A compact air-cooled unit

Abstract

The invention discloses a compact air-cooling unit, comprising a chassis, a power device and a generator which are coaxially connected and arranged adjacent to each other in the chassis, wherein one end of the generator motor shaft away from the power device extends to the outside of the generator but does not pass through the chassis, and a chassis cooling fan is fixed on the extended section of the motor shaft extending to the outside of the generator, and the generator comprises a PCB board stator coaxially arranged with the motor shaft, and an electronic module. The compact air-cooling unit adopts a PCB board generator with a smaller volume and mass, so that an existing generator set with the same volume has a space inside for the motor shaft to extend outside the generator, which is convenient for installing the chassis cooling fan, that is, on the basis of the existing generator set, the chassis cooling fan can be installed on the generator motor shaft without increasing the overall volume of the generator set, thereby improving the heat dissipation effect in the chassis.

Description

Technical Field

[0001] The invention relates to a motor, in particular to a compact air-cooling unit. Background Art

[0002] In order to achieve heat dissipation in the chassis, the existing generator sets often install exhaust fans on the two side walls of the chassis. Since the exhaust fans are independent of the generator and the power device, when the generator set is working, the exhaust fans may be damaged while the generator and the power device are working normally. At this time, the heat dissipation effect in the chassis cannot be guaranteed. In addition, due to the limited installation space, the volume and power of the exhaust fans are generally small, and the heat dissipation effect in the chassis is poor, which can easily lead to damage to the generator and the power device. In order to solve the above problems, it is proposed to fix the chassis cooling fan on the generator shaft outside the generator and inside the chassis. The chassis cooling fan is directly driven by the generator and indirectly driven by the power device. Although this can ensure uninterrupted heat dissipation during the operation of the power device and the generator, and compared with the small exhaust fans installed on the side walls of the traditional chassis, the chassis cooling fan indirectly driven by the power device has greater power and better heat dissipation effect, it requires the generator shaft to be extended to the outside of the generator, and the chassis cooling fan needs to be installed in the chassis. This greatly increases the volume and mass of the generator set on the basis of the existing generator set, thereby limiting the application of the generator set in places with small volume and mass requirements. Summary of the invention

[0003] The object of the present invention is to provide a compact air-cooling unit.

[0004] A compact air-cooled unit includes a chassis, a power device and a generator that are coaxially connected and adjacent to each other in the chassis, one end of the generator motor shaft away from the power device extends to the outside of the generator but does not pass through the chassis, and a chassis cooling fan is fixed on the extended section of the motor shaft extending outside the generator, the generator includes a PCB stator coaxially arranged with the motor shaft, and an electronic module, the two sides of the PCB stator are symmetrical and outwardly provided with a magnetic steel rotor, a heat dissipation shell and an end cover in sequence, the heat dissipation shell is fixed on the motor shaft, and the end cover is rotatably sleeved on the motor shaft A first mounting groove is provided in the middle of the end cover, the heat dissipation shell on one side is located in the first mounting groove of the end cover on the same side, a plurality of radially scattered first partitions are provided on a side surface of the heat dissipation shell close to the end cover along its circumference, a plurality of air inlets are provided through-through along its circumference on the end surface of the first mounting groove of the end cover, a plurality of through-through air outlets are provided on the circumferential side wall of the first mounting groove of the end cover, a second mounting groove is provided on the end cover, the electronic module is located in the second mounting groove, the magnetic steel rotor is evenly distributed and fixed along the circumference of the heat dissipation shell, and the two end covers are assembled and fixedly connected.

[0005] Furthermore, the electronic module is integrated on the PCB stator. This arrangement can further reduce the overall volume and mass of the generator.

[0006] Further, the PCB stator is an annular structure, the heat dissipation shells on both sides of the PCB stator are made of magnetic material, a magnetic conductive block is coaxially arranged between the two heat dissipation shells and inside the PCB stator, the magnetic conductive block is sleeved on the motor shaft, a non-magnetic conductive ring located inside the PCB stator is sleeved on the magnetic conductive block, the two heat dissipation shells are sleeved on the motor shaft and contact the magnetic conductive block, the magnetic steel rotor fixed on the heat dissipation shell is a convex block protruding outward from the side of the heat dissipation shell close to the PCB stator, and the PCB stator is fixedly connected to the end cover. After the two heat dissipation shells made of magnetic material contact with the magnetic conductive block in the middle, a magnet is formed, and after the external leakage magnetic field of the inner and outer ring edges of the magnetic conductive block is shielded by the motor shaft and the non-magnetic conductive ring, the convex blocks on the sides of the two heat dissipation shells close to the PCB stator and the path between the corresponding positions is the shortest, forming a magnetic circuit, which is used as a magnetic steel rotor. That is, under this structure, the magnetic steel rotor and the heat dissipation shell are an integrated structure, which avoids the cumbersome installation of the magnetic steel rotor on the small heat dissipation shell, and its structure is simple and firm.

[0007] Furthermore, reinforcing rings are fixed on both sides of the PCB stator. The material of the PCB stator makes it not resistant to high temperature, that is, the PCB stator is more likely to be deformed and damaged at high temperature. The setting of the reinforcing ring increases the structural strength of the PCB stator, which can effectively avoid deformation and damage of the magnetic steel PCB stator and increase the service life of the motor as a whole.

[0008] Furthermore, the two reinforcing rings are both located at the radial inner edge of the PCB stator. This arrangement strengthens and fixes the inner and outer sides of the PCB stator in the radial direction, and the PCB stator has better firmness.

[0009] Further, the PCB board stator includes at least one single-phase stacked plate, and the single-phase stacked plate includes an upper plate and a lower plate. A plurality of first spiral coil units and second spiral coil units are respectively arranged on the upper plate and the lower plate along their circumferences. The number and distribution positions of the first spiral coil units on the upper plate are the same as the number and distribution positions of the second spiral coil units on the lower plate. The inner end of the first spiral coil unit on the upper plate and the inner end of the second spiral coil unit at the corresponding position on the lower plate, the outer end of the first spiral coil unit on the upper plate and the outer end of the second spiral coil unit adjacent to the same rotation direction on the lower plate are all at the same position. One end of any first spiral coil unit on the upper plate and one end of the second spiral coil unit corresponding to the end position on the lower plate serve as input and output terminals respectively. Except for the input and output terminals, the inner end of the first spiral coil unit on the upper plate and the inner end of the second spiral coil unit at the corresponding position on the lower plate, and the outer end of the first spiral coil unit on the upper plate and the outer end of the second spiral coil unit adjacent to the same rotation direction on the lower plate are all connected through wire passing posts. By reasonably arranging the structure and position of the first spiral coil unit and the second spiral coil unit on the upper and lower plates, the first spiral coil unit and the second spiral coil unit on the upper and lower plates are connected in sequence, thereby forming a single-phase laminated plate with a single-phase coil winding. The first spiral coil unit and the second spiral coil unit on the upper and lower plates are connected and arranged uninterruptedly. The widths of the first spiral coil unit and the second spiral coil unit are the same everywhere, thereby avoiding a large amount of calculations to ensure that the widths of the coil windings formed are the same in each section during design. When connecting the first spiral coil unit and the second spiral coil unit, only the inner and outer ends need to be connected through holes respectively. The manufacture is simple, especially when manufacturing a three-phase or multi-phase PCB board motor, because a single-phase laminated plate forms an independent single-phase coil winding, it is only necessary to stack three or more single-phase laminated plates coaxially and evenly staggered at an angle on the circumference. The coil windings on each single-phase laminated plate do not all or partly share the single-phase laminated plate that constitutes the PCB board stator, so the independence is good, and the PCB board stator is simple to manufacture with high efficiency.

[0010] Furthermore, the number of single-phase stacked plates is several, and the several single-phase stacked plates are coaxial and evenly stacked at an angle on the circumference. This arrangement can form a corresponding number of multi-phase lightweight compact motors.

[0011] Furthermore, there are a plurality of PCB board stators, which are coaxially arranged, and magnetic steel rotors are coaxially arranged on both sides of each PCB board stator. The combination of a plurality of PCB board stators and magnetic steel rotors on both sides can increase the output power of the compact open air-cooled unit, thereby enabling it to meet various different application scenarios.

[0012] Furthermore, the two magnetic steel rotors between the two adjacent PCB board stators are an integrated structure. Compared with the two magnetic steel rotors between the two adjacent PCB board stators being separately arranged, this structure can make the overall volume and mass of the lightweight and compact motor smaller.

[0013] The compact air-cooled unit of the present invention adopts a PCB board generator with a small volume and mass, and on this basis, the generator magnetic steel rotor is fixed on a heat dissipation shell that plays a heat dissipation role. The heat dissipation shell in the PCB board generator is used to fix the magnetic steel rotor on the one hand, and on the other hand, radial wind can be formed under the action of the first partition plate thereon during rotation to dissipate heat for the generator. The dual-purpose heat dissipation shell makes the structure of the PCB board generator more compact and simple, and further enables the existing generator set of the same volume to have a space for the motor shaft to extend outside the generator, which is convenient for the installation of the chassis heat dissipation fan. That is, on the basis of the existing generator set, the chassis heat dissipation fan can be installed on the generator motor shaft without increasing the overall volume of the generator set, thereby improving the heat dissipation effect in the chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a front perspective structure of a first embodiment of the present invention;

[0015] Figure 2 It is a schematic structural diagram of a generator according to a first embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the assembly structure of a generator according to a first embodiment of the present invention;

[0017] Figure 4 A schematic diagram of a half-section structure of a generator according to a first embodiment of the present invention without an end cover;

[0018] Figure 5 This is a schematic diagram of the stacked structure of a single PCB stator of a generator according to a first embodiment of the present invention;

[0019] Figure 6 A schematic structural diagram of an upper plate of a single-phase stacked plate of a generator according to a first embodiment of the present invention;

[0020] Figure 7 It is a schematic structural diagram of a lower plate of a single-phase stacked plate of a generator according to a first embodiment of the present invention;

[0021] Figure 8 A schematic diagram of the connection structure of a first spiral coil unit and a second spiral coil unit of a single-phase stacked plate of a generator according to a first embodiment of the present invention;

[0022] Fig. 9A schematic diagram of the connection structure of a first spiral coil unit and a second spiral coil unit of a plurality of single-phase stacked plates in a first embodiment of the present invention;

[0023] Fig.10 This is a schematic diagram of the assembly structure of a generator according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0024] Figures 1 to 9 FIG. 1 shows a first embodiment of a lightweight and compact mechatronic machine according to the present invention. Figures 1 to 4 As shown, the compact air-cooled unit of the present invention comprises a chassis 300, a power device 100 and a generator 200 which are adjacently coaxially connected and arranged in the chassis 300, one end of the generator motor shaft 6 away from the power device 100 extends to the outside of the generator 200 but does not pass through the chassis 300, and a chassis cooling fan 301 is fixed on the motor shaft extension section extending to the outside of the generator 200, the generator 200 comprises a PCB stator 1 coaxially arranged with the motor shaft 6, and an electronic module 2, the two sides of the PCB stator 1 are symmetrically and outwardly provided with a magnetic steel rotor 3, a heat dissipation shell 4 and an end cover 5 in sequence, the heat dissipation shell 4 is fixed on the motor shaft 6, and the end cover 5 can be rotatable. The end cover 5 is movably sleeved on the motor shaft 6, a first mounting groove 51 is provided in the middle of the end cover 5, the single-sided heat dissipation shell 4 is located in the first mounting groove 51 of the end cover 5 on the same side, a plurality of radially scattered first partitions 41 are provided on a side surface of the heat dissipation shell 4 close to the end cover 5 along its circumference, a plurality of air inlets 52 are provided on the end surface of the first mounting groove 51 of the end cover along its circumference, a plurality of through air outlets 53 are provided on the circumferential side wall of the first mounting groove 51 of the end cover, a second mounting groove 54 is provided on the end cover 5, the electronic module 2 is located in the second mounting groove 54, the magnetic steel rotor 3 is evenly distributed and fixed along the circumference of the heat dissipation shell 4, and the two end covers 5 are assembled and fixedly connected.

[0025] like Figure 3 As shown, the electronic module 2 is integrated on the PCB stator 1. This arrangement can further reduce the overall volume and mass of the generator.

[0026] like Figure 3 and Figure 4As shown, the PCB board stator 1 is an annular structure, the heat dissipation shells 4 on both sides of the PCB board stator 1 are made of magnetic material, a magnetic conductive block 7 is coaxially arranged between the two heat dissipation shells 4 and inside the PCB board stator 1, the magnetic conductive block 7 is sleeved on the motor shaft 6, and a non-magnetic conductive ring 8 located inside the PCB board stator 1 is sleeved on the magnetic conductive block 7, the two heat dissipation shells 4 are sleeved on the motor shaft 6 and contact with the magnetic conductive block 7, the magnetic steel rotor 3 fixed on the heat dissipation shell 4 is a convex block protruding outward from the side of the heat dissipation shell 4 close to the PCB board stator 1, and the PCB board stator 1 is fixedly connected to the end cover 5. After the two heat dissipation shells 4 made of magnetic material come into contact with the magnetic conductive block 7 in the middle, a magnet is formed. After the external leakage magnetic field of the inner and outer ring edges of the magnetic conductive block 7 is shielded by the motor shaft 6 and the non-magnetic conductive ring 8, the side surfaces of the two heat dissipation shells 4 close to the stator 1 of the PCB board are convex and the path between the corresponding protrusions is the shortest, forming a magnetic circuit, which is used as the magnetic steel rotor 3. That is, under this structure, the magnetic steel rotor 3 and the heat dissipation shell 4 are an integrated structure, which avoids the cumbersome installation of the magnetic steel rotor 3 on the small-volume heat dissipation shell 4, and its structure is simple and firm.

[0027] like Figure 3 and Figure 4 As shown, reinforcing rings 14 are respectively fixed on both side surfaces of the PCB stator 1. The material of the PCB stator 1 makes it not resistant to high temperature, that is, the PCB stator 1 is more likely to be deformed and damaged at high temperature. The setting of the reinforcing ring 14 increases the structural strength of the PCB stator 1, can effectively avoid deformation and damage of the magnetic steel PCB stator 1, and improve the service life of the motor as a whole.

[0028] like Figure 3 and Figure 4 As shown, the two reinforcing rings 14 are both located at the radial inner edge of the PCB stator 1. This arrangement strengthens and fixes the inner and outer sides of the PCB stator 1 in the radial direction, and the PCB stator 1 has better firmness.

[0029] like Figures 5 to 9As shown, the PCB stator 1 includes at least one single-phase laminated plate 10, and the single-phase laminated plate 10 includes an upper plate and a lower plate (11, 12), and the upper plate and the lower plate (11, 12) are respectively provided with a plurality of first spiral coil units 111 and second spiral coil units 121 along their circumferences, the number and distribution positions of the first spiral coil units 111 on the upper plate 11 are the same as the number and distribution positions of the second spiral coil units 121 on the lower plate 12, the inner end of the first spiral coil unit 111 on the upper plate 11 is connected to the inner end of the second spiral coil unit 121 at a corresponding position on the lower plate 12, and the outer end of the first spiral coil unit 111 on the upper plate 11 is connected to the same position on the lower plate 12. The outer ends of adjacent second spiral coil units 121 in the rotation direction are located at the same position, one end of any first spiral coil unit 111 on the upper plate 11 and one end of the second spiral coil unit 121 corresponding to the end on the lower plate 12 are respectively used as the input and output ends (112, 122), and except for the input and output ends (112, 122), the inner end of the first spiral coil unit 111 on the upper plate 11 and the inner end of the second spiral coil unit 121 at the corresponding position on the lower plate 12, and the outer end of the first spiral coil unit 111 on the upper plate 11 and the outer end of the adjacent second spiral coil unit 121 in the same rotation direction on the lower plate 12 are all connected through the wire column 13. By reasonably arranging the structure and position of the first spiral coil unit 111 and the second spiral coil unit 121 on the upper and lower plates (11, 12), the first spiral coil unit 111 and the second spiral coil unit 121 on the upper and lower plates (11, 12) are sequentially connected, thereby forming a single-phase stacked plate 10 with a single-phase coil winding. The first spiral coil unit 111 and the second spiral coil unit 121 on the upper and lower plates (11, 12) are connected and arranged uninterruptedly, and the widths of the first spiral coil unit 111 and the second spiral coil unit 121 are the same everywhere, thereby avoiding the problem of designing to ensure the formation of A large number of calculations are performed because the width of each section of the coil winding is the same, and when connecting each first spiral coil unit 111 and the second spiral coil unit 121, only the inner and outer ends need to be connected through holes respectively. The production is simple, especially when making a three-phase or multi-phase PCB board motor, because a single-phase laminated plate 10 forms an independent single-phase coil winding, it is only necessary to stack three or more single-phase laminated plates 10 coaxially and evenly staggered at an angle on the circumference. The coil windings on each single-phase laminated plate 10 do not all or partly share the single-phase laminated plate 10 that constitutes the PCB board stator 1, so the independence is good, and the PCB board stator 1 is simple to manufacture and efficient.

[0030] like Figure 5 and Fig. 9 As shown, there are a plurality of single-phase stacked plates 10, which are coaxial and evenly stacked at an angle on the circumference. This arrangement can form a corresponding number of multi-phase lightweight compact motors.

[0031] In the first embodiment of the present invention, the chassis cooling fan 301 is used for heat dissipation in the chassis 300; the power device 100 is used to drive the coaxially arranged generator 200 and the chassis cooling fan 301 arranged on the motor shaft 6 of the generator 200. In order to extend the motor shaft 6 of the generator to the outside 200 of the generator and the inside of the chassis 300 without increasing the volume and mass of the existing chassis, and thus facilitate the installation of the chassis cooling fan 301, the compact air-cooled unit of the present invention, the electronic module 2 that mainly generates heat in the generator 200 is placed in the second installation groove 54 of the fixed end cover 5, and the heat is transferred to the end covers 5 on both sides to increase the heat dissipation surface; when the heat dissipation shell 4 on the same side rotates, it drives the magnetic steel rotor 3 on it, and at the same time forms radial wind under the action of the first partition plate 41 on its outer surface; the heat dissipation shell 4 on the same side is located in the first installation groove 51 of the end cover 5 on the same side, so that the radial wind generated by the heat dissipation shell 4 flows to the end cover 5 on the same side to achieve heat dissipation of the end cover 5 on the same side. Specifically, the heat dissipation air in the generator 200 enters through the air inlet 52 on the end cover 5 , and is discharged through the air outlet 53 on the end cover 5 under the action of the heat dissipation shell 4 .

[0032] The compact air-cooled unit of the present invention adopts a PCB board generator 200 with a small volume and mass, and on this basis, the magnetic steel rotor 3 of the generator 200 is fixed on a heat dissipation shell 4 that plays a heat dissipation role. The heat dissipation shell 4 in the PCB board generator 200 is used to fix the magnetic steel rotor on the one hand, and on the other hand, when rotating, radial wind can be formed under the action of the first partition plate 41 thereon to dissipate heat for the generator 200. The dual-purpose heat dissipation shell 4 makes the structure of the PCB board generator 200 more compact and simple, thereby enabling the existing generator set of the same volume to have a space for the motor shaft 6 to extend outside the generator 200, which is convenient for the installation of the chassis heat dissipation fan 301, that is, on the basis of the existing generator set, the chassis heat dissipation fan 301 can be installed on the generator motor shaft 6 without increasing the overall volume of the generator set, thereby improving the heat dissipation effect in the chassis 300.

[0033] Fig.10 The second embodiment of the compact air-cooled unit of the present invention is shown. The difference between the second embodiment of the present invention and the first embodiment is that there are a plurality of PCB board stators 1 in the generator 200, and the plurality of PCB board stators 1 are coaxially arranged, and a magnetic steel rotor 3 is coaxially arranged on both sides of each PCB board stator 1. The two magnetic steel rotors 3 between two adjacent PCB board stators 1 are an integrated structure.

[0034] In the third embodiment of the present invention, the combination of multiple PCB stators 1 and magnetic steel rotors 3 on both sides can increase the output power of the generator 200, so that it can meet various application scenarios. The two magnetic steel rotors 3 between two adjacent PCB stators 1 are an integrated structure, which can make the overall volume and mass of the generator 200 smaller than the two magnetic steel rotors 3 between two adjacent PCB stators 1 being separately arranged.

Claims

1. A compact air-cooled unit, comprising a chassis, a power device and a generator arranged in the chassis and connected coaxially adjacent to each other, characterized in that: One end of the generator motor shaft away from the power device extends to the outside of the generator but does not pass through the chassis. A chassis cooling fan is fixed on the extended section of the motor shaft extending outside the generator. The generator includes a PCB stator coaxially arranged with the motor shaft and an electronic module. The two sides of the PCB stator are symmetrically and outwardly provided with a magnetic steel rotor, a heat dissipation shell and an end cover in sequence. The heat dissipation shell is fixed on the motor shaft, and the end cover is rotatably sleeved on the motor shaft. A first mounting groove is provided in the middle of the end cover. The heat dissipation shell on one side is located in the first mounting groove of the end cover on the same side. A plurality of radially scattered first partitions are provided along the circumference of the heat dissipation shell on a side surface close to the end cover. A plurality of air inlets are provided along the circumference of the end surface of the first mounting groove of the end cover. A plurality of through air outlets are provided on the circumferential side wall of the first mounting groove of the end cover. A second mounting groove is provided on the end cover. The electronic module is located in the second mounting groove. The magnetic steel rotors are evenly distributed and fixed along the circumference of the heat dissipation shell. The two end covers are assembled and fixedly connected.

2. The compact air-cooled unit according to claim 1, characterized in that: The electronic module is integrated on the stator PCB.

3. The compact air-cooled unit according to claim 1, characterized in that: The PCB stator is an annular structure. The heat dissipation shells on both sides of the PCB stator are made of magnetic material. A magnetic conductive block is coaxially arranged between the two heat dissipation shells and inside the PCB stator. The magnetic conductive block is sleeved on the motor shaft. A non-magnetic conductive ring located inside the PCB stator is sleeved on the magnetic conductive block. The two heat dissipation shells are sleeved on the motor shaft and contact the magnetic conductive block. The magnetic steel rotor fixed on the heat dissipation shell is a convex block protruding outward from the side of the heat dissipation shell close to the PCB stator. The PCB stator is fixedly connected to the end cover.

4. The compact air-cooled unit according to claim 1, characterized in that: Reinforcement rings are respectively fixed on both side surfaces of the stator of the PCB board.

5. The compact air-cooling unit according to claim 4 is characterized in that: The two reinforcement rings are both located at the radial inner edge of the stator of the PCB board.

6. The compact air-cooled unit according to claim 1, characterized in that: The PCB stator includes at least one single-phase laminated plate, which includes an upper plate and a lower plate. A plurality of first spiral coil units and second spiral coil units are respectively arranged on the upper plate and the lower plate along their circumferences. The number and distribution positions of the first spiral coil units on the upper plate are the same as the number and distribution positions of the second spiral coil units on the lower plate. The inner end of the first spiral coil unit on the upper plate and the inner end of the second spiral coil unit at the corresponding position on the lower plate, the outer end of the first spiral coil unit on the upper plate and the outer end of the second spiral coil unit adjacent to the lower plate in the same rotation direction are all located at the same position. One end of any first spiral coil unit on the upper plate and one end of the second spiral coil unit corresponding to the end on the lower plate serve as input and output terminals respectively. Except for the input and output terminals, the inner end of the first spiral coil unit on the upper plate and the inner end of the second spiral coil unit at the corresponding position on the lower plate, and the outer end of the first spiral coil unit on the upper plate and the outer end of the second spiral coil unit adjacent to the lower plate in the same rotation direction are all connected through wire passing posts.

7. The compact air-cooling unit according to claim 6, characterized in that: The number of the single-phase stacked plates is a plurality, and the plurality of single-phase stacked plates are coaxial and stacked evenly at an angle staggered on the circumference.

8. The compact air-cooling unit according to claim 1, characterized in that: There are a plurality of PCB board stators, which are coaxially arranged, and magnetic steel rotors are coaxially arranged on both sides of each PCB board stator.

9. The compact air-cooling unit according to claim 8, characterized in that: The two magnetic steel rotors between the stators of two adjacent PCB boards are an integrated structure.

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