CN206330187U - A kind of single air-inlet range hood - Google Patents
A kind of single air-inlet range hood Download PDFInfo
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- CN206330187U CN206330187U CN201621469574.4U CN201621469574U CN206330187U CN 206330187 U CN206330187 U CN 206330187U CN 201621469574 U CN201621469574 U CN 201621469574U CN 206330187 U CN206330187 U CN 206330187U
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- spiral case
- hood
- blower
- frame
- range hood
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Abstract
A kind of single air-inlet range hood, including blower fan, blower hood and exhaust fume collecting hood, blower fan includes spiral case, and spiral case has spiral case front side board, spiral case back side panel and the spiral case annular wall between spiral case front side board and spiral case back side panel, advance air port is provided with spiral case front side board, it is characterised in that:Rear vents are provided with spiral case back side panel, deflector is provided between spiral case front side board and the rear side cover plate of blower hood, the noise reduction cavity being connected with rear vents is formed between deflector, spiral case and blower hood.The utility model has the advantage of:The range hood is set after deflector, good guide functions are served to the turbulent flow by oil cleaner screen, reduce the aerodynamic noise in the path, simultaneously, noise reduction cavity can eliminate the disorderly flow noise of small space interior air-flow on rear side of blower hood, noise is blocked by the path outwards propagated on rear side of blower hood, and is also used as in the case of the big resistance of common flue pressure release space, reducing the impact noise of air-flow resistance.
Description
Technical field
The utility model is related to a kind of range hood, more particularly, to a kind of single air-inlet range hood.
Background technology
At present, top-sucking kitchen ventilator generally includes blower fan, blower hood and the exhaust fume collecting hood below blower hood, wind
Machine includes spiral case, impeller and the motor for driving impeller.The air inlet of this top-sucking kitchen ventilator is located at the side of spiral case, i.e.,
Using single admission, thereby result in that incoming air area is small, oil extraction smoke is smaller.It is existing in order to overcome the defect of blower fan single side air intake
The disclosed range hood for having a both sides air inlet in technology, such as (Authorization Notice No. is CN to Patent No. 201110027636.1
Disclosed in Chinese invention patent 102072515A)《A kind of range hood with air-suction double-injection acceleration function》, the suction
Lampblack absorber, which has to be provided with spiral case, spiral case in cabinet and exhaust fume collecting hood, cabinet, is provided with impeller and motor, and spiral case is provided with advance air port
And rear air inlet, exhaust fume collecting hood smoke-collecting area initiating terminal to advance air port is with the first oil smoke passage, and exhaust fume collecting hood smoke-collecting area initiating terminal is extremely
Rear air inlet has the second oil smoke passage, and the bore of two oil smoke passages is tapered into, and is conducive to accelerating air-flow to rise, accelerates oil
Cigarette is sucked away, so as to improve smoke absorption effect.However, due to foring two oil smoke passages, oil smoke is from former and later two air inlets
Into in blower fan, and the noise of range hood is mainly derived from inside centrifugal blower, and thus centrifugal blower is during work
Can be by two air inlets toward the larger noise of external radiation.In summary, need to make into one the structure of existing range hood
Step is improved.
Utility model content
Technical problem to be solved in the utility model is can be to by filter there is provided one kind for the state of the art
The turbulent flow of oil network carries out water conservancy diversion and single air-inlet range hood of excellent noise reduction effect.
The utility model solve technical scheme that the technical problem used for:Single air-inlet range hood, including wind
Machine, blower hood and the exhaust fume collecting hood below blower hood, the blower fan include spiral case and the impeller in spiral case, institute
Stating spiral case has spiral case front side board, spiral case back side panel and the spiral case annular wall between spiral case front side board and spiral case back side panel,
Advance air port is provided with the spiral case front side board, it is characterised in that:It is provided with and fan outlet on the spiral case back side panel
The rear vents being connected, the rear vents are mutually obstructed with the advance air port by the mid-game of the impeller, in the snail
Deflector is provided between shell front side board and the rear side cover plate of blower hood, is enclosed between the deflector, spiral case and blower hood
Synthesize the noise reduction cavity being connected with the rear vents.
Preferably, the deflector is set obliquely from front to back, and the front side edge of deflector is arranged on front side of the spiral case
On plate, the back side edge of deflector is arranged on the exhaust fume collecting hood, in the lower section of the blower fan provided with filter from front to back obliquely
Oil smoke passage is formed between oil network, and the oil cleaner screen and deflector.Formed after oil smoke passage, led between deflector and oil cleaner screen
The oil smoke of rear lateral portion below range hood can smoothly be directed into the advance air port of blower fan by oiled-plate method.
In order to improve the noise reduction of range hood, mesh is provided with the spiral case annular wall, in spiral case annular wall
Periphery is enclosed with ring-type acoustical cotton.
In order to further improve the noise reduction of range hood, muffler is provided with inside the noise reduction cavity, and described disappear
Sound device is located at the back of the blower fan.
Muffler can have various structures, it is preferable that the muffler includes noise reduction support and acoustical cotton, the noise reduction branch
Frame includes interior peripheral frame and external surrounding frame, and the interior peripheral frame surrounds the muffler air inlet just to the rear vents, the interior peripheral frame
Side wall on be covered with and have the first bloop, separating between the interior peripheral frame and external surrounding frame has multiple silencing cavities, each described
Described acoustical cotton is filled with silencing cavity.
Further preferably, the external surrounding frame is square frame, and left plate, right plate and the mounting of roof plate of the external surrounding frame are described
Blower hood on, the second bloop being connected with the noise reduction cavity is provided with the base plate of the external surrounding frame.
As a kind of preferred scheme, the interior peripheral frame is round frame, and it is in spoke to be provided between the interior peripheral frame and external surrounding frame
The dividing plate of shape distribution, is provided around toroidal membrane in interior peripheral frame periphery so that described noise reduction between interior peripheral frame and external surrounding frame
Chamber is divided into internal layer silencing cavity and outer layer silencing cavity, and being covered with the toroidal membrane has the 3rd bloop.It is of course also possible to set
More than one piece of toroidal membrane is put, so that forming more than two layers of silencing cavity between interior peripheral frame and external surrounding frame.
As another preferred scheme, the interior peripheral frame is square frame, and demarcation strip is provided between interior peripheral frame and external surrounding frame
With the silencing cavity described in formation, the 4th bloop is provided with described demarcation strip.
Compared with prior art, the utility model has the advantage of:Single air-inlet range hood is in spiral case front side board and wind
Set between the rear side cover plate of machine outer cover after deflector, good guide functions are served to the turbulent flow by oil cleaner screen, reduced
The aerodynamic noise in the path, meanwhile, formed between deflector, spiral case and blower hood and be connected with blower fan rear side rear vents
After logical noise reduction cavity, the disorderly flow noise of small space interior air-flow on rear side of blower hood can be eliminated, blocks noise to pass through wind
The path outwards propagated on rear side of machine outer cover, also, pressure release space is also used as in the case of the big resistance of common flue, reduce
The impact noise of air-flow resistance.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the structure sectional view after range hood shown in Fig. 1 is installed on wall;
Fig. 3 is the structural representation of the blower fan of the utility model embodiment one;
Fig. 4 is the structural representation of the spiral case of the utility model embodiment one;
Fig. 5 is the structural representation of the utility model embodiment two;
Fig. 6 is the structure sectional view of range hood shown in Fig. 5;
Fig. 7 is the structural representation of the noise reduction support of the utility model embodiment two;
Fig. 8 is the structural representation of the utility model embodiment three;
Fig. 9 is the structure sectional view of range hood shown in Fig. 8;
Figure 10 is the structural representation of the noise reduction support of the utility model embodiment three.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment one:
As shown in Figures 1 to 4, single air-inlet range hood in the present embodiment includes blower fan 1, blower hood 2 and located at wind
The exhaust fume collecting hood 3 of the lower section of machine outer cover 2.Blower fan 1 includes spiral case 4 and the impeller 5 in spiral case 4, and spiral case 4 has spiral case front side board
41st, spiral case back side panel 42 and the spiral case annular wall 43 between spiral case front side board and spiral case back side panel, impeller 5 have mid-game
51.Direction shown in arrow A is backward using in Fig. 2, and blower hood 2 is arranged on wall 15, before being provided with spiral case front side board 41
Air inlet 411, is provided with rear vents 421 on spiral case back side panel 42, and advance air port 411 passes through mid-game 51 with rear vents 421
Mutually obstruct, and advance air port 411 and rear vents 421 are connected with fan outlet 6.
It is provided between spiral case front side board 41 and the rear side cover plate 21 of blower hood 2 in deflector 7, the present embodiment, water conservancy diversion
Plate 7 is set obliquely from front to back, and the front side edge of deflector 7 is arranged on spiral case front side board 41, and the back side edge of deflector 7 is installed
On exhaust fume collecting hood 3.Deflector 7 can play good guide functions to turbulent flow, lead along the gas by blower fan advance air port 411
Stream, it is to avoid air-flow is to the frontal impact of the bottom of spiral case 4, so as to reduce the aerodynamic noise in the path.
In the present embodiment, noise reduction cavity 8 is enclosed between deflector 7, spiral case 4 and blower hood 2, due to noise reduction cavity 8 with
Rear vents 421 are connected.When range hood works, air-flow from the front side portion of 411 intake impeller of advance air port 5 of blower fan, due to
Advance air port 411 is mutually obstructed with rear vents 421, therefore the air-flow can only flow out from fan outlet 6, also, public
In the case of the big resistance of flue, the air-flow at fan outlet 6 can countercurrently be back to the rear lateral portion of impeller 5, and and then pass through rear venting
Mouth 421 is back in noise reduction cavity 8.As can be seen here, set after noise reduction cavity 8, the noise reduction cavity 8 has blocked the air-flow of rear vents 421
Source, eliminates the disorderly flow noise of the rear side small space interior air-flow of blower hood 2, at the same can block noise by blower fan outside
The path that the rear side of cover 2 is outwards propagated, also, in the case of the big resistance of common flue, the noise reduction cavity 8 can also play pressure release work
With reversely floing back towards the flow noise that the air-flow in noise reduction cavity 8 causes and be blocked in noise reduction cavity 8.In addition, the range hood is in spiral case ring
Mesh 431 is provided with shape wall 43, and ring-type acoustical cotton 11 is enclosed with the periphery of spiral case annular wall 43.Ring-type acoustical cotton 11 can be inhaled
Fall the part flow noise in noise reduction cavity 8, so that on the premise of air quantity and blast is not lost, further reduction range hood is transported
Noise during row.
By experiment, though the noise reduction cavity 8 has blocked the rear side air intake passage of blower fan 1, to the air performance of range hood
Very little is influenceed, 2~3db of lower noise when can make the range hood normally run serves good decrease of noise functions.
The oil cleaner screen 12 of the range hood is located at the lower section of blower fan 1 provided with from front to back obliquely, and oil cleaner screen 12 is with leading
Oil smoke passage 13 is left between stream plate 7, so that the oil smoke of rear lateral portion below range hood can be smoothly directed into wind by oil guide plate 7
The advance air port 411 of machine 1.In addition, in order to improve rectification effect, the range hood is provided with and oil cleaner screen in the lower section of oil cleaner screen 12
12 generally parallel cowling panels 14.
Embodiment two:
As shown in Figures 5 to 7, single air-inlet range hood of the present embodiment is provided with muffler in noise reduction cavity 8, the noise reduction
Device is located at the back of blower fan 1.The muffler includes noise reduction support 9 and acoustical cotton 10, and noise reduction support 9 includes interior peripheral frame 91 and periphery
Frame 92.Wherein, interior peripheral frame 91 is round frame, and interior peripheral frame 91 surrounds the muffler air inlet 97 just to rear vents 421, interior peripheral frame 91
Side wall on be covered with and have the first bloop 911.External surrounding frame 92 is square frame, left plate, right plate and the mounting of roof plate of external surrounding frame 92
On blower hood 2, the second bloop 921 being connected with noise reduction cavity 8 is provided with the base plate of external surrounding frame 92, the second bloop
Aperture is 4mm, and pitch of holes is 8mm.
The dividing plate 93 in spoke-like distribution is provided between interior peripheral frame 91 and external surrounding frame 92, so that interior peripheral frame 91 and periphery
Separating between frame 92 has multiple silencing cavities 95, also, is not provided with perforate on dividing plate 93.Further, in interior peripheral frame 91 and periphery
The toroidal membrane 94 in interior peripheral frame periphery is provided around between frame 92, so that silencing cavity 95 is divided into the He of internal layer silencing cavity 951
Outer layer silencing cavity 952.In addition, being covered with toroidal membrane 94 has the 3rd bloop 941, in each internal layer silencing cavity 951 and outside
Layer silencing cavity 952 fills acoustical cotton 10.
In the present embodiment, the aperture of the first bloop 911 is 3mm, and pitch of holes is 6mm;The aperture of 3rd bloop 941 is
2.5mm, pitch of holes is 6mm.
When range hood works, first, the noise propagated from from blower fan rear vents 421 enters internal layer silencing cavity 951,
Absorbed by the acoustical cotton 10 in internal layer silencing cavity 951;Then, noise is by entering outer layer silencing cavity after internal layer silencing cavity 951
952, and absorbed by the acoustical cotton 10 in outer layer silencing cavity 952, finally only partial noise enters drop by outer layer silencing cavity 952
Make an uproar in chamber 8.So, by double-deck silencing cavity and the structure of acoustical cotton, noise has been effectively absorbed, good noise reduction effect is served
Really.
Embodiment three:
As shown in Fig. 8 to Figure 10, the noise reduction support in the noise reduction support and embodiment two of the muffler in the present embodiment is not
Together.In the present embodiment, the interior peripheral frame 91 of noise reduction support 9 is square frame, and demarcation strip is provided between interior peripheral frame 91 and external surrounding frame 92
96, so that being separated into multiple silencing cavities 95 between interior peripheral frame 91 and external surrounding frame 92.Disappear in addition, being provided with the 4th on demarcation strip 96
Sound hole 961, so that each silencing cavity 95 is interconnected, is filled with acoustical cotton 10 in each silencing cavity 95.In the present embodiment,
The aperture of second bloop 921 is 4mm, and pitch of holes is 8mm.
When range hood works, the noise propagated from from blower fan rear vents 421 enters in each silencing cavity 95, due to
Each silencing cavity 95 is interconnected, thus the acoustical cotton 10 in silencing cavity 95 can be absorbed into the noise in chamber repeatedly, from
And play good noise reduction.
It the foregoing is only preferred embodiment of the present utility model, it is noted that for those of ordinary skill in the art
For, under the premise of principle of the present utility model is not departed from, a variety of remodeling or improvement can be carried out to the utility model, these are equal
It is considered as within protection domain of the present utility model.
Claims (8)
1. a kind of single air-inlet range hood, including blower fan (1), blower hood (2) and the exhaust fume collecting hood below blower hood
(3), the blower fan (1) includes spiral case (4) and the impeller (5) in spiral case, and the spiral case (4) has spiral case front side board
(41), spiral case back side panel (42) and the spiral case annular wall (43) between spiral case front side board and spiral case back side panel, in the snail
Advance air port (411) is provided with shell front side board (41), it is characterised in that:It is provided with to go out with blower fan on the spiral case back side panel (42)
The rear vents (421) that air port (6) is connected, the rear vents (421) pass through the impeller with the advance air port (411)
(5) mid-game (51) is mutually obstructed, and is provided between the spiral case front side board (41) and the rear side cover plate (21) of blower hood (2)
Deflector (7), is enclosed and the rear vents (421) phase between the deflector (7), spiral case (4) and blower hood (2)
The noise reduction cavity (8) of connection.
2. single air-inlet range hood according to claim 1, it is characterised in that:The deflector (7) is oblique from front to back
Lower to set, the front side edge of deflector (7) is arranged on the spiral case front side board (41), and the back side edge of deflector (7) is arranged on institute
State on exhaust fume collecting hood (3), oil cleaner screen (12) from front to back obliquely, and the oil cleaner screen are provided with the lower section of the blower fan (1)
(12) oil smoke passage (13) is formed between deflector (7).
3. single air-inlet range hood according to claim 1, it is characterised in that:It is provided with the spiral case annular wall (43)
Mesh (431), ring-type acoustical cotton (11) is enclosed with the periphery of spiral case annular wall (43).
4. single air-inlet range hood according to any claim in claims 1 to 3, it is characterised in that:In the drop
Chamber (8) of making an uproar is internal to be provided with muffler, and the muffler is located at the back of the blower fan (1).
5. single air-inlet range hood according to claim 4, it is characterised in that:The muffler includes noise reduction support (9)
With acoustical cotton (10), the noise reduction support (9) includes interior peripheral frame (91) and external surrounding frame (92), and it is just right that the interior peripheral frame (91) surrounds
Being covered with the muffler air inlet (97) of the rear vents (421), the side wall of the interior peripheral frame (91) has the first bloop
(911), separating between the interior peripheral frame (91) and external surrounding frame (92) has multiple silencing cavities (95), in each described silencing cavity
(95) described acoustical cotton (10) is filled with.
6. single air-inlet range hood according to claim 5, it is characterised in that:The external surrounding frame (92) is square frame, described
Left plate, right plate and the mounting of roof plate of external surrounding frame (92) are on described blower hood (2), the base plate of the external surrounding frame (92)
On be provided with the second bloop (921) being connected with the noise reduction cavity (8).
7. single air-inlet range hood according to claim 6, it is characterised in that:The interior peripheral frame (91) is round frame, in institute
The dividing plate (93) being provided between interior peripheral frame (91) and external surrounding frame (92) in spoke-like distribution is stated, in interior peripheral frame (91) and external surrounding frame
(92) toroidal membrane (94) in interior peripheral frame periphery is provided around between so that described silencing cavity (95) is divided into internal layer noise reduction
Chamber (951) and outer layer silencing cavity (952), being covered with the toroidal membrane (94) has the 3rd bloop (941).
8. single air-inlet range hood according to claim 6, it is characterised in that:The interior peripheral frame (91) is square frame, inside
Demarcation strip (96) is provided between peripheral frame (91) and external surrounding frame (92) to form described silencing cavity (95), in described demarcation strip
(96) the 4th bloop (961) is provided with.
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CN201621469574.4U CN206330187U (en) | 2016-12-29 | 2016-12-29 | A kind of single air-inlet range hood |
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CN201621469574.4U CN206330187U (en) | 2016-12-29 | 2016-12-29 | A kind of single air-inlet range hood |
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CN107975853A (en) * | 2018-01-11 | 2018-05-01 | 山东小鸭集团小家电有限公司 | A kind of low noise self-cleaning type range hood |
CN108240643A (en) * | 2016-12-23 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of air purification type range hood and application have the kitchen of the range hood |
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CN107975853A (en) * | 2018-01-11 | 2018-05-01 | 山东小鸭集团小家电有限公司 | A kind of low noise self-cleaning type range hood |
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CN110094367A (en) * | 2018-01-31 | 2019-08-06 | 宁波方太厨具有限公司 | A kind of denoising structure of blower deflector |
CN110274275B (en) * | 2018-03-13 | 2024-02-20 | 宁波方太厨具有限公司 | Noise-reducing type range hood |
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CN110274273B (en) * | 2018-03-13 | 2024-02-20 | 宁波方太厨具有限公司 | Noise-reducing type range hood |
CN110296446A (en) * | 2018-03-23 | 2019-10-01 | 宁波方太厨具有限公司 | Range hood oil guide structure |
CN110296446B (en) * | 2018-03-23 | 2024-05-14 | 宁波方太厨具有限公司 | Oil guiding structure of range hood |
CN108413464A (en) * | 2018-05-31 | 2018-08-17 | 广东美的厨房电器制造有限公司 | Range hood |
CN108413464B (en) * | 2018-05-31 | 2024-05-28 | 广东美的厨房电器制造有限公司 | Fume exhaust fan |
CN111174260B (en) * | 2020-02-27 | 2022-02-08 | 宁波方太厨具有限公司 | Fume exhaust fan |
CN111174260A (en) * | 2020-02-27 | 2020-05-19 | 宁波方太厨具有限公司 | Fume exhaust fan |
WO2023273453A1 (en) * | 2021-06-29 | 2023-01-05 | 佛山市顺德区美的洗涤电器制造有限公司 | Fan assembly and household appliance |
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