Electric spindle, bearing and stator double-heat-source liquid cooling assembly

Abstract

The invention provides a motorized spindle and a bearing and stator double-heat-source liquid cooling assembly, and particularly relates to the technical field of machine tool motorized spindles, the motorized spindle comprises a motorized spindle body, the motorized spindle body comprises a center spindle, a front end cover, a rear end cover, a working end, a stator, a front end bearing set and a rear end bearing set, the electric spindle, bearing and stator double-heat-source liquid cooling assembly further comprises a bearing side liquid cooling mechanism used for conducting heat dissipation on the bearing, a stator side liquid cooling mechanism used for conducting heat dissipation on the stator, and a flow adjusting mechanism used for dynamically adjusting the cooling flow. Through targeted arrangement of the first liquid cooling assembly and the second liquid cooling assembly on the bearing side and the spiral liquid cooling pipe on the stator side, targeted heat dissipation of friction heat of the front-end bearing pack and the rear-end bearing pack and stator electromagnetic heat is achieved, the problem of uneven heat dissipation caused by a traditional single cooling mode is avoided, bearing lubrication failure and stator coil aging are effectively delayed, and the service life of the motor is prolonged. The service life of the motorized spindle core component is prolonged.

Description

TECHNICAL FIELD

[0001] The application provides an electric spindle and bearing, stator double heat source liquid cooling assembly, and particularly relates to the technical field of machine tool electric spindles. BACKGROUND

[0002] The electric spindle is an industrial production and processing component integrating the machine tool spindle and the driving motor, which is widely used in industrial production and is equipped with in many machine tools. When the electric spindle runs at high speed, the bearing and the stator as the main heat sources generate a large amount of heat.

[0003] However, the existing liquid cooling system of the electric spindle (for example, the integrated water cooling device disclosed in the announcement No. CN216751440U sets a cooling water channel through the spindle shell and realizes the overall water cooling of the electric spindle by adopting a single circulation loop, which relies on the "shell surrounding type heat dissipation" and does not set a targeted and differentiated structure according to the differences in the heating characteristics of the bearing and the stator) often adopts a fixed flow channel setting, and the cooling liquid is not evenly distributed, which leads to local overheating, thermal deformation, precision reduction and service life shortening. For example, the traditional liquid cooling assembly lacks flexible cooling distribution function and cannot dynamically adjust the cooling according to the thermal load; the insufficient cooling of the bearing group leads to the aging of the grease; and the uneven cooling of the stator causes the decline of the electromagnetic performance.

[0004] Therefore, the application provides an electric spindle and bearing, stator double heat source liquid cooling assembly to improve the shortcomings of the prior art. SUMMARY

[0005] In view of the defects of the prior art, the application provides an electric spindle and bearing, stator double heat source liquid cooling assembly, which can effectively solve the technical problem that the heat generated by the bearing and the stator double heat sources of the electric spindle cannot be efficiently and uniformly cooled, and lacks real-time adjustment function, leading to thermal deformation, increased vibration, reduced precision and shortened service life.

[0006] To achieve the above purpose, the application is implemented by the following technical scheme: The application discloses an electric spindle, which comprises an electric spindle main body, the electric spindle main body comprises a center spindle, a front end cover, a rear end cover, a working end, a stator, a front end bearing group and a rear end bearing group; It also comprises a bearing side liquid cooling mechanism for cooling the bearing and a stator side liquid cooling mechanism for cooling the stator, and a flow adjusting mechanism for dynamically adjusting the cooling flow; The bearing side liquid cooling mechanism comprises a first liquid cooling assembly matched with the front end bearing group and a second liquid cooling assembly matched with the rear end bearing group; The stator side liquid cooling mechanism is matched with the stator; The flow regulating mechanism comprises an electromagnetic shunt valve, which is in communication with the pipelines of the bearing-side liquid cooling mechanism and the stator-side liquid cooling mechanism respectively, and is used for differentiating the distribution of cooling flow according to the temperature difference of heat sources.

[0007] Preferably, the first liquid cooling assembly comprises a first liquid cooling jacket, a first annular flow channel is formed in the first liquid cooling jacket, the first liquid cooling jacket is in communication with the electromagnetic shunt valve through a first water guide pipe, the electromagnetic shunt valve is in communication with an external cooling source, and the first liquid cooling jacket has a first heat-conducting ring surface which is attached to the outer peripheral surface of the front bearing set; The second liquid cooling assembly comprises a second liquid cooling jacket, a second annular flow channel is formed in the second liquid cooling jacket, the second liquid cooling jacket is in communication with an external cooling source through a second water guide pipe, and the second liquid cooling jacket has a second heat-conducting ring surface which is attached to the outer peripheral surface of the rear bearing set; The stator-side liquid cooling mechanism comprises a stator liquid cooling jacket, a spiral liquid cooling pipe is fitted in a spiral embedding groove formed in the stator liquid cooling jacket, and the spiral liquid cooling pipe is in communication with the electromagnetic shunt valve through a third water guide pipe; A temperature sensor is further arranged on the first liquid cooling assembly, the second liquid cooling assembly and the stator-side liquid cooling mechanism respectively, and is electrically connected to the electromagnetic shunt valve, so as to send the detected temperature signal to the electromagnetic shunt valve to regulate the supply flow and flow rate of each pipeline.

[0008] Preferably, the first liquid cooling jacket is assembled with the front bearing set in interference, the second liquid cooling jacket is assembled with the rear bearing set in interference, and the stator liquid cooling jacket is assembled with the stator in interference.

[0009] Preferably, a heat-conducting turbulence assembly is arranged on each of the first liquid cooling assembly and the second liquid cooling assembly. The heat-conducting turbulence assembly comprises a plurality of equidistantly distributed annular micro-tubs on the first heat-conducting ring surface and the second heat-conducting ring surface, a heat-conducting region is formed between adjacent two annular micro-tubs, the heat-conducting region is filled with heat-conducting silicone grease, and a plurality of turbulence columns are arranged on the inner peripheral surfaces of the first annular flow channel and the second annular flow channel in staggered distribution.

[0010] Preferably, the front bearing set is composed of at least two bearings arranged in parallel, and the rear bearing set is composed of at least four bearings arranged in parallel.

[0011] Preferably, the stator-side liquid cooling mechanism further comprises a sealing plate which is fitted to the outer peripheral surface of the stator liquid cooling jacket.

[0012] Preferably, the height of the annular micro-tubs is 0.1-0.2 mm, the diameter of the turbulence columns is 1 mm, and the turbulence columns are arranged in staggered distribution.

[0013] Preferably, the spiral liquid cooling pipe is a copper pipe, and the pipe diameter of the spiral liquid cooling pipe is matched with the slot width of the spiral embedding slot.

[0014] Preferably, the sealing plate is detachably connected with the stator liquid cooling jacket through bolts.

[0015] Preferably, the first water guide pipe, the second water guide pipe and the third water guide pipe are all made of stainless steel pipes, and the outer walls of the pipes are provided with heat insulation layers.

[0016] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects: The electric spindle and bearing, stator double heat source liquid cooling assembly realize targeted heat dissipation of the front bearing set, the rear bearing set friction heat and the stator electromagnetic heat through the targeted arrangement of the bearing side first liquid cooling assembly, the second liquid cooling assembly and the stator side spiral liquid cooling pipe, avoid the uneven heat dissipation problem caused by the traditional single cooling mode, effectively delay the bearing lubrication failure and the stator coil aging, and prolong the service life of the electric spindle core component; Through the linkage control of the magnetic flow divider valve and the temperature sensor, the cooling flow of the first water guide pipe, the second water guide pipe and the third water guide pipe can be adjusted in real time according to the heat source temperature fluctuation caused by the load and speed change of the electric spindle, so that the heat can be quickly taken away under extreme conditions such as heavy load and high speed, the electric spindle operating temperature is maintained stable, and the machining precision is ensured; Through the interference assembly of the first liquid cooling jacket, the second liquid cooling jacket and the stator liquid cooling jacket, combined with the annular micro boss and the heat-conducting silicone grease, the thermal resistance between the heat source and the liquid cooling jacket is greatly reduced, and the heat conduction efficiency is improved; the setting of the spiral liquid cooling pipe and the turbulence column in the first annular flow channel and the second annular flow channel strengthens the turbulence effect of the cooling liquid and improves the heat exchange rate, further enhancing the overall heat dissipation and cooling capacity; The adaptive corresponding arrangement of the liquid cooling assembly and the electric spindle body reduces the radial space occupation while ensuring the heat dissipation effect, adapts to the narrow installation environment, the detachable connection of the sealing plate and the standardized liquid cooling assembly structure reduce the assembly difficulty, facilitate the later maintenance and component replacement, and reduce the use cost; The heat-conducting turbulence assembly does not need additional power driving, relies on the flow of the cooling liquid itself to realize turbulence strengthening, simplifies the structure while reducing energy consumption, combines multiple branch independent cooling and dynamic flow adjustment, avoids waste of cooling resources, and improves the stability and reliability of long-term operation of the electric spindle. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front perspective structure diagram of the present application; Figure 2 is a perspective structure diagram of the present application from another angle; Figure 3This is a partial three-dimensional structural diagram of relevant components inside the main body of the electric spindle in this invention; Figure 4 This is a partial three-dimensional structural diagram of relevant components in the first and second liquid cooling components of the present invention; Figure 5 This is a partial three-dimensional structural diagram of the relevant components of the first liquid cooling assembly, the second liquid cooling assembly, and the electric spindle body in the present invention when they are separated. Figure 6 This is a partial three-dimensional structural diagram of the relevant components at the first liquid cooling jacket and the second liquid cooling jacket in this invention; Figure 7 This is a partial structural diagram of the relevant components at the first liquid cooling jacket and the second liquid cooling jacket in this invention; Figure 8 This is a partial three-dimensional structural diagram of the relevant components at the stator liquid cooling jacket in this invention.

[0018] The labels in the diagram represent: 1. Electric spindle body; 101. Central spindle; 11. Front end cover; 12. Rear end cover; 13. Working end; 14. Stator; 15. Front end bearing assembly; 16. Rear end bearing assembly; 2. Bearing-side liquid cooling mechanism; 21. First liquid cooling assembly; 2101. First liquid cooling jacket; 2102. First water guide pipe; 2103. First annular flow channel; 2104. First heat-conducting annular surface; Thermal conduction and turbulence-disrupting components: 2105, annular micro-protrusion; 2106, thermal conduction area; 2107, turbulence-disrupting protrusion; 22. Second liquid cooling assembly; 2201. Second liquid cooling jacket; 2202. Second water guide pipe; 2203. Second annular flow channel; 2204. Second heat-conducting annular surface; 3. Stator side liquid cooling mechanism; 31. Stator liquid cooling jacket; 32. Third heat-conducting annular surface; 33. Spiral groove; 34. Spiral liquid cooling pipe; 35. Third water guide pipe; 36. Sealing plate. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments.

[0020] Example 1:

[0021] like Figures 1 to 3 As shown, an electric spindle includes an electric spindle body 1, which includes a central spindle 101, a front end cover 11, a rear end cover 12, a working end 13, a stator 14, a front end bearing assembly 15, and a rear end bearing assembly 16. The front end bearing set 15 is composed of two parallel arranged deep groove ball bearings, and the rear end bearing set 16 is composed of four parallel arranged angular contact ball bearings; different numbers of bearings are configured, considering that the rear end bearing set needs to bear greater axial load and radial load, more number of bearings can disperse the stress, improve the stability and service life of the main shaft operation, and the front and rear bearing sets are sleeved on the center main shaft 101 and are positioned and fixed by the front end cover 11 and the rear end cover 12.

[0022] The motorized spindle also includes a bearing side liquid cooling mechanism 2 for cooling the bearings, a stator side liquid cooling mechanism 3 for cooling the stator, and a flow regulating mechanism for dynamically adjusting the cooling flow; The bearing side liquid cooling mechanism 2 includes a first liquid cooling assembly 21 matched with the front end bearing set 15 and a second liquid cooling assembly 22 matched with the rear end bearing set 16, both of which are sleeved on the outer periphery of the front end bearing set 15 and the rear end bearing set 16, and can accurately cool the front and rear bearing sets, avoiding lubrication failure or precision decline caused by local overheating of the bearings.

[0023] The stator side liquid cooling mechanism 3 is sleeved on the outer periphery of the stator 14 and coaxially arranged with the stator 14, ensuring uniform circumferential cooling of the stator and preventing coil aging acceleration caused by uneven electromagnetic heat distribution.

[0024] The flow regulating mechanism includes an electromagnetic shunt valve, which is fixed to the side of the motorized spindle body 1, the inlet of which is communicated with the external cooling liquid tank, and the outlet is communicated with the water inlet pipeline of the bearing side liquid cooling mechanism 2 and the stator side liquid cooling mechanism 3 through the pipeline, the electromagnetic shunt valve can receive the signal transmitted by the temperature sensor, dynamically allocate the cooling flow according to the real-time temperature difference of the bearings and the stator, realize "on-demand cooling", and avoid waste of cooling resources.

[0025] It is worth noting that in the above embodiment scheme: the temperature sensor selects an industrial grade PT100 platinum resistance sensor, which can accurately detect the temperature of the liquid cooling jacket to cover the working temperature range of the motorized spindle heat source, and is fixed by screwing close to the liquid cooling jacket to ensure real-time detection; the electromagnetic shunt valve adopts a three-way / four-way industrial standard valve, the diameter is matched with the cooling pipeline, the response time is fast, and the sensor signal can be directly received and the flow is adjusted.

[0026] Example two:

[0027] As Figures 4 to 8As shown, the above bearing and stator double heat source liquid cooling assembly, the first liquid cooling assembly 21 includes a first liquid cooling jacket 2101, the first liquid cooling jacket 2101 is annular structure, the inner wall is provided with a first annular flow channel 2103, the inlet and outlet of the first annular flow channel 2103 are communicated with the first water guide pipe 2102, one end of the first water guide pipe 2102 is communicated with the outlet of the electromagnetic flow valve, the other end is communicated with the return pipe of the external cooling source, forming a complete cooling circulation loop, ensuring that the cooling liquid can continuously take away the heat generated by the bearing; The inner wall of the first liquid cooling jacket 2101 is a first heat-conducting ring surface 2104 which is in contact with the outer circumferential surface of the front bearing set 15, and the first liquid cooling jacket 2101 is assembled with the front bearing set 15 by interference fit. The interference fit can eliminate the gap between the two, reduce the thermal resistance, and improve the efficiency of heat transfer from the bearing to the liquid cooling jacket.

[0028] The structure of the second liquid cooling assembly 22 is consistent with that of the first liquid cooling assembly 21. The second liquid cooling jacket 2201 is interference fitted with the rear bearing set 16. The second water guide pipe 2202 is communicated with the electromagnetic flow valve and the external cooling source respectively, ensuring that the rear bearing set can obtain the same high-efficiency heat dissipation effect as the front bearing set, while simplifying the structure setting and reducing the processing and assembly difficulty.

[0029] The stator side liquid cooling mechanism 3 includes a stator liquid cooling jacket 31, the outer circumferential surface of the stator liquid cooling jacket 31 is provided with a spiral embedding groove 33, and the spiral embedding groove 33 is tightly embedded with a spiral liquid cooling pipe 34. The spiral embedding groove can position and fix the spiral liquid cooling pipe, prevent the liquid cooling pipe from shifting or falling off due to vibration during high-speed operation, and improve the adhesion of the liquid cooling pipe and the liquid cooling jacket, and strengthen heat transfer; The two ends of the spiral liquid cooling pipe 34 are respectively communicated with the third water guide pipe 35, and the third water guide pipe 35 is communicated with the outlet of the electromagnetic flow valve. The outer walls of the first liquid cooling jacket 2101, the second liquid cooling jacket 2201 and the stator liquid cooling jacket 31 are fixed with temperature sensors. The temperature sensors are close to the liquid cooling jacket and can accurately detect the temperature of the liquid cooling jacket, thereby indirectly reflecting the actual temperature of the corresponding heat source, ensuring the accuracy of the detection data. The temperature sensors are electrically connected with the control end of the electromagnetic flow valve through wires, and real-time temperature signals are sent to the electromagnetic flow valve. The electromagnetic flow valve judges the heating condition of each heat source according to the received temperature signal, automatically adjusts the valve opening degree of the corresponding pipeline, realizes the dynamic adjustment of the flow and flow rate, and avoids local overheating or insufficient cooling.

[0030] Example three:

[0031] As shown in the figure, Figure 7 The above bearing and stator double heat source liquid cooling assembly, the first liquid cooling assembly 21 and the second liquid cooling assembly 22 are provided with heat-conducting disturbance assemblies; The heat-conducting disturbance assembly comprises a plurality of equidistantly distributed annular micro-bosses 2105 integrally formed on the first heat-conducting ring surface 2104 and the second heat-conducting ring surface 2204, which can increase the actual contact area between the liquid cooling jacket and the outer circumferential surface of the bearing, and further reduce the thermal resistance and improve the heat-conducting efficiency by embedding into the micro-texture of the outer circumferential surface of the bearing; The annular heat-conducting areas 2106 are formed between the adjacent two annular micro-bosses 2105, and the annular heat-conducting areas 2106 are filled with heat-conducting silicone grease, which can fill the small gaps between the annular micro-bosses, eliminate the air thermal resistance, and further strengthen the heat transfer effect; The inner circumferential surfaces of the first annular flow channel 2103 and the second annular flow channel 2203 are further integrally formed with a plurality of disturbance columns 2107 distributed in a zigzag manner, which can destroy the laminar flow state of the cooling liquid in the flow channel, form turbulent flow, improve the heat exchange efficiency between the cooling liquid and the flow channel wall, and avoid local over-high temperature rise of the cooling liquid.

[0032] The stator-side liquid cooling mechanism 3 further comprises a sealing plate 36 in the form of an arc-shaped plate, which is adapted to the outer circumferential surface of the stator liquid cooling jacket 31. The sealing plate 36 is detachably connected to the stator liquid cooling jacket 31 by bolts, and the spiral liquid cooling pipe 34 is tightly fixed in the spiral embedding groove 33. The detachable connection facilitates the installation, replacement and maintenance of the spiral liquid cooling pipe. The spiral liquid cooling pipe 34 is a copper pipe with a pipe diameter matched with the groove width of the spiral embedding groove 33, so as to achieve close fitting. The copper pipe has excellent heat-conducting performance, which can quickly take away the heat transferred from the stator to the liquid cooling jacket, thereby improving the heat dissipation efficiency. The first water guide pipe 2102, the second water guide pipe 2202 and the third water guide pipe 35 are all made of stainless steel pipes, and the outer walls of which are wrapped with polyurethane thermal insulation layers. The stainless steel pipes have good corrosion resistance and rigidity, and are suitable for long-term transportation of cooling liquid. The thermal insulation layers can reduce heat loss of the cooling liquid during transportation, ensure that the cooling liquid maintains a relatively low temperature when entering the liquid cooling mechanism, and improve the heat dissipation effect.

[0033] In addition, the matching structure of the spiral liquid cooling pipe and the spiral embedding groove can not only ensure the heat dissipation effect, but also reduce the radial space occupied by the liquid cooling mechanism, thereby facilitating the arrangement of the motorized spindle in a narrow installation environment. The heat-conducting disturbance assembly does not need to be driven by an additional power source, but can realize turbulent flow strengthening by the flow of the cooling liquid itself, thereby simplifying the structure and reducing energy consumption.

[0034] The complete working principles of the above-mentioned embodiments one to three are as follows: First, in use, the external cooling source is started to output cooling liquid, which is delivered to the electromagnetic diverter valve through the pipeline, and after being preliminarily distributed by the electromagnetic diverter valve, flows into the bearing-side first liquid cooling assembly 21, the second liquid cooling assembly 22 and the stator-side liquid cooling mechanism 3 through the first water guide pipe 2102, the second water guide pipe 2202 and the third water guide pipe 35 respectively, forming a bearing-side and stator-side double-path independent cooling branch.

[0035] Specifically, for the bearing side: the first liquid cooling jacket 2101 is in interference fit with the front end bearing set 15, and the second liquid cooling jacket 2201 is in interference fit with the rear end bearing set 16, and the friction heat generated by the operation of the bearings is quickly transmitted to the liquid cooling jacket through the first heat conduction ring surface 2104 and the second heat conduction ring surface 2204, and then taken away by the cooling liquid in the first annular flow channel 2103 and the second annular flow channel 2203; and in the heat conduction disturbance assembly, the annular micro-boss 2105 increases the contact area, the heat conduction silicone grease in the heat conduction area 2106 fills the gap to reduce the thermal resistance, and the disturbance column 2107 destroys the laminar flow state of the cooling liquid to strengthen the heat exchange efficiency.

[0036] Specifically, for the stator side: the stator liquid cooling jacket 31 is interference fitted with the stator 14, and the electromagnetic heat generated by the stator is transmitted to the liquid cooling jacket, and then led out through the spiral liquid cooling pipe 34 in the spiral slot 33, and the spiral structure prolongs the heat exchange path of the cooling liquid to ensure uniform heat dissipation of the stator in the circumferential direction.

[0037] At the same time, the temperature of the first liquid cooling jacket 2101, the second liquid cooling jacket 2201 and the stator liquid cooling jacket 31 is detected in real time by the temperature sensor, which indirectly reflects the heating state of the corresponding heat source, and the signal is transmitted to the electromagnetic diverter valve; the electromagnetic diverter valve automatically adjusts the opening degree of each branch valve according to the temperature difference, and distributes a larger flow and flow rate to the heat source with higher heat generation, so as to realize "on-demand cooling" and avoid local overheating or waste of cooling resources.

[0038] The cooling liquid that has completed heat exchange is returned to the external cooling source through the return liquid pipeline to form a closed loop circulation; the stator-side sealing plate 36 is detachably arranged to facilitate the installation, replacement and maintenance of the spiral liquid cooling pipe 34, and to improve the reliability of the long-term operation of the assembly.

[0039] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not change the essence of the corresponding technical solutions beyond the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric spindle, comprising an electric spindle body (1), the electric spindle body (1) comprising a central spindle (101), a front end cover (11), a rear end cover (12), a working end (13), a stator (14), a front end bearing assembly (15), and a rear end bearing assembly (16). Its features are, It also includes a bearing-side liquid cooling mechanism (2) for cooling the bearing and a stator-side liquid cooling mechanism (3) for cooling the stator, as well as a flow regulating mechanism for dynamically adjusting the cooling flow rate. The bearing-side liquid cooling mechanism (2) includes a first liquid cooling component (21) adapted to the front bearing assembly (15) and a second liquid cooling component (22) adapted to the rear bearing assembly (16). The stator-side liquid cooling mechanism (3) is adapted to the stator (14); The flow regulation mechanism includes an electromagnetic diverter valve, which is connected to the pipelines of the bearing-side liquid cooling mechanism (2) and the stator-side liquid cooling mechanism (3) respectively, and is used to distribute the cooling flow according to the temperature difference of the heat source.

2. A dual-heat-source liquid cooling assembly for bearings and stator, applied to the electric spindle of claim 1, characterized in that, The first liquid cooling assembly (21) includes a first liquid cooling jacket (2101), a first annular flow channel (2103) is provided in the first liquid cooling jacket (2101), the first liquid cooling jacket (2101) is connected to the electromagnetic diverter valve through a first water pipe (2102), the electromagnetic diverter valve is connected to an external cooling source, and the first liquid cooling jacket (2101) has a first thermally conductive annular surface (2104) that fits against the outer peripheral surface of the front bearing assembly (15). The second liquid cooling assembly (22) includes a second liquid cooling jacket (2201), a second annular flow channel (2203) is provided inside the second liquid cooling jacket (2201), the second liquid cooling jacket (2201) is connected to an external cooling source through a second water guide pipe (2202), and the second liquid cooling jacket (2201) has a second heat-conducting annular surface (2204) that fits against the outer peripheral surface of the rear bearing assembly (16). The stator-side liquid cooling mechanism (3) includes a stator liquid cooling jacket (31), on which a spiral groove (33) is provided, and a spiral liquid cooling tube (34) is adapted in the spiral groove (33). The spiral liquid cooling tube (34) is connected to the electromagnetic diverter valve through a third water guide pipe (35). It also includes temperature sensors, which are respectively disposed on the first liquid cooling assembly (21), the second liquid cooling assembly (22) and the stator side liquid cooling mechanism (3), and are electrically connected to the electromagnetic diversion valve, for sending the detected temperature signal to the electromagnetic diversion valve to adjust the supply flow and velocity of each pipeline.

3. The bearing and stator dual-heat source liquid cooling assembly according to claim 2, characterized in that, The first liquid cooling sleeve (2101) is interference-fitted with the front bearing assembly (15), the second liquid cooling sleeve (2201) is interference-fitted with the rear bearing assembly (16), and the stator liquid cooling sleeve (31) is interference-fitted with the stator (14).

4. The bearing and stator dual-heat source liquid cooling assembly according to claim 2, characterized in that, Both the first liquid cooling assembly (21) and the second liquid cooling assembly (22) are provided with heat-conducting turbulence components; The thermally conductive turbulence component includes: a plurality of annular micro-protrusions (2105) evenly distributed on the first thermally conductive annular surface (2104) and the second thermally conductive annular surface (2204), a thermally conductive region (2106) is formed between two adjacent annular micro-protrusions (2105), the thermally conductive region (2106) is filled with thermally conductive silicone grease, and a plurality of staggered turbulence protrusions (2107) are also provided on the inner circumferential surfaces of the first annular flow channel (2103) and the second annular flow channel (2203).

5. The bearing and stator dual-heat source liquid cooling assembly according to claim 2, characterized in that, The front bearing assembly (15) consists of at least two parallel bearings, and the rear bearing assembly (16) consists of at least four parallel bearings.

6. The bearing and stator dual-heat source liquid cooling assembly according to claim 2, characterized in that, The stator-side liquid cooling mechanism (3) further includes a sealing plate (36), which is adapted to the outer peripheral surface of the stator liquid cooling jacket (31).

7. The bearing and stator dual-heat source liquid cooling assembly according to claim 4, characterized in that, The height of the annular micro-protrusion (2105) is 0.1-0.2 mm, the diameter of the turbulence protrusion (2107) is 1 mm, and the turbulence protrusion (2107) is arranged in a staggered pattern.

8. The bearing and stator dual-heat source liquid cooling assembly according to claim 2, characterized in that, The spiral liquid cooling tube (34) is a copper tube, and the diameter of the spiral liquid cooling tube (34) is adapted to the groove width of the spiral groove (33).

9. The bearing and stator dual-heat-source liquid cooling assembly according to claim 6, characterized in that, The sealing plate (36) and the stator liquid cooling jacket (31) are detachably connected by bolts.

10. The bearing and stator dual-heat source liquid cooling assembly according to claim 2, characterized in that, The first water pipe (2102), the second water pipe (2202) and the third water pipe (35) are all made of stainless steel and have an insulation layer on their outer wall.

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