Motor stator arrangement structure

Abstract

The utility model provides a motor stator arrangement structure, comprising a plurality of iron core blocks which are coaxially arranged, each iron core block comprises a plurality of silicon steel wafers which are coaxially stacked, the central part of each silicon steel wafer is provided with a central hole, the edge part of each silicon steel wafer is provided with a mounting hole, a plate body part is formed between the adjacent mounting holes, and the plate body part is provided with a ventilation hole penetrating through the silicon steel wafers; the supporting blocks are located between the adjacent iron core blocks, and the upper side walls and the lower side walls of the supporting blocks are connected with the plate body parts of the adjacent silicon steel wafers in a one-to-one correspondence mode. According to the motor stator arrangement structure provided by the utility model, the ventilation holes are arranged on the silicon steel wafers, so that the plurality of ventilation flow channels are formed on the iron core blocks, and the plurality of supporting blocks are additionally arranged among the plurality of iron core blocks, so that a certain gap is formed between the adjacent iron core blocks, and the gap is directly communicated with the inner cavity of the motor; the flowing efficiency of the airflow in the ventilation flow channel is further promoted, and the heat dissipation effect of the motor inner cavity is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor stator technical field, especially relate to a motor stator arrangement structure. BACKGROUND

[0002] When the motor is in working state, it will convert electric energy into mechanical energy required by load, but at the same time, the motor will also produce some losses, including copper loss, iron loss, mechanical loss, etc. ; regarding copper loss, according to Joule's law, when electric current passes through conductor, metal conductor will produce heat, and this heat is called copper loss in the motor; regarding iron loss, the main magnetic flux of the motor flows through the iron core, when electric current passes through the electronic coil, alternating magnetic field will be generated in the iron core, and eddy current is generated in the iron core, which further produces energy loss and is dissipated in the form of heat, and the temperature rise will directly affect the loss and working efficiency of the motor.

[0003] At present, the heat dissipation mode of the motor is through the heat dissipation fan coaxially connected with the rotating shaft of the rotor at the tail end, which is used for injecting external air into the inner cavity of the motor, and the heat dissipation effect is achieved through the airflow flow mode, but the stators in the inner cavity of the motor are mostly stacked together by a plurality of stator core sheets, which directly hinders the flow efficiency of the airflow in the inner cavity of the motor, and further directly affects the heat dissipation effect of the motor. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model provides a motor stator arrangement structure, which comprises: a plurality of iron core blocks and a plurality of supporting blocks, the plurality of iron core blocks are coaxially arranged;

[0005] The iron core block comprises a plurality of coaxially stacked silicon steel discs, a central hole for accommodating the rotor is formed in the center of the silicon steel disc, a plurality of mounting holes for mounting wires are formed in the circumferential array of the edge of the silicon steel disc, and a plate body part is formed between adjacent mounting holes, and a ventilation hole penetrating through the silicon steel disc is formed in the central position of the plate body part;

[0006] The plurality of supporting blocks are located between adjacent iron core blocks, the plurality of supporting blocks are circumferentially arranged corresponding to the plate body part of the silicon steel disc, and the upper and lower sidewalls of the plurality of supporting blocks are respectively and one by one connected to the plate body part of the adjacent silicon steel disc.

[0007] Further, the supporting block comprises a first connecting part, a second connecting part and a connecting part connecting the first connecting part and the second connecting part, the first connecting part and the second connecting part are arranged in parallel, the connecting part is arranged perpendicularly to the first connecting part and the second connecting part, and the axial line of the connecting part intersects with the center of the central hole.

[0008] Further, the connecting part is located directly above the ventilation hole, a notch is formed on the side of the connecting part facing the ventilation hole, and a through hole is formed on the connecting part, penetrating through the connecting part and communicating with the connecting part.

[0009] Furthermore, a guide block facing the ventilation hole is provided on the inner bottom surface of the slot, and the cross section of the guide block adopts a triangular structure.

[0010] Furthermore, the ventilation hole adopts a strip structure, and the axis of the ventilation hole is arranged in parallel with the axis of the connecting portion.

[0011] Furthermore, the connection surfaces of the first connection portion, the second connection portion and the connecting portion are curved surfaces.

[0012] Furthermore, the side wall of the support block is connected to the plate body by welding.

[0013] Compared with the prior art, the embodiments of the present invention have at least the following advantages:

[0014] The stator arrangement structure of the motor of the present invention is provided with ventilation holes on the silicon steel discs used to constitute the core blocks, so that a plurality of ventilation flow channels penetrating the two ends of the core blocks are formed on the core blocks, and a plurality of support blocks are added between the core blocks, so that a certain gap is formed between adjacent core blocks, and the gap is directly connected with the inner cavity of the motor, thereby further promoting the flow efficiency of the airflow in the ventilation flow channel, and taking away the heat of the inner cavity of the motor by strengthening air convection, thereby improving the heat dissipation effect of the inner cavity of the motor, and improving the service life and working efficiency of the motor.

[0015] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram showing the stator arrangement structure of a motor in an embodiment of the present utility model is shown;

[0018] Figure 2 An enlarged schematic diagram of structure A in an embodiment of the present utility model is shown;

[0019] Figure 3 A schematic top view of the stator arrangement structure of a motor in an embodiment of the present invention is shown.

[0020] In the figure, the iron core block 1, the support block 2, the first connecting part 21, the second connecting part 22, the connecting part 23, the notch 24, the guide block 25, the silicon steel disc 3, the center hole 31, the mounting hole 32, the plate body part 33, and the ventilation hole 34. DETAILED DESCRIPTION

[0021] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0022] The present application provides a motor stator arrangement structure, Figure 1 The present application provides a motor stator arrangement structure, Figure 1 In the figure, the iron core block 1, the support block 2, the first connecting part 21, the second connecting part 22, the connecting part 23, the notch 24, the guide block 25, the silicon steel disc 3, the center hole 31, the mounting hole 32, the plate body part 33, and the ventilation hole 34.

[0023] The iron core block 1 comprises a plurality of silicon steel discs 3 arranged coaxially and stacked in sequence from top to bottom. A center hole 31 for accommodating a rotor is formed in the center of the silicon steel disc 3. A plurality of mounting holes 32 for mounting wires are formed in the circumferential array of the edge of the silicon steel disc 3. A plate body part 33 is formed between adjacent mounting holes 32. A ventilation hole 34 penetrating the silicon steel disc 3 is formed in the central position of the plate body part 33.

[0024] The plurality of support blocks 2 are located between adjacent iron core blocks 1. The plurality of support blocks 2 are arranged in a circumferential array corresponding to the plate body parts 33 of the silicon steel discs 3. The upper and lower sidewalls of the plurality of support blocks 2 respectively correspond to the plate body parts 33 of adjacent silicon steel discs 3.

[0025] The present application forms a plurality of ventilation flow channels penetrating the two ends of the iron core block 1 by forming a ventilation hole 34 in the silicon steel disc 3 constituting the iron core block 1. A plurality of support blocks 2 are additionally arranged between the plurality of iron core blocks 1, so that a gap is formed between adjacent iron core blocks 1. The gap directly communicates with the inner cavity of the motor, further improves the flow efficiency of the airflow in the ventilation flow channel, and improves the heat dissipation effect of the inner cavity of the motor by strengthening the air convection, thereby improving the service life and working efficiency of the motor.

[0026] Specifically, in Figure 2In the shown example, the support block 2 comprises a first connecting part 21, a second connecting part 22, and a connecting part 23 connecting the first connecting part 21 and the second connecting part 22, the first connecting part 21 and the second connecting part 22 are arranged in parallel, and the connecting part 23 is arranged perpendicularly to the first connecting part 21 and the second connecting part 22. It can be seen that the axial line of the connecting part 23 and the center of the center hole 31 can form an intersection, so that the cross section of the support block 2 is in the shape of an I-beam, and on the basis of the axial line of the connecting part 23 being directed towards the center of the center hole 1, the support block 2 is in an extended state towards the center.

[0027] In addition, in Figure 2 In the shown example, the bearing surface of the first connecting part 21 is larger than the bearing surface of the second connecting part 22, which cooperates with the overall structure of the plate body part 33, further ensuring the stability of the upper and lower sidewalls of the support block 2 connecting the plate body parts 33 of the adjacent silicon steel discs 3.

[0028] On the basis of setting the ventilation hole 34 to facilitate heat dissipation of the overall device, the connecting part 23 is located directly above the ventilation hole 34, and a notch 24 is provided on the side of the connecting part 23 facing the ventilation hole 34, wherein the notch 24 penetrates the front and rear sidewalls of the connecting part 23, and a through hole is provided on the connecting part 23, which penetrates the connecting part 23 and communicates with the connecting part 23. On the basis of ensuring that the air in the motor flows smoothly into the ventilation hole 34, the connecting part 23 is arranged directly above the ventilation hole 34, and the ventilation hole 34 is reinforced by the connecting part 23 to improve the overall structural stability of the plate body part 33, avoiding the decrease of the hardness of the overall structure of the plate body part 33 due to the addition of the ventilation hole 34.

[0029] It should be noted that the remaining silicon steel discs 3 are in a state of being fully pressed by adjacent silicon steel discs 3, so the influence of the ventilation hole 34 on the overall structural strength of the core block 1 is not considered here.

[0030] Reference Figure 3 In the shown example, in order to better guide the air in the motor to flow into the ventilation hole 34 through the notch 24, a guide block 25 is provided on the inner bottom surface of the notch 24 and directed towards the ventilation hole 34, and the cross section of the guide block 25 adopts a triangular structure to form an air direction guiding surface.

[0031] At the same time, in order to improve the cooperation between the ventilation hole 34 and the notch 24, the ventilation hole 34 adopts a strip structure, and the axial line of the ventilation hole 34 is arranged in parallel to the axial line of the connecting part 23, on the basis of reinforcing the ventilation hole 34 by the support block 2, the maximum of the inlet is realized.

[0032] In the embodiment, the connecting surfaces of the first connecting part 21, the second connecting part 22 and the connecting part 23 are all curved surfaces, and on the basis of the cross section of the supporting block 2 being a circular shape, the connecting surfaces of the first connecting part 21, the second connecting part 22 and the connecting part 23 are changed, so that the front and rear sidewalls of the connecting part 23 and the first connecting part 21 and the second connecting part 22 jointly form an outwardly expanding structure, the function of guiding air into the slot 24 is realized, and the efficiency of air flow is improved.

[0033] In the actual production process, the sidewall of the supporting block 2 and the plate body part 33 are connected by welding, so that the firmness of the overall structure is improved.

[0034] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between multiple elements or the interaction relationship between multiple elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An arrangement of a stator of an electric machine, characterized in that The utility model relates to a kind of iron core group and support block, including: Several iron core blocks (1) and several support blocks (2), the several iron core blocks (1) are coaxially arranged; The iron core block (1) includes several coaxially stacked silicon steel discs (3), the central part of the silicon steel disc (3) is provided with a central hole (31) for accommodating the rotor, the edge of the silicon steel disc (3) is provided with a plurality of mounting holes (32) for mounting the wire in circumferential array, the plate body part (33) is provided with a ventilation hole (34) penetrating the silicon steel disc (3) in the central position between adjacent mounting holes (32). The several support blocks (2) are located between adjacent iron core blocks (1), and the several support blocks (2) are arranged in circumferential array corresponding to the plate body part (33) of the silicon steel disc (3), and the upper and lower sidewalls of the several support blocks (2) are respectively and one by one connected to the plate body part (33) of the adjacent silicon steel disc (3).

2. The arrangement of a motor stator according to claim 1, characterized in that The support block (2) includes a first connecting part (21), a second connecting part (22), and a connecting part (23) connecting the first connecting part (21) and the second connecting part (22), the first connecting part (21) and the second connecting part (22) are arranged in parallel, the connecting part (23) is arranged perpendicular to the first connecting part (21) and the second connecting part (22), and the axial line of the connecting part (23) intersects the center of the central hole (31).

3. The arrangement of a motor stator according to claim 2, characterized in that The connecting part (23) is located directly above the ventilation hole (34), and the connecting part (23) is provided with a notch (24) on the side facing the ventilation hole (34), and the connecting part (23) is provided with a through hole penetrating the connecting part (23) and communicating with the connecting part (23).

4. The arrangement of a motor stator according to claim 3, characterized in that The bottom surface of the notch (24) is provided with a guide block (25) facing the ventilation hole (34), and the cross section of the guide block (25) adopts a triangular structure.

5. The arrangement of a motor stator according to claim 3, characterized in that The ventilation hole (34) adopts a strip structure, and the axial line of the ventilation hole (34) is arranged in parallel with the axial line of the connecting part (23).

6. The arrangement of a motor stator according to claim 3, characterized in that, The connecting surface of the first connecting part (21), the second connecting part (22) and the connecting part (23) adopts a curved surface.

7. The arrangement of a motor stator according to any of claims 1 - 6, characterized in that The sidewall of the support block (2) and the plate body part (33) are connected by welding.

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