Centrifugal fan capable of adjusting air volume

Abstract

According to the centrifugal fan capable of adjusting the air output amount, dust contained in air sucked by a fan body is adsorbed and cleaned through an air control assembly, air penetrates through a mounting sleeve and is driven to enter a fan pipeline in a spiral air direction under rotation of a spiral column, and under the effect of the spiral air direction, the air output amount of the fan is adjusted. Air is attached to the inner wall of the fan pipeline to make slow movement, the air passes through the hemispherical groove, dust and particles in the air are adsorbed to the surface of the dust removal bag, the adjusting plate is transversely pushed under the wind resistance effect, the connecting piece is stressed, the dust removal bag is pulled, and therefore the dust removal bag protrudes out of the hemispherical groove; and atomized water sprayed by the water storage tank moves to the inner wall of the fan pipeline along with the spiral wind direction to clean dust and particles on the surface of the dust removal bag, so that dust, pollutants, bacteria and viruses in the air can be more effectively removed, and cleaner air is provided.

Description

Technical Field

[0001] The present invention relates to the field of centrifugal fans, and more particularly to a centrifugal fan capable of adjusting air output. Background Art

[0002] Centrifugal fans are a common type of air handling equipment, commonly used in industrial and commercial applications. They draw air in from a central inlet through centrifugal force, then rotate it at high speed inside and release it at the outlet. This design enables centrifugal fans to produce high-pressure air flows, which are commonly used in applications such as exhaust, ventilation, air conditioning and air filtration. Centrifugal fans consist of several basic components, including a casing, an impeller, a motor and a drive. The casing is usually cylindrical or rectangular and is used to accommodate the impeller and motor and to guide the incoming and outgoing air flows. The impeller is a key component of a centrifugal fan and is usually composed of a series of blades. The shape and arrangement of these blades determine the performance of the fan. The motor provides power to drive the impeller to rotate and generate airflow.

[0003] The working principle of the centrifugal fan is based on the action of centrifugal force. When the impeller rotates, the air is forced to move outward, thus generating centrifugal force, which increases the air flow rate and generates pressure. As the air is sucked in from the inlet and rotates through the impeller, the pressure gradually increases and is finally released at the outlet to form the required air volume and pressure.

[0004] In the existing air supply system, the centrifugal fan is used to inhale air from the outside and deliver it into the room. This method can increase the fresh air supply in the room and is often used in places that require a continuous supply of fresh air, such as offices, commercial buildings, factories and residences. The supplied air is usually filtered and the temperature is adjusted (such as heating or cooling) to ensure the comfort of the indoor environment. Although the inhaled air is filtered for air supply, some dust and particles will still enter the room with the supplied wind, thereby affecting the quality of the indoor environment and reducing the comfort of the indoor environment.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a centrifugal fan with adjustable air volume. Summary of the invention

[0006] The object of the present invention is to provide a centrifugal fan capable of adjusting the air volume to solve the above-mentioned problem.

[0007] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0008] A centrifugal fan with adjustable air output comprises a fan body and a plurality of wind control components, wherein the front end of the fan body is fixedly connected to an air inlet, the end of the fan body away from the air inlet is fixedly connected to a driving motor, the upper end of the fan body is fixedly connected to a fan duct, the upper end of the fan duct is fixedly connected to a filter screen, the upper inner wall is fixedly connected to an electromagnetic ring, a plurality of the wind control components are fixedly installed on the inner wall of the fan duct, the wind control components comprise a hemispherical groove, a plurality of the hemispherical grooves are opened on the inner wall of the fan duct, a dust removal bag is fixedly connected to the inner wall of the hemispherical groove, the fan body is driven by the driving motor to suck air from the air inlet, and the air is discharged into the fan duct from the air outlet of the fan body, and the dust and particles contained in the passing air are adsorbed by the dust removal bag.

[0009] As a further improvement of the present invention, the wind control component also includes a connecting piece, which is fixedly connected to the end of the dust bag away from the inner wall of the hemispherical groove. The end of the connecting piece away from the dust bag is rotatably connected to an adjustment plate, and the wind resistance of the adjustment plate is utilized to cause the connecting piece to pull the dust bag, thereby causing the dust bag to bulge.

[0010] As a further improvement of the present invention, the wind control component also includes a magnetic block, which is fixedly connected to the lower end of the adjustment plate, and the electromagnetic ring and the hemispherical groove are staggered. The electromagnetic ring is used to attract the magnetic block, so that the rotation of the adjustment plate changes from vertical to longitudinal, thereby increasing the wind resistance.

[0011] As a further improvement of the present invention, a mounting sleeve is fixedly connected to the inner wall of the air outlet of the fan body, and a spiral column is rotatably connected to the inner end of the mounting sleeve. The wind passes through the mounting sleeve and is blown into the fan duct in a spiral direction under the rotation of the spiral column.

[0012] As a further improvement of the present invention, a water tank is fixedly connected to the inner wall of the fan duct close to the fan body, and a plurality of spray heads are fixedly connected to the end of the water tank away from the fan duct. The water provided by the water tank is atomized and sprayed by the spray heads and enters the fan duct driven by the spiral wind direction.

[0013] As a further improvement of the present invention, an annular baffle is fixedly connected to the inner end of the fan pipe, and the annular baffle is located at the upper end of the water tank. A drainage hole is opened at the outer end of the fan pipe, and the annular baffle is used to receive and block the seeping water and then discharge it from the drainage hole.

[0014] As a further improvement of the present invention, a recovery box is fixedly connected to the outer end of the fan duct, and the recovery box is connected to the drainage hole, and the recovery box is used to centrally recover and process the water discharged from the drainage hole.

[0015] As a further improvement of the present invention, an inflatable bag is fixedly connected to the inner end of the fan body, and the inflatable bag is made of wear-resistant material. A shaping support frame is provided inside the inflatable bag. The size of the internal space of the fan body can be changed by inflating or exhausting the inflatable bag to control the wind force. At the same time, the shaping support frame can keep the inflatable bag in a certain full state when it is not inflated.

[0016] As a further improvement of the present invention, a water supply tank is fixedly connected to the lower end of the driving motor, and the water supply tank is connected to the water storage tank through a pipeline. The water supply tank is used not only to support the driving motor, but also to provide water for the water storage tank.

[0017] As a further improvement of the present invention, the dust bag is made of a mixture of elastic and dust absorbing materials. The elastic material can make the dust bag tough so that it can be pulled and rebound to reset, while the dust absorbing material can absorb dust and particles in the air.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] This solution uses the wind control component to absorb and clean the dust contained in the air sucked in by the fan body. The air passes through the installation sleeve and is driven into the fan duct in a spiral wind direction under the rotation of the spiral column. Under the action of the spiral wind direction, the air is slowly moved along the inner wall of the fan duct. In this way, the air passes through the hemispherical groove, so that the dust and particles in the air are adsorbed on the surface of the dust collection bag. In addition, under the action of multiple hemispherical grooves, the wind movement path is increased, so that the dust in the air can be fully adsorbed by the dust collection bag. When cleaning the dust and particles accumulated on the surface of the dust collection bag, the wind force of the centrifugal fan is increased. The electromagnetic ring is used to attract the magnetic block to change the adjustment plate from vertical to horizontal. The adjustment plate is pushed horizontally under the action of wind resistance so that the connector is forced to pull the dust bag, so that the dust bag protrudes to the outside of the hemispherical groove. The water tank is used to spray atomized water with spiral wind direction to the inner wall of the fan pipe to clean the dust and particles on the surface of the dust bag. This can more effectively remove dust, pollutants, bacteria and viruses in the air, thereby providing cleaner air, and can reduce the accumulation of dirt inside the system, thereby reducing the frequency of maintenance and cleaning, and increasing the service life of the centrifugal fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0023] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0024] Figure 5 It is a schematic diagram of the spiral column structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure change of the wind control component of the present invention.

[0026] Description of the numbers in the figure:

[0027] 1. Fan body; 2. Air inlet; 3. Drive motor; 4. Fan duct; 5. Filter; 6. Wind control component; 61. Hemispherical groove; 62. Dust bag; 63. Connector; 64. Adjustment plate; 65. Magnetic block; 7. Installation sleeve; 8. Spiral column; 9. Water storage tank; 10. Sprinkler head; 11. Annular baffle; 12. Drain hole; 13. Recovery box; 14. Inflatable bag; 15. Water supply tank; 16. Electromagnetic ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0029] The first implementation method:

[0030] See also Figure 1-6 , a centrifugal fan capable of adjusting the air volume, comprising a fan body 1 and a plurality of wind control components 6, the front end of the fan body 1 is fixedly connected to an air inlet 2, the end of the fan body 1 away from the air inlet 2 is fixedly connected to a drive motor 3, the upper end of the fan body 1 is fixedly connected to a fan duct 4 electromagnetic ring, the upper end of the fan duct 4 is fixedly connected to a filter 5, the filter 5 is a mechanical filter that uses physical barriers such as meshes, fiber mats or filter paper to capture and remove particles in the air. This is the most common type of filtration, suitable for removing larger particles; high-efficiency particulate air filters, activated carbon filters, and electrostatic filters can also be used, which involves the use of water, so mechanical filtration is preferred; high-efficiency particulate air filters can remove 99.97% of particles of 0.3 microns and above, and HEPA filters are very suitable for environments that require very clean air, such as hospitals and high-tech manufacturing facilities; activated carbon filters use the adsorption of activated carbon to remove gas and odor pollutants in the air. This filter is often used to treat chemical gases, smoke and odors; electrostatic filters use electrostatic force to attract and capture tiny particles. This filter is particularly effective at capturing smoke, pollen and fine dust particles.

[0031] See also Figure 3 , multiple wind control components 6 are fixedly installed on the inner wall of the fan duct 4, the wind control component 6 includes a hemispherical groove 61, multiple hemispherical grooves 61 are opened on the inner wall of the fan duct 4, the inner wall of the hemispherical groove 61 is fixedly connected with a dust bag 62, the wind control component 6 also includes a connecting piece 63, the connecting piece 63 is fixedly connected to the end of the dust bag 62 away from the inner wall of the hemispherical groove 61, the end of the connecting piece 63 away from the dust bag 62 is rotatably connected to the adjustment plate 64, the wind control component 6 also includes a magnetic suction block 65, the magnetic suction block 65 is fixedly connected to the adjustment plate 6 4, and the electromagnetic ring 16 and the hemispherical groove 61 are staggeredly distributed, and the dust and particles contained in the air entering the fan duct 4 are adsorbed by the dust bag 62. After the electromagnetic ring 16 is connected to an external power source and magnetized, the magnetic block 65 is attracted to make the adjustment plate 64 rotate from the horizontal direction to the vertical direction, thereby increasing the wind resistance. Under the strong wind, the magnetic block 65 pulls the dust bag 62 to protrude out of the hemispherical groove 61, and then the dust and particles adsorbed on the outer end surface of the dust bag 62 can be cleaned by increasing the air output.

[0032] The dust bag 62 is made of a mixture of elastic and dust-absorbing materials, and can be made of an elastic polymer-based composite material, which is composed of an elastic matrix such as rubber or a flexible polymer and an added dust-absorbing filler such as activated carbon or a specific fiber; elastic textiles with dust-absorbing function are usually made by mixing dust-absorbing fibers with elastic fibers such as spandex; elastic foam composite materials are made by embedding dust-absorbing particles such as microfibers into elastic foam; elastic sponges are combined with microfibers, and this type of material combines the soft elasticity of sponges with the efficient dust-absorbing ability of microfibers. Therefore, when the dust bag 62 is pulled out of the hemispherical groove 61 and the exhaust volume is small, it can automatically reset to the hemispherical groove 61 under its elastic action.

[0033] See also Figure 4 The inner wall of the air outlet of the fan body 1 is fixedly connected with a mounting sleeve 7, and the inner end of the mounting sleeve 7 is rotatably connected with a spiral column 8. The wind is pushed to the mounting sleeve 7 through the fan body 1, and under the rotation of the spiral column 8, the wind is discharged into the fan duct 4 in a spiral shape, so that the spiral wind moves slowly along the inner wall of the fan duct 4. Due to the effect of the spiral, the air can fully contact the hemispherical groove 61, so that the dust and particles can be completely adsorbed by the dust removal bag 62.

[0034] A water tank 9 is fixedly connected to the inner wall of the fan duct 4 on one side close to the fan body 1, and a plurality of spray heads 10 are fixedly connected to the end of the water tank 9 away from the fan duct 4. The water discharged from the water tank 9 is atomized by the spray heads 10 and then enters the fan duct 4 driven by spiral wind. When wind passes through the water mist, air flow is formed around the water droplets, which can further promote the carrying and dispersion of the water droplets, so that there is sufficient moisture in the wind, thereby facilitating the cleaning of the dust bag 62.

[0035] See also Figure 1 and Figure 4 A water supply tank 15 is fixedly connected to the lower end of the driving motor 3, and the water supply tank 15 is connected to the water storage tank 9 through a pipeline. The water supply tank 15 provides water for the water storage tank 9 and can support the driving motor 3 at the same time. Under the action of the gravity of water, the water supply tank 15 is more stable, so that the driving motor 3 is more stable during operation, and therefore the operation of the fan body 1 will also be stable.

[0036] An annular baffle 11 is fixedly connected to the inner end of the fan pipe 4, and the annular baffle 11 is located at the upper end of the water storage tank 9. A drainage hole 12 is opened at the outer end of the fan pipe 4. A recovery box 13 is fixedly connected to the outer end of the fan pipe 4, and the recovery box 13 is communicated with the drainage hole 12. The water seeping along the inner wall of the fan pipe 4 is blocked by the annular baffle 11, and flows from the drainage hole 12 to the recovery box 13 for recovery and treatment.

[0037] See also Figure 2 An inflatable bag 14 is fixedly connected to the inner end of the fan body 1, and a shaping support frame is arranged inside the inflatable bag 14. The inner diameter of the fan body 1 is changed by inflating and exhausting the inflatable bag 14. In theory, a larger rotation radius can be obtained in a larger space, which will increase the centrifugal force, thereby making the wind force and air volume larger, so as to control the wind volume. At the same time, the power of the driving motor 3 can also be controlled to control the wind volume and wind force. At the same time, the shaping support frame can keep the inflatable bag in a certain full state when it is not inflated, so that the inflatable bag will not be blown by the wind to generate vibration noise due to being too deflated when it is not inflated.

[0038] The inflatable bag 14 is made of wear-resistant material, which can be polyurethane-coated nylon, polyvinyl chloride, polyester-coated polyvinyl chloride, ethylene-vinyl acetate copolymer, and Teflon-coated fabric; nylon has high wear resistance and tear resistance, while the polyurethane coating provides additional waterproof and chemical resistance. This combination makes the material not only strong but also resistant to a variety of environmental factors; polyvinyl chloride is a cost-effective material with good water resistance, chemical resistance and wear resistance, and it can enhance its flexibility and cold resistance by adding plasticizers; polyester-coated polyvinyl chloride combines the high strength of polyester with the environmental resistance of PVC, providing additional wear resistance and durability; ethylene-vinyl acetate copolymer is a lightweight, soft and well-cushioned material that is also waterproof and chemically stable; Teflon-coated fabric coating has excellent temperature resistance, chemical resistance and extremely low friction coefficient, which makes it very suitable for use in extreme environmental conditions.

[0039] Working principle:

[0040] The driving motor 3 is started to allow air to enter the fan body 1 from the air inlet 2, and then the wind enters the fan duct 4 in a spiral shape through the installation sleeve 7 under the drive of the spiral column 8. Under the action of the spiral, the air moves close to the inner wall of the fan duct 4, so that the dust and particles contained in the air are adsorbed on the outer surface of the dust removal bag 62. Here, since the magnetic suction block 65 is heavier, the adjustment plate 64 is always kept vertically, and the wind force is normal. When the dust removal bag 62 accumulates a lot of dust and needs to be cleaned, the wind force of the fan body 1 is increased, and the frequency of the controller is controlled to allow more or less air to enter the fan duct 4, and water mist is sprayed at the same time, so that water and wind enter the fan together. Pipe 4, and the electromagnetic ring 16 is used to attract the magnetic block 65, so that the adjustment plate 64 rotates from vertical to horizontal. Here, the rotation of the adjustment plate 64 is blocked by the limit block at its connection, and it can only rotate 90° horizontally, thereby increasing the wind resistance. Under the action of the resistance, the connecting member 63 pulls the connecting member 63 to protrude from the hemispherical groove 61, and then the dust on the surface of the dust removal bag 62 is cleaned by the water mist accompanied by the wind. At the same time, when the wind frequency and air volume are controlled, under the elastic force of the dust removal bag 62 itself, the wind drives the adjustment plate 64 to swing. Under its vibration amplitude, the dust and particles attached to the outer end surface of the dust removal bag 62 can be more easily cleaned off under the wind.

[0041] Improving the filtration effect of centrifugal fans can not only improve air quality and remove pollutants, but more effective filtration can remove dust, pollutants, bacteria and viruses from the air, thereby providing cleaner air. At the same time, reducing harmful substances in the air can reduce the risk of respiratory diseases and other health problems, especially in sensitive areas such as hospitals, laboratories and food processing plants. As for improving system efficiency and reducing energy consumption, a clean filtration system can reduce the resistance of fan operation, thereby reducing energy consumption. Enhanced performance can effectively filter and keep air circulation smooth, help maintain the air volume and air pressure designed by the system, and improve overall performance. Reduce maintenance costs and extend equipment life can prevent dust and other particulate matter from entering the fan and related equipment, and can also reduce wear and corrosion, extending the service life of the equipment. Reduced cleaning and repairs can better filtration effect can reduce dirt accumulation inside the system, thereby reducing the frequency of maintenance and cleaning.

[0042] It can be seen from the above technical solutions that the present invention has the following beneficial effects:

[0043] The purpose of this scheme is to absorb and clean the dust contained in the air sucked by the fan body 1 through the wind control component 6. The air passes through the installation sleeve 7 and the spiral column 8 rotates to drive the air into the fan duct 4 in a spiral wind direction. Under the action of the spiral wind direction, the air is attached to the inner wall of the fan duct 4 and moves slowly. In this way, the air passes through the hemispherical groove 61, so that the dust and particles in the air are adsorbed on the surface of the dust removal bag 62. In addition, under the action of multiple hemispherical grooves 61, the wind movement path is increased, so that the dust in the air can be fully adsorbed by the dust removal bag 62. When cleaning the dust and particles accumulated on the surface of the dust removal bag 62, the wind force of the centrifugal fan is increased. The electromagnetic ring 16 is used to attract the magnetic block 65 to change the adjustment plate 64 from vertical to horizontal. The adjustment plate 64 is moved horizontally and under the action of wind resistance, so that the connecting piece 63 is forced to pull the dust bag 62, so that the dust bag 62 protrudes to the outside of the hemispherical groove 61. The water storage tank 9 is used to spray atomized water with spiral wind direction to the inner wall of the fan pipe 4 to clean the dust and particles on the surface of the dust bag 62. Dust, pollutants, bacteria and viruses in the air can be removed more effectively, thereby providing cleaner air, and can reduce the accumulation of dirt inside the system, thereby reducing the frequency of maintenance and cleaning, and increasing the service life of the centrifugal fan.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A centrifugal fan capable of adjusting air volume, characterized in that: include: A fan body (1), wherein the front end of the fan body (1) is fixedly connected to an air inlet (2), the end of the fan body (1) away from the air inlet (2) is fixedly connected to a drive motor (3), the upper end of the fan body (1) is fixedly connected to a fan duct (4), the upper end of the fan duct (4) is fixedly connected to a filter screen (5), and the upper inner wall of the (4) is fixedly connected to an electromagnetic ring (16); A wind control component (6), wherein the number of the wind control components (6) is multiple, the multiple wind control components (6) are fixedly mounted on the inner wall of the fan duct (4), the wind control component (6) comprises a hemispherical groove (61), the multiple hemispherical grooves (61) are opened on the inner wall of the fan duct (4), and the inner wall of the hemispherical groove (61) is fixedly connected with a dust removal bag (62).

2. A centrifugal fan capable of adjusting air volume according to claim 1, characterized in that: The wind control component (6) further comprises a connecting piece (63), wherein the connecting piece (63) is fixedly connected to one end of the dust bag (62) away from the inner wall of the hemispherical groove (61), and the end of the connecting piece (63) away from the dust bag (62) is rotatably connected to an adjustment plate (64).

3. A centrifugal fan capable of adjusting air volume according to claim 1, characterized in that: The wind control component (6) further comprises a magnetic attraction block (65), wherein the magnetic attraction block (65) is fixedly connected to the lower end of the adjustment plate (64), and the inner wall of the fan duct (4) is inlaid with a plurality of electromagnetic rings (16) matching the adjustment plate (64), and the electromagnetic rings (16) and the hemispherical grooves (61) are distributed in an alternating manner.

4. The centrifugal fan capable of adjusting air volume according to claim 1, characterized in that: The inner wall of the air outlet of the fan body (1) is fixedly connected with a mounting sleeve (7), and the inner end of the mounting sleeve (7) is rotatably connected with a spiral column (8).

5. The centrifugal fan capable of adjusting air volume according to claim 1, characterized in that: A water storage tank (9) is fixedly connected to the inner wall of the fan duct (4) on one side close to the fan body (1), and a plurality of spray heads (10) are fixedly connected to the end of the water storage tank (9) away from the fan duct (4).

6. The centrifugal fan capable of adjusting air volume according to claim 1, characterized in that: The inner end of the fan duct (4) is fixedly connected to an annular baffle (11), and the annular baffle (11) is located at the upper end of the water storage tank (9). The outer end of the fan duct (4) is provided with a drainage hole (12).

7. A centrifugal fan capable of adjusting air volume according to claim 6, characterized in that: A recovery box (13) is fixedly connected to the outer end of the fan duct (4), and the recovery box (13) is in communication with the drainage hole (12).

8. The centrifugal fan capable of adjusting air volume according to claim 1, characterized in that: An inflatable bag (14) is fixedly connected to the inner end of the fan body (1), and the inflatable bag (14) is made of wear-resistant material. A shaping support frame is provided inside the inflatable bag (14).

9. The centrifugal fan capable of adjusting air volume according to claim 5, characterized in that: The lower end of the driving motor (3) is fixedly connected to a water supply tank (15), and the water supply tank (15) is connected to the water storage tank (9) through a pipeline.

10. The centrifugal fan capable of adjusting air volume according to claim 1, characterized in that: The dust removal bag (62) is made of a mixture of elastic and dust absorbing materials.

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