CN221055082U

CN221055082U - Fume exhaust fan

Info

Publication number: CN221055082U
Application number: CN202322796782.1U
Authority: CN
Inventors: 任富佳; 董豪炳; 李智宝; 姚家前; 于巍巍; 郑强; 金杰
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-05-31
Anticipated expiration: 2033-10-18

Abstract

The utility model relates to the technical field of kitchen appliances, in particular to a range hood, which comprises a fume collecting hood, a connecting pipeline, a fan case, a fan and a guide plate, wherein the fume collecting hood is provided with a fume inlet; the lower end of the connecting pipeline is communicated with the fume collecting hood; the fan box is arranged at the upper end of the connecting pipeline, and is distributed in an L shape with the connecting pipeline, and is provided with a communication port communicated with the connecting pipeline; the fan is arranged in the fan case, the fan and the communication port are arranged in a staggered mode, the top of the fan is provided with an air inlet, and the side part of the fan is provided with an air outlet; the guide plate is arranged in the fan case, and air flow entering the fan case from the communication port can climb to the air inlet of the fan along the guide plate. According to the utility model, the fan case and the connecting pipeline form an L-shaped structure, and the fan and the communication port on the fan case are arranged in a staggered manner, so that noise can be reduced; in addition, through setting up the guide plate in the fan case, reduced flow loss, promoted smoking effect.

Description

Fume exhaust fan

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a range hood.

Background

The range hood has become one of the indispensable kitchen appliances in modern families. The range hood works by utilizing the fluid dynamics principle, and the range hood sucks and discharges oil smoke through a centrifugal fan arranged in the range hood and filters part of grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor for driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated at the center of the fan, and oil smoke below the range hood is sucked into the fan and is collected by the volute after being accelerated by the fan to be guided to be discharged out of the room.

In order to reduce noise, there is a ceiling fan system installed in a ceiling, whereby the fan system is located far from the human ear as a noise source, and a cabinet space is saved, so that the range hood of this type is becoming popular. However, the prior art has the defects that the resistance of the lampblack flowing in the range hood is high, so that the smoking effect is poor.

Disclosure of utility model

The utility model aims to provide a range hood, which can reduce noise, reduce flow resistance and improve smoking effect.

To achieve the purpose, the utility model adopts the following technical scheme:

A range hood, comprising:

A smoke collecting hood with a smoke inlet;

the lower end of the connecting pipeline is communicated with the fume collecting hood;

The fan box is arranged at the upper end of the connecting pipeline and is distributed in an L shape with the connecting pipeline, and the fan box is provided with a communication port communicated with the connecting pipeline;

The fan is arranged in the fan case, the fan and the communication port are arranged in a staggered mode, an air inlet is formed in the top of the fan, and an air outlet is formed in the side part of the fan;

The guide plate is arranged in the fan case, and wind entering the fan case from the communication port can climb to the air inlet of the fan along the guide plate.

As a preferred embodiment of the range hood, the guide plate comprises a first arc-shaped plate, the first arc-shaped plate is arranged on one side of the communication port, the first arc-shaped plate extends from one end of the communication port, which is away from the fan, to the direction of the fan, and the first arc-shaped plate is in a convex arc shape in the direction away from the communication port; the first arc-shaped plate inclines towards the outer side of the fan case, and the connecting line of the central points of the upper arc line and the lower arc line of the first arc-shaped plate forms an acute angle with the horizontal plane.

As a preferred embodiment of the range hood, the included angle between the connecting line of the central points of the upper arc line and the lower arc line of the first arc-shaped plate and the horizontal plane is 20-50 degrees.

As the preferred implementation mode of the range hood, the guide plate further comprises a second arc-shaped plate, the second arc-shaped plate is arranged on the periphery of the fan, the second arc-shaped plate is in a convex arc shape in the direction deviating from the fan, the lower arc of the second arc-shaped plate is identical to the outer arc of the fan, and one end of the upper arc of the second arc-shaped plate deviating from the first arc-shaped plate is connected with the inner wall of the fan case; the second arc-shaped plate inclines towards the direction deviating from the fan, and the connecting line of the central points of the upper arc line and the lower arc line of the second arc-shaped plate forms an acute angle with the horizontal plane.

As a preferred embodiment of the range hood, the included angle between the connecting line of the central points of the upper arc line and the lower arc line of the second arc-shaped plate and the horizontal plane is 20-50 degrees.

As a preferred embodiment of the range hood, the baffle further comprises an arc-shaped transition plate, and the arc-shaped transition plate is connected between the first arc-shaped plate and the second arc-shaped plate.

As a preferred embodiment of the range hood, the first arc-shaped plate is formed as a part of a side wall of the fan case.

As the preferred implementation mode of the range hood, the range hood further comprises a first rectifying net, wherein the first rectifying net is arranged in the connecting pipeline and is perpendicular to a tangent line at the smoke inlet.

As the preferred implementation mode of the range hood, the range hood further comprises a second rectifying net, wherein the second rectifying net is arranged at the communication port of the connecting pipeline and the fan box.

As a preferred embodiment of the range hood, the first and second rectifying nets each have a hole-passing ratio of 80% or more.

The utility model has the beneficial effects that:

According to the range hood provided by the utility model, the fan case and the connecting pipeline form an L-shaped structure, the fan and the communication port on the fan case are arranged in a staggered manner, noise emitted by the fan is not directly transmitted to the connecting pipeline, but is transmitted to the connecting pipeline after being continuously reflected in the fan case, so that the purpose of consuming acoustic energy is achieved, and the noise is further reduced. In addition, through setting up the guide plate in the fan case, the gas that gets into in the fan case can follow the wall climbing of guide plate, has reduced flow loss, has promoted smoking effect.

Drawings

Fig. 1 is a schematic structural view of a range hood according to an embodiment of the present utility model;

Fig. 2 is a schematic structural view of another range hood according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a baffle according to an embodiment of the present utility model;

Fig. 4 is a front view of the range hood of fig. 1;

Fig. 5 is a schematic view of the structure of the range hood of fig. 1 or 2 after the fan case is removed;

Fig. 6 is a schematic structural view of a second rectifying net according to the present utility model.

In the figure:

10. A fume collecting hood; 11. a smoke inlet; 20. a connecting pipe; 30. a fan case; 40. a blower; 41. an air inlet; 42. an air outlet; 50. a deflector; 51. a first arcuate plate; 52. a second arcuate plate; 53. an arc-shaped transition plate; 61. a first rectifying net; 62. and a second rectifying net.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 6, an embodiment of the present utility model provides a range hood, comprising a fume collecting hood 10, a connecting pipe 20, a fan box 30, a fan 40 and a deflector 50, wherein the fume collecting hood 10 is provided with a fume inlet 11; the lower end of the connecting pipeline 20 is communicated with the fume collecting hood 10; the fan box 30 is arranged at the upper end of the connecting pipeline 20, the fan box 30 and the connecting pipeline 20 are distributed in an L shape, and the fan box 30 is provided with a communication port communicated with the connecting pipeline 20; the fan 40 is arranged in the fan case 30, the fan 40 and the communication port are arranged in a staggered manner, an air inlet 41 is formed in the top of the fan 40, and an air outlet 42 is formed in the side part of the fan 40; the baffle 50 is disposed in the fan case 30, and the air flow entering the fan case 30 from the communication port can climb up to the air inlet 41 of the fan 40 along the baffle 50. The oil smoke enters the range hood from the smoke inlet 11 and is discharged after passing through the connecting pipeline 20, the fan box 30, the guide plate 50, the air inlet 41 of the fan 40 and the air outlet 42 of the fan 40 in sequence.

The fan case 30 and the connecting pipeline 20 form an L-shaped structure, and the fan 40 and the communication port on the fan case 30 are arranged in a staggered mode, noise emitted by the fan 40 is not directly transmitted to the connecting pipeline 20, but is transmitted to the connecting pipeline 20 after being continuously reflected in the fan case 30, so that the purpose of consuming acoustic energy is achieved, and noise is reduced. In addition, through setting up the guide plate 50 in fan case 30, the gas that gets into in the fan case 30 can follow the wall climbing of guide plate 50, has reduced flow loss, has promoted smoking effect.

Referring to fig. 1 to 3, specifically, the deflector 50 includes a first arc plate 51, the first arc plate 51 is disposed at one side of the communication port, the first arc plate 51 extends from one end of the communication port away from the fan 40 toward the fan 40, the first arc plate 51 is in a convex arc shape toward the direction away from the communication port, the first arc plate 51 is inclined toward the outer side of the fan case 30, and a connecting line of the central points of the upper arc line and the lower arc line of the first arc plate 51 is disposed at an acute angle with the horizontal plane. Through the above structure setting for first arc 51 has certain radian and slope, after connecting pipe 20 internal air current gets into fan case 30 through the intercommunication mouth, can flow along the radian of first arc 51 and climb simultaneously along the slope of first arc 51, and air current flow loss is less. In this embodiment, the angle between the line connecting the center points of the upper and lower arcs of the first arc plate 51 and the horizontal plane is preferably 20 ° -50 °.

The deflector 50 further comprises a second arc-shaped plate 52, the second arc-shaped plate 52 is arranged on the periphery of the fan 40, the second arc-shaped plate 52 is in a convex arc shape in the direction away from the fan 40, the lower arc line of the second arc-shaped plate 52 is identical to the outer arc line of the fan 40 in arc degree, one end, away from the first arc-shaped plate 51, of the upper arc-shaped plate 52 is connected with the inner wall of the fan box 30, the second arc-shaped plate 52 is inclined in the direction away from the fan 40, and the connecting line of the central points of the upper arc line and the lower arc line of the second arc-shaped plate 52 is arranged at an acute angle with the horizontal plane. Through setting up second arc 52 and setting up the structure of second arc 52, can make guide plate 50 and fan 40 better linking, ensure that the air current of any direction in entering fan case 30 by the intercommunication mouth can both climb along guide plate 50. In this embodiment, the angle between the line connecting the center points of the upper and lower arcs of the second arc plate 52 and the horizontal plane is preferably 20 ° -50 °.

The baffle 50 further includes an arc-shaped transition plate 53, where the arc-shaped transition plate 53 is connected between the first arc-shaped plate 51 and the second arc-shaped plate 52, so that the first arc-shaped plate 51 and the second arc-shaped plate 52 form a smooth transition, and the airflow is smoother when flowing along the baffle 50.

In some embodiments, referring to FIG. 1, a baffle 50 is integrally disposed within the fan case 30. In other embodiments, referring to FIG. 2, the first arcuate plate 51 of the baffle 50 may be directly formed as part of the side wall of the fan case 30, and the second arcuate plate 52 and arcuate transition plate 53 may be disposed within the fan case 30.

Referring to fig. 4 to 6, the range hood provided in this embodiment further includes a first rectifying net 61 and a second rectifying net 62, the first rectifying net 61 is disposed in the connecting pipe 20 to adjust the airflow pattern, and the first rectifying net 61 is perpendicular to a tangent line L at the smoke inlet 11 to reduce the flow loss of the airflow. It is understood that the tangential direction at the smoke inlet 11 is the smoke inlet direction. The second rectifying net 62 is disposed at a communication port between the connecting duct 20 and the fan case 30 to further adjust the airflow pattern. In this embodiment, the openings of the first and second stranding nets 61 and 62 are preferably hexagonal, and the through-hole rates of the first and second stranding nets 61 and 62 are 80% or more, so as to ensure the passing rate of the air flow through the first and second stranding nets 61 and 62.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A range hood, comprising:

A smoke collecting hood (10) having a smoke inlet (11);

A connecting pipe (20) the lower end of which is communicated with the fume collecting hood (10);

The fan box (30) is arranged at the upper end of the connecting pipeline (20), the fan box (30) and the connecting pipeline (20) are distributed in an L shape, and the fan box (30) is provided with a communication port communicated with the connecting pipeline (20);

The fan (40) is arranged in the fan box (30), the fan (40) and the communication port are arranged in a staggered mode, an air inlet (41) is formed in the top of the fan (40), and an air outlet (42) is formed in the side portion of the fan (40);

The air guide plate (50) is arranged in the fan box (30), and wind entering the fan box (30) from the communication port can climb to an air inlet (41) of the fan (40) along the air guide plate (50).

2. The range hood according to claim 1, wherein the deflector (50) comprises a first arc-shaped plate (51), the first arc-shaped plate (51) is arranged at one side of the communication port, the first arc-shaped plate (51) extends from one end of the communication port, which is away from the fan (40), to the direction of the fan (40), and the first arc-shaped plate (51) takes the shape of an arc protruding towards the direction, which is away from the communication port; the first arc plate (51) inclines towards the outer side of the fan box (30), and a connecting line of the central points of the upper arc line and the lower arc line of the first arc plate (51) and the horizontal plane form an acute angle.

3. A range hood according to claim 2, wherein the line connecting the central points of the upper and lower arcs of the first arc plate (51) is at an angle of 20 ° -50 ° to the horizontal.

4. The range hood according to claim 2, wherein the deflector (50) further comprises a second arc-shaped plate (52), the second arc-shaped plate (52) is arranged at the periphery of the fan (40), the second arc-shaped plate (52) takes a shape of an arc protruding towards a direction deviating from the fan (40), a lower arc of the second arc-shaped plate (52) is identical to an outer arc of the fan (40), and an upper arc of the second arc-shaped plate (52) is connected with an inner wall of the fan box (30) at one end deviating from the first arc-shaped plate (51); the second arc plate (52) is inclined towards the direction deviating from the fan (40), and a connecting line of the central points of the upper arc line and the lower arc line of the second arc plate (52) and the horizontal surface form an acute angle.

5. The range hood according to claim 4, wherein the line connecting the center points of the upper and lower arcs of the second arc plate (52) forms an angle of 20 ° -50 ° with the horizontal plane.

6. The range hood according to claim 4, wherein the baffle (50) further comprises an arcuate transition plate (53), the arcuate transition plate (53) being connected between the first arcuate plate (51) and the second arcuate plate (52).

7. -Range hood according to any of the claims 2 to 6, characterized in that the first arc-shaped plate (51) is formed as a part of the side wall of the fan box (30).

8. The range hood according to claim 1, further comprising a first rectifying net (61), wherein the first rectifying net (61) is arranged in the connecting pipe (20), and the first rectifying net (61) is perpendicular to a tangent line at the smoke inlet (11).

9. The range hood according to claim 8, further comprising a second rectifying net (62), the second rectifying net (62) being disposed at the communication port of the connection duct (20) and the fan case (30).

10. The range hood according to claim 9, wherein the through hole ratio of the first and second strainers (61, 62) is 80% or more.