Fan system and range hood

Abstract

The utility model relates to the technical field of range hoods, and particularly discloses a fan system and a range hood, and the fan system comprises a fan shell, an impeller, a motor bracket, a motor, a reinforcing piece and an airflow guide piece. The fan shell is provided with an air duct, an air outlet and at least one air inlet, the air outlet and the air inlet are both communicated with the air duct, the motor support is arranged on the fan shell, the motor is installed on the motor support and is in transmission connection with the impeller, and the reinforcing piece is arranged at one air inlet and is at least connected with one of the fan shell and the motor support. The airflow guide member is arranged on the reinforcing member. According to the technical scheme, the structural strength of the fan shell and / or the motor bracket can be enhanced through the reinforcer, so that when the motor works, the vibration of the fan shell and / or the motor bracket is weakened, and abnormal noise caused by the vibration is avoided; and meanwhile, the airflow passing through the air inlet is guided through the airflow guiding piece, so that the impact of the airflow on the fan system is reduced, and abnormal noise caused by airflow impact is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a fan system and a range hood. Background Art

[0002] During the operation of the range hood, different degrees of "abnormal noise" may occur according to the actual use environment and the assembly relationship of the whole machine parts. The so-called "abnormal noise" is relative to the inevitable "basic noise" that exists in any machine. In essence, it is not necessarily caused by the inherent excitation source inside the machine. Most of them are caused by some kind of fault inside the machine. In other words, the abnormal noise is the external manifestation formed by the unreasonable assembly relationship inside the machine. When there is abnormal noise, the user will feel the harsh sound of the range hood. Among them, the fan system as the power source of the range hood is also the source of abnormal noise. On the one hand, the fan system will absorb oil smoke when working. The airflow formed by the oil smoke will impact the fan system in the process of entering the fan system, and it is easy to produce abnormal noise. On the other hand, the motor of the fan system will generate vibration when driving the impeller to rotate. Vibration can also cause abnormal noise in the fan system and other parts of the range hood.

[0003] Therefore, there is an urgent need for a fan system and a range hood to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a fan system and a range hood to enhance the effect of eliminating abnormal noise.

[0005] On the one hand, the utility model provides a fan system, comprising a fan housing, a motor bracket arranged on the fan housing, a motor mounted on the motor bracket, and an impeller drivingly connected to the motor, the fan housing having an air duct, and an exhaust port and at least one air inlet both of which are connected to the air duct, the motor bracket being arranged at one of the air inlets, and the fan system further comprising:

[0006] A reinforcement member, disposed at one of the air inlets, and the reinforcement member is connected to at least one of the fan housing and the motor bracket;

[0007] The airflow guide is arranged on the reinforcement member.

[0008] As an optimal technical solution for the fan system, the reinforcement is in a trumpet shape, the center line of the reinforcement coincides with the center line of the air inlet, the reinforcement has a large end and a small end, the large end is located on the outside of the air inlet, and the small end extends into the inside of the air inlet.

[0009] As a preferred technical solution of the fan system, the airflow guide is close to the large end and away from the small end.

[0010] As a preferred technical solution of the fan system, along the centerline direction of the reinforcement, the airflow guide is at least partially located outside the large end.

[0011] As a preferred technical solution of the fan system, the airflow guide is movably connected to the reinforcement member, and the fan system also includes a driving member transmission-connected to the airflow guide member, and the driving member is used to drive the airflow guide member to move relative to the reinforcement member.

[0012] As a preferred technical solution of the fan system, the airflow guide is rotatably connected to the reinforcement member.

[0013] As a preferred technical solution for the fan system, the reinforcement is provided with a plurality of noise reduction holes.

[0014] As a preferred technical solution of the fan system, the motor bracket includes a fixing ring and a plurality of connecting brackets, the fixing ring is used to fix the motor, the plurality of connecting brackets are arranged at intervals along the circumferential direction of the fixing ring, and the connecting brackets are respectively connected to the fixing ring and the fan housing;

[0015] The reinforcement is connected to a plurality of the connecting brackets; and / or the reinforcement is connected to the fixing ring.

[0016] As a preferred technical solution of the fan system, the reinforcement is connected to a plurality of the connecting brackets;

[0017] The reinforcement member includes a plurality of reinforcement plates. Along the circumferential direction of the fixing ring, the plurality of reinforcement plates and the plurality of connecting brackets are sequentially arranged at intervals, and each of the reinforcement plates is clamped with two adjacent connecting brackets.

[0018] As a preferred technical solution of the fan system, the fan system includes a plurality of airflow guides, and the plurality of airflow guides are arranged on the plurality of reinforcement sheets in a one-to-one correspondence.

[0019] As a preferred technical solution of the fan system, the reinforcement is integrally formed; or the reinforcement and the motor bracket are integrally formed.

[0020] As a preferred technical solution for the fan system, the fan system also includes a connecting piece connected to the rotating shaft of the motor, one of the impeller frame of the impeller and the connecting piece is provided with a plurality of expansion protrusions, the other of the impeller frame of the impeller and the connecting piece is provided with a slot, the plurality of expansion protrusions are all inserted into the slot, and each of the expansion protrusions is elastically pressed against the side wall of the slot.

[0021] The fan system provided by the utility model has at least the following beneficial effects:

[0022] The fan system includes a fan housing, an impeller, a motor bracket, a motor, a reinforcement and an airflow guide. The fan housing has an air duct, an exhaust port and at least one air inlet both of which are connected to the air duct, the motor bracket is arranged on the fan housing, the motor is installed on the motor bracket, and the motor is connected to the impeller in a transmission manner, the reinforcement is arranged at one of the air inlets, and the reinforcement is connected to at least one of the fan housing and the motor bracket; the airflow guide is arranged on the reinforcement. The structural strength of the fan housing and / or the motor bracket can be enhanced by the reinforcement, so that when the motor is working, the vibration of the fan housing and / or the motor bracket can be reduced, thereby avoiding the generation of abnormal noise caused by vibration; at the same time, the airflow through the air inlet is guided by the airflow guide to reduce the impact of the airflow on the fan system and avoid the generation of abnormal noise caused by the impact of the airflow.

[0023] On the other hand, the utility model provides a range hood, comprising the fan system described in any of the above schemes, the range hood also comprising a main chassis, the fan system is arranged in the main chassis, and the fan housing is connected to the main chassis.

[0024] The range hood provided by the utility model has at least the following beneficial effects:

[0025] The range hood adopts the above-mentioned fan system, which can effectively avoid the generation of abnormal noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the range hood in the embodiment of the utility model;

[0027] Figure 2 The structure of the fan system in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0028] Figure 3 This is a schematic diagram of the structure of the fan housing and the motor bracket in the embodiment of the utility model;

[0029] Figure 4 It is a schematic diagram of the structure of the reinforcement member and the airflow guide member in the embodiment of the utility model;

[0030] Figure 5 It is a schematic diagram of the structure of the reinforcing member, the airflow guiding member and the driving member in the embodiment of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the reinforcement member in the embodiment of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the connecting bracket in the embodiment of the utility model;

[0033] Figure 8The structure of the reinforcing sheet in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0034] Fig. 9 The structure of the reinforcing sheet in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0035] Fig.10 It is a cross-sectional view of a partial structure of a range hood in an embodiment of the utility model;

[0036] Fig.11 for Fig.10 Magnified view at A in the middle;

[0037] Fig.12 This is a schematic diagram of the structure of the impeller in the embodiment of the utility model;

[0038] Fig.13 for Fig.12 Magnified view at B.

[0039] In the figure:

[0040] 10. Fan system; 20. Main chassis; 30. Fume hood;

[0041] 1. Fan housing; 11. Air inlet; 12. Air outlet;

[0042] 2. impeller; 21. impeller frame; 211. expansion protrusion; 2111. guide slope;

[0043] 3. Motor bracket; 31. Fixing ring; 32. Connecting bracket;

[0044] 4. Reinforcement; 41. Noise reduction hole; 42. Reinforcement sheet;

[0045] 5. Airflow guide;

[0046] 6. Driving parts;

[0047] 71. Card convex; 72. Card slot;

[0048] 8. Connector; 81. Slot. DETAILED DESCRIPTION

[0049] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0053] The present embodiment provides a range hood, which may specifically be a top-suction range hood, a side-suction range hood, etc. The range hood may be used in a kitchen to process the fumes generated during cooking.

[0054] like Figure 1 and Figure 2As shown, the range hood includes a main case 20 and a fan system 10 arranged in the main case 20, the fan system 10 includes a fan housing 1, an impeller 2, a motor bracket 3 and a motor (not shown in the drawings), the fan housing 1 is connected to the main case 20, the fan housing 1 has an air duct (not shown in the drawings), and an exhaust port 12 and at least one air inlet 11 both connected to the air duct, the motor bracket 3 is arranged on the fan housing 1, the motor is installed on the motor bracket 3, and the motor is transmission-connected to the impeller 2, the impeller 2 can be driven by the motor to rotate and do work to generate suction, so that the oil smoke can enter the air duct from the air inlet 11 and be discharged from the exhaust port 12, and then can be discharged to the outside through the smoke exhaust duct.

[0055] Optionally, the range hood further comprises a smoke collecting hood 30 arranged on the main chassis 20, and the smoke collecting hood 30 is used to increase the smoke collecting area so that more oil smoke can be sucked into the range hood.

[0056] In existing range hoods, when the motor drives the impeller to rotate, vibration will be generated, which may easily cause the fan system and other parts of the range hood to vibrate and produce abnormal noise. At the same time, the rotation of the impeller will generate suction, prompting the oil smoke airflow to enter the air duct through the air inlet, and the airflow will impact the fan system during the flow, which may also easily produce abnormal noise.

[0057] For this, please refer to Figures 2 to 5 In this embodiment, the fan system 10 further includes a reinforcement member 4 and an airflow guide member 5. The reinforcement member 4 is arranged at one of the air inlets 11, and the reinforcement member 4 is connected to at least one of the fan housing 1 and the motor bracket 3; the airflow guide member 5 is arranged on the reinforcement member 4. In this way, the structural strength of the fan housing 1 and / or the motor bracket 3 can be enhanced by the reinforcement member 4, and then when the motor is working, the vibration of the fan housing 1 and / or the motor bracket 3 can be effectively weakened, thereby avoiding the generation of abnormal sound caused by vibration; at the same time, the airflow guide member 5 guides the airflow passing through the air inlet 11 to reduce the impact of the airflow on the fan system 10, and avoid the generation of abnormal sound caused by the impact of the airflow.

[0058] The specific number of air inlets 11 can be set according to actual needs. For example, when the number of air inlets 11 is set to one, the motor bracket 3 and the reinforcement 4 are both arranged at the air inlet 11, and the reinforcement 4 can be connected only to the motor bracket 3, and can also be connected only to the fan housing 1, and can also be connected to the motor bracket 3 and the fan housing 1 at the same time. When the number of air inlets 11 is set to two, the two air inlets 11 are respectively the first air inlet and the second air inlet, and the motor bracket 3 is arranged at the first air inlet. The reinforcement 4 can be arranged at the first air inlet or at the second air inlet. When the reinforcement 4 is arranged at the first air inlet, the reinforcement 4 can be connected only to the motor bracket 3, and can also be connected only to the fan housing 1, and can also be connected to the motor bracket 3 and the fan housing 1 at the same time. When the reinforcement 4 is arranged at the second air inlet, the reinforcement 4 can be connected only to the fan housing 1. In this embodiment, a solution is exemplified in which the fan housing 1 is provided with two air inlets 11 , the motor bracket 3 and the reinforcement member 4 are located at the same air inlet 11 , and the reinforcement member 4 is only connected to the motor bracket 3 .

[0059] It should be noted that when the reinforcement 4 is connected to the fan casing 1, and when the reinforcement 4 is connected to the fan bracket, they can be connected by connecting parts such as rivets and bolts, by welding, or by snap-on connection; of course, they can also be set as an integral whole.

[0060] Optionally, see Figure 4 The airflow guide 5 is in the shape of a wing and can guide the airflow well.

[0061] Optionally, see Figure 4 and Figure 5 The reinforcement member 4 is in a trumpet shape, the center line of the reinforcement member 4 coincides with the center line of the air inlet 11, and the reinforcement member 4 has a large end and a small end, the large end is located outside the air inlet 11, and the small end extends into the inside of the air inlet 11. Setting the reinforcement member 4 in a trumpet shape can make the reinforcement member 4 itself have a higher structural strength, further improving the effect of structural reinforcement; at the same time, it also helps to guide the airflow into the air inlet 11, and can cooperate with the airflow guide 5 to improve the effect of guiding and draining the intake airflow. In other embodiments, the small end of the reinforcement member 4 can also be set flush with the air inlet 11 as needed.

[0062] Optionally, see Figure 4 , the airflow guide 5 is close to the large end and away from the small end. Relatively speaking, when the airflow just flows into the large end of the reinforcement 4, its turbulence is relatively high. The airflow guide 5 is arranged close to the large end, which can significantly enhance the guiding effect of the airflow.

[0063] Optionally, please continue to refer to Figure 4, along the centerline direction of the reinforcement 4, the airflow guide 5 is at least partially located outside the large end. In this way, the airflow guide 5 can guide the airflow outside the large end of the reinforcement 4 so that the airflow can flow into the bell mouth of the reinforcement 4 more smoothly.

[0064] Optionally, see Figure 5 The airflow guide 5 is movably connected to the reinforcement 4, and the fan system 10 further includes a driving member 6 that is transmission-connected to the airflow guide 5, and the driving member 6 is used to drive the airflow guide 5 to move relative to the reinforcement 4. In this way, the airflow guide 5 can be adaptively adjusted according to the power of the motor when it is working, thereby meeting the requirements for noise reduction under different working conditions.

[0065] Optionally, please continue to refer to Figure 5 , the airflow guide 5 is rotatably connected to the reinforcement 4. Accordingly, the driving member 6 is an electric motor, which is used to drive the airflow guide 5 to rotate relative to the reinforcement 4, thereby adjusting the guiding direction of the airflow by the airflow guide 5. In other embodiments, the airflow guide 5 can also be slidably connected to the reinforcement 4, or the airflow guide 5 can swing relative to the reinforcement 4. Accordingly, the driving member 6 can be a cylinder, an electric push rod, etc.

[0066] Optionally, see Figure 2 , Figure 4 and Figure 5 The fan system 10 includes a plurality of airflow guides 5, and the plurality of airflow guides 5 are evenly distributed around the center line of the air inlet 11, which can further enhance the guiding effect of the airflow and strengthen the effect of eliminating abnormal noise.

[0067] Optionally, see Figure 6 , the reinforcement 4 is provided with a plurality of noise reduction holes 41. In this embodiment, under the suction provided by the fan system 10, part of the airflow can first pass through the noise reduction holes 41 and then pass through the air inlet 11 and enter the air duct. The arrangement of the noise reduction holes 41 can effectively reduce noise. Among them, the distribution area of ​​the noise reduction holes 41 can cover a part of the reinforcement 4, or can cover the entire reinforcement 4. The shape of the noise reduction holes 41 can be set to be a rhombus, a hexagon, etc.

[0068] The motor bracket 3 can be integrally formed or divided. In this embodiment, the motor bracket 3 is divided into two parts. Figure 2 , Figure 3 and Figure 7The motor bracket 3 includes a fixing ring 31 and a plurality of connecting brackets 32. The fixing ring 31 is used to fix the motor. The plurality of connecting brackets 32 are arranged at intervals along the circumferential direction of the fixing ring 31, and the connecting brackets 32 are respectively connected to the fixing ring 31 and the fan housing 1. The reinforcement 4 can be connected to the plurality of connecting brackets 32, or the reinforcement 4 can also be connected to the fixing ring 31, or the reinforcement 4 can also be connected to the fixing ring 31 and the plurality of connecting brackets 32 at the same time. It should be noted that when the reinforcement 4 is connected to the fixing ring 31, the inner edge of the reinforcement 4 can be connected to the inner edge of the fixing ring 31.

[0069] Please refer to Figures 4 to 6 In this embodiment, the reinforcement member 4 can be integrally formed. When the reinforcement member 4 is integrally formed, it can ensure that the reinforcement member 4 has a high structural strength and enhance the vibration reduction effect, while reducing the number of parts. Preferably, when the motor bracket 3 is integrally formed, the reinforcement member 4 can also be integrally formed with the motor bracket 3, so as to further reduce the number of parts, further improve the structural strength of the motor bracket 3, and enhance the effect of eliminating abnormal noise.

[0070] Please refer to Figures 7 to 9 , the reinforcement member 4 can also be set separately. When the reinforcement member 4 is set separately, when the reinforcement member 4 is maintained, it is not necessary to replace the reinforcement member 4 as a whole, which is convenient for reducing maintenance costs. For details, please refer to Figure 7 and Figure 8 In this embodiment, the reinforcement member 4 includes a plurality of reinforcement sheets 42. Along the circumferential direction of the fixing ring 31, the plurality of reinforcement sheets 42 and the plurality of connecting brackets 32 are sequentially arranged at intervals, and each reinforcement sheet 42 is engaged with two adjacent connecting brackets 32. Specifically, the reinforcement sheet 42 and the connecting bracket 32 ​​are engaged with each other through an engaging structure. The engaging structure includes an engaging protrusion 71 and an engaging groove 72. The engaging protrusion 71 is arranged on one of the reinforcement sheet 42 and the connecting bracket 32, and the engaging groove 72 is arranged on the other of the reinforcement sheet 42 and the connecting bracket 32. Preferably, each reinforcement sheet 42 and the corresponding connecting bracket 32 ​​can be engaged with each other through a plurality of engaging structures to ensure the stability of the connection between the reinforcement sheet 42 and the connecting bracket 32. Further preferably, a plurality of airflow guides 5 are arranged on a plurality of reinforcement sheets 42 in a one-to-one correspondence. In other embodiments, the airflow guide 5 can also be arranged only on a part of the reinforcement sheets 42.

[0071] Optionally, see Figures 10 to 13The fan system 10 further includes a connector 8 connected to the rotating shaft of the motor, one of the impeller frame 21 of the impeller 2 and the connector 8 is provided with a plurality of expansion protrusions 211, and the other of the impeller frame 21 of the impeller 2 and the connector 8 is provided with a slot 81, and the plurality of expansion protrusions 211 are all inserted into the slot 81, and each expansion protrusion 211 is elastically pressed against the side wall of the slot 81. Such a configuration can ensure that the motor shaft and the impeller frame 21 are stably connected, and when the motor drives the impeller 2 to rotate, the impeller 2 can rotate more smoothly, avoiding the impeller 2 from shaking relative to the motor, thereby reducing vibration and avoiding abnormal noise. Specifically, in this embodiment, the slot 81 is a cylindrical groove, and a plurality of expansion protrusions 211 are evenly distributed along the circumferential direction. Each expansion protrusion 211 can produce elastic deformation to a certain extent under the action of external force. Before the expansion protrusion 211 is plugged into the slot 81, the outer diameter of the circumference where the expansion protrusions 211 are located is greater than the inner diameter of the slot 81. During the process of inserting the expansion protrusions into the slot 81, the groove wall of the slot 81 and the outer side wall of each expansion protrusion 211 contact and cause each expansion protrusion 211 to produce adaptive elastic deformation. The expansion protrusions 211 as a whole move closer to the center, so that the connector 8 can be stably connected to the impeller frame 21 of the impeller 2. Preferably, the expansion protrusion 211 is provided with a guide slope 2111 to facilitate guiding the expansion protrusion 211 to be inserted into the slot 81.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled 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 implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A fan system, comprising a fan housing (1), a motor bracket (3) arranged on the fan housing (1), a motor mounted on the motor bracket (3), and an impeller (2) drivingly connected to the motor, the fan housing (1) having an air duct, and an air outlet (12) and at least one air inlet (11) both of which are connected to the air duct, the motor bracket (3) being arranged at one of the air inlets (11), characterized in that: The fan system also includes: A reinforcement member (4) is arranged at one of the air inlets (11), and the reinforcement member (4) is connected to at least one of the fan housing (1) and the motor bracket (3); An airflow guide (5) is arranged on the reinforcement member (4).

2. The fan system according to claim 1, characterized in that: The reinforcement (4) is trumpet-shaped, the center line of the reinforcement (4) coincides with the center line of the air inlet (11), the reinforcement (4) has a large end and a small end, the inner diameter of the large end is larger than the inner diameter of the small end, the large end is located outside the air inlet (11), and the small end extends into the inside of the air inlet (11).

3. The fan system according to claim 2, characterized in that: The airflow guide (5) is close to the large end and away from the small end.

4. The fan system according to claim 2, characterized in that: Along the centerline direction of the reinforcement member (4), the airflow guide member (5) is at least partially located outside the large end.

5. The fan system according to claim 1, characterized in that: The airflow guide (5) is movably connected to the reinforcement (4), and the fan system further comprises a driving member (6) which is transmission-connected to the airflow guide (5), and the driving member (6) is used to drive the airflow guide (5) to move relative to the reinforcement (4).

6. The fan system according to claim 5, characterized in that: The airflow guide (5) is rotatably connected to the reinforcement (4).

7. The fan system according to claim 1, characterized in that: The reinforcement member (4) is provided with a plurality of noise reduction holes (41).

8. The fan system according to claim 1, characterized in that: The motor bracket (3) comprises a fixing ring (31) and a plurality of connecting brackets (32), wherein the fixing ring (31) is used to fix the motor, and the plurality of connecting brackets (32) are arranged at intervals along the circumferential direction of the fixing ring (31), and the connecting brackets (32) are respectively connected to the fixing ring (31) and the fan housing (1); The reinforcing member (4) is connected to a plurality of the connecting brackets (32); and / or the reinforcing member (4) is connected to the fixing ring (31).

9. The fan system according to claim 8, characterized in that: The reinforcing member (4) comprises a plurality of reinforcing plates (42). Along the circumferential direction of the fixing ring (31), the plurality of reinforcing plates (42) and the plurality of connecting brackets (32) are sequentially arranged at intervals, and each of the reinforcing plates (42) is clamped with two adjacent connecting brackets (32).

10. The fan system according to claim 9, characterized in that: The fan system comprises a plurality of airflow guides (5), and the plurality of airflow guides (5) are arranged on the plurality of reinforcement plates (42) in a one-to-one correspondence.

11. The fan system according to claim 1, characterized in that: The reinforcement member (4) is integrally formed; or, the reinforcement member (4) and the motor bracket (3) are integrally formed.

12. The fan system according to any one of claims 1 to 11, characterized in that: The fan system further comprises a connecting member (8) connected to the rotating shaft of the motor, one of the impeller frame (21) of the impeller (2) and the connecting member (8) is provided with a plurality of expansion protrusions (211), the other of the impeller frame (21) of the impeller (2) and the connecting member (8) is provided with a slot (81), the plurality of expansion protrusions (211) are all inserted into the slot (81), and each of the expansion protrusions (211) is elastically pressed against the side wall of the slot (81).

13. A range hood, characterized in that: The range hood comprises the fan system according to any one of claims 1 to 12, the range hood further comprising a main chassis (20), the fan system is arranged in the main chassis (20), and the fan housing (1) is connected to the main chassis (20).

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