Water-cooled motor for heat dissipation of motor output shaft

Abstract

The invention discloses a water-cooled motor for radiating a motor output shaft. The water-cooled motor comprises a motor main body and the motor output shaft extending out of the motor main body, the motor body comprises a motor shell and an electromagnetic assembly used for driving a motor output shaft to rotate, the motor output shaft penetrates through the motor shell, and a supporting bearing used for supporting the motor output shaft to rotate is arranged in the motor shell. An output shaft of the motor comprises a water path connecting rod and a driving sleeve rod sleeving the water path connecting rod, and the driving sleeve rod is driven by the electromagnetic assembly; compared with the prior art, the output shaft of the motor is provided with the driving sleeve rod and the waterway connecting rod located in the driving sleeve rod, and the waterway connecting rod is always in a relatively static state when the driving sleeve rod is driven by the electromagnetic assembly, so that the requirement of water inflow through the waterway connecting rod is met; meanwhile, water flow in the water path connecting rod sequentially flows through the cooling water path and the heat exchange water path, water flow in the heat exchange water path achieves heat absorption of the driving sleeve rod, and therefore the outward transfer amount of heat of the output shaft of the motor is reduced.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically to a water-cooled motor for dissipating heat from the output shaft of a motor. Background Technology

[0002] During the use of an electric motor, the motor output shaft is affected by its own friction and heat conduction from the motor body. Heat is transferred to external structures through the motor output shaft. During the grinding process, since the moving grinding disc usually needs to be driven by the motor, the heat transfer from the motor output shaft can damage vitamins and deactivate active substances in food. For example, when grinding wheat flour or fruit and vegetable powder, temperatures exceeding 60°C can destroy B vitamins and vitamin C. Enzymes in nuts and beans can be activated at high temperatures, accelerating oil oxidation and causing the powder to develop a rancid taste. At the same time, if the grinding temperature of probiotic powder or protein powder is too high, the active ingredients will be deactivated.

[0003] Meanwhile, the heating during the grinding process can easily cause the material to soften and stick together, which may lead to the material sticking to the inner wall of the grinding chamber or the screen after grinding. This can cause difficulties in powder discharge, screen blockage, and the finished product to clump together. Furthermore, as the temperature gradually increases, the material generally becomes more tough, requiring more power during grinding and resulting in uneven particle size.

[0004] The heat generated on the output shaft of a current motor comes from the friction between the output shaft and the bearings inside the motor, as well as the heat generated by the stator and rotor inside the motor during operation.

[0005] Chinese patent CN212969351 discloses a novel water-cooled motor, comprising a housing, a motor body fixedly connected to the inner wall of the housing, a water-cooled box fixedly connected to the right side of the housing, a chiller fixedly connected to the inner bottom wall of the water-cooled box, a partition and a fixed plate respectively provided inside the water-cooled box, the left and right sides of the partition and the left and right sides of the fixed plate being fixedly connected to the inner side wall of the water-cooled box, a circulation pump fixedly connected to the inner top wall of the water-cooled box, the input end of the circulation pump penetrating through the fixed plate and extending below the fixed plate, the output end of the circulation pump being fixedly connected to a circulation pipe, and the end of the circulation pipe away from the circulation pump penetrating the water-cooled box and the housing in sequence and extending into the interior of the water-cooled box.

[0006] The novel motor disclosed above has an independently operating refrigeration unit inside the motor housing. The cold air generated by the refrigeration unit cools the inside of the motor housing. However, since the bearings used to support the rotation of the output shaft are usually located at the end of the motor housing, the amount of cold air transferred to the bearings is relatively small, which is difficult to meet the cooling requirements of the output shaft. At the same time, this structure greatly increases the overall size of the motor, and the refrigeration unit will also generate a certain amount of heat during operation, affecting the grinding temperature. Summary of the Invention

[0007] The present invention aims to overcome the defects in the prior art and provide a water-cooled motor with stable cooling effect and external circulation structure for dissipating heat from the motor output shaft.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a water-cooled motor for dissipating heat from the output shaft of a motor, comprising a motor body and a motor output shaft extending outside the motor body; the motor body includes a motor housing and an electromagnetic component for driving the motor output shaft to rotate, the motor output shaft is disposed through the motor housing, and a support bearing for supporting the rotation of the motor output shaft is provided inside the motor housing; the motor output shaft includes a water channel connecting rod and a drive sleeve rod sleeved outside the water channel connecting rod, the drive sleeve rod being driven by the electromagnetic component; a cooling water channel is formed inside the water channel connecting rod, and a heat exchange water channel is formed between the water channel connecting rod and the drive sleeve rod for exchanging heat with the cooling water channel, and the cooling water channel and the heat exchange water channel are connected, the heat exchange water channel simultaneously exchanging heat with the cooling water channel and the drive sleeve rod.

[0009] As a preferred embodiment of the present invention, the end of the drive sleeve is provided with an end cap for sealing the drive sleeve, and the end of the water circuit connecting rod is provided with a plurality of diverter plates that are gap-fitted with the end cap, and a connecting channel is formed between adjacent diverter plates to connect the cooling water circuit and the heat exchange water circuit.

[0010] As a preferred embodiment of the present invention, a plurality of the diverter plates are arranged along the length direction of the water channel connecting rod, and the plurality of diverter plates are equidistantly arranged along the circumferential direction of the end of the water channel connecting rod, and a sinking groove corresponding to the end of the water channel connecting rod is formed in the middle of the end cap.

[0011] In a preferred embodiment of the present invention, the water circuit connecting rod and the drive sleeve are vertically arranged, and the cooling water circuit and the hot water exchange circuit are also vertically arranged accordingly, with the hot water exchange circuit sleeved outside the cooling water circuit.

[0012] In a preferred embodiment of the present invention, the water circuit connecting rod extends downward along the opening of the drive sleeve rod, the opening of the water circuit connecting rod is provided with a water circuit interface, the opening of the drive sleeve rod is provided with a sleeve rod interface, and the water circuit interface and the sleeve rod interface are connected by a pipeline to form an external circulation structure.

[0013] As a preferred embodiment of the present invention, the opening of the drive sleeve is provided with a connector for supporting the water passage connecting rod. The connector covers the opening of the water passage connecting rod, and a support ring is formed in the middle of the connector to be sleeved on the end of the water passage connecting rod. A support piece is formed inside the support ring to abut against the end of the water passage connecting rod. A connection port is formed in the middle of the support piece to facilitate the connection between the water passage interface and the water passage connecting rod.

[0014] As a preferred embodiment of the present invention, the connector is formed with a plurality of water outlet grooves communicating with the opening of the drive sleeve rod, and the plurality of water outlet grooves are arranged around the support ring.

[0015] As a preferred embodiment of the present invention, a water collection seat for receiving the water flow after heat exchange is provided below the motor body, the water outlet is connected to the top of the water collection seat, the sleeve interface is connected to the bottom of the water collection seat, and the water channel interface passes through the water collection seat and the connector and is connected to the water channel connecting rod.

[0016] As a preferred embodiment of the present invention, the bottom of the water collection base is provided with an overhead support for suspending the water collection base.

[0017] As a preferred embodiment of the present invention, the outer wall of the drive sleeve is formed with a keyway and a key for driving the external component to rotate synchronously.

[0018] Compared with the existing technology, by setting the motor output shaft as a drive sleeve and a water circuit connecting rod located inside the drive sleeve, and under the drive of the drive sleeve driven by the electromagnetic component, the water circuit connecting rod is always in a relatively static state, which meets the requirement of water entering through the water circuit connecting rod. At the same time, the water flow in the water circuit connecting rod flows through the cooling water circuit and the heat exchange water circuit in sequence. The water flow in the heat exchange water circuit absorbs heat from the drive sleeve, thereby reducing the amount of heat transferred outward from the motor output shaft. The water flow in the hot water exchange circuit absorbs heat from the drive sleeve rod while exchanging heat with the water flow in the hot water exchange circuit, thereby improving the heat absorption of the water flow in the hot water exchange circuit and the heat dissipation effect on the drive sleeve rod. After absorbing heat, the water flows to the pipes connected to the water interface and the sleeve interface, and exchanges heat with the outside air to achieve an external circulation structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram showing the connection between the electromagnetic components and the motor output shaft; Figure 3 This is a schematic diagram of the motor output shaft; Figure 4 yes Figure 3 A cross-sectional view of the AA plane; Figure 5 yes Figure 4 A magnified view of a section at point A in the middle; Figure 6 This is a connection diagram of the waterway linkage; Figure 7 yes Figure 6 A magnified view of a section at point B in the middle; Figure 8 This is a structural diagram of the connector; Reference numerals: 1. Motor body; 2. Motor housing; 3. Electromagnetic assembly; 4. Motor output shaft; 41. Keyway; 42. Key; 5. Drive sleeve rod; 51. Hot water exchange circuit; 52. End cover; 53. Sinking groove; 54. Sleeve rod interface; 6. Water circuit connecting rod; 61. Cooling water circuit; 62. Diverter plate; 63. Connecting channel; 64. Water circuit interface; 7. Connector; 71. Support ring; 72. Support plate; 73. Connecting port; 74. Water outlet groove; 8. Water collection base; 9. Overhead base. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-8 As shown, a water-cooled motor for dissipating heat from a motor output shaft 4 includes a motor body 1 and a motor output shaft 4 extending outside the motor body 1. The motor body 1 includes a motor housing 2 and an electromagnetic component 3 for driving the motor output shaft 4 to rotate. The motor output shaft 4 passes through the motor housing 2, and a support bearing 21 for supporting the rotation of the motor output shaft 4 is provided inside the motor housing 2. The motor output shaft 4 includes a water channel connecting rod 6 and a drive sleeve 5 sleeved outside the water channel connecting rod 6. The drive sleeve 5 is driven by the electromagnetic component 3. A cooling water channel 61 is formed inside the water channel connecting rod 6, and a heat exchange water channel 51 is formed between the water channel connecting rod 6 and the drive sleeve 5 to exchange heat with the cooling water channel 61. The cooling water channel 61 and the heat exchange water channel 51 are connected, and the heat exchange water channel 51 exchanges heat with both the cooling water channel 61 and the drive sleeve 5.

[0022] Electromagnetic component 3 includes a stator and a rotor that cooperate with each other. The motor output shaft 4 is connected to the rotor, and the motor output shaft 4 rotates synchronously with the rotor. The rotor conductor carrying induced current is subjected to an electromagnetic force in the rotating magnetic field of the stator. The direction of the electromagnetic force can be determined by the left-hand rule. The resultant force forms a torque that drives the rotor to rotate, i.e., electromagnetic torque. The rotor begins to rotate under the action of electromagnetic torque, and transmits power to the motor output shaft 4 through a mechanical structure.

[0023] Two support bearings 21 are provided on the motor output shaft 4. The two support bearings 21 are respectively set at both ends of the motor housing 2. Based on the fact that the motor output shaft 4 passes through the motor housing 2, the motor output shaft 4 has better stability during rotation.

[0024] The water passage connecting rod 6 serves as the water inlet of the drive sleeve rod 5. During the water inlet process of the water passage connecting rod 6, the drive sleeve rod 5 is subjected to water pressure from the water passage connecting rod 6 to discharge water. During the water outlet process of the water passage connecting rod 6, the water flows through the outer walls of the water passage connecting rod 6 and the drive sleeve rod 5. While absorbing the heat from the outer wall of the drive sleeve rod 5, the water flow and the water flow inside the water passage connecting rod 6 exchange heat through the outer wall of the water passage connecting rod 6, thereby cooling the drive sleeve rod 5 and reducing the amount of heat transferred outward from the drive sleeve rod 5.

[0025] The end of the drive sleeve 5 is provided with an end cap 52 for sealing the drive sleeve 5, and the end of the water circuit connecting rod 6 is provided with a number of diverter plates 62 that are in clearance fit with the end cap 52. A connecting channel 63 is formed between adjacent diverter plates 62, which connects the cooling water circuit 61 and the heat exchange water circuit 51.

[0026] The end cap 52 is located at the output end of the drive sleeve 5. Under the action of the end cap 52, the drive sleeve 5 forms an open-end and sealed-end structure. Under the action of the end cap 52, the water flow received by the water channel connecting rod 6 can be guided. After the water flow passes through the water channel connecting rod 6, it connects with the end cap 52 and is guided into the drive sleeve 5 under the action of the end cap 52.

[0027] Several diverter plates 62 are arranged along the length of the water channel connecting rod 6, and several diverter plates 62 are equidistantly arranged along the circumferential direction of the end of the water channel connecting rod 6. A sinking groove 53 corresponding to the end of the water channel connecting rod 6 is formed in the middle of the end cap 52.

[0028] The number of diverter plates 62 is set according to actual needs. The diverter plates 62 are set to ensure that while the diverter plates 62 are set in the sink trough 53, the connecting channels 63 between adjacent diverter plates 62 meet the requirement that water flows from the waterway connecting rod 6 into the drive sleeve rod 5.

[0029] Simultaneously, under the action of the sinking trough 53, when the drive sleeve 5 rotates synchronously with the rotor, the drive sleeve 5 rotates relative to the water circuit connecting rod 6. By setting the diverter 62 at the end of the water circuit connecting rod 6 in the sinking trough 53, the sinking trough 53 limits the position of the diverter 62 at the end of the water circuit connecting rod 6 during the rotation of the drive sleeve 5, ensuring the stability of the water circuit connecting rod 6 during the rotation of the drive sleeve 5.

[0030] The water circuit connecting rod 6 and the drive sleeve rod 5 are set vertically, and the cooling water circuit 61 and the hot water exchange circuit 51 are also set vertically accordingly. The hot water exchange circuit 51 is sleeved outside the cooling water circuit 61.

[0031] The water circuit connecting rod 6 extends downward along the opening of the drive sleeve rod 5. The opening of the water circuit connecting rod 6 is provided with a water circuit interface 64, and the opening of the drive sleeve rod 5 is provided with a sleeve rod interface 54. The water circuit interface 64 and the sleeve rod interface 54 are connected by a pipeline to form an external circulation structure.

[0032] A water pump is installed on the pipeline connecting the water interface 64 and the sleeve interface 54. Under the action of the water pump, the direction of water flow is determined and the water flow is driven to move. The water flows in from the bottom of the water link 6. Under the action of the water pump's delivery pressure, the water flows from bottom to top in the water link 6. Under the action of the water flow's own gravity, the water flow is ensured to be full in the water link 6.

[0033] The water flows sequentially through the cooling water passage 61 and the heat exchange water passage 51. The water flowing into the heat exchange water passage 51 absorbs the heat from the outer wall of the drive sleeve 5 and the surface heat from the motor output shaft 4. At the same time, the water that has absorbed the heat exchanges heat with the cooling water passage 61, ensuring that the water in the heat exchange water passage 51 absorbs heat from the outer wall of the drive sleeve 5.

[0034] The opening of the drive sleeve 5 is provided with a connector 7 for supporting the water passage connecting rod 6. The connector 7 covers the opening of the water passage connecting rod 6, and a support ring 71 is formed in the middle of the connector 7, which is sleeved on the end of the water passage connecting rod 6. A support piece 72 is formed inside the support ring 71, which abuts against the end of the water passage connecting rod 6. A connection port 73 is formed in the middle of the support piece 72 to facilitate the connection between the water passage interface 64 and the water passage connecting rod 6.

[0035] The connector 7 is screwed onto the drive sleeve 5 by threads, thereby connecting the connector 7 to the bottom of the vertically set drive sleeve 5. The connector 7 provides support for the water channel connecting rod 6. The bottom of the vertically set water channel connecting rod 6 abuts against the support plate 72, thereby achieving stable setting of the water channel connecting rod 6 within the drive sleeve 5.

[0036] Simultaneously, under the action of the support ring 71, the support ring 71 and the support plate 72 achieve sleeve connection to the bottom of the water channel connecting rod 6. Thus, with the connector 7 and the end cap 52 respectively set at the two ends of the water channel connecting rod 6, when the drive sleeve 5 rotates synchronously with the rotor, the drive sleeve 5 rotates relative to the water channel connecting rod 6. The sinking trough 53 and the connector 7 limit the position of the two ends of the water channel connecting rod 6, ensuring the stability of the water channel connecting rod 6 during the rotation of the drive sleeve 5.

[0037] The connector 7 has a plurality of water outlet grooves 74 that communicate with the opening of the drive sleeve 5, and the plurality of water outlet grooves 74 are arranged around the support ring 71.

[0038] The motor body 1 is provided with a water collection seat 8 for receiving the water flow after heat exchange. The water outlet trough 74 is connected to the top of the water collection seat 8, the sleeve interface 54 is connected to the bottom of the water collection seat 8, and the water channel interface 64 passes through the water collection seat 8 and the connector 7 and is connected to the water channel connecting rod 6.

[0039] The water collection base 8 is designed to slow down the movement speed of the water flow inside the drive sleeve 5. The water flow inside the drive sleeve 5 flows downward under its own weight and water pressure. However, since there is always water stored in the water collection base 8, the water flow inside the drive sleeve 5 is affected by the amount of water in the water collection base 8, which can slow down the flow speed of the water inside the drive sleeve 5, thereby improving the heat absorption effect of the water flow on the outer wall of the drive sleeve 5.

[0040] The bottom of the water collection seat 8 is provided with an overhead seat 9 for suspending the water collection seat 8, which satisfies the overhead setting of the water channel interface 64 and the sleeve interface 54.

[0041] The outer wall of the drive sleeve 5 has keyways 41 and keys 42 for driving the external components to rotate synchronously. Under the action of keyways 41 and keys 42, the motor output shaft 4 drives the grinding disc to rotate.

[0042] In actual use, under the action of the water pump on the pipeline connected to the water interface 64 and the sleeve interface 54, water flows from the bottom of the water connecting rod 6 and flows from bottom to top along the cooling water channel 61. At the same time, the corresponding water in the heat exchange channel 51 also flows downward synchronously. As the cooling water channel 61 flows, the water in the heat exchange channel 51 absorbs the heat from the outer wall of the driving sleeve 5 and exchanges heat with the water in the cooling water channel 61. After absorbing heat, the water flows through the water collection seat 8 to the pipeline connected to the water interface 64 and the sleeve interface 54, where it exchanges heat with the outside air. After cooling, it re-enters the cooling water channel 61 to exchange heat with the water in the heat exchange channel 51 again, forming an external circulation structure.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention; therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0044] Although this document uses numerous reference numerals from the accompanying drawings—including motor body 1, motor housing 2, electromagnetic assembly 3, motor output shaft 4, keyway 41, key 42, drive sleeve 5, hot water exchange circuit 51, end cover 52, sinkhole 53, sleeve interface 54, water circuit connecting rod 6, cooling water circuit 61, flow divider 62, connecting channel 63, water circuit interface 64, connector 7, support ring 71, support plate 72, connection port 73, water outlet 74, water collection base 8, and overhead base 9—the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A water-cooled motor for dissipating heat from the motor output shaft, comprising a motor body and a motor output shaft extending beyond the motor body; characterized in that, The motor body includes a motor housing and an electromagnetic component for driving the motor output shaft to rotate. The motor output shaft passes through the motor housing, and a support bearing for supporting the rotation of the motor output shaft is provided inside the motor housing. The motor output shaft includes a water channel connecting rod and a drive sleeve rod sleeved outside the water channel connecting rod. The drive sleeve rod is driven by the electromagnetic component. A cooling water channel is formed inside the water channel connecting rod, and a heat exchange water channel is formed between the water channel connecting rod and the drive sleeve rod to exchange heat with the cooling water channel. The cooling water channel and the heat exchange water channel are connected, and the heat exchange water channel exchanges heat with both the cooling water channel and the drive sleeve rod.

2. A water-cooled motor for dissipating heat from the output shaft of a motor according to claim 1, characterized in that, The end of the drive sleeve is provided with an end cap for sealing the drive sleeve, and the end of the water circuit connecting rod is provided with several diverter plates that abut against the end cap. Adjacent diverter plates form a connecting channel between the cooling water circuit and the heat exchange water circuit.

3. A water-cooled motor for dissipating heat from the motor output shaft according to claim 2, characterized in that, Several of the aforementioned diverter plates are arranged along the length of the water channel connecting rod, and the several diverter plates are equidistantly arranged along the circumferential direction of the end of the water channel connecting rod.

4. A water-cooled motor for dissipating heat from the output shaft of a motor according to claim 1, characterized in that, The water circuit connecting rod and drive sleeve are set vertically, and the cooling water circuit and the hot water exchange circuit are also set vertically accordingly, with the hot water exchange circuit sleeved outside the cooling water circuit.

5. A water-cooled motor for dissipating heat from the motor output shaft according to claim 4, characterized in that, The water circuit connecting rod extends downward along the opening of the drive sleeve rod. The opening of the water circuit connecting rod is provided with a water circuit interface, and the opening of the drive sleeve rod is provided with a sleeve rod interface. The water circuit interface and the sleeve rod interface are connected by a pipeline to form a circulation structure.

6. A water-cooled motor for dissipating heat from the output shaft of a motor according to claim 5, characterized in that, The drive sleeve opening is provided with a connector for supporting the water passage connecting rod. The connector covers the opening of the water passage connecting rod, and a support ring is formed in the middle of the connector to abut against the opening of the water passage connecting rod. A connection port is formed in the middle of the support ring to facilitate the connection between the water passage interface and the water passage connecting rod.

7. A water-cooled motor for dissipating heat from the output shaft of a motor according to claim 6, characterized in that, The connector has several water outlet grooves that communicate with the opening of the drive sleeve rod, and the several water outlet grooves are arranged around the support ring.

8. A water-cooled motor for dissipating heat from the output shaft of a motor according to claim 7, characterized in that, The motor body is provided with a water collection base for receiving the water flow after heat exchange. The water outlet is connected to the top of the water collection base, the sleeve interface is connected to the bottom of the water collection base, and the water channel interface passes through the water collection base and the connector and is connected to the water channel connecting rod.

9. A water-cooled motor for dissipating heat from the output shaft of a motor according to claim 8, characterized in that, The bottom of the water collection base is provided with an overhead support for suspending the water collection base.

10. A water-cooled motor for dissipating heat from the output shaft of a motor according to claim 1, characterized in that, The outer wall of the drive sleeve has a keyway and a key for driving the external components to rotate synchronously.

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