Fan impeller and fan

Abstract

The utility model discloses a fan impeller and a fan, and relates to the improvement of an impeller structure. Comprising a first mounting plate, a second mounting plate and fan blades, the fan blades are fixed between the first mounting plate and the second mounting plate, and each fan blade comprises a plurality of blades, a first mounting ring and a second mounting ring; the first mounting ring and the second mounting ring are detachably fixed to the opposite end faces of the first mounting plate and the second mounting plate, the first mounting ring and the second mounting ring are coaxial, one ends of the blades are fixed to the first mounting ring, and the other ends of the blades are fixed to the second mounting ring. The other ends of the multiple blades are fixed to the second installation ring, the blades are radiated outwards in a radial mode with the circle centers of the first installation ring and the second installation ring as the center, and the adjacent blades are parallel to each other. The assembly structure has the advantages that assembly is convenient, the part application range is wide, the production cost is reduced, and meanwhile material waste is reduced.

Description

Technical Field

[0001] The utility model relates to an improvement of an impeller structure, in particular to a fan impeller and a fan. Background Art

[0002] The impeller of the fan is one of the necessary components of the fan and is also a core component. The existing impeller is generally composed of blades and hubs. During assembly, due to different impeller parameters, it is necessary to continuously open molds for production. Generally, impellers of different specifications only have different windward angles of the blades. Constantly opening molds for production reduces production efficiency on the one hand and causes material waste on the other. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a fan impeller and a fan.

[0004] The utility model is implemented by the following technical solutions:

[0005] On the one hand, the utility model discloses a fan impeller, including a first mounting plate, a second mounting plate and fan blades, wherein the fan blades are fixed between the first mounting plate and the second mounting plate, and the fan blades include a plurality of blades, a first mounting ring and a second mounting ring, the first mounting ring and the second mounting ring are detachably fixed on the opposite end surfaces of the first mounting plate and the second mounting plate, and the first mounting ring and the second mounting ring are coaxial, one end of a plurality of the blades is fixed on the first mounting ring, and the other end of a plurality of the blades is fixed on the second mounting ring, the blades radiate outward radially with the center of the first mounting ring and the second mounting ring as the center, and adjacent blades are parallel to each other.

[0006] The first mounting ring and the second mounting ring have the same structure and include a plurality of ring pieces. The first mounting plate and the second mounting plate are provided with a plurality of annular grooves coaxially with the first mounting ring and the second mounting ring, respectively. The ring pieces slide along one group of the annular grooves.

[0007] Each blade has two ends provided with slots respectively, and the slots are opened along the length direction of the blade. The first mounting ring is inserted into one of the slots, and the second mounting ring is inserted into the other slot.

[0008] A connecting strip is provided on the ring sheet, and one end of the connecting strip is inserted into one group of the annular sliding grooves.

[0009] The diameter of the first mounting ring is greater than the diameter of the second mounting ring, and the first mounting ring and the second mounting ring are arranged along the width direction of the blade.

[0010] The first mounting ring is close to the first mounting plate, and the second mounting ring is close to the second mounting plate.

[0011] The first mounting plate and the second mounting plate are provided with through holes, and the through holes are coaxial with the first mounting ring.

[0012] A limiting ring is provided on the first mounting plate, the limiting ring is arranged around the through hole, the limiting ring is perpendicular to the first mounting plate, and an arc-shaped transition surface is formed between the first mounting plate and the limiting ring;

[0013] The transition surface comprises a first transition arc surface and a second transition arc surface, the first transition arc surface is fixed to the second transition arc surface, one end of the first transition arc surface is fixed to the first mounting plate, one end of the second transition arc surface is connected to the limiting ring, and the first transition arc surface and the second transition arc surface form a smooth transition surface;

[0014] The radius of the first transition arc surface is R1, and the radius of the second transition arc surface is R2, R1=156.04 mm, R2=26 mm.

[0015] On the other hand, the utility model discloses a fan, the fan comprising a fan impeller, the fan impeller is rotatably mounted on a bracket, and the bracket is provided with a motor for driving the fan impeller to rotate;

[0016] The fan impeller is sleeved with a volute on the outside, the volute is provided with an air inlet and an air outlet, the air outlet is arranged along the tangent direction of the volute, and the air inlet is provided on the end surface of the volute;

[0017] The diameter of the outer edge of the volute gradually expands from the air inlet direction of the air inlet to the air outlet direction of the air outlet.

[0018] A rotating shaft is passed through the center of the fan impeller, and both ends of the rotating shaft are rotatably connected to the bracket. A fixed sprocket is sleeved on the end of the rotating shaft, and the motor is connected to the sprocket through a chain transmission.

[0019] Compared with the prior art, the blades of the utility model are fixed by the first mounting ring and the second mounting ring, and the blades are plugged into the first mounting ring and the second mounting ring and fixed to the first mounting ring and the second mounting ring. During assembly, the angle of the blades can be adjusted by selecting mounting rings of different diameters, so that fan impellers of different specifications can be produced, that is, parts of general specifications can be used to assemble fans of different specifications, which is convenient to assemble and has a wide range of parts applications, reducing production costs while reducing material waste, and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the blower in the utility model;

[0021] Figure 2 It is a structural schematic diagram of the fan impeller in the utility model;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the impeller of the fan in the utility model;

[0023] Figure 4 This is a schematic diagram of the fan blade structure of the fan impeller in the utility model Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the structure of the first mounting plate or the second mounting plate of the fan impeller in the utility model. Figure 1 ;

[0025] Figure 6 This is a schematic diagram of the fan blade structure of the fan impeller in the utility model Figure 2 ;

[0026] Figure 7 This is a schematic diagram of the structure of the first mounting plate or the second mounting plate of the fan impeller in the utility model. Figure 2 ;

[0027] Figure 8 It is a schematic diagram of the volute structure of the blower in the utility model;

[0028] Fig. 9 It is a schematic diagram of the outer edge of the volute of the blower of the utility model;

[0029] In the figure: R1 is the radius of the first transition surface, and R2 is the radius of the second transition surface;

[0030] In the figure: 1, electric motor; 2, bracket; 3, fan impeller; 31, first mounting plate; 311, limiting ring; 32, second mounting plate; 33, fan blade; 331, blade; 332, first mounting ring; 333, second mounting ring; 334, slot; 335, ring piece; 336, annular slide; 337, connecting strip; 4, volute; 41, air outlet; 42, enclosure. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0032] Reference Figure 1-9A fan, the core component of the fan, the fan impeller 3, is driven to rotate by the motor 1. Specifically, the fan impeller 3 is mounted on a bracket 2, and a rotating shaft is passed through the center of the fan impeller 3, and both ends of the rotating shaft are mounted on the bracket 2, so that the fan impeller 3 can rotate freely on the bracket 2. The motor 1 is fixedly installed below the bracket 2. A sprocket is sleeved on the end of the rotating shaft, and a sprocket is correspondingly sleeved on the driving shaft of the motor 1. The pair of sprockets are driven by a chain, so that the motor 1 can be used as a prime mover to drive the fan impeller 3 to rotate, thereby driving the fan impeller 3 to rotate.

[0033] The outer shell of the fan is a volute, and the fan impeller is installed inside the volute. The end face of the volute is provided with an air inlet and an air outlet. The air outlet is arranged along the tangent direction of the volute and is connected to the inside of the volute, and the air inlet is arranged on the end face of the volute. When the fan impeller rotates, air enters the volute from the air inlet and is driven by the fan impeller to move toward the air outlet.

[0034] Taking the direction of air from the air inlet to the air outlet as the reference direction, the direction of the outer edge of the volute gradually expands. The preferred volute is made up of four sections, and the centers of the four sections are all the centers of the air inlet, or the center is the hole for driving the fan impeller to rotate. The ratio of the first section, the second section, the third section and the fourth section is 1: (1-1.46): (1-1.96): (1-2.34), and preferably, the ratio can be: 1: 1.23: 1.48: 1.73. The radius of the first section is preferably 575.12mm, and one end of the first section is connected to one side of the air outlet, and is fixedly connected to the air outlet with a panel, and the connection can be chamfered with a radius of 10.27mm to form a smooth connection surface. There is a smooth transition between the first section and the second section, and the radius of the second section is preferably 715.62mm. There is also a smooth transition between the second section and the third section, and the radius of the third section is preferably 860.04mm, and the third section goes around the fan impeller and passes through the lowest point of the fan impeller. The fourth section is between the third section and the air outlet, and there is also a smooth transition between the third section and the fourth section. The radius of the fourth section is the largest, and is preferably 1002.94mm. One end of the fourth section is also fixed to the air outlet with a panel, and the panel is tangent to the fourth section to form a smooth fixation. There is a flange at the end face of the air outlet, that is, the flange and the panel together constitute the air outlet. The use of a gradually expanding volute can increase the wind pressure, so that the wind speed at the air outlet becomes larger.

[0035] One implementation of the fan impeller 3 is to include a first mounting plate 31, a second mounting plate 32 and a fan blade 33, wherein the fan blade 33 is fixed between the first mounting plate 31 and the second mounting plate 32, and the fan blade 33 includes a plurality of blades 331, a first mounting ring 332 and a second mounting ring 333, wherein the first mounting ring 332 and the second mounting ring 333 are detachably fixed on the opposite end faces of the first mounting plate 31 and the second mounting plate 32, and the first mounting ring 332 and the second mounting ring 333 are coaxial, one end of a plurality of blades 331 is fixed on the first mounting ring 332, and the other end of a plurality of blades 331 is fixed on the second mounting ring 333, and the blades 331 radiate outward radially with the center of the first mounting ring 332 and the second mounting ring 333 as the center, and adjacent blades 331 are parallel to each other. After installation is completed, the blades 331 can be fixed to the first mounting ring 332 and the second mounting ring 333 by welding. At the same time, the side of the blade 331 needs to abut against the first mounting plate 31 and the second mounting plate 32, and then the first mounting plate 31 and the second mounting plate 32 also abut against the blade 331 and are also fixed to the blade 331 by welding. Before welding, since the blade 331 and the first mounting ring 332 and the second mounting ring 333 are all in a non-fixed state, the angle of the blade 331 can be flexibly adjusted, and then the fan impeller 3 of different specifications can be assembled, so that the application range of the parts is wider.

[0036] The first mounting ring 332 and the second mounting ring 333 have the same structure. The first mounting ring 332 and the second mounting ring 333 may be an integral annular structure as described above, or may include a plurality of ring pieces 335. The first mounting plate 31 and the second mounting plate 32 are provided with a plurality of annular grooves 336 coaxially with the first mounting ring 332 and the second mounting ring 333, respectively, and the ring piece 335 slides along one group of the annular grooves 336 to meet different windward angle requirements.

[0037] Each blade 331 is provided with a slot 334 at both ends, and the slot 334 is opened along the length direction of the blade 331. The first mounting ring 332 is inserted into one of the slots 334, and the second mounting ring 333 is inserted into the other slot 334. A connecting strip 337 is provided on the ring piece 335, and one end of the connecting strip 337 is inserted into one of the annular grooves 336. The diameter of the first mounting ring 332 is greater than the diameter of the second mounting ring 333. The first mounting ring 332 and the second mounting ring 333 are arranged along the width direction of the blade 331. The first mounting ring 332 is close to the first mounting plate 31, and the second mounting ring 333 is close to the second mounting plate 32. A through hole is opened on the first mounting plate 31 and the second mounting plate 32, and the through hole is coaxial with the first mounting ring 332. A limiting ring 311 can be fixed on the first mounting plate 31. The limiting ring 311 needs to be perpendicular to the first mounting plate 31 and the limiting ring 311 is arranged around the through hole, which plays a limiting role during assembly, and the assembly is more convenient. A transition surface can be bent between the limiting ring 311 and the first mounting plate 31 . The transition surface is a smooth curved surface. The transition surface extends from the first mounting plate 31 toward the limiting ring to form a smooth transition between the limiting ring 311 and the first mounting plate 31 .

[0038] The transition surface is composed of at least a first transition surface and a second transition surface. The first transition surface is connected to the second transition surface to form a smooth transition surface for installing a limit ring. One end of the first transition surface is fixed to the first mounting plate, and the radius R1 of the first transition surface is preferably R1=156.04mm, until the edge of the first transition surface smoothly transitions to the second transition surface, and the radius R2 of the second transition surface is preferably R2=26mm. The second transition surface extends outward until the edge of the second transition surface is parallel to the limit ring 311 for the limit ring 311 to be mounted, so that the limit ring 311 can be accurately fixed to the second transition surface.

[0039] Compared with the prior art, the blade 331 of the utility model is fixed by the first mounting ring 332 and the second mounting ring 333, and the blade 331 is plugged into the first mounting ring 332 and the second mounting ring 333 and fixed with the first mounting ring 332 and the second mounting ring 333. During assembly, the angle of the blade 331 can be adjusted by selecting mounting rings of different diameters, so that fan impellers 3 of different specifications can be produced, that is, parts of general specifications can be used to assemble fans of different specifications, and the parts have a wide range of applications, which reduces production costs and reduces material waste, and is more environmentally friendly.

[0040] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A fan impeller, comprising a first mounting plate, a second mounting plate and a fan blade, characterized in that: The fan blades are fixed between the first mounting plate and the second mounting plate, and the fan blades include a plurality of blades, a first mounting ring and a second mounting ring. The first mounting ring and the second mounting ring are detachably fixed on opposite end surfaces of the first mounting plate and the second mounting plate, and the first mounting ring and the second mounting ring are coaxial. One end of a plurality of the blades is fixed on the first mounting ring, and the other end of a plurality of the blades is fixed on the second mounting ring. The blades radiate outward radially with the center of the first mounting ring and the second mounting ring as the center, and adjacent blades are parallel to each other.

2. A fan impeller according to claim 1, characterized in that: The first mounting ring and the second mounting ring have the same structure and include a plurality of ring pieces. The first mounting plate and the second mounting plate are provided with a plurality of annular grooves coaxially with the first mounting ring and the second mounting ring, respectively. The ring pieces slide along one group of the annular grooves.

3. A fan impeller according to claim 1, characterized in that: Each blade has two ends provided with slots respectively, and the slots are opened along the length direction of the blade. The first mounting ring is inserted into one of the slots, and the second mounting ring is inserted into the other slot.

4. A fan impeller according to claim 2, characterized in that: A connecting strip is provided on the ring sheet, and one end of the connecting strip is inserted into one group of the annular sliding grooves.

5. The fan impeller according to claim 1, characterized in that: The diameter of the first mounting ring is greater than the diameter of the second mounting ring, and the first mounting ring and the second mounting ring are arranged along the width direction of the blade.

6. A fan impeller according to claim 5, characterized in that: The first mounting ring is close to the first mounting plate, and the second mounting ring is close to the second mounting plate.

7. A fan impeller according to claim 1, characterized in that: The first mounting plate and the second mounting plate are provided with through holes, and the through holes are coaxial with the first mounting ring.

8. A fan impeller according to claim 7, characterized in that: A limiting ring is provided on the first mounting plate, the limiting ring is arranged around the through hole, the limiting ring is perpendicular to the first mounting plate, and an arc-shaped transition surface is formed between the first mounting plate and the limiting ring; The transition surface comprises a first transition arc surface and a second transition arc surface, the first transition arc surface is fixed to the second transition arc surface, one end of the first transition arc surface is fixed to the first mounting plate, one end of the second transition arc surface is connected to the limiting ring, and the first transition arc surface and the second transition arc surface form a smooth transition surface; The radius of the first transition arc surface is R1, and the radius of the second transition arc surface is R2, R1=156.04 mm, R2=26 mm.

9. A fan, characterized in that: The fan comprises a fan impeller according to any one of claims 1 to 7, wherein the fan impeller is rotatably mounted on a bracket, and the bracket is provided with a motor for driving the fan impeller to rotate; The fan impeller is sleeved with a volute on the outside, the volute is provided with an air inlet and an air outlet, the air outlet is arranged along the tangent direction of the volute, and the air inlet is provided on the end surface of the volute; The diameter of the outer edge of the volute gradually expands from the air inlet direction of the air inlet to the air outlet direction of the air outlet.

10. A fan according to claim 9, characterized in that: A rotating shaft is passed through the center of the fan impeller, and both ends of the rotating shaft are rotatably connected to the bracket. A fixed sprocket is sleeved on the end of the rotating shaft, and the motor is connected to the sprocket through a chain transmission.

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