Water-cooled stator shell with spiral flow guide cavity

Abstract

The utility model relates to the technical field of motor accessories, in particular to a water-cooling stator shell with a spiral flow guide cavity, which comprises an outer shell and an inner shell which are coaxially arranged, a sealing top seat is inserted into the top of the inner shell, and two groups of water-cooling pipes for liquid inlet and outlet are mounted on the outer wall of the outer shell. According to the utility model, the outer shell and the inner shell which are coaxial are arranged, so that a basic structural frame is provided for the whole; the fixing bolts are matched with the locking screw holes in the sealing top seat, so that the sealing top seat can be stably fixed, and the sealing performance of the internal structure is ensured; the spiral flow guide seat integrally formed on the outer wall of the inner shell and the spiral flow guide cavity on the spiral flow guide seat can guide cooling liquid to flow in the shell according to a spiral path, the contact area and the contact time of the cooling liquid and the inner shell are increased, the heat dissipation efficiency is improved, meanwhile, the outer wall of the spiral flow guide seat is tightly attached to the inner wall of the outer shell, and it is guaranteed that the cooling liquid cannot leak; therefore, the water-cooling stator shell with the spiral flow guide cavity has good heat dissipation performance and structural stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor accessories technical field, concretely is water -cooled stator casing with spiral flow guide cavity. BACKGROUND

[0002] With the rapid development of power electronic technology and the continuous improvement of motor performance requirements, water-cooled stator casing as an important part of motor cooling system, its design and performance optimization are increasingly valued. Water-cooled stator casing effectively absorbs and dissipates the heat generated during the operation of the motor by introducing cooling liquid, ensuring that the motor still maintains a suitable temperature under high load or long time operation. The traditional water-cooled stator casing often adopts simple straight channel design, the flow of cooling liquid in the channel is not uniform enough, leading to poor cooling effect in some areas, forming local hot spots. SUMMARY

[0003] The utility model discloses a water-cooled stator casing with spiral flow guide cavity to solve the problem of poor cooling effect of the existing water-cooled stator casing with straight channel flow in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] Water-cooled stator casing with spiral flow guide cavity, comprising coaxially arranged outer casing and inner casing, the top of the inner casing is inserted with a sealing top seat, the outer wall of the outer casing is installed with two groups of water-cooled pipes for liquid inlet and outlet;

[0006] The outer casing is provided with a plug-in slot for mounting the inner casing, and a plurality of groups of fixing bolts for fixing the sealing top seat are installed on the outer wall top of the outer casing;

[0007] The outer wall of the inner casing is installed with a spiral flow guide seat, the spiral flow guide seat is provided with a spiral flow guide cavity, the spiral flow guide seat and the outer wall of the inner casing are integrally formed, and the outer wall of the spiral flow guide seat is tightly combined with the inner wall of the outer casing;

[0008] The outer wall of the sealing top seat is installed with locking screw holes which are the same in number as the fixing bolts, correspond in position and are threadedly connected.

[0009] As a preferred, the inner wall of the outer casing is provided with an axial positioning protrusion.

[0010] As a preferred, the outer walls of the spiral flow guide seat and the sealing top seat are respectively provided with a first positioning groove and a second positioning groove which are adapted in size to the cross section of the positioning protrusion and are slidingly matched.

[0011] As a preferred, the inner annular wall of the sealing top seat is provided with an axial limiting groove.

[0012] Preferably, a limiting protrusion is formed on the outer wall of the inner shell and is matched with the cross section size of the limiting groove.

[0013] Preferably, the spiral flow guide base and the sealing top base are both made of sealing rubber base.

[0014] Preferably, a through hole is formed on the outer wall of the outer shell and is communicated with the top and bottom of the spiral flow guide cavity.

[0015] Preferably, a sealing flange is arranged on one end of the water cooling pipe and is connected with the outer shell and communicated with the through hole.

[0016] Compared with the prior art, the water cooling stator shell with spiral flow guide cavity has the following advantages:

[0017] 1. The water cooling stator shell with spiral flow guide cavity has a basic structure frame provided by the coaxial outer shell and the inner shell; the insertion slot on the outer shell is convenient for the installation and positioning of the inner shell; the locking screw hole on the fixing bolt and the sealing top base is matched to stably fix the sealing top base and ensure the sealing property of the internal structure; the two groups of water cooling pipes are convenient for the in and out of the cooling liquid and realize the water cooling function; the spiral flow guide base integrally formed on the outer wall of the inner shell and the spiral flow guide cavity thereon can guide the cooling liquid to flow in the shell according to the spiral path, increase the contact area and contact time of the cooling liquid and the inner shell, improve the heat dissipation efficiency, and the outer wall of the spiral flow guide base is tightly combined with the inner wall of the outer shell to ensure that the cooling liquid cannot leak, so that the water cooling stator shell with spiral flow guide cavity has good heat dissipation performance and structural stability.

[0018] 2. The water cooling stator shell with spiral flow guide cavity has the positioning protrusion arranged on the inner wall of the outer shell in the axial direction, and the first positioning slot and the second positioning slot matched with the cross section size of the positioning protrusion and slidably combined with the outer walls of the spiral flow guide base and the sealing top base, so that the precise positioning can be realized when the inner shell and the sealing top base are installed, and the assembly is facilitated; meanwhile, the structure of the sliding cooperation also plays a guiding role to a certain extent, ensures the accuracy of the installation positions of the inner shell and the sealing top base, and enhances the stability of the overall structure.

[0019] 3. The water cooling stator shell with spiral flow guide cavity has the spiral flow guide base and the sealing top base both made of sealing rubber base, and the rubber material itself has good elasticity and sealing property; on one hand, the rubber material can effectively prevent the leakage of the cooling liquid from the gaps between the spiral flow guide base and the outer shell and between the sealing top base and the outer shell and the inner shell, and ensure the sealing property of the water cooling system; on the other hand, the elasticity of the rubber material can buffer the influence of the vibration and other factors on the internal structure to a certain extent and prolong the service life of the product. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification, and are used to make further detailed explanation together with embodiments of the present application, but do not constitute limitation to the present application.

[0021] Fig. 1 It is a decomposition structural schematic view of the present application;

[0022] Fig. 2 It is a structural schematic view of the present application;

[0023] Fig. 3 It is a structural schematic view of the water-cooled pipe of the present application;

[0024] 10, outer shell; 11, plug-in slot; 12, positioning protrusion; 13, fixing bolt; 14, through hole;

[0025] 20, inner shell; 21, spiral flow guide base; 22, first positioning slot; 23, limiting protrusion; 24, spiral flow guide cavity;

[0026] 30, sealing top seat; 31, second positioning slot; 32, limiting groove; 33, locking screw hole;

[0027] 40, water-cooled pipe; 41, sealing flange. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application and the drawings of the specification. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "vertical", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] The water-cooled stator shell with spiral flow guide cavity is like Figs. 1-3As shown, including coaxially arranged and used to constitute the outer shell 10 and the inner shell 20 of the stator housing, the top of the inner shell 20 is inserted with a sealing top seat 30, the outer wall of the outer shell 10 is provided with two groups of water cooling pipes 40 for liquid inlet and outlet; The outer shell 10 is provided with a plug-in slot 11 for installing the inner shell 20, and the outer wall of the outer shell 10 is provided with a plurality of fixing bolts 13 for fixing the sealing top seat 30; The outer wall of the inner shell 20 is provided with a spiral flow guide seat 21, the spiral flow guide seat 21 is provided with a spiral flow guide cavity 24, the spiral flow guide seat 21 and the outer wall of the inner shell 20 are integrally formed, and the outer wall of the spiral flow guide seat 21 is tightly combined with the inner wall of the outer shell 10; The outer wall of the sealing top seat 30 is provided with a locking screw hole 33 which is same in number and corresponding in position with the fixing bolt 13 and is threadedly connected, the coaxial outer shell 10 and the inner shell 20 are provided, which provides a basic structural framework for the whole; The plug-in slot 11 on the outer shell 10 facilitates the installation and positioning of the inner shell 20; The fixing bolt 13 and the locking screw hole 33 on the sealing top seat 30 cooperate to stably fix the sealing top seat 30, ensuring the sealing of the internal structure. Two groups of water cooling pipes 40 facilitate the cooling liquid to enter and exit, realizing the water cooling function. The spiral flow guide seat 21 integrally formed on the outer wall of the inner shell 20 and the spiral flow guide cavity 24 thereon can guide the cooling liquid to flow in the shell according to the spiral path, increase the contact area and contact time of the cooling liquid with the inner shell 20, and improve the heat dissipation efficiency, and meanwhile, the outer wall of the spiral flow guide seat 21 is tightly combined with the inner wall of the outer shell 10, ensuring that the cooling liquid will not leak, so that the water-cooled stator housing with the spiral flow guide cavity has good heat dissipation performance and structural stability.

[0031] Further, the inner wall of the outer shell 10 is provided with an axial positioning protrusion 12, the outer wall of the spiral flow guide seat 21 and the sealing top seat 30 is respectively provided with a first positioning groove 22 and a second positioning groove 31 which are adapted in cross-sectional size to the positioning protrusion 12 and are slidingly matched, so that during the installation of the inner shell 20 and the sealing top seat 30, accurate positioning can be realized, facilitating assembly. At the same time, the slidingly matched structure also plays a guiding role to a certain extent, ensuring the accuracy of the installation position of the inner shell 20 and the sealing top seat 30, and enhancing the stability of the overall structure.

[0032] Specifically, the inner ring wall of the sealing top seat 30 is provided with an axial limiting groove 32, and the outer wall of the inner shell 20 is provided with a limiting protrusion 23 which is adapted in cross-sectional size to the limiting groove 32 and is slidingly matched, limiting the relative position between the inner shell 20 and the sealing top seat 30, preventing the inner shell 20 from shaking or deviating in the radial direction, improving the reliability of the internal structure of the whole water-cooled stator housing, ensuring the cooperation precision between the components, and helping to maintain the normal operation of the water cooling system.

[0033] It is worth mentioning that the spiral flow guide seat 21 and the sealing top seat 30 are both made of sealing rubber seat, which has good elasticity and sealing property. On the one hand, it can effectively prevent the leakage of cooling liquid from the gap between the spiral flow guide seat 21 and the outer shell 10 and the gap between the sealing top seat 30 and the outer shell 10 and the inner shell 20, ensuring the sealing property of the water cooling system; on the other hand, the elasticity of the rubber can buffer the influence of vibration and other factors on the internal structure to some extent, prolonging the service life of the product.

[0034] In addition, a through hole 14 is formed in the outer wall of the outer shell 10 and communicates with the top and bottom of the spiral flow guide cavity 24, and one end of the water cooling pipe 40 is provided with a sealing flange 41 connected with the outer shell 10 and communicating with the through hole 14, which ensures that the cooling liquid can smoothly flow into and out of the spiral flow guide cavity 24, forming a complete water cooling circulation loop. The sealing flange 41 not only ensures the sealing connection between the water cooling pipe 40 and the outer shell 10, but also facilitates the installation and disassembly of the water cooling pipe 40, making it convenient to maintain and overhaul the water cooling system.

[0035] Working principle of the water cooling stator shell with spiral flow guide cavity:

[0036] First, install the inner shell 20 with the spiral flow guide seat 21 into the outer shell 10, and use the positioning protrusion 12 on the inner wall of the outer shell 10 to slide with the first positioning groove 22 on the outer wall of the spiral flow guide seat 21 to complete the preliminary positioning of the inner shell 20, and the outer wall of the spiral flow guide seat 21 is tightly attached to the inner wall of the outer shell 10; then, cover the sealing top seat 30 on the top of the inner shell 20, and use the second positioning groove 31 on the outer wall of the sealing top seat 30 to cooperate with the positioning protrusion 12, as well as the limiting recess 32 on the inner ring wall of the sealing top seat 30 and the limiting protrusion 23 on the outer wall of the inner shell 20 to slide, to ensure that the sealing top seat 30 is installed in place; then, use the fixing bolt 13 to pass through the top of the outer shell 10 and be screwed with the locking screw hole 33 on the sealing top seat 30 to fix the sealing top seat 30;

[0037] Then connect the water cooling pipe 40, and make the water cooling pipe 40 communicate with the through hole 14 on the outer shell 10 through the sealing flange 41, so that the cooling liquid can flow into the spiral flow guide cavity 24 through the water cooling pipe 40, flow along the spiral path in the spiral flow guide cavity, and then flow out from the other end of the spiral flow guide cavity 24 through the through hole 14 and the water cooling pipe 40 after taking away the heat of the inner shell 20, forming a circulating water cooling heat dissipation to ensure the normal operating temperature of the equipment applied with the water cooling stator shell.

[0038] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A water-cooled stator housing with helical flow channels, characterized in that: It comprises an outer shell (10) and an inner shell (20) arranged coaxially, a sealing top seat (30) is inserted into the top of the inner shell (20), two groups of water-cooled pipes (40) for liquid inlet and outlet are installed on the outer wall of the outer shell (10); A plug-in slot (11) for installing the inner shell (20) is formed in the outer shell (10), and a plurality of fixing bolts (13) for fixing the sealing top seat (30) are installed on the outer wall of the top of the outer shell (10); A spiral flow guide seat (21) is installed on the outer wall of the inner shell (20), a spiral flow guide cavity (24) is formed in the spiral flow guide seat (21), the spiral flow guide seat (21) is integrally formed with the outer wall of the inner shell (20), and the outer wall of the spiral flow guide seat (21) is tightly attached to the inner wall of the outer shell (10); A plurality of locking screw holes (33) are formed in the outer wall of the sealing top seat (30), the locking screw holes (33) are in the same number as the fixing bolts (13), correspond to the positions of the fixing bolts (13), and are in threaded connection with the fixing bolts (13).

2. The water-cooled stator housing with helical flow channels of claim 1, characterized in that: A positioning protrusion (12) is arranged on the inner wall of the outer shell (10) in the axial direction.

3. The water-cooled stator housing with helical flow channels of claim 2, characterized in that: First positioning grooves (22) and second positioning grooves (31) are respectively formed in the outer walls of the spiral flow guide seat (21) and the sealing top seat (30), and the first positioning grooves (22) and the second positioning grooves (31) are in sliding fit with the cross-sectional dimension of the positioning protrusion (12).

4. The water-cooled stator housing with helical flow channels of claim 1, wherein: A limiting recess (32) is formed in the inner annular wall of the sealing top seat (30) in the axial direction.

5. The water-cooled stator housing with helical flow channels of claim 4, wherein: A limiting protrusion (23) is formed in the outer wall of the inner shell (20) and is in sliding fit with the cross-sectional dimension of the limiting recess (32).

6. The water-cooled stator housing with helical flow channels of claim 1, wherein: The spiral flow guide seat (21) and the sealing top seat (30) are both made of a sealing rubber seat.

7. The water-cooled stator housing with helical flow channels of claim 1, wherein: A through hole (14) is formed in the outer wall of the outer shell (10) and is in communication with the top and bottom of the spiral flow guide cavity (24).

8. The water-cooled stator housing with helical spiral ducts of claim 7, characterized in that: A sealing flange (41) is installed at one end of the water-cooled pipe (40) and is in connection with the outer shell (10) and in communication with the through hole (14).

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