CN109424999B - Fume exhaust fan - Google Patents
Fume exhaust fan Download PDFInfo
- Publication number
- CN109424999B CN109424999B CN201710721729.1A CN201710721729A CN109424999B CN 109424999 B CN109424999 B CN 109424999B CN 201710721729 A CN201710721729 A CN 201710721729A CN 109424999 B CN109424999 B CN 109424999B
- Authority
- CN
- China
- Prior art keywords
- smoke
- fume
- suction
- guide 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.)
- Active
Links
- 239000003517 fume Substances 0.000 title claims abstract description 49
- 239000000779 smoke Substances 0.000 claims abstract description 91
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 4
- 210000003141 lower extremity Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 16
- 238000010411 cooking Methods 0.000 description 5
- 239000006233 lamp black Substances 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002195 synergetic effect 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
- F24C15/2071—Removing cooking fumes mounting of cooking hood
Abstract
The invention relates to a range hood, which comprises a case (1) with a centrifugal fan (4) arranged therein and a fume collecting hood (2) connected below the case (1), wherein a fume collecting cavity is formed between the case (1) and the fume collecting hood (2), and the fume collecting cavity is communicated with a suction inlet of the centrifugal fan in the case (1); the fume collecting hood (2) comprises a left side plate (21) and a right side plate (21), and an obliquely arranged oil guide plate (24) connected between the left side plate and the right side plate (21); the method is characterized in that: the middle part of the oil guide plate (24) is provided with an oil smoke suction inlet (22) near the lower edge of the oil guide plate (24), and the oil smoke suction inlet (22) is communicated with the smoke collecting cavity through the inner cavity of the smoke collecting cover (2). The invention can effectively avoid smoke leakage, has good suction and discharge effects on big smoke and small smoke, and has good external airflow interference resistance.
Description
Technical Field
The invention relates to the field of range hoods, in particular to a range hood with good suction effect.
Background
CN201610905111.6 discloses a range hood, comprising a case and a fume collecting hood connected below the case, wherein a centrifugal fan is arranged in the case, and an air inlet communicated with the inner cavity of the case is arranged on the fume collecting hood; the centrifugal fan is characterized by being a double-suction centrifugal fan; the smoke collecting cover comprises a first cavity and a second cavity which are mutually independent, the air inlet is communicated with the first cavity, and the first cavity is communicated with the front air inlet of the centrifugal fan; the second cavity extends downwards and is provided with an inclined plane which inclines forwards from bottom to top, a left axial flow fan and a right axial flow fan are arranged on the inclined plane at intervals, a partition plate is arranged in the second cavity to divide the second cavity into a left channel corresponding to the left axial flow fan and a right channel corresponding to the right axial flow fan, and the left channel and the second air flow channel are both communicated with a rear air inlet of the centrifugal fan. And be equipped with temperature-detecting device, judge whether there is cooking utensils work in left and right sides, when one side work, open the axial fan that sets up on the range hood of corresponding position, improve this side flow, and then improve the oil smoke effect. This application can effectively utilize lampblack absorber flow at cooking utensils unilateral during operation, improves the oil absorption effect, and the less external air current disturbance leads to run the cigarette problem, but when an axial fan during operation, another one also can rotate along with the air current, and then occupies a part of lampblack absorber flow, has reduced the due effect in single side.
Disclosure of Invention
The invention aims to solve the technical problem of providing a range hood with good suction effect, which can effectively avoid smoke leakage.
The technical scheme adopted for solving the technical problems is as follows: the range hood comprises a case in which a centrifugal fan is arranged and a fume collecting hood connected below the case, wherein a fume collecting cavity is formed between the case and the fume collecting hood, and the fume collecting cavity is communicated with a suction inlet of the centrifugal fan in the case; the fume collecting hood comprises a left side plate and a right side plate and an obliquely arranged oil guide plate connected between the left side plate and the right side plate;
the method is characterized in that:
the middle part of the oil guide plate is provided with an oil smoke suction inlet close to the lower edge of the oil guide plate, and the oil smoke suction inlet is communicated with the smoke collecting cavity through the inner cavity of the smoke collecting cover.
As an improvement, the centrifugal fan can be provided with a first suction inlet arranged in front and a second suction inlet arranged behind;
a partition plate is connected between the upper end edge of the oil guide plate and the volute of the centrifugal fan, penetrates through the smoke collecting cavity to divide the smoke collecting cavity into a front smoke collecting cavity and a rear smoke collecting cavity, and separates a first suction inlet from a second suction inlet of the centrifugal fan;
the front smoke collecting cavity is communicated with the first suction inlet of the centrifugal fan, and the rear smoke collecting cavity is communicated with the inner cavity of the smoke collecting cover and the second suction inlet. The structure can further avoid the mutual interference of the lampblack entering the two suction inlets, and can obtain better suction and exhaust effects.
The ratio of the suction quantity Q1 passing through the front smoke collecting cavity to the suction quantity Q2 passing through the rear smoke collecting cavity is 1-3:1.
Preferably, the vertical distance between the oil smoke suction inlet and the smoke collecting cavity is more than or equal to 300mm. The smoke collecting cavity is arranged at a position 300mm above the smoke suction inlet at the lower part, is far away from the cooker, and can absorb the smoke with high rising speed better. The two air inlets are matched with each other, and the smoke leakage can be effectively avoided due to the synergistic effect, and the external disturbance resistance is good.
The front end edges of the left side plate and the right side plate are protruded outwards from the oil guide plate by 30-100 mm; the convex parts of the left side plate and the right side plate and the surface of the oil guide plate form a smoke collecting groove to form a smoke collecting area, so that a better suction and discharge effect is obtained. If the protruding distance is too deep, the lampblack can be scattered; if the convex is too shallow, the oil smoke can collide with the oil guide plate and rebound outwards under the action of the oil guide plate; the suction and discharge effect is affected.
Further, the fume suction inlet may be perpendicular to the inlet face of the fume collecting cavity. The structure makes two oil smoke inlets mutually matched and mutually complemented, so that most oil smoke is quickly sucked away through the smoke collecting cavity, and a small part of oil smoke enters the oil smoke suction inlet, thereby effectively avoiding the phenomenon of smoke leakage and shielding the interference of external air flow.
Preferably, the ratio of the length to the width of the oil smoke suction inlet is 8-15:1. The structure can ensure the suction speed, suck the oil smoke at a higher flow speed, and ensure the suction area so as to ensure the suction and discharge effect.
Preferably, the length of the fume suction inlet can be 400-600 mm. The scheme can simultaneously consider the oil fume suction of the cooking ranges at the left side and the right side.
More preferably, the width of the smoke collecting cavity can be 30-80 mm; the flow velocity of the oil smoke can be guaranteed by the scheme, and the suction and discharge effect is improved.
Compared with the prior art, the range hood provided by the invention has the advantages that the oil smoke suction inlet is formed on the oil guide plate, the upper air inlet and the lower air inlet are formed, wherein the lower air inlet is closer to the cooker, has larger attraction to oil smoke, can well suck and control the oil smoke into the smoke collecting cavity of the range hood, reduces the diffusion of the oil smoke in the rising process, mainly aims at smaller oil smoke, and can easily suck the oil smoke due to the low oil smoke speed and small upward impact force of the oil smoke due to the close air inlet distance; the oil smoke suction inlet is arranged at the middle position of the oil guide plate, so that the oil smoke generated by cooking can be sucked inwards, the oil smoke is prevented from diffusing and escaping to the periphery, and the suction effect is better.
Drawings
FIG. 1 is a schematic perspective view of an assembled structure according to an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of an assembled structure according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an embodiment of the present invention with the left side panel of the hood removed;
fig. 4 is a diagram of the relationship between the front and rear smoke collecting cavities and the oil smoke channel formed between the centrifugal fans in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 4, the range hood includes:
a case 1 in which a centrifugal fan 4 is installed; the centrifugal fan in this embodiment is a double suction type centrifugal fan having a front first suction port 41 and a rear second suction port 42.
The fume collecting hood 2 is connected below the case 1, and a fume collecting cavity is formed between the case 1 and the fume collecting hood 2; the fume collecting hood 2 comprises a left side plate 21, a right side plate 21, an obliquely arranged oil guide plate 24 connected between the left side plate 21 and the right side plate 21 and a vertically arranged back plate 27, wherein the lower end edge of the oil guide plate 24 is connected with the lower end edge of the back plate 27.
The front edges of the left side plate 21 and the right side plate 21 are protruded forward and outwards by 50mm from the oil guide plate; the convex parts of the left side plate 21 and the right side plate 21 and the surface of the oil guide plate 24 form a smoke collecting groove 23 so as to facilitate smoke collection and avoid the rebound escape of the oil smoke after the oil smoke collides with the oil guide plate.
The upper end edge of the oil guide plate 24 is positioned in the middle of the smoke collecting cavity to divide the smoke collecting cavity into a front smoke collecting cavity 25 and a rear smoke collecting cavity 26. The upper end edge of the oil guide plate 24 is connected with a baffle plate 3, and the baffle plate 3 extends into a volute 43 connected with the centrifugal fan 4 in the chassis 1, so that a first suction inlet 41 and a second suction inlet 42 of the centrifugal fan are isolated; the front smoke collecting cavity 25 is communicated with the first suction inlet 41 of the centrifugal fan only, and the rear smoke collecting cavity 26 is communicated with the second suction inlet 42 of the centrifugal fan 4 only.
The cavity 28 of the fume collecting hood 2 is communicated with the rear fume collecting cavity 26.
The oil guide plate 24 is provided with an oil smoke suction port 22 communicating with the cavity 28. The oil smoke suction inlet 22 in the embodiment is positioned at the middle part of the oil guide plate and is close to the lower edge of the oil guide plate, and the oil smoke suction inlet 22 is communicated with the cavity 28 of the fume collecting hood.
The inlet end face of the oil smoke suction inlet is vertically arranged, the inlet end face of the smoke collecting cavity is transversely arranged, and the inlet end face are mutually perpendicular; the vertical distance between the fume suction port 22 and the fume collecting cavity 21 is 350mm.
The length of the fume suction inlet 22 in this embodiment is 500mm and the width is 50mm; the width of the fume collecting chamber 21 is 50mm so that the ratio of the amount of suction Q1 through the fume collecting chamber 21 to the amount of suction Q2 through the fume suction port 22 is 2:1.
When the range hood works, about one third of the oil smoke generated by cooking enters a cavity of the fume collecting hood through the oil smoke suction inlet 22 under the action of the centrifugal fan, and then enters a second suction inlet of the centrifugal fan through the rear fume collecting cavity to be discharged; about two thirds of the oil smoke enters the second suction inlet of the centrifugal fan through the front smoke collecting cavity and is discharged.
The range hood in the embodiment is compared with the conventional range hood in terms of the suction and exhaust effects.
The conventional range hood is provided with only a smoke collecting cavity, the oil guide plate is in a flat plate shape, and a lampblack suction inlet is not arranged; and after the range hood is started, the flow and pressure detection system shows that the parameters of the embodiment are consistent with those of the conventional range hood.
Under the same working condition and external condition, the same distance is arranged on the same side of the two range hoods, the same batch of small interference fans are arranged at the same position, the oil fume suction environment is interfered, and the size of the interference air flow is controlled by adjusting the power supply voltage of the small fans.
Under the condition of no interference, the two range hoods have better oil smoke suction effect, and when the interference degree is gradually increased, the conventional range hoods have the oil smoke escape phenomenon under the voltage of the small interference fan 3 v; the range hood in the embodiment starts to run under 4.5v interference voltage.
This shows that the range hood provided by the invention has more excellent fume suction effect under the condition of the same fan system performance, and the reasonable air inlet proportion and the distance between the upper air inlet and the lower air inlet enable the range hood to realize the double-excellent fume suction effect of big fume and small fume.
Claims (9)
1. A range hood comprises a case (1) with a centrifugal fan (4) arranged therein and a fume collecting hood (2) connected below the case (1), wherein a fume collecting cavity is formed between the case (1) and the fume collecting hood (2), and the fume collecting cavity is communicated with a suction inlet of the centrifugal fan in the case (1); the fume collecting hood (2) comprises a left side plate (21) and a right side plate (21), and an obliquely arranged oil guide plate (24) connected between the left side plate and the right side plate (21);
the method is characterized in that:
the middle part of oil guide plate (24) is close to the lower limb position of oil guide plate (24) and is equipped with oil smoke sunction inlet (22), oil smoke sunction inlet (22) are through the inner chamber intercommunication of collection petticoat pipe (2) collection smoke chamber, the upper end edge of oil guide plate (24) is located the middle part of collection smoke chamber.
2. A range hood according to claim 1, characterized in that the centrifugal fan (4) has a first suction inlet (41) in front and a second suction inlet (42) in rear;
a partition plate (3) is connected between the upper end edge of the oil guide plate (24) and a volute (43) of the centrifugal fan (4), and the partition plate (3) penetrates through the smoke collecting cavity to divide the smoke collecting cavity into a front smoke collecting cavity (25) and a rear smoke collecting cavity (26) and isolate a first suction inlet (41) and a second suction inlet (42) of the centrifugal fan;
the front smoke collecting cavity (25) is communicated with a first suction inlet (41) of the centrifugal fan, and the rear smoke collecting cavity (26) is communicated with an inner cavity of the smoke collecting cover and a second suction inlet (42).
3. A range hood according to claim 2, characterized in that the ratio of the suction Q1 through the front collection chamber (25) to the suction Q2 through the rear collection chamber (26) is 1-3:1.
4. A range hood according to any one of claims 1 to 3, characterized in that the vertical distance between the fume intake (22) and the fume collection cavity is not less than 300mm.
5. The range hood according to claim 4, wherein the front edges of the left and right side plates (21) protrude outward from the oil guide plate (24) by 30-100 mm; the convex parts of the left side plate (21) and the right side plate (24) and the surface of the oil guide plate form a smoke collecting groove (23).
6. The range hood of claim 5, wherein the inlet face of the fume intake (22) is perpendicular to the inlet face of the fume collection chamber.
7. The range hood according to claim 6, characterized in that the ratio of length to width of the fume intake (22) is 8-15:1.
8. The range hood according to claim 7, characterized in that the length of the oil fume suction port (22) is 400-600 mm.
9. The range hood of claim 8, wherein the smoke collection chamber has a width of 30-80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721729.1A CN109424999B (en) | 2017-08-22 | 2017-08-22 | Fume exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721729.1A CN109424999B (en) | 2017-08-22 | 2017-08-22 | Fume exhaust fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109424999A CN109424999A (en) | 2019-03-05 |
| CN109424999B true CN109424999B (en) | 2024-01-16 |
Family
ID=65498012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721729.1A Active CN109424999B (en) | 2017-08-22 | 2017-08-22 | Fume exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109424999B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154490B (en) * | 2021-03-29 | 2023-03-24 | 宁波方太厨具有限公司 | Fume exhaust fan |
| CN113154491B (en) * | 2021-03-29 | 2022-10-21 | 宁波方太厨具有限公司 | Fume exhaust fan |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2658619Y (en) * | 2003-10-15 | 2004-11-24 | 中山华帝燃具股份有限公司 | Oil filter for filtering type enviornmental protection kitchen ventilator |
| CN104141975A (en) * | 2013-05-09 | 2014-11-12 | 博西华电器（江苏）有限公司 | Side draft smoke ventilator shell and side draft smoke ventilator |
| CN204115037U (en) * | 2014-09-01 | 2015-01-21 | 蔡爱文 | Range hood with improved oil fume suction mode |
| CN204285557U (en) * | 2014-11-04 | 2015-04-22 | 杭州老板电器股份有限公司 | A kind of side-sucking oil smoke sucking machine trapezoidal hold together smoke chamber structure |
| CN106152219A (en) * | 2016-08-19 | 2016-11-23 | 宁波方太厨具有限公司 | A kind of oil smoke leading type range hood |
| CN206361764U (en) * | 2016-12-09 | 2017-07-28 | 成都前锋电子有限责任公司 | A kind of integrally formed L-type range hood of internal oil guide plate |
| CN207050052U (en) * | 2017-08-22 | 2018-02-27 | 宁波方太厨具有限公司 | Range hood |
-
2017
- 2017-08-22 CN CN201710721729.1A patent/CN109424999B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2658619Y (en) * | 2003-10-15 | 2004-11-24 | 中山华帝燃具股份有限公司 | Oil filter for filtering type enviornmental protection kitchen ventilator |
| CN104141975A (en) * | 2013-05-09 | 2014-11-12 | 博西华电器（江苏）有限公司 | Side draft smoke ventilator shell and side draft smoke ventilator |
| CN204115037U (en) * | 2014-09-01 | 2015-01-21 | 蔡爱文 | Range hood with improved oil fume suction mode |
| CN204285557U (en) * | 2014-11-04 | 2015-04-22 | 杭州老板电器股份有限公司 | A kind of side-sucking oil smoke sucking machine trapezoidal hold together smoke chamber structure |
| CN106152219A (en) * | 2016-08-19 | 2016-11-23 | 宁波方太厨具有限公司 | A kind of oil smoke leading type range hood |
| CN206361764U (en) * | 2016-12-09 | 2017-07-28 | 成都前锋电子有限责任公司 | A kind of integrally formed L-type range hood of internal oil guide plate |
| CN207050052U (en) * | 2017-08-22 | 2018-02-27 | 宁波方太厨具有限公司 | Range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109424999A (en) | 2019-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210662985U9 (en) | Fume exhauster | |
| CN203704094U (en) | Roof-suction rotary type exhaust fume collecting hood | |
| CN212618543U (en) | Fume exhaust fan | |
| CN109424999B (en) | Fume exhaust fan | |
| US20040231657A1 (en) | Kitchen ventilation hood | |
| CN207230691U (en) | Range hood | |
| CN106352383A (en) | Range hood | |
| CN107191983B (en) | Fume exhaust fan | |
| CN105485747A (en) | Convection type rectifying edge air suction lampblack removal mode | |
| CN108240653B (en) | Fume exhauster | |
| CN103104527A (en) | Double volute wind wheel fan | |
| CN203036722U (en) | Three-dimensional-air-incoming range hood | |
| CN103574721A (en) | Energy-saving environment-friendly side-draft type range hood | |
| CN109595644B (en) | Fume exhauster | |
| CN112648664B (en) | Fume exhaust fan | |
| CN203478381U (en) | Side suction type range hood | |
| CN109268894B (en) | Combined system of smoke kitchen range | |
| CN208579364U (en) | A kind of new mobile type rectification plate of range hood suitable for dual-range-head | |
| CN215863647U (en) | Double air curtain fume exhaust fan | |
| CN202328450U (en) | Spiral case with flow stabilization and denoising functions | |
| CN219083201U (en) | Fume exhauster | |
| CN105276647A (en) | Integrated kitchen with flow guide function | |
| CN219414917U (en) | Fume exhauster | |
| CN107300199B (en) | Three-dimensional air inlet range hood | |
| CN205717408U (en) | There is the lampblack absorber on lower guide cigarette inclined-plane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |