Motor cooling structure

Abstract

The utility model relates to the technical field of motor cooling, and discloses a motor cooling structure, which comprises a motor base, a drainage housing and a cooling fan, and a plurality of radiating ribs are arranged on the surface of the motor base in a protruding manner; the drainage housing is arranged around the motor base, an interlayer is formed between the drainage housing and the motor base, and the two ends of the drainage housing are open to form air outlets of the interlayer; the cooling fan is located on the outer side of the drainage housing, an air outlet of the cooling fan is connected with the drainage housing and is aligned with the middle position of the motor base, and the cooling fan is used for feeding cold air into the interlayer. According to the motor cooling structure, the drainage housing and the cooling fan are additionally arranged on the surface of the motor base to form cold air flow flowing from the middle to the two ends, so that the hottest position in the middle of the motor is cooled preferentially, the design is more reasonable, and the heat dissipation effect is better.

Description

Technical Field

[0001] This utility model relates to the field of motor cooling technology, and in particular to a motor cooling structure. Background Technology

[0002] With the development of electric motors, increasingly higher demands are being placed on their power density, meaning higher requirements are being placed on motor speed and current. However, higher speeds result in greater iron losses, and higher currents result in greater copper losses, leading to higher motor temperature rise. As power density increases, there is a risk of excessive temperature rise causing demagnetization of the magnets. Therefore, effective cooling media and methods are needed to remove heat and ensure reliable motor operation within a stable thermal cycle balance system.

[0003] Common cooling methods for electric motors include air cooling and liquid cooling. In situations where liquid cooling is unsuitable, natural cooling, relying on the motor's own thermal conductivity to radiate heat, is insufficient. An additional fan is needed to introduce cool air and dissipate the heat. Existing air-cooled motors have a fan (i.e., an axial fan) installed at the rear. However, this design limits the motor's axial dimension due to the fan's suction or delivery capacity, preventing uneven temperature distribution (lower temperature at one end and higher temperature at the other). Furthermore, the cool air cannot reach internal heat sources, such as the core and coils, immediately, affecting cooling efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a motor cooling structure to solve the problems mentioned in the background art, improve the entry and exit points of the cold air, and enhance the heat dissipation effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An electric motor cooling structure includes a motor frame, a cooling shroud, and a cooling fan, wherein:

[0007] The surface of the motor base has several raised heat dissipation fins;

[0008] The air intake cover is set around the motor base, and a sandwich is formed between the air intake cover and the motor base. The two ends of the air intake cover are open to form the air outlet of the sandwich.

[0009] The cooling fan is located on the outside of the air intake cover. The air outlet of the cooling fan is connected to the air intake cover and aligned with the middle of the motor base. The cooling fan is used to send cold air into the interlayer.

[0010] As an alternative, the flow guide cover is cylindrical, and an enhanced cooling zone is provided on the flow guide cover corresponding to the position of the internal iron core of the motor base. The cooling fan is installed on top of the enhanced cooling zone.

[0011] As an alternative, some of the heat dissipation fins are connected to the drainage cover, another part of the heat dissipation fins do not contact the drainage cover, and the remaining part of the heat dissipation fins pass through the drainage cover.

[0012] As an alternative, the drainage cover is welded to the motor base as a single unit.

[0013] The beneficial effects of this utility model are:

[0014] This motor cooling structure creates a cool airflow from the center outwards by adding a cooling shroud and a cooling fan to the surface of the motor base. This prioritizes cooling the hottest part of the motor, resulting in a more rational design and better heat dissipation. Attached Figure Description

[0015] Figure 1 This is a front view of the motor cooling structure provided in this embodiment of the utility model;

[0016] Figure 2 This is a side view of the motor cooling structure provided in an embodiment of this utility model.

[0017] In the attached image:

[0018] 1. Motor base; 2. Air intake cover; 3. Cooling fan; 4. Heat dissipation fins; 5. Jacket; 6. Air outlet; 7. Enhanced cooling zone. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0024] Please see Figure 1 and Figure 2 As shown, this embodiment provides a motor cooling structure, including a motor base 1, a cooling shroud 2, and a cooling fan 3, wherein:

[0025] The surface of the motor base 1 has several raised heat dissipation fins 4;

[0026] The air intake cover 2 is arranged around the motor base 1, and a sandwich 5 is formed between the air intake cover 2 and the motor base 1. The two ends of the air intake cover 2 are open to form the air outlet 6 of the sandwich 5.

[0027] The cooling fan 3 is located on the outside of the flow shroud 2. The air outlet 6 of the cooling fan 3 is connected to the flow shroud 2 and aligned with the middle position of the motor base 1. The cooling fan 3 is used to send cold air into the interlayer 5.

[0028] Therefore, by adding a cooling shroud 2 and a cooling fan 3 to the surface of the motor base 1, a cold airflow is formed from the middle to both ends, thus prioritizing the cooling of the hottest part in the middle of the motor. This design is more reasonable and the heat dissipation effect is better.

[0029] Optionally, the flow guide cover 2 is cylindrical, and an enhanced cooling zone 7 is provided on the flow guide cover 2 corresponding to the position of the internal iron core of the motor base 1. The cooling fan 3 is installed on the top of the enhanced cooling zone 7.

[0030] Therefore, based on the structure of each motor, the location of the air inlet is designed for the hottest part of the motor to further ensure the cooling effect.

[0031] Optionally, a portion of the heat dissipation fins 4 are connected to the drainage cover 2, another portion of the heat dissipation fins 4 do not contact the drainage cover 2, and the remaining portion of the heat dissipation fins 4 passes through the drainage cover 2.

[0032] Therefore, the heat dissipation fins 4 of different lengths on the surface of the motor base 1 can transfer heat to the interlayer 5, the drainage cover 2 and the outside, which is more conducive to radiating heat outward.

[0033] Optionally, the drainage cover 2 is welded to the motor base 1 as a whole.

[0034] Therefore, the layout of the junction box, feet, etc. on the surface of the original motor base 1 is not affected, and the size of the motor changes little, making it convenient to modify the existing motor.

[0035] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electric motor cooling structure characterized by comprising: It comprises a motor base (1), a flow guide shell (2) and a cooling fan (3), wherein: The surface of the motor base (1) is provided with several heat dissipation ribs (4); The flow guide shell (2) is arranged around the motor base (1), and a sandwich layer (5) is formed between the flow guide shell (2) and the motor base (1), both ends of the flow guide shell (2) are open to form air outlets (6) of the sandwich layer (5); The cooling fan (3) is located outside the flow guide shell (2), the air outlet (6) of the cooling fan (3) is connected to the flow guide shell (2) and is aligned with the middle position of the motor base (1), and the cooling fan (3) is used for sending cold air into the sandwich layer (5).

2. The motor cooling structure according to claim 1, characterized by The flow guide shell (2) is cylindrical, and a reinforced cooling area (7) is arranged on the flow guide shell (2) corresponding to the internal core position of the motor base (1), and the cooling fan (3) is installed on the top of the reinforced cooling area (7).

3. The motor cooling structure according to claim 1, characterized by A part of the heat dissipation ribs (4) are connected to the flow guide shell (2), another part of the heat dissipation ribs (4) do not contact the flow guide shell (2), and the remaining part of the heat dissipation ribs (4) passes through the flow guide shell (2).

4. The motor cooling structure according to claim 1, characterized by The flow guide shell (2) and the motor base (1) are welded as a whole.

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