CN108224528B - Smoke machine for cleaning oil smoke by using positive and negative pressure - Google Patents

Smoke machine for cleaning oil smoke by using positive and negative pressure Download PDF

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Publication number
CN108224528B
CN108224528B CN201810188674.7A CN201810188674A CN108224528B CN 108224528 B CN108224528 B CN 108224528B CN 201810188674 A CN201810188674 A CN 201810188674A CN 108224528 B CN108224528 B CN 108224528B
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air
oil
concentric tube
positive
pressure generating
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CN108224528A (en
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陈小平
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Foshan Viomi Electrical Technology Co Ltd
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Foshan Viomi Electrical Technology Co Ltd
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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
    • F24C15/2021—Arrangement or mounting of control or safety systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Ventilation (AREA)

Abstract

A smoke machine for cleaning oil smoke by using positive and negative pressure can clean the smoke machine and effectively guide and collect oil stain cleaned in the smoke machine, and is provided with a smoke machine body, an air pressure generating part capable of generating positive pressure through rotation and a motor controller; the air pressure generating piece is arranged at the bottom of the air draft assembly of the cigarette machine body; the motor controller is respectively and electrically connected with the air draft assembly and the air pressure generating piece of the cigarette machine body and executes self-cleaning operation; a first oil collecting device is also arranged; the first oil collecting device is arranged at the bottom of the air pressure generating piece; the smoke machine for cleaning the oil smoke by using the positive pressure and the negative pressure can clean the smoke machine, effectively guide and collect the oil stain cleaned in the smoke machine, improve the cleaning efficiency of the smoke machine, and has the characteristics of simple structure and convenience in use.

Description

Smoke machine for cleaning oil smoke by using positive and negative pressure
Technical Field
The invention relates to the technical field of range hoods, in particular to a range hood for cleaning oil smoke by utilizing positive and negative pressure.
Background
The range hood is one of the indispensable electrical appliances in the family nowadays. The range hood is arranged above the kitchen gas stove, and can absorb the oil smoke generated during cooking by generating negative pressure and discharge the oil smoke out of the room, thereby reducing air pollution in the kitchen. However, when the range hood is used, more oil smoke is attached to the range hood along with the direction of the negative pressure airflow, so that unnecessary troubles are caused for people to use.
In the prior art, the cleaning of the oil stain on the cigarette machine cannot form an effective collection aiming at the cleaned oil stain in the cleaning process, and the secondary pollution to other parts on the cigarette machine is easily caused.
Therefore, aiming at the defects of the prior art, the smoke machine for cleaning the oil smoke by using positive and negative pressure is provided to overcome the defects of the prior art.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provide a range hood for cleaning lampblack by utilizing positive and negative pressures, the range hood for cleaning lampblack by utilizing positive and negative pressures can clean an air exhaust component in the range hood by generating positive pressure and can effectively guide and collect cleaned oil stains in the cleaning process, so that unnecessary pollution to the range hood is avoided, and the cleaning efficiency of the range hood is improved.
The above object of the present invention is achieved by the following means.
The positive pressure is used for cleaning oil in the fan, the negative pressure and the centrifugal force are used for cleaning the oil in the oil fume separator, and the cleaned oil is collected in an oil collecting cup.
Preferably, the range hood for clearing oil smoke by utilizing positive and negative pressure is provided with a range hood body, an air pressure generating part capable of generating positive pressure through rotation and a motor controller;
the air pressure generating piece is arranged below the air exhaust assembly of the cigarette machine body;
the motor controller is electrically connected with the air draft assembly and the air pressure generating piece of the cigarette machine body respectively and executes self-cleaning operation.
Preferably, the self-cleaning operation includes a cleaning operation of the air extracting assembly and the air pressure generating member.
Defining the positive pressure generating rotation direction of the air pressure generating piece as positive rotation;
the motor controller controls the air draft assembly and the air pressure generating piece to execute the following operations;
(1): controlling the rotating speed of the air draft assembly to be the lowest rotating speed or keeping the rotating speed unchanged;
(2): controlling the positive rotating speed of the air pressure generating piece to be adjusted to the maximum rotating speed within the time of T1 second and rotating for 5-60 seconds;
(3): stopping the rotation of the air pressure generating piece for 1-10 seconds;
(4): repeating the steps (2) and (3) for N1 times in a circulating manner; n1 is more than or equal to 1, and N1 is a positive integer;
(5): controlling the air draft assembly to stop working, controlling the positive rotation of the air pressure generating piece to the maximum rotation speed within T2 seconds, and keeping for 5-60 seconds; t1 is more than or equal to 1, and T2 is more than or equal to 1;
or
Preferably, the motor controller controls the air draft assembly and the air pressure generating assembly to perform the following operations;
(2-1): controlling the air draft assembly to stop rotating;
(2-2): adjusting the air pressure generating piece to the maximum rotating speed within the time T3, and rotating the air pressure generating piece forwards for 5-60 seconds, wherein the time T3 is more than 0;
(2-3): stopping the air pressure generating piece from rotating, and controlling the air draft assembly to rotate for 1-10 seconds;
(2-4): controlling the air pressure generating piece to rotate forwards for 5-60 seconds;
(2-5): controlling the air pressure generating part to stop rotating and keeping the air draft assembly to start rotating for 1-10 seconds;
(2-6) controlling the air draft assembly to stop working, adjusting the air pressure generating piece to the maximum rotating speed within T4 time, and rotating the air pressure generating piece forwards for 5-60 seconds, wherein T4 is more than 0;
(2-7) repeating the steps (2-2) and (2-6) N2 times circularly; n2 is more than or equal to 1, and N2 is a positive integer.
Or
Defining the positive pressure generating rotation direction of the air pressure generating piece as positive rotation;
preferably, the motor controller controls the air draft assembly and the air pressure generating assembly to perform the following operations;
(3-1): controlling the air draft assembly to rotate to the lowest rotating speed or keeping the rotating speed unchanged;
(3-2): controlling the positive rotation speed of the air pressure generating piece to be adjusted to the maximum rotation speed and keeping the maximum rotation speed for 5-60 seconds;
(3-3): controlling the air pressure generating piece to rotate reversely for 5-60 seconds;
(3-4): repeating the steps (3-2) and (3-3) for N3 times in a circulating way; n3 is more than or equal to 1, and N3 is a positive integer;
(3-5): controlling the air draft assembly to stop working, and circularly repeating the steps (3-2) and (3-3) for N4 times; n4 is greater than or equal to 1, and N4 is a positive integer.
The oil collecting device is also provided with a first oil collecting device; the first oil collecting device is arranged at the bottom of the air pressure generating piece;
the first oil collecting device is arranged to be an oil collecting cup;
the motor controller is set to be any one of ARM, DSP and BC 630-15075.
The air pressure generating piece is provided with a rotating motor, a first rotating shaft and a rotating piece which can rotate in different directions to generate pressure intensities in different directions;
both ends of the rotating shaft are respectively connected with the rotating motor and the first rotating shaft.
Preferably, the rotary member is provided with a sleeve and a first blade;
the first blade is arranged in the sleeve;
the pipe orifice at one end of the sleeve in the gravity direction is defined as G Positive pipe orifice (ii) a The pipe orifice at one end of the sleeve in the opposite direction of gravity is defined as G Negative pipe orifice ；
Above, G Negative pipe orifice At the bottom of the oil smoke sucking port of the air draft assembly, and G Negative pipe orifice The distance between the oil fume suction port and the bottom of the air draft assembly is J, and J is more than 0;
the inner wall surface of the sleeve and the outer wall surface of the sleeve are respectively provided with an oleophobic coating;
above, G Negative pipe orifice The end part of the oil tank is provided with an oil backflow prevention device;
above-mentioned, prevent that oily device sets up to have certain inclination Z along G Negative pipe orifice The inner wall of the end portion faces the G Positive pipe mouth Direction G Positive pipe orifice An extension piece extending outwards in the direction, the extension length of the extension piece is less than G Negative pipe orifice 0.5 times the minimum diameter of the end;
g is to be Positive pipe orifice Diameter is defined as R1, G Negative pipe orifice Is R2; r1 is more than R2; or
R1≤R2。
Preferably, the rotating member is a multi-stage oil fume separation main body; the multi-step oil fume separation main body is provided with a plurality of concentric tubes with coincident center shafts and a connecting shaft for connecting the concentric tubes and the first rotating shaft;
the concentric tube is fixedly connected with the connecting shaft.
The outer end face of the concentric tube for connecting with the connecting shaft is defined as a first plane; establishing a plane coordinate system by taking the intersection point of the first plane and the central axis of the concentric tube as an origin; and above, the middle axis is the y axis, the gravity direction is the y axis negative direction, and the gravity reverse direction is the y axis positive direction; taking the horizontal direction as an x axis; and in the horizontal right direction, the positive direction of the x-axis.
Sequentially defining concentric tubes outwards from an original point along the x-axis direction as a 1 st concentric tube, an i th concentric tube, an n-1 th concentric tube and an n th concentric tube, wherein i is more than or equal to 2 and less than or equal to n, and n is a positive integer; the length of the concentric tube in the negative y-axis direction is H.
The length of the No. 1 concentric tube along the negative direction of the y axis is H 1 Said output is said, the length of the i-th concentric tube along the negative direction of the y-axis is H i Said n-1 concentric tube has a length H along the negative direction of the y-axis n-1 The length of the nth concentric tube along the negative direction of the y axis is H n ，H 1 Has the maximum value of H n The value of (c) is minimal.
Above, 1.1H n ≤H i ≤10H n And 0.5H i-1 ≤H i ≤3H i-1 ；
Height H of the 1 st concentric tube 1 Not more than 1m;
defining one end of the concentric tube, which is connected with the connecting shaft, as an inner air outlet, and defining the other end of the concentric tube as an inner air inlet; the diameter of the end of the air outlet in the concentric tube is D relative to the x-axis.
The diameter of the end part of the air inlet in the concentric tube is d relative to the x axis;
the diameter of the end part of the air outlet in the 1 st concentric tube is D (1),... The diameter of the end part of the air outlet in the i th concentric tube is D (i),... The diameter of the end part of the air outlet in the n-1 th concentric tube is D (n-1), and the diameter of the end part of the air outlet in the n th concentric tube is D (n);
the diameter of the end part of the air inlet in the 1 st concentric tube is d (1), the diameter of the end part of the air inlet in the i th concentric tube is d (i), the diameter of the end part of the air inlet in the n-1 th concentric tube is d (n-1), and the diameter of the end part of the air inlet in the n th concentric tube is d (n); d (1) > D (1),. ·., D (i) > D (i),. Once., D (n-1) > D (n-1),. Once., D (n) > D (n); d (1) < D (i) < D (n-1) < D (n).
The multistage oil fume separation main body is also provided with an oil fume adsorption separation blade; the oil fume adsorption separation blade is fixedly assembled on the outer wall surface of the end part of the air inlet in the concentric tube; the oil fume adsorption blocking sheet is an annular fan sheet which extends outwards along any local area of the outer wall surface of the end part of the air inlet in the concentric tube;
the included angle between the plane where the annular fan sheet is located and the y axis is A, and A is more than or equal to 20 degrees and less than 180 degrees; q annular fan blades are arranged, and Q is a positive integer;
q = n or Q ≠ n;
when Q = n, the ring-shaped fan sheets correspond to the concentric tubes one by one and are defined as a first ring-shaped fan sheet, a second ring-shaped fan sheet, a ring-shaped fan sheet of 8230, a ring-shaped fan sheet of Q-1 and a ring-shaped fan sheet of Q-1; and i is more than or equal to 2 and less than or equal to Q, and Q is a positive integer;
the area of the annular fan blade is S; the area of the first annular fan blade is defined as S1, the area of the second annular fan blade is defined as S2, \8230;, the area of the ith annular fan blade is defined as Si, \8230;, the area of the Q-1 annular fan blade is defined as S (Q-1), and the area of the Q-1 annular fan blade is defined as S (Q); s1 is more than 0 and less than or equal to S2 and less than or equal to S (Q-1) and less than or equal to S (Q); the annular fan blade is also provided with a plurality of through holes; define the total area of the through-holes as E Through hole ，E Through hole ≤0.3S；
When Q is not equal to n, one end of the annular fan blade is fixedly arranged at any position of the outer wall surface of the concentric tube;
the multi-stage oil fume separation main body is also provided with a secondary vortex generation assembly;
the secondary vortex generating assembly is arranged to be an annular sheet which is outward along the wall surface of any local area of the concentric tube and has a certain thickness M and extends along the negative direction of the y axis;
the number of the secondary vortex generating assemblies is m, wherein m is more than or equal to 1, and m is a positive integer;
preferably, the secondary vortex generating assembly is arranged between any concentric tube and the annular fan sheet;
a hollow area for air flow to pass through is formed in any area of the annular sheet; the hollow area is set to be rectangular hollow or moire hollow;
the area of the hollow area is an S hollow area, the area of the annular sheet is an S annular sheet, and the S hollow area is more than or equal to 0 and less than the S annular sheet;
the plane where the secondary vortex generating assembly is located is intersected with the y axis, the included angle is B, and B is more than or equal to 10 degrees and less than or equal to 135 degrees;
the end part of the inner air outlet of the concentric tube is provided with an air collecting ring;
the gas collecting ring is a second arc-shaped sheet extending inwards in the y-axis direction along the end part of the inner gas outlet of the concentric tube; the included angle between the second arc-shaped piece and the x axis is P, and P is more than 0 degree and less than 90 degrees.
An oil collector is also arranged; the oil collector is arranged in the whole outward radiation area of the cigarette machine body and the air pressure generating piece.
The oil collector is provided with a second oil collecting device and a shell;
the second oil collecting device is arranged as an oil collecting cup.
Above-mentioned, the shell is provided with a plurality of first air inlets that are used for making the oil smoke ion get into the shell inside.
An oleophobic coating is also provided; the oleophobic coating is respectively arranged on the wall surfaces of the cigarette machine body, the air pressure generating piece, the shell and the oil collector;
the oleophobic coating is a nano coating or a Teflon coating;
the shell is also provided with oil separation blocking pieces which correspond to the first air inlets one by one and are fixedly assembled; the oil separation baffle is arranged to form a certain included angle B along the upper end surface of the first air inlet and is a first arc-shaped sheet extending towards the inside of the shell, and the angle B is more than 0 degrees and less than 180 degrees.
The invention relates to a smoke machine for cleaning oil smoke by utilizing positive and negative pressures, which is characterized in that the smoke machine for cleaning oil smoke by utilizing the positive and negative pressures cleans oil in a fan by utilizing the positive pressure, cleans the oil in an oil smoke separator by utilizing the action of the negative pressure and the centrifugal force, and collects the cleaned oil into an oil collecting cup. Be provided with the cigarette machine body, piece and machine controller take place for atmospheric pressure, machine controller respectively with the convulsions subassembly of cigarette machine body, an electricity is connected takes place for atmospheric pressure, and carry out the automatically cleaning operation, take place the greasy dirt clearance of malleation that the piece produced in with the convulsions subassembly and come out at the in-process of automatically cleaning through atmospheric pressure, and take place the greasy dirt that the rotation of piece and convulsions subassembly will be attached to on the atmospheric pressure takes place to go out from the clearance through machine controller control atmospheric pressure, still through setting up the oil catcher, the greasy dirt that comes out to the clearance guides effectively, the efficiency of cleaning at the cigarette machine has been improved.
Drawings
The invention is further illustrated by means of the attached drawings, the contents of which are not in any way limitative of the invention.
FIG. 1 is a schematic diagram of an electrical connection structure of a range hood for performing soot cleaning using positive and negative pressures according to the present invention.
Fig. 2 is a schematic structural diagram of a range hood for performing lampblack cleaning by using positive and negative pressures.
Fig. 3 is a schematic view of the internal structure of a range hood for performing soot cleaning by using positive and negative pressures in embodiment 1 of the present invention.
Fig. 4 is a partially enlarged sectional view of f1, f2, and f3 in fig. 3.
Fig. 5 is a schematic structural view of the oil smoke separator in embodiment 1 of the present invention.
Fig. 6 is a horizontally developed schematic view of the secondary vortex generating assembly in embodiment 1 of the present invention.
Fig. 7 is a plan view of a multi-step soot separation body in embodiment 1 of the present invention.
Fig. 8 is a perspective view of a multi-step lampblack separation main body in embodiment 1 of the present invention.
Fig. 9 is a schematic structural view of a multi-stage lampblack separation main body in embodiment 1 of the present invention.
Fig. 10 is a perspective view of a multi-step lampblack separation body in embodiment 1 of the present invention.
Fig. 11 is a perspective view of an oil-smoke separating body in embodiment 2 of the present invention.
Fig. 12 is a perspective view of an air pressure-generating member in embodiment 3 of the present invention.
FIG. 13 is a sectional view of an air pressure-generating member in embodiment 3 of the invention.
FIG. 14 is a sectional view of an air pressure-generating member in embodiment 4 of the present invention.
In fig. 1 to 14, there are included:
a cigarette machine body 100, an air draft component 203,
An air pressure generating member 111,
An oil collector 21, a second oil collecting device 202,
A first blade 112, a sleeve 113, an oil falling prevention device 114, a first oil collecting device 115, a rotating member 10, a first rotating shaft 101, a rotating motor 102,
The multi-step oil fume separation device comprises a multi-step oil fume separation main body 103, concentric pipes 110, a connecting shaft 120, an inner air outlet 130, an inner air inlet 140, annular fan sheets 105, through holes 106, a secondary vortex generation assembly 107, second arc-shaped sheets 108 and an oleophobic coating 104;
housing 201, first air inlet 2011, first arc-shaped sheet 2012
A motor controller 300.
Detailed Description
The invention is further described with reference to the following examples.
Example 1.
A smoke machine for cleaning smoke by positive and negative pressure is characterized in that the smoke machine for cleaning smoke by positive and negative pressure is used for cleaning oil in a fan by positive pressure, cleaning oil in a smoke separator by the action of negative pressure and centrifugal force, and collecting the cleaned oil into an oil collecting cup.
As shown in fig. 1 to 10, a cigarette machine body 100, an air pressure generating piece 111 capable of generating positive pressure by rotation, a motor controller 300 and an oil collector 21 are arranged;
the oil collector 21 is arranged in the integral outward radiation area of the cigarette machine body 100 and the air pressure generating piece 111.
The oil collector 21 is further provided with a second oil collecting device 202 and a housing 201, the second oil collecting device 202 is provided as an oil collecting cup, and the oil collecting cup is common knowledge of persons skilled in the art, and the detailed structure is not described again.
An oleophobic coating 104 is also provided; the oleophobic coating 104 is respectively arranged on the wall surfaces of the cigarette machine body 100, the air pressure generating component 111, the shell 201 and the oil collector 21; wherein the oleophobic coating 104 is provided as a nanocoating.
Wherein, the shell 201 arranges the air draft component 203 and the air pressure generating component 111 in the shell; an oil collecting device is assembled in one end of the shell 201 in the gravity direction;
the housing 201 is provided with a plurality of first air inlets 2011 for allowing the oil smoke ions to enter the housing 201.
The housing 201 is further provided with oil separation blocking pieces which are fixedly assembled and correspond to the first air inlets 2011 one by one; the oil separation baffle is arranged to form a certain included angle B along the upper end surface of the first air inlet 2011 and extend to the first arc-shaped sheet 2012, the angle of which is more than 0 degree and less than 180 degrees in the inner part of the shell 201 by taking the gravity direction of the air draft assembly 203 as the lower part and the opposite direction of the gravity direction of the air draft assembly 203 as the upper part.
Wherein, the air pressure generating piece 111 is arranged at the bottom of the air draft component 203 of the cigarette machine body 100;
wherein, the motor controller 300 is respectively and electrically connected with the air draft assembly 203 and the air pressure generating piece 111 of the cigarette machine body 100 and executes the self-cleaning operation.
Among other things, the self-cleaning operation includes a cleaning operation of the air extracting assembly 203 and the air pressure generating member 111.
The rotation direction of the air pressure generating member 111 generating the positive pressure is defined as the normal rotation;
wherein, the motor controller 300 controls the air draft assembly 203 and the air pressure generating member 111 to execute the following operations;
(1): controlling the rotating speed of the air draft assembly 203 to be the lowest rotating speed or keeping the rotating speed unchanged;
(2): controlling the positive rotating speed of the air pressure generating piece 111 to be adjusted to the maximum rotating speed within the time of T1 second and rotating for 5-60 seconds;
(3): stopping the rotation of the air pressure generating piece 111 for 1-10 seconds;
(4): repeating the steps (2) and (3) for N1 times in a circulating manner; n1 is more than or equal to 1, and N1 is a positive integer;
(5): controlling the air draft assembly 203 to stop working, controlling the positive rotation of the air pressure generating piece 111 to the maximum rotation speed within T2 seconds, and keeping for 5-60 seconds; t1 is more than or equal to 1, and T2 is more than or equal to 1;
in this example, T1 is 3 seconds. T1 is a number greater than 0. The value range of T1 is not limited to 3 seconds in this embodiment, and may also be selected to be 1 second, 2 seconds, 5 seconds, and the like, and may specifically be determined according to the user requirement. T1 is preferably in the range of 1-10 seconds.
A first oil collecting device 115 is also arranged; the first oil collecting device 115 is arranged in the bottom covering area at one end of the air pressure generating piece 111 in the gravity direction;
wherein the first oil collecting device 115 is arranged as an oil collecting cup;
wherein the motor controller 300 is set to BC630-15075;
the air pressure generating member 111 is provided with a rotating motor 102, a first rotating shaft 101, a rotating member 10 which can generate pressures in different directions by rotating in different directions; both ends of the rotating shaft are connected to the rotating motor 102 and the first rotating shaft 101, respectively.
The rotating member 10 is provided as a multi-step oil smoke separating body 103; the multi-step oil fume separation main body 103 is provided with a plurality of concentric tubes 110 with coincident center axes, and a connecting shaft 120 for connecting the concentric tubes 110 and the first rotating shaft 101;
wherein, the concentric tube 110 is fixedly connected with the connecting shaft 120.
Wherein, the outer end face of the concentric tube 110 for connecting with the connecting shaft 120 is defined as a first plane; establishing a plane coordinate system by taking the intersection point of the first plane and the central axis of the concentric tube 110 as an origin; and taking the middle axis as a y axis, taking the gravity direction as a y axis negative direction and taking the gravity reverse direction as a y axis positive direction; taking the horizontal direction as an x axis; and in the horizontal right direction, the positive direction of the x-axis.
Defining the concentric tubes 110 outward from the origin along the x-axis direction as a 1 st concentric tube 110, an i th concentric tube 110, an n-1 th concentric tube 110, and an n th concentric tube 110, wherein i is more than or equal to 2 and less than or equal to n, and n is a positive integer; the length of the concentric tube 110 in the negative y-axis direction is H.
The length of the 1 st concentric tube 110 along the negative direction of the y-axis is H 1 Said i The n-1 concentric tube 110 has a length H along the negative direction of the y-axis n-1 The length of the nth concentric tube 110 along the negative direction of the y-axis is H n ，H 1 Has the maximum value of H n The value of (c) is minimal.
Therein, 1.1H n ≤H i ≤10H n And 0.5H i-1 ≤H i ≤3H i-1 ；
Wherein the 1 st concentric tube 110 has a height H 1 Not more than 1m;
defining one end of the concentric tube 110, which is connected to the connecting shaft 120, as an inner air outlet 130, and defining the other end of the concentric tube 110 as an inner air inlet 140; the diameter of the end of the air outlet 130 within the concentric tube 110 is D with respect to the x-axis.
The diameter of the end of the inlet 140 in the concentric tube 110 is d with respect to the x-axis;
wherein, the diameter of the end part of the air outlet 130 in the 1 st concentric tube 110 is D (1),... The diameter of the end part of the air outlet 130 in the i st concentric tube 110 is D (i),... The diameter of the end part of the air outlet 130 in the n-1 st concentric tube 110 is D (n-1), and the diameter of the end part of the air outlet 130 in the n th concentric tube 110 is D (n);
wherein, the diameter of the end of the inlet 140 in the 1 st concentric tube 110 is d (1),... The diameter of the end of the inlet 140 in the i st concentric tube 110 is d (i),... The diameter of the end of the inlet 140 in the n-1 st concentric tube 110 is d (n-1), and the diameter of the end of the inlet 140 in the n st concentric tube 110 is d (n);
D(1)＞d(1)，......,D(i)＞d(i),......,D(n-1)＞d(n-1),......,D(n)＞d(n)；D(1)＜D(i)＜D(n-1)＜D(n)。
wherein, the multi-stage oil fume separation main body 103 is also provided with an oil fume adsorption separation blade; the oil fume adsorption separation blade is fixedly assembled on the outer wall surface of the end part of the air inlet 140 in the concentric tube 110; the oil smoke adsorption blocking sheet is arranged as an annular fan sheet 105 which extends outwards along any local area of the outer wall surface of the end part of the air inlet 140 in the concentric tube 110;
wherein, the included angle between the plane of the annular fan sheet 105 and the y axis is A, A is more than or equal to 20 degrees and less than 180 degrees; the number of the ring-shaped fan blades 105 is Q, and Q is a positive integer;
Q＝n
when Q = n, the ring-shaped fan sheets 105 are in one-to-one correspondence with the concentric tubes 110, and are defined as a first ring-shaped fan sheet 105, a second ring-shaped fan sheet 105, \8230 \ 8230 \ 1 annular fan sheet 105 and a Q-th ring-shaped fan sheet 105; and i is more than or equal to 2 and less than or equal to Q, and Q is a positive integer;
wherein the area of the ring sector 105 is S; defining the area of the first ring sector 105 as S1, the area of the second ring sector 105The area is defined as S2, \8230, the area of the ith annular fan blade 105 is defined as Si, \8230, the area of the Q-1 annular fan blade 105 is defined as S (Q-1), and the area of the Q-1 annular fan blade 105 is defined as S (Q); s1 is more than 0 and less than or equal to S2 and less than or equal to S (Q-1) and less than or equal to S (Q); wherein the ring sector 105 is further provided with a plurality of through holes 106; the total area of the through-holes 106 is defined as E Through-hole 106 ，E Through hole 106 ≤0.3S；
The multi-stage oil fume separation main body 103 is also provided with a secondary vortex generating assembly 107;
the secondary vortex generating assembly 107 is arranged to be an annular sheet which faces outwards along the wall surface of any local area of the concentric tube 110 and has a certain thickness M and extends along the negative direction of the y axis;
wherein, the number of the secondary vortex generating components 107 is m, m is more than or equal to 1, m is a positive integer
The secondary vortex generating assembly 107 is arranged between any concentric tube 110 and the annular fan 105;
wherein a hollow area for air flow to pass through is formed in any area of the annular sheet; wherein the hollow area is set to be rectangular hollow or moire hollow;
the area of the hollowed-out area is an S hollowed-out area, the area of the annular sheet is an S annular sheet, and the area of the S hollowed-out area is greater than or equal to 0 and less than the S annular sheet;
wherein, the plane of the secondary vortex generating component 107 is intersected with the y-axis, and the included angle is B, B is more than or equal to 10 degrees and less than or equal to 135 degrees;
wherein, the end part of the inner air outlet 130 of the concentric tube 110 is provided with an air collecting ring;
the gas collecting ring is provided with a second arc-shaped sheet 108 extending inwards along the end part of the inner gas outlet 130 of the concentric tube 110 in the y-axis direction; wherein, the included angle between the second arc-shaped piece 108 and the x axis is P, and P is more than 0 degree and less than 90 degrees.
Through setting up the gas collecting ring, the gas collecting ring sets up to second arc piece 108 to set up the contained angle as P with second arc piece 108 and interior gas outlet 130, be favorable to forming concentrated positive pressure air current.
The second oil collecting device 202 is configured as an oil collecting cup, which is common knowledge of those skilled in the art, and the detailed structure thereof will not be described again.
In this embodiment, the number of the ring-shaped fan blades 105 is set to be 3, and the ring-shaped fan blades 105 correspond to the concentric tubes 110 one by one, and are respectively defined as a first ring-shaped fan blade 105, a second ring-shaped fan blade 105, and a third ring-shaped fan blade 105; that is, the 1 st concentric tube 110 corresponds to the first annular sector 105; i.e., the 2 nd concentric tube 110 corresponds to the second ring sector 105; i.e. the 3 rd concentric tube 110 corresponds to the third ring sector 105.
In this embodiment, the number of the secondary vortex generating assemblies 107 is 2, and one end of each of the 2 secondary vortex generating assemblies 1071 is disposed at the end of the inner inlet 140 of the 2 nd concentric tube 110 and the end of the inner inlet 140 of the 3 rd concentric tube 110, respectively.
In this embodiment, the secondary vortex generating assembly 107 is disposed between any concentric tube 110 and the ring-shaped fan 105, but it should be noted that the secondary vortex generating assembly 107 is not limited to be disposed only between any concentric tube 110 and the ring-shaped fan 105, and may be disposed in the concentric tube 110 according to actual user requirements.
In this embodiment, the number of the secondary vortex generating assemblies 107 is 2, and 2 secondary vortex generating assemblies 107 are respectively disposed at the end of the inner air inlet 140 of the 2 nd concentric tube 110 and the end of the inner air inlet 140 of the 3 rd concentric tube 110. The oil stain attached to the pipe wall of the concentric pipe 110 can be cleaned by the eddy flow field generated by the secondary eddy generating assembly 107 through the high-speed rotation of the secondary eddy generating assembly 107, the oil stain is guided into the flow guide area of the annular fan sheet 105 again, the oil stain is cleaned out from the pipe wall of the concentric pipe 110, the oil smoke is prevented from being attached to the pipe wall of the concentric pipe 110, and meanwhile, the cleaning technology can achieve a perfect cleaning effect in the process of self-cleaning the range hood.
The smoke machine in the smoke machine for cleaning the smoke by utilizing the positive pressure and the negative pressure can separate the smoke by seven layers when the smoke is pumped into the smoke, and finally the almost clean gas is discharged through the gas outlet. The seven-layer separation is specifically as follows:
the seven-layer separation is specifically as follows:
first layer separation, inertial separation: the oil smoke enters the inside of the housing 201 through the first air inlet 2011 of the housing 201, and the oil smoke enters the first arc-shaped sheet 2012 after entering the first air inlet 2011 of the housing 201, because of the pressure difference between the inside of the housing 201 and the external environment and the abrupt change of the area of the first air inlet 2011, the speed of the air flow is accelerated, and the inertia momentum is relatively increased. And the oil smoke can form a very thin boundary layer around the arc-shaped sheet, and because the first air inlet 2011 of the shell 201 forms an included angle with the first arc-shaped sheet 2012, the oil smoke is forced to flow upwards and enter the oil smoke separator 100 after flowing downwards along the first arc-shaped sheet 2012, so that the heavier oil and the crude oil smoke flow field move downwards separately in the downward inertial motion and are collected in the second oil collecting device 202 at the bottom of the shell 201, and the first inertial separation is realized.
Second layer separation, vortex separation: the oil smoke particles separated by the first layer further undergo flow field separation from the upward flowing flow in the direction of the first arc-shaped sheet 2012, and the oil smoke particles cause an unstable flow field under the flow field separation, so as to further form a vortex. The flow field or the vortex can interact and influence with the adjacent flow field or the vortex, a continuously rotating flow field is formed on the first arc-shaped sheet 2012, and the rotating vortex reaches the maximum vortex amount. The remaining light oil smoke will not stop at the rotating vortex of the first arced sheet 2012 and accumulate to a certain weight, and the flow field will not support the weight of the oil drop and will fall down or flow along the first arced sheet 2012 to the second oil collecting device 202.
Third layer separation, centrifugal separation: the ring sector 105 rotates with the oil concentric tube 110 creating a centrifugal force that interacts with the fan's suction. After the first separation, the remaining light oil smoke firstly contacts the outermost end of the ring-shaped fan blade 105 and then enters the concentric tube 110 when entering the concentric tube 110, the centrifugal force at the outermost end of the ring-shaped fan blade 105 can enable a part of the fluid or the oil smoke particles to be separated or blocked to enter the concentric tube 110 and move outwards, then the fluid or the oil smoke particles are thrown onto the first arc-shaped sheet 2012 of the shell 201 at a high tangential velocity, and the oil smoke on the first arc is thrown onto the shell 201 again.
Fourth layer separation, inertial separation and centrifugal separation: inertial separation and centrifugal separation: after the third layer of separation, the remaining oil smoke with lighter weight is subjected to the centrifugal force and the attraction force at the same time, but the relative attraction force is larger than the centrifugal force. Some of the oil smoke will flow to the adjacent ring-shaped fan blades 105 through the through holes 106, 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 of the ring-shaped fan blades 105105 again at a higher tangential speed due to the centrifugal force effect, and will be thrown onto the housing 201 again.
Fifth layer separation, cyclonic centrifugal force and secondary vortex generation of concentric tubes 110: the inner wall of the concentric tube 110 rotates to form a cyclone, the concentric tube 110 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 rotate continuously, so that the oil smoke is captured and is prevented from escaping from the concentric pipe 110. When the attraction force and the centrifugal force are removed, the secondary vortex which continuously rotates and the oil smoke which moves along the wall of the concentric tube 110 in a high tangential line can flow downwards along the inner wall of the concentric tube 110 due to gravity.
Sixth layer separation, secondary vortex generation assembly 107 separation: the secondary vortex generating component 107 at one end of the concentric tube 110 generates flow field separation on the remaining oil smoke, and the oil smoke is captured by the vortex which is formed by blocking part of the oil smoke from flowing upwards and rotating automatically due to the instability of the flow field.
Seventh layer separation, air draft assembly 203 centrifugal separation: after the separation of the first four layers, a small amount of very light oil smoke particles are left to be discharged from the airflow formed by the rotation of the fan in the air draft assembly 203 due to pressure difference, the rotating fan forms centrifugal force to throw the remaining small amount of oil smoke particles to the inner wall of the fan, finally, almost clean gas is discharged outside through the air outlet, and meanwhile, the air draft assembly 203 is also ensured not to have excessive oil stains attached to the air draft assembly 203 in the daily use process. But also ensures the suction force of the air draft assembly 203 to the oil fume, and simultaneously facilitates the subsequent positive pressure cleaning of a small amount of attached oil stain.
The invention relates to a range hood for cleaning oil smoke by utilizing positive and negative pressure, which is provided with an air draft assembly and an air pressure generating piece which can rotate and generate positive pressure; the air pressure generating part is fixedly assembled at the bottom of the oil pumping smoke hole of the air draft assembly. The smoke machine for cleaning the oil smoke by utilizing the positive pressure and the negative pressure can realize the generation of the positive pressure and the negative pressure, wherein the oil smoke can be removed by utilizing the negative pressure during the working process of exhausting the oil smoke; after the oil smoke exhausting process is stopped, the attached oil stain can be cleaned out by generating negative pressure, and the oil smoke exhausting device has the characteristics of simple structure and convenience in use.
Example 2.
A smoke machine for cleaning oil smoke by using positive and negative pressure is the same as embodiment 1 in other structures, and the difference is that: as shown in fig. 11, Q =4, Q ≠ n, n =3, and the ring fan 105 is provided in 4 numbers.
An extra ring-shaped fan 105 is disposed on the outer wall surface of any local area of the 1 st concentric tube 110 between the inlet of the 2 nd concentric tube 110 and the inlet of the 1 st concentric tube 110 along the negative direction of the y-axis.
By adding an annular fan blade, the positive pressure degree generated is enhanced, and the performance of the cigarette machine capable of generating positive pressure and negative pressure is further improved.
Example 3.
A kind of cigarette machine which utilizes positive and negative pressure to clear up the oil smoke, the other structure is the same as any one of the embodiment 1 or 2, the difference lies in:
as shown in fig. 12 and 13, the rotary member 10 is provided with a sleeve 113, a first blade 112;
the first blade 112 is disposed in the sleeve 113;
the nozzle at one end of the sleeve 113 in the direction of gravity is defined as G Positive pipe orifice (ii) a The pipe orifice at the end of the sleeve 113 opposite to the gravity direction is defined as G Negative pipe orifice ；
Above, G Negative pipe orifice At the bottom of the cooking fume suction opening of the air draft assembly 203, and G Negative pipe orifice The distance between the bottoms of the oil fume suction openings of the air draft assembly 203 is J, and J is more than 0;
the inner wall surface of the sleeve 113 and the outer wall surface of the sleeve 113 are provided with the oil-repellent coating 104;
above, G Negative pipe orifice Is provided at the end partAn oil backflow prevention device 114 is arranged;
as mentioned above, the oil-falling prevention device 114 is arranged to have a certain inclination angle Z along G Negative pipe orifice The inner wall of the end portion faces the G Positive pipe mouth Direction G Positive pipe orifice An extension piece extending outwards in the direction, the extension length of the extension piece is less than G Negative pipe orifice 0.5 times the smallest diameter of the end;
can guarantee to take place the automatically cleaning in-process of piece 111 can not get rid of the convulsions subassembly 203 again with the greasy dirt again through setting up anti-oil-pouring device 114, can play effectual interception to the greasy dirt of piece 111 takes place to atmospheric pressure.
G is to be Positive pipe orifice Diameter is defined as R1, G Negative pipe orifice Is R2; r1 > R2.
The first blades 112 are substantially configured as blades capable of generating air flows with different air pressure directions and different air flows with different directions through rotation in different directions, and details of the specific structure are not repeated as common knowledge of those skilled in the art.
The air pressure generating piece is arranged as the blade and the sleeve, so that the maximum air pressure and air flow can be ensured to be generated, and the sleeve G Negative pipe orifice The mouth of pipe be located the oil extraction cigarette mouth bottom of convulsions subassembly, also guarantee that the greasy dirt of clearing up out from the convulsions subassembly can obtain effectual guide to prevent down oily device through setting up and can take place the adnexed greasy dirt on the piece with atmospheric pressure, be unlikely to be shifted to the convulsions subassembly again, guaranteed clean effect, reduced use cost.
Example 4.
A kind of smoke machine which uses the positive and negative pressure to clear the oil smoke, the other structure is the same as any one of the embodiment 1-3, the difference lies in: as shown in FIG. 14, R1 < R2;
through changing the pipe orifice diameters at the two ends of the sleeve, R1 is less than R2, the integral performance of the air pressure generated by the range hood for cleaning the oil smoke by using the positive pressure and the negative pressure is improved, and the further guidance of the cleaned oil stain is further improved.
Example 5.
A kind of smoke machine which uses the positive and negative pressure to clear the oil smoke, the other structure is the same as any one of the embodiment 1-4, the difference lies in: the motor controller 300 controls the air draft assembly 203 and the air pressure generating member 111 to perform the following operations;
(2-1): controlling the air draft assembly 203 to stop rotating;
(2-2): adjusting the air pressure generating piece 111 to the maximum rotating speed within the time T3, and rotating the air pressure generating piece in the forward direction for 5-60 seconds, wherein the time T3 is more than 0;
(2-3): the air pressure generating part 111 stops rotating, and the air draft assembly 203 is controlled to rotate for 1-10 seconds;
(2-4): controlling the air pressure generating piece 111 to rotate forwards for 5-60 seconds;
(2-5): controlling the air pressure generating piece 111 to stop rotating and keeping the air draft assembly 203 to start rotating for 1-10 seconds;
(2-6) controlling the air draft assembly 203 to stop working, adjusting the air pressure generating piece 111 to the maximum rotating speed within T4 time, and rotating the air pressure generating piece for 5-60 seconds in the forward direction, wherein T4 is more than 0;
(2-7) repeating the steps (2-2) and (2-6) N2 times in a circulating way; n2 is more than or equal to 1, and N2 is a positive integer.
In this embodiment, T3 is 3 seconds, and T4 is 3 seconds; t3 and T4 are numbers greater than 0. The value ranges of T3 and T4 are not limited to 3 seconds in this embodiment, and may also be selected from 1 second, 2 seconds, 5 seconds, and the like, and may specifically be determined according to the user requirement. The range of T4 is preferably 1-10 seconds.
In the embodiment, N2=5, by performing the operation method, the air draft assembly is controlled to stop suddenly, so that the oil fume particles can be attached to the outer wall surface of the air draft assembly with the minimum acting force by the generated inertia of the oil fume particles, and the difficulty in the self-cleaning process is further reduced; the air pressure generating piece is controlled to rotate reversely at the instantaneous maximum rotating speed, so that oil stains attached to the wall surface of the range hood can fall off due to the flow force of the fluid; the reverse rotation of the part takes place through stopping atmospheric pressure in the twinkling of an eye to carry out the forward rotation of minimum rotational speed, make the adnexed stubborn greasy dirt produce rocking or flowing of equidirectional not, reduced the adhesive force of stubborn greasy dirt on the cigarette machine, the further separation of the greasy dirt of being convenient for and cigarette machine, and through the repeated rotation repeatedly, further optimized the self-cleaning ability of cigarette machine.
Example 6.
A kind of smoke machine which uses the positive and negative pressure to clear the oil smoke, the other structure is the same as any one of the embodiment 1-5, the difference lies in:
as described above, the motor controller 300 controls the air draft assembly 203 and the air pressure generating member 111 to perform the following operations;
(3-1): controlling the air draft assembly 203 to rotate to the lowest rotation speed or keeping the rotation speed unchanged;
(3-2): controlling the rotating speed of the positive rotation of the air pressure generating piece 111 to be adjusted to the maximum rotating speed and keeping the rotating speed for 5 to 60 seconds;
(3-3): controlling the air pressure generating piece 111 to rotate reversely for 5-60 seconds;
(3-4): repeating the steps (3-2) and (3-3) for N3 times in a circulating manner; n3 is more than or equal to 1, and N3 is a positive integer;
(3-5): controlling the air draft assembly 203 to stop working, and circularly repeating the steps (3-2) and (3-3) for N4 times; n4 is greater than or equal to 1, and N4 is a positive integer.
Through continuous circulation and change atmospheric pressure and take place the rotation and the direction of rotation of piece and convulsions subassembly to the dynamics of rotation carries out effectual regulation, has further improved the clean dynamics to the greasy dirt that takes place the piece at atmospheric pressure attached to.
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 (10)

1. The utility model provides an utilize cigarette machine of positive negative pressure to carry out oil smoke clearance which characterized in that: oil in the fan is cleaned by positive pressure, oil in the oil-fume separator is cleaned by the action of negative pressure and centrifugal force, and the cleaned oil is collected in an oil collecting cup;
the rotating piece is arranged into a multi-stage oil fume separation main body; the multi-stage oil fume separation main body is provided with a plurality of concentric tubes with coincident center axes and a connecting shaft for connecting the concentric tubes; the concentric tube is fixedly connected with the connecting shaft;
the multistage oil fume separation main body is also provided with an oil fume adsorption separation blade; the oil fume adsorption separation blade is fixedly assembled on the outer wall surface of the end part of the air inlet in the concentric tube; the oil fume adsorption blocking sheet is an annular fan sheet which extends outwards along any local area on the outer wall surface of the end part of the air inlet in the concentric tube;
multistage oil smoke separation main part still is provided with the secondary vortex and generates the subassembly, the secondary vortex generates the subassembly and sets up to follow the local arbitrary region's of concentric tube wall is outwards just had certain thickness M and follows the annular form piece that the negative direction of y axle extends.
2. A machine as claimed in claim 1 for removing cooking fumes with positive and negative pressure, characterized in that: the cigarette making machine is provided with a cigarette making machine body, an air pressure generating piece and a motor controller, wherein the air pressure generating piece can generate air flows in different air pressure directions and different directions through rotation in different directions;
the air pressure generating piece is arranged below the air draft assembly of the cigarette machine body;
the motor controller is respectively connected with the air draft assembly of the cigarette machine body and the air pressure generating piece electrically, and controls the air draft assembly and the air pressure generating piece to work and cooperate to execute self-cleaning operation.
3. A machine as claimed in claim 2, wherein said machine is adapted to clean the cooking fumes under positive and negative pressure: the self-cleaning operation includes a cleaning operation of the air extracting assembly and the air pressure generating member.
4. A machine as claimed in claim 3 for removing cooking fumes from a cigarette by positive and negative pressure, wherein: defining the rotation direction of the air pressure generating piece generating positive pressure as positive rotation;
the motor controller controls the air draft assembly and the air pressure generating piece to execute the following operations;
(1): controlling the rotating speed of the air draft assembly to be the lowest rotating speed or keeping the rotating speed unchanged;
(2): controlling the positive rotating speed of the air pressure generating piece to be adjusted to the maximum rotating speed within T1 second and rotating for 5-60 seconds;
(3): stopping the rotation of the air pressure generating piece for 1-10 seconds;
(4): repeating the steps (2) and (3) for N1 times in a circulating manner; n1 is more than or equal to 1, and N1 is a positive integer;
(5): controlling the air draft assembly to stop working, controlling the positive rotation of the air pressure generating piece to the maximum rotation speed within T2 seconds, and keeping for 5-60 seconds; t1 is more than or equal to 1, and T2 is more than or equal to 1;
or
The motor controller controls the air draft assembly and the air pressure generating piece to execute the following operations;
(2-1): controlling the air draft assembly to stop rotating;
(2-2): adjusting the air pressure generating piece to the maximum rotating speed within T3 time, and rotating the air pressure generating piece forwards for 5-60 seconds, wherein T3 is more than 0;
(2-3): stopping the air pressure generating piece from rotating, and controlling the air draft assembly to rotate for 1-10 seconds;
(2-4): controlling the air pressure generating piece to rotate forwards for 5-60 seconds;
(2-5): controlling the air pressure generating piece to stop rotating, and keeping the air draft assembly to start rotating for 1-10 seconds;
(2-6) controlling the air draft assembly to stop working, adjusting the air pressure generating piece to the maximum rotating speed within T4 time, and rotating the air pressure generating piece forwards for 5-60 seconds, wherein T4 is more than 0;
(2-7) repeating the steps (2-2) and (2-6) N2 times in a circulating way; n2 is more than or equal to 1, and N2 is a positive integer;
or
Defining the positive pressure generating rotation direction of the air pressure generating piece as positive rotation;
the motor controller controls the air draft assembly and the air pressure generating piece to execute the following operations;
(3-1): controlling the air draft assembly to rotate to the lowest rotating speed or keeping the rotating speed unchanged;
(3-2): controlling the positive rotation speed of the air pressure generating piece to be adjusted to the maximum rotation speed and keeping the maximum rotation speed for 5-60 seconds;
(3-3): controlling the air pressure generating piece to rotate reversely for 5-60 seconds;
(3-4): repeating the steps (3-2) and (3-3) for N3 times in a circulating way; n3 is more than or equal to 1, and N3 is a positive integer;
(3-5): controlling the air draft assembly to stop working, and circularly repeating the steps (3-2) and (3-3) for N4 times; n4 is greater than or equal to 1, and N4 is a positive integer.
5. A machine as claimed in claim 4, for cleaning cooking fumes by positive and negative pressure, characterized in that:
a first oil collecting device is also arranged; the first oil collecting device is arranged at the bottom of the air pressure generating piece;
the first oil collecting device is arranged as an oil collecting cup;
the motor controller is set to be any one of ARM, DSP and BC 630-15075.
6. A machine as claimed in claim 5 for removing cooking fumes by positive and negative pressure, characterized in that:
the air pressure generating piece is provided with a rotating motor, a first rotating shaft and a rotating piece capable of generating pressure intensities in different directions through rotation in different directions;
and two ends of the rotating shaft are respectively connected with the rotating motor and the first rotating shaft.
7. A machine as claimed in claim 6 for removing cooking fumes by positive and negative pressure, characterized in that: the rotating piece is provided with a sleeve and a first blade;
the first blade is arranged in the sleeve;
defining the pipe orifice at one end of the sleeve in the gravity direction as G Positive pipe mouth (ii) a The pipe orifice at one end of the sleeve in the gravity opposite direction is defined as G Negative pipe orifice ；
The G is Negative pipe orifice Is positioned at the bottom of the oil fume suction port of the air draft assembly, and G Negative pipe orifice The distance between the oil fume suction port and the bottom of the oil fume suction port of the air draft assembly is J, and J is more than 0;
the inner wall surface of the sleeve and the outer wall surface of the sleeve are respectively provided with an oleophobic coating;
the G is Negative pipe orifice The end part of the oil return preventing device is provided with an oil return preventing device;
the oil falling prevention device is arranged to have a certain inclination angle Z edge G Negative pipe orifice The inner wall of the end portion faces the G Positive pipe mouth An extension piece extending outwards in the direction of G Negative pipe orifice 0.5 times the smallest diameter of the end;
will G Positive pipe orifice Diameter is defined as R1, G Negative pipe orifice Is R2;
r1 is more than R2; or
R1≤R2。
8. A machine as claimed in claim 6 for removing cooking fumes by positive and negative pressure, characterized in that:
the outer end face of the concentric tube, which is used for being connected with the connecting shaft, is defined as a first plane; establishing a plane coordinate system by taking the intersection point of the first plane and the central axis of the concentric tube as an origin; the center axis is used as a y axis, the gravity direction is used as a y axis negative direction, and the gravity reverse direction is used as a y axis positive direction; taking the horizontal direction as an x axis; and the direction from the horizontal to the right is the positive direction of the x axis;
sequentially defining concentric tubes outwards from an original point along the x-axis direction as a 1 st concentric tube, an i th concentric tube, an n-1 th concentric tube and an n th concentric tube, wherein i is more than or equal to 2 and less than or equal to n, and n is a positive integer; the length of the concentric tube along the negative direction of the y axis is H;
the length of the No. 1 concentric tube along the negative direction of the y axis is H 1 Said output is said, the length of the i-th concentric tube along the negative direction of the y-axis is H i A content of the n-1 concentric tube in a negative y-axis direction is H n-1 The length of the nth concentric tube along the negative direction of the y axis is H n ，H 1 Has the maximum value of H n The value of (d) is minimal;
1.1H n ≤H i ≤10H n and 0.5H i-1 ≤H i ≤3H i-1 ；
Height H of the 1 st concentric tube 1 Not more than 1m;
defining one end of the concentric tube, which is connected with the connecting shaft, as an inner air outlet, and defining the other end of the concentric tube as an inner air inlet; the diameter of the end part of the air outlet in the concentric tube is D relative to the x axis;
the diameter of the end part of the air inlet in the concentric tube is d relative to the x axis;
the diameter of the end part of an air outlet in the 1 st concentric tube is D (1),... The diameter of the end part of an air outlet in the i th concentric tube is D (i),. The diameter of the end part of an air outlet in the n-1 th concentric tube is D (n-1), and the diameter of the end part of an inner air outlet of the n th concentric tube is D (n);
the diameter of the end part of the air inlet in the 1 st concentric tube is d (1), the diameter of the end part of the air inlet in the i st concentric tube is d (i), the diameter of the end part of the air inlet in the n-1 st concentric tube is d (n-1), and the diameter of the end part of the air inlet in the n st concentric tube is d (n);
D(1)＞d(1)，......,D(i)＞d(i),......,D(n-1)＞d(n-1),......,D(n)＞d(n)；D(1)＜D(i)＜D(n-1)＜D(n)；
the included angle between the plane where the annular fan sheet is located and the y axis is A, and A is more than or equal to 20 degrees and less than 180 degrees; the number of the annular fan blades is Q, and Q is a positive integer;
q = n or Q ≠ n;
when Q = n, the ring-shaped fan sheets correspond to the concentric tubes one by one and are defined as a first ring-shaped fan sheet, a second ring-shaped fan sheet, a fan sheet of 8230, a fan sheet of i ' th ring-shaped fan sheet of 8230, a fan sheet of Q-1 ' th ring-shaped fan sheet and a fan sheet of Q ' th ring; and i is more than or equal to 2 and less than or equal to Q, and Q is a positive integer;
the area of the annular fan blade is S; the area of the first annular fan blade is defined as S1, the area of the second annular fan blade is defined as S2, \8230, the area of the ith annular fan blade is defined as Si, \8230, the area of the ith annular fan blade is defined as S (Q-1), and the area of the Q-1 annular fan blade is defined as S (Q); s1 is more than 0 and less than or equal to S2 and less than or equal to S (Q-1) and less than or equal to S (Q); the annular fan blade is also provided with a plurality of through holes; define the total area of the through-holes as E Through-hole ，E Through-hole ≤0.3S；
When Q is not equal to n, one end of the annular fan blade is fixedly arranged at any position of the outer wall surface of the concentric tube;
the number of the secondary vortex generating assemblies is m, m is more than or equal to 1, and m is a positive integer;
the secondary vortex generating assembly is arranged between any concentric tube and the annular fan sheet;
a hollow area for air flow to pass through is formed in any area of the annular sheet; the hollow area is set to be rectangular hollow or moire hollow;
the area of the hollowed-out area is an S hollowed-out area, the area of the annular sheet is an S annular sheet, and the area of the S hollowed-out area is greater than or equal to 0 and less than the S annular sheet;
the plane where the secondary vortex generating assembly is located is intersected with the y axis, the included angle is B, and B is more than or equal to 10 degrees and less than or equal to 135 degrees;
a gas collecting ring is arranged at the end part of an inner gas outlet of the concentric tube;
the gas collecting ring is arranged into a second arc-shaped sheet extending inwards along the end part of the inner gas outlet of the concentric tube in the y-axis direction; the included angle between the second arc-shaped sheet and the x axis is P, and P is more than 0 degree and less than 90 degrees.
9. A machine as claimed in claim 2 for removing cooking fumes from a cigarette by positive and negative pressure, wherein:
an oil collector is also arranged;
the oil collector is arranged in the integral outward radiation area of the cigarette machine body and the air pressure generating piece;
still be provided with oleophobic coating, oleophobic coating set up respectively in cigarette machine body, atmospheric pressure take place the piece the wall of oil collector.
10. A machine as claimed in claim 9 for removing cooking fumes using positive and negative pressures, wherein: the oil collector is provided with a second oil collecting device and a shell;
the shell is used for arranging the air draft assembly and the air pressure generating piece in the shell; the oil collecting device is assembled at one end of the shell in the gravity direction; the wall surface of the shell is provided with the oleophobic coating;
the shell is provided with a plurality of first air inlets used for enabling oil smoke ions to enter the interior of the shell; the second oil collecting device is arranged as an oil collecting cup;
the oleophobic coating is a nano coating or a Teflon coating;
the shell is also provided with oil separation blocking pieces which correspond to the first air inlets one by one and are fixedly assembled; the gravity direction of the air draft assembly is taken as the lower direction, and the reverse direction of the gravity direction of the air draft assembly is taken as the upper direction;
the oil separation baffle is a first arc-shaped piece which extends towards the inside of the shell along the upper end surface of the first air inlet with a certain included angle B, and B is more than 0 degree and less than 180 degrees.
CN201810188674.7A 2018-03-07 2018-03-07 Smoke machine for cleaning oil smoke by using positive and negative pressure Active CN108224528B (en)

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