Annular fan

Abstract

The utility model relates to the technical field of fans, and discloses an annular fan. The fan comprises a mounting disc, fan blades and a flow guide ring, wherein the fan blades are circumferentially arrayed between the mounting disc and the flow guide ring. The end of one side of the flow guide ring is provided with a sealing curved surface formed by bending towards the side away from the mounting disc and used for filling a gap between the flow guide ring and the fan cover, and the fan blades are provided with extending parts extending to the outer end face of the sealing curved surface. According to the annular fan, through the innovative design, airflow is effectively prevented from flowing back from the gap between the flow guide ring and the fan protection cover, invalid circulation of the airflow is reduced, the air draft efficiency is improved, the air flow in unit time is increased, the overall performance is improved, and a more efficient and reliable heat dissipation scheme is provided for an automobile engine cooling system.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically to a ring fan. Background Technology

[0002] During the operation of a car engine, a large amount of heat is generated and needs to be dissipated in a timely manner to ensure that the engine can work stably and efficiently. Currently, air cooling is widely used in automotive engine cooling systems, and the performance of the cooling fan, as the core component of air cooling, directly affects the efficiency of the cooling system.

[0003] A typical cooling fan structure mainly consists of a fan body and a shroud surrounding the fan body. The main function of the shroud is to protect the fan body and prevent foreign objects from interfering with its operation. However, in practical applications, a certain gap is left between the shroud and the fan (the air guide ring and the shroud) (e.g., Figure 6 (As shown). However, this gap presents a problem: when the fan is drawing air, some airflow flows back through the gap between the fan shroud and the fan. This backflow not only leads to a loss of airflow and reduces extraction efficiency, but also significantly affects the overall performance of the fan, thereby weakening the cooling effect of the car engine's cooling system.

[0004] To address the above technical problems, this application proposes a ring fan that can prevent airflow backflow. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present invention provides a ring fan.

[0006] The technical solution adopted by this utility model is: a ring-shaped fan, including a mounting plate, fan blades, and a guide ring, wherein the fan blades are arranged in a circumferential array between the mounting plate and the guide ring.

[0007] The end of one side of the flow guide ring has a sealing surface that is bent away from the mounting plate. The sealing surface is used to fill the gap between the flow guide ring and the wind shield covering the outer ring of the flow guide ring.

[0008] The fan blade has an extension that extends to the outer end face of the sealing curved surface.

[0009] Furthermore, the sealing surface is located on the air outlet side of the guide ring.

[0010] Furthermore, both sides of the mounting plate are flat surfaces with mounting holes, and the outer rings on both sides of the mounting plate are provided with thickened steps. The surface of the thickened steps on the air outlet side is provided with a reinforcing structure.

[0011] Further, the thickness of the mounting disc is 1-2 times of the thickening step, and the thickness of the mounting disc is 1-2 cm.

[0012] Further, the reinforcing structure comprises a reinforcing frame one, a reinforcing frame two and an arc-shaped reinforcing plate, the reinforcing frame one and the reinforcing frame two are equilateral hexagonal structures, the side length of the reinforcing frame one is equal to the side length of the reinforcing frame two, the reinforcing frame one and the reinforcing frame two are concentrically superposed to form twelve intersection nodes, twelve vertices and twelve intersection grooves, the intersection nodes are distributed at equal angles along the circumferential direction, the fan blade extends from one vertex as a starting axis to the side of the adjacent vertex, and the arc-shaped reinforcing plate is connected to the fan blade in an inclined mode, one end of the arc-shaped reinforcing plate is connected to the vertex, and the other end extends to the side surface of the fan blade of the adjacent vertex.

[0013] Further, a plurality of reinforcing straight plates are arranged in the cavity formed between the intersection groove and the arc-shaped reinforcing plate.

[0014] Further, a guide convex rib is arranged on the surface of the fan blade on the air inlet side.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The sealing curved surface formed by bending the side end of the guide ring to the side away from the mounting disc can accurately fill the gap between the guide ring and the wind cover. This design effectively prevents the phenomenon of air backflow from the gap during the fan air extraction process, thereby greatly improving the air extraction efficiency. Compared with the traditional cooling fan, the air flow loss caused by air backflow can be significantly reduced, the air extraction efficiency can be improved, and the cooling effect can be significantly improved.

[0017] 2. The fan blade has an extension part extending to the outer end surface of the sealing curved surface, the effective diameter of the fan blade is increased, the performance of the fan is optimized, the air disturbance ability of the fan is enhanced, the air flow through the fan per unit time is increased, and the air extraction efficiency is further improved.

[0018] In summary, the annular fan of the patent effectively solves the air backflow problem of the traditional cooling fan through the innovative improvement of the guide ring and the fan blade, significantly improves the air extraction efficiency and overall performance, and brings a more efficient and reliable cooling solution for the automobile engine cooling system.

[0019] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the air inlet side schematic view of the utility model.

[0021] Figure 2 It is the outflow side schematic view of the utility model.

[0022] Figure 3 It is Figure 2 It is the enlarged schematic view of A in the middle.

[0023] Figure 4 It is the end surface schematic view of the utility model's outflow side.

[0024] Figure 5 It is the side schematic view of the utility model.

[0025] Figure 6 It is the schematic view of the prior fan and the wind shield.

[0026] Figures 1-6 1, mounting disc, 2, fan blade, 3, flow guide ring, 4, sealing curved surface, 5, extension, 6, mounting hole, 7, thickening step, 8, reinforcing structure, 9, reinforcing frame one, 10, reinforcing frame two, 11, arc reinforcing plate, 12, cross node, 13, apex, 14, cross groove, 15, reinforcing straight plate, 16, flow guide convex rib. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0029] The utility model provides a kind of annular fan.

[0030] In the present embodiment, with reference to Figures 1-6 The annular fan, including mounting disc 1, fan blade 2 and flow guide ring 3, the fan blade circumferential array is between mounting disc and flow guide ring,

[0031] The end of the flow guide ring side has the sealing curved surface 4 that is bent and formed to the side away from mounting disc, and the sealing curved surface 4 is used to fill the gap formed between flow guide ring and the wind shield cover covered in the outer circle of flow guide ring;

[0032] The fan blade has extension 5 extending to the outer end surface of sealing curved surface.

[0033] In the above technical solution, the sealing curved surface is designed to bend and form on one side end of the flow guide ring to the direction away from the mounting disc, the gap between the flow guide ring and the wind shield is filled by the curved surface, the sealing curved surface effectively blocks the backflow of the air flow from the gap between the flow guide ring and the wind shield when the fan is pumping, reduces the invalid circulation of the air flow, and improves the pumping efficiency.

[0034] Meanwhile, the extension of the fan blade extends to the outer end surface of the sealing curved surface. The effective diameter of the fan blade is increased, the performance of the fan is optimized, the air disturbance ability of the fan is enhanced, the air flow through the fan per unit time is increased, and the pumping efficiency and heat dissipation efficiency are further improved.

[0035] In addition, the air inlet side and the air outlet side of the present application refer to the air outlet direction of pumping, as shown in Figure 5

[0036] Specifically, the sealing curved surface is located on the air outlet side of the flow guide ring.

[0037] In this embodiment, the sealing curved surface is arranged on the air outlet side of the flow guide ring, so that the direction of the air flow blown out from the fan cooperates with the sealing curved surface when the fan is working, and the backflow of the air flow from the gap is better prevented.

[0038] Specifically, the surfaces on both sides of the mounting disc are flat surfaces, and mounting holes 6 are arranged on the surfaces, thickening steps 7 are arranged on the outer circles of the surfaces on both sides of the mounting disc, and the thickening steps 7 are provided with reinforcing structures 8 on the surfaces on the air outlet side.

[0039] In this embodiment, the surface of the mounting disc is no longer provided with the structure of the reinforcing rib, which can effectively reduce the overall weight of the fan, and the thickening step and the reinforcing structure improve the strength of the mounting disc.

[0040] Specifically, the thickness of the mounting disc is 1-2 times the thickness of the thickening step, and the thickness of the mounting disc is 1-2 cm.

[0041] In this embodiment, the thickness of the mounting disc is 1-2 times the thickness of the thickening step, and the thickness of the mounting disc is 1-2 cm. By reasonably designing the thickness ratio and specific thickness value of the mounting disc and the thickening step, the overall weight and space occupation of the fan are considered while the structural strength is ensured.

[0042] ​Specifically, the reinforcing structure comprises a reinforcing frame one 9, a reinforcing frame two 10 and an arc-shaped reinforcing plate 11, the reinforcing frame one and the reinforcing frame two are both equilateral hexagonal structures, and the side length of the reinforcing frame one is equal to that of the reinforcing frame two, the reinforcing frame one and the reinforcing frame two are concentrically superposed to form twelve intersection nodes 12, twelve vertices 13 and twelve intersection grooves 14, the intersection nodes are distributed at equal angles in the circumferential direction, the fan blade extends from one of the vertices as a starting axis to the side of the adjacent vertex, and the arc-shaped reinforcing plate is connected to the fan blade in an inclined manner, one end of the arc-shaped reinforcing plate is connected to the vertex, and the other end extends to the side surface of the fan blade of the adjacent vertex.

[0043] In the embodiment, the reinforcing structure greatly improves the strength and rigidity of the mounting disc, guarantees the stability of the fan operation, and further improves the overall performance and reliability of the fan.

[0044] In addition, when the fan wades, the stress is too concentrated on the fan blade, which is easy to cause the fan blade to break, and by arranging the above reinforcing structure, the strength of the fan blade can be improved, and the problem of fan blade breakage when wading can be avoided.

[0045] Specifically, a plurality of reinforcing straight plates 15 are arranged in the cavity formed between the intersection groove and the arc-shaped reinforcing plate.

[0046] In the embodiment, the reinforcing straight plates increase the integrity and strength of the reinforcing structure, so that the mounting disc can better disperse and bear the force when facing complex stress, the risk of damage caused by excessive local stress is reduced, and the service life of the fan is prolonged.

[0047] Specifically, a guide convex rib 16 is arranged on the surface of the fan blade on the air inlet side.

[0048] In the embodiment, the guide convex rib can form an air flow to cool the clutch mounted on the mounting disc.

[0049] Skilled persons should know that although the utility model has been described according to the above specific embodiments, the utility model idea is not limited to the utility model, and any modification using the utility model idea will be included in the patent protection range.

Claims

1. A ring fan comprising a mounting disc, fan blades and a guide ring, the fan blades being arranged circumferentially between the mounting disc and the guide ring, characterized in that: an end of the guide ring on one side is provided with a sealing curve shaped to curve away from the mounting disc on the side, the sealing curve being used to fill the gap between the guide ring and a wind shield covering the outer periphery of the guide ring; the fan blades are provided with an extension extending to the outer end surface of the sealing curve.

2. The ring fan of claim 1, wherein: the sealing curve is located on the air outlet side of the guide ring.

3. The ring fan of claim 1, wherein: the surfaces on both sides of the mounting disc are flat surfaces provided with mounting holes, and the outer periphery of the mounting disc on both sides is provided with a thickening step, and the surface on the air outlet side of the thickening step is provided with a reinforcing structure.

4. The ring fan of claim 3, wherein: the thickness of the mounting disc is 1-2 times the thickness of the thickening step, and the thickness of the mounting disc is 1-2 cm.

5. The ring fan of claim 4, wherein: the reinforcing structure comprises a reinforcing frame one, a reinforcing frame two and an arc-shaped reinforcing plate, the reinforcing frame one and the reinforcing frame two are equilateral hexagonal structures, and the side length of the reinforcing frame one is equal to the side length of the reinforcing frame two, the reinforcing frame one and the reinforcing frame two are concentrically superimposed to form twelve intersection nodes, twelve vertices and twelve intersection grooves, the intersection nodes are distributed at equal angles in the circumferential direction, the fan blades extend from one of the vertices as a starting axis to the side of the adjacent vertex, the arc-shaped reinforcing plate is inclinedly connected to the fan blades, one end of the arc-shaped reinforcing plate is connected to the vertex, and the other end extends to the side surface of the fan blades of the adjacent vertex.

6. The ring fan of claim 5, wherein: a plurality of reinforcing straight plates are arranged in the cavity formed between the intersection grooves and the arc-shaped reinforcing plate.

7. The ring fan of claim 1, wherein: the surface of the fan blades on the air inlet side is provided with a guide convex rib.

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