CN102042628B - Range hood with flow-stabilizing and noise-reducing structure - Google Patents
Range hood with flow-stabilizing and noise-reducing structure Download PDFInfo
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- CN102042628B CN102042628B CN2011100064283A CN201110006428A CN102042628B CN 102042628 B CN102042628 B CN 102042628B CN 2011100064283 A CN2011100064283 A CN 2011100064283A CN 201110006428 A CN201110006428 A CN 201110006428A CN 102042628 B CN102042628 B CN 102042628B
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- kuppe
- lampblack absorber
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Abstract
The invention relates to a range hood with a flow-stabilizing and noise-reducing structure. The range hood comprises a housing (1) with an air inlet (11) and an air outlet (12), wherein a volute housing (2) with a front air inlet (21) is mounted in the housing, and an impeller (4) which is driven by a motor (3) to rotate is mounted in the volute housing; and the range hood is characterized in that a diversion cover (6) for leading smoke gas from the air inlet of the housing to the front air inlet of the volute housing is fixedly arranged on a front cover plate of the volute housing, and a front smoke guide channel (7) with caliber which is gradually reduced from bottom to top is formed between the diversion cover and the front end surface of the volute housing. The front smoke guide channel with the caliber which is gradually reduced from bottom to top is conductive to accelerating the rise of gas flow, thus the swirl and gas loss in the front smoke guide channel can be reduced, the corresponding air volume is increased, the speed of sucking away oil smoke is accelerated, and the effect of sucking the oil smoke is improved; and simultaneously, the diversion cover can control the air inlet direction, and ensures that disorganized gas flow is changed into the way of entering in a directional and ordered way, and the conditions for generating eddy flow is reduced, thereby reducing the noise of the range hood.
Description
Technical field
The invention 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, and the air inlet place of casing is equipped with exhaust fume collecting hood, and 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, and the 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; Through the effect of blower fan, thereby form negative pressure when the gas in the body discharged the oil smoke of outside is sucked in the body, realize the purpose of oil smoke absorbing.
The size of noise is to estimate an important indicator of lampblack absorber quality, and the noise source of lampblack absorber is basically 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, back segment oil smoke flowing velocity particularly possibly occur and be slower than the situation of leading portion oil smoke flowing velocity, 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 is mobile disorderly and unsystematic simultaneously, increases the condition that turbulent flow produces, and the noise of lampblack absorber is bigger.
Summary of the invention
Technical problem to be solved by this invention 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 to above-mentioned prior art present situation; This lampblack absorber gets in the process in the spiral case air-flow, and inner vortex and windage loss reduce.
The present invention 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 said spiral case the kuppe of flue gas, form the bore edge leading cigarette channel that diminishes gradually of direction from bottom to top 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 is minimum to the obstruction of flue gas like this, can make flue gas steadily through leading cigarette channel, 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 with 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 enclosed cavity.Kuppe and enclosed cavity with tiny perforation constitute the helmholtz resonance chamber; Play the noise reduction effect, its sound absorption principle be its through the resonance effect, the acoustic energy that will pass through tiny perforation is through the friction and the damping of the hole wall of aperture; 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 a pore, so under the getter action of impeller; Flue gas can not have only sound wave energy through tiny perforation from tiny perforation through getting 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 get into, 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 said 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 that the outer wall of said kuppe and casing are anterior 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; The invention has the advantages that: when impeller was worked, air-flow got in the spiral case behind the leading cigarette channel that direction diminishes gradually from bottom to top through bore, helps quickening air-flow and rises; And inner whirlpool of leading cigarette channel and gas loss are reduced; Its corresponding air quantity obtains increasing, and quickens oil smoke and is siphoned away, and improves the oil smoke absorbing effect; Kuppe can be controlled the direction of air intake simultaneously, makes rambling air-flow, and the coherent entering of the direction that become 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 embodiment of the invention;
Fig. 2 faces the perspective view (removing the antetheca of exhaust fume collecting hood and casing) under the state for the embodiment of the invention;
Fig. 3 looks up the perspective view (removing exhaust fume collecting hood) under the state for the embodiment of the invention;
Fig. 4 is the stereochemical structure cutaway view of the embodiment of the invention;
Fig. 5 is the perspective view of kuppe in the embodiment of the invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Shown in Fig. 1～5, be a preferred embodiment of the present invention.
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, is connected with the air-out passage 9 with air outlet 12 conductings of casing in the oil smoke outlet at spiral case 2 tops, the impeller 4 by motor 3 driven in rotation 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, and the wall portion of kuppe 6 has a plurality of tiny perforation 63, forms 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 along direction from bottom to top gradually, and the flue gas through 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 said 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 with 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 gets in the spiral case 2 behind the leading cigarette channel 7 that direction diminishes gradually from bottom to top through bore; Help quickening air-flow and rise, and leading cigarette channel 7 inner whirlpool and gas losses are reduced, its corresponding air quantity obtains increasing; Quicken oil smoke and siphoned away, improve the oil smoke absorbing effect; Kuppe 6 can be controlled the direction of air intake, makes rambling air-flow, and the coherent entering of the direction that become 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 said enclosed cavity 8; Play the noise reduction effect, its sound absorption principle be its through the resonance effect, will pass through of friction and the damping of the acoustic energy of tiny perforation 63 through the hole wall of tiny perforation 63; Make quite a few acoustic energy change heat energy into and consume, the broadband noise that therefore 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); Impeller (4) by motor (3) driven in rotation is installed in the spiral case (2); It is characterized in that: be fixed with on the front shroud of said spiral case (2) the kuppe (6) of flue gas, form the bore edge leading cigarette channel (7) that diminishes gradually of direction from bottom to top 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 said 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 said 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 said 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 said 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 said 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 enclosed cavity.
7. the lampblack absorber with current stabilization denoising structure according to claim 6 is characterized in that: said 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 said kuppe (6) is close to the inwall of casing (1); The front shroud of said 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 said 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 |
|---|---|---|---|
| CN2011100064283A CN102042628B (en) | 2011-01-10 | 2011-01-10 | Range hood with flow-stabilizing and noise-reducing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100064283A CN102042628B (en) | 2011-01-10 | 2011-01-10 | Range hood with flow-stabilizing and noise-reducing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102042628A CN102042628A (en) | 2011-05-04 |
| CN102042628B true CN102042628B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100064283A Active CN102042628B (en) | 2011-01-10 | 2011-01-10 | Range hood with flow-stabilizing and noise-reducing structure |
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| CN102777951B (en) * | 2011-05-11 | 2014-08-27 | 浙江帅康电气股份有限公司 | Conductive range hood |
| CN103697512B (en) * | 2013-11-30 | 2016-08-24 | 宁波方太厨具有限公司 | A kind of silence exhauster for removing cooking fumes |
| CN103982469B (en) * | 2014-05-21 | 2016-06-29 | 西安交通大学 | A kind of for the denoising draught fan spiral case in smoke exhaust ventilator |
| CN105716135B (en) * | 2016-04-14 | 2018-05-01 | 广东美的厨房电器制造有限公司 | Range hood |
| CN106051872B (en) * | 2016-07-22 | 2018-07-17 | 宁波方太厨具有限公司 | A kind of range hood |
| CN106402974B (en) * | 2016-11-11 | 2019-02-15 | 宁波方太厨具有限公司 | A kind of noise reduction range hood |
| CN106482187B (en) * | 2016-11-11 | 2019-02-15 | 宁波方太厨具有限公司 | A kind of application has the range hood of noise reduction impeller |
| CN109140547A (en) * | 2017-06-27 | 2019-01-04 | 博西华电器（江苏）有限公司 | Range hood |
| CN107449001A (en) * | 2017-07-31 | 2017-12-08 | 广东美的厨房电器制造有限公司 | Range hood |
| CN109595644B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN108240648B (en) * | 2017-10-31 | 2023-11-17 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
| CN110274272B (en) * | 2018-03-13 | 2024-02-20 | 宁波方太厨具有限公司 | Noise-reducing type range hood |
| CN110701648B (en) * | 2018-07-10 | 2024-05-24 | 佛山市顺德区合捷电器实业有限公司 | Noise reduction component and smoke exhaust ventilator |
| CN109058175B (en) * | 2018-07-26 | 2020-07-14 | 广东海信家电有限公司 | Noise reduction device |
| CN110822505B (en) * | 2018-08-10 | 2021-05-25 | 佛山市顺德区美的洗涤电器制造有限公司 | Smoke exhaust ventilator |
| CN109306973A (en) * | 2018-09-19 | 2019-02-05 | 西北工业大学 | A kind of spiral case with multilayer guide vane structure for kitchen ventilator |
| CN112856514A (en) * | 2021-01-11 | 2021-05-28 | 宁波方太厨具有限公司 | Range hood and control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471537A (en) * | 1992-11-03 | 1995-11-28 | Aktiebolaget Electrolux | Kitchen ventilator |
| US5983888A (en) * | 1999-04-07 | 1999-11-16 | Whirlpool Corporation | Low noise cooker hood |
| CN2434574Y (en) * | 2000-05-29 | 2001-06-13 | 吴灼展 | Cooker hood |
| CN2695833Y (en) * | 2004-03-29 | 2005-04-27 | 周彬 | Kitchen ventilator with side air intake device |
| CN101457946A (en) * | 2007-12-11 | 2009-06-17 | 宁波方太厨具有限公司 | Bionic micropore noise reduction structure for smoke exhaust system |
| CN201476135U (en) * | 2009-09-04 | 2010-05-19 | 宁波方太厨具有限公司 | Close-suction range hood with smoke collecting cavity |
| CN201925993U (en) * | 2011-01-10 | 2011-08-10 | 宁波方太厨具有限公司 | Range hood with current-stabilization noise-reduction structure |
-
2011
- 2011-01-10 CN CN2011100064283A patent/CN102042628B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5471537A (en) * | 1992-11-03 | 1995-11-28 | Aktiebolaget Electrolux | Kitchen ventilator |
| US5983888A (en) * | 1999-04-07 | 1999-11-16 | Whirlpool Corporation | Low noise cooker hood |
| CN2434574Y (en) * | 2000-05-29 | 2001-06-13 | 吴灼展 | Cooker hood |
| CN2695833Y (en) * | 2004-03-29 | 2005-04-27 | 周彬 | Kitchen ventilator with side air intake device |
| CN101457946A (en) * | 2007-12-11 | 2009-06-17 | 宁波方太厨具有限公司 | Bionic micropore noise reduction structure for smoke exhaust system |
| CN201476135U (en) * | 2009-09-04 | 2010-05-19 | 宁波方太厨具有限公司 | Close-suction range hood with smoke collecting cavity |
| CN201925993U (en) * | 2011-01-10 | 2011-08-10 | 宁波方太厨具有限公司 | Range hood with current-stabilization noise-reduction structure |
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| CN102042628A (en) | 2011-05-04 |
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