Cooling structure based on disc-type double motors

Abstract

The utility model discloses a cooling structure based on disc-type double motors, comprising four cooling water paths which are respectively arranged on a first end cover, a second end cover, a third end cover and a fourth end cover of a disc-type motor; wherein four groups of water inlets and water outlets of the four cooling water paths are positioned on the same side edge of the disc-type dual-motor shell; one end of each water collector connecting piece is connected with a group of water inlets / outlets in the shell of the disc-type double motor, and the other end of each water collector connecting piece is connected with a group of water inlet / outlet through holes in the water collector; the water collector internally comprises a water inlet collecting channel and a water outlet collecting channel; four water inlet through holes and four water outlet through holes are formed in one side, opposite to the disc type double-motor shell, of the water collector; a main water inlet is formed in one side edge, corresponding to the water inlet and collecting channel, of the water collector; a main water outlet is formed in one side edge, corresponding to the water outlet and collecting channel, of the water collector.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for disc motors, and specifically to a cooling structure based on a disc dual motor. Background Technology

[0002] A disc motor is a type of motor with a planar air gap and an axial magnetic field. Compared to traditional radial magnetic field motors, disc motors are also called axial magnetic field motors. Disc motors have a wide range of applications due to their compact structure, short axial dimension, ability to increase power through axial cascading, ease of fabrication into coreless armature structures to eliminate cogging torque and stator iron losses, low noise, and high efficiency.

[0003] Due to their structural characteristics, disc-type dual motors have gained favor in the marine industry. The flat design and flexible arrangement of disc motors, however, hinder their development into high-power applications due to their cooling performance. Currently, cooling for these products primarily relies on series water channels, with water entering from one end cap and then the other. However, this results in a relatively low overall heat dissipation coefficient, making them unsuitable for high-power output disc motors. Existing high-power disc-type dual motors are extremely rare in use, mainly due to their complex structural design, difficult manufacturing process, and excessively long cooling water channels, which cannot meet the motor's rapid heat exchange requirements. Especially for dual motors, doubling the water channel length compared to a single motor does not necessarily lead to a doubling of the overall power, significantly reducing performance. Utility Model Content

[0004] In view of this, the present invention provides a cooling structure based on a disc-type dual motor to solve the problem that the cooling effect of the disc-type dual motor in the prior art is not ideal and cannot achieve greater power output.

[0005] This utility model embodiment provides a cooling structure based on a disc-type dual motor, including:

[0006] The four cooling water channels are respectively installed on the first, second, third, and fourth end covers of the disc motor; the four sets of water inlets and outlets of the four cooling water channels are located on the same side of the disc dual motor housing.

[0007] Four water collector connectors, one end of each water collector connector is connected to a set of inlet / outlet ports on the housing of the disc-type dual motor, and the other end of each water collector connector is connected to a set of inlet / outlet through holes on the water collector;

[0008] The water collector includes an inlet water collection channel and an outlet water collection channel. Four inlet holes and four outlet holes are provided on the side of the water collector opposite to the disc-type dual motor housing. A main water inlet is provided on one side of the water collector corresponding to the inlet water collection channel. A main water outlet is provided on one side of the water collector corresponding to the outlet water collection channel.

[0009] Optionally, the diameter of the four sets of inlets and outlets of the four cooling water circuits is N, the diameter of the inlet and outlet holes on the water collector is N, the diameter of the total inlet of the water collector is at least 2N, and the diameter of the total outlet of the water collector is at least 2N.

[0010] Optionally, it also includes: a first sealing gasket disposed between one end of the water collector connector and a set of inlet / outlet ports at the housing of the disc-type dual motor.

[0011] Optionally, it also includes: a second sealing gasket, disposed between the water collector connector and the water inlet and outlet holes of the water collector.

[0012] Optionally, the inlet and outlet holes on the outer shell of the water collector are convex stop structures; the side of the water collector connector that connects to the water collector is a convex stop structure; the water collector and the water collector connector are sealed by a second sealing gasket.

[0013] Optionally, it also includes: an air vent valve, which is located on one side of the water collection channel corresponding to the water outlet of the water collector.

[0014] Optionally, a first cooling water channel is cast inside the first end cover, and a second cooling water channel is provided on the first water channel cover plate; the first water channel cover plate and the first end cover are fixedly connected by friction welding.

[0015] Optionally, it also includes: four arc-shaped protrusions evenly distributed in the middle region of the first end cap; and four arc-shaped recesses evenly distributed in the middle region of the first water channel cover, corresponding one-to-one with the four arc-shaped protrusions.

[0016] Optionally, the openings of the inlet water collection channel and the outlet water collection channel are located on opposite sides of the water collector; the openings of the inlet water collection channel and the outlet water collection channel are sealed by two sealing plugs.

[0017] Optionally, the two ends of the water collector connector are fixedly connected to the housing of the disc-type dual motor and the water collector respectively by several bolts.

[0018] The beneficial effects of this utility model are:

[0019] This utility model embodiment provides a cooling structure based on a disc-type dual motor. It employs a parallel water circuit design for the disc-type dual motors. By distributing water from a high-flow-rate collector to the four end caps, it forms an externally circulating parallel water circuit, effectively achieving heat dissipation and meeting the cooling requirements of large-size, high-power disc-type dual motors. This broadens its application scenarios. The dual-motor water collector cooling structure design ensures both the motor's performance under high-power conditions and a lightweight motor structure, significantly improving the overall performance of the motor and making it more competitive in various application areas of disc-type dual motors. Attached Figure Description

[0020] The features and advantages of this utility model will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as limiting the utility model in any way. In the drawings:

[0021] Figure 1 A structural diagram of a cooling structure based on a disc-type dual motor is shown in an embodiment of this utility model;

[0022] Figure 2 This diagram shows the water channel structure inside the end cap of a disc-type dual motor according to an embodiment of the present invention.

[0023] Figure 3 This diagram shows a water channel cover structure of a disc-type dual-motor according to an embodiment of the present invention;

[0024] Figure 4 This diagram shows the structure of a disc-type dual motor with its end cap and water passage cover plate welded together according to an embodiment of the present invention.

[0025] Figure 5 This illustration shows a cross-sectional view of the cooling water channel of one end cover of a disc-type dual motor according to an embodiment of the present invention.

[0026] Figure 6 A cross-sectional view of a water collector based on a disc-type dual motor is shown in an embodiment of the present invention;

[0027] Figure 7 The diagram shows the connection relationship of the water collector in a cooling structure based on a disc-type dual motor according to an embodiment of the present invention.

[0028] Figure 8 This image shows one of the exploded views of a water collector and a water collector connector according to an embodiment of the present invention;

[0029] Figure 9 This is a second exploded view of a water collector and a water collector connector according to an embodiment of the present invention;

[0030] Figure 10A cross-sectional view of a water collector and a water collector connector according to an embodiment of the present invention is shown. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] This utility model embodiment provides a cooling structure based on a disc-type dual motor, including: four cooling water channels, four water collector connectors, and a water collector. The four cooling water channels are respectively installed on the first, second, third, and fourth end covers of the disc-type motor; the four sets of inlets and outlets of the four cooling water channels are located on the same side of the disc-type dual motor housing. Each of the four water collector connectors has one end connected to a set of inlet / outlet ports on the disc-type dual motor housing, and the other end connected to a set of inlet / outlet through holes on the water collector. The water collector includes an inlet water collection channel and an outlet water collection channel; four inlet through holes and four outlet through holes are provided on the side of the water collector opposite to the disc-type dual motor housing; a main water inlet is provided on one side of the water collector corresponding to the inlet water collection channel; and a main water outlet is provided on one side of the water collector corresponding to the outlet water collection channel.

[0033] like Figure 1 As shown, based on the water-cooled structure of the end cover of the disc motor, two disc motors are stacked. Each disc motor has a cooling water channel structure on both end covers, totaling four cooling water channels. These channels are connected to the inlet / outlet of the four cooling water channels through a water collector 100, thus realizing the overall water channel is divided into four, which compensates for the excessively long series connection of the end cover water channels and the small inlet and outlet flow of a single end cover water channel.

[0034] like Figure 1 As shown, the two disc motors include four end covers 210 / 220 / 230 / 240, sharing a single motor shaft 300. Taking end cover 230 as an example... Figure 2 As shown, the end cap inlet water channel 231 and the first cooling water channel 232 are cast using a casting process. Figure 3 As shown, the water channel cover plate is cast with corresponding water inlet channel 234 and second cooling water channel 235. Figure 4As shown, the water passage and water passage cover plate of the end cap are combined into one by friction welding technology. Due to the large outer diameter of its high-power disc-type dual motor, the water pressure in the center of the interior is higher than that in other places when the joint is welded separately. Therefore, four concave and convex structures are exposed in the middle of the water passage and water passage cover plate of the end cap. Figure 5 As shown, the first cooling water channel 232 on the end cover and the second cooling water channel 235 on the water channel cover plate form an interlaced structure, which improves the heat dissipation effect by increasing the contact area with the cooling water. The arc protrusions 233 and arc recesses 236 on the cover plate are correspondingly provided. If the four concave and convex structures were combined into one, the deformation of the end plate would increase, making welding more difficult when using friction welding technology. Therefore, in this embodiment, a four-segment arc concave and convex structure is used.

[0035] As an optional implementation, the diameter of the four sets of inlets and outlets of the four cooling water circuits is N, the diameter of the inlet and outlet holes on the water collector is N, the diameter of the total inlet of the water collector is at least 2N, and the diameter of the total outlet of the water collector is at least 2N.

[0036] In this embodiment, the diameters of the cooling water inlet and outlet are set to 13mm, and the diameters of the total inlet and outlet of the water collector are set to 26mm. Experiments have shown that the diameter settings of this set of inlet / outlet and total inlet / outlet can meet the heat dissipation requirements of the disc-type dual motor and achieve the heat dissipation effect of four cooling water circuits with independent inlet and outlet connections.

[0037] The welded water circuit section and stator / rotor assembly are assembled together. The water inlets / outlets of the four end caps are all on the same plane. The water collector connector extends outward at both ends, with several through holes in the extended portion. The end caps / water collector have several threaded holes at corresponding positions. The water collector connector is fixedly connected to the disc-type dual motor housing and the water collector by several bolts at both ends. A first sealing gasket is provided between one end of the water collector connector and a set of inlets / outlets on the disc-type dual motor housing.

[0038] like Figure 6 and Figure 7 As shown, the water collector includes a main inlet 101 and a main outlet 102. The interior of the water collector is divided into an inlet water collection channel 103 and an outlet water collection channel 104. Four inlet holes 105 and four outlet holes 106 are provided in the inlet and outlet water collection channels at positions corresponding to the inlet / outlet of the disc motor housing. An air vent valve 107 is provided on one side of the outlet water collection channel. The water collector is manufactured using a mold with one end closed and the other open, and both open ports are sealed with sealing plugs 108.

[0039] like Figure 8 and Figure 9As shown, a second sealing gasket 500 is provided between the water inlet and outlet holes of the water collector 100 and the water collector connector 400. The water inlet and outlet holes on the outer shell of the water collector are convex stop structures 109; the side of the water collector connector that connects to the water collector is a convex stop structure 401; the water collector and the water collector connector form a stop seal through the second sealing gasket.

[0040] In a specific implementation, the inlet and outlet positions of end caps 220 and 230 are close to each other, and the corresponding water collector connectors are 4-hole structures, while the water collector connectors at both ends are 2-hole structures.

[0041] In a specific embodiment, the cooling water channel in the middle of the disc-type dual motor is designed separately, abandoning the existing end cover water channel. Since it is necessary to dissipate heat for both disc-type motors at the same time, the water channel of the middle cooling water channel structure is widened, and the diameter of the inlet and outlet is also slightly larger than the diameter of the inlet and outlet at both ends.

[0042] The second sealing gasket is made of polyethylene. The convex stop of the inlet and outlet of the water collector connector is not in complete contact with the convex stop of the inlet and outlet of the water collector. The height difference of several water collector connectors is adjusted by the second sealing gasket.

[0043] This utility model embodiment provides a cooling structure based on a disc-type dual motor. It employs a parallel water circuit design for the disc-type dual motors. By distributing water from a high-flow-rate collector to the four end caps, it forms an externally circulating parallel water circuit, effectively achieving heat dissipation and meeting the cooling requirements of large-size, high-power disc-type dual motors. This broadens its application scenarios. The dual-motor water collector cooling structure design ensures both the motor's performance under high-power conditions and a lightweight motor structure, significantly improving the overall performance of the motor and making it more competitive in various application areas of disc-type dual motors.

[0044] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cooling structure based on a disc-type dual-motor system, characterized in that, include: Four cooling water channels are respectively installed on the first end cover, second end cover, third end cover and fourth end cover of the disc motor; wherein, the four sets of water inlets and outlets of the four cooling water channels are located on the same side of the disc dual motor housing; Four water collector connectors, one end of each water collector connector is connected to a set of inlet / outlet ports on the housing of the disc-type dual motor, and the other end of each water collector connector is connected to a set of inlet / outlet through holes on the water collector; The water collector includes an inlet water collection channel and an outlet water collection channel inside; four inlet holes and four outlet holes are provided on the side of the water collector opposite to the disc-type dual motor housing; a main water inlet is provided on one side of the water collector corresponding to the inlet water collection channel; and a main water outlet is provided on one side of the water collector corresponding to the outlet water collection channel.

2. The cooling structure based on a disc-type dual motor according to claim 1, characterized in that, The diameter of the four sets of inlets and outlets of the four cooling water circuits is N. The diameter of the inlet and outlet holes on the water collector is N. The diameter of the total inlet of the water collector is at least 2N. The diameter of the total outlet of the water collector is at least 2N.

3. The cooling structure based on a disc-type dual motor according to claim 1, characterized in that, Also includes: The first sealing gasket is disposed between one end of the water collector connector and a set of inlet / outlet ports on the housing of the disc-type dual motor.

4. The cooling structure based on a disc-type dual motor according to claim 1, characterized in that, Also includes: The second sealing gasket is disposed between the water collector connector and the water inlet and outlet holes of the water collector.

5. The cooling structure based on a disc-type dual motor according to claim 4, characterized in that, The inlet and outlet holes on the outer shell of the water collector are convex stop structures; the side of the water collector connector that connects to the water collector is a convex stop structure; the water collector and the water collector connector are sealed by the second sealing gasket.

6. The cooling structure based on a disc-type dual motor according to claim 5, characterized in that, Also includes: An air vent valve is located on one side of the water collector corresponding to the water outlet collection channel.

7. The cooling structure based on a disc-type dual motor according to claim 1, characterized in that, A first cooling water channel is cast inside the first end cap, and a second cooling water channel is provided on the first water channel cover plate; the first water channel cover plate and the first end cap are fixedly connected by friction welding.

8. The cooling structure based on a disc-type dual motor according to claim 7, characterized in that, Also includes: Four arc-shaped protrusions are evenly distributed in the middle area of ​​the first end cap; four arc-shaped concave sections are evenly distributed in the middle area of ​​the first water channel cover plate, and correspond one-to-one with the four arc-shaped protrusions.

9. The cooling structure based on a disc-type dual motor according to claim 1, characterized in that, The openings of the inlet water collection channel and the outlet water collection channel are located on opposite sides of the water collector; the openings of the inlet water collection channel and the outlet water collection channel are sealed by two sealing plugs.

10. The cooling structure based on a disc-type dual motor according to claim 1, characterized in that, The two ends of the water collector connector are fixedly connected to the housing of the disc-type dual motor and the water collector respectively by several bolts.

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