Energy-saving high-air-volume fan structure

Abstract

The utility model relates to an energy-saving high-air-volume fan structure which comprises a volute and a wind wheel, an air outlet is formed in the volute, the wind wheel is arranged in an inner cavity of the volute in a rotating mode, and an air inlet is formed in the position, corresponding to the wind wheel, of the volute. A gap between the inner wall of the volute and the wind wheel forms an air duct, the air duct is divided into a first air duct body, a second air duct body, a third air duct body, a fourth air duct body and a fifth air duct body, the first air duct body, the second air duct body, the third air duct body, the fourth air duct body and the fifth air duct body are communicated, and the first air duct body is communicated with the air outlet; the air duct is divided into the first air duct, the second air duct, the third air duct, the fourth air duct and the fifth air duct, it is ensured that the ratio of the size of each air duct to the diameter of the wind wheel is smaller than 1, airflow distribution in the air ducts is optimized, airflow is more stable and concentrated, and therefore air output is remarkably improved, and the high air volume requirement is met; the device is especially suitable for large kitchens or cooking equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of energy-saving high air volume fan structure. BACKGROUND

[0002] With the improvement of people's living standards, kitchen hood is widely used as an important household appliance, for removing oil smoke and peculiar smell generated during cooking. The traditional hood usually adopts centrifugal fan or axial fan, its structure and working principle are relatively simple, but there are some problems in actual use. One of them is that the air volume of traditional fan is limited under the same power, which cannot meet the requirements of some high air volume scenes, such as large kitchen or cooking equipment.

[0003] On the other hand, the existing hood has the problem of high energy consumption in actual use, which is mainly because more electric energy needs to be invested while providing enough air volume, which not only increases the use cost, but also does not meet the current social requirements of energy saving and environmental protection.

[0004] In order to solve these problems, the existing technology continues to improve the design of hood, including the structure and working principle of fan. However, so far, there is still a demand for improving air volume and reducing energy consumption, especially for improving performance while maintaining the effectiveness of hood, which becomes a problem to be solved in this field. SUMMARY

[0005] The utility model aims at providing a kind of energy-saving high air volume fan structure that can more effectively utilize power, improve air volume, and reduce energy consumption.

[0006] The utility model is realized as follows:

[0007] An energy-saving high air volume fan structure, comprising a scroll case and a fan wheel, the scroll case is provided with an air outlet, the fan wheel is arranged in the inner cavity of the scroll case in a rotating manner, and the scroll case is provided with an air inlet corresponding to the position of the fan wheel;

[0008] The gap between the inner wall of the scroll case and the fan wheel forms an air duct, the air duct is divided into a first air duct, a second air duct, a third air duct, a fourth air duct and a fifth air duct, the first air duct, the second air duct, the third air duct, the fourth air duct and the fifth air duct are communicated, and the first air duct communicates with the air outlet;

[0009] The ratio of the size of the first air duct to the diameter of the fan wheel is less than 1;

[0010] The ratio of the size of the second air duct to the diameter of the fan wheel is less than 1;

[0011] The ratio of the size of the third air duct to the diameter of the fan wheel is less than 1;

[0012] The ratio of the size of the fourth air duct to the diameter of the wind wheel is less than 1;

[0013] The ratio of the size of the fifth air duct to the diameter of the wind wheel is less than 1;

[0014] The ratio of the size of the air outlet to the diameter of the wind wheel is greater than 1;

[0015] The diameter of the wind wheel is 130mm.

[0016] By dividing the air duct into first, second, third, fourth and fifth air ducts, and ensuring that the ratio of the size of each air duct to the diameter of the wind wheel is less than 1, the design optimizes the airflow distribution in the air duct, making the airflow more stable and concentrated, thereby significantly improving the air volume output, meeting the high air volume demand, especially suitable for large kitchens or cooking equipment.

[0017] This design effectively reduces the flow resistance in the air duct and reduces the energy loss during the operation of the fan by precisely controlling the ratio of the size of the air duct to the diameter of the wind wheel, and reasonably designing the size of the air outlet (which is greater than the ratio of the diameter of the wind wheel). The goal of providing sufficient air volume while reducing energy consumption is achieved, meeting the requirements of energy saving and environmental protection.

[0018] The multi-stage separation design of the air duct makes the airflow path more orderly, reduces vortex and energy loss, and improves air delivery efficiency. In addition, the communication design between the air ducts enhances the continuity of airflow, making the fan run more smoothly and efficiently.

[0019] The matching ratio of the air duct design and the diameter of the wind wheel is precisely optimized, effectively improving the rotation efficiency of the wind wheel, reducing vibration and noise problems caused by turbulent airflow, thereby improving the running stability of the fan and prolonging the service life of the equipment.

[0020] By adjusting the size of the air outlet, the ratio of the diameter of the wind wheel is greater than 1, further improving the exhaust speed and effect. This improved design can quickly remove a large amount of cooking oil smoke and odors during cooking, improving the air quality of the kitchen environment.

[0021] The diameter of the wind wheel is set to 130mm, making this design suitable for various sizes of range hood equipment, meeting the regular needs of home kitchens and supporting the high-load work demands of large commercial kitchens, with a wide range of application scenarios and market prospects.

[0022] In summary, this design optimizes the structure of the air duct and wind wheel, significantly reduces energy consumption while achieving high air volume output, and improves the stability and applicability of the equipment, providing a new type of efficient and energy-saving solution for the kitchen range hood technology field.

[0023] The technical measures can also be used to solve the purposes of the utility model:

[0024] Further, the ratio of the size of the first air duct to the diameter of the wind wheel is 0.59;

[0025] The ratio of the size of the second air duct to the diameter of the wind wheel is 0.78;

[0026] The ratio of the size of the third air duct to the diameter of the wind wheel is 0.64;

[0027] The ratio of the size of the fourth air duct to the diameter of the wind wheel is 0.60;

[0028] The ratio of the size of the fifth air duct to the diameter of the wind wheel is 0.55;

[0029] The ratio of the size of the air outlet to the diameter of the wind wheel is 1.15.

[0030] The ratio of the size of each air duct to the diameter of the wind wheel is accurately set (0.59 for the first air duct, 0.78 for the second air duct, 0.64 for the third air duct, 0.60 for the fourth air duct, and 0.55 for the fifth air duct), realizing step-by-step optimized distribution of airflow in the air duct.

[0031] This differentiated design effectively reduces vortex and flow turbulence in the air duct, and the airflow path is more orderly, further improving the working efficiency of the fan.

[0032] By reasonably adjusting the ratio of the air duct size and the air outlet (the ratio of the size of the air outlet to the diameter of the wind wheel is 1.15), the effective exhaust area of the exhaust outlet is increased, thereby significantly improving the air output capacity under the same power condition, meeting the use requirements of high air volume demand scenarios.

[0033] The optimized air duct size ratio improves the airflow flow state, reduces the flow resistance in the air duct, and reduces energy loss.

[0034] In particular, the ratio of the size of the fifth air duct to the diameter of the wind wheel is 0.55, which is more compact in design, helps to compress the airflow energy consumption at the end, and thus realizes lower energy consumption in the overall system.

[0035] The sizes of the first air duct and the fifth air duct are 0.59 and 0.55 times the diameter of the wind wheel, respectively, and this gradually reduced air duct design forms a clear air compression effect, so that the airflow is further accelerated before being discharged, improving the speed and effect of air discharge.

[0036] The sizes of the second air duct and the third air duct are 0.78 and 0.64, respectively, which ensures the matching of the flow carrying capacity of the middle air duct and the wind wheel, and balances the compression and smoothness of the airflow.

[0037] The ratio of the outlet size to the impeller diameter is 1.15. By increasing the size of the outlet, the exhaust speed is improved, so that a large amount of cooking oil fume and odor can be quickly removed, significantly improving the air quality of the kitchen environment.

[0038] The refined size ratio of the air duct reduces the turbulence of the airflow, thereby reducing the vibration and noise during the operation of the fan. The fan operates more smoothly and quietly, further improving the user experience.

[0039] The impeller diameter is 130mm, combined with the above optimization design, so that the scheme can adapt to the diversified needs of family kitchens and commercial kitchens, and has significant market competitiveness with high efficiency and low energy consumption.

[0040] In summary, this optimization design further improves the performance of the fan by precisely controlling the size ratio of the air duct and the outlet, achieving high air volume, low energy consumption, and high-efficiency smoke exhaust, providing a more efficient, energy-saving, and environmentally friendly technical solution for the kitchen range hood field.

[0041] Further, the area between the right side top inner wall of the volute and the rotation center of the impeller forms a first air duct and a second air duct;

[0042] The area between the left side inner wall of the volute and the rotation center of the impeller forms a third air duct;

[0043] The area between the bottom inner wall of the volute and the rotation center of the impeller forms a fourth air duct;

[0044] The area between the right side inner wall of the volute and the rotation center of the impeller forms a fifth air duct;

[0045] The right side of the volute is provided with the outlet, and the outlet is in communication with the first air duct.

[0046] The first air duct and the second air duct are formed through the area between the right side top inner wall of the volute and the rotation center of the impeller, which optimizes the airflow path at the inlet end, so that the airflow is guided in layers from the initial stage of entering the fan, effectively reducing turbulence.

[0047] The design of the fifth air duct in the right side inner wall area of the volute communicates with the outlet, so that the airflow is efficiently discharged from the fan, greatly improving the discharge efficiency, especially in handling large air volume demand scenarios.

[0048] The third air duct formed by the left side inner wall area and the fourth air duct formed by the bottom inner wall area jointly bear the airflow conveying task of the middle and bottom of the impeller.

[0049] This distributed air duct design makes the airflow load in the scroll more uniform, effectively avoiding the problem of overloading in a single area, while improving the airflow circulation efficiency and the stability of the fan operation.

[0050] The first air duct and the second air duct directly communicate with the air outlet, forming a smooth exhaust path, allowing the airflow to be quickly exhausted, reducing energy loss in the scroll.

[0051] The structure of the third air duct, the fourth air duct, and the fifth air duct cooperates to make the air inhaled from all directions quickly gather and exhaust after being accelerated by the fan, providing higher air volume output for the whole machine.

[0052] The reasonable division of the segmented air duct design (first air duct to fifth air duct) reduces the internal airflow conflict during fan operation, further reducing energy consumption.

[0053] The design of the straight-through air outlet on the right side of the scroll reduces the turning resistance of the exhaust path and reduces the noise generated by airflow turbulence during operation, providing a more quiet user experience.

[0054] The area between the scroll and the center of the fan rotation makes full use of the internal space, not only maintaining the compactness of the fan structure, but also improving its overall operating efficiency.

[0055] The design of the air outlet on the right side of the scroll makes the equipment installation more flexible, suitable for various space layout requirements, further improving the practicality of the product.

[0056] The air outlet directly communicates with the first air duct, and the airflow is quickly exhausted from the right side, greatly improving the exhaust efficiency. The oil produced during cooking can be quickly removed, significantly improving the air quality of the kitchen environment, meeting the needs of efficient exhaust.

[0057] The area division of each air duct is based on the relative position of the scroll and the center of the fan rotation, which not only enhances the stability of the fan operation, but also prolongs the service life of the equipment.

[0058] The optimized design of the scroll structure reduces wear and tear caused by airflow turbulence during long-term use, further improving the reliability of the equipment.

[0059] This optimized design accurately divides the area between the inner wall of the scroll and the center of the fan rotation, forming multiple air ducts and a straight-through air outlet, which not only significantly improves air volume output and exhaust efficiency, but also effectively reduces energy consumption and noise, providing an efficient, energy-saving, and environmentally friendly technical solution to meet the diverse needs of household kitchens and commercial kitchens.

[0060] Further, the motor is also included, the wind wheel is provided with a motor mounting cavity, a shaft hole for connecting the rotating shaft of the motor is opened at the top of the motor mounting cavity, the volute is provided with a motor mounting area, the motor is fixed in the motor mounting area, and the motor enters the motor mounting cavity, the rotating shaft of the motor passes through and is connected to the shaft hole, and the motor drives the wind wheel to rotate.

[0061] The motor mounting cavity is designed in an integrated manner with the wind wheel, the motor can be embedded in the motor mounting cavity and the shaft hole provided on the wind wheel, the overall volume of the fan is greatly reduced, the space occupation of the equipment is saved, and the demand of a modern kitchen for compact electrical appliances is met.

[0062] The volute is provided with a special motor mounting area, the motor is stably mounted and forms an integral whole with the volute, and the compactness and space utilization efficiency of the fan structure are further improved.

[0063] The rotating shaft of the motor directly passes through the shaft hole and is connected to the wind wheel, the complex intermediate transmission mechanism is cancelled, the loss in the energy transmission process is reduced, the transmission efficiency is improved, so that the motor power can be more efficiently converted into the rotating power of the wind wheel.

[0064] The motor is fixed in the mounting area of the volute and embedded in the mounting cavity of the wind wheel, so that the motor and the wind wheel are coaxially aligned, the deviation and vibration problems in operation are reduced, the stable operation of the fan is ensured, and the service life of the equipment is prolonged.

[0065] Due to the direct and efficient transmission path, the direct connection of the motor and the wind wheel reduces energy waste, so that the required power is lower under the condition of the same air output, the energy consumption of the fan is further reduced, and the energy-saving and environmental protection requirements are met.

[0066] The design that the shaft hole is opened at the top of the motor mounting cavity enables the motor to be quickly assembled and disassembled, when the equipment needs to be maintained or the motor needs to be replaced, the operation is more convenient and fast, and the maintenance cost of the user is reduced.

[0067] The design that the motor directly drives the wind wheel simplifies the transmission system, reduces the noise that may be generated by the traditional belt or gear transmission, and the embedded motor also plays a certain sound insulation role, so that the fan runs more quietly and the user experience is improved.

[0068] The motor is embedded in the mounting cavity, the possibility of exposed motor parts is reduced, the risk of accidental damage and accidental touch of the user is reduced, and the safety performance of the equipment is further improved.

[0069] The compact integrated design of the motor and the wind wheel is not only suitable for household kitchens, but also suitable for commercial kitchens, industrial exhaust equipment and other scenes that require high air output, and has a wide application prospect.

[0070] The design realizes the direct connection of the motor and the wind wheel by integrating the motor installation cavity on the wind wheel and cooperating with the volute to form a fixed installation area, optimizes the compactness, running efficiency and stability of the fan, and reduces energy consumption and noise, providing a more efficient and practical solution for energy-saving high-air-volume fans.

[0071] Further, a plurality of air guide ribs are arranged at the air outlet, the air guide ribs are arranged along the airflow direction, the cross section of the air guide rib is streamline or trapezoidal, and the spacing between the air guide ribs is 20-30mm.

[0072] The air guide ribs are arranged along the airflow direction, so that the airflow is controlled and the direction is more concentrated when passing through the air outlet, reducing airflow turbulence, optimizing airflow organization, and significantly improving exhaust efficiency, especially suitable for high-air-volume demand scenarios.

[0073] The streamline or trapezoidal cross section design effectively reduces friction and resistance when the airflow passes through the rib surface, thereby reducing energy loss, improving the energy efficiency of the fan, and achieving energy-saving effect.

[0074] The reasonable spacing (20-30mm) of the air guide ribs can effectively prevent the formation of vortex or backflow phenomenon of the airflow at the air outlet, ensuring the smooth discharge of the airflow and further improving the working performance of the fan.

[0075] The smooth discharge of the airflow reduces turbulence and impact phenomenon, thereby reducing the noise of the fan during operation, providing a quieter user experience, and is particularly suitable for kitchen scenarios that require a quiet environment.

[0076] By optimizing the air flow direction of the air outlet, the power required by the motor can be more efficiently converted into air volume output, thereby reducing the overall energy consumption and meeting the requirements of energy saving and environmental protection.

[0077] The design is suitable for different scenarios such as household kitchens, commercial kitchens, and industrial exhaust equipment, and with its efficient, energy-saving and low-noise characteristics, it improves the market competitiveness and user recognition of the product.

[0078] By setting the air guide ribs and reasonably designing their shape and spacing, not only the airflow discharge path of the fan is optimized, the exhaust efficiency is improved, the energy consumption and noise are reduced, but also the application range of the equipment is further expanded, providing strong support for the market application of energy-saving high-air-volume fans.

[0079] Further, the air guide ribs are fixed to the inner wall of the volute through embedded clamping slots, or are integrally injection molded with the volute.

[0080] The embedded card slot fixing method ensures the firm connection of the air guide ribs with the inner wall of the volute, avoids the loosening or falling off of the ribs due to vibration or long-term use during operation, and improves the overall structural stability and service life of the fan.

[0081] The integral injection molding integrates the air guide ribs with the volute, without the need for later installation, further improving the reliability of the structure.

[0082] The integral injection molding design avoids the separate processing and assembly steps of the air guide ribs, significantly simplifies the production process, improves production efficiency, and reduces manufacturing costs, especially suitable for mass production.

[0083] The embedded card slot design provides flexibility, allowing quick installation of the ribs during production without the need for additional complex tools, saving assembly time and labor costs.

[0084] The embedded card slot fixing method ensures the stability of the ribs while providing convenience for later maintenance or replacement, allowing users to quickly disassemble and install new ribs, reducing maintenance difficulty and cost.

[0085] Whether it is a card slot fixation or integral injection molding, the ribs can tightly adhere to the inner wall of the volute, maintaining the flatness of the volute surface and avoiding airflow turbulence at the air guide ribs, further optimizing airflow flow and improving fan performance.

[0086] The integral injection molding design integrates the air guide ribs with the volute to form a streamlined appearance, providing better visual effects and improving the product's aesthetic appeal and market appeal.

[0087] This design balances production efficiency, maintenance convenience, and performance optimization, and can adapt to the diverse needs of home, commercial, and industrial scenarios, providing more efficient and reliable fan solutions for different users.

[0088] Through stable structural design and efficient air guiding effect, energy consumption is reduced, achieving the goal of energy saving and environmental protection, in line with the development direction of modern green and energy-saving home appliances.

[0089] The design of embedded card slot fixation or integral injection molding air guide ribs not only enhances the structural stability and production efficiency of the fan, but also further optimizes the airflow guiding performance, reduces maintenance costs, and improves the overall competitiveness of the product, providing reliable technical support for efficient and energy-saving fans.

[0090] The beneficial effects of the utility model are as follows:

[0091] The utility model discloses, the vortex shell is divided into the design of first air duct, second air duct, third air duct, fourth air duct and fifth air duct, make the path that the airflow passes through more orderly, effectively reduce the turbulence phenomenon, promote the exhaust efficiency, especially suitable for high air volume demand scene.

[0092] The utility model discloses, set up the wind guide rib at the air outlet, and the wind guide rib is along the airflow direction arrangement, and the cross section design is streamline or trapezoidal, can optimize the airflow guide, reduce the resistance, reduce the energy consumption, improve the fan work efficiency simultaneously, realize the energy -conserving environmental protection goal.

[0093] The utility model discloses, the optimization design of air duct and air outlet reduces the impact and turbulence effect of airflow in the vortex shell inner wall, and the wind guide rib of reasonable spacing is matched, effectively reduced the noise when fan operation, provides more quiet use experience for the user.

[0094] The utility model discloses, the wind guide rib is fixed through the embedded type clamping groove or with the vortex shell integral injection molding, has guaranteed its firmness, has provided convenient dismouting maintenance mode simultaneously, reduced the later maintenance cost, improved use convenient.

[0095] The utility model discloses, adopt 130mm diameter's wind wheel and optimized air duct size ratio (such as first air duct size and wind wheel diameter ratio 0.59, the air outlet size and wind wheel diameter ratio 1.15), make the fan can have the characteristics of high -efficient exhaust and compact structure, adapt the diversification demand of family kitchen, commercial kitchen and industrial scene.

[0096] The utility model discloses, through reasonable motor installation cavity design and vortex shell set up motor installation area, motor is fixed firm and is closely connected with wind wheel axle hole, has guaranteed the stable rotation of wind wheel, reduced the energy loss, prolonged the motor life, improved the whole reliability of equipment simultaneously.

[0097] The utility model discloses, through optimizing airflow path and wind guide structure, while satisfying high air volume demand, energy consumption is reduced significantly. ACCURACY

[0098] Figure 1 It is the schematic diagram of energy -conserving formula high air volume fan structure.

[0099] Figure 2 It is the schematic diagram of energy -conserving formula high air volume fan structure (except part vortex shell).

[0100] Figure 3 It is the schematic diagram of energy -conserving formula high air volume fan structure (except part vortex shell).

[0101] Figure 4 It is the schematic diagram of energy -conserving formula high air volume fan structure (the air outlet is in the open state).

[0102] Figure 5 Assembling view of the energy-saving high-air-volume fan structure.

[0103] Figure 6 Assembling view of the energy-saving high-air-volume fan structure from another angle. DETAILED DESCRIPTION

[0104] The utility model will be further described in connection with the drawings and embodiments:

[0105] Embodiment, combine Figures 1 to 6 As shown in the figure, an energy-saving high-air-volume fan structure comprises a scroll casing 6 and a fan wheel 7, the scroll casing 6 is provided with an air outlet 61, the fan wheel 7 is rotatably arranged in the inner cavity of the scroll casing 6, and the scroll casing 6 is provided with an air inlet 62 corresponding to the position of the fan wheel 7;

[0106] The gap between the inner wall of the scroll casing 6 and the fan wheel 7 forms an air duct, the air duct is divided into a first air duct 1, a second air duct 2, a third air duct 3, a fourth air duct 4 and a fifth air duct 5, the first air duct 1, the second air duct 2, the third air duct 3, the fourth air duct 4 and the fifth air duct 5 are communicated, and the first air duct 1 is communicated with the air outlet 61;

[0107] The ratio of the size of the first air duct 1 to the diameter of the fan wheel 7 is less than 1;

[0108] The ratio of the size of the second air duct 2 to the diameter of the fan wheel 7 is less than 1;

[0109] The ratio of the size of the third air duct 3 to the diameter of the fan wheel 7 is less than 1;

[0110] The ratio of the size of the fourth air duct 4 to the diameter of the fan wheel 7 is less than 1;

[0111] The ratio of the size of the fifth air duct 5 to the diameter of the fan wheel 7 is less than 1;

[0112] The ratio of the size of the air outlet 61 to the diameter of the fan wheel 7 is greater than 1;

[0113] The diameter of the fan wheel 7 is 130mm.

[0114] Further, the ratio of the size of the first air duct 1 to the diameter of the fan wheel 7 is 0.59;

[0115] The ratio of the size of the second air duct 2 to the diameter of the fan wheel 7 is 0.78;

[0116] The ratio of the size of the third air duct 3 to the diameter of the fan wheel 7 is 0.64;

[0117] The ratio of the size of the fourth air duct 4 to the diameter of the fan wheel 7 is 0.60;

[0118] The ratio of the size of the fifth air duct 5 to the diameter of the wind wheel 7 is 0.55;

[0119] The ratio of the size of the air outlet 61 to the diameter of the wind wheel 7 is 1.15.

[0120] Further, the area between the right top inner wall of the volute 6 and the rotation center of the wind wheel 7 forms the first air duct 1 and the second air duct 2;

[0121] The area between the left inner wall of the volute 6 and the rotation center of the wind wheel 7 forms the third air duct 3;

[0122] The area between the bottom inner wall of the volute 6 and the rotation center of the wind wheel 7 forms the fourth air duct 4;

[0123] The area between the right inner wall of the volute 6 and the rotation center of the wind wheel 7 forms the fifth air duct 5;

[0124] The right side of the volute 6 is provided with the air outlet 61, and the air outlet 61 is communicated with the first air duct 1.

[0125] Further, the motor is further included, the wind wheel 7 is provided with a motor mounting cavity 71, the top of the motor mounting cavity 71 is provided with a shaft hole 75 for connecting the rotating shaft of the motor, the volute 6 is provided with a motor mounting area 81, the motor is fixed in the motor mounting area 81, and the motor enters the motor mounting cavity 71, the rotating shaft of the motor passes through and is connected with the shaft hole 75, and the motor drives the wind wheel 7 to rotate.

[0126] Further, a plurality of air guide ribs are arranged at the air outlet 61, the air guide ribs are arranged along the air flow direction, the cross section of the air guide rib is streamlined or trapezoidal, and the spacing between the air guide ribs is 20-30 mm.

[0127] Further, the air guide rib is fixed to the inner wall of the volute 6 through an embedded clamping groove, or is integrally injection molded with the volute 6.

[0128] According to the following table (test results of the energy-saving high-air-volume fan structure), when the product reaches the maximum air volume, the fluid power efficiency of the utility model is higher, and the energy consumption efficiency is lower.

[0129]

Claims

1. An energy-saving high-airflow fan structure, comprising a volute (6) and a rotor (7), characterized in that: The vortex shell (6) has an air outlet (61), the impeller (7) is rotatably disposed in the inner cavity of the vortex shell (6), and the vortex shell (6) has an air inlet (62) corresponding to the position of the impeller (7). The gap between the inner wall of the vortex shell (6) and the impeller (7) forms an air duct, which is divided into a first air duct (1), a second air duct (2), a third air duct (3), a fourth air duct (4) and a fifth air duct (5). The first air duct (1), the second air duct (2), the third air duct (3), the fourth air duct (4) and the fifth air duct (5) are connected. The first air duct (1) is connected to the air outlet (61). The ratio of the size of the first air duct (1) to the diameter of the wind turbine (7) is less than 1; The ratio of the size of the second air duct (2) to the diameter of the impeller (7) is less than 1; The ratio of the size of the third air duct (3) to the diameter of the wind turbine (7) is less than 1; The ratio of the size of the fourth air duct (4) to the diameter of the wind turbine (7) is less than 1; The ratio of the size of the fifth air duct (5) to the diameter of the wind turbine (7) is less than 1; The ratio of the size of the air outlet (61) to the diameter of the impeller (7) is greater than 1; The diameter of the wind turbine (7) is 130 mm.

2. The energy-saving high-airflow fan structure according to claim 1, characterized in that: The ratio of the size of the first air duct (1) to the diameter of the impeller (7) is 0.59; The ratio of the size of the second air duct (2) to the diameter of the impeller (7) is 0.78; The ratio of the size of the third air duct (3) to the diameter of the impeller (7) is 0.64; The ratio of the size of the fourth air duct (4) to the diameter of the wind turbine (7) is 0.60; The ratio of the size of the fifth air duct (5) to the diameter of the wind turbine (7) is 0.55; The ratio of the size of the air outlet (61) to the diameter of the impeller (7) is 1.

15.

3. The energy-saving high-airflow fan structure according to claim 1, characterized in that: The area between the right top inner wall of the vortex shell (6) and the rotation center of the wind turbine (7) forms the first air duct (1) and the second air duct (2). The area between the left inner wall of the vortex shell (6) and the rotation center of the wind turbine (7) forms a third air duct (3). The area between the bottom inner wall of the vortex shell (6) and the rotation center of the wind turbine (7) forms a fourth air duct (4). The area between the right inner wall of the vortex shell (6) and the rotation center of the wind turbine (7) forms the fifth air duct (5). The air outlet (61) is located on the right side of the vortex shell (6), and the air outlet (61) is connected to the first air duct (1).

4. The energy-saving high-airflow fan structure according to claim 1, characterized in that: It also includes a motor. The impeller (7) is provided with a motor mounting cavity (71). The top of the motor mounting cavity (71) has a shaft hole (75) for connecting the motor shaft. The volute (6) is provided with a motor mounting area (81). The motor is fixed in the motor mounting area (81). At the same time, the motor enters the motor mounting cavity (71). The motor shaft passes through and connects to the shaft hole (75). The motor drives the impeller (7) to rotate.

5. The energy-saving high-airflow fan structure according to claim 1, characterized in that: A number of air guide ribs are provided at the air outlet (61). The air guide ribs are arranged along the airflow direction. The cross-section of the air guide ribs is streamlined or trapezoidal. The spacing between the air guide ribs is 20-30mm.

6. The energy-saving high-airflow fan structure according to claim 5, characterized in that: The air guide ribs are fixed to the inner wall of the vortex shell (6) by embedded slots, or are integrally injection molded with the vortex shell (6).

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