CN113375204B - Range hood and control method thereof - Google Patents
Range hood and control method thereof Download PDFInfo
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- CN113375204B CN113375204B CN202110709881.4A CN202110709881A CN113375204B CN 113375204 B CN113375204 B CN 113375204B CN 202110709881 A CN202110709881 A CN 202110709881A CN 113375204 B CN113375204 B CN 113375204B
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- air inlet
- smoke
- fan assembly
- partition plate
- range hood
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- 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
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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
- F24C15/2078—Removing cooking fumes movable
- F24C15/2092—Removing cooking fumes movable extendable or pivotable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a range hood, which comprises a fume collecting hood and a fan system, wherein the bottom of the fume collecting hood is provided with an air inlet, the air inlet comprises a first air inlet arranged at the left side of the bottom of the fume collecting hood and a second air inlet arranged at the right side of the bottom of the fume collecting hood, and the range hood is characterized in that: the fan system sets up in the collection petticoat pipe, the fan system includes first fan subassembly and the second fan subassembly of two bilateral symmetry settings, first fan subassembly includes towards left side slope, corresponds the first input that sets up with first air intake, second fan subassembly includes towards right side slope, corresponds the second input that sets up with the second air intake. Also discloses a control method of the range hood. Compared with the prior art, the invention has the advantages that: the air flow direction change and the flow loss can be reduced, and direct suction and direct discharge are realized.
Description
Technical Field
The invention relates to an oil fume purification device, in particular to a range hood and a control method of the range hood.
Background
The range hood becomes one of indispensable kitchen household appliances in modern families, has the functions of sucking oil smoke from an air inlet through an impeller rotating at a high speed in a volute, filtering the oil smoke by using the impeller, and discharging the filtered oil smoke from an air outlet to finish the purification work of kitchen air, and the reasonable air inlet arrangement is favorable for improving the oil smoke suction effect, reducing the escape of the oil smoke and improving the quality of the kitchen air.
The utility model discloses a chinese utility model patent of application number 201711128069.2 discloses a double air inlet range hood and control method thereof, including the fan dustcoat, collection petticoat pipe and centrifugal fan, centrifugal fan's left side, the right side is formed with left side inlet air passageway and right side inlet air passageway respectively, collection petticoat pipe bottom is formed with left side air intake and right side air intake, collection petticoat pipe mid-mounting has the movable partition that can control the deflection, movable partition makes left side inlet air passageway and right side inlet air passageway mutual isolation under the state that does not control the deflection, movable partition makes left side inlet air passageway and right side inlet air passageway all isolated with left side air intake under the state that deflects to the maximum angle left, movable partition makes left side inlet air passageway and right side inlet air passageway all isolated with right side air intake under the state that deflects to the maximum angle right side.
The air intake on the collection petticoat pipe of above-mentioned patent is the right angle with centrifugal fan's input and arranges, and flow direction change and flow loss are all great when the air current gets into centrifugal fan's input.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a range hood, which can reduce the change of the airflow direction and the flow loss, and realize direct suction and direct discharge, aiming at the defects existing in the prior art.
The second technical problem to be solved by the present invention is to provide a control method for the above range hood.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a range hood, includes collection petticoat pipe and fan system, the air intake has been seted up to the bottom of collection petticoat pipe, the air intake is including seting up at the left first air intake in collection petticoat pipe bottom and seting up at the second air intake on collection petticoat pipe bottom right side, its characterized in that: the fan system sets up in the collection petticoat pipe, the fan system includes first fan subassembly and the second fan subassembly of two bilateral symmetry settings, first fan subassembly includes towards left side slope, corresponds the first input that sets up with first air intake, second fan subassembly includes towards right side slope, corresponds the second input that sets up with the second air intake.
In order to realize the slope setting of first input and second input to the realization directly inhales directly and arranges, first fan subassembly is from lower supreme slope towards the left side gradually, second fan subassembly is from lower supreme slope towards the right side gradually.
In order to can be just to the smoke source, promote the oil absorption cigarette effect to be convenient for lead oil, first air intake is by the bottom middle of the collection petticoat pipe upwards slope extension gradually to the left side direction, the second air intake is by the bottom middle upwards slope extension gradually to the right side direction of collection petticoat pipe.
In order to open or close the corresponding air inlet and improve the smoke collecting performance, the range hood further comprises a smoke baffle assembly, wherein the smoke baffle assembly comprises a first smoke baffle capable of turning over to open or close the first air inlet and a second smoke baffle capable of turning over to open or close the second air inlet.
In order to drive the smoke baffle plates to act, the range hood further comprises a first driving mechanism for driving the first smoke baffle plate and the second smoke baffle plate to act, and the first driving mechanism is provided with two smoke baffle plates which respectively correspond to the first smoke baffle plate and the second smoke baffle plate.
In order to realize the independence and the intercommunication of the first cavity and the second cavity of collection petticoat pipe inboard, range hood still includes the baffle assembly that can divide into the inboard of collection petticoat pipe about two regions, baffle assembly divide into the inboard of collection petticoat pipe the first cavity of holding first fan subassembly and the second cavity of holding second fan subassembly, baffle assembly includes first baffle and the second baffle that is located first baffle below, first baffle setting is between first fan subassembly and second fan subassembly, the second baffle can be in and make the respective independent closed state of first cavity and second cavity with the first baffle amalgamation to and the open mode of second baffle and first baffle dislocation and messenger first cavity and second cavity intercommunication.
In order to control the opening and closing of the gap, a gap is formed between the first partition plate and the inner bottom of the smoke collecting hood, and the upper end of the second partition plate is rotatably connected with the smoke collecting hood so as to rotatably open or close the gap.
In order to realize the rotation of the second clapboard, the range hood also comprises a second driving mechanism for driving the second clapboard to rotate.
In order to detect the oil smoke near each air inlet, the range hood further comprises a first sensor, a second sensor and a third sensor, wherein the first sensor and the second sensor can detect the concentration of the oil smoke and are used for controlling the first driving mechanism, the third sensor is used for detecting the concentration of the oil smoke between the first air inlet and the second air inlet, the first sensor is arranged on the left side of the first air inlet, the second sensor is arranged on the right side of the second air inlet, and the third sensor is arranged between the first air inlet and the second air inlet.
In order to control the size of the fume collecting hood in the horizontal direction and reduce the influence of the deflection angle of the outlet airflow of the fan system on the performance of the fan system, the inclination angles of the first fan assembly and the second fan assembly are beta, and the value range of beta is more than or equal to 5 degrees and less than or equal to 40 degrees.
In order to better adsorb oil fume pollutants flowing through each air inlet, the included angle between the air inlet section of the first input end and the air inlet section of the first air inlet and the included angle between the air inlet section of the second input end and the air inlet section of the second air inlet are theta, and the value range of theta is more than or equal to 5 degrees and less than or equal to 60 degrees.
In order to take account of the longitudinal size of the smoke collecting hood, the effective flow area of each air inlet, the stroke of each smoke baffle plate and the requirements on the first motion mechanism, the inclination angles of the first air inlet and the second air inlet are lambda, and the lambda ranges from 10 degrees to 45 degrees.
In order to gently guide in the fan system as far as possible with the oil smoke, improve the effective circulation volume of oil smoke, improve the turbulent phenomenon of fluid in the runner, range hood still includes first guide plate and second guide plate, first guide plate sets up between first air intake and first input, wherein one end of first guide plate and the left side inner wall connection that is located the collection petticoat pipe of first air intake top department, the other end of first guide plate and first fan subassembly are located the top part of first input and are connected, wherein one end of second guide plate and the right side inner wall connection that is located the collection petticoat pipe of second air intake top department, the other end and the second fan subassembly of second guide plate are located the top part of second input and are connected.
The technical solution adopted by the present invention to solve the second technical problem is as follows: a control method of the range hood is characterized in that: the method comprises the following steps:
1) Starting the range hood and starting the kitchen range;
2) And correspondingly controlling according to the opening state of the cooker:
2.1 When the left cooker is opened, the first fan assembly is opened and serves as main smoke exhaust power, the second smoke baffle is closed, the opening angle of the first smoke baffle is controlled through the oil smoke concentration at the left side of the first air inlet detected by the first sensor, and the angle of the second fan assembly and the second partition plate rotating rightwards is controlled through the oil smoke concentration between the first air inlet and the second air inlet detected by the third sensor;
2.2 When the cooker on the right side is opened, the second fan assembly is opened and serves as main smoke exhaust power, the first smoke baffle plate is closed, the opening angle of the second smoke baffle plate is controlled through the oil smoke concentration at the position, on the right side, of the second air inlet detected by the second sensor, and the angle of the first fan assembly and the second partition plate rotating to the left is controlled through the oil smoke concentration, between the first air inlet and the second air inlet, detected by the third sensor;
2.3 When the cookers on the left side and the right side are opened, the first fan assembly and the second fan assembly are opened, the first smoke baffle plate and the second smoke baffle plate are opened, and the rotating direction of the second partition plate is controlled according to the rotating speeds of the first fan assembly and the second fan assembly.
Preferably, in the step 2.1), when the left cooker is opened, the first driving mechanism on the left side controls the first smoke baffle to be opened to the initial angle alpha 0 And the first sensor detects that the oil smoke concentration at the left side of the first air inlet is c 1 The preset value of the left side oil smoke concentration is c a Comparison of c 1 And c a The size of (2): if 0 is less than or equal to c 1 ≤c a Then the opening angle alpha = alpha of the first smoke baffle plate is controlled 0 (ii) a Otherwise, alpha is increased along with the concentration of the oil smoke;
meanwhile, the third sensor detects that the oil smoke concentration between the first air inlet and the second air inlet is c 2 The preset value of the oil smoke concentration between the first air inlet and the second air inlet is c b Comparison of c 2 And c b The size of (c): if 0 is less than or equal to c 2 ≤c b If the second fan assembly does not work, the second clapboard rotates rightwards by an angle
Otherwise, the second fan component is started and the rotating speed is increased along with the concentration of the oil smoke,at the same time, the second driving mechanism controls the second clapboard to rotate rightwards and rotate by the angle->
The concentration of the oil smoke increases;
in the step 2.2), when the cooker on the right side is opened, the first driving mechanism on the right side controls the second smoke baffle to be opened to the initial angle alpha 0 ', the second sensor detects that the oil smoke concentration at the right side of the second air inlet is c 1 ', the preset value of the oil smoke concentration on the right side is c a ', comparison c 1 ' and c a ' size: if 0 is less than or equal to c 1 ’≤c a 'if the opening angle of the second smoke baffle is controlled to be alpha' = alpha 0 '; otherwise, alpha' is increased along with the concentration of the oil smoke;
meanwhile, the third sensor detects that the oil smoke concentration between the first air inlet and the second air inlet is c 2 ' the preset value of the oil smoke concentration between the first air inlet and the second air inlet is c b Comparison of c 2’ And c b If 0 is not more than c 2 ’≤c b If the first fan assembly does not work, the second clapboard rotates leftwards by a certain angle
Otherwise, the first fan assembly is started and the rotating speed is increased along with the concentration of the lampblack, and meanwhile, the second driving mechanism controls the second partition plate to rotate leftwards and be/is judged>
Increases with the concentration of the oil smoke.
Preferably, the first fan assembly comprises a first motor, the second fan assembly comprises a second motor, and in step 2.3), the corresponding rotating speed n is achieved through the first motor 1 Speed n corresponding to the second motor 2 To control the rotation direction of the second partition:
2.3.1 If n) is 1 ＝n 2 Then the second partition board rotates by an angle
2.3.2 If n) is 1 ＞n 2 If the first partition plate rotates towards the right side, the second driving mechanism controls the second partition plate to rotate towards the right side;
2.3.3 If n) 1 ＜n 2 And the second driving mechanism controls the second partition plate to rotate towards the left side.
Compared with the prior art, the invention has the advantages that: through the first input end which is obliquely arranged corresponding to the first air inlet and the second input end which is obliquely arranged corresponding to the second air inlet, direct suction and direct exhaust can be better realized, the oil smoke is ensured to be rapidly exhausted, and the local flow loss caused by the change of the flow direction is reduced; the first air inlet and the second air inlet are obliquely arranged, so that the first air inlet and the second air inlet can be opposite to a smoke source, the oil smoke absorption effect is improved, and oil guiding is facilitated; through setting up first guide plate and second guide plate to can utilize the coanda effect with the oil smoke of flowing through each air intake gently and leading-in fan system as far as possible perpendicularly, improve the effective circulation volume of oil smoke, improve the fluid disorder phenomenon in the runner.
Drawings
Fig. 1 is a structural schematic diagram of a range hood in a closed state according to an embodiment of the present invention;
fig. 2 is a structural schematic diagram of a range hood according to an embodiment of the present invention in a state of opening left and closing right sides;
fig. 3 is a structural schematic diagram of a range hood according to an embodiment of the present invention in an open state at two sides;
FIG. 4 is a front view of the range hood according to the embodiment of the present invention in a state where the left side is opened, the right side is closed, and the partition is located in the middle;
FIG. 5 is a front view of the range hood according to the embodiment of the present invention in a state of opening the left side, closing the right side, and rotating the partition board rightwards;
fig. 6 is a front view of the range hood of the embodiment of the present invention with the left side closed and the right side open and the partition plate in the middle state;
FIG. 7 is a left side closed, right side opened and left side rotated state front view of the range hood of the embodiment of the present invention;
FIG. 8 is a cross-sectional front view of the range hood of the embodiment of the present invention with both sides open and the partition rotated to the right;
FIG. 9 is a cross-sectional side elevation view of the range hood of the embodiment of the present invention with both sides open and the partition plate rotated to the left;
fig. 10 is a schematic view of a sectional state of the range hood according to the embodiment of the present invention, in which two sides are opened and the partition board is rotated rightwards.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used herein as terms of orientation or positional relationship, as shown in the accompanying drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that these directional terms are for illustrative purposes only and are not to be construed as limiting since the disclosed embodiments of the present invention can be positioned in different orientations, e.g., "upper" and "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1 to 3, a range hood includes a fume collecting hood 1, an oil cup 100 disposed in the middle of the bottom of the fume collecting hood 1, and a fan system.
The air inlet is seted up to the bottom of collection petticoat pipe 1, and the air inlet is including seting up in the left first air intake 11 in collection petticoat pipe 1 bottom and seting up in the second air intake 12 in collection petticoat pipe 1 bottom right side. The first air inlet 11 is inclined upwards gradually from the bottom middle of the fume collecting hood 1 towards the left side, and the second air inlet 12 is inclined upwards gradually from the bottom middle of the fume collecting hood 1 towards the right side.
The range hood further comprises a smoke baffle assembly, wherein the smoke baffle assembly comprises a first smoke baffle 31 capable of opening or closing the first air inlet 11 in a turnover mode and a second smoke baffle 32 capable of opening or closing the second air inlet 12 in a turnover mode. The rotating shaft of the first smoke baffle 31 and the rotating shaft of the second smoke baffle 32 both extend in the front-back direction. The range hood further comprises a first driving mechanism 4 for driving the first smoke baffle 31 and the second smoke baffle 32 to act. The first driving mechanism 4 has two parts, which are respectively disposed corresponding to the first smoke barrier 31 and the second smoke barrier 32.
Referring to fig. 10, each smoke barrier and the corresponding air inlet form an air inlet channel covering the smoke source, so that the oil dirt can be smoothly guided into the oil cup 100 by the obliquely arranged air inlet while the better oil smoke absorption effect is ensured. The inclination angle of the first air inlet 11 and the second air inlet 12 relative to the horizontal direction is lambda, the smaller the lambda value is, the larger the stroke when the smoke blocking plate moves to the same cage area, the higher the requirement on the driving mechanism 4 is, the larger the lambda value is, the smaller the effective flow area of the air inlet is, the size of the smoke collecting hood 1 in the vertical direction is increased, the cooking experience is influenced, and the preferred value range of lambda is preferably more than or equal to 10 degrees and less than or equal to 45 degrees in the embodiment.
The fan system is arranged in the smoke collecting hood 1 and comprises a first fan component 21 and a second fan component 22 which are arranged in bilateral symmetry. First fan subassembly 21 sets up the left side at second fan subassembly 22, and first fan subassembly 21 is from lower to upper slope towards the left side gradually, second fan subassembly 22 is from lower to upper slope towards the right side gradually. The inclination angles of the first fan assembly 21 and the second fan assembly 22 relative to the vertical direction are both beta, and considering the influence of the size of the horizontal direction of the range hood and the deflection angle of the airflow at the outlet of the fan assembly on the performance of the fan assembly, in this embodiment, the preferable value range of beta is preferably 5 degrees or more and 40 degrees or less.
In order to better realize direct exhaust and ensure quick oil smoke exhaust, and reduce local flow loss caused by flow direction change, the first fan assembly 21 includes a first input end 211 inclined towards the left and corresponding to the first air inlet 11, and the second fan assembly 22 includes a second input end 221 inclined towards the right and corresponding to the second air inlet 12. The included angle between the air inlet section of the first input end 211 and the air inlet section of the first air inlet 11, and the included angle between the air inlet section of the second input end 221 and the air inlet section of the second air inlet 12 are theta, the value range of theta is preferably 5 degrees to 60 degrees, and theta is as small as possible, so that oil smoke pollutants flowing through the inclined air inlets can be better adsorbed.
The inclined arrangement of each fan assembly is favorable for direct exhaust, but for a fan system with the same volume, the inclination angle is further increased, the left and right width of the fume collecting hood 1 can be widened, the deflection angle of fluid at the outlet of the fan assembly after being accelerated by the impeller of each fan assembly can be increased, the flow loss is increased, and the pneumatic noise is increased. The first guide plate 9 is arranged between the first air inlet 11 and the first input end 211, one end of the first guide plate 9 is connected with the left inner wall of the fume collecting hood 1 above the first air inlet 11, and the other end of the first guide plate 9 is connected with the upper part of the first fan assembly 21 above the first input end 211. One end of the second flow guiding plate 10 is connected to the right inner wall of the smoke collecting hood 1 above the second air inlet 12, and the other end of the second flow guiding plate 10 is connected to the upper portion of the second fan assembly 22 above the second input end 221. The first guide plate 9 and the second guide plate 10 are in arc transition with the smoke collecting hood 1 and the corresponding connection part of the fan assembly.
Each guide plate can smoothly and vertically guide the oil smoke flowing through each air inlet into the fan system as much as possible by utilizing the wall attachment effect, so that the effective circulation of the oil smoke is increased, and the phenomenon of fluid turbulence in a flow channel is improved; meanwhile, the inclined state and the transition arc of each guide plate can smoothly guide the accumulated oil to the inner wall of the fume collecting hood 1, and then the accumulated oil flows to the bottom side oil cup 100 of the fume collecting hood 1 from the inner wall of the fume collecting hood 1.
Referring to fig. 4 to 9, the range hood further includes a partition plate assembly 5 capable of dividing the inner side of the smoke collecting cover 1 into a left region and a right region. The partition plate assembly 5 divides the inside of the fume collecting hood 1 into a first chamber 13 accommodating a first fan assembly 21 and a second chamber 14 accommodating a second fan assembly 22. The partition assembly 5 includes a first partition 51 and a second partition 52 located below the first partition 51, the first partition 51 is disposed between the first fan assembly 21 and the second fan assembly 22, the second partition 52 can be in a closed state where the first partition 51 is assembled to make the first chamber 13 and the second chamber 14 independent of each other, and an open state where the second partition 52 is misaligned with the first partition 51 to make the first chamber 13 and the second chamber 14 communicate with each other. In the present embodiment, the upper end of the second partition plate 52 is rotatably connected to the smoke collecting hood 1, and the rotation shaft extends in the front-rear direction.
A gap 15 is formed between the first partition plate 51 and the inside bottom of the smoke collecting hood 1, and the second partition plate 52 is capable of rotatably opening or closing the gap 15. The range hood also comprises a second driving mechanism 6 for driving the second partition plate 52 to rotate.
Referring to fig. 10, the range hood further includes a first sensor 71 and a second sensor 72 for controlling the two first driving mechanisms 4 to detect the concentration of the oil smoke, and a third sensor 73 for detecting the concentration of the oil smoke between the first air inlet 11 and the second air inlet 12. The first sensor 71 is disposed at the left side of the first intake vent 11, the second sensor 72 is disposed at the right side of the second intake vent 12, and the third sensor 73 is disposed at the bottom of the smoke collecting hood 1 between the first intake vent 11 and the second intake vent 12. The sensors can be respectively fixed with the installation base of the range hood, such as a wall body, and can also be fixed with the smoke collecting hood 1 through a connecting mechanism.
In the drawings, the front side of the smoke collecting hood 1 is hidden for the convenience of showing the fan system and the partition plates.
The control method of the first smoke baffle 31, the second smoke baffle 32 and the second clapboard 52 of the range hood comprises the following steps:
1) Starting the range hood and starting the kitchen range;
2) Correspondingly controlling according to the opening state of the cooker:
2.1 Referring to fig. 4 to 5, when the left cooker is opened, for the single opening of the left cooker, the first fan assembly 21 is opened as the main power of smoke exhaust, the second fan assembly 22 is the auxiliary power, and the first driving mechanism 4 on the left controls the first smoke baffle 31 to be opened to the initial angle α 0 At this time, the second smoke baffle 32 is closed, and the first sensor 71 detects that the concentration of the smoke at the left side of the first air inlet 11 is c 1 The preset value of the left side oil smoke concentration is c a Comparison of c 1 And c a If 0 is not more than c 1 ≤ c a Then the opening angle α = α of the first smoke baffle 31 is controlled 0 Otherwise alpha increases linearly with the soot concentration, preferably without exceeding the maximum opening angle alpha 1 (the maximum opening angle may be predetermined); meanwhile, the third sensor 73 detects the oil smoke concentration between the first air inlet 11 and the second air inlet 12 as c 2 The preset value of the oil smoke concentration is c b Comparison of c 2 And c b If 0 is not more than c 2 ≤c b Then the second fan assembly 22 is not operating and the second baffle 52 is angled to the right
Otherwise, the second fan assembly 22 is turned on, and its rotation speed increases with the soot concentration, preferably linearly, and does not exceed the maximum rotation speed n a (the maximum rotation speed may be preset), and the second driving mechanism 6 controls the second partition plate 52 to rotate to the right, so that the rotating angle is greater or smaller than the preset value>
With increasing soot concentration, preferably linearly, and not exceeding the maximum opening angle->
(the maximum opening angle can be preset), so that the oil smoke suction effect is ensured by utilizing the mutual matching of the main fan assembly and the auxiliary fan assembly;
2.2 See fig. 6-7, when the right cooker is opened, for the right sideThe stove is opened singly, the second fan component 22 is opened to be used as main power of smoke exhaust, the first fan component 21 is auxiliary power, the second partition plate 52 rotates leftwards, the first smoke baffle plate 31 is closed, and the rest of the steps are the same as the control flow of the step 2.1), the second smoke baffle plate 32, the first fan component 21 and the second partition plate 52 are controlled in the same mode through the smoke concentration, and specifically, the first driving mechanism 4 on the right side controls the second smoke baffle plate 32 to be opened to the initial angle alpha 0 ', when the first smoke baffle 31 is closed, the second sensor 72 detects that the concentration of the oil smoke at the right side of the second air inlet 12 is c 1 ', the preset value of the oil smoke concentration on the right side is c a ', comparison c 1 ' and c a ' size, if 0. Ltoreq. C 1 ’≤c a 'then the opening angle alpha' = alpha of the second smoke baffle 32 is controlled 0 ', otherwise alpha' increases with soot concentration, preferably linearly, and does not exceed the maximum opening angle alpha 1 ' (the maximum opening angle may be predetermined); meanwhile, the third sensor 73 detects that the oil smoke concentration between the first air inlet 11 and the second air inlet 12 is c 2 ', the preset value of the oil smoke concentration is c b Comparison of c 2’ And c b If 0 is not more than c 2 ’≤c b Then the first fan assembly 21 is not operated and the second partition plate 52 is rotated to the left
Otherwise, the first fan assembly 21 is switched on and the rotation speed increases with the soot concentration, preferably linearly, and does not exceed the maximum rotation speed n b (the maximum rotation speed may be preset), while the second driving mechanism 6 controls the second partition plate 52 to rotate to the left and to rotate by the angle->
With increasing soot concentration, preferably linearly, and not exceeding the maximum opening angle +>
(the maximum opening angle may be preset); wherein alpha is 0 And alpha 0 ’、c a And c a ' canAre respectively equal; />
2.3 With reference to fig. 8 to 9, when the cookers on the left and right sides are all opened, each sensor does not work, the first fan assembly 21 and the second fan assembly 22 are opened, the first smoke baffle 31 and the second smoke baffle 32 are opened, the first fan assembly 21 comprises the first motor 212, the second fan assembly 22 comprises the second motor 222, the motor rotation speed is positively correlated with the flow channel resistance, so that the flow condition of the fluid in the flow channel can be judged through the rotation speed, and the rotation speed n corresponding to the first motor 212 and the second motor 222 is respectively used 1 、n 2 The size controls the rotation direction of the second partition plate 52:
2.3.1 If n) is 1 ＝n 2 Then, then
2.3.2 If n) is 1 ＞n 2 Indicating that the air duct resistance in the first chamber 13 is greater than the air duct resistance in the second chamber 14, the second fan assembly 22 is required to share a portion of the exhaust pressure, so that the second partition 52 is rotated to the right, preferably, at a rotation angle
k is constant, x = n 1 -n 2 F (x) can be obtained experimentally;
2.3.3 If n) is 1 ＜n 2 The second partition plate 52 is rotated toward the left side, preferably, by the angle thereof
k is constant, x = n 2 -n 1 。/>
Claims (10)
1. The utility model provides a range hood, includes collection petticoat pipe (1) and fan system, the air intake has been seted up to the bottom of collection petticoat pipe (1), the air intake is including seting up in left first air intake (11) in collection petticoat pipe (1) bottom and seting up in second air intake (12) on collection petticoat pipe (1) bottom right side, its characterized in that: the fan system is arranged in the smoke collecting hood (1), the fan system comprises a first fan assembly (21) and a second fan assembly (22) which are arranged in bilateral symmetry, the first fan assembly (21) comprises a first input end (211) which inclines towards the left side and is arranged corresponding to the first air inlet (11), and the second fan assembly (22) comprises a second input end (221) which inclines towards the right side and is arranged corresponding to the second air inlet (12);
the first fan assembly (21) is gradually inclined towards the left side from bottom to top, and the second fan assembly (22) is gradually inclined towards the right side from bottom to top;
the first air inlet (11) is inclined upwards and gradually extends from the middle of the bottom of the smoke collecting hood (1) to the left side direction, and the second air inlet (12) is inclined upwards and gradually extends from the middle of the bottom of the smoke collecting hood (1) to the right side direction;
the range hood further comprises a smoke baffle assembly, the smoke baffle assembly comprises a first smoke baffle (31) capable of being turned over to open or close the first air inlet (11) and a second smoke baffle (32) capable of being turned over to open or close the second air inlet (12), the range hood further comprises a first driving mechanism (4) for driving the first smoke baffle (31) and the second smoke baffle (32) to act, and the first driving mechanism (4) is provided with two parts which are respectively arranged corresponding to the first smoke baffle (31) and the second smoke baffle (32);
the range hood further comprises a partition plate assembly (5) capable of dividing the inner side of the fume collecting hood (1) into a left area and a right area, wherein the partition plate assembly (5) divides the inner side of the fume collecting hood (1) into a first chamber (13) for accommodating a first fan assembly (21) and a second chamber (14) for accommodating a second fan assembly (22), the partition plate assembly (5) comprises a first partition plate (51) and a second partition plate (52) positioned below the first partition plate (51), the first partition plate (51) is arranged between the first fan assembly (21) and the second fan assembly (22), the second partition plate (52) can be in a closed state in which the first partition plate (51) is spliced to enable the first chamber (13) and the second chamber (14) to be independent respectively, and in an open state in which the second partition plate (52) and the first partition plate (51) are staggered to enable the first chamber (13) and the second chamber (14) to be communicated;
the range hood further comprises a first sensor (71) and a second sensor (72) which can detect the oil smoke concentration and control the first driving mechanism (4), and a third sensor (73) which is used for detecting the oil smoke concentration between the first air inlet (11) and the second air inlet (12), wherein the first sensor (71) is arranged on the left side of the first air inlet (11), the second sensor (72) is arranged on the right side of the second air inlet (12), and the third sensor (73) is arranged between the first air inlet (11) and the second air inlet (12).
2. The range hood of claim 1, wherein: a gap (15) is formed between the first partition plate (51) and the inner bottom of the smoke collecting hood (1), and the upper end of the second partition plate (52) is rotatably connected with the smoke collecting hood (1) so as to rotatably open or close the gap (15).
3. The range hood of claim 2, wherein: the range hood also comprises a second driving mechanism (6) for driving the second partition plate (52) to rotate.
4. The range hood of claim 1, wherein: the inclination angles of the first fan assembly (21) and the second fan assembly (22) relative to the vertical direction are beta, and the value range of beta is more than or equal to 5 degrees and less than or equal to 40 degrees.
5. The range hood of claim 1, wherein: the included angle between the air inlet section of the first input end (211) and the air inlet section of the first air inlet (11) and the included angle between the air inlet section of the second input end (221) and the air inlet section of the second air inlet (12) are theta, and the value range of theta is more than or equal to 5 degrees and less than or equal to 60 degrees.
6. The range hood of claim 1, wherein: the inclination angles of the first air inlet (11) and the second air inlet (12) relative to the horizontal direction are lambda, and the value range of lambda is more than or equal to 10 degrees and less than or equal to 45 degrees.
7. The range hood according to any one of claims 1 to 6, wherein: the range hood further comprises a first guide plate (9) and a second guide plate (10), the first guide plate (9) is arranged between the first air inlet (11) and the first input end (211), one end of the first guide plate (9) is connected with the inner wall of the left side of the smoke collecting hood (1) located above the first air inlet (11), the other end of the first guide plate (9) is connected with the upper portion, located at the first input end (211), of the first fan assembly (21), one end of the second guide plate (10) is connected with the inner wall of the right side of the smoke collecting hood (1) located above the second air inlet (12), and the other end of the second guide plate (10) is connected with the upper portion, located at the second input end (221), of the second fan assembly (22).
8. A control method of a range hood according to claim 1, characterized in that: the method comprises the following steps:
1) Starting the range hood and starting the kitchen range;
2) And correspondingly controlling according to the opening state of the cooker:
2.1 When the left cooker is opened, the first fan assembly (21) is opened and serves as main smoke exhaust power, the second smoke baffle plate (32) is closed, the opening angle of the first smoke baffle plate (31) is controlled through the smoke concentration at the left side of the first air inlet (11) detected by the first sensor (71), and the angle of the second fan assembly (22) and the second partition plate (52) rotating rightwards is controlled through the smoke concentration between the first air inlet (11) and the second air inlet (12) detected by the third sensor (73);
2.2 When the cooker on the right side is opened, the second fan assembly (22) is opened and serves as main smoke exhaust power, the first smoke baffle plate (31) is closed, the opening angle of the second smoke baffle plate (32) is controlled through the smoke concentration at the right side of the second air inlet (12) detected by the second sensor (72), and the angle of the first fan assembly (21) and the second partition plate (52) rotating to the left is controlled through the smoke concentration between the first air inlet (11) and the second air inlet (12) detected by the third sensor (73);
2.3 When the cookers on the left side and the right side are opened, the first fan assembly (21) and the second fan assembly (22) are opened, the first smoke baffle plate (31) and the second smoke baffle plate (32) are opened, and the rotating direction of the second partition plate (52) is controlled according to the rotating speeds of the first fan assembly (21) and the second fan assembly (22).
9. The control method of the range hood according to claim 8, characterized in that: in the step 2.1), when the left cooker is opened, the first driving mechanism (4) on the left controls the first smoke baffle plate (31) to be opened to an initial angle alpha 0 The first sensor (71) detects that the oil smoke concentration at the left side of the first air inlet (11) is c 1 The preset value of the left side oil smoke concentration is c a Comparison of c 1 And c a The size of (2): if 0 is less than or equal to c 1 ≤c a Then the opening angle alpha = alpha of the first smoke baffle plate (31) is controlled 0 (ii) a Otherwise, alpha is increased along with the concentration of the oil smoke;
meanwhile, the third sensor (73) detects that the oil smoke concentration between the first air inlet (11) and the second air inlet (12) is c 2 The preset value of the oil smoke concentration between the first air inlet (11) and the second air inlet (12) is c b Comparison of c 2 And c b The size of (c): if 0 is less than or equal to c 2 ≤c b The second fan assembly (22) is not operated and the second partition (52) is angularly rotated to the right
Otherwise, the second fan assembly (22) is switched on and the rotating speed is increased along with the concentration of the lampblack, and meanwhile, the second driving mechanism (6) controls the second partition plate (52) to rotate rightwards and be/is selected>
The concentration of the oil smoke increases;
in the step 2.2), when the cooker on the right side is opened, the first driving mechanism (4) on the right side controls the second smoke baffle (32) to be opened to the initial angle alpha 0 ', the second sensor (72) detects that the oil smoke concentration at the right side of the second air inlet (12) is c 1 ', the preset value of the oil smoke concentration on the right side is c a ', comparison c 1 ' and c a The size of' is: if 0 is less than or equal to c 1 ’≤c a 'if yes, the opening angle alpha' = alpha of the second smoke baffle (32) is controlled 0 '; otherwise alpha' is accompanied by oilThe smoke density increases;
meanwhile, the third sensor (73) detects that the oil smoke concentration between the first air inlet (11) and the second air inlet (12) is c 2 ', the preset value of the oil smoke concentration between the first air inlet (11) and the second air inlet (12) is c b Comparison of c 2’ And c b If 0 is not more than c 2 ’≤c b The first fan assembly (21) is not operated, and the second partition plate (52) is rotated to the left
Otherwise, the first fan component (21) is started and the rotating speed is increased along with the concentration of the lampblack, and meanwhile, the second driving mechanism (6) controls the second partition plate (52) to rotate leftwards and be/is selected>
Increases with the concentration of the oil smoke. />
10. The control method of the range hood according to claim 8, wherein: the first fan assembly (21) comprises a first motor (212), the second fan assembly (22) comprises a second motor (222), and in the step 2.3), the corresponding rotating speed n of the first motor (212) is used 1 A rotation speed n corresponding to the second motor (222) 2 To control the rotation direction of the second partition (52):
2.3.1 If n) is 1 ＝n 2 Then the second partition plate (52) is rotated by an angle
2.3.2 If n) is 1 ＞n 2 The second driving mechanism (6) controls the second clapboard (52) to rotate towards the right side;
2.3.3 If n) is 1 ＜n 2 Then the second driving mechanism (6) controls the second partition plate (52) to rotate towards the left side.
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| CN202110709881.4A CN113375204B (en) | 2021-06-25 | 2021-06-25 | Range hood and control method thereof |
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| CN115839514B (en) * | 2023-02-24 | 2023-05-23 | 杭州老板电器股份有限公司 | Control method of range hood |
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| CN104566568A (en) * | 2013-10-16 | 2015-04-29 | 博西华电器（江苏）有限公司 | Range hood |
| CN107327890B (en) * | 2017-08-23 | 2024-03-22 | 上海多环油烟净化设备有限公司 | Dual-purpose circulating purifier |
| CN107504533B (en) * | 2017-08-23 | 2020-03-31 | 上海多环油烟净化设备有限公司 | Dual-purpose circulation purifier |
| CN109595644B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN207438686U (en) * | 2017-11-10 | 2018-06-01 | 宁波方太厨具有限公司 | A kind of range hood |
| CN207422306U (en) * | 2017-11-10 | 2018-05-29 | 宁波方太厨具有限公司 | A kind of range hood |
| CN108240654A (en) * | 2017-11-15 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of double air-inlet range hoods and its control method |
| CN209445454U (en) * | 2018-11-09 | 2019-09-27 | 九阳股份有限公司 | A kind of range hood |
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