Fan module and air conditioner

Abstract

The utility model discloses a fan module and an air conditioner in the technical field of ventilation devices. The centrifugal fan comprises a centrifugal fan, a fan base, an air inlet flow guide ring and an air guide volute, an air outlet is formed in one side of the fan base, the centrifugal fan is borne in the fan base, a flow guide hole is formed in the middle of the air inlet flow guide ring, an air inlet is formed in the end of the air guide volute, and a plurality of flow guide structures are arranged on the air guide volute. The flow guide structure comprises a first flow guide plate and a second flow guide plate which are perpendicular to each other, the extending direction of the first flow guide plate is consistent with the airflow direction of the air inlet, and the second flow guide plate is connected to the side, away from the air inlet, of the first flow guide plate and extends towards the side close to the centrifugal fan; the plurality of second guide plates are distributed at equal intervals relative to the air inlet area of the centrifugal fan; the multiple first flow guide plates are evenly distributed relative to the air inlet. According to the fan module, the flow guide structure is additionally arranged on the air guide volute, so that the inlet air flow of the fan module is more stable, the overall inlet air flow velocity is balanced, and meanwhile, the noise can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation devices, in particular to a fan module and an air conditioner. Background Art

[0002] In the fresh air system of the air conditioner, the air duct is used to directly guide the airflow into the centrifugal fan during design. Specifically, the fan module at least includes a centrifugal fan, a fan base, an air inlet guide ring and an air guide volute. An air outlet is arranged on one side of the fan base, and an air inlet is arranged at the end of the air guide volute. The fan base is used to carry the centrifugal fan. The air inlet guide ring is located between the air guide volute and the fan base, and a guide hole is arranged in the middle thereof, and the guide hole coincides with the central axis of the centrifugal fan. The airflow enters the fan module from the air inlet, moves toward the air intake area of ​​the centrifugal fan, and specifically flows out of the fan module through the guide hole, the centrifugal fan and the air outlet. Although the method of directly introducing the airflow into the centrifugal fan is more convenient to implement, the airflow is uneven when entering the fan, which is internally manifested as the noise of the fresh air intake airflow and the turbulence of the outlet airflow, and externally manifested as noise problems and unstable outlet airflow. Utility Model Content

[0003] In order to overcome the problem of airflow noise caused by uneven airflow after the airflow of the existing fan module enters the fan from the air duct, the utility model provides a fan module and an air conditioner.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] The fan module comprises a centrifugal fan, a fan base, an air inlet guide ring and an air guide volute. An air outlet is arranged on one side of the fan base. The centrifugal fan is carried in the fan base. The air inlet guide ring is located between the air guide volute and the fan base. A guide hole is arranged in the middle of the air inlet guide ring. The guide hole coincides with the central axis of the centrifugal fan. An air inlet is arranged at the end of the air guide volute. A plurality of guide structures are arranged on the air guide volute. The guide structures comprise a first guide plate and a second guide plate which are perpendicular to each other. The extension direction of the first guide plate is consistent with the air flow direction of the air inlet. The second guide plate is connected to the side of the first guide plate away from the air inlet and extends to the side close to the centrifugal fan. The plurality of second guide plates are equally spaced relative to the air inlet area of ​​the centrifugal fan. The plurality of first guide plates are evenly distributed relative to the air inlet.

[0006] In the present application, by adding a guide structure to the air guide volute, the air intake airflow of the fan module is made smoother, the overall air intake airflow velocity is balanced, and the noise can also be reduced. Specifically, the guide structure includes a first guide plate and a second guide plate that are perpendicular to each other. The first guide plate is used to divide the air intake airflow, and the second guide plate is used to guide the divided airflow to the air intake area of ​​the centrifugal fan. Furthermore, the second guide plates are evenly spaced relative to the air intake area of ​​the centrifugal fan; the first guide plates are evenly distributed relative to the air intake to balance the air intake airflow.

[0007] In some embodiments, the guide structure farthest from the air inlet is the outermost guide structure, and the outermost guide structure has the side wall of the air guide volute as the first guide plate; except for the first guide plate of the outermost guide structure, all the first guide plates and the second guide plates are arranged perpendicular to the inner wall of the air guide volute.

[0008] In this embodiment, the outermost guide structure uses the side wall of the air guide volute as the first guide plate, which has a simple structure and is easy to implement, and also helps to divert and guide all incoming airflow; except for the first guide plate of the outermost guide structure, the first guide plate and the second guide plate are both arranged perpendicular to the inner wall of the air guide volute, which has a simple structure, is easy to implement and effectively guides the air.

[0009] In some embodiments, the air inlet is a circular opening, and a plurality of first guide plates divide the diameter of the air inlet into equal parts perpendicular to the air flow direction of the air inlet.

[0010] In this embodiment, the air inlet is a circular opening, and a plurality of first guide plates divide the diameter of the air inlet equidistantly. Obviously, when the number of the first guide plates is two, it is divided into two identical areas; when the number of the first guide plates is greater than two, as implemented above, for the circular hole, the air intake volume of the middle airflow is larger, and for the centrifugal fan, the air flow in the middle is large, which is beneficial to the overall stability of the airflow, and the two side areas serve as edge airflow to supplement and stabilize the integrity of the air intake.

[0011] In some embodiments, the air inlet is a circular opening, and a plurality of first guide plates divide the air inlet into equal areas in a direction perpendicular to the air flow direction of the air inlet.

[0012] In this embodiment, the air inlet is a circular opening, and a plurality of first guide plates divide the air inlet into equal areas. At this time, the air intake is completely balanced, which can ensure that the fan air intake volume is balanced and the noise and air outlet are balanced at the optimal value.

[0013] In some embodiments, the air inlet is a rectangular opening, and a plurality of first guide plates divide the air inlet into equal areas in a direction perpendicular to the air flow direction of the air inlet.

[0014] In this embodiment, the air inlet is a rectangular opening, and a plurality of first guide plates divide the air inlet into equal areas. At this time, the air intake is completely balanced, which can ensure that the fan air intake volume is balanced and the noise and air outlet are balanced at the optimal value.

[0015] In some embodiments, a plurality of guide ribs are provided on the guide structure.

[0016] In this embodiment, by adding guide ribs, eddy currents and turbulence are further reduced, thereby ensuring the stability of gas flow.

[0017] In some embodiments, the guide ribs are flat-plate shaped, and are arranged parallel to the inner wall of the air guide volute. In the height direction of the first guide plate and the second guide plate, multiple guide ribs are equidistantly distributed.

[0018] In this embodiment, the guide ribs are in the form of a flat plate. Alternatively, they may be in the form of a streamlined type or a concave-convex spherical type. Further, when the guide ribs are implemented as a flat plate as above, the guide ribs are preferably distributed equidistantly in the height direction of the guide structure to achieve a balanced flow diversion effect and further reduce the generation of eddies.

[0019] In some embodiments, the first guide plate and the second guide plate are connected by a transition of an inclined surface or an arc surface.

[0020] In this embodiment, the above is implemented to smoothly guide the change of airflow direction, reduce resistance, prevent turbulence, and reduce potential noise.

[0021] In some embodiments, a split guide structure is provided on the side of the air inlet guide ring close to the air inlet, the extension direction of the split guide structure is consistent with the air flow direction of the air inlet, and multiple second guide plates are extended to align with the split guide structure on the air inlet guide ring.

[0022] In this embodiment, the extension positions of the plurality of second guide plates correspond to each other, and specifically all extend to be aligned with the split guide structure, thereby stably guiding the airflow to the air intake area of ​​the centrifugal fan.

[0023] The utility model also provides an air conditioner, comprising the fan module in any one of the above embodiments.

[0024] The beneficial effects of the utility model are as follows: by designing an air guide volute with a guide structure, which specifically includes diversion and guide functions, the intake airflow of the fan module is made smoother, and the overall intake airflow velocity is balanced; and the guide structure effectively balances the consistency between the air outlet speed and the air intake speed of the fan module, so that the airflow will not generate too many airflow vortices in the air guide volute, which can further reduce noise and improve user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The overall structure of the fan module provided by the utility model is shown in FIG. Figure 1 ;

[0026] Figure 2 An exploded view of the fan module provided by the utility model;

[0027] Figure 3 The structure diagram of the wind guide volute in the fan module provided by the utility model Figure 1 ;

[0028] Figure 4 The structure diagram of the wind guide volute in the fan module provided by the utility model Figure 2 ;

[0029] Figure 5 The overall structure of the fan module provided by the utility model is shown in FIG. Figure 2

[0030] Figure 6 for Figure 5 A partial enlarged view of

[0031] Figure 7 This is a schematic diagram of the overall structure of the fan module provided by the utility model after removing the air guide volute and the filter bracket.

[0032] Marked in the figure are, 1-fan base, 2-filter bracket, 3-air inlet guide ring, 4-air guide volute, 5-air inlet, 6-centrifugal fan, 7-guide hole, 8-first guide plate, 9-second guide plate, 10-guide rib, 11-dividing guide structure. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the accompanying drawings.

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] like Figure 1-Figure 7 As shown, the utility model provides a fan module.

[0036] Combination Figure 1 and Figure 2 As shown, the fan module includes a centrifugal fan 6, a fan base 1, an air inlet guide ring 3, a filter bracket 2 and an air guide volute 4. An air outlet is arranged on one side of the fan base 1. The centrifugal fan 6 is carried in the fan base 1. The air inlet guide ring 3 is located between the air guide volute 4 and the fan base 1. A guide hole 7 is arranged in the middle of the air inlet guide ring 3. The guide hole 7 coincides with the central axis of the centrifugal fan 6. An air inlet 5 is arranged at the end of the air guide volute 4. The filter bracket 2 is installed between the air inlet guide ring 3 and the air guide volute 4.

[0037] like Figure 3 and Figure 4 As shown, a plurality of guide structures are arranged on the air guide volute 4, and the guide structures include a first guide plate 8 and a second guide plate 9 which are perpendicular to each other. The extension direction of the first guide plate 8 is consistent with the air flow direction of the air inlet 5. The second guide plate 9 is connected to the side of the first guide plate 8 away from the air inlet 5 and extends toward the side close to the centrifugal fan 6. The plurality of second guide plates 9 are evenly distributed relative to the air inlet area of ​​the centrifugal fan 6. The plurality of first guide plates 8 are evenly distributed relative to the air inlet 5.

[0038] In the present application, by adding a guide structure to the air guide volute 4, the air intake airflow of the fan module is made smoother, the overall air intake airflow velocity is balanced, and the noise can also be reduced. Specifically, the guide structure includes a first guide plate 8 and a second guide plate 9 that are perpendicular to each other. The first guide plate 8 is used to divide the airflow at the air inlet 5, and the second guide plate 9 is used to guide the divided airflow to the air intake area of ​​the centrifugal fan 6. Furthermore, the second guide plates 9 are evenly spaced relative to the air intake area of ​​the centrifugal fan 6, and the first guide plates 8 are evenly distributed relative to the air inlet 5 to balance the air intake airflow.

[0039] Obviously, the air intake area of ​​the centrifugal fan 6 here is determined according to the structure of the centrifugal fan 6, the air intake guide ring 3 and the air guide volute 4. The determination of the air intake area is well known to those skilled in the art. The focus here is that the second guide plate 9 is combined with the side wall of the aforementioned components close to the air inlet 5 to divide the air intake area into equal intervals.

[0040] In this embodiment, the guide structure farthest from the air inlet 5 is the outermost guide structure, and the outermost guide structure uses the side wall of the air guide volute 4 as the first guide plate 8; except for the first guide plate 8 of the outermost guide structure, all the first guide plates 8 and the second guide plates 9 are arranged perpendicular to the inner wall of the air guide volute 4. The outermost guide structure uses the side wall of the air guide volute 4 as the first guide plate 8, which is simple in structure and easy to implement, and also helps to divert and guide all the incoming airflow; except for the first guide plate 8 of the outermost guide structure, the first guide plate 8 and the second guide plate 9 are arranged perpendicular to the inner wall of the air guide volute 4, which is simple in structure, easy to implement and effective in guiding.

[0041] Combined with the aforementioned equal spacing of the second guide plates 9 relative to the air intake area of ​​the centrifugal fan 6, the projection of the straight line where the second guide plates 9 of the outermost guide structure extend on the plane where the guide holes 7 are located is preferably tangent to the guide holes 7. This is used to determine the position of the second guide plates 9 in the outermost guide structure, and thus determine the position of the second guide plates 9 in other guide structures. Obviously, combined with Figure 7 As shown, in this embodiment, the position of the second guide plate 9 can actually be Figure 7The upper direction shown in FIG. 1 , that is, the direction away from the air inlet 5 is adjusted.

[0042] The above is the selection of the position of the second guide plate 9 to clarify the realization of the equal spacing division of the air intake area relative to the centrifugal fan 6. Next, the selection of the position of the first guide plate 8 is described in detail to further clarify the overall structural layout of the guide structure.

[0043] like Figure 5 and Figure 6 As shown, in this embodiment, the air inlet 5 is a circular opening, and in a direction perpendicular to the air flow direction of the air inlet 5, a plurality of first guide plates 8 divide the air inlet 5 into equal parts in diameter.

[0044] In combination with the above, the first guide plate 8 (excluding the first guide plate 8 of the outermost guide structure) is arranged perpendicular to the inner wall of the wind guide volute 4. In this embodiment, Figure 6 As shown, when there are three guide structures, it means that the positions of the two first guide plates 8 that can be seen facing the air inlet 5 correspond to the positions of the points that divide the diameter of the air inlet 5 into three equal parts. Obviously, the diameter of the air inlet 5 here refers to the diameter perpendicular to the first guide plates 8.

[0045] In this embodiment, the air inlet 5 is a circular opening, and a plurality of first guide plates 8 divide the diameter of the air inlet 5 equally. The number of first guide plates 8, that is, the number of guide structures, is preferably three based on the convenience of implementation and the size of the air inlet 5 in the fan module.

[0046] Alternatively, in some embodiments, when the number of the first guide plates 8 is two, it is divided into two identical areas; when the number of the first guide plates 8 is greater than two, it is implemented as above, and for the circular hole, the air intake volume of the middle airflow is larger, and for the centrifugal fan 6, the middle airflow volume is large, which is beneficial to the overall stability of the airflow, and the two side areas serve as edge airflow to supplement and stabilize the integrity of the air intake.

[0047] In some embodiments, the air inlet 5 is a circular opening. In a direction perpendicular to the air flow direction of the air inlet 5, multiple first guide plates 8 divide the air inlet 5 into equal areas. At this time, the air intake is completely balanced, which can ensure that the fan air intake volume is balanced and the noise and air outlet are balanced at the optimal value.

[0048] In some embodiments, the air inlet 5 is a rectangular opening. In a direction perpendicular to the air flow direction of the air inlet 5, multiple first guide plates 8 divide the air inlet 5 into equal areas. At this time, the air intake is completely balanced, which can ensure that the fan air intake volume is balanced and the noise and air outlet are balanced at the optimal value.

[0049] In this embodiment, a plurality of guide ribs 10 are provided on the guide structure to further reduce eddy currents and turbulence and ensure the stability of gas flow.

[0050] In this embodiment, the guide rib 10 is a flat plate type, and the guide rib 10 is arranged parallel to the inner wall of the wind guide volute 4. In the height direction of the first guide plate 8 and the second guide plate 9, a plurality of guide ribs 10 are equidistantly distributed. Alternatively, it also includes streamlined or concave-convex spherical forms. Further, when the guide rib 10 is implemented as a flat plate type as above, the guide rib 10 is preferably equidistantly distributed in the height direction of the guide structure to achieve a balanced diversion effect and further reduce the generation of vortices.

[0051] In this embodiment, the first guide plate 8 and the second guide plate 9 are connected by a transition of an inclined surface or an arc surface to smoothly guide the change of airflow direction, reduce resistance, prevent turbulence, and reduce potential noise.

[0052] In this embodiment, a split guide structure 11 is provided on one side of the air inlet guide ring 3 close to the air inlet 5, and the extending direction of the split guide structure 11 is consistent with the airflow direction of the air inlet 5, and the plurality of second guide plates 9 are all extended to be aligned with the split guide structure 11 on the air inlet guide ring 3. The extension positions of the plurality of second guide plates 9 correspond to each other, and specifically, they are all extended to be aligned with the split guide structure 11, so as to stably guide the airflow to the air inlet area of ​​the centrifugal fan 6.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan module, comprising a centrifugal fan (6), a fan base (1), an air inlet guide ring (3) and an air guide volute (4), wherein an air outlet is arranged on one side of the fan base (1), the centrifugal fan (6) is carried in the fan base (1), the air inlet guide ring (3) is located between the air guide volute (4) and the fan base (1), a guide hole (7) is arranged in the middle of the air inlet guide ring (3), the guide hole (7) and the central axis of the centrifugal fan (6) coincide, and an air inlet (5) is arranged at the end of the air guide volute (4), wherein: A plurality of flow guide structures are arranged on the inner wall of the air guide volute (4), the flow guide structures comprising a first flow guide plate (8) and a second flow guide plate (9) which are perpendicular to each other, the extension direction of the first flow guide plate (8) being consistent with the air flow direction of the air inlet (5), and the second flow guide plate (9) being connected to a side of the first flow guide plate (8) away from the air inlet (5) and extending towards a side close to the centrifugal fan (6); A plurality of second guide plates (9) are distributed at equal intervals relative to an air intake area of ​​the centrifugal fan (6); The plurality of first guide plates (8) are evenly distributed relative to the air inlet (5).

2. The fan module according to claim 1, characterized in that: The guide structure farthest from the air inlet (5) is the outermost guide structure, and the outermost guide structure uses the side wall of the air guide volute (4) as the first guide plate (8); except for the first guide plate (8) of the outermost guide structure, all the first guide plates (8) and the second guide plates (9) are arranged perpendicular to the inner wall of the air guide volute (4).

3. The fan module according to claim 2, characterized in that: The air inlet (5) is a circular opening, and a plurality of first guide plates (8) divide the diameter of the air inlet (5) into equal parts perpendicular to the air flow direction of the air inlet (5).

4. The fan module according to claim 2, characterized in that: The air inlet (5) is a circular opening, and a plurality of first guide plates (8) divide the air inlet (5) into equal areas in a direction perpendicular to the air flow direction of the air inlet (5).

5. The fan module according to claim 2, characterized in that: The air inlet (5) is a rectangular opening, and a plurality of first guide plates (8) divide the air inlet (5) into equal areas in a direction perpendicular to the air flow direction of the air inlet (5).

6. The fan module according to any one of claims 1 to 5, characterized in that: A plurality of flow guiding ribs (10) are arranged on the flow guiding structure.

7. The fan module according to claim 6, characterized in that: The guide ribs (10) are flat-plate shaped and are arranged parallel to the inner wall of the air guide volute (4). In the height direction of the first guide plate (8) and the second guide plate (9), a plurality of guide ribs (10) are distributed at equal distances.

8. The fan module according to claim 1, characterized in that: The first guide plate (8) and the second guide plate (9) are connected by transition through an inclined surface or an arc surface.

9. The fan module according to claim 1, characterized in that: A split flow guide structure (11) is provided on one side of the air inlet guide ring (3) close to the air inlet (5); the extension direction of the split flow guide structure (11) is consistent with the air flow direction of the air inlet (5); and the plurality of second flow guide plates (9) are all extended to align with the split flow guide structure (11) on the air inlet guide ring (3).

10. An air conditioner, characterized in that: It comprises a fan module as described in any one of claims 1 to 9.

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