CN107990378B - Multi-suction-inlet range hood and control method thereof - Google Patents
Multi-suction-inlet range hood and control method thereof Download PDFInfo
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- CN107990378B CN107990378B CN201710408326.1A CN201710408326A CN107990378B CN 107990378 B CN107990378 B CN 107990378B CN 201710408326 A CN201710408326 A CN 201710408326A CN 107990378 B CN107990378 B CN 107990378B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000779 smoke Substances 0.000 claims abstract description 106
- 239000003517 fume Substances 0.000 claims abstract description 26
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 5
- 239000006233 lamp black Substances 0.000 claims abstract description 5
- 230000007613 environmental effect Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 14
- 230000003044 adaptive effect Effects 0.000 claims 1
- 230000000391 smoking effect Effects 0.000 abstract description 4
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 238000010411 cooking Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 235000021395 porridge Nutrition 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a multi-suction inlet range hood, which comprises a fume collecting hood, a first machine case positioned above the fume collecting hood and a second machine case positioned below the fume collecting hood, wherein an upward concave fume collecting cavity is formed in the fume collecting hood, a first air inlet for communicating the fume collecting cavity with the first machine case is formed in the fume collecting hood, a second air inlet is formed in the front side of the second machine case to form a lower suction inlet, and the first machine case is communicated with the second machine case, and the range hood is characterized in that: and a rectifying plate is arranged below the first air inlet, and the rectifying plate and the smoke collecting cavity are matched to form an upper suction inlet. Also discloses a control method of the range hood. Combine the advantage of top-draft and side-draft for the lampblack absorber can have both advantages, through setting up the rectification board simultaneously, shunted the absorption with the oil smoke, enlarged the boundary range of drawing in the cigarette smoking, can draw in the oil smoke completely, can accelerate the flow of flue gas, thereby guide the oil smoke better.
Description
Technical Field
The invention relates to kitchen appliances, in particular to a multi-suction-inlet range hood.
Background
The range hood has become one of the indispensable kitchen appliances in modern families. The conventional range hood comprises a top suction type range hood and a side suction type range hood, wherein the top suction type range hood utilizes the principle of rising hot air to suck and discharge the naturally rising oil smoke generated during cooking, and the range hood has wider and wider application due to the advantages of neatness, light weight, small occupied space and the like, but the suction effect of a power source is reduced due to the fact that the power source is far away from a cooking bench, and the oil smoke cannot be completely sucked; the side-draft range hood is far away by utilizing vortex wind pressure, most of oil smoke near the cooking bench is absorbed in an arc form, adverse effects on human health can be reduced, the power source is near the cooking bench, the suction effect of the power source is basically not reduced, and the oil smoke rising speed is high, so that the oil smoke escaping upwards from a small number cannot be absorbed.
Therefore, some extractor hoods combining the top suction and side suction modes are also available at present, and the advantages of the top suction and the side suction are fully utilized to obtain a better suction effect. The invention discloses a range hood combining top suction and side suction, which is disclosed in China patent with the application number 201320250895.5, and comprises an inverted L-shaped case, wherein a fume collecting hood is arranged above the case, a vertically arranged fan is arranged in the fume collecting hood, a vertical air duct and a horizontal air duct are formed in the case, a first fume inlet is arranged at the bottom end of the vertical air duct and corresponds to side suction, a second fume inlet is arranged at the bottom surface of the horizontal air duct and corresponds to top suction, and an oil cup is arranged at the bottom of the case; as another example, the chinese patent application No. 201320124231.4 discloses a three air intake top wall type range hood, which comprises a hollow inverted L-shaped smoke collecting box, wherein the top of the smoke collecting box is provided with a decorative cover, an air duct is arranged in the decorative cover, a fan is arranged in the air duct, decorative glass is arranged in the middle of the front part of the vertical box body of the smoke collecting box, the vertical box body of the smoke collecting box is positioned at the lower part of the decorative glass and provided with a first inlet, the front part of the vertical box body of the smoke collecting box is positioned at the upper part of the decorative glass and provided with a second air inlet, and the lower part of the horizontal box body of the smoke collecting box is provided with a third air inlet.
In the top suction part of the range hood, the oil smoke absorbed by the fan enters from the air inlet after passing through the filter screen, so that the oil smoke is intuitively and effectively absorbed, the loss of heat energy is increased in the oil smoke absorbing process, and meanwhile, the possibility of escape of a large amount of oil smoke exists; the top suction and side suction parts only adopt one main fan, the oil smoke of the side suction parts cannot be accelerated to suck and flow, and the side suction parts have poor effect.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a multi-suction inlet range hood which improves the smoke gathering effect and the smoke absorbing efficiency and reduces the fuel gas consumption aiming at the problems existing in the prior art.
The second technical problem to be solved by the invention is to provide a control method of the multi-suction-inlet range hood.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a many sunction inlets range hood, includes collection petticoat pipe, is located the first quick-witted case of collection petticoat pipe top and is located the second machine case of collection petticoat pipe below, be formed with the collection cigarette chamber of upwards concave in the collection petticoat pipe, set up the first air intake with collection cigarette chamber and first machine case intercommunication on the collection petticoat pipe, the second air intake has been seted up to the second machine case front side and has been constituted the sunction inlet down, first machine case and second machine case intercommunication, its characterized in that: and a rectifying plate is arranged below the first air inlet, and the rectifying plate and the smoke collecting cavity are matched to form an upper suction inlet.
For the wind pressure of each sunction inlet of being convenient for adjust, be provided with the main fan in the first machine incasement, be provided with the auxiliary fan in the second machine incasement, range hood still includes the main control unit who is used for controlling main fan and auxiliary fan.
For the operation of the automatic control auxiliary fan of being convenient for, the front side bottom of collection petticoat pipe is provided with the sensor that is used for detecting the oil smoke, the sensor is connected with main control unit electricity.
Preferably, for the runner that is convenient for form sunction inlet and discharges fume down, avoid simultaneously with the grease of main fan and rectification board condensation, the second machine case includes preceding curb plate, posterior lateral plate and bottom plate, the top of preceding curb plate extends to the rear end bottom of rectification board, the top of posterior lateral plate extends to the rear side bottom of collection petticoat pipe, the bottom of preceding curb plate and posterior lateral plate is passed through the bottom plate and is connected, the oil drip hole has been seted up on the bottom plate, the bottom plate below is provided with the banding oil cup of adaptation.
In order to enable the lower suction inlet to be capable of sucking clean oil smoke to rise more closely to a curved surface when rising, thereby reducing escape of the oil smoke, and simultaneously better guiding grease to flow down, the front side plate is curved and extends longitudinally from front to back to form a curved surface.
For the oil smoke control ability of increase rectifying plate to bight, the rectifying plate is the rectangle that extends in left and right direction, each bight of rectifying plate is the fillet to the left and right both sides of rectifying plate all are outwards convex arc.
For the condition to two top of a kitchen range, carry out the oil smoke according to the culinary art state of different top of a kitchen range, at the second quick-witted case inboard, the position that corresponds with the second air intake, left and right side is provided with first intranet and second intranet side by side, still be provided with in the second quick-witted case respectively and be used for driving first intranet in left and right lateral direction moving first actuating mechanism, the second actuating mechanism of driving second intranet in left and right lateral direction removal, first actuating mechanism and second actuating mechanism are connected with main control unit electricity respectively.
For the operation of automatic control auxiliary fan and intranet of being convenient for, the front side bottom of collection petticoat pipe is provided with first sensor and the second sensor that is used for detecting the oil smoke, first sensor corresponds with first intranet position, the second sensor corresponds with second intranet position.
The first technical scheme adopted by the invention for solving the second technical problem is as follows: the control method of the range hood comprises the following steps:
1) When the range hood is started, the main fan defaults to the top suction mode to start;
2) The current environmental air flow changes, the sensor detects the environmental oil smoke to obtain a real-time temperature or concentration value t1 and transmits the real-time temperature or concentration value t1 to the main controller, and the main controller compares the real-time temperature or concentration value t1 with a stored upper limit preset value t 2:
2.1 If t1 is less than or equal to t2, the main controller judges that the current lampblack temperature is lower or the current lampblack absorber running state is not changed;
2.2 If t1 is more than t2, the main controller judges that the current oil smoke temperature is higher or the current oil smoke is larger, and the main controller controls the auxiliary fan to start and increases the rotating speed or gear of the main fan.
The second technical scheme adopted by the invention for solving the second technical problem is as follows: the control method of the range hood comprises the following steps:
1) When the range hood is started, the main fan defaults to a main mode for top suction and is started;
2) The current environmental air flow changes, the first sensor detects environmental oil smoke to obtain a first real-time temperature or concentration value a1, the second sensor detects environmental oil smoke to obtain a second real-time temperature or concentration value a2 and respectively transmits the second real-time temperature or concentration value a2 to the main controller, and the main controller compares the first real-time temperature or concentration value a1, the second real-time temperature or concentration value a2 with a stored upper limit preset value a 3:
2.1 If (1)The main controller judges that the current oil smoke temperature is lower or the current smoke is smaller, the running state of the current fan is not changed, and the first internal network and the second internal network are controlled to be in a fully closed state;
2.2 If (1)And the main controller judges that the current oil smoke temperature is higher or the current oil smoke is larger, and controls the auxiliary fan to start, so that the rotating speed or gear of the main fan is improved, and simultaneously the first inner net and the second inner net are controlled to be fully opened.
Preferably, in step 2.2), the difference magnitudes of the first real-time temperature or concentration value a1 and the second real-time temperature or concentration value a2 are also compared thereafter:
2.2.1 If |a1-a2| is less than or equal to m, wherein m is a stored second preset value, the first intranet and the second intranet are kept fully open;
2.2.2 If |a1-a2| > n and a1 is larger than a2, wherein n is a stored third preset value, the main controller controls the second intranet to be fully closed;
2.2.3 If m < |a1-a2|is less than or equal to n and a1 is more than a2, the main controller controls the second intranet to be at least partially closed.
Compared with the prior art, the invention has the advantages that: the advantages of top suction and side suction are combined, so that the range hood can have the advantages of both, and meanwhile, the range hood is provided with the rectifying plate to split and absorb the oil smoke, so that the boundary range of smoke gathering and smoking is enlarged, the oil smoke can be completely gathered, the flow of the oil smoke can be accelerated, and the oil smoke is guided better; meanwhile, by arranging the sensor for detecting the oil smoke and the auxiliary fan correspondingly arranged at the lower suction inlet, the smoking capacity of the suction inlet can be automatically controlled according to cooking conditions, for example, heat can be reduced to be absorbed when cooking and water heating are performed by small fire, so that the heat efficiency is improved, the gas consumption is reduced, and the user experience is improved.
Drawings
Fig. 1 is a schematic view of a structure of a first embodiment of a multi-suction port range hood according to the present invention;
fig. 2 is a sectional view of a first embodiment of the multi-suction port range hood of the present invention;
fig. 3 is a schematic view showing a structure of hiding a second casing and an oil cup in a first embodiment of the multi-suction port range hood according to the present invention;
fig. 4 is a control flow chart of the range hood of fig. 1;
fig. 5 is a schematic structural view (with an inner mesh opened) of a second embodiment of the multi-suction port range hood according to the present invention;
fig. 6 is a sectional view of a second embodiment of the multi-suction port range hood of the present invention;
fig. 7 is a partial structural view of a second embodiment of the multi-suction port range hood according to the present invention;
fig. 8 is a schematic view of a second embodiment of a multi-suction port range hood according to the present invention (the left side inner screen is closed);
fig. 9 is a control flow chart of the range hood of fig. 5.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Example 1
Referring to fig. 1 to 3, a multi-suction inlet range hood comprises a fume collecting hood 1, a first case 21 positioned above the fume collecting hood 1 and a second case 22 positioned below the fume collecting hood 1, wherein a main fan 23 is arranged in the first case 21, and an auxiliary fan 24 is arranged in the second case 22. For convenience of description, the terms "front", "rear", "left", "right" and the like are used hereinafter to refer to the orientation of the range hood relative to the user when the range hood is in use.
The smoke collecting hood 1 is internally provided with an upwardly concave smoke collecting cavity 11, the smoke collecting hood 1 is provided with a first air inlet 12, the smoke collecting cavity 11 is communicated with a first case 21 through the first air inlet 12, and a filter screen 13 is arranged at the first air inlet 12.
A rectifying plate 14 is arranged below the first air inlet 12, the rectifying plate 14 is connected with the fume collecting hood 1, the rectifying plate 14 is opposite to the first air inlet 12 and keeps a certain distance, and a fume channel for fume to pass through is formed between the rectifying plate 14 and the fume collecting hood 1. By arranging the rectifying plate 14, the oil smoke is split and absorbed, the boundary range of smoke gathering and absorbing is enlarged, a Venturi effect is formed between the rectifying plate 14 and the smoke collecting cover 1, the oil smoke is completely gathered, and the flow of the oil smoke can be accelerated, so that the oil smoke is guided to enter the first case 21 from the smoke collecting cavity 11 through the first air inlet 12. The smoke collecting cavity 11 and the rectifying plate 14 are matched to form upper suction inlets of front, left and right three circles.
The rectifying plate 14 may be rectangular, the length direction thereof is left and right directions, four corners of the rectifying plate 14 are rounded corners, and both left and right sides of the rectifying plate 14 are arc-shaped protruding outwards (away from the middle direction of the rectifying plate 14 and toward the fume collecting hood 1), so that the fume control capability of the rectifying plate 14 to corners is greatly enhanced.
The front bottom of the fume collecting hood 1 is provided with a sensor 15, and the sensor 15 can be a temperature sensor or a smoke sensor.
The second chassis 22 includes a front side plate 221, a rear side plate 222, and a bottom plate 223, wherein the top of the front side plate 221 extends to the rear end bottom of the rectifying plate 14, the top of the rear side plate 222 extends to the rear side bottom of the hood 1, and the bottoms of the front side plate 221 and the rear side plate 222 are connected by the bottom plate 223. Thus, a smoke passage communicating with the smoke collecting chamber 11 is formed in the second casing 2.
Preferably, the front side plate 221 extends in a curved manner in the longitudinal direction from front to back, i.e., the front side plate 221 is curved. The bottom plate 223 is provided with one oil dropping hole 225, or at least two oil dropping holes 225 are arranged at intervals along the bottom plate 223 in the left and right directions. An adapted strip-shaped oil cup 3 is arranged below the bottom plate 223. Thus, the condensed oil flowing down from the main fan 23 and the rectifying plate 14 is guided by the curved front side plate 221 and introduced into the oil cup 3 through the oil drain hole 225 in the bottom plate 223.
The front side plate 221 is provided with a second air inlet 224 at a position near the bottom to become a lower suction inlet. In the present embodiment, the first air inlet 12 is an opening, and the second air inlet 224 is a plurality of strip-shaped holes arranged in the left-right lateral direction, each of which extends in the longitudinal direction. Because the front side plate 221 is a curved surface, according to the coanda principle, the lower suction inlet is more closely attached to the curved surface to rise when the oil smoke which can be sucked cleanly rises, so that the escape of the oil smoke is reduced. In fig. 2, shorter arrows indicate the flow path of the condensed oil, and longer arrows indicate the flow path of the oil smoke flow.
The auxiliary fan 24 is located corresponding to the top of the second air inlet 224 or above the second air inlet 224. The auxiliary fan 24 may be an axial flow fan including a central rotation shaft 241 and at least three blades 242 disposed on the circumference of the rotation shaft 241, the rotation shaft 241 extending in the left and right lateral directions, the blades 242 rotating around the rotation shaft 241.
Referring to fig. 4, a control module is provided in the range hood (e.g., in the front side of the hood 1), the control module includes a main controller 41 and a memory 42, and the sensor 15, the main blower 23 and the auxiliary blower 24 are electrically connected to the main controller 41, so that the main controller 41 can control the main blower 23 and the auxiliary blower 24 according to the detection data of the sensor 15.
The control method of the range hood comprises the following steps:
1) When the range hood is started, the main fan 23 is started by default taking the top suction as a main mode;
2) The current environmental air flow changes, and the sensor 15 detects the environmental oil smoke to obtain a real-time temperature or concentration value t1 (for example, the temperature range is-10 ℃ to 100 ℃ C., or the oil smoke concentration is 50 ug/m) 3 ～5000ug/m 3 ) And transmitted to the main controller 41, the main controller 41 reads the upper limit preset value t2 (for example, the temperature range is 60-100 ℃ or the oil smoke concentration is 500 ug/m) stored in the memory 42 3 ～5000ug/m 3 ) The preset value is a threshold value of temperature or concentration, and the threshold value can be obtained through experiments:
2.1 If t1 is less than or equal to t2, the main controller 41 judges that the current oil smoke temperature is lower or the smoke is smaller, and considers that the current working conditions such as cooking with small fire or boiling water and porridge are not changed, namely the running state of the main fan 23 is not changed, namely the motor of the main fan is kept in the existing state (such as in a middle-low gear), the auxiliary fan 24 is not started, the oil smoke can be sucked and cleaned by the main mode of top suction of the oil smoke machine, and the auxiliary fan 24 is not started and has a certain valve function at the lower suction inlet, so that the smoke sucked by the lower suction inlet can be reduced, and the heat loss caused by the oil smoke suction close to a cooker is reduced;
2.2 If t1 > t 2), the main controller 41 determines that the current oil smoke temperature is higher or the smoke is larger, and exceeds the threshold value, and considers the working conditions such as quick-frying and the like, the oil smoke amount is larger, the range hood possibly has smoke leakage in a top suction mode, the main controller 41 controls the auxiliary fan 24 to start, the rotating speed or gear of the main fan 23 is improved, the range hood works in a side suction mode, the anti-interference capability can be increased, the oil smoke escape is reduced, and the user experience is improved.
Example two
Referring to fig. 5 to 8, in the present embodiment, the difference from the first embodiment is that, at a position corresponding to the second air intake port 224 inside the second casing 22, a first inner network 226 and a second inner network 227 are disposed in parallel on the left and right, and a first driving mechanism 228 for driving the first inner network 226 to move in the left and right lateral directions, and a second driving mechanism 229 for driving the second inner network 227 to move in the left and right lateral directions, respectively. The meshes of the two inner nets are matched with the strip-shaped holes of the second air inlet 224.
In this embodiment, first intranet 226 and second intranet 227 are on the same plane and may preferably be symmetrical. The first driving mechanism 228 includes a first driving motor 2281 and a first transmission screw 2282, the second driving mechanism 229 includes a second driving motor 2291 and a second transmission screw 2292, and the first inner net 226 and the second inner net 227 may be respectively matched with the corresponding transmission screws through nuts, so that after the driving motor is started, the transmission screws can drive the corresponding inner net to move. The two inner nets adopt independent driving mechanisms, and can be matched with the second air inlet 224 to realize the area change of the lower suction inlet such as full opening, half opening, full closing and the like, as shown in fig. 5, the lower suction inlet is in a full opening state, and fig. 8, the left side of the lower suction inlet is in a closing (half opening) state. The first driving motor 2281 and the second driving motor 2282 are each electrically connected to the main controller 41.
Correspondingly, the sensor 15 includes a first sensor 151 and a second sensor 152, where the first sensor 151 is located above the first intranet 226, corresponds to the first intranet 226 (e.g. all is located on the left side), and is used for detecting a change in temperature or concentration of the oil smoke on the left side corresponding to the first intranet 226, and the second sensor 152 is located above the second intranet 227, corresponds to the second intranet 227 (e.g. all is located on the right side), and is used for detecting a change in temperature or concentration of the oil smoke on the right side corresponding to the second intranet 227. Of course, the number of the first sensors 15 and the second sensors 152 may be two or more.
By adopting the structure, the intelligent control device can realize intelligent adjustment of the area of the air inlet and effectively use the negative pressure of the lower suction inlet according to the smoke and temperature difference of cooking according to the left and right sides on the basis of the first embodiment.
Referring to fig. 9, the control method of the range hood includes the steps of:
1) When the range hood is started, the main fan 23 is started by default taking the top suction as a main mode;
2) The current environmental air flow changes, and the first sensor 151 detects the environmental oil smoke to obtain a first real-time temperature or concentration value a1 (for example, the temperature range is-10 ℃ to 100 ℃ or the oil smoke concentration is 50 ug/m) 3 ～5000ug/m 3 ) The second sensor 152 detects the ambient soot to obtain a second real-time temperature or concentration value a2 (e.g., a temperature range of-10 deg.C to 100deg.C, or a soot concentration of 50 ug/m) 3 ～5000ug/m 3 ) And respectively transmitted to the main controller 41, the main controller 41 reads the upper limit preset value a3 (for example, the temperature range is 60-100 ℃ or the oil smoke concentration is 500 ug/m) stored in the memory 42 3 ～5000ug/m 3 ) The preset value is a threshold value of temperature or concentration, and the threshold value can be obtained through experiments:
2.1 If (1)The main controller 41 judgesIf the current oil smoke temperature is low or the smoke is small, the current fan running state is not changed when the current oil smoke temperature is considered to be the working conditions such as small fire cooking or water boiling and porridge boiling, namely, the motor of the main fan 23 keeps the current state (such as in a middle-low gear), the auxiliary fan 24 is not started (optional), the oil smoke can be sucked and cleaned by the range hood in a main mode of top suction, in addition, the first internal net 226 and the second internal net 227 are controlled to be in a fully closed state, the auxiliary fan 24 is not started, and a certain valve function is provided at a lower suction inlet, so that the smoke sucked by the lower suction inlet can be reduced, and the heat loss caused by the fact that the oil smoke is sucked close to a pot is reduced;
2.2 If (1)The main controller 41 determines that the current oil smoke temperature is higher or the current oil smoke is larger, and exceeds a threshold value, and considers that the current oil smoke temperature is higher under the working conditions such as quick-frying and the like, the oil smoke amount is larger, the range hood possibly has the smoke leakage under the main mode of top suction, the main controller 41 controls the auxiliary fan 24 to start, the rotating speed or gear of the main fan 23 is improved, the range hood works in the main mode of side suction, and simultaneously the first internal network 226 and the second internal network 227 are controlled to be fully opened, so that the anti-interference capability can be increased, the oil smoke escape is reduced, and the user experience is improved; thereafter, the difference between the first real-time temperature or concentration value a1 detected by the first sensor 151 and the second real-time temperature or concentration value a2 detected by the second sensor 152 is compared:
2.2.1 If |a1-a2| is less than or equal to m, where m is a second preset value stored in the memory 42 (e.g., the temperature range is 0 ℃ to 20 ℃, or the oil smoke concentration is 300 ug/m) 3 ～500ug/m 3 ) Main controller 41 does not act and still keeps first intranet 226 and second intranet 227 fully open;
2.2.2 If |a1-a2| > n and a1 > a2, where n is a third preset value stored in the memory 42 (e.g., a temperature range of 20 ℃ C. To 100 ℃ C., or a soot concentration of 500 ug/m) 3 ～5000ug/m 3 ) The main controller 41 controls the second intranet 227 to be fully closed, and the first intranet 226 side is used for full-force smoking;
2.2.3 If m < |a1-a2|is less than or equal to n and a1 > a2, then the main controller 41 controls the second inner net 227 to be at least partially closed, increasing the side fume extraction capacity of the first inner net 226.
Claims (11)
1. The utility model provides a many sunction inlets range hood, includes collection petticoat pipe (1), is located first quick-witted case (21) of collection petticoat pipe (1) top and is located second machine case (22) of collection petticoat pipe (1) below, be formed with the collection cigarette chamber (11) of indent upward in the collection petticoat pipe (1), set up first air intake (12) with collection cigarette chamber (11) and first machine case (21) intercommunication on the collection petticoat pipe (1), second machine case (22) front side has been seted up second air intake (224) and has been constituted the sunction inlet down, first machine case (21) and second machine case (22) intercommunication, its characterized in that: a rectifying plate (14) is arranged below the first air inlet (12), and the rectifying plate (14) and the smoke collecting cavity (11) are matched to form an upper suction inlet; the second air inlet (224) is a plurality of strip-shaped holes which are arranged in parallel in the left-right transverse direction, a first inner net (226) and a second inner net (227) are arranged in parallel in the left-right direction at the position corresponding to the second air inlet (224) on the inner side of the second machine case (22), meshes of the two inner nets are matched with the strip-shaped holes of the second air inlet (224), a first driving mechanism (228) which is used for driving the first inner net (226) to move in the left-right transverse direction is further arranged in the second machine case (22), a second driving mechanism (229) which is used for driving the second inner net (227) to move in the left-right transverse direction is further arranged in the second machine case (22), and the corresponding inner nets are driven by the driving mechanisms to move so that the area of the lower suction inlet is correspondingly changed.
2. The multi-suction port range hood of claim 1, wherein: a main fan (23) is arranged in the first chassis (21), an auxiliary fan (24) is arranged in the second chassis (22), and the range hood further comprises a main controller (41) for controlling the main fan (23) and the auxiliary fan (24).
3. The multi-suction port range hood according to claim 2, wherein: the front bottom of the fume collecting hood (1) is provided with a sensor (15) for detecting fume, and the sensor (15) is electrically connected with a main controller (41).
4. The multi-suction port range hood according to claim 2, wherein: the second machine case (22) comprises a front side plate (221), a rear side plate (222) and a bottom plate (223), wherein the top of the front side plate (221) extends to the bottom of the rear end of the rectifying plate (14), the top of the rear side plate (222) extends to the bottom of the rear side of the fume collecting hood (1), the bottoms of the front side plate (221) and the rear side plate (222) are connected through the bottom plate (223), an oil dropping hole (225) is formed in the bottom plate (223), and an adaptive strip-shaped oil cup (3) is arranged below the bottom plate (223).
5. The multi-suction port range hood of claim 4, wherein: the front side plate (221) is curved from front to back in the longitudinal direction.
6. The multi-suction port range hood according to any one of claims 1 to 5, wherein: the rectifying plate (14) is rectangular extending in the left-right direction, each corner of the rectifying plate (14) is a round corner, and the left side and the right side of the rectifying plate (14) are arc-shaped protruding outwards.
7. The multi-suction port range hood of any one of claims 2, 4 or 5, wherein: the first driving mechanism (228) and the second driving mechanism (229) are electrically connected with the main controller (41), respectively.
8. The multi-suction port range hood of claim 7, wherein: the front side bottom of collection petticoat pipe (1) is provided with first sensor (151) and second sensor (152) that are used for detecting the oil smoke, first sensor (151) corresponds with first intranet (226) position, second sensor (152) corresponds with second intranet (227) position.
9. A control method of a range hood according to claim 3, comprising the steps of:
1) When the range hood is started, the main fan (23) is started by default of taking top suction as a main mode;
2) The current environmental air flow changes, the sensor (15) detects the environmental oil smoke to obtain a real-time temperature or concentration value t1 and transmits the real-time temperature or concentration value t1 to the main controller (41), and the main controller (41) compares the real-time temperature or concentration value t1 with a stored upper limit preset value t 2:
2.1 If t1 is less than or equal to t2, the main controller (41) judges that the current lampblack temperature is lower or the current lampblack temperature is lower, and the current operating state of the range hood is not changed;
2.2 If t1 is more than t2, the main controller (41) judges that the current oil smoke temperature is higher or the current oil smoke is larger, the main controller (41) controls the auxiliary fan (24) to start, and the rotating speed or the gear of the main fan (23) is increased.
10. A control method of a range hood according to claim 8, comprising the steps of:
1) When the range hood is started, the main fan (23) is started by default taking the top suction as a main mode;
2) The current environmental air flow changes, the first sensor (151) detects environmental oil smoke to obtain a first real-time temperature or concentration value a1, the second sensor (152) detects environmental oil smoke to obtain a second real-time temperature or concentration value a2, the second real-time temperature or concentration value a2 is transmitted to the main controller (41) respectively, and the main controller (41) compares the first real-time temperature or concentration value a1, the second real-time temperature or concentration value a2 with a stored upper limit preset value a 3:
2.1 If (1)The main controller (41) judges that the current oil smoke temperature is lower or the current smoke is smaller, the running state of the current fan is not changed, and the first internal network (226) and the second internal network (227) are controlled to be in a totally-closed state;
2.2 If (1)The main controller (41) judges that the current oil smoke temperature is higher or the current oil smoke temperature is higher, the main controller (41) controls the auxiliary fan (24) to start, the rotating speed or gear of the main fan (23) is increased, and the first internal network (226) and the second internal network are controlled simultaneouslyThe two inner networks (227) are fully open.
11. The control method of a range hood according to claim 10, wherein in step 2.2), the difference between the first real-time temperature or concentration value a1 and the second real-time temperature or concentration value a2 is compared:
2.2.1 If |a1-a2| is less than or equal to m, wherein m is a stored second preset value, the first intranet (226) and the second intranet (227) are kept fully open;
2.2.2 If |a1-a2| > n and a1 > a2, wherein n is a stored third preset value, the main controller (41) controls the second intranet (227) to be totally closed;
2.2.3 If m < |a1-a2|n and a1 > a2, the main controller (41) controls the second intranet (227) to be at least partially closed.
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| CN201710408326.1A CN107990378B (en) | 2017-06-02 | 2017-06-02 | Multi-suction-inlet range hood and control method thereof |
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| CN201710408326.1A CN107990378B (en) | 2017-06-02 | 2017-06-02 | Multi-suction-inlet range hood and control method thereof |
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| CN108826399A (en) * | 2018-07-04 | 2018-11-16 | 华帝股份有限公司 | A kind of oil-net structure of range hood |
| CN110925847B (en) * | 2019-12-30 | 2022-01-14 | 宁波方太厨具有限公司 | Control method of range hood |
| CN112648664B (en) * | 2021-01-06 | 2022-01-25 | 宁波方太厨具有限公司 | Fume exhaust fan |
| CN113405132B (en) * | 2021-06-23 | 2024-07-09 | 海信(山东)厨卫有限公司 | Fume collecting hood and use method thereof |
| CN113639293A (en) * | 2021-08-31 | 2021-11-12 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113685871A (en) * | 2021-09-03 | 2021-11-23 | 味呱哈智能厨具(浙江)有限公司 | Control method and device of oil fume suction equipment and oil fume suction system |
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