CN108240653B - Fume exhauster - Google Patents
Fume exhauster Download PDFInfo
- Publication number
- CN108240653B CN108240653B CN201711084983.1A CN201711084983A CN108240653B CN 108240653 B CN108240653 B CN 108240653B CN 201711084983 A CN201711084983 A CN 201711084983A CN 108240653 B CN108240653 B CN 108240653B
- Authority
- CN
- China
- Prior art keywords
- air inlet
- oil filtering
- fan
- plate
- 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.)
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Links
- 239000003517 fume Substances 0.000 title claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 47
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000004519 grease Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 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
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
Abstract
The utility model provides a range hood, includes fan dustcoat and locates the collection petticoat pipe of fan dustcoat below, and fan dustcoat internally mounted has centrifugal fan, its characterized in that: the fan housing and the fume collecting hood are internally provided with a T-shaped inner cavity together, the centrifugal fan is provided with a left air inlet and a right air inlet, the lower part of the fume collecting hood is provided with a wide air inlet, the left end and the right end of the wide air inlet are respectively adjacent to the corresponding side edges of the fume collecting hood, and a first oil filtering plate with a shape matched with that of the wide air inlet is arranged. The utility model has the advantages that: the fan housing and the fume collecting hood of the range hood are internally provided with the T-shaped inner cavity negative pressure diffusion area which is matched with the centrifugal fan with left and right double air inlets and the wide air inlet on the fume collecting hood, so that the distance between the left and right negative pressure areas can be effectively prolonged to effectively enlarge the area of the negative pressure areas, the area of the negative pressure areas actually used by a user is enough to cover the operation space of the whole kitchen range, the air inlet air speed is uniformly distributed, and further effective noise reduction can be realized.
Description
Technical Field
The utility model relates to a range hood.
Background
The current near-suction type range hood is developed in the directions of reducing noise, improving air quantity and improving grease separation degree, but noise, air quantity and grease separation degree are a pair of contradictory factors, and the noise is necessarily larger as the air quantity is larger by improving the motor power and increasing the rotating speed, and the power consumption is also larger as the noise is necessarily larger, and the grease separation degree is higher by only using a denser oil filter screen plate, so that the wind resistance is increased, the air quantity is influenced, and the noise is also increased. Therefore, in the relation among the three components, the general range hood can only seek one folding point, and has the effects of three aspects, or only makes the effects of two factors outstanding, and sacrifices the third factor. The near-suction type range hood comprises a front panel, a wind cabinet and a smoke collecting cavity, wherein an air inlet is formed in the front panel, a solid diversion door is arranged at the air inlet, a gap is reserved between the periphery of the solid diversion door and the front panel of the near-suction type range hood, a row of wind inlet holes are formed in the lower portion of the solid diversion door, and an oil filter screen plate with the shape matched with that of the whole smoke collecting cavity is arranged at the wind cabinet opening in the smoke collecting cavity. Although the near-suction type range hood can make the noise of the range hood smaller and the oil separation degree bigger on the premise that the air quantity is not influenced, a fan adopts a single air inlet mode, a negative pressure area has the defects of large middle and small two sides of an air inlet, the smoke leakage phenomenon exists at two sides of the air inlet, and the smoke suction effect of the two sides is poor. In addition, if the air inlet of the existing near-suction type range hood is designed to be a wide-width wide-area air inlet, the air inlet speed at two ends of the air inlet is obviously reduced, so that the oil smoke suction effect is greatly reduced. In view of the above, there is a need for further improvement of the existing structure of the near-suction type range hood.
Disclosure of Invention
The utility model aims to solve the technical problems of the prior art, and provides the range hood which can effectively enlarge the area of the negative pressure area of the air inlet and has low noise.
The technical scheme adopted for solving the technical problems is as follows: this range hood, including fan dustcoat and the collection petticoat pipe of locating the fan dustcoat below, fan dustcoat internally mounted has centrifugal fan, its characterized in that: the fan housing and the fume collecting hood are internally provided with a T-shaped inner cavity together, the centrifugal fan is provided with a left air inlet and a right air inlet, the lower part of the fume collecting hood is provided with a wide air inlet, the left end and the right end of the wide air inlet are respectively adjacent to the corresponding side edges of the fume collecting hood, and a first oil filter plate with a shape matched with that of the wide air inlet is arranged.
In order to enable one side with large air inlet quantity to be provided with a large air inlet channel, the centrifugal fan is vertically arranged and is offset left and right in the fan housing, and the impeller central axis of the centrifugal fan is parallel to the front side plate of the fan housing.
Further preferably, the motor of the centrifugal fan is arranged at the left side of the fan, the right air inlet is a main air inlet, the left air inlet is a secondary air inlet, and the distance a between the main air inlet and the right side plate of the outer cover of the fan and the distance b between the secondary air inlet and the left side plate of the outer cover of the fan satisfy the condition that a/b is more than or equal to 2.
In order to increase the flow rate and the air inlet speed at two sides of the wide air inlet, a second oil filter plate is arranged in the middle of the back of the first oil filter plate.
In order to make the flow lifting effect of the two sides of the wide air inlet consistent, the second oil filtering plate is arranged in the middle of the wide air inlet.
In order to more effectively improve the wind speed at the left side and the right side of the wide air inlet, the smoke is not leaked at the two sides of the range hood, and the left-right width of the second oil filtering plate is equal to or smaller than the width of the fan outer cover.
Further preferably, first strip oil filtering holes are formed in the first oil filtering plate, the first strip oil filtering holes are distributed at intervals in the left-right direction, the length direction of the first strip oil filtering holes is consistent with the width direction of the first oil filtering plate, second strip oil filtering holes are formed in the second oil filtering plate, the second strip oil filtering holes are distributed at intervals in the left-right direction, and the length direction of the second strip oil filtering holes is consistent with the length direction of the first strip oil filtering holes.
In order to improve the acceleration effect of wind speed at the left side and the right side, the second strip oil filtering holes are staggered with the first strip oil filtering holes at the corresponding positions in the left-right direction.
In order to further improve the acceleration effect of the wind speed at the left side and the right side, a gap is reserved between the first oil filtering plate and the second oil filtering plate, and the projection of the oil filtering strips between two adjacent second strip oil filtering holes on the first oil filtering plate completely covers the first strip oil filtering holes at the corresponding positions.
As a preferable mode of any one of the above schemes, an air outlet cover communicated with an air outlet of the centrifugal fan is arranged at the top of the fan housing.
Compared with the prior art, the utility model has the advantages that: the fan housing and the fume collecting hood of the range hood are internally provided with the T-shaped inner cavity negative pressure diffusion area which is matched with the centrifugal fan with left and right double air inlets and the wide air inlet on the fume collecting hood, so that the distance between the left and right negative pressure areas can be effectively prolonged to effectively enlarge the area of the negative pressure areas, the area of the negative pressure areas actually used by a user is enough to cover the operation space of the whole kitchen range, the air inlet air speed is uniformly distributed, and further effective noise reduction can be realized.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
FIG. 2 is an exploded view of a first embodiment of the present utility model;
FIG. 3 is a schematic diagram illustrating an internal structure of an embodiment of the present utility model;
FIG. 4 is a schematic structural diagram of a second embodiment of the present utility model;
FIG. 5 is an exploded perspective view (with the front side panel of the fan housing removed) of a second embodiment of the present utility model;
FIG. 6 is a schematic diagram illustrating an internal structure of a second embodiment of the present utility model;
fig. 7 is a schematic view illustrating an internal structure of a second embodiment of the present utility model.
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 3, the range hood in the present embodiment is a near-suction range hood, and includes a fan housing 1, a fume collecting hood 2, a centrifugal fan 3, a first oil filter 4, and other components. Wherein, collection petticoat pipe 2 locates fan dustcoat 1 below, and fan dustcoat 1 and collection petticoat pipe 2 inside form T inner chamber jointly, and collection petticoat pipe 2's lower part is formed with wide air intake 21, and wide air intake 21's both ends are close to collection petticoat pipe 2's corresponding side respectively about the both ends, and wide air intake 21 length reaches about 1 meter. The first oil filter plate 4 is installed at the wide air inlet and is matched with the wide air inlet 21 in shape. In addition, the top of the fan housing 1 of the range hood is provided with an air outlet cover 6 communicated with the air outlet of the centrifugal fan.
The centrifugal fan 3 of the embodiment is vertically installed in the fan housing 1, and the central axis of the impeller 34 of the centrifugal fan 3 is parallel to the front side plate 11 of the fan housing. The centrifugal fan 3 adopts a double air inlet structure, namely, a left air inlet 31 and a right air inlet 32. Because the motor (not shown) of the centrifugal fan is arranged at the left side of the fan, the air intake of the right side of the fan is larger, therefore, the centrifugal fan 3 is offset left and right in the fan housing 1, the right air inlet 32 forms a main air inlet, the left air inlet 31 forms a secondary air inlet, the distance between the main air inlet and the right side plate 12 of the fan housing is set as a, the distance between the secondary air inlet and the left side plate 13 of the fan housing is set as b, and a/b is more than or equal to 2 between a and b.
The range hood can effectively enlarge the area of the negative pressure area of the air inlet and reduce noise, and the principle is as follows: the negative pressure diffusion area of the T-shaped inner cavity inside the fan housing 1 and the fume collecting hood 2 is matched with the wide air inlet 21, so that the inner cavity of the range hood has a sufficiently large negative pressure space, and the left-right negative pressure area distance can be effectively prolonged to effectively enlarge the area of the negative pressure area after being matched with the centrifugal fan 3 with left-right double air inlet, so that the area of the negative pressure area actually used by a user is enough to cover the whole kitchen range operation space, the air inlet wind speed is uniformly distributed, and noise can be effectively reduced.
The range hood of the embodiment adopts the left-right offset double-air inlet centrifugal fan 3 to match with the diffusion area of the T-shaped inner cavity, so that the flow of the whole wide air inlet 21 can be increased, the flow of the whole wide air inlet 21 is increased, and the air inlet speed of the left end and the right end of the wide air inlet 21 is improved. Through experiments, the air inlet speed at the farthest positions at the two ends of the wide air inlet 21 with the length of 1 meter can be increased to 2.6m 3 And/s and above, the air inlet speed of the central large area is 2.8m 3 And/s, the air inlet speed is extremely uniform. For the existing range hood adopting a single air inlet centrifugal fan, if an air inlet with the width of 1 meter is adopted, the maximum air inlet speed at the left end and the right end is reduced to 0.5m 3 The air inlet speed of the central minimum area is 3m 3 The velocity profile is highly uneven.
Embodiment two:
as shown in fig. 4 to 7, the range hood of the present embodiment is a near-suction range hood, the centrifugal fan 3 is offset left and right, the motor 33 of the centrifugal fan 3 is installed on the left side of the fan, the left air inlet 31 of the fan is a secondary air inlet, the right air inlet 32 is a primary air inlet, and the fume collecting hood 2 also adopts a wide air inlet 21. Compared with the first embodiment, the second oil filter plate 5 is added, the second oil filter plate 5 is installed in the middle of the back of the first oil filter plate 4, the second oil filter plate 5 is located in the middle of the wide air inlet 21, and the left-right width of the second oil filter plate 5 is equal to or smaller than the width of the fan housing 1.
In this embodiment, the first oil filter plates 4 are formed with first strip oil filter holes 41 distributed in left and right directions in sequence, the length direction of each first strip oil filter hole 41 is consistent with the width direction of the first oil filter plate 4, and the second oil filter plates 5 are formed with second strip oil filter holes 51 distributed in left and right directions in sequence, and the length direction of each second strip oil filter hole 51 is consistent with the length direction of the first strip oil filter hole 41.
In addition, the second strip oil filter holes 51 are offset from the first strip oil filter holes 41 at the corresponding positions in the left-right direction. A gap is left between the first oil filtering plate 4 and the second oil filtering plate 5, and the projection of the oil filtering strips 52 between two adjacent second strip oil filtering holes 51 on the first oil filtering plate 4 completely covers the first strip oil filtering holes 41 at corresponding positions.
The partial superposition of the second oil filter plate 5 at the rear of the wide air inlet 21 in this embodiment results in a reduction in the air inlet area in the middle region of the wide air inlet 21. Because the whole machine adopts the wide air inlet 21, the air quantity of the whole machine can be kept unchanged, after the air inlet area in the middle is reduced, under the condition that the flow rate Q is unchanged according to the flow equation Q= SxV, the air speed V at the left and right sides of the wide air inlet is increased by reducing Sx, the air speeds at the left and right sides are uniform, and the air inlet speed at the farthest positions at the two ends of the wide air inlet with the length of 1 meter can be increased to 3.5m 3 And/s and above, and the air inlet speed is uniformly distributed, so that the left side and the right side of a user do not run smoke when in actual use. In addition, as described in the first embodiment, if the wide air inlet 21 with a length of 1 meter is used without adding the second oil filter plate 5, the air inlet speed at the farthest position at the left and right ends is 2.6m 3 /s。
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 (6)
1. The utility model provides a range hood, includes fan dustcoat (1) and locates collection petticoat pipe (2) of fan dustcoat below, fan dustcoat (1) internally mounted has centrifugal fan (3), its characterized in that: the novel oil filter is characterized in that a T-shaped inner cavity is formed in the fan housing (1) and the fume collecting hood (2), the centrifugal fan (3) is provided with a left air inlet (31) and a right air inlet (32), a wide air inlet (21) is formed in the lower portion of the fume collecting hood (2), the left end and the right end of the wide air inlet (21) are respectively adjacent to the corresponding side edges of the fume collecting hood (2), a first oil filtering plate (4) with a shape matched with that of the wide air inlet (21) is installed, the centrifugal fan (3) is vertically arranged and is biased left and right in the fan housing (1), the impeller central axis of the centrifugal fan (3) is parallel to the front side plate (11) of the fan housing, a motor (33) of the centrifugal fan (3) is installed on the left side of the fan, the right air inlet (32) is a main air inlet, the left air inlet (31) is a secondary air inlet, the distance a between the right side plate (12) of the main air inlet and the left side plate (13) of the secondary air inlet is more than or equal to 2, the distance b between the left side plate (13) of the fan housing of the secondary air inlet is equal to or equal to 2, the first oil filtering plate (4) is installed on the back of the second oil filtering plate (5).
2. The range hood of claim 1, wherein: the left-right width of the second oil filtering plate (5) is equal to or smaller than the width of the fan housing (1).
3. The range hood of claim 1, wherein: the first oil filtering plate (4) is provided with first strip oil filtering holes (41) which are distributed at intervals in the left-right direction, the length direction of the first strip oil filtering holes (41) is consistent with the width direction of the first oil filtering plate (4), the second oil filtering plate (5) is provided with second strip oil filtering holes (51) which are distributed at intervals in the left-right direction, and the length direction of the second strip oil filtering holes (51) is consistent with the length direction of the first strip oil filtering holes (41).
4. A range hood according to claim 3, wherein: the second strip oil filtering holes (51) are staggered with the first strip oil filtering holes (41) at corresponding positions in the left-right direction.
5. The range hood of claim 4, wherein: a gap is reserved between the first oil filtering plate (4) and the second oil filtering plate (5), and projections of the oil filtering strips (52) between two adjacent second strip oil filtering holes (51) on the first oil filtering plate (4) completely cover the first strip oil filtering holes (41) at corresponding positions.
6. The range hood according to any one of claims 1 to 5, wherein: an air outlet cover (6) communicated with the air outlet of the centrifugal fan (3) is arranged at the top of the fan housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711084983.1A CN108240653B (en) | 2017-11-07 | 2017-11-07 | Fume exhauster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711084983.1A CN108240653B (en) | 2017-11-07 | 2017-11-07 | Fume exhauster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108240653A CN108240653A (en) | 2018-07-03 |
| CN108240653B true CN108240653B (en) | 2024-01-16 |
Family
ID=62700427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711084983.1A Active CN108240653B (en) | 2017-11-07 | 2017-11-07 | Fume exhauster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240653B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925812A (en) * | 2019-04-16 | 2019-06-25 | 马鞍山蓝信环保科技有限公司 | A kind of oil smoke processing environmental protection equipment |
| CN110486764A (en) * | 2019-08-12 | 2019-11-22 | 宁波方太厨具有限公司 | A kind of range hood |
| CN110486763A (en) * | 2019-08-12 | 2019-11-22 | 宁波方太厨具有限公司 | A kind of range hood |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232351A (en) * | 2006-02-03 | 2007-09-13 | Matsushita Electric Ind Co Ltd | Range hood |
| CN200961898Y (en) * | 2006-11-01 | 2007-10-17 | 周建达 | Wall hanging type back-ventilating oil smoke ventilator |
| CN204806497U (en) * | 2015-07-02 | 2015-11-25 | 朱五清 | Lampblack absorber oil strain board |
| CN205402862U (en) * | 2016-03-23 | 2016-07-27 | 浙江正德和食品有限公司 | A collection petticoat pipe for food processing |
| CN106524268A (en) * | 2016-12-30 | 2017-03-22 | 宁波方太厨具有限公司 | Range hood with double series fans |
| CN106642256A (en) * | 2016-12-16 | 2017-05-10 | 宁波方太厨具有限公司 | Filtering device for range hood |
| CN206291274U (en) * | 2016-12-22 | 2017-06-30 | 中山市冠亮电器实业有限公司 | A kind of smoke exhaust ventilator with air port oil drip-preventing device |
| CN207378918U (en) * | 2017-11-07 | 2018-05-18 | 宁波方太厨具有限公司 | A kind of range hood |
| CN207378915U (en) * | 2017-11-07 | 2018-05-18 | 宁波方太厨具有限公司 | A kind of range hood |
-
2017
- 2017-11-07 CN CN201711084983.1A patent/CN108240653B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232351A (en) * | 2006-02-03 | 2007-09-13 | Matsushita Electric Ind Co Ltd | Range hood |
| CN200961898Y (en) * | 2006-11-01 | 2007-10-17 | 周建达 | Wall hanging type back-ventilating oil smoke ventilator |
| CN204806497U (en) * | 2015-07-02 | 2015-11-25 | 朱五清 | Lampblack absorber oil strain board |
| CN205402862U (en) * | 2016-03-23 | 2016-07-27 | 浙江正德和食品有限公司 | A collection petticoat pipe for food processing |
| CN106642256A (en) * | 2016-12-16 | 2017-05-10 | 宁波方太厨具有限公司 | Filtering device for range hood |
| CN206291274U (en) * | 2016-12-22 | 2017-06-30 | 中山市冠亮电器实业有限公司 | A kind of smoke exhaust ventilator with air port oil drip-preventing device |
| CN106524268A (en) * | 2016-12-30 | 2017-03-22 | 宁波方太厨具有限公司 | Range hood with double series fans |
| CN207378918U (en) * | 2017-11-07 | 2018-05-18 | 宁波方太厨具有限公司 | A kind of range hood |
| CN207378915U (en) * | 2017-11-07 | 2018-05-18 | 宁波方太厨具有限公司 | A kind of range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108240653A (en) | 2018-07-03 |
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