CN201925993U - Range hood with current-stabilization noise-reduction structure - Google Patents
Range hood with current-stabilization noise-reduction structure Download PDFInfo
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- CN201925993U CN201925993U CN2011200089534U CN201120008953U CN201925993U CN 201925993 U CN201925993 U CN 201925993U CN 2011200089534 U CN2011200089534 U CN 2011200089534U CN 201120008953 U CN201120008953 U CN 201120008953U CN 201925993 U CN201925993 U CN 201925993U
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- spiral case
- casing
- air inlet
- kuppe
- lampblack absorber
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Abstract
The utility model relates to a range hood with a current-stabilization noise-reduction structure, comprising an enclosure (1) with an air inlet (11) and an air outlet (12), a volute casing (2) with a front air inlet (21) is arranged in the enclosure (1), an impeller (4) driven by a motor (3) to rotate is arranged in the volute casing (2). The range hood is characterized in that: a guiding cover (6) which guides flue gas to the front air inlet of the volute casing from the air inlet of the enclosure is fixed on a front cover plate of the volute casing, and a front flue gas guiding channel (7) with gradually-reduced caliber from top to bottom is formed between the guiding cover and the front end surface of the volute casing. The front flue gas guiding channel with gradually-reduced caliber from top to bottom is beneficial to accelerating ascending of air flows, so that the loss of vortex and gas inside the front flue gas guiding channel is reduced, the corresponding air quantity is increased, the oily fume can be accelerated to be sucked away, the oily fume suction effect can be improved; moreover, the air inlet direction can be controlled by the guiding cover, so that chaotic air flows can be changed into directional air flows to enter into the hood, the turbulence generating condition is reduced and the noise of the range hood is reduced.
Description
Technical field
The utility model belongs to the technical field of range hood, specifically a kind of lampblack absorber with current stabilization denoising structure.
Background technology
With the lampblack absorber of centrifugal blower so that its relative suction is big, noise is lower and can be well received need not in period than long running to clean.The existing range hood of centrifugal blower that adopts generally comprises the casing with air inlet and air outlet, the air inlet place of casing is equipped with exhaust fume collecting hood, the oil cleaner screen shade assembly is installed on the exhaust fume collecting hood, spiral case is installed in the casing, air inlet and rear air inlet before the front/rear end of spiral case is formed with, the upper surface of spiral case has the last air outlet that communicates with the air outlet of casing, multiple wing type centrifugal impeller by the motor-driven rotation is installed in the spiral case, form the front end fume inlet passage between the preceding air inlet of spiral case and the air inlet of casing, effect by blower fan, thereby form when the gas in the body is discharged in the oil smoke suction body of negative pressure with the outside, realize the purpose of oil suction cigarette.
The size of noise is to estimate an important indicator of lampblack absorber quality, and the noise source of lampblack absorber is substantially from rotational noise and two parts of turbulence noise of impeller.Because the turbulence noise of lampblack absorber directly results from centrifugal blower, it is mainly derived from the air intake at centrifuge air inlet place.The area of section of existing front end oil smoke passage all immobilizes, like this along with the rising of oil smoke, the oil smoke flowing velocity speed can occur and change in front end oil smoke passage, the situation that back segment oil smoke flowing velocity is slower than leading portion oil smoke flowing velocity particularly may appear, thereby make parameters such as blast, windage the inspiration of oil smoke and the variation of discharge occur being unfavorable for, so existing lampblack absorber mist extractor effect is still waiting to improve, oil smoke in front end oil smoke passage flows disorderly and unsystematic simultaneously, increase the condition that turbulent flow produces, the noise of lampblack absorber is bigger.
The utility model content
Technical problem to be solved in the utility model is that a kind of lampblack absorber with current stabilization denoising structure that can effectively reduce the lampblack absorber noise and strengthen lampblack absorber smoking effect is provided at above-mentioned prior art present situation, this lampblack absorber enters in the interior process of spiral case air-flow, and inner vortex and windage loss reduce.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of lampblack absorber with current stabilization denoising structure, comprise casing with air inlet and air outlet, spiral case with preceding air inlet is installed in the casing, impeller by the motor-driven rotation is installed in the spiral case, it is characterized in that: be fixed with on the front shroud of described spiral case the kuppe of flue gas, form the bore edge leading cigarette channel that diminishes gradually of direction from top to bottom between the front end face of kuppe and spiral case from the preceding air inlet of the air inlet of casing guiding spiral case.
The last inwall of above-mentioned kuppe is the curved surface that seamlessly transits.The kuppe inwall can make flue gas steadily by leading cigarette channel to the obstruction minimum of flue gas like this, further reduces flue gas produces turbulent flow in leading cigarette channel condition, and strengthens lampblack absorber smoking effect.
The edge, inside of above-mentioned kuppe has the connecting wall that turns up, and the front shroud of this connecting wall and spiral case is fitted and is screwed on the front shroud of spiral case.It can be easy for installation and maintenance with kuppe detachably to be fixed on the front shroud of spiral case, also can directly kuppe be weldingly fixed on the front shroud of spiral case certainly.
Also have rear air inlet on the above-mentioned spiral case, form between the inwall at the rear wall of spiral case and casing rear portion be communicated with the air inlet of casing after lead cigarette channel.So just, can improve the air intake effect of lampblack absorber from the front and back air intake of shell.
Be connected with downward protrusion between the lower limb of the lower limb of the front shroud of above-mentioned spiral case and the back shroud of spiral case and be the wind deflector of curved surface, certainly this wind deflector place then begin to be separated into aforesaid leading cigarette channel and after lead cigarette channel.The effect that wind deflector not only plays the shunting flue gas is set, also has effects such as drainage, noise reduction simultaneously, make air-flow more steady.The concrete structure of wind deflector and be provided with situation can with reference to but be not limited to the ZL200710069947.8 of Chinese patent formerly that the applicant has.
Improve further, be formed with the enclosed cavity of blocking with the air inlet of casing in the said machine casing, this enclosed cavity is positioned at the outside of kuppe, and the wall portion of kuppe has a plurality of tiny perforation that communicate with annular seal space.Kuppe and enclosed cavity with tiny perforation constitute the helmholtz resonance chamber, play the noise reduction effect, its sound absorption principle is that it is by the resonance effect, to pass through the friction and the damping of the hole wall of aperture through the acoustic energy of tiny perforation, make quite a few acoustic energy change heat energy into and consume, therefore the broadband noise that lampblack absorber is produced has good noise reduction, and because perforation is pore, so under the getter action of impeller, flue gas can not have only sound wave energy by tiny perforation from tiny perforation by entering in the enclosed cavity.
Be filled with sound-absorbing material in the above-mentioned enclosure space.Can further reduce the noise of lampblack absorber like this, and sound-absorbing material is positioned at enclosure space, flue gas can not enter, and installs in enclosure space like this that effective sound-absorbing material can absorb sound and can be by smoke pollution.
The lower edges of above-mentioned kuppe and the inwall of casing are close to, the front shroud of described spiral case forms described enclosed cavity towards the left and right sides inwall of casing and upward inwall extension and applying respectively between the inwall of the outer wall of described kuppe and casing front portion and the front shroud of spiral case.It is the inwall of the front shroud of spiral case as enclosed cavity that this enclosed cavity structure makes full use of casing inner wall, simplified structure, certain enclosed cavity that the outside that is positioned at kuppe also can directly be set in casing.
Compared with prior art, advantage of the present utility model is: when impeller is worked, air-flow enters in the spiral case behind the leading cigarette channel that direction diminishes gradually from top to bottom through bore, helping quickening air-flow rises, and the whirlpool of leading cigarette channel inside and gas loss are reduced, its corresponding air quantity obtains increasing, and quickens oil smoke and is sucked away, and improves oil suction cigarette effect; Kuppe can be controlled the direction of air intake simultaneously, makes rambling air-flow, and the direction that become is coherent to enter, and has reduced the condition of turbulent generation, thereby reduces the noise of lampblack absorber.
Description of drawings
Fig. 1 is the perspective view of the utility model embodiment;
Fig. 2 faces perspective view (removing the antetheca of exhaust fume collecting hood and casing) under the state for the utility model embodiment;
Fig. 3 looks up perspective view (removing exhaust fume collecting hood) under the state for the utility model embodiment;
Fig. 4 is the stereochemical structure cutaway view of the utility model embodiment;
Fig. 5 is the perspective view of kuppe among the utility model embodiment.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1～5, be a preferred embodiment of the present utility model.
A kind of lampblack absorber with current stabilization denoising structure, comprise casing 1 with air inlet 11 and air outlet 12, air inlet 11 places of casing 1 are equipped with exhaust fume collecting hood 10, spiral case 2 with preceding air inlet 21 and rear air inlet 22 is installed in the casing 1, be connected with air-out passage 9 in the outlet of the oil smoke at spiral case 2 tops with air outlet 12 conductings of casing, the impeller 4 that is driven rotation by motor 3 is installed in the spiral case 2, impeller 4 is the multiple wing type centrifugal impeller, form between the inwall at the back shroud of spiral case 2 and casing 1 rear portion be communicated with the air inlet 11 of casing after lead cigarette channel 5.It more than is the conventional design of lampblack absorber.
Be fixed with on the front end face of spiral case 2 kuppe 6 of flue gas from the preceding air inlet 21 of the air inlet 11 direct guiding spiral cases of casing, the last inwall 64 of kuppe 6 is arc line type, the edge, inside of kuppe 6 has the connecting wall 62 that turns up, this connecting wall 62 is fitted with the front end face of spiral case 2 and is screwed on the front end face of spiral case 2, the wall portion of kuppe 6 has a plurality of tiny perforation 63, form leading cigarette channel 7 between the front end face of kuppe 6 and spiral case 2, the bore of this leading cigarette channel 7 diminishes gradually along direction from top to bottom, and the flue gas by preceding air inlet 21 is all via leading cigarette channel 7.
Be formed with the enclosed cavity of blocking with the air inlet 11 of casing 8 in the casing 1, this enclosed cavity 8 is positioned at the outside of kuppe 6, and the lower edges 61 of kuppe 6 is close to the inwall of casing 1, promptly forms the enclosed cavity of blocking with the air inlet 11 of casing 8 between the front shroud of the inwall of the outer wall of kuppe 6 and casing 1 front portion and spiral case 2.The lower edges 61 of kuppe 6 is close to the inwall of casing 1, the front shroud of described spiral case forms described enclosed cavity 8 towards the left and right sides inwall of casing and upward inwall extension and applying respectively between the inwall of the outer wall of kuppe 6 and casing 1 front portion and the front shroud of spiral case 2.
Be connected with downward protrusion and curved wind deflector 23 between the lower limb of the back shroud of the lower limb of the front shroud of spiral case 2 and spiral case 2, this wind deflector 23 is as the base plate of spiral case 2, certainly these wind deflector 23 places then begin to be separated into aforesaid leading cigarette channel 5 and after lead cigarette channel 7.
Certainly, we also can be filled with sound-absorbing material in enclosed cavity 8, and sound-absorbing material does not show in drawing.
When impeller 4 work, air-flow enters in the spiral case 2 behind the leading cigarette channel 7 that direction diminishes gradually from top to bottom through bore, helping quickening air-flow rises, and the whirlpool of leading cigarette channel 7 inside and gas loss are reduced, its corresponding air quantity obtains increasing, the acceleration oil smoke is sucked away, and improves oil suction cigarette effect; Kuppe 6 can be controlled the direction of air intake, makes rambling air-flow, and the direction that become is coherent to enter, and has reduced the condition of turbulent generation, thereby reduces the noise of lampblack absorber.Simultaneously, kuppe 6 with tiny perforation 63 constitutes the helmholtz resonance chamber with described enclosed cavity 8, play the noise reduction effect, its sound absorption principle is that it is by the resonance effect, will be through friction and the damping of the acoustic energy of tiny perforation 63 by the hole wall of tiny perforation 63, make quite a few acoustic energy change heat energy into and consume, therefore the broadband noise that lampblack absorber is produced has good noise reduction.
Claims (8)
1. lampblack absorber with current stabilization denoising structure, the casing (1) that comprises have air inlet (11) and air outlet (12), spiral case (2) with preceding air inlet (21) is installed in the casing (1), the impeller (4) that is driven rotation by motor (3) is installed in the spiral case (2), it is characterized in that: be fixed with on the front shroud of described spiral case (2) the kuppe (6) of flue gas, form the bore edge leading cigarette channel (7) that diminishes gradually of direction from top to bottom between the front end face of kuppe (6) and spiral case (2) from the preceding air inlet (21) of the air inlet (11) of casing guiding spiral case.
2. the lampblack absorber with current stabilization denoising structure according to claim 1 is characterized in that: the last inwall (64) of described kuppe (6) is and seamlessly transits curved surface.
3. the lampblack absorber with current stabilization denoising structure according to claim 1, it is characterized in that: the edge, inside of described kuppe (6) has the connecting wall (62) that turns up, and this connecting wall (62) is fitted with the front shroud of spiral case (2) and is screwed on the front shroud of spiral case (2).
4. the lampblack absorber with current stabilization denoising structure according to claim 1, it is characterized in that: also have rear air inlet (22) on the described spiral case (2), form between the inwall at the rear wall of spiral case (2) and casing (1) rear portion be communicated with the air inlet (11) of casing after lead cigarette channel (5).
5. the lampblack absorber with current stabilization denoising structure according to claim 4, it is characterized in that: be connected with downward protrusion between the lower limb of the back shroud of the lower limb of the front shroud of described spiral case (2) and spiral case (2) and be the wind deflector (23) of curved surface, certainly this wind deflector (23) locate then to begin to be separated into aforesaid leading cigarette channel (5) and after lead cigarette channel (7).
6. according to the described lampblack absorber of arbitrary claim in the claim 1～5 with current stabilization denoising structure, it is characterized in that: be formed with the enclosed cavity of blocking with the air inlet (11) of casing (8) in the described casing (1), this enclosed cavity (8) is positioned at the outside of kuppe (6), and the wall portion of kuppe (6) has a plurality of tiny perforation (63) that communicate with annular seal space.
7. the lampblack absorber with current stabilization denoising structure according to claim 6 is characterized in that: described enclosed cavity is filled with sound-absorbing material in (8).
8. the lampblack absorber with current stabilization denoising structure according to claim 6, it is characterized in that: the lower edges (61) of described kuppe (6) is close to the inwall of casing (1), the front shroud of described spiral case forms described enclosed cavity (8) towards the left and right sides inwall of casing and upward inwall extension and applying respectively between the inwall that the outer wall of described kuppe (6) and casing (1) are anterior and the front shroud of spiral case (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200089534U CN201925993U (en) | 2011-01-10 | 2011-01-10 | Range hood with current-stabilization noise-reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200089534U CN201925993U (en) | 2011-01-10 | 2011-01-10 | Range hood with current-stabilization noise-reduction structure |
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| CN201925993U true CN201925993U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200089534U Expired - Fee Related CN201925993U (en) | 2011-01-10 | 2011-01-10 | Range hood with current-stabilization noise-reduction structure |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042628A (en) * | 2011-01-10 | 2011-05-04 | 宁波方太厨具有限公司 | Range hood with flow-stabilizing and noise-reducing structure |
| CN102536909A (en) * | 2012-01-17 | 2012-07-04 | 浙江欧意电器有限公司 | Fan volute for range hood |
| CN102748787A (en) * | 2012-06-15 | 2012-10-24 | 海尔集团公司 | Low noise range hood equipped with diversion noise reducing acoustical panel |
| CN104791872A (en) * | 2015-04-27 | 2015-07-22 | 浙江工贸职业技术学院 | Bladeless cooking fume suction device |
| CN104847698A (en) * | 2015-05-25 | 2015-08-19 | 中国船舶重工集团公司第七○二研究所 | Low-noise diversion volute of range hood |
| CN106091059A (en) * | 2016-07-27 | 2016-11-09 | 佛山市顺德区合捷电器实业有限公司 | A kind of air-intake device expanding air intake scope |
| CN107023862A (en) * | 2016-02-01 | 2017-08-08 | 宁波方太厨具有限公司 | A kind of top-sucking kitchen ventilator |
| EP3421891A1 (en) * | 2017-06-27 | 2019-01-02 | BSH Hausgeräte GmbH | Cooker hood |
| CN109595644A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of range hood |
| 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 |
| CN110094774A (en) * | 2018-01-31 | 2019-08-06 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
| CN110701654A (en) * | 2019-11-11 | 2020-01-17 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood and integrated stove |
| CN111433462A (en) * | 2017-12-13 | 2020-07-17 | 三菱电机株式会社 | Air blower and air conditioner with the same |
| CN111750394A (en) * | 2019-03-29 | 2020-10-09 | 青岛海尔智能技术研发有限公司 | Noise reduction method and device for range hood and range hood |
| CN114962336A (en) * | 2022-04-15 | 2022-08-30 | 祁华意 | A ventilation unit for environmental protection system |
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2011
- 2011-01-10 CN CN2011200089534U patent/CN201925993U/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042628B (en) * | 2011-01-10 | 2012-08-22 | 宁波方太厨具有限公司 | Range hood with flow-stabilizing and noise-reducing structure |
| CN102042628A (en) * | 2011-01-10 | 2011-05-04 | 宁波方太厨具有限公司 | Range hood with flow-stabilizing and noise-reducing structure |
| CN102536909A (en) * | 2012-01-17 | 2012-07-04 | 浙江欧意电器有限公司 | Fan volute for range hood |
| CN102748787A (en) * | 2012-06-15 | 2012-10-24 | 海尔集团公司 | Low noise range hood equipped with diversion noise reducing acoustical panel |
| CN104791872A (en) * | 2015-04-27 | 2015-07-22 | 浙江工贸职业技术学院 | Bladeless cooking fume suction device |
| CN104847698A (en) * | 2015-05-25 | 2015-08-19 | 中国船舶重工集团公司第七○二研究所 | Low-noise diversion volute of range hood |
| CN107023862B (en) * | 2016-02-01 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of top-sucking kitchen ventilator |
| CN107023862A (en) * | 2016-02-01 | 2017-08-08 | 宁波方太厨具有限公司 | A kind of top-sucking kitchen ventilator |
| CN106091059A (en) * | 2016-07-27 | 2016-11-09 | 佛山市顺德区合捷电器实业有限公司 | A kind of air-intake device expanding air intake scope |
| CN106091059B (en) * | 2016-07-27 | 2023-08-08 | 广东合捷电器股份有限公司 | Air inlet device capable of expanding air inlet range |
| EP3421891A1 (en) * | 2017-06-27 | 2019-01-02 | BSH Hausgeräte GmbH | Cooker hood |
| CN109595644A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of range hood |
| CN109595644B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN111433462A (en) * | 2017-12-13 | 2020-07-17 | 三菱电机株式会社 | Air blower and air conditioner with the same |
| CN111433462B (en) * | 2017-12-13 | 2021-10-01 | 三菱电机株式会社 | Air blower and air conditioner with the same |
| US11614096B2 (en) | 2017-12-13 | 2023-03-28 | Mitsubishi Electric Corporation | Air-sending device, and air-conditioning apparatus including the air-sending device |
| 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 |
| CN110094774A (en) * | 2018-01-31 | 2019-08-06 | 宁波方太厨具有限公司 | A kind of noise reducing type range hood |
| CN110094774B (en) * | 2018-01-31 | 2024-02-20 | 宁波方太厨具有限公司 | Noise-reducing type range hood |
| CN110094367B (en) * | 2018-01-31 | 2024-01-23 | 宁波方太厨具有限公司 | Noise reduction structure of fan guide plate |
| CN111750394A (en) * | 2019-03-29 | 2020-10-09 | 青岛海尔智能技术研发有限公司 | Noise reduction method and device for range hood and range hood |
| CN110701654B (en) * | 2019-11-11 | 2021-04-27 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood and integrated stove |
| CN110701654A (en) * | 2019-11-11 | 2020-01-17 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood and integrated stove |
| CN114962336A (en) * | 2022-04-15 | 2022-08-30 | 祁华意 | A ventilation unit for environmental protection system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20130110 |
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| CF01 | Termination of patent right due to non-payment of annual fee |