CN108980947B - Fume exhaust fan - Google Patents
Fume exhaust fan Download PDFInfo
- Publication number
- CN108980947B CN108980947B CN201811134271.0A CN201811134271A CN108980947B CN 108980947 B CN108980947 B CN 108980947B CN 201811134271 A CN201811134271 A CN 201811134271A CN 108980947 B CN108980947 B CN 108980947B
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- Prior art keywords
- fan
- cavity
- range hood
- air inlet
- fume
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- 239000003517 fume Substances 0.000 title claims abstract description 65
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 9
- 239000000779 smoke Substances 0.000 abstract description 84
- 230000000694 effects Effects 0.000 abstract description 34
- 238000001914 filtration Methods 0.000 abstract description 7
- 235000019504 cigarettes Nutrition 0.000 abstract description 4
- 230000008676 import Effects 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 description 29
- 238000000034 method Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000010411 cooking Methods 0.000 description 4
- 239000006233 lamp black Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000241796 Christia obcordata Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a range hood which comprises a fan cover, a fume collecting hood, a splitter plate and a central guide plate. The fan housing defines the fan chamber, and the fan intracavity is equipped with the fan, and collection petticoat pipe is located the below of fan housing, and just defines the collection cigarette chamber that communicates with the fan chamber, and collection cigarette chamber has the oil smoke import of collection oil smoke, and the flow distribution plate is established in the fan chamber in order to divide into two at least branch chambeies that distribute along the air inlet direction of fan with the fan chamber, and the fan is established in one of them branch chambeies, and the central guide plate is established in the branch intracavity that is equipped with the fan, and the central guide plate is located the fan, and the below of flow distribution plate. According to the range hood provided by the embodiment of the invention, the flow dividing plate and the central flow guiding plate are arranged in the fan cavity, so that the vortex loss in the fan cavity is reduced, the working efficiency of the range hood is improved, the filtering effect on the oil smoke air flow is improved, and the working noise of the range hood is reduced.
Description
Technical Field
The invention relates to the field of kitchen appliances, in particular to a range hood.
Background
The smoke exhaust ventilator is basically in a popular state in the market at present, and the requirements of the important cities on the smoke exhaust ventilator are developing to high-end, personalized and intelligent. The main key components affecting the actual effect of the smoke exhaust ventilator comprise a fan, an air duct, a suction port structure and the like. The arrangement modes of fans at different installation positions, the appearance of the structural shape of a runner and the requirements of manufacturing manufacturability can lead to the unavoidable uneven distribution state of air in the flowing process, influence the speed and pressure distribution, further lead to the uneven distribution state of a flow field near the suction port of the range hood, and are not beneficial to the fume suction effect. Therefore, the problem of local air flow loss can be solved through reasonable flow channel structural design, and the effect of oil smoke extraction is improved.
In order to obtain better fume exhausting effect, the fume exhausting machine in the current market increasingly develops towards the trend of large air quantity and high back pressure, so that the negative pressure coverage range of a fume sucking port is improved, and meanwhile, the fume phenomenon possibly caused by high resistance of a fume exhausting pipeline of a high-rise building is overcome. According to market research, when the air volume of the range hood is increased, although a better oil smoke removing effect is obtained, the problem of noise increase is also brought about. Especially for the range hood with the oil smoke suction port structure arranged on the side face, the noise problem is obvious. The improvement of the air quantity can increase the flow speed of the air flow besides the noise problem, when the air flows through the suction port and enters the flow channel of the smoke exhaust ventilator, the air flow direction is suddenly changed, so that local vortex is generated, even a countercurrent phenomenon exists, the air quantity is influenced opposite to the air flow direction, the additional pneumatic noise is generated, and the flow channel efficiency is reduced. In the worst state, although the rotation speed of the fan increases, the air flow rate of the range hood does not increase due to the presence of the local vortex, but noise increases instead. The noise level of the smoke exhaust ventilator is directly related to the air quantity, and the larger the air quantity is, the larger the noise is, and the worse the user experience is. Pneumatic noise can be restrained through reasonable structural design, and comfort when using smoke ventilator is improved.
The types of the smoke extractor in the current market are various, and the smoke extractor can be roughly divided into a top suction type, a near suction type, an integrated type and the like according to structural forms. For the top suction type cigarette machine, in order to strengthen the effect of gathering cigarettes, mainly cover in the top of frying pan, the complete machine degree of depth is about 515mm, hits the head easily in the in-process of cooking, influences user experience. In order to expand the negative pressure area and improve the fume exhaust effect, some manufacturers generally set butterfly wing plates. For the near-suction type range hood, the depth of the whole range hood is generally smaller than that of the top suction type range hood, but in order to solve the problem of insufficient smoke collecting area at the top, the inclined surface at the lower side of the range hood is close to a cooking appliance, so that the range hood occupies a cooking space, and the operation experience of a user is also influenced. For the integrated range hood, although the structure is compact, the cooking space cannot be occupied, but zero leakage of oil smoke is difficult to achieve for a large amount of oil smoke in a quick-frying state, if the air quantity is increased to achieve the effect of zero leakage of the oil smoke, the problem of noise rise is brought, and the consumption of fuel gas is aggravated by the excessive air quantity.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the range hood, which has better oil absorption effect and smaller noise.
According to an embodiment of the invention, a range hood comprises: the fan cover is used for limiting a fan cavity, and a fan is arranged in the fan cavity; the fume collecting hood is positioned below the fan cover, and defines a fume collecting cavity communicated with the fan cavity, and the fume collecting cavity is provided with a fume inlet for collecting fume; the flow dividing plate is arranged in the fan cavity to divide the fan cavity into at least two sub-cavities distributed along the air inlet direction of the fan, and the fan is arranged in one sub-cavity; the central guide plate is arranged in the split cavity provided with the fan, and the central guide plate is positioned below the fan and the split plate.
According to the range hood provided by the embodiment of the invention, the flow dividing plate and the central flow guiding plate are arranged in the fan cavity, so that the vortex loss in the fan cavity is reduced, the working efficiency of the range hood is improved, the filtering effect on the oil smoke air flow is improved, and the working noise of the range hood is reduced.
In some embodiments, the splitter plate is disposed corresponding to an air inlet of the fan, the splitter plate comprising: the two mounting strips are oppositely arranged, each mounting strip is connected with the side wall of the fan cover and extends towards the direction away from the fume collecting hood; the grid bars are multiple, two ends of each grid bar are respectively connected with the two mounting bars, and the grid bars are distributed at intervals along the extending direction of the mounting bars.
In some specific embodiments, each grid strip is provided with at least one flange extending away from the fan.
In some embodiments, the spacing between two adjacent grid bars is d, and d satisfies the relationship: d is more than or equal to 1mm and less than or equal to 50mm, the width of each grid strip is b, and the relation is satisfied: b is more than or equal to 5mm and less than or equal to 15mm.
In some embodiments, one end of the central deflector is connected to the inner wall surface of the fan housing, the central deflector extends obliquely upward in a backward direction, and an included angle between the central deflector and a vertical surface along an up-down direction of the fan housing is a1, where a1 satisfies the relationship: a1 is more than or equal to 10 degrees and less than or equal to 90 degrees.
In some alternative embodiments, a plurality of grid holes are arranged on the central guide plate at intervals along the left-right direction of the fan cover, and the end of the central guide plate, which is adjacent to the end connected with the inner wall surface of the fan cover.
In some alternative embodiments, a gap is provided between the other end of the central baffle and the diverter plate.
In some embodiments, an air inlet grille is arranged on the wall surface, far away from the fan cover, of the fume collecting hood, the oil fume inlet is arranged on the air inlet grille, the air inlet grille is arranged in a downward inclined mode in a backward direction, and an included angle between the air inlet grille and a horizontal plane is a2, wherein a2 meets the following formula: a2 is more than or equal to 0 degree and less than or equal to 45 degrees.
In some embodiments, the front end of the smoke collecting cavity is provided with a front protruding cavity protruding forwards relative to the fan cavity, the upper wall surface of the front protruding cavity is connected with the front side wall of the fan cavity, and the lower wall surface of the front protruding cavity is connected with the air inlet grille.
In some embodiments, the upper wall surface of the front protruding cavity and the central guide plate are arranged in a coplanar manner, and the connection section of the lower wall surface of the front protruding cavity and the air inlet grille is formed into an upwardly protruding cambered surface.
In some embodiments, the smoke collecting cavity is communicated with the fan cavity through a communication port, and the smoke collecting cavity comprises a middle sub-cavity, a left sub-cavity and a right sub-cavity, wherein the middle sub-cavity is arranged right opposite to the communication port, the left sub-cavity is positioned on the left side of the middle sub-cavity, and the right sub-cavity is positioned on the right side of the middle sub-cavity.
In some specific embodiments, the air inlet grille is provided with a first air-permeable hole corresponding to the middle sub-cavity, a second air-permeable hole corresponding to the right sub-cavity and a third air-permeable hole corresponding to the left sub-cavity, and the first air-permeable hole, the second air-permeable hole and the third air-permeable hole all extend along the front-back direction of the air inlet grille.
In some embodiments, an included angle a3 is formed between the central axis of the fan and a horizontal line in the front-rear direction, and a3 satisfies the relation: a3 is more than or equal to 0 DEG and less than or equal to 60 deg.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is an overall external view of a range hood according to an embodiment of the present invention.
Fig. 2 is an internal structural view of the range hood according to the embodiment of the present invention.
Fig. 3 is a view illustrating an internal structure of another direction of the range hood according to the embodiment of the present invention.
Fig. 4 is a schematic flow diagram of a lampblack absorber according to an embodiment of the invention.
Fig. 5 is an enlarged view of a partial structure of a range hood according to an embodiment of the present invention.
Fig. 6 is a simulated airflow diagram of a prior art range hood.
Fig. 7 is an air flow simulation diagram of the range hood of the present invention.
Reference numerals:
a smoke exhaust ventilator 1,
Fume collecting hood 10,
A smoke collecting cavity 110,
A protrusion cavity 111,
A fume inlet 120,
A first ventilation hole 121, a second ventilation hole 122, a third ventilation hole 123,
An air inlet grille 130,
A fan cover 20,
Fan chamber 210, sub-chamber 211,
A splitter plate 30,
Grid strips 310,
A central baffle 40,
Grid holes 410,
Fan 50, air inlet 510,
And an oil collection cup 60.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
A range hood according to an embodiment of the present invention will be described with reference to fig. 1 to 7.
As shown in fig. 1 to 3, the range hood 1 according to the embodiment of the present invention includes a fan housing 20, a smoke collecting hood 10, a flow dividing plate 30, and a center baffle 40. The fan housing 20 defines a fan cavity 210, a fan 50 is arranged in the fan cavity 210, the fume collecting hood 10 is located below the fan housing 20, and defines a fume collecting cavity 110 communicated with the fan cavity 210, the fume collecting cavity 110 is provided with a fume inlet 120 for collecting fume, the splitter plate 30 is arranged in the fan cavity 210 to divide the fan cavity 210 into at least two sub-cavities 211 distributed along the air inlet direction of the fan 50, the fan 50 is arranged in one of the sub-cavities 211, the central guide plate 40 is arranged in the sub-cavity 211 provided with the fan 50, and the central guide plate 40 is located below the fan 50 and the splitter plate 30.
It can be appreciated that after the oil smoke enters the smoke collecting cavity 110 from the oil smoke inlet 120, the oil smoke flows into the fan cavity 210 under the guiding action of the central guide plate 40, and the fan 50 and the central guide plate 40 are in the same cavity 211 as the fan cavity 210 is divided into at least two cavities 211 by the dividing plate 30, so that most of the oil smoke enters the cavity 211 without the fan 50 under the guiding action of the central guide plate 40 (as shown in fig. 4), so that most of the oil smoke enters the fan 50 along the air inlet direction of the fan 50, a great deal of oil smoke is discharged by the fan 50, and the phenomenon that the oil smoke is accumulated in the fan cavity 210 due to the increase of vortex generated by the oil smoke near the volute of the fan 50 is avoided, and the oil smoke absorption efficiency of the range hood 1 is reduced. The central baffle 40 may also increase the flow area of the oil smoke flow to some extent, thereby improving the oil absorbing effect of the range hood 1.
In addition, before entering the fan cavity 210, the oil smoke air flow contacts the central guide plate 40, and the oil smoke air flow can be condensed by the central guide plate 40, so that the condensed oil droplets fall down, and the filtering effect of the oil smoke air flow by the range hood 1 is effectively improved. Meanwhile, before entering the fan 50, the oil smoke air flow needs to pass through the flow dividing plate 30, so that the flow dividing plate 30 can further condense the oil smoke air flow, the filtering effect on the oil smoke air flow is improved, and noise generated by rotation of the fan 50 can be attenuated to a certain extent.
According to the range hood 1 provided by the embodiment of the invention, the flow dividing plate 30 and the central flow guiding plate 40 are arranged in the fan cavity 210, so that the eddy current loss in the fan cavity 210 is reduced, the working efficiency of the range hood 1 is improved, the filtering effect on the oil smoke air flow is improved, and the working noise of the range hood 1 is reduced.
In some embodiments, as shown in fig. 3, the splitter plate 30 is disposed corresponding to the air inlet 510 of the blower 50, and the splitter plate 30 includes two mounting bars (not shown) and a plurality of grid bars 310, where the two mounting bars are disposed opposite to each other, each of the two mounting bars is connected to a sidewall of the blower housing 20 and extends in a direction away from the fume collecting hood 10, two ends of each of the grid bars 310 are respectively connected to the two mounting bars, and the plurality of grid bars 310 are distributed at intervals along an extending direction of the mounting bars.
It can be appreciated that the splitter plate 30 adopts a grid structure and corresponds to the air inlet 510 of the fan 50, so that the oil smoke flow entering the fan 50 is relatively uniform and stable, the output airflow flow of the fan 50 is ensured to a certain extent, and the oil smoke extraction effect of the range hood 1 is ensured. Meanwhile, the flow dividing plate 30 adopts a grid structure to increase the contact area between the flow dividing plate 30 and the oil smoke air flow, so that the condensation effect of the flow dividing plate 30 on the oil smoke air flow is improved, and the filtering effect of the range hood 1 is improved. In addition, the grill structure is also advantageous in absorbing noise generated when the blower 50 rotates, thereby reducing the operating noise of the range hood 1.
In some embodiments, each of the grating strips 310 is provided with at least one flange extending away from the fan 50. Thereby, the condensing effect of the splitter plate 30 on the lampblack airflow is improved, and the absorbing effect of the fan 50 on the working noise is ensured. Advantageously, each grid strip 310 has flanges on both sides not connected to the connecting strip, extending away from the fan 50.
In some embodiments, the spacing of two adjacent grid strips 310 is d, d satisfying the relationship: d is more than or equal to 1mm and less than or equal to 50mm, the width of each grid strip 310 is b, and the relation is satisfied: b is more than or equal to 5mm and less than or equal to 15mm. It will be appreciated that the width of each grating strip 310 and the distance between two adjacent grating strips 310 will affect the condensation, wind-equalizing and noise-reducing effects of the splitter plate 30, so that the distance between two adjacent grating strips 310 is controlled to be 1mm-50mm, and the width of each grating strip 310 is controlled to be 5mm-15mm, so that the splitter plate 30 can be ensured to have better condensation, wind-equalizing and noise-reducing effects. Of course, in other embodiments of the present invention, the width of the grating strips 310 and the spacing between two adjacent grating strips 310 can be set according to practical needs, and are not limited to the above-mentioned ranges.
Of course, it should be appreciated that in other embodiments of the present invention, the manifold 30 may be formed in other configurations. For example, in some embodiments, the splitter plate 30 is formed as a planar plate, with the upper end surface of the splitter plate 30 being positioned below the air intake 510 of the blower 50. For example, in some embodiments, the splitter plate 30 is formed as a planar plate corresponding to the air inlet 510 of the fan 50, and air equalizing holes are uniformly distributed on the planar plate, so as to achieve the effects of equalizing and condensing the flow of the oil smoke passing through the splitter plate 30.
In some embodiments, as shown in fig. 4, one end of the central baffle 40 is connected to the inner wall surface of the fan housing 20, the central baffle 40 extends obliquely upward in the backward direction, and the central baffle 40 forms an angle a1 with the vertical surface along the up-down direction of the fan housing 20, and the relationship of a1 is satisfied: a1 is more than or equal to 10 degrees and less than or equal to 90 degrees. It will be appreciated that, according to the foregoing description, the central baffle 40 serves to guide the flow of the oil smoke to the chamber without the fan 50 in the fan chamber 210, while in the present invention, the fan 50 is located at the front side of the fan chamber 210, and the central baffle 40 is disposed to extend obliquely upward in the backward direction, so that the central baffle 40 is beneficial to guide the flow of the oil smoke to the sub-chamber 211 without the fan 50 located at the rear side, thereby reducing the vortex occurring near the volute of the fan 50 and improving the fume exhausting effect of the range hood 1.
In some alternative embodiments, as shown in fig. 5, a plurality of grid holes 410 are provided on the central baffle 40 adjacent to an end thereof connected to the inner wall surface of the fan housing 20 at intervals in the left-right direction of the fan housing 20. It will be appreciated that when the oil smoke flows into the smoke collecting cavity 110 and then flows to the fan cavity 210, most of the oil smoke flows enter the sub-cavity 211 where the fan 50 is not disposed under the action of the central baffle 40, but a small part of the oil smoke flows are accumulated at the connection between the central baffle 40 and the inner wall surface of the fan housing 20, so that local vortex flow occurs in the range hood 1, and the oil smoke sucking effect of the range hood 1 is affected. Therefore, the grill holes 410 are provided on the central baffle 40 adjacent to the end thereof connected to the inner wall surface of the fan housing 20, so that the flow of the oil smoke accumulated at the junction of the central baffle 40 and the inner wall surface of the fan housing 20 can be made to enter the sub-chamber 211 where the fan 50 is placed through the grill holes 410, thereby reducing the vortex phenomenon inside the range hood 1 and ensuring the oil smoke absorbing effect of the range hood 1.
In some alternative embodiments, the other end of the central baffle 40 is spaced from the baffle 30 by a gap. Thus, the accumulated lampblack flow at the joint of the central guide plate 40 and the flow dividing plate 30 is avoided, the local vortex phenomenon inside the range hood 1 is reduced, and the lampblack absorbing effect of the range hood 1 is ensured.
Here, the central baffle 40 may be formed as a flat plate, a cambered plate having a certain curvature, or a curved plate according to a certain bending rule, that is, the shape of the central baffle 40 is not limited to the above-described shape. The grating holes 410 may have any shape such as an elongated shape, a circular shape, an oblong shape, etc., and the specific shape of the grating holes 410 is not limited herein.
In addition, in other embodiments of the present invention, the central baffle 40 may be formed in other configurations. For example, in some embodiments, the center baffle 40 is formed as a flat plate having one end connected to the flow dividing plate 30 and the other end spaced from the inner wall surface of the fan housing 20 by a gap. For another example, in some embodiments, one end of the central baffle 40 is connected to the flow dividing plate 30, and the other end is connected to the inner wall surface of the fan housing 20, and through holes or the like are uniformly distributed in the central baffle 40.
In some embodiments, the wall surface of the fume collecting hood 10 far away from the fan cover 20 is provided with an air inlet grille 130, the air inlet grille 130 is provided with a fume inlet 120, the air inlet grille 130 is obliquely arranged downwards in the backward direction, the included angle between the air inlet grille 130 and the horizontal plane is a2, and the a2 satisfies the relation: a2 is more than or equal to 0 degree and less than or equal to 45 degrees. It can be appreciated that when the fume enters the fume collecting cavity 110 through the fume inlet 120, the fume needs to pass through the air inlet grille 130, and the air inlet grille 130 can condense the fume, so as to improve the filtering effect of the fume exhauster 1 on the fume. And the air inlet grille 130 is downwardly disposed in a rearward direction, such an inclined direction facilitates the flow of droplets generated by condensation into the oil collection cup 60 located at the rear side of the air inlet grille 130.
Of course, it should be noted that, in the embodiment of the present invention, the air inlet grill 130 may be formed as a flat plate, an arc panel, or a curved panel according to a certain bending rule. In addition, the included angle between the air inlet grille 130 and the horizontal plane is not limited to 0 ° -45 °, but can be adjusted according to practical situations.
In some embodiments, as shown in fig. 2, the front end of the smoke collecting cavity 110 has a front protruding cavity 111 protruding forward relative to the fan cavity 210, the upper wall surface of the front protruding cavity 111 is connected to the front side wall of the fan cavity 210, and the lower wall surface of the front protruding cavity 111 is connected to the air inlet grille 130. It can be appreciated that the smoke collecting cavity 110 has a front protruding cavity 111 opposite to the fan cavity 210, and the presence of the front protruding cavity 111 can raise the volume of the smoke collecting cavity 110, so as to increase the flow capacity of the smoke stream in the vicinity of the smoke inlet 120, and enhance the smoke collecting effect of the range hood 1.
In some embodiments, the upper wall surface of the front protruding cavity 111 is disposed coplanar with the central baffle 40, and the connection section between the lower wall surface of the front protruding cavity 111 and the air inlet grille 130 is formed as an upwardly convex arc surface. The upper plate surface of the front protruding cavity 111 is disposed coplanar with the central baffle 40, that is, in some embodiments, the upper wall surface of the front protruding cavity 111 may extend into the fan cavity 210 to form the central baffle 40, thereby simplifying the internal structure of the range hood 1 and reducing the production cost of the range hood 1.
It should be noted that the shape of the protrusion cavity 111 is not limited to the above shape, and the front wall surface, the upper wall surface, and the lower wall surface of the protrusion cavity 111 may be formed in a rectangular shape, an oblong shape, or any other irregular shape. Of course, in other embodiments of the present invention, the front end of the smoke collecting cavity 110 may not be provided with the front protruding cavity 111, that is, in some embodiments, the front side of the smoke collecting cavity 110 is coplanar with the front side of the fan cavity 210.
In some embodiments, the smoke collecting cavity 110 is communicated with the fan cavity 210 through a communication port, and the smoke collecting cavity 110 comprises a middle sub-cavity arranged opposite to the communication port, a left sub-cavity positioned on the left side of the middle sub-cavity, and a right sub-cavity positioned on the right side of the middle sub-cavity. It can be appreciated that the length of the smoke collecting cavity 110 is greater than the width of the fan cavity 210, so that the flow of the smoke is reduced when flowing from the smoke collecting cavity 110 to the fan cavity 210, that is, the smoke flows generate a gathering effect in the smoke collecting cavity 110.
In some specific embodiments, as shown in fig. 3, the air inlet grille 130 is provided with a first air-permeable hole 121 corresponding to the middle cavity, a second air-permeable hole 122 corresponding to the right cavity, and a third air-permeable hole 123 corresponding to the left cavity, and the first air-permeable hole 121, the second air-permeable hole 122, and the third air-permeable hole 123 extend along the front-back direction of the air inlet grille 130.
It can be appreciated that the first ventilation holes 121, the second ventilation holes 122 and the third ventilation holes 123 of the air inlet grille 130 extend along the front-rear direction of the air inlet grille 130, so that the deviation of the fume flow from the wall body in the process of being sucked can be reduced, as shown in fig. 6-7, compared with the prior art, the fume exhauster 1 in the embodiment of the invention avoids the fume adhering to the surface of the wall body in the process of sucking fume, and also reduces the fume leakage phenomenon. According to the structure of the air inlet grille 130, the hood wall surface of the fume collecting hood 10 far away from the fan 50 is provided with the third ventilation holes 123, the first ventilation holes 121 and the second ventilation holes 122 which are arranged on the left side, the middle and the right side of the fume collecting hood 10, so that the fume absorbing effect of the fume extractor 1 is greatly improved, and the first ventilation holes 121, the second ventilation holes 122 and the third ventilation holes 123 extend along the front and rear directions of the air inlet grille 130, so that the width of the fume collecting hood 10 can be reduced to a certain extent.
It should be noted that, the first ventilation holes 121, the second ventilation holes 122, and the third ventilation holes 123 may be distributed at intervals along the width direction of the fume collecting hood 10, and the lengths of the first ventilation holes 121, the second ventilation holes 122, and the third ventilation holes 123 may be the same or different.
In some embodiments, the central axis of the fan 50 has an angle a3 with the horizontal line in the front-rear direction, and a3 satisfies the relationship: a3 is more than or equal to 0 DEG and less than or equal to 60 deg. The included angle between the central axis of the blower 50 and the horizontal line in the front-rear direction determines the wind-driving effect of the blower 50 and the size of the blower cavity 210, so that the included angle between the central axis of the blower 50 and the horizontal line in the front-rear direction in the embodiment of the invention is not limited to 0 ° -60 ° and can be adjusted according to practical situations.
Examples:
as shown in fig. 1 to 5, the range hood 1 of the present embodiment includes a fan housing 20, a smoke collecting hood 10, a flow dividing plate 30, and a center baffle 40. The fan housing 20 defines a fan cavity 210, a fan 50 is arranged in the fan cavity 210, the fume collecting hood 10 is positioned below the fan housing 20, a fume collecting cavity 110 communicated with the fan cavity 210 is defined, the fume collecting cavity 110 is provided with a fume inlet 120 for collecting fume, a splitter plate 30 is arranged in the fan cavity 210 to divide the fan cavity 210 into two sub-cavities 211 distributed along the air inlet direction of the fan 50, and the fan 50 is arranged in the front side sub-cavity 211.
The splitter plate 30 corresponds to the air inlet 510 of the fan 50 and is arranged, the splitter plate 30 comprises two mounting bars and a plurality of grid bars 310, the two mounting bars are oppositely arranged, each mounting bar is connected with the side wall of the fan cover 20 and extends towards the direction away from the fume collecting hood 10, two ends of each grid bar 310 are respectively connected with the two mounting bars, and the grid bars 310 are distributed at intervals along the extending direction of the mounting bars. The two sides of each grid strip 310 not connected with the connecting strips are provided with flanges extending away from the fan 50. The spacing between two adjacent grating strips 310 is d, d satisfying the relationship: d is more than or equal to 1mm and less than or equal to 50mm, the width of each grid strip 310 is b, and the relation is satisfied: b is more than or equal to 5mm and less than or equal to 15mm.
One end of the central baffle 40 is connected to the inner wall surface of the fan housing 20, the central baffle 40 extends obliquely upward in the backward direction, and the included angle between the central baffle 40 and the vertical surface along the up-down direction of the fan housing 20 is a1, where a1 satisfies the relationship: a1 is more than or equal to 10 degrees and less than or equal to 90 degrees. A plurality of grid holes 410 are provided on the central baffle 40 adjacent to one end thereof connected to the inner wall surface of the fan housing 20 at intervals in the left-right direction of the fan housing 20, and a gap is provided between the other end of the central baffle 40 and the flow dividing plate 30.
The wall surface of the fume collecting hood 10 far away from the fan cover 20 is provided with an air inlet grille 130, the air inlet grille 130 is provided with an oil smoke inlet 120, the air inlet grille 130 is arranged in a downward inclined mode in the backward direction, the included angle between the air inlet grille 130 and the horizontal plane is a2, and the a2 meets the following relation: a2 is more than or equal to 0 degree and less than or equal to 45 degrees.
The front end of the smoke collecting cavity 110 is provided with a front protruding cavity 111 protruding forward relative to the fan cavity 210, the upper wall surface of the front protruding cavity 111 is connected with the front side wall of the fan cavity 210, and the lower wall surface of the front protruding cavity 111 is connected with the air inlet grille 130. The upper wall surface of the front protruding cavity 111 is arranged coplanar with the central guide plate 40, and the connection section of the lower wall surface of the front protruding cavity 111 and the air inlet grille 130 is formed as an upwardly convex arc surface.
The smoke collecting cavity 110 is communicated with the fan cavity 210 through a communication port, and the smoke collecting cavity 110 comprises a middle sub-cavity, a left sub-cavity and a right sub-cavity, wherein the middle sub-cavity is arranged opposite to the communication port, the left sub-cavity is positioned on the left side of the middle sub-cavity, and the right sub-cavity is positioned on the right side of the middle sub-cavity. The air inlet grille 130 is provided with a plurality of first air holes 121, second air holes 122 and third air holes 123 which are arranged corresponding to the middle sub-cavity, the right sub-cavity and the left sub-cavity, and the first air holes 121, the second air holes 122 and the third air holes 123 extend along the front and back directions of the air inlet grille 130. The first ventilation holes 121, the second ventilation holes 122, and the third ventilation holes 123 are provided at intervals in the left-right direction of the hood 10.
The first ventilation holes 121, the second ventilation holes 122 and the third ventilation holes 123 are formed in a long bar shape, the length of the second ventilation holes 122 is equal to the length of the third ventilation holes 123, and the lengths of the second ventilation holes 122 and the third ventilation holes 123 are smaller than the length of the first ventilation holes 121.
Compared with the prior art, the range hood 1 of the embodiment has the following advantages:
(1) The width is shortened by more than 15 percent compared with the top-suction type range hood 1, and the problem that the traditional top-suction type range hood 1 is easy to collide is solved;
(2) The overall size of the range hood 1 is smaller, and the oil smoke sucking and removing effect is better under the same air quantity;
(3) Noise level is lower;
(4) The oil smoke deviates from the wall body in the sucking process, so that the oil smoke is not easy to adhere to the surface of the wall body;
(5) An external lifting mechanism for assisting in gathering smoke is removed, and the structure of the range hood 1 is simplified;
(6) The triple grille design is adopted, so that the oil smoke is effectively filtered, and meanwhile, the noise suppression is facilitated;
(7) Local eddy current loss is reduced, and the working efficiency of the whole machine is improved;
(8) Increasing the flowing capability of the airflow in the area near the oil smoke inlet 120, and strengthening the smoke gathering effect;
(9) Compared with the traditional range hood 1, the flow resistance loss is greatly reduced, and the pneumatic noise is reduced.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A range hood, comprising:
the fan cover is used for limiting a fan cavity, and a fan is arranged in the fan cavity;
the fume collecting hood is positioned below the fan cover, and defines a fume collecting cavity communicated with the fan cavity, and the fume collecting cavity is provided with a fume inlet for collecting fume;
the flow dividing plate is arranged in the fan cavity to divide the fan cavity into at least two sub-cavities distributed along the air inlet direction of the fan, and the fan is arranged in one sub-cavity;
the central guide plate is arranged in the sub-cavity provided with the fan, and is positioned below the fan and the flow dividing plate;
the flow distribution plate corresponds to the air inlet of the fan and comprises:
the two mounting strips are oppositely arranged, each mounting strip is connected with the side wall of the fan cover and extends towards the direction away from the fume collecting hood;
the grid bars are multiple, two ends of each grid bar are respectively connected with the two mounting bars, and the grid bars are distributed at intervals along the extending direction of the mounting bars;
one end of the central guide plate is connected with the inner wall surface of the fan cover,
and a plurality of grid holes are formed in the central guide plate, adjacent to one end of the central guide plate, which is connected with the inner wall surface of the fan cover, and are arranged at intervals along the left-right direction of the fan cover.
2. The range hood of claim 1 wherein each of said grill strips is provided with at least one flange extending away from said blower.
3. The range hood of claim 1 wherein the spacing between two adjacent grill strips is d, d satisfying the relationship: d is more than or equal to 1mm and less than or equal to 50mm, the width of each grid strip is b, and the relation is satisfied: b is more than or equal to 5mm and less than or equal to 15mm.
4. The range hood according to claim 1, wherein the central baffle extends obliquely upward in a rearward direction, and an angle between the central baffle and a vertical plane along an up-down direction of the fan housing is a1, and a1 satisfies the relation: a1 is more than or equal to 10 degrees and less than or equal to 90 degrees.
5. The range hood of claim 1 wherein the other end of the central baffle is spaced from the splitter plate by a gap.
6. The range hood according to claim 1, wherein an air inlet grille is arranged on a wall surface of the fume collecting hood, which is far away from the fan cover, the air inlet grille is provided with the fume inlet, the air inlet grille is arranged in a downward inclined manner in a backward direction, an included angle between the air inlet grille and a horizontal plane is a2, and a2 satisfies the relation: a2 is more than or equal to 0 degree and less than or equal to 45 degrees.
7. The range hood of claim 6 wherein the front end of the fume collection chamber has a forwardly projecting chamber projecting relative to the blower chamber, the upper wall of the forwardly projecting chamber being connected to the front side wall of the blower chamber, the lower wall of the forwardly projecting chamber being connected to the air inlet grille.
8. The range hood of claim 7, wherein the upper wall surface of the front protruding cavity is disposed coplanar with the central baffle, and the connecting section of the lower wall surface of the front protruding cavity and the air inlet grille is formed as an upwardly convex arc surface.
9. The range hood of claim 6, wherein the fume collection cavity is communicated with the fan cavity through a communication port, and the fume collection cavity comprises a middle sub-cavity arranged opposite to the communication port, a left sub-cavity positioned on the left side of the middle sub-cavity, and a right sub-cavity positioned on the right side of the middle sub-cavity.
10. The range hood according to claim 9, wherein the air inlet grille is provided with a first air-permeable hole corresponding to the middle cavity, a second air-permeable hole corresponding to the right cavity and a third air-permeable hole corresponding to the left cavity, and the first air-permeable hole, the second air-permeable hole and the third air-permeable hole extend along the front-back direction of the air inlet grille.
11. The range hood according to any one of claims 1 to 10, wherein an included angle a3 is formed between the central axis of the blower and a horizontal line in the front-rear direction, and a3 satisfies the relation: a3 is more than or equal to 0 DEG and less than or equal to 60 deg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134271.0A CN108980947B (en) | 2018-09-27 | 2018-09-27 | Fume exhaust fan |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811134271.0A CN108980947B (en) | 2018-09-27 | 2018-09-27 | Fume exhaust fan |
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| CN108980947A CN108980947A (en) | 2018-12-11 |
| CN108980947B true CN108980947B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811134271.0A Active CN108980947B (en) | 2018-09-27 | 2018-09-27 | Fume exhaust fan |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514569B (en) * | 2019-07-08 | 2022-07-19 | 佛山市顺德区阿波罗环保器材有限公司 | Air duct assembly of oil smoke filter element primary filtering performance detection system |
| CN111189094B (en) * | 2020-02-25 | 2025-04-29 | 青岛海尔智能技术研发有限公司 | Fan and range hood |
| DE102021129263A1 (en) * | 2021-11-10 | 2023-05-11 | Berbel Ablufttechnik Gmbh | extractor hood |
| DE202022101494U1 (en) * | 2021-11-10 | 2022-11-03 | Berbel Ablufttechnik Gmbh | extractor hood |
| CN114811696A (en) * | 2022-05-30 | 2022-07-29 | 杭州老板电器股份有限公司 | Cooking fume remover |
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| CN101038103A (en) * | 2006-03-17 | 2007-09-19 | 安薪实业有限公司 | Auxiliary exhaust structure and method thereof |
| CN201121933Y (en) * | 2007-10-12 | 2008-09-24 | 尹协谦 | High fine purification near-suction type cooking fume exhauster |
| CN106568109A (en) * | 2016-11-11 | 2017-04-19 | 宁波方太厨具有限公司 | Noise reducing impeller and range hood applying impeller |
| CN206207517U (en) * | 2016-11-11 | 2017-05-31 | 宁波方太厨具有限公司 | A kind of noise reduction impeller and application have the range hood of the impeller |
| CN107449001A (en) * | 2017-07-31 | 2017-12-08 | 广东美的厨房电器制造有限公司 | Range hood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038103A (en) * | 2006-03-17 | 2007-09-19 | 安薪实业有限公司 | Auxiliary exhaust structure and method thereof |
| CN201121933Y (en) * | 2007-10-12 | 2008-09-24 | 尹协谦 | High fine purification near-suction type cooking fume exhauster |
| CN106568109A (en) * | 2016-11-11 | 2017-04-19 | 宁波方太厨具有限公司 | Noise reducing impeller and range hood applying impeller |
| CN206207517U (en) * | 2016-11-11 | 2017-05-31 | 宁波方太厨具有限公司 | A kind of noise reduction impeller and application have the range hood of the impeller |
| CN107449001A (en) * | 2017-07-31 | 2017-12-08 | 广东美的厨房电器制造有限公司 | Range hood |
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