CN104165399B - A kind of rectification acceleration dish structure used for range hood - Google Patents
A kind of rectification acceleration dish structure used for range hood Download PDFInfo
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- CN104165399B CN104165399B CN201410369877.8A CN201410369877A CN104165399B CN 104165399 B CN104165399 B CN 104165399B CN 201410369877 A CN201410369877 A CN 201410369877A CN 104165399 B CN104165399 B CN 104165399B
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- acceleration dish
- cowling panel
- fume collecting
- exhaust fume
- range hood
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Abstract
The invention discloses a kind of rectification acceleration dish structure used for range hood, including the cowling panel just air inlet of the exhaust fume collecting hood of range hood arranged, cowling panel is provided with acceleration dish towards the side of exhaust fume collecting hood, acceleration dish includes at least one side, being formed with the accelerated passage accelerating oil smoke between side and exhaust fume collecting hood, accelerated passage sectional area from the bottom to top is gradually reduced.Rectification acceleration dish structure is formed by adding acceleration dish at cowling panel relative to the side of exhaust fume collecting hood, form the oil smoke accelerated passage of undergauge, oil smoke shunting is absorbed, and reducing accelerates, in cowling panel inner peripheral, define a stable negative pressure ring region relative to periphery, the oil smoke continuing to rise the most constantly is held together collection and the accelerated blower fan that sucks, and makes range hood reach optimal, maximum periphery and stably holds together cigarette smoking effect, kitchen odor degree can be made to be down to minimum.
Description
Technical field
The present invention relates to a kind of range hood, a kind of rectification acceleration dish structure used for range hood.
Background technology
One rigid index of clean kitchen environment is i.e. abnormal smells from the patient degree, and abnormal smells from the patient degree can be used to weigh the cigarette that holds together of range hood and inhales
Cigarette effect.Existing conventional range hood is usually disposed as in exhaust fume collecting hood forming concave cavity, exhaust fume collecting hood is provided with into
Air port and drainage screen, the oil smoke that blower fan absorbs, after drainage screen, enters from air inlet.This mode fume-exhausting is directly perceived
Effectively, but during fume-exhausting, not only siphon away oils and fats too much in pot and flavoring agent, add the loss of heat energy,
Return range hood and add the burden of oil strain and contamination.
For overcoming above-mentioned drawback, and improve range hood hold together cigarette smoking effect, the most conventional solution is to inhale
The air inlet of the exhaust fume collecting hood of lampblack absorber arranges smoke deflector, such as the China of the Application No. 200920115928.9 of the applicant
Patent, discloses the range hood of a kind of band smoke deflector, and the air inlet of exhaust fume collecting hood is just arranged and maintains pre-by smoke deflector
Fixed spacing, forms the oil smoke passage passed through for oil smoke, between smoke deflector and exhaust fume collecting hood between smoke deflector and exhaust fume collecting hood
Spacing is gradually reduced from outer circumference air inlet direction；And for example the China of the Application No. 201220597117.9 of the applicant is specially
The disclosed a kind of range hood of profit, the smoke deflector just arranged the air inlet of exhaust fume collecting hood includes rotating left wing sheet and the right side
Fin.
Above-mentioned range hood, by arranging smoke deflector, divides oil smoke and inhales it, expands the bounds of cigarette smoking,
It is easy between smoke deflector and exhaust fume collecting hood form Venturi effect, holds together oil smoke completely, the flowing of flue gas can be accelerated thus by wind
Machine siphons away.But, owing to the spacing distance each point between smoke deflector surrounding and exhaust fume collecting hood differs greatly, this makes oil smoke lead to
Cross section, road is the most uncertain；And, when the diffusion the most at once after smoke deflector surrounding enters of oil smoke air-flow, static pressure rises sharply,
This makes the negative pressure of smoke deflector periphery hold together cigarette effect extremely unstable.
Summary of the invention
The technical problem to be solved is the problem existed for above-mentioned prior art, it is provided that a kind of border of improving is held together
The rectification acceleration dish structure used for range hood of cigarette ability.
The present invention solves first technical scheme that above-mentioned technical problem used: a kind of rectification acceleration dish used for range hood
Structure, including the cowling panel just arranged the air inlet of the exhaust fume collecting hood of range hood, it is characterised in that described cowling panel court
Be provided with acceleration dish to the side of exhaust fume collecting hood, described acceleration dish includes the end that is relative with described exhaust fume collecting hood and that have certain interval
Face and at least one be positioned at the side of described bottom periphery, described bottom surface is in the indent near cowling panel direction depression
Shape, is formed with the accelerated passage accelerating oil smoke, described accelerated passage cross section from the bottom to top between described side and exhaust fume collecting hood
Amass and be gradually reduced.
The preferred mode of accelerated passage forming tangential undergauge is, the side of described acceleration dish is from being connected with described cowling panel
First end towards with described cowling panel away from the second end the most inwardly roll tiltedly, easy-formation easy to process.
Optimal holding together cigarette noise reduction equilibrium point for making rectification acceleration dish structure have, the side of described acceleration dish is at least two
Individual, each side has different angles of inclination and/or height.
After oils and fats separates, for avoiding the oil of remnants can drop onto fume-exhausting along the periphery of the side of acceleration dish and cowling panel
On the kitchen range top below machine, the periphery of described cowling panel is positioned at outside side first end of described acceleration dish, and cowling panel
Periphery upwards and is consequently formed oil-recovery tank to inner side volume.
Compared with prior art, it is an advantage of the current invention that: by adding acceleration dish at cowling panel relative to the side of exhaust fume collecting hood
Form rectification acceleration dish structure, form the oil smoke accelerated passage of undergauge, oil smoke shunting is absorbed, and reducing accelerates, by
In rising, the reduction of static pressure of dynamic pressure, in cowling panel inner peripheral, define a stable negative pressure ring relative to periphery
District, the oil smoke continuing to rise the most constantly is held together collection and accelerated is sucked blower fan, make range hood reach optimal,
Maximum periphery stably holds together cigarette smoking effect, kitchen odor degree can be made to be down to minimum；In addition the damping of air-flow is added, suitable
When damping mate, with the blower fan of range hood, the noise reduction that can reach good.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the rectification acceleration dish structure of the present invention；
Fig. 2 is the sectional view of the rectification acceleration dish structure of Fig. 1；
Fig. 3 is the decomposition texture schematic diagram of the rectification acceleration dish structure of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Seeing Fig. 1～Fig. 3, a kind of rectification acceleration dish structure used for range hood, the range hood applied includes exhaust fume collecting hood
1, exhaust fume collecting hood 1 offers air inlet 11, just to air inlet 11 and and exhaust fume collecting hood 1 interval be provided with cowling panel 2.
Cowling panel 2 is provided with acceleration dish 3 towards the side of exhaust fume collecting hood 1, and acceleration dish 3 includes a bottom surface 31 and is positioned at the end
At least one side 32 of face 31 periphery, in the present embodiment, is four sides.Acceleration dish 3 covers at cowling panel 2
On, can be fixed by the modes such as riveting and cowling panel 2, its bottom surface 31 relative with exhaust fume collecting hood 1 and have certain between
Gap is to form certain import distance.Side 32 from the first end being connected with cowling panel 2 to second be connected with bottom surface 31
End gradually slopes inwardly, and preferably, bottom surface 31, in the inner concavity near cowling panel 2 direction depression, can be improved
The flow conductivity of acceleration dish 3.Thus, between side 32 and the exhaust fume collecting hood 1 of acceleration dish 3, form the accelerated passage 4 of oil smoke,
This accelerated passage 4 is gradually reduced from direction, bottom surface 31 (from the bottom to top) sectional area of cowling panel 2 to acceleration dish 3.
Flow Q, sectional area S with the relation of fluid velocity V be, Q=SV, on the premise of soot gas flow is constant,
Sectional area S is inversely proportional to fluid velocity V, and thus, the sectional area of accelerated passage 4 is gradually reduced, then through accelerated passage
The fluid of 4 can be accelerated.
Gas gross energy total head is demonstrated:Wherein PgFor total head, P is static pressure, PbIt is
Pressure, V is speed, and ρ is gas density, and on the premise of soot gas total head is constant, when speedup, dynamic pressure raises,
Then static pressure reduces, and forms stable negative pressure ring region.
When by rectification, attached wall is directed to cowling panel 2 periphery to oil smoke, owing to accelerated passage 4 is tangential undergauge, oil smoke quilt
Connect the blower fan constantly accelerated from air inlet 11 inspiration range hood.Due to rising, the reduction of static pressure of dynamic pressure,
Cowling panel 2 inner peripheral, defining a stable negative pressure ring region relative to periphery, the oil smoke continuing to rise is by dynamically
Constantly hold together collection and accelerated suction blower fan.Thus, rectification acceleration dish structure can make range hood reach optimal, maximum
Periphery stably hold together cigarette smoking effect, kitchen odor degree can be made to be down to minimum.
The accelerated passage 4 of four sides can have each side 32 of different acceleration, i.e. acceleration dish 3 can have not
With angle of inclination, adjust the parameter such as height of the angle of inclination of side 32, side 32, can find and optimal hold together cigarette
Noise reduction equilibrium point.Also can be mutually isolated additionally, can connect between the accelerated passage 4 of each side.
One end being connected with cowling panel 2 of cowling panel 2 and side 32 is preferred, consistent with the radian of bottom surface 31.Rectification
The periphery of plate 2 is positioned at outside the side 32 of acceleration dish 3, and the periphery of cowling panel 2 upwards and is rolled up, thus to inner side
Forming oil-recovery tank 21, after oils and fats separates, remaining oil can flow in backflash 21 along the side 32 of acceleration dish 3,
To avoid oil droplet to fall on the kitchen range top below range hood.
Claims (4)
1. a rectification acceleration dish structure used for range hood, including just air inlet (11) to the exhaust fume collecting hood (1) of range hood
The cowling panel (2) arranged, it is characterised in that described cowling panel (2) is provided with acceleration dish (3), institute towards the side of exhaust fume collecting hood (1)
State acceleration dish (3) include relative with described exhaust fume collecting hood (1) and that there is certain interval bottom surface (31) and at least one be positioned at institute
Stating the side (32) of bottom surface (31) periphery, described bottom surface (31) are in the inner concavity near cowling panel (2) direction depression, described side
The accelerated passage (4) that oil smoke is accelerated, described accelerated passage (4) cross section from the bottom to top it is formed with between face (32) and exhaust fume collecting hood (1)
Amass and be gradually reduced.
Rectification acceleration dish structure used for range hood the most as claimed in claim 1, it is characterised in that described acceleration dish (3)
Side (32) from be connected with described cowling panel (2) first end towards with described cowling panel (2) away from the second end the most inside
Roll tiltedly.
Rectification acceleration dish structure used for range hood the most as claimed in claim 2, it is characterised in that described acceleration dish (3)
Side (32) be at least two, each side (32) have different angles of inclination and/or height.
Rectification acceleration dish structure used for range hood the most as claimed in claim 2, it is characterised in that described cowling panel (2)
Periphery be positioned at outside side (32) first end of described acceleration dish (3), and the periphery of cowling panel (2) upwards and to inner side roll up
It is consequently formed oil-recovery tank (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369877.8A CN104165399B (en) | 2014-07-25 | 2014-07-25 | A kind of rectification acceleration dish structure used for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369877.8A CN104165399B (en) | 2014-07-25 | 2014-07-25 | A kind of rectification acceleration dish structure used for range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104165399A CN104165399A (en) | 2014-11-26 |
| CN104165399B true CN104165399B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410369877.8A Active CN104165399B (en) | 2014-07-25 | 2014-07-25 | A kind of rectification acceleration dish structure used for range hood |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595958B (en) * | 2015-01-29 | 2016-09-28 | 广东美的厨房电器制造有限公司 | Range hood |
| CN104791870B (en) * | 2015-04-03 | 2017-06-06 | 九阳股份有限公司 | A kind of efficiently Jing Yin lampblack absorber |
| CN104930569B (en) * | 2015-06-03 | 2018-08-14 | 李斌 | A kind of oil smoke separator disk and its processing method |
| CN105674366B (en) * | 2016-03-08 | 2019-01-22 | 广东美的厨房电器制造有限公司 | Fairing for range hood and the range hood with it |
| CN109595641B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN109373384B (en) * | 2018-10-26 | 2024-05-14 | 浙江欧琳生活健康科技有限公司 | Fume exhaust fan |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1705430B1 (en) * | 2005-07-04 | 2016-09-21 | V-Zug AG | Extracting hood with grease filter |
| EP2610555B1 (en) * | 2011-12-29 | 2016-12-14 | Indesit Company S.p.A. | Hood with a grease filter |
| CN202868812U (en) * | 2012-09-26 | 2013-04-10 | 浙江帅康电气股份有限公司 | Oil-leakage-prevention side suction type range hood |
| CN203052775U (en) * | 2012-11-13 | 2013-07-10 | 宁波方太厨具有限公司 | Range hood |
| CN104566575B (en) * | 2013-10-23 | 2019-01-25 | 博西华电器（江苏）有限公司 | Range hood |
| CN103697511B (en) * | 2013-11-30 | 2015-05-13 | 宁波方太厨具有限公司 | Diffusion drainage device of range hood |
| CN103697513B (en) * | 2013-11-30 | 2018-10-02 | 宁波方太厨具有限公司 | A kind of range hood with deflector |
| CN204006220U (en) * | 2014-07-25 | 2014-12-10 | 宁波方太厨具有限公司 | A kind of rectification acceleration dish structure used for range hood |
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2014
- 2014-07-25 CN CN201410369877.8A patent/CN104165399B/en active Active
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| Publication number | Publication date |
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| CN104165399A (en) | 2014-11-26 |
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