Heat dissipation structure of oil cooling loop on surface of stator core of oil cooling motor

Abstract

The utility model discloses a heat dissipation structure for an oil cooling loop on the surface of a stator core of an oil cooling motor, which belongs to the technical field of oil cooling motors and comprises an end face punching sheet, a middle punching sheet B is welded on the upper end face of the end face punching sheet, and a plurality of groups of middle punching sheets A are welded on the upper end face of the middle punching sheet B. According to the utility model, through the arrangement of the middle punching sheet A, the middle punching sheet B and the end surface punching sheets, the three groups of punching sheets are welded into the motor stator iron core, and the corresponding oil passing grooves are arranged on the outer surfaces of the three groups of punching sheets, so that cooling oil can be fully contacted with a motor stator, and the cooling effect is improved. According to the utility model, the middle punching sheet A and the middle punching sheet B are welded and fixed in a staggered manner, so that the sprayed cooling oil can cover the surface of the stator in a Z shape in a large range, the contact area between the cooling oil and the stator is increased, and the heat dissipation efficiency of the stator is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil-cooled motors, and in particular relates to an oil-cooled circuit heat dissipation structure on the surface of a stator core of an oil-cooled motor. Background Art

[0002] The oil-cooled motor stator heat dissipation structure refers to a cooling system established inside the motor stator. The system directly cools the stator and its windings by introducing cooling oil to achieve the purpose of improving the motor power density and efficiency.

[0003] When cooling the existing oil-cooled motors, most of them spray cooling oil onto the surface of the stator through the oil spray holes to achieve stator cooling. However, the contact area between the cooling oil and the stator is relatively small, and the cooling oil cannot fully contact the stator surface, which affects the heat dissipation efficiency of the stator. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides an oil-cooling motor stator core surface oil cooling circuit heat dissipation structure, which has the characteristics of higher heat dissipation efficiency for the stator and sufficient contact of the cooling oil with the stator.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat dissipation structure for an oil-cooled motor stator core surface oil cooling circuit, comprising an end face punching sheet, an intermediate punching sheet B is welded on the upper end face of the end face punching sheet, multiple groups of intermediate punching sheets A are welded on the upper end face of the intermediate punching sheet A, another group of intermediate punching sheets B is welded on the upper end face of the intermediate punching sheet A, another group of end face punching sheets is welded on the upper end of the other group of intermediate punching sheets B, an oil groove 2 is provided on the outer surface of the intermediate punching sheet B, an oil groove 1 is provided on the outer surface of the intermediate punching sheet A, and the inner sides of the end face punching sheet, the intermediate punching sheet B and the intermediate punching sheet A are all provided in the tooth groove.

[0006] Preferably, the outer surface of the middle punching piece B is provided with six groups of convex ribs in a circular array, and the outer surface of the middle punching piece A is provided with twelve groups of convex ribs in a circular array.

[0007] Preferably, the end face punching piece and the middle punching piece B are fixed by electric welding, and an oil injection hole is opened inside the end face punching piece, and the oil injection hole is located inside the second oil groove facing the outer surface of the middle punching piece B.

[0008] Preferably, the first oil groove and the second oil groove between the middle punch B and the middle punch A are distributed in a staggered manner.

[0009] Preferably, the outer surfaces of the two groups of end face punching sheets and the multiple groups of intermediate punching sheets A can form a Z-shaped cooling oil circuit after being welded and fixed.

[0010] Preferably, welds are provided at the center positions of the ribs on the outer sides of the end face punching sheets, the middle punching sheet B and the middle punching sheet A.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model arranges the intermediate punching sheet A, the intermediate punching sheet B and the end face punching sheet to weld three groups of punching sheets into a motor stator core, and arranges corresponding oil grooves on the outer surfaces of the three groups of punching sheets to facilitate the cooling oil to fully contact the motor stator, thereby improving the heat dissipation efficiency of the motor stator.

[0013] 2. The utility model fixes the middle punching sheet A and the middle punching sheet B by welding them in an offset shape, so that the sprayed cooling oil can cover a large area of ​​the stator surface in a Z shape, thereby increasing the contact area between the cooling oil and the stator, thereby further improving the heat dissipation efficiency of the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a side view of the utility model;

[0016] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 4 This is a three-dimensional diagram of the middle punch A of the present invention;

[0018] Figure 5 This is a three-dimensional diagram of the middle punching piece B of the present invention;

[0019] Figure 6 This is a three-dimensional diagram of the end face punching sheet of the utility model;

[0020] In the figure: 1. End punch; 2. Middle punch B; 3. Oil injection hole; 4. Middle punch A; 5. Z-shaped cooling oil circuit; 6. Tooth groove; 7. Raised rib; 8. Weld; 9. Oil groove 1; 10. Oil groove 2. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-6 The utility model provides the following technical solutions: a heat dissipation structure of an oil-cooled motor stator core surface oil cooling circuit, comprising an end face punching sheet 1, an intermediate punching sheet B2 is welded on the upper end face of the end face punching sheet 1, a plurality of groups of intermediate punching sheets A4 are welded on the upper end face of the intermediate punching sheet A4, another group of intermediate punching sheets B2 is welded on the upper end face of the intermediate punching sheet A4, another group of end face punching sheets 1 is welded on the upper end of the other group of intermediate punching sheets B2, an oil groove 2 10 is provided on the outer surface of the intermediate punching sheet B2, an oil groove 1 9 is provided on the outer surface of the intermediate punching sheet A4, and the inner sides of the end face punching sheet 1, the intermediate punching sheet B2 and the intermediate punching sheet A4 are all provided in the tooth groove 6.

[0024] Specifically, the outer surface of the middle punch B2 is provided with six groups of ribs 7 in an annular array, and the outer surface of the middle punch A4 is provided with twelve groups of ribs 7 in an annular array.

[0025] By adopting the above technical solution, the arrangement of the structure can ensure that the ribs 7 on the surfaces of the intermediate punch A4 and the intermediate punch B2 can be aligned accordingly after welding.

[0026] Specifically, the end punching sheet 1 and the middle punching sheet B2 are fixed by electric welding. An oil injection hole 3 is opened inside the end punching sheet 1. The oil injection hole 3 is located inside the oil groove 2 10 facing the outer surface of the middle punching sheet B2.

[0027] By adopting the above technical solution, the setting of this structure can enable the oil to be input from the external pipeline, enter the cavity formed by the shell and the iron core, flow on the outer surface of the iron core to dissipate heat, and be sprayed outward from the internal cavity through the oil injection hole 3 inside the end face punching sheet 1.

[0028] Specifically, the oil groove 1 9 and the oil groove 2 10 between the middle punch B2 and the middle punch A4 are staggered.

[0029] By adopting the above technical solution, the setting of this structure can make the cooling oil flow along the return oil path after entering from the oil inlet hole of the shell. By setting a number of protrusions in the oil groove 1 9 and the oil groove 2 10 along the way, the cooling oil can fully contact and cool the iron core.

[0030] When this embodiment is in use, the cooling oil enters from the oil inlet hole of the shell and flows along the return oil path. A number of protrusions are provided in the oil groove 1 9 and the oil groove 2 10 along the way to prevent the cooling oil from fully contacting with the iron core for cooling. Secondly, the oil is input from the external pipeline, enters the cavity formed by the shell and the iron core, flows on the outer surface of the iron core to dissipate heat, and is sprayed out from the internal cavity through the oil injection hole 3 inside the end face punching sheet 1.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that the outer surfaces of the two groups of end punching sheets 1 and the multiple groups of intermediate punching sheets A4 can form a Z-shaped cooling oil circuit 5 after being welded and fixed.

[0033] By adopting the above technical solution, the setting of this structure can enable the cooling oil to form a Z-shaped loop on the surface of the motor stator, so that the cooling oil can fully cover the surface of the motor stator, thereby further improving the heat dissipation efficiency of the motor stator.

[0034] Specifically, the center of the rib 7 on the outer side of the end punching piece 1, the middle punching piece B2 and the middle punching piece A4 is provided with a weld 8.

[0035] By adopting the above technical solution, the arrangement of the structure can facilitate the welding and fixing of the end face punching sheet 1, the middle punching sheet B2 and the middle punching sheet A4.

[0036] When this embodiment is in use, a Z-shaped cooling oil circuit 5 can be formed after the outer surfaces of two groups of end face punching sheets 1 and multiple groups of intermediate punching sheets A4 are welded and fixed, so that the cooling oil can form a Z-shaped circuit on the surface of the motor stator, so that the cooling oil can fully cover the surface of the motor stator, thereby further improving the heat dissipation efficiency of the motor stator. By providing welds 8 at the center position of the convex ribs 7 on the outside of the end face punching sheet 1, the intermediate punching sheet B2 and the intermediate punching sheet A4, the end face punching sheet 1, the intermediate punching sheet B2 and the intermediate punching sheet A4 can be conveniently welded and fixed.

[0037] The working principle and use process of the present invention: When the present invention is in use, the cooling oil enters from the oil inlet hole of the shell and flows along the return oil path. A number of protrusions are provided in the oil groove 1 9 and the oil groove 2 10 along the way to prevent the cooling oil from fully contacting with the iron core for cooling. Secondly, the oil is input from the external pipeline, enters the cavity formed by the shell and the iron core, flows on the outer surface of the iron core to dissipate heat, and is sprayed outward from the internal cavity through the oil injection hole 3 inside the end face punching 1; a Z-shaped cooling oil circuit 5 can be formed on the outer surfaces of two groups of end face punchings 1 and multiple groups of intermediate punchings A4 after welding and fixing, so that the cooling oil can form a Z-shaped circuit on the surface of the motor stator, so that the cooling oil can fully cover the surface of the motor stator, thereby further improving the heat dissipation efficiency of the motor stator, and welds 8 are provided at the center position of the ribs 7 on the outside of the end face punching 1, the intermediate punching B2 and the intermediate punching A4, so that the end face punching 1, the intermediate punching B2 and the intermediate punching A4 can be conveniently welded and fixed.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure for an oil-cooled motor stator core surface oil cooling circuit, comprising an end face punching sheet (1), characterized in that: The upper end surface of the end face punching sheet (1) is welded with an intermediate punching sheet B (2), the upper end surface of the intermediate punching sheet B (2) is welded with multiple groups of intermediate punching sheets A (4), the upper end surface of the intermediate punching sheet A (4) is welded with another group of intermediate punching sheets B (2), the upper end of the other group of intermediate punching sheets B (2) is welded with another group of end face punching sheets (1), the outer surface of the intermediate punching sheet B (2) is provided with a second oil groove (10), the outer surface of the intermediate punching sheet A (4) is provided with a first oil groove (9), and the inner sides of the end face punching sheet (1), the intermediate punching sheet B (2) and the intermediate punching sheet A (4) are all provided in the tooth groove (6).

2. The oil-cooling motor stator core surface oil cooling circuit heat dissipation structure according to claim 1, characterized in that: The outer surface of the middle punch B (2) is provided with six groups of convex ribs (7) in an annular array, and the outer surface of the middle punch A (4) is provided with twelve groups of convex ribs (7) in an annular array.

3. The oil-cooling circuit heat dissipation structure for the stator core surface of an oil-cooled motor according to claim 1, characterized in that: The end face punching sheet (1) and the middle punching sheet B (2) are fixed by electric welding. An oil injection hole (3) is provided inside the end face punching sheet (1). The oil injection hole (3) is located inside the second oil groove (10) facing the outer surface of the middle punching sheet B (2).

4. The oil-cooling motor stator core surface oil cooling circuit heat dissipation structure according to claim 1, characterized in that: The oil passage groove 1 (9) and the oil passage groove 2 (10) between the intermediate punching piece B (2) and the intermediate punching piece A (4) are distributed in a staggered manner.

5. The oil-cooling motor stator core surface oil cooling circuit heat dissipation structure according to claim 1, characterized in that: The outer surfaces of the two groups of end face punching sheets (1) and the plurality of groups of intermediate punching sheets A (4) can form a Z-shaped cooling oil circuit (5) after being welded and fixed.

6. The oil-cooling motor stator core surface oil cooling circuit heat dissipation structure according to claim 2, characterized in that: The center positions of the convex ribs (7) on the outer sides of the end face punching sheet (1), the middle punching sheet B (2) and the middle punching sheet A (4) are all provided with welding seams (8).

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