CN102954514B - Smoke exhaust ventilator and tornado generator thereof - Google Patents
Smoke exhaust ventilator and tornado generator thereof Download PDFInfo
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- CN102954514B CN102954514B CN201110253595.8A CN201110253595A CN102954514B CN 102954514 B CN102954514 B CN 102954514B CN 201110253595 A CN201110253595 A CN 201110253595A CN 102954514 B CN102954514 B CN 102954514B
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- jet
- impingement portion
- smoke exhaust
- tubular column
- open tubular
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Abstract
The present invention proposes a kind of smoke exhaust ventilator and tornado generator thereof.The smoke exhaust ventilator that the present invention proposes includes blower fan system and the air inlet being connected with this blower fan system, also includes tornado generator, for jointly guiding the flow direction of air-flow with described blower fan system, and then produces the tornado air-flow flowing to described air inlet；Described tornado generator includes open tubular column body and the first jet-impingement portion, and described first jet-impingement portion is arranged on the inwall of described open tubular column body；Described first jet-impingement portion, for the inwall jet-stream wind of described open tubular column body.So, owing to tornado air-flow can be produced, make smoke exhaust ventilator that the suction of oil smoke to be dramatically increased, thus fumes escaping can be reduced, promote oil smoke and absorb effect.Additionally, due to tornado effect can be produced, thus the experience of user can be promoted.
Description
[technical field]
The present invention relates to smoke exhaust ventilator field.
[background technology]
Range hood, also known as smoke exhaust ventilator, is a kind of kitchen appliance purifying kitchen environment.It is arranged on the top of cooking stove in kitchen,
The harmful oil smoke produced in the refuse that can be burnt by cooking stove and cooking process is taken away rapidly, outside discharge chamber, reduces indoor
Pollute, purify the air of a room, and have gas defence, explosion-proof safety guarantee effect.
How to reduce fumes escaping, and then promote oil smoke absorption effect, be the most all the wide concerned technology in one, this area
A difficult problem, it directly concerns the smoke exhaust ventilator competitiveness of product in market.For above-mentioned technical barrier, prior art occur in that each
Plant solution: as, install the curtain stopping fumes escaping additional；For another example, blower fan system power etc. is improved.But, these are existing
Solution or effect undesirable, or noise can be brought to strengthen, the power consumption new problem such as increase, all cannot be fundamentally
Solve above-mentioned technical barrier.
Unless there are sufficient evidence support, prior art the most described here is not an admission that these prior aries are in this Shen
Before the applying date please known in the those of ordinary skill of the field that the invention relates to.
[summary of the invention]
Present invention is primarily targeted at proposition one and can substantially reduce fumes escaping, and then promote the smoke pumping of oil smoke absorption effect
Machine technology solution.
The smoke exhaust ventilator that the present invention proposes includes blower fan system and the air inlet being connected with this blower fan system, also includes that tornado produces
Generating apparatus, for jointly guiding the flow direction of air-flow with described blower fan system, and then produces the tornado air-flow flowing to described air inlet；
Described tornado generator includes open tubular column body and the first jet-impingement portion；Described first jet-impingement portion, for described
The inwall jet-stream wind of open tubular column body.So, owing to tornado air-flow can be produced, make smoke exhaust ventilator that the suction of oil smoke to be shown
Write and increase, thus fumes escaping can be reduced, promote oil smoke and absorb effect.Additionally, due to tornado effect can be produced, thus
The experience of user can be promoted.
Optionally, described open tubular column body be bottom surface be the cylinder of annulus.
Optionally, the height h of described open tubular column body is not more than 0.6m.This span is that applicant is by substantial amounts of test
Obtaining, when taking this span, tornado draught effect is preferable.
Optionally, the inner circle radius r of described annulus is not more than 0.5m.This span is that applicant is obtained by substantial amounts of test
, when taking this span, tornado draught effect is preferable.
Optionally, the thickness t of described annulus is not more than 0.3m.This span is that applicant passes through substantial amounts of test acquisition,
When taking this span, tornado draught effect is preferable.
Optionally, the direction of described first jet-impingement portion jet-stream wind, tangent with the inwall of adjacent open tubular column body.So,
Tornado draught effect is preferable.
Optionally, the direction of described first jet-impingement portion jet-stream wind, hang down mutually with the longitudinal extension direction of described open tubular column body
Directly.So, tornado draught effect is preferable.
Optionally, the quantity in described first jet-impingement portion is at least two, and is uniformly distributed in the inwall of described open tubular column body
On.
Optionally, the quantity in described first jet-impingement portion is four.
Optionally, described tornado generator also includes the second jet-impingement portion；Described second jet-impingement portion, is used for spraying
Air-flow, and then between the upper bottom surface and the edge of described air inlet of described open tubular column body, form gas curtain.Applicant is by a large amount of
Test find, between upper bottom surface and the border area of described air inlet of described open tubular column body, be spaced a distance ratio directly
Contact, tornado draught effect is more preferable.Further, in upper bottom surface and the edge district of described air inlet of described open tubular column body
In the case of being spaced a distance between territory, the second jet-impingement portion is set, and then forms described gas curtain, it is to avoid air-flow is from described
Interval region between upper bottom surface and the border area of described air inlet of open tubular column body flows into, and then promotes tornado air-flow effect
Really.
Optionally, the bottom in described second jet-impingement portion is connected with the upper bottom surface of described open tubular column body；Described second air-flow
The top of ejection section is connected to the edge of described air inlet.
Optionally, the quantity in described second jet-impingement portion is at least three and not more than 12, and is uniformly distributed in described sky
On the upper bottom surface of stem body, the top in described each second jet-impingement portion is arranged around described air inlet.
Optionally, the quantity in described second jet-impingement portion is four.
Optionally, the direction of the air-flow of described each second jet-impingement portion injection, it is and refers to clockwise or counterclockwise
To the second adjacent jet-impingement portion.The direction of the air-flow of described each second jet-impingement portion injection is identical, contributes to reducing noise.
Optionally, the air-flow that described first jet-impingement portion and the second jet-impingement portion are sprayed in the horizontal direction move towards identical,
It is clockwise or counterclockwise.So, contribute to reducing noise, promote tornado draught effect further.
Optionally, described tornado generator also includes the 3rd jet-impingement portion；Described 3rd jet-impingement portion, is used for spraying
Air-flow, and then between bottom surface and the stove panel of described open tubular column body, form gas curtain.So, both contributed to preventing spout
Pathogenic wind stream suffers from externalities, also helps and is separated with oil smoke by pure air, promotes oil smoke and absorbs efficiency.
Optionally, described 3rd jet-impingement portion is arranged on the bottom surface of described open tubular column body.
Optionally, described 3rd jet-impingement portion uses integrally formed structure with described open tubular column body；Described first jet-impingement
Portion uses same air supply system supply with described 3rd jet-impingement portion.So, contributing to promoting manufacture efficiency, saving is manufactured into
This.
Optionally, the air-flow that described first jet-impingement portion and the 3rd jet-impingement portion are sprayed in the horizontal direction move towards identical,
It is clockwise or counterclockwise.So, contribute to reducing noise, promote tornado draught effect further.
Optionally, the inwall of described open tubular column body is streamlined.So, contribute to promoting tornado draught effect further.
Optionally, described first jet-impingement portion, the longitudinal extension direction along described open tubular column body is arranged at described hollow cylinder
On the inwall in portion；Described first jet-impingement portion is column structure；Described first jet-impingement portion includes end face, described end face
On be provided with jet-impingement hole；Described jet-impingement hole, for the inwall jet-stream wind of described open tubular column body；Described first
Jet-impingement portion also includes the curved surface extending to the outer of described end face from the interior walls be smooth of described open tubular column body.So, described
The flow path of the first institute of jet-impingement portion jet-stream wind is the most smooth, contributes to reducing noise, promotes tornado air-flow further
Effect.
The present invention also proposes a kind of tornado generator, and this tornado generator is applied to the smoke exhaust ventilator described in any of the above；
This tornado generator, for jointly guiding the flow direction of air-flow with the blower fan system of described smoke exhaust ventilator, and then generation flows to institute
State the tornado air-flow of the air inlet of smoke exhaust ventilator.
[accompanying drawing explanation]
The present invention is only schematically illustrated and explains by the following drawings, not delimit the scope of the invention, wherein:
Fig. 1 is the structural representation of the present invention a kind of tornado generator embodiment；
Fig. 2 is the running status schematic diagram of the embodiment of tornado generator shown in Fig. 1；
Fig. 3 is the top view of the embodiment of tornado generator shown in Fig. 1；
Fig. 4 is the upward view of the embodiment of tornado generator shown in Fig. 1；
Fig. 5 is the structural representation of the present invention a kind of smoke exhaust ventilator embodiment；
Fig. 6 is another structural representation of the present invention a kind of smoke exhaust ventilator embodiment.
About the explanation of reference in figure:
1-tornado generator, 2-open tubular column body, 3-the first jet-impingement portion, 4-the second jet-impingement portion, 5-the 3rd gas
Stream ejection section.
[detailed description of the invention]
For making the purpose of the present invention, scheme and beneficial effect of greater clarity, below in conjunction with the accompanying drawings with preferred embodiment to this
Invention is described further.Firstly the need of being explained, " tornado " that the present invention is said simply means to class on mode of appearance
The air-flow that the rotation of the tornado being similar to nature rises, rather than the tornado of nature truly.
A kind of smoke exhaust ventilator embodiment that the present invention proposes, as it can be seen in figures 5 and 6, this smoke exhaust ventilator includes blower fan system and difference
Two air inlets being connected with this blower fan system.Further, this smoke exhaust ventilator also includes being respectively arranged under two air inlets
Two tornado generators 1 of side.Tornado generator 1, for jointly guiding the flow direction of air-flow with blower fan system, and then
Produce the tornado air-flow flowing to the air inlet above this tornado generator 1.Specifically, blower fan system is at air inlet
Near zone produces negative pressuren zone, and then guides air-flow to flow to air inlet；Tornado generator 1 is then used for producing rotary wind
Road, and make described negative pressuren zone move down along this air channel, close to oil smoke sources such as cookers.Visible, although to employ " tornado generation dress
Put " this expression, but tornado is to produce under the common effect of tornado generator 1 and blower fan system, " tornado produces
Generating apparatus " it is only the expression of an image, still it is not enough to by himself produce tornado effect completely.
The concrete structure of tornado generator 1 is Fig. 1 is to as described in 4, and tornado generator 1 includes open tubular column body 2 He
Four the first jet-impingement portions 3.Open tubular column body 2 be bottom surface be the cylinder of annulus.Four the first jet-impingement portions 3 are along hollow
The longitudinal extension direction of trunk portion 2, is evenly arranged on the inwall of open tubular column body 2.First jet-impingement portion 3, is used for
To the inwall jet-stream wind of open tubular column body 2.The direction of the first jet-impingement portion 3 jet-stream wind, with adjacent open tubular column body
The inwall of 2 is tangent.Hang down mutually in the direction of the first jet-impingement portion 3 jet-stream wind, also the longitudinal extension direction with open tubular column body 2
Directly.The longitudinal extension direction of described open tubular column body 2, is i.e. the short transverse of open tubular column body 2.Due under use state,
The longitudinal extension direction of open tubular column body 2 is perpendicular to stove panel, and therefore, the direction of the first jet-impingement portion 3 jet-stream wind is put down
Row is in stove panel.The direction of four the first jet-impingement portion 3 jet-stream winds, is clockwise.Open tubular column body 2
Highly h is 0.3m.The inner circle radius r of the bottom surface annulus of open tubular column body 2 is 0.2m.The bottom surface annulus of open tubular column body 2
Thickness t is 0.1m.The form and dimension in four the first jet-impingement portions 3 is identical.Each first jet-impingement portion 3 is all in cylinder
Structure, and include end face, this end face is provided with several jet-impingement holes.These jet-impingement holes, for described sky
The inwall jet-stream wind of stem body.Each first jet-impingement portion 3 all includes extending from the interior walls be smooth of described open tubular column body
Curved surface to the outer of described end face.Under use state, the tornado air-flow of generation, can be through the inwall institute of open tubular column body 2
The space surrounded, then flows to be positioned at the air inlet above this open tubular column body 2.
As shown in Figures 1 to 3, each tornado generator 1 the most also includes four the second jet-impingement portions 4, these four second
Jet-impingement portion 4 is uniformly distributed on the upper bottom surface of open tubular column body 2.Fig. 3 is the upper direction from the second jet-impingement portion 4
Under the top view seen.Four the second jet-impingement portions 4, are provided commonly for jet-stream wind, and then at the upper bottom surface of open tubular column body 2
And form gas curtain between the edge of corresponding air inlet.The bottom in each second jet-impingement portion 4 all with the upper end of open tubular column body 2
Face is connected；The top in each second jet-impingement portion 4 is all connected to the exhaust fume collecting hood of smoke exhaust ventilator.Four the second jet-impingement portions 4
Top place around corresponding air inlet.The direction of the air-flow of each second jet-impingement portion 4 injection, is along clockwise direction
The the second jet-impingement portion 4 being directed towards.Visible, that the first jet-impingement portion 3 and the second jet-impingement portion 4 are sprayed air-flow
Moving towards in the horizontal direction is identical, so contributes to promoting running efficiency, it helps reduce noise.Further, four
Second jet-impingement portion 4 and four the first jet-impingement portion 3 one_to_one corresponding, that it is corresponding is closed in the second jet-impingement portion 4
One jet-impingement portion 3 is arranged.For the present embodiment, four the second jet-impingement portions 4 are all in rectangular structure.
As shown in Figures 2 and 4, tornado generator 1 also includes the 3rd jet-impingement portion 5.Fig. 4 is from the 3rd jet-impingement
The upward view that the lower section in portion 5 looks up.3rd jet-impingement portion 5, for jet-stream wind, and then open tubular column body 2 times
Gas curtain is formed between bottom surface and stove panel.3rd jet-impingement portion 5 is arranged on the bottom surface of open tubular column body 2.3rd gas
Stream ejection section 5 uses integrally formed structure with open tubular column body 2.First jet-impingement portion 3 uses with the 3rd jet-impingement portion 5
Same air supply system supplies.The air-flow that 3rd jet-impingement portion 5 and the first jet-impingement portion 3 are sprayed walking in the horizontal direction
To identical, it is along clockwise direction.
Below it is only the preferred embodiments of the present invention, some technical characteristic is modified and replaces the enforcement that can also obtain other
Example.As, the bottom surface of open tubular column body may not be annulus, such as can also is that interior edge be circle, outer be the ring of regular polygon.
For another example, the air-flow of four the first jet-impingement portion injections trend in the horizontal direction, it is also possible to be counterclockwise.For another example,
The inwall of open tubular column body can also use streamlined structure.For another example, the direction of the air-flow of each second jet-impingement portion injection, also
The the second jet-impingement portion that can be in the counterclockwise direction and be directed towards.For another example, the air-flow that the 3rd jet-impingement portion is sprayed
Trend in the horizontal direction, it is also possible to be in the counterclockwise direction.For another example, the second jet-impingement portion can also use cylinder
Or other structures.For another example, it is also possible to use integrally formed technique to make with open tubular column body in the second jet-impingement portion.For another example,
First jet-impingement portion and the second jet-impingement portion may be used without same air supply system supply.
Needing annotated, the present invention should not be construed as being limited to embodiment described above, but should be by
It is interpreted as covering the claims in the present invention and combines description disclosure and all possible performance that determines.Therefore, all
It is the content without departing from technical solution of the present invention, any simple modification of above example being made according to the technical spirit of the present invention,
Equivalent variations and modification, belong to the protection domain of technical solution of the present invention.
Claims (21)
1. a smoke exhaust ventilator, including blower fan system and the air inlet that is connected with this blower fan system, it is characterised in that:
Also include tornado generator (1), for jointly guiding the flow direction of air-flow with described blower fan system, and then produce the flow direction
The tornado air-flow of described air inlet；
Described tornado generator (1) includes open tubular column body (2) and the first jet-impingement portion (3)；
Described first jet-impingement portion (3), for the inwall jet-stream wind of described open tubular column body (2)；
Described tornado generator (1) also includes the second jet-impingement portion (4)；
Described second jet-impingement portion (4), for jet-stream wind, and then at the upper bottom surface of described open tubular column body (2) with described
Gas curtain is formed between the edge of air inlet.
Smoke exhaust ventilator the most according to claim 1, it is characterised in that:
Described open tubular column body (2) be bottom surface be the cylinder of annulus.
Smoke exhaust ventilator the most according to claim 2, it is characterised in that:
The height h of described open tubular column body (2) is not more than 0.6m.
Smoke exhaust ventilator the most according to claim 2, it is characterised in that:
The inner circle radius r of described annulus is not more than 0.5m.
Smoke exhaust ventilator the most according to claim 2, it is characterised in that:
The thickness t of described annulus is not more than 0.3m.
Smoke exhaust ventilator the most according to claim 1, it is characterised in that:
The direction of described first jet-impingement portion (3) jet-stream wind, tangent with the inwall of adjacent open tubular column body (2).
Smoke exhaust ventilator the most according to claim 6, it is characterised in that:
The direction of described first jet-impingement portion (3) jet-stream wind, with the longitudinal extension direction phase of described open tubular column body (2)
Vertically.
Smoke exhaust ventilator the most according to claim 1, it is characterised in that:
The quantity in described first jet-impingement portion (3) is at least two, and is uniformly distributed in the interior of described open tubular column body (2)
On wall.
Smoke exhaust ventilator the most according to claim 8, it is characterised in that:
The quantity in described first jet-impingement portion (3) is four.
Smoke exhaust ventilator the most according to claim 1, it is characterised in that:
The bottom in described second jet-impingement portion (4) is connected with the upper bottom surface of described open tubular column body (2)；
The top in described second jet-impingement portion (4) is connected to the edge of described air inlet.
11. smoke exhaust ventilators according to claim 1, it is characterised in that:
The quantity in described second jet-impingement portion (4) is at least three and not more than 12, and is uniformly distributed in described open tubular column
On the upper bottom surface of body (2)；
The top in each described second jet-impingement portion (4) is arranged around described air inlet.
12. smoke exhaust ventilators according to claim 11, it is characterised in that:
The quantity in described second jet-impingement portion (4) is four.
13. smoke exhaust ventilators according to claim 11, it is characterised in that:
The direction of the air-flow that each described second jet-impingement portion (4) sprays, is and points to phase clockwise or counterclockwise
The second adjacent jet-impingement portion (4).
14. smoke exhaust ventilators according to claim 1, it is characterised in that:
The air-flow that described first jet-impingement portion (3) and the second jet-impingement portion (4) are sprayed in the horizontal direction move towards phase
With, it is clockwise or counterclockwise.
15. smoke exhaust ventilators according to claim 1, it is characterised in that:
The inwall of described open tubular column body (2) is streamlined.
16. smoke exhaust ventilators according to claim 1, it is characterised in that:
Described first jet-impingement portion (3), the longitudinal extension direction along described open tubular column body (2) is arranged at described hollow cylinder
On the inwall in portion (2)；
Described first jet-impingement portion (3) is in column structure；
Described first jet-impingement portion (3) includes end face, and described end face is provided with jet-impingement hole；
Described jet-impingement hole, for the inwall jet-stream wind of described open tubular column body (2)；
Described first jet-impingement portion (3) also includes extending to described end face from the interior walls be smooth of described open tubular column body (2)
The curved surface of outer.
17. 1 kinds of smoke exhaust ventilators, including blower fan system and the air inlet that is connected with this blower fan system, it is characterised in that:
Also include tornado generator (1), for jointly guiding the flow direction of air-flow with described blower fan system, and then produce the flow direction
The tornado air-flow of described air inlet；
Described tornado generator (1) includes open tubular column body (2) and the first jet-impingement portion (3)；
Described first jet-impingement portion (3), for the inwall jet-stream wind of described open tubular column body (2)；Described tornado produces
Generating apparatus (1) also includes the 3rd jet-impingement portion (5)；
Described 3rd jet-impingement portion (5), for jet-stream wind, and then at the bottom surface of described open tubular column body (2) and kitchen range
Gas curtain is formed between panel.
18. smoke exhaust ventilators according to claim 17, it is characterised in that:
Described 3rd jet-impingement portion (5) is arranged on the bottom surface of described open tubular column body (2).
19. smoke exhaust ventilators according to claim 18, it is characterised in that:
Described 3rd jet-impingement portion (5) and described open tubular column body (2) use integrally formed structure；
Described first jet-impingement portion (3) and described 3rd jet-impingement portion (5) use same air supply system to supply.
20. smoke exhaust ventilators according to claim 17, it is characterised in that:
The air-flow that described first jet-impingement portion (3) and the 3rd jet-impingement portion (5) are sprayed in the horizontal direction move towards phase
With, it is clockwise or counterclockwise.
21. 1 kinds of tornado generators (1), this tornado generator (1) is applied to described in any of the above item claim
Smoke exhaust ventilator；This tornado generator (1), for jointly guiding the flow direction of air-flow with the blower fan system of described smoke exhaust ventilator,
And then produce the tornado air-flow of the air inlet flowing to described smoke exhaust ventilator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253595.8A CN102954514B (en) | 2011-08-27 | 2011-08-27 | Smoke exhaust ventilator and tornado generator thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253595.8A CN102954514B (en) | 2011-08-27 | 2011-08-27 | Smoke exhaust ventilator and tornado generator thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102954514A CN102954514A (en) | 2013-03-06 |
| CN102954514B true CN102954514B (en) | 2016-08-17 |
Family
ID=47763666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110253595.8A Active CN102954514B (en) | 2011-08-27 | 2011-08-27 | Smoke exhaust ventilator and tornado generator thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102954514B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439964B (en) * | 2016-09-30 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of range hood |
| CN107036139A (en) * | 2017-04-13 | 2017-08-11 | 武汉理工大学 | A kind of rotating jet intelligent fume exhauster |
| CN107044676A (en) * | 2017-05-05 | 2017-08-15 | 武汉理工大学 | A kind of composite purification type smoke exhaust ventilator based on tornado effect |
| CN110529907A (en) * | 2019-09-29 | 2019-12-03 | 上海纯米电子科技有限公司 | Kitchen fume extracting device |
| CN110529909B (en) * | 2019-09-29 | 2021-10-08 | 纯米科技(上海)股份有限公司 | Oil fume purifying equipment |
| CN112303671B (en) * | 2020-11-19 | 2022-03-15 | 珠海格力电器股份有限公司 | Gas stove, gas stove range hood assembly and linkage control method thereof |
| KR102469350B1 (en) * | 2020-12-21 | 2022-11-23 | 주식회사 포스코 | Dust collecting equipment and dust collecting method |
| CN113199293A (en) * | 2021-04-28 | 2021-08-03 | 天津大学 | Method and device for reducing oil mist aerosol leakage of numerical control machine tool |
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|---|---|---|---|---|
| JPH04309734A (en) * | 1991-04-08 | 1992-11-02 | Japan Air Curtain Corp | Artificial tornado type local air discharging device |
| CN1178004A (en) * | 1995-03-08 | 1998-04-01 | 山田善洋 | Exhaust system for kitchens |
| FR2848479A1 (en) * | 2002-12-13 | 2004-06-18 | Thierry Pibernat | Convection suction hood to remove fumes or moisture from cooking or industrial processes, uses updraft created by heating walls of flue to replace motor driven fan when temperature is high enough |
| EP2088377A2 (en) * | 2006-07-27 | 2009-08-12 | Electrolux Professional S.P.A. | Improvement in the ventilation arrangement of a fume extractor hood |
| WO2010066422A2 (en) * | 2008-12-10 | 2010-06-17 | Electrolux Home Products Corporation N.V. | Suction hood |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04309734A (en) * | 1991-04-08 | 1992-11-02 | Japan Air Curtain Corp | Artificial tornado type local air discharging device |
| CN1178004A (en) * | 1995-03-08 | 1998-04-01 | 山田善洋 | Exhaust system for kitchens |
| FR2848479A1 (en) * | 2002-12-13 | 2004-06-18 | Thierry Pibernat | Convection suction hood to remove fumes or moisture from cooking or industrial processes, uses updraft created by heating walls of flue to replace motor driven fan when temperature is high enough |
| EP2088377A2 (en) * | 2006-07-27 | 2009-08-12 | Electrolux Professional S.P.A. | Improvement in the ventilation arrangement of a fume extractor hood |
| WO2010066422A2 (en) * | 2008-12-10 | 2010-06-17 | Electrolux Home Products Corporation N.V. | Suction hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102954514A (en) | 2013-03-06 |
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