Turn-back cooling water channel

Abstract

The turn-back cooling water channel comprises a main cylinder, a first pressing ring and a second pressing ring, the main cylinder is of a hollow cylindrical structure, a plurality of water channel holes are evenly formed in the end face of the main cylinder in the circumferential direction, a water inlet and a water outlet are formed in the outer side face of the main cylinder, and the water inlet and the water outlet are communicated with the water channel holes respectively; the two water channel holes communicated with the water inlet and the water outlet are arranged adjacently, the ends of the two adjacent water channel holes are communicated alternately, the two adjacent water channel holes communicated with the water inlet and the water outlet are not communicated, and the first pressing ring and the second pressing ring are fixed to the two ends of the main cylinder. The defects that the turn-back water channel is large in welding amount, complex in process and long in working time are overcome, and the strength and rigidity of the engine base are improved.

Description

Technical Field

[0001] The invention relates to the technical field of water-cooled motor bases, and in particular to a return cooling water channel. Background Art

[0002] Motor design tends to be high power, high efficiency, high power and torque density, small size, and low cost. To achieve these goals, water (liquid) cooling bases are increasingly widely used in motor cooling structures. Water cooling bases are an indirect cooling method for motors, which efficiently transfers the heat generated by the effective parts of the motor (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. Figure 1 ) is a major form of waterway. The three-dimensional form of the return waterway is Figure 2 As shown, the form of the water channel is determined based on factors such as the position of the motor's water inlet and outlet interfaces, the axial length, the pressure loss (pressure drop) of the cooling medium flowing in the water channel, and the manufacturing cost.

[0003] At present, the return waterway is mainly composed of an inner sleeve, a return waterway rib, and an outer sleeve. The return waterway rib is a steel bar of similar length, which is welded to the inner sleeve along the motor axis. The adjacent return waterway ribs are staggered for welding, and the water inlet and outlet can be arranged at the same end ( Figure 3 ). Due to the large number of return water channel ribs, the welding amount is large, and the mechanical strength loss 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. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a return cooling water channel, which solves the shortcomings of large welding amount, complex process and long working time of the return (circuitous) water channel, and improves the strength and rigidity of the machine base.

[0005] The specific plan is as follows: A return cooling water channel, characterized in that it includes a main cylinder body, a first pressure ring and a second pressure ring, the main cylinder body is a hollow cylindrical structure, and its end face is evenly opened with multiple water channel holes in the circumferential direction, and the outer side face is provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively connected to a water channel hole, and the two water channel holes connected to the water inlet and the water outlet are arranged adjacent to each other, the ends of the adjacent two water channel holes are alternately connected, and the adjacent two water channel holes connected to the water inlet and the water outlet are not connected, and the first pressure ring and the second pressure ring are fixed at both ends of the main cylinder body.

[0006] Furthermore, the main cylinder is an integrated structure.

[0007] Furthermore, the water channel hole is arranged along the axial direction of the main cylinder and is a waist-shaped hole. Those skilled in the art may also adopt other shapes.

[0008] Furthermore, the two adjacent water channel holes are connected by cutting off a section of the water retaining rib between the two adjacent water channel holes.

[0009] Furthermore, the first pressing ring and the second pressing ring are welded to the two ends of the main cylinder respectively, so that a return water channel is formed in the side wall of the main cylinder. The overall strength of the water channel is good and the water channel is easy to manufacture.

[0010] The beneficial effects of the present invention are: 1. No need to weld water channel weld bars, reducing welding workload.

[0011] 2. The main cylinder is an integral structure without inner and outer sleeves, and the overall strength of the machine base is improved.

[0012] 3. No additional welding positioning tooling is required, which improves manufacturing efficiency and reduces costs.

[0013] 4. The cross-sectional shape of the water channel can be processed into any shape, making the cross-sectional shape of the water channel flexible and changeable.

[0014] 5. There are fewer water channel parts and no parts of similar size such as water channel ribs, which can reduce the probability of manufacturing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the return waterway in the background technology.

[0016] Figure 2 It is a three-dimensional diagram of the return channel in the background technology.

[0017] Figure 3 It is a schematic diagram of a return water channel of a welding structure in the background technology.

[0018] Figure 4 It is an external schematic diagram of the present invention.

[0019] Figure 5 It is a schematic diagram of the internal structure of the present invention.

[0020] Figure 6 It is a schematic diagram of the end face of the main cylinder in the present invention.

[0021] Figure 7 It is a schematic diagram of the pressure ring in the present invention.

[0022] List of reference numerals: 1-main cylinder, 2-first pressure ring, 3-second pressure ring, 4-water channel hole, 5-water inlet, 6-water outlet. DETAILED DESCRIPTION

[0023] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0024] like Figure 4-7 As shown, the present application provides a return cooling water channel, including a main cylinder body 1, a first pressure ring 2 and a second pressure ring 3, the main cylinder body 1 is a hollow cylindrical structure, and a plurality of water channel holes 4 are evenly opened on its end face along the circumferential direction, and a water inlet 5 and a water outlet 6 are provided on the outer side surface, the water inlet 5 and the water outlet 6 are respectively connected to a water channel hole 4, and the two water channel holes 4 connected to the water inlet 5 and the water outlet 6 are adjacently arranged, and the ends of the adjacent two water channel holes 4 are alternately connected, and the adjacent two water channel holes 4 connected to the water inlet 5 and the water outlet 6 are not connected, and the first pressure ring 2 and the second pressure ring 3 are fixed at both ends of the main cylinder body 1.

[0025] In this embodiment, the main cylinder 1 is an integrated structure. The water channel hole 4 is arranged along the axial direction of the main cylinder 1 and is a waist-shaped hole.

[0026] In this embodiment, the communication between two adjacent water channel holes 4 is achieved by cutting off a section of the water retaining rib between two adjacent water channel holes 4 .

[0027] In this embodiment, a first pressing ring 2 and a second pressing ring 3 are welded to both ends of the main cylinder 1 , respectively, so that a return water channel is formed in the side wall of the main cylinder 1 .

[0028] The main cylinder body of the return water channel of the present invention is made of a cylindrical material with an axial hole (or cast, extruded, etc., not limited to the processing method), and then the water channel connecting gaps are milled at both ends of the cylindrical material. At this time, the main cylinder body is completed, and finally, the pressure ring 1 and the pressure ring 2 are welded at both ends of the main cylinder body to close the water channel of the main cylinder body to form a return water channel.

[0029] Compared with the existing return channel structure ( Figure 2 , Figure 3 ): The present invention does not require welding of water channel ribs, and the amount of welding is reduced. It only needs to weld the pressure rings at both ends. The overall strength and rigidity of the machine base will be improved, which is suitable for scenarios where the machine base bears a large load. No additional welding positioning tooling is required, which improves manufacturing efficiency and reduces costs. The cross-sectional shape of the water channel can be processed into any shape, and the cross-sectional shape of the water channel is flexible and changeable. There are few water channel parts, and there are no parts of similar sizes such as water channel ribs, reducing the probability of manufacturing errors. The cast main cylinder is suitable for mass production, with low cost and high efficiency. Similar cast main cylinders are all within the protection range.

[0030] In addition, the present invention can adjust parameters such as the number, length, and width of the water channel; the cross-sectional area of ​​the water channel can be of any shape; "water channel" does not specifically refer to water, but can be a cooling medium such as oil, air, water, and Freon; the application scope of the cooling water channel is not limited to motors, but can also be other components and equipment that require heat dissipation, and its application in motors is only a typical application of cooling water channels.

[0031] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A return cooling water channel, characterized in that: The invention comprises a main cylinder (1), a first pressing ring (2) and a second pressing ring (3). The main cylinder (1) is a hollow cylindrical structure, and a plurality of water channel holes (4) are evenly opened on its end surface along the circumferential direction. A water inlet (5) and a water outlet (6) are arranged on the outer surface. The water inlet (5) and the water outlet (6) are respectively connected to a water channel hole (4), and the two water channel holes (4) connected to the water inlet (5) and the water outlet (6) are arranged adjacent to each other. The ends of the two adjacent water channel holes (4) are alternately connected, and the two adjacent water channel holes (4) connected to the water inlet (5) and the water outlet (6) are not connected. The first pressing ring (2) and the second pressing ring (3) are fixed at both ends of the main cylinder (1).

2. A return cooling water channel according to claim 1, characterized in that: The main cylinder (1) is an integrated structure.

3. The return cooling water channel according to claim 1, characterized in that: The water channel hole (4) is arranged along the axial direction of the main cylinder (1) and is a waist-shaped hole.

4. The return cooling water channel according to claim 1, characterized in that: The two adjacent water channel holes (4) are connected by cutting off a section of the water retaining rib between the two adjacent water channel holes (4).

5. The return cooling water channel according to claim 1, characterized in that: A first pressing ring (2) and a second pressing ring (3) are respectively welded to the two ends of the main cylinder (1), so that a return water channel is formed in the side wall of the main cylinder (1).

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