Fan assembly and range hood

Abstract

The utility model provides a fan assembly and a range hood, and relates to the technical field of range hoods. The fan assembly comprises a fan and a tongue wrapping piece. A volute tongue is arranged at an air outlet of the fan, the tongue wrapping piece is arranged on the side, located in the fan, of the volute tongue, and the side, away from the volute tongue, of the tongue wrapping piece protrudes in the direction away from the volute tongue, so that the vertical projection, on the air outlet of the fan, of the side of the tongue wrapping piece is located on the inner side of the air outlet. According to the fan assembly, large-size and high-energy vortexes formed by oil fume at the air outlet of the fan can be blocked and damaged through the tongue wrapping piece, so that airflow is dispersed into small vortexes which are small in size and easy to dissipate, the problem of noise or flutter caused by too large vortex energy and too large size is effectively avoided, and the purpose of reducing noise of the range hood is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a range hood technical field especially a fan assembly and range hood. BACKGROUND

[0002] The current range hood usually includes a main machine shell, a fan and an air outlet seat, the fan is installed in the main machine shell, the air outlet seat is installed on the top plate of the main machine shell, and the air inlet of the air outlet seat is communicated with the air outlet of the fan through the through hole on the top plate of the main machine shell. In order to ensure that the oil fume in the fan can flow to the outlet of the fan smoothly, one side of the air outlet of the fan is usually provided with a volute tongue for shunting the oil fume and preventing the oil fume from circulating in the volute of the fan.

[0003] However, when the flue gas reaches the connection between the fan and the air outlet seat, the change of flow area will cause the flue gas to flow in a large vortex state at this position, and the large vortex energy is high and not easy to dissipate in the flow, thereby easily leading to large noise of the range hood, and even causing vibration and other adverse phenomena. SUMMARY

[0004] The utility model discloses a fan assembly and range hood to alleviate the technical problem that when the flue gas in the range hood reaches the connection between the fan and the air outlet seat, the change of flow area will cause the flue gas to flow in a large vortex state at this position, and the large vortex energy is high and not easy to dissipate in the flow, thereby easily leading to large noise of the range hood, and even causing vibration and other adverse phenomena.

[0005] In a first aspect, the utility model provides a fan assembly, which comprises a fan and a tongue covering piece.

[0006] The air outlet of the fan is provided with a volute tongue, the tongue covering piece is arranged on one side of the volute tongue inside the fan, and the side of the tongue covering piece away from the volute tongue protrudes towards the direction away from the volute tongue, so that the vertical projection of the side of the tongue covering piece on the air outlet of the fan is located on the inner side of the air outlet.

[0007] In an optional embodiment, the side of the tongue covering piece away from the volute tongue is provided with a recessed part, the two sides of the recessed part are formed with wind blocking parts, and the vertical projection of the wind blocking parts on the air outlet of the fan is located on the inner side of the air outlet.

[0008] In an optional embodiment, the bottom of the recessed part is located at the middle of the side of the tongue covering piece away from the volute tongue.

[0009] In an optional embodiment, the side of the tongue covering piece close to the volute tongue is curved, and the side of the tongue covering piece close to the volute tongue is fitted with the side of the volute tongue inside the fan.

[0010] In an optional embodiment, an air outlet seat with an air outlet channel is further included, the air outlet seat is fixed at the air outlet of the fan, and the air outlet channel is in communication with the air outlet of the fan.

[0011] The side of the air outlet seat close to the volute tongue is a first side, the first side is an arc surface protruding towards the outside of the air outlet seat, and the side of the air outlet connected with the first side is an arc surface matched with the first side.

[0012] In an optional embodiment, the side of the volute tongue away from the volute tongue is smoothly connected with the first side of the air outlet seat.

[0013] In an optional embodiment, the volute tongue is fixedly connected with the fan, and / or the volute tongue is fixedly connected with the air outlet seat.

[0014] In an optional embodiment, the side of the air outlet seat opposite to the first side is a second side, the second side is an arc surface recessed towards the inside of the air outlet seat.

[0015] In an optional embodiment, the air outlet of the fan is arranged to be relatively inclined to the horizontal plane, the air outlet seat comprises an inlet and an outlet, and the outlet of the air outlet seat is arranged to be relatively inclined to the inlet so that the outlet of the air outlet seat is located at the horizontal plane.

[0016] In a second aspect, the utility model provides a kind of range hood, including shell and the fan assembly of any one of preceding embodiment, and shell is equipped with through port, and the fan in fan assembly is installed in the inside of shell and the air outlet of fan is communicated with the through port on shell.

[0017] The fan assembly provided by the utility model comprises a fan and a volute tongue. The fan is provided with a volute tongue at an air outlet thereof. The volute tongue is arranged on one side of the fan inside the volute tongue. The side of the volute tongue away from the volute tongue protrudes towards the direction away from the volute tongue. The vertical projection of the side of the volute tongue on the air outlet of the fan is located on the inner side of the air outlet. The fan assembly provided by the utility model can be used in a range hood. When the range hood is started, the fan drives the oil fume to flow from the inside of the fan to the air outlet thereof. When the oil fume flows through the volute tongue and reaches the air outlet of the fan, the side of the volute tongue away from the volute tongue protrudes towards the direction away from the volute tongue, and the vertical projection of the protruding side of the volute tongue on the air outlet of the fan is located on the inner side of the air outlet. Therefore, the volute tongue can play the role of the volute tongue at this time, that is, the oil fume is divided, and the oil fume is prevented from circulating in the volute of the fan. In addition, the volute tongue can also block and destroy the large volume and high energy vortex generated due to the change of flow area at the air outlet of the fan at this time, so that the vortex is dispersed into small vortexes with small volume and easy to dissipate. Since the small vortexes are easy to dissipate gradually in the process of flowing of the oil fume, the fan assembly can effectively avoid the noise or vibration problem caused by the large energy and large volume of the vortex, so as to achieve the purpose of noise reduction of the range hood.

[0018] Compared with the prior art, the fan assembly provided by the utility model can block and destroy the large volume and high energy vortex formed by the oil fume at the fan air outlet, so that the airflow is dispersed into small vortexes with small volume and easy dissipation, thereby effectively avoiding the noise or vibration caused by the too large vortex energy and volume, and realizing the purpose of noise reduction of the oil fume machine.

[0019] The oil fume machine provided by the utility model comprises a shell and the fan assembly, a through opening is arranged on the shell, and the fan in the fan assembly is installed in the interior of the shell and the fan air outlet is communicated with the through opening on the shell. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0021] Figure 1 The structural schematic view of the fan assembly provided by the utility model embodiment is shown in the figure.

[0022] Figure 2 The internal structural schematic view of the fan assembly provided by the utility model embodiment is shown in the figure.

[0023] Figure 3 The structural schematic view of the fan air outlet seat and the tongue covering piece provided by the utility model embodiment is shown in the figure.

[0024] Figure 4 The structural schematic view of the fan air outlet seat provided by the utility model embodiment is shown in the figure.

[0025] Figure 5 The front view of the fan air outlet seat provided by the utility model embodiment is shown in the figure.

[0026] Figure 6 The bottom view of the fan air outlet seat provided by the utility model embodiment is shown in the figure.

[0027] Figure 7 The front view of the oil fume machine provided by the utility model embodiment is shown in the figure.

[0028] Figure 8 The structural schematic view of the oil fume machine provided by the utility model embodiment is shown in the figure.

[0029] Icon: 1 - fan; 10 - volute tongue; 11 - volute; 12 - impeller; 2 - tongue cover; 20 - recess; 21 - wind blocking part; 3 - air outlet seat; 30 - first side; 31 - second side; 32 - seat body; 33 - bottom plate; 4 - shell; 40 - top plate. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0032] The following will be a detailed description of some embodiments of the present application in conjunction with the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] Embodiment:

[0034] As shown in Figure 1 , Figure 2 and Figure 3 , the fan assembly provided by the present embodiment includes a fan 1 and a tongue cover 2. The fan 1 is provided with a volute tongue 10 at the air outlet thereof, and the tongue cover 2 is arranged at one side of the volute tongue 10 inside the fan 1, and the side of the tongue cover 2 away from the volute tongue 10 protrudes towards the direction away from the volute tongue 10, so that the vertical projection of the side of the tongue cover 2 on the air outlet of the fan 1 is located on the inner side of the air outlet.

[0035] The fan assembly provided by the present embodiment is used in an oil smoke exhauster. The fan 1 can be a centrifugal fan 1, which generally includes a volute 11 and an impeller 12 installed in the volute 11. The air outlet of the fan 1 is arranged on the volute 11. When the oil smoke exhauster is started, the impeller 12 of the fan 1 will throw out the oil smoke, so that the oil smoke moves along the volute 11 in an arc line, thereby driving the oil smoke to the air outlet of the fan 1.

[0036] When the fumes flow through the tongue 2 and reach the outlet of the fan 1, the side of the tongue 2 away from the volute 10 protrudes in a direction away from the volute 10, and the vertical projection of the protruding side of the tongue 2 onto the outlet of the fan 1 is located inside the outlet. Therefore, the tongue 2 can function as the volute 10, that is, to divert the fumes and prevent them from circulating within the volute 11 of the fan 1. In addition, the tongue 2 can also block and disrupt the large-volume, high-energy vortices generated at the outlet of the fan 1 due to changes in the flow area, dispersing these vortices into smaller, easily dissipated vortices. Since these smaller vortices are easily dissipated during the flow of fumes, the fan assembly can effectively avoid noise or vibration problems caused by excessive vortex energy and volume, thereby achieving the noise reduction purpose of the range hood.

[0037] Compared with the prior art, the fan assembly provided in this embodiment can block and destroy the large-volume, high-energy vortex formed by the swirling tongue 2 at the air outlet of the fan 1, so that the airflow is dispersed into small vortices that are small in volume and easy to dissipate, thereby effectively avoiding noise or vibration problems caused by excessive vortex energy and volume, and achieving the purpose of noise reduction of the range hood.

[0038] like Figure 3 As shown, the side of the tongue member 2 away from the volute tongue 10 is provided with a recess 20, and windproof parts 21 are formed on both sides of the recess 20. The vertical projection of the windproof parts 21 on the air outlet of the fan 1 is located inside the air outlet.

[0039] The windbreak part 21 is used to block the large-volume, high-energy vortex at the air outlet of the fan 1.

[0040] It should be noted that the volute 11 of the fan 1 typically includes two walls that are opposite each other and perpendicular to the central axis of the impeller 12. The wind-blocking portions 21 formed on both sides of the recess 20 are respectively close to the two walls of the volute 11 of the fan 1. Since the aforementioned large-volume, high-energy vortex usually occurs near the two walls of the volute 11 of the fan 1, forming wind-blocking portions 21 only on both sides of the recess 20 of the tongue member 2 is sufficient to achieve the blocking effect of the tongue member 2 on the vortex. At this time, the recess 20 will not affect the performance of the tongue member 2. Furthermore, the recess 20 also facilitates the passage of the oil fume airflow thrown out by the impeller 12, thereby preventing the tongue member 2 from creating a large obstruction to the flow of oil fumes and affecting the oil fume exhaust process.

[0041] Furthermore, the bottom of the recess 20 is located in the middle of the side of the tongue 2 away from the worm tongue 10.

[0042] The bottom of the recess 20 is located at the middle of the side of the tongue cover 2 away from the volute tongue 10, which can make the distribution of the recess 20 and the wind blocking part 21 more reasonable, so as to make the recess 20 give the maximum position to the oil fume flow thrown by the impeller 12, and make the wind blocking part 21 block the vortex effectively.

[0043] In order to improve the smoothness of the oil fume flow, as shown in Figure 2 and Figure 3 , the surface of the recess 20 is preferably curved.

[0044] Further, the connection between the recess 20 and the wind blocking part 21 can be smoothly connected.

[0045] As shown in Figure 3 , the side of the tongue cover 2 close to the volute tongue 10 is curved, and the side of the tongue cover 2 close to the volute tongue 10 is fitted with the side of the volute tongue 10 inside the fan 1. This arrangement makes the tongue cover 2 and the volute tongue 10 seamless, thereby preventing noise caused by air flow entering between the tongue cover 2 and the volute tongue 10.

[0046] As shown in Figures 1-6 , the fan assembly provided by the embodiment further comprises an air outlet seat 3 with an air outlet channel inside, the air outlet seat 3 is fixed at the air outlet of the fan 1, and the air outlet channel is in communication with the air outlet of the fan 1, as shown in Figure 5 , the side close to the volute tongue 10 of the air outlet seat 3 is a first side 30, the first side 30 is an arc surface protruding towards the outside of the air outlet seat 3, and as shown in Figure 6 , the side of the air outlet connected with the first side 30 is an arc shape matched with the first side 30.

[0047] Unlike the existing air outlet seat 3, the first side 30 of the air outlet seat 3 in the embodiment is an arc surface protruding towards the outside of the air outlet seat 3, which can effectively increase the flow area of the air flow and guide the air flow, so that the air flow flows more smoothly at the air outlet of the fan 1, which helps to reduce noise.

[0048] And the side of the air outlet connected with the first side 30 is an arc shape matched with the first side 30, which can effectively expand the area of the air outlet of the fan 1, and make the connection between the air outlet of the fan 1 and the air outlet seat 3 more smooth, thereby effectively improving the change of the flow area between the air outlet of the fan 1 and the air outlet seat 3, reducing the occurrence of large volume and high energy vortex, and reducing the energy loss of the air flow at the air outlet of the fan 1, improving the oil fume exhaust effect.

[0049] In the embodiment, the side of the tongue cover 2 away from the volute tongue 10 is smoothly connected with the first side 30 of the air outlet seat 3.

[0050] The connection mode of the smooth transition connection can improve the flow guiding effect of the gasket 2 and the air outlet seat 3 on the airflow, so that the airflow passing through the gasket 2 is easy to flow along the first side surface 30 and then be discharged, reducing airflow impact and further improving the noise reduction effect.

[0051] In the embodiment, the gasket 2 is fixedly connected with the fan 1, or as shown in the figure, the gasket 2 is fixedly connected with the air outlet seat 3. Alternatively, the fan 1 and the air outlet seat 3 are both fixedly connected with the gasket 2. Figure 3

[0052] The above-mentioned fixed connection can be realized by welding, clamping and the like, or by fasteners such as screws. In order to ensure the structural stability of the gasket 2, the above-mentioned fixed connection is preferably realized by an integral molding method. Specifically, when the gasket 2 is fixedly connected with the fan 1, the gasket 2 and the fan 1 are integrally molded; when the gasket 2 is fixedly connected with the air outlet seat 3, the gasket 2 and the air outlet seat 3 are integrally molded; and when the fan 1 and the air outlet seat 3 are both fixedly connected with the gasket 2, the air outlet seat 3, the gasket 2 and the fan 1 are integrally molded.

[0053] It should be noted that, as shown in the figure, when the gasket 2 is fixedly connected with the air outlet seat 3, the gasket 2 needs to be fixed to the outside of the air outlet channel of the air outlet seat 3. Thus, when the air outlet seat 3 is fixed to the air outlet of the fan 1, the gasket 2 extends into the inside of the fan 1 and is located on one side of the volute tongue 10. Figure 3

[0054] As shown in the figures, Figure 3 , Figure 4 and Figure 5 , the side surface of the air outlet seat 3 opposite to the position of the first side surface 30 is a second side surface 31, and the second side surface 31 is an arc surface recessed towards the inside of the air outlet seat 3.

[0055] The second side surface 31 being an arc surface recessed towards the inside of the air outlet seat 3 can make the shape of the air outlet seat 3 more suitable for the airflow flow state, further effectively improve the change of the flow area between the air outlet of the fan 1 and the air outlet seat 3, reduce the occurrence of large volume and high energy vortexes and reduce airflow impact, thereby improving the noise reduction effect.

[0056] As shown in the figure, Figure 2 , the air outlet of the fan 1 is arranged relatively inclined to the horizontal plane, the air outlet seat 3 includes an inlet and an outlet, and the outlet of the air outlet seat 3 is arranged relatively inclined to the inlet so that the outlet of the air outlet seat 3 is located on the horizontal plane.

[0057] Since the fan 1 is installed in the housing 4 of the range hood, as shown in the figure, Figure 7 ​​As shown, the air outlet of the fan 1 is usually inclined relative to the horizontal plane. Therefore, in order to ensure that the outlet of the air outlet seat 3 is located on the horizontal plane after it is installed at the air outlet of the fan 1, the outlet and inlet of the air outlet seat 3 also need to be inclined relative to each other.

[0058] Specifically, such as Figure 7 As shown, the angle of inclination between the air outlet of fan 1 and the horizontal plane is denoted as α. Figure 5 As shown, let β be the angle of inclination between the outlet and the inlet of the air outlet seat 3. Then α equals β, and the air outlet of the fan 1 is inclined downward relative to the horizontal surface, while the outlet of the air outlet seat 3 is inclined upward relative to the inlet.

[0059] There is no restriction on the angle of inclination between the outlet and inlet of the air outlet seat 3, as long as it is equal to the angle of inclination between the outlet of the fan 1 and the horizontal plane, and the outlet of the air outlet seat 3 is located on the horizontal plane. For example, the angle of inclination between the outlet of the fan 1 and the horizontal plane can be 10 degrees, and the angle of inclination between the outlet and inlet of the air outlet seat 3 is also 10 degrees.

[0060] To improve the installation stability of the air outlet bracket 3 at the air outlet of the fan 1, such as Figure 3 , Figure 4 and Figure 5 As shown, the air outlet seat 3 may include a seat body 32 and a base plate 33. The seat body 32 is tubular, and the base plate 33 has a through hole. The seat body 32 is fixed on the base plate 33, and the internal space of the seat body 32 is connected to the through hole on the base plate 33 to form the air outlet channel of the air outlet seat 3.

[0061] When the air outlet seat 3 is installed at the air outlet of the fan 1, the seat body 32 of the air outlet seat 3 can be fixedly connected to the fan 1.

[0062] In addition, such as Figure 3 As shown, when the flap 2 is fixed on the air outlet seat 3, the flap 2 can be fixed on the side of the base plate 33 that is opposite to the seat body 32.

[0063] When both the fan 1 and the air outlet seat 3 are installed on the range hood, such as Figure 7 and Figure 8 As shown, the range hood housing 4 includes a top plate 40 with perforations; the bottom plate 33 of the air outlet seat 3 is fixed above the top plate 40 of the housing 4 and the perforations on the bottom plate 33 are connected to the perforations on the top plate 40; the fan 1 is fixed below the top plate 40 and the air outlet of the fan 1 is connected to the perforations on the top plate 40.

[0064] like Figure 7 and Figure 8As shown, the embodiment also provides a range hood, which comprises the shell 4 and the above-mentioned fan assembly. The shell 4 is provided with a through opening. The fan 1 in the fan assembly is installed inside the shell 4, and the air outlet of the fan 1 is in communication with the through opening on the shell 4. As mentioned above, the shell 4 comprises the top plate 40. The fan 1 and the air outlet seat 3 are fixed below and above the top plate 40 respectively. The air outlet of the fan 1, the perforation on the top plate 40 and the air outlet passage of the air outlet seat 3 are in communication in sequence.

[0065] Since the range hood provided by the embodiment comprises the above-mentioned fan assembly, the range hood and the fan assembly can solve the same technical problems and achieve the same technical effects. Therefore, no further description is given here.

[0066] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fan assembly comprising: The fan (1) and the tongue covering member (2) are included. The fan (1) is provided with a volute tongue (10) at the air outlet, the tongue covering member (2) is arranged at one side of the volute tongue (10) inside the fan (1), and the side of the tongue covering member (2) away from the volute tongue (10) protrudes towards the direction away from the volute tongue (10), so that the vertical projection of the side of the tongue covering member (2) on the air outlet of the fan (1) is located inside the air outlet.

2. The fan assembly of claim 1, wherein, The side of the tongue covering member (2) away from the volute tongue (10) is provided with a recess (20), and the two sides of the recess (20) are formed with wind blocking parts (21), and the vertical projection of the wind blocking parts (21) on the air outlet of the fan (1) is located inside the air outlet.

3. The fan assembly of claim 2, wherein, The bottom of the recess (20) is located at the middle of the side of the tongue covering member (2) away from the volute tongue (10).

4. The fan assembly of claim 1, wherein, The side of the tongue covering member (2) close to the volute tongue (10) is curved, and the side of the tongue covering member (2) close to the volute tongue (10) is fitted with the side of the volute tongue (10) inside the fan (1).

5. The fan assembly of any one of claims 1-4, wherein, The air outlet seat (3) is further included, which is internally provided with an air outlet channel, and the air outlet seat (3) is fixed at the air outlet of the fan (1), and the air outlet channel is communicated with the air outlet of the fan (1). The side of the air outlet seat (3) close to the volute tongue (10) is a first side (30), which is an arc surface protruding towards the outside of the air outlet seat (3), and the side edge of the air outlet connected with the first side (30) is an arc shape matched with the first side (30).

6. The fan assembly of claim 5, wherein, The side of the tongue covering member (2) away from the volute tongue (10) is smoothly connected with the first side (30) of the air outlet seat (3).

7. The fan assembly of claim 5, wherein, The tongue covering member (2) is fixedly connected with the fan (1), and / or the tongue covering member (2) is fixedly connected with the air outlet seat (3).

8. The fan assembly of claim 5, wherein, The side of the air outlet seat (3) opposite to the first side (30) is a second side (31), which is an arc surface recessed towards the inside of the air outlet seat (3).

9. The fan assembly of claim 5, wherein, The air outlet of the fan (1) is relatively inclined to the horizontal plane, the air outlet seat (3) includes an inlet and an outlet, and the outlet of the air outlet seat (3) is relatively inclined to the inlet, so that the outlet of the air outlet seat (3) is located on the horizontal plane.

10. A range hood characterized by The shell (4) and the fan assembly of any one of claims 1-9 are included, the shell (4) is provided with a through opening, the fan (1) in the fan assembly is installed inside the shell (4), and the air outlet of the fan (1) is communicated with the through opening on the shell (4).

Images