CN104165399A - Rectification acceleration disc structure of range hood - Google Patents
Rectification acceleration disc structure of range hood Download PDFInfo
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- CN104165399A CN104165399A CN201410369877.8A CN201410369877A CN104165399A CN 104165399 A CN104165399 A CN 104165399A CN 201410369877 A CN201410369877 A CN 201410369877A CN 104165399 A CN104165399 A CN 104165399A
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- smoke
- range hood
- acceleration
- rectification
- acceleration dish
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Abstract
A disclosed rectification acceleration disc structure of a range hood comprises a rectification plate exactly facing to an air inlet of a smoke-collecting cover of the range hood; one side, facing to the smoke-collecting cover, of the rectification plate is provided with an acceleration disc; the acceleration disc comprises at least one side surface, and an acceleration channel for accelerating oil smoke is formed between the side surface and the smoke-collecting cover; and the sectional area of the acceleration channel from bottom to top is gradually reduced. by additionally adding the acceleration disc on the side, facing to the smoke-collecting cover, of the rectification plate, the rectification acceleration disc structure is formed, and the diameter-reducing oil-smoke acceleration channel is formed, oil smoke is divided into flows and is absorbed, and is accelerated in a diameter-reducing way, and a stable negative-pressure annular area is formed at the inner-side circumference of the rectification plate and relatively to the periphery, continuously-rising oil smoke is dynamically continuously gathered and is accelerated and absorbed into a blower fan, so that the range hood reaches the optimum maximal peripheral stable smoke gathering absorbing effect, and kitchen smell is reduced to a lowest density.
Description
Technical field
The present invention relates to a kind of range hood, especially a kind of rectification acceleration dish structure used for range hood.
Background technology
A rigid index of clean kitchen environment is smell degree, and what smell degree can be used for weighing range hood holds together cigarette smoking effect.Existing conventional range hood is arranged to form concave cavity in exhaust fume collecting hood conventionally, is provided with air inlet and screen pack on exhaust fume collecting hood, and the oil smoke that blower fan absorbs, after screen pack, enters from air inlet.This mode fume-exhausting is intuitively effective, but in the process of fume-exhausting, has not only siphoned away too much grease and condiment in pot, has increased the loss of heat energy, and returning range hood has increased the burden of oil strain and contamination.
For overcoming above-mentioned drawback, and that improves range hood holds together cigarette smoking effect, current conventional solution is, at the air inlet place of the exhaust fume collecting hood of range hood, smoke deflector is set, as the applicant's the application number Chinese patent that is 200920115928.9, a kind of range hood with smoke deflector is disclosed, the just air inlet setting to exhaust fume collecting hood and maintain predetermined spacing of smoke deflector, between smoke deflector and exhaust fume collecting hood, form the oil smoke passage passing through for oil smoke, the spacing between smoke deflector and exhaust fume collecting hood reduces gradually from outer circumferential air inlet direction; The disclosed a kind of range hood of Chinese patent that and for example the applicant's application number is 201220597117.9, the smoke deflector just the air inlet place of exhaust fume collecting hood being arranged comprises rotating left wing sheet and right flank sheet.
Above-mentioned range hood, by smoke deflector is set, divides oil smoke and inhales it, has expanded the bounds that holds together cigarette smoking, is convenient to form Venturi effect between smoke deflector and exhaust fume collecting hood, holds together oil smoke completely, is siphoned away by blower fan thereby can accelerate flowing of flue gas.But because the spacing distance each point between smoke deflector surrounding and exhaust fume collecting hood differs greatly, this makes oil smoke channel cross-section actively uncertain; And when the at once diffusion again thereupon from smoke deflector surrounding enters of oil smoke air-flow, static pressure rises sharply, it is extremely unstable that this makes the negative pressure of smoke deflector periphery hold together cigarette effect.
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 rectification acceleration dish structure used for range hood that improves border and hold together cigarette ability is provided.
The present invention solves the problems of the technologies described above first adopted technical scheme: a kind of rectification acceleration dish structure used for range hood, comprise the cowling panel that just air inlet of the exhaust fume collecting hood to range hood arranges, it is characterized in that, described cowling panel is provided with acceleration dish towards a side of exhaust fume collecting hood, described acceleration dish comprises at least one side, between described side and exhaust fume collecting hood, be formed with the accelerated passage that oil smoke is accelerated, described accelerated passage from the bottom to top sectional area dwindles gradually.
The preferred mode of accelerated passage that forms tangential undergauge is, the side of described acceleration dish from the first end that is connected with described cowling panel towards with described cowling panel away from the second end tilt to the inside gradually, easy-formation easy to process.
For improving the flow conductivity of rectification acceleration dish structure, described acceleration dish comprises relative with described exhaust fume collecting hood and has the bottom surface of certain interval, and the side of described acceleration dish is positioned at described bottom periphery, and described bottom surface is to the inner concavity caving in away from cowling panel direction.
For making rectification acceleration dish structure have the best cigarette noise reduction equalization point that holds together, the side of described acceleration dish be at least two, and each side has different angle of inclination and/or highly.
After grease separates, for avoiding remaining oil to drop onto on the kitchen range top of range hood below along the periphery of the side of acceleration dish and cowling panel, the periphery of described cowling panel is positioned at the first end outside, side of described acceleration dish, and the periphery of cowling panel upwards and is to the inside rolled up and formed thus oil-recovery tank.
Compared with prior art, the invention has the advantages that: form rectification acceleration dish structure by adding acceleration dish at cowling panel with respect to a side of exhaust fume collecting hood, form the oil smoke accelerated passage of undergauge, oil smoke shunting is absorbed, and reducing accelerates, due to the rising of dynamic pressure, the reduction of static pressure, in cowling panel inner peripheral, form a stable negative pressure ring district with respect to periphery, the oil smoke that continues to rise is dynamically constantly held together collection and the accelerated blower fan that sucks, make range hood reach best, maximum periphery is stablized and is held together cigarette smoking effect, can make kitchen smell degree be down to minimum, in addition increased the damping of air-flow, suitable damping is mated the noise reduction that can reach good with the blower fan of range hood.
Brief description of the drawings
Fig. 1 is the structural representation of first embodiment of rectification acceleration dish structure of the present invention;
Fig. 2 is the cutaway 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 is described in further detail the present invention.
Referring to Fig. 1～Fig. 3, a kind of rectification acceleration dish structure used for range hood, applied range hood includes exhaust fume collecting hood 1, offers air inlet 11 on exhaust fume collecting hood 1, just to air inlet 11 and with exhaust fume collecting hood 1 interval be provided with cowling panel 2.
Cowling panel 2 is provided with acceleration dish 3 towards a side of exhaust fume collecting hood 1, and acceleration dish 3 comprises a bottom surface 31 and is positioned at least one side 32 of bottom surface 31 peripheries, in the present embodiment, is four sides.Acceleration dish 3 covers on cowling panel 2, can be fixing by the modes such as riveted joint and cowling panel 2, and its bottom surface 31 is relative with exhaust fume collecting hood 1 and have certain gap to form certain import distance.Side 32 slopes inwardly to the second end being connected with bottom surface 31 gradually from the first end being connected with cowling panel 2, and preferred, and bottom surface 31 is the inner concavity away from cowling panel 2 direction depressions, can improve the flow conductivity of acceleration dish 3.Thus, form the accelerated passage 4 of oil smoke between the side 32 of acceleration dish 3 and exhaust fume collecting hood 1, bottom surface 31 direction (from the bottom to top) sectional areas of this accelerated passage 4 from cowling panel 2 to acceleration dish 3 dwindle gradually.
The pass of flow Q, sectional area S and fluid velocity V is, Q=SV, and under the constant prerequisite of soot gas flow, sectional area S and fluid velocity V are inversely proportional to, and thus, the sectional area of accelerated passage 4 dwindles gradually, can be accelerated through the fluid of accelerated passage 4.
The demonstration of gas gross energy total head:
wherein P
gfor total head, P is static pressure, P
bfor dynamic pressure, V is speed, and ρ is gas density, and under the constant prerequisite of soot gas total head, in the time of speedup, dynamic pressure raises, and static pressure reduces, and forms stable negative pressure ring district.
When oil smoke is subject to rectification and attached wall while being directed to cowling panel 2 periphery, because accelerated passage 4 is tangential undergauge, oil smoke is connected the blower fan of continuous acceleration from air inlet 11 inspiration range hoods.Due to the rising of dynamic pressure, the reduction of static pressure, in cowling panel 2 inner peripheral, formed a stable negative pressure ring district with respect to periphery, the oil smoke that continues to rise is dynamically constantly held together collection and the accelerated blower fan that sucks.Thereby rectification acceleration dish structure can make range hood reach best, maximum periphery to stablize and hold together cigarette smoking effect, can make kitchen smell degree be down to minimum.
The accelerated passage 4 of four sides can have different acceleration, and can there be different angles of inclination each side 32 of acceleration dish 3, adjusts the parameter such as angle of inclination, the height of side 32 of side 32, can find the best cigarette noise reduction equalization point that holds together.In addition, between the accelerated passage 4 of each side, can be communicated with also and can isolate mutually.
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.The periphery of cowling panel 2 is positioned at 32 outsides, side of acceleration dish 3, and the periphery of cowling panel 2 upwards and is to the inside rolled up, and forms thus oil-recovery tank 21, after grease separates, remaining oil can coil 3 side 32 along acceleration and flow in backflash 21, to avoid oil droplet to fall on the kitchen range top of range hood below.
Claims (5)
1. a rectification acceleration dish structure used for range hood, comprise the cowling panel (2) that just air inlet (11) of the exhaust fume collecting hood to range hood (1) arranges, it is characterized in that, described cowling panel (2) is provided with acceleration dish (3) towards a side of exhaust fume collecting hood (1), described acceleration dish (3) comprises at least one side (32), between described side (32) and exhaust fume collecting hood (1), be formed with the accelerated passage (4) that oil smoke is accelerated, described accelerated passage (4) from the bottom to top sectional area dwindles gradually.
2. rectification acceleration dish structure used for range hood as claimed in claim 1, it is characterized in that, the side (32) of described acceleration dish (3) from the first end that is connected with described cowling panel (2) towards with described cowling panel (2) away from the second end tilt to the inside gradually.
3. rectification acceleration dish structure used for range hood as claimed in claim 1 or 2, it is characterized in that, described acceleration dish (3) comprises relative with described exhaust fume collecting hood (1) and has a bottom surface (31) of certain interval, the side (32) of described acceleration dish (3) is positioned at described bottom surface (31) periphery, and described bottom surface (31) are to the inner concavity away from cowling panel (2) direction depression.
4. rectification acceleration dish structure used for range hood as claimed in claim 2, is characterized in that, the side (32) of described acceleration dish (3) is at least two, and each side (32) have different angles of inclination and/or height.
5. rectification acceleration dish structure used for range hood as claimed in claim 1 or 2, it is characterized in that, the periphery of described cowling panel (2) is positioned at the first end outside, side (32) of described acceleration dish (3), and the periphery of cowling panel (2) upwards and is to the inside rolled up and formed thus 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 |
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| CN104165399A true CN104165399A (en) | 2014-11-26 |
| CN104165399B CN104165399B (en) | 2016-09-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595958A (en) * | 2015-01-29 | 2015-05-06 | 广东美的厨房电器制造有限公司 | Extractor hood |
| CN104791870A (en) * | 2015-04-03 | 2015-07-22 | 九阳股份有限公司 | Efficient mute range hood |
| CN104930569A (en) * | 2015-06-03 | 2015-09-23 | 李斌 | Lampblack separating disc and processing method thereof |
| CN105674366A (en) * | 2016-03-08 | 2016-06-15 | 广东美的厨房电器制造有限公司 | Rectifying device for extractor hood and extractor hood with rectifying device |
| CN109373384A (en) * | 2018-10-26 | 2019-02-22 | 浙江欧琳生活健康科技有限公司 | A kind of kitchen ventilator |
| CN109595641A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of range hood |
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| 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 |
| CN104566575A (en) * | 2013-10-23 | 2015-04-29 | 博西华电器（江苏）有限公司 | Extractor hood |
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| EP1705430A1 (en) * | 2005-07-04 | 2006-09-27 | V-Zug AG | extracting hood with grease filter |
| EP2610555A1 (en) * | 2011-12-29 | 2013-07-03 | Indesit Company S.p.A. | Grease filter for a range hood, and related range hood |
| 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 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595958A (en) * | 2015-01-29 | 2015-05-06 | 广东美的厨房电器制造有限公司 | Extractor hood |
| CN104595958B (en) * | 2015-01-29 | 2016-09-28 | 广东美的厨房电器制造有限公司 | Range hood |
| CN104791870A (en) * | 2015-04-03 | 2015-07-22 | 九阳股份有限公司 | Efficient mute range hood |
| CN104930569A (en) * | 2015-06-03 | 2015-09-23 | 李斌 | Lampblack separating disc and processing method thereof |
| CN104930569B (en) * | 2015-06-03 | 2018-08-14 | 李斌 | A kind of oil smoke separator disk and its processing method |
| CN105674366A (en) * | 2016-03-08 | 2016-06-15 | 广东美的厨房电器制造有限公司 | Rectifying device for extractor hood and extractor hood with rectifying device |
| CN109595641A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of range hood |
| CN109595641B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN109373384A (en) * | 2018-10-26 | 2019-02-22 | 浙江欧琳生活健康科技有限公司 | A kind of kitchen ventilator |
| 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 |
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|---|---|
| CN104165399B (en) | 2016-09-28 |
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