Efficient booster fan

Abstract

An efficient booster fan comprises a fixed impeller assembly, the fixed impeller assembly comprises a first fixed impeller and a second fixed impeller, the first fixed impeller is arranged at the air inlet end of the second fixed impeller, the first fixed impeller is provided with a first guide vane, and the second fixed impeller is provided with a second guide vane; the included angle between the first guide vane and the axis of the fixed impeller assembly is larger than the included angle between the second guide vane and the axis of the fixed impeller assembly. One end of the driving assembly is connected with the air outlet end of the second fixed impeller, and the other end of the driving assembly is connected with the rear cover; the bottom of the wind scooper is clamped with the side wall of the second fixed impeller; the movable impeller is arranged in the wind scooper, and the power output end of the driving assembly penetrates through the first fixed impeller and the second fixed impeller to be connected with the movable impeller to transmit power. The fan has the advantages that compared with an existing fan with the same size and the same specification, the efficiency is higher, the flow rate is increased from original 16.5 to existing 19.8 or above, and the fan level of the existing industry is successfully broken through.

Description

Technical Field

[0001] The utility model belongs to the field of driving elements, and particularly relates to an efficient supercharging fan. Background Art

[0002] As a commonly used wind power element on the market, the fan is applied to many household appliances. However, the efficiency of the current traditional fan still needs to be improved and can no longer meet the growing usage requirements. Therefore, an efficient supercharging fan needs to be proposed. Content of the Utility Model

[0003] To solve the above problems, the utility model provides an efficient supercharging fan.

[0004] The utility model adopts the following technical solutions:

[0005] An efficient supercharging fan, comprising:

[0006] A fixed impeller assembly, which includes a first fixed impeller and a second fixed impeller. The first fixed impeller is arranged at the air inlet end of the second fixed impeller. The first fixed impeller has first guide vanes, and the second fixed impeller has second guide vanes. The included angle between the first guide vanes and the axis of the fixed impeller assembly is greater than the included angle between the second guide vanes and the axis of the fixed impeller assembly;

[0007] A drive assembly, one end of which is connected to the air outlet end of the second fixed impeller, and the other end of the drive assembly is connected to the rear cover;

[0008] An air guide cover, the bottom of which is clamped to the side wall of the second fixed impeller;

[0009] A moving impeller, which is arranged inside the air guide cover. The power output end of the drive assembly passes through the first fixed impeller and the second fixed impeller to be connected to the moving impeller for power transmission.

[0010] Optionally, the first fixed impeller further includes: a support cap and a flow guide ring. The support cap is arranged in the middle of the first fixed impeller. A plurality of the first guide vanes are evenly arranged around the support cap. The flow guide ring is arranged outside the first guide vanes and is connected to the first guide vanes. An installation hole is arranged on the support cap, and a first positioning groove is arranged on the side wall of the installation hole.

[0011] Optionally, the second fixed impeller further includes: an inner support cylinder, an outer support cylinder and a support frame. The inner support cylinder is arranged inside the outer support cylinder. A plurality of the second guide vanes are evenly arranged between the inner support cylinder and the outer support cylinder. The support frame is arranged at the air inlet end of the inner support cylinder. A boss that cooperates with the support cap is arranged on the support frame, and a first positioning protrusion that cooperates with the first positioning groove is arranged on the side wall of the boss.

[0012] Optionally, the support cap and the support frame are also provided with screw holes for assembly and fixation.

[0013] Optionally, the drive assembly includes: a stator, a rotor, a stator base, and a drive control board. The stator base is snap-fitted with the second impeller. The stator is disposed on the stator base. The rotor passes through the stator. A magnet is provided on the part of the rotor located inside the stator. The power output end of the rotor passes through the fixed impeller assembly and is connected to the impeller. The drive control board is disposed on the stator base and is electrically connected to the coil inside the stator. The rear cover covers the drive control board.

[0014] Optionally, the inner wall of the inner support cylinder is provided with first support ribs for cooperating with the stator base, and the outer side of the stator base is provided with second positioning grooves for cooperating with the first support ribs.

[0015] Optionally, the inner side of the stator base is provided with second support ribs for cooperating with the stator, and the outer side of the stator is provided with third positioning grooves for cooperating with the first support ribs.

[0016] Optionally, the stator base is provided with a plurality of hollow parts.

[0017] Optionally, the impeller includes: a backing plate, an arc-shaped top plate, and a plurality of blades disposed between the backing plate and the arc-shaped top plate. A shaft hole is provided in the center of the backing plate for connecting to the power output end of the drive assembly. The blades are arranged in a circular array at the edge of the backing plate with the center of the backing plate as the center of the circle. An air inlet is provided in the middle of the arc-shaped top plate.

[0018] The beneficial effect of the present utility model is that the efficiency of the fans of the same volume and specification on the current market reaches about 53% at most, while the fans of the present utility model can increase the efficiency to more than 56%. At the same time, the flow rate is increased from the original 16.5 to the current 19.8 or more, with stronger performance, and successfully breaks through the fan level of the existing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the split state of the present utility model;

[0020] Figure 2 is a schematic internal structure diagram of the present utility model;

[0021] Figure 3 is a schematic structural diagram of the first impeller of the present utility model;

[0022] Figure 4 is a schematic structural diagram of the axis relationship between the first guide vane and the fixed impeller assembly of the present utility model;

[0023] Figure 5 is a schematic structural diagram of the second impeller of the present utility model;

[0024] Figure 6 This is a schematic structural diagram of the axis relationship between the second guide vane and the fixed impeller assembly of the present utility model;

[0025] Figure 7 This is a schematic internal structure diagram of the second impeller of the present utility model

[0026] Figure 8 This is a schematic structural diagram of the stator seat of the present utility model;

[0027] Figure 9 This is a schematic structural diagram of the moving impeller of the present utility model. Specific embodiments

[0028] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Embodiment

[0029] As Figures 1-6 shown, a high-efficiency supercharging fan includes:

[0030] A fixed impeller assembly 1, the fixed impeller assembly 1 includes a first fixed impeller 11 and a second fixed impeller 12. The first fixed impeller 11 is arranged at the air inlet end of the second fixed impeller 12. The first fixed impeller 11 has a first guide vane 111, and the second fixed impeller 12 has a second guide vane 121. The included angle between the first guide vane 111 and the axis of the fixed impeller assembly 1 is greater than the included angle between the second guide vane 121 and the axis of the fixed impeller assembly 1;

[0031] A driving assembly 2, one end of the driving assembly 2 is connected to the air outlet end of the second fixed impeller 12, and the other end of the driving assembly 2 is connected to the rear cover 5;

[0032] An air guide cover 3, the bottom of the air guide cover 3 is clamped to the side wall of the second fixed impeller 12;

[0033] A moving impeller 4, the moving impeller 4 is arranged in the air guide cover 3, and the power output end of the driving assembly 2 passes through the first fixed impeller 11 and the second fixed impeller 12 to be connected to the moving impeller 4 to transmit power.

[0034] When the fan is working, the moving impeller 4 is driven by the driving assembly 2 to rotate at a high speed to suck air flow from the guide cover. When the sucked high-speed air flow passes through the first guide vane 111 of the first fixed impeller 11, it is supercharged, and then passes through the second guide vane 121 of the second fixed impeller 12 to further increase the vacuum degree, realizing secondary supercharging, thereby improving the fan efficiency.

[0035] As Figure 3 、 4As shown, the first stationary impeller 11 further includes: a support cap 112 and a guide ring 113. The support cap 112 is disposed in the middle of the first stationary impeller 11. A plurality of the first guide vanes 111 are evenly arranged around the support cap 112. The guide ring 113 is disposed on the outer ring of the first guide vanes 111 and connected to the first guide vanes 111. An installation hole 114 is provided on the support cap 112, and a first positioning groove 115 is provided on the side wall of the installation hole 114. The guide ring 113 can effectively prevent the irregular flow of the fluid, reduce the wind resistance and the generation of tip vortices, and significantly improve the flow efficiency of the fluid. After testing, there is a significant improvement in the flow rate, static pressure and efficiency of the fluid. In the fan market, the efficiency of fans of the same volume and specification currently reaches about 53% at most, while the fan of the present utility model increases the efficiency to more than 56%. At the same time, the flow rate increases from the original 16.5 to more than 19.8, successfully breaking through the fan level of the existing industry.

[0036] As Figures 5-7 shown, the second stationary impeller 12 further includes: an inner support cylinder 122, an outer support cylinder 123 and a support frame 124. The inner support cylinder 122 is disposed inside the outer support cylinder 123. A plurality of the second guide vanes 121 are evenly arranged between the inner support cylinder 122 and the outer support cylinder 123. The support frame 124 is disposed at the air inlet end of the inner support cylinder 122. A convex platform 125 that cooperates with the support cap 112 is provided on the support frame 124, and a first positioning protrusion 126 that cooperates with the first positioning groove 115 is provided on the side wall of the convex platform 125. The function of the second stationary impeller 12 is to further convert the dynamic pressure of the air flow into static pressure, further improve the vacuum degree of the fan, which is beneficial to the improvement of the overall performance of the fan, and at the same time plays a very beneficial role in the efficiency conversion of the air flow. The hollow structure of the support frame 124 effectively improves the heat dissipation efficiency of the fan and the efficiency during operation of the fan.

[0037] As Figure 3 、 5 shown, screw holes 6 for assembly and fixation are further provided on the support cap 112 and the support frame 124. When assembling, the first stationary impeller 11 and the second stationary impeller 12 are connected and fixed by screwing.

[0038] As Figure 1As shown in the figure, the drive assembly 2 includes a stator 21, a rotor 22, a stator base 23, and a drive control board 24. The stator base 23 is snap-connected to the second impeller 4. The stator 21 is disposed on the stator base 23. The rotor 22 passes through the stator 21. A magnet is provided on the part of the rotor 22 located inside the stator 21. The power output end of the rotor 22 passes through the fixed impeller assembly 1 and is connected to the impeller 4. The drive control board 24 is disposed on the stator base 23 and is electrically connected to the coil inside the stator 21 to provide the required working current for the coil inside the stator 21 to generate a magnetic field, driving the rotor 22 with a magnet to rotate. The rear cover 5 covers the drive control board 24 to play a protective role.

[0039] As Figure 7 , 8 shown in the figure, the inner wall of the inner support cylinder 122 is provided with a first support rib 127 that cooperates with the stator base 23, and a second positioning groove 231 that cooperates with the first support rib 127 is provided on the outside of the stator base 23. This ensures the concentricity of the assembly of the fixed impeller assembly 1 and the drive assembly 2 during the assembly process, and at the same time improves the consistency of the quality of the fan during the production process.

[0040] As Figure 8 shown in the figure, the inner side of the stator base 23 is provided with a second support rib 232 that cooperates with the stator 21, and a third positioning groove (not shown in the figure) that cooperates with the first support rib 127 is provided on the outside of the stator 21. This ensures the concentricity of the assembly of the stator 21 and the stator base 23 during the assembly process.

[0041] As Figure 8 shown in the figure, the stator base 23 is provided with a plurality of hollow parts 233. On the one hand, it reduces the weight and increases its own strength. On the other hand, it increases the channel space for the heat flow of the fan itself.

[0042] As Figure 9 shown in the figure, the impeller 4 includes a backing plate 41, an arc-shaped top plate 42, and a plurality of blades 43 disposed between the backing plate 41 and the arc-shaped top plate 42. A shaft hole is provided in the center of the backing plate 41 for connecting to the power output end of the drive assembly 2. The blades 43 are annularly arranged at the edge of the backing plate 41 with the center of the backing plate 41 as the center of the circle. An air inlet is provided in the middle of the arc-shaped top plate 42.

[0043] As Figure 2 shown in the figure, a first bearing seat for installing a bearing is provided on one side of the middle of the second fixed impeller 12 close to the drive assembly 2, and a second bearing seat for installing a bearing is provided in the middle of the stator base 23 to provide bearing support for the internal rotor 22.

[0044] The beneficial effects of the present utility model are as follows. Currently, for fans of the same volume and specifications on the market, the highest efficiency reaches about 53%, while the fan of the present utility model can increase the efficiency to more than 56%. At the same time, the flow rate has increased from the original 16.5 to the current 19.8 or more, with stronger performance, successfully breaking through the fan level of the existing industry.

Claims

1. An efficient booster fan, characterized in that, Comprising: A stationary impeller assembly (1), the stationary impeller assembly (1) includes a first stationary impeller (11) and a second stationary impeller (12), the first stationary impeller (11) is arranged at the air inlet end of the second stationary impeller (12), the first stationary impeller (11) has a first guide vane (111), the second stationary impeller (12) has a second guide vane (121), and the angle between the first guide vane (111) and the axis of the stationary impeller assembly (1) is greater than the angle between the second guide vane (121) and the axis of the stationary impeller assembly (1); A driving assembly (2), one end of the driving assembly (2) is connected to the air outlet end of the second stationary impeller (12), and the other end of the driving assembly (2) is connected to the rear cover (5); An air guide cover (3), the bottom of the air guide cover (3) is snap-connected to the side wall of the second stationary impeller (12); A moving impeller (4), the moving impeller (4) is arranged in the air guide cover (3), and the power output end of the driving assembly (2) passes through the first stationary impeller (11) and the second stationary impeller (12) to be connected to the moving impeller (4) for power transmission.

2. The high-efficiency supercharging fan according to claim 1, wherein, The first stationary impeller (11) further includes: a support cap (112) and a flow guide ring (113), the support cap (112) is arranged in the middle of the first stationary impeller (11), a plurality of the first guide vanes (111) are evenly arranged around the support cap (112), the flow guide ring (113) is arranged outside the first guide vanes (111) and connected to the first guide vanes (111), an installation hole (114) is arranged on the support cap (112), and a first positioning groove (115) is arranged on the side wall of the installation hole (114).

3. The high-efficiency supercharging fan according to claim 2, wherein The second stationary impeller (12) further includes: an inner support cylinder (122), an outer support cylinder (123) and a support frame (124), the inner support cylinder (122) is arranged inside the outer support cylinder (123), a plurality of the second guide vanes (121) are evenly arranged between the inner support cylinder (122) and the outer support cylinder (123), the support frame (124) is arranged at the air inlet end of the inner support cylinder (122), a boss (125) for cooperating with the support cap (112) is arranged on the support frame (124), and a first positioning protrusion (126) for cooperating with the first positioning groove (115) is arranged on the side wall of the boss (125).

4. The high-efficiency supercharging fan according to claim 3, wherein Screw holes (6) for assembly and fixation are further arranged on the support cap (112) and the support frame (124).

5. The high-efficiency supercharging fan according to claim 3, wherein, The driving assembly (2) includes: a stator (21), a rotor (22), a stator seat (23) and a driving control board (24), the stator seat (23) is snap-connected to the second moving impeller (4), the stator (21) is arranged on the stator seat (23), the rotor (22) passes through the stator (21), a magnet is arranged on the part of the rotor (22) inside the stator (21), the power output end of the rotor (22) passes through the stationary impeller assembly (1) to be connected to the moving impeller (4), the driving control board (24) is arranged on the stator seat (23) and electrically connected to the coil inside the stator (21), and the rear cover (5) covers the driving control board (24).

6. The high-efficiency supercharging fan according to claim 5, wherein The inner wall of the inner support cylinder body (122) is provided with a first support rib (127) for cooperating with the stator seat (23), and the outer side of the stator seat (23) is provided with a second positioning groove (231) for cooperating with the first support rib (127).

7. The high-efficiency supercharging fan according to claim 5, characterized in that The inner side of the stator seat (23) is provided with a second support rib (232) for cooperating with the stator (21), and the outer side of the stator (21) is provided with a third positioning groove for cooperating with the first support rib (127).

8. The high-efficiency supercharging fan according to claim 5, wherein A plurality of hollow parts (233) are provided on the stator seat (23).

9. The high-efficiency supercharging fan according to claim 1, wherein The impeller (4) includes: a backing plate (41), an arc-shaped top plate (42), and a plurality of blades (43) arranged between the backing plate (41) and the arc-shaped top plate (42). A shaft hole is formed in the center of the backing plate (41) for connecting to the power output end of the driving component (2). The blades (43) are arranged in a circular array with the center of the backing plate (41) as the center at the edge of the backing plate (41). An air inlet is formed in the middle of the arc-shaped top plate (42).

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