A cooling fan for a new energy engineering machinery thermal management system

Abstract

The utility model relates to a heat dissipation fan for new energy engineering machinery heat management system, including fan frame and fan blade component, the fan blade component cancels the wind ring structure, and the fan blade outer edge is equipped with the reinforcing rib for promoting structural strength, the fan blade tip and fan frame are line -surface gap structure, even in the dust or dynamic balance failure condition, also can avoid the contact with the inner wall, and the fan frame adopts aluminium alloy integral casting process, and the structural strength is high, and the inner wall is smooth, and it is convenient to clean up. This structure can effectively reduce the dynamic balance failure and friction abnormal sound caused by dust, has good shock resistance and self -cleaning ability, is applicable to the electronic fan use under the severe working condition of high dust, heavy load etc.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for engineering equipment, and in particular to a cooling fan for a thermal management system of new energy engineering machinery. Background Technology

[0002] With the widespread application of new energy construction machinery, electric fans in thermal management systems are gradually replacing traditional engine-driven fans, undertaking the critical task of heat dissipation. However, in high-dust environments such as coal mines, sand and gravel pits, and tunnels, the existing electric fan structure is prone to foreign matter adhering to the blades and the inner wall of the air guard, causing problems such as dust accumulation, dynamic balance failure, and friction noise. Even with a reverse dust removal strategy, it is difficult to effectively remove the adhered foreign matter, resulting in high maintenance costs, poor reliability, and seriously affecting the overall user experience and lifespan of the machine. Therefore, it is urgent to improve the existing electric fan structure to meet the stable operation requirements of harsh non-road working conditions. Utility Model Content

[0003] The technical problem solved by this invention is that the existing electronic fan structure is prone to foreign objects adhering between the fan blades and the inner wall of the wind guard ring, resulting in dust accumulation, dynamic balance failure, and abnormal friction noise.

[0004] To solve the above-mentioned technical problems, the present invention provides a cooling fan for a thermal management system of new energy engineering machinery, comprising:

[0005] Fan frame, fan blade assembly;

[0006] The fan blade assembly does not have a windproof ring structure, but the outer edge of the fan blades of the fan blade assembly is provided with a reinforcing rib structure to enhance the strength of the fan blade structure.

[0007] The blade tip of the fan blade and the inner wall of the fan frame are connected by a line-to-surface gap structure to replace the original surface-to-surface gap structure, ensuring that the blade tip and the inner wall maintain a distance even when the fan blade rotates at high speed and forms an angle.

[0008] The fan frame is an integral cast aluminum alloy structure, which is used to improve the overall shock resistance and structural strength. The inner wall of the fan frame is a smooth structure, which is easy to clean dust.

[0009] Optionally, the reinforcing rib is located at the outer edge of the fan blade line to provide support strength in place of the removed wind guard ring.

[0010] Optionally, the spacing formed by the line-plane gap structure can be set according to the limit sweep size of the fan blade in the deflection angle state, thereby avoiding contact between the fan blade and the frame in the event of dynamic balance failure.

[0011] Optionally, when the fan blade assembly rotates at high speed, the linear sweeping edge between the blade tip and the inner sidewall of the fan frame forms a cutting effect similar to a boring tool, which is used to physically remove accumulated dust, thereby providing a self-cleaning function.

[0012] Optionally, the fan blade material and thickness are optimized to ensure strength and stability during long-term use even after the wind guard ring is removed.

[0013] Optionally, the fan frame is made using an integrated aluminum alloy casting process to improve seismic resistance and overall structural reliability.

[0014] Optionally, a minimum gap is provided between the fan frame and the fan blade assembly to reduce wind pressure loss and increase airflow.

[0015] Optionally, the fan is suitable for use in the thermal management system of new energy engineering machinery equipment, especially in high dust conditions such as coal, sand and gravel, and tunnels, which can extend the cleaning cycle or achieve maintenance-free operation.

[0016] Optionally, the fan structure eliminates the 2-3mm surface gap between the fan guard ring and the frame fan ring, and replaces it with a linear edge structure that has the ability to cut away accumulated dust.

[0017] Optionally, the inner wall structure of the fan frame is a smooth curved surface, which facilitates cleaning with an air gun or a low-pressure water gun, improving cleaning convenience and maintenance efficiency.

[0018] The beneficial effects of this utility model's technical solution are:

[0019] The cooling fan structure provided by this utility model, by eliminating the original air guard ring, optimizing the fan blade reinforcing ribs, reconstructing the gap relationship between the fan blades and the frame, and adopting an integrated aluminum alloy cast frame, not only effectively avoids the formation of dust accumulation angles and significantly reduces the risk of frictional noise and malfunctions caused by dynamic balance failure, but also improves the overall structural strength and seismic performance. The new fan has excellent self-cleaning capabilities, significantly extending the maintenance cycle under harsh working conditions, and essentially achieving "maintenance-free" operation in normal environments, greatly improving the operational stability of new energy construction machinery and the user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cooling fan structure in an embodiment of the present invention;

[0021] Figure 2 This is a side view of the cooling fan in an embodiment of this utility model. Detailed implementation method:

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying 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.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0026] 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 above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Please see Figure 1 and Figure 2The illustration shows a cooling fan for a thermal management system of new energy engineering machinery according to an embodiment, which includes a fan frame 123 and a fan blade assembly 2. The fan blade assembly 2 does not have a wind guard ring structure, and the outer edge of the fan blades of the fan blade assembly 2 is provided with a reinforcing rib structure 3 to enhance the structural strength of the fan blades. The blade tip 21 and the inner wall of the fan frame 1 are connected by a line-to-surface gap structure to replace the original surface-to-surface gap structure, ensuring that the blade tip 21 and the inner wall still maintain a distance A when the fan blades rotate at high speed and form an angle. The fan frame 1 is an integral cast aluminum alloy structure to improve the overall shock resistance and structural strength. The inner wall of the fan frame is a smooth structure to facilitate the cleaning of accumulated dust.

[0028] In this embodiment, the reinforcing rib 3 is located at the outer edge of the fan blade line to provide support strength in place of the removed wind shield ring.

[0029] In this embodiment, the spacing A formed by the line-plane gap structure can be set according to the limit sweep size of the fan blade in the deflection angle state, thereby avoiding contact between the fan blade and the frame in the case of dynamic balance failure.

[0030] In this embodiment, when the fan blade assembly 2 rotates at high speed, the linear sweeping edge between its blade tip 21 and the inner wall of the fan frame 1 forms a cutting effect similar to a boring tool, which is used to physically remove accumulated dust, thereby having a self-cleaning function.

[0031] In this embodiment, the fan blade material and thickness have been optimized to ensure strength and stability during long-term use even after the wind guard ring is removed.

[0032] In this embodiment, the fan frame 1 adopts an integrated aluminum alloy casting process to improve seismic resistance and overall structural reliability.

[0033] In this embodiment, a minimum gap is provided between the fan frame 1 and the fan blade assembly 2 to reduce wind pressure loss and increase air volume.

[0034] In this embodiment, the fan is suitable for use in the thermal management system of new energy engineering machinery equipment, especially in high dust conditions such as coal, sand and gravel, and tunnels, which can extend the cleaning cycle or achieve maintenance-free operation.

[0035] In this embodiment, the 2-3mm surface gap between the fan guard ring and the frame fan ring is eliminated and replaced with a linear edge structure that has the ability to cut away accumulated dust.

[0036] In this embodiment, the inner wall structure of the fan frame 1 is a smooth curved surface, which facilitates cleaning with an air gun or a low-pressure water gun, improving cleaning convenience and maintenance efficiency.

[0037] The following description will further illustrate the characteristics and functions of this utility model.

[0038] This invention provides a cooling fan suitable for the thermal management system of new energy engineering machinery, mainly to solve the problems of existing electronic fans easily accumulating dust, failing dynamic balance, and causing friction noise under high dust conditions. This cooling fan can be widely used in the thermal management systems of non-road equipment such as electric loaders and mining trucks.

[0039] This cooling fan mainly consists of two parts: a fan frame and a fan blade assembly. The fan frame is manufactured using a one-piece aluminum alloy casting process, resulting in high structural strength and strong shock resistance. Its inner wall is also optimized for a high degree of smoothness, facilitating subsequent cleaning with an air gun or low-pressure water gun. Compared to traditional frames using split structures or plastic materials, the frame of this invention exhibits better stability and durability in harsh vibration and dust environments.

[0040] The fan blade assembly features a multi-blade structure, with each blade evenly distributed around the center of the fan. This eliminates the need for the original annular air shroud, preventing dust accumulation at the angle between the air shroud and the fan frame, thus effectively reducing the risk of dynamic balance failure due to dust accumulation. To enhance the structural rigidity of the fan blades under high-speed conditions, each blade has reinforcing ribs on its outer edge, ensuring good mechanical strength and deformation control even without the air shroud.

[0041] In terms of structural design, the fan blade tip and the inner wall of the fan frame are designed with a line-to-surface gap, unlike the traditional surface-to-surface gap structure. In this line-to-surface fit, the swept edge formed by the fan blade's rotation is a relatively stable linear trajectory, maintaining a stable distance from the inner wall. Even when dust accumulation or slight dynamic imbalance causes the fan blade to rotate at an angle, it will not come into contact with the inner wall of the frame. This structure exhibits good fault tolerance and anti-interference capabilities in actual operation.

[0042] In terms of its working principle, after the fan starts, the high-speed rotation of the fan blades generates axial airflow, which drives the cooling air through the thermal management system for heat dissipation. Because the air guard ring is eliminated, no dead zones for foreign matter accumulation form at the fan blade tips during rotation, effectively preventing the buildup of foreign matter. Thanks to the line-to-surface gap structure, the fan blade tips form a dynamic sweep line during high-speed rotation. This sweep line maintains a fixed distance from the inner wall. When encountering fine dust particles, the blade tip edge can create a cutting action similar to a boring bar, physically disturbing and removing the accumulated dust, thus providing a certain degree of self-cleaning function. This process not only reduces the rate of dust accumulation but also lessens the dependence on maintenance cycles, contributing to the goal of achieving a "maintenance-free" fan.

[0043] In actual use, after on-site verification, the cooling fan performed stably in high-dust environments such as coal mines, sand and gravel mines, and tunnels. The dynamic balance of the fan blades remained good, and no obvious eccentric wear or abnormal noise issues were observed. Even after long-term operation, the amount of dust accumulated on the inner wall was significantly lower than that of fans with traditional structures, greatly reducing the frequency of cleaning.

[0044] In summary, this utility model effectively solves the problems of dust accumulation, abnormal noise, and malfunctions in the thermal management fans of new energy engineering machinery in practical applications by eliminating the wind guard ring, adding reinforcing ribs, optimizing the gap structure, and selecting materials. It improves the stability and maintenance convenience of the equipment and has good promotion and application value.

[0045] The cooling fan structure provided by this utility model, by eliminating the original air guard ring, optimizing the fan blade reinforcing ribs, reconstructing the gap relationship between the fan blades and the frame, and adopting an integrated aluminum alloy cast frame, not only effectively avoids the formation of dust accumulation angles and significantly reduces the risk of frictional noise and malfunctions caused by dynamic balance failure, but also improves the overall structural strength and seismic performance. The new fan has excellent self-cleaning capabilities, significantly extending the maintenance cycle under harsh working conditions, and essentially achieving "maintenance-free" operation in normal environments, greatly improving the operational stability of new energy construction machinery and the user experience.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling fan for a thermal management system of new energy engineering machinery, characterized in that, include: Fan frame, fan blade assembly; The fan blade assembly does not have a windproof ring structure, but the outer edge of the fan blades of the fan blade assembly is provided with a reinforcing rib structure to enhance the strength of the fan blade structure. The blade tip of the fan blade and the inner wall of the fan frame are connected by a line-to-surface gap structure to replace the original surface-to-surface gap structure, ensuring that the blade tip and the inner wall maintain a distance even when the fan blade rotates at high speed and forms an angle. The fan frame is an integral cast aluminum alloy structure, which is used to improve the overall shock resistance and structural strength. The inner wall of the fan frame is a smooth structure, which is easy to clean dust.

2. The cooling fan according to claim 1, characterized in that: The reinforcing ribs are located at the outer edge of the fan blades and are used to provide support strength in place of the removed wind guard ring.

3. The cooling fan according to claim 1, characterized in that: The spacing formed by the line-plane gap structure can be set according to the limit sweep size of the fan blade in the deflection angle state, thereby avoiding contact between the fan blade and the frame in the event of dynamic balance failure.

4. The cooling fan according to claim 1, characterized in that: When the fan blade assembly rotates at high speed, the linear sweeping edge between the blade tip and the inner wall of the fan frame forms a cutting effect similar to a boring tool, which is used to physically remove accumulated dust, thus providing a self-cleaning function.

5. The cooling fan according to claim 1, characterized in that: The fan blade material and thickness have been optimized to ensure strength and stability during long-term use even after the wind guard ring is removed.

6. The cooling fan according to claim 1, characterized in that: The fan frame is made using an integrated aluminum alloy casting process to improve its seismic resistance and overall structural reliability.

7. The cooling fan according to claim 1, characterized in that: The fan frame and the fan blade assembly have a minimum spacing to reduce wind pressure loss and increase air volume.

8. The cooling fan according to claim 1, characterized in that: The fan is suitable for use in the thermal management system of new energy engineering machinery equipment, especially in high dust conditions such as coal, sand and gravel, and tunnels, and can extend the cleaning cycle or achieve maintenance-free operation.

9. The cooling fan according to claim 1, characterized in that: The fan structure eliminates the 2-3mm surface gap between the fan guard ring and the frame fan ring, replacing it with a linear edge structure capable of cutting away accumulated dust.

10. The cooling fan according to claim 1, characterized in that: The inner wall of the fan frame has a smooth curved surface, which makes it easy to clean with an air gun or a low-pressure water gun, improving cleaning convenience and maintenance efficiency.

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