Stator with heat dissipation protection structure

Abstract

The utility model relates to a stator with a heat dissipation protection structure, which comprises an outer protection ring and a stator iron core, the stator iron core is arranged in the outer protection ring, a plurality of reinforcing ribs are inserted into the peripheral side of the stator iron core, and heat dissipation pieces are arranged in the reinforcing ribs; the heat dissipation piece comprises a groove, a positioning cavity pipe, a positioning column and an air inlet hole. The utility model relates to the technical field of stator heat radiation protection. When the stator with the heat dissipation protection structure is used, air at the position of the stator can be discharged to the outer side of a motor, so that the heat dissipation pressure of a fan of the motor is reduced, the heat dissipation efficiency during motor driving can be improved, a heat dissipation piece can assist in vibration buffering of a stator iron core while dissipating heat through cooperation of a sliding sheet, and the service life of the stator is prolonged. Therefore, the stator can be protected while the heat dissipation efficiency of the stator can be improved through the heat dissipation piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stator heat dissipation protection, especially to a stator with heat dissipation protection structure. BACKGROUND

[0002] The motor stator is the stationary part of the motor. The stator is composed of a stator core, a stator winding and a machine base. The main function of the stator is to generate a rotating magnetic field, while the main function of the rotor is to be cut by the magnetic lines of force in the rotating magnetic field to generate (output) current.

[0003] In the prior art, a stator protection structure disclosed in CN211209398U includes a stator protection assembly installed on the stator core and a fan installed on the rotor. A wire slot part is installed in the stator core, and a rotor is installed in the wire slot part. The stator protection assembly includes longitudinal reinforcing rib protrusions arranged around the outer side of the stator core, forming an inner reinforcing rib member. A longitudinal slot is provided on the bottom surface of the reinforcing rib protrusion, which is in the shape of a rectangle, and the bottom surface of the longitudinal slot is open. A plurality of vertical heat dissipation grooves are provided in the middle of the top of the longitudinal slot in the longitudinal direction of the longitudinal slot. It uses an inner reinforcing rib member installed on the outer side of the stator core, and an outer partial body type buffer mechanism is installed on the inner reinforcing rib member. It is convenient to use, can form multi-stage protection, and can ensure the normal use of the stator and prolong its service life.

[0004] When the application is in use, the V-shaped heat dissipation groove, the vertical heat dissipation groove and the oblique heat dissipation groove form multi-channel heat dissipation, thereby improving the heat dissipation performance. However, after the heat is dissipated, the heat is still discharged by the fan of the motor, thereby increasing the heat dissipation pressure of the motor itself, which can easily affect the heat dissipation efficiency in the case of long-term use. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a stator with heat dissipation protection structure to solve the technical problems mentioned in the background.

[0006] The above technical purpose of the utility model is achieved by the following technical scheme:

[0007] A stator with heat dissipation protection structure, comprising an outer protection ring and a stator core, the stator core is arranged in the outer protection ring, a plurality of reinforcing ribs are inserted into the outer circumferential side of the stator core, and a heat dissipation member is arranged in the reinforcing rib.

[0008] The heat dissipation piece comprises a groove, a positioning cavity pipe, a positioning column and an air inlet hole, the groove is arranged on one side of the reinforcing rib close to the outer protective ring, the positioning cavity pipe is fixedly installed in the groove, the positioning column is slidingly installed at the top of the positioning cavity pipe, one end of the positioning column away from the positioning cavity pipe extends to the outer circumferential side of the outer protective ring and is fixedly connected with the outer protective ring, the air inlet hole is arranged on the outer circumferential side of the positioning cavity pipe, the positioning column is in a tubular shape, one end of the positioning column close to the outer protective ring is provided with a one-way air outlet piece, and the air inlet hole is provided with a one-way air inlet piece.

[0009] In a preferred example, the bottom of the positioning cavity pipe is slidingly connected with a sliding sheet, and the sliding sheet is arranged in dynamic sealing at the bottom of the positioning cavity pipe.

[0010] In a preferred example, the one-way air outlet piece comprises a plurality of first elastic sheets, the first elastic sheets are arranged in an annular array and fixedly installed in the positioning cavity pipe, two adjacent first elastic sheets are attached to each other, a positioning ring is fixedly connected in the positioning cavity pipe, and a first side of the positioning ring close to the outer protective ring is attached to the first elastic sheets.

[0011] In a preferred example, the one-way air inlet piece comprises a plurality of second elastic sheets, the second elastic sheets are arranged in an annular array and fixedly installed in the air inlet hole, two adjacent second elastic sheets are attached to each other, a limiting ring is fixedly connected in the air inlet hole, and a side of the limiting ring close to the positioning cavity pipe is attached to the second elastic sheets.

[0012] In a preferred example, a plurality of reinforcing ribs are arranged in an annular array on the outer circumferential side of the stator core.

[0013] In summary, the utility model has at least one of the following beneficial technical effects:

[0014] 1. The stator with the heat dissipation protection structure can discharge air at the stator to the outside of the motor, thereby reducing the heat dissipation pressure of the fan of the motor, improving the heat dissipation efficiency of the motor during driving, and assisting the vibration buffering of the stator core while dissipating heat through the cooperation of the sliding sheet, thereby achieving the effects of improving the heat dissipation efficiency of the stator through the heat dissipation piece and protecting the stator.

[0015] 2. In this stator with a heat dissipation and protection structure, the first spring pieces are arranged in a ring array, and each first spring piece is triangular. The base of the triangle is fixedly connected to the inner circumference of the positioning cavity tube, so that several first spring pieces form a circular shape, thereby achieving the effect of sealing the end of the positioning cavity tube. Because of the limitation of the positioning ring, after a negative pressure is formed in the positioning cavity tube, the first spring pieces are prevented from bending, thus ensuring that the effect of drawing in hot air from the periphery of the stator core is not affected.

[0016] 3. In this stator with a heat dissipation and protection structure, the second spring is arranged in a ring array within the air vent, and its shape and arrangement are the same as those of the first spring. Therefore, when a negative pressure is formed in the positioning cavity, it will bend inward, causing hot air around the stator core to be drawn in. When the air pressure in the positioning cavity increases, the second spring is prevented from bending due to the constraint of the limiting ring, thereby achieving the effect of rapid heat dissipation in conjunction with the unidirectional air outlet. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a stator with a heat dissipation and protection structure according to the present invention.

[0019] Figure 2 This is a schematic diagram of a stator core structure with a heat dissipation and protection structure according to the present invention.

[0020] Figure 3 This is a side cross-sectional view of the positioning cavity and positioning column of a stator with a heat dissipation and protection structure according to the present invention.

[0021] Figure 4 For the present utility model Figure 3 Top view of the cross-sectional structure.

[0022] Figure 5 For the present utility model Figure 3 A schematic diagram of the overall structure on the right.

[0023] In the diagram, 1. Outer protective ring; 2. Stator core; 3. Reinforcing rib; 4. Heat sink; 5. Groove; 6. Positioning cavity tube; 7. Positioning post; 8. Air inlet; 9. One-way air outlet; 10. One-way air inlet; 11. Sliding plate; 12. First spring; 13. Positioning ring; 14. Second spring; 15. Limiting ring. DETAILED DESCRIPTION

[0024] The utility model is further explained in detail below with reference to the drawings.

[0025] Embodiment:

[0026] With reference to Figures 1-5 The utility model discloses a stator with heat dissipation protection structure, including the outer protection ring 1 and the stator core 2, the stator core 2 sets up in the outer protection ring 1, the outer periphery side of stator core 2 inserts the reinforcing rib 3 of a plurality of quantities, the reinforcing rib 3 is provided with the heat dissipation piece 4 in,

[0027] The heat dissipation piece 4 includes recess 5, positioning cavity pipe 6, positioning column 7 and gas inlet hole 8, recess 5 is set up in the reinforcing rib 3 near the one side of outer protection ring 1, positioning cavity pipe 6 is fixedly installed in recess 5, positioning column 7 is slidably installed in the top of positioning cavity pipe 6, the one end of positioning column 7 away from positioning cavity pipe 6 extends to the outer periphery side of outer protection ring 1, and is fixedly connected with outer protection ring 1, gas inlet hole 8 is set up in the outer periphery side of positioning cavity pipe 6, positioning column 7 is tubular, the one end of positioning column 7 near outer protection ring 1 is provided with one-way air outlet piece 9, and one-way air inlet piece 10 is set up in gas inlet hole 8.

[0028] In this embodiment, when the motor starts, vibration will be generated, and the internal stator core 2 will also be driven to vibrate. When the stator core 2 vibrates, it will drive the vibration of the positioning cavity pipe 6. Since the outer protection ring 1 and the stator core 2 are connected by the heat dissipation piece 4, and the positioning cavity pipe 6 and the positioning column 7 are in sliding connection, the stator core 2 will drive the positioning cavity pipe 6 to slide, so that the positioning column 7 moves towards the inside of the positioning cavity pipe 6. Since the one end of the positioning column 7 away from the positioning cavity pipe 6 is closed by the one-way air outlet piece 9, the air pressure in the positioning cavity pipe 6 will increase. When the air pressure increases, the gas inlet hole 8 is closed by the one-way air inlet piece 10, so as to prevent the gas from being discharged. When the air pressure increases to a certain threshold value, the hot air will be discharged from the one-way air outlet piece 9, so as to discharge the hot air around the stator core 2.

[0029] At the same time, when the stator core 2 vibrates, part of the positioning cavity pipe 6 will move away from the positioning column 7, so that a negative pressure is formed in the inside of the positioning cavity pipe 6. At this time, the one-way air outlet piece 9 is closed, and the one-way air inlet piece 10 is opened by the negative pressure in the inside of the positioning cavity pipe 6, so as to suck the hot air around the stator core 2. When the positioning cavity pipe 6 moves towards the positioning column 7, the hot air absorbed in the inside of the positioning cavity pipe 6 is discharged.

[0030] The positioning column 7 arranged therein needs to extend to the outside of the motor when passing through the outer protection ring 1, so that hot air can be discharged to the outside of the motor, reducing the heat dissipation pressure of the fan blades of the motor itself and improving the heat dissipation efficiency.

[0031] In further preferable embodiments of the present application, as shown in Figure 3 The slide 11 is slidingly connected to the inner bottom of the positioning cavity tube 6, and the slide 11 is arranged as dynamic sealing at the inner bottom of the positioning cavity tube 6.

[0032] In this embodiment, when the air pressure in the positioning cavity tube 6 initially increases, the slide 11 moves in the direction of the stator core 2 due to high pressure, thereby increasing the air pressure of the part of the positioning cavity tube 6 close to the stator core 2, and relieving the vibration of the positioning cavity tube 6, achieving the effect of buffering.

[0033] In further preferable embodiments of the present application, as shown in Figures 3-4 The one-way air outlet member 9 includes a plurality of first elastic sheets 12, the first elastic sheets 12 are arranged in an annular array and fixedly installed in the positioning cavity tube 6, adjacent two first elastic sheets 12 are in close contact with each other, the positioning cavity tube 6 is fixedly connected with a positioning ring 13, and the positioning ring 13 close to the first side of the outer protection ring 1 is in close contact with the first elastic sheet 12.

[0034] In this embodiment, the first elastic sheet 12 is arranged in an annular array, and each first elastic sheet 12 is a triangle, and the bottom side of the triangle is fixedly connected with the inner circumferential side of the positioning cavity tube 6, so that a plurality of first elastic sheets 12 form a circular shape, achieving the effect of closing the end of the positioning cavity tube 6, and because of the limitation of the positioning ring 13, the first elastic sheet 12 avoids bending after forming negative pressure in the positioning cavity tube 6, thereby ensuring the effect of avoiding affecting the suction of hot air around the stator core 2.

[0035] When the air pressure inside the positioning cavity tube 6 reaches a certain threshold value, the first elastic sheet 12 will be pushed, so that the first elastic sheet 12 bends away from the positioning cavity tube 6, so that the gap leaks, and the air sucked into the positioning cavity tube 6 is discharged, achieving the effect of heat dissipation.

[0036] In further preferable embodiments of the present application, as shown in Figures 3-5 The one-way air inlet member 10 includes a plurality of second elastic sheets 14, the second elastic sheets 14 are arranged in an annular array and fixedly installed in the air inlet hole 8, adjacent two second elastic sheets 14 are in close contact with each other, the air inlet hole 8 is fixedly connected with a limiting ring 15, and the limiting ring 15 close to one side of the positioning cavity tube 6 is in close contact with the second elastic sheet 14.

[0037] In the embodiment, the second elastic sheet 14 is arranged in a ring array in the air hole, and has the same shape and arrangement as the first elastic sheet 12, so that when the negative pressure is formed in the positioning cavity tube 6, the second elastic sheet 14 is bent inward, so that the hot air around the stator core 2 is sucked in, and when the air pressure in the positioning cavity tube 6 increases, the second elastic sheet 14 is prevented from being bent due to the limitation of the limiting ring 15, so that the effect of cooperating with the one-way air outlet member 9 to quickly dissipate heat is achieved.

[0038] In the further preferable embodiment of the utility model, as shown in Figure 2 The reinforcing ribs 3 are arranged in a ring array on the outer circumferential side of the stator core 2.

[0039] In the embodiment, the reinforcing ribs 3 are arranged in a ring array on the outer circumferential side of the stator core 2, so that when the stator core 2 is supported by the support member and the outer protection ring 1, the stress points of the stator core 2 are uniform, and the uneven stress is avoided to affect the subsequent cooperation with the rotor.

[0040] The embodiments of the specific embodiment are preferable embodiments of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A stator with heat dissipation protection structure, comprising an outer protection ring (1) and a stator core (2), the stator core (2) is arranged in the outer protection ring (1), characterized in that, The reinforcing ribs (3) are inserted on the outer periphery of the stator core (2), and the heat radiating members (4) are arranged in the reinforcing ribs (3). The heat radiating members (4) comprise grooves (5), positioning cavity tubes (6), positioning columns (7) and air inlet holes (8). The grooves (5) are arranged on the side of the reinforcing ribs (3) close to the outer protective ring (1). The positioning cavity tubes (6) are fixedly installed in the grooves (5). The positioning columns (7) are slidingly installed on the top of the positioning cavity tubes (6). The ends of the positioning columns (7) away from the positioning cavity tubes (6) extend to the outer periphery of the outer protective ring (1) and are fixedly connected with the outer protective ring (1). The air inlet holes (8) are arranged on the outer periphery of the positioning cavity tubes (6). The positioning columns (7) are in tubular shape. The ends of the positioning columns (7) close to the outer protective ring (1) are provided with one-way air outlet members (9). The air inlet holes (8) are provided with one-way air inlet members (10).

2. The stator with heat dissipation protection structure according to claim 1, characterized in that, The sliding plates (11) are slidingly connected to the bottoms of the positioning cavity tubes (6). The sliding plates (11) are dynamically sealed on the bottoms of the positioning cavity tubes (6).

3. The stator with heat dissipation protection structure according to claim 2, characterized in that, The one-way air outlet members (9) comprise a plurality of first elastic plates (12). The first elastic plates (12) are fixedly installed in the positioning cavity tubes (6) in annular array. Adjacent two first elastic plates (12) are in close contact with each other. The positioning rings (13) are fixedly connected in the positioning cavity tubes (6). The first sides of the positioning rings (13) close to the outer protective ring (1) are in close contact with the first elastic plates (12).

4. The stator with heat dissipation protection structure according to claim 3, characterized in that, The one-way air inlet members (10) comprise a plurality of second elastic plates (14). The second elastic plates (14) are fixedly installed in the air inlet holes (8) in annular array. Adjacent two second elastic plates (14) are in close contact with each other. The limiting rings (15) are fixedly connected in the air inlet holes (8). The sides of the limiting rings (15) close to the positioning cavity tubes (6) are in close contact with the second elastic plates (14).

5. A stator with heat dissipation protection structure according to claim 4, characterized in that, The reinforcing ribs (3) are arranged in annular array on the outer periphery of the stator core (2).

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