CN106524267A - Top suction type extractor hood - Google Patents
Top suction type extractor hood Download PDFInfo
- Publication number
- CN106524267A CN106524267A CN201611252124.4A CN201611252124A CN106524267A CN 106524267 A CN106524267 A CN 106524267A CN 201611252124 A CN201611252124 A CN 201611252124A CN 106524267 A CN106524267 A CN 106524267A
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- CN
- China
- Prior art keywords
- exhaust fume
- fume collecting
- air inlet
- collecting hood
- lower cover
- 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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Classifications
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- 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
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- 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 a top suction type extractor hood which comprises an exhaust fume collecting hood and an auxiliary fan for injection. The exhaust fume collecting hood is concaved upwards to form an exhaust fume collecting cavity. The exhaust fume collecting hood is provided with an air inlet. A cavity is formed around the air inlet in the exhaust fume collecting hood. An air outlet of the auxiliary fan faces towards the interior of the cavity. The bottom of the outer side of the cavity is provided with an injection air outlet which faces towards the air inlet in an upward inclined mode. The top suction type extractor hood is characterized in that the lowest point of the air inlet of the auxiliary fan is not lower than the air inlet of the exhaust fume collecting hood, and sucks gas entering the air inlet of the exhaust fume collecting hood, and the cavity, the injection air outlet, the exhaust fume collecting cavity, the air inlet of the exhaust fume collecting hood and the auxiliary fan form a circulation flow path for gas circulation flow. Gas circularly flows in the circulation flow path, negative pressure is produced, rising exhaust fume is guided to flow and be gathered towards the air inlet of the extractor hood, the exhaust fume collecting effect is greatly improved, and exhaust fume is prevented from being escaping.
Description
Technical field
The present invention relates to a kind of range hood, especially a kind of top-sucking kitchen ventilator.
Background technology
At present existing top-sucking kitchen ventilator (be arranged on directly over kitchen range, thin type, deep type or tower range hood,
Do not include that side is inhaled and lower-discharging type) mostly version be：Top arranges exhaust fume collecting hood and forms concave cavity (smoke collecting chamber), on exhaust fume collecting hood
It is provided with air inlet and drainage screen.The oil smoke produced in cooking process is collected in smoke collecting chamber, and by connecting with smoke collecting chamber
Discharge outdoor in logical air channel.
A kind of top-sucking kitchen ventilator as disclosed in the Chinese patent application of Application No. 201410315985.7, including collection
Petticoat pipe and the air inlet of exhaust fume collecting hood bottom surface is arranged on, oil collection plate is fixed on the underface of air inlet, constitutes with air inlet bottom surface
The passage of four side air intakes, kuppe are located at the lower surface of oil collection plate, and due to being four side air intakes, smoking efficiency is higher, and water conservancy diversion
Cover can carry out the water conservancy diversion of four direction to oil smoke, at utmost strengthen the fume-exhausting ability of lampblack absorber.
Above-mentioned this range hood, the oil smoke produced by cooking stove below, will by kuppe during ascension
Oil smoke is imported in air inlet, although this range hood can pass through the setting of oil collection plate and kuppe so as to by oil smoke as far as possible
Suction, but if the oil smoke amount for producing is larger or when having external air flow to disturb, oil smoke is easy to from exhaust fume collecting hood both sides
Position is escaped, and thus can not only reduce the smoking efficiency of range hood, and if producing the phenomenon of fumes escaping, easily to kitchen
The environment in room is impacted, and can also affect the health of user.
At present the conventional mode for constituting air curtain is preventing fumes escaping, the such as China of Application No. 200510106682.5 specially
Sharp disclosed one kind is by smoke discharging pipe, filter screen and adsorbing material, relief valve, parabolic type outer tube, hyperbolic-type horn mouth, blower fan
Exhaust duct, centrifugal fan, circulating tanks, oil smoke entrance, section oil groove, air curtain ajutage, air inlet, backflow sleeve pipe, row
Smoke pipeline outlet, base plate composition.
This traditional range hood air curtain technology, is isolated with oil smoke using the blower fan of Whirl entraining soot device, one
Aspect air-supply forms air curtain trapping, heat-insulated, circulating tanks of on the other hand blowing, and rotation forms low pressure core volume suction at a high speed to make air-flow
Oil smoke.The shortcoming of the technology is air curtain while oil smoke is isolated, and hinders gas to range hood internal flow so that escaped
Oil smoke to periphery is difficult to catch, so as to escape；Additionally, the circulating path of the air curtain includes：1st, centrifugal blower --- V-shaped groove ---
Smokejack outlet-indoor --- centrifugal blower；2nd, centrifugal blower --- air curtain outlet --- oil smoke entrance --- outlet of-smokejack ---
It is indoor --- centrifugal blower；3rd, oil smoke entrance --- outlet of-smokejack ----indoor ----oil smoke entrance, this endless form can be made
Into the pollution of indoor environment.
Also there is a kind of range hood with induction apparatus as shown in Figure 6, the blower fan 1 ' of induction apparatus is from range hood
Outside air intake, certain negative pressure-pumping effect is produced to outside oil smoke so that the oil smoke in critical state is due to blower fan
Effect, escapes into outside range hood action space, with human contact, so as to be absorbed by the body, produces air pollution, affects body
Health；Additionally, from range hood external suction air, easily causing the disturbance of extraneous air, fumes escaping is easily caused on the contrary.
The content of the invention
The technical problem to be solved is the problem existed for above-mentioned prior art, there is provided a kind of to prevent oil smoke
Escape, the top-sucking kitchen ventilator for lifting smoke absorption effect.
The present invention solve the technical scheme that adopted of above-mentioned technical problem for：A kind of top-sucking kitchen ventilator, including collection cigarette
Cover and for the accessory fan of injection, the exhaust fume collecting hood is recessed upwards and forms smoke collecting chamber, offers air intake on the exhaust fume collecting hood
Mouthful, the exhaust fume collecting hood forms cavity in the part around air inlet, and the air outlet of the accessory fan is towards in cavity, described
The exterior bottom of cavity be provided be inclined upwardly towards air inlet injection air outlet, it is characterised in that：The accessory fan
The minimum point of air inlet be not less than the air inlet of exhaust fume collecting hood and aspirate from the air inlet of exhaust fume collecting hood the gas for entering, the sky
Chamber, injection air outlet, smoke collecting chamber, the air inlet of exhaust fume collecting hood and accessory fan constitute the circulatory flow of gas circulating flow.
Preferably, the angle of inclination of the injection air outlet and horizontal direction is α, 15 °～45 ° of the span of α, angle
The too small effect that cannot realize injection, the excessive then windage of angle are larger.
Injection is realized for maximum magnitude, it is to avoid fumes escaping, the injection air outlet be bar draught, the injection air-out
The lower side edge of mouth is level.
To ensure certain injection air-flow wind speed, while reducing windage, injection air outlet length in the horizontal direction
Spend for a, the height of in the vertical direction is that b, a and b meet：10 ＜ a/b ＜ 50.
According to currently preferred, the structure of exhaust fume collecting hood is that fan shroud, the exhaust fume collecting hood are provided with above the exhaust fume collecting hood
Including the base plate of lower cover, vertical side plate, upper cover plate and level, the air inlet is opened in the middle of lower cover, the lower cover
Plate is in be inclined upwardly from outer ledge to centre, thus the lower cover smoke collecting chamber formed below, the outer side edges of the lower cover
Edge is connected to the inside edge of base plate, and the outer ledge of the base plate is connected to the bottom of side plate, the top connection of the side plate
Inside edge to the outer ledge of upper cover plate, the lower cover and upper cover plate is all connected on the corresponding side wall of fan shroud, institute
State.
For ease of the fixation of accessory fan, the accessory fan is arranged on the side wall of the left and right of the fan shroud, front side
On, and be located between upper cover plate and lower cover.
According to currently preferred, the set-up mode of injection air outlet is that the lower cover is near the position of outer ledge
Bending downwards extends and forms outlet section, and the bottom of the outlet section is connected with base plate, and the injection air outlet is opened in described
On outlet section.
Preferably, for ease of manufacture, the lower cover, side plate, upper cover plate and base plate are integrally formed.
Preferably, the accessory fan is axial flow blower or centrifugal blower.
Compared with prior art, it is an advantage of the current invention that：By the circulatory flow for forming interior circulation, gas is in recycle stream
Road internal circulation flow, produces negative pressure, guides the oil smoke of ascension to air inlet of kitchen ventilator flowing, aggregation, so as to solve tradition
Air curtain hinders air to the problem of range hood inlet flow, greatly promotes smoke absorption effect, prevents fumes escaping；Additionally, by
In the gas that ejection gas are the entrainment oil smoke for circulating, and net air need not be blotted from foreign volume, it is constant in air output
In the case of, the efficiency of fume-exhausting can be more improved compared to cleaned air water conservancy diversion；Simultaneously because the gas inside suction range hood
To carry out injection, therefore, the disturbance of outer gas stream is not result in, and avoids causing the escape of oil smoke because of the disturbance of outer gas stream.
Description of the drawings
Fig. 1 is the structural representation of top-sucking kitchen ventilator one embodiment of the present invention；
Decomposition texture schematic diagrams of the Fig. 2 for the range hood of Fig. 1；
Sectional views of the Fig. 3 for the range hood of Fig. 1；
Fig. 4 is inverted schematic diagram for the range hood of Fig. 1；
Fig. 5 is the sectional view of second embodiment of top-sucking kitchen ventilator of the present invention；
Range hoods with induction apparatus of the Fig. 6 for prior art.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment one
Referring to Fig. 1～Fig. 4, a kind of top-sucking kitchen ventilator, including exhaust fume collecting hood 1, the fan shroud being arranged on above exhaust fume collecting hood 1
2 and the main air blower 3 that is arranged in fan shroud 2.Air inlet 11 is offered on exhaust fume collecting hood 1, soot gas are inhaled from air inlet 11
Enter, be discharged in common flue by main air blower 3.Fan shroud 2 includes four side walls 21, constitutes square fan shroud 2.
Exhaust fume collecting hood 1 includes lower cover 12, the base plate 15 of vertical side plate 13, upper cover plate 14 and level, above-mentioned air inlet
11 are opened in the middle of lower cover 12, and, from outer ledge to middle in being inclined upwardly, thus lower cover 12 is formed below for lower cover 12
Smoke collecting chamber 16.The outer ledge of lower cover 12 is connected to the inside edge of base plate 15, and the outer ledge of base plate 15 is connected to side plate
13 bottom, the inside edge that the top of side plate 13 is connected to the outer ledge of upper cover plate 14, lower cover 12 and upper cover plate 14 are equal
It is connected on the side wall 21 of 2 corresponding side of fan shroud.Upper cover plate 14 can be with 12 equidirectional inclination of lower cover.Upper cover plate 14, lower cover
A cavity 17 is limited between plate 12, side plate 13 and base plate 15.Above-mentioned lower cover 12, side plate 13, upper cover plate 14 and base plate 15
Can be integrally formed.
Oil network 4 is provided with below air inlet 11, it is solid that oil network 4 can be located at the part around air inlet 11 with lower cover 12
It is fixed.
21 bottom of side wall of fan shroud 2 extends to part of the lower cover 12 around the air inlet 11, and fan shroud 2
Side wall 21 is fixedly connected with lower cover 12, upper cover plate 14.
Accessory fan 5 is provided with the side wall 21 of 2 left and right sides of fan shroud and front side, in the present embodiment, wind is aided in
Machine 5 is axial flow blower, and towards in fan shroud 2, its minimum point is not less than the air inlet of exhaust fume collecting hood 1 to the air inlet 51 of accessory fan 5
11, the gas entered from the air inlet 11 of exhaust fume collecting hood 1 then, towards in cavity 17, is thus aspirated by the air outlet 52 of accessory fan 5
And be discharged in cavity 17.Lower cover 12 bends downwards extension near the position of outer ledge and forms outlet section 18, outlet section
18 bottom, the i.e. outer ledge of lower cover 12 are connected with base plate 15.The injection air outlet of strip is offered on outlet section 18
181, injection air outlet 181 extends on the length direction of corresponding outlet section 18, and such as the outlet section 18 of both sides is in front and rear direction
Extend, and the outlet section 18 of front side is then upwardly extended in left and right side.Injection air outlet 181 is inclined towards air inlet 11, itself and water
Square to angle of inclination be α, 15 °～45 ° of the preferred spans of α, the lower side of injection air outlet 181 along and exhaust fume collecting hood 1
Base plate 15 it is parallel, it is as base plate 15 is level, generally parallel with pan surface, thus can ensure that injection air outlet 181 is overall
Ejector action is being produced simultaneously substantially, without having successively because of the not parallel guiding for causing injection air outlet 181 to oil smoke, or
Person can not guide oil smoke (oil smoke is escaped before injection air outlet 181 is reached), cause fumes escaping.
Cavity 17, injection air outlet 181, smoke collecting chamber 16, the air inlet 11 of exhaust fume collecting hood 1 and accessory fan 5 are collectively formed and are followed
Circulation road, flow path of the gas in circulatory flow is as shown by arrows.Gas is produced negative in circulatory flow internal circulation flow
Pressure, guides the oil smoke of ascension to flow, assemble to air inlet of kitchen ventilator 11, hinders air to oil suction so as to solve traditional air curtain
The problem of cigarette machine inlet flow, greatly promotes smoke absorption effect, prevents fumes escaping, further, since ejection gas are recycle stream
The gas of dynamic entrainment oil smoke, and net air need not be blotted from foreign volume, in the case where air output is constant, compared to clean sky
Conductance stream can more improve the efficiency of fume-exhausting, simultaneously because the gas inside suction range hood is to carry out injection, therefore, will not
Cause the disturbance of outer gas stream, and avoid causing the escape of oil smoke because of the disturbance of outer gas stream.
The upper side edge of injection air outlet 181 along with the distance at the top of outlet section 18 being, 2mm ＜ d ＜ 5mm；Injection air outlet
Length in 181 horizontal direction is a, and the height on vertical direction is b, 2mm ＜ b ＜ 5mm, 10 ＜ a/b ＜ 50, it is ensured that certain
Injection air-flow wind speed, while reduce windage.
Embodiment two
Referring to Fig. 5, in the present embodiment, the difference with above-described embodiment one is that accessory fan 5 is replaced using centrifugal blower
For centrifugal blower, now, the centrifugal blower of front end is arranged on two, respectively close to the left and right sides, the centrifugal blower in left side
Blowing in cavity 17 to the left, and the then 17 interior blowing of cavity to the right of the centrifugal blower on right side；It is arranged on the centrifugation of the left and right sides
Blower fan, its air outlet forward, are respectively forwardly dried in the cavity 17 of side.
Claims (9)
1. a kind of top-sucking kitchen ventilator, including exhaust fume collecting hood (1) and the accessory fan (5) for injection, the exhaust fume collecting hood (1) to
It is upper depression and formed smoke collecting chamber (16), air inlet (11) is offered on the exhaust fume collecting hood (1), the exhaust fume collecting hood (1) is in air inlet
(11) cavity (17) is formed in the part around, the air outlet (52) of the accessory fan (5) is interior towards cavity (17), the sky
The exterior bottom in chamber (17) be provided be inclined upwardly towards air inlet (11) injection air outlet (181), it is characterised in that：Institute
State the air inlet (51) of accessory fan (5) minimum point be not less than the air inlet (11) of exhaust fume collecting hood (1), and aspirate from exhaust fume collecting hood
(1) gas that air inlet (11) is entered, the cavity (17), injection air outlet (181), smoke collecting chamber (16), exhaust fume collecting hood (1)
Air inlet (11) and accessory fan (5) constitute the circulatory flow of gas circulating flow.
2. top-sucking kitchen ventilator as claimed in claim 1, it is characterised in that：The injection air outlet (181) and level side
To angle of inclination be α, 15 °～45 ° of the span of α.
3. top-sucking kitchen ventilator as claimed in claim 1, it is characterised in that：The injection air outlet (181) is bar shaped wind
Mouthful, the lower side edge of the injection air outlet (181) is level.
4. top-sucking kitchen ventilator as claimed in claim 3, it is characterised in that：The injection air outlet (181) is in level side
Length upwards is a, and the height of in the vertical direction is b, a and b satisfaction：10 ＜ a/b ＜ 50.
5. the top-sucking kitchen ventilator as any one of Claims 1 to 4, it is characterised in that：Above the exhaust fume collecting hood (1)
Fan shroud (2) is provided with, the exhaust fume collecting hood (1) includes lower cover (12), vertical side plate (13), upper cover plate (14) and level
Base plate (15), the air inlet (11) are opened in the middle of lower cover (12), and the lower cover (12) from outer ledge to centre is in
It is inclined upwardly, thus lower cover (12) smoke collecting chamber (16) formed below, the outer ledge of the lower cover (12) is connected to
The inside edge of base plate (15), the outer ledge of the base plate (15) are connected to the bottom of side plate (13), the side plate (13)
Top is connected to the inside edge of the outer ledge of upper cover plate (14), the lower cover (12) and upper cover plate (14) and is all connected to wind
On corresponding side wall (21) of hood (2), the upper cover plate (14), restriction between lower cover (12), side plate (13) and base plate (15)
Go out the cavity (17).
6. top-sucking kitchen ventilator as claimed in claim 5, it is characterised in that：The accessory fan (5) is arranged on the wind
On left and right, front side side wall (21) of hood (2), and it is located between upper cover plate (14) and lower cover (12).
7. top-sucking kitchen ventilator as claimed in claim 5, it is characterised in that：The lower cover (12) is near outer ledge
Position bends downwards extension and forms outlet section (18), and the bottom of the outlet section (18) is connected with base plate (15), the injection
Air outlet (181) is opened on the outlet section (18).
8. top-sucking kitchen ventilator as claimed in claim 5, it is characterised in that：The lower cover (12), side plate (13), upper lid
Plate (14) and base plate (15) are integrally formed.
9. the top-sucking kitchen ventilator as any one of Claims 1 to 4, it is characterised in that：The accessory fan (5) is
Axial flow blower or centrifugal blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252124.4A CN106524267B (en) | 2016-12-30 | 2016-12-30 | Ceiling type range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252124.4A CN106524267B (en) | 2016-12-30 | 2016-12-30 | Ceiling type range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106524267A true CN106524267A (en) | 2017-03-22 |
| CN106524267B CN106524267B (en) | 2020-08-11 |
Family
ID=58335739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611252124.4A Active CN106524267B (en) | 2016-12-30 | 2016-12-30 | Ceiling type range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106524267B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084417A (en) * | 2017-06-06 | 2017-08-22 | 祝子荣 | A kind of oil smoke integrated stove for possessing full negative pressure chamber |
| CN107575919A (en) * | 2017-10-27 | 2018-01-12 | 珠海格力电器股份有限公司 | Fume exhaust fan |
| CN108006758A (en) * | 2017-06-30 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of top-sucking kitchen ventilator with blower mechanism |
| CN109000295A (en) * | 2018-09-27 | 2018-12-14 | 佛山市顺德区美的洗涤电器制造有限公司 | Smoke machine shell and range hood with it |
| CN109059072A (en) * | 2018-09-21 | 2018-12-21 | 珠海格力电器股份有限公司 | Smoke exhaust system and kitchen electrical system |
| CN109253484A (en) * | 2018-11-13 | 2019-01-22 | 林德祥 | Smoke evacuation system |
| CN109595620A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of range hood |
| CN109595622A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of range hood |
| CN109595638A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of near-suction type oil smoke suction machine |
| CN109595619A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of smoke deflector and application have the range hood of the smoke deflector |
| CN110173731A (en) * | 2019-06-26 | 2019-08-27 | 杭州老板电器股份有限公司 | A kind of side-suction type range hood with ejection structure |
| CN110186095A (en) * | 2019-06-26 | 2019-08-30 | 杭州老板电器股份有限公司 | A kind of dual injection helps the range hood of suction |
| CN110388668A (en) * | 2018-04-17 | 2019-10-29 | 宁波方太厨具有限公司 | A kind of range hood |
| WO2021031449A1 (en) * | 2019-08-22 | 2021-02-25 | 美的集团股份有限公司 | Range hood |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084417A (en) * | 2017-06-06 | 2017-08-22 | 祝子荣 | A kind of oil smoke integrated stove for possessing full negative pressure chamber |
| CN108006758B (en) * | 2017-06-30 | 2024-02-20 | 宁波方太厨具有限公司 | Top suction type range hood with blowing mechanism |
| CN108006758A (en) * | 2017-06-30 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of top-sucking kitchen ventilator with blower mechanism |
| CN109595638A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of near-suction type oil smoke suction machine |
| CN109595620B (en) * | 2017-09-30 | 2024-02-20 | 宁波方太厨具有限公司 | Fume exhauster |
| CN109595620A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of range hood |
| CN109595622A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of range hood |
| CN109595619A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of smoke deflector and application have the range hood of the smoke deflector |
| CN109595619B (en) * | 2017-09-30 | 2024-02-20 | 宁波方太厨具有限公司 | Smoke guide plate and range hood using same |
| CN109595638B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Near-suction type range hood |
| CN109595622B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN107575919B (en) * | 2017-10-27 | 2019-03-22 | 珠海格力电器股份有限公司 | Fume exhaust fan |
| CN107575919A (en) * | 2017-10-27 | 2018-01-12 | 珠海格力电器股份有限公司 | Fume exhaust fan |
| CN110388668A (en) * | 2018-04-17 | 2019-10-29 | 宁波方太厨具有限公司 | A kind of range hood |
| CN109059072A (en) * | 2018-09-21 | 2018-12-21 | 珠海格力电器股份有限公司 | Smoke exhaust system and kitchen electrical system |
| CN109000295B (en) * | 2018-09-27 | 2023-09-08 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood shell and range hood with same |
| CN109000295A (en) * | 2018-09-27 | 2018-12-14 | 佛山市顺德区美的洗涤电器制造有限公司 | Smoke machine shell and range hood with it |
| CN109253484A (en) * | 2018-11-13 | 2019-01-22 | 林德祥 | Smoke evacuation system |
| CN110173731B (en) * | 2019-06-26 | 2023-12-26 | 杭州老板电器股份有限公司 | Side-draft range hood with injection structure |
| CN110186095A (en) * | 2019-06-26 | 2019-08-30 | 杭州老板电器股份有限公司 | A kind of dual injection helps the range hood of suction |
| CN110173731A (en) * | 2019-06-26 | 2019-08-27 | 杭州老板电器股份有限公司 | A kind of side-suction type range hood with ejection structure |
| WO2021031449A1 (en) * | 2019-08-22 | 2021-02-25 | 美的集团股份有限公司 | Range hood |
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