CN108443923B - Non-planar range hood with oil smoke separator - Google Patents
Non-planar range hood with oil smoke separator Download PDFInfo
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- CN108443923B CN108443923B CN201810187767.8A CN201810187767A CN108443923B CN 108443923 B CN108443923 B CN 108443923B CN 201810187767 A CN201810187767 A CN 201810187767A CN 108443923 B CN108443923 B CN 108443923B
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- oil smoke
- range hood
- shell
- concentric tube
- air inlet
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- 239000000779 smoke Substances 0.000 title claims abstract description 122
- 230000005484 gravity Effects 0.000 claims abstract description 8
- 239000003517 fume Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 38
- 238000000926 separation method Methods 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 11
- 239000003921 oil Substances 0.000 description 108
- 239000007789 gas Substances 0.000 description 15
- 239000004071 soot Substances 0.000 description 9
- 239000006233 lamp black Substances 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000011044 inertial separation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
Abstract
A non-planar range hood with a range hood body, a range hood capable of separating oil smoke particles and a non-planar shell are arranged, the shell is assembled on the outer surface of the range hood body, and the range hood is assembled in the shell. The side of the range hood, which faces the ground when being installed, is defined as the lower part, the axis of the range hood is parallel to a straight line which passes through the gravity center of the range hood and is perpendicular to the horizontal plane, the shortest distance is L, the maximum width of the shell is defined as K, and L is more than or equal to 0 and less than or equal to 0.1K. The outer surface of the range hood is used as a guiding surface in the moving direction of the oil smoke, and is not used for forming a covering area for gathering the oil smoke, so that oil smoke particles can be separated from the inner part. The range hood and the oil smoke separator of the range hood compared with the prior art generate additional centrifugal force, can effectively remove oil smoke particles, prevent the oil smoke particles from entering the exhaust assembly, prevent the oil smoke particles from contacting with the wind wheel, and greatly improve the separation effect of the oil smoke particles.
Description
Technical Field
The invention relates to the field of range hoods, in particular to a non-planar range hood with a range hood separator.
Background
The fume exhaust fan is also called fume exhaust fan and is one kind of kitchen appliance for purifying kitchen environment. The range hood is arranged above the kitchen range, can rapidly pump away waste generated in combustion of the range and oil smoke harmful to human bodies in the cooking process, is discharged outdoors, reduces pollution, purifies air, and has the safety guarantee effects of gas protection and explosion prevention.
Most of the range hoods in the prior art are of planar structures so as to form a covering area for gathering oil smoke, and the range hoods can surround the oil smoke to improve the oil suction effect, but the range hoods with the appearance necessarily increase in width. And the wind wheel is directly contacted with high-concentration oil smoke gas, so that a large amount of oil stains can be accumulated on the surface of the wind wheel, and the wind wheel is loaded and uneven in weight distribution, so that huge noise is generated during operation.
Therefore, in order to solve the deficiencies of the prior art, it is necessary to provide a non-planar range hood with a fume separator.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provide a non-planar range hood with a lampblack separator. The outer surface of the range hood is used as a guiding surface in the moving direction of the oil smoke, and is not used for forming a covering area for gathering the oil smoke, so that oil smoke particles can be separated from the inner part.
The above object of the present invention is achieved by the following means.
The non-planar range hood with the oil smoke separator is provided with a hood main body, the oil smoke separator capable of separating oil smoke particles and a non-planar shell for filtering oil smoke, wherein the shell is assembled on the outer surface of the hood main body, and the oil smoke separator is assembled in the shell.
The side of the range hood, which faces the ground when being installed, is defined as the lower part, the axis of the range hood is parallel to a straight line which passes through the gravity center of the range hood and is perpendicular to the horizontal plane, the shortest distance is L, the maximum width of the shell is defined as K, and L is more than or equal to 0 and less than or equal to 0.1K.
Further preferably, L is not less than 0 and not more than 0.05K.
Still more preferably, the above-mentioned L is not less than 0 and not more than 0.01K.
Preferably, the outer surface of the housing is used as a guiding surface for the movement direction of the oil smoke, and is not used for forming a covering area for gathering the oil smoke.
At least one air inlet is positioned at the position of the non-covering area of the shell.
The oil smoke moves along the outer surface of the shell and is sucked into the main body of the smoke machine by at least one air inlet arranged at the position of the non-covering area.
Preferably, the housing is provided with q air inlets.
The center point of each air inlet is P respectively 0 、P 1 、……、P i 、……、P q-1 The method comprises the steps of carrying out a first treatment on the surface of the And q is more than or equal to 2, i is more than or equal to 1 and less than or equal to q-1, and both i and q are positive integers, and the central point P of any one of the lowest positions of the central points of the air inlet is 0 And establishing a three-dimensional coordinate system for the origin.
At pass P 0 And in a plane parallel to the horizontal plane, passing P 0 And two straight lines perpendicular to each other are defined as X-axis and Y-axis, which will pass through P 0 And straight lines perpendicularly intersecting the X-axis and the Y-axis are defined as Z-axis, P 0 The coordinate in the three-dimensional coordinate system is P 0 (X 0 ,Y 0 ,Z 0 )＝P 0 (0,0,0)。
Preferably, the coordinates of the center points of the q air inlets in the three-dimensional coordinate axis are P 0 (0,0,0)、P 1 (X 1 ,Y 1 ,Z 1 )、……、P i (X i ,Y i ,Z i )、……、P q-1 (X q-1 ,Y q-1 ,Z q-1 )，P 0 (0,0,0)≠P i (X i ,Y i ,Z i ) And P is i To P q-1 At least one of which has a Z-axis coordinate other than 0.
Preferably, the housing is further provided with q air inlet surfaces, the q air inlet surfaces are spliced to form the housing, and each air inlet surface is provided with a corresponding air inlet.
q air inlet surfaces are respectively defined as S 0 、S 1 、...、S i 、...、S q-1 Center point P of q air inlets 0 、P 1 、...、P i 、...、P q-1 Respectively at S 0 、S 1 、...、S i 、...、S q -1。
Preferably, the air inlet surface is at least one of a plane or a non-plane structure, and any one air inlet surface and other adjacent air inlet surfaces are spliced in a seamless manner.
Preferably, the oil smoke separator is provided with a plurality of concentric pipes with coincident central axes, a rotating shaft and a plurality of eave structures, wherein the rotating shaft is fixedly connected with one ends of the concentric pipes respectively, the eave structures are arranged in a surrounding manner and are fixedly arranged at the other ends of the corresponding concentric pipes, and the rotating shaft is connected with a motor of the main body of the smoke machine in a transmission manner.
The side of the oil smoke separator facing the ground when being installed is defined as the lower part, and concentric pipes outwards from the central axis are sequentially defined as the 1 st concentric pipe, the i concentric pipe, the n-1 th concentric pipe, the n concentric pipe, the i is more than or equal to 2 and less than or equal to n, and the n is a positive integer.
The 1 st concentric tube has a height H 1 ,...the height of the i-th concentric tube is H i ,... the n-1 th concentric tube has a height H n-1 The height of the n-th concentric tube is H n ，H 1 Maximum value of H n The value of (2) is the smallest.
Preferably, the oil smoke separator is further provided with a vortex generating device group, wherein the vortex generating device group is fixedly arranged on the outer surface of the concentric tube and surrounds the joint of the eave structure and the concentric tube, and the vortex generating device group is arranged on the upper surface of the eave structure.
Each vortex generating device group consists of one or more vortex generating sub-devices of the same eave structure.
Preferably, the above-mentioned vortex generating device group is provided with m, m is any positive integer greater than 0, and m vortex generating device groups are respectively fixedly installed on the outer surface of the concentric tube and encircle the junction of the eave portion structure and the concentric tube.
Preferably, the concentric tube is provided with a turbulence device, and the turbulence device is seamlessly looped around the end connected to one end of the concentric tube.
Preferably, the eave structure is provided with a plurality of through holes.
Preferably, the concentric tube is formed by encircling a central axis by a line segment formed by a plurality of sections of fold lines, and the intersection position of two adjacent line segments on the inner wall of the concentric tube is an eddy current generation position.
Preferably, the concentric tube has a diameter at one end that is larger than the diameter at the other end.
Preferably, at least one eave structure is fixedly connected to the other end of the concentric tube.
Preferably, the minimum distance between the oil smoke separator and the shell is D, and D is more than or equal to 1.0mm and less than or equal to 150mm.
Preferably, the above-mentioned cigarette machine main part is provided with exhaust component and oil collecting device, and exhaust component fixed mounting just is located the top of oil smoke separator in the inside of shell, and oil collecting device assembles in the bottom of shell.
Preferably, the housing is provided with an annular piece matched with the air inlet, and the annular piece is fixedly installed or integrally connected to the corresponding inner surface of the housing and is positioned at the edge of the air inlet.
Preferably, the exhaust assembly is provided with a fan, a wind wheel and a volute, the fan is assembled in the volute, the wind wheel is in transmission connection with the fan, an air inlet of the volute fixedly installed in the main body of the smoke machine is communicated with an air outlet above the concentric tube, and an air outlet of the volute is communicated with an air outlet of the main body of the smoke machine.
Preferably, the housing has an axisymmetric structure.
The invention relates to a non-planar range hood with a lampblack separator, which is provided with a main body of the range hood, the lampblack separator capable of separating lampblack particles and a non-planar shell, wherein the shell is assembled on the outer surface of the main body of the range hood, and the lampblack separator is assembled in the shell. The side of the range hood, which faces the ground when being installed, is defined as the lower part, the axis of the range hood is parallel to a straight line which passes through the gravity center of the range hood and is perpendicular to the horizontal plane, the shortest distance is L, the maximum width of the shell is defined as K, and L is more than or equal to 0 and less than or equal to 0.1K. The outer surface of the range hood is used as a guiding surface in the moving direction of the oil smoke, and is not used for forming a covering area for gathering the oil smoke, so that oil smoke particles can be separated from the inner part. The range hood and the oil smoke separator of the range hood compared with the prior art generate additional centrifugal force, can effectively remove oil smoke particles, prevent the oil smoke particles from entering the exhaust assembly, prevent the oil smoke particles from contacting with the wind wheel, and greatly improve the separation effect of the oil smoke particles.
Drawings
The invention is further illustrated by the accompanying drawings, which are not to be construed as limiting the invention in any way.
Fig. 1 is a schematic structural view of an embodiment 1 of a non-planar range hood with a fume separator according to the present invention.
Fig. 2 is a schematic diagram of the oil smoke separator in fig. 1.
FIG. 3 is a schematic elevation view of the concentric tubes of FIG. 2.
Fig. 4 is a schematic view of the outer casing and the oil collecting device of the present invention.
Fig. 5 is a simulated diagram of the flow of oil fume gas according to the present invention.
Fig. 6 is a cross-sectional perspective view of the oil smoke separator.
In fig. 1 to 6, there are included:
the oil smoke separator 1, a concentric tube 11, a turbulent flow device 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, an air inlet 21, an annular sheet 22, an oil collecting device 3, a motor 4 and an exhaust assembly 5.
Detailed Description
The technical scheme of the invention is further described with reference to the following examples.
Example 1.
As shown in fig. 1 to 6, a non-planar range hood with a range hood body, a range hood 1 capable of separating fume particles, and a non-planar housing 2 for filtering fume are provided, the housing 2 is mounted on the outer surface of the range hood body, and the range hood 1 is mounted inside the housing 2.
The side of the range hood facing the ground when being installed is defined as the lower side, the axis of the range hood 1 is parallel to a straight line which passes through the gravity center of the range hood and is perpendicular to the horizontal plane, the shortest distance is L, the maximum width of the shell 2 is defined as K, and L is more than or equal to 0 and less than or equal to 0.1K. The preferred value of L is 0.ltoreq.L.ltoreq.0.05K, the preferred value of L in this example is 0.ltoreq.L.ltoreq.0.01K, and in particular L=0.01K. The L of the present invention may be any distance in the range of 0 to 0.01K, any distance in the range of 0 to 0.1K, or any distance in the range of 0 to 0.05K in the present embodiment, and the specific embodiment distance depends on the actual situation.
The outer surface of the housing 2 serves as a guide surface for the direction of movement of the soot, rather than forming a hood region for collecting soot. At least one air inlet 21 is located in the non-covered region of the housing 2. The fume moves along the outer surface of the casing 2 and is sucked into the main body of the fume extractor by at least one air inlet 21 arranged at a position of a non-covering area.
The housing 2 is provided with q air intakes 21. Each air inletThe center points of the ports 21 are respectively P 0 、P 1 、……、P i 、……、P q-1 The method comprises the steps of carrying out a first treatment on the surface of the And q is more than or equal to 2, i is more than or equal to 1 and less than or equal to q-1, and both i and q are positive integers, and any one center point P in the lowest position of the center point of the air inlet 21 is used 0 And establishing a three-dimensional coordinate system for the origin. At pass P 0 And in a plane parallel to the horizontal plane, passing P 0 And two straight lines perpendicular to each other are defined as X-axis and Y-axis, which will pass through P 0 And straight lines perpendicularly intersecting the X-axis and the Y-axis are defined as Z-axis, P 0 The coordinate in the three-dimensional coordinate system is P 0 (X 0 ,Y 0 ,Z 0 )＝P 0 (0,0,0)。
The coordinates of the central points of the q air inlets 21 in the three-dimensional coordinate axis are P 0 (0,0,0)、P 1 (X 1 ,Y 1 ,Z 1 )、……、P i (Xi,Yi,Zi)、……、P q-1 (X q-1 ,Y q-1 ,Z q-1 )，P 0 (0,0,0)≠P i (X i ,Y i ,Z i ) And P is i To P q-1 At least one of which has a Z-axis coordinate other than 0.
The shell 2 is also provided with q air inlet surfaces, the q air inlet surfaces are spliced to form the shell 2, and each air inlet surface is provided with a corresponding air inlet 21.
q air inlet surfaces are respectively defined as S 0 、S 1 、...、S i 、...、S q-1 Center point P of q air inlets 21 0 、P 1 、...、P i 、...、P q-1 Respectively at S 0 、S 1 、...、S i 、...、S q-1 。
The air inlet surfaces are respectively in at least one of a plane structure or a non-plane structure, and any one air inlet surface is in seamless splicing with other adjacent air inlet surfaces.
The oil smoke separator 1 is provided with a plurality of concentric pipes 11 with coincident central axes, a rotating shaft 12 and a plurality of eave structures 13, wherein the rotating shaft 12 is fixedly connected with one ends of the concentric pipes 11 respectively, the eave structures 13 are arranged in a surrounding manner and are fixedly arranged at the other ends of the corresponding concentric pipes 11, and the rotating shaft 12 is in transmission connection with a motor 4 of the main body of the smoke machine.
The axis of the oil smoke separator 1 coincides with the central axis of the concentric tube 11.
The side of the oil smoke separator 1 facing the ground when installed is defined as the lower side, and the concentric pipes 11 outwards from the central axis are defined as the 1 st concentric pipe in turn.
The 1 st concentric tube has a height H 1 ,...the height of the i-th concentric tube is H i ,... the n-1 th concentric tube has a height H n-1 The height of the n-th concentric tube is H n ，H 1 Maximum value of H n The value of (2) is the smallest.
The oil smoke separator 1 is also provided with a vortex generating device group 14, the vortex generating device group 14 is fixedly arranged on the outer surface of the concentric tube 11 and surrounds the joint of the eave structure 3 and the concentric tube 11, and the vortex generating device group 14 is arranged on the upper surface of the eave structure 13.
Each vortex generating device group 14 consists of one or more vortex generating sub-devices located at the same eave structure 13.
The vortex generating device groups 14 are provided with m, wherein m is any positive integer greater than 0, and the m vortex generating device groups 14 are respectively fixedly installed on the outer surfaces of the concentric tubes 11 and encircle the connection positions of the eave part structures 13 and the concentric tubes.
N=3 in this embodiment, i.e. the concentric tubes 11 of this embodiment are provided with 3. In this embodiment m=2, that is, the vortex generating device group 14 is provided in 2, one is provided in the 3 rd concentric tube, and the other is provided in the 2 nd concentric tube. The number of concentric tubes 11 of the present invention may be any positive integer, and the vortex generating device group 14 may be less than or equal to any positive integer of the number of concentric tubes 11.
The concentric tube 11 is provided with a spoiler 111, the spoiler 111 being seamlessly looped around the end of one end of the concentric tube 11. The turbulence device 111 is used for generating turbulence in the oil smoke gas, thereby improving the oil removal capability.
The eave structure 13 is provided with a plurality of through holes 131. The through holes 131 have the function of separating oil particles which are converged into large particles from the inside of the oil smoke separator 1 when the oil smoke separator 1 rotates, so that the separation effect of the oil smoke particles is greatly improved.
The concentric tube 11 is a concentric tube 11 formed by encircling a central axis by a line segment formed by a plurality of sections of fold lines, and the intersection position of two adjacent line segments on the inner wall of the concentric tube 11 is a vortex generating position 15. 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 oil smoke removing efficiency.
The diameter of one end of the concentric tube 11 is larger than the diameter of the other end. One end of the concentric tube 11 is connected with the air exhausting assembly 5, namely an air outlet of the concentric tube 11, the other end of the concentric tube 11 is an air inlet of the concentric tube 11, and according to the venturi effect, the larger the area through which the fluid flows, the smaller the flow velocity, namely the velocity of the gas at one end of the concentric tube 11 is greater than the velocity of the gas at the other end of the concentric tube 11. According to Bernoulli's law, the higher the speed of the gas, the smaller the pressure, so that the pressure at one end of the concentric tube 11 connected with the exhaust assembly 5 is high, and the pressure at the air inlet of the concentric tube 11 is low, thereby increasing the pressure difference between the air inlet of the concentric tube 11 and the external environment, and further promoting the entry of the oil smoke gas and improving the oil absorption effect.
The other end of the concentric tube 11 of the present invention may be fixedly connected with at least one eave structure 13, or the other end of the concentric tube 11 may be fixedly connected with only one eave structure 13. The other end of the 1 st concentric tube of this embodiment is connected with two eave structures 13. The two eave structures 13 connected with the 1 st concentric tube have the effect of reducing the space volume between the 1 st concentric tube and the 2 nd concentric tube, thereby reducing the area of the air inlets of the 2 nd concentric tube, improving the air inlet speed and increasing the pressure difference between the inside and the outside space of the concentric tube 11.
The minimum distance between the oil smoke separator 1 and the shell 2 is D, the preferred embodiment is 120mm, and the minimum distance D of the invention can be any value from 1.0mm to 150mm, and the specific situation is determined.
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 minimum distance between the oil smoke separator 1 and the shell 2 is small, so that the gap for oil smoke gas to enter the oil smoke separator 1 is small, the speed of the oil smoke gas entering the oil smoke separator 1 is increased, the pressure difference between the oil smoke separator and the external environment is increased, and the smoking capacity of the range hood capable of improving the internal pressure difference is improved.
The main body of the smoke machine is provided with an air draft assembly 5 and an oil collecting device 3, the air draft assembly 5 is fixedly installed in the shell 2 and located above the smoke separator 1, and the oil collecting device 3 is assembled at the bottom of the shell 2.
The housing 2 is provided with an annular piece 22 matching the air inlet 21, and the annular piece 22 is integrally connected to the corresponding inner surface of the housing 2 and located at the edge of the air inlet 21. The annular piece 22 of the present invention may be fixedly mounted to the housing 2, depending on the specific embodiment.
The annular piece 22 has the function of generating vortex when the oil smoke gas enters the shell 2, and simultaneously preventing oil smoke particles from being thrown out of an external space from the air inlet 21 of the shell 2 when the oil smoke particles are thrown out of the oil smoke separator 1.
The exhaust assembly 5 is provided with a fan, a wind wheel and a volute, the fan is assembled in the volute, the wind wheel is in transmission connection with the fan, an air inlet of the volute fixedly arranged in the main body of the cigarette machine is communicated with an air outlet above the concentric tube 11, and an air outlet of the volute is communicated with an air outlet of the main body of the cigarette machine. The shell of the invention has an axisymmetric structure.
The working principle of the range hood is as follows: starting the range hood, driving the oil smoke separator 1 by the motor 4, simultaneously rotating the wind wheel of the air draft assembly 5, separating oil smoke particles in the range hood through seven layers, and finally discharging almost clean gas through the air outlet. The seven layers are separated as follows:
first layer separation, inertial separation: the oil smoke enters the smoke machine through the air inlet 21 of the shell 2, and enters the annular piece 22 after entering the air inlet 21, because of the pressure difference between the inside of the shell 2 and the external environment and the abrupt change of the area of the air inlet 21, the air flow speed is increased, and the inertia momentum is also relatively increased. The oil smoke forms a very thin boundary layer around the annular piece 22, and because the air inlet 21 of the shell 2 forms an included angle with the annular piece 22, the oil smoke is forced to flow downwards along the annular piece 22 and then upwards to enter the oil smoke separator 1, so that heavier oil moves downwards in a downward inertial motion and is separated from a crude oil smoke flow field to be collected at the oil collecting device 3 at the bottom of the shell 2, and the first inertial separation is realized.
Second layer separation, vortex separation: the oil smoke particles separated by the first layer are further subjected to flow field separation in the downward-upward 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 vortex. The flow field or vortex interacts with adjacent flow fields or vortices to form a continuously self-rotating flow field in the annular sheet 22, where the rotating vortices reach a maximum vorticity. The remaining light oil smoke will accumulate in the whirling vortex of the annular plate 22, and when a certain weight is accumulated, the flow field will not support the weight of the oil drops, and will drop down or flow to the oil collecting device 3 along the annular plate 22.
Third layer separation, centrifugal force separation: the eave structure 13 follows the rotation of the concentric tube 11 creating a centrifugal force that interacts with the attractive force of the suction assembly 5. After the second separation, the rest part of the lighter oil smoke contacts the outermost end of the eave structure 13 before entering the concentric tube 11 when entering the concentric tube 11, and the centrifugal force at the outermost end of the eave structure 13 can bring or block part of fluid or oil smoke particles into the concentric tube 11 and move outwards, and then the oil smoke particles are thrown out at a higher tangential speed, and the thrown out particles can fall on the annular sheet 22 and finally flow to the oil collecting device 3 along the annular sheet 22.
Fourth layer separation, inertial separation and centrifugal force separation: after separation by the third layer, the remaining lighter-weight soot is subjected to both centrifugal and attractive forces, but the relative attractive force is greater than the centrifugal force. Some of these soot flows through the through holes 131 to the adjacent eave structure 13, and due to the inertia effect, the soot and other soot or soot particles are collected into larger soot particles, which flow downward, and due to the centrifugal force effect, the soot particles are thrown out at a higher tangential velocity and finally flow along the annular sheet 22 to the oil collecting device 3.
Fifth layer separation, cyclonic centrifugal force and secondary vortex generation of concentric tube 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 and the like in the pipeline move towards the wall of the pipeline under the action of centrifugal force, the wall of the pipeline forms high tangential velocity, and part of oil smoke is blocked from flowing upwards. In addition, the rest oil smoke can form vortex in the vortex generating device, the vortex generating device continuously rotates automatically, and the oil smoke is captured and cannot escape from the pipeline. When the attractive force and the centrifugal force are removed, the secondary vortex which continuously rotates and the oil smoke which performs high tangential motion on the pipe wall can flow downwards along the inner pipe wall due to gravity and be collected to the oil collecting device 3.
Sixth layer separation, spoiler 111 separation: the flow field separation is carried out on the residual oil smoke by the turbulence device 111 at one end of the concentric tube 11, and part of the oil smoke is blocked from flowing upwards and being self-rotated due to the instability of the flow field by virtue of the flow field separation to capture the oil smoke.
Seventh layer separation, wind wheel centrifugal force separation: after the first six layers of separation, a small amount of very light oil smoke particles are remained and sucked into the wind wheel of the air draft assembly 5 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 out through the gas outlet.
The outer surface of the range hood is used as a guiding surface in the moving direction of the oil smoke, and is not used for forming a covering area for gathering the oil smoke, so that oil smoke particles can be separated from the inner part. The range hood and the oil smoke separator of the range hood compared with the prior art generate additional centrifugal force, can effectively remove oil smoke particles, prevent the oil smoke particles from entering the exhaust assembly, prevent the oil smoke particles from contacting with the wind wheel, and greatly improve the separation effect of the oil smoke particles.
Example 2.
A non-planar range hood with a fume separator, other features being the same as in example 1, except that: l=0 in this embodiment, that is, the axis of the oil smoke separator 1 coincides with a straight line perpendicular to the horizontal plane passing through the center of gravity of the range hood.
Compared with the embodiment 1, the axis of the smoke separator 1 of the embodiment coincides with a straight line perpendicular to the horizontal plane passing through the center of gravity of the range hood, and the overall quality of the range hood is more even and more stable when the smoke separator 1 is operated.
Example 3.
A non-planar range hood with a fume separator, other features being the same as in example 1, except that: n=4 in this embodiment, i.e., the concentric tubes 1111 in this embodiment are provided with 4. In this embodiment m=2, that is, the vortex generating device group 14 is provided in 2, one is provided in the 4 th concentric tube, and the other is provided in the 3 rd concentric tube. While the concentric tubes 11 of the present embodiment are in one-to-one correspondence with the eave structures 1313.
Compared with the embodiment 1, the non-planar range hood with the oil smoke separator has the advantages that one concentric tube 11 is increased, namely, the space volume of the oil smoke separator 1 in the shell 2 is increased, so that the area of an air inlet of the concentric tube 11 is reduced, the air inlet speed is improved, the pressure difference between the inner space and the outer space of the concentric tube 11 is increased, and the separation rate of oil smoke particles can be improved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (3)
1. A non-planar range hood with a fume separator, which is characterized in that: the smoke separator is arranged in the shell;
defining one side of the range hood, which faces the ground when the range hood is installed, as the lower part, wherein the axis of the range hood is parallel to a straight line which passes through the gravity center of the range hood and is vertical to the horizontal plane, the shortest distance is L, the maximum width of the shell is K, and L is more than or equal to 0 and less than or equal to 0.1K;
the oil smoke separator is provided with a plurality of concentric pipes with center shafts overlapped, a rotating shaft and a plurality of eave part structures, wherein the rotating shaft is fixedly connected with one ends of the concentric pipes respectively, the eave part structures are arranged in a surrounding manner and are fixedly arranged at the other ends of the corresponding concentric pipes, and the rotating shaft is in transmission connection with a motor of the main body of the smoke machine;
the axis of the oil smoke separator coincides with the central axis of the concentric tube;
the concentric tubes from the center to the outside are sequentially defined as a 1 st concentric tube, an i th concentric tube, an n-1 st concentric tube, an n-th concentric tube, and 2.ltoreq.i.ltoreq.n, and n is a positive integer;
the 1 st concentric tube has a height H 1 ,...the height of the i-th concentric tube is H i ,... the n-1 th concentric tube has a height H n-1 The height of the n-th concentric tube is H n ，H 1 Maximum value of H n The value of (2) is the smallest;
the oil smoke separator is also provided with a vortex generating device group which is fixedly arranged on the outer surface of the concentric tube and surrounds the joint of the eave structure and the concentric tube, and the vortex generating device group is arranged on the upper surface of the eave structure;
each vortex generating device group consists of one or more vortex generating sub-devices of the same eave structure;
the vortex generating device groups are provided with m, wherein m is any positive integer greater than 0, and the m vortex generating device groups are fixedly arranged on the outer surfaces of the concentric pipes and encircle the connection parts of the eave part structures and the concentric pipes;
the concentric tube is provided with a turbulence device, and the turbulence device is in seamless surrounding connection with the tail end of one end of the concentric tube;
the eave part structure is provided with a plurality of through holes;
the concentric tube is formed by surrounding a center shaft by line segments formed by a plurality of sections of fold lines, and the intersection position of two adjacent line segments on the inner wall of the concentric tube is an eddy current generation position;
the diameter of one end of the concentric tube is larger than the diameter of the other end;
the other end of the concentric tube is fixedly connected with at least one eave structure;
the minimum distance between the oil smoke separator and the shell is D, and D is more than or equal to 1.0mm and less than or equal to 150mm; the smoke machine main body is provided with an air draft assembly and an oil collecting device, the air draft assembly is fixedly arranged in the shell and is positioned above the oil smoke separator, and the oil collecting device is assembled at the bottom of the shell;
the shell is provided with an annular sheet matched with the air inlet, and the annular sheet is fixedly installed or integrally connected to the corresponding inner surface of the shell and positioned at the edge of the air inlet.
2. A non-planar range hood with a fume separator as set forth in claim 1 wherein: the outer surface of the shell is used as a guiding surface of the oil smoke moving direction, and a covering area for gathering the oil smoke is not formed;
at least one air inlet is positioned at the position of the non-covering area of the shell;
the oil smoke moves along the outer surface of the shell and is sucked into the main body of the smoke machine by at least one air inlet arranged at the position of the non-covering area;
q air inlets are formed in the shell;
the center point of each air inlet is P respectively 0 、P 1 、……、P i 、……、P q-1 The method comprises the steps of carrying out a first treatment on the surface of the And q is more than or equal to 2, i is more than or equal to 1 and less than or equal to q-1, and both i and q are positive integers, and the central point P of any one of the lowest positions of the central points of the air inlet is 0 Establishing a three-dimensional coordinate system for an origin;
at pass P 0 And in a plane parallel to the horizontal plane, passing P 0 And two straight lines perpendicular to each other are defined as X-axis and Y-axis, which will pass through P 0 And straight lines perpendicularly intersecting the X-axis and the Y-axis are defined as Z-axis, P 0 The coordinate in the three-dimensional coordinate system is P 0 (X 0 ,Y 0 ,Z 0 )＝P 0 (0,0,0)；
The coordinates of the central points of the q air inlets in the three-dimensional coordinate axis are P 0 (0,0,0)、P 1 (X 1 ,Y 1 ,Z 1 )、……、P i (X i ,Y i ,Z i )、……、P q-1 (X q-1 ,Y q-1 ,Z q-1 )，P 0 (0,0,0)≠P i (X i ,Y i ,Z i ) And P is i To P q-1 At least one of which has a Z-axis coordinate other than 0;
the shell is also provided with q air inlet surfaces, the q air inlet surfaces are spliced to form the shell, and each air inlet surface is provided with a corresponding air inlet;
q air inlet surfaces are respectively defined as S 0 、S 1 、...、S i 、...、S q-1 Center point P of q air inlets 0 、P 1 、...、P i 、...、P q-1 Respectively at S 0 、S 1 、...、S i 、...、S q-1 ；
The air inlet surface is at least one of a plane or a non-plane structure respectively, and any one air inlet surface is in seamless splicing with other adjacent air inlet surfaces.
3. A non-planar range hood with a fume separator as set forth in claim 2 wherein:
the air draft assembly is provided with a fan, a wind wheel and a volute, the fan is assembled in the volute, the wind wheel is in transmission connection with the fan, an air inlet of the volute fixedly arranged in the main body of the cigarette machine is communicated with an air outlet above the concentric tube, and an air outlet of the volute is communicated with an air outlet of the main body of the cigarette machine;
the shell is of an axisymmetric structure.
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| CN201810187767.8A CN108443923B (en) | 2018-03-07 | 2018-03-07 | Non-planar range hood with oil smoke separator |
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| CN201810187767.8A CN108443923B (en) | 2018-03-07 | 2018-03-07 | Non-planar range hood with oil smoke separator |
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| CN108443923B true CN108443923B (en) | 2024-03-15 |
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| CN109631113A (en) * | 2018-12-31 | 2019-04-16 | 佛山市云米电器科技有限公司 | A kind of smoke machine shell with Multiple Shape air inlet |
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