CN111237828A - Oil screen of range hood - Google Patents
Oil screen of range hood Download PDFInfo
- Publication number
- CN111237828A CN111237828A CN201811446887.1A CN201811446887A CN111237828A CN 111237828 A CN111237828 A CN 111237828A CN 201811446887 A CN201811446887 A CN 201811446887A CN 111237828 A CN111237828 A CN 111237828A
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- oil
- net
- screen
- oil screen
- columns
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- 239000006096 absorbing agent Substances 0.000 claims 1
- 239000006233 lamp black Substances 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 13
- 239000000779 smoke Substances 0.000 description 12
- 230000000630 rising effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses an oil screen of a range hood, which comprises a first oil screen and a second oil screen, wherein the second oil screen is arranged above the first oil screen, oil guide columns are respectively formed on the first oil screen and the second oil screen, a gap for allowing air to pass through is formed between every two adjacent oil guide columns, and the oil guide columns are of a concave cambered surface structure with upward openings. According to the oil screen, the oil guide column is designed to be the concave cambered surface structure with the upward opening, the cambered surface structure is more favorable for reflecting and refracting noise blocking, and meanwhile, the cambered surface structure has small resistance to gas.
Description
Technical Field
The invention relates to an oil screen, in particular to an oil screen with a noise reduction function.
Background
When a multi-wing centrifugal fan arranged in the range hood runs, generated noise is transmitted into a room through the following 3 ways: 1. noise enters the room from the inlet through the air duct of the range hood; 2. noise is reflected by the wall surface of the air duct and enters the room through the air duct inlet; 3. the noise is transmitted into the room through the outlet of the air duct. Through tests, the noise at the inlet of the oil screen is 13dB greater than the noise in the front, back, left and right directions. Therefore, the noise at the inlet of the range hood is reduced, and the noise of the range hood can be reduced to a great extent. The invention provides an oil screen with a noise reduction function, which mainly solves the technical problem of the invention.
Disclosure of Invention
The invention provides an oil screen which can reflect noise and reduce the noise transmitted into a room, aiming at solving the technical problem of high noise of a fan of the existing range hood.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an oil net, includes first oil net and second oil net, the second oil net sets up first oil net top, first oil net and second oil net are formed with respectively and lead the oil column, have the clearance that holds the air and pass through between the adjacent two oil columns of leading, it is the concave cambered surface structure that the opening faces upwards to lead the oil column.
Furthermore, the oil guiding columns of the first oil net and the second oil net are distributed in a staggered tooth manner.
Further, the cross section of the oil guide column is parabolic, the parabolic equation is x =2py, and the value range of p is 1.1 mm-1.8 mm.
Furthermore, the width of the mouth of the oil guide column is L, and the distance between the two oil guide columns is 0.9L-1.1L, wherein L is more than 0.
Furthermore, the width of the mouth of the oil guide column is L, and the distance between the first oil net and the second oil net is 7L-1.1L, wherein L is more than 0
Furthermore, a circle of closed oil groove is formed below the first oil net, and oil dropping from the first oil net falls into the oil groove.
Further, the first oil net and the second oil net are of a plane structure, a frustum-shaped structure or an inverted frustum-shaped structure.
Furthermore, when the first oil screen and the second oil screen are of frustum-shaped structures, the lower end of the first oil screen is turned outwards to form an outward turned edge, the lower end of the second oil screen is provided with a circle of vertical edges, the vertical edges are lapped on the outward turned edge, a plurality of oil guide holes are formed in the outward turned edge, and the orthographic projections of the oil guide holes facing the plane where the oil grooves are located in the oil grooves.
Furthermore, at least one boss with internal threads is formed on the upper surface of the outward turning edge, connecting lugs which are arranged in one-to-one correspondence to the bosses are arranged on the vertical edge, screw holes are formed in the connecting lugs, and screws penetrate through the screw holes and are screwed into the internal threads of the bosses.
Furthermore, a filter screen is arranged between the first oil net and the second oil net.
Compared with the prior art, the invention has the advantages and positive effects that: according to the oil screen, the oil guide column is designed into the concave cambered surface structure with the upward opening, the cambered surface structure is more favorable for reflecting, refracting and blocking noise, when the range hood works, noise sound waves generated by the fan are emitted to the reflecting wall surface of the first oil screen, most of the noise sound waves are reflected back to the air channel through the wall surface, part of the noise sound waves reach the second oil screen through the first oil screen and are reflected by the reflecting wall surface of the second oil screen, only a small amount of sound waves enter a room, and the noise can be effectively reduced. Meanwhile, the arc-shaped structure has small resistance to gas, the rising gas flow firstly enters the first oil net and moves obliquely upwards along the outer surface of the oil guide column, when the rising gas flow meets the outer surface of the oil guide column of the second oil net, the gas flow turns for the second time, one part of the rising gas flow moves obliquely upwards along the outer surface of the oil guide column of the second layer and is sucked into the main fan, and the other part of the rising gas flow flows to the inner surface of the oil guide column of the first layer of oil net and continues upwards after being swirled and is sucked into the main fan. Through such gas motion route, increased the area of contact of oil smoke gas and oil net oil guide column, fluid and air separation's effect is better, and the oil that separates drips can be followed oil guide column and led all around, directly through oil piping system, drips into in the oil cup, does not have the condition of perforation oil drip.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an oil screen of a range hood, which is provided by the invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is an enlarged view of section C of FIG. 1;
FIG. 5 is a cross-sectional view of the oil rail of FIG. 2;
FIG. 6 is a graph of a simulation of the gas flow of the oil column of FIG. 5;
FIG. 7 is a cross-sectional view of the oil deflection column of the first and second oil screens of FIG. 2;
FIG. 8 is a graph of a simulation of the gas flow of the oil column of FIG. 7;
FIG. 9 is a schematic structural diagram of a range hood oil screen according to yet another embodiment of the present invention;
fig. 10 is a schematic structural diagram of another embodiment of an oil screen of a range hood provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment provides a range hood oil screen, as shown in fig. 1 to 5, the range hood oil screen includes a first oil screen 11 and a second oil screen 12, the second oil screen 12 is disposed above the first oil screen 11, the first oil screen 11 has an oil guide column 110, the second oil screen 12 has an oil guide column 120, a gap for allowing air to pass through is formed between two adjacent oil guide columns, a first gap 111 is formed between two adjacent oil guide columns of the first oil screen 11, a second gap 121 is formed between two adjacent oil guide columns of the second oil screen 12, and both the oil guide column of the first oil screen 11 and the oil guide column of the second oil screen 12 are of a concave arc surface structure with an upward opening. This oil net is through leading the oil column design to the concave arc surface structure that the opening is up, arc surface structure more is favorable to reflection and refraction to block the noise, the arc is minimum to gaseous resistance simultaneously, the range hood during operation, the noise sound wave that the fan produced shoots into the oil column of leading of first oil net 11 after, most reflects back the wind channel through the cambered surface of the oil column of leading of first oil net 11, part noise reachs the second oil net through first clearance 111, reflect by the cambered surface of the oil column of leading of second oil net, the sound wave that is reflected returns the wind channel through first clearance reflection, only a small amount of sound wave gets into indoorly through second clearance 112 at last, can effectively reduce the noise. As shown in fig. 6, the part of the air flow rising upwards directly passes through the gap between the oil guiding columns, and the other part rises to the oil guiding columns.
The oil guiding columns of the first oil net 11 and the second oil net 12 are distributed in a staggered teeth manner, as shown in fig. 7 and 8, the air flow moves obliquely upward along the arc-shaped outer surface of the oil guiding columns, the air flow rising upward first passes through the first oil net 11, a part of the air flow rises to the oil guiding columns of the first oil net, the air flow moves obliquely upward along the arc-shaped outer surface of the oil guiding columns and continues rising through the first gap 111, another part of the air flow directly passes through the first gap 111 and directly passes through the first oil net 11, because the oil guiding columns of the first oil net 11 and the oil guiding columns of the second oil net 12 are distributed in a staggered teeth manner, the part of the air flow meets the oil guiding columns of the second oil net 12 after passing through the first gap 111, the air flow makes secondary turning when meeting the arc-shaped outer surface of the oil guiding columns of the second oil net, a part of the air flow moves obliquely upward along the shape of the oil guiding columns of the second oil net, and is sucked into the main fan, and another part of the air flow to the inner surface of the oil guiding columns of, after the convolution is generated, the air is continuously upwards sucked into the main fan. Through such gas motion route, increased the area of contact of oil smoke gas and oil net oil guide column, fluid and air separation's effect is better, and the oil that separates drips can be followed oil guide column and led all around, directly through oil piping system, drips into in the oil cup, does not have the condition of perforation oil drip.
As shown in fig. 5, the cross section of the oil guiding column is preferably parabolic, wherein the oil guiding column refers to the oil guiding column of the first oil network 11 and/or the oil guiding column of the second oil network 12, and when the oil guiding column of the first oil network 11 and the oil guiding column of the second oil network 12 are both parabolic, the effect is best, and the parabolic equation is x =2py, wherein the x axis is along the horizontal direction and perpendicular to the length direction of the oil guiding column, the y axis is along the vertical direction and passes through the central axis of the oil guiding column, and the value of p ranges from 1.1 mm to 1.8 mm. Experiments show that the shape of the oil guide column arranged according to the parabolic equation has small resistance to gas compared with a simple arc or a straight line, and is more favorable for blocking noise through reflection and refraction.
In combination with the size of the range hood, the size of the oil screen is not too large or too small, as shown in fig. 5 and 7, and in order to facilitate the processing of the oil screen and reduce the resistance of the oil screen to the air flow in practice, the optimal value range of the opening size L of the parabola is 6mm-8 mm. The oil fume separation device can not only leave enough clearance to prevent wind, but also ensure enough contact area with oil fume to separate the oil fume.
The first oil net 11 and the second oil net 12 may be of a planar structure, a frustum-shaped structure, or an inverted frustum-shaped structure as shown in fig. 10, and may be designed according to a selected structure of the smoke collecting hood of the range hood, when the oil net is of the frustum-shaped structure or the inverted frustum-shaped structure, the oil net at least has 4 inclined side surfaces, each side surface is provided with a plurality of oil guiding columns in a row direction, the aforementioned gap between two adjacent oil guiding columns for allowing oil smoke to pass through is between two adjacent oil guiding columns on the same oil net side surface, and the gap between two adjacent oil guiding columns on different side surfaces is a connecting portion of the two side surfaces, and no gap needs to be formed. The lengths of the oil guiding columns at different positions on the same plane can be different, and the oil guiding columns are reasonably arranged according to the shape of the plane on which the oil guiding columns are located.
The oil guiding column has two side arc edges, the end portions of two adjacent arc edges are connected by a connecting edge, the two arc edges are respectively located on two adjacent oil guiding columns, as shown in fig. 2, taking the first oil network as an example, the oil guiding column 110 is adjacent to the oil guiding column 112, the oil guiding column 110 has arc edges 110a and 110b, the oil guiding column 112 has arc edges 112a and 112b, the arc edge 110b is adjacent to the arc edge 112a, and the two arc edges are respectively located on two different oil guiding columns (the oil guiding column 110 and the oil guiding column 112), the arc edge 110b is connected with the arc edge 112a by the connecting edge 115, as shown in fig. 2, both ends of the arc edge are connected with the connecting edge, so that the two adjacent arc edges and the end edges at both ends form a closed structure, a better guiding effect on the oil smoke can be achieved, meanwhile, the contact area with the oil smoke can be increased, and the oil smoke can be separated to the maximum.
Preferably, as shown in fig. 5, the distance between two adjacent oil guiding columns is M, and the optimal value range of M is 0.9L-1.1L. The distance between two adjacent oil guide columns is also the width of the gap port part between the two oil guide columns. The range of the width value can not generate larger wind resistance, but also ensure the cambered surface area of the oil guide column to be more fully contacted with the oil smoke.
The optimal distance between the first oil screen 11 and the second oil screen 12 is 7L-1.1L, wherein L is the width of the mouth of the oil guide column.
Taking the oil screens with the frustum-shaped structures as an example, the oil guiding columns of the first oil screen 11 and the second oil screen 12 are in contact with oil smoke to agglutinate the oil in the oil smoke into oil droplets which flow along the oil guiding columns, a circle of closed oil grooves 13 are arranged below the first oil screen 11, and the oil droplets flowing down from the first oil screen 11 fall into the oil grooves 13 to be prevented from dripping on the table top of the cabinet to increase the cleaning load.
Still taking the first oil screen and the second oil screen as frustum-shaped structures as an example, the lower end of the first oil screen 11 is turned over outwards to form an outward turned edge 113, the lower end of the second oil screen 12 has a circle of vertical edges 122, the vertical edges 122 of the second oil screen 12 are lapped on the outward turned edge 113, the outward turned edge 113 is provided with a plurality of oil guiding holes 114, and the orthographic projections of the oil guiding holes facing the plane where the oil groove 13 is located are located in the oil groove 13. The oil drops agglutinated by the second oil screen 12 flow downwards along the oil guide column, because the vertical edge 122 is lapped on the outward turned edge 113, the oil drops of the second oil screen continue to flow downwards along the vertical edge to the outward turned edge 113, meanwhile, the oil drops agglutinated by the first oil screen flow downwards along the oil guide column to the outward turned edge 113, the oil drops fall into the oil tank 13 through the oil guide holes, and the number and the size of the oil guide holes are determined according to the size and the shape of the first oil screen 11, which is not limited herein. The periphery of the oil guide hole can be lower than other positions of the outward flanging 113, and oil drops are favorably collected.
The second oil net 12 is fixed on the smoke collecting cover, the first oil net 11 can be fixed with the smoke collecting cover and can also be fixed with the second oil net, when the first oil net 11 is fixed with the second oil net 12, at least one boss 116 with internal threads is formed on the upper surface of the outward turning edge 113, the vertical edge 122 is provided with a connecting lug 123 which is in one-to-one correspondence with the boss 116, the connecting lug 123 is provided with a screw hole 124, and a screw penetrates through the screw hole 124 and is screwed into the internal threads of the boss 116, so that the first oil net 11 is fixed with the second oil net. The boss 116 may be fixed to the first oil screen 11 by welding or caulking. The screw holes 124 may be through holes or countersunk holes, the number of the screw holes 124 is the same as the number of the bosses 116, and the number of the bosses 116 may be determined according to the size and shape of the outward turned edge 113 while avoiding the oil guide hole 114.
Between the first oil screen 11 and the second oil screen 12, a filter screen 14 may be added according to the requirement, and the form of the filter screen 14 may be various, such as activated carbon, a metal wire mesh or a metal mesh plate.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A lampblack absorber oil net which characterized in that: including first oil net and second oil net, second oil net sets up first oil net top, a plurality of oil columns of leading of having arranged in proper order on one or more sides of first oil net and second oil net have between the adjacent two oil columns to hold the clearance that the air passes through, lead the oil column and be the concave cambered surface structure that the opening is up.
2. The oil screen of claim 1, wherein: and the oil guiding columns of the first oil net and the second oil net are distributed in a staggered tooth manner.
3. The oil screen of claim 1, wherein: the cross section of the oil guide column is parabolic, the parabolic equation is x =2py, and the value range of p is 1.1 mm-1.8 mm.
4. The oil screen of claim 3, wherein: the width of the mouth of each oil guide column is L, the distance between the two oil guide columns is 0.9L-1.1L, and L is more than 0.
5. The oil screen of claim 3, wherein: the width of the mouth of the oil guide column is L, and the distance between the first oil net and the second oil net is 7L-1.1L, wherein L is larger than 0.
6. Oil screen according to any of claims 1-5, characterized in that: the oil tank is characterized in that a circle of closed oil groove is formed below the first oil net, and oil dropping from the first oil net falls into the oil groove.
7. Oil screen according to any of claims 1-5, characterized in that: the first oil net and the second oil net are of a plane structure, a frustum-shaped structure or an inverted frustum-shaped structure.
8. The oil screen of claim 7, wherein: when the first oil screen and the second oil screen are of frustum-shaped structures, the lower end part of the first oil screen is turned outwards to form an outward turned edge, the lower end part of the second oil screen is provided with a circle of vertical edges, the vertical edges are lapped on the outward turned edge, a plurality of oil guide holes are formed in the outward turned edge, and the oil guide holes face the orthographic projection of the plane where the oil groove is located and are located in the oil groove.
9. The oil screen of claim 8, wherein: the upper surface of the outward flanging is provided with at least one boss with internal threads, the vertical edge is provided with connecting lugs which are arranged in one-to-one correspondence with the bosses, the connecting lugs are provided with screw holes, and screws penetrate through the screw holes and are screwed into the internal threads of the bosses.
10. Oil screen according to any of claims 1-5, characterized in that: and a filter screen is also arranged between the first oil net and the second oil net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811446887.1A CN111237828A (en) | 2018-11-29 | 2018-11-29 | Oil screen of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811446887.1A CN111237828A (en) | 2018-11-29 | 2018-11-29 | Oil screen of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111237828A true CN111237828A (en) | 2020-06-05 |
Family
ID=70863763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811446887.1A Pending CN111237828A (en) | 2018-11-29 | 2018-11-29 | Oil screen of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111237828A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936565A (en) * | 2010-09-08 | 2011-01-05 | 樱花卫厨（中国）股份有限公司 | Oil screen device of range hood |
| CN102261686A (en) * | 2010-05-25 | 2011-11-30 | 樱花卫厨（中国）股份有限公司 | Oil filter device for range hood |
| US20180163975A1 (en) * | 2015-09-08 | 2018-06-14 | Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd. | Range hood |
| CN108253472A (en) * | 2016-12-29 | 2018-07-06 | 青岛海尔洗碗机有限公司 | A kind of novel oil smoke oil screen |
| CN209877024U (en) * | 2018-11-29 | 2019-12-31 | 青岛海尔智能技术研发有限公司 | Oil screen of range hood |
-
2018
- 2018-11-29 CN CN201811446887.1A patent/CN111237828A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261686A (en) * | 2010-05-25 | 2011-11-30 | 樱花卫厨（中国）股份有限公司 | Oil filter device for range hood |
| CN101936565A (en) * | 2010-09-08 | 2011-01-05 | 樱花卫厨（中国）股份有限公司 | Oil screen device of range hood |
| US20180163975A1 (en) * | 2015-09-08 | 2018-06-14 | Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd. | Range hood |
| CN108253472A (en) * | 2016-12-29 | 2018-07-06 | 青岛海尔洗碗机有限公司 | A kind of novel oil smoke oil screen |
| CN209877024U (en) * | 2018-11-29 | 2019-12-31 | 青岛海尔智能技术研发有限公司 | Oil screen of range hood |
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