Fan with opening

Abstract

The utility model discloses an opening fan, and belongs to the technical field of fans. The fan blade structure comprises a mounting disc and fan blades arranged on the outer ring of the mounting disc in a circumferential array mode, thickening steps are arranged on the two sides of the outer ring of the mounting disc, a reinforcing structure is arranged on the surface of the thickening step on the air outlet side, and the reinforcing structure comprises a first reinforcing frame, a second reinforcing frame and an arc-shaped reinforcing plate. The first reinforcing frame is concentrically overlaid on the second reinforcing frame and arranged on the thickening step. By arranging the thickening step, the structural strength of the mounting disc is enhanced, the fracture risk of the joint of the fan blade and the mounting disc is reduced, and the reliability of the fan in a complex environment, especially in a wading working condition is improved; the unique reinforcing structure effectively disperses acting force, stress concentration is avoided, the overall rigidity is enhanced, the fan performance is optimized, and the durability in a severe environment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, concretely is an open fan. BACKGROUND

[0002] In the operation process of automobile engine, a large amount of heat will be generated, if not timely and effectively radiate, will seriously affect the performance and service life of engine. Therefore, automobile engine cooling system is very important, and the air cooling mode as a common and effective heat dissipation mode is widely used in the system, which makes the cooling fan become one of the key components of automobile engine cooling system.

[0003] At present, the open fan is commonly used in the automobile engine cooling system, and its main structure includes a mounting disc and fan blades arranged in a circumferential array on the outer circle of the mounting disc, wherein the fan blades are usually designed as an arc structure. However, when the vehicle encounters water during driving, the fan with such structure exposes obvious defects. Due to the arc structure of the fan blades, the stress is mainly concentrated on the back of the fan blades and the connection between the fan blades and the mounting disc when encountering water resistance. Under the action of such large water resistance, the above-mentioned key parts are prone to breakage. Once the breakage occurs, not only the fan cannot work normally, but also the heat dissipation effect of the engine cooling system is affected, and in severe cases, a series of problems such as short circuit may be caused, thereby threatening the overall operation safety of the automobile. Therefore, how to improve the strength of the key parts of the fan under the water condition and avoid such problems has become a technical problem to be solved at present. SUMMARY

[0004] The utility model provides an open fan aiming at the deficiency in the background art.

[0005] The technical scheme adopted by the utility model is as follows: an open fan, comprising a mounting disc and fan blades arranged in a circumferential array on the outer circle of the mounting disc, wherein the outer circle of the mounting disc on both sides is provided with a thickening step, and the surface of the thickening step on the air outlet side is provided with a reinforcing structure.

[0006] The reinforcing structure comprises a reinforcing frame one, a reinforcing frame two and an arc reinforcing plate, the arc reinforcing plate is connected to the fan blade in an inclined manner and connected to the reinforcing frame one, and the reinforcing frame one and the reinforcing frame two are concentrically and superposed on the thickening step.

[0007] Further, the reinforcing frame one and the reinforcing frame two are both 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 circumference, the fan blade extends from one vertex as a starting shaft to the side of the adjacent vertex, one end of the arc reinforcing plate is connected to the vertex, and the other end extends to the side surface of the fan blade of the adjacent vertex.

[0008] Further, the cavity formed between the cross groove and the arc-shaped reinforcing plate is provided with a plurality of reinforcing straight plates.

[0009] Further, the surface of the fan blade on the air inlet side is provided with a flow guide convex rib.

[0010] Further, the mounting disc is provided with a mounting hole.

[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 surfaces on both sides of the mounting disc are flat surfaces.

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

[0014] 1. By setting the thickening step on both sides of the outer circle of the mounting disc, the strength of the overall structure of the mounting disc is effectively increased. Especially when the fan faces water-involved working conditions, the thickening step can provide stronger support for the connection between the fan blade and the mounting disc, greatly reducing the risk of fracture of this part due to excessive stress, and significantly improving the reliability of the fan in complex environments.

[0015] 2. The reinforcing structure further optimizes the performance of the fan. The twelve cross nodes, twelve vertices and twelve cross grooves formed by the concentric superposition of the reinforcing frame one and the reinforcing frame two are complex and ingenious in structure design, which greatly enhances the rigidity of the whole fan without significantly increasing the weight. When the fan is subjected to water-involved resistance, these cross nodes and cross grooves can effectively disperse the force and avoid stress concentration.

[0016] 3. The arc-shaped reinforcing plate is inclinedly connected to the fan blade, one end of which is connected to the vertex and the other end of which extends to the side surface of the fan blade of the adjacent vertex. This design not only further strengthens the strength of the fan blade itself, but also forms a cooperative force mechanism between the fan blades. When encountering water-involved resistance, the fan blades can support each other, so that the whole fan can better cope with external force impact, greatly improving the durability of the fan in harsh environments.

[0017] 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 with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the air inlet side schematic view of the utility model.

[0019] Figure 2 It is the air outlet side schematic view of the utility model.

[0020] Figure 3 It is the outflow side end surface schematic view of the utility model.

[0021] Figure 4 It is the side surface schematic view of the utility model.

[0022] Figures 1-4 1, mounting disc, 2, fan blade, 3, thickening step, 4, reinforcing structure, 5, reinforcing frame one, 6, reinforcing frame two, 7, arc reinforcing plate, 8, cross node, 9, apex, 10, cross groove, 11, reinforcing straight plate, 12, flow guide convex rib, 13, mounting hole. DETAILED DESCRIPTION

[0023] 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, not 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.

[0024] 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 will also change accordingly.

[0025] The utility model provides a kind of opening fan.

[0026] In the embodiment, with reference to Figures 1-4 The opening fan includes a mounting disc 1 and a plurality of fan blades 2 arranged circumferentially on the outer periphery of the mounting disc 1. The mounting disc 1 is provided with thickening steps 3 on both sides of the outer periphery. The surface of the thickening steps 3 on the air outlet side is provided with reinforcing structures 4.

[0027] The reinforcing structures include reinforcing frame one 5, reinforcing frame two 6 and arc reinforcing plate 7. The arc reinforcing plate 7 is inclinedly connected to the fan blades and connected to the reinforcing frame one. The reinforcing frame one and the reinforcing frame two are concentrically and superposedly arranged on the thickening steps.

[0028] 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 the side length of the reinforcing frame two. The reinforcing frame one and the reinforcing frame two are concentrically and superposedly formed into twelve cross nodes 8, twelve apexes 9 and twelve cross grooves 10. The cross nodes are distributed at equal angles in the circumferential direction. The fan blades extend from one of the apexes as a starting axis to the side of the adjacent apex. One end of the arc reinforcing plate is connected to the apex, and the other end extends to the side surface of the fan blade of the adjacent apex.

[0029] In the above technical solution, the thickening steps are arranged on both sides of the outer ring of the mounting disc, aiming to enhance the structural strength of the mounting disc, especially at the key position connected with the fan blades. The reinforcing structure of the surface of the outflow side of the thickening step is formed by concentrically superimposing the reinforcing frame one and the reinforcing frame two with equal edge length, and the cross nodes, vertices and cross grooves formed thereby construct a stable mechanical framework. The fan blades start from the vertices and extend to the side of the adjacent vertices, and the arc-shaped reinforcing plates connect the fan blades with the vertices and the side surfaces of the adjacent fan blades, further strengthening the connection between the fan blades and the overall structural stability.

[0030] In summary, the thickening steps provide stronger support for the connection between the fan blades and the mounting disc, reduce the risk of fracture, and improve the reliability of the fan under complex working conditions (such as water involvement). The reinforcing structure effectively disperses the force when the fan is running and encounters external forces, avoids stress concentration, enhances the overall rigidity, and ensures stable and efficient operation of the fan.

[0031] In addition, the air inlet side and the air outlet side of the present application refer to the outflow direction of the air extraction, as shown in Figure 4

[0032] Specifically, a plurality of reinforcing straight plates 11 are arranged in the cavity formed between the cross grooves and the arc-shaped reinforcing plates.

[0033] In this embodiment, a plurality of reinforcing straight plates are arranged in the cavity formed by the cross grooves and the arc-shaped reinforcing plates, based on the mechanical stability principle of triangles and rectangles, further dividing and reinforcing the spatial structure of this area, increasing the local rigidity.

[0034] Specifically, a flow guide protruding rib 12 is arranged on the surface of the fan blade on the air inlet side.

[0035] In this embodiment, the flow guide protruding rib can form an air current to dissipate heat for the clutch mounted on the mounting disc.

[0036] Specifically, a mounting hole 13 is arranged on the mounting disc.

[0037] In this embodiment, a mounting hole is arranged on the mounting disc for fixing the fan and other components (such as fan cover, driving motor, clutch, etc.) of the automobile engine cooling system through bolts, nuts and other connecting members.

[0038] 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.

[0039] 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 ensuring the structural strength.​

[0040] Specifically, the surfaces on both sides of the mounting disc are flat surfaces.

[0041] In the embodiment, the surface of the mounting disc is no longer provided with the reinforcing rib structure, but is provided with a flat structure in a thin plate shape, so that the overall weight of the fan can be effectively reduced.

[0042] 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. An open fan comprising a mounting disc and a circumferential array of fan blades mounted on the periphery of the mounting disc, characterised in that: The thickening steps are provided with reinforcing structures on the surfaces of the outboard side of the installation disc; The reinforcing structures comprise reinforcing frame one, reinforcing frame two and arc-shaped reinforcing plates, the arc-shaped reinforcing plates are connected to the fan blades and connected to the reinforcing frame one, the reinforcing frame one and the reinforcing frame two are concentrically and superposed on the thickening steps.

2. The open fan of claim 1, wherein: The reinforcing frame one and the reinforcing frame two are equilateral hexagonal structures, 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 and superposed to form twelve intersection nodes, twelve vertices and twelve intersection grooves, the intersection nodes are distributed at equal angles along the circumference, the fan blade extends from one vertex as a starting axis to the side of the adjacent vertex, 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.

3. The open fan of claim 2, wherein: A plurality of reinforcing straight plates are arranged in the cavities formed between the intersection grooves and the arc-shaped reinforcing plates.

4. The open fan of claim 2, wherein: The surface of the fan blade on the air inlet side is provided with a flow guide convex rib.

5. The open fan of claim 2, wherein: The installation disc is provided with a mounting hole.

6. The open fan of claim 2, wherein: The thickness of the installation disc is 1-2 times of the thickening step, and the thickness of the installation disc is 1-2 cm.

7. The open fan of claim 2, wherein: The surfaces of the installation disc are flat surfaces.

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