Disc type motor self-circulation water cooling structure for water pump

Abstract

The invention relates to the technical field of motors, in particular to a disc type motor self-circulation water cooling structure for a water pump, which comprises a motor shell, a water pump shell coaxially, hermetically and fixedly connected to the side part of the motor shell, and a motor body, which is mounted in the motor shell, and the output end of which is coaxially and fixedly connected with a rotating shaft, the rotating shaft coaxially penetrates through the motor shell and the water pump shell in a sealed mode. And the water cooling mechanism comprises an impeller, and a water inlet cavity is formed in the water pump shell. The water cooling mechanism is arranged, the impeller rotates and circularly flows in the negative pressure cavity, the water inlet cavity, the water inlet hole, the heat dissipation channel and the water outlet pipe, the heat dissipation channel is zigzag and twisted and is narrow in the middle and wide in the two sides, the complexity of the water flow path and the flow state is improved, the heat dissipation efficiency is improved, and the zigzag and twisted channel is attached to the position of a coil set in the stator disc. Therefore, the heat dissipation effect of the stator disc is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a self-circulating water cooling structure of a disc motor for a water pump. Background Art

[0002] The disc motor has the characteristics of short axial size, compact structure, small rotor eddy current loss, small electromechanical time constant and high power density, and is widely used as a drive motor for transportation equipment and servo systems. However, the motor with high power density is small in size and has higher heat dissipation requirements than traditional motors. Existing disc motors usually adopt a liquid cooling structure with axial circumferential surface to improve the heat dissipation effect.

[0003] In the prior art, a cooling water channel is formed by a plurality of water channel units distributed longitudinally and connected end to end in sequence, and a cooling space is set on the shell of the disc motor, and the cooling space is divided into a plurality of fan-shaped cooling sub-spaces by reinforcing ribs, and adjacent cooling sub-spaces are connected by connecting grooves to form a cooling channel, and the water flow channels in the cooling sub-spaces are made to have the same width by relatively arranged Y-shaped dividing strips and strip-shaped dividing strips, so that the water flow is uniform. In these two methods, the water flow path in the cooling channel structure is short and the flow state is simple, which is not conducive to improving the heat dissipation efficiency, and fails to correspond to the coil group in the stator disk of the motor, which is not conducive to improving the heat dissipation effect in a targeted manner. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the cooling channel structure in the prior art, such as the short water flow path and simple flow state, which is not conducive to improving the heat dissipation efficiency, and the failure to correspond to the coil group in the stator disk of the motor, which is not conducive to targetedly improving the heat dissipation effect, and to propose a self-circulating water cooling structure for a disc motor for a water pump.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A self-circulating water cooling structure of a disc motor for a water pump comprises a motor housing, a water pump housing is coaxially sealed and fixedly connected to the side of the motor housing, and further comprises:

[0007] A motor body, wherein the motor body is installed in the motor housing, and the output end is coaxially fixedly connected with a rotating shaft, and the rotating shaft coaxially seals and penetrates the motor housing and the water pump housing;

[0008] The water cooling mechanism comprises an impeller, a water inlet chamber is provided in the water pump housing, a heat dissipation frame is fixedly connected to the side of the water pump housing away from the motor housing, a negative pressure chamber is provided in the heat dissipation frame, the water inlet chamber and the negative pressure chamber are interconnected and filled with water, the impeller is coaxially fixedly connected to a part of the rotating shaft located in the water inlet chamber, the output direction of the impeller is from the negative pressure chamber to the water inlet chamber, a heat dissipation channel is provided on the side of the water pump housing close to the motor housing, the heat dissipation channel is winding and twisted, and the twisted structure is narrow in the middle and wide on both sides, the heat dissipation channel is in sealing contact with the motor body, a water inlet hole connecting the water inlet chamber and the heat dissipation channel is provided on the water pump housing, and a water outlet pipe is provided in the connecting pipe between the end of the heat dissipation channel away from the water inlet hole and the negative pressure chamber.

[0009] Preferably, a rotating cavity is defined in the water pump housing, and the motor body is installed in the rotating cavity.

[0010] Preferably, the motor body includes a rotor disk and a stator disk, the rotor disk is coaxially fixedly connected to a portion of the rotating shaft located in the rotating chamber, the stator disk is fixedly connected to the water pump housing, and a waterproof insulating pad is sealed and fixedly connected to the water pump housing, and a heat dissipation channel is formed between the waterproof insulating pad and the water pump housing on one side away from the stator disk.

[0011] Preferably, the heat dissipation channel corresponds to the shape of the coil group in the stator disk.

[0012] Preferably, the water pump housing is provided with a plurality of outer mounting holes and inner mounting holes, the plurality of outer mounting holes are spaced apart and located on the outer peripheral side of the heat dissipation channel, the plurality of inner mounting holes are spaced apart and located on the inner peripheral side of the heat dissipation channel, and the stator disk and the waterproof insulating pad are sealed and fixedly connected to the water pump housing through the plurality of outer mounting holes and the inner mounting holes.

[0013] Preferably, the surface of the waterproof insulation pad is integrally formed with a plurality of rubber convexities, the diameter of the end away from the waterproof insulation pad is a structure that is first wide and then narrow, the water pump housing located outside the heat dissipation channel is provided with a plurality of arc grooves, the plurality of arc grooves point to the inner diameter thereof and are a structure that is first narrow and then wide, and the plurality of rubber convexities correspond one by one to the plurality of arc grooves for extrusion and clamping engagement.

[0014] Preferably, the plurality of rubber protrusions correspond to each other one by one and are spaced apart and located in a narrower area of ​​the twisted structure of the heat dissipation channel.

[0015] Preferably, a sealing rubber ring is fixedly connected to the inner side of the motor housing, and the sealing rubber ring is pressed against the waterproof insulation pad and the outer peripheral side of the stator disk.

[0016] Preferably, the heat dissipation frame is made of graphene.

[0017] Preferably, a sealing bearing for sealing and rotating the shaft is installed at one end of the heat dissipation frame away from the water pump housing, a connecting bearing for rotating the shaft is installed between the heat dissipation frame and the water pump housing, and the water inlet chamber and the negative pressure chamber are connected to each other through the connecting bearing.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. The present invention provides a water cooling mechanism. When the rotating shaft is driven, the impeller is driven to rotate, and the water circulates in the negative pressure chamber, the water inlet chamber, the water inlet hole, the heat dissipation channel and the water outlet pipe, and the heat generated by the rotation of the rotor disk and the stator disk is transferred to the water circulating in the heat dissipation channel through the waterproof insulating pad by heat conduction, thereby forming a circulating cooling effect; and the heat dissipation channel is winding and twisted, narrow in the middle and wide on both sides, which increases the complexity of the water flow path and flow state, improves the heat dissipation efficiency, and the winding and twisted channel fits the position of the coil group in the stator disk, concentrates on heat conduction, and further improves the heat dissipation effect of the stator disk.

[0020] 2. The present invention has a rubber convex integrally formed on the surface of the waterproof insulating pad, and the rubber convex is deformed and inserted into the arc groove on the water pump housing to improve the stability of the installation; and the rubber convex is located in the narrow area of ​​the heat dissipation channel. Since the pressure when water flows through the narrow area is slightly greater than that of the wider area, the waterproof ability is improved in a targeted manner; and compared with simply increasing the number of external mounting holes and internal mounting holes on the waterproof insulating pad, it avoids the structure of the waterproof insulating pad being damaged by multiple holes, and the life of the waterproof insulating pad is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall axonometric structure of a self-circulating water cooling structure of a disc motor for a water pump proposed by the present invention.

[0022] Figure 2 This is a schematic diagram of the back structure of a water pump housing of a disc-type motor self-circulating water cooling structure for a water pump proposed by the present invention.

[0023] Figure 3 The present invention provides a schematic diagram of the coordination of a waterproof insulating pad and a sealing rubber ring of a disc-type motor self-circulating water cooling structure for a water pump.

[0024] Figure 4 This is a schematic diagram of a rotating shaft of a self-circulating water cooling structure of a disc-type motor for a water pump and its connecting structure proposed by the present invention.

[0025] Figure 5 This is a schematic structural diagram of a rotor disk and a stator disk of a self-circulating water cooling structure of a disk-type motor for a water pump proposed by the present invention.

[0026] Figure 6This is a schematic diagram of the overall half-section structure of a self-circulating water cooling structure of a disc-type motor for a water pump proposed by the present invention.

[0027] In the figure: 1 motor housing, 2 water pump housing, 3 rotating shaft, 4 heat dissipation frame, 5 sealed bearing, 6 arc groove, 7 water outlet pipe, 8 rotating chamber, 9 water inlet chamber, 10 negative pressure chamber, 11 connecting bearing, 12 rubber convex, 13 rotor disk, 14 stator disk, 15 waterproof insulation pad, 16 sealing rubber ring, 17 impeller, 18 heat dissipation channel, 19 water inlet hole, 20 external mounting hole, 21 internal mounting hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-Figure 6 A self-circulating water cooling structure of a disc motor for a water pump comprises a motor housing 1, a water pump housing 2 is coaxially sealed and fixedly connected to the side of the motor housing 1, and further comprises:

[0030] The motor body is installed in the motor housing 1, and the output end is coaxially fixedly connected with the rotating shaft 3, and the rotating shaft 3 coaxially seals and penetrates the motor housing 1 and the water pump housing 2.

[0031] A rotating chamber 8 is defined in the water pump housing 2 , and the motor body is mounted in the rotating chamber 8 .

[0032] The motor body includes a rotor disk 13 and a stator disk 14. The rotor disk 13 is coaxially fixedly connected to a portion of the rotating shaft 3 located in the rotating chamber 8. The stator disk 14 is fixedly connected to the water pump housing 2, and a waterproof insulating pad 15 is sealed and fixedly connected to the water pump housing 2. The waterproof insulating pad 15 forms a heat dissipation channel 18 with the water pump housing 2 on one side away from the stator disk 14.

[0033] The water cooling mechanism includes an impeller 17, a water inlet chamber 9 is defined in the water pump housing 2, a heat dissipation frame 4 is fixedly connected to the side of the water pump housing 2 away from the motor housing 1, a negative pressure chamber 10 is defined in the heat dissipation frame 4, the water inlet chamber 9 and the negative pressure chamber 10 are interconnected and filled with water, the impeller 17 is coaxially fixedly connected to the part of the rotating shaft 3 located in the water inlet chamber 9, and the output direction of the impeller 17 is directed from the negative pressure chamber 10 to the water inlet chamber 9.

[0034] Reference Figure 2A heat dissipation channel 18 is provided on the side of the water pump housing 2 close to the motor housing 1. The heat dissipation channel 18 is in a winding and twisted shape, and the twisted structure is narrow in the middle and wide on both sides. The heat dissipation channel 18 is in sealing contact with the motor body. A water inlet hole 19 connecting the water inlet cavity 9 and the heat dissipation channel 18 is provided on the water pump housing 2. A water outlet pipe 7 is provided between the end of the heat dissipation channel 18 away from the water inlet hole 19 and the negative pressure cavity 10.

[0035] The heat dissipation channel 18 corresponds to the shape of the coil group in the stator disk 14 .

[0036] The water pump housing 2 is provided with a plurality of external mounting holes 20 and internal mounting holes 21. The plurality of external mounting holes 20 are spaced apart on the outer peripheral side of the heat dissipation channel 18, and the plurality of internal mounting holes 21 are spaced apart on the inner peripheral side of the heat dissipation channel 18. The stator disk 14 and the waterproof insulating pad 15 are sealed and fixedly connected to the water pump housing 2 through the plurality of external mounting holes 20 and the internal mounting holes 21.

[0037] A plurality of rubber protrusions 12 are integrally formed on the surface of the waterproof insulating pad 15, and the diameter of the end away from the waterproof insulating pad 15 is a structure that is wide at first and narrow at the end. A plurality of arc grooves 6 are provided on the water pump housing 2 located outside the heat dissipation channel 18, and the plurality of arc grooves 6 point to the interior thereof, and the diameter of the plurality of rubber protrusions 12 is a structure that is narrow at first and wide at the end, and the plurality of arc grooves 6 are squeezed and snap-fitted with the plurality of arc grooves 6 in a one-to-one correspondence.

[0038] The plurality of rubber protrusions 12 correspond to each other and are spaced apart and located in the narrower region of the twisted structure of the heat dissipation channel 18 .

[0039] A sealing rubber ring 16 is fixedly connected to the inner side of the motor housing 1, and the sealing rubber ring 16 is pressed against the waterproof insulating pad 15 and the outer peripheral side of the stator disk 14 to enhance the sealing performance and prevent water from flowing into the stator disk 14 through the gap to damage the device.

[0040] The heat dissipation frame 4 is made of graphene and has excellent heat dissipation capability. The circulating water entering the heat dissipation frame 4 can dissipate heat into the air here.

[0041] A sealing bearing 5 for sealing and rotating the shaft 3 is installed at one end of the heat dissipation frame 4 away from the water pump housing 2, and a connecting bearing 11 for rotating the shaft 3 is installed between the heat dissipation frame 4 and the water pump housing 2. The water inlet chamber 9 and the negative pressure chamber 10 are connected to each other through the connecting bearing 11.

[0042] In the present invention, when the motor body is powered on, the rotor disk 13 starts to rotate, driving the rotating shaft 3 to rotate, and the rotating shaft 3 drives the impeller 17 to rotate;

[0043] After the impeller 17 starts to rotate, a vortex is formed in the water inlet chamber 9, which generates suction force in the negative pressure chamber 10, so that the water in the negative pressure chamber 10 enters the water inlet chamber 9, and then enters the heat dissipation channel 18 through the water inlet hole 19, and finally returns to the negative pressure chamber 10 through the water outlet pipe 7. Under such a flow route, the water circulates. One side of the waterproof insulation pad 15 is in direct contact with the water in the heat dissipation channel 18, and the other side is in direct contact with the stator disk 14. The heat generated by the rotation of the rotor disk 13 and the stator disk 14 is transferred to the circulating water flow through heat conduction;

[0044] The design of the heat dissipation channel 18 being twisted and narrow in the middle and wide on both sides has the following advantages:

[0045] First, the winding and twisting design like a winding mountain road greatly prolongs the path of the water flow, allowing the water flow to fully contact the heat dissipation channel 18, thereby more effectively absorbing the heat generated by the stator disk 14 and improving the heat dissipation efficiency;

[0046] Second: The winding and twisted channel will make the flow state of the water more complicated, forming turbulence. The water flow in the turbulent state can better exchange heat. Compared with laminar flow, its heat dissipation effect is more significant. In addition, the structure of narrow in the middle and wide on both sides will cause local acceleration and disturbance of the water flow at the place where the width changes, further enhancing convective heat transfer and improving heat dissipation efficiency.

[0047] Third: the winding and twisted channel just fits the shape of the coil group, which is the source of heat generated by the stator disk 14 when it is working, fits the position of the coil group, concentrates heat conduction, and improves the heat dissipation effect of the stator disk 14;

[0048] The contact surface between the stator plate 14 and the water pump housing 2 is fixed through the outer mounting hole 20 and the inner mounting hole 21 next to the heat dissipation channel 18. The positions of the outer mounting hole 20 and the inner mounting hole 21 just fix the area where water flows in the heat dissipation channel 18, thereby reducing the risk of water leakage.

[0049] A rubber bulge 12 is integrally formed on the surface of the waterproof insulating pad 15. The rubber bulge 12 is wide at first and narrow at the end. When installed, it just matches the arc groove 6 on the outer side of the heat dissipation channel 18 which is narrow at first and wide at the end. The rubber bulge 12 is deformed to be stuck in the arc groove 6, which not only improves the stability of the installation; but also the position of the rubber bulge 12 is just located in the narrower area of ​​the heat dissipation channel 18. The pressure of water flowing through the narrower area will be slightly greater than that of the wider area, which improves the waterproof ability in a targeted manner; and compared with simply increasing the number of external mounting holes 20 and internal mounting holes 21 on the waterproof insulating pad 15, it avoids porous damage to the structure of the waterproof insulating pad 15 and improves the life of the waterproof insulating pad 15.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-circulating water cooling structure for a disc motor for a water pump, comprising a motor housing (1), wherein the side of the motor housing (1) is coaxially sealed and fixedly connected to a water pump housing (2), characterized in that: Also includes: A motor body, the motor body being mounted in a motor housing (1), and the output end being coaxially fixedly connected to a rotating shaft (3), the rotating shaft (3) coaxially and sealedly penetrating the motor housing (1) and the water pump housing (2); A water cooling mechanism, the water cooling mechanism comprising an impeller (17), a water inlet chamber (9) is provided in the water pump housing (2), a heat dissipation frame (4) is fixedly connected to the side of the water pump housing (2) away from the motor housing (1), a negative pressure chamber (10) is provided in the heat dissipation frame (4), the water inlet chamber (9) and the negative pressure chamber (10) are interconnected and filled with water, the impeller (17) is coaxially fixedly connected to a part of the rotating shaft (3) located in the water inlet chamber (9), and the output direction of the impeller (17) is controlled by the negative pressure chamber (10). ) points to the water inlet chamber (9), a heat dissipation channel (18) is provided on the side of the water pump housing (2) close to the motor housing (1), the heat dissipation channel (18) is in a winding and twisted shape, and the twisted structure is narrow in the middle and wide on both sides, the heat dissipation channel (18) is in sealing contact with the motor body, a water inlet hole (19) is provided on the water pump housing (2) to connect the water inlet chamber (9) and the heat dissipation channel (18), and a water outlet pipe (7) is provided between the end of the heat dissipation channel (18) away from the water inlet hole (19) and the negative pressure chamber (10).

2. A self-circulating water cooling structure for a disc motor for a water pump according to claim 1, characterized in that: A rotating chamber (8) is provided in the water pump housing (2), and the motor body is installed in the rotating chamber (8).

3. A self-circulating water cooling structure for a disc motor for a water pump according to claim 2, characterized in that: The motor body comprises a rotor disk (13) and a stator disk (14); the rotor disk (13) is coaxially fixedly connected to a portion of a rotating shaft (3) located in a rotating chamber (8); the stator disk (14) is fixedly connected to a water pump housing (2), and a waterproof insulating pad (15) is sealed and fixedly connected to the water pump housing (2); a side of the waterproof insulating pad (15) away from the stator disk (14) and the water pump housing (2) form a heat dissipation channel (18).

4. A self-circulating water cooling structure for a disc motor for a water pump according to claim 3, characterized in that: The heat dissipation channel (18) corresponds to the shape of the coil group in the stator disk (14).

5. The self-circulating water cooling structure of a disc motor for a water pump according to claim 3, characterized in that: The water pump housing (2) is provided with a plurality of external mounting holes (20) and internal mounting holes (21); the plurality of external mounting holes (20) are spaced apart on the outer peripheral side of the heat dissipation channel (18); the plurality of internal mounting holes (21) are spaced apart on the inner peripheral side of the heat dissipation channel (18); the stator plate (14) and the waterproof insulating pad (15) are sealed and fixedly connected to the water pump housing (2) via the plurality of external mounting holes (20) and the internal mounting holes (21).

6. A self-circulating water cooling structure for a disc motor for a water pump according to claim 3, characterized in that: The surface of the waterproof insulation pad (15) is integrally formed with a plurality of rubber protrusions (12); the diameter of the end away from the waterproof insulation pad (15) is in a structure that is first wide and then narrow; a plurality of arc grooves (6) are provided on the water pump housing (2) located outside the heat dissipation channel (18); the diameter of the plurality of arc grooves (6) pointing to the inside thereof is in a structure that is first narrow and then wide; and the plurality of rubber protrusions (12) are in one-to-one correspondence with the plurality of arc grooves (6) through extrusion and clamping engagement.

7. A self-circulating water cooling structure for a disc motor for a water pump according to claim 6, characterized in that: The plurality of rubber convex protrusions (12) correspond to each other one by one and are spaced apart and located in a narrower region of the twisted structure of the heat dissipation channel (18).

8. The self-circulating water cooling structure of a disc motor for a water pump according to claim 3, characterized in that: A sealing rubber ring (16) is fixedly connected to the inner side of the motor housing (1), and the sealing rubber ring (16) is pressed against the waterproof insulation pad (15) and the outer peripheral side of the stator disc (14).

9. A self-circulating water cooling structure for a disc motor for a water pump according to claim 1, characterized in that: The material of the heat dissipation frame (4) is graphene.

10. A self-circulating water cooling structure for a disc motor for a water pump according to claim 1, characterized in that: A sealing bearing (5) for sealing and rotating the rotating shaft (3) is installed at one end of the heat dissipation frame (4) away from the water pump housing (2), a connecting bearing (11) for rotating the rotating shaft (3) is installed between the heat dissipation frame (4) and the water pump housing (2), and the water inlet chamber (9) and the negative pressure chamber (10) are connected to each other via the connecting bearing (11).

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