Motor

Abstract

The utility model provides a motor comprising a front end cover and a rear end cover which are respectively arranged on two sides of a motor rotor assembly and a motor stator assembly. The motor rotor assembly and the motor stator assembly are sleeved with the cold water shell, and the two ends of the cold water shell are connected with the front end cover and the rear end cover respectively; the cold water shell and the end cover are separately arranged, the structural complexity is reduced, the development cost of a mold is further reduced, meanwhile, the separated end cover and the cold water shell can be correspondingly disassembled according to maintenance requirements, overall disassembly is not needed, and the maintenance cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a motor. Background Art

[0002] As a device that converts electrical energy into mechanical energy, motors are widely used in various industries, especially in industrial production. The application of various motor equipment is inseparable from motors. Therefore, the stable development of motors has also promoted the development of modern industry, promoted the process of mechanization and automation, and greatly improved work efficiency.

[0003] During the use of the motor, a large amount of heat will be generated during its operation. The accumulation of heat is one of the important factors affecting the performance of the motor. Based on this, various cooling methods are used in the existing motors during use, and water cooling is one of the most common cooling methods.

[0004] Existing water-cooled motors usually have an inner sleeve arranged outside the internal parts of the motor, a water groove is provided on the surface of the inner sleeve, and a casing integrated with the end cover is fixed outside the inner sleeve, and a water groove is also provided on the inner surface of the casing. In this way, when the casing and the inner sleeve are relatively fixed, a water flow channel is formed for passing water to dissipate heat from the motor. However, in the process of implementing this cooling method, on the one hand, the structure of the casing integrated with the end cover is complex, and when a mold is used to form it as one piece, the mold development cost is high. On the other hand, the water flow channel is formed by the inner sleeve and the casing integrated with the end cover. Therefore, when maintaining the motor, the inner sleeve and the casing integrated with the end cover need to be removed simultaneously, which increases the maintenance cost. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is that in the prior art, when the motor is water-cooled, the mold development cost is high and the maintenance cost is high.

[0006] To this end, the utility model provides a motor, a motor comprising: a motor rotor assembly and a motor stator assembly, and also comprising a cold water shell, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively arranged on both sides of the motor rotor assembly and the motor stator assembly; the cold water shell is sleeved on the outside of the motor rotor assembly and the motor stator assembly, and is detachably fixed to the front end cover and the rear end cover; a cooling water channel is arranged in the wall of the cold water shell, and the cooling water channel comprises a plurality of cold water troughs arranged side by side, and adjacent cold water troughs are connected by through grooves, and two through grooves on the same cold water trough are arranged at both ends of the cold water trough, and a water inlet nozzle and a water outlet nozzle are arranged on the cooling water channel.

[0007] Optionally, the cold water groove is arranged along the axial direction of the cold water shell, the through groove is arranged along the circumferential direction of the cold water shell, and two adjacent through grooves are arranged in a central symmetrical manner with the intersection of two diagonals of the cold water groove as the center.

[0008] Optionally, the cold water shell is provided with a sealing ring for sealing the cold water tank, the sealing ring is arranged on both sides of the cold water tank, the sealing ring is provided with holes, and the cold water tank is connected with the water inlet nozzle through the holes.

[0009] Optionally, the cross-sections of the through groove and the cold water groove are arc-shaped on both sides close to the inner and outer walls of the cold water shell and are concentric with the cold water shell.

[0010] Optionally, the cold water grooves on the cold water shell are connected with adjacent cold water grooves in sequence along a single circumferential direction of the cold water shell through through grooves starting from one of the cold water grooves until the last cold water groove in the single circumferential direction, and the cold water groove as the starting point and the last cold water groove are closed to each other in the opposite direction to the single circumferential direction;

[0011] The water inlet is connected to the cold water tank as a starting point;

[0012] The water outlet is connected to the last cold water groove in the single circumferential direction.

[0013] Optionally, the front cover and the rear cover are provided with fixing holes correspondingly; a screw is inserted into the side wall of the cold water shell, and the screw passes through the fixing hole.

[0014] Optionally, a plurality of the fixing holes are evenly arranged along the circumferential direction on the front cover and the rear cover.

[0015] Optionally, an arc-shaped protrusion is axially arranged on the side wall of the cold water shell, and the screw penetrates the arc-shaped protrusion along the axis direction of the cold water shell and passes through the fixing holes on the front cover and the rear cover.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The utility model provides a motor, which reduces the complexity of the structure by fixing the cold water shell and the end cover in a detachable manner, thereby reducing the development cost of the mold, and at the same time, the separated end cover and the cold water shell can be disassembled accordingly according to maintenance needs, without the need for overall disassembly, thereby reducing maintenance costs; a plurality of cold water grooves are arranged side by side on the cold water shell wall, and adjacent cold water grooves are connected by through grooves, and two through grooves on the same cold water groove are arranged at both ends of the cold water groove, thereby increasing the flow path of the cooling liquid and improving the heat absorption efficiency; by setting the cross-sections of the through grooves and the cold water grooves close to both sides of the inner and outer walls of the cold water shell to be arcs concentric with the cold water shell, the contact surface between the cooling liquid and the motor rotor assembly and the motor stator assembly is increased, further ensuring efficient heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the overall structure of a motor provided by an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A-direction sectional view;

[0021] Figure 3 for Figure 2 Schematic diagram of the interior of the intermediate cooling water shell;

[0022] Figure 4 for Figure 2 Schematic diagram of the structure of the intermediate cooling water shell;

[0023] Figure 5 for Figure 4 Cross-sectional view of the intermediate cooling water shell;

[0024] Description of reference numerals:

[0025] 1. Cold water shell; 12. Cold water trough; 13. Through groove; 14. Sealing ring; 15. Water inlet nozzle; 16. Water outlet nozzle; 2. Front cover; 3. Rear cover; 4. Fixing hole; 5. Arc-shaped protrusion; 6. Screw; 7. Motor rotor assembly; 8. Motor stator assembly. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1

[0029] like Figure 1-3 As shown, a motor includes a motor rotor assembly 7 and a motor stator assembly 8, and also includes: a cold water shell 1, a front end cover 2 and a rear end cover 3, wherein the front end cover 2 and the rear end cover 3 are respectively arranged on both sides of the motor rotor assembly 7 and the motor stator assembly 8; the cold water shell 1 is sleeved on the outside of the motor rotor assembly 7 and the motor stator assembly 8 and the two ends are detachably fixed to the front end cover 2 and the rear end cover 3 respectively, and a cooling water channel is arranged in the wall of the cold water shell 1, and the cooling water channel includes a plurality of cold water troughs 12 arranged side by side, and the number of the cold water troughs 12 can be three, four or more, and the adjacent cold water troughs 12 are connected by through grooves 13, and the two through grooves 13 on the same cold water trough 12 are arranged at both ends of the cold water trough 12, and the cooling water channel is provided with a water inlet nozzle 15 and a water outlet nozzle 16.

[0030] The cooling water enters the cooling water channel through the water inlet 15, and then flows to the water outlet 16 in one direction through the cooling water channel composed of the cold water tank 12 and the through groove 13, thereby cooling the motor. By separating the cold water shell 1 from the end cover, the complexity of the structure is reduced, thereby reducing the development cost of the mold. At the same time, the separated end cover and the cold water shell 1 can be disassembled according to maintenance needs, without the need for overall disassembly, thereby reducing maintenance costs.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that: Figures 3 to 5As shown, the cold water groove 12 is opened in the wall of the cold water shell 1 along the axial direction of the cold water shell 1; the through groove 13 is opened in the wall of the cold water shell 1 along the circumferential direction; two adjacent through grooves 13 are arranged symmetrically with the diagonal intersection of the cold water groove 12 between them as the center, so that the input cooling water can flow along the cold water groove 12. Since the diagonal intersection of the cold water groove 12 is arranged as the symmetrical center, the cooling water changes its flow direction after passing through the through groove 13, thereby realizing an S-shaped flow mode; the cross-sections of the through groove 13 and the cold water groove 12 are arc-shaped on both sides close to the inner and outer walls of the cold water shell 1, and are concentric with the cold water shell 1, thereby increasing the contact surface and improving the heat dissipation efficiency.

[0033] The cold water shell is formed by extrusion, thereby improving the qualified rate of the product and reducing the product development cost and mold maintenance cost.

[0034] As a changeable point, the cold water tank 12 in this embodiment can be set to be evenly arranged in the wall thickness of the cold water shell 1; the cold water tank 12 can be set to be non-uniform in size, that is, cold water tanks 12 of staggered sizes. By setting non-uniform sized cold water tanks 12, when cooling water enters through the water inlet nozzle, the cold water tank 12 that enters for the first time is set to be a cold water tank 12 with a smaller size than the adjacent cold water tank 12. At this time, the flow rate is fixed, and after passing through the turning groove 13, due to the sudden increase in size, according to the Bernoulli principle, the flow rate of the cooling water becomes lower. In the present invention, it can be changed according to actual conditions, and then according to the heat generation degree of different working areas of the motor, the heat dissipation intensity can be flexibly adjusted.

[0035] Sealing rings 14 are installed at both ends of the cold water shell 1. The sealing rings 14 are arranged on both sides of the cold water tank 12 to seal the cold water tank 12. The surface of the sealing ring 14 is provided with holes and communicates with the inside of the cold water tank 12 through the holes.

[0036] The sealing ring 14 is fixed to the two ends of the cold water shell 1 by friction welding to seal the side of the cold water tank 12. A hole can be opened on the sealing ring 14 and connected to the water inlet 15. The water inlet 15 can be fixed on the end cover, and the water outlet 16 can be arranged on the side of the cold water shell 1 and connected to the cold water tank 12. Therefore, when the motor is in use, cooling liquid can be introduced into the water inlet 15 from the outside, and flows through different cold water tanks 12 through the through groove 13 to absorb heat and cool the motor rotor assembly 7 and the motor stator assembly 8 and other components arranged inside the cold water shell 1, and then discharged from the water outlet 16, thereby forming a cycle to improve the heat dissipation efficiency.

[0037] In this embodiment, if Figure 3As shown, the cold water grooves 12 on the cold water shell 1 are connected with the adjacent cold water grooves 12 in a single circumferential direction of the cold water shell 1 through the through grooves 13 starting from one of the cold water grooves 12 in sequence, until the last cold water groove 12 in the single circumferential direction, and the cold water groove 12 as the starting point and the last cold water groove 12 are closed to each other in the opposite direction of the single circumferential direction; the water inlet 15 is connected with the cold water groove 12 as the starting point; the water outlet 16 is connected with the last cold water groove 12 in the single circumferential direction; the through grooves 13 are staggered along the axial direction of the cold water shell 1.

[0038] A plurality of axially penetrating cold water grooves 12 are uniformly provided in the side wall of the cold water shell 1 along the axial direction of the cold water shell 1, and one of the cold water grooves 12 is used as a starting point, and is sequentially connected with the adjacent cold water grooves 12 through the through grooves 13 along a single circumferential direction of the cold water shell 1. For example, in the counterclockwise direction, the cold water groove 12 as the starting point is connected with the cold water groove 12 adjacent to it in the counterclockwise direction through the through grooves 13, and the cold water groove 12 adjacent to the cold water groove 12 as the starting point in the counterclockwise direction is also connected with the cold water groove 12 adjacent to it in the counterclockwise direction through the through grooves 13, and so on, it is sequentially connected to the last cold water groove 12 in the counterclockwise direction, and the last cold water groove 12 is closed and not connected to the cold water groove 12 as the starting point in the clockwise direction, and the water inlet nozzle 15 is connected with the cold water groove 12 as the starting point, and the outlet The water nozzle 16 is connected to the last cold water trough 12; and the adjacent through grooves 13 are staggered along the axial direction of the cold water shell 1, and can be staggered at the two ends of the axial direction of the cold water shell 1 in sequence; at this time, when the cooling liquid enters from the water inlet nozzle 15, it will flow in the cold water shell 1 in a counterclockwise direction, and the through grooves 13 staggered at both ends of the cold water shell 1 will connect the adjacent cold water grooves 12 at the ends of the cold water groove 12, so that the cooling liquid will flow through the entire cold water groove 12 before flowing into the next cold water groove 12, and flow in one direction until it flows to the last cold water groove 12 and flows out from the water outlet 16. The S-shaped flow path of the cooling liquid will pass through the circumferential surface of the entire motor in a single direction, which not only ensures the circulation of the cooling liquid, but also extends the flow path of the cooling liquid, thereby increasing the heat absorption area and improving the heat absorption efficiency.

[0039] In this embodiment, if Figure 1 and Figure 4 As shown, corresponding fixing holes 4 are provided on the front cover 2 and the rear cover 3, and a screw 6 is inserted on the side wall of the cold water shell. The screw 6 passes through the front cover 2, the cold water shell 1 and the rear cover 3 in sequence and is threadedly connected with the front cover 2 and the rear cover 3. By rotating the screw 6, the front cover 2 and the rear cover 3 can be easily disassembled and fixed to the cold water shell 1.

[0040] In order to achieve stability between the cold water shell 1 and the front end cover 2 and the rear end cover 3, a plurality of fixing holes 4 are uniformly provided on the front end cover 2 and the rear end cover 3 along the circumferential direction; and a plurality of arc-shaped protrusions 5 along the axial direction of the cold water shell 1 can be correspondingly provided on the outer surface of the cold water shell 1, and the length of the arc-shaped protrusion 5 can be similar to the length of the cold water shell 1, thereby the screw 6 can first pass through the fixing hole 4 of the front end cover 2 and then axially penetrate the arc-shaped protrusion 5, and then pass through the fixing hole 4 on the rear end cover 3, and the screw 6 and the fixing hole 4 and the inside of the arc-shaped protrusion 5 can be threadedly connected, thereby fixing the front end cover 2, the cold water shell 1 and the rear end cover 3 to each other, thereby improving the stability between the front end cover 2, the cold water shell 1 and the rear end cover 3 during operation.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A motor, comprising: A motor rotor assembly (7) and a motor stator assembly (8), characterized in that: they also include a cold water shell (1), a front end cover (2) and a rear end cover (3), wherein the front end cover (2) and the rear end cover (3) are respectively arranged on both sides of the motor rotor assembly (7) and the motor stator assembly (8); the cold water shell (1) is sleeved on the outside of the motor rotor assembly (7) and the motor stator assembly (8), and is detachably fixed to the front end cover (2) and the rear end cover (3); a cooling water channel is arranged in the wall of the cold water shell (1), and the cooling water channel includes a plurality of cold water troughs (12) arranged side by side, and adjacent cold water troughs (12) are connected by through grooves (13), and the two through grooves (13) on the same cold water trough (12) are arranged at both ends of the cold water trough (12), and a water inlet nozzle (15) and a water outlet nozzle (16) are arranged on the cooling water channel.

2. The motor according to claim 1, characterized in that: The cold water groove (12) is arranged along the axial direction of the cold water shell (1), the through groove (13) is arranged along the circumferential direction of the cold water shell (1), and two adjacent through grooves (13) are arranged in a centrally symmetrical manner with the intersection of two diagonal lines of the cold water groove (12) as the center.

3. The motor according to claim 1, characterized in that: The cold water shell (1) is provided with a sealing ring (14) for sealing the cold water tank (12); the sealing ring (14) is arranged on both sides of the cold water tank (12); holes are provided on the sealing ring (14); and the cold water tank (12) is connected to the water inlet (15) through the holes.

4. The motor according to claim 2, characterized in that: The cross-sections of the through groove (13) and the cold water groove (12) are arc-shaped on both sides close to the inner and outer walls of the cold water shell (1), and are concentric with the cold water shell (1).

5. The motor according to claim 2, characterized in that: The cold water grooves (12) on the cold water shell (1) are connected with adjacent cold water grooves (12) in sequence along a single circumferential direction of the cold water shell (1) through through grooves (13) starting from one of the cold water grooves (12) until the last cold water groove (12) in the single circumferential direction, and the cold water groove (12) as the starting point and the last cold water groove (12) are closed to each other in the direction opposite to the single circumferential direction; The water inlet (15) is in communication with the cold water tank (12) serving as a starting point; The water outlet (16) is connected to the last cold water groove (12) in the single circumferential direction.

6. The motor according to claim 1, characterized in that: The front cover (2) and the rear cover (3) are provided with fixing holes (4) correspondingly; a screw rod (6) is inserted into the side wall of the cold water shell (1), and the screw rod (6) passes through the fixing holes.

7. The motor according to claim 6, characterized in that: A plurality of fixing holes (4) are evenly arranged along the circumference of the front end cover (2) and the rear end cover (3).

8. The motor according to claim 6, characterized in that: An arc-shaped protrusion (5) is axially arranged on the side wall of the cold water shell (1), and the screw (6) penetrates the arc-shaped protrusion (5) along the axial direction of the cold water shell (1) and passes through the fixing holes (4) on the front cover (2) and the rear cover (3).

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