Energy-saving motor with heat dissipation mechanism capable of being adjusted along with speed

Abstract

The invention relates to the technical field of motor heat dissipation, in particular to an energy-saving motor with a speed-adjustable heat dissipation mechanism, which comprises a casing internally provided with a stator, end covers mounted at two ends of the casing, a rotor matched with the stator arranged in the casing and mounted on a rotating shaft, and shaft cooling modules detachably mounted on the two end covers. The shaft cooling modules are filled with lubricating oil, sealing plates are detachably installed on the end faces of the two shaft cooling modules, sealing assemblies for supporting the rotating shaft and sealing the shaft cooling modules are arranged between the end covers and the shaft cooling modules and between the shaft cooling modules and the sealing plates, and the two ends of the rotating shaft penetrate through the end covers, the shaft cooling modules, the sealing plates and the sealing assemblies. Compared with the prior art that heat of the stator is dissipated through the casing and heat on the rotor is difficult to conduct and dissipate, the rotor can be dissipated, and the temperature in the motor is further reduced.

Description

Technical Field

[0001] This invention relates to the field of motor heat dissipation technology, and specifically to an energy-saving motor with a speed-adjustable heat dissipation mechanism. Background Technology

[0002] Electric motors, as commonly used devices, are widely applied in production and daily life. An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to provide power for various electrical appliances or machinery. For example, in the field of electric vehicles, the motor generates driving torque, serving as the power source for the electric vehicle's movement. During operation, electric motors generate a significant amount of heat. If this heat is not dissipated in time, it will cause the motor temperature to rise, ultimately shortening its lifespan or even causing it to burn out due to overheating during operation.

[0003] Therefore, in existing technologies, heat dissipation fins are often installed on the surface of the motor housing, and a fan is added to the tail of the motor to blow air onto the heat dissipation fins for cooling. Although the stator installed inside the motor housing is cooled, the rotor inside the motor cannot be cooled.

[0004] The information disclosed in the background section is only intended to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to design an energy-saving motor that can dissipate heat from the stator inside the motor, in order to overcome the above-mentioned shortcomings in the technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving motor with a speed-adjustable heat dissipation mechanism, comprising a housing in which a stator is installed, end covers at both ends of the housing, a rotor that cooperates with the stator inside the housing, the rotor being mounted on a rotating shaft, a shaft cooling module being detachably mounted on each of the two end covers, the shaft cooling module being filled with lubricating oil, a sealing plate being detachably mounted on each end face of the two shaft cooling modules, and a sealing assembly supporting the rotating shaft and sealing the shaft cooling module being provided between the end covers and the shaft cooling module, and between the shaft cooling module and the sealing plate, wherein both ends of the rotating shaft pass through the end covers, the shaft cooling module, the sealing plate and the sealing assembly.

[0007] Preferably, the shaft cooling module includes a housing with a cooling cavity, recessed slots fixedly connected to both sides of the housing, and heat dissipation fins that penetrate the housing and are fixedly connected to the housing. The lubricant fills the cooling cavity, one end of the heat dissipation fin is inserted into the lubricant, and the other end is exposed outside the housing. The rotating shaft penetrates the recessed slots and has a gap with the recessed slots.

[0008] Preferably, the end cap and the sealing plate have an annular stepped groove on the side opposite to the housing. The annular stepped groove and the recessed support groove form a sealing cavity. The sealing assembly includes an oil seal located in the annular stepped groove and a bearing located in the recessed support groove. When the oil seal is installed on the rotating shaft, the lubricating oil in the cooling cavity simultaneously contacts the rotating shaft and the bearing.

[0009] Preferably, one of the end caps is fixedly connected to the housing, and the other end cap is detachably connected to the housing. A sealing cover is fixedly connected to the end cap fixedly connected to the housing. The sealing cover has oil cooling fins fixedly connected to the outer wall of the housing, and the sealing cover is filled with the lubricating oil.

[0010] Preferably, both the housing and the sealing cover are fixedly connected to liquid passage pipes, and connecting pipes are detachably installed between the liquid passage pipes.

[0011] Preferably, one end of the rotating shaft has a blind hole, and the rotating shaft has a first liquid passage hole and a second liquid passage hole arranged in a ring array. The first liquid passage hole and the second liquid passage hole are respectively connected to the two cooling chambers. The rotating shaft also has a centrifugal protrusion located in one of the cooling chambers.

[0012] Preferably, one of the sealing plates is detachably mounted with a fan cover, the fan cover is provided with an impeller sleeved on the end of the rotating shaft, the end of the rotating shaft is threaded with a nut for pressing the impeller, a sealing head inserted into the blind hole is fixedly installed in the nut, and a guide cover is detachably mounted on the outside of the fan cover, the guide cover has an air inlet on its end face, and the fan cover has an air outlet communicating with the inside of the guide cover.

[0013] Preferably, a support block that fits into the sealing plate is fixedly installed on the flow guide.

[0014] Preferably, the sealing cover is U-shaped and is fixed around the sides and bottom of the housing.

[0015] The technical effects and advantages provided by the present invention in the above technical solution are as follows: This invention installs shaft cooling modules, sealing components, and sealing plates on the end covers at both ends of the housing, and lengthens the shaft to pass through the shaft cooling modules, sealing components, and sealing plates. This allows the heat on the rotor of the motor to be conducted to the shaft cooling modules for heat dissipation during operation. Compared with the prior art, which uses the housing to dissipate heat from the stator, making it difficult to conduct heat away from the rotor, this invention can dissipate heat from the rotor and further reduce the temperature inside the motor. When the shaft is cooled, the lubricating oil in the shaft cooling module can not only conduct heat on the shaft, but also replace the grease in the prior art to lubricate the bearing. It has low frictional resistance and is more suitable for high-speed motors. Meanwhile, when the rotating shaft of this invention rotates, it will also cause the lubricating oil to circulate in the sealing cover and the two shaft cooling modules, so that the heat of the stator is transferred through the housing to the lubricating oil in the sealing cover, and at the same time, the stator and rotor are cooled. The rotating shaft in this invention also drives the impeller at the tail to rotate when it rotates, which, together with the guide shroud, pressurizes and ejects the outside air. The faster the rotation speed, the higher the airflow velocity, forming a high-speed airflow to cool the heat dissipation fins, housing, end cover and sealing plate and other contact parts. No additional heat dissipation equipment is required to assist in heat dissipation, thus achieving energy saving. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a perspective view of the present invention; Figure 3 This is a first sectional view of the present invention; Figure 4 This is a split sectional view of the present invention; Figure 5 This is a second sectional view of the present invention; Figure 6 This is a cross-sectional view of the rotating shaft of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Housing; 2. End cover; 3. Shaft; 4. Shaft cooling module; 401. Cooling chamber; 402. Housing; 403. Recessed groove; 404. Heat dissipation fins; 5. Sealing plate; 6. Sealing assembly; 601. Oil seal; 602. Bearing; 7. Annular stepped groove; 8. Sealing cover; 9. Oil cooling fins; 10. Liquid passage pipe; 11. Connecting pipe; 12. Blind hole; 13. First liquid passage hole; 14. Second liquid passage hole; 15. Centrifugal protrusion; 16. Fan cover; 17. Impeller; 18. Nut; 19. Sealing head; 20. Flow guide; 21. Air inlet; 22. Air outlet; 23. Support block. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] This invention provides, for example Figure 1-6 The energy-saving motor shown includes a speed-adjustable heat dissipation mechanism, comprising a housing 1, a stator fixedly installed inside the housing 1, a rotor cooperating with the stator at its central axis, and a rotor fixedly installed on a rotating shaft 3. An end cover 2 is fixedly installed at one end of the housing 1, and a removable end cover 2 is installed at the other end. A housing 402 is removably installed on the opposite end faces of both end covers 2. The housing 402 has a cooling cavity 401 inside, and recessed grooves 403 protruding into the cooling cavity 401 on both sides of the housing 402. Bearings 602 are installed within the recessed grooves 403. Sealing plates 5 are removably installed on the end faces of both housings 402 away from the housing 1. An annular stepped groove 7 cooperating with the recessed groove 403 is opened on the side of each sealing plate 5 and each end cover 2 opposite to the housing 402. An oil seal 601 cooperating with the bearing 602 is installed within the annular stepped groove 7. The oil seal 601 and the bearing 602... Both are installed on the rotating shaft 3. When the cooling chamber 401 is filled with lubricating oil, the rotating shaft 3 and the bearing 602 come into contact with the lubricating oil at the same time. The oil seal 601 prevents the lubricating oil from leaking from the housing 402, causing contamination of the stator and rotor inside the housing 1. At the same time, the cooling fins 404 inserted into the lubricating oil are also fixedly installed on the housing 402. The other end of the cooling fins 404 extends through the housing 402 to the outside of the housing 402. Here, the cooling fins 404, the housing 402, and the recessed support groove 403 constitute the shaft cooling module 4 that contains the lubricating oil. The annular stepped groove 7 and the recessed support groove 403 constitute the sealed cavity. The bearing 602 and the oil seal 601 constitute the sealing component 6 that supports the rotating shaft 3 and seals the shaft cooling module 4. When the motor is working and generates heat, the heat on the rotor is transferred to the lubricating oil through the rotating shaft 3, and then the heat is conducted to the air through the cooling fins 404 to dissipate heat from the rotor.

[0022] Furthermore, a sealing cover 8 is fixedly installed on the end cover 2, which is fixedly mounted to the housing 1. The sealing cover 8 is U-shaped and surrounds the sides and bottom of the housing 1. Oil cooling fins 9 are fixedly installed on the housing 1. The oil cooling fins 9 located on the sides and bottom of the housing 1 are located inside the sealing cover 8. At the same time, the sealing cover 8 is filled with lubricating oil. The heat generated by the stator is transferred through the housing 1 to the oil cooling fins 9, and then to the lubricating oil. Liquid pipes 10 are fixedly installed on both the sealing cover 8 and the housing 402. A connecting pipe 11 is detachably installed between the liquid pipes 10 on the sealing cover 8 and the liquid pipes 10 on the housing 402, so that the oil in the sealing cover 8 and the lubricating oil in the housing 402 are connected. At the same time, a blind hole 12 is opened at one end of the rotating shaft 3, and a first channel distributed in a ring array is opened on the rotating shaft 3. Liquid holes 13 and 14 are connected to two cooling chambers 401 respectively. A centrifugal protrusion 15 is provided on the rotating shaft 3, which is connected to one of the cooling chambers 401. When the rotating shaft 3 rotates, the centrifugal protrusion 15 will throw the surrounding lubricating oil outward, so that the lubricating oil in this cooling chamber 401 is pressed into the liquid pipe 10, flows into the sealing cover 8 through the connecting pipe 11, and then flows into the other cooling chamber 401 through the liquid pipe 10 and the connecting pipe 11. The oil in the other cooling chamber 401 enters the blind hole 12 through the second liquid hole 14, and then enters the cooling chamber 401 from the first liquid hole 13 and is thrown outward by the centrifugal protrusion 15, so that the lubricating oil flows between the two shaft cooling modules 4 and the sealing cover 8.

[0023] Furthermore, an impeller 17 is fitted onto one end of the shaft 3, and a nut 18 is threaded onto the end of the shaft 3. A sealing head 19, which is inserted into a blind hole 12, is fixedly installed inside the nut 18. Tightening the nut 18 clamps the impeller 17 onto the shaft 3. A fan shroud 16, fitted over the impeller 17, is detachably installed on the sealing plate 5 near the side of the impeller 17. The fan shroud 16 has an air outlet 22 perpendicular to the central axis of the shaft 3. A guide shroud 20 is also detachably installed on the fan shroud 16 to guide the airflow. An air inlet 21 is opened on the end face of the cover 20. The air guide cover 20 is sleeved on the outer side of the housing 1, the shaft cooling module 4 and the sealing plate 5. At the same time, a support block 23 that fits against the sealing plate 5 is fixedly installed inside the air guide cover 20, so that when the rotating shaft 3 rotates, it will drive the impeller 17 to rotate. The impeller 17 draws in the outside air from the air inlet 21, and then throws it onto the inner wall of the air cover 16 by centrifugal force, and then discharges it from the air outlet 22 to form high-speed gas. The high-speed gas dissipates heat from the heat dissipation fins 404, the sealing cover 8 and the housing 402.

[0024] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application.

Claims

1. An energy-saving motor with a speed-adjustable heat dissipation mechanism, comprising a housing (1) in which a stator is installed, end caps (2) installed at both ends of the housing (1), and a rotor cooperating with the stator inside the housing (1), the rotor being mounted on a rotating shaft (3), characterized in that: A shaft cooling module (4) can be detachably installed on both end caps (2). The shaft cooling module (4) is filled with lubricating oil. A sealing plate (5) can be detachably installed on the end face of both shaft cooling modules (4). There is a sealing component (6) between the end cap (2) and the shaft cooling module (4), and between the shaft cooling module (4) and the sealing plate (5) to support the rotating shaft (3) and seal the shaft cooling module (4). Both ends of the rotating shaft (3) pass through the end cap (2), the shaft cooling module (4), the sealing plate (5) and the sealing component (6).

2. The energy-saving motor with a speed-adjustable heat dissipation mechanism according to claim 1, characterized in that: The shaft cooling module (4) includes a housing (402) with a cooling cavity (401), a recessed support groove (403) fixedly connected to both sides of the housing (402), and a heat dissipation fin (404) that penetrates the housing (402) and is fixedly connected to the housing (402). The lubricant is filled in the cooling cavity (401), one end of the heat dissipation fin (404) is inserted into the lubricant, and the other end is exposed outside the housing (402). The rotating shaft (3) penetrates the recessed support groove (403) and has a gap with the recessed support groove (403).

3. The energy-saving motor with a speed-adjustable heat dissipation mechanism according to claim 2, characterized in that: The end cap (2) and the sealing plate (5) have an annular stepped groove (7) on the side opposite to the housing (402). The annular stepped groove (7) and the recessed support groove (403) form a sealing cavity. The sealing assembly (6) includes an oil seal (601) located in the annular stepped groove (7) and a bearing (602) located in the recessed support groove (403). When the oil seal (601) is installed on the rotating shaft (3), the lubricating oil in the cooling cavity (401) simultaneously contacts the rotating shaft (3) and the bearing (602).

4. The energy-saving motor with a speed-adjustable heat dissipation mechanism according to claim 3, characterized in that: One of the end caps (2) is fixedly connected to the housing (1), and the other end cap (2) is detachably connected to the housing (1). A sealing cover (8) is fixedly connected to the end cap (2) fixedly connected to the housing (1). The sealing cover (8) has an oil cooling fin (9) fixedly connected to the outer wall of the housing (1). The sealing cover (8) is filled with the lubricating oil.

5. The energy-saving motor with a speed-adjustable heat dissipation mechanism according to claim 4, characterized in that: Liquid passage pipes (10) are fixedly connected to both the housing (402) and the sealing cover (8), and connecting pipes (11) are detachably installed between the liquid passage pipes (10).

6. The energy-saving motor with a speed-adjustable heat dissipation mechanism according to claim 2, characterized in that: One end of the rotating shaft (3) has a blind hole (12), and the rotating shaft (3) has a first liquid passage hole (13) and a second liquid passage hole (14) arranged in a ring array. The first liquid passage hole (13) and the second liquid passage hole (14) are respectively connected to the two cooling chambers (401). The rotating shaft (3) also has a centrifugal protrusion (15) located in one of the cooling chambers (401).

7. The energy-saving motor with a speed-adjustable heat dissipation mechanism according to claim 6, characterized in that: One of the sealing plates (5) is detachably mounted with a wind cover (16). Inside the wind cover (16) is an impeller (17) fitted onto the end of the rotating shaft (3). The end of the rotating shaft (3) is threaded with a nut (18) that presses the impeller (17). Inside the nut (18) is a sealing head (19) that is inserted into the blind hole (12). A guide shroud (20) is detachably mounted on the outside of the wind cover (16). The guide shroud (20) has an air inlet (21) on its end face. The wind cover (16) has an air outlet (22) that communicates with the inside of the guide shroud (20).

8. The energy-saving motor with a speed-adjustable heat dissipation mechanism according to claim 7, characterized in that: A support block (23) that fits against the sealing plate (5) is fixedly installed on the flow guide (20).

9. The energy-saving motor with a speed-adjustable heat dissipation mechanism according to claim 4, characterized in that: The sealing cover (8) is U-shaped and is fixed around the sides and bottom of the housing (1).

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