CN108006737B - Fume exhauster - Google Patents
Fume exhauster Download PDFInfo
- Publication number
- CN108006737B CN108006737B CN201710424019.2A CN201710424019A CN108006737B CN 108006737 B CN108006737 B CN 108006737B CN 201710424019 A CN201710424019 A CN 201710424019A CN 108006737 B CN108006737 B CN 108006737B
- Authority
- CN
- China
- Prior art keywords
- oil filter
- filter screen
- rectifying plate
- oil
- range hood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003517 fume Substances 0.000 title description 10
- 239000000779 smoke Substances 0.000 claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 8
- 238000001914 filtration Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010411 cooking Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The utility model provides a range hood, includes collection petticoat pipe, rectifying plate and oil filter screen, forms the periphery sunction inlet of oil smoke between the periphery of rectifying plate and the collection petticoat pipe, its characterized in that: the oil filter screen is arranged on the rectifying plate, and the oil filter screen is positioned in the center of the rectifying plate to form a central suction inlet of oil smoke. The utility model has the advantages that: the oil filter screen of the range hood is arranged in the center of the rectifying plate to form a central suction inlet of oil smoke, under the working condition of small oil smoke, most of oil smoke can be sucked into the range hood from the middle oil filter screen according to the shortest path, and when large oil smoke or oil smoke escapes, the oil smoke is outwards diffused to the edge of the rectifying plate, but because the periphery of the rectifying plate is also distributed with stronger negative pressure, the oil smoke can be sucked from a round of suction inlet around, the oil smoke can be continuously pulled and escaped, and the air inlet area of the oil filter screen and the external dimension of the rectifying plate are reasonably set, so that the negative pressure distribution of the middle suction inlet and the peripheral suction inlet can be considered, thereby greatly improving the user experience.
Description
Technical Field
The utility model relates to a range hood.
Background
The traditional range hood sucks smoke from the middle oil filter screen, and has poor effect on the cage for escaping the smoke; later evolves the surrounding air intake of rectification plate type, although the absorbing and pulling ability to escape the oil smoke to the periphery can be enhanced by adopting the surrounding air intake, the path of the oil smoke is prolonged, and the oil smoke is easy to gather under the rectification plate in the large oil smoke environment, so that the user experience is influenced.
At present, the prior art discloses a range hood with a combined air inlet, as disclosed in China patent application with the application number 201611129969.4 (application publication number CN 106482192A), namely an L-shaped range hood with an upper air inlet and a lower air inlet, the range hood comprises a negative pressure source and a main body frame, the main body frame is of an inverted L shape, an air inlet is arranged on the main body frame, a cavity for air to flow is arranged in the main body frame, the negative pressure source is arranged on the main body frame, the air inlet is used for sucking air by generating negative pressure, the sucked air flows through the cavity, finally, the air is discharged from one end of the negative pressure source, the air inlet only comprises an upper air inlet and a lower air inlet, the lower air inlet is arranged on the concave surface of the L-shaped structure of the main body frame and is positioned at the lower part of the main body frame, a reflux groove is formed in the surface of the top part of the concave surface facing the main body frame, and the upper air inlet is arranged on the surface of the downward extending part of the main body frame, the range hood has good smoke sucking effect, and the effect of the range hood can be better prevented from overflowing and the effect on the smoke sucking effect of the bottom air outlet can be reduced. Although the above-mentioned L-type range hood also has a combined suction port, the combined suction port adopts an upper air inlet and a lower air inlet, and the combined suction cannot be performed for the air flow in the vicinity of the rectifying plate.
As another example, in a top-draft type range hood with a smoke guide plate disclosed in chinese patent No. 201420478315.2 (grant publication No. CN 204176710U), the range hood includes a smoke collecting hood and a smoke guide plate, an air inlet is provided on the smoke collecting hood, the smoke guide plate is arranged opposite to the air inlet of the smoke collecting hood, the smoke guide plate and the smoke collecting hood keep a predetermined distance to form a smoke channel, and a plurality of ventilation holes are provided on the smoke guide plate at positions near the left and right edges respectively. Although, this top-draft range hood is through setting up the ventilation hole after, the oil smoke air current except can follow the oil smoke passageway between smoke guide plate and the collection petticoat pipe and get into the smoke guide plate top and be inhaled in the collection petticoat pipe from the ventilation hole on the guide plate, has increased the air inlet area, has reduced the air inlet resistance of smoke guide plate to be favorable to improving amount of wind and noise reduction, but locates the ventilation hole both sides of smoke guide plate, can't follow the middle region air inlet of rectifying plate, and the top of rectifying plate is located to the oil filter screen of this range hood, and the ventilation hole itself on the rectifying plate does not play the effect of oil filtering.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a range hood which can not only enter air from the middle of a rectifying plate, but also enter air from the periphery of the rectifying plate.
The technical scheme adopted for solving the technical problems is as follows: the range hood comprises a fume collecting hood body, a rectifying plate and an oil filter screen, wherein a peripheral suction inlet for oil fume is formed between the periphery of the rectifying plate and the fume collecting hood body, and the range hood is characterized in that: the oil filter screen is arranged on the rectifying plate, and the oil filter screen is positioned in the center of the rectifying plate to form a central suction inlet of oil smoke.
As a preferable scheme, the oil filter screen is a first oil filter screen which is integrally concave upwards and is in an inverted bucket shape, the first oil filter screen is integrally positioned above the rectifying plate, a plurality of main air inlet holes are formed in the side wall of the first oil filter screen, a main oil receiving tongue protruding out of the inner wall of the first oil filter screen towards the inner cavity direction of the first oil filter screen is arranged at the bottom of the main air inlet holes, and the free end of the main oil receiving tongue extends obliquely upwards.
The main air inlets can have various distribution modes, preferably, the main air inlet holes are arranged in at least two rows on the side wall of the first oil filter screen, the main air inlet holes positioned on each row are uniformly distributed at intervals, and the main air inlet holes positioned on the adjacent rows are distributed in a staggered manner in the horizontal direction.
In order to increase the air inlet area of the oil filter screen, auxiliary air inlet holes are formed in the side wall of the first oil filter screen, and the auxiliary air inlet holes are in a strip shape and are transversely distributed at intervals at the lower part of the peripheral wall of the first oil filter screen.
In order to further improve the oil filtering effect of the oil filter screen, an auxiliary oil receiving tongue protruding out of the inner wall of the first oil filter screen towards the inner cavity direction of the first oil filter screen is arranged at the bottom of the auxiliary air inlet hole, and the free end of the auxiliary oil receiving tongue extends obliquely upwards.
Further preferably, the center of the rectifying plate is provided with a mounting hole, the edge of the mounting hole is provided with a flange extending upwards, a circle of blocking wall extends downwards around the bottom of the first oil filter screen, the first oil filter screen is mounted on the mounting hole, and the blocking wall is arranged on the outer side of the flange. Therefore, after the installation structure is adopted between the oil filter screen and the rectifying plate, oil drops can be prevented from dripping.
Further preferably, the lower edge of the baffle wall extends horizontally outwards to form a mounting sheet, and the rectifying plate is provided with an elastic pressing plate which is pressed on the mounting sheet.
As another preferable scheme, the oil filter screen is a second oil filter screen with a double-layer structure, the second oil filter screen comprises an upper oil filter screen and a lower oil filter screen which are parallel to each other and are of flat plate structures, the lower oil filter screen is arranged on the rectifying plate, and the upper oil filter screen is arranged above the rectifying plate.
In order to avoid the problem that oil drops are generated in the oil filter screen, the upper oil filter screen is provided with upper oil filter strips which are distributed in parallel at intervals, the lower oil filter screen is provided with lower oil filter strips which are distributed in parallel at intervals, and oil filtering holes between the upper oil filter strips fall onto the lower oil filter strips on the vertical projection surface of the lower oil filter screen.
Preferably, the range hood is a top-suction range hood.
Compared with the prior art, the utility model has the advantages that: the oil filter screen of the range hood is arranged on the rectifying plate, the oil filter screen is positioned in the center of the rectifying plate to form a central suction inlet of oil smoke, under the working condition of small oil smoke, most of oil smoke can be sucked into the range hood from the middle oil filter screen according to the shortest path, when large oil smoke or oil smoke escapes, the oil smoke is outwards diffused to the edge of the rectifying plate, but because the periphery of the rectifying plate is also distributed with stronger negative pressure, the oil smoke can be sucked from the periphery of the suction inlet, the cage is pulled to escape continuously, the air inlet area of the oil filter screen and the negative pressure distribution of the periphery suction inlet can be considered by reasonably setting the overall dimension of the rectifying plate, and therefore, the user experience is greatly improved.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a first embodiment of the present utility model;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
fig. 4 is a schematic structural diagram of a rectifying plate and a first oil filter screen according to a first embodiment of the present utility model;
FIG. 5 is an exploded perspective view of FIG. 4;
FIG. 6 is a schematic structural diagram of a second embodiment of the present utility model;
fig. 7 is a schematic structural diagram of a rectifying plate and a second oil filter screen according to a second embodiment of the present utility model;
fig. 8 is an exploded perspective view of fig. 7.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
Embodiment one:
as shown in fig. 1 to 5, the range hood in the present embodiment is a top-suction range hood, and includes a fume collecting hood 1, a rectifying plate 2 and a first oil filter screen 3, wherein a peripheral suction inlet for fume is formed between the periphery of the rectifying plate 2 and the fume collecting hood 1, the first oil filter screen 3 is disposed on the rectifying plate 2, and the first oil filter screen is located at the center of the rectifying plate 2 to form a central suction inlet for fume.
In this embodiment, the first oil filter screen 3 is concave upward and is in an inverted bucket shape, a plurality of main air intake holes 31 are opened on the side wall of the first oil filter screen 3, the main air intake holes 31 are arranged in at least two rows on the side wall of the first oil filter screen 3, and the main air intake holes 31 on each row are uniformly distributed at intervals, and the main air intake holes 31 on adjacent rows are distributed in a mutually staggered manner in the horizontal direction. The bottom of the main air inlet 31 is provided with a main oil receiving tongue 32 protruding from the inner wall of the first oil screen toward the inner cavity of the first oil screen, and the free end of the main oil receiving tongue 32 extends obliquely upward.
The side wall of the first oil filter screen 3 is also provided with auxiliary air inlet holes 33, and the auxiliary air inlet holes 33 are in a strip shape and are transversely distributed at intervals at the lower part of the peripheral wall of the first oil filter screen 3. The auxiliary air inlet holes 33 are at least two rows, and the auxiliary air inlet holes 33 positioned in adjacent rows are distributed in a staggered manner in the horizontal direction. The bottom of the auxiliary intake port 33 has an auxiliary catch 34 protruding toward the inner wall of the first oil screen 3 toward the inner wall of the first oil screen, and the free end of the auxiliary catch 34 extends obliquely upward.
The center of the rectifying plate 2 is provided with a mounting hole 21, the edge of the mounting hole 21 is provided with a flange 22 extending upwards, the whole first oil filter screen 3 is positioned above the rectifying plate 2, a circle of blocking wall 35 extends downwards around the bottom of the first oil filter screen 3, the first oil filter screen 3 is mounted on the mounting hole 21, and the blocking wall 35 is arranged on the outer side of the flange 22. In addition, the lower edge of the baffle wall 35 extends horizontally outward to form a mounting plate 36, and the elastic pressing plate 5 is mounted on the rectifying plate 2, and the elastic pressing plate 5 presses against the mounting plate 36, thereby fixing the first oil filter 3 to the rectifying plate 2. The first oil filter screen 3 may be fastened to the rectifying plate 2 by elastic fastening.
When the range hood works, the direction indicated by the arrow in fig. 2 is the flow direction of the oil smoke air flow, the upward air flow turns first, obliquely enters the main air inlet hole 31, and then moves upwards, namely, the air flow turns secondarily, and the air flow and oil drop separation process is similar to a multi-layer corrugated net. The oil fume turns around the main air inlet hole 31 for oil-liquid and air separation, so that oil drops can be led down along the upper surface wall of the first oil filter screen 3, and drop onto the main oil receiving tongue 32 of the main air inlet hole 31 in time in the flowing down process, so that no perforation oil drop exists. Finally, the oil drops adhering to the inner concave wall of the first oil filter 3 can flow into the oil cup 6 through the auxiliary oil receiving tongue 34 of the auxiliary air inlet 33
In addition, because the main air inlet hole 31 is slightly inclined upwards, when the sound wave of the pneumatic noise in the fan propagates out from the main air inlet hole 31, the sound wave does not directly propagate downwards, but is slightly inclined upwards, part of the sound wave can be counteracted in the front-back and left-right directions, meanwhile, the area of the rectifying plate 2 also has the effect of reflecting the noise, the direct outwards sound radiation is blocked, and the effective reflection porous combined noise reduction system can be formed by combining.
Embodiment two:
as shown in fig. 6 to 8, the oil filter screen of the range hood in the present embodiment adopts a double-layer structure of the second oil filter screen 4, the second oil filter screen 4 includes an upper oil filter screen 41 and a lower oil filter screen 42 that are parallel to each other, the upper oil filter screen 41 and the lower oil filter screen 42 are both flat screens, the lower oil filter screen 42 is provided on the rectifying plate 2, and the upper oil filter screen 41 is provided above the rectifying plate 2. In order to avoid that oil drops directly drop onto the cooking bench through the second oil filter screen 4, the upper oil filter screen 41 in this embodiment has upper oil filter sticks 411 distributed in parallel at intervals, the lower oil filter screen 42 has lower oil filter sticks 421 distributed in parallel at intervals, and oil filtering holes between the upper oil filter sticks 411 drop onto the lower oil filter sticks 421 on the vertical projection surface on the lower oil filter screen 42, so that the oil drops after passing through the oil filtering holes of the upper oil filter screen 41 do not directly drop onto the cooking bench, but drop onto the lower oil filter screen 42 first, and then can be guided from the lower oil filter screen 42 into the oil cup 6.
The foregoing is merely illustrative of the preferred embodiments of this utility model, and it will be appreciated by those skilled in the art that variations and modifications of this utility model can be made without departing from the principles of the utility model, and these are considered to be within the scope of the utility model.
Claims (8)
1. The utility model provides a range hood, includes collection petticoat pipe (1), rectifying plate (2) and oil filter screen, form the periphery sunction inlet of oil smoke between the periphery of rectifying plate (2) and collection petticoat pipe (1), its characterized in that: the oil filter screen is arranged on the rectifying plate (2), the oil filter screen is arranged at the center of the rectifying plate (2) to form a central suction inlet of oil smoke, the oil filter screen is a second oil filter screen (4) with a double-layer structure, the second oil filter screen (4) comprises an upper oil filter screen (41) and a lower oil filter screen (42) which are parallel to each other and are of flat plate structures, the lower oil filter screen (42) is arranged on the rectifying plate (2), the upper oil filter screen (41) is arranged above the rectifying plate (2), and the range hood is a top suction type range hood.
2. The range hood of claim 1, wherein: the oil filter screen is an inverted bucket-shaped first oil filter screen (3) which is integrally concaved inwards, the first oil filter screen (3) is integrally positioned above the rectifying plate (2), a plurality of main air inlet holes (31) are formed in the side wall of the first oil filter screen (3), a main oil receiving tongue (32) protruding out of the inner wall of the first oil filter screen towards the inner cavity direction of the first oil filter screen is arranged at the bottom of the main air inlet holes (31), and the free end of the main oil receiving tongue (32) extends obliquely upwards.
3. The range hood of claim 2, wherein: the main air inlet holes (31) are arranged in at least two rows on the side wall of the first oil filter screen (3), the main air inlet holes (31) positioned on each row are uniformly distributed at intervals, and the main air inlet holes (31) positioned on the adjacent rows are distributed in a staggered manner in the horizontal direction.
4. The range hood of claim 2, wherein: the side wall of the first oil filter screen (3) is also provided with auxiliary air inlet holes (33), and the auxiliary air inlet holes (33) are in a strip shape and are transversely distributed at intervals at the lower part of the peripheral wall of the first oil filter screen (3).
5. The range hood of claim 4, wherein: the bottom of the auxiliary air inlet hole (33) is provided with an auxiliary oil receiving tongue (34) protruding towards the inner wall of the first oil filter screen (3) in the inner cavity direction, and the free end of the auxiliary oil receiving tongue (34) extends obliquely upwards.
6. The range hood of claim 2, wherein: the center of the rectifying plate (2) is provided with a mounting hole (21), the edge of the mounting hole (21) is provided with a flanging (22) extending upwards, a circle of blocking wall (35) extends downwards around the bottom of the first oil filter screen (3), the first oil filter screen (3) is mounted on the mounting hole (21), and the blocking wall (35) is arranged on the outer side of the flanging (22).
7. The range hood of claim 6, wherein: the lower edge of the baffle wall (35) horizontally extends outwards to form a mounting sheet (36), the rectifying plate (2) is provided with an elastic pressing plate (5), and the elastic pressing plate (5) is pressed on the mounting sheet (36).
8. The range hood of claim 1, wherein: the upper oil filter screen (41) is provided with upper oil filter strips (411) which are distributed in parallel at intervals, the lower oil filter screen (42) is provided with lower oil filter strips (421) which are distributed in parallel at intervals, and the vertical projection surfaces of oil filter holes between the upper oil filter strips (411) on the lower oil filter screen (42) fall onto the lower oil filter strips (421).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424019.2A CN108006737B (en) | 2017-06-07 | 2017-06-07 | Fume exhauster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424019.2A CN108006737B (en) | 2017-06-07 | 2017-06-07 | Fume exhauster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108006737A CN108006737A (en) | 2018-05-08 |
| CN108006737B true CN108006737B (en) | 2024-01-16 |
Family
ID=62047589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710424019.2A Active CN108006737B (en) | 2017-06-07 | 2017-06-07 | Fume exhauster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108006737B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019174079A (en) * | 2018-03-29 | 2019-10-10 | 株式会社ハーマン | Range hood |
| CN110657470B (en) * | 2018-06-29 | 2022-12-27 | 博西华电器（江苏）有限公司 | Smoke ventilator, be used for smoke guide plate of smoke ventilator |
| CN111434993B (en) * | 2019-01-11 | 2022-06-21 | 宁波方太厨具有限公司 | Fume exhaust fan |
| CN111306593B (en) * | 2020-03-16 | 2022-03-18 | 宁波方太厨具有限公司 | Range hood and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3126576U (en) * | 2005-08-22 | 2006-11-02 | 城昌企業股▲分▼有限公司 | Improved structure of ventilation fan |
| CN201043772Y (en) * | 2006-10-11 | 2008-04-02 | 浙江苏泊尔家电制造有限公司 | Oil leakage-proof fume exhauster net cover |
| CN101737834A (en) * | 2008-11-20 | 2010-06-16 | 正太平洋(中国)厨具有限公司 | Outer oil collection structure of oil screen of European-style range hood |
| CN201697198U (en) * | 2010-05-25 | 2011-01-05 | 海尔集团公司 | Oil screen of range hood |
| CN104289049A (en) * | 2014-11-04 | 2015-01-21 | 广东美的厨房电器制造有限公司 | Filtering screen and range hood |
| CN206959059U (en) * | 2017-06-07 | 2018-02-02 | 宁波方太厨具有限公司 | A kind of range hood |
-
2017
- 2017-06-07 CN CN201710424019.2A patent/CN108006737B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3126576U (en) * | 2005-08-22 | 2006-11-02 | 城昌企業股▲分▼有限公司 | Improved structure of ventilation fan |
| CN201043772Y (en) * | 2006-10-11 | 2008-04-02 | 浙江苏泊尔家电制造有限公司 | Oil leakage-proof fume exhauster net cover |
| CN101737834A (en) * | 2008-11-20 | 2010-06-16 | 正太平洋(中国)厨具有限公司 | Outer oil collection structure of oil screen of European-style range hood |
| CN201697198U (en) * | 2010-05-25 | 2011-01-05 | 海尔集团公司 | Oil screen of range hood |
| CN104289049A (en) * | 2014-11-04 | 2015-01-21 | 广东美的厨房电器制造有限公司 | Filtering screen and range hood |
| CN206959059U (en) * | 2017-06-07 | 2018-02-02 | 宁波方太厨具有限公司 | A kind of range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108006737A (en) | 2018-05-08 |
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