Assembly type axial fan and motor

Abstract

The embodiment of the utility model provides an assembly type axial flow fan and a motor. The assembly type axial flow fan comprises a first fan ring plate, a second fan ring plate and a plurality of mutually independent fan blades assembled between the first fan ring plate and the second fan ring plate, the first fan ring plate and the second fan ring plate are each provided with a first bolt hole, each fan blade is provided with a second bolt hole, and bolts penetrate through the first bolt holes in the first fan ring plate, the second bolt holes in each fan blade and the first bolt holes in the second fan ring plate. The first fan ring plate, each fan blade and the second fan ring plate are assembled; the first fan ring plate and the second fan ring plate are each of an annular structure, so that the assembled fan blades are arranged in an annular mode. Casting cost can be reduced, and welding defects are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to an assembled axial flow fan and a motor. Background Art

[0002] Compared with a centrifugal fan, the flow rate and pressure of an axial flow fan are smaller, and it is more suitable for ventilation and heat dissipation in a smaller space. At present, most axial flow fans adopt integral casting or welding of fan blades and a fan base. The integral casting method requires a larger mold, so the cost of integral casting is relatively high. And the method of welding the fan blades and the fan base is prone to welding defects, etc. Therefore, it is necessary to provide an axial flow fan that can improve the above problems. Summary of the Utility Model

[0003] An embodiment of the utility model provides an assembled axial flow fan and a motor, which can reduce the casting cost and avoid welding defects.

[0004] According to a first aspect, an assembled axial flow fan provided by an embodiment of the utility model includes: a first fan ring plate, a second fan ring plate, and a plurality of independent fan blades assembled between the first fan ring plate and the second fan ring plate; wherein:

[0005] The first fan ring plate and the second fan ring plate are both provided with first bolt holes, and each fan blade is provided with a second bolt hole. A bolt passes through the first bolt hole on the first fan ring plate, the second bolt hole on each fan blade, and the first bolt hole on the second fan ring plate to realize the assembly of the first fan ring plate, each fan blade, and the second fan ring plate.

[0006] The first fan ring plate and the second fan ring plate are both of annular structures, so that the assembled fan blades are arranged in a ring shape.

[0007] In an embodiment, the first fan ring plate and the second fan ring plate are both provided with positioning holes, and both sides of each fan blade have positioning protrusions; the positioning protrusion on one side of each fan blade is assembled in the positioning hole on the first fan ring plate, and the positioning protrusion on the other side of each fan blade is assembled in the positioning hole on the second fan ring plate to realize the positioning of each fan blade when being assembled between the first fan ring plate and the second fan ring plate.

[0008] In one embodiment, the number of positioning protrusions on each side of each fan blade is 2, the number of second bolt holes on each fan blade is 1, and the second bolt hole on each fan blade is located between the 2 positioning protrusions on each side; correspondingly, the first fan ring plate and the second fan ring plate both have multiple groups of hole structures, the number of groups of the hole structures is the same as the number of fan blades, and each group of hole structures includes 2 positioning holes and a first bolt hole located between the 2 positioning holes.

[0009] In one embodiment, each fan blade includes a fan blade base and a fan blade body located on the fan blade base, and the positioning protrusion and the second bolt hole are both arranged on the fan blade base.

[0010] In one embodiment, each fan blade further includes reinforcing ribs located on both sides of the fan blade body, and the reinforcing ribs connect the fan blade body and the fan blade base to enhance the connection strength between the fan blade body and the fan blade base.

[0011] In one embodiment, the fan blade body, the fan blade base and the reinforcing ribs on each fan blade are of an integral structure.

[0012] In one embodiment, each fan blade is an injection molded part; and / or, each fan blade is in an irregular quadrilateral shape.

[0013] In one embodiment, the fan blade body of each fan blade has a rotation direction mark to indicate the rotation direction of the fan blade during assembly.

[0014] In one embodiment, thread locking glue is filled between the bolt and the first bolt hole and between the bolt and the second bolt hole.

[0015] In one embodiment, lock washers are arranged between the bolt and the first bolt hole and between the bolt and the second bolt hole.

[0016] According to a second aspect, a motor provided by an embodiment of the present invention includes the assembled axial flow fan provided by the first aspect.

[0017] The embodiments of the present invention provide an assembled axial flow fan and a motor, which respectively or in combination at least have the following technical effects:

[0018] (1) The assembled axial flow fan provided by the embodiment of the present utility model mainly includes two parts: two fan ring plates and multiple fan blades. It is not manufactured by integral casting, so large-sized molds are not required, reducing the casting cost and being less likely to produce casting defects, which can improve the product qualification rate, that is, it does not have the disadvantages of integral casting. Moreover, the two parts are assembled through bolts and bolt holes, rather than by welding, so welding operations are not required, thus there will be no welding defects, no welding deformation, and no increase in unbalance due to welding deformation. It can be seen that it also does not have the disadvantages brought by welding.

[0019] (2) Through the cooperation of the positioning protrusion and the positioning hole, problems such as displacement and loosening of the fan blades relative to the two fan ring plates during the working state can be avoided, improving the operation reliability.

[0020] (3) The fan blade body, fan blade base, and reinforcing ribs of the fan blade are of an integral structure, that is, they are formed by casting with the same mold, thereby reducing the vibration and noise that may occur when the fan blade rotates. Since each fan blade is independent of each other, if a certain fan blade is damaged, only the damaged fan blade needs to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is an exploded view of the assembled axial flow fan in the unassembled state in an embodiment of the present utility model;

[0023] Figure 2 is a schematic structural diagram of the assembled axial flow fan in the assembled state in an embodiment of the present utility model;

[0024] Figure 3 is the front view of the fan blade in an embodiment of the present utility model;

[0025] Figure 4 is Figure 3 the top view of

[0026] REFERENCE SIGNS:

[0027] 10 Fan blade 11 Rotation direction mark 12 Reinforcing rib 20 First fan ring plate 30 Second fan ring plate 41 Positioning hole 42 First bolt hole 51 Bolt 52 Nut 13 Fan blade body 14 Fan blade base 15 Positioning projection 16 Second bolt hole DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] In a first aspect, an embodiment of the present utility model provides an assembled axial flow fan. Refer to Figures 1 to 4 , the assembled axial flow fan includes: a first fan ring plate 20, a second fan ring plate 30, and a plurality of independent fan blades 10 assembled between the first fan ring plate 20 and the second fan ring plate 30; wherein:

[0030] First bolt holes 42 are formed on both the first fan ring plate 20 and the second fan ring plate 30, and second bolt holes 16 are formed on each fan blade 10. The first bolt holes 42 on the first fan ring plate 20, the second bolt holes 16 on each fan blade 10, and the first bolt holes 42 on the second fan ring plate 30 are penetrated by bolts 51 to achieve the assembly of the first fan ring plate 20, each fan blade 10, and the second fan ring plate 30.

[0031] Both the first fan ring plate 20 and the second fan ring plate 30 are annular structures, so that the assembled fan blades 10 are arranged in a ring shape.

[0032] Among them, the fan blades 10 do not need to be connected to each other but remain independent. Since each fan blade 10 is assembled separately, when a certain fan blade 10 is damaged, it is convenient to replace only this fan blade 10 without replacing other fan blades 10, reducing the maintenance cost.

[0033] Among them, the fan blades 10 are assembled between the first fan ring plate 20 and the second fan ring plate 30. Since the two fan ring plates are annular structures, the assembled fan blades 10 are arranged in a ring shape.

[0034] Among them, first bolt holes 42 are provided on both the first fan ring plate 20 and the second fan ring plate 30. On the first fan ring plate 20, the first bolt holes 42 are arranged distributively along the annular structure. On the second fan ring plate 30, the first bolt holes 42 are arranged distributively along the annular structure. Each blade 10 is provided with a second bolt hole 16. After a bolt 51 passes through a first bolt hole 42 on the first fan ring plate 20, a second bolt hole 16 on a blade 10, and a first bolt hole 42 on the second fan ring plate 30, then a nut 52 is used to fasten the bolt 51, so that the blade 10 is fixed between the first fan ring plate 20 and the second fan ring plate 30. In this way, each blade 10 can be fixed between the first fan ring plate 20 and the second fan ring plate 30, and the assembly among the first fan ring plate 20, each blade 10, and the second fan ring plate 30 is realized.

[0035] It can be seen that the assembled axial flow fan mainly includes two parts: two fan ring plates 20, 30 and a plurality of blades 10. The blades 10 can be processed after casting, and the fan ring plates are processed after steel plate blanking. The two parts are assembled by bolts 51. The assembled axial flow fan provided by the embodiment of the present invention is not made by integral casting, nor does it belong to the way of welding the fan blades and the fan seat. Therefore, the assembled axial flow fan provided by the embodiment of the present invention does not have the disadvantages of integral casting and the way of welding the fan blades and the fan seat.

[0036] In one embodiment, referring to Figure 1 and Figure 3 , positioning holes 41 are provided on both the first fan ring plate 20 and the second fan ring plate 30, and positioning protrusions 15 are provided on both sides of each blade 10; the positioning protrusion 15 on one side of each blade 10 is assembled in the positioning hole 41 on the first fan ring plate 20, and the positioning protrusion 15 on the other side of each blade 10 is assembled in the positioning hole 41 on the second fan ring plate 30, so as to realize the positioning of each blade 10 during assembly between the first fan ring plate 20 and the second fan ring plate 30.

[0037] It can be understood that positioning holes 41 are provided on the first fan ring plate 20, and positioning holes 41 are also provided on the second fan ring plate 30, and positioning protrusions 15 are provided on both sides of the blade 10. In this way, the positioning protrusion 15 on one side of the blade 10 can be assembled in the positioning hole 41 on the first fan ring plate 20, and the positioning protrusion 15 on the other side of the blade 10 can be assembled in the positioning hole 41 on the second fan ring plate 30, so as to assemble the blade 10 between the first fan ring plate 20 and the second fan ring plate 30.

[0038] It can be seen that during assembly, the blade 10 is fixed between the two fan ring plates not only by passing the bolts 51 through the first bolt holes 42 of the first fan ring plate 20, the second bolt holes 16 of the blade 10, and the first bolt holes 42 of the second fan ring plate 30. At the same time, the blade 10 is further fixed by the cooperation of the positioning holes 41 on the two fan ring plates and the positioning protrusions 15 on the blade 10, so that it is firmly installed between the two fan ring plates, so that when the blade 10 rotates in the working state, there will be no displacement relative to the fan ring plates.

[0039] Furthermore, referring to Figure 4 , the number of positioning protrusions 15 on each side of each blade 10 can be 2, the number of second bolt holes 16 on each blade 10 can be 1, and the second bolt holes 16 on each blade 10 are located between the 2 positioning protrusions 15 on each side; correspondingly, the first fan ring plate 20 and the second fan ring plate 30 both have multiple groups of hole structures, the number of groups of the hole structures is the same as the number of blades 10, and each group of hole structures includes 2 positioning holes 41 and a first bolt hole 42 located between the 2 positioning holes 41.

[0040] That is to say, each blade 10 is provided with 4 positioning protrusions 15 and 1 second bolt hole 16, there are 2 positioning protrusions 15 on each side, and the second bolt hole 16 is arranged between the 2 positioning protrusions 15 on each side. At the same time, in order to adapt to multiple blades 10, the annular structures of the first fan ring plate 20 and the second fan ring plate 30 both have multiple groups of hole structures, the number of the hole structures is equal to the number of blades 10, and the multiple groups of hole structures are evenly distributed on the annular structure, and each group of hole structures includes 2 positioning holes 41 and 1 first bolt hole 42 located between the 2 positioning holes 41. In this way, the 2 positioning holes 41 on each fan ring plate cooperate with the 2 positioning protrusions 15 on one side of each blade 10, and the first bolt hole 42 on each fan ring plate cooperates with the second bolt hole 16 on each blade 10 to realize the double assembly of each blade 10 and the two fan ring plates.

[0041] In one embodiment, referring to Figure 3 and Figure 4 , each blade 10 includes a blade base 14 and a blade body 13 located on the blade base 14, and the positioning protrusions 15 and the second bolt holes 16 are both arranged on the blade base 14.

[0042] That is to say, each blade 10 includes a blade body 13 and a blade base 14. The blade body 13 is disposed on the blade base 14. Since the blade body 13 is in the shape of a sheet, it is more reliable to provide the positioning protrusion 15 and the second bolt hole 16 on the blade base 14. In this working state, the motor drives the two fan ring plates to rotate, and then the fan ring plates drive the blade base 14 to rotate, thereby driving the blade body 13 to rotate.

[0043] In one embodiment, referring to Figure 3 , each blade 10 may further include reinforcing ribs 12 located on both sides of the blade body 13. The reinforcing ribs 12 connect the blade body 13 and the blade base 14 to enhance the connection strength between the blade body 13 and the blade base 14.

[0044] Since the blade body 13 is in the shape of a sheet, the reinforcing ribs 12 are provided on both sides of the blade body 13, and the reinforcing ribs 12 connect the blade body 13 and the blade base 14. In this way, the connection strength between the blade body 13 and the blade base 14 can be enhanced, and the blade body 13 and the blade base 14 can be prevented from breaking when the blade 10 rotates.

[0045] Wherein, the blade body 13, the blade base 14 and the reinforcing ribs 12 on each blade 10 may be of an integral structure.

[0046] That is to say, each blade 10 can be obtained by integral casting. Since the volume of the blade 10 is relatively small, the required mold is also relatively small. Compared with the way of integral casting of the entire axial flow fan, the casting cost can be reduced, and it is not easy to have casting defects, improving the product qualification rate.

[0047] Wherein, each blade 10 can be an injection molded part.

[0048] In some scenarios, the required fan device is relatively small, or the temperature of the use environment is relatively low. Therefore, injection molded parts can be used to replace the cast parts, which can further reduce the cost.

[0049] Wherein, each blade 10 can be in the shape of an irregular quadrilateral. Of course, other shaped blades 10 can also be used.

[0050] In one embodiment, the blade body 13 of each blade 10 may have a rotation direction mark 11 to indicate the rotation direction of the blade 10 during assembly.

[0051] Since the fan blades 10 mostly adopt irregular shapes, a rotation direction mark 11 is provided on the fan blade body 13. In this way, when the fan blades 10 are assembled between two fan ring plates, the installation direction of the fan blades 10 can be determined according to the rotation direction mark 11, so that the installation directions of all the fan blades 10 are consistent.

[0052] In one embodiment, thread locking glue can be filled between the bolt 51 and the first bolt hole 42, and between the bolt 51 and the second bolt hole 16.

[0053] That is to say, after the bolt 51 passes through the first bolt hole 42 of the two fan ring plates and the second bolt hole 16 of the fan blade 10, thread locking glue can be filled between the bolt 51 and the first bolt hole 42, and between the bolt 51 and the second bolt hole 16. The thread locking glue has a certain viscosity. After the thread locking glue dries and cures between the bolt 51 and the first bolt hole 42, and between the bolt 51 and the second bolt hole 16, it can ensure that the bolt 51 will not loosen during the operation of the fan, and further improve the firmness between the fan blade 10 and the two fan ring plates.

[0054] Among them, after the bolt 51 passes through the first bolt hole 42 of the two fan ring plates and the second bolt hole 16 of the fan blade 10, a torque wrench can be used to tighten the nut 52 on the bolt 51.

[0055] In one embodiment, lock washers can be provided between the bolt 51 and the first bolt hole 42, and between the bolt 51 and the second bolt hole 16.

[0056] Since lock washers are provided between the bolt 51 and the first bolt hole 42, and between the bolt 51 and the second bolt hole 16, this can prevent the nut 52 from loosening from the bolt 51 and play a role in preventing loosening.

[0057] It can be understood that after the assembly is completed, it can be checked whether the assembly is qualified, and the axial flow fan can be dynamically balanced to ensure that the mass distribution of the axial flow fan is uniform, so as to reduce the vibration and noise generated during the operation of the axial flow fan.

[0058] It can be understood that through the cooperation of the positioning protrusion 15 and the positioning hole 41, problems such as displacement and loosening of the fan blade 10 relative to the two fan ring plates in the working state can be avoided, and the operation reliability is improved.

[0059] It can be understood that the overall casting method in the prior art requires a large and expensive mold, and is prone to casting defects, resulting in a relatively low qualified rate of finished products. In the embodiment of the present utility model, the fan blade 10 can be integrally formed by a casting process, rather than the entire axial flow fan being integrally cast. Therefore, the mold size is reduced and the cost is lowered. Since the mold is smaller, it is not easy to generate casting defects, and the product qualified rate can be improved.

[0060] It can be understood that since the fan blade body 13, the fan blade base 14, and the reinforcing rib 12 of the fan blade 10 are of an integral structure, that is, formed by casting with the same mold, the vibration and noise that may be generated when the fan blade 10 rotates are reduced. Since each fan blade 10 is independent of each other, if a certain fan blade 10 is damaged, only the damaged fan blade 10 needs to be replaced.

[0061] It can be understood that the method of welding the fan blade and the fan seat in the prior art is prone to welding defects, and due to the cutting error, the welding deformation will cause an increase in the later unbalance. In the embodiment of the present utility model, based on the cooperation of the bolt 51, the bolt hole and the nut 52, and the cooperation of the positioning protrusion 15 and the positioning hole 41, the assembly is realized, and welding operation is not required. Therefore, there will be no welding defects, no welding deformation, and no increase in the unbalance due to welding deformation.

[0062] It can be seen that the assembled axial flow fan provided by the embodiment of the present utility model does not have the disadvantages of the overall casting and the method of welding the fan blade and the fan seat.

[0063] In a second aspect, the present utility model provides a motor, and the motor includes the assembled axial flow fan provided in the first aspect.

[0064] It can be understood that the explanations, specific implementation manners, beneficial effects, examples, etc. of the relevant content in the motor involved in the motor provided in the second aspect can be referred to the corresponding parts in the assembled axial flow fan provided in the first aspect, and will not be elaborated here.

[0065] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0066] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present utility model. It should be understood that the above description is only for the specific embodiments of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solution of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An assembled axial flow fan, characterized in that: include: A first fan ring plate (20), a second fan ring plate (30), and a plurality of mutually independent fan blades (10) mounted between the first fan ring plate (20) and the second fan ring plate (30); wherein: The first fan ring plate (20) and the second fan ring plate (30) are both provided with a first bolt hole (42), and each fan blade (10) is provided with a second bolt hole (16); a bolt (51) penetrates the first bolt hole (42) on the first fan ring plate (20), the second bolt hole (16) on each fan blade (10), and the first bolt hole (42) on the second fan ring plate (30), so as to achieve assembly of the first fan ring plate (20), each fan blade (10), and the second fan ring plate (30); The first fan ring plate (20) and the second fan ring plate (30) are both annular structures, so that the assembled fan blades (10) are arranged in a ring shape; The first fan ring plate (20) and the second fan ring plate (30) are both provided with positioning holes (41), and both sides of each fan blade (10) are provided with positioning protrusions (15); the positioning protrusion (15) on one side of each fan blade (10) is assembled in the positioning hole (41) on the first fan ring plate (20), and the positioning protrusion (15) on the other side of each fan blade (10) is assembled in the positioning hole (41) of the second fan ring plate (30), so as to realize the positioning of each fan blade (10) when assembled between the first fan ring plate (20) and the second fan ring plate (30).

2. The assembled axial flow fan according to claim 1, characterized in that: The number of positioning protrusions (15) on each side of each fan blade (10) is two, the number of second bolt holes (16) on each fan blade (10) is one, and the second bolt hole (16) on each fan blade (10) is located between the two positioning protrusions (15) on each side; Correspondingly, the first fan ring plate (20) and the second fan ring plate (30) both have a plurality of groups of hole structures, the number of groups of the hole structures being the same as the number of the fan blades (10), and each group of the hole structures comprising two of the positioning holes (41) and a first bolt hole (42) located between the two positioning holes (41).

3. The assembled axial flow fan according to claim 1, characterized in that: Each fan blade (10) comprises a fan blade base (14) and a fan blade body (13) located on the fan blade base (14), and the positioning protrusion (15) and the second bolt hole (16) are both arranged on the fan blade base (14).

4. The assembled axial flow fan according to claim 3, characterized in that: Each fan blade (10) further comprises reinforcing ribs (12) located on both sides of the fan blade body (13), wherein the reinforcing ribs (12) connect the fan blade body (13) and the fan blade base (14) to strengthen the connection strength between the fan blade body (13) and the fan blade base (14).

5. The assembled axial flow fan according to claim 4, characterized in that: The blade body (13), the blade base (14) and the reinforcing rib (12) on each blade (10) are an integrated structure.

6. The assembled axial flow fan according to claim 5, characterized in that: Each fan blade (10) is an injection-molded part; and / or each fan blade (10) is in the shape of an irregular trapezoid.

7. The assembled axial flow fan according to claim 3, characterized in that: The blade body (13) of each blade (10) is provided with a rotation direction mark (11) to indicate the rotation direction of the blade (10) during assembly.

8. The assembled axial flow fan according to claim 1, characterized in that: Thread locking glue is filled between the bolt (51) and the first bolt hole (42), and between the bolt (51) and the second bolt hole (16).

9. The assembled axial flow fan according to claim 1, characterized in that: Locking washers are provided between the bolt (51) and the first bolt hole (42), and between the bolt (51) and the second bolt hole (16).

10. A motor, characterized in that: It comprises the assembled axial flow fan as described in any one of claims 1 to 9.

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