CN216409060U - Oil net and range hood using same - Google Patents

Abstract

The application relates to the technical field of household appliances, and discloses an oil net, include: a flat frame and a net part. The flat frame is provided with an oil smoke suction port; the net part is arranged in the oil smoke suction opening and is provided with an upward arc-shaped bulge, and the highest point of the arc-shaped bulge deviates to the first edge of the net part. In this application, set up the arc arch through the net part department at the oil net, change the negative pressure region of oil net lower part, make the negative pressure region to the skew of both sides to increase the area of negative pressure region, negative pressure region and oil smoke diffusion path phase-match can effectively improve the smoking effect of the lampblack absorber that adopts dull and stereotyped oil net. The application also discloses a range hood.

Description

Oil net and range hood using same

Technical Field

The application relates to the technical field of household appliances, in particular to an oil screen and a range hood using the same.

Background

At present, a plurality of kinds of range hood are provided on the market, the smoking effect difference is large, the oil screen types matched with a common flat plate machine mainly comprise a conical oil screen and a flat oil screen, a negative pressure area concentrated near the oil screen is formed to absorb oil smoke, however, the negative pressure area is concentrated in the middle, so that the oil smoke on the left side, the right side and the front side of the range hood can escape seriously, a plurality of oil screen parts are often arranged in the related technology, and the oil screen parts are separated from each other at a certain distance to improve the area of the negative pressure area, so that the oil smoke absorption capacity is improved.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

under the condition of keeping the plane size of the plane oil screen unchanged, the area of the negative pressure area still cannot be enlarged, and the oil fume suction capacity is low.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an oil net and a range hood using the same, so that the smoking effect of the range hood adopting a flat oil net is effectively improved.

In some embodiments, the oil screen comprises: a flat frame and a net part. The flat frame is provided with an oil smoke suction port; the net part is arranged in the oil smoke suction opening and is provided with an upward arc-shaped bulge, and the highest point of the arc-shaped bulge deviates to the first edge of the net part.

Optionally, a plurality of oil smoke suction openings which are sequentially arranged along a straight line are formed in the flat frame, and a net portion is arranged in each oil smoke suction opening.

Optionally, the mesh portion comprises: a first wire section and a second wire section; the first net part and the second net part are respectively arranged in the two adjacent oil smoke suction openings, and the first edge of the first net part and the first edge of the second net part are oppositely arranged.

Optionally, there is a set spacing between the first and second wire sections.

Alternatively, the interval is set to be greater than or equal to one third of the width of the wire section and less than or equal to the width of the wire section.

Optionally, the interval between the first net part and the second net part is a convex structure opposite to the protruding direction of the arc-shaped protrusion.

Optionally, the highest point of the arc-shaped protrusion is in a straight line and penetrates through two opposite side edges of the net part.

Optionally, the arcuate projection comprises: the first arc part is positioned on one side of the highest point of the arc-shaped bulge; the second arc part is positioned on the other side of the highest point of the arc-shaped bulge, and the radian of the second arc part is smaller than that of the first arc part.

Optionally, the height of the highest point of the arc-shaped protrusion of the net part protruding relative to the flat plate frame is greater than or equal to 3 cm and less than or equal to 8 cm.

In some embodiments, a range hood includes: the oil screen of the above embodiment.

The oil net and the range hood using the oil net provided by the embodiment of the disclosure can realize the following technical effects:

the arc-shaped bulges are arranged at the net part of the oil net, so that the negative pressure area at the lower part of the oil net is changed, the negative pressure area is deviated to two sides, the area of the negative pressure area is increased, the negative pressure area is matched with the oil smoke diffusion path, and the smoke absorption effect of the range hood adopting the flat oil net can be effectively improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic structural diagram of an oil screen provided by an embodiment of the present disclosure;

FIG. 2 is a bottom view of an oil screen provided by embodiments of the present disclosure;

FIG. 3 is a front view of an oil screen provided by embodiments of the present disclosure;

fig. 4 is a schematic view of a distribution of negative pressure zones provided by an embodiment of the present disclosure.

Reference numerals:

100. a flat plate frame; 200. a smoke suction port; 300. a net section; 301. a first side; 302. strip-shaped meshes; 303. a first net section; 304. a second net section; 305. a strip-shaped partition plate; 306. a first arc portion; 307. a second arc portion; 400. setting an interval; 500. pressure curve.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

With reference to fig. 1-4, embodiments of the present disclosure provide an oil screen, including: a flat bezel 100 and a mesh portion 300. The flat frame 100 is provided with an oil smoke suction port 200; the net part 300 is disposed in the oil smoke suction port 200 and has an upward arc-shaped protrusion, and the highest point of the arc-shaped protrusion is deviated to the first side 301 of the net part 300.

By adopting the oil screen provided by the embodiment of the disclosure, the arc-shaped bulge is arranged at the screen part 300 of the oil screen, so that the negative pressure area at the lower part of the oil screen is changed, the negative pressure area is shifted to two sides, the area of the negative pressure area is increased, the negative pressure area is matched with the oil smoke diffusion path, and the smoking effect of the range hood adopting the flat oil screen can be effectively improved.

Alternatively, the flat frame 100 is formed by surface spraying cold-rolled steel sheet. Thus, the appearance is smooth, beautiful and rustless, the durability is high, and the cleaning is easy.

Optionally, the plastic-sprayed material on the surface of the flat plate frame 100 is teflon. Thus, the flat bezel 100 has the advantages of being oil-free, easy to clean, and corrosion resistant.

Optionally, the net part 300 is detachably connected with the smoke exhaust port 200. Like this, be convenient for change net portion 300, can dismantle maintenance and washing net portion 300 alone, guarantee the cleanliness of net portion 300 to connection structure is simplified, installs convenient and fast more.

Optionally, the net part 300 is fixedly connected with the smoke exhaust port 200 through screws. Like this, can realize the dismantlement connection, and the structure of screw fixation is relatively stable, can not cause and drop, improves the stability of being connected between net portion 300 and the oil absorption mouth 200.

Optionally, a strip-shaped mesh 302 is provided on the mesh portion 300. Like this, filter the oil smoke through bar mesh 302, improve the oil smoke percent of pass of oil net when the filter effect of multiplicable oil smoke, the oil smoke is more swift to bar mesh 302 department diffusion, can not take place easily to block up, has improved oil absorption cigarette efficiency.

Optionally, a plurality of strip-shaped mesh holes 302 are arranged on the net part 300, and the plurality of strip-shaped mesh holes 302 are arranged in parallel. Like this, make the more even and stable net portion 300 that passes of oil smoke that the air current drove, improve net portion 300 oil absorption cigarette volume, further improved oil absorption cigarette efficiency.

Optionally, strip-shaped partition plates 305 are formed between adjacent strip-shaped meshes 302, and the width of each strip-shaped partition plate 305 is less than or equal to twice the width of each strip-shaped mesh 302 and is greater than or equal to one half of the width of each strip-shaped mesh 302. Thus, the strip-shaped partition plate 305 is arranged at a position which is less than or equal to twice the width of the strip-shaped mesh holes 302 and is more than or equal to half the width of the strip-shaped mesh holes 302, so that the width of the strip-shaped partition plate 305 is in a reasonable range, the area ratio of the strip-shaped mesh holes 302 of the net part 300 to the whole oil net is maintained, the suction force of a formed negative pressure area is maintained, and the oil smoke absorption efficiency is improved better.

Alternatively, the width of the strip-shaped partition 305 is equal to the width of the strip-shaped mesh 302. Like this, make the area of bar mesh 302 about account for half of net portion 300 area, both can the efficient filter oil smoke, can keep sufficient suction again simultaneously, improve the lampblack absorber that uses this oil net to the filtration and the absorption effect of oil smoke, give better experience of user.

Optionally, the width of the strip-shaped mesh 302 is greater than or equal to 0.5 cm and less than or equal to 2 cm. Like this, the width setting of bar mesh 302 can keep bar mesh 302 to have better filtration adsorption effect to the oil smoke between 0.5 to 2 centimetres, forms sufficient suction through bar mesh 302 simultaneously, improves the lampblack absorber that uses this oil net to the filtration and the absorption effect of oil smoke, gives better experience of user.

Alternatively, the width of the strip-shaped mesh 302 is 1 cm. Like this, set up the width of bar mesh 302 into 1 centimetre and can keep the oil smoke adsorption and filtration effect of preferred, form sufficient suction through bar mesh 302 simultaneously, improve the lampblack absorber that uses this oil net to the filtration and the absorption effect of oil smoke, give better experience of user.

Alternatively, the mesh strips 302 connect opposite sides of the mouthpiece 200. The area ratio of the strip-shaped meshes 302 to the oil smoke suction port 200 is increased, so that the strip-shaped meshes 302 form enough ventilation volume, the area of the negative pressure area corresponding to the strip-shaped meshes 302 is increased, oil smoke on two sides of the oil smoke suction port 200 can be sucked, the oil smoke is prevented from escaping, the oil smoke trapping rate is increased, and the oil smoke suction volume is increased.

It can be understood that, since the net portion 300 is disposed in the smoke exhaust port 200, the distance between the first edge 301 and the other edge opposite to the first edge 301 is the distance between the two opposite sides of the smoke exhaust port 200.

Optionally, a plurality of oil smoke suction openings 200 sequentially arranged along a straight line are formed in the flat plate frame 100, and a net portion 300 is disposed in each oil smoke suction opening 200. Thus, by arranging a plurality of oil smoke suction ports 200 and arranging the net parts 300 in the corresponding oil smoke suction ports 200, the number of the net parts 300 is increased, thereby increasing the area of the negative pressure area and improving the oil smoke trapping rate.

Optionally, the distance between the smoke exhaust openings 200 at the two ends of the straight line and the flat frame 100 is less than or equal to 1 cm. Thus, the oil smoke suction port 200 can make full use of the installation space of the flat plate frame 100, so that the size of the oil smoke suction port 200 is the largest, the area of a negative pressure area is increased, and the oil smoke suction effect of the range hood adopting the flat plate oil net can be effectively improved.

Optionally, the smoke exhaust port 200 is a rectangular structure. Therefore, the shape is more regular, the installation condition of the range hood is met, and the range hood is convenient to install.

Alternatively, the plurality of smoke exhaust openings 200 are arranged at equal intervals. Therefore, the mutual influence among the negative pressure areas formed among the oil smoke suction ports 200 is more balanced, the stability of the whole negative pressure area is kept, and the oil smoke suction efficiency is improved.

Optionally, the mesh portion 300 comprises: a first wire section 303 and a second wire section 304; the first net part 303 and the second net part 304 are respectively arranged in two adjacent oil smoke sucking openings 200, and the first edge 301 of the first net part 303 is installed opposite to the first edge of the second net part 304. Thus, a symmetrical negative pressure region is formed between the first net part 303 and the second net part 304, the negative pressure regions on both sides are prevented from being influenced with each other, the stability of the whole negative pressure region is maintained, the oil smoke is diffused more smoothly to the net part 300, and the oil smoke diffused to both sides of the oil net is gathered and sucked into the net part 300 by the net part 300, so that the oil smoke is prevented from escaping.

A negative pressure region distribution diagram is formed at the lower side of the net part 300, as shown in a negative pressure curve 500 shown in fig. 4, wherein, because the arc-shaped bulge of the first net part 303 is deviated towards the first side of the first net part 303, the radian near the first side is larger, the wind direction flowing through the first net part is changed, the inclination angle of the wind direction is larger, and wind can be induced from one side of the lower side of the first net part 303 opposite to the first side, so that the negative pressure region is deviated towards the direction opposite to the first side, similarly, the negative pressure region formed at the lower side of the second net part 304 is also deviated towards the direction opposite to the first side, the area of the whole negative pressure region is increased, the overlapping of the negative pressure regions formed by the first net part 303 and the second net part 304 is smaller, the overlapping pressure of the negative pressure regions is similar to the pressure at the two sides of the overlapping region, the problem that the negative pressure at the two sides with larger negative pressure is smaller at the middle overlapping region is solved, and the pressure of the negative pressure region formed by the prior art is more balanced, thereby improving the gathering and absorbing effect of the oil smoke.

Optionally, the net part 300 and the flat bezel 100 are integrally formed. Like this, not only structurally simpler, easy to assemble, integrated into one piece structure is structurally more stable moreover, guarantees that net portion 300 and dull and stereotyped frame 100 are difficult to take place the offset after the installation, promotes the stability of net portion 300 to wipe and maintain in the convenient use.

Optionally, there is a set interval 400 between the first and second net sections 303, 304. Therefore, the negative pressure area can be separated, the negative pressure area is prevented from being concentrated in the middle, the superposition of the negative pressure areas is reduced, the left and right subareas of the negative pressure area are formed, and the oil smoke trapping rate is further improved.

Optionally, the first and second net sections 303, 304 are in a centrosymmetric relationship. Therefore, a symmetrical negative pressure area is generated between the first net part 303 and the second net part 304, the stability of the whole negative pressure area is kept, the negative pressure areas on two sides are prevented from being unequal, oil smoke can be distributed to two sides along the middle position between the first net part 303 and the second net part 304, the distribution effect is improved, the oil smoke is better distributed to the net part 300, the fluency of air flow is improved, and the oil smoke absorption effect is further improved.

Optionally, the first mesh portion 303 and the second mesh portion 304 are symmetrical along a center line of the set interval 400. Thus, the whole net part 300 is in a symmetrical structure along the central line, oil smoke can be distributed to two sides from the central line part with the set interval 400, the oil smoke is better dredged to the net part 300, and the distribution effect is improved.

Alternatively, the first edge 301 of the first mesh portion 303 and the first edge of the second mesh portion 304 are both edges that are adjacent to the set interval 400. Thus, the first edge 301 of the first net part 303 is set at one side of the interval, the first edge of the second net part 304 is set at the other side of the interval, so that the lower side of the first net part 303 and the lower side of the second net part 304 both form negative pressure areas, the purpose of separating the negative pressure areas is achieved, the negative pressure areas form left and right subareas, the area of the negative pressure areas is increased, and the perfect smoking effect is achieved.

The set interval 400 is a plate-shaped structure integrally formed with the flat bezel 100, and the set interval 400 is a non-ventilation structure. I.e. the set interval 400, can be understood as a partition arranged between the first 303 and the second 304 wire section.

Alternatively, the interval 400 is set to be greater than or equal to one third of the width of the wire part 300 and less than or equal to the width of the wire part 300. Thus, the interval 400 is set to be larger than or equal to one third of the width of the net part 300, so that the interval 400 can separate the negative pressure area generated by the net part 300, the negative pressure area forms a left partition and a right partition, meanwhile, the interval 400 is set to be smaller than or equal to the width of the net part 300, and the negative pressure area formed by the net part 300 is contacted to form an integral negative pressure area, so that a negative pressure blank area is prevented from being formed at the interval 400, and the oil smoke absorption efficiency of the range hood using the oil net is further improved.

Alternatively, the interval 400 is set equal to one-half of the width of the wire part 300. Thus, the set interval 400 is set to be one third of the width of the net part 300, the purpose of separating the negative pressure regions can be effectively achieved, the left and right subareas of the negative pressure regions are ensured to be formed, the phenomenon that the middle negative pressure region is vacant due to too far interval between the separated negative pressure regions is avoided, the area of the negative pressure regions is effectively increased, the oil smoke suction capacity of the negative pressure regions is ensured, and the oil smoke trapping rate is further increased.

Alternatively, the sum of the widths of the first mesh part 303, the second mesh part 304 and the set interval 400 is equal to the width of the flat bezel 100, and the lengths of the first mesh part 303, the second mesh part 304 and the set interval 400 are equal to the length of the flat bezel 100. In this way, the first net part 303, the second net part 304 and the set interval 400 make full use of the space of the flat plate frame 100, so that the net part 300 can have a larger area, thereby increasing the area of the negative pressure region, preventing the oil smoke from escaping, and further improving the oil smoke collection rate.

The widths of the first net part 303, the second net part 304, the set interval 400 and the flat plate frame 100 are distances between the left side and the right side, and the lengths of the first net part 303, the second net part 304, the set interval 400 and the flat plate frame 100 are distances between the front side and the rear side.

Alternatively, the set interval 400 between the first and second net portions 303 and 304 is a convex structure opposite to the protruding direction of the arc-shaped protrusion. Thus, the set interval 400 can guide wind to the net part 300, reduce the wind resistance at the set interval 400, quickly diffuse the oil smoke to the first net part 303 and the second net part 304, improve the oil smoke passing efficiency, reduce the noise generated by airflow obstruction and achieve the purpose of reducing noise.

Alternatively, the height of the projection of the spacing 400 is set to be greater than or equal to 3 cm and less than or equal to 5 cm. Thus, the set interval 400 is matched with the net part 300 in structure, the installation structure is more coordinated, and the protruding height of the set interval 400 is too high, so that a large amount of oil stains are attached to the protruding part of the set interval 400 in the oil smoke diffusion process, frequent cleaning is needed, and the time and energy of a user are wasted; setting the protruding height of the interval 400 to be too low may decrease the efficiency of diffusing the soot under the constant interval toward the mesh part 300.

Optionally, the highest point of the arc-shaped protrusion is in a straight line and penetrates through two opposite side edges of the net part 300. Therefore, the highest points of the arc-shaped bulges are positioned on the same horizontal plane, the negative pressure area is enlarged, the form of the negative pressure area is more regular, the oil smoke positioned on two sides of the net part 300 can be stably diffused into the net part 300, the oil smoke is prevented from escaping, and the oil smoke trapping rate is improved.

Optionally, the line formed by the highest point of the arcuate projection is parallel to the first edge 301. Therefore, a stable and uniform negative pressure area is formed at the lower side of the net part 300, the distribution uniformity of the negative pressure area is improved, the stability of the whole negative pressure area is kept, oil smoke driven by airflow can uniformly and stably pass through the net part 300, and the oil smoke absorption efficiency is improved.

Optionally, the arcuate projection comprises: a first arc part 306 and a second arc part 307, wherein the first arc part 306 is positioned on one side of the highest point of the arc-shaped bulge; the second arc portion 307 is located at the other side of the highest point of the arc protrusion, and the radian is smaller than that of the first arc portion 306. Thus, the arc-shaped bulge is divided into the first arc part 306 and the second arc part 307 with different radians, so that negative pressure areas with different volumes are formed at the net part 300, the purpose of continuously separating the negative pressure areas is achieved, oil smoke can diffuse towards the net part 300 through multiple directions, namely, the oil smoke at the left side of the net part 300 can diffuse towards the position of the second radian of the net part 300 under the action of suction force and also diffuse towards the position of the first radian of the net part 300, similarly, the oil smoke at the right side of the net part 300 can diffuse towards the position of the first radian of the net part 300 under the action of suction force and diffuse towards the position of the second radian of the net part 300, the oil smoke trapping rate can be effectively improved, and the perfect smoking effect of no smoke leakage and no smoke leakage is achieved.

Optionally, the arc of the second arc portion 307 is less than the arc of the first arc portion 306 and greater than or equal to one-half of the arc of the first arc portion 306. Therefore, the radian of the second arc part 307 relative to the first arc part 306 is not too large or too small, which affects the stability of oil smoke diffusion, and the first arc part 306 and the second arc part 307 are more harmonious in structure, thereby reducing the mutual influence between the negative pressure region at the second arc part 307 and the negative pressure region at the first arc part 306, and making the oil smoke more stable when diffusing to the positions of the first arc part 306 and the second arc part 307 of the net part 300, thereby achieving better smoking effect.

Optionally, an end of the first arc portion 306 away from the highest point of the arc protrusion and an end of the second arc portion 307 away from the highest point of the arc protrusion are on the same plane. Thus, the left and right sides of the net 300 are positioned on the same plane, preventing the left or right side of the net 300 from blocking the diffusion of the soot into the net 300, and improving the smoking efficiency of the net 300.

Optionally, the height of the highest point of the arc-shaped protrusion of the net part 300 protruding relative to the flat plate frame 100 is greater than or equal to 3 cm, and less than or equal to 8 cm. Thus, the height of the arc-shaped convex highest point of the net part 300 protruding relative to the flat plate frame 100 is controlled within the range of 3-8 cm, a certain space is formed between the arc-shaped convex highest point and the horizontal direction of the flat plate frame 100, namely, a negative pressure area with a certain volume is formed between the arc-shaped convex highest point and the horizontal direction of the flat plate frame 100, so that the net part 300 can suck the oil smoke diffused to the two sides of the net part while the volume of the whole negative pressure area is increased, the oil smoke is prevented from escaping, the oil smoke trapping rate is improved, and the oil smoke trapping efficiency of the net part 300 is reduced when the height of the arc-shaped convex highest point of the net part 300 protruding relative to the flat plate frame 100 is too large or too small.

The embodiment provides a range hood. An oil screen comprising any of the above.

Like this, can set up the arc arch through the net part 300 department at the oil net, change the negative pressure region of oil net lower part, make the negative pressure region to the skew of both sides to increase the area of negative pressure region, negative pressure region and oil smoke diffusion path phase-match can effectively improve the smoking effect of the lampblack absorber that adopts dull and stereotyped oil net.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. An oil screen, comprising:

the flat frame is provided with an oil smoke suction port;

the net part is arranged in the oil smoke suction opening and is provided with an upward arc-shaped bulge;

it is characterized in that the preparation method is characterized in that,

the highest point of the arc-shaped bulge deviates to the first edge of the net part, and the height of the highest point of the arc-shaped bulge of the net part relative to the projection of the flat plate frame is greater than or equal to 3 cm and less than or equal to 8 cm.

2. The oil screen as claimed in claim 1, wherein a plurality of said oil smoke sucking openings are arranged in a straight line on said flat frame, and each of said oil smoke sucking openings has said screen portion.

3. The oil screen of claim 2, wherein the screen portion comprises:

a first wire section and a second wire section;

the first net part and the second net part are respectively arranged in two adjacent oil smoke suction openings, and the first edge of the first net part and the first edge of the second net part are oppositely arranged.

4. The oil screen of claim 3, wherein the first screen portion and the second screen portion have a set spacing therebetween.

5. The oil screen of claim 4, wherein the set interval is greater than or equal to one third of the width of the screen portion and less than or equal to the width of the screen portion.

6. The oil screen of claim 4, wherein the spacing between the first screen portion and the second screen portion is a convex structure opposite to the convex direction of the arc-shaped protrusion.

7. An oil screen according to any one of claims 1 to 6, wherein the peaks of the arcuate projections are in line and extend through opposite sides of the screen portion.

8. The oil screen of any one of claims 1 to 6, wherein the arcuate projections comprise:

the first arc part is positioned on one side of the highest point of the arc-shaped bulge;

the second arc part is positioned on the other side of the highest point of the arc-shaped bulge, and the radian of the second arc part is smaller than that of the first arc part.

9. A range hood, characterized by comprising an oil screen according to any one of claims 1 to 8.

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