Motor shell of high-efficiency aluminum shell motor

Abstract

The utility model relates to a motor casing of a high-efficiency aluminum casing motor, which comprises a cylindrical aluminum casing, the aluminum casing comprises an upper casing and a lower casing, a rectangular mounting seat is formed on the outer wall of the front side of the upper casing, and a threading hole penetrating through the inner wall of the upper casing is formed on the mounting seat. A plurality of arc-shaped upper cooling grooves which are annularly and uniformly distributed are formed in the lower end surface of the upper shell on the left side, the right side and the rear side of the mounting seat; the upper end face of the lower shell abuts against the lower end face of the upper shell, a plurality of arc-shaped lower cooling grooves staggered with the upper cooling grooves are formed, and the lower cooling grooves are annularly and evenly distributed around the central axis of the lower shell. The upper cooling grooves in the upper shell are located between the adjacent lower cooling grooves in the lower shell, and the two sides of each upper cooling groove are communicated with the adjacent lower cooling grooves respectively. The motor shell is an aluminum shell composed of the upper shell body and the lower shell body, the cooling flow channel is arranged in the aluminum shell and is irrelevant to a shell cover installed subsequently, and the difficulty of maintaining and replacing internal components of the motor cannot be increased.

Description

Technical Field:

[0001] The utility model relates to the technical field of aluminum shells of water-cooled motors, and more specifically to a motor housing of a high-efficiency aluminum-shell motor. Background Art:

[0002] At present, there are various models of motors, and their cooling methods are also diverse, including natural cooling, air cooling, and water cooling. Among them, water-cooled motors can achieve better heat dissipation and effectively improve various performances of the motors. Currently, the water-cooling structure of motors is arranged on their motor housings. Some motor housings are provided with sine-shaped cooling channels in the main housing body, and interfaces penetrating the outer wall of the main housing are only arranged at both ends of the cooling channels. The housing is not prone to leakage, but the manufacturing cost is relatively high. Therefore, someone proposed to design the motor housing in a split structure, including a cylindrical main housing, cover shells are respectively arranged at the upper and lower ends of the main housing, and several fan-shaped cooling cavity grooves are formed on the shell wall of the main housing. The cover shell is provided with bypass channels connecting adjacent cooling cavity grooves. However, when performing maintenance and replacement of the rotor and stator for the above structure, it is necessary to first drain the cooling water in the cooling cavity grooves and then disassemble the cover shell before the rotor and stator can be repaired; moreover, during the repeated disassembly and assembly and maintenance process, if the installation is not in place, water leakage and motor burnout are likely to occur. Therefore, it is necessary to design a water-cooled housing with low manufacturing cost and convenient maintenance and replacement. Content of the Utility Model:

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a motor housing of a high-efficiency aluminum-shell motor. The motor housing is an aluminum shell composed of an upper housing and a lower housing. The cooling channel is arranged inside the aluminum shell and has nothing to do with the subsequently installed shell cover, and it will not increase the difficulty of maintaining and replacing internal components of the motor.

[0004] A motor housing of a high-efficiency aluminum-shell motor includes a cylindrical aluminum shell, which includes an upper housing and a lower housing. A rectangular mounting seat is formed on the outer wall of the front side of the upper housing, and a wire passing hole penetrating the inner wall of the upper housing is formed on the mounting seat. Several circular arc-shaped and annularly evenly distributed upper cooling grooves are formed on the lower end surface of the upper housing on the left, right, and rear sides of the mounting seat;

[0005] The upper end surface of the lower housing abuts against the lower end surface of the upper housing and forms several circular arc-shaped lower cooling grooves that are misaligned with the upper cooling grooves. The lower cooling grooves are annularly evenly distributed around the central axis of the lower housing; the upper cooling grooves on the upper housing are located between adjacent lower cooling grooves of the lower housing, and both sides of the upper cooling grooves are respectively communicated with adjacent lower cooling grooves;

[0006] A plurality of upper prisms are formed on the outer wall of the upper housing, and a plurality of lower prisms facing the upper prisms are formed on the outer wall of the lower housing. A vertical stepped hole is formed in the upper prism, and a locking bolt is inserted into the stepped hole. The lower end of the locking bolt extends out of the upper prism and is screwed and fixed on the lower prism.

[0007] On the outer wall of the lower housing directly below the mounting seat, a water inlet interface and a water outlet interface are respectively formed, and the water inlet interface and the water outlet interface are respectively communicated with two adjacent groups of lower cooling grooves.

[0008] Preferably, the number of upper cooling grooves on the upper housing is odd, the number of lower cooling grooves on the lower housing is even, and the number of lower cooling grooves is one more than the number of upper cooling grooves.

[0009] Preferably, the depth of the upper cooling groove is equal to 2 / 3 to 4 / 5 of the length of the upper housing; the depth of the lower cooling groove is equal to 2 / 3 to 4 / 5 of the length of the lower housing.

[0010] Preferably, the inner walls of the upper housing and the lower housing are on the same cylindrical surface, and the outer wall of the lower housing and the outer wall of the upper housing are within the same cylindrical surface;

[0011] The number of upper prisms is equal to the number of lower prisms, and the upper prisms and the lower prisms are evenly distributed in a ring around the central axis of the lower housing.

[0012] Preferably, the lower end surface of the upper prism is located above the lower end surface of the upper housing, the upper end surface of the lower prism is located below the upper end surface of the lower housing, the locking bolt is an internal hexagonal bolt, and an upper nut and a lower nut are screwed on the locking bolt. The upper nut presses against the lower end surface of the upper prism, and the lower nut presses against the upper end surface of the lower prism.

[0013] Preferably, a threaded hole is formed in the lower end surface of the lower prism, and an internal thread is formed on the hole wall at the upper end of the stepped hole of the upper prism.

[0014] Preferably, annular sealing grooves are respectively formed on the inner and outer circles of the lower end surface of the upper housing, sealing rings are inserted into the sealing grooves, and the sealing rings are clamped and fixed between the upper housing and the lower housing; the lower cooling grooves and the upper cooling grooves are both located between the sealing rings.

[0015] Preferably, a circular upper sealing ring groove is formed on the upper end surface of the upper housing, and a circular lower sealing ring groove is formed on the lower end surface of the lower housing.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The motor housing is an aluminum shell composed of an upper shell and a lower shell. The cooling flow channels are arranged inside the aluminum shell and have nothing to do with the subsequent installed shell cover, which will not increase the difficulty of repairing and replacing the internal components of the motor. Moreover, the split-structured shell is convenient for manufacturing, and can effectively save costs compared with the integral motor housing with internal cooling flow channels. Brief Description of the Drawings:

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a front-view structural schematic diagram of the present utility model;

[0020] Figure 3 is Figure 2 a sectional structural schematic diagram at A-A in

[0021] Figure 4 is Figure 2 a sectional structural schematic diagram at B-B in

[0022] Figure 5 is Figure 2 a sectional structural schematic diagram at C-C in

[0023] Figure 6 is a half-sectional schematic diagram of the present utility model in the front view direction.

[0024] In the figure: 1. Lower shell; 11. Lower cooling groove; 12. Water inlet interface; 13. Water outlet interface; 14. Lower prism; 2. Upper shell; 21. Mounting seat; 22. Wire passing hole; 23. Upper cooling groove; 24. Upper prism; 25. Step hole; 26. Sealing groove; 27. Mountain-shaped sealing ring groove; 3. Locking bolt; 4. Upper nut; 5. Lower nut; 6. Sealing ring. Specific Embodiment:

[0025] Embodiment: As shown in Figures 1 to 6 , a motor housing of a high-efficiency aluminum-shell motor includes a cylindrical aluminum shell, which includes an upper shell 2 and a lower shell 1. A rectangular mounting seat 21 is formed on the outer wall of the front side of the upper shell 2, and a wire passing hole 22 penetrating the inner wall of the upper shell 2 is formed on the mounting seat 21. A plurality of arc-shaped and annularly uniformly distributed upper cooling grooves 23 are formed on the lower end surface of the upper shell 2 on the left, right and rear sides of the mounting seat 21;

[0026] The upper end surface of the lower shell 1 abuts against the lower end surface of the upper shell 2 and forms a plurality of arc-shaped lower cooling grooves 11 that are offset from the upper cooling grooves 23. The lower cooling grooves 11 are annularly and uniformly distributed around the central axis of the lower shell 1; the upper cooling grooves 23 on the upper shell 2 are located between the adjacent lower cooling grooves 11 of the lower shell 1, and both sides of the upper cooling grooves 23 are respectively communicated with the adjacent lower cooling grooves 11;

[0027] The outer wall of the upper shell 2 is formed with a plurality of upper prisms 24, and the outer wall of the lower shell 1 is formed with a plurality of lower prisms 14 facing the upper prisms 24. The upper prisms 24 are formed with vertical stepped holes 25, and the stepped holes 25 are inserted with locking bolts 3. The lower end of the locking bolts 3 extends out of the upper prisms 24 and is screwed and fixed to the lower prisms 14.

[0028] A water inlet interface 12 and a water outlet interface 13 are respectively formed on the outer wall of the lower shell body 1 directly below the mounting seat 21. The water inlet interface 12 and the water outlet interface 13 are respectively connected to the two adjacent groups of lower cooling grooves 11. The water inlet interface 12 can be connected to the liquid cooling inlet pipe, and the water outlet interface 13 can be connected to the liquid cooling outlet pipe.

[0029] The number of upper cooling grooves 23 on the upper shell 2 is odd, and the number of lower cooling grooves 11 on the lower shell 1 is even. The number of lower cooling grooves 11 is one more than the number of upper cooling grooves 23. Only when the lower cooling grooves 11 are even and odd, can an effective cooling channel be formed in the motor housing.

[0030] The depth of the upper cooling groove 23 is equal to 2 / 3 to 4 / 5 of the length of the upper shell 2; the depth of the lower cooling groove 11 is equal to 2 / 3 to 4 / 5 of the length of the lower shell 1. The depths of the upper cooling groove 23 and the lower cooling groove 11 are set to ensure the cooling effect. Otherwise, the structure with a shallow depth cannot achieve effective cooling.

[0031] The inner wall of the upper shell 2 and the inner wall of the lower shell 1 are on the same cylindrical surface, and the outer wall of the lower shell 1 and the outer wall of the upper shell 2 are on the same cylindrical surface;

[0032] The number of the upper prisms 24 is equal to the number of the lower prisms 14 , and the upper prisms 24 and the lower prisms 14 are evenly distributed in a ring shape around the central axis of the lower shell 1 .

[0033] The lower end face of the upper prism 24 is located on the upper side of the lower end face of the upper shell 2, and the upper end face of the lower prism 14 is located on the lower side of the upper end face of the lower shell 1. The locking bolt 3 adopts a hexagonal bolt, and an upper nut 4 and a lower nut 5 are screwed on the locking bolt 3. The upper nut 4 is pressed against the lower end face of the upper prism 24, and the lower nut 5 is pressed down against the upper end face of the lower prism 14. The upper nut 4 and the lower nut 5 are respectively arranged on the upper prism 24 and the lower prism 14, which can effectively limit the loosening of the locking bolt 3 and thus prevent leakage of the aluminum shell.

[0034] A threaded hole is formed on the lower end surface of the lower prism 14, and an internal thread is formed on the hole wall of the upper end of the stepped hole 25 on the upper prism 24. The upper prism 24 and the lower prism 14 can serve as connecting parts for connecting the motor housing cover.

[0035] An annular sealing groove 26 is respectively formed on the inner and outer circles of the lower end surface of the upper housing 2. A sealing ring 6 is inserted into the sealing groove 26, and the sealing ring 6 is clamped and fixed between the upper housing 2 and the lower housing 1; the lower cooling groove 11 and the upper cooling groove 23 are both located between the sealing rings 6.

[0036] A circular upper sealing ring groove 27 is formed on the upper end surface of the upper housing 2, and a circular lower sealing ring groove is formed on the lower end surface of the lower housing 1.

[0037] Working principle: The present utility model is the motor housing of a high-efficiency aluminum shell motor. The aluminum shell motor uses aluminum alloy to make the motor housing. Aluminum alloy has good heat conduction effect. At the same time, the internal water cooling flow channel can effectively improve the heat dissipation effect, and thus can comprehensively improve the performance and efficiency of the motor;

[0038] This aluminum shell is composed of an upper housing 2 and a lower housing 1. The upper cooling groove 23 and the lower cooling groove 11 which are offset from each other are respectively arranged on the upper housing 2 and the lower housing 1. The upper cooling groove 23 and the lower cooling groove 11 form a cooling flow channel similar to a sine shape in the aluminum shell. Water cooling of the motor is realized by introducing water through the water inlet interface 12 and discharging water through the water outlet interface 13.

[0039] The aluminum shell of this structure participates in the assembly of the motor as a whole component. Except when problems occur in the water cooling system and the upper housing 2 and the lower housing 1 need to be disassembled, when problems occur in other components of the motor, it is not necessary to disassemble the upper housing 2 and the lower housing 1. For conventional motor repairs, such as repairing the stator or rotor, it is not necessary to disassemble the aluminum shell, so there is no need for procedures such as draining water, which is convenient for repair operations.

[0040] The described embodiments are used to illustrate the present utility model by way of example, rather than to limit the present utility model. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the scope of the rights protection of the present utility model should be as listed in the claims of the present utility model.

Claims

1. The motor housing of a high-efficiency aluminum shell motor, comprising a cylindrical aluminum shell, the aluminum shell includes an upper housing (2) and a lower housing (1), a rectangular mounting seat (21) is formed on the outer wall of the front side of the upper housing (2), and a wire passing hole (22) penetrating through the inner wall of the upper housing (2) is formed on the mounting seat (21), and the characteristics are as follows: On the lower end surfaces of the upper shell (2) on the left, right and rear sides of the mounting base (21), several arc-shaped upper cooling grooves (23) are formed and evenly distributed in a ring shape. The upper end surface of the lower shell (1) abuts against the lower end surface of the upper shell (2) and forms several arc-shaped lower cooling grooves (11) that are offset from the upper cooling grooves (23). The lower cooling grooves (11) are evenly distributed in a ring shape around the central axis of the lower shell (1). The upper cooling grooves (23) on the upper shell (2) are located between adjacent lower cooling grooves (11) of the lower shell (1), and both sides of the upper cooling grooves (23) are respectively communicated with the adjacent lower cooling grooves (11). Several upper prisms (24) are formed on the outer wall of the upper shell (2), and several lower prisms (14) opposite to the upper prisms (24) are formed on the outer wall of the lower shell (1). A vertical step hole (25) is formed on the upper prism (24), and a locking bolt (3) is inserted into the step hole (25). The lower end of the locking bolt (3) extends out of the upper prism (24) and is screwed and fixed on the lower prism (14). An inlet interface (12) and an outlet interface (13) are respectively formed on the outer wall of the lower shell (1) directly below the mounting base (21). The inlet interface (12) and the outlet interface (13) are respectively communicated with two adjacent groups of lower cooling grooves (11).

2. The motor housing of a high-efficiency aluminum shell motor according to claim 1, characterized in that: The number of the upper cooling grooves (23) on the upper shell (2) is odd, the number of the lower cooling grooves (11) on the lower shell (1) is even, and the number of the lower cooling grooves (11) is one more than the number of the upper cooling grooves (23).

3. The motor housing of a high-efficiency aluminum-shell motor according to claim 2, characterized in that: The depth of the upper cooling grooves (23) is equal to 2 / 3 - 4 / 5 of the length of the upper shell (2); the depth of the lower cooling grooves (11) is equal to 2 / 3 - 4 / 5 of the length of the lower shell (1).

4. The motor housing of a high-efficiency aluminum-shell motor according to claim 2, characterized in that: The inner walls of the upper shell (2) and the lower shell (1) are on the same cylindrical surface, and the outer walls of the lower shell (1) and the upper shell (2) are within the same cylindrical surface. The number of the upper prisms (24) is equal to the number of the lower prisms (14), and the upper prisms (24) and the lower prisms (14) are respectively evenly distributed in a ring shape around the central axis of the lower shell (1).

5. The motor housing of a high-efficiency aluminum-shell motor according to claim 4, characterized in that: The lower end surface of the upper prism (24) is on the upper side of the lower end surface of the upper shell (2), and the upper end surface of the lower prism (14) is on the lower side of the upper end surface of the lower shell (1). The locking bolt (3) is an internal hexagonal bolt, and an upper nut (4) and a lower nut (5) are screwed on the locking bolt (3). The upper nut (4) presses against the lower end surface of the upper prism (24), and the lower nut (5) presses against the upper end surface of the lower prism (14).

6. The motor housing of a high-efficiency aluminum-shell motor according to claim 5, characterized in that: A threaded hole is formed on the lower end surface of the lower prism (14), and internal threads are formed on the hole wall at the upper end of the step hole (25) on the upper prism (24).

7. The motor housing of a high-efficiency aluminum-shell motor according to claim 1, characterized in that: Annular sealing grooves (26) are respectively formed on the inner and outer circles of the lower end surface of the upper shell (2). Sealing rings (6) are inserted into the sealing grooves (26), and the sealing rings (6) are clamped and fixed between the upper shell (2) and the lower shell (1). The lower cooling grooves (11) and the upper cooling grooves (23) are both located between the sealing rings (6).

8. The motor housing of a high-efficiency aluminum-shell motor according to claim 1, characterized in that: A circular upper sealing ring groove (27) is formed on the upper end surface of the upper housing (2), and a circular lower sealing ring groove is formed on the lower end surface of the lower housing (1).

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