Motor heat dissipation device and motor

Abstract

The application discloses a motor heat dissipation device and a fan. The motor heat dissipation device comprises a flow guide cover which is detachably installed on the peripheral wall at the shaft extension end of a motor shell; an air inlet which is arranged on the side of the flow guide cover close to the fan at the tail of the motor and is used for gathering axial airflow; and a flow guide fin which is arranged on the end wall at the shaft extension end of the motor shell and is used for diverting the axial airflow provided by the fan at the tail of the motor into radial airflow. One end of the flow guide fin is connected to the edge of the flow guide cover on the opposite side of the air inlet, and the other end of the flow guide fin extends in the direction of the center of the shaft extension end of the motor perpendicularly to the flow guide cover and forms an air outlet at the extension end. According to the application, the axial airflow is ingeniously converted into radial airflow through the cooperation of the flow guide cover and the flow guide fin, the bearing and the end cover at the shaft extension end of the motor are precisely cooled, the problem that the axial airflow is difficult to cover the shaft extension end in the traditional cooling mode is solved, and the cooling efficiency is remarkably improved.

Description

Technical Field

[0001] This application generally relates to the field of motor thermal management technology. More specifically, this application relates to a motor heat dissipation device; further, this application also relates to a motor. Background Technology

[0002] During motor operation, the tail fan dissipates heat by generating axial airflow. However, this cooling method primarily targets the non-shaft extension end of the motor, offering poor heat dissipation for the radial end caps and bearing areas of the shaft extension end, resulting in higher temperatures at the shaft extension end compared to the non-shaft extension end. In existing technologies, the airflow direction generated by the tail fan cannot be altered, making it difficult to effectively cover the high-temperature area at the shaft extension end. While supplementary measures such as adding external axial fans exist, these increase cost and complexity.

[0003] In view of this, there is an urgent need to provide a motor cooling device and a motor, so as to optimize the heat dissipation effect without changing the original design of the motor. Utility Model Content

[0004] In order to at least solve one or more of the technical problems mentioned above, this application proposes a heat dissipation device and a motor for improving the heat dissipation effect at the motor shaft extension end in several aspects.

[0005] In a first aspect, this application provides a motor cooling device, comprising: a shroud detachably mounted on the peripheral wall of the shaft extension end of a motor housing; an air inlet disposed on the side of the shroud near the fan at the tail of the motor for gathering axial airflow; and a guide vane disposed on the end wall of the shaft extension end of the motor housing for redirecting the axial airflow provided by the fan at the tail of the motor into radial airflow; one end of the guide vane is connected to the edge of the shroud on the opposite side of the air inlet, and the other end extends perpendicularly to the shroud toward the center of the shaft extension end of the motor, and the extended end forms an air outlet.

[0006] In some embodiments, the upper end of the flow guide is provided with a cutout to avoid the motor junction box.

[0007] In some embodiments, the perforated portion is connected to the air inlet.

[0008] In some embodiments, the fairing is fixed to the motor housing by a clamp or flange connection.

[0009] In some embodiments, the flow guide includes a first flow guide and a second flow guide connected by fasteners, wherein the fasteners adjust the span width of the flow guide by adjusting the distance between the first flow guide and the second flow guide.

[0010] In some embodiments, a first elongated first extension is provided on the first air guide, and a second elongated second extension is provided on the second air guide. The first extension and the second extension constitute a sidewall of the hollow portion. Both the first extension and the second extension have a plurality of spaced mounting holes. Fasteners are inserted into different mounting holes on the first extension and the second extension to adjust the span width of the air guide.

[0011] In a second aspect, this application provides an electric motor that includes the aforementioned motor cooling device.

[0012] The motor cooling device described above, in this embodiment, cleverly transforms axial airflow into radial airflow through the cooperation of the guide shroud and guide vanes. This precisely dissipates heat from high-temperature areas such as bearings and end covers at the motor shaft extension, effectively solving the problem of axial airflow failing to cover the shaft extension in traditional cooling methods and significantly improving cooling efficiency. Furthermore, in some embodiments, a perforated portion is provided to avoid obstructing the motor junction box. Furthermore, in some embodiments, fasteners are used to adjust the width of the guide shroud to accommodate different motors. Attached Figure Description

[0013] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, and the same or corresponding reference numerals denote the same or corresponding parts, wherein: Figure 1 A three-dimensional structural schematic diagram of the motor heat dissipation device according to an embodiment of this application is shown; Figure 2 A front view of the motor cooling device according to an embodiment of this application is shown; Figure 3 A top view of a motor cooling device according to an embodiment of this application is shown; Figure 4 A left view of a motor cooling device according to an embodiment of this application is shown.

[0014] In the diagram: 100, motor cooling device; 101. Air guide cover; 102. Air guide plate; 103. Air outlet; 104. Hollowed-out section. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] It should be understood that the terms "comprising" and "including" used in the specification and claims of this application indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0017] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0018] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0019] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, in some embodiments, this application provides a motor cooling device 100, including: a flow guide shroud 101, which is detachably mounted on the peripheral wall of the shaft extension end of the motor housing; an air inlet, which is disposed on the side of the flow guide shroud 101 near the fan at the tail of the motor, for gathering axial airflow; and a flow guide plate 102, which is disposed on the end wall of the shaft extension end of the motor housing, and for turning the axial airflow provided by the fan at the tail of the motor into radial airflow; one end of the flow guide plate 102 is connected to the edge of the flow guide shroud 101 on the opposite side of the air inlet, and the other end extends perpendicularly to the flow guide shroud 101 toward the center of the shaft extension end of the motor, and the extended end forms an air outlet 103.

[0021] The fan cooling device provided in this application mainly includes two parts: a shroud 101 and a guide vane 102. Specifically, the shroud 101 has an arc-shaped structure and is detachably mounted on the peripheral wall of the motor housing shaft extension end. In other words, this detachable design does not require any modification to the original structure of the motor; it is fixed only by clips, bolts, etc., making installation and disassembly convenient and highly adaptable.

[0022] It is worth noting that the size of the fairing 101 is not specifically limited in this application; it can be limited according to specific needs. For example, the end face of the fairing 101 can be designed as a semi-circular structure. This design not only meets the needs of different motors or installation environments but also improves heat dissipation efficiency to a certain extent, while taking into account the convenience of installation and use.

[0023] In addition, an air inlet is provided on the side of the shroud 101 near the tail fan of the motor. The function of this air inlet is to actively gather the axial airflow generated by the tail fan of the motor. In other words, since the airflow of the tail fan originally flows axially, the air inlet can concentrate the dispersed axial airflow and introduce it into the interior of the motor heat dissipation device 100, reducing the loss of airflow during transmission and improving the airflow utilization rate.

[0024] The air guide vane 102, mounted on the end wall of the motor housing shaft extension, is a key component for achieving airflow deflection. One end is connected to the edge of the air guide shroud 101 on the opposite side of the air inlet, while the other end extends perpendicularly to the air guide shroud 101 towards the center of the motor shaft extension, forming an air outlet 103, which is smaller than the air inlet. The air guide vane 102 provided in this application can forcibly deflect the axial airflow introduced by the air inlet into radial airflow, and precisely blow it through the air outlet 103 towards high-temperature areas such as the end cover and bearings of the shaft extension, directly carrying away heat.

[0025] When the motor is running, the axial airflow generated by the tail fan flows along the motor housing. Part of the airflow is gathered and introduced into the device through the air inlet of the guide shroud 101. Under the guidance of the guide vane 102, the axial airflow is forced to turn into radial airflow and flows towards the center of the shaft extension end along the extension direction of the guide vane 102. Finally, it is blown directly onto the high-temperature components such as the end cover and bearing through the air outlet 103, so as to achieve rapid heat dissipation.

[0026] The motor cooling device 100 provided in this application concentrates airflow inside the cooling device through a guide shroud 101, and converts the axial airflow into radial airflow through guide vanes 102, precisely acting on the end cover and bearing at the shaft extension end. This solves the problem that traditional tail fans can only dissipate heat axially and have insufficient heat dissipation at the shaft extension end, significantly reducing the temperature of key components at the shaft extension end and avoiding the risk of motor burnout or shaft seizure due to prolonged high temperatures. In addition, the solution of this application utilizes the airflow of the motor's own tail fan, achieving enhanced heat dissipation through the guide shroud 101 and guide vanes 102, eliminating the need for an additional axial fan or external power supply, simplifying the equipment structure, and reducing additional energy consumption and costs.

[0027] In one specific implementation, the upper end of the flow guide 101 is provided with a hollow portion 104 to avoid the motor junction box.

[0028] In this application, the upper surface of the air guide 101 is provided with a cutout portion 104 to avoid the motor junction box. The main function of the cutout portion 104 is to leave space for the motor junction box and avoid mutual interference during assembly. When the motor heat dissipation device 100 is assembled into the motor, the cutout portion 104 passes through the motor junction box, ensuring that the air guide 101 can be accurately and securely installed on the motor peripheral wall.

[0029] like Figure 1 As shown, in one specific implementation, the perforated portion 104 is connected to the air inlet.

[0030] In the motor cooling device 100 of this application, a hollow portion 104 is provided at the upper end of the air guide shroud 101. This hollow portion 104 is mainly used to avoid the junction box of the motor, so as to adapt to the original structural layout of the motor. The hollow portion 104 is connected to an air inlet located on the opposite side of the air outlet, that is, the air inlet is located on the side of the air guide shroud 101 near the fan at the tail of the motor. The hollow portion 104 in this application not only makes the disassembly of the motor cooling device 100 easier, but also cleverly avoids the protruding structure of the junction box during installation.

[0031] In some embodiments, the flow guide 101 is fixed to the motor housing by a clamp or flange connector.

[0032] In this application, the fairing 101 is fixed to the motor housing via a clamp or flange connector. Specifically, the clamp is a ring-shaped fastening structure that can be adjusted according to the curvature of the motor housing's peripheral wall, and can fit tightly against the motor's peripheral wall when tightened. The flange connector achieves a rigid connection by engaging with the corresponding mounting position on the motor housing or a suitable flange seat through pre-set bolt holes. Both types of connectors are detachable, ensuring the stability of the fairing 101 during operation, simplifying the installation and maintenance process, and improving the versatility and practicality of the device.

[0033] In one specific embodiment, the flow guide 101 includes a first flow guide and a second flow guide connected by fasteners. The fasteners adjust the span width of the flow guide 101 by adjusting the distance between the first and second flow guides. The first flow guide has a long, elongated first extension, and the second flow guide has a long, elongated second extension. The first and second extensions form a sidewall of the hollow portion 104. Both the first and second extensions have multiple spaced mounting holes. Fasteners are inserted into different mounting holes on the first and second extensions to adjust the span width of the flow guide 101.

[0034] In this application, the fairing 101 adopts a split structure design, that is, the fairing 101 consists of two parts: a first fairing and a second fairing, which are connected and fixed by fasteners. In use, the overall width of the fairing 101 can be flexibly changed by adjusting the distance between the first fairing and the second fairing to adapt to motors of different models or sizes.

[0035] Specifically, the first guide shield has a long, narrow first extension, and the second guide shield also has a corresponding long, narrow second extension. These two extensions not only together form a sidewall (not shown in the figure) of the upper hollow portion 104 of the guide shield 101, but also become a key structure for adjusting the width. Multiple spaced mounting holes are distributed on both the first and second extensions. Fasteners such as bolts and screws can be inserted into the mounting holes at different positions to change the relative distance between the first and second guide shield cylinders: when the fastener is inserted into a mounting hole with a closer spacing, the distance between them decreases, and the span width of the guide shield 101 decreases; when the fastener is inserted into a mounting hole with a wider spacing, the distance between them increases, and the span width increases accordingly.

[0036] This adjustment method eliminates the need for separate design of the guide shield 101 for different motors. Without changing the original structure of the motor, the guide shield 101 can be tightly fitted to the peripheral wall of the shaft extension end of motor housings of different sizes by flexibly adjusting the span width. This not only ensures the installation stability of the guide shield 101, but also significantly improves the versatility and applicability of the device, and reduces the cost of adapting to different motors.

[0037] In a second aspect, this application provides an electric motor that includes the aforementioned electric motor cooling device 100.

[0038] The motor provided in this application mainly includes a motor body and the aforementioned motor heat dissipation device 100. The motor heat dissipation device 100, as a key heat dissipation component, is integrated with the motor body in a detachable manner. Specifically, the air guide shroud 101 of the heat dissipation device is fixed to the peripheral wall of the shaft extension portion of the motor housing using clamps or flange connectors. The entire installation process does not require any destructive processing such as drilling or welding on the original motor housing, thus completely preserving the original structural design of the motor body. At the same time, the hollow portion 104 at the upper end of the air guide shroud 101 can precisely avoid the motor's junction box, ensuring that the installation of the heat dissipation device will not affect the normal wiring and operation of the motor. In addition, the air guide plate 102 is set on the end wall of the shaft extension end of the motor housing, with one end connected to the edge of the air guide shroud 101 and the other end extending to the center of the shaft extension end, forming an airflow channel covering the high-temperature areas such as the end cover and bearings.

[0039] The motor provided in this application gathers the axial airflow generated by the tail fan of the motor through the guide shroud 101. After being turned into radial airflow by the guide vane 102, the airflow blows directly onto the end cover and bearing of the shaft extension through the air outlet 103, effectively removing heat. This design solves the problem that the tail fan of the traditional motor can only achieve axial heat dissipation, resulting in high temperature at the shaft extension end, thereby avoiding the risk of motor burnout or shaft seizure that may be caused by long-term high-temperature operation.

[0040] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A motor cooling device, characterized in that, include: A fairing (101) is detachably mounted on the peripheral wall at the shaft extension end of the motor housing; An air inlet, located on the side of the shroud (101) near the tail fan of the motor, is used to gather axial airflow; and A guide vane (102) is disposed on the end wall of the shaft extension end of the motor housing and is used to turn the axial airflow provided by the fan at the tail of the motor into radial airflow. One end of the guide vane (102) is connected to the edge of the guide shroud (101) on the opposite side of the air inlet, and the other end extends perpendicularly to the guide shroud (101) toward the center of the motor shaft extension end, and the extended end forms an air outlet (103).

2. The motor cooling device according to claim 1, characterized in that, The upper end of the flow guide (101) is provided with a hollow part (104) to avoid the motor junction box.

3. The motor cooling device according to claim 2, characterized in that, The hollowed-out part (104) is connected to the air inlet.

4. The motor cooling device according to claim 1, characterized in that, The flow guide (101) is fixed to the motor housing by a clamp or flange connector.

5. The motor cooling device according to any one of claims 2-4, characterized in that, The flow guide (101) includes a first flow guide and a second flow guide connected by fasteners. The fasteners adjust the span width of the flow guide (101) by adjusting the distance between the first flow guide and the second flow guide cylinder.

6. The motor cooling device according to claim 5, characterized in that, The first flow guide is provided with a long strip-shaped first extension, and the second flow guide is provided with a long strip-shaped second extension. The first extension and the second extension constitute a sidewall of the hollow part (104). Both the first extension and the second extension have multiple spaced mounting holes. Fasteners are inserted into different mounting holes on the first extension and the second extension to adjust the span width of the shroud (101).

7. An electric motor, characterized in that, It includes the motor cooling device (100) as described in any one of claims 1-6.

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