallel to the opposite surfaces between the multiple power components, and the maximum surface area of ​​the side of the at least one heat dissipation block adjacent to the multiple power components is greater than or equal to the maximum surface area of ​​the side of the multiple power components adjacent to the at least one heat dissipation block.

4. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 3, characterized in that: The multiple power elements are fixed on the upper side of the control circuit board, the at least one heat sink is arranged above the control circuit board, the lower side of the at least one heat sink is in contact with the upper side of the multiple power elements, and the heat of the multiple power elements is first conducted to the at least one heat sink and then to the shell.

5. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 3, characterized in that: The multiple power elements are fixed on the lower side of the control circuit board, the at least one heat sink is arranged above the control circuit board and abuts against the upper side of the control circuit board, the control circuit board is provided with multiple vias (17) along the axial direction, each via is filled with a heat conducting material, and the heat of the multiple power elements is firstly conducted from the heat conducting material in the via to the at least one heat sink, and then conducted to the housing.

6. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 2, characterized in that: The plurality of power elements are arranged in an arc shape along the outer circumference of the control circuit board, and the at least one heat sink is arranged in an arc shape along the circumferential direction; Alternatively, the plurality of power elements are arranged in a row toward the central axis of the control circuit board, and the at least one heat sink is arranged toward the central axis of the control circuit board.

7. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 2, characterized in that: The at least one heat sink block is also configured to fix the control circuit board. The heat sink block is provided with at least one screw hole (16) along the axial direction. The control circuit board is correspondingly provided with a plurality of connection holes, each of which corresponds to one screw hole. The control circuit board and the heat sink block are fixedly connected by screws passing through the connection holes and the screw holes.

8. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 2, characterized in that: A fixing unit is also provided in the shell. The fixing unit is arranged on the inner wall of the shell and fixedly connected thereto. The fixing unit is configured to fix the control circuit board.

9. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 8, characterized in that: The fixing unit is configured as at least one fixing block (14), the at least one fixing block is arranged in a circumferential direction along the inner wall of the shell, the at least one fixing block is integrally formed with the shell, each of the fixing blocks is provided with at least one screw hole along the axial direction, the control circuit board is provided with a plurality of connection holes along the outer circumference, and the control circuit board and the fixing block are fixedly connected by screws passing through the connection holes and the screw holes.

10. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 8, characterized in that: The fixing unit is configured as at least one clip, each of which includes a male clip and a female clip, the male clip is arranged along the circumferential direction and fixedly connected to the inner wall of the shell, the female clip is fixed to the outer edge of the control circuit board, and the female clip is snapped into engagement with the male clip in a one-to-one correspondence to achieve a fixed connection between the control circuit board and the shell.

11. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 8, characterized in that: A partition plate (13) is also provided in the shell, the partition plate is fixed on the inner wall of the shell and the two are integrally formed, the partition plate is configured to separate the inner cavity formed by the shell and the base into a first cavity and a second cavity, the stator assembly is arranged in the first cavity, and the control unit is arranged in the second cavity.

12. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 11, characterized in that: The at least one heat sink block and the fixing unit are both fixed on a side surface of the partition plate adjacent to the control unit, the control circuit board is arranged on a side surface of the at least one heat sink block and the fixing unit away from the partition plate, and is fixed in the shell through the fixing unit and / or the at least one heat sink block.

13. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 11, characterized in that: The partition plate is provided with a through hole (130), the first cavity and the second cavity are partially connected through the through hole, and the lead end of the stator winding is passed through the through hole into the second cavity and is electrically connected to the control circuit board.

14. The integrated magnetic levitation motor with integrated heat dissipation unit according to claim 8, characterized in that: The control circuit board is also provided with a plurality of other electronic components, and the space formed by the fixing unit and the heat dissipation block is configured as a receiving cavity, and the receiving cavity is configured to receive the plurality of other electronic components.

15. A magnetic levitation pump, characterized in that: An integrated magnetic levitation motor comprising a pump head (30), an impeller rotor (31) and an integrated heat dissipation unit as described in any one of claims 1 to 14, wherein the pump head cover is arranged on the top of the magnetic levitation motor and is fixedly connected thereto, the impeller rotor portion is located in the pump head and cooperates with a stator assembly, and the stator assembly is configured to generate a magnetic field to drive the impeller rotor to rotate and levitate.

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