CN108151104B - Range hood capable of improving internal pressure difference - Google Patents
Range hood capable of improving internal pressure difference Download PDFInfo
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- CN108151104B CN108151104B CN201810187840.1A CN201810187840A CN108151104B CN 108151104 B CN108151104 B CN 108151104B CN 201810187840 A CN201810187840 A CN 201810187840A CN 108151104 B CN108151104 B CN 108151104B
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- 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
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Abstract
A range hood capable of improving internal pressure difference is provided with an oil fume separator and a shell, wherein the oil fume separator can separate oil fume and is installed inside the shell through motor transmission. The minimum distance between the oil fume separator and the shell is F, and F is more than or equal to 1.0mm and less than or equal to 150mm. This can improve inside pressure differential's lampblack absorber, thereby the minimum distance between its oil smoke separator and the shell oil smoke gas gets into the gap of oil smoke separator little, obtains the speed-up when making oil smoke gas get into the oil smoke separator, increases the pressure differential of oil smoke separator and external environment condition to improve this can improve inside pressure differential's lampblack absorber's smoking ability. Meanwhile, the oil fume exhauster for centrifugally separating oil fume repeatedly can prevent air containing oil fume particles from contacting with the wind wheel, and can effectively remove the oil fume particles in the oil fume exhauster.
Description
Technical Field
The invention relates to the field of range hoods, in particular to a range hood capable of improving internal pressure difference.
Background
The range hood is also called as a range hood, and is a kitchen appliance for purifying the kitchen environment. The range hood is arranged above the kitchen stove, can quickly pump away wastes burnt by the stove and oil smoke harmful to human bodies generated in the cooking process, and exhaust the wastes and the oil smoke to the outside, reduces pollution, purifies air, and has the safety guarantee effects of gas defense and explosion prevention.
WHO reports that in 430 thousands of people WHO died due to kitchen air pollution in 2012 worldwide, the patient suffered from stroke accounts for 34%, chronic obstructive pulmonary disease and ischemic heart disease account for 22% and 26%, respectively, and died from lung cancer accounts for about 6%.
In the prior art, the range hood has three forms of top suction, side suction and lower discharge. The three range hoods only rotate by the wind wheel to generate negative pressure inside the range hood body, so that high-pressure oil fume gas in the external environment flows into the range hood body and is separated from oil fume particles of a centrifugal body generated by the wind wheel, and the oil fume suction capacity is lower by only depending on the negative pressure generated by the wind wheel. And the wind wheel directly contacts with the oil smoke, and oil smoke particles can be adhered to the wind wheel after long-term use, so that the wind wheel works under load, and the working efficiency of the wind wheel is seriously influenced, thereby reducing the whole smoking effect.
Therefore, aiming at the defects in the prior art, the range hood capable of improving the internal pressure difference is necessary to solve the defects in the prior art.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provides the range hood capable of improving the internal pressure difference. The range hood capable of improving the internal pressure difference can improve the pressure difference between the interior of the range hood and the external environment, thereby improving the smoking capacity.
The above object of the present invention is achieved by the following technical means.
The utility model provides a can improve lampblack absorber of internal pressure difference, be provided with the oil smoke separator and the shell that can separate the oil smoke, the oil smoke separator passes through motor drive and installs inside the shell.
The minimum distance between the oil fume separator and the shell is F, and F is more than or equal to 1.0mm and less than or equal to 150mm.
Preferably, above-mentioned oil smoke separator is provided with many concentric tubes, rotation axis and a plurality of eaves portion structure of axis coincidence, the rotation axis respectively with the fixed connection of many concentric tubes's one end, a plurality of eaves portion structures are around setting up and fixed mounting in the other end of the concentric tube that corresponds, the rotation axis is connected with motor drive.
Preferably, the casing is provided with a plurality of casing air inlets and annular sheets matched with the plurality of casing air inlets, the annular sheets are fixedly installed or integrally connected to the corresponding inner surface of the casing and located at the edges of the casing air inlets, and the annular sheets correspond to the casing air inlets one to one.
Preferably, the minimum distance between the brim structure and the annular sheet is D, and D is more than or equal to 2mm and less than or equal to 100mm.
Preferably, the included angle formed by the annular sheet and the tangent line of the edge of the corresponding shell air inlet is C, and C is more than or equal to 20 degrees and less than or equal to 70 degrees.
The height of the air inlet of the shell is defined as H Air inlet of shell Width L of the air inlet of the housing Air inlet of shell And H is not more than 2mm Air inlet of shell ≤20mm,10mm≤L Air inlet of shell ≤200mm。
The distance between the air inlets of two adjacent shells is J, and J is more than or equal to 5mm and less than or equal to 50mm.
Preferably, the surface area of the outer shell is S Outer cover The total area of the air inlet of the housing is S Air inlet of outer shell ，0.1S Outer cover ≤S Air inlet of outer shell Less than or equal to 09.5S.
The side, facing the ground when the oil fume separator is installed, of the oil fume separator is defined as the lower part, and concentric pipes from the middle shaft to the outside are sequentially defined as a 1 st concentric pipe, an i th concentric pipe, an i.
Height of the 1 st concentric tube is defined as H 1 The height of the ith concentric tube is determined as H i Said, n-1 concentric tube height is defined as H n-1 The height of the n-th concentric tube is defined as H n ，H 1 Has the maximum value of H n The value of (c) is minimal.
Preferably, 1.1H mentioned above n ≤H i ≤10H n And 0.5H i-1 ≤H i ≤3H i-1 。
Preferably, the concentric tubes are provided with turbulence means which are seamlessly connected around the ends of one end of the concentric tubes.
Preferably, the concentric tube is formed by a line segment formed by a plurality of broken lines surrounding the middle shaft for one circle, and the intersection position of two adjacent line segments on the inner wall of the concentric tube is a vortex generation position.
Preferably, the oil smoke separator is further provided with a vortex generating device set, the vortex generating device set is fixedly installed on the outer surface of the concentric tube and surrounds the joint of the eaves structure and the concentric tube, and the vortex generating device set is installed on the upper surface of the eaves structure.
Each vortex generating device group consists of one or more vortex generating sub-devices in the same eaves structure.
Preferably, the eaves structure is provided with a plurality of through holes.
Preferably, the range hood main body is further provided with an air draft assembly and an oil collecting device, the air draft assembly is fixedly mounted inside the shell and located above the oil smoke separator, the air draft assembly is further connected with the air outlet, and the oil collecting device is assembled at the bottom of the shell.
Preferably, above-mentioned convulsions subassembly is provided with fan, wind wheel and spiral case, and the fan assembles inside the spiral case, and the wind wheel is connected with the fan transmission, and spiral case fixed mounting just is located the top of oil smoke separator in the inside of shell.
Preferably, the housing has a spherical structure.
The invention relates to a range hood capable of improving internal pressure difference, which is provided with an oil-smoke separator capable of separating oil-smoke and a shell, wherein the oil-smoke separator is arranged in the shell through motor transmission. The minimum distance between the oil fume separator and the shell is F, and F is larger than or equal to 1.0mm and smaller than or equal to 150mm. This can improve inside pressure differential's lampblack absorber, thereby the minimum distance between its oil smoke separator and the shell oil smoke gas gets into the gap of oil smoke separator little, obtains the speed-up when making oil smoke gas get into the oil smoke separator, increases the pressure differential of oil smoke separator and external environment condition to improve this can improve inside pressure differential's lampblack absorber's smoking ability. Meanwhile, the oil smoke ventilator capable of centrifugally separating oil smoke for multiple times can prevent air containing oil smoke particles from contacting with the wind wheel, and can effectively remove the oil smoke particles in the oil smoke ventilator.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limiting.
Fig. 1 is a schematic structural diagram of an embodiment 1 of a range hood capable of increasing an internal pressure difference according to the present invention.
Fig. 2 is a front view of the soot separator and motor of fig. 1.
Fig. 3 is a schematic view of the angle between the plane of the eave structure and the central axis.
Fig. 4 is a highly schematic view of the concentric tubes of fig. 3.
Fig. 5 is a schematic structural diagram of the housing and the oil collecting device of the present invention.
Fig. 6 is a schematic cross-sectional view of fig. 5.
Fig. 7 is an enlarged view of region Z in fig. 6.
Fig. 8 is a schematic structural diagram of an embodiment 2 of a range hood capable of increasing an internal pressure difference according to the present invention.
Fig. 9 is a simulated oil smoke gas flow diagram of the present invention.
Fig. 10 is a sectional perspective view of the soot separator.
In fig. 1 to 10, there are included:
a lampblack separator 1, a concentric tube 11, a spoiler 111, a rotating shaft 12, an eave structure 13, a through hole 131, a vortex generating device group 14, a vortex generating position 15,
The device comprises a shell 2, a shell air inlet 21, an annular sheet 22, a motor 3 and an oil collecting device 4.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1.
A range hood capable of improving internal pressure difference is provided with an oil smoke separator 1 and a shell 2 which can separate oil smoke, and the oil smoke separator 1 is installed inside the shell 2 through a motor 3 in a transmission mode, as shown in figures 1 to 7.
The minimum distance between the oil fume separator 1 and the housing 2 is F, the present embodiment is preferably 120mm, and the minimum distance F of the present invention may be any value between 1.0mm and 150mm, which is determined by actual conditions.
Any point on the oil smoke separator 1 is connected with any point of the shell 2, and the shortest line segment in all the connecting line segments is the minimum distance between the oil smoke separator 1 and the shell 2.
The housing 2 is provided with a plurality of housing air inlets 21 and a ring-shaped sheet 22 matching with the plurality of housing air inlets 21, the ring-shaped sheet 22 is integrally connected with the corresponding inner surface of the housing 2 and is located at the edge of the housing air inlets 21, the ring-shaped sheet 22 and the housing air inlets 21 are in one-to-one correspondence, the ring-shaped sheet 22 of the present invention can also be fixedly installed on the housing, and the specific implementation mode is determined by implementation conditions.
The included angle formed by the annular sheet 22 and the tangent line corresponding to the edge of the housing air inlet 21 is C, and the included angle C in the present embodiment is 60 °, and may be any angle of 20 ° to 70 °, which is determined by actual conditions.
The ring-shaped piece 22 is used to generate vortex when the oil smoke gas enters the housing 2, and also to prevent oil smoke particles from being thrown out of the external space from the housing air inlet 21 of the housing 2 when the oil smoke particles are thrown out of the oil smoke separator 1.
The height of the housing air inlet 21 is set to be H Housing air inlet 21 Width L of the housing inlet 21 Housing air inlet 21 And H is not more than 2mm Housing air inlet 21 ≤20mm,10mm≤L Housing air inlet 21 Less than or equal to 200mm. The distance between two adjacent shell air inlets 21 is determined as J, and J is more than or equal to 5mm and less than or equal to 50mm. The surface area of the housing 2 is S Outer casing 2 The total area of the housing air inlet 21 is S Housing air inlet 21 ，0.1S Outer casing 2 ≤S Housing air inlet 21 Less than or equal to 09.5S outer shell 2 。
The side, facing the ground when the oil fume separator 1 is installed, of the oil fume separator is defined as the lower side, and concentric tubes 11 from the middle shaft to the outside are sequentially defined as a 1 st concentric tube, an i th concentric tube, an i.
Height of No. 1 concentric tube is defined as H 1 Said contents of the ith concentric tube is H i Content n-1 The height of the n-th concentric tube is defined as H n ，H 1 Has the maximum value of H n Has the minimum value of 1.1H n ≤H i ≤10H n And 0.5H i-1 ≤H i ≤3H i-1 。
N =3 in the present embodiment, that is, 3 concentric tubes 11 in the present embodiment are provided. The number of concentric tubes 11 of the present invention can be any positive integer, and the set of vortex generating devices 14 can be less than or equal to any positive integer number of concentric tubes 11.
The concentric tubes 11 are provided with flow perturbation means 111, the flow perturbation means 111 being connected seamlessly around the end of one end of the concentric tubes 11.
The concentric tube 11 is formed by a line segment formed by a plurality of broken lines surrounding the middle axis for a circle, and the intersection position of two adjacent line segments on the inner wall of the concentric tube 11 is a vortex generation position 15, as shown in fig. 10. The shape of the concentric tube 11 of the invention has the function of enabling the oil smoke gas to generate vortex on the inner wall of the concentric tube 11 and improving the efficiency of removing the oil smoke.
The plane of the turbulent flow device 111 is intersected with the middle shaft and has an included angle B, and B is more than or equal to 10 degrees and less than or equal to 135 degrees.
This eaves portion structure 13 is the effect that the contained angle is with the other end of concentric tube 11 can increase the effect area that oil smoke particle and oil smoke separator 1 produced the centrifugal force, under the same rotational speed and under the same concentric tube 11 diameter, the contained angle can improve the tangential velocity that the oil smoke particle was thrown away from, under oil smoke separator 1, makes the oil smoke particle break away from oil smoke separator 1 inside, improves the separation effect of oil smoke.
The oil smoke separator 1 is further provided with a vortex generating device group 14, the vortex generating device group 14 is fixedly installed on the outer surface of the concentric tube 11 and surrounds the joint of the eaves structure 13 and the concentric tube 11, and the vortex generating device group 14 is installed on the upper surface of the eaves structure 13. Each vortex generating device group 13 is composed of one or more vortex generating sub-devices in the same eave structure 13. The eaves structure 13 of the invention is provided with a plurality of through holes 131.
The vortex generating device group 14 of the present invention is used for generating vortex for the oil smoke gas, thereby improving the oil removing capability. The through holes 131 are used for gathering large oil particles when the oil fume separator 1 rotates, and the oil particles are separated from the inside of the oil fume separator 1, so that the separation effect of the oil fume particles is greatly improved.
The cigarette machine main part still is provided with convulsions subassembly and oil collecting device 4, convulsions subassembly fixed mounting in the inside of shell 2 and be located the top of oil smoke separator 1, and the convulsions subassembly still is connected with the gas outlet, and oil collecting device 4 assembles in the bottom of shell 2. The air draft assembly is provided with a fan, a wind wheel and a volute, the fan is assembled inside the volute, the wind wheel is in transmission connection with the fan, and the volute is fixedly installed inside the shell 2 and located above the oil-smoke separator 1. The shell 2 of the invention is of a sphere structure.
The working principle of the range hood is as follows: the range hood is started, the motor 3 drives the oil fume separator 1, the wind wheel of the air draft assembly rotates simultaneously, oil fume particles are separated in seven layers in the range hood, and finally the almost clean gas is discharged through the air outlet, as shown in fig. 9. The seven-layer separation is specifically as follows:
first layer separation, inertial separation: the oil smoke enters the interior of the range hood through the shell air inlet 21 of the shell 2, and the oil smoke enters the annular sheet 22 after entering the shell air inlet 21, because of the pressure difference between the interior of the shell 2 and the external environment and the sudden change of the area of the shell air inlet 21, the air flow speed is accelerated, and the inertia momentum is relatively increased. And the oil smoke will form a very thin boundary layer around the annular sheet 22, and because the outer casing air inlet 21 of the outer casing 2 forms an included angle with the annular sheet 22, the oil smoke is forced to flow upwards and enter the oil smoke separator 1 after flowing downwards along the annular sheet 22, so that the heavier oil separates from the crude oil smoke flow field in the downward inertial motion and moves downwards to be collected in the oil collecting device 4 at the bottom of the outer casing 2, and the first inertial separation is realized.
Second layer separation, vortex separation: the oil smoke particles separated by the first layer further generate flow field separation from the downward-upward flowing flow in the direction of the annular sheet 22, and the oil smoke particles cause an unstable flow field under the flow field separation to further form a vortex. The flow field or vortex interacts with the adjacent flow field or vortex, forming a non-stop rotating flow field on the ring-shaped plate 22, and the rotating vortex reaches the maximum vortex amount. The remaining light oil smoke will not stop at the rotating vortex of the annular sheet 22 and accumulate, and when a certain weight is accumulated, the flow field will not support the weight of the oil drop, and will fall downwards or flow along the annular sheet 22 to the oil collecting device 4.
Third layer separation, centrifugal separation: the eaves structure 13 rotates following the concentric tubes 11 creating a centrifugal force which interacts with the force of attraction of the wind wheel. After the second separation, the light oil smoke of remaining part contacts the outermost end of eaves portion structure 13 earlier and gets into concentric tube 11 again when getting into concentric tube 11, and the centrifugal force of eaves portion structure 13 outermost end can leave some fluid or oil smoke particle area or block and get into concentric tube 11 inside and move outward, throws away with higher tangential velocity again, and the particle of throwing away can fall at cyclic annular piece 22, flows to oil collecting device 4 along cyclic annular piece 22 at last.
Fourth layer separation, inertial separation and centrifugal separation: after the third layer of separation, the remaining oil smoke with lighter weight is simultaneously subjected to centrifugal force and attractive force, but the relative attractive force is greater than the centrifugal force. Some of the oil smoke will flow to the adjacent eaves structure 13 through the through holes 131, and will be gathered with other oil smoke or oil smoke particles into larger oil smoke particles to flow downward due to the inertia effect, and the oil smoke particles will be thrown out at a higher tangential speed due to the centrifugal force effect and finally flow to the oil collecting device 3 along the ring-shaped pieces 22.
Fifth layer separation, cyclonic centrifugal force and secondary vortex generation of concentric tubes 11: the inner wall of the concentric tube 11 rotates to form a cyclone, the concentric tube 11 is a low-pressure area, fluid or particles in the tube move towards the wall of the tube under the action of centrifugal force, the tube wall forms a high tangential velocity, and part of oil smoke is blocked from flowing upwards. In addition, the residual oil smoke can form vortex in the vortex generating device, and the vortex generating device does not stop rotating, so that the oil smoke is captured and cannot escape from the pipeline. When the attraction force and the centrifugal force are removed, the continuously rotating secondary vortex and the oil smoke which moves at the pipe wall in a high tangent line flow downwards along the inner pipe wall to be collected in the oil collecting device 4 due to gravity.
The sixth layer is separated, the spoiler 111 is separated: the turbulence device 111 at one end of the concentric tube 11 generates flow field separation on the remaining oil smoke, and by means of the flow field separation, part of the oil smoke is blocked by instability of the flow field and does not flow upwards or capture the oil smoke by a self-rotating vortex.
Separating a seventh layer, and separating a wind wheel by centrifugal force: after the separation of the first six layers, a small amount of very light oil smoke particles are left and sucked into the wind wheel of the air draft assembly due to pressure difference, the rotating wind wheel forms centrifugal force to throw the remaining small amount of oil smoke particles onto the inner wall of the fan, and finally nearly clean gas is discharged outside through the air outlet.
This can improve inside pressure differential's lampblack absorber, thereby the minimum distance between its oil smoke separator 1 and the shell 2 oil smoke gas gets into oil smoke separator 1's gap is little, obtains the speeding when making oil smoke gas get into oil smoke separator 1, increases the pressure differential of oil smoke separator 1 and external environment to improve this can improve the smoking ability of the lampblack absorber of inside pressure differential. Meanwhile, the oil smoke ventilator capable of centrifugally separating oil smoke for multiple times can prevent air containing oil smoke particles from contacting with the wind wheel, and can effectively remove the oil smoke particles in the oil smoke ventilator.
Example 2.
A lampblack absorber that can improve internal pressure difference, as shown in fig. 8, other characteristics are the same as embodiment 1, the difference lies in: the minimum distance between the brim structure 13 and the annular piece 22 in the present invention is D, preferably 10mm, and may be any value in the range of 2mm to 100mm, depending on the actual situation.
The eaves structure 13 and the annular plate 22 of this embodiment are smaller than the minimum distance between the oil smoke separator 1 and the housing 2 of embodiment 1, that is, the gap is smaller, the speed is faster when the oil smoke gas enters the oil smoke separator 1, the pressure difference between the oil smoke separator 1 and the external environment is larger, and the smoking ability of this range hood is stronger than that of embodiment 1.
Example 3.
A can improve lampblack absorber of internal pressure difference, other characteristics are the same as embodiment 1, the difference lies in: n =4 for the present embodiment, i.e. 4 concentric tubes 11 for the present embodiment are provided.
This can improve lampblack absorber of internal pressure difference compares with embodiment 1, has increased a concentric tube 11, has also increased oil smoke separator 1 in the inside space volume of shell 2 to reduce the area of 11 air inlets of concentric tube, improve gaseous admission speed, increase the pressure differential of 11 inside and exterior spaces of concentric tube, thereby can improve the separation rate of oil smoke particle.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The utility model provides a can improve lampblack absorber of internal pressure difference which characterized in that: the range hood is provided with a range hood main body, an oil smoke separator capable of separating oil smoke and a shell, wherein the oil smoke separator is arranged in the shell through the transmission of a motor; the minimum distance between the oil fume separator and the shell is F, and F is more than or equal to 1.0mm and less than or equal to 150mm;
the oil fume separator is provided with a plurality of concentric tubes with coincident center axes, a rotating shaft and a plurality of eaves structures, the rotating shaft is fixedly connected with one end of each concentric tube, the eaves structures are arranged in a surrounding manner and fixedly installed at the other end of the corresponding concentric tube, and the rotating shaft is in transmission connection with the motor;
the concentric tube is provided with a turbulence device, and the turbulence device is connected to the tail end of one end of the concentric tube in a seamless surrounding manner;
the concentric tube is formed by a line segment consisting of a plurality of broken lines surrounding the center shaft for one circle, and the intersection position of two adjacent line segments on the inner wall of the concentric tube is a vortex generation position;
the oil fume separator is also provided with an eddy current generating device group, the eddy current generating device group is fixedly arranged on the outer surface of the concentric tube and surrounds the joint of the eaves structure and the concentric tube, and the eddy current generating device group is arranged on the upper surface of the eaves structure;
each vortex generating device group consists of one or more vortex generating sub-devices in the same cornice structure;
the eaves structure is provided with a plurality of through-holes.
2. A range hood according to claim 1, wherein said range hood further comprises: the shell is provided with a plurality of shell air inlets and the cyclic annular piece that matches with a plurality of shell air inlets, cyclic annular piece fixed mounting or integrated connection in the internal surface that the shell corresponds and be located the edge of shell air inlet, cyclic annular piece and shell air inlet one-to-one.
3. A range hood capable of improving internal pressure difference according to claim 2, wherein: the minimum distance between the eaves structure and the annular sheet is D, and D is more than or equal to 2mm and less than or equal to 100mm.
4. A range hood capable of improving internal pressure difference according to claim 3, wherein: the included angle formed by the annular sheet and the tangent line of the edge of the corresponding shell air inlet is C, and C is more than or equal to 20 degrees and less than or equal to 70 degrees.
5. A range hood capable of improving internal pressure difference according to claim 4, wherein: the height of the shell air inlet is defined as H shell air inlet, the width of the shell air inlet is L shell air inlet, the H shell air inlet is more than or equal to 2mm and less than or equal to 20mm, and the L shell air inlet is more than or equal to 10mm and less than or equal to 200mm;
setting the distance between two adjacent shell air inlets as J, wherein J is more than or equal to 5mm and less than or equal to 50mm;
the surface area of the shell is S shell, the total area of the shell air inlets is S shell air inlets, and the S shell air inlets are not less than 0.1S shell and not more than 09.5S shell.
6. A range hood according to claim 5, wherein the range hood further comprises a cover for covering the range hood, the cover comprising: defining one side of the oil fume separator, which faces the ground when the oil fume separator is installed, as a lower part, and sequentially defining concentric pipes from a middle shaft to the outside as a 1 st concentric pipe, an i concentric pipe, an n-1 concentric pipe and an n concentric pipe, wherein i is more than or equal to 2 and less than or equal to n, and n is a positive integer;
the height of the 1 st concentric pipe is determined as H1, the.. The. th concentric pipe, the height of the i th concentric pipe is determined as Hi, the.. Th, the height of the n-1 th concentric pipe is determined as Hn-1, the height of the n th concentric pipe is determined as Hn, the value of H1 is maximum, and the value of Hn is minimum;
hi is more than or equal to 1.1Hn and less than or equal to 10Hn, and Hi is more than or equal to 0.5Hi-1 and less than or equal to 3Hi-1.
7. A range hood according to claim 6, wherein the range hood further comprises: the range hood main body is also provided with an air draft assembly and an oil collecting device, the air draft assembly is fixedly arranged in the shell and positioned above the oil smoke separator, the air draft assembly is also connected with the air outlet, and the oil collecting device is assembled at the bottom of the shell;
the air draft assembly is provided with a fan, a wind wheel and a volute, the fan is assembled inside the volute, the wind wheel is in transmission connection with the fan, and the volute is fixedly installed inside the shell and located above the oil smoke separator;
the shell is of a sphere structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810187840.1A CN108151104B (en) | 2018-03-07 | 2018-03-07 | Range hood capable of improving internal pressure difference |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810187840.1A CN108151104B (en) | 2018-03-07 | 2018-03-07 | Range hood capable of improving internal pressure difference |
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| CN108151104A CN108151104A (en) | 2018-06-12 |
| CN108151104B true CN108151104B (en) | 2023-01-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8723001D0 (en) * | 1987-09-30 | 1987-11-04 | Ong Tiong Ee | Cooker hood |
| CN201003807Y (en) * | 2007-02-06 | 2008-01-09 | *** | Double vortex gas filter |
| CN107726409A (en) * | 2017-11-27 | 2018-02-23 | 佛山市云米电器科技有限公司 | A kind of high efficiency on-plane surface lampblack absorber |
| CN107726415A (en) * | 2017-11-27 | 2018-02-23 | 佛山市云米电器科技有限公司 | A kind of smoke exhaust ventilator of circulating type absorption oil smoke |
| CN107741045A (en) * | 2017-11-27 | 2018-02-27 | 佛山市云米电器科技有限公司 | A kind of lampblack absorber of band active noise reduction function |
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2018
- 2018-03-07 CN CN201810187840.1A patent/CN108151104B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8723001D0 (en) * | 1987-09-30 | 1987-11-04 | Ong Tiong Ee | Cooker hood |
| CN201003807Y (en) * | 2007-02-06 | 2008-01-09 | *** | Double vortex gas filter |
| CN107726409A (en) * | 2017-11-27 | 2018-02-23 | 佛山市云米电器科技有限公司 | A kind of high efficiency on-plane surface lampblack absorber |
| CN107726415A (en) * | 2017-11-27 | 2018-02-23 | 佛山市云米电器科技有限公司 | A kind of smoke exhaust ventilator of circulating type absorption oil smoke |
| CN107741045A (en) * | 2017-11-27 | 2018-02-27 | 佛山市云米电器科技有限公司 | A kind of lampblack absorber of band active noise reduction function |
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|---|---|
| CN108151104A (en) | 2018-06-12 |
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