Heat dissipation wind deflector and motor using same

Abstract

The utility model discloses a heat dissipation air deflector cover and motor using same, include: the cover casing body that forms the air deflector cavity, be located first open end of one side end surface of cover casing body to and be located second open end of another side end surface of cover casing body and with first open end vertical intercommunication, still design the air inlet window of one side end surface of cover casing body and be located the opposite side of first open end, form the air inlet on air inlet window, first open end, second open end and air inlet all with the air deflector cavity is through -going. The heat dissipation air deflector cover and motor using same of the utility model can give consideration to the simplification of structure and satisfy the heat dissipation demand of motor assembly and control box simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a heat dissipation duct and a motor using the same. Background Technology

[0002] During the process of converting electrical energy into mechanical energy, electric motors experience some energy loss, which is converted into heat, raising the motor's temperature. Therefore, motors are typically equipped with cooling systems to regulate their operating temperature and ensure normal operation. Air cooling is the most common form of motor cooling.

[0003] In response, CN222868693U discloses an air-cooled motor, which uses an air guide shroud to cover the fan, rear end cover, and stator assembly. This shroud is a cylindrical body with one open end, surrounding the outer periphery of the motor body to dissipate heat generated during motor operation. This cooling method is generally suitable for low-power or low-power-density motors. However, for high-power or high-power-density permanent magnet DC motors, not only does the motor body generate significant heat, but the control board also generates considerable heat under high loads. The combined heat from both makes the overall heat dissipation problem more severe. If not effectively addressed, this could reduce motor efficiency, shorten the lifespan of the control board, and even pose safety hazards.

[0004] In addition, in some existing technologies, such as the motor disclosed in CN222868693U, the control board is designed on the outside of the motor body. That is, a control box for accommodating the control board is set on the outside of the motor body. For motors with this type of design, if the motor body and the control box are designed with structures to accelerate heat dissipation, the heat dissipation requirements can be met. However, this will increase the complexity of the overall motor structure and the cumbersome process of assembling the components, thereby increasing the design and production costs of the product.

[0005] Therefore, for the case of the motor body and control box being designed separately, a new heat dissipation structure needs to be designed in the motor to find a simplified structure that can simultaneously meet the heat dissipation requirements of both the motor body and the control box. Utility Model Content

[0006] The primary objective of this invention is to provide a heat dissipation duct to address the technical problem of optimizing its performance.

[0007] The second objective of this invention is to provide a motor that solves the technical problem of balancing structural simplification with heat dissipation requirements for both the motor body and the control box.

[0008] The heat dissipation shroud of this utility model is implemented as follows:

[0009] A heat dissipation duct includes: a housing with an air guide cavity, a first opening end disposed on one side end face of the housing, and a second opening end disposed on the other side end face of the housing and perpendicularly connected to the first opening end.

[0010] Another side end face of the housing, opposite to the first opening end, is also designed with an air inlet window; an air inlet is formed on the air inlet window;

[0011] The first opening end, the second opening end, and the air inlet are all connected to the air guide cavity.

[0012] In one alternative implementation, the air intake window is integrally formed with the housing.

[0013] In one alternative embodiment, the housing is designed with a mounting port for assembling the air intake window; and

[0014] The air intake window is detachably assembled onto the mounting port.

[0015] The motor of this utility model is implemented as follows:

[0016] An electric motor, comprising:

[0017] The motor assembly has a guide fan on one shaft side end;

[0018] A control assembly, which includes at least a control box and a control board built into the control box and electrically connected to the motor assembly;

[0019] Heat dissipation shroud; among which

[0020] The motor assembly is adapted to be partially inserted into and secured in the air guide cavity along its axial direction from the first opening end, such that the air guide fan faces the air intake window; and

[0021] The control box is connected and fixed to the second opening end so that the air guide cavity can simultaneously connect the motor assembly and the control assembly.

[0022] In one alternative implementation, a radial spacing is formed between the outer wall of the motor assembly and the inner wall of the air guide cavity to create a channel suitable for gas flow.

[0023] In one alternative implementation, a pair of side edges extending axially along the motor assembly at the second open end are respectively designed with support steps for supporting the control box.

[0024] The control box is adapted to be mounted on a pair of support steps.

[0025] In one alternative implementation, the support step is folded outward or inward relative to the air guide cavity.

[0026] In an alternative implementation, the support step is connected to the control box via fasteners.

[0027] In an alternative implementation, the support step is also designed with a connecting piece for fastening with the control box.

[0028] In an alternative implementation, the connecting piece extends axially along the motor assembly such that the connecting piece and the support step form an L-shaped support connection structure adapted to the control box.

[0029] In one alternative implementation, the end face of the control box facing the air guide cavity is designed with multiple raised heat dissipation fins.

[0030] By adopting the above technical solution, this utility model has the following beneficial effects: The heat dissipation shroud and the motor using it of this utility model, through the first and second opening ends designed on the shroud housing for communicating with the air guide cavity, respectively form suitable mating ends for the motor assembly and the control assembly with the air guide cavity. This allows the air guide cavity of a single heat dissipation shroud to simultaneously provide air cooling for both the motor assembly and the control assembly, thereby avoiding the structural complexity caused by designing separate heat dissipation structures for the control assembly and the motor assembly. Therefore, the heat dissipation shroud and the motor using it of this utility model can achieve both structural simplification and simultaneously meet the heat dissipation requirements for both the motor assembly and the control box. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the heat dissipation shroud of Embodiment 1 of this utility model;

[0032] Figure 2 This is a schematic diagram of the overall structure of the motor in Embodiment 2 of this utility model;

[0033] Figure 3 This is a schematic diagram of the split structure of the motor in Embodiment 2 of this utility model;

[0034] Figure 4 This is a cross-sectional view of the motor in Embodiment 2 of this utility model;

[0035] Figure 5 This is a schematic diagram of the motor control box of Embodiment 2 of this utility model.

[0036] In the figure: housing 1, first opening end 11, second opening end 12, air inlet 13, air guide cavity 14, connecting hole 15, stator assembly 2, rotor assembly 3, front end cover 41, rear end cover 42, guide fan 43, rotor shaft 44, control box 51, control board 52, display board 53, heat dissipation fins 54, housing 6, connecting part 7, support step 81, connecting piece 82. Detailed Implementation

[0037] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0038] Example 1:

[0039] Please see Figure 1 As shown, this embodiment provides a heat dissipation shroud, including: a shroud housing 1 with an air guide cavity 14, a first opening end 11 located on one side end face of the shroud housing 1, and a second opening end 12 located on another side end face of the shroud housing 1 and perpendicularly connected to the first opening end 11; an air inlet window 13 is also designed on another side end face of the shroud housing 1 opposite to the first opening end 11. Accordingly, the first opening end 11, the second opening end 12, and the air inlet window 13 are respectively located on three different side end faces of the shroud housing 1.

[0040] Regarding the shape of the air guide cavity 14, it can theoretically be regular or irregular. The shape is determined based on the specific shape of the motor assembly in which the heat dissipation shroud is applied, allowing the shroud to better fit the motor assembly and ensure reliable heat dissipation. The accompanying drawings of this embodiment only illustrate the case where the air guide shroud is approximately cuboid; in this case, the shapes of the first opening end 11 and the second opening end 12 are both approximately rectangular.

[0041] Based on the above structure, it should be noted that an air inlet is formed on the air intake window 13. Preferably, multiple air inlets are provided here, and generally speaking, the overall air intake window 13 can be, for example, but not limited to, a circular structure. The multiple air inlets can be arranged at intervals along the circumferential direction or at intervals along the radial direction. It should be noted that the first opening end 11, the second opening end 12, and the air inlets all communicate with the air guide cavity 14.

[0042] Regarding the fitting method between the air intake window 13 and the housing 1: Firstly, the air intake window 13 is integrally formed with the housing 1. This method is easy to manufacture and eliminates the assembly process. Secondly, the housing 1 is designed with a mounting port for assembling the air intake window 13; and the air intake window 13 is detachably assembled to the mounting port. This method facilitates cleaning of the air intake window 13. Both of these methods meet the usage requirements of this embodiment, and this embodiment does not impose absolute limitations on either.

[0043] Finally, it should be noted that the heat dissipation shroud of this embodiment is easy to process and convenient to assemble with applications such as motors.

[0044] Example 2:

[0045] Please see Figures 1 to 5 As shown, based on the heat dissipation shroud of Embodiment 1, this embodiment provides a motor, which includes a motor assembly, a control assembly, and a heat dissipation shroud as in Embodiment 1.

[0046] Specifically, the first aspect is the motor assembly, which can be understood to include at least a stator assembly 2 and a rotor assembly 3 used in conjunction. Regarding this motor assembly, it should be noted that in the first optional embodiment, it also includes a housing 6, within which the stator assembly 2 is housed. Furthermore, one axial end of the housing 6 has a rear end cover 42, and the other axial end has a front end cover 41. One end of the rotor shaft 44 of the rotor assembly 3 extends beyond the front end cover 41, and the other end extends beyond the rear end cover 42. A guide fan 43 is disposed at the end of the rotor shaft 44 extending beyond the rear end cover 42. In the second optional embodiment, the housing 6 is not provided; instead, the front end cover 41 and the rear end cover 42 are directly connected to the stator assembly 2, while other structures remain largely the same. Theoretically, both of these different motor assembly configurations meet the usage requirements of this embodiment, and therefore, this embodiment does not impose absolute limitations on them.

[0047] Secondly, the control component includes at least a control box 51 and a control board 52 built into the control box 51 and electrically connected to the motor assembly; it is understood that the control component here may also include a display board 53 connected to the control board 52.

[0048] Based on the above, the following section will focus on the cooperation between the heat dissipation shroud, the motor assembly, and the control assembly.

[0049] Firstly, the fit between the heat dissipation shroud and the motor assembly:

[0050] Generally, the motor assembly is adapted to be partially inserted into and secured in the air guide cavity 14 from the first opening end 11 along its axial direction, such that the air guide fan 43 faces the air intake window 13.

[0051] It should be noted that, regarding the length of the housing 1 along the axial direction of the motor assembly, it can accommodate all parts of the motor assembly except for the rotor shaft 44 extending to the outside of the front cover 41, which does not enter the air guide cavity 14. Alternatively, when the motor assembly and housing 1 are assembled in place, if a housing 6 is designed, the fan 43, the rear cover 42, and most of the housing 6 (the stator assembly 2 and the rotor assembly 3 are built into the housing 6) are accommodated in the air guide cavity 14, with a small portion of the housing 6 located outside the first opening end 11 of the air guide cavity 14; if a housing 6 is not designed, the fan 43, the rear cover 42, and most of the stator assembly 2 (the rotor assembly 3 is located inside the stator assembly 2) are accommodated in the air guide cavity 14, with a small portion of the stator assembly 2 located outside the first opening end 11 of the air guide cavity 14.

[0052] Furthermore, it should be noted that a radially spaced channel is formed between the outer wall of the motor assembly and the inner wall of the air guide cavity 14 to facilitate gas flow. To achieve this channel, in the first case, when the motor assembly has a housing 6, multiple protruding connecting portions 7 can be spaced circumferentially on the outer wall of the housing 6. Connecting holes 15, which mate one-to-one with the connecting portions 7, are designed on the housing 1. The corresponding connecting portions 7 and connecting holes 15 are connected by fasteners, such as but not limited to screws, thereby establishing a reliable connection between the motor assembly and the housing 1. In the second case, whether the motor assembly has a housing 6 or not, multiple protruding connecting portions 7 can be spaced circumferentially on the outer wall of the rear end cover 42. Connecting holes 15, which mate one-to-one with the connecting portions 7, are designed on the housing 1. The corresponding connecting portions 7 and connecting holes 15 are connected by fasteners, such as but not limited to screws, thereby establishing a reliable connection between the motor assembly and the housing 1. The above situations theoretically meet the usage requirements of this embodiment, and this embodiment does not make absolute limitations on them. Furthermore, the height of the protrusion of the connecting part 7 relative to the outer wall of the housing 6 or the rear cover 42 can be approximately equal to the width of the channel between the outer wall of the motor assembly and the inner wall of the air guide cavity 14.

[0053] Secondly, the coordination between the heat dissipation shroud and the control components:

[0054] Generally, the control box 51 is connected and fixed to the second opening end 12 so that the air guide cavity 14 simultaneously connects the motor assembly and the control assembly. The overall control box 51 may be in the shape of, for example but not limited to, an approximate cuboid, which is regular and easy to process, and the formed control box 51 can be adapted to the shape of the second opening end 12, so that the two can be easily assembled and fixed together.

[0055] Based on the above, and more specifically, referring to the accompanying drawings, one embodiment is described where a pair of side edges extending axially along the motor assembly from the second opening end 12 are respectively designed with support steps 81 for supporting the control box 51; the control box 51 is adapted to rest on the pair of support steps 81. The support steps 81 here can theoretically be folded outwards or inwards relative to the air guide cavity 14, both satisfying the usage requirements of this embodiment. Preferably, each support step 81 here is folded at 90 degrees relative to the pair of side edges extending axially along the motor assembly from the second opening end 12.

[0056] Furthermore, regarding the control box 51 supported by the support step 81, in a first optional implementation, the support step 81 is directly connected to the control box 51 by fasteners such as, but not limited to, screws. In this case, mounting holes suitable for screws can be designed on the overlapping walls formed by the support step 81 and the control box 51. Considering the convenience of manual screw tightening, the support step 81 is folded outwards relative to the air guide cavity 14, so that the screw tightening operation is not limited or interfered with by the space of the air guide cavity 14.

[0057] In the second alternative implementation, the support step 81 is also designed with a connecting piece 82 for fastening with the control box 51. The connecting piece 82 is approximately perpendicular to the support step 81. This angle is designed so that the support step 81 and the connecting piece 82 can be connected to the two mutually perpendicular side surfaces of the control box 51 respectively. In this regard, it should also be noted that in this case, the support step 81 can be folded outward or inward relative to the air guide cavity 14 to facilitate connection with the control box 51. Regardless of whether it is folded inward or outward, the connecting piece 82 is connected to the side end of the support step 81 along the axial direction of the motor assembly and relatively away from the other support step 81. That is, the entire connecting piece 82 extends along the axial direction of the motor assembly so that the connecting piece 82 and the support step 81 form an L-shaped support connection structure adapted to the control box 51. This allows the support step 81 to support the bottom of the control box 51, while the connecting piece 82 achieves a tight fit with the side wall of the control box 51. It can be understood that when the support step 81 is folded outward relative to the air guide cavity 14, both the connecting piece 82 and the support step 81 can achieve a tight fit with the control box 51 through fasteners.

[0058] Furthermore, it should be noted that, from the perspective of one side edge extending axially along the motor assembly from the second opening end 12, both the support step 81 and the connecting piece 82 can be directly and integrally connected to the side edge of the second opening end 12 to form a long strip structure, or they can be at least two segmented structures spaced apart along the side edge of the second opening end 12. Theoretically, both of these situations meet the usage requirements of this embodiment, and this embodiment does not impose absolute limitations on them. From a manufacturing perspective, both the support step 81 and the connecting piece 82 are long strip structures, and both extend to the side end face of the housing 1 where the exhaust window is designed. This can improve the strength of the connecting piece 82 and the support step 81. Optionally, both the support step 81 and the connecting piece 82 can be integrally formed with the housing 1.

[0059] In an optional implementation, this embodiment features multiple raised heat dissipation ribs 54 on the end face of the control box 51 facing the air guide cavity 14. These heat dissipation ribs 54 extend axially along the motor assembly, creating slots between adjacent ribs to facilitate airflow. Air flows through these slots within the air guide cavity 14, allowing it to fully contact the heat dissipation ribs 54 and the outer wall of the control box 51, carrying away the heat generated during the operation of the control board 52. Furthermore, regarding the heat dissipation ribs 54 designed in this embodiment, when the control box 51 is assembled with the housing 1, the heat dissipation ribs 54 abut against the outer wall of the motor assembly housing 6 or the stator assembly 2. This means that, considering the typical configuration where the motor assembly is below and the control assembly is above, the motor assembly also provides partial support for the control assembly.

[0060] In summary, for the motor in this embodiment, the heat dissipation shroud can simultaneously provide air-cooled heat dissipation for both the control components and the motor components, thereby synchronously meeting the heat dissipation requirements of both components. Furthermore, both the motor components and the heat dissipation shroud, as well as the control components and the heat dissipation shroud, are easy to assemble and disassemble. Specifically, before the heat dissipation shroud is assembled with the control box 51, the shroud 1 forms a semi-enclosed structure around the circumferential outer wall of the motor components. After the control box 51 and the heat dissipation shroud are assembled, the control box 51, combined with the shroud 1, forms a fully enclosed structure around the circumferential outer wall of the motor components, ensuring that airflow can only flow within the air guide cavity 14 and cannot diffuse outwards, thus improving heat dissipation efficiency. When the motor assembly is working, the fan 43 rotates and drives air into the air chamber 14 through the air inlet 13. Because the rear cover 42 is a sealed structure, the airflow cannot enter the interior of the motor assembly. It can only flow along the channel formed by the inner wall of the air chamber 14 and the outer wall of the motor assembly, as well as the slot formed between the adjacent heat dissipation fins 54 on the control box 51. This allows the airflow to simultaneously carry away the heat generated by the control assembly and the motor assembly, thus achieving the purpose of simultaneously cooling the motor assembly and the control assembly with a heat dissipation shroud and a fan 43.

[0061] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0062] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.

[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 according to the specific circumstances.

[0064] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0065] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0066] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may 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" the first 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 first 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.

Claims

1. A heat dissipation duct, characterized in that, include: A housing having an air guide cavity, a first opening end on one side end face of the housing, and a second opening end on the other side end face of the housing that is perpendicularly connected to the first opening end; Another side end face of the housing, opposite to the first opening end, is also designed with an air inlet window; an air inlet is formed on the air inlet window; The first opening end, the second opening end, and the air inlet are all connected to the air guide cavity.

2. The heat dissipation duct according to claim 1, characterized in that, The air intake window is integrally formed with the housing.

3. The heat dissipation duct according to claim 1, characterized in that, The housing is designed with a mounting port for assembling the air intake window; and The air intake window is detachably assembled onto the mounting port.

4. An electric motor, characterized in that, include: The motor assembly has a guide fan on one shaft side end; A control assembly, which includes at least a control box and a control board built into the control box and electrically connected to the motor assembly; The heat dissipation shroud as described in any one of claims 1 to 3; in The motor assembly is adapted to be partially inserted into and secured in the air guide cavity along its axial direction from the first opening end, such that the air guide fan faces the air intake window; and The control box is connected and fixed to the second opening end so that the air guide cavity can simultaneously connect the motor assembly and the control assembly.

5. The motor according to claim 4, characterized in that, A radial spacing is formed between the outer wall of the motor assembly and the inner wall of the air guide cavity to create a channel suitable for gas flow.

6. The motor according to claim 4 or 5, characterized in that, The second opening end has a pair of side edges extending axially along the motor assembly, each designed with a support step for supporting the control box. The control box is adapted to be mounted on a pair of support steps.

7. The motor according to claim 6, characterized in that, The supporting steps are folded outwards or inwards relative to the air guide cavity.

8. The motor according to claim 7, characterized in that, The support step is connected to the control box by fasteners.

9. The motor according to claim 6, characterized in that, The support step is also designed with a connecting piece for fastening with the control box.

10. The motor according to claim 9, characterized in that, The connecting piece extends axially along the motor assembly so that the connecting piece and the support step form an L-shaped support connection structure adapted to the control box.

11. The motor according to claim 4 or 5, characterized in that, The control box has multiple raised heat dissipation fins on the end face facing the air guide cavity.

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