Hexagonal water-cooled motor

Abstract

The utility model relates to the technical field of water-cooled motors, and discloses a hexagonal water-cooled motor, which comprises a motor casing and five cooling plates. The cross section of the motor shell is in a regular hexagon shape, inclined water through holes are machined in the hexagonal positions of one cross section in the motor shell, and the two ends of each inclined water through hole are communicated with the exteriors of the two adjacent side faces of the motor shell respectively. The five cooling plates are detachably installed outside five side faces of the motor shell respectively, water guide grooves are machined in the sides, close to the motor shell, of the cooling plates, and the water guide grooves are used for communicating every two adjacent inclined water through holes; according to the hexagonal water-cooled motor, the material and manufacturing cost of the water-cooled motor is reduced, the maintainability of the motor is improved, the cooling efficiency of the water-cooled motor is improved, the failure rate of the motor is reduced, and the effective service life of the motor is prolonged under the condition that the performance of the motor is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to water -cooled motor technical field, concretely is a hexagonal water -cooled motor. BACKGROUND

[0002] The motor generates heat in the running process, and the heat mainly comes from winding resistance loss, core loss, mechanical loss and environmental temperature. These factors will cause the motor temperature to rise during long-term operation of the motor, thereby reducing the motor performance, reducing the motor life, and increasing the equipment failure rate. Therefore, the motor needs to have a heat dissipation function to take away the excess heat.

[0003] The conventional cooling method is air cooling, which is to install a cooling fan at the tail end of the motor rotor. The fan runs synchronously or independently with the motor, and the fan blows the motor shell to dissipate heat, ensuring that the motor runs stably and for a long time in a suitable working temperature range. The cooling principle of the air-cooled motor determines that it can only use the air in the space where the motor is located to cool the motor. Therefore, the air dust in the space where the motor is located, the size of the space, the environmental temperature, etc. have a great influence on the cooling effect of the motor. If the dust is too much, the motor cooling fan and the shell will be covered with dust, which is not conducive to heat dissipation. If the space where the motor is located is small, the temperature of the air circulated by the motor fan will rise, resulting in poor heat dissipation effect of the motor. If the ambient temperature of the motor is high, the temperature of the air that the motor fan can use is high, and the heat dissipation effect of the motor is poor. High temperature is of great importance to the performance and life of the motor.

[0004] To cope with the above-mentioned unsuitable scene of air-cooled motor, the existing technology produces water-cooled motor. The water-cooled motor is a kind of motor cooled by water circulation system, which has the characteristics of high efficiency, high energy efficiency, small size, low noise and small environmental impact. Water-cooled motor is widely used in many fields, including numerical control machine tool, petroleum chemical industry, semiconductor, liquid crystal panel, photovoltaic industry, new energy automobile, shipbuilding, etc. Its characteristics make it occupy an important position in high-end manufacturing equipment, and can improve the technical level and competitiveness of the whole industry. The cooling principle of water-cooled motor is to take away the heat of motor shell through water cavity or coil, cooling plate and other structures in contact with motor shell, which can control the running temperature of motor and ensure that the motor runs stably and for a long time in a small range of suitable working temperature. Compared with air-cooled structure, water-cooled motor has the characteristics of good cooling effect, controllable temperature, no environmental influence, small overall length of motor, small vibration and noise of water-cooled motor at high speed, good sealing of motor, etc. At present, the conventional water-cooled motor cooling structure mainly has the following four types, which have certain defects in implementation.

[0005] Type one, process water cavity with interlayer in motor shell. The disadvantage of this method is that the material cost of motor shell is high, the casting difficulty is large, and the scale in water cavity is difficult to clean;

[0006] Type two, welding outside water cavity on the outer cylinder of the motor shell, its disadvantage is that the material of the motor shell and the outside water cavity is required to be high, the thin plate is difficult to be welded in the production, and the water scale in the water cavity cannot be cleaned;

[0007] Type three, embedding cooling coil in the inside of the cast motor shell, the disadvantage of this way is that the low pressure casting mold is expensive, the processing equipment is expensive, the processing cost is high, the water scale generated in the coil cannot be cleaned, the coil interface is easy to be damaged and cannot be repaired, etc.

[0008] Type four, sticking water cooling plate on the outer surface of the motor shell, its disadvantage is that the water cooling plate processing precision is required to be high, the motor shell surface processing cost is high, the water cooling plate and the motor shell cannot be perfectly combined, there are problems such as relatively low air thermal resistance heat conduction efficiency. Practical new type content

[0009] The utility model discloses a hexagonal water-cooled motor, which can reduce the material and manufacturing cost of the water-cooled motor, improve the maintainability of the motor, improve the cooling efficiency of the water-cooled motor, reduce the failure rate of the motor and prolong the effective service life of the motor.

[0010] The utility model discloses a hexagonal water-cooled motor, which can reduce the material and manufacturing cost of the water-cooled motor, improve the maintainability of the motor, improve the cooling efficiency of the water-cooled motor, reduce the failure rate of the motor and prolong the effective service life of the motor.

[0011] A hexagonal water-cooled motor includes a motor shell and five cooling plates. The cross section of the motor shell is a regular hexagon. A slanting water hole is formed at the position of the hexagon of a cross section in the motor shell. The two ends of the slanting water hole are respectively communicated with the outside of the adjacent two sides of the motor shell. The five cooling plates are respectively detachably installed on the outside of the five sides of the motor shell. A water guide groove is formed on the side of the cooling plate close to the motor shell. The water guide groove is used to connect the adjacent two slanting water holes.

[0012] Preferably, a water guide strip is arranged on the side of the cooling plate close to the motor shell. The water guide strip divides the water guide groove into a C-shaped structure. The slanting water hole is arranged at the position close to the one end of the motor shell. The two ends of the water guide groove are respectively communicated with the one end of the adjacent two slanting water holes.

[0013] Further, the cooling plate and the motor shell are connected through a screw. A first sealing ring is arranged between the cooling plate and the motor shell. The water guide groove is located in the first sealing ring.

[0014] Further, the two slanting water holes are respectively communicated with an inlet joint and an outlet joint in the side of the motor shell without the cooling plate.

[0015] Specifically, the motor shell is detachably connected with a joint plate on the side without the cooling plate, the joint plate is processed with a water inlet cavity and a water outlet cavity on the side close to the motor shell, the water inlet cavity and the water outlet cavity are communicated with two adjacent inclined water holes respectively, the water inlet joint and the water outlet joint are installed on the joint plate, the water inlet joint is communicated with the water inlet cavity, and the water outlet joint is communicated with the water outlet cavity.

[0016] Further, the joint plate is connected with the motor shell through screws, the joint plate is provided with a second sealing ring and a third sealing ring on the side close to the motor shell, the water inlet cavity is located in the second sealing ring, and the water outlet cavity is located in the third sealing ring.

[0017] The hexagonal water-cooled motor has the advantages that:

[0018] The hexagonal water-cooled motor comprises a motor shell and five cooling plates. The cross section of the motor shell is a regular hexagon, inclined water holes are formed in the positions of the hexagon of the cross section of the motor shell, and the five cooling plates are detachably installed on the outer sides of five sides of the motor shell. Water guide grooves are formed in the sides of the cooling plates close to the motor shell. After assembly, the inclined water holes and the water guide grooves are communicated to form an integrated flow channel. Cooling water is injected into one of the two inclined water holes on the side of the motor shell without the cooling plate, and the cooling water flows through the integrated flow channel and is discharged from the other hole. In this process, the cooling water directly acts on the motor shell when flowing through the water guide grooves, thereby achieving good water cooling effect.

[0019] Compared with the conventional water-cooled motor structure, the hexagonal water-cooled motor reduces the material and manufacturing cost of the water-cooled motor, improves the maintainability of the motor, improves the cooling efficiency of the water-cooled motor, reduces the failure rate of the motor, and prolongs the effective service life of the motor.

[0020] The material of the motor shell is a commonly used material for motor manufacturing, and a lower-cost material can be selected for manufacturing, thereby saving material cost. The motor shell manufacturing process is various and has no special limitation, the processing technology is simple, the precision requirement is not high, and conventional processing equipment can be used for processing, thereby reducing the cost of manufacturing equipment.

[0021] The processing technology of the cooling plate is low, the processing procedure is few, and the processing cost is low. The cooling plate is installed on the outer side of the hexagonal motor shell, and the cooling water directly acts on the motor shell when flowing, thereby improving the cooling efficiency. The large coverage area of the cooling plate can make the cooling of each part of the motor shell uniform, the temperature difference of the motor shell is small, the material thermal deformation size is relatively small, the failure rate of the motor is reduced, and the effective service life of the motor is prolonged. The cooling plates are not connected by water pipes, the blocking of the cooling pipes is eliminated, and the detachable connection form is adopted, so that the blocked foreign matters in the water guide grooves and the inclined water holes are more convenient to clean and have better cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a three-dimensional structure schematic view of a hexagonal water-cooled motor of the utility model;

[0023] Figure 2 It is a sectional view structure schematic view and a cooling water flow direction schematic view at a sectional position of a hexagonal water-cooled motor of the utility model;

[0024] Figure 3 It is a side view and a position schematic view of an oblique water hole of a hexagonal water-cooled motor of the utility model;

[0025] Figure 4 It is a structure schematic view of a cooling plate of a hexagonal water-cooled motor close to a side of a motor shell of the utility model;

[0026] In the drawing, 1-motor shell, 2-cooling plate, 3-oblique water hole, 4-water guide groove, 5-water guide strip, 6-first sealing ring, 7-water inlet joint, 8-water outlet joint, 9-joint plate, 10-water inlet cavity, 11-water outlet cavity, 12-second sealing ring, 13-third sealing ring. DETAILED DESCRIPTION

[0027] The technical scheme of the utility model will be described in further detail below in combination with the drawings, but the protection scope of the utility model is not limited to the following.

[0028] As Figures 1 to 4 shown, a hexagonal water-cooled motor includes a motor shell 1 and five cooling plates 2, the cross section of the motor shell 1 is regular hexagonal, the oblique water hole 3 is processed in the hexagonal position of a cross section in the motor shell 1, and the two ends of the oblique water hole 3 are communicated with the outside of the adjacent two sides of the motor shell 1 respectively. The five cooling plates 2 are detachably installed outside the five sides of the motor shell 1 respectively, and the water guide groove 4 is processed on the side of the cooling plate 2 close to the motor shell 1, which is used for connecting the adjacent two oblique water holes 3. Thus, the oblique water holes 3 and the water guide grooves 4 are connected to form an overall flow channel, and the cooling water is injected into one of the two oblique water hole orifices in the side of the motor shell without the cooling plate, and the cooling water is discharged from the other orifice after flowing through the overall flow channel. Since the water guide groove 4 is directly arranged on the outside of the motor shell 1, the cooling water can directly act on the motor shell 1 to take away the heat during the flow of the cooling water, thereby realizing good water cooling effect.

[0029] Compared with the conventional water-cooled motor structure, in this hexagonal water-cooled motor: the material of the motor housing 1 is a commonly used material for motor manufacturing, and lower-cost materials can be selected for manufacturing, saving material costs; the motor housing 1 has a variety of manufacturing processes without special restrictions, simple processing technology, and low precision requirements, and can be processed with conventional processing equipment, reducing the cost of manufacturing equipment. The processing technology of the cooling plate 2 is low, the processing steps are few, and the processing cost is low; the cooling plate 2 is installed on the outer surface of the hexagonal motor housing 1, and the cooling water directly acts on the motor housing 1 when it flows, thereby improving the cooling efficiency; the large coverage area of ​​the cooling plate 2 allows for uniform cooling of all parts of the motor housing 1, the temperature difference of the motor housing 1 is small, and the thermal deformation size of the material is relatively small, which is conducive to reducing the failure rate of the motor and extending the effective service life of the motor; there is no water pipe connection between the cooling plates 2, eliminating the blockage of the cooling pipe, and adopting a detachable connection form, which makes it more convenient to clean the blocked foreign matter in the water guide groove 4 and the oblique water hole 3, and the cleaning effect is better. Compared with conventional water-cooled motor structures, the hexagonal water-cooled motor can maintain and replace cooling parts, improve the repair rate of motor cooling parts damaged at the site of use, and reduce motor maintenance costs.

[0030] In practice, the water guide groove 4 on the cooling plate 2 can be processed into various forms, for example, the water guide groove 4 can be directly processed into an integral blind hole cavity or processed into an S-shaped shape. Taking into account the factors such as the flowability of cooling water, heat exchange area, and processing cost, as a preferred embodiment, Figure 4 A water guide bar 5 is provided on the side of the cooling plate 2 near the motor housing 1. This water guide bar 5 divides the water channel 4 into a C-shape. Each of the aforementioned oblique water holes 3 is located near one end of the motor housing, and the two ends of the C-shaped water channel 4 are connected to one end of two adjacent oblique water holes 3. In practice, the water channel 4 can be directly milled along a C-shaped trajectory, and the water guide bar 5 is directly formed after the machining is completed, making the manufacturing process convenient.

[0031] Furthermore, the cooling plate 2 is connected to the motor housing 1 by screws. A first sealing ring 6 is provided between the cooling plate 2 and the motor housing 1. The water guide groove 4 is located in the first sealing ring 6. The installation of the cooling plate 2 can be completed by tightening the screws and the first sealing ring 6 is tightened after installation to achieve reliable sealing. The installation process of the cooling plate 2 is extremely convenient.

[0032] Furthermore, on the side of the motor housing 1 where the cooling plate 2 is not installed, two oblique water holes 3 are respectively connected to a water inlet joint 7 and a water outlet joint 8 to facilitate connection with external water supply and return pipes.

[0033] Specifically, the side of the motor shell 1 without the cooling plate 2 is detachably connected with a joint plate 9, the side of the joint plate 9 close to the motor shell 1 is processed with a water inlet cavity 10 and a water outlet cavity 11, the water inlet cavity 10 and the water outlet cavity 11 are communicated with two adjacent inclined water holes 3 respectively, the water inlet joint 7 and the water outlet joint 8 are installed on the joint plate 9, the water inlet joint 7 is communicated with the water inlet cavity 10, and the water outlet joint 8 is communicated with the water outlet cavity 11.

[0034] Specifically, the joint plate 9 is connected with the motor shell 1 through screws, the side of the joint plate 9 close to the motor shell 1 is provided with a second sealing ring 12 and a third sealing ring 13, the water inlet cavity 10 is located in the second sealing ring 12, and the water outlet cavity 11 is located in the third sealing ring 13, so that the installation of the joint plate 9 is facilitated and the sealing performance of the joint plate 9 after installation is ensured.

[0035] The preferred embodiments of the utility model are described above, and it should be understood that the utility model is not limited to the forms disclosed in the text, should not be regarded as excluding other embodiments, and can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described in the text through the above teaching or related technical or knowledge. The changes and variations made by the person skilled in the art should be within the protection scope of the claims attached to the utility model.

Claims

1. A hexagonal water-cooled electric machine characterized by, The motor shell and five cooling plates are included. The cross section of the motor shell is regular hexagon, and the six corners of the cross section are provided with inclined water holes, and the two ends of the inclined water holes are communicated with the outside of the adjacent two side faces of the motor shell. The five cooling plates are respectively detachably installed on the five side faces of the motor shell, and the cooling plate close to the motor shell is provided with a water guide groove for connecting the adjacent two inclined water holes.

2. A hexagonal water-cooled electric machine according to claim 1, characterized in that, The cooling plate close to the motor shell is provided with a water guide strip, the water guide groove is divided into C shape by the water guide strip, the inclined water hole is arranged close to the one end of the motor shell, and the two ends of the water guide groove are respectively communicated with the one end of the adjacent two inclined water holes.

3. A hexagonal water-cooled electric machine according to claim 1, characterized in that, The cooling plate and the motor shell are connected by screws, and the first sealing ring is arranged between the cooling plate and the motor shell, and the water guide groove is located in the first sealing ring.

4. A hexagonal water-cooled electric machine according to any one of claims 1 to 3, characterized in that, In the side face of the motor shell without the cooling plate, the two inclined water holes are respectively provided with water inlet joint and water outlet joint.

5. A hexagonal water-cooled electric machine according to claim 4, characterized in that, The joint plate is detachably connected to the side face of the motor shell without the cooling plate, the water inlet cavity and the water outlet cavity are machined on the side of the joint plate close to the motor shell, the water inlet cavity and the water outlet cavity are respectively communicated with the adjacent two inclined water holes, the water inlet joint and the water outlet joint are installed on the joint plate, the water inlet joint is communicated with the water inlet cavity, and the water outlet joint is communicated with the water outlet cavity.

6. A hexagonal water-cooled electric machine according to claim 5, characterized in that, The joint plate and the motor shell are connected by screws, and the second sealing ring and the third sealing ring are arranged on the side of the joint plate close to the motor shell, the water inlet cavity is located in the second sealing ring, and the water outlet cavity is located in the third sealing ring.

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