CN216591864U

CN216591864U - Fume exhaust fan

Info

Publication number: CN216591864U
Application number: CN202123165979.2U
Authority: CN
Inventors: 任富佳; 陈建卫; 周海昕; 郑桐福; 余国成
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-24
Anticipated expiration: 2031-12-16

Abstract

The utility model relates to a kitchen appliance technical field specifically discloses a range hood, and this range hood includes box subassembly, fan subassembly and equalizer plate. Wherein, the box body component is provided with a smoke inlet; the fan assembly is arranged in the middle of the interior of the box body assembly; the pressure equalizing plate is arranged on the box body assembly and located between the smoke inlet and the fan assembly, and is provided with a flow guide portion which is communicated with the smoke inlet and the fan assembly and used for guiding at least part of negative pressure generated by the fan assembly to the edge area of the smoke inlet. The arrangement avoids the problem that negative pressure on two sides of the smoke inlet is small, so that the smoke rises and escapes on two sides of the smoke inlet to cause air pollution in a kitchen.

Description

Fume exhaust fan

Technical Field

The utility model relates to a kitchen appliance technical field especially relates to a range hood.

Background

A common range hood is fixed right above a gas stove, a fan assembly is arranged in a box body assembly of the range hood, and an exhaust fan of the fan assembly rotates to generate negative pressure at a smoke inlet of the range hood during working, so that oil smoke generated above the gas stove is sucked and discharged outdoors to achieve the purpose of purifying indoor air.

As shown in fig. 1, a box assembly 1 'of the existing range hood is provided with a fan assembly 2' and a smoke inlet 11 ', and both the fan assembly 2' and the smoke inlet 11 'are disposed at a central position of the box assembly 1'.

The only smoke inlet 11 'is arranged at the central position of the box body component 1', so that negative pressure is easily concentrated in the central area of the smoke inlet 11 ', and the negative pressure at the two side edges of the smoke inlet 11' is smaller. Therefore, when cooking, because the negative pressure on the left side and the right side of the smoke inlet 11' is small, the suction force is insufficient, the oil smoke is easy to escape from the edges of the two sides in the rising process and causes air pollution in a kitchen, and the product experience of a user is influenced.

Therefore, a new range hood is needed to improve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a range hood will be guided to the marginal area of advancing the mouth by the negative pressure at least part that the fan subassembly produced to the both sides negative pressure of avoiding advancing the mouth is little on the right side, leads to the oil smoke process of rising to produce the problem of escaping and then arousing kitchen air pollution in the both sides of advancing the mouth.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a range hood, this range hood includes:

the box body assembly is provided with a smoke inlet;

the fan assembly is arranged in the middle of the interior of the box body assembly; it is characterized by also comprising:

the pressure equalizing plate is arranged on the box body assembly and located between the smoke inlet and the fan assembly, and the pressure equalizing plate is provided with a flow guide portion which is communicated with the smoke inlet and the fan assembly and used for guiding at least part of negative pressure generated by the fan assembly to the edge area of the smoke inlet.

As a preferable scheme of the range hood, the flow guide part comprises an air inlet channel arranged on the pressure equalizing plate, and the air inlet channel is communicated with the smoke inlet and the air inlet of the fan assembly.

As a preferred scheme of the range hood, the cross section of the air inlet channel is in a shape that the width size of the air inlet channel is gradually increased from the middle to two ends.

As a preferred scheme of the range hood, the number of the air inlet channels is two, the two air inlet channels are respectively arranged at two sides of the fan assembly, and the cross section of each air inlet channel is gradually increased along the direction away from the fan assembly.

As a preferred scheme of the range hood, the number of the air inlet channels is multiple, the air inlet channels are divided into two groups, the two groups of the air inlet channels are respectively positioned at two sides of the fan assembly, and the cross section areas of the air inlet channels in the same group are gradually increased from the center of the smoke inlet to the directions of the two sides.

As a preferable scheme of the range hood, the distance D between the outermost edges of the two ends in all the air inlet channels is larger than the distance D between the outermost edges of the two ends in all the cooking pots on the kitchen range.

As a preferred scheme of the range hood, the range hood has the advantages that the range hood has the diameter of 600mm and the D is more than 500 mm.

As a preferred scheme of the range hood, the pressure equalizing plate is of a flat plate structure.

As a preferred scheme of the range hood, the pressure equalizing plate is of a non-planar structure.

As a preferred scheme of the range hood, the range hood further comprises an oil screen, the oil screen is arranged at the smoke inlet, and the pressure equalizing plate is located between the oil screen and the fan assembly.

The utility model has the advantages that:

the utility model provides a range hood, this range hood are through setting up the equalizer plate between air intake and fan subassembly to set up water conservancy diversion portion at the equalizer plate, water conservancy diversion portion can lead to the marginal area of inlet flue by the negative pressure at least part that the fan subassembly produced. The arrangement avoids the problem that negative pressure on two sides of the smoke inlet is small, so that the smoke rises and escapes on two sides of the smoke inlet to cause air pollution in a kitchen.

Drawings

Fig. 1 is a schematic structural diagram of a range hood in the prior art;

fig. 2 is a schematic structural diagram of the range hood in the embodiment of the present invention;

FIG. 3 is a schematic diagram of the position relationship of the pressure equalizing plate in the embodiment of the present invention;

FIG. 4 is a schematic structural view of the pressure equalizing plate provided with an air inlet channel in the embodiment of the present invention;

FIG. 5 is a schematic view of a planar pressure equalizing plate of the embodiment of the present invention having two air inlet channels;

FIG. 6 is a schematic view of a non-planar pressure equalizing plate of the embodiment of the present invention having two air inlet channels;

FIG. 7 is a schematic view of an embodiment of the present invention, in which a plurality of air inlet channels with different cross-sectional areas are disposed on a pressure equalizing plate;

FIG. 8 is a schematic view of an embodiment of the present invention in which a plurality of air inlet channels having the same cross-sectional area are disposed on the pressure equalizing plate;

FIG. 9 is a schematic view of the length of an oil screen in an embodiment of the present invention;

fig. 10 is a schematic view of the distance between the outermost edges of two cookware in the embodiment of the present invention.

In the figure:

1', a box body component; 11', a smoke inlet; 2', a fan assembly;

100. a cooker; 200. a cooking pot;

1. a case assembly; 11. a smoke inlet;

2. a fan assembly; 3. a pressure equalizing plate; 31. an air inlet channel; 4. and (4) an oil net.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 2, the present embodiment provides a range hood, which includes a box assembly 1, a fan assembly 2, and a pressure equalizing plate 3. The box body assembly 1 is arranged above the cooker 100 and serves as a mounting base body for other components of the range hood, and meanwhile, the box body assembly 1 is provided with a smoke inlet 11, and the smoke inlet 11 is used for gathering and sucking oil smoke in the cooking process of the cooker 200. The fan assembly 2 is arranged in the middle of the inside of the box body assembly 1, the air inlet of the fan assembly 2 is communicated with the smoke inlet 11 of the box body assembly 1, the downstream of the fan assembly is communicated with the flue, and the fan assembly 2 is used for providing negative pressure and sucking the oil smoke entering the box body assembly 1 from the smoke inlet 11 into the flue for emission. The pressure equalizing plate 3 is fixedly arranged on the box body assembly 1 and is positioned between the smoke inlet 11 and the fan assembly 2, and the pressure equalizing plate 3 is provided with a flow guide part which is communicated with the smoke inlet 11 and the fan assembly 2 and is used for guiding at least part of negative pressure generated by the fan assembly 2 to the edge area of the smoke inlet 11. Through the guide of water conservancy diversion portion, at least partial negative pressure is redistributed to the border position of inlet 11, consequently, the gas flow that gets into fan subassembly 2 by the border region of inlet 11 increases, the velocity of flow improves to the negative pressure of inlet 11 border region is improved, and then can be with the oil smoke that gets into box subassembly 1 by inlet 11 border region in leading to fan subassembly 2 in. Wherein, when the cooking personnel stands in front of the range hood, the edge area of the smoke inlet 11 is preferably the left and right sides of the smoke inlet 11. The pressure equalizing plate 3 can be screwed, clamped, welded or inserted into the box body assembly 1, and the specific connection mode is not limited to this. The arrangement avoids the problem that negative pressure on two sides of the smoke inlet 11 is small, so that the smoke escapes from two sides of the smoke inlet 11 in the rising process to cause air pollution in a kitchen.

As shown in fig. 3, the flow guiding portion may include an air inlet channel 31 disposed on the pressure equalizing plate 3, the air inlet channel 31 communicates with the smoke inlet 11 and the air inlet of the fan assembly 2, and the oil smoke entering the box assembly 1 from the smoke inlet 11 enters the air inlet of the fan assembly 2 through the air inlet channel 31 and is discharged downstream. Of course, the guiding portion may also be implemented in other ways, such as in the form of a pipeline, and the guiding portion may include a plurality of pipelines, one end of each pipeline is connected to the air inlet of the ventilator assembly 2, and the other end of each pipeline is communicated with the smoke inlet 11. Wherein the piping is not shown in the figures. Preferably, the other end of the duct faces the smoke inlet 11, and the projection of the inlet of the duct on the plane of the smoke inlet 11 is uniformly distributed in the smoke inlet 11.

In order to reduce the cost and simplify the manufacturing process, in other embodiments of this embodiment, optionally, the flow guide portion may include two pipes, one end of one of the pipes faces the fan assembly 2, and the other end is located on one side of the smoke inlet 11; one end of the other pipeline is opposite to the fan component 2, and the other end of the other pipeline is positioned at the other side of the smoke inlet 11. Furthermore, the cross section of the inlet of the pipeline is rectangular, and the long edge of the pipeline is arranged along the height direction of the range hood, so that the air inlet area of the two end areas of the smoke inlet 11 is increased.

Of course, the air guiding portion in the form of an air inlet channel is preferred in this embodiment in view of processing cost and air guiding effect, and the air inlet channel 31 is only taken as an example to specifically describe the air guiding portion hereinafter.

There are various ways as to the number, structure, position, etc. of the air supply passages 31. Referring to fig. 4, an embodiment of the air supply channel 31 is shown, wherein one air supply channel 31 may be provided, and the cross-sectional shape of the air supply channel 31 is such that the width dimension thereof gradually increases from the middle to both ends. With the arrangement of the above structure, although the negative pressure in the middle area of the fan assembly 2 is large, the air flow velocity is large, however, since the width of the middle area of the air inlet channel 31 is smaller and the width of the two end areas is larger, the air flow entering the fan assembly 2 through the middle area of the air inlet channel 31 is reduced after being limited, the air flow entering the fan assembly 2 through the two end areas of the air inlet channel 31 is increased, thereby reducing the airflow entering the box body component 1 from the middle area of the smoke inlet 11, increasing the airflow entering the box body component 1 from the two end areas of the smoke inlet 11, equivalently guiding partial negative pressure of the fan component 2 to the edge of the smoke inlet, realizing the redistribution of the negative pressure generated by the fan component 2, the negative pressure distribution of the whole opening range of the smoke inlet 11 tends to be uniform, the smoking capability of the edge area of the smoke inlet 11 is obviously improved, and the oil smoke can be effectively prevented from escaping from the edge area of the periphery of the smoke inlet 11.

Referring to fig. 5 and 6, a second embodiment of the air inlet channel 31 is shown, in which the number of the air inlet channels 31 is two, two air inlet channels 31 are respectively disposed at two sides of the fan assembly 2, and the cross-sectional shape of the air inlet channel 31 is such that the width dimension thereof gradually increases in a direction away from the fan assembly 2. This embodiment is first through dividing two inlet air duct 31 in fan subassembly 2's both sides, just can guide the air current on the whole for the air current gets into fan subassembly 2 through the both sides region of advancing smoke mouth 11, further designs the cross sectional shape of the inlet air duct 31 of every side its width size along the direction of keeping away from fan subassembly 2 and increases gradually, then can further optimize the flow field, makes the marginal zone air inlet area who is closer to equalizer plate 3 bigger more, with the marginal zone of guaranteeing smoke mouth 11 distributes sufficient negative pressure. Besides, two air inlet channels 31 which are distributed are favorable for adapting to different internal structures of the range hood.

Referring to fig. 7, a third embodiment of the air inlet channel 31 is shown, wherein the number of the air inlet channels 31 may also be multiple, the air inlet channels 31 are divided into two groups, the two groups of air inlet channels 31 are respectively located at two sides of the fan assembly 2, and the cross-sectional areas of the air inlet channels 31 in the same group are gradually increased from the center of the smoke inlet 11 to the two sides. The cross-sectional area is gradually increased, so that the cross-sectional area of a single air inlet channel 31 can be increased, and the number of the air inlet channels 31 can also be increased. Specifically, when the cross-sectional areas of the air inlet channels 31 in the same group are different, the cross-sectional areas of the air inlet channels 31 in the same group are gradually increased from the center of the smoke inlet 11 to the two sides; when the cross-sectional area of each air inlet channel 31 is the same, the number of the air inlet channels 31 is gradually increased from the center of the smoke inlet 11 to the two sides. In the present embodiment, the cross-sectional shape of the air intake channel 31 may be a circle, a kidney, or a polygon. Of course, in other embodiments of the present embodiment, the shape of the cross section of the air intake channel 31 may also be other irregular shapes, and is not limited thereto. In the embodiment, firstly, two groups of air inlet channels 31 are respectively arranged at two sides of the fan assembly 2, so that the air flow can be guided integrally, the air flow enters the fan assembly 2 through the areas at two sides of the smoke inlet 11, and the cross section area of the air inlet channel 31 in each group is further gradually increased from the center of the smoke inlet 11 to the directions at two sides, so that the flow field can be further optimized, the air inlet area of the edge area which is closer to the pressure equalizing plate 3 is larger, and the edge area of the smoke inlet 11 is ensured to be distributed with enough negative pressure; in the second aspect, the two groups of air inlet channels 31 which are distributed are beneficial to adapting to different internal structures of the range hood; in the third aspect, the change of the cross-sectional area or the number of each group of the air inlet channels 31 from the center of the smoke inlet 11 to the two sides is more beneficial to adapting to different internal structures of the range hood.

Illustratively, the air inlet channels 31 are kidney-shaped and are provided with six air inlet channels, each three air inlet channels are a group, two groups of air inlet channels 31 are respectively arranged at two sides of the fan assembly 2, and the cross-sectional areas of the air inlet channels 31 in the same group are gradually increased along the direction far away from the fan assembly 2.

In the cooking process, the oil smoke will emerge from the cooking pots 200 and enter the fan assembly 2 through the smoke inlet 11, generally, in order to make the smoke inlet 11 suck all the oil smoke, the smoke inlet 11 can cover all the cooking pots 200 on the cooker 100, and in order to make the smoke inlet 11 have negative pressure capable of adsorbing the oil smoke everywhere, as shown in fig. 4, fig. 5, fig. 7, fig. 8 and fig. 10, in the present embodiment, preferably, the distance D between the outermost edges of both ends in all the air inlet channels 31 is greater than the distance D between the outermost edges of both ends in all the cooking pots 200 on the cooker 100. Wherein, regarding the distance D, when there is one air inlet channel 31, the length of the cross-sectional pattern of the air inlet channel 31 is D; when there are two air inlet channels 31, the distance between the outermost edges of the cross-sectional patterns of the two air inlet channels 31 is D; when there are a plurality of air inlet ducts 31, the distance between the outermost edges of the cross-sectional pattern of the outermost air inlet duct 31 is D. Regarding the distance d, when there is one cookware 200 on the cooker 100, the length or diameter of the cookware 200 is d; when two cooking pots 200 are provided on the cooker 100, the distance between the outermost edges of the two cooking pots 200 is d; when there are a plurality of cookers 200 on the cooker 100, the distance between the outermost edges of the outermost cookers 200 is d.

In this embodiment, preferably, 600mm > D >500 mm. Specifically, D may be 500mm, 510 mm, 520 mm, 550 mm, 551 mm, 552 mm, 560 mm, 570 mm, 580 mm, 590 mm, 591 mm, 592 mm, 599 mm, 600mm, and the like. Of course, in other embodiments of the present embodiment, D may also be a size other than 500 mm-600 mm, and for example, D may also be 100 mm, 200 mm, 300 mm, 400 mm, 610 mm, 650 mm, 700 mm, 800 mm, 900 mm, or even 2000 mm, but is not limited thereto, and may be set according to the distance D between the outermost edges of the two ends of all cookware 200.

On the premise that the overall external dimensions are different, in order to ensure that the airflow can smoothly pass through the air inlet channel 31 from the smoke inlet 11 and finally enter the fan assembly 2, as shown in fig. 5-6, in the present embodiment, preferably, the pressure equalizing plate 3 is of a flat plate structure or a non-planar structure. Wherein, the pressure equalizing plate 3 with a non-planar structure is prepared by a drawing forming or punch forming process.

Optionally, the range hood further includes an oil screen 4, the oil screen 4 is disposed at the smoke inlet 11, and the pressure equalizing plate 3 is located between the oil screen 4 and the fan assembly 2. In this embodiment, can filter the oil smoke in the air current through oil net 4 with the help of setting up of oil net 4, and then reduced the pollution to equalizer plate 3 and fan subassembly 2.

Referring to fig. 9, in order to improve the smoking effect, the length L of the oil net 4 needs to satisfy a certain requirement, and generally, the larger the length L, the better the smoking effect. In the present embodiment, the length L of the oil screen 4 is optionally 700 ± 50 mm in consideration of appearance. Of course, in other embodiments of the present embodiment, the length L may also be other sizes, and for example, the length L may also be 100 mm, 200 mm, 300 mm, 400 mm, 610 mm, 800 mm, 900 mm, or even 2000 mm, but not limited thereto, and may be set according to the distance d between the outermost edges of the two ends of all cookware 200 on the cooker 100.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A range hood, comprising:

the box body assembly (1), wherein a smoke inlet (11) is formed in the box body assembly (1);

the fan assembly (2) is arranged in the middle of the interior of the box body assembly (1); it is characterized by also comprising:

the pressure equalizing plate (3) is arranged on the box body assembly (1) and located between the smoke inlet (11) and the fan assembly (2), the pressure equalizing plate (3) is provided with a flow guide part, the flow guide part is communicated with the smoke inlet (11) and the fan assembly (2) and used for guiding negative pressure generated by the fan assembly (2) to the edge area of the smoke inlet (11) at least in part.

2. The range hood according to claim 1, wherein the flow guiding portion comprises an air inlet channel (31) provided on the pressure equalizing plate (3), and the air inlet channel (31) communicates the smoke inlet (11) and an air inlet of the fan assembly (2).

3. The range hood according to claim 2, wherein the cross-sectional shape of the air intake channel (31) is such that its width dimension gradually increases from the middle to both ends.

4. The range hood according to claim 2, wherein the number of the air inlet channels (31) is two, the two air inlet channels (31) are respectively located at two sides of the fan assembly (2), and the cross-sectional shape of the air inlet channel (31) is such that the width dimension thereof gradually increases along the direction away from the fan assembly (2).

5. The range hood according to claim 2, wherein the number of the air inlet channels (31) is plural, the plural air inlet channels (31) are divided into two groups, the two groups of the air inlet channels (31) are respectively located at two sides of the fan assembly (2), and the cross-sectional areas of the air inlet channels (31) in the same group are gradually increased from the center of the smoke inlet (11) to the two sides.

6. The range hood according to any one of claims 3-5, wherein the distance D between the outermost edges of both ends in all the air intake channels (31) is greater than the distance D between the outermost edges of both ends in all the cookware (200) on the cooking hob (100).

7. A range hood as claimed in claim 6, wherein 600mm > D >500 mm.

8. A range hood according to any of claims 1-5, wherein the pressure equalizing plate (3) is of a plate-like structure.

9. The range hood according to any one of claims 1 to 5, wherein the pressure equalizing plate (3) has a non-planar structure.

10. The range hood according to any one of claims 1 to 5, further comprising an oil screen (4), wherein the oil screen (4) is disposed at the smoke inlet (11), and the pressure equalizing plate (3) is disposed between the oil screen (4) and the fan assembly (2).