CN105716135A - Extractor hood - Google Patents
Extractor hood Download PDFInfo
- Publication number
- CN105716135A CN105716135A CN201610235485.1A CN201610235485A CN105716135A CN 105716135 A CN105716135 A CN 105716135A CN 201610235485 A CN201610235485 A CN 201610235485A CN 105716135 A CN105716135 A CN 105716135A
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- Prior art keywords
- range hood
- silencing means
- casing
- hood according
- windward side
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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 an extractor hood. The extractor hood comprises a hood shell, a volute and a silencer. The volute is arranged in the hood shell and provided with a front air inlet right opposite to the front wall of the hood shell. The silencer is arranged on the hood shell side wall of the hood shell. A silencing cavity is formed between the silencer and the hood shell side wall. The silencer is provided with a plurality of silencing holes communicating with the interior of the silencing cavity. By means of the silencer, the noise of the extractor hood can be lowered, and the quality of the extractor hood can be improved.
Description
Technical field
The present invention relates to a kind of range hood.
Background technology
In range hood technical field, the size of noise is to evaluate an important indicator of range hood quality, and the noise source of range hood is substantially from the rotational noise of impeller and two parts of turbulence noise.Owing to the turbulence noise of range hood is mainly derived from the advance air port of centrifuge air inlet.Wherein, rising along with oil smoke, the oil smoke passage of range hood there will be back segment oil smoke flowing velocity and is slower than the situation of leading portion oil smoke flowing velocity, so that there is being unfavorable for the change of the inspiration of oil smoke and discharge in the parameter such as blast, windage, therefore existing range hood mist extractor effect need to improve, oil smoke in the oil smoke passage of front end flowing simultaneously is disorderly and unsystematic, increases the condition that turbulent flow produces, and the noise of lampblack absorber is bigger.
Summary of the invention
It is contemplated that solve one of above-mentioned technical problem of the prior art at least to a certain extent.For this, it is an object of the present invention to propose a kind of range hood, this range hood noise is low.
Range hood according to the present invention, including: casing；Spiral case, described spiral case is arranged in described casing, and described spiral case has just advance air port to casing antetheca；Silencing means, described silencing means is arranged on the chassis sidewall of described casing, forms silencing cavity between described silencing means and described chassis sidewall, and described silencing means offers the internal bloop connected of multiple and described silencing cavity.
Range hood according to the present invention, by arranging silencing means, it is possible to effectively water conservancy diversion and current stabilization, it is possible to avoid the generation of turbulent flow, it is possible to reduce noise, and can so that flue gas better flows to spiral case.And, the bloop on silencing means effectively taps flue gas, it is possible to by the friction of hole wall and damping, it is possible to consume a part of acoustic energy, such that it is able to reduce the noise of range hood.Thus, little according to the range hood noise of the present invention, quality is better.
It addition, the range hood according to the present invention can also have following additional technical feature:
In some examples of the present invention, described chassis sidewall includes left side wall and right side wall, and described silencing means symmetrically arranges with one another on described left side wall and described right side wall.
In some examples of the present invention, described spiral case has the advance solar or lunar halo around described advance air port, and the windward side relative to each other of two described silencing means lays respectively at the left and right sides of described advance solar or lunar halo.
In some examples of the present invention, the cross section of the exhaust gases passes formed between the windward side relative to each other of two described silencing means tapers off trend from bottom to top.
In some examples of the present invention, described silencing means has windward side, and described windward side is configured to the inclined-plane that relatively described sidewall slope extends.
In some examples of the present invention, described silencing means has windward side, described windward side is divided into epimere windward side and hypomere windward side, described epimere windward side to be configured to the arcwall face towards described sidewalls flex, and described hypomere windward side is configured to the inclined-plane that relatively described sidewall slope extends.
In some examples of the present invention, the casing roof of the top of described silencing means and described casing separates between the upper and lower, the casing antetheca time interval of the forefront of described silencing means and described casing is opened, and the most tailing edge of described silencing means is opened with the advance solar or lunar halo time interval of described spiral case.
In some examples of the present invention, described range hood also includes: quieter material, and described quieter material is arranged in described silencing cavity.
In some examples of the present invention, described silencing means includes: main silencer wall, antetheca, rear wall and roof, described antetheca is arranged on the edge, front side of described main silencer wall, described rear wall is arranged on the rear side edge of described main silencer wall, and described roof is arranged on the edge, top of described main silencer wall and is connected with the upper end of the upper end of described antetheca, described rear wall respectively.
In some examples of the present invention, described silencing means also includes: installing crossbeam, described installation crossbeam is connected between described antetheca and described rear wall between the upper and lower separatedly, and described installation crossbeam is for fixing with described chassis sidewall.
In some examples of the present invention, described main silencer wall, described antetheca and described rear wall all offer multiple described bloop.
In some examples of the present invention, described range hood also includes: acoustic reflection structure, and described advance air port is just being arranged and for being reflected towards the described silencing means of both sides by noise by described acoustic reflection structure.
In some examples of the present invention, described acoustic reflection structure is symmetrical structure.
In some examples of the present invention, described acoustic reflection structure includes: left reflecting surface and right reflecting surface, described left reflecting surface is cambered surface or inclined-plane, and described right reflecting surface is cambered surface or inclined-plane, and the junction of described left reflecting surface and described right reflecting surface is prominent towards described advance air port.
In some examples of the present invention, described acoustic reflection structure is fixed on the casing antetheca of described casing.
Accompanying drawing explanation
Fig. 1 is the front view of the range hood according to the first embodiment of the present invention；
Fig. 2 is the axonometric chart of the range hood according to the first embodiment of the present invention；
Fig. 3 is the side view of the range hood according to the first embodiment of the present invention；
Fig. 4 is the axonometric chart of the silencing means of range hood according to embodiments of the present invention；
Fig. 5 is the side view of the silencing means of range hood according to embodiments of the present invention；
Fig. 6 is the schematic diagram of the range hood according to the second embodiment of the present invention；
Fig. 7 is the schematic diagram of the range hood according to the third embodiment of the present invention；
Fig. 8 is the top view of range hood according to embodiments of the present invention；
Fig. 9 is the schematic diagram of the range hood according to the first embodiment of the present invention；
Figure 10 is the sectional view of range hood according to embodiments of the present invention.
Accompanying drawing labelling:
Range hood 100；
Casing 10；Casing antetheca 11；Chassis sidewall 12；Left side wall 12a；Right side wall 12b；
Spiral case 20；Advance air port 21；Advance solar or lunar halo 22；
Silencing means 30；Bloop 31；Windward side 32；Epimere windward side 32a；Hypomere windward side 32b；Main silencer wall 33；Antetheca 34；Rear wall 35；Crossbeam 36 is installed；
Acoustic reflection structure 40；Left reflecting surface 41；Right reflecting surface 42.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings range hood 100 according to embodiments of the present invention is described in detail.
Range hood 100 according to embodiments of the present invention may include that casing 10, spiral case 20 and silencing means 30.As shown in Figure 1, Figure 2 with shown in Fig. 9, spiral case 20 is arranged in casing 10, spiral case 20 has just advance air port 21 to casing antetheca 11, wherein, the lower section of casing 10 can be provided with exhaust fume collecting hood, the open at its lower end of exhaust fume collecting hood, thus the flue gas produced of cooking can flow to advance air port 21 from bottom to top, and flue gas can pass through advance air port 21 and enter in spiral case 20.Silencing means 30 is arranged on the chassis sidewall 12 of casing 10, forms silencing cavity between silencing means 30 and chassis sidewall 12, and silencing means 30 offers multiple bloop 31 of connecting internal with silencing cavity.By arranging bloop 31, it is possible to make silencing cavity be connected with the advance air port 21 of exhaust gases passes and spiral case 20.According to a preferred embodiment of the present invention, range hood 100 can also include: quieter material, and quieter material is arranged in silencing cavity.So, as shown in Figure 10, when flow of flue gas to the front side in advance air port 21, noise in flue gas can pass bloop 31 and enter silencing cavity, noise can be carried out multiple reflections absorption by the quieter material in silencing cavity, final again through bloop 31 by the sound wave after noise reduction to external radiation, thus reaching the purpose of noise reduction.
Wherein, owing to silencing means 30 is arranged on chassis sidewall 12, the shape of exhaust gases passes can be changed, can so that the flue gas flowed from bottom to top slows down the diffusion to both sides, such that it is able to play the effect of current stabilization and water conservancy diversion, it is possible to make flue gas flow direction advance air port 21 better, it is ensured that the flow velocity of the flue gas at advance air port 21 place, the generation of turbulent flow can be avoided, and then the noise of range hood 100 can be reduced.
And, partial fume can pass through bloop 31 and flow into silencing cavity, and wherein when flue gas is through bloop 31, bloop 31 can effectively tap flue gas, bloop 31 can consume a part of acoustic energy by the friction of hole wall and damping, such that it is able to reduce the noise of range hood 100 better.
It addition, quieter material can be absorbed into the noise in the flue gas in silencing cavity, it is possible to reduce the noise of range hood 100 further.Wherein, alternatively, quieter material can be two kinds, two kinds of quieter materials can spaced apart distribution in silencing cavity, one of which quieter material can be better to the assimilation effect of low frequency and intermediate frequency noise, and high frequency noise can be absorbed better by another quieter material, so that the noise of quieter material overall absorption different frequency, can so that range hood 100 noise is less, close to nothing.Alternatively, quieter material can be silencing cotton.
Range hood 100 according to embodiments of the present invention, by arranging silencing means 30, it is possible to effectively water conservancy diversion and current stabilization, it is possible to avoid the generation of turbulent flow, it is possible to reduce noise, it is possible to make flue gas better flow to spiral case 20.And, the bloop 31 on silencing means 30 effectively taps flue gas, and bloop 31 can consume a part of acoustic energy by the friction of hole wall and damping, such that it is able to reduce the noise of range hood 100 better.It addition, quieter material can be absorbed into the noise in the flue gas in silencing cavity, it is possible to reduce the noise of range hood 100 further.Thus, range hood 100 noise according to embodiments of the present invention is little, and quality is better.
According to a preferred embodiment of the present invention, as shown in Figure 1, Figure 2 with shown in Fig. 9, chassis sidewall 12 can include left side wall 12a and right side wall 12b, and silencing means 30 symmetrically arranges with one another on left side wall 12a and right side wall 12b.Thus, silencing means 30 structure is identical, it is possible to silencing means 30 is arranged in casing 10 simple and convenient, it is possible to improve the efficiency of assembling of range hood 100, and good water conservancy diversion and current stabilization effect can be played, it is possible to reduce the noise of range hood 100 further.According to a further advantageous embodiment of the invention, as shown in Figure 6, silencing means 30 can also be arranged on left side wall 12a and right side wall 12b asymmetrical relative to one anotherly.
Alternatively, as it is shown in figure 1, spiral case 20 has the advance solar or lunar halo 22 around advance air port 21, the windward side 32 relative to each other of two silencing means 30 lays respectively at the left and right sides of advance solar or lunar halo 22.So, flue gas can effectively be led advance solar or lunar halo 22 place by the windward side 32 of two silencing means 30, and the bloop 31 on windward side 32 and the quieter material in silencing cavity can effectively reduce the noise of flue gas.
Preferably, as shown in Fig. 1, Fig. 6 and Fig. 7, the cross section of the exhaust gases passes formed between the windward side 32 relative to each other of two silencing means 30 can taper off trend from bottom to top.In other words, exhaust gases passes narrows from bottom to top gradually, thus exhaust gases passes can effectively guide flue gas flow direction advance air port 21, and can accelerate flue gas flow rate, it is possible to avoid the generation of turbulent flow, it is possible to reduce the noise of flue gas.
A specific embodiment according to the present invention, as shown in Figure 6 and Figure 7, windward side 32 is it is so structured that opposing sidewalls tilts the inclined-plane extended.Thus, silencing means 30 simple in construction, it is convenient to arrange, it is possible to make range hood 100 simple in construction, and it is convenient to arrange.
Another specific embodiment according to the present invention, as shown in Figure 4 and Figure 5, windward side 32 can be divided into epimere windward side 32a and hypomere windward side 32b, epimere windward side 32a to be configured to the arcwall face towards sidewalls flex, and hypomere windward side 32b is configured to opposing sidewalls and tilts the inclined-plane extended.Thus, epimere windward side 32a can water conservancy diversion and conflux better, flue gas is after the guiding through hypomere windward side 32b, it is possible to flow to advance air port 21 more swimmingly by epimere windward side 32a.
Alternatively, as shown in figs. 3 and 10, the casing roof of the top of silencing means 30 and casing 10 separates between the upper and lower, and casing antetheca 11 time interval of the forefront of silencing means 30 and casing 10 is opened, and the most tailing edge of silencing means 30 is opened with advance solar or lunar halo 22 time interval of spiral case 20.In other words, silencing means 30 respectively and leaves gap between the casing roof of spiral case 20 and casing 10, casing 10 diapire and casing antetheca 11, gap can so that flue gas enters in silencing cavity by the bloop 31 on each wall, can so that the erasure effect of silencing means 30 be better, it is possible to reduce the noise of range hood 100 further.
Specifically, as shown in Figure 4, silencing means 30 may include that main silencer wall 33, antetheca 34, rear wall 35 and roof, antetheca 34 is arranged on the edge, front side of main silencer wall 33, rear wall 35 is arranged on the rear side edge of main silencer wall 33, roof is arranged on the edge, top of main silencer wall 33, and roof is connected with the upper end of the upper end of antetheca 34, rear wall 35 respectively.Windward side 32 is arranged on main silencer wall 33, wherein, limits silencing cavity between main silencer wall 33, antetheca 34, rear wall 35, roof and the chassis sidewall 12 of casing 10.Preferably, as shown in Figure 4 and Figure 5, main silencer wall 33, antetheca 34 and rear wall 35 all offer multiple bloop 31.Thus, noise in flue gas can enter in silencing cavity respectively through the bloop 31 on main silencer wall 33, antetheca 34 and rear wall 35, can so that the noise in flue gas be easy to enter in silencing cavity, can so that the erasure effect of silencing means 30 be better, it is possible to effectively reduce the noise of range hood 100.
According to a preferred embodiment of the present invention, as it is shown in figure 5, silencing means 30 can also include: install crossbeam 36, crossbeam 36 is installed and is connected to separatedly between the upper and lower between antetheca 34 and rear wall 35, crossbeam 36 is installed for fixing with chassis sidewall 12.Wherein, it is multiple for installing crossbeam 36, and each installation crossbeam 36 can be provided with installing hole, and fasteners through mounting holes is to be fixed on installation crossbeam 36 on chassis sidewall 12, thus silencing means 30 can be fixed on chassis sidewall 12 by securing member.
According to some embodiments of the present invention, as shown in Figure 8, range hood 100 can also include: acoustic reflection structure 40, and advance air port 21 is just being arranged and for being reflected towards the silencing means 30 of both sides by noise by acoustic reflection structure 40.Thus, the noise in flue gas can be reflected to the silencing means 30 of both sides by acoustic reflection structure 40, and silencing means 30 and quieter material can eliminate or reduce noise, such that it is able to reduce the noise of flue gas better, it is possible to reduce the noise of range hood 100.
Preferably, as shown in Figure 8, acoustic reflection structure 40 can be symmetrical structure.So, the noise of the silencing means 30 that acoustic reflection structure 40 is reflected towards both sides is close, so that the silencing means 30 of both sides and quieter material erasure effect are better, it is possible to the noise making range hood 100 is relatively low.
A specific embodiment according to the present invention, as shown in Figure 8, acoustic reflection structure 40 may include that left reflecting surface 41 and right reflecting surface 42, and left reflecting surface 41 is cambered surface or inclined-plane, right reflecting surface 42 is cambered surface or inclined-plane, and the junction of left reflecting surface 41 and right reflecting surface 42 highlights towards advance air port 21.Thus, a part of noise can be reflected towards being positioned at the silencing means 30 in left side by left reflecting surface 41, another part noise can be reflected towards being positioned at the silencing means 30 on right side by right reflecting surface 42, so that the noise being reflected towards the silencing means 30 of both sides is close, can so that silencing means 30 good muffling effect, it is possible to the noise making range hood 100 is low.
Alternatively, as shown in Figure 8, acoustic reflection structure 40 can be fixed on the casing antetheca 11 of casing 10.Acoustic reflection structure 40 can be fixed on casing antetheca 11 by securing member, and acoustic reflection structure 40 can have flange, and flange is provided for the installing hole of securing member traverse.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.Additionally, the different embodiments described in this specification or example can be carried out engaging and combining by those skilled in the art.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is illustrative of, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.
Claims (15)
1. a range hood, it is characterised in that including:
Casing；
Spiral case, described spiral case is arranged in described casing, and described spiral case has just advance air port to casing antetheca；
Silencing means, described silencing means is arranged on the chassis sidewall of described casing, forms silencing cavity between described silencing means and described chassis sidewall, and described silencing means offers the internal bloop connected of multiple and described silencing cavity.
2. range hood according to claim 1, it is characterised in that described chassis sidewall includes left side wall and right side wall, described silencing means symmetrically arranges with one another on described left side wall and described right side wall.
3. range hood according to claim 2, it is characterised in that described spiral case has the advance solar or lunar halo around described advance air port, the windward side relative to each other of two described silencing means lays respectively at the left and right sides of described advance solar or lunar halo.
4. range hood according to claim 2, it is characterised in that the cross section of the exhaust gases passes formed between the windward side relative to each other of two described silencing means tapers off trend from bottom to top.
5. range hood according to claim 1, it is characterised in that described silencing means has windward side, described windward side is configured to the inclined-plane that relatively described sidewall slope extends.
6. range hood according to claim 1, it is characterized in that, described silencing means has windward side, described windward side is divided into epimere windward side and hypomere windward side, described epimere windward side is configured to the arcwall face towards described sidewalls flex, and described hypomere windward side is configured to the inclined-plane that relatively described sidewall slope extends.
7. range hood according to claim 1, it is characterized in that, the casing roof of the top of described silencing means and described casing separates between the upper and lower, the casing antetheca time interval of the forefront of described silencing means and described casing is opened, and the most tailing edge of described silencing means is opened with the advance solar or lunar halo time interval of described spiral case.
8. range hood according to claim 1, it is characterised in that also include: quieter material, described quieter material is arranged in described silencing cavity.
9. range hood according to claim 1, it is characterised in that described silencing means includes:
Main silencer wall, antetheca, rear wall and roof, described antetheca is arranged on the edge, front side of described main silencer wall, described rear wall is arranged on the rear side edge of described main silencer wall, and described roof is arranged on the edge, top of described main silencer wall and is connected with the upper end of the upper end of described antetheca, described rear wall respectively.
10. range hood according to claim 9, it is characterised in that described silencing means also includes: installing crossbeam, described installation crossbeam is connected between described antetheca and described rear wall between the upper and lower separatedly, described installation crossbeam is for fixing with described chassis sidewall.
11. range hood according to claim 9, it is characterised in that all offer multiple described bloop on described main silencer wall, described antetheca and described rear wall.
12. range hood according to claim 2, it is characterised in that also include: acoustic reflection structure, described advance air port is just being arranged and for being reflected towards the described silencing means of both sides by noise by described acoustic reflection structure.
13. range hood according to claim 12, it is characterised in that described acoustic reflection structure is symmetrical structure.
14. range hood according to claim 13, it is characterized in that, described acoustic reflection structure includes: left reflecting surface and right reflecting surface, described left reflecting surface is cambered surface or inclined-plane, described right reflecting surface is cambered surface or inclined-plane, and the junction of described left reflecting surface and described right reflecting surface is prominent towards described advance air port.
15. range hood according to claim 12, it is characterised in that described acoustic reflection structure is fixed on the casing antetheca of described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235485.1A CN105716135B (en) | 2016-04-14 | 2016-04-14 | Range hood |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235485.1A CN105716135B (en) | 2016-04-14 | 2016-04-14 | Range hood |
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| Publication Number | Publication Date |
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| CN105716135A true CN105716135A (en) | 2016-06-29 |
| CN105716135B CN105716135B (en) | 2018-05-01 |
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| CN201610235485.1A Active CN105716135B (en) | 2016-04-14 | 2016-04-14 | Range hood |
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Cited By (12)
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| CN106091066A (en) * | 2016-08-22 | 2016-11-09 | 珠海格力电器股份有限公司 | Fume exhaust fan |
| CN106123064A (en) * | 2016-07-14 | 2016-11-16 | 广东美的厨房电器制造有限公司 | Range hood |
| CN106322474A (en) * | 2016-08-28 | 2017-01-11 | 杭州老板电器股份有限公司 | Flow-guiding, sound-absorbing and three-dimensional noise-reducing system of kitchen ventilator |
| CN106989424A (en) * | 2017-05-10 | 2017-07-28 | 佛山市樱顺卫厨用品有限公司 | A kind of cigarette machine and its noise-reduction method with centrifugal blower |
| CN108019806A (en) * | 2018-01-11 | 2018-05-11 | 广东美的厨房电器制造有限公司 | Range hood |
| CN108561936A (en) * | 2018-07-19 | 2018-09-21 | 杭州博易环境技术有限公司 | A kind of combinable smoke purifier |
| CN108709212A (en) * | 2018-07-11 | 2018-10-26 | 浙江工业大学 | A kind of preposition noise reduction filter device for range hood |
| CN109869775A (en) * | 2017-12-04 | 2019-06-11 | 美的集团股份有限公司 | Range hood |
| CN109869774A (en) * | 2017-12-04 | 2019-06-11 | 美的集团股份有限公司 | Range hood |
| CN110822507A (en) * | 2018-08-10 | 2020-02-21 | 佛山市顺德区美的洗涤电器制造有限公司 | Volute for range hood, fan and range hood |
| CN111022381A (en) * | 2020-01-03 | 2020-04-17 | 宁波方太厨具有限公司 | Flow guide noise reduction device and range hood applying same |
| CN114251694A (en) * | 2020-09-24 | 2022-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Oil nozzle, volute assembly, centrifugal fan and range hood |
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| CN106123064A (en) * | 2016-07-14 | 2016-11-16 | 广东美的厨房电器制造有限公司 | Range hood |
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| CN106989424A (en) * | 2017-05-10 | 2017-07-28 | 佛山市樱顺卫厨用品有限公司 | A kind of cigarette machine and its noise-reduction method with centrifugal blower |
| CN109869774A (en) * | 2017-12-04 | 2019-06-11 | 美的集团股份有限公司 | Range hood |
| CN109869775A (en) * | 2017-12-04 | 2019-06-11 | 美的集团股份有限公司 | Range hood |
| CN108019806A (en) * | 2018-01-11 | 2018-05-11 | 广东美的厨房电器制造有限公司 | Range hood |
| CN108709212A (en) * | 2018-07-11 | 2018-10-26 | 浙江工业大学 | A kind of preposition noise reduction filter device for range hood |
| CN108709212B (en) * | 2018-07-11 | 2023-10-20 | 浙江工业大学 | Front silencing and filtering device for range hood |
| CN108561936A (en) * | 2018-07-19 | 2018-09-21 | 杭州博易环境技术有限公司 | A kind of combinable smoke purifier |
| CN110822507A (en) * | 2018-08-10 | 2020-02-21 | 佛山市顺德区美的洗涤电器制造有限公司 | Volute for range hood, fan and range hood |
| CN111022381A (en) * | 2020-01-03 | 2020-04-17 | 宁波方太厨具有限公司 | Flow guide noise reduction device and range hood applying same |
| CN114251694A (en) * | 2020-09-24 | 2022-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Oil nozzle, volute assembly, centrifugal fan and range hood |
| CN114251694B (en) * | 2020-09-24 | 2023-07-28 | 佛山市顺德区美的洗涤电器制造有限公司 | Oil nozzle, volute assembly, centrifugal fan and range hood |
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|---|---|
| CN105716135B (en) | 2018-05-01 |
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