Motor heat exchange cooling water channel

Abstract

The utility model relates to the technical field of motor cooling water channels, in particular to a motor heat exchange cooling water channel which comprises an inner sleeve and an outer sleeve which are combined, a stop block is arranged on the outer wall of the inner sleeve or the inner wall of the outer sleeve in the axial direction, water channel ribs are arranged on the side portion of the stop block in the circumferential direction, and one end of each water channel rib is connected with the stop block. The other ends of the water channel ribs are not connected with the check block, water passing gaps are reserved between the water channel ribs and the check block, at least two annular water channels which are communicated in series are formed through the water channel ribs, when the number of the water channel ribs is two or more, the water passing gaps between the adjacent water channel ribs are located on the two circumferential sides of the check block respectively, and the axial positions of the water channel ribs are adjustable. The axial widths of the annular water channels are equal or unequal, and the circumferential width of the water passing gap is adjustable. According to the scheme, the space utilization rate of the cooling water channel can be increased, the manufacturing difficulty and manufacturing cost of the cooling water channel are reduced, and the parameter selection flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor cooling water channels, and specifically provides a motor heat exchange cooling water channel. Background Art

[0002] At present, the design of motors is gradually tending towards high power, high efficiency, high power, small size, low cost, etc. In order to achieve these goals, water (liquid) cooling bases are increasingly widely used in motor cooling structures. Water cooling base cooling is an indirect cooling method for motors, which efficiently transfers the heat generated by the effective components of the motor (such as the stator core, windings, etc.) to the cooling medium. Motors using water cooling bases have the advantages of low noise, high efficiency, and high protection level.

[0003] The existing waterways are mainly Figure 1 The spiral waterway form shown in Figure 2 The return (circuitous) water channel form shown is selected based on factors such as the position of the motor's water inlet and outlet interfaces, axial length, pressure loss (pressure drop) of the cooling medium flowing in the water channel, and manufacturing cost. These two water channel structural forms have their own advantages and disadvantages and are widely used in motor design.

[0004] Spiral waterway (such as Figure 3 As shown in the figure, it is mainly composed of an inner sleeve 1, a spiral waterway rib 3, and an outer sleeve 2. The spiral waterway rib is a continuous spiral line, which is distributed between the inner sleeve and the outer sleeve along the motor axis. A continuous waterway is formed between the waterway ribs with adjacent pitches. The water inlet and the water outlet are arranged at the beginning and end of the spiral waterway respectively. Figure 4 As shown in the figure, it is mainly composed of an inner sleeve 1, a return water channel rib 3, and an outer sleeve 2. The return water channel rib is a steel bar of similar length, which is welded to the inner sleeve along the axial direction of the motor. Adjacent return water channel ribs are welded staggered, and the water inlet and outlet can be arranged at the same end.

[0005] In the prior art, the spiral waterway ribs are mainly formed on the outer surface of the inner sleeve by turning and milling, and then assembled with the outer sleeve to form a closed spiral waterway. The return waterway uses a return waterway inner cylinder with welded steel bars on the inner sleeve, and then assembled with the outer sleeve to form a closed return waterway. The spiral waterway and the return waterway mainly have the following problems:

[0006] 1. Due to the limitation of the water channel rib turning process, the number of choices for the pitch of the spiral water channel is limited, resulting in a lack of flexibility in the design; 2. The turning of the spiral water channel requires a full circle of processing space at the beginning and end for starting and retracting the tool during processing. The locations of the inlet and outlet are distributed on both sides of the motor, forming low flow rate, stagnant areas and reflux areas at both ends of the water cooling base. The heat exchange effect of these areas is poor, resulting in uneven cooling of the motor and local temperature increase. It is also a waste of the heat dissipation surface and axial length of the motor. Turning the spiral water channel Figure 5As shown, a is the inlet and b is the outlet; 3. When the spiral water channel ribs are processed by milling technology, the processing cost of the water channel ribs will increase significantly, such as Figure 6 As shown in the figure, due to the inherent characteristics of the spiral line of the spiral water channel, there must be areas at the beginning and end where an effective water channel cannot be formed or areas with low flow velocity in the water channel, which will also cause waste of the heat dissipation surface. Point a is the inlet and point b is the outlet; 4. Figure 7 As shown, the return water channel adopts an inner sleeve welded steel bar, the number of return water channel ribs is large, the welding amount is large, and the loss of mechanical strength of the inner cylinder of the motor is large. At the same time, due to the large number of welded water channel ribs, the positioning of the water channel ribs is complicated, the welding time is long, the efficiency is low, and the cost is high.

[0007] In summary, how to design a motor heat exchange cooling water channel with low manufacturing cost, high processing efficiency and improved cooling water channel space utilization is a problem that needs to be solved urgently. Utility Model Content

[0008] In order to solve the above problems, the utility model provides a motor heat exchange cooling water channel, which can improve processing efficiency, increase space utilization of the cooling water channel and reduce costs.

[0009] The utility model provides a motor heat exchange cooling water channel, comprising a combined inner sleeve and an outer sleeve, wherein a stopper is axially arranged on the outer wall of the inner sleeve or the inner wall of the outer sleeve, and a water channel rib is circumferentially arranged on the side of the stopper; one end of the water channel rib is connected to the stopper, and the other end of the water channel rib is not connected to the stopper and a water-passing gap is left between the water channel rib and the stopper; at least two annular water channels connected in series are formed by the water channel rib, and when there are two or more water channel ribs, the water-passing gaps between adjacent water channel ribs are respectively located on both sides of the circumference of the stopper; the axial position of the water channel rib is adjustable, and the axial widths between the annular water channels are equal or unequal.

[0010] Furthermore, the annular water channels located at both axial ends of the serially connected annular water channels are respectively a starting circle and an ending circle, the water inlet and the water outlet are respectively arranged on the starting circle and the ending circle, and the water inlet and the water outlet are both arranged close to the block.

[0011] Furthermore, the stopper is welded to the inner sleeve or the outer sleeve.

[0012] Furthermore, the water channel ribs are arranged on the inner sleeve or the outer sleeve by turning.

[0013] Furthermore, the water-passing gap is opened on the water channel rib by milling.

[0014] Furthermore, the block, the water channel ribs, the water inlet and the water outlet are all arranged on the outer wall of the inner sleeve.

[0015] Furthermore, the circumferential width of the water gap is adjustable.

[0016] Furthermore, an adjustment platform is provided on the stopper extending toward the water-passing gap, and the circumferential width of the water-passing gap can be adjusted by adjusting the circumferential width of the adjustment platform.

[0017] Furthermore, after the water channel ribs, baffles, water gaps, water inlets and outlets are processed, the outer sleeve is placed on the inner sleeve, and the split inner sleeve and outer sleeve are fixed into a whole by welding or interference fit.

[0018] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0019] 1. Compared with the existing spiral water channel structure, the effective part of the annular water channel of this scheme almost occupies the entire axial space, and there is no low flow rate area or dead water area. At the same time, by changing the arrangement of the block and the like, the water flow direction can be flexibly adjusted, and the position of the water inlet and outlet can be flexibly adjusted. The spacing of the water channel ribs can be adjusted arbitrarily, which can reduce the manufacturing cost and improve the flexibility of the manufacturing process. It can be processed by turning, milling and welding. Compared with pure milling and spiral turning, the processing cost has been significantly reduced, and at the same time, the problem of long processing space for starting and retracting the spiral water channel has been solved.

[0020] 2. Compared with the existing welded structure return water channel, the present solution has significantly reduced number of water channel weld ribs, and only requires welding blocks. The welding amount is reduced, which can improve the overall strength of the machine base. No additional welding positioning tooling is required, thereby improving manufacturing production efficiency and reducing costs. The number of water channel returns is small, which is very beneficial to reducing flow resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a spiral waterway in the prior art;

[0022] Figure 2 It is a schematic diagram of the structure of the return waterway in the prior art;

[0023] Figure 3 It is a structural schematic diagram of a spiral waterway in the prior art;

[0024] Figure 4 It is a schematic diagram of the structure of the return waterway in the prior art;

[0025] Figure 5 It is a structural schematic diagram of a spiral water channel turned in the prior art;

[0026] Figure 6 It is a schematic diagram of the structure of a spiral water channel processed by milling technology in the prior art;

[0027] Figure 7 It is a schematic diagram of the structure of the return waterway of the inner sleeve welded steel bar in the prior art;

[0028] Figure 8 The structure of the cooling water channel provided in the first embodiment of the utility model is shown in FIG. Figure 1 ;

[0029] Fig. 9 The structure of the cooling water channel provided in the first embodiment of the utility model is shown in FIG. Figure 2 ;

[0030] Fig.10 It is a schematic diagram of the manufacturing process of the cooling water channel provided according to the first embodiment of the utility model;

[0031] Fig.11 It is a structural schematic diagram of a cooling water channel provided according to the second embodiment of the utility model.

[0032] The reference numerals therein include: inner sleeve 1, outer sleeve 2, water channel rib 3, block 4, water passage gap 5, annular water channel 6, starting circle 7, ending circle 8, water inlet 9, water outlet 10, and adjustment platform 11. DETAILED DESCRIPTION

[0033] In the following, reference will be made to the Figure 8-11 Describe the embodiment of the utility model. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 8-11 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation on the present invention. Embodiment 1

[0035] A motor heat exchange cooling water channel comprises a combined inner sleeve 1 and an outer sleeve 2, a stopper 4 is axially arranged on the outer wall of the inner sleeve 1 or the inner wall of the outer sleeve 2, a water channel rib 3 is circumferentially arranged on the side of the stopper 4, one end of the water channel rib 3 is connected to the stopper 4, and the other end of the water channel rib 3 is not connected to the stopper 4, a water-passing gap 5 is left between the other end of the water channel rib 3 and the stopper 4, at least two annular water channels 6 connected in series are formed by the water channel rib 3, when there are two or more water channel ribs 3, the water-passing gaps 5 between adjacent water channel ribs 3 are respectively located on both sides of the circumference of the stopper 4, the annular water channels 6 located at the two axial ends of the annular water channels 6 connected in series are a starting circle 7 and an ending circle 8, a water inlet 9 and a water outlet 10 are respectively arranged on the starting circle 7 and the ending circle 8, and the water inlet 9 and the water outlet 10 are both arranged close to the stopper 4.

[0036] Zhou Xiangru Fig. 9 The direction shown by M in the figure, the axial direction is Fig. 9In the direction shown by N, the annular water channel 6 of the same circle needs a block 4 to block the annular water channel 6, and the adjacent water channel ribs 3 are processed with a gap, i.e., a water-passing gap 5, so that the annular water channels 6 of different circles are connected to form a continuous annular water channel 6. The number of annular water channels 6 of the annular return water channel can be 1, 2, 3, 4... and so on.

[0037] like Figure 8 , Fig. 9 As shown, in this embodiment, a water channel rib 3 is provided, and two annular water channels 6 connected in series are formed by separating the water channel rib 3. The upper annular water channel 6 is a starting circle 7, and the lower annular water channel 6 is an ending circle 8. The axial position of the water channel rib 3 is adjustable, and the axial widths between the annular water channels 6 are equal or unequal. The water channel rib 3 in this embodiment is arranged on the inner wall of the inner sleeve 1 and is located in the middle of the inner wall of the inner sleeve 1. The distances between the two annular water channels 6 in this embodiment are equal. Those skilled in the art can also set the annular water channels 6 to different distances according to actual needs.

[0038] The circumferential width of the water gap 5 is adjustable. The stopper 4 is provided with an adjustment platform 11 extending toward the water gap 5 . The circumferential width of the water gap 5 can be adjusted by adjusting the circumferential width of the adjustment platform 11 .

[0039] The stopper 4 is welded to the inner sleeve 1 or the outer sleeve 2. In this embodiment, the stopper 4 is welded to the outer wall of the inner sleeve 1. The waterway ribs 3 are set on the inner sleeve 1 by turning, and the water-passing gap 5 is opened on the waterway ribs 3 by milling. That is, in this embodiment, the stopper 4, the waterway ribs 3, the water inlet 9 and the water outlet 10 are all set on the outer wall of the inner sleeve 1. After the waterway ribs 3, the stopper 4, the water-passing gap 5, the water inlet 9 and the water outlet 10 are processed, the outer sleeve 2 is set on the inner sleeve 1, and the split inner sleeve 1 and the outer sleeve 2 are fixed into a whole by welding or interference fit. The manufacturing process of the annular spiral waterway is as follows. Fig.10 As shown, the water channel rib 3 is processed first, then the water-passing gap 5 is processed, and then the stopper 4 is welded.

[0040] In this embodiment, the annular water channel 6 almost occupies the entire axial space, and there is no low flow rate area or dead water area. At the same time, the position and size of the block 3 and the water gap 5 are adjustable, which can realize the flexible adjustment of the water flow direction. At the same time, the inner sleeve 1 of the water channel rib 3 is turned with a stable and simple process, and the water gap 5 is processed by milling the water channel rib 3. The milling amount is small, the process is reliable and simple, the block 3 has a simple shape and is easy to process. The welding positioning of the block 3 is simple and the process is stable. It is realized by turning, milling notches, and welding. Compared with pure milling and spiral turning, the processing cost can be significantly reduced. In this embodiment, the cooling water channel is not cast as a whole by the casing, but a combined structure of the inner sleeve 1 and the outer sleeve 2. Embodiment 2

[0041] The difference between this embodiment and the first embodiment is that Fig.11 As shown, two water channel ribs 3 are evenly distributed on the outer wall of the inner sleeve 1, and three annular water channels 6 connected in series are formed by the two water channel ribs 3. The uppermost annular water channel 6 is the starting circle 7, and the lowermost annular water channel 6 is the ending circle 8. At this time, the water inlet 9 and the water outlet 10 are respectively located on both sides of the block 4. The water inlet 9 and the water outlet 10 in the first embodiment are located on the same side of the block 4, that is, when the number of the water channel ribs 3 is an odd number, the water inlet 9 and the water outlet 10 are located on the same side of the block 4, and when the number of the water channel ribs 3 is an even number, the water inlet 9 and the water outlet 10 are located on different sides of the block 4. By different odd and even numbers of the annular water channels 6, the positions of the water inlet 9 and the water outlet 10 can be flexibly adjusted.

[0042] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0043] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A motor heat exchange cooling water channel, characterized in that: The invention comprises a combined inner sleeve (1) and an outer sleeve (2), wherein a stopper (4) is axially arranged on the outer wall of the inner sleeve (1) or the inner wall of the outer sleeve (2), and a water channel rib (3) is circumferentially arranged on the side of the stopper (4); one end of the water channel rib (3) is connected to the stopper (4), and the other end of the water channel rib (3) is not connected to the stopper (4) and a water-passing gap (5) is left between the water channel rib (3) and the stopper (4); at least two annular water channels (6) connected in series are formed by the water channel rib (3); when there are two or more water channel ribs (3), the water-passing gaps (5) between adjacent water channel ribs (3) are respectively located on both sides of the circumference of the stopper (4); the axial position of the water channel rib (3) is adjustable, and the axial widths of the annular water channels (6) are equal or unequal.

2. The motor heat exchange cooling water channel according to claim 1, characterized in that: The annular water channels (6) located at the two axial ends of the serially connected annular water channels (6) are respectively a starting circle (7) and an ending circle (8), the water inlet (9) and the water outlet (10) are respectively arranged on the starting circle (7) and the ending circle (8), and the water inlet (9) and the water outlet (10) are both arranged close to the stopper (4).

3. The motor heat exchange cooling water channel according to claim 2, characterized in that: The stopper (4) is welded to the inner sleeve (1) or the outer sleeve (2).

4. The motor heat exchange cooling water channel according to claim 3, characterized in that: The water channel ribs (3) are arranged on the inner sleeve (1) or the outer sleeve (2) by turning.

5. The motor heat exchange cooling water channel according to claim 4, characterized in that: The water-passing gap (5) is opened on the water channel rib (3) by milling.

6. The motor heat exchange cooling water channel according to claim 5, characterized in that: The stopper (4), the water channel ribs (3), the water inlet (9) and the water outlet (10) are all arranged on the outer wall of the inner sleeve (1).

7. The motor heat exchange cooling water channel according to claim 6, characterized in that: The circumferential width of the water-passing gap (5) is adjustable.

8. The motor heat exchange cooling water channel according to claim 7, characterized in that: The stopper (4) is provided with an adjustment platform (11) extending toward the water-passing gap (5), and the circumferential width of the water-passing gap (5) is adjusted by adjusting the circumferential width of the adjustment platform (11).

9. The motor heat exchange cooling water channel according to claim 8, characterized in that: After the water channel ribs (3), the stopper (4), the water gap (5), the water inlet (9) and the water outlet (10) are processed, the outer sleeve (2) is sleeved on the inner sleeve (1), and the split inner sleeve (1) and the outer sleeve (2) are fixed into a whole by welding or interference fit.

Images