RANGE HOODS AND VEHICLES

Description

TECHNICAL FIELD

The present application relates to the technical field of range hoods, and in particular, to a range hood and a vehicle.

BACKGROUND

A range hood is used to remove oil fumes. However, during the operation of the traditional range hood, reflux gas is generated in a box of the range hood and flow out from an air inlet of the box. When the reflux gas flows out from the air inlet, it produces loud noise, which compromises the user experience.

SUMMARY

The main purpose of the present application is to provide a range hood, aiming to at least reduce reflux gas as much as possible, so that the noise generated by the range hood is smaller during operation, thereby improving the user experience.

In order to achieve the above objective, the range hood proposed by the present application includes:

• • a box provided with an accommodation cavity, and an air inlet and an air outlet communicating with the accommodation cavity;
  • a fan at least partially housed in the accommodation cavity, the fan includes an impeller and a motor which is connected to and configured to drive the impeller, a projection of the impeller is within a projection of the air inlet in an axial direction of the impeller, and there is a gap between the projection of the impeller and the projection of the air inlet; and
  • a first baffle ring, wherein a projection of the first baffle ring covers the gap in the axial direction of the impeller.

In an embodiment, the impeller includes an impeller body which is connected to and driven by the motor and a second baffle ring connected to a peripheral edge of the impeller body, the second baffle ring extends along the axial direction of the impeller, the first baffle ring extends along a radial direction of the impeller, and an inner ring of the first baffle ring is connected to the second baffle ring.

In an embodiment, the first baffle ring has a side located opposite to the accommodation cavity which is connected in a smooth transition way to an inner ring of the second baffle ring.

In an embodiment, the inner ring of the first baffle ring extends to form a guide arc ring facing away and protruding beyond the motor, and the guide arch ring is connected to the second baffle ring.

In an embodiment, the first baffle ring is connected to the outer peripheral edge of the impeller, and the first baffle ring and the box define an air passage communicating with the gap.

In an embodiment, a depth of the air passage in the axial direction of the impeller ranges from 3 mm to 8 mm.

In an embodiment, the first baffle ring, the second baffle ring and the impeller are integrally formed.

In an embodiment, the box includes a box body provided with the accommodation cavity and the air outlet, and a first housing detachably connected to the box body, the first housing is provided with the air inlet, and the air inlet tapers toward the fan.

In an embodiment, the range hood also includes a motor bracket detachably connected to an outer surface of the box, the motor bracket extends from the air inlet into the accommodation cavity, and the motor is provided on the motor bracket.

In an embodiment, the motor bracket is locked to the box body through screws.

In an embodiment, an extending direction of the air inlet is different from an extending direction of the air outlet.

In an embodiment, the fan is configured as an axial flow fan.

The present application also proposes a vehicle, which includes the aforementioned range hood.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to describe the technical solutions in the embodiments of the present application or in the related art more clearly, the accompanying drawings required to be used in the description of the embodiments or the related art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a range hood according to an embodiment of the present application.

FIG. 2 is a three-dimensional cross-sectional view of the range hood in FIG. 1.

FIG. 3 is a cross-sectional view of the range hood from a perspective in FIG. 1.

FIG. 4 is a schematic structural diagram of the connection between an impeller, a first baffle ring and a second baffle ring in FIG. 1.

FIG. 5 is a three-dimensional cross-sectional view of the impeller, the first baffle ring and the second baffle ring in FIG. 4.

DESCRIPTION OF REFERENCE SIGNS

The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

DETAILED DESCRIPTION OF EMBODIMENTS

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some rather than all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

It should be noted that all directional indications (such as up, down, left, right, front, back . . . ) in the embodiment of the present application are only used to explain the relative positional relationship between components in a specific posture (as shown in the drawings), movement situation, etc. If the specific posture changes, the directional indications will also change accordingly.

In the present application, unless otherwise clearly stated and limited, the terms “connection”, “fixation”, etc. should be understood in a broad sense. For example, “connection” can be a fixed connection, a detachable connection, or an integral connection, can be a mechanical connection or an electrical connection; can be a direct connection or an indirect connection through an intermediate medium; or can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

In addition, if there are descriptions such as “first” or “second” in the embodiments of the present application, the descriptions such as “first” or “second” are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined with “first” and “second” can explicitly or implicitly include at least one of these features. In addition, the meaning of “and/or” appearing in the entire text includes three parallel solutions. Taking “A and/or B” as an example, it includes a solution A, or a solution B, or a solution that both A and B satisfy. In addition, the technical solutions in various embodiments can be combined with each other, but their combination must be based on what those skilled in the art can achieve. When the combination of the technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist, nor within the protection scope of the present application.

The range hood is used to remove oil fumes. However, during the operation of the traditional range hood, reflux gas will be generated in a box of the range hood and flow out from an air inlet of the box. When the reflux gas flows out from the air inlet, it will produce loud noise, which reduces the user experience. To this end, the present application proposes a range hood that aims to reduce the reflux gas as much as possible, so that the noise emitted by the range hood is smaller during operation, thereby improving user experience.

Referring to FIGS. 1 to 5, in an embodiment of the present application, the range hood 100 includes a box 300, a fan 400 and a first baffle ring 420.

The box 300 is provided with an accommodation cavity 330, and is also provided with an air inlet 340 and an air outlet 350 that communicate with the accommodation cavity 330.

The fan 400 is at least partially received in the accommodation cavity 330. The fan 400 includes an impeller 410 and a motor 450 which is connected to and configured to drive the impeller 410. In an axial direction of the impeller 410, a projection of the impeller 410 is within a projection of the air inlet 340, and there is a gap between the projection of the impeller 410 and the projection of the air inlet 340.

The first baffle ring 420 has a projection that covers the gap in the axial direction of the impeller 410.

In the technical solution of the present application, in the axial direction of the impeller 410, the projection of the impeller 410 is within the projection of the air inlet 340, and there is a gap between the projection of the impeller 410 and the projection of the air inlet 340. It can be understood that the reflux gas can flow out from the air inlet 340 along the axial direction of the impeller 410 through the gap. To this end, the first baffle ring 420 is provided. In the axial direction of the impeller 410, the projection of the first baffle ring 420 covers the gap, which can block the reflux gas, make it more difficult for the reflux gas to flow out from the air inlet 340 through the gap, suppress the formation of the reflux gas, and reduce the reflux gas. As a result, the noise generated by the range hood 100 is reduced during operation, thereby improving user experience. It is noted that the projection of the air inlet 340 is in a ring shape, and the projection of the impeller 410 is surrounded by the projection of the air inlet 340.

It should be noted that a non-solid arrow near the air inlet in FIG. 3 represents an air inlet direction, a non-solid arrow near the air outlet represents an air outlet direction, and a solid arrow represents a flow direction of the reflux gas.

Although the first baffle ring 420 causes the reflux gas to be reduced, some of the reflux gas may come into contact with the first baffle ring 420 and flow along a wall of the first baffle ring 420 toward an inner ring of the first baffle ring 420, thereby flowing toward the fan 400 under the action of the fan 400, causing the fan 400 to cut this reflux gas and causing noise. To this end, in an embodiment, the impeller 410 includes an impeller 410 body which is connected to and driven by the motor 450 and a second baffle ring 430 connected to a periphery of the impeller 410 body. The second baffle ring 430 extends along the axial direction of the impeller 410, the first baffle ring 420 extends along a radial direction of the impeller 410, and an inner ring of the first baffle ring 420 is connected to the second baffle ring 430. In this way, the reflux gas will flow along the wall of the first baffle ring 420 towards an outer ring of the first baffle ring 420 to prevent the reflux gas from flowing to the fan 400 under the suction of the fan 400. Thus, the reflux gas can be prevented from being cut by the fan 400 and the noise of the range hood 100 can be reduced during the operation, which improves the user experience.

It can be understood that the first baffle ring 420 and the second baffle ring 430 are connected into a whole body, which is annular. At this time, the whole body defines the air inlet 340 as a reflux gas channel 360 for the flow of the reflux gas and an air inlet channel 370 for the smoke to enter the accommodation cavity 330. The reflux gas channel 360 is outside the whole body, and the air inlet channel 370 is inside the whole body. In this way, the whole body is conducive to blocking the reflux gas from flowing from the reflux gas channel 360 to the air inlet channel 370, and preventing the reflux gas from being cut by the fan 400, thereby reducing the noise generated by the range hood 100 during operation.

In an embodiment, the impeller 410 includes a hub 411 which is connected to and driven by the motor 450 and a plurality of fan blades 412 connected to the hub 411. The plurality of fan blades 412 are spaced apart in a circumferential direction of the hub 411. It is understood that the reflux gas can readily enter between two adjacent fan blades 412 if there is no second baffle ring 430, and each of the fan blades 412 will produce larger noise when cutting the reflux gas. For this reason, a top of the fan blade 412 is connected to the inner ring of the second baffle ring 430. In this way, when the reflux gas flows in the radial direction of the impeller 410, it will first contact the second baffle ring 430 and be blocked by the second baffle ring 430 to prevent the reflux gas from continuing to flow towards the fan blades 412 and being cut by the fan blades 412. In addition, the top of each fan blade 412 is connected to the inner ring of the second baffle ring 430, which improves the structural strength of the fan 400.

It is noted that the plurality of fan blades 412 refer to three or more fan blades 412. In other embodiments, the number of the fan blades 412 of the fan 400 can also be set to two according to practical conditions.

In an embodiment, the hub 411 is provided with a plurality of reinforcing ribs, so that the structural strength of the hub 411 is improved.

In order to improve the connection strength of the first baffle ring 420, the second baffle ring 430 and the impeller 410, in an embodiment, the first baffle ring 420, the second baffle ring 430 and the impeller 410 are integrally formed. In other embodiments, the first baffle ring 420 and the second baffle ring 430 are detachably connected to the impeller 410. When the first baffle ring 420, the second baffle ring 430 and the impeller 410 are damaged, the corresponding parts can be replaced to save maintenance costs.

In an embodiment, the first baffle ring 420 has a side located opposite to the accommodation cavity which is connected in a smooth transition way to the inner ring of the second baffle ring 430, so that the wall surface of the air inlet channel 370 is relatively smooth, which helps the smoke flow from the air inlet channel 370 into the accommodation cavity 330 and enhances reducing the noise generated when the smoke flows.

In an embodiment, the first baffle ring 420 has a side located opposite to the accommodation cavity which is connected in a smooth transition way to the outer ring of the second baffle ring 430, so that the wall surface of the reflux gas channel 360 is relatively smooth, which helps the reflux gas flow out of the air inlet 340 more smoothly and enhances reducing the noise generated when the reflux gas flows.

In an embodiment, the inner ring of the first baffle ring 420 extends to form a guide arch ring 440 facing away and protruding beyond the motor 450, and the guide arch ring 440 is connected to the second baffle ring 430. In this way, the guide arch not only makes the smoke flow into an accommodation groove more smoothly, but also makes the reflux gas flow out of the air inlet 340 more smoothly, which greatly reduces the noise during the operation of the range hood 100 and improves the user experience. In addition, a side of the guide arch ring 440 close to the reflux gas channel 360 is recessed, so that when the reflux gas flows along the side of the guide arch ring 440, the guide arch ring 440 will exert a force that allows the reflux gas to flow towards the accommodation cavity, which causes the reflux gas to prevent subsequent reflux gas, and increases the difficulty for the subsequent reflux gas to flow out of the air inlet 340 and further suppresses the formation of the reflux gas.

In an embodiment, the first baffle ring 420 is connected to the periphery of the impeller 410, and the first baffle ring 420 and the box 300 define an air passage 361 that communicates with the gap. The air passage 361 extends the distance for the reflux gas to flow outside the range hood 100, and kinetic energy of the reflux gas is greatly consumed during the flow process of the air passage 361. When flowing out of a port of the air passage 361, the reflux gas has a small velocity, which reduces the whistling sound when the reflux gas flows out of the range hood 100. In an embodiment, the first baffle ring 420 is parallel to and spaced apart from a side of the box 300 on which the air inlet is provided, so as to define the air passage 361. It is noted that the above reflux gas channel 360 includes the air passage 361.

In an embodiment, a depth of the air passage 361 in the axial direction of the impeller 410 ranges from 3 mm to 8 mm. If the depth value is small, the first baffle ring 420 is prone to interference with the box 300. If the depth value is large, it is not conducive to consuming the kinetic energy of the reflux gas. Therefore, when the depth range is 3 mm to 8 mm, interference between the first baffle ring 420 and the box 300 is avoided, and the kinetic energy of the reflux gas can be consumed.

In an embodiment, the box 300 includes a box body 310 provided with the accommodation cavity 330 and the air outlet 350, and a first housing 320 detachably connected to the box body 310. The first housing 320 is provided with the air inlet 340, and the air inlet 340 extends towards the accommodating cavity 330. In this way, the box body 310 and the first housing 320 are facilitated to be formed separately, and the box 300 is facilitated to be processed. In addition, extending the air inlet 340 towards the accommodation cavity 330 is conducive to increasing the stroke of the reflux gas on the wall of the air inlet 340 and consuming the kinetic energy of the reflux gas. However, this design is not limited to this. In other embodiments, the box 300 and the first housing 320 can be integrally formed.

In an embodiment, the range hood 100 further includes a motor bracket 500 detachably connected to an outer surface of the box 300, and the motor bracket 500 extends into the accommodating cavity 330 from the air inlet 340. The motor 450 is installed on the motor bracket 500. In this way, the motor bracket 500 can be assembled on the box 300 in the axial direction of the impeller 410, and the fan 400 can be assembled on the motor bracket 500, which facilitates the assemble of the range hood 100. However, this design is not limited to this. In other embodiments, the motor bracket 500 is received in the accommodation cavity 330.

In an embodiment, in the axial direction of the fan 400, the box body 310, the first housing 320, the motor bracket 500 and the fan 400 are sequentially assembled on the former, which is beneficial to mass production of the range hood 100.

In an embodiment, the motor bracket 500 and the first housing 320 are locked with screws, which greatly improves the stability of the connection between the motor bracket 500 and the box 300. In an embodiment, the motor bracket 500 includes a mounting base for installing a power supply machine (such as, the motor 450) and support arms arranged on both sides of the mounting base along the radial direction of the mounting base. The support arm has a mounting part locked to the first housing 320 with screws, an extending part connecting the mounting part and the mounting base. The mounting part extends along the radial direction of the impeller 410, and the extending part extends through the air inlet 340 along the axial direction of the impeller 410. In this way, the motor bracket 500 hardly affects the air inlet volume of the air inlet 340, and in addition, the motor bracket 500 provides an installation location for the fan 400. In other embodiments, considering the structural strength of the motor bracket 500 and the first housing 320, the motor bracket 500 can be buckled with the first housing 320.

It is noted that, in an embodiment, an extension direction of the air inlet 340 is different from the extension direction of the air outlet 350, which can facilitate the design of the appearance of the box 300 and increase the sales of the range hood 100. In other embodiments, an axis of the air inlet 340 passes through the air outlet 350 to promptly exhaust the smoke from the accommodation cavity 330.

Nowadays, many exported range hoods 100 and vehicle-mounted range hoods 100 have low static pressure requirements. In an embodiment, the fan 400 can be configured as an axial flow fan 400. In other embodiments, the fan 400 can also be configured as a diagonal flow fan 400.

The present application also proposes a vehicle, which includes the aforementioned range hood 100. The specific structure of the range hood 100 refers to the above-mentioned embodiments. Since the vehicle adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be repeated here. It is noted that the vehicle can be, but is not limited to, a recreational vehicle (RV).

The above are only some embodiments of the present application, and are not intended to limit the scope of the present application. Under the inventive concept of the present application, equivalent structural transformations made using the contents of the description and accompanying drawings of the present application, or directly/indirectly application in other related technical fields, are included in the scope of the present application.