CN114811696A

CN114811696A - Cooking fume remover

Info

Publication number: CN114811696A
Application number: CN202210598327.8A
Authority: CN
Inventors: 任富佳; 刘硕; 高少华; 郑桐福; 王嘉明; 周海昕; 余国成; 常莹
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-07-29

Abstract

The invention discloses a range hood, belongs to the technical field of household appliances, and is designed for solving the problems that oil smoke in the existing range hood is easy to diffuse and the like. The invention provides a range hood, comprising: a box body, wherein a smoke exhaust channel is formed inside the box body; the smoke collecting cover is provided with an air inlet, and the air inlet is connected to the smoke exhaust channel through the smoke collecting channel; and a flow regulating plate disposed between the smoke discharge passage and the smoke collecting passage, the flow regulating plate being configured to restrict a flow path of the smoke. The range hood provided by the invention can reduce the space which can be reached by oil smoke when the oil smoke flows in the range hood, reduce the diffusion area of the oil smoke, reduce the risk of oil stain permeation, and reduce the problems of unstable work and short service life of parts in the range hood caused by oil smoke permeation. The rectifying plate realizes the rectification of the fluid in the range hood, reduces the turbulence degree of the fluid in the range hood, has higher oil fume exhaust efficiency, and has smaller impact on the interior of the range hood and lower noise.

Description

Cooking fume remover

Technical Field

The invention relates to the technical field of household appliances, in particular to a range hood.

Background

The fume exhauster is one kind of household appliance for exhausting indoor fume to outdoor. The working principle is as follows: a smoke exhaust channel is formed in a shell of the range hood, a fan is arranged in the smoke exhaust channel, air flow can be formed in the smoke exhaust channel after the fan is started, and oil smoke can be exhausted outdoors along with the air flow.

In order to collect the indoor oil smoke well, a smoke exhaust ventilator is usually designed with a smoke collecting hood, an air inlet is arranged on the smoke collecting hood, and the oil smoke enters a smoke exhaust channel after passing through the air inlet and an air duct in the smoke collecting hood. In the existing oil fume exhauster, the area between the port of the smoke exhaust channel and the air duct port in the smoke collecting hood is spacious, the oil fume moving range is large, the oil fume is diffused in the oil fume exhauster, the risk of oil stain permeation is high, the working stability of parts in the oil fume exhauster is reduced, and the service life of the parts is shortened; further, the soot tends to flow in this region in a turbulent manner, and the efficiency of soot exhaust is low.

Disclosure of Invention

The invention aims to provide a range hood which can effectively reduce the diffusion range of oil smoke.

In order to achieve the purpose, the invention adopts the following technical scheme:

a range hood, comprising: a box body, wherein a smoke exhaust channel is formed inside the box body; the smoke collecting cover is provided with an air inlet, and the air inlet is connected to the smoke exhausting channel through a smoke collecting channel; and a flow regulating plate disposed between the smoke discharge passage and the smoke collecting passage, the flow regulating plate being configured to restrict a flow path of the smoke.

In one preferred embodiment, the rectifying plate is provided with an air through hole, the smoke exhaust channel is arranged in the air through hole in a penetrating mode, and the outer wall of the smoke exhaust channel is connected with the air through hole in a sealing mode.

In a preferred embodiment, the outer edge of the rectifying plate abuts against and is in sealing connection with the inner wall of the box body.

In one preferred embodiment, the rectifying plate is provided with a plurality of rectifying through holes.

In one preferred embodiment, an oil guide groove is further arranged in the box body, the oil guide groove is abutted to the bottom of the rectifying plate, and the oil guide groove is located on the windward side of the rectifying plate.

In one preferred embodiment, the oil guide groove is provided with a convex rib along the oil smoke flowing direction, oil guide outlets are respectively arranged at two sides of the convex rib, and an oil guide inclined plane which is inclined downwards is connected between the convex rib and the oil guide outlets.

In a preferred embodiment, a deflector made of a flexible material is disposed at the oil outlet, and extends from the oil outlet to the oil cup of the fume collecting hood.

In a preferred embodiment, the oil guide groove is fixedly connected to the inner surface of the box body, and a sealing structure is arranged between the oil guide groove and the inner surface of the box body.

In one preferred embodiment, sound absorption cotton is arranged on the box body.

In one preferred embodiment, a fan is arranged in the smoke exhaust channel.

The rectifying plate for limiting the flow route of the oil smoke is arranged between the smoke exhaust channel and the smoke collection channel of the oil smoke exhauster provided by the invention, so that the space which the oil smoke can reach when flowing in the oil smoke exhauster can be reduced, the diffusion area of the oil smoke is reduced, the risk of oil stain permeation is reduced, and the problems of unstable work and short service life of parts in the oil smoke exhauster caused by oil smoke permeation are solved. The flow route of oil smoke can be restricted to the cowling panel, realizes the rectification to the inside fluid of range hood, reduces the degree of disorder of inside fluid, and the oil extraction cigarette efficiency is higher, and the fluid is littleer to the inside impact of range hood, and the noise is lower. Is especially suitable for the range hood with a liftable exhaust fume collecting hood.

Drawings

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

FIG. 2 is a schematic structural diagram of a range hood including a flow straightening plate according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a range hood including another flow straightening plate according to an embodiment of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3.

In the figure:

1. a box body; 2. a smoke collecting hood; 3. a rectifying plate; 4. sound-absorbing cotton; 5. an oil guide groove; 6. limiting the space; 11. a smoke evacuation channel; 21. an air inlet; 22. turning over a plate; 23. a smoke collection channel; 31. a wind through hole; 32. a rectifying through hole; 51. a rib; 52. an oil outlet; 53. oil guide inclined plane.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention can be embodied in many different forms than those herein described and many modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The present embodiment provides a range hood, as shown in fig. 1 to 4, which includes a tank 1, a smoke collecting cover 2, and a flow rectification plate 3. A smoke exhaust channel 11 is formed in the box body 1, a fan (not shown) is arranged in the smoke exhaust channel 11, and after the fan is started, airflow can be formed in the smoke exhaust channel 11; the smoke collecting hood 2 is provided with an air inlet 21 and a turning plate 22 which can be opened and closed, when the turning plate 22 is opened, the smoke leaks out of the air inlet 21 hidden behind, and the oil smoke can enter a smoke collecting channel 23 through the air inlet 21 and then enter a smoke exhaust channel 11 through the smoke collecting channel 23; the flow regulating plate 3 is provided between the smoke exhaust passage 11 and the smoke collecting passage 23, and the flow regulating plate 3 is configured to restrict a flow route of the smoke.

Through setting up cowling panel 3, reduced the space that the oil smoke can reach when flowing in the range hood, reduced the diffusion area of oil smoke, reduced the risk of greasy dirt infiltration, reduced the problem that spare part causes unstable work and life weak point in the range hood because of being permeated by the oil smoke. In addition, the rectifying plate 3 limits the flow path of the oil smoke by reducing the space where the oil smoke can reach, so that the rectification of fluid in the range hood is realized, the turbulence degree of the fluid in the range hood is reduced, the oil smoke discharging efficiency is higher, the impact of the fluid on the interior of the range hood is smaller, and the noise is lower. Is particularly suitable for a range hood with a liftable smoke collecting hood 2, and can effectively reduce the space between the smoke exhaust channel 11 and the smoke collecting channel 23 after the smoke collecting hood 2 descends.

It should be noted that, in order to show the internal structure of the range hood more clearly, a part of the housing or the shielding object is removed in fig. 1 to 3, or the internal structure is represented in a perspective manner. Except for the technical improvement point, the structure is basically the same as that of the existing range hood.

There may be some differences in the types of fans provided in the range hood, such as axial flow fans, centrifugal fans, etc., and accordingly there may be some differences in the structure and operation principle of the smoke evacuation passageway 11. In order to meet the use requirements of various range hoods, the structure of the rectifying plate 3 can be changed correspondingly.

A preferred structure of the rectifying plate 3 is shown in fig. 1 and 2. The rectifying plate 3 is provided with an air through hole 31, the smoke exhaust channel 11 is arranged in the air through hole 31 in a penetrating mode, and the outer wall of the smoke exhaust channel 11 is connected with the air through hole 31 in a sealing mode. Preferably, the end of the smoke evacuation channel 11 is clamped in the air through hole 31 and is hermetically connected with the air through hole.

A limiting space 6 is formed between the rectifying plate 3 and the back plate of the box body 1, and oil smoke can only enter the limiting space 6 after passing through the smoke collecting channel 23 and cannot be diffused in the whole box body 1, so that the problem of oil stain permeation is reduced. The oil smoke entering the limited space 6 can only enter the smoke exhaust channel 11 from the air through hole 31, thereby limiting the flow path of the oil smoke, reducing the turbulence degree of the oil smoke when flowing and having higher efficiency of oil smoke exhaust.

In order to avoid the oil smoke from bypassing the edge of the baffle plate 3, it is preferable that the outer edge of the baffle plate 3 abuts and is hermetically connected to the inner wall of the case 1. The limiting space 6 is thoroughly isolated from other spaces in the box body 1 so as to reduce the range which can be reached by the oil smoke, limit the diffusion of the oil smoke and reduce the turbulence degree of the oil smoke.

Fig. 3 and 4 show another preferred structure of the current plate 3. The rectifying plate 3 is a flat plate structure, and a plurality of rectifying through holes 32 are formed in the rectifying plate, so that the oil smoke passing through the smoke collecting channel 23 can enter the smoke exhaust channel 11 only after passing through the rectifying through holes 32. The rectifying through holes 32 limit the flow path of the oil smoke, so that the moving range of the oil smoke is reduced, the opportunity of oil smoke diffusion is reduced, and the turbulence degree of the oil smoke is reduced.

When the structure and the working principle of the smoke exhaust channel 11 need, the air through hole 31 and the rectification through hole 32 can be arranged on the rectification plate 3 at the same time, one part of oil smoke gas flows through the air through hole 31, the other part of oil smoke gas flows through the rectification through hole 32, and the air through hole 31 and the rectification through hole 32 jointly realize the flow path for limiting the oil smoke.

On the basis of the structure, an oil guide groove 5 is further arranged in the box body 1, the oil guide groove 5 abuts against the bottom of the rectifying plate 3, and the oil guide groove 5 is located on the windward side of the rectifying plate 3. The windward side is the surface of the rectifying plate 3 facing the outlet end of the smoke collecting channel 23, the oil smoke flow can impact the windward side surface after passing through the rectifying plate 3, the oil smoke flow can exchange heat with the rectifying plate 3, and oil drops can be condensed in the cooled oil smoke flow. The oil drops slide down along the surface of the rectifying plate 3 and fall into the oil guide groove 5, and flow into the oil cup of the range hood along the oil guide groove 5.

In order to improve the smoothness of oil drop flowing, a rib 51 is formed on the oil guiding groove 5 along the oil smoke flowing direction, oil guiding outlets 52 are respectively arranged on two sides of the rib 51, and an oil guiding inclined plane 53 is connected between the rib 51 and the oil guiding outlets 52. That is, the oil guide groove 5 is inclined downward with respect to the front and rear surfaces (the surface closer to the user is the front surface, and the surface farther from the user is the rear surface) of the casing 1, and is in an "inverted V" shape with respect to the left and right sides (the two side surfaces respectively connected between the front and rear surfaces) of the casing 1. Since the oil outlet 52 is lower than the rib 51, the oil guiding slope 53 is inclined downward from the rib 51 to the oil outlet 52, and oil drops can smoothly slide down the oil guiding slope 53 to the oil outlet 52 by gravity.

Preferably, the two oil guide outlets 52 are respectively opposite to a left passage (not shown) and a right passage (not shown) at the rear side of the fume collecting hood 2, and the left passage and the right passage respectively extend towards the oil cup. Oil drops can directly or indirectly drop into the oil cup at the oil guide outlet 52, so that the centralized treatment of oil stains is realized, and the user experience is improved.

To simplify the machining and installation process, the oil guide ramp 53 is not generally too long and the oil guide outlet 52 typically rides on a mounting seat. The mounting seat can be a box body 1 or a fume collecting hood 2, and the mounting seat can be arranged according to the specific structure of the fume exhaust fan. The oil drops tend to fall at the end of the oil outlet 52, but because the oil drops are relatively viscous, they will not fall directly from the end of the oil outlet 52 into the channel or cup, but will instead slide down the wall below the end of the oil outlet 52. In this process, oil droplets may infiltrate into the gap between the oil outlet 52 and the mount.

To solve this problem, a guide vane (not shown) made of a flexible material having a certain length may be provided at the oil outlet 52. The deflector is clamped between the oil guide outlet 52 and the mounting seat, and the flexible material enables the deflector to fill the gap between the oil guide outlet 52 and the mounting seat, i.e. the deflector is equivalent to form a sealing structure between the oil guide outlet 52 and the mounting seat, and can avoid friction between the oil guide outlet 52 and the mounting seat. The deflector extends from the oil outlet 52 to the oil cup of the fume collecting hood 2, oil drops can slide until reaching the position right above the oil cup and then drop into the oil cup, so that the oil drops are prevented from being adhered to one or more side surfaces in the box body 1 and/or the fume collecting hood 2, and the fume exhaust is more thorough and efficient.

The specific installation mode of the oil guide groove 5 is not limited, preferably, the oil guide groove 5 is fixedly connected to the inner surface of the box body 1, and a sealing structure is arranged between the oil guide groove 5 and the inner surface of the box body 1 to prevent oil drops from permeating into a gap between the oil guide groove 5 and the inner surface of the box body 1.

On the basis of the above structure, the sound absorption cotton 4 is arranged on the box body 1. The sound absorption cotton 4 is preferably arranged on the inner wall of the front side plate of the box body 1 close to a user, so that the noise of the range hood during working can be effectively reduced, and the use is more comfortable. The setting of cowling panel 3 can reduce the oil smoke and inhale the cotton contact of sound 4, avoids inhaling the cotton 4 of sound and inefficacy because of being corroded by the greasy dirt, has prolonged the life who inhales the cotton 4 of sound.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A range hood, characterized by, including:

a box body (1) with a smoke exhaust channel (11) formed inside;

the smoke collecting cover (2) is provided with an air inlet (21), and the air inlet (21) is connected to the smoke exhaust channel (11) through a smoke collecting channel (23); and the number of the first and second groups,

a flow regulating plate (3) provided between the smoke exhaust passage (11) and the smoke collecting passage (23), the flow regulating plate (3) being configured to be able to restrict a flow route of smoke.

2. The range hood according to claim 1, wherein the rectifying plate (3) is provided with an air through hole (31), the smoke exhaust channel (11) is arranged in the air through hole (31) in a penetrating manner, and the outer wall of the smoke exhaust channel (11) is connected with the air through hole (31) in a sealing manner.

3. The cooking fume extractor according to claim 2, characterized in that the outer edge of the fairing (3) abuts against and is connected in a sealing manner with the inner wall of the tank (1).

4. The range hood according to claim 1, wherein the rectifying plate (3) is provided with a plurality of rectifying through holes (32).

5. The range hood according to any of claims 1 to 4, wherein an oil guide groove (5) is further disposed in the box body (1), the oil guide groove (5) abuts against the bottom of the rectifying plate (3), and the oil guide groove (5) is located on the windward side of the rectifying plate (3).

6. The range hood according to claim 5, wherein a rib (51) is formed on the oil guiding groove (5) along the oil smoke flowing direction, oil guiding outlets (52) are respectively arranged on two sides of the rib (51), and an oil guiding inclined plane (53) which inclines downwards is connected between the rib (51) and the oil guiding outlets (52).

7. The cooking fume exhauster according to claim 6, wherein a deflector made of a flexible material is provided at the oil guiding outlet (52), and the deflector extends from the oil guiding outlet (52) to the oil cup of the fume collecting hood (2).

8. The range hood according to claim 5, wherein the oil guide groove (5) is fixedly connected to the inner surface of the box body (1), and a sealing structure is arranged between the oil guide groove (5) and the inner surface of the box body (1).

9. The cooking fume extractor according to any of the claims 1 to 4, characterized in that a sound absorbing cotton (4) is arranged on the box body (1).

10. The cooking fume extractor according to any of the claims 1 to 4, characterized in that a fan is arranged in the cooking fume channel (11).