Water-cooled motor shell

Abstract

The utility model provides a water-cooled motor casing, which comprises a casing body provided with a water inlet pipe and a water outlet pipe in sequence; the cooling part is arranged in the shell, the cooling part comprises a protective cover, a cooling cover and a supporting ring arranged between the protective cover and the cooling cover, a cooling cavity is formed between the protective cover and the cooling cover, and the water inlet pipe and the water outlet pipe are communicated with the cooling cavity; and a circular spacing bar wound on the cooling cover is arranged in the cooling cavity. According to the water-cooled motor casing provided by the utility model, when the motor is overheated in high-load operation, cooling liquid can be introduced into the cooling cavity through the water inlet pipe, the cooling liquid can flow along the flow channels to cool the motor at the axis of the cooling cover, and the circular spacing bars are wound on the cooling cover, so that the distribution area of the flow channels is enlarged, and the cooling effect is improved. Therefore, the cooling effect on the motor is improved, and the overheating phenomenon of the motor is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, specifically related to a water -cooled motor shell. BACKGROUND

[0002] The motor is composed of stator and rotor, and the rotor rotates at the axle center of the stator to drive production or transportation equipment to work.

[0003] In high load work, the actual load of the motor is greater than the rated load, which will cause the internal temperature of the motor to rise sharply, and long-time overload operation is easy to cause damage in the motor, so it is necessary to set a cooling device on the motor, and the common cooling method is to cast multiple water flow channels on the shell to reduce the temperature in the motor, but the shell produced by casting has a thick outer wall, and the heat exchange contact area of the water flow channel is limited, which will cause the motor to stop for a period of time after running for a long time, and the motor can continue to move only after reaching the appropriate temperature, thereby affecting the operation efficiency of the motor. SUMMARY

[0004] The utility model aims at solving the above problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model can be realized through the following technical schemes: a water-cooled motor shell, comprising:

[0006] The shell is provided with a water inlet pipe and a water outlet pipe in sequence;

[0007] The cooling piece is arranged in the shell, and the cooling piece comprises a protective cover, a cooling cover and a supporting ring arranged between the protective cover and the cooling cover, a cooling cavity is arranged between the protective cover and the cooling cover, and the water inlet pipe and the water outlet pipe are respectively connected with the cooling cavity;

[0008] The cooling cavity is provided with a circular spacing strip wound on the cooling cover, and the circular spacing strip cooperates with the protective cover and the cooling cover to form a flow channel.

[0009] In the embodiment of the utility model, the circular spacing strip is spirally wound on the cooling cover.

[0010] In the embodiment of the utility model, the protective cover is provided with a water inlet and a water outlet, the water inlet cooperates with the water inlet pipe, and the water outlet cooperates with the water outlet pipe.

[0011] In the embodiment of the utility model, the protective cover is provided with a supporting block, the supporting block is provided with an inclined surface, and the inclined surface is attached to the supporting ring.

[0012] The utility model embodiment, the support ring has the polishing part and the arc part, the polishing part is flush with the upper end surface of the protective cover, and the arc part is attached to the inclined surface.

[0013] The utility model embodiment, the transverse section of the support block is triangular.

[0014] The utility model embodiment, the support block is at least provided eight, and multiple support blocks are evenly distributed to the protective cover

[0015] The utility model embodiment, the protective cover and the cooling cover are provided with the weld joint part.

[0016] The utility model embodiment, the weld joint part has first lamination, second lamination and third lamination, and the first lamination is connected through the second lamination with the third lamination.

[0017] The utility model embodiment, the shell is provided with the wire plug connector, and the protective cover and the cooling cover are all provided with the installation hole matched with the wire plug connector.

[0018] Compared with the prior art, the application has the following advantages: when the motor is in high load operation and overheating, the cooling liquid can be introduced into the cooling cavity through the water inlet pipe, and the cooling liquid flows along the flow channel to cool the motor at the shaft center of the cooling cover. Since the circular spacing strip is wound on the cooling cover, the distribution area of the flow channel is increased, thereby improving the cooling effect of the motor and reducing the overheating phenomenon of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic diagram;

[0020] Figure 2 It is the structure schematic diagram of internal cooling piece;

[0021] Figure 3 It is the internal part structure schematic diagram of partial section of protective cover;

[0022] Figure 4 It is Figure 3 The enlarged view of A part in it;

[0023] Figure 5 It is the single independent body diagram and the unfolded plane view of protective cover.

[0024] Explanation of reference signs:

[0025] 1, shell; 11, wire plug; 12, water inlet pipe; 13, water outlet pipe; 2, cooling piece; 21, protective cover; 211, mounting hole; 212, water inlet; 213, water outlet; 214, support block; 2141, inclined surface; 216, cooling cavity; 217, weld part; 2171, first fitting surface; 2172, second fitting surface; 2173, third fitting surface; 22, support ring; 221, polishing part; 222, arc-shaped part; 23, cooling cover; 24, circular spacer; 241, flow channel; 25, mounting channel. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the utility model and in combination with the drawings, the technical scheme of the utility model is further described.

[0027] As Figures 1-5 shown, a water-cooled motor shell, comprising:

[0028] Shell 1, shell 1 is sequentially provided with water inlet pipe 12 and water outlet pipe 13;

[0029] Cooling piece 2, cooling piece 2 is arranged in shell 1, and cooling piece 2 includes protective cover 21, cooling cover 23 and support ring 22 arranged between protective cover 21 and cooling cover 23, cooling cavity 216 is arranged between protective cover 21 and cooling cover 23, water inlet pipe 12 and water outlet pipe 13 are communicated with cooling cavity 216 respectively;

[0030] Among them, the cooling cavity 216 is provided with the circular spacer 24 wound on the cooling cover 23, and the circular spacer 24 cooperates with the protective cover 21 and the cooling cover 23 to form the flow channel 241.

[0031] Specifically, the parts in the motor are installed into the cooling cover 23, a large amount of heat is generated in the process of motor operation, at this time, the cooling liquid is introduced into the cooling cavity 216 through the water inlet pipe 12, the cooling liquid flows along the flow channel 241 by the blocking of the circular spacer 24, so that the cooling liquid fully contacts with the cooling cover 23, so that the cooling liquid exchanges heat to take away the heat generated in the process of motor operation, thereby reducing the phenomenon of overheating of the motor, further, the circular spacer 24 is a small diameter cylindrical steel bar.

[0032] As a further provided embodiment of the utility model, the circular spacer 24 is spirally wound on the cooling cover 23, the circular spacer 24 is distributed on the outer wall of the cooling cover 23, that is, located in the cooling cavity 216, so that the flow channel 241 is uniformly distributed in the cooling cavity 216, the contact area and heat exchange effect of the flow channel 241 are improved.

[0033] As a further provided embodiment of the utility model, the water inlet 212 and the water outlet 213 are respectively arranged on the protective cover 21, the water inlet 212 is matched with the water inlet pipe 12, and the water outlet 213 is matched with the water outlet pipe 13, the water inlet 212 is arranged at the position close to the wire plug-in connector 11, that is, the top of the protective cover 21, and the water outlet 213 is arranged at the bottom of the protective cover 21, so that the cooling liquid can be cooled in advance at the wire plug-in connector 11 when the motor is in high load operation, and the winding end of the motor is cooled. Figure 3

[0034] As a further provided embodiment of the utility model, the support block 214 is arranged on the protective cover 21, the inclined surface 2141 is arranged on the support block 214, the inclined surface 2141 is matched with the support ring 22, the support block 214 is arranged between the cooling cover 23 and the protective cover 21, and a certain supporting effect is achieved, and when the support ring 22 is installed between the cooling cover 23 and the protective cover 21, the inclined surface 2141 is used for limiting, so that the phenomenon that the support ring 22 is excessively pressed into the cooling groove and affects the sealing performance during installation is prevented, and further, the support block 214 can also be welded and fixed to the outer wall of the cooling cover 23, so as to limit and support the support ring 22.

[0035] As a further provided embodiment of the utility model, the support ring 22 has the polishing part 221 and the arc-shaped part 222, the polishing part 221 is flush with the upper end surface of the protective cover 21, and the arc-shaped part 222 is matched with the inclined surface 2141, the support ring 22 is bent into a circular shape from a small cylinder, and is welded at the joint, so as to form the support ring 22, the support ring 22 is welded with the protective cover 21 and the cooling cover 23 respectively, and the convex part is polished to form the polishing part 221.

[0036] As a further provided embodiment of the utility model, the transverse section of the support block 214 is triangular, the triangular structure improves the supporting effect of the support ring 22, the position of the support ring 22 is limited, and the welding effect of the support ring 22 is improved.

[0037] As a further provided embodiment of the utility model, the support block 214 is arranged at least eight, and the plurality of support blocks 214 are uniformly distributed on the protective cover 21 (as shown in the figure), the plurality of support blocks 214 improve the supporting effect of the support ring 22 during welding, and the phenomenon that the support ring 22 deviates during welding is reduced. Figure 5

[0038] ​​As a further provided embodiment of the utility model, the welding seam part 217 is arranged on the protective cover 21 and the cooling cover 23, the welding seam part 217 has a first lamination surface 2171, a second lamination surface 2172 and a third lamination surface 2173, the first lamination surface 2171 is connected with the second lamination surface 2172 and the third lamination surface 2173, the shell 1, the protective cover 21 and the cooling cover 23 are all made of stainless steel plate material and are formed by roll forming and laser welding, the first lamination surface 2171, the second lamination surface 2172 and the third lamination surface 2173 are connected to form a triangular part, when the stainless steel plate is roll formed, the triangular part is formed to splice to form a continuous bending welding line part, the laser gun is welded along the bending welding line part, so that the protective cover 21 and the cooling cover 23 are in a cylindrical shape, the bending welding part increases the welding area and improves the firmness of the protective cover 21 and the cooling cover 23. Moreover, the traditional water-cooled motor is directly formed by using aluminum alloy to form a cooling flow channel, and the parts of the application are mostly made of stainless steel material, in addition to increasing the overall strength of the motor, the stainless steel material also has the characteristics of corrosion resistance, high temperature resistance, wear resistance and the like, and can remain stable in a humid and corrosive environment, prolonging the service life. At the same time, the surface of the stainless steel part is smoother than the surface of the aluminum material, and is not easy to attach bacteria and dirt, is easy to clean and disinfect, and is suitable for more fields.

[0039] As a further provided embodiment of the utility model, the shaft center of the shell 1 is provided with a mounting channel 25, and the parts inside the motor are mounted into the mounting channel 25, that is, the shaft center of the cooling cover 23, so as to improve the cooling effect of the motor.

[0040] As a further provided embodiment of the utility model, the shell 1 is provided with a wire plug 11, the protective cover 21 and the cooling cover 23 are both provided with mounting holes 211 matched with the wire plug 11, and the wire plug 11 is connected with the lead wire of the wire winding, so as to connect the external power supply to supply power to the parts in the cooling cover 23.

[0041] Working principle:

[0042] (1), the stainless steel plate of the cooling cover 23, the protective cover 21 and the shell 1 is roll formed to obtain a basically circular open cylindrical semi-finished product;

[0043] (2), the welding seam of the cooling cover 23 arranged in the innermost position is laser welded to obtain a cylindrical cooling cover 23;

[0044] (3), the circular interval strip 24 is spirally wound on the outer wall of the cooling cover 23, and the circular interval strip 24 is pre-fixed in the cooling cover 23 by laser gun or arc welding during the winding process, and after the spiral shape is completely formed, the laser trimming can be performed on the lamination part of the circular interval strip 24 and the cooling cover 23;

[0045] (4), re-winding a circular spacer strip 24 on the outer wall of the cooling cover 23 to obtain a support ring 22, and the support ring 22 is attached to the inclined surface 2141 of the support block 214 (and the upper surface of the support ring 22 is slightly lower than the end surface of the cooling cover 23 by 1-2mm), and then the support ring 22 is spot welded;

[0046] (5), the protective cover 21 is sleeved on the outer surface of the spiral spacer strip 24, and the opening of the protective cover 21 is aligned with the weld of the cooling cover 23 and is laser welded, so that the protective cover 21 is obtained in a cylindrical shape;

[0047] (6), the shell 1 is sleeved on the outer surface of the protective cover 21, and the opening of the shell 1 is aligned with the weld of the protective cover 21 and is laser welded, so that the shell 1 is obtained in a cylindrical shape;

[0048] (7), the wire plug 11, the water inlet pipe 12 and the water outlet pipe 13 are aligned with the respective hole positions, and then laser welding is performed;

[0049] (8), the upper and lower end surfaces of the two support rings 22 are welded in a complete circle by using the arc welding method, so that the upper and lower end surfaces of the cooling cover 23, the protective cover 21 and the shell 1 are welded and fixed, and the cooling cavity 216 is formed, and the circular spacer strip 24 cooperates with the protective cover 21 and the cooling cover 23 to form the flow channel 241; and after welding, the welding bead is naturally cooled, and the height of the welding bead is slightly higher than the two end surfaces of the shell 1, and the welding bead and the outer wall of the shell 1 and the inner wall of the cooling cover 23 are polished and cut flat by a machining center or a machine tool, to obtain a finished product.

[0050] (9), the flow channel 241 is subjected to air tightness detection to ensure the sealing of the cooling cavity 216.

[0051] The above technical scheme of the present application provides a solution significantly different from the prior art, and the parts not involved in the technical scheme of the present application are the same as or can be realized by the prior art, and will not be described again.

[0052] The technical scheme in the above embodiment has clearly and completely described the content of the present application. Obviously, the described embodiment is only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A water-cooled electric machine housing, characterized in that, The utility model relates to a shell, water inlet pipe and water outlet pipe are sequentially arranged on the shell, cooling piece is arranged in the shell, and the cooling piece includes protective cover, cooling cover and support ring arranged between the protective cover and cooling cover, cooling cavity is arranged between the protective cover and cooling cover, and the water inlet pipe and water outlet pipe are communicated with the cooling cavity respectively. The circular spacing strip is spirally wound on the cooling cover. The protective cover is provided with water inlet and water outlet respectively, the water inlet is matched with the water inlet pipe, and the water outlet is matched with the water outlet pipe. The support ring has polishing part and arc part, the polishing part is flush with the upper end surface of the protective cover, and the arc part is matched with the inclined surface.

2. A water-cooled electric machine housing according to claim 1, characterized in that The support block is provided with at least eight, and a plurality of support blocks are evenly distributed on the protective cover.

3. A water-cooled electric machine housing according to claim 1, characterized in that The protective cover and the cooling cover are provided with welding seam part.

4. A water-cooled electric machine housing according to claim 3, characterized in that The welding seam part has first fitting surface, second fitting surface and third fitting surface, the first fitting surface is connected with the second fitting surface and the third fitting surface through the second fitting surface.

5. A water-cooled electric machine housing according to claim 4, characterized in that The shell is provided with wire plug, and the protective cover and the cooling cover are provided with mounting hole matched with the wire plug.

6. A water-cooled electric machine housing according to claim 4, characterized in that ​ 7. A water-cooled electric machine housing according to claim 4, characterized in that ​ 8. A water-cooled electric machine housing according to claim 1, wherein ​ 9. A water-cooled electric machine housing according to claim 8, characterized in that ​ 10. A water-cooled electric machine housing according to claim 1, wherein ​

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