CN110274273B - Noise-reducing type range hood - Google Patents
Noise-reducing type range hood Download PDFInfo
- Publication number
- CN110274273B CN110274273B CN201810206145.5A CN201810206145A CN110274273B CN 110274273 B CN110274273 B CN 110274273B CN 201810206145 A CN201810206145 A CN 201810206145A CN 110274273 B CN110274273 B CN 110274273B
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- fan
- plate
- range hood
- uproar
- 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
- 230000009467 reduction Effects 0.000 claims abstract description 101
- 239000011148 porous material Substances 0.000 claims abstract description 30
- 239000011324 bead Substances 0.000 claims description 10
- 239000003517 fume Substances 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims 4
- 230000009471 action Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000010411 cooking Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The utility model provides a type range hood falls, including fan frame and fan, fan frame front side is equipped with the fan apron, install the device of making an uproar that falls on the fan apron, the device of making an uproar is including making an uproar orifice plate falls, preceding apron and air supporting board, it has the hole of making an uproar to fall to open on the orifice plate of making an uproar to fall, the front side of orifice plate of making an uproar is located to preceding apron, and be formed with the chamber of making an uproar between orifice plate of making an uproar and the preceding apron, be formed with the air inlet passageway between orifice plate of making an uproar and the fan air intake, in the air supporting board locates the air inlet passageway, the air supporting board drives preceding apron upward movement under the air current impact in the air inlet passageway in order to reduce the volume of making an uproar in the chamber of making an uproar, this device of making an uproar still includes the driving piece that makes the preceding apron keep the downward movement trend. The air floating plate of the noise reduction type range hood can drive the front cover plate to move upwards relative to the noise reduction pore plate under the action of air flow, so that the volume of a noise reduction cavity is reduced, the resonance frequency of the noise reduction cavity is automatically matched with the wind noise frequency generated by different gears of the range hood, and the self-adaptive stepless variable frequency noise reduction of the range hood can be realized.
Description
Technical Field
The invention relates to a range hood, in particular to a noise reduction type range hood.
Background
Chinese cooking can generate a large amount of oil smoke, and in order to keep the kitchen environment clean and the health of human bodies, the range hood has become one of the indispensable devices of modern family kitchens. In the operation process of the range hood, the air flow moves to generate turbulence so as to generate noise, and the cooking experience and the physical health of people are affected. In order to reduce noise of the range hood, various range hoods with noise reduction structures are invented, such as a silent range hood disclosed in China patent publication No. 201310627557. X (issued publication No. CN 103697512B), wherein a sound-absorbing guide cover is arranged at a position opposite to a front air inlet of a volute, micropores are arranged on the sound-absorbing guide cover, and the sound-absorbing guide cover is obliquely arranged opposite to a rear panel of the front air inlet, so that the caliber of a front oil smoke channel between the sound-absorbing guide cover and the front air inlet of the volute is gradually reduced from bottom to top, airflow is accelerated to rise, and the airflow is guided to enter the front air inlet of the volute. Although, the micropore in this silence formula range hood has played the effect of inhaling sound and making an uproar, and the rear panel slope sets up and has played the effect of accelerating the air current, makes its quick air intake that gets into, because the noise frequency of common range hood mainly distributes around 100HZ ~ 2000HZ, belongs to low frequency noise, and the micropore board sound absorption structure has good effect of making an uproar, but has very strong selectivity to sound absorption frequency, only has good absorption to the noise near the resonance frequency, and its sound absorption frequency band is narrower in above-mentioned patent.
In addition, chinese cooking is complicated and variable, such as frying, steaming, etc., so that a common range hood is generally provided with a plurality of gears, such as a quick-frying gear, a high gear, a low gear, a mute gear, etc., to provide users with different dishes. Obviously, when the user uses different gears, the amount of wind suction that it produced is different, and the noise that it produced is also different, and the noise reduction measure of current range hood can not carry out corresponding regulation according to the fan gear change, can not carry out the stepless regulation of self-adaptation according to the fan gear difference yet, and noise reduction effect is intelligent inadequately, and user experience is relatively poor. In view of the above, there is a need for further improving the noise reduction structure of the existing range hood.
Disclosure of Invention
The invention aims to solve the technical problem of providing the noise reduction type range hood capable of adaptively and steplessly adjusting the resonance frequency of the noise reduction cavity according to different gear positions of a fan.
The technical scheme adopted for solving the technical problems is as follows: this range hood of making an uproar falls, including the fan frame with locate the fan in the fan frame, fan frame front side is equipped with the fan apron install noise reduction device on the fan apron, its characterized in that: the noise reduction device comprises a noise reduction pore plate, a front cover plate and an air floating plate, noise reduction pores are formed in the noise reduction pore plate, an air inlet channel is formed between the noise reduction pore plate and an air inlet of a fan, first division bars which are vertically distributed at intervals are arranged on the front side surface of the noise reduction pore plate, the front cover plate is arranged on the front side of the noise reduction pore plate, second division bars which are vertically distributed at intervals are arranged on the rear side of the front cover plate, noise reduction cavities are formed between the adjacent first division bars and the second division bars at intervals, at least one noise reduction pore is corresponding to each noise reduction cavity, the air floating plate is arranged in the air inlet channel, the air floating plate can drive the front cover plate to move upwards relative to the noise reduction pore plate under the impact of air flow so as to reduce the volume of the noise reduction cavity, and the noise reduction device further comprises a driving piece which enables the front cover plate to keep a downward movement trend.
Preferably, the first parting bead and the second parting bead are both arranged horizontally. After the first parting bead and the second parting bead are horizontally arranged, the noise reduction cavity is also horizontally arranged from top to bottom in sequence.
In order to enable each noise reduction cavity to have a good noise reduction effect, each noise reduction cavity is provided with a row of noise reduction holes, and the noise reduction holes in the row are uniformly distributed at intervals along the horizontal direction.
In order to enable the noise reduction device to reduce noise uniformly, the volume of each noise reduction cavity is equal in size. And the volume of the noise reduction cavity can be synchronously increased or decreased.
Further preferably, the fan cover plate is provided with a mounting window which is matched with the noise reduction pore plate in size, the noise reduction pore plate is mounted on the mounting window, and the rear side surface of the noise reduction pore plate and the rear side surface of the fan cover plate are positioned on the same plane.
Preferably, in any of the above aspects, connectors for connecting the air bearing plate are fixed to both left and right sides of the front cover plate, and the driving member applies force to the connectors to keep the front cover plate in a downward movement tendency.
Further preferably, the left and right sides of the air supporting plate extend forwards and have connecting columns, the connecting piece is provided with mounting holes for the insertion of the connecting columns, the top of the connecting piece is provided with blind holes, the driving piece is an air spring, and the movable end of the air spring is vertically inserted downwards into the blind holes. Thus, when the air spring works, the front cover plate and the air floating plate can be driven to move downwards.
Further preferably, guide grooves in vertical distribution are formed in the left side and the right side of the noise reduction pore plate, and the connecting columns are limited in the guide grooves. Thus, the noise reduction pore plate can guide the up-and-down movement of the air floating plate.
In order to guide the up-and-down movement of the front cover plate, a guide column extending downwards is arranged at the bottom of the connecting piece, and a support matched with the guide column in a guiding way is arranged at a corresponding position on the fan cover plate.
Further preferably, the noise reduction type range hood further comprises a fume collecting hood, wherein the fume collecting hood is arranged below the fan frame and is provided with an air inlet communicated with the air inlet of the fan.
Compared with the prior art, the invention has the advantages that: the noise reduction cavity is formed between the noise reduction pore plate and the front cover plate of the noise reduction type range hood, the air floating plate arranged in the air inlet channel can drive the front cover plate to move upwards relative to the noise reduction pore plate under the action of air flow, so that the volume of the noise reduction cavity is reduced, moreover, the larger the air speed is, the smaller the volume of the noise reduction cavity is, and the resonance frequency of the noise reduction cavity is automatically matched with the wind noise frequency generated by different gears of the range hood, thereby realizing self-adaptive stepless variable-frequency noise reduction of the range hood and ensuring more ideal noise reduction effect.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of a range hood according to an embodiment of the present invention;
FIG. 4 is an exploded view of the noise reducer mounting structure according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of a noise reduction device according to an embodiment of the present invention;
FIG. 6 is a schematic view of an installation structure of an air bearing plate according to an embodiment of the present invention;
fig. 7 is an enlarged schematic view of the portion a in fig. 1.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 7, the noise reduction type range hood in this embodiment includes a fan frame 1 with a fan 2 mounted therein, a fan air inlet 21 provided on the front side of the fan 2, a fan cover plate 3 mounted on the front side of the fan frame 1, and a noise reduction device 4 mounted on the fan cover plate 3, with the direction indicated by an arrow B in fig. 2 as a forward direction. A fume collecting hood 7 is arranged below the fan frame 1, and the fume collecting hood 7 is provided with an air inlet communicated with a fan air inlet 21.
In the present embodiment, the noise reduction device 4 includes main components such as a noise reduction orifice plate 41, a front cover plate 42, and an air bearing plate 43.
Wherein, open on fan apron 3 with the orifice plate of making an uproar 41 size looks adaptation's installing window 31, make an uproar the orifice plate of making an uproar 41 is the fixed plate board of installing on fan apron 3, the trailing flank of orifice plate of making an uproar 41 is in the coplanar with the trailing flank of fan apron 3, is formed with air inlet channel 6 between orifice plate of making an uproar 41 and the fan air intake 21. The front side of the noise reduction pore plate 41 is provided with first parting strips 412 which are vertically distributed at intervals, the first parting strips 412 are horizontally arranged, the adjacent first parting strips 412 are equal in interval, noise reduction holes 411 are formed in a strip-shaped area between two adjacent first parting strips 412, and the noise reduction holes 411 are evenly distributed along the horizontal direction at intervals.
The front cover plate 42 is a movable plate arranged on the front side of the noise reduction pore plate 41, the rear side of the front cover plate 42 is provided with second division bars 421 which are vertically distributed at intervals, the second division bars 421 are horizontally arranged, and the adjacent second division bars 421 have equal intervals. And, the second division bars 421 and the first division bars 412 are spaced apart from each other, and noise reduction cavities 5 are formed between the adjacent first division bars 412 and second division bars 421, so that the volume of each noise reduction cavity 5 is equal, and each noise reduction cavity 5 corresponds to a row of noise reduction holes 411 which are uniformly distributed at horizontal intervals.
The air floating plate 43 is connected to the front cover plate 42, and the air floating plate 43 is integrally located in the air inlet channel 6, and the air floating plate 43 can drive the front cover plate 42 to move upwards synchronously under the action of air flow in the air inlet channel 6, so that the volume of the noise reduction cavity 5 is reduced.
In this embodiment, the specific connection structure between the air bearing plate 43 and the front cover plate 42 is as follows:
connecting pieces 44 are fixed to the left and right sides of the front cover plate 42, connecting posts 431 extend forward from the left and right sides of the air bearing plate 43, and mounting holes 441 are formed in the connecting pieces 44 to allow the connecting posts 431 to be inserted. The top of the connecting piece 44 is provided with a blind hole 442, a gas spring 45 is arranged above the connecting piece 44, and the movable end of the gas spring 45 is vertically inserted into the blind hole 442 downwards, so that the force applied by the gas spring 45 to the connecting piece 44 keeps the front cover plate 42 in a downward movement trend.
In addition, in order to guide the up-and-down movement of the air floating plate 43 and the front cover plate 42, guide grooves 413 are arranged on the left side and the right side of the noise reduction pore plate 41, connecting columns 431 are limited in the guide grooves 413, guide columns 443 extending downwards are arranged at the bottoms of the connecting pieces 44, and supports 32 matched with the guide columns 443 in a guiding manner are arranged at corresponding positions on the fan cover plate 3.
The noise reduction device 4 of the range hood works as follows:
the air floating plate 43 is in an initial state under no air flow force, at this time, the distance between the first parting bead 412 and the corresponding second parting bead 421 is the largest, and accordingly, the volume of the noise reduction cavity 5 is the largest. When the range hood works, the air floating plate 43 moves upwards under the action of air flow in the air inlet channel 6, the noise reduction pore plate 41 moves upwards synchronously along with the air floating plate 43, and the distance between the first parting bead 412 and the corresponding second parting bead 421 is reduced, so that the volume of the noise reduction cavity 5 is reduced. As the air bearing plate 43 rises, the movable end of the air spring 45 contracts, and the air spring 45 applies a downward force to the connecting piece 44, so that the front cover plate 42 and the air bearing plate 43 have a downward movement tendency.
The larger the wind speed, the larger the upward acting force applied to the air floating plate 43, and the larger the rising distance of the air floating plate 43, so that the smaller the volume of the noise reduction cavity 5. As is known from the helmholtz resonance principle, the volume of the noise reduction cavity increases and the resonance frequency f decreases without changing other parameters, whereas the volume of the noise reduction cavity decreases and the resonance frequency f increases. Therefore, the resonance frequency of the noise reduction cavity of the range hood noise reduction device can be automatically matched with the wind noise frequency generated by different gears of the range hood, so that the self-adaptive stepless variable-frequency noise reduction of the range hood is realized.
Claims (9)
1. The utility model provides a range hood of making an uproar falls, includes fan frame (1) and locates fan (2) in the fan frame, and fan frame (1) front side is equipped with fan apron (3) install noise reduction device (4), its characterized in that on fan apron (3): the noise reduction device (4) comprises a noise reduction pore plate (41), a front cover plate (42) and an air floating plate (43), noise reduction holes (411) are formed in the noise reduction pore plate (41), an air inlet channel (6) is formed between the noise reduction pore plate (41) and an air inlet (21) of a fan, first partition strips (412) which are distributed vertically at intervals are arranged on the front side surface of the noise reduction pore plate (41), the front cover plate (42) is arranged on the front side of the noise reduction pore plate (41), second partition strips (421) which are distributed vertically at intervals are arranged on the rear side of the front cover plate (42), noise reduction cavities (5) are formed between the first partition strips (412) and the second partition strips (421) which are distributed at intervals, each noise reduction cavity (5) corresponds to at least one noise reduction hole (411), the air floating plate (43) is arranged in the air inlet channel (6), the air floating plate (43) can drive the front cover plate (42) to move upwards relative to the noise reduction pore plate (41) so that the noise reduction cavity (5) moves upwards, the noise reduction cavity (5) is driven by the smoke cover plate (4) is further comprises a smoke cover plate (7) which is arranged below a smoke cover (7), the fume collecting hood (7) is provided with an air inlet communicated with the air inlet (21) of the fan.
2. The noise reduction range hood of claim 1, wherein: the first parting bead (412) and the second parting bead (421) are both horizontally arranged.
3. The noise reduction range hood according to claim 2, wherein: each noise reduction cavity (5) is provided with a row of noise reduction holes (411), and the noise reduction holes (411) are uniformly distributed at intervals along the horizontal direction.
4. The noise reduction range hood of claim 1, wherein: the volume of each noise reduction cavity (5) is equal.
5. The noise reduction range hood of claim 1, wherein: the fan cover plate (3) is provided with a mounting window (31) which is matched with the noise reduction pore plate (41) in size, the noise reduction pore plate (41) is mounted on the mounting window (31), and the rear side surface of the noise reduction pore plate (41) and the rear side surface of the fan cover plate (3) are positioned on the same plane.
6. The noise-reducing range hood according to any one of claims 1 to 5, wherein: connecting pieces (44) for connecting the air floating plate (43) are fixed on the left side and the right side of the front cover plate (42), and the driving piece applies force on the connecting pieces (44) so as to keep the front cover plate (42) in a downward movement trend.
7. The noise-reducing range hood of claim 6, wherein: connecting columns (431) extend forwards from the left side and the right side of the air floating plate (43), mounting holes (441) for the connecting columns (431) to be inserted are formed in the connecting pieces (44), blind holes (442) are formed in the tops of the connecting pieces (44), the driving pieces are air springs (45), and movable ends of the air springs (45) are vertically inserted into the blind holes (442) downwards.
8. The noise-reducing range hood of claim 7, wherein: guide grooves (413) which are vertically distributed are formed in the left side and the right side of the noise reduction pore plate (41), and the connecting column (431) is limited in the guide grooves (413).
9. The noise-reducing range hood of claim 6, wherein: the bottom of the connecting piece (44) is provided with a guide post (443) extending downwards, and a support (32) matched with the guide post (443) in a guiding way is arranged at a corresponding position on the fan cover plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810206145.5A CN110274273B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810206145.5A CN110274273B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110274273A CN110274273A (en) | 2019-09-24 |
| CN110274273B true CN110274273B (en) | 2024-02-20 |
Family
ID=67958632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810206145.5A Active CN110274273B (en) | 2018-03-13 | 2018-03-13 | Noise-reducing type range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110274273B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701655B (en) | 2019-11-11 | 2020-11-06 | 佛山市顺德区美的洗涤电器制造有限公司 | Fume exhaust fan |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130010335A (en) * | 2011-07-18 | 2013-01-28 | 한국철도기술연구원 | Diffraction noise reduction device for noise barrier upper edge using helmholtz resonance absorber |
| WO2016061829A1 (en) * | 2014-10-25 | 2016-04-28 | 佛山市顺德区合捷电器实业有限公司 | Noise-reducing silent range hood and smoke discharging tube |
| CN205388048U (en) * | 2015-12-29 | 2016-07-20 | 天津市普瑞仪器有限公司 | Noise reduction type turbine fan |
| CN106321524A (en) * | 2016-11-18 | 2017-01-11 | 湖南核三力技术工程有限公司 | Damping, muffling and air compensation device for orifice plate |
| CN206330187U (en) * | 2016-12-29 | 2017-07-14 | 宁波方太厨具有限公司 | A kind of single air-inlet range hood |
| CN208170472U (en) * | 2018-03-13 | 2018-11-30 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
-
2018
- 2018-03-13 CN CN201810206145.5A patent/CN110274273B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130010335A (en) * | 2011-07-18 | 2013-01-28 | 한국철도기술연구원 | Diffraction noise reduction device for noise barrier upper edge using helmholtz resonance absorber |
| WO2016061829A1 (en) * | 2014-10-25 | 2016-04-28 | 佛山市顺德区合捷电器实业有限公司 | Noise-reducing silent range hood and smoke discharging tube |
| CN205388048U (en) * | 2015-12-29 | 2016-07-20 | 天津市普瑞仪器有限公司 | Noise reduction type turbine fan |
| CN106321524A (en) * | 2016-11-18 | 2017-01-11 | 湖南核三力技术工程有限公司 | Damping, muffling and air compensation device for orifice plate |
| CN206330187U (en) * | 2016-12-29 | 2017-07-14 | 宁波方太厨具有限公司 | A kind of single air-inlet range hood |
| CN208170472U (en) * | 2018-03-13 | 2018-11-30 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110274273A (en) | 2019-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110274270B (en) | Noise-reducing type range hood | |
| CN211119553U (en) | Fume exhaust fan | |
| CN110274273B (en) | Noise-reducing type range hood | |
| CN102401408A (en) | No-outer-cover type range hood with randomly-adjusted orientation | |
| CN200965272Y (en) | Inner circulation lower-discharge type smoke-exhaust oven combined machine | |
| CN110094774B (en) | Noise-reducing type range hood | |
| CN208312474U (en) | A kind of noise reducing type range hood | |
| CN110274272B (en) | Noise-reducing type range hood | |
| CN110274271B (en) | Noise-reducing type range hood | |
| CN207906157U (en) | A kind of denoising structure of wind turbine deflector | |
| CN208170472U (en) | A kind of noise reducing type range hood | |
| CN110274276B (en) | Noise-reducing type range hood | |
| CN208090761U (en) | A kind of noise reducing type range hood | |
| CN208090759U (en) | A kind of noise reducing type range hood | |
| CN208312473U (en) | A kind of noise reducing type range hood | |
| CN207907315U (en) | A kind of noise reducing type range hood | |
| CN108916954B (en) | Smoke-leakage-preventing integrated stove and manufacturing method thereof | |
| CN110274277B (en) | Noise-reduction type range hood and noise-reduction control method thereof | |
| CN105953276B (en) | Lift the kitchen cabinet forced fume exhaust device of dock | |
| CN111878863B (en) | Cooking fume exhauster | |
| CN209512139U (en) | Range hood | |
| CN110094367B (en) | Noise reduction structure of fan guide plate | |
| CN2627385Y (en) | Air curtain type oil smoke leak-proof device | |
| CN110094776B (en) | Noise-reducing type range hood | |
| CN110274275B (en) | Noise-reducing type range hood |
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 |