CN202690542U - Noise reduction collector ring and range hood using the same - Google Patents
Noise reduction collector ring and range hood using the same Download PDFInfo
- Publication number
- CN202690542U CN202690542U CN 201220323061 CN201220323061U CN202690542U CN 202690542 U CN202690542 U CN 202690542U CN 201220323061 CN201220323061 CN 201220323061 CN 201220323061 U CN201220323061 U CN 201220323061U CN 202690542 U CN202690542 U CN 202690542U
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- spiral case
- noise reduction
- face
- circle
- inner ring
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Abstract
The utility model discloses a noise reduction collector ring, the collector ring is arranged at the position of an air inlet of a volute shell of a range hood and comprises an outer ring, wherein the outer ring comprises an air guiding surface and an outer ring fixing surface. The air guiding surface is extended from the air inlet to the inner side of the volute shell, and the outer ring fixing surface is arranged at the circumferential direction outside of the air guiding surface and fixed with the volute shell. The noise reduction collector ring is characterized in that the noise reduction collector ring further comprises an inner ring which is arranged at the inner side of the outer ring, wherein the inner ring comprises an isolation surface and an inner ring fixing surface. The isolation surface is matched with the air guiding surface and used for cutting off a turbulent flow area in the volute shell, and the inner ring fixing surface is arranged at the circumferential direction outside of the isolation surface and used for fixing with the volute shell. The utility model further discloses a range hood using the noise reduction collector ring. The inner ring is added to the collector ring, and the isolation surface is arranged on the inner ring and used for cutting off the turbulent flow area, so that the forming of the turbulent flow area in the volute shell can be cut off, and air motion in the volute shell is improved. Through holes and blind holes are densely arranged on the isolation surface, so that after turbulent flow enters a hollow cavity, sound energy can be consumed by being repeatedly reflected or being rubbed inside the blind holes. Compared with a collector ring with only one layer of free-of noise reduction structure, noise reduction of the range hood can be 1.0 to 1.5 decibel.
Description
Technical field
The utility model relates to a kind of afflux circle, especially a kind of noise reduction afflux circle, and the kitchen ventilator that uses this noise reduction afflux circle.
Background technique
Household cooker hood utilizes centrifugal blower to realize extracting oil laden air out kitchen and being discharged into common flue or directly discharging outdoor, because the working environment wave range is too large, simultaneously NBS to the sign of noise only at laboratory environment, therefore kitchen ventilator often designs according to laboratory environment when designing with centrifugal blower, use afflux circle energy Effective Raise centrifugal blower performance, at this moment the centrifugal blower flow is larger, is operated under the design conditions condition, and level of noise is lower.
Afflux circle commonly used adopts steel plate punched to form, and is arranged on the intake grill place of spiral case.And after kitchen ventilator is installed on user environment, day by day abominable along with conditions of discharge, the working flow of centrifugal blower diminishes, and at this moment noise can obviously raise, and affect user's experience.Referring to Fig. 1, it is exactly reducing along with the blower fan working flow that noise becomes one of them large reason, after air-flow enters from afflux circle 1 ' front (airflow direction as shown by arrows), form a turbulent area 2 ' at afflux circle 1 ' inboard (side in spiral case), after turbulent flow is exaggerated and flow in the spiral case, then can greatly increase the noise of kitchen ventilator.
The model utility content
First technical problem to be solved in the utility model provides a kind of Air Flow in the spiral case that improves, and reduces the kitchen ventilator noise reduction afflux circle of kitchen ventilator noise.
Second technical problem to be solved in the utility model provides a kind of kitchen ventilator that uses above-mentioned afflux circle.
The technological scheme that above-mentioned first technical problem that solves the utility model adopts is: a kind of noise reduction afflux circle, described afflux circle is arranged on the intake grill place of the spiral case of kitchen ventilator, described afflux circle comprises the outer ring, described outer ring comprises the wind-guiding face that is extended in the described spiral case by described intake grill place and is positioned at and described wind-guiding face week is used for laterally the outer ring stationary plane fixing with described spiral case, it is characterized in that, also comprise the inner ring that is positioned at inboard, described outer ring, described inner ring comprises the isolation surface of turbulent area in the described spiral case of blocking-up that cooperates with described wind-guiding face and is positioned at and described isolation surface week is used for laterally the inner ring stationary plane fixing with described spiral case.
According to an aspect of the present utility model, the circumferential inner end of described isolation surface and the circumferential inner end of described wind-guiding face are fixed, the outer side surface at described inner ring stationary plane and described intake grill place is fixed, described outer ring stationary plane is fixed on the described inner ring stationary plane outside, forms cavity between described inner ring and the outer ring.
Described isolation surface comprises blocking-up face, and the upper end of described blocking-up face upwards is bent to form vertical plane, and the upper end of described vertical plane bends outside spiral case and fixes with the circumferential inner end of described wind-guiding face; The lower end of described blocking-up face is bent to form horizontal plane and fixes with the cylindrical form interior surface at described intake grill place; Described inner ring stationary plane from described horizontal plane end to downward-extension.
Described spiral case is provided with impeller, described impeller has front circle, the lower end of described vertical plane is lower than the circumferential inner side edge edge of described Qian Quan corresponding part or flushes with described circumferential inner side edge edge, both can stop that air-flow that the air-flow that enters from the intake grill place of spiral case and the Qian Quan front side of impeller produce because of vane rotary mixes forms turbulent flow, same can stop also before the front circle that the air-flow of sideway swivel generation leaves this zone and mixes the formation turbulent flow with the air-flow that enters from intake grill.
The described blocking-up face through hole that gathers, the turbulent flow that is blocked enters in the cavity from through hole, through the Multi reflection sound energy consumption, can strengthen anti-acoustic capability thus in cavity inner wall.
Preferably, the cambered surface that described blocking-up face protrudes for the inclined-plane that tilts in described spiral case, towards described spiral case or towards described spiral case outside the cambered surface of protrusion, can have the effect of blocking preferably turbulent flow.
According to another aspect of the present utility model, described outer ring and inner ring are one-body molded, are solid between described outer ring and the inner ring.
Described isolation surface comprises blocking-up face, and the upper end of described blocking-up face upwards is bent to form vertical plane, and described vertical plane extends upward until arrive described wind-guiding face; The lower end of described blocking-up face is bent to form horizontal plane and fixes with the cylindrical form interior surface at described intake grill place; Described inner ring stationary plane is integral to downward-extension and with described outer ring stationary plane from described horizontal plane end.
Described spiral case is provided with impeller, described impeller has front circle, the lower end of described vertical plane is lower than the circumferential inner side edge edge of described Qian Quan corresponding part or flushes with described circumferential inner side edge edge, both can stop that air-flow that the air-flow that enters from the intake grill place of spiral case and the Qian Quan front side of impeller produce because of vane rotary mixes forms turbulent flow, same can stop also before the front circle that the air-flow of sideway swivel generation leaves this zone and mixes the formation turbulent flow with the air-flow that enters from intake grill.
The described blocking-up face blind hole of gathering, and the turbulent flow that is blocked enters in the blind hole, the sound energy consumption that rubs in blind hole also can strengthen anti-acoustic capability.
Preferably, the cambered surface that described blocking-up face protrudes for the inclined-plane that tilts in described spiral case, towards described spiral case or towards described spiral case outside the cambered surface of protrusion, can have the effect of blocking preferably turbulent flow.
The technological scheme that above-mentioned second technical problem that solve the utility model adopts is, a kind of kitchen ventilator, comprise exhaust fume collecting hood, be arranged on the spiral case of described exhaust fume collecting hood top, be provided with impeller in the described spiral case, it is characterized in that the intake grill place of described spiral case arranges the above-mentioned afflux circle coaxial with described impeller.
Compared with prior art, the utility model has the advantage of: on the basis of existing afflux circle, increase an inner ring, isolation surface with blocking-up turbulent area, cooperate with the wind-guiding face of outer ring, can block in spiral case, forming turbulent area, improve the Air Flow in the spiral case, form cavity between inner ring and outer ring are can two-part fixing, be solid between also can be one-body molded; In the densely covered through hole of isolation surface or blind hole, so that turbulent flow enters in the cavity through Multi reflection sound energy consumption or the sound energy consumption that rubs in blind hole; Relatively only have one deck without the afflux circle of denoising structure, used the kitchen ventilator of afflux circle of the present utility model can reduce noise 1.0 ~ 1.5dB.
Description of drawings
Fig. 1 is the schematic representation of the afflux circle of prior art;
Fig. 2 is the schematic representation of kitchen ventilator of the present utility model;
Fig. 3 is the schematic representation of afflux circle of the present utility model;
Fig. 4 is the decomposition texture schematic representation of afflux circle of the present utility model;
Fig. 5 is spiral case sectional view of the present utility model;
Fig. 6 is the local enlarged diagram of Fig. 5.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
Referring to Fig. 2, a kind of kitchen ventilator comprises exhaust fume collecting hood 1, is arranged on the spiral case 2 of exhaust fume collecting hood 1 top, is provided with impeller 21 in the spiral case 2, and impeller 21 has front circle 211 and rear circle 212, is fixed with blade 213 between front circle 211 and the rear circle 212; Intake grill 22 places of spiral case 2 front sides are provided with the afflux circle 3 coaxial with impeller 21, and spiral case 2 rear sides are fixed with blower fan 23.When 21 rotation of blower fan 23 impeller, air in the spiral case 2 is discharged from outside the spiral case 2, in the spiral case 2 inner negative pressure that form, oil smoke enter by afflux circle 3 from exhaust fume collecting hood 1 under the effect of negative pressure spiral case 2 interior after, under the effect of blower fan 23 and impeller 21, be discharged to common flue or discharge outdoor, carry secretly oil smoke air-flow direction as shown by arrows.
Referring to Fig. 3-Fig. 6, afflux circle 3 comprises inner ring 31 and outer ring 32, and inner ring 31 overlaps with outer ring 32, and wherein, inner ring 31 is near spiral case 2 inboards, and outer ring 32 is away from spiral case 2 inboards.Outer ring 32 comprises the wind-guiding face 321 to spiral case 2 interior extensions by intake grill 22 places of spiral case 2, and is positioned at and 321 weeks of wind-guiding face is used for laterally the outer ring stationary plane 322 fixing with intake grill 22 places of spiral case 2.Inner ring 31 comprises the isolation surface 311 that cooperates with the wind-guiding face 321 of outer ring 32, and be positioned at and 311 weeks of isolation surface be used for laterally the inner ring stationary plane 312 fixing with intake grill 22 places of spiral case 2, in the present embodiment, isolation surface 311 comprises blocking-up face 3111, blocking-up face 311 can be for towards the inclined-plane of spiral case 2 interior inclinations, also can be for towards the projecting inward cambered surface of spiral case 2 or towards the cambered surface of spiral case 2 outer protrusions; The upper end of blocking-up face 3111 upwards is bent to form vertical plane 3112, preferably, the lower end of vertical plane 3112 be lower than impeller 21 front circle 211 corresponding parts circumferential inner side edge along or with this inner side edge along flushing, both can stop that air-flow that the air-flow that enters from intake grill 22 places of spiral case 2 and front circle 211 front sides of impeller 21 produce because of impeller 21 rotations mixes forms turbulent flow, and the same air-flow that also can stop front circle 211 front sideway swivels generations leaves this zone and mixes the formation turbulent flow with the air-flow that enters from intake grill 22; Thereby the direction bending of the upper end of vertical plane 3112 outside spiral case 2 fixed with the circumferential inner end of wind-guiding face 321; The lower end of blocking-up face 3111 is bent to form horizontal plane 3113, thereby fixing with the cylindrical form interior surface 221 at intake grill 22 places, inner ring stationary plane 312 from the end of horizontal plane 3113 to downward-extension, fixing with the outer side surface 222 that intake grill 22 places are vertical, and outer ring stationary plane 322 is fixed on inner ring stationary plane 312 outsides, thus, formed cavity 4 between isolation surface 311 and the wind-guiding face 321.
Thus, when air-flow enters from intake grill 22, the former turbulent flow of front circle 211 end faces and afflux circle 3 inboards (side in spiral case 2) that should be formed on is by isolation surface 311 isolation of inner ring 31, blocking-up is at spiral case 2 interior formation turbulent areas, can improve thus the Air Flow situation in the spiral case 2, reach the purpose of noise reduction.
In order further to strengthen the effect of noise reduction, the micropore that gathers on the blocking-up face 3111, in the present embodiment, micropore is through hole 313, through hole 313 can be the shape such as circular, oval or square.The turbulent flow that is blocked enters in the cavity 4 from through hole 313, through the Multi reflection sound energy consumption, can strengthen anti-acoustic capability thus in cavity 4 inwalls.
In another embodiment of the present utility model, itself and embodiment's 1 difference inner ring 31 and outer ring 32 are one-body molded, be solid between inner ring 31 and the outer ring 32, the vertical plane 3112 of isolation surface 311 extends upward until to wind-guiding face 321, inner ring stationary plane 312 and outer ring stationary plane 322 are integral, at this moment, the micropore that gathers on the blocking-up face 3111 of the isolation surface 311 of inner ring 31 is blind hole, when air-flow enters from intake grill 22, isolation surface 311 blocking-up are at spiral case 2 interior formation turbulent areas, and the turbulent flow that is blocked enters in the blind hole, and the sound energy consumption that rubs in blind hole also can strengthen anti-acoustic capability.
The above only is preferred implementation of the present utility model; should be pointed out that for the ordinary skill in the art, do not breaking away under the principle prerequisite of the present utility model; can also make various deformation and improvement, this also should be considered as protection domain of the present utility model.
Claims (12)
1. noise reduction afflux circle, described afflux circle is arranged on the intake grill (22) of the spiral case (2) of kitchen ventilator and locates, described afflux circle comprises outer ring (32), described outer ring (32) comprises by described intake grill (22) to be located the wind-guiding face (321) that extends and is positioned at described wind-guiding face (32) week to be used for laterally the outer ring stationary plane (322) fixing with described spiral case (2) in described spiral case (2), it is characterized in that, comprise also being positioned at the inboard inner ring (31) in described outer ring (32) that described inner ring (31) comprises the isolation surface (311) of interior the turbulent area of the described spiral case of blocking-up (2) that cooperates with described wind-guiding face (321) and is positioned at described isolation surface (311) week laterally for the inner ring stationary plane (312) of fixing with described spiral case (2).
2. noise reduction afflux circle as claimed in claim 1, it is characterized in that, the circumferential inner end of described isolation surface (311) and described wind-guiding face (321) circumferentially inner end are fixed, described inner ring stationary plane (312) is fixing with the outer side surface (222) that described intake grill (22) is located, described outer ring stationary plane (322) is fixed on described inner ring stationary plane (312) outside, forms cavity (4) between described inner ring (31) and outer ring (32).
3. noise reduction afflux circle as claimed in claim 2, it is characterized in that, described isolation surface (311) comprises blocking-up face (3111), the upper end of described blocking-up face (3111) upwards is bent to form vertical plane (3112), and the upper end of described vertical plane (3112) bends outside spiral case (2) and fixes with the circumferential inner end of described wind-guiding face (321); The lower end of described blocking-up face (3111) is bent to form horizontal plane (3113) and fixes with the cylindrical form interior surface (221) that described intake grill (22) is located; Described inner ring stationary plane (312) is terminal to downward-extension from described horizontal plane (3113).
4. noise reduction afflux circle as claimed in claim 3, it is characterized in that, described spiral case (2) is provided with impeller (21), described impeller (21) has front circle (211), and the lower end of described vertical plane (3112) is lower than the circumferential inner side edge edge of described front circle (211) corresponding part or flushes with described circumferential inner side edge edge.
5. noise reduction afflux circle as claimed in claim 3 is characterized in that, described blocking-up face (3111) through hole (313) that gathers.
6. such as each described noise reduction afflux circle among the claim 3-5, it is characterized in that the cambered surface that described blocking-up face (3111) is the inclined-plane that tilts, protrude towards described spiral case (2) or the cambered surface of protrusion towards described spiral case (2) outside in described spiral case (2).
7. noise reduction afflux circle as claimed in claim 1 is characterized in that, described outer ring (32) and inner ring (31) are one-body molded, is solid between described outer ring (32) and the inner ring (31).
8. noise reduction afflux circle as claimed in claim 7, it is characterized in that, described isolation surface (311) comprises blocking-up face (3111), the upper end of described blocking-up face (3111) upwards is bent to form vertical plane (3112), and described vertical plane (3112) extends upward until arrive described wind-guiding face (321); The lower end of described blocking-up face (3111) is bent to form horizontal plane (3113) and fixes with the cylindrical form interior surface (221) that described intake grill (22) is located; Described inner ring stationary plane (312) is integral to downward-extension and with described outer ring stationary plane (322) from described horizontal plane (3113) end.
9. noise reduction afflux circle as claimed in claim 8, it is characterized in that, described spiral case (2) is provided with impeller (21), described impeller (21) has front circle (211), and the lower end of described vertical plane (3112) is lower than the circumferential inner side edge edge of described front circle (211) corresponding part or flushes with described circumferential inner side edge edge.
10. noise reduction afflux circle as claimed in claim 8 is characterized in that, described blocking-up face (3111) blind hole of gathering.
11. such as each described noise reduction afflux circle among the claim 8-10, it is characterized in that the cambered surface that described blocking-up face (3111) is the inclined-plane that tilts, protrude towards described spiral case (2) or the cambered surface of protrusion towards described spiral case (2) outside in described spiral case (2).
12. kitchen ventilator, comprise exhaust fume collecting hood (1), be arranged on the spiral case (2) of described exhaust fume collecting hood (1) top, be provided with impeller (21) in the described spiral case (2), it is characterized in that, the intake grill (22) of described spiral case (2) locate to arrange with described impeller (21) coaxial such as each described afflux circle (3) among the claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323061 CN202690542U (en) | 2012-07-04 | 2012-07-04 | Noise reduction collector ring and range hood using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323061 CN202690542U (en) | 2012-07-04 | 2012-07-04 | Noise reduction collector ring and range hood using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690542U true CN202690542U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220323061 Withdrawn - After Issue CN202690542U (en) | 2012-07-04 | 2012-07-04 | Noise reduction collector ring and range hood using the same |
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| Country | Link |
|---|---|
| CN (1) | CN202690542U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767541A (en) * | 2012-07-04 | 2012-11-07 | 宁波方太厨具有限公司 | Noise reducing flow concentration ring and range hood employing same |
| CN103982469A (en) * | 2014-05-21 | 2014-08-13 | 西安交通大学 | Noise reduction fan volute for range hood |
| CN104633735B (en) * | 2013-11-08 | 2017-02-08 | 樱花卫厨（中国）股份有限公司 | Oil-accumulation-free air guiding structure of range hood |
| CN107956746A (en) * | 2017-10-20 | 2018-04-24 | 珠海格力电器股份有限公司 | Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system |
| CN110594197A (en) * | 2019-09-17 | 2019-12-20 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal fan and range hood |
| CN111472996A (en) * | 2020-05-11 | 2020-07-31 | 佛山市顺德区美的洗涤电器制造有限公司 | Fan subassembly and integrated kitchen appliance |
-
2012
- 2012-07-04 CN CN 201220323061 patent/CN202690542U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767541A (en) * | 2012-07-04 | 2012-11-07 | 宁波方太厨具有限公司 | Noise reducing flow concentration ring and range hood employing same |
| CN102767541B (en) * | 2012-07-04 | 2015-10-28 | 宁波方太厨具有限公司 | A kind of noise reduction afflux circle and use the kitchen ventilator of this afflux circle |
| CN104633735B (en) * | 2013-11-08 | 2017-02-08 | 樱花卫厨（中国）股份有限公司 | Oil-accumulation-free air guiding structure of range hood |
| CN103982469A (en) * | 2014-05-21 | 2014-08-13 | 西安交通大学 | Noise reduction fan volute for range hood |
| CN107956746A (en) * | 2017-10-20 | 2018-04-24 | 珠海格力电器股份有限公司 | Noise reduction current collector for centrifugal fan, centrifugal fan and air conditioning system |
| CN110594197A (en) * | 2019-09-17 | 2019-12-20 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal fan and range hood |
| CN110594197B (en) * | 2019-09-17 | 2021-08-31 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal fan and range hood |
| CN111472996A (en) * | 2020-05-11 | 2020-07-31 | 佛山市顺德区美的洗涤电器制造有限公司 | Fan subassembly and integrated kitchen appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130123 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |