Fan shroud and stationary blade combination structure

Abstract

The invention provides a fan shield and a stationary blade combination structure. The fan protective cover comprises a central ring sheet, a plurality of protective rods and a plurality of protective ribs. The center ring piece is fixed on the motor base, the protection rods extend in the radial direction and are arranged in a radial mode with the center ring piece as the center, and the protection ribs are arranged at intervals in a concentric circle mode and connected with the protection rods in series. Each stationary blade comprises a stationary blade body, an inner combination piece and an outer combination piece, and the inner combination piece and the outer combination piece are arranged at the two tail ends of the stationary blade body respectively. And the stationary blade body is fixed on one side of the fan shield by combining the inner combination sheet with one end of the guard bar and combining the outer combination sheet with the other opposite end of the guard bar, so that the stationary blades are radially arranged and combined on the fan shield. Therefore, the stationary blade is combined with the fan shield, so that the efficiency of the fan is improved and the noise is reduced.

Description

Technical Field

[0001] The present invention relates to a fan device, in particular to a fan device with stationary blades. Background Art

[0002] A cooling fan is a common cooling device. A general fan device is composed of a motor, a hub, and a plurality of fan blades arranged around the hub. The motor drives the hub to rotate, and the fan blades push the fluid to flow.

[0003] In addition, in order to enhance the performance of the fan, a general fan device may be equipped with a plurality of additional stator blades to increase the wind pressure and air volume of the fan device and reduce the noise generated during operation. Furthermore, most of the current fan devices fix the stator blades on the hub or the shell seat. However, the assembly method of the stator blade structure is relatively complicated and increases the thickness of the hub or the shell seat, resulting in an increase in the overall volume of the fan device and an increase in cost.

[0004] In view of this, the inventor has devoted himself to studying the above-mentioned prior art and has applied the theory to try his best to solve the above-mentioned problems, which has become the goal of the inventor's development. Summary of the invention

[0005] The object of the present invention is to provide a fan shroud and stator blade combination structure, which combines the stator blades with the fan shroud to improve the fan efficiency and reduce the noise.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a fan shroud and a stator blade combination structure, including a fan shroud and a stator blade combination structure. The fan shroud includes a center ring plate, a plurality of guard rods and a plurality of guard ribs. The center ring plate is fixed on the motor base, the guard rods extend radially and are arranged radially with the center ring plate as the center, and the guard ribs are arranged at intervals in concentric circles and connected in series with the guard rods. Each stator blade includes a stator blade body, an inner bonding plate and an outer bonding plate, and the inner bonding plate and the outer bonding plate are respectively arranged at the two ends of the stator blade body. The stator blade body is fixed to one side of the fan shroud by combining the inner bonding plate with one end of the guard rod and the outer bonding plate with the other end opposite to the guard rod, so that the stator blades are combined with the fan shroud in a radial arrangement.

[0007] Compared with the known, the stator blade of the present invention comprises a stator blade body and an inner connecting piece and an outer connecting piece arranged at two ends of the stator blade body. In addition, the stator blade body is fixed to one side of the fan guard by connecting the inner connecting piece to one end of the guard rod and the outer connecting piece to the other end opposite to the guard rod, thereby connecting the stator blade to the fan guard and connecting the stator blade to the fan guard in a radial arrangement; in addition, the characteristic curve of the fan device of the present invention after the stator blade is set can provide higher wind pressure and air volume under the same power compared with the characteristic curve of the fan device without the stator blade, and can avoid noise caused by the increase of the speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A three-dimensional schematic diagram of the fan guard and stator blade combination structure of the present invention

[0009] Figure 2 It is a three-dimensional exploded schematic diagram of the fan shroud and stator blade combination structure of the present invention.

[0010] Figure 3 It is a schematic diagram of the three-dimensional appearance of the stationary blade of the present invention.

[0011] Figure 4 It is a schematic diagram of the three-dimensional appearance of the inner bonding piece of the stationary blade of the present invention.

[0012] Figure 5 It is a schematic diagram of the three-dimensional appearance of the outer connecting piece of the stationary blade of the present invention.

[0013] Figure 6 It is a three-dimensional appearance schematic diagram of the fan guard and stator blade combination structure of the present invention from the other side.

[0014] Figure 7 Schematic diagram of the combination of the inner joint sheet and the guard rod of the present invention ( Figure 1 (a partial enlarged view of part A in FIG. 5 ).

[0015] Figure 8 Schematic diagram of the combination of the outer joint sheet and the guard bar of the present invention ( Figure 1 (a partial enlarged view of part B in FIG. 1 ).

[0016] Fig. 9 It is a schematic diagram of the combination of the support rod and the outer frame cover of the present invention.

[0017] Fig.10 It is a schematic diagram of the application of the fan shroud and stator blades of the present invention.

[0018] Fig.11 for Fig.10 A partial enlarged view of part C.

[0019] Fig.12 It is a schematic diagram of the application of the fan shroud and stator blades of the present invention.

[0020] Figures 13 to 15 The figure is a comparison diagram of characteristic curves of the fan device of the present invention when it is operated with and without stationary blades.

[0021] The reference numerals are as follows:

[0022] 1: Fan guard and stator blade combination structure

[0023] 2: Motor

[0024] 3: Fan blade group

[0025] 4: Motor base

[0026] 5: Flange

[0027] 10: Fan guard

[0028] 11: Center ring

[0029] 12: Guardrail

[0030] 13: Rib guard

[0031] 14: Support rod

[0032] 15: Frame cover

[0033] 150:Fixing hole

[0034] 16: Fixed plate

[0035] 17:Fixer

[0036] 20:Stationary blade

[0037] 21:Static leaf body

[0038] 22: Internal bonding sheet

[0039] 221: Inner folding plate

[0040] 222:Inner buckle groove

[0041] 223: Bezel

[0042] 224: Retaining Wall

[0043] 224: Chamfer

[0044] 23: External bonding sheet

[0045] 230: Groove

[0046] 231: Outer folding plate

[0047] 232: External buckle slot

[0048] 2320: Opening

[0049] 233: Linking segment

[0050] 234: buckle section DETAILED DESCRIPTION

[0051] The detailed description and technical contents of the present invention will be described as follows with reference to the accompanying drawings. However, the accompanying drawings are only for illustrative purposes and are not intended to limit the present invention.

[0052] Please refer to Figure 1, which is a three-dimensional appearance schematic diagram of the fan shroud 10 and the stator blade 20 combination structure of the present invention. The present invention provides a fan shroud and stator blade combination structure 1, including a fan shroud 10 and a plurality of stator blades 20. The plurality of stator blades 20 are combined with the fan shroud 10 in a radial arrangement. In addition, the fan shroud 10 is combined with a plurality of stator blades 20 and is arranged on the downstream side (air outlet side) of a fan blade group 3 driven by a motor 2. The fan blade group 3 improves wind pressure and efficiency by arranging a plurality of stator blades 20, and can reduce noise during operation.

[0053] Reference Figure 2 , which is a three-dimensional exploded schematic diagram of the fan shroud 10 and the stator blade 20 combination structure of the present invention. The fan shroud 10 includes a central ring plate 11, a plurality of guard rods 12 and a plurality of guard ribs 13. The plurality of guard rods 12 extend radially and are arranged radially with the central ring plate 11 as the center. The plurality of guard ribs 13 are arranged at intervals in concentric circles and connect the plurality of guard rods 12 in series. In addition, each stator blade 20 is respectively fixed at the corresponding two ends of a guard rod 12, so that the plurality of stator blades 20 are combined with the fan shroud 10 in a radial arrangement. In addition, the fan shroud 10 combined with the plurality of stator blades 20 is arranged on the air outlet side of the fan blade group 3, and the fan blade group 3 is driven by the motor 2 to rotate and generate a forced airflow.

[0054] In one embodiment of the present invention, the fan guard 10 further includes a plurality of support rods 14 and an outer frame cover 15. The outer frame cover 15 surrounds one side of the plurality of guard ribs 13 and is connected to one end of the plurality of support rods 14. The other ends of the plurality of support rods 14 are connected to the center ring piece 11.

[0055] Please refer to Figure 3 , which is a three-dimensional appearance schematic diagram of the stationary blade 20 of the present invention. Each stationary blade 20 of the present invention includes a stationary blade body 21, an inner connecting piece 22 and an outer connecting piece 23. The inner connecting piece 22 and the outer connecting piece 23 are respectively arranged at the two ends of the stationary blade body 21.

[0056] Please continue to refer to Figure 4 , which is a three-dimensional appearance schematic diagram of the inner bonding piece 22 of the stationary blade 20 of the present invention. The inner bonding piece 22 includes an inner folding plate 221, an inner buckle groove 222 and an embedding groove 223. The inner folding plate 221 is connected to an inner end of the stationary blade body 21 and is bent and extended. The inner buckle groove 222 is arranged on one side of the inner folding plate 221. Specifically, the inner buckle groove 222 is arranged on one side of the embedding groove 223 and is connected to the embedding groove 223. In addition, the embedding groove 223 is arranged on one side of the inner folding plate. One side of the embedding groove 223 is a retaining wall 224. The bottom side of the retaining wall 224 has a chamfer 225 to facilitate clamping.

[0057] Please refer to Figure 5, which is a three-dimensional appearance schematic diagram of the outer connecting piece 23 of the stationary blade 20 of the present invention. The outer connecting piece 23 includes an outer folding plate 231 and an outer buckle groove 232. The outer folding plate 231 is connected to an outer end of the stationary blade body 21 and bends and extends. The outer buckle groove 232 is arranged on one side of the outer folding plate 231. Specifically, the outer connecting piece 23 also includes a connecting section 233 and a buckling section 234. The connecting section 233 connects the outer folding plate 231 and the buckling section 234. The outer buckle groove 232 extends from the connecting section 233 to the buckling section 234, and the outer buckle groove 232 includes an opening 2320 located at the buckling section. It should be noted that a through groove 230 is formed between the outer folding plate 231, the connecting section 233 and the buckling section 234.

[0058] Please refer to Figure 6 , which is a three-dimensional schematic diagram of the fan guard 10 and the stator blade 20 combination structure of the present invention from the other side. In this embodiment, the stator blade 20 is fixed to one side of the fan guard 10 by the inner joining piece 22 being joined to one end of one of the guard rods 12 and the outer joining piece 23 being joined to the other end of one of the guard rods 12.

[0059] It should be noted that the motor 2 includes a motor base 4 and a flange 5 disposed on the motor base 4. The central ring piece 11 of the fan guard 10 is coupled to the flange 5, and the flange 5 carries the inner coupling piece 22. In addition, the embedding groove 223 is disposed on a side surface of the inner folding plate 221, and the embedding groove 223 is embedded with the central ring piece 11. Further, the coupling method of the stationary blade 20 and the guard rod 12 is described in detail below.

[0060] Please refer to Figure 7 , which is a schematic diagram of the combination of the inner combining piece 22 and the guard rod 12 of the present invention. Figure 7 for Figure 1 The enlarged partial view of the A part in the middle. The inner folding plate 221 is locked with the center ring piece 11. The inner buckle groove 222 is set on one side of the inner folding plate 221, and the inner buckle groove 222 is buckled with one end of one of the guard rods 12. It is worth noting that the inner buckle groove 222 is provided with an undercut, so that the guard rod 12 will not fall out after being buckled into the inner buckle groove 222, so as to be firmly positioned on the fan guard 10.

[0061] Please also refer to Figure 8 , which is a schematic diagram of the combination of the outer combining piece 23 and the guard rod 12 of the present invention. Figure 8 for Figure 1The outer buckle groove 232 is provided on one side of the outer folding plate 231 and is buckled with the other end of the guard bar 12. Similarly, the outer buckle groove 232 is provided with an undercut, so that the guard bar 12 will not fall out after being buckled into the outer buckle groove 232, thereby being firmly positioned on the fan guard 10.

[0062] Please refer to Fig. 9 , which is a schematic diagram of the combination of the support rod 12 and the outer frame cover 15 of the present invention. In one embodiment of the present invention, the fan guard 10 also includes a plurality of fixing plates 16 and a plurality of fixing members 17. In this embodiment, the plurality of fixing members 17 are configured as screws. In addition, the plurality of support rods 14 are arranged in pairs, and a fixing plate 16 is combined at the end. On the other hand, the outer frame cover 15 is provided with a plurality of fixing holes 150 on a side facing the plurality of support rods 14. The plurality of support rods 14 are combined with the outer frame cover 15 through a plurality of fixing members 17-through a plurality of fixing plates 16 and a plurality of fixing holes 150.

[0063] It should be noted that the outer joint piece 23 of each stationary blade 20 is combined with the guard rod 12 and is locked on the guard rib 13. Specifically, a guard rib 13 located at the outermost side is locked in the through groove 230 at the end of the outer joint piece 23.

[0064] Please refer to Fig.10 , which is a schematic diagram of the application of the fan shroud 10 and the stator blade 20 of the present invention. The fan shroud and stator blade combination structure 1 of the present invention includes a fan shroud 10 and a plurality of stator blades 20. The inner joining piece 22 of each stator blade 20 is fixed to the flange 5 of the motor base 4 by clamping the center ring piece 11. The two ends of the stator blade 20 are fixed to the fan shroud 10 by clamping the two ends of the guard rod 12 by the inner joining piece 22 and the outer joining piece 23. In addition, Fig.10 It can also be seen that the outer joint piece 23 is locked on the outermost protective rib 13. Fig.11 , which is Fig.10 The enlarged partial view of the C portion in the middle. The inner coupling piece 22 is mounted on the motor base 4. The bottom side of the inner coupling piece 22 is provided with an embedding groove 223, and one side of the embedding groove 223 is a retaining wall 224 with a chamfer 225. In addition, the setting of the chamfer 225 facilitates the center ring piece 11 to be forced into the embedding groove 223 and achieve mutual locking.

[0065] Please refer to Fig.12 , which is a schematic diagram of the application of the fan guard 10 and the stationary blades 20 of the present invention. After the fan guard 10 and the stationary blades 20 of the present invention are assembled in the above manner, the fan guard 10 combined with a plurality of stationary blades 20 is arranged on the air outlet side of the fan blade group 3. Accordingly, driven by the motor 2, the fan blade group 3 improves the operating efficiency by arranging a plurality of stationary blades 20.

[0066] Please refer to Fig.13 , which is a comparison diagram of the characteristic curves of the fan device of the present invention when it is operated with and without stator blades. Under the same air volume and rotation speed, the characteristic curve of the fan device of the present invention with stator blades (indicated by a thick line) has a higher wind pressure than the characteristic curve without stator blades (indicated by a thin line).

[0067] Please continue to refer to Fig.14 , which is a comparison diagram of the characteristic curves of the fan device of the present invention when it is operated with and without stator blades. Under the same wind pressure and speed, the characteristic curve of the fan device of the present invention with stator blades (indicated by a thick line) has a higher fan efficiency than the characteristic curve without stator blades (indicated by a thin line).

[0068] It should be noted that the definition of fan efficiency here is as follows:

[0069]

[0070] It can be seen from the above formula that under the same air volume and air pressure, the fan device with stationary blades of the present invention has lower power consumption.

[0071] Please refer to Fig.15 , which is a comparison diagram of the characteristic curves of the fan device of the present invention when it is running with and without stator blades. Under the same wind pressure and speed, the characteristic curve of the fan device of the present invention with stator blades (indicated by a thick line) has a lower noise value than the characteristic curve without stator blades (indicated by a thin line).

[0072] In summary, the characteristic curve of the fan device provided with stator blades of the present invention is compared with the characteristic curve of the fan device not provided with stator blades. At the same power, higher wind pressure and air volume can be provided, and noise caused by increased speed can be avoided.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Other equivalent changes that apply the patent spirit of the present invention should all fall within the patent scope of the present invention.

Claims

1. A fan guard and stator blade combination structure, comprising: A fan guard, comprising a central ring, a plurality of guard rods and a plurality of guard ribs, wherein the central ring is fixed on a motor base, the plurality of guard rods extend radially and are arranged radially with the central ring as the center, and the plurality of guard ribs are arranged at intervals in concentric circles and are connected in series with the plurality of guard rods; and A plurality of stationary blades, each of which comprises a stationary blade body, an inner connecting piece and an outer connecting piece, wherein the inner connecting piece and the outer connecting piece are respectively arranged at two ends of the stationary blade body, and the stationary blade body is fixed to one side of the fan guard by connecting the inner connecting piece to one end of one of the guard rods and connecting the outer connecting piece to the other end opposite to the one of the guard rods, so that the plurality of stationary blades are radially arranged and connected to the fan guard.

2. The fan guard and stator blade combination structure as described in claim 1, wherein the fan guard also includes an outer frame cover and a plurality of support rods, the outer frame cover surrounds one side of the plurality of said guard ribs and is connected to one end of the plurality of said support rods, and the other ends of the plurality of said support rods are connected to the center ring piece.

3. The fan guard and stationary blade combination structure as described in claim 2, wherein the fan guard also includes a plurality of fixing plates and a plurality of fixing members, the plurality of support rods are arranged in pairs and combined with one of the fixing plates, the outer frame cover is provided with a plurality of fixing holes on a side facing the plurality of support rods, and the plurality of support rods are combined with the outer frame cover through a plurality of fixing members - passing through a plurality of fixing plates and a plurality of fixing holes.

4. The fan guard and stator blade combination structure as described in claim 1, wherein the inner combination piece includes an inner folding plate and an inner buckle groove, the inner folding plate is connected to an inner end of the stator blade body and is bent and extended, and the inner buckle groove is arranged on a side edge of the inner folding plate and buckles one end of one of the guard rods.

5. The fan guard and stationary blade combination structure as claimed in claim 4, wherein the inner combination piece further comprises an embedding groove, the embedding groove is arranged on a side surface of the inner folding plate and is embedded with the center ring piece. 6 . The fan guard and stationary blade combination structure as claimed in claim 5 , wherein the inner buckle groove is arranged on one side of the embedding groove and communicates with the embedding groove. 7 . The fan guard and stationary blade combination structure as claimed in claim 5 , wherein one side of the embedding groove is a retaining wall, and the bottom side of the retaining wall has a chamfer.

8. A fan guard and stator blade combination structure as described in claim 4, wherein the outer combination piece includes an outer folding plate and an outer buckle groove, the outer folding plate is connected to an outer end of the stator blade body and is bent and extended, and the outer buckle groove is arranged on one side of the outer folding plate and is buckled with the other end of one of the guard rods.

9. The fan guard and stator blade combination structure as described in claim 8, wherein the outer combination piece further includes a connecting section and a buckling section, the connecting section connects the outer folding plate and the buckling section, the outer buckling groove extends from the connecting section to the buckling section, and the outer buckling groove includes an opening located at the buckling section.

10. The fan guard and stationary blade combination structure as claimed in claim 9, wherein a through slot is formed between the outer folding plate, the connecting section and the locking section, and a protective rib located at the outermost side is locked in the through slot.

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