CN101858613B - Jet flow type smoke exhaust ventilator and fluidic generator thereof - Google Patents

Jet flow type smoke exhaust ventilator and fluidic generator thereof Download PDF

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Publication number
CN101858613B
CN101858613B CN2010102318576A CN201010231857A CN101858613B CN 101858613 B CN101858613 B CN 101858613B CN 2010102318576 A CN2010102318576 A CN 2010102318576A CN 201010231857 A CN201010231857 A CN 201010231857A CN 101858613 B CN101858613 B CN 101858613B
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China
Prior art keywords
shell
housing
fluidic
smoke exhaust
exhaust ventilator
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CN2010102318576A
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Chinese (zh)
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CN101858613A (en
Inventor
林小冬
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林小冬
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Priority to CN2010102318576A priority Critical patent/CN101858613B/en
Publication of CN101858613A publication Critical patent/CN101858613A/en
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Publication of CN101858613B publication Critical patent/CN101858613B/en

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Abstract

The invention discloses a fluidic generator applied on a smoke exhaust ventilator, comprising an outer shell and an inner shell arranged in the outer shell, wherein the inner shell and the outer shell are both in broadening formation, and the outer shell is provided with an air intake; the top edges of the inner shell and the outer shell are mutually connected into a whole; the bottom edge of the inner shell is provided with a first edgefold part towards the outer shell; and the lower edge of the outer shell is provided with a second edgefold part towards the inner shell, and a jet flow path is formed in a gap formed between the second edgefold part and the first edgefold part. The invention also discloses a jet flow type smoke exhaust ventilator adopting the fluidic generator. The invention is characterized in that the fluidic generator generates jet flow air flow, the air flow is mixed with soot gas to be discharged from a fume exhaust pipeline; vane wheels and the motor are completely separated from soot gas so as to solve the problem that vanes and fans are polluted by the soot gas, and realizing the purpose that the vanes and the fan are free from disassembling and washing for lives.

Description

Jet flow type smoke exhaust ventilator and fluidic generator thereof
Technical field
The present invention relates to family kitchen and use equipment, particularly relate to jet flow type smoke exhaust ventilator and fluidic generator thereof.
Background technology
The family's smoke exhaust ventilator that generally uses at present; Its operation principle is that direct placed axis streaming centrifugal blower is realized the pump drainage oil smoke on the exhaust passage, and the problem that this structure exists is that blade directly contacts oil smoke with blower fan; Blower fan is easy to be infected with oil smoke; Cleaning after the use bothers very much, and is serious even can damage centrifugal blower, shortens service life of a machine greatly.
Chinese invention patent 98107575.4; 00134096.4; 01102828.9 and Chinese utility model patent 200620079304.2 provides the technical scheme of jet flow type smoke exhaust ventilator respectively; The negative-pressure adsorption oil smoke that utilizes Gas Jet to produce, blower fan and soot gas are isolated fully, thereby have solved the existing defective of above-mentioned common lampblack absorber; But; The jet of jet flow type smoke exhaust ventilator generation Gas Jet all is set at away from exhaust fume collecting hood cover mouth and leads on the outdoor discharge duct in the such scheme, and the negative-pressure adsorption that the jet jet is produced acts on when arriving exhaust fume collecting hood cover mouth and weakens greatly and reduce, and does not often reach the oil smoke that abundant absorption is in the exhaust fume collecting hood below.
In order to reach better effect; Chinese invention patent 01102828.9 has been taked leading to installation two-stage even multistage fluidic device on the outdoor exhaust passage; Yet in the technical scheme that it provided, structure is too loose and huge; The blower fan of big air quantity even need independent installation out of doors wherein, this brings very big inconvenience for domestic consumer when installing and use.China's utility model patent 200620079304.2 has structurally installed air curtain and lampblack filter additional; But the design of its jet cavity is scientific and reasonable inadequately; The jet cavity volume is too huge, can't form the high velocity jet air-flow, and is very limited to the suction-operated of the soot gas below the exhaust fume collecting hood.
In sum, technique scheme has all been done some trials and improvement to jet flow type smoke exhaust ventilator, but from the effect of integral body, smoke discharging effect is unsatisfactory.
Summary of the invention
Technical problem to be solved by this invention is to solve the problem that improves the jet flow type smoke exhaust ventilator smoke discharging effect.
In order to solve the problems of the technologies described above; The technical scheme that the present invention adopted provides a kind of lampblack absorber fluidic generator; Comprise shell body and the inner housing that is arranged in the shell body; Equal flare of inside and outside housing and shell body are provided with air inlet, and the top margin of inside and outside housing is along connecting as one mutually, and the base of inner housing is along the first flanging portion that is provided with the outward housing; The lower edge of shell body is provided with the second flanging portion towards inner housing, and the folded gap of the second flanging portion and the first flanging portion forms fluidic channel.
In above-mentioned lampblack absorber fluidic generator scheme, the angle of the tangential direction of said fluidic channel opening part and the sidewall of inner housing is the 0-30 degree.
In above-mentioned lampblack absorber fluidic generator scheme, the angle of the tangential direction of said fluidic channel opening part and the sidewall of inner housing is 15 degree.
In above-mentioned lampblack absorber fluidic generator scheme, the width of said fluidic channel opening part is 1-5mm.
In above-mentioned lampblack absorber fluidic generator scheme, the width of said fluidic channel opening part is 1.5mm.
The present invention also provides a kind of jet flow type smoke exhaust ventilator, comprises smoke exhaust ventilator housing and cooking fume filter, and the end face of this smoke exhaust ventilator housing is provided with smoke discharging pipe; First fluidic generator is installed in the smoke exhaust ventilator housing; Said first fluidic generator comprises shell body and the inner housing that is arranged in the shell body, and equal flare of said shell body and inner housing and shell body are provided with air inlet, and this air inlet connects first air blast; The top margin of inside and outside housing is along connecting as one mutually; The base of inner housing is along the first flanging portion that is provided with the outward housing, and the lower edge of shell body is provided with the second flanging portion towards inner housing, and the folded gap of the second flanging portion and the first flanging portion forms fluidic channel; Said cooking fume filter is arranged on the inner housing, and the distance between the bottom surface of shell body and the smoke exhaust ventilator housing base is 0-100mm.
In above-mentioned jet flow type smoke exhaust ventilator scheme, the angle of the tangential direction of said fluidic channel opening part and the sidewall of inner housing is the 0-30 degree.
In above-mentioned jet flow type smoke exhaust ventilator scheme, the angle of the tangential direction of said fluidic channel opening part and the sidewall of inner housing is 15 degree.
In above-mentioned jet flow type smoke exhaust ventilator scheme, the width of said fluidic channel opening part is 1-5mm.
In above-mentioned jet flow type smoke exhaust ventilator scheme; Also comprise second fluidic generator identical with the first fluidic generator structure; Said second fluidic generator is arranged on the top of first fluidic generator, and the air inlet on the shell body of second fluidic generator connects second air blast.
The present invention produces the jet air-flow through fluidic generator and sweeps along soot gas to discharge from smoke discharging pipe; Therefore the complete and soot gas isolation of impeller and motor; Solve blade and fan by the soot gas pollution problems, really accomplished to exempt from all the life to unpick and wash blade and blower fan.
Description of drawings
Fig. 1 is the structural representation of fluidic generator of the present invention;
Fig. 2 is first kind of example structure sketch map of jet flow type smoke exhaust ventilator of the present invention;
Fig. 3 is second kind of example structure sketch map of jet flow type smoke exhaust ventilator of the present invention;
Smoke evacuation sketch map when Fig. 4 works for second kind of embodiment of jet flow type smoke exhaust ventilator of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is made detailed explanation.
As shown in Figure 1, lampblack absorber fluidic generator provided by the invention comprises shell body 1 and the inner housing 2 that is arranged in the shell body 1, and the material of inside and outside housing can be selected plastics, other material moulding of iron sheet for use.
Shell body 1 is provided with air inlet 3 with inner housing 2 equal flares and shell body 1; The top margin of inside and outside housing 1,2 is along connecting as one mutually; The base of inner housing 2 is along the first flanging portion 4 that is provided with outward housing 1; The lower edge of shell body 1 is provided with towards 5, the second flanging portions 5 of the second flanging portion of inner housing 2 and the first flanging portion, 4 folded gaps and forms fluidic channel 6.The angle of the tangential direction of fluidic channel 6 opening parts and the sidewall of inner housing 2 is the 0-30 degree; Preferable selection is that the angle of the sidewall of fluidic channel and inner housing is 15 degree; The width of fluidic channel opening part is 1-5mm, and the preferable width that is chosen as the fluidic channel opening part is 1.5mm.Above-mentioned selection is according to Kang Enda principle and Reynolds coefficient, through accurate calculating with a large amount of experiment drew, guarantees that at the air-flow that the fluidic channel opening part penetrates be laminar flow shape gas and the disorderly air-flow of unlikely generation.The Reynolds coefficient is meant the ratio of inertia force and viscous force, Reynolds number hour, the influence of viscous force stream field is greater than inertia force, the disturbance meeting of flow velocity decays because of viscous force in the flow field, fluid flows stable, is laminar flow; Otherwise when big as if Reynolds number, the influence of inertia force stream field is greater than viscous force, and fluid flows unstable, and the minor variations of flow velocity develops easily, strengthens, and formation is disorderly, irregular turbulence flow flied, that is to say that Reynolds number has determined the stable case of fluid.General pipeline stream Reynolds number<2100 are laminar condition, and greater than 4000 being turbulence state, 2000~4000 is the transition flow state.
The present invention also provides a kind of jet flow type smoke exhaust ventilator with above-mentioned fluidic generator; The structure of first kind of embodiment is as shown in Figure 2, comprises smoke exhaust ventilator housing 100 and cooking fume filter 200, and the end face of this smoke exhaust ventilator housing 100 is provided with smoke discharging pipe 20; First fluidic generator 10 is installed in the smoke exhaust ventilator housing 100; Said first fluidic generator 10 comprises shell body 11 and the inner housing 12 that is arranged in the shell body 11, and said shell body 11 is provided with air inlet with inner housing 12 equal flares and shell body 11, and said air inlet connects first air blast 13; The top margin of inside and outside housing 11,12 is along connecting as one mutually; The base of inner housing 12 is along the first flanging portion 14 that is provided with outward housing 11, and the lower edge of shell body 11 is provided with towards 15, the second flanging portions 15 of the second flanging portion of inner housing 12 and the first flanging portion, 14 folded gaps and forms fluidic channel 16; The angle of the tangential direction of fluidic channel 16 opening parts and the sidewall of inner housing 12 is the 0-30 degree; Preferable selection is that the angle of the sidewall of fluidic channel and inner housing is 15 degree, and the width of fluidic channel opening part is 1-5mm, and the preferable width that is chosen as the fluidic channel opening part is 1.5mm.Said cooking fume filter 200 is arranged in the inner housing 12, and the distance between the bottom surface of shell body 11 and smoke exhaust ventilator housing 100 bases is 0-100mm.
Fig. 3 is second kind of example structure sketch map of jet flow type smoke exhaust ventilator; As shown in Figure 3; The difference of present embodiment and embodiment one is to have increased by one second fluidic generator 30; Second fluidic generator 30 is identical with first fluidic generator, 10 structures, and the air inlet that is installed on the shell body of top and second fluidic generator of first fluidic generator 10 connects second air blast 18.
According to second kind of embodiment the operation principle and the course of work of jet flow type smoke exhaust ventilator are introduced below.As shown in Figure 4; First air blast 13 is carried first air-flow 21 in the inner chamber of first fluidic generator 11, when the air pressure in first fluidic generator, 11 inner chambers reached certain pressure, gases at high pressure just went out to form first jet-stream wind 22 from fluidic channel 16 high velocity jet of first fluidic generator 11; After jet-stream wind 22 ejections; Near inner surface fluidic channel 16 jets (inner housing inwall) has formed the Kang Enda surface, and according to the Kang Enda principle, first jet-stream wind 22 produces Coanda effect from fluidic channel 16 jets ejection back; Can change original flow direction; Changing into along the Kang Enda surface is the inwall flow at high speed forward of fluidic generator, is in the gas that fluidic generator centers on and flows forward together thereby drive, and the soot gas 23 that is positioned at the fluidic generator below is produced the effect of suction.Coanda effect refers to fluid (current or air-flow) to be had and leaves original flow direction, changes the tendency that the body surface along with protrusion flows into.When having mantle friction between the body surface that fluid and it are flow through, flow rate of fluid can slow down, as long as the curvature of body surface is not too big, according to the Bernoulli's theorem in the hydrodynamics, the slowing down of flow velocity can cause fluid to be attracted on the body surface flowing.Simply say, run into curved surface exactly after, current or air-flow can change the original direction of motion, then along with curved surface flows.Simultaneously; Second air blast 18 is also carried second air-flow 25 in the inner chamber of second fluidic generator 30; Like this, under the acting in conjunction of two stage jet generator 10 and 30, soot gas 23 filters the back through filter 200 and is being swept along by jet air-flow 22 together from smoke discharging pipe 20 discharges.
The present invention compared with prior art, its advantage is very outstanding.
At first, it has solved blade and fan fully by the soot gas pollution problems, its impeller and motor fully with the soot gas isolation, really accomplished to exempt from all the life to unpick and wash blade and blower fan;
The second, overall construction design is succinctly reasonable, and each functional part was both relatively independent, can pass through simple assembling integrator again, is fit to large-scale batch process the in batches, also is fit to the installation and maintenance and the use of average family;
The 3rd, tubaeform fluidic generator has made full use of Reynolds coefficient and the Kang Enda effect in the hydrodynamics, has guaranteed stability and directionality in the Gas Jet flow process, and has produced very strong adsorption effect.
The 4th; Tubaeform fluidic generator collection jet flow generating apparatus and soot gas gathering unit are one; And single-piece frame independence moulding relatively; It can guarantee effective generation of the jet-stream wind of high-voltage high-speed, also makes Gas Jet passage of the present invention and soot gas passage begin just to overlap from the lower port near lampblack absorber simultaneously, and this has improved the suction effect to the soot gas that is in the lampblack absorber below greatly; This structure also makes the inner surface of the whole gas channel of fluidic generator be under the absorption and protection of jet-stream wind simultaneously, has reduced the pollution of soot gas to jet transmitter inwall.
The 5th, under the acting in conjunction of two stage jet generator, soot gas is being arranged to the exhaust passage through absorption fully with after filtering swimmingly, thereby guarantees that actual suction effect can reach practical level fully.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of under enlightenment of the present invention, making, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.

Claims (10)

1. lampblack absorber fluidic generator; It is characterized in that comprising shell body and the inner housing that is arranged in the shell body; Equal flare of said shell body and inner housing and shell body are provided with air inlet, and the top margin of inside and outside housing is along connecting as one mutually, and the base of inner housing is along the first flanging portion that is provided with the outward housing; The lower edge of shell body is provided with the second flanging portion towards inner housing, and the folded gap of the second flanging portion and the first flanging portion forms fluidic channel.
2. lampblack absorber fluidic generator as claimed in claim 1 is characterized in that the tangential direction of said fluidic channel opening part and the angle of inner housing sidewall are the 0-30 degree.
3. lampblack absorber fluidic generator as claimed in claim 2 is characterized in that the tangential direction of said fluidic channel opening part and the angle of inner housing sidewall are 15 degree.
4. lampblack absorber fluidic generator as claimed in claim 1, the width that it is characterized in that said fluidic channel opening part is 1-5mm.
5. lampblack absorber fluidic generator as claimed in claim 4, the width that it is characterized in that said fluidic channel opening part is 1.5mm.
6. jet flow type smoke exhaust ventilator comprises smoke exhaust ventilator housing and cooking fume filter, and the end face of this smoke exhaust ventilator housing is provided with smoke discharging pipe; It is characterized in that being equipped with in the smoke exhaust ventilator housing first fluidic generator; Said first fluidic generator comprises shell body and the inner housing that is arranged in the shell body, and equal flare of said shell body and inner housing and shell body are provided with air inlet, and this air inlet connects first air blast; The top margin of inside and outside housing is along connecting as one mutually; The base of inner housing is along the first flanging portion that is provided with the outward housing, and the lower edge of shell body is provided with the second flanging portion towards inner housing, and the folded gap of the second flanging portion and the first flanging portion forms fluidic channel; Said cooking fume filter is arranged on the inner housing, and the distance between the bottom surface of shell body and the smoke exhaust ventilator housing base is 0-100mm.
7. jet flow type smoke exhaust ventilator as claimed in claim 6 is characterized in that the angle of sidewall of tangential direction and the inner housing of said fluidic channel opening part is the 0-30 degree.
8. jet flow type smoke exhaust ventilator as claimed in claim 7 is characterized in that the angle of sidewall of tangential direction and the inner housing of said fluidic channel opening part is 15 degree.
9. jet flow type smoke exhaust ventilator as claimed in claim 6, the width that it is characterized in that said fluidic channel opening part is 1-5mm.
10. jet flow type smoke exhaust ventilator as claimed in claim 6; It is characterized in that also comprising second fluidic generator identical with the first fluidic generator structure; Said second fluidic generator is arranged on the top of first fluidic generator, and the air inlet on the shell body of second fluidic generator connects second air blast.
CN2010102318576A 2010-07-21 2010-07-21 Jet flow type smoke exhaust ventilator and fluidic generator thereof CN101858613B (en)

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Application Number Priority Date Filing Date Title
CN2010102318576A CN101858613B (en) 2010-07-21 2010-07-21 Jet flow type smoke exhaust ventilator and fluidic generator thereof

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Application Number Priority Date Filing Date Title
CN2010102318576A CN101858613B (en) 2010-07-21 2010-07-21 Jet flow type smoke exhaust ventilator and fluidic generator thereof

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CN101858613B true CN101858613B (en) 2012-04-25

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CN103453545A (en) * 2012-06-05 2013-12-18 孙长杰 Smoke exhaust barrel with jet technology for hot-blast stove
CN102692044B (en) * 2012-06-21 2014-04-16 林小冬 Oil smoke suction and exhaust equipment
CN104329711A (en) * 2014-11-28 2015-02-04 苟仲武 Energy-saving low-noise smoke exhausting device and method
CN106287880A (en) * 2016-08-16 2017-01-04 美的集团股份有限公司 Lampblack absorber
CN106352385A (en) * 2016-11-25 2017-01-25 广东威灵电机制造有限公司 Smoke exhaust ventilator
CN106765381B (en) * 2016-11-25 2018-12-04 广东威灵电机制造有限公司 Smoke exhaust ventilator
CN106482190B (en) * 2016-11-25 2019-06-07 广东威灵电机制造有限公司 Smoke exhaust ventilator
WO2018094788A1 (en) * 2016-11-25 2018-05-31 广东威灵电机制造有限公司 Range hood
CN106439979B (en) * 2016-11-25 2018-12-11 广东威灵电机制造有限公司 Smoke exhaust ventilator
WO2018094784A1 (en) * 2016-11-25 2018-05-31 广东威灵电机制造有限公司 Range hood
CN106402977B (en) * 2016-11-25 2019-04-12 广东威灵电机制造有限公司 Smoke exhaust ventilator
CN106765388B (en) * 2016-12-20 2019-07-02 美的集团股份有限公司 Fume extractor
CN106765389B (en) * 2016-12-20 2019-07-02 美的集团股份有限公司 Fume extractor
CN106949513A (en) * 2017-04-11 2017-07-14 广东美的智美科技有限公司 Spray nozzle device and fume extractor for forming jet
CN107062331B (en) * 2017-04-11 2019-08-30 广东美的白色家电技术创新中心有限公司 Fume extractor
CN111121122A (en) * 2018-10-31 2020-05-08 宁波方太厨具有限公司 Air blowing and sucking device and range hood with same

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US3530784A (en) * 1968-06-03 1970-09-29 Germain Courchesne Smoke and vapor collecting hood
US4475534A (en) * 1978-11-30 1984-10-09 Moriarty Daniel J Ventilating system for kitchen stove
CN2230017Y (en) * 1995-01-12 1996-06-26 张为民 Cooking fume remover
CN2295936Y (en) * 1997-02-17 1998-10-28 许诗兵 Vacuum sucking hood
CN2457479Y (en) * 2000-12-20 2001-10-31 高胜利 Clean fume exhaust fan
CN1333446A (en) * 2000-12-13 2002-01-30 鄂严生 Vertical multi-stage air jet flow cooking fume exhauster
CN2483632Y (en) * 2001-03-14 2002-03-27 高大刚 Kitchen ventilator needing no cleaning it
CN2562102Y (en) * 2001-07-17 2003-07-23 金恒霄 Cooker hood with air jet separation layer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530784A (en) * 1968-06-03 1970-09-29 Germain Courchesne Smoke and vapor collecting hood
US4475534A (en) * 1978-11-30 1984-10-09 Moriarty Daniel J Ventilating system for kitchen stove
CN2230017Y (en) * 1995-01-12 1996-06-26 张为民 Cooking fume remover
CN2295936Y (en) * 1997-02-17 1998-10-28 许诗兵 Vacuum sucking hood
CN1333446A (en) * 2000-12-13 2002-01-30 鄂严生 Vertical multi-stage air jet flow cooking fume exhauster
CN2457479Y (en) * 2000-12-20 2001-10-31 高胜利 Clean fume exhaust fan
CN2483632Y (en) * 2001-03-14 2002-03-27 高大刚 Kitchen ventilator needing no cleaning it
CN2562102Y (en) * 2001-07-17 2003-07-23 金恒霄 Cooker hood with air jet separation layer

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