Highly integrated single-phase doubly salient permanent magnet motor

Abstract

The utility model discloses a highly integrated single-phase doubly salient permanent magnet motor, and belongs to the technical field of doubly salient motors. A radial stator mainly comprises an outer shell and an inner shell, a first partition plate and a second partition plate are fixedly connected to gaps between the outer shell and the inner shell respectively, notches are formed in the ends of the first partition plate and the second partition plate, a water channel is formed between the first partition plate and the second partition plate, and heat conduction fins are integrally formed on the side wall of the water channel and the side wall of the inner shell respectively. The radial stator is designed into the outer shell and the inner shell, the heat dissipation cavity is formed in the outer shell, the staggered notches are formed between the outer shell and the inner shell, the cooling water tank capable of allowing cooling liquid to flow is formed, and the multiple heat dissipation fins are arranged on the side wall of the inner shell in the water channel, so that the contact area with the cooling liquid is increased, and the cooling effect is improved. Therefore, heat caused by long-time work of the motor in the inner shell can be taken away as much as possible, and the phenomenon that the motor is overheated and demagnetized after long-time use is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of double-salient-pole motors, and specifically to a highly integrated single-phase double-salient-pole permanent magnet motor. Background Art

[0002] The doubly salient pole motor is a new type of motor with high power density and high torque density. Its basic structure consists of two parts: the stator and the rotor. Due to the salient pole effect of the rotor, the doubly salient pole motor has incomparable advantages over traditional single-phase motors, such as stepless speed regulation, small torque fluctuation, and high torque density.

[0003] After searching, the announcement number is CN105680649B, which discloses an axial radial flux double salient pole permanent magnet motor, including a lower axial rotor, a permanent magnet ring, a lower axial stator, an upper axial stator, a radial rotor, a radial stator, an upper axial rotor and a rotating shaft; the radial rotor is arranged in the radial stator, and the permanent magnet ring is surrounded and embedded in the radial stator; the rotating shaft passes through the upper axial stator, the upper axial rotor, the radial rotor, the lower axial rotor and the lower axial stator in sequence, and the upper axial rotor, the radial rotor and the lower axial rotor are fixedly mounted on the rotating shaft; the upper axial stator and the lower axial stator are respectively fixedly mounted on the upper and lower end surfaces of the radial stator, and the upper and lower ends of the rotating shaft are respectively rotatably mounted on the upper axial stator and the lower axial stator. The motor of the invention forms a group of radial flux and two groups of axial flux inside, combining the advantages of axial flux motor and double salient pole motor, with small armature reaction, small moment of inertia, large starting torque, small starting current, large output, and enhanced operation safety.

[0004] However, although the permanent magnets of the double-salient permanent magnet motor are arranged on the stator to dissipate heat faster and can effectively solve the technical problem of overheating and demagnetization, when the double-salient permanent magnet motor is in a working state for a long time, the temperature will continue to rise due to the internal heat accumulation that cannot be dissipated in time, which will affect the working efficiency.

[0005] Therefore, it is necessary to provide a highly integrated single-phase double-salient pole permanent magnet motor to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Utility Model Content

[0007] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a highly integrated single-phase double-salient pole permanent magnet motor to solve the problem of unsatisfactory heat dissipation effect.

[0008] The technical solution adopted by this application to solve its technical problem is:

[0009] A highly integrated single-phase double-salient-pole permanent magnet motor comprises a radial stator, wherein radial stator electric salient poles are arranged inside the radial stator, an armature winding is wound at the gap between the radial stator electric salient poles and the radial stator, an upper axial stator is arranged on the top surface of the radial stator, a rotating shaft is rotatably connected inside the upper axial stator, the radial stator comprises an outer shell and an inner shell, a first partition plate and a second partition plate are respectively fixedly connected at the gap between the outer shell and the inner shell, a notch is provided at the ends of the first partition plate and the second partition plate, and a water channel is formed between the first partition plate and the second partition plate;

[0010] The side walls of the water channel are respectively integrally formed with the side walls of the inner shell with heat conducting fins, the heat conducting fins are arranged in the water channel at equal intervals, and the radius of the heat conducting fins is smaller than the radius of the first partition plate and the second partition plate;

[0011] Heat dissipation cavities are respectively provided inside the shell along a circle of the shell.

[0012] Preferably, the side walls of the shell are respectively provided with a water inlet joint and a water outlet joint, and the side walls of the shell are respectively provided with two screw holes, and the two screw holes are connected with the water channel; the water inlet joint and the water outlet joint are respectively connected with the internal threads of the two screw holes.

[0013] Preferably, an isolation plate is sealed and connected to the gap between the outer shell and the inner shell between the two screw holes.

[0014] Preferably, the notch on the first partition is opened at the bottom, and the notch on the second partition is opened at the top.

[0015] Preferably, the plurality of water channels and the plurality of slots together form a cooling water trough which reciprocates up and down.

[0016] Preferably, the outer wall of the shell is integrally formed with heat dissipation fins.

[0017] The beneficial effects of the present application are as follows: a radial stator is designed as an outer shell and an inner shell structure, a heat dissipation cavity is opened inside the outer shell, and a displaced slot is set between the outer shell and the inner shell to form a cooling water tank for the flow of coolant, and a plurality of heat dissipation fins are provided on the side wall of the inner shell in the water channel, thereby increasing the contact area with the coolant, so as to be able to take away as much heat as possible in the inner shell caused by the long-term operation of the motor, so as to prevent the motor from overheating and demagnetization due to long-term use.

[0018] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 A schematic diagram of an axial radial flux double salient pole permanent magnet motor is disclosed in the background technology;

[0021] Figure 2 for Figure 1 A schematic diagram of the overall structure of a highly integrated single-phase double-salient-pole permanent magnet motor in the application;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the mid-radial stator from top view;

[0023] Figure 4 for Figure 3 Schematic diagram of the structure of the middle inner shell, the first partition, the second partition and the heat-conducting fins.

[0024] Among them, the reference numerals in the figure are:

[0025] 1. Radial stator; 11. Outer shell; 12. Inner shell; 13. First partition; 14. Second partition; 15. Water channel; 16. Heat-conducting fins; 17. Heat-dissipating cavity; 18. Slot; 19. Isolation plate; 2. Heat-dissipating fins; 3. Water inlet joint; 4. Water outlet joint; 5. Radial stator electric salient pole; 6. Upper axial stator; 7. Rotating shaft; 8. Armature winding. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0028] See also Figure 1-4 , the utility model provides embodiments:

[0029] like Figure 1As shown, a highly integrated single-phase double-salient pole permanent magnet motor includes a radial stator 1, a radial stator electric pole 5 is installed inside the radial stator 1, an armature winding 8 is wound in the gap between the radial stator electric pole 5 and the radial stator 1, an upper axial stator 6 is installed on the top surface of the radial stator 1, and a rotating shaft 7 is connected to the interior of the upper axial stator 6 for rotation. The structure is basically the same as the axial-radial magnetic flux double-salient pole permanent magnet motor mentioned in the background technology, and its structural principle will not be elaborated here.

[0030] like Figure 2-4 As shown, the radial stator 1 includes an outer shell 11 and an inner shell 12, and a heat dissipation fin 2 is integrally formed on the outer wall of the outer shell 11. A first partition 13 and a second partition 14 are fixedly connected to the gap between the outer shell 11 and the inner shell 12, respectively. A slot 18 is provided at the ends of the first partition 13 and the second partition 14, and a water channel 15 is formed between the first partition 13 and the second partition 14. The slot 18 on the first partition 13 is opened at the bottom, and the slot 18 on the second partition 14 is opened at the top. Multiple water channels 15 and multiple slots 18 together constitute a cooling water trough that reciprocates up and down, so that cooling water can flow back and forth up and down inside the radial stator 1 through the constructed cooling water trough, thereby absorbing heat in the inner shell 12.

[0031] In this process, the side walls of the water channel 15 are respectively integrally formed with heat-conducting fins 16 with the side walls of the inner shell 12. The heat-conducting fins 16 are arranged in the water channel 15 at equal intervals, and the radius of the heat-conducting fins 16 is smaller than the radius of the first partition 13 and the second partition 14. By adding heat-conducting fins 16 in the water channel 15, the heat in the inner shell 12 can be transferred to the cooling water tank in a three-dimensional manner through the heat-conducting fins 16, and when the cooling water passes through the surface of each heat-conducting fin 16, it can take away the heat on the heat-conducting fin 16, thereby quickly absorbing the heat in the inner shell 12.

[0032] Furthermore, heat dissipation cavities 17 are respectively opened inside the shell 11 along a circle of the shell 11. When the heat passing through the cooling water tank is transferred to the shell 11 through the heat dissipation cavity 17, it can pass through the heat dissipation cavity 17 inside the shell 11 and can cooperate with the airflow to further perform heat dissipation processing.

[0033] The side wall of the outer shell 11 is respectively provided with a water inlet joint 3 and a water outlet joint 4. The side wall of the outer shell 11 is respectively provided with two screw holes, and the two screw holes are connected to the water channel 15. The water inlet joint 3 and the water outlet joint 4 are respectively connected to the inner threads of the two screw holes. The gap between the outer shell 11 and the inner shell 12 between the two screw holes is sealed with an isolation plate 19.

[0034] Specifically, the water inlet connector 3 and the water outlet connector 4 are threadedly installed in the screw holes, and the coolant is introduced into the water inlet channel 15 through the water inlet connector 3, so that the coolant below the isolation plate 19 flows into the water channel 15 between the first partition 13 and the second partition 14 through the groove 18 at the bottom of the second partition 14 as it increases, and then flows into another water channel 15 again through the groove 18 on the top of the first partition 13. In this way, the coolant flows up and down in the water channel 15 until the cooling water tank is filled, and then discharged from the water outlet connector 4. In this process, a large amount of heat is taken away through each heat dissipation fin 2 and the surface of the inner shell 12, thereby reducing the heat generated by the rotation of the rotor in the inner shell 12.

[0035] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A highly integrated single-phase double-salient-pole permanent magnet motor, comprising a radial stator (1), wherein a radial stator electric salient pole (5) is installed inside the radial stator (1), an armature winding (8) is wound in the gap between the radial stator electric salient pole (5) and the radial stator (1), an upper axial stator (6) is installed on the top surface of the radial stator (1), and a rotating shaft (7) is rotatably connected inside the upper axial stator (6), characterized in that: The radial stator (1) comprises an outer shell (11) and an inner shell (12); a first partition plate (13) and a second partition plate (14) are respectively fixedly connected at a gap between the outer shell (11) and the inner shell (12); ends of the first partition plate (13) and the second partition plate (14) are provided with a notch (18); a water channel (15) is formed between the first partition plate (13) and the second partition plate (14); The side walls of the water channel (15) are respectively integrally formed with the side walls of the inner shell (12) to form heat-conducting fins (16); the heat-conducting fins (16) are arranged in the water channel (15) at equal intervals, and the radius of the heat-conducting fins (16) is smaller than the radius of the first partition plate (13) and the second partition plate (14); Heat dissipation cavities (17) are respectively provided inside the outer shell (11) along a circle of the outer shell (11).

2. A highly integrated single-phase double-salient permanent magnet motor according to claim 1, characterized in that: The side walls of the housing (11) are respectively provided with a water inlet joint (3) and a water outlet joint (4); the side walls of the housing (11) are respectively provided with two screw holes, the two screw holes being connected to the water channel (15); the water inlet joint (3) and the water outlet joint (4) are respectively connected to the internal threads of the two screw holes.

3. A highly integrated single-phase double-salient-pole permanent magnet motor according to claim 2, characterized in that: An isolation plate (19) is sealed and connected at a gap between the outer shell (11) and the inner shell (12) between the two screw holes.

4. The highly integrated single-phase double-salient-pole permanent magnet motor according to claim 1, characterized in that: The notch (18) on the first partition (13) is opened at the bottom, and the notch (18) on the second partition (14) is opened at the top.

5. The highly integrated single-phase double-salient-pole permanent magnet motor according to claim 4, characterized in that: The plurality of water channels (15) and the plurality of slots (18) together form a cooling water tank which reciprocates up and down.

6. The highly integrated single-phase double-salient-pole permanent magnet motor according to claim 1, characterized in that: A heat dissipation fin (2) is integrally formed around the outer wall of the housing (11).

Images