A permanent magnet motor with cooling structure

Abstract

The present invention is applicable to the field of motor equipment, and provides a permanent magnet motor with a cooling structure, including a casing, a folding box mechanism is provided at the bottom of the casing; a rotor is rotatably provided inside the casing, a stator matching the rotor is provided on the inner side wall of the casing, and a closed shaft hole matching the rotor is provided at the front and rear ends of the casing; a heat transfer component is provided on the casing. When the present invention is in use, the first bevel gear at the end of the rotor will simultaneously drive the two steering bevel gears on the left and right to rotate, and the driven bevel gear will rotate synchronously with the steering bevel gear, and the driven bevel gear will drive the second bevel gear and the impeller to operate, and the rotating airflow will flow in the gap between the inner fins and transfer the air heat to the inner fins and the casing, and the outer fins outside the casing will dissipate the heat through the heat dissipation fan. The air outside the casing of the present invention cannot enter the inside of the casing to achieve the purpose of heat dissipation, thereby realizing the function of dust-free heat dissipation.

Description

Technical Field

[0001] The invention belongs to the field of motor equipment, and in particular relates to a permanent magnet motor with a cooling structure. Background Art

[0002] With the development of industrial technology, modern motor equipment technology is becoming more and more perfect. Motor equipment will gather a lot of heat when working. If this heat is not dissipated in time, it will affect the normal operation of the motor. The previous motor heat dissipation method is to dissipate heat through air cooling. The previous air cooling heat dissipation structure will carry a lot of dust on the parts after working for a long time, which affects the normal operation of the equipment.

[0003] Patent announcement number CN102790501B discloses a solid rotor permanent magnet motor with a cooling structure, including a stator, a rotor, a hollow conductor bar, a hollow end ring and a permanent magnet; the permanent magnet is arranged inside the rotor, and the stator and the rotor are assembled together in a matching manner; rotor slots are arranged on the surface of the rotor, and the hollow conductor bars are arranged in a matching manner in the rotor slots; the two ends of the hollow conductor bars are connected together through hollow end rings respectively, and are interconnected; coolant is arranged inside the hollow end rings and the hollow conductor bars; the hollow cavity inside the hollow conductor bar is provided with an inclination angle of 2-3 degrees from the two ends of the hollow conductor bar to the center of the hollow conductor bar. The present invention adopts a hollow conductor bar and a hollow end ring structure with built-in coolant, and the heat of the motor rotor can be taken away through the circulation of the coolant, thereby effectively reducing the temperature rise of the rotor, reducing the average temperature of the motor, and increasing the service life of the permanent magnet;

[0004] The device still has defects when in use. First, the ventilation and heat dissipation structure of the device uses air circulation inside and outside the motor to exchange heat, but the external air will be mixed with dust and retained inside. Second, there is no protective mechanism on the outside of the device, so the motor equipment is easily bumped or even damaged during transportation. Summary of the invention

[0005] The purpose of the present invention is to provide a permanent magnet motor with a cooling structure in view of the deficiencies in the prior art. When the device is in use, the rotor is rotating, and the first bevel gear at the end of the rotor will simultaneously drive the two left and right steering bevel gears to rotate, and the driven bevel gear will rotate synchronously with the steering bevel gear, and the driven bevel gear will drive the second bevel gear and the impeller to operate. The front and rear sets of impellers will form a rotating airflow inside the casing. The rotating airflow flows in the gap between the inner fins and transfers the air heat to the inner fins and the casing. The outer fins on the outside of the casing dissipate the heat through the heat dissipation fan. The air outside the casing of the present invention cannot enter the inside of the casing, so the heat dissipation purpose can be achieved. Furthermore, after the present invention has been working for a long time, no dust will accumulate inside the motor, thereby solving the problems mentioned in the background technology.

[0006] To solve the above problems, the present invention provides the following technical solutions: a permanent magnet motor with a cooling structure, comprising a casing, a folding box mechanism is arranged at the bottom of the casing; a rotor is rotatably arranged inside the casing, a stator matching the rotor is arranged on the inner side wall of the casing, and a closed shaft hole matching the rotor is arranged at the front and rear ends of the casing; a heat transfer component is arranged on the casing, the heat transfer component comprises a heat exchange component and a heat dissipation component, the heat exchange component comprises inner fins on the inner side walls at the front and rear ends of the casing, an assembly groove is also arranged on the inner side wall of the casing, an impeller is installed inside the assembly groove, the wind direction of the impeller is parallel to the ventilation gap of the inner fin, the impeller is connected to the linkage mechanism, the folding box mechanism comprises an outer frame, one side of the outer frame is provided with A movable plate is provided, and two groups of torsion guide rods are provided on the inner side walls of the outer frame and the movable plate, the outer ends of the torsion guide rods are respectively rotatably connected with the inner side walls of the outer frame and the movable plate, a support frame is provided on the outer side wall of the casing, and the inner ends of the torsion guide rods are respectively rotatably connected with the side walls of the support frame, the linkage mechanism includes a first bevel gear on the rotor shaft, a second bevel gear is provided on the axis of the impeller, steering bevel gears are provided on the left and right sides of the first bevel gear, the steering bevel gears are respectively meshed with the first bevel gear, a driven bevel gear is provided on one side of the second bevel gear, the driven bevel gear and the second bevel gear are meshed with each other, a linkage shaft is provided between the steering bevel gear and the driven bevel gear, and the linkage shaft is axially connected through the rocker and the inner side wall of the casing.

[0007] Furthermore, the movable plate includes a movable frame on one side of the outer frame, and the bottom of the movable frame is fixedly plugged with the outer frame through a pin rod.

[0008] Furthermore, the heat dissipation assembly includes external fins on the outer side wall of the casing, and a heat dissipation fan is arranged on the side wall of the external fins.

[0009] Furthermore, the heat transfer component includes two heat exchange coils inside the casing, the right ports of the two heat exchange coils are connected by a series pipe, and the left ports of the two heat exchange coils are respectively connected to the cantilever steel pipes, the cantilever steel pipes pass through the side wall of the casing and extend to the rear of the casing, a circulation pump is arranged on the circulation pipeline of the cantilever steel pipe, and spiral fins are also arranged on the side wall of the heat exchange coil, and a heat dissipation mechanism is arranged below the circulation pump.

[0010] Furthermore, the heat dissipation mechanism includes a heat dissipation wheel at the tail end of the rotor, and a heat dissipation box is also provided on the pipeline of the cantilever beam steel pipe. The heat dissipation wheel faces the plane of the heat dissipation box, and the heat dissipation box is provided with a plurality of ventilation holes in a rectangular array.

[0011] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0012] Firstly, when the device is in use, the rotor is rotating, and the first bevel gear at the end of the rotor will simultaneously drive the two left and right steering bevel gears to rotate, and the driven bevel gear will rotate synchronously with the steering bevel gear, and the driven bevel gear will drive the second bevel gear and the impeller to operate, and the front and rear two groups of impellers will form a rotating airflow inside the casing, and the rotating airflow flows in the gap between the inner fins and transfers the air heat to the inner fins and the casing, and the outer fins outside the casing dissipate the heat through the heat dissipation fan. The air outside the casing of the present invention cannot enter the inside of the casing, so the heat dissipation purpose can be achieved, and further, after the present invention works for a long time, no dust will accumulate inside the motor.

[0013] Secondly, when the motor device is transported, the pins of the movable frame are pulled out, and then the motor device can fall into the inner part of the outer frame and the movable frame, and the movable frame is pushed to the original position and the pins are inserted back, and then the outer frame and the movable frame form a protective box for the motor, which is convenient for transportation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front view of the present invention.

[0015] Figure 2 It is a schematic diagram of a side view of the present invention.

[0016] Figure 3 It is a schematic diagram of a cross-section of the present invention.

[0017] Figure 4 Schematic diagram of the rotor of the present invention.

[0018] Figure 5 Schematic diagram of the stator of the present invention.

[0019] Figure 6 Schematic diagram of the first bevel gear of the present invention.

[0020] Figure 7 Schematic diagram of the impeller of the present invention.

[0021] Figure 8 FIG. 1 is a schematic diagram of a second embodiment of the present invention.

[0022] Fig. 9 Schematic diagram of the heat dissipation box of the present invention.

[0023] Fig.10 Schematic diagram of the heat exchange coil of the present invention.

[0024] Fig.11 It is a schematic diagram of the series tubes of the present invention.

[0025] Description of reference numerals:

[0026] Casing 1, outer fins 101, heat dissipation fan 102, support frame 103, stator 104, inner fins 105, assembly groove 106, outer frame 2, movable frame 201, torsion guide rod 202, rotor 3, first bevel gear 301, impeller 302, steering bevel gear 303, driven bevel gear 304, second bevel gear 305, cantilever steel pipe 4, circulation pump 401, heat dissipation box 5, heat dissipation wheel 501, heat exchange coil 6, series pipe 601, spiral fin 602. DETAILED DESCRIPTION

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] The present invention provides a permanent magnet motor with a cooling structure, such as Figure 1-11 As shown, it includes a casing 1, a folding box mechanism is arranged at the bottom of the casing 1; a rotor 3 is rotatably arranged inside the casing 1, a stator 104 matching the rotor 3 is arranged on the inner wall of the casing 1, and closed shaft holes matching the rotor 3 are arranged at the front and rear ends of the casing 1; a heat transfer component is arranged on the casing 1.

[0030] In this embodiment, the casing 1 of the present invention has no internal and external airflow, and the heat transfer component provides heat to the hot zone of the casing 1, so that the casing 1 device can conduct heat without ventilation, which can prevent dust in the airflow from accumulating inside the motor and improve the service life of the internal parts of the motor.

[0031] The heat transfer component includes a heat exchange component and a heat dissipation component. The heat exchange component includes inner fins 105 on the inner side walls of the front and rear ends of the casing 1. An assembly groove 106 is also provided on the inner side wall of the casing 1. An impeller 302 is installed inside the assembly groove 106. The wind direction of the impeller 302 is parallel to the ventilation gap of the inner fin 105. The impeller 302 is connected to the linkage mechanism.

[0032] The two impellers 302 run simultaneously, and then the impellers 302 drive the air inside the casing 1 to form an annular airflow. The annular airflow flows in the gap between the inner fins 105 to transfer the air heat to the inner fins 105 and the casing 1, achieving the effect of efficient heat transfer, avoiding the inflow of external air, and thus preventing external dust from being deposited on the internal parts of the motor.

[0033] In a further embodiment of the present invention, Figure 1-2 As shown, the folding box mechanism includes an outer frame 2, a movable plate is arranged on one side of the outer frame 2, two groups of torsion guide rods 202 are arranged on the inner side walls of the outer frame 2 and the movable plate, the outer ends of the torsion guide rods 202 are respectively rotatably connected to the inner side walls of the outer frame 2 and the movable plate, a support frame 103 is arranged on the outer side wall of the casing 1, and the inner ends of the torsion guide rods 202 are respectively rotatably connected to the side walls of the support frame 103.

[0034] In this embodiment, after the movable plate moves away from the outer frame 2 for a distance, the torsion guide rod 202 will twist downward and let the casing 1 sink. At this time, the movable plate will be reset again, and the casing 1 will fall into the outer frame 2 and the movable plate, and then the outer frame 2 and the movable plate will form a protective box for the motor equipment. Compared with the motor transportation in the prior art, the previous motors are easily scratched or collided during transportation, which may cause the motor to malfunction. The outer frame 2 of the present invention facilitates the staff to carry the equipment.

[0035] In a further embodiment of the present invention, Figure 3-7 As shown, the linkage mechanism includes a first bevel gear 301 on the shaft of the rotor 3, a second bevel gear 305 is arranged on the axis of the impeller 302, steering bevel gears 303 are arranged on the left and right sides of the first bevel gear 301, and the steering bevel gears 303 are respectively meshed with the first bevel gear 301, and a driven bevel gear 304 is arranged on one side of the second bevel gear 305, and the driven bevel gear 304 and the second bevel gear 305 are meshed with each other, and a linkage shaft is arranged between the steering bevel gear 303 and the driven bevel gear 304, and the linkage shaft is axially connected through a rocker and the inner wall of the casing 1.

[0036] In this embodiment, when the rotor 3 is rotating, the first bevel gear 301 at the end of the rotor 3 will simultaneously drive the two left and right steering bevel gears 303 to rotate, and the driven bevel gear 304 will rotate synchronously with the steering bevel gear 303, and the driven bevel gear 304 will drive the second bevel gear 305 and the impeller 302 to operate, achieving a linkage effect.

[0037] In a further embodiment of the present invention, Figure 1-2 As shown, the movable plate includes a movable frame 201 on one side of the outer frame 2, and the bottom of the movable frame 201 is fixedly plugged with the outer frame 2 through a pin rod.

[0038] In this embodiment, the pins of the movable frame 201 are pulled out, and then the motor device can fall into the interior of the outer frame 2 and the movable frame 201, and the movable frame 201 is pushed to the original position and the pins are inserted back.

[0039] In a further embodiment of the present invention, Figure 3-7 As shown, the heat dissipation assembly includes an external fin 101 on the outer side wall of the housing 1 , and a heat dissipation fan 102 is arranged on the side wall of the external fin 101 .

[0040] In this embodiment, the outer fins 101 on the outer side of the housing 1 dissipate heat through the heat dissipation fan 102, thereby achieving an efficient heat exchange effect.

[0041] In a further embodiment of the present invention, Figure 8-11 As shown, the heat transfer component includes two heat exchange coils 6 inside the casing 1, the right ports of the two heat exchange coils 6 are connected by a series pipe 601, and the left ports of the two heat exchange coils 6 are respectively connected to the cantilever steel pipe 4, the cantilever steel pipe 4 passes through the side wall of the casing 1 and extends to the rear of the casing 1, a circulation pump 401 is arranged on the circulation pipeline of the cantilever steel pipe 4, and spiral fins 602 are also arranged on the side wall of the heat exchange coil 6, and a heat dissipation mechanism is arranged below the circulation pump 401.

[0042] In this embodiment, the heat generated inside the casing 1 is transferred to the internal coolant through the spiral fins 602 and the heat exchange coil 6, and the circulating pump 401 drives the coolant along the cantilever steel pipe 4 to the outside of the motor for heat dissipation.

[0043] In a further embodiment of the present invention, Figure 8-11 As shown, the heat dissipation mechanism includes a heat dissipation wheel 501 at the tail end of the rotor 3, and a heat dissipation box 5 is also arranged on the pipeline of the cantilever steel pipe 4. The heat dissipation wheel 501 faces the plane of the heat dissipation box 5, and the heat dissipation box 5 is provided with a plurality of ventilation holes in a rectangular array.

[0044] In this embodiment, when the coolant is transported to the inside of the heat dissipation box 5, the heat dissipation wheel 501 at the rear end of the rotor 3 drives the air flow to pass through the ventilation holes to disperse the coolant.

[0045] Working principle: the casing 1 of the present invention has no internal and external airflow operation, and the heat transfer component gives heat to the hot zone of the casing 1, so that the casing 1 device can conduct heat without ventilation, which can prevent dust in the airflow from accumulating inside the motor, thereby improving the service life of the internal parts of the motor. After the movable plate moves away from the outer frame 2 for a distance, the torsion guide rod 202 will twist downward and let the casing 1 sink. At this time, the movable plate is reset again, and the casing 1 will fall into the outer frame 2 and the movable plate, and then the outer frame 2 and the movable plate form a protective box for the motor equipment. Compared with the motor transportation of the prior art, the previous motors are easily scratched or collided during transportation, which may cause the motor to malfunction. The outer frame 2 of the present invention is convenient for the staff to carry the equipment, pull out the pin of the movable frame 201, and then the motor device can fall into the outer frame 2 and the movable frame 201, and push the movable frame 201 to its original position and then insert the pin back. The two impellers 302 operate at the same time, and then the impeller 302 drives the air inside the casing 1 to form a circular airflow , the annular airflow flows in the gap between the inner fins 105 to transfer the air heat to the inner fins 105 and the casing 1, achieving the effect of efficient heat transfer, avoiding the inflow of external air, and thus preventing external dust from being deposited on the internal parts of the motor. During the rotation of the rotor 3, the first bevel gear 301 at the end of the rotor 3 will simultaneously drive the two left and right steering bevel gears 303 to rotate, and the driven bevel gear 304 will rotate synchronously with the steering bevel gear 303, and the driven bevel gear 304 will drive the second bevel gear 305 and the impeller 302 to operate, achieving the effect of linkage, and the outer fins 101 on the outside of the casing 1 dissipate the heat through the heat dissipation fan 102, achieving the effect of efficient heat exchange, and the heat generated inside the casing 1 is transferred to the internal coolant through the spiral fins 602 and the heat exchange coil 6, and the circulating pump 401 drives the coolant to be transmitted along the cantilever steel pipe 4 to the outside of the motor for heat dissipation. When the coolant is transported to the inside of the heat dissipation box 5, the heat dissipation wheel 501 at the tail end of the rotor 3 drives the airflow to pass through the ventilation holes and then dissipate the coolant.

[0046] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0047] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0048] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A permanent magnet motor with a cooling structure, characterized in that: It comprises a casing (1), wherein a folding box mechanism is provided at the bottom of the casing (1); A rotor (3) is rotatably arranged inside the casing (1), a stator (104) matching the rotor (3) is arranged on the inner wall of the casing (1), and closed shaft holes matching the rotor (3) are arranged at the front and rear ends of the casing (1); The casing (1) is provided with a heat transfer component, the heat transfer component comprising a heat exchange component and a heat dissipation component, the heat exchange component comprising inner fins (105) on the inner side walls at the front and rear ends of the casing (1), the inner side wall of the casing (1) is also provided with an assembly groove (106), an impeller (302) is installed inside the assembly groove (106), the wind direction of the impeller (302) is parallel to the ventilation gap of the inner fin (105), and the impeller (302) is connected to the linkage mechanism; The folding box mechanism comprises an outer frame (2), a movable plate is arranged on one side of the outer frame (2), two groups of torsion guide rods (202) are arranged on the inner side walls of the outer frame (2) and the movable plate, the outer ends of the torsion guide rods (202) are respectively rotatably connected to the inner side walls of the outer frame (2) and the movable plate, a support frame (103) is arranged on the outer side wall of the housing (1), and the inner ends of the torsion guide rods (202) are respectively rotatably connected to the side walls of the support frame (103); The linkage mechanism comprises a first bevel gear (301) on the shaft of the rotor (3); a second bevel gear (305) is arranged on the axis of the impeller (302); steering bevel gears (303) are arranged on both the left and right sides of the first bevel gear (301); the steering bevel gears (303) are respectively meshed with the first bevel gear (301); a driven bevel gear (304) is arranged on one side of the second bevel gear (305); the driven bevel gear (304) and the second bevel gear (305) are meshed with each other; a linkage shaft is arranged between the steering bevel gear (303) and the driven bevel gear (304); the linkage shaft is axially connected to the inner wall of the casing (1) through a rocker plate.

2. A permanent magnet motor with a cooling structure according to claim 1, characterized in that: The movable plate comprises a movable frame (201) on one side of the outer frame (2), and the bottom of the movable frame (201) is fixedly plugged into the outer frame (2) via a pin rod.

3. The permanent magnet motor with cooling structure according to claim 1, characterized in that: The heat dissipation component comprises an external fin (101) on the outer side wall of the casing (1), and a heat dissipation fan (102) is arranged on the side wall of the external fin (101).

4. A permanent magnet motor with a cooling structure according to claim 1, characterized in that: The heat transfer component comprises two heat exchange coils (6) inside the casing (1), the right ports of the two heat exchange coils (6) being connected via a series pipe (601), and the left ports of the two heat exchange coils (6) being respectively connected to a cantilever steel pipe (4), the cantilever steel pipe (4) passing through the side wall of the casing (1) and extending to the rear of the casing (1), a circulation pump (401) being arranged on the circulation pipeline of the cantilever steel pipe (4), a spiral fin (602) being further arranged on the side wall of the heat exchange coil (6), and a heat dissipation mechanism being arranged below the circulation pump (401).

5. A permanent magnet motor with a cooling structure according to claim 4, characterized in that: The heat dissipation mechanism comprises a heat dissipation wheel (501) at the rear end of the rotor (3); a heat dissipation box (5) is further provided on the pipeline of the cantilever steel pipe (4); the heat dissipation wheel (501) faces the plane of the heat dissipation box (5); and a plurality of ventilation holes in a rectangular array are provided on the heat dissipation box (5).

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