CN103697512A - Silent range hood - Google Patents
Silent range hood Download PDFInfo
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- CN103697512A CN103697512A CN201310627547.XA CN201310627547A CN103697512A CN 103697512 A CN103697512 A CN 103697512A CN 201310627547 A CN201310627547 A CN 201310627547A CN 103697512 A CN103697512 A CN 103697512A
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- spiral case
- plane plate
- micropore
- cooking fumes
- sound
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Abstract
The invention discloses a silent range hood comprising a machine enclosure and an exhaust fume collecting hood with an air inlet, wherein a spiral casing is arranged in the machine enclosure and is provided with a front air inlet and a back air inlet. The silent range hood is characterized in that a sound absorption flow guide hood is arranged on a front cover plate of the machine enclosure and is just opposite to the front air inlet of the spiral casing, a closed cavity is formed between the sound absorption flow guide hood and the front cover plate of the machine enclosure, a plurality of first micro-pores communicated with the closed cavity are formed in a back panel, opposite to the front air inlet, of the sound absorption flow guide hood, and the closed cavity is filled with first sound absorbing cotton. According to the invention, the sound absorption flow guide hood is just opposite to the front air inlet of the spiral casing and is provided with the micro-pores and the closed cavity is filled with the sound absorbing cotton, so that most of low-frequency, medium-frequency and high-frequency noise radiated outwards from the front air inlet can be absorbed; by reasonable selections of the aperture and the center distance of the micro-pores and the filling area of the sound absorbing cotton, the sound absorbing effect can be further strengthened.
Description
Technical field
The present invention relates to a kind of range hood, especially a kind of silence exhauster for removing cooking fumes.
Background technology
Range hood has become one of machine for kitchen use equipment indispensable in Modern Family, and conventionally range hood comprises top suction type and side-suction type, and the range hood of top suction type is due to clean and tidy light and handy, the advantage such as little that takes up room, and in an increasingly wide range of applications.Top-sucking kitchen ventilator generally includes exhaust fume collecting hood, is positioned at the blower housing on exhaust fume collecting hood, and the motor of spiral case, impeller and drives impeller is installed in blower housing.
The air inlet of this range hood is positioned at the side of spiral case, is single admission, and incoming air area is little, and mist extractor amount is not very desirable.For this reason, the range hood of some both sides air inlets is also disclosed at present, as the applicant's the application number Chinese patent application that is 201110027636.1, a kind of range hood with air-suction double-injection acceleration function is disclosed, there is cabinet and exhaust fume collecting hood, in cabinet, be provided with spiral case, in spiral case, be provided with impeller and motor, spiral case is provided with advance air port and rear air inlet, exhaust fume collecting hood smoke-collecting area initiating terminal to the air port of advancing has the first oil smoke passage, exhaust fume collecting hood smoke-collecting area initiating terminal to rear air inlet has the second oil smoke passage, the bore of two oil smoke passages diminishes gradually, being conducive to accelerate air-flow rises, acceleration oil smoke is sucked away, improve smoke absorption effect.
Yet, owing to having formed two oil smoke passages, oil smoke enters in blower fan from former and later two air inlets, and the noise of range hood is mainly derived from centrifugal blower inside, centrifugal blower can, by two air inlets toward the larger noise of external radiation, also need to be improved further in the process of work thus.
Summary of the invention
Technical problem to be solved by this invention is the problem existing for above-mentioned prior art, and a kind of silence exhauster for removing cooking fumes that significantly reduces noise is provided.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of silence exhauster for removing cooking fumes, comprise casing and the exhaust fume collecting hood with air inlet, in described casing, be provided with spiral case, described spiral case has the air port of advancing and rear air inlet, it is characterized in that, position over against the air port of advancing of described spiral case on the front cover plate of described casing is provided with sound-absorbing kuppe, between described sound-absorbing kuppe and front cover plate, form airtight cavity, on the rear board relative with the air port of advancing of described sound-absorbing kuppe, offer the first micropore that a plurality of and described airtight cavity is communicated with, in described airtight cavity, be filled with the first acoustical cotton.
In order further to improve sound-absorbing effect, described the first micropore is uniformly distributed, and the radius of the first micropore is R
1, the centre-to-centre spacing between the first micropore is t
1, 0.126<R
1/ t
1<0.282, can remain on the punching rate of rear board between 5%-25% thus, and sound-absorbing effect is good.
In order further to improve sound-absorbing effect, described the first acoustical cotton fills up whole described airtight cavity, is conducive to improve sound-absorption coefficient, and sound-absorbing effect is good.
Described rear board is obliquely installed, distance between rear board and front cover plate from top to bottom reduces gradually, can be so that the footpath, front oil smoke passway of advancing between air port of rear board and spiral case diminishes from bottom to top gradually, be conducive to accelerate air-flow and rise, and guide air-flow to enter more swimmingly the air port of advancing of spiral case.
The structure of sound-absorbing kuppe, can be preferably, between the both sides of described rear board and front cover plate, be respectively equipped with end face, between the upper end of described rear board, two end faces, be provided with top panel, rear board, end face, top panel and front cover plate form described airtight cavity.
For ease of sound-absorbing kuppe and casing, fix, the front end of described top panel has the first flange extending internally, the lower end of described rear board has the second flange that extends beyond end face lower end, and described sound-absorbing kuppe is connected by the first flange and the second flange and front cover plate.
Described spiral case comprise spiral case front shroud, spiral case back shroud and be connected to spiral case front shroud and spiral case back shroud between middle casing, between described spiral case front shroud and the lower limb of spiral case back shroud, be connected with the downward curved wind deflector that shelters from middle casing that protrudes into, by wind deflector, oil smoke passage is divided into front oil smoke passage and rear oil smoke passage, not only play the effect of shunting, but also can drainage, noise reduction, make air-flow more steady.
In preferred embodiment of the present invention, described wind deflector comprises frontal plane plate, back plane plate, and be connected to the cambered plate between frontal plane plate and back plane plate lower limb, described frontal plane plate and back plane plate are all inclination towards the direction of cambered plate, between described wind deflector and the middle casing of spiral case, be formed with inner chamber, two oil smoke passages all reduce from the bottom to top gradually, are conducive to air-flow and accelerate to rise.
For absorbing the down noise of radiation of two oil smoke passages, in one embodiment of the invention, on described frontal plane plate and back plane plate, all offer the second micropore that the inner chamber that forms between a plurality of and described wind deflector and middle casing is communicated with, in described inner chamber, be filled with the second acoustical cotton, the second micropore and the second acoustical cotton can absorb respectively the noise of medium and low frequency, medium-high frequency.
In order further to improve sound-absorbing effect, described the second micropore is uniformly distributed, and the radius of the second micropore is R
2, the centre-to-centre spacing between the second micropore is t
2, 0.126<R
2/ t
2<0.282, can remain on the punching rate of frontal plane plate and back plane plate between 5%-25% thus, and sound-absorbing effect is good.
In order further to improve sound-absorbing effect, described the second acoustical cotton fills up whole described inner chamber, is conducive to improve sound-absorption coefficient, and sound-absorbing effect is good.
For absorbing the down noise of radiation of rear oil smoke passage, in one embodiment of the invention, on described back plane plate, offer a plurality of the second micropores, the inwall of described back plane plate is provided with the second acoustical cotton.
The middle casing of described spiral case is provided with oil dripping mouth, and the back plane plate relevant position of wind deflector offers the oil dripping hole passing for oil dripping mouth, the grease remaining in spiral case can be derived, and by the deflector in the setting of exhaust fume collecting hood air inlet, guides in lubricating cup.
Compared with prior art, the invention has the advantages that: by the position in the air port of advancing over against spiral case, sound-absorbing kuppe is set, on sound-absorbing kuppe, offer micropore, and fill acoustical cotton within it, can absorb the most air port radiation outward of advancing in, the noise of low, high frequency; Rear board by sound-absorbing kuppe over against the air port of advancing is obliquely installed, can be so that the footpath, front oil smoke passway of advancing between air port of rear board and spiral case diminishes from bottom to top gradually, be conducive to accelerate air-flow and rise, and guide air-flow to enter more swimmingly the air port of advancing of spiral case; Between spiral case front shroud and the lower limb of spiral case back shroud, be connected with the downward curved wind deflector that shelters from middle casing that protrudes into, by wind deflector, oil smoke passage is divided into front oil smoke passage and rear oil smoke passage, not only play the effect of shunting, but also can drainage, noise reduction, make air-flow more steady; On at least one surface plate of wind deflector, offer micropore, in the inner chamber of wind deflector and middle casing formation, acoustical cotton is set, can further strengthen the sound-absorbing effect to the noise of former and later two oil smoke passage radiation.
Accompanying drawing explanation
Fig. 1 is the front view of range hood of the present invention;
Fig. 2 is the cutaway view of first embodiment of range hood of the present invention;
Fig. 3 is the perspective view of first embodiment of the centrifugal blower of range hood of the present invention;
Fig. 4 is the perspective view of sound-absorbing kuppe of the present invention;
Fig. 5 is the side view of sound-absorbing kuppe of the present invention;
Fig. 6 is the partial elevation view of the rear board of sound-absorbing kuppe of the present invention;
Fig. 7 is the partial elevation view of the frontal plane plate of wind deflector of the present invention;
Fig. 8 is the structural representation of the first acoustical cotton of the present invention;
Fig. 9 is the structural representation of first embodiment of the second acoustical cotton of the present invention;
Figure 10 is the cutaway view of second embodiment of range hood of the present invention;
Figure 11 is the structural representation of second embodiment of the centrifugal blower of range hood of the present invention;
Figure 12 is the structural representation of second embodiment of the second acoustical cotton of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Embodiment mono-
Referring to Fig. 1-Fig. 3, a kind of silence exhauster for removing cooking fumes, comprises casing 1 and exhaust fume collecting hood 2, and casing 1 comprises front cover plate 11 and rear chassis plate 12, is provided with spiral case 3 in casing 1, is provided with impeller 4 and for the motor 5 of drives impeller 4 in spiral case 3.
On rear board 131, offer the first micropore 1311 that a plurality of with above-mentioned cavity is communicated with, referring to Fig. 6, preferred, the first micropore 1311 is equidistantly arranged, and the radius of note the first micropore 1311 is R
1, the centre-to-centre spacing between the first micropore 1311 is t
1, preferred, get 0.126<R
1/ t
1<0.282, the air port 31 of advancing that the first micropore 1311 can absorb spiral case 3 is thus toward extraradial noise, and the sound-absorbing effect of centering low frequency noise is comparatively obvious, and the value of radius and centre-to-centre spacing is preferably 0.126<R
1/ t
1<0.282, can remain on the punching rate of rear board 131 between 5%-25%, has further improved sound-absorbing effect.
In the airtight cavity forming between above-mentioned sound-absorbing kuppe 13 and front cover plate 11, be filled with the first acoustical cotton 136, referring to Fig. 8, the first acoustical cotton 136 can be preferably polyurethane foam, and its shape is consistent with the shape of cavity, thereby fills up whole cavity.The first acoustical cotton 136 adopts polyurethane foam as sound-absorbing material, and the sound-absorbing effect of centering, high frequency noise is comparatively obvious, fills up whole cavity and is conducive to improve sound-absorption coefficient, further to improve sound-absorbing effect.
Between the spiral case front shroud 33 of spiral case 3 and the lower limb of spiral case back shroud 34, be connected with the downward curved wind deflector 6 that protrudes into, this wind deflector 6 shelters from the middle casing 35 being connected between spiral case front shroud 33 and spiral case back shroud 34 thus.Wind deflector 6 is divided into front oil smoke passage 7 above and rear oil smoke passage 8 below by oil smoke passage, front oil smoke passage 7 is communicated to the air port 31 of advancing of spiral case 3, and bore diminishes from bottom to top gradually between the spiral case front shroud 33 of spiral case 3 and the front cover plate 11 of casing 1, be conducive to thus accelerate air-flow and rise, and guide air-flow to enter more swimmingly the air port 31 of advancing of spiral case 3.Rear oil smoke passage 8 is communicated to the rear air inlet 32 of spiral case 3, and front oil smoke passage 7 and the rear oil smoke passage 8 air inlet place to exhaust fume collecting hood below wind deflector 6 shares same oil smoke passage.
In the inner chamber forming between the middle casing 35 of wind deflector 6 and spiral case 3, be filled with the second acoustical cotton 65, referring to Fig. 9, the second acoustical cotton 9 also can adopt polyurethane foam, and its shape is consistent with the shape of cavity, thereby fills up whole cavity.The second acoustical cotton 9 adopts polyurethane foam as sound-absorbing material, and the sound-absorbing effect of centering, high frequency noise is comparatively obvious, fills up whole cavity and is conducive to improve sound-absorption coefficient, further to improve sound-absorbing effect.
The middle casing 35 of spiral case 3 is provided with oil dripping mouth 351, back plane plate 62 relevant positions of wind deflector 6 offer oil dripping hole 621, oil dripping mouth 351 stretches out from oil dripping hole 621, the grease remaining in spiral case 3 can be derived, and by the deflector 9 in exhaust fume collecting hood 2 air inlet settings, guides in lubricating cup 10.
Embodiment bis-
Referring to Figure 10-Figure 12, in the present embodiment, be with the difference of embodiment mono-, wind deflector 6 only offers the second micropore 64 on back plane plate 62, and it is consistent with the cavity shape that back plane plate 62 inwalls form to cambered plate 63 tops only at the inwall of back plane plate 62, to be provided with the shape of the second acoustical cotton 65, the second acoustical cottons 65.
Claims (13)
1. a silence exhauster for removing cooking fumes, comprise casing (1) and there is the exhaust fume collecting hood (2) of air inlet, in described casing (1), be provided with spiral case (3), described spiral case (3) has the air port of advancing (31) and rear air inlet (32), it is characterized in that, the position in the upper air port of advancing (31) over against described spiral case (3) of front cover plate (11) of described casing (1) is provided with sound-absorbing kuppe (13), between described sound-absorbing kuppe (13) and front cover plate (11), form airtight cavity, on the rear board (131) relative with the air port of advancing (31) of described sound-absorbing kuppe (13), offer the first micropore (1311) that a plurality of and described airtight cavity is communicated with, in described airtight cavity, be filled with the first acoustical cotton (136).
2. silence exhauster for removing cooking fumes as claimed in claim 1, is characterized in that, described the first micropore (1311) is uniformly distributed, and the radius of the first micropore (1311) is R
1, the centre-to-centre spacing between the first micropore (1311) is t
1, 0.126<R
1/ t
1<0.282.
3. silence exhauster for removing cooking fumes as claimed in claim 1, is characterized in that, described the first acoustical cotton (136) fills up whole described airtight cavity.
4. the silence exhauster for removing cooking fumes as described in any one in claim 1-3, is characterized in that, described rear board (131) is obliquely installed, and the distance between rear board (131) and front cover plate (11) from top to bottom reduces gradually.
5. silence exhauster for removing cooking fumes as claimed in claim 4, it is characterized in that, between the both sides of described rear board (131) and front cover plate (11), be respectively equipped with end face (132), between the upper end of described rear board (131), two end faces (132), be provided with top panel (133), rear board (131), end face (132), top panel (133) and front cover plate (11) form described airtight cavity.
6. silence exhauster for removing cooking fumes as claimed in claim 5, it is characterized in that, the front end of described top panel (133) has the first flange (134) extending internally, the lower end of described rear board (131) has the second flange (135) that extends beyond end face (132) lower end, and described sound-absorbing kuppe (13) is connected with front cover plate (11) by the first flange (134) and the second flange (135).
7. the silence exhauster for removing cooking fumes as described in any one in claim 1-3, it is characterized in that, described spiral case (3) comprise spiral case front shroud (33), spiral case back shroud (34) and be connected to spiral case front shroud (33) and spiral case back shroud (34) between middle casing (35), between described spiral case front shroud (33) and the lower limb of spiral case back shroud (34), be connected with the downward curved wind deflector (6) that shelters from middle casing (35) that protrudes into.
8. silence exhauster for removing cooking fumes as claimed in claim 7, it is characterized in that, described wind deflector (6) comprises frontal plane plate (61), back plane plate (62), and be connected to the cambered plate (63) between frontal plane plate (61) and back plane plate (62) lower limb, described frontal plane plate (61) and back plane plate (62) are all inclination towards the direction of cambered plate (63), between described wind deflector (6) and the middle casing (35) of spiral case (3), are formed with inner chamber.
9. silence exhauster for removing cooking fumes as claimed in claim 8, it is characterized in that, on described frontal plane plate (61) and back plane plate (62), all offer between a plurality of and described wind deflector (6) and middle casing (35) the second micropore (64) that the inner chamber that forms is communicated with, in described inner chamber, be filled with the second acoustical cotton (65).
10. silence exhauster for removing cooking fumes as claimed in claim 9, is characterized in that, described the second micropore (64) is uniformly distributed, and the radius of the second micropore (64) is R
2, the centre-to-centre spacing between the second micropore (64) is t
2, 0.126<R
2/ t
2<0.282.
11. silence exhauster for removing cooking fumes as claimed in claim 9, is characterized in that, described the second acoustical cotton (65) fills up whole described inner chamber.
12. silence exhauster for removing cooking fumes as claimed in claim 8, is characterized in that, offer a plurality of the second micropores (64) on described back plane plate (62), and the inwall of described back plane plate (62) is provided with the second acoustical cotton (65).
13. silence exhauster for removing cooking fumes as claimed in claim 8, it is characterized in that, the middle casing (35) of described spiral case (3) is provided with oil dripping mouth (351), and back plane plate (62) relevant position of wind deflector (6) offers the oil dripping hole (621) passing for oil dripping mouth (351).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310627547.XA CN103697512B (en) | 2013-11-30 | 2013-11-30 | A kind of silence exhauster for removing cooking fumes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310627547.XA CN103697512B (en) | 2013-11-30 | 2013-11-30 | A kind of silence exhauster for removing cooking fumes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103697512A true CN103697512A (en) | 2014-04-02 |
| CN103697512B CN103697512B (en) | 2016-08-24 |
Family
ID=50359129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310627547.XA Ceased CN103697512B (en) | 2013-11-30 | 2013-11-30 | A kind of silence exhauster for removing cooking fumes |
Country Status (1)
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| CN (1) | CN103697512B (en) |
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| CN103982469A (en) * | 2014-05-21 | 2014-08-13 | 西安交通大学 | Noise reduction fan volute for range hood |
| CN104913360A (en) * | 2015-07-06 | 2015-09-16 | 苏州斯洛莱自动化设备有限公司 | Range hood with noise reduction mask |
| CN105716135A (en) * | 2016-04-14 | 2016-06-29 | 广东美的厨房电器制造有限公司 | Extractor hood |
| CN105757744A (en) * | 2014-12-19 | 2016-07-13 | 广东顺德村田电器有限公司 | Air suction purification device for range hood |
| CN106051867A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Filter screen of exhaust hood |
| CN106066055A (en) * | 2016-07-22 | 2016-11-02 | 宁波方太厨具有限公司 | A kind of range hood |
| CN106123064A (en) * | 2016-07-14 | 2016-11-16 | 广东美的厨房电器制造有限公司 | Range hood |
| CN106322474A (en) * | 2016-08-28 | 2017-01-11 | 杭州老板电器股份有限公司 | Flow-guiding, sound-absorbing and three-dimensional noise-reducing system of kitchen ventilator |
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| CN108332259A (en) * | 2018-05-04 | 2018-07-27 | 杭州老板电器股份有限公司 | Kitchen ventilator and lampblack purifying system |
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| CN103982469A (en) * | 2014-05-21 | 2014-08-13 | 西安交通大学 | Noise reduction fan volute for range hood |
| CN105757744A (en) * | 2014-12-19 | 2016-07-13 | 广东顺德村田电器有限公司 | Air suction purification device for range hood |
| CN104913360A (en) * | 2015-07-06 | 2015-09-16 | 苏州斯洛莱自动化设备有限公司 | Range hood with noise reduction mask |
| CN105716135B (en) * | 2016-04-14 | 2018-05-01 | 广东美的厨房电器制造有限公司 | Range hood |
| CN105716135A (en) * | 2016-04-14 | 2016-06-29 | 广东美的厨房电器制造有限公司 | Extractor hood |
| CN106123064A (en) * | 2016-07-14 | 2016-11-16 | 广东美的厨房电器制造有限公司 | Range hood |
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| CN106765384A (en) * | 2016-12-15 | 2017-05-31 | 杭州老板电器股份有限公司 | A kind of perforated microstructure low noise lampblack absorber |
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| CN107449007A (en) * | 2017-09-15 | 2017-12-08 | 华帝股份有限公司 | A kind of range hood |
| CN107687489A (en) * | 2017-09-22 | 2018-02-13 | 北京天宜上佳新材料股份有限公司 | A kind of brake pad steel back with loose structure and the brake pad with it |
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| CN109595632B (en) * | 2017-09-30 | 2023-11-17 | 宁波方太厨具有限公司 | Near-suction type range hood |
| CN107990390A (en) * | 2018-01-22 | 2018-05-04 | 广东美的厨房电器制造有限公司 | A kind of range hood |
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| CN108731069A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with noise filtering function bellows |
| CN109236744A (en) * | 2018-10-19 | 2019-01-18 | 西北工业大学 | A kind of volute structure for kitchen ventilator with circular arc inlet cone sidewall slope |
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| CN110186082B (en) * | 2019-05-07 | 2024-01-23 | 宁波方太厨具有限公司 | Side-suction type range hood |
| CN111023218A (en) * | 2020-01-03 | 2020-04-17 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN111023218B (en) * | 2020-01-03 | 2021-11-26 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN114109924A (en) * | 2020-08-28 | 2022-03-01 | 宁波方太厨具有限公司 | Impeller, fan system applying same and range hood |
| CN112283771A (en) * | 2020-10-14 | 2021-01-29 | 青岛海尔智慧厨房电器有限公司 | Smoke collecting hood and range hood |
| CN114811682A (en) * | 2022-03-30 | 2022-07-29 | 宁波方太厨具有限公司 | A subassembly and range hood of making an uproar falls for range hood |
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