Totally enclosed motor housing with built-in cooling mechanism

Abstract

The utility model discloses a kind of totally enclosed motor shell of built-in heat dissipation mechanism belong to motor shell technical field, including protective casing, its front and rear end is respectively fixedly installed with front closed end cover, and rear closed end cover, and front closed end cover middle part is installed with sealing shaft cylinder;Install inner shell, it is set in protective casing;Fan assembly, it is fixedly installed in rear closed end cover;Wherein, the connecting fin of install inner shell outer wall fixed setting has, its outer end is fixedly connected with protective casing, connecting fin is worn with spiral liquid cooling pipe in it.The technical points are: sealing shaft cylinder is used to ensure the airtightness of motor output shaft and front closed end cover connection, and rear closed end cover is not provided with any hole, so that the sealing property of motor shell whole can be significantly improved, in addition, the airflow of fan assembly blowing can circulate, so that heat can be continuously driven, and the heat carried away can be absorbed by cooling liquid in spiral liquid cooling pipe when passing through, avoid heat accumulation.

Description

Technical Field

[0001] This utility model relates to the field of motor housing technology, specifically a fully enclosed motor housing with a built-in heat dissipation mechanism. Background Technology

[0002] A fully enclosed motor housing is a structural design that prevents the motor's interior from contacting the outside air, effectively preventing the intrusion of moisture, dust, and other harmful substances, thus enhancing the motor's protective performance. Its design uses a sealed structure to block external contamination, while heat sinks or fans on the housing assist in heat dissipation, ensuring stable motor operation. Fully enclosed motor housings are suitable for various indoor and outdoor environments, especially in scenarios where the air contains corrosive or harmful substances. Furthermore, fully enclosed motor housings are compact, wear-resistant, and extend the motor's lifespan, reducing maintenance costs. They are a crucial component for ensuring the efficient and safe operation of motors.

[0003] Utility model CN219041527U discloses a motor housing, comprising: a main body forming a cylindrical cavity for accommodating an air pump rotor; a fan blade shell having an open end and a closed end; a limiting block fixed to one end of the main body; and a limiting groove formed on the fan blade shell and spaced apart from the open end. When the fan blade shell is fitted into the main body, it deforms, causing the limiting block to insert into the limiting groove, thereby limiting the fan blade shell in the axial and circumferential directions of the main body. Based on the above technical solution, this utility model provides a motor housing that can be quickly and stably assembled.

[0004] Although the aforementioned utility model can achieve rapid and stable assembly and is equipped with fan blades to dissipate heat from the motor, its heat dissipation principle requires the fan blades to introduce external air into the motor housing to dissipate heat from the working parts of the motor. This heat dissipation method results in poor overall sealing of the motor housing, and the internal components of the motor are easily invaded by moisture, dust and other substances. It cannot achieve the goal of improving the protection of the internal components of the motor through a fully enclosed measure while ensuring heat dissipation. Therefore, in order to address the above problems, a fully enclosed motor housing with a built-in heat dissipation mechanism is proposed. Utility Model Content

[0005] To address the technical problem in comparative technologies that motor housings cannot simultaneously ensure heat dissipation while improving the protection of internal motor components through a fully enclosed design, this invention provides a fully enclosed motor housing with a built-in heat dissipation mechanism.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A fully enclosed motor housing with a built-in heat dissipation mechanism includes a protective outer shell, a front sealing end cover fixedly installed at its front end, and a rear sealing end cover fixedly installed at its rear end. The front sealing end cover has a through mounting hole in the middle, through which a sealing shaft is installed. An inner mounting shell is disposed inside the protective outer shell. A fan assembly is fixedly installed inside the rear sealing end cover for blowing airflow into the inner mounting shell. The outer wall of the inner mounting shell is fixedly provided with a plurality of arrayed connecting fins, the outer ends of which are fixedly connected to the protective outer shell. The connecting fins divide the annular cavity formed between the inner mounting shell and the protective outer shell into a plurality of cooling air channels, and a spiral liquid cooling pipe passes through the connecting fins.

[0008] In one possible implementation, the fan blade portion of the fan assembly is entirely located within the mounting housing, and a guide vane is fixedly installed inside the front closed end cover to direct the airflow passing through the mounting housing to the surrounding area and into the cooling duct.

[0009] In one possible implementation, the spiral liquid cooling tube includes a spiral tube segment fixedly connected to the connecting fins, with an inlet port and an outlet port respectively sealed at both ends, wherein the inlet port and the outlet port extend out of the protective shell and are sealed to the protective shell.

[0010] In one possible implementation, the spiral tube segment extends laterally through all the cooling air ducts, and the inner side of the spiral tube segment does not contact the mounting inner shell, while the outer side of the spiral tube segment does not contact the protective outer shell.

[0011] In one possible implementation, rotor brackets are fixedly provided at both the front and rear ends of the mounting inner shell to support and fix the rotor shaft of the motor.

[0012] In one possible implementation, the rotor support includes a bearing housing, the outer wall of which is fixedly provided with a plurality of support spokes arranged in a circumferential array, the outer ends of which are fixedly connected to the inner wall of the protective housing.

[0013] In one possible implementation, the opening of the front closed end cover is fixedly provided with an outwardly protruding front sealing ring. After the front closed end cover is installed, the front sealing ring fits against the inner wall of the protective shell. The opening of the rear closed end cover is fixedly provided with an outwardly protruding rear sealing ring. After the rear closed end cover is installed, the rear sealing ring fits against the inner wall of the protective shell.

[0014] In one possible implementation, a fixing plate seat is machined in the middle of the front closed end cover, and the sealing shaft cylinder includes a cylinder body with several sealing rubber rings installed inside, and an mounting plate is fixedly installed on its outside, with the mounting plate bolted to the fixing plate seat.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] The motor housing has a front closed end cover and a rear closed end cover fixedly installed at both ends of the protective shell. The front closed end cover is provided with a sealing shaft sleeve to ensure the airtightness of the connection between the motor output shaft and the front closed end cover. The rear closed end cover has no holes. Based on the above solution, the overall sealing performance of the motor housing can be significantly improved, thereby playing a role in sealing and protecting the internal motor components, which can meet the usage requirements in different scenarios.

[0017] The double-layer design of the protective outer shell and the mounting inner shell creates a cooling airflow channel between them. When the fan assembly is working, it continuously blows airflow into the mounting inner shell. When the airflow passes through the closed end cover before the rotor assembly moves, it is dispersed by impacting the guide plate. It then flows back to the closed end cover through the cooling airflow channel, and is then drawn back into the mounting inner shell by the fan assembly. This completes the airflow circulation, allowing heat to be continuously generated. The heat carried away is absorbed and carried away by the coolant flowing in the spiral liquid cooling pipe, thus ensuring the high efficiency of the heat dissipation measures inside the motor housing. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the heat dissipation structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the closed structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the sealing shaft cylinder structure of this utility model.

[0024] In the diagram: 1. Protective outer shell; 2. Inner shell; 21. Rotor support; 211. Bearing housing; 212. Support spokes; 3. Connecting fins; 4. Spiral liquid cooling pipe; 41. Spiral pipe section; 42. Water inlet port; 43. Water outlet port; 5. Front closed end cover; 51. Front sealing ring; 52. Fixing plate base; 6. Rear closed end cover; 61. Rear sealing ring; 7. Fan assembly; 8. Flow guide plate; 9. Sealing shaft cylinder; 91. Cylinder body; 92. Sealing ring; 93. Mounting plate. Detailed Implementation

[0025] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0026] like Figure 1 - Figure 2 As shown, this embodiment provides a fully enclosed motor housing with a built-in heat dissipation mechanism, including a protective outer shell 1, a front sealing end cover 5 fixedly installed at its front end, and a rear sealing end cover 6 fixedly installed at its rear end. The front sealing end cover 5 has a through mounting hole in the middle, through which a sealing shaft cylinder 9 is installed.

[0027] Based on the above solution, the sealing shaft sleeve 9 is used to ensure the airtightness of the connection between the motor output shaft and the front closed end cover 5, while the rear closed end cover 6 has no holes. This can significantly improve the overall sealing performance of the motor housing, thereby providing a sealed protection for the internal motor components and meeting the usage requirements in different scenarios.

[0028] The front closed end cover 5 has a fixed plate seat 52 machined in the middle. The sealing shaft cylinder 9 includes a cylinder body 91, which has several sealing rubber rings 92 installed inside. An mounting plate 93 is fixedly installed on its outside. The mounting plate 93 is bolted to the fixed plate seat 52. Figure 4 - Figure 5 As shown, based on the above scheme, the sealing shaft cylinder 9 and the front closed end cover 5 can be detachably connected by bolts between the mounting plate 93 and the fixed plate seat 52, which is convenient for later maintenance and replacement. The sealing ring 92 in the cylinder body 91 can fit tightly with the motor output shaft, ensuring the sealing effect at the connection without affecting its rotation.

[0029] In addition, such as Figure 4 - Figure 5 As shown, the opening of the front closed end cover 5 is fixedly provided with a protruding front sealing ring 51. After the front closed end cover 5 is installed, the front sealing ring 51 fits against the inner wall of the protective shell 1. The tight fit between the front sealing ring 51 and the protective shell 1 improves the sealing performance of the connection between the front closed end cover 5 and the protective shell 1. The opening of the rear closed end cover 6 is fixedly provided with a protruding rear sealing ring 61. After the rear closed end cover 6 is installed, the rear sealing ring 61 fits against the inner wall of the protective shell 1. The tight fit between the rear sealing ring 61 and the protective shell 1 improves the sealing performance of the connection between the rear closed end cover 6 and the protective shell 1.

[0030] like Figure 1 - Figure 3As shown, in order to achieve efficient heat dissipation inside the fully enclosed motor housing, this embodiment provides a fully enclosed motor housing with a built-in heat dissipation mechanism, which also includes an inner mounting shell 2, which is disposed inside the protective outer shell 1; a fan assembly 7, which is fixedly installed inside the rear closed end cover 6, for blowing airflow into the inner mounting shell 2; wherein, the outer wall of the inner mounting shell 2 is fixedly provided with a plurality of arrayed connecting fins 3, the outer ends of which are fixedly connected to the protective outer shell 1, and the connecting fins 3 divide the annular cavity formed between the inner mounting shell 2 and the protective outer shell 1 into a plurality of cooling air channels, and a spiral liquid cooling pipe 4 passes through the connecting fins 3; in addition, the fan blades of the fan assembly 7 are completely located inside the inner mounting shell 2, and a guide plate 8 is fixedly installed inside the front closed end cover 5, which is used to guide the airflow passing through the inner mounting shell 2 to the surrounding area and into the cooling air channels.

[0031] Based on the above technical solution, a cooling air duct is formed between the protective outer shell 1 and the mounting inner shell 2 through the double-layer design. When the fan assembly 7 is working, it continuously blows air into the mounting inner shell 2. When the airflow passes through the front closed end cover 5 of the rotor assembly, it will be scattered due to the impact of the guide plate 8. Then it flows back to the rear closed end cover 6 through the cooling air duct, and then is drawn into the mounting inner shell 2 by the fan assembly 7. This completes the circulation of airflow, so that heat can be continuously driven. The heat carried away will be absorbed and carried away by the coolant flowing in the spiral liquid cooling pipe 4, thus ensuring the high efficiency of heat dissipation measures inside the motor housing.

[0032] The spiral liquid cooling tube 4 includes a spiral tube section 41 fixedly connected to the connecting fins 3, with a water inlet port 42 and a water outlet port 43 respectively sealed at both ends. Both the water inlet port 42 and the water outlet port 43 extend out of the protective shell 1 and are sealed to it. Figure 2 - Figure 3 As shown, the above solution achieves a tight seal between the spiral liquid cooling pipe 4 and the protective outer shell 1, without compromising the overall airtightness of the motor housing. Furthermore, the spiral pipe section 41 extends laterally through all cooling air ducts, and the inner side of the spiral pipe section 41 does not contact the inner housing 2, while the outer side of the spiral pipe section 41 does not contact the protective outer shell 1. Figure 2 - Figure 3 As shown, based on the above technical solution, it can be ensured that the spiral tube section 41 can absorb all the heat in the cooling air duct, ensuring the uniformity of heat dissipation. At the same time, its characteristic of not contacting the protective shell 1 and the mounting inner shell 2 allows it to be suspended in the air, and the airflow can flow through its inner and outer sides, improving its efficiency in absorbing heat from the airflow.

[0033] In addition, such as Figure 2 - Figure 3As shown, rotor brackets 21 are fixedly installed at both the front and rear ends of the inner shell 2 to support and fix the rotor shaft of the motor. The rotor bracket 21 includes a bearing housing 211, and a number of support spokes 212 arranged in a circular array are fixedly installed on its outer wall. The outer ends of the support spokes 212 are fixedly connected to the inner wall of the protective shell 1. Based on the above scheme, the two ends of the rotor assembly can be fixed through the bearing housing 211. At the same time, the support spokes 212 will not significantly hinder the flow of air and will not significantly affect the effect of the circulating airflow in carrying away heat.

[0034] The working principle and usage process of this utility model:

[0035] The sealing cylinder 9 provided on the front closed end cover 5 can ensure the airtightness of the connection between the motor output shaft and the front closed end cover 5. The rear closed end cover 6 has no holes. Based on the above scheme, the overall sealing performance of the motor housing can be significantly improved, thereby providing a sealed protection for the internal motor components and meeting the usage requirements in different scenarios. At the same time, the tight fit between the front sealing ring 51 and the protective shell 1 can improve the sealing performance of the connection between the front closed end cover 5 and the protective shell 1. Similarly, the tight fit between the rear sealing ring 61 and the protective shell 1 can improve the sealing performance of the connection between the rear closed end cover 6 and the protective shell 1.

[0036] In addition, the fan assembly 7 continuously blows airflow into the mounting inner housing 2 during operation. When the airflow passes through the front closed end cover 5 of the rotor assembly, it will be scattered due to impact with the guide plate 8. Then it will flow back to the rear closed end cover 6 through the cooling air duct, and then be drawn into the mounting inner housing 2 by the fan assembly 7. This completes the circulation of airflow, so that heat can be continuously driven. The heat carried away will be absorbed and carried away by the coolant flowing in the spiral liquid cooling pipe 4, thus ensuring the high efficiency of heat dissipation measures inside the motor housing.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fully enclosed motor housing with a built-in heat dissipation mechanism, characterized in that, include: The protective shell (1) has a front closed end cover (5) fixedly installed at its front end and a rear closed end cover (6) fixedly installed at its rear end. The front closed end cover (5) has a through mounting hole in the middle, in which a sealing shaft cylinder (9) is installed. Install the inner shell (2), which is located inside the protective outer shell (1); A fan assembly (7) is fixedly installed inside the rear closed end cover (6) for blowing airflow into the mounting inner housing (2); Among them, the outer wall of the mounting inner shell (2) is fixedly provided with a number of arrayed connecting fins (3), the outer ends of which are fixedly connected to the protective shell (1), and the connecting fins (3) divide the annular cavity formed between the mounting inner shell (2) and the protective shell (1) into a number of cooling air channels, and a spiral liquid cooling pipe (4) is inserted in the connecting fins (3).

2. The fully enclosed motor housing with a built-in heat dissipation mechanism according to claim 1, characterized in that: The fan blade portion of the fan assembly (7) is completely located inside the mounting inner shell (2), and a guide plate (8) is fixedly installed inside the front closed end cover (5) to guide the airflow passing through the mounting inner shell (2) to the surrounding area and into the cooling air duct.

3. The fully enclosed motor housing with a built-in heat dissipation mechanism according to claim 1, characterized in that: The spiral liquid cooling tube (4) includes a spiral tube section (41) fixedly connected to the connecting fins (3), with a water inlet port (42) and a water outlet port (43) respectively sealed at both ends. The water inlet port (42) and the water outlet port (43) both extend out of the protective shell (1) and are sealed to the protective shell (1).

4. A fully enclosed motor housing with a built-in heat dissipation mechanism according to claim 3, characterized in that: The spiral tube section (41) runs horizontally through all the cooling air ducts, and the inner side of the spiral tube section (41) does not contact the mounting inner shell (2), and the outer side of the spiral tube section (41) does not contact the protective shell (1).

5. A fully enclosed motor housing with a built-in heat dissipation mechanism according to claim 1, characterized in that: The front and rear ends of the mounting inner shell (2) are both fixedly provided with rotor brackets (21), which are used to support and fix the rotor shaft of the motor.

6. A fully enclosed motor housing with a built-in heat dissipation mechanism according to claim 5, characterized in that: The rotor support (21) includes a bearing housing (211), and its outer wall is fixedly provided with a plurality of support spokes (212) arranged in a circular array. The outer ends of the support spokes (212) are fixedly connected to the inner wall of the protective shell (1).

7. A fully enclosed motor housing with a built-in heat dissipation mechanism according to claim 1, characterized in that: The opening of the front closed end cover (5) is fixedly provided with an outwardly protruding front sealing ring (51). After the front closed end cover (5) is installed, the front sealing ring (51) fits against the inner wall of the protective shell (1). The opening of the rear closed end cover (6) is fixedly provided with an outwardly protruding rear sealing ring (61). After the rear closed end cover (6) is installed, the rear sealing ring (61) fits against the inner wall of the protective shell (1).

8. A fully enclosed motor housing with a built-in heat dissipation mechanism according to claim 1, characterized in that: The front closed end cover (5) is provided with a fixed plate seat (52) in the middle. The sealing shaft cylinder (9) includes a cylinder body (91), which is equipped with a number of sealing rubber rings (92) and is fixedly provided with an mounting plate (93) on the outside. The mounting plate (93) is bolted to the fixed plate seat (52).

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