Fan system and lampblack treatment device

Abstract

The utility model relates to the technical field of household appliances, in particular to a fan system and an oil smoke treatment device. The fan system and the lampblack treatment device comprise a mounting part, an impeller assembly and at least two guide vanes, a smoke inlet is formed in the mounting part, the impeller assembly is arranged on the downstream of the mounting part and opposite to the smoke inlet, and the at least two guide vanes are arranged on the mounting part and located on the upstream of the mounting part. The at least two guide vanes are distributed in a vortex shape around the center line of the smoke inlet, each guide vane comprises a radial outer end edge, oil smoke can flow in from the radial outer end edges and enter the smoke inlet under the guide of the guide vanes, the oil smoke can be pre-whirled through the at least two guide vanes, mutual collision between airflow in the oil smoke is reduced, and the oil smoke is prevented from entering the smoke inlet. The air volume loss is reduced, the air exhaust kinetic energy is effectively improved, the smoke suction and exhaust effects of the oil smoke treatment device are greatly enhanced, and the energy consumption of the whole oil smoke treatment device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a fan system and an oil fume treatment device. Background Art

[0002] An oil fume machine usually includes a housing and a fan system arranged therein. The housing includes an air inlet and an air outlet. The fan system can filter the oil fume entering from the air inlet, and the filtered clean gas is discharged from the air outlet.

[0003] The existing fan system usually includes a mounting member and an impeller assembly. The impeller assembly is arranged downstream of the mounting member. A flue gas inlet is formed on the mounting member. The impeller assembly is opposite to the flue gas inlet. When the impeller assembly rotates, the oil fume can flow to the impeller assembly through the flue gas inlet. The oil fume is subjected to gas-liquid separation under the action of the impeller assembly, so as to realize the filtering effect on the oil fume. However, during the process of the oil fume entering the flue gas inlet, the airflows inside the oil fume collide with each other, resulting in serious air volume loss. Turbulence is easily formed inside the oil fume, leading to a reduction in the exhaust kinetic energy, and the smoking and exhaust effect of the oil fume machine will be greatly reduced, resulting in high energy consumption of the entire oil fume machine.

[0004] Therefore, it is urgent to design a new fan system and an oil fume treatment device to improve the problems of poor smoking and exhaust effect and high energy consumption of the oil fume treatment device. Summary of the Utility Model

[0005] An object of the utility model is to provide a fan system to improve the smoking and exhaust effect of an oil fume treatment device and reduce the energy consumption of the oil fume treatment device.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A fan system includes:

[0008] A mounting member, on which a flue gas inlet is formed;

[0009] An impeller assembly, arranged downstream of the mounting member and opposite to the flue gas inlet; and

[0010] At least two guide vanes, arranged on the mounting member and located upstream of the mounting member. The at least two guide vanes are distributed in a spiral shape around the center line L c of the flue gas inlet. The guide vane includes a radially outer end edge, and the oil fume can flow in from the radially outer end edge and enter the flue gas inlet under the guidance of the guide vane.

[0011] As an optional solution, the guide vane further includes a radially inner end edge. The connection line between the radially outer end edge and the radially inner end edge is the first connection line L a , and the perpendicular connection line from the radially outer end edge to the center line L c is the second connection line Lb The first connecting line L a and the second connecting line L b form a swirling angle α. The first connecting line L of each guide vane a is located on the same side of the corresponding second connecting line L b , and the swirling angle α of each guide vane is the same.

[0012] As an alternative solution, the mounting member has a first contour circle C1 and a second contour circle C2. The flue gas inlet, the second contour circle C2, and the first contour circle C1 are coaxially arranged in sequence from inside to outside. The radially outer edges of at least two guide vanes are all located on the first contour circle C1, and the radially inner edges of at least two guide vanes are all located on the second contour circle C2.

[0013] As an alternative solution, the perpendicular distance from the radially outer edge to the center line L c is the first distance L1, and the perpendicular distance from the radially inner edge to the center line L c is the second distance L2, where L2 / L1 is 0.6 to 0.8.

[0014] As an alternative solution, the fan system further includes a motor that can drive the impeller assembly to rotate. The impeller assembly includes a wheel disc, a wheel cover, and a plurality of rotating blades. The wheel cover is provided with an air inlet. The wheel cover and the wheel disc are arranged at intervals along the flow direction of the oil fume. The plurality of rotating blades are arranged between the wheel disc and the wheel cover and are spaced apart circumferentially along the wheel disc.

[0015] As an alternative solution, the mounting member includes:

[0016] A first baffle plate with a flue gas inlet formed thereon; and

[0017] A guide member extending from the flue gas inlet in the flow direction of the oil fume. The guide member can guide the oil fume at the flue gas inlet into the air inlet.

[0018] As an alternative solution, the guide member is a first annular structure, and the inner diameter of the first annular structure gradually decreases along the flow direction of the oil fume; and / or

[0019] The wheel cover is a second annular structure, and the inner diameter of the second annular structure gradually increases along the flow direction of the oil fume; and / or

[0020] The guide member is inserted into the wheel cover.

[0021] As an alternative solution, the mounting member is a volute, and the impeller assembly includes a plurality of rotating blades. The plurality of rotating blades are arranged inside the volute.

[0022] As an alternative solution, the plurality of rotating blades are distributed in a swirling shape around the center line L c , and the swirling direction of the arrangement of the rotating blades is the same as the swirling direction of the arrangement of the guide vanes; and / or

[0023] The oil fume flowing through the guide vane rotates in a preset rotation direction, and the preset rotation direction is the same as the rotation direction of the impeller assembly.

[0024] Another object of the present invention is to provide an oil fume treatment device, which improves the smoking and exhaust effect of the oil fume treatment device and reduces the energy consumption of the oil fume treatment device.

[0025] To achieve this purpose, the present invention adopts the following technical solutions:

[0026] An oil fume treatment device includes a housing, an air inlet and an air outlet are provided on the housing. The oil fume treatment device further includes a fan system as described above. The mounting member includes a first baffle. The first baffle is disposed in the housing and divides the inner cavity of the housing into a communicating cavity and a receiving cavity. The impeller assembly is disposed in the receiving cavity. The flue gas inlet is opened on the first baffle. The air inlet, the communicating cavity, the flue gas inlet, the air inlet of the impeller assembly, the receiving cavity and the air outlet are connected in sequence along the flowing direction of the oil fume.

[0027] The beneficial effects of the present invention:

[0028] The fan system provided by the present invention includes a mounting member, an impeller assembly and at least two guide vanes. A flue gas inlet is opened on the mounting member. The impeller assembly is disposed downstream of the mounting member and opposite to the flue gas inlet. At least two guide vanes are disposed on the mounting member and upstream of the mounting member. The at least two guide vanes are distributed in a vortex shape around the center line of the flue gas inlet. The guide vane includes a radially outer edge. The oil fume can flow in from the radially outer edge and enter the flue gas inlet under the guidance of the guide vane.

[0029] When the oil fume approaches the flue gas inlet, the oil fume can be pre-rotated through at least two guide vanes. The at least two guide vanes can rectify the oil fume near the flue gas inlet. The oil fume forms a stable flowing vortex, reducing the mutual collision between the airflows inside the oil fume, reducing the air volume loss, effectively improving the exhaust kinetic energy, greatly enhancing the smoking and exhaust effect of the oil fume treatment device, and reducing the energy consumption of the entire oil fume treatment device.

[0030] The oil fume treatment device provided by the present invention includes the above fan system, which can improve the smoking and exhaust effect of the oil fume treatment device and reduce the energy consumption of the oil fume treatment device. Description of the Drawings

[0031] Figure 1 It is a sectional side view of the oil fume treatment device provided in the first embodiment of the present invention;

[0032] Figure 2 It is a sectional view of the oil fume treatment device provided in the first embodiment of the present invention;

[0033] Figure 3 It is a schematic structural diagram of the fan system provided in the first embodiment of the present utility model;

[0034] Figure 4 It is a bottom view of the mounting member and the guide vane provided in the first embodiment of the present utility model;

[0035] Figure 5 It is a schematic structural diagram of the mounting member and the guide vane provided in the first embodiment of the present utility model;

[0036] Figure 6 It is a schematic structural diagram of the mounting member and the guide vane provided in the second embodiment of the present utility model;

[0037] Figure 7 It is a schematic structural diagram of the fan system provided in the third embodiment of the present utility model.

[0038] In the figure:

[0039] 100, oil fume treatment device;

[0040] 10, housing; 11, main chassis; 111, communicating cavity; 112, accommodating cavity; 1121, sealing cavity; 1122, sound-absorbing cavity; 113, air outlet; 12, main body of the smoke collecting cavity; 121, air inlet; 122, smoke collecting cavity; 13, second baffle; 131, through hole;

[0041] 20, fan system; 21, motor; 22, mounting member; 221, first baffle; 2211, flue gas inlet; 2212, second mounting lug; 222, guide member; 23, impeller assembly; 231, wheel disc; 232, wheel cover; 2321, air inlet; 233, rotating blade; 24, mounting frame; 241, first mounting lug; 25, guide vane; 251, radially outer edge; 252, radially inner edge. Detailed implementation manners

[0042] The technical solutions of the present utility model will be further described below in conjunction with the drawings and the embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all of them.

[0043] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above and over", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below and under", and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0045] In the description of the embodiments of the present disclosure, the orientation or positional relationships such as "above", "below", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0046] Embodiment 1

[0047] Such as Figure 1 And Figure 2As shown in the figure, this embodiment provides an oil fume treatment device 100, which can be an oil fume extractor, an integrated stove, an oil fume purification system, etc. This embodiment takes an oil fume extractor as an example for illustration. The oil fume extractor includes a housing 10 and a fan system 20. The housing 10 includes a main machine box 11 and a smoke collecting cavity main body 12. An inner cavity (not labeled in the figure) and an air outlet 113 are provided on the main machine box 11. The air outlet 113 is communicated with the inner cavity. A smoke collecting cavity body 122 and an air inlet 121 are provided on the smoke collecting cavity main body 12. The air inlet 121 is communicated with the smoke collecting cavity body 122. The inner cavity is communicated with the smoke collecting cavity body 122. The fan system 20 is arranged in the inner cavity. When the fan system 20 works, the oil fume outside the smoke collecting cavity main body 12 can sequentially pass through the air inlet 121, the smoke collecting cavity body 122 and the inner cavity. The oil fume is filtered in the fan system 20, and the filtered clean gas is discharged to the outside through the air outlet 113. Among them, the smoke collecting cavity main body 12 can have a good smoke gathering effect on the oil fume, which is convenient for the oil fume extractor to absorb the oil fume better.

[0048] It should be noted that the oil fume extractor shown in the embodiments of the present disclosure can also be a top suction type oil fume extractor, but the oil fume extractor applicable to the fan system 20 is not limited to this form. The oil fume extractor can also be other types such as a low suction type oil fume extractor or a side suction type oil fume extractor.

[0049] As Figure 3 shown in the figure, the fan system 20 generally includes a mounting member 22 and an impeller assembly 23. The impeller assembly 23 is arranged downstream of the mounting member 22. A flue gas inlet 2211 is formed on the mounting member 22. The impeller assembly 23 is opposite to the flue gas inlet 2211. When the impeller assembly 23 rotates, the oil fume can flow to the impeller assembly 23 through the flue gas inlet 2211. The oil fume is subjected to gas-liquid separation under the action of the impeller assembly 23, so as to realize the filtering effect on the oil fume. However, during the process of the oil fume entering the flue gas inlet 2211, the airflows inside the oil fume collide with each other, and the air volume loss is relatively serious. Turbulence is easily formed inside the oil fume, resulting in a reduction in the exhaust kinetic energy, and the smoking and exhaust effect of the oil fume extractor will be greatly reduced, making the energy consumption of the entire oil fume extractor relatively high.

[0050] To solve the above problems, as Figure 4 and Figure 5 shown in the figure, the fan system 20 further includes at least two guide vanes 25. The at least two guide vanes 25 are arranged on the mounting member 22 and located upstream of the mounting member 22. The at least two guide vanes 25 are wound around the center line L of the flue gas inlet 2211 cIt is distributed in a swirling shape. The guide vane 25 includes a radially outer edge 251. Cooking fumes can flow in from the radially outer edge 251 and enter the flue gas inlet 2211 under the guidance of the guide vane 25. When the cooking fumes approach the flue gas inlet 2211, the cooking fumes can be pre-swirled through at least two guide vanes 25. At least two guide vanes 25 can rectify the cooking fumes near the flue gas inlet 2211. The cooking fumes form a stable flowing swirl P, reducing the mutual collision between the internal airflows of the cooking fumes, reducing the air volume loss, effectively improving the exhaust kinetic energy, greatly enhancing the smoking and exhaust effect of the range hood, and reducing the energy consumption of the entire range hood.

[0051] As Figure 4 shown, the guide vane 25 further includes a radially inner edge 252. The connection line between the radially outer edge 251 and the radially inner edge 252 is the first connection line L a , and the vertical connection line from the radially outer edge 251 to the center line L c is the second connection line L b . The first connection line L a and the second connection line L b form a swirl angle α. The first connection line L a of each guide vane 25 is located on the same side of the corresponding second connection line L b . The swirl angle α of each guide vane 25 is the same, and the inclination manner and the swirl angle α of each guide vane 25 are the same, which can make the formed swirl P more stable in the circumferential direction, enable the cooking fumes to enter the flue gas inlet 2211 in large quantities and at high speeds, further reduce the air volume loss, further improve the exhaust kinetic energy, further enhance the smoking and exhaust effect of the range hood, and further reduce the energy consumption of the entire range hood.

[0052] As Figure 4 and Figure 5 shown, at least two guide vanes 25 are evenly arranged along the circumferential direction of the flue gas inlet 2211, which can make the formed swirl P more stable in the circumferential direction, enable the cooking fumes to enter the flue gas inlet 2211 in large quantities and at high speeds, further reduce the air volume loss, further improve the exhaust kinetic energy, further enhance the smoking and exhaust effect of the range hood, and further reduce the energy consumption of the entire range hood.

[0053] Specifically, as Figure 4As shown, the mounting member 22 has a first contour circle C1 and a second contour circle C2. The flue gas inlet 2211, the second contour circle C2, and the first contour circle C1 are coaxially arranged in sequence from inside to outside. The radially outer edges 251 of at least two guide vanes 25 are all located on the first contour circle C1, and the radially inner edges 252 of at least two guide vanes 25 are all located on the second contour circle C2, which can make the formed swirl P more stable in the circumferential direction, enable a large amount of oil fume to enter the flue gas inlet 2211 at high speed, further reduce the air volume loss, further improve the exhaust kinetic energy, further enhance the smoking and exhaust effect of the range hood, and further reduce the energy consumption of the entire range hood.

[0054] As Figure 4 shown, the vertical distance from the radially outer edge 251 to the center line L c is the first distance L1, and the vertical distance from the radially inner edge 252 to the center line L c is the second distance L2. Among them, L2 / L1 is 0.6 to 0.8 to enable the oil fume with a large air volume to smoothly enter the flue gas inlet 2211. Exemplarily, L2 / L1 can be 0.6, 0.65, 0.7, 0.75, 0.8, etc. L2 / L1 can be determined according to the actual air volume requirement of the range hood.

[0055] As Figure 4 and Figure 5 shown, the guide vane 25 is an arc-shaped plate. The guide vane 25 has a double arc surface. The setting of the double arc surface can reduce the impact of the oil fume on the guide vane 25, reduce the noise during the use of the range hood, achieve the silent use of the range hood, realize the smooth inflow of the oil fume, reduce the kinetic energy loss of the oil fume, reduce the air volume loss, improve the exhaust kinetic energy, enhance the smoking and exhaust effect of the range hood, and reduce the energy consumption of the entire range hood.

[0056] As Figures 1 to 3 shown, the fan system 20 is a volute-less centrifugal fan. The fan system 20 further includes a motor 21. The motor 21 can drive the impeller assembly 23 to rotate. The impeller assembly 23 includes a wheel disc 231, a wheel cover 232, and a plurality of rotating blades 233. The air inlet 2321 is opened on the wheel cover 232. The wheel cover 232 and the wheel disc 231 are arranged at intervals along the flow direction S of the oil fume as Figure 3 shown. A plurality of rotating blades 233 are arranged between the wheel disc 231 and the wheel cover 232 and are arranged at intervals along the circumferential direction of the wheel disc 231. The structure of the volute-less centrifugal fan is simple, small in size, and occupies a small space in the housing 10.

[0057] In addition, by taking advantage of the volute-less feature of the volute-less centrifugal fan, it is possible to avoid a large impact on the impeller assembly 23 by the flowing oil fume, and avoid the problem of relatively high noise of the range hood caused by the impact, thereby enabling the silent use of the range hood. In addition, by using the volute-less feature of the volute-less centrifugal fan, the volute-less centrifugal fan does not have a saddle-shaped working area like an axial flow fan in the small flow rate region of the characteristic curve, and there is no "surge" phenomenon. In addition, by using the volute-less feature of the volute-less centrifugal fan, the volute-less centrifugal fan has oil fume flowing out in all 360° directions, and the oil fume can be made to flow out in a specified direction by adding an external box, making the installation more convenient. In addition, by using the volute-less feature of the volute-less centrifugal fan, the cleaning of the impeller assembly 23 is more convenient, and there is no need for cleaning work such as belts and belt pulleys, making it more hygienic during operation; in addition, the volute-less centrifugal fan is simple to manufacture, reduces the use of raw materials, and lowers the production cost.

[0058] As Figures 3 to 4 shown, since the wheel cover 232 rotates with the rotating blade 233, the oil fume passing through the guide vane 25 rotates in a preset rotation direction (the rotation direction of the swirl P), and the preset rotation direction is the same as the rotation direction of the impeller assembly 23, so that the oil fume can flow into the flue gas inlet 2211 more smoothly.

[0059] As Figures 1 to 3 shown, the fan system 20 further includes a mounting bracket 24, the motor 21 is fixedly arranged on the mounting bracket 24, and the mounting bracket 24 is fixedly connected to the housing 10, thereby realizing the stable supporting effect of the mounting bracket 24 on the motor 21.

[0060] Specifically, as Figures 1 to 3 shown, the mounting bracket 24 includes a first mounting lug 241, and the first mounting lug 241 is fixedly connected to the housing 10, thereby achieving a better fixing effect between the mounting bracket 24 and the housing 10.

[0061] As Figures 1 to 3 shown, the mounting member 22 includes a first baffle 221, a flue gas inlet 2211 is formed on the first baffle 221, the first baffle 221 is arranged in the housing 10 and divides the inner cavity of the housing 10 into a communicating cavity 111 and a receiving cavity 112, the impeller assembly 23 is arranged in the receiving cavity 112, the flue gas inlet 2211 is formed on the first baffle 221, the air inlet 121, the communicating cavity 111, the flue gas inlet 2211, the air inlet 2321, the receiving cavity 112 and the air outlet 113 are sequentially connected in the flowing direction S of the oil fume, ensuring the independence of the communicating cavity 111 and the receiving cavity 112 respectively, ensuring a better sealing effect of the receiving cavity 112, and being able to achieve a relatively sufficient separation and filtration effect of the impeller assembly 23 on the oil liquid and impurities in the oil fume.

[0062] As Figures 1 to 3As shown, the first baffle 221 includes a second mounting lug 2212, and the second mounting lug 2212 is fixedly connected to the housing 10, thereby achieving a better fixing effect between the first baffle 221 and the housing 10.

[0063] As Figures 1 to 3 shown, the mounting member 22 further includes a diversion member 222, and the diversion member 222 extends from the flue gas inlet 2211 in the flowing direction S of the oil fume. The diversion member 222 can divert the oil fume at the flue gas inlet 2211 into the air inlet 2321, enabling the oil fume at the flue gas inlet 2211 to enter the air inlet 2321 better, thereby achieving a better separation and filtration effect of the oil fume inhaled by the impeller assembly 23.

[0064] As Figures 1 to 3 shown, the diversion member 222 is a first annular structure. Along the flowing direction S of the oil fume, the inner diameter of the first annular structure gradually decreases. During the process of the oil fume passing through the diversion member 222, the effects of pressure increase and acceleration can be achieved, enhancing the smoking and exhaust effects of the range hood and reducing the energy consumption of the entire range hood.

[0065] As Figures 1 to 3 shown, the wheel cover 232 is a second annular structure. Along the flowing direction S of the oil fume, the inner diameter of the second annular structure gradually increases. The second annular structure is arranged in an arc shape and bends away from the rotating blade 233. The second annular structure is used to guide the flow of the oil fume, making the flow of the oil fume smoother.

[0066] As Figures 1 to 3 shown, the diversion member 222 is inserted into the wheel cover 232, thereby achieving better guiding of the oil fume in the flue gas inlet 2211 into the air inlet 2321, and thus achieving a more sufficient filtration effect of the impeller assembly 23 on the oil fume.

[0067] As Figure 1 and Figure 2 shown, the housing 10 further includes a second baffle 13. The second baffle 13 is arranged in the accommodation cavity 112. The second baffle 13 divides the accommodation cavity 112 into a sealed cavity 1121 and a sound-absorbing cavity 1122. The fan system 20 is arranged in the sealed cavity 1121. The sound-absorbing cavity 1122 is communicated with the air outlet 113. The second baffle 13 is provided with a through hole 131, and the through hole 131 communicates the sealed cavity 1121 and the sound-absorbing cavity 1122. The separate setting of the sound-absorbing cavity 1122 can weaken the noise transmission and reduce the noise during the use of the range hood.

[0068] Embodiment 2

[0069] The present disclosure embodiment provides a fan system 20. The structure of this fan system 20 is basically the same as that of the fan system 20 in Embodiment 1. The main difference between the two is that as Figure 6As shown, the flow guiding vane 25 is a flat plate. Compared with the arc plate structure in the first embodiment, the structure of the flow guiding vane 25 in the embodiment of the present disclosure is simple and easy to manufacture.

[0070] Embodiment Three

[0071] The embodiment of the present disclosure provides a fan system 20. The structure of the fan system 20 is basically the same as that of the fan system 20 in the first embodiment. The main difference between the two is that, as Figure 7 shown, the fan system 20 in the embodiment of the present disclosure is a volute centrifugal fan. The mounting member 22 is a volute. The impeller assembly 23 includes a plurality of rotating blades 233. The plurality of rotating blades 233 are arranged inside the volute. The volute centrifugal fan can achieve a better oil fume suction effect.

[0072] As Figure 7 shown, the plurality of rotating blades 233 are distributed in a spiral shape around the center line L c and the arrangement rotation direction of the rotating blades 233 is the same as that of the flow guiding vane 25, so that the oil fume can enter the flue gas inlet 2211 more smoothly.

[0073] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A fan system, characterized in that: include: A mounting member (22), wherein a smoke inlet (2211) is provided on the mounting member (22); An impeller assembly (23) is arranged downstream of the mounting member (22) and opposite to the flue gas inlet (2211); as well as At least two guide vanes (25) are arranged on the mounting member (22) and are located upstream of the mounting member (22), and at least two of the guide vanes (25) are arranged around a center line L of the flue gas inlet (2211). c The guide blades (25) are distributed in a vortex shape, and include a radial outer edge (251). Oil smoke can flow in from the radial outer edge (251) and enter the smoke inlet (2211) under the guidance of the guide blades (25).

2. The fan system according to claim 1, characterized in that: The guide blade (25) further comprises a radial inner end edge (252), and a line connecting the radial outer end edge (251) and the radial inner end edge (252) is a first line L a , the radial outer edge (251) to the center line L c The vertical line is the second line L b , the first line L a The second connection line L b Forming a rotation angle α, the first connecting line L of each of the guide blades (25) a are located at the corresponding second connecting line L b On the same side of the guide blade (25), the rotation angle α of each guide blade (25) is the same.

3. The fan system according to claim 2, characterized in that: The mounting member (22) has a first contour circle C1 and a second contour circle C2, the smoke inlet (2211), the second contour circle C2 and the first contour circle C1 are coaxially arranged in sequence from the inside to the outside, the radial outer end edges (251) of at least two of the guide blades (25) are both located on the first contour circle C1, and the radial inner end edges (252) of at least two of the guide blades (25) are both located on the second contour circle C2.

4. The fan system according to claim 3, characterized in that: The radial outer edge (251) to the center line L c The vertical distance between the radial inner edge (252) and the center line L is a first distance L1. c The vertical distance is the second distance L2, wherein L2 / L1 is 0.6-0.

8.

5. The fan system according to claim 1, characterized in that: The fan system further comprises a motor (21), the motor (21) being capable of driving the impeller assembly (23) to rotate, the impeller assembly (23) comprising a wheel disc (231), a wheel cover (232), and a plurality of rotating blades (233), the wheel cover (232) being provided with an air inlet (2321), the wheel cover (232) and the wheel disc (231) being arranged at intervals along the flow direction of the oil smoke, and the plurality of rotating blades (233) being arranged between the wheel disc (231) and the wheel cover (232) and being arranged at intervals along the circumference of the wheel disc (231).

6. The fan system according to claim 5, characterized in that: The mounting member (22) comprises: a first baffle (221) on which the smoke inlet (2211) is provided; and The guide member (222) is formed by extending the smoke inlet (2211) toward the flow direction of the oil smoke, and the guide member (222) can guide the oil smoke at the smoke inlet (2211) into the air inlet (2321).

7. The fan system according to claim 6, characterized in that: The flow guide (222) is a first annular structure, and the inner diameter of the first annular structure gradually decreases along the flow direction of the oil smoke; and / or The wheel cover (232) is a second annular structure, and the inner diameter of the second annular structure gradually increases along the flow direction of the oil smoke; and / or The flow guide (222) is plugged into the wheel cover (232).

8. The fan system according to claim 1, characterized in that: The mounting member (22) is a volute, and the impeller assembly (23) comprises a plurality of rotating blades (233), wherein the plurality of rotating blades (233) are arranged inside the volute.

9. The fan system according to claim 5 or 8, characterized in that: The plurality of rotating blades (233) are arranged around the center line L c The rotating blades (233) are distributed in a vortex shape, and the arrangement direction of the rotating blades (233) is the same as the arrangement direction of the guide blades (25); and / or The oil smoke flowing through the guide blade (25) rotates in a preset rotation direction, and the preset rotation direction is the same as the rotation direction of the impeller assembly (23).

10. A fume treatment device, comprising a housing (10), wherein the housing (10) is provided with an air inlet (121) and an air outlet (113), wherein: The oil fume treatment device further comprises a fan system as claimed in any one of claims 1 to 9, wherein the mounting member (22) comprises a first baffle (221), the first baffle (221) being arranged in the outer shell (10) and dividing the inner cavity of the outer shell (10) into a connecting cavity (111) and a containing cavity (112), the impeller assembly (23) being arranged in the containing cavity (112), the smoke inlet (2211) being opened on the first baffle (221), the air inlet (121), the connecting cavity (111), the smoke inlet (2211), the air inlet (2321) of the impeller assembly (23), the containing cavity (112) and the air outlet (113) being sequentially connected along the flow direction of the oil fume.

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