High slot fill industrial flat wire motor

Abstract

The utility model provides a kind of high slot fill ratio's industrial flat wire motor, including motor;The motor is composed of shell, end cover, rotor, stator, cooling mechanism and refrigeration mechanism, and guiding mechanism is installed between the stator and shell, and heat conduction mechanism is installed between the stator and shell between guiding mechanism between position, and the cooling mechanism is composed of refrigeration mechanism and cooling cavity, and the cooling cavity is installed in shell outside, and the refrigeration mechanism is installed in cooling cavity outside four quarters, and constant pressure mechanism is installed in the cooling cavity right side top, and the heat conduction mechanism then efficiently transfers the heat generated in stator operation to shell, and then pass through shell to cooling cavity, and the heat transfer medium in cooling cavity, heat transfer oil, can uniformly absorb the heat transferred by shell, cooperate the refrigeration mechanism of four quarters and rapidly reduce oil temperature, realize the efficient heat dissipation of motor whole, and constant pressure mechanism can balance the pressure fluctuation generated due to temperature change in cooling cavity, ensure that heat dissipation system stably operates.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an industrial flat wire motor with high slot fill factor. Background Technology

[0002] High slot fill factor industrial flat wire motors refer to motors with a high degree of conductor filling in the stator slots, used in industrial applications. Slot fill factor is the ratio of the copper conductors filling the stator slots of a motor, that is, the ratio of the cross-sectional area of ​​the conductors in the iron core slot to the total area of ​​the iron core slot opening. Compared to traditional round enameled wire motors, flat wire motors use rectangular cross-section copper flat wires for windings. The flat wires can be arranged closely together with smaller gaps, which can greatly improve the slot fill factor. Generally, the slot fill factor of round wire motors is about 40%, while the slot fill factor of flat wire motors can often reach over 60%.

[0003] Chinese Patent No. 202020843981.7 discloses a stator structure for a high slot fill factor flat wire motor, including a stator core (1), the inner diameter of the stator core (1) being 146-148 mm, the inner circle of the stator core (1) having 72 core slots (2) distributed in a ring, the slot width of the core slots (2) being 3-3.2 mm, the slot depth of the core slots (2) being 13.9-14.3 mm, and the slot opening depth of the core slots (2) being 0.8-1 mm; each core slot (2) is provided with six layers of wires (3), the width of the wires (3) being 2.4-2.6 mm, and the thickness of the wires (3) being 2.05-2.25 mm.

[0004] The above-mentioned technical solution has a poor cooling effect due to the dense arrangement of wires during use, which affects the service life of the motor. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an industrial flat wire motor with high slot fill factor, which solves the problem of poor heat dissipation through a cooling mechanism and a refrigeration mechanism.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high slot fill factor industrial flat wire motor, comprising an electric motor; the electric motor consists of a housing, end caps, a rotor, a stator, a cooling mechanism, and a refrigeration mechanism; the end caps are installed at the front end of the housing; the stator is installed inside the housing; a guide mechanism is installed between the stator and the housing; a heat-conducting mechanism is installed between the stator and the housing at the position between the guide mechanism; the rotor is installed inside the housing at the middle position of the stator; flat wires are wound around the outside of the rotor and the stator; a central shaft is installed at the center of the rotor; the front end of the central shaft extends out of the end cap; the cooling mechanism consists of a refrigeration mechanism and a cooling chamber; the cooling chamber is installed on the outside of the housing; the cooling chamber is filled with heat-conducting oil; the refrigeration mechanism is installed around the outside of the cooling chamber; a constant pressure mechanism is installed on the upper right side of the cooling chamber; and a mounting base is installed at the bottom of the housing.

[0007] Furthermore, the constant pressure mechanism consists of an mounting cylinder, a spring, and a sealing plate. The mounting cylinder is installed on the upper right side of the cooling chamber, the sealing plate is slidably installed inside the mounting cylinder, and the spring is installed inside the mounting cylinder located above the sealing plate.

[0008] Furthermore, the guiding mechanism consists of pins and guide grooves. The guide grooves are located around the outer perimeter of the stator, and the pins are installed around the inner perimeter of the housing. The pins are slidably installed inside the guide grooves.

[0009] Furthermore, the refrigeration mechanism consists of a refrigeration chamber and a semiconductor refrigeration chip. The refrigeration chamber is installed on the upper side and the left and right sides of the cooling chamber, and the semiconductor refrigeration chip is installed in the middle of the interior of the cooling chamber.

[0010] Furthermore, a first heat-conducting plate is installed on the outside of the cooling cavity, with the outside of the first heat-conducting plate extending out of the cooling cavity and the inside of the first heat-conducting plate extending into the cooling cavity to contact the heating end of the semiconductor cooling chip.

[0011] Furthermore, a second heat-conducting plate is installed inside the cooling cavity. The outer side of the second heat-conducting plate extends into the cooling cavity and contacts the cooling end of the semiconductor cooling chip, while the inner side of the second heat-conducting plate extends into the cooling cavity.

[0012] Furthermore, the heat conduction mechanism consists of a third heat conduction plate and a mounting groove. The mounting groove is located around the outside of the stator, and the third heat conduction plate is installed inside the housing. The third heat conduction plate is embedded inside the mounting groove in the section inside the housing.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The heat conduction mechanism efficiently transfers the heat generated during stator operation to the outer casing, and then to the cooling chamber through the outer casing. The heat conduction oil in the cooling chamber acts as a heat transfer medium, which can evenly absorb the heat transferred from the outer casing. Together with the surrounding refrigeration mechanism, it can quickly reduce the oil temperature, thereby achieving efficient heat dissipation of the entire motor. The constant pressure mechanism can balance the pressure fluctuations in the cooling chamber caused by temperature changes, ensuring the stable operation of the heat dissipation system.

[0015] 2. The heat conduction mechanism is a key channel for heat transfer inside the motor. During operation, the stator generates a large amount of heat due to electromagnetic induction. This heat is transferred to the embedded third heat conduction plate through the mounting slot on the outside of the stator. The third heat conduction plate is connected to the inside of the outer casing and can quickly conduct the absorbed heat to the outer casing, and then the outer casing transfers it to the cooling cavity for heat dissipation. The design of the mounting slot ensures close contact between the third heat conduction plate and the stator, increases the heat transfer area, reduces thermal resistance, and enables the heat generated by the stator to be efficiently dissipated. This prevents the stator from being affected by excessive temperature, which could affect its insulation performance and service life. At the same time, it also provides good heat dissipation conditions for the flat wire windings, ensuring that the high slot fill factor performance of the motor can be fully utilized. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the motor of this utility model;

[0018] Figure 3 This is a schematic diagram of the stator structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the outer shell of this utility model;

[0020] Figure 5 This is a schematic diagram of the cooling mechanism of this utility model;

[0021] Figure 6 This is a schematic diagram of the constant pressure mechanism of this utility model.

[0022] The labels in the attached diagram are as follows: 1. Motor; 2. Housing; 3. End cover; 4. Mounting base; 5. Refrigeration mechanism; 6. Cooling mechanism; 7. Central shaft; 8. Rotor; 9. Stator; 10. Guide mechanism; 11. Guide groove; 12. Pin; 13. Third heat-conducting plate; 14. Mounting groove; 15. First heat-conducting plate; 16. Refrigeration cavity; 17. Semiconductor refrigeration chip; 18. Second heat-conducting plate; 19. Cooling cavity; 20. Heat-conducting mechanism; 21. Constant pressure mechanism; 22. Spring; 23. Mounting cylinder; 24. Sealing plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, the meaning of "" is two or more, unless otherwise explicitly specified.

[0025] Example 1

[0026] like Figure 1-6 As shown, this embodiment provides an industrial flat wire motor with high slot fill factor, including a motor 1; the motor 1 consists of a housing 2, an end cover 3, a rotor 8, a stator 9, a cooling mechanism 6, and a refrigeration mechanism 5. The end cover 3 is installed at the front end of the housing 2, the stator 9 is installed inside the housing 2, a guide mechanism 10 is installed between the stator 9 and the housing 2, and a heat conduction mechanism 20 is installed between the stator 9 and the housing 2 at the position between the guide mechanism 10. The rotor 8 is installed inside the housing 2 at the middle position of the stator 9. Flat wire is wound around the outside of the rotor 8 and the stator 9. A central shaft 7 is installed at the center of the rotor 8, and the front end of the central shaft 7 extends out of the end cover 3. The cooling mechanism 6 consists of the refrigeration mechanism 5 and a cooling cavity 19. The cooling cavity 19 is installed on the outside of the housing 2 and is filled with heat conduction oil. The refrigeration mechanism 5 is installed around the outside of the cooling cavity 19. A constant pressure mechanism 21 is installed on the upper right side of the cooling cavity 19. A mounting base 4 is installed at the bottom of the housing 2.

[0027] Preferably, the constant pressure mechanism 21 consists of an mounting cylinder 23, a spring 22, and a sealing plate 24. The mounting cylinder 23 is installed on the upper right side of the cooling chamber 19, and the sealing plate 24 is slidably installed inside the mounting cylinder 23. The spring 22 is installed inside the mounting cylinder 23 above the sealing plate 24. When the motor 1 is running, the heat transfer oil in the cooling chamber 19 will expand or contract due to temperature changes. When the oil temperature rises and causes the heat transfer oil to expand, the pressure inside the cooling chamber 19 increases, which will push the sealing plate 24 to slide upward inside the mounting cylinder 23 and compress the spring 22, thereby providing a buffer space for the expanding heat transfer oil and preventing excessive pressure inside the chamber from damaging the structure of the cooling chamber 19. When the oil temperature drops and causes the heat transfer oil to contract, the pressure inside the chamber decreases, and the spring 22 pushes the sealing plate 24 downward under its own elastic force to make up for the space generated by the volume contraction, maintain the stability of the pressure inside the chamber, and ensure that the heat transfer oil can always fully contact the inner wall of the cooling chamber 19 and related heat transfer components, ensuring that the heat dissipation efficiency is not affected by pressure fluctuations.

[0028] Preferably, the guiding mechanism 10 consists of pins 12 and guide grooves 11. The guide grooves 11 are located around the outer periphery of the stator 9, and the pins 12 are installed around the inner periphery of the housing 2. The pins 12 are slidably installed inside the guide grooves 11. During the assembly of the motor 1, the stator 9 is initially positioned in the housing 2 by precisely embedding the pins 12 inside the housing 2 into the guide grooves 11 outside the stator 9. When the motor 1 vibrates or the temperature changes, causing slight deformation of the components, the sliding fit between the pins 12 and the guide grooves 11 can limit the displacement of the stator 9 in the radial direction, preventing uneven air gap between the stator 9 and the rotor 8 from affecting the electromagnetic performance, and also allow the stator 9 to have a small amount of expansion and contraction space in the axial direction, avoiding stress damage to the components due to thermal expansion and contraction. This structure ensures the relative positional accuracy of the stator 9 and the rotor 8, provides a stable working environment for the flat wire winding, and helps maintain the high efficiency output brought by the high slot fill factor.

[0029] Preferably, the cooling mechanism 5 consists of a cooling chamber 16 and a semiconductor cooling chip 17. The cooling chamber 16 is installed on the upper side and left and right sides of the cooling chamber 19, and the semiconductor cooling chip 17 is installed in the middle of the cooling chamber 19. As the core cooling component of the cooling system, the cooling mechanism 5 achieves active cooling through the semiconductor cooling chip 17. When the semiconductor cooling chip 17 is energized, a temperature difference is generated at its two ends. The cooling end absorbs heat, and the heating end releases heat. The semiconductor cooling chip 17 installed in the middle of the cooling chamber 19 has its cooling end directly acting on the heat transfer oil in the cooling chamber 19, quickly absorbing the heat in the heat transfer oil and reducing the oil temperature. The cooling chamber 16 provides installation space and protection for the semiconductor cooling chip 17. At the same time, the cavity structure guides the heat transfer path to ensure that the cooling efficiency of the semiconductor cooling chip 17 is maximized, thereby enhancing the heat dissipation capacity of the entire motor 1 and enabling the motor 1 to maintain a suitable operating temperature when running under high load.

[0030] Preferably, a first heat-conducting plate 15 is installed on the outside of the cooling cavity 16. The first heat-conducting plate 15 extends out of the cooling cavity 16 and extends into the cooling cavity 16 to contact the heating end of the semiconductor refrigeration chip 17. The first heat-conducting plate 15 serves as a heat dissipation medium for the heating end of the semiconductor refrigeration chip 17. Its inner side is in close contact with the heating end of the semiconductor refrigeration chip 17, which can efficiently absorb the heat generated by the heating end. Since the first heat-conducting plate 15 extends out of the cooling cavity 16, the absorbed heat can be directly dissipated to the external environment, avoiding the accumulation of heat at the heating end in the cooling cavity 16 and preventing a decrease in cooling efficiency. This structural design ensures that the temperature difference between the two ends of the semiconductor refrigeration chip 17 is maintained within a reasonable range, ensuring its continuous and stable cooling effect, thereby providing continuous cooling capacity for the heat-conducting oil in the cooling cavity 19.

[0031] Preferably, a second heat-conducting plate 18 is installed inside the cooling chamber 16. The outer side of the second heat-conducting plate 18 extends into the cooling chamber 16 and contacts the cooling end of the semiconductor refrigeration chip 17. The inner side of the second heat-conducting plate 18 extends into the cooling chamber 19. The second heat-conducting plate 18 acts as a bridge connecting the cooling end of the semiconductor refrigeration chip 17 and the cooling chamber 19. Its outer side is in close contact with the cooling end of the semiconductor refrigeration chip 17, which can quickly absorb the cold energy generated by the cooling end. The cold energy is transferred to the heat-conducting oil in the cooling chamber 19 through the inner part that extends into the cooling chamber 19. The design of the second heat-conducting plate 18 increases the contact area between the cooling end and the heat-conducting oil, so that the cold energy can be diffused more evenly and efficiently into the entire heat-conducting oil, accelerating the cooling speed of the heat-conducting oil, thereby improving the heat dissipation efficiency of the motor 1 and ensuring the temperature stability of the motor 1 under high slot full rate operation.

[0032] Preferably, the heat conduction mechanism 20 consists of a third heat conduction plate 13 and a mounting groove 14. The mounting groove 14 is located around the outside of the stator 9, and the third heat conduction plate 13 is installed inside the housing 2. The third heat conduction plate 13 is embedded inside the mounting groove 14 in the inner section of the housing 2. The heat conduction mechanism 20 is a key channel for heat transfer inside the motor 1. During operation, the stator 9 generates a large amount of heat due to electromagnetic induction. This heat is transferred to the third heat conduction plate 13 embedded in it through the mounting groove 14 on the outside of the stator 9. The third heat conduction plate 13 is connected to the inside of the housing 2 and can quickly conduct the absorbed heat to the housing 2, and then the housing 2 transfers it to the cooling cavity 19 for heat dissipation. The design of the mounting groove 14 ensures close contact between the third heat conduction plate 13 and the stator 9, increases the heat transfer area, reduces thermal resistance, and enables the heat generated by the stator 9 to be efficiently discharged, avoiding the impact of excessive temperature on the insulation performance and service life of the stator 9. At the same time, it also provides good heat dissipation conditions for the flat wire winding, ensuring that the high slot fill factor performance of the motor 1 can be fully utilized.

[0033] Work steps

[0034] As a high slot fill factor industrial flat wire motor, its core operation relies on the electromagnetic induction between the stator 9 and the rotor 8. When current passes through the flat wire wound around the outside of the stator 9 and the rotor 8, the high space utilization of the flat wire allows for a higher winding density within a limited slot, thereby generating a stronger electromagnetic torque that drives the rotor 8 to rotate around the central axis 7. The guide mechanism 10 ensures the precise positioning of the stator 9 within the housing 2, preventing relative displacement between the stator 9 and the housing 2 due to vibration during operation, thus ensuring the stability of the electromagnetic coupling. The heat conduction mechanism 20 efficiently transfers the heat generated by the stator 9 during operation to the housing 2, and then to the cooling chamber 19 through the housing 2. The heat-conducting oil in the cooling chamber 19 acts as a heat transfer medium, uniformly absorbing the heat transferred from the housing 2. Combined with the surrounding cooling mechanism 5, it quickly reduces the oil temperature, achieving efficient heat dissipation for the entire motor. The constant pressure mechanism 21 balances the pressure fluctuations in the cooling chamber 19 caused by temperature changes, ensuring stable operation of the heat dissipation system. The mounting base 4 provides stable support for the entire motor, reducing vibration transmission during operation.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high slot fill factor industrial flat wire motor, comprising a motor (1); characterized in that: The motor (1) consists of a housing (2), an end cover (3), a rotor (8), a stator (9), a cooling mechanism (6), and a refrigeration mechanism (5). The end cover (3) is installed at the front end of the housing (2), the stator (9) is installed inside the housing (2), a guide mechanism (10) is installed between the stator (9) and the housing (2), and a heat conduction mechanism (20) is installed between the stator (9) and the housing (2) at the position between the guide mechanism (10). The rotor (8) is installed inside the housing (2) at the middle position of the stator (9). 8) and the stator (9) are wound with flat wires. A central shaft (7) is installed at the center of the rotor (8). The front end of the central shaft (7) extends out of the end cover (3). The cooling mechanism (6) consists of a refrigeration mechanism (5) and a cooling chamber (19). The cooling chamber (19) is installed on the outside of the outer shell (2). The cooling chamber (19) is filled with heat transfer oil. The refrigeration mechanism (5) is installed around the outside of the cooling chamber (19). A constant pressure mechanism (21) is installed on the upper right side of the cooling chamber (19). The bottom of the outer shell (2) is installed with a mounting base (4).

2. The high slot fill factor industrial flat wire motor according to claim 1, characterized in that, The constant pressure mechanism (21) consists of a mounting cylinder (23), a spring (22) and a sealing plate (24). The mounting cylinder (23) is installed on the upper right side of the cooling chamber (19). The sealing plate (24) is slidably installed inside the mounting cylinder (23). The spring (22) is installed inside the mounting cylinder (23) on the upper side of the sealing plate (24).

3. The high slot fill factor industrial flat wire motor according to claim 1, characterized in that, The guiding mechanism (10) consists of a pin (12) and a guide groove (11). The guide groove (11) is located around the outside of the stator (9). The pin (12) is installed around the inside of the outer casing (2). The pin (12) is slidably installed inside the guide groove (11).

4. The high slot fill factor industrial flat wire motor according to claim 1, characterized in that, The refrigeration mechanism (5) consists of a refrigeration chamber (16) and a semiconductor refrigeration chip (17). The refrigeration chamber (16) is installed on the upper side and the left and right sides of the cooling chamber (19), and the semiconductor refrigeration chip (17) is installed in the middle of the cooling chamber (19).

5. A high slot fill factor industrial flat wire motor according to claim 4, characterized in that, A first heat-conducting plate (15) is installed on the outside of the cooling cavity (16). The first heat-conducting plate (15) extends out of the cooling cavity (16) and extends into the cooling cavity (16) to contact the heating end of the semiconductor cooling chip (17).

6. A high slot fill factor industrial flat wire motor according to claim 5, characterized in that, A second heat-conducting plate (18) is installed inside the cooling cavity (16). The outer side of the second heat-conducting plate (18) extends into the cooling cavity (16) and contacts the cooling end of the semiconductor cooling chip (17). The inner side of the second heat-conducting plate (18) extends into the cooling cavity (19).

7. A high slot fill factor industrial flat wire motor according to claim 6, characterized in that, The heat conduction mechanism (20) consists of a third heat conduction plate (13) and a mounting groove (14). The mounting groove (14) is located around the outside of the stator (9). The third heat conduction plate (13) is installed inside the outer shell (2). The third heat conduction plate (13) is located inside the outer shell (2) and embedded in the mounting groove (14).

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