1. A smoke collection hood, characterized in that, the smoke collection hood includes:

the box body is provided with an air inlet;

the plurality of baffles are arranged around and connected with the air inlet; and the number of the first and second groups,

the flow making structure is arranged at one end, far away from the air inlet, of the at least one baffle plate;

wherein the flow making structure comprises:

an air inlet in communication with the atmosphere;

a flow-producing chamber in communication with the air inlet;

the flow making fan assembly is arranged in the flow making cavity and is used for forming air entering the flow making cavity through the air inlet into pressure airflow; and a process for the preparation of a coating,

and the flow making nozzle is communicated with the flow making cavity and is used for ejecting the pressure airflow in the direction that one end of the baffle, which is far away from the air inlet, points to the air inlet.

2. A fume collecting hood according to claim 1 wherein said flow making structure further comprises: the cover plate is detachably connected with the baffle; the cover plate comprises a first side wall, a second side wall and a third side wall which are connected in sequence;

wherein the first side wall and the second side wall are positioned at one side of the baffle close to the box body, and the third side wall is positioned at one side of the baffle away from the box body;

the free end of the first side wall and the baffle are arranged at intervals to form the air inlet.

3. A fume collecting hood according to claim 2 wherein the free end of said first side wall is arcuate with its center of curvature located on a side adjacent said baffle;

the part of the baffle corresponding to the free end of the first side wall is arc-shaped, and the curvature center of the baffle is positioned on one side departing from the first side wall.

4. A fume collecting hood according to claim 2 wherein said flow making structure further comprises: a first curved plate disposed between the cover plate and the baffle plate;

the curvature center of the first curved plate is positioned at one side close to the baffle;

the first curved plate and the baffle plate form the flow control cavity.

5. A fume collecting hood according to claim 2 wherein said flow making structure further comprises: a telescoping corner structure connected to a free end of the third sidewall;

the telescopic angle structure and one end of the baffle plate far away from the air inlet form the flow-making nozzle.

6. A fume collection hood according to claim 5 wherein said telescopic corner structure comprises:

the second curved plate is inserted with the free end of the third side wall; the curvature center of the second curved plate is positioned at one side close to the baffle;

a rotating shaft connected with the second curved plate; and a process for the preparation of a coating,

and the stepping motor is connected with the rotating shaft and used for driving the rotating shaft to rotate so as to drive the second curved plate to move, so that the angle between the flow making nozzle and the plane where the baffle is located is adjusted.

7. A fume collection hood according to claim 1 wherein said induced draft fan assembly comprises:

the device comprises a driving motor and a through-flow impeller connected with the driving motor.

8. A fume collecting hood according to claim 7 wherein the length of said cross-flow impeller is greater than the length of said flow making nozzle.

9. A fume collecting hood according to any one of claims 1-8, characterized in that the fume collecting hood further comprises: a flow control device;

the damper control device includes: the power control device is connected with the flow making fan assembly and is used for controlling the working state of the flow making fan assembly;

under the condition that the telescopic angle structure comprises a second curved plate, a rotating shaft and a stepping motor,

the flow control device further includes: and the flow direction control device is used for controlling the working state of the stepping motor so as to adjust the angle between the flow control nozzle and the plane where the baffle is located through the rotating shaft.

10. A fume collecting hood according to claim 9 wherein the portion of said baffle plate corresponding to said flow making chamber has an opening;

the collection petticoat pipe still includes: the oil smoke sensor is arranged in the flow making cavity and positioned at the opening;

the oil smoke sensor is connected with the flow control device and used for detecting the oil smoke concentration of one side of the baffle plate, which is far away from the box body, determining an oil smoke concentration detection value and transmitting the oil smoke concentration detection value to the flow control device;

and the flow control device is used for controlling the working state of the flow control fan assembly according to the oil smoke concentration detection value and/or adjusting the angle between the flow control nozzle and the plane where the baffle is located.

11. A smoke collection cage according to claim 10 further comprising:

the protective box is sleeved on the oil smoke sensor, is provided with a detection port and is arranged in the flow making cavity; the detection port is opposite to the opening;

the filter screen is arranged at the detection port and used for filtering foreign matters in the oil smoke;

the driving wheel and the driven wheel are arranged in the protective box; and a process for the preparation of a coating,

the movable ring belt is arranged in the protective box and sleeved on the driving wheel and the driven wheel;

wherein, the oil smoke sensor is arranged on the moving endless belt.

12. A fume collecting hood according to claim 1 wherein said box is rectangular and said plurality of baffles is four in number; an included angle is formed between each of the at least two baffles and the corresponding side surface in the box body;

and one ends of the at least two baffles, which are far away from the air inlet, are respectively provided with the flow making structures.

13. A method for using a fume collecting hood, which is characterized by comprising the following steps:

periodically acquiring an oil smoke concentration detection value;

and starting the flow-making fan assembly to make pressure airflow under the condition that the oil smoke concentration detection values in the time period from the first moment to the second moment are all larger than a first threshold value.

14. The method according to claim 13, wherein when the flow fan assembly is started, the initial rotating speed of the flow fan assembly is set according to a gear used by the range hood, and/or the initial angle between the flow nozzle and the plane where the baffle is located is set according to a gear used by the range hood.

15. The method of claim 13 or 14, wherein after the activating the damper assembly, the method further comprises:

and under the condition that the oil smoke concentration detection value at the third moment is greater than a second threshold value, increasing the rotating speed of the flow control fan assembly, wherein the third moment is positioned after the second moment.

16. The method of claim 15, further comprising:

determining a rotation speed regulating quantity of the flow making fan assembly, wherein the rotation speed regulating quantity is equal to a difference value between a first rotation speed and an initial rotation speed, and the first rotation speed is the rotation speed of the flow making fan assembly after being increased;

and if the rotating speed regulating quantity of the flow control fan assembly is greater than or equal to a third threshold value, sending indication information to the range hood, wherein the indication information is used for indicating the range hood to improve the gear.

17. The method of claim 15, further comprising:

and under the condition that the oil smoke concentration detection values are smaller than a fourth threshold value in a time period from a fourth moment to a fifth moment, controlling the flow control fan assembly to operate at a second rotating speed, wherein the second rotating speed is the rotating speed of the flow control fan assembly at the fourth moment, and the fourth moment is positioned after the second moment.

Background

The range hood is also called as a suction range hood and is a kitchen appliance for purifying the kitchen environment. The fume collecting hood of the existing range hood is generally horizontal, arched or wedge-shaped, is arranged above a cooking range in a kitchen, and controls the fume generated by the cooking range within a certain range through the fume collecting hood so as to avoid the fume from overflowing and diffusing.

However, because the air flow rate on the surface of the fume collecting hood is very low, the outer side fume may not be sucked in time by the fan in the rising process of the fume generated by cooking, so that the outer side fume collides with the surface of the fume collecting hood, and part of the fume has the condition of escaping fume due to reverse escape. In addition, if the long-time contact of oil smoke and collection petticoat pipe leads to collection petticoat pipe surface to form the long-pending dirt, influences user experience and follow-up cleanness.

Disclosure of Invention

The embodiment of the application provides a fume collecting hood and a using method thereof, which are used for reducing overflow of oil smoke after collision with the fume collecting hood and condensation of the oil smoke on the surface of the fume collecting hood.

In a first aspect, there is provided a smoke collection hood comprising: the box body is provided with an air inlet; the plurality of baffles are arranged around and connected with the air inlet; the flow making structure is arranged at one end of the at least one baffle, which is far away from the air inlet; wherein, system flow structure includes: an air inlet in communication with the atmosphere; a flow-making chamber communicated with the air inlet; the flow making fan assembly is arranged in the flow making cavity and is used for forming air entering the flow making cavity through the air inlet into pressure airflow; and the flow-making nozzle is communicated with the flow-making cavity and is used for spraying pressure airflow on the surface of one side, which deviates from the box body, of the baffle plate and in the direction, which is towards the air inlet, of one end, which is far away from the air inlet, of the baffle plate.

The technical scheme that this application embodiment provided, through setting up the system structure of flowing, when the air enters into the system from the air intake and flows the chamber, the system flows fan assembly and makes the air form pressure air current, and the system flows the nozzle and deviates from pressure air current at the baffle the side surface of box, and the directional air intake's of the one end blowout of keeping away from the air intake along the baffle. Therefore, the pressure airflow is similar to 'sheath flow' after being sprayed out, and can form laminar flow with the air flow of the range hood main fan for sucking the oil smoke, so that the function of preventing the oil smoke from escaping due to oil smoke accumulation is achieved; meanwhile, the pressure airflow also forms a protective airflow layer between the oil smoke cluster and the smoke collecting hood, so that the overflow of the collided oil smoke and the smoke collecting hood and oil stains formed by the oil smoke accumulated on the surface of the smoke collecting hood are reduced to the greatest extent, and the user experience of the range hood is greatly improved.

In a second aspect, a method for using a smoke collecting hood is provided, which comprises the following steps: periodically acquiring an oil smoke concentration detection value; and under the condition that the oil smoke concentration detection values in the time period from the first moment to the second moment are all larger than a first threshold value, starting the flow-making fan assembly to make pressure airflow.

The technical scheme that this application embodiment provided, through periodic detection oil smoke concentration, when the oil smoke concentration detected value in the time quantum of first moment to second moment all is greater than first threshold value, represent oil smoke crowd outside oil smoke in time by range hood suction, with collection petticoat pipe surface production collision for some oil smoke reverse escape. In this case, the flow making fan assembly on the fume collecting hood is started to make the pressure airflow. The pressure airflow is sprayed out from the flow-making nozzle, is similar to 'sheath flow' after being sprayed out, can form laminar flow with the air flow of the range hood main fan for sucking the oil smoke, and plays a role in preventing the oil smoke from escaping due to oil smoke accumulation; meanwhile, the pressure airflow also forms a protective airflow layer between the oil smoke cluster and the smoke collecting hood, so that the overflow of the collided oil smoke and the smoke collecting hood and oil stains formed by the oil smoke accumulated on the surface of the smoke collecting hood are reduced to the maximum extent.

In a third aspect, a device for using a smoke collecting hood is provided, which comprises: the acquisition unit is used for periodically acquiring the oil smoke concentration detection value detected by the oil smoke sensor; and the processing unit is used for starting the flow making fan assembly to make pressure airflow under the condition that the oil smoke concentration detection value is greater than a first threshold value in the time period from the first moment to the second moment.

In a fourth aspect, there is provided an apparatus for using a collection hood, comprising one or more processors and one or more memories; one or more memories coupled to the one or more processors for storing computer program code comprising computer instructions which, when executed by the one or more processors, cause the air conditioner to perform the method of using a fume collection hood as provided by the second aspect described above.

In a fifth aspect, there is provided a computer readable storage medium comprising computer executable instructions which, when executed on a computer, cause the computer to perform the method of using a fume collection hood as provided in the second aspect above.

In a sixth aspect, there is provided a computer program product which, when run on a computer, causes the computer to perform the method of using a smoke collection hood as provided in the second aspect above.

For a detailed description of the second to sixth aspects and various implementations thereof in this application, reference may be made to the detailed description of the first aspect and its various implementations; moreover, for the beneficial effects of the second aspect to the sixth aspect and various implementation manners thereof, reference may be made to beneficial effect analysis in the first aspect and various implementation manners thereof, and details are not described here.

These and other aspects of the present application will be more readily apparent from the following description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a smoke collecting hood provided by an embodiment of the present application;

fig. 2 is a schematic structural diagram of a flow making structure of a smoke collecting hood according to an embodiment of the present application;

FIG. 3 is a schematic structural view of a flow making nozzle of a fume collecting hood according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a flow fan assembly of a smoke collecting hood according to an embodiment of the present application;

FIG. 5 is a schematic diagram illustrating sensor locations for a smoke collection hood according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a sensor system of a smoke collecting hood according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a sensor of a smoke collecting hood according to an embodiment of the present application;

FIG. 8 is a schematic flow chart illustrating a method of using a smoke collection hood according to an embodiment of the present disclosure;

FIG. 9 is a schematic flow chart diagram of another method of using a collection hood according to an embodiment of the present application;

FIG. 10 is a schematic flow chart diagram of another method of using a collection hood according to an embodiment of the present application;

FIG. 11 is a schematic flow chart diagram of another method of using a collection hood according to an embodiment of the present application;

fig. 12 is a schematic composition diagram of a device for using a smoke collecting hood according to an embodiment of the invention;

fig. 13 is a schematic hardware structure diagram of a device for using a smoke collecting hood according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only 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 thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "and/or" is only one kind of association relation describing an associated object, and means that three kinds of relations may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As described in the background art, the surface air flow rate of the smoke collecting hood of the existing range hood is very low, and the oil smoke outside the rising oil smoke group generated by cooking may not be sucked in time by the fan, so as to collide with the surface of the smoke collecting hood, so that part of the oil smoke has the condition of reverse escape to cause smoke leakage. Meanwhile, if the oil smoke contacts the smoke collecting hood for a long time, the surface of the smoke collecting hood forms accumulated dirt, and user experience and subsequent cleaning are affected.

In order to solve the technical problem, the embodiment of the application provides a smoke collecting hood, through setting up the system structure of flowing, when the air enters into the system from the air intake and flows the chamber, the system flows fan subassembly and makes the air form pressure air current, and the system flows the nozzle and deviates from pressure air current at the baffle the side surface of box, and the directional air intake's of the one end of keeping away from the air intake direction blowout along the baffle. Therefore, the pressure airflow is similar to 'sheath flow' after being sprayed out, and can form laminar flow with the air flow of the range hood main fan for sucking the oil smoke, so that the function of preventing the oil smoke from escaping due to oil smoke accumulation is achieved; meanwhile, the pressure airflow also forms a protective airflow layer between the oil smoke cluster and the smoke collecting hood, so that the overflow of the collided oil smoke and the smoke collecting hood and oil stains formed by the oil smoke accumulated on the surface of the smoke collecting hood are reduced to the greatest extent, and the user experience of the range hood is greatly improved.

The embodiment of the present application provides a smoke collecting hood, as shown in fig. 1, the smoke collecting hood 100 includes:

the housing 1 has an air inlet 11 (not shown in fig. 1).

And the plurality of baffles are arranged around and connected with the air inlet.

And the flow making structure 3 is arranged at one end of the at least one baffle plate, which is far away from the air inlet.

Optionally, the box body 1 is rectangular, the number of the baffles 2 is four, and at least two baffles 2 form an included angle with the corresponding side surface in the box body 1; and one ends of the at least two baffles 2 far away from the air inlet 11 are respectively provided with a flow making structure 2.

As shown in fig. 2, the flow control structure 3 includes an air inlet 31 communicating with the atmosphere, a flow control chamber 32 communicating with the air inlet 31, a flow control fan assembly 33 disposed in the flow control chamber 32, and a flow control nozzle 34 communicating with the flow control chamber 32.

Optionally, the flow control structure 3 further includes a cover plate 35, and the cover plate 35 is detachably connected to the baffle 2.

In some embodiments, the cover plate 35 includes a first sidewall 351, a second sidewall 352, and a third sidewall 353. The first and second side walls 351 and 352 are located on the side of the baffle 2 close to the box 1, and the third side wall 353 is located on the side of the baffle 2 facing away from the box 1.

Optionally, the first side wall 351, the second side wall 352 and the third side wall 353 are integrally formed and fixedly connected, and the cover plate 35 formed by connecting the first side wall 351, the second side wall 352 and the third side wall 353 just covers the baffle 2.

The free end of the first sidewall 351 and the baffle 2 are spaced apart from each other to form the air inlet 31.

Alternatively, the length of the air inlet 31 is the same as the length of the first sidewall 351. Alternatively, the length of the air inlet 31 may be slightly less than the length of the first sidewall 351.

Alternatively, the free end of the first sidewall 351 may be of any shape. Illustratively, the free end of the first sidewall 351 is arc-shaped, and the center of curvature thereof is located on the side close to the baffle 2; accordingly, the portion of the baffle 2 corresponding to the free end of the first sidewall 351 is arc-shaped, and the curvature center thereof is located at the side away from the first sidewall 351. That is, the shape of the intake port 31 is a curved neck shape in which the intake front section is lower than the intake rear section to prevent deposition of air dust in the intake port.

Optionally, the flow control structure 3 further includes a first curved plate 36 disposed between the cover plate 35 and the baffle 2, a curvature center of the first curved plate 36 is located at a side close to the baffle 2, and the first curved plate 36 is connected to the first side wall 351 and the second side wall 352 respectively to form the flow control chamber 32 with the baffle 2.

Optionally, the flow control structure 3 further includes a telescopic corner structure 37 connected to the free end of the third side wall 353, and the telescopic corner structure 37 and the end of the baffle plate far away from the air inlet 11 of the flow control structure 3 form the flow control nozzle 34.

The first curved plate is arranged to enable the flow making cavity to form a fluid design, the flow making requirement is met, the flow making cavity is separated from the smoke collecting hood cavity, isolation between the flow making cavity and the display control part of the range hood is achieved, and occupied space of products is saved. Meanwhile, the first curved plate forms a flow making cavity by using the baffle, the telescopic angle structure forms a flow making nozzle by using the baffle, and the structure of the smoke collecting hood is simplified by using the shared baffle.

The application provides a collection petticoat pipe, through setting up the system structure of flowing, when the air enters into the system from the air intake and flows the chamber, the system flows fan assembly and makes the air form pressure air current, and the system flows the nozzle and deviates from pressure air current at the baffle a side surface of box, and the direction blowout of the directional air intake of one end of keeping away from the air intake along the baffle. Therefore, the pressure airflow is similar to 'sheath flow' after being sprayed out, and can form laminar flow with the air flow of the range hood main fan for sucking the oil smoke, so that the function of preventing the oil smoke from escaping due to oil smoke accumulation is achieved; meanwhile, the pressure airflow also forms a protective airflow layer between the oil smoke cluster and the smoke collecting hood, so that the overflow of the collided oil smoke and the smoke collecting hood and oil stains formed by the oil smoke accumulated on the surface of the smoke collecting hood are reduced to the greatest extent, and the user experience of the range hood is greatly improved.

Alternatively, as shown in fig. 3, the telescopic corner structure 37 includes a second curved plate 371 inserted into the free end of the third side wall 353; a rotating shaft 372 connected with the second curved plate, and a stepping motor 373 connected with the rotating shaft 372.

Wherein the inside of the third side wall 353 is a hollow structure so that the second curved plate can be inserted into the third side wall, and the center of curvature of the second curved plate 371 is located at a side close to the baffle 2.

One end of the stepping motor 373 is connected to the rotating shaft 372, and when the stepping motor 373 operates, the second curved plate 371 is driven to move, so as to adjust the angle between the flow control nozzle 34 and the plane where the baffle 2 is located.

Alternatively, as shown in fig. 4, the flow fan assembly 33 includes a driving motor 331, and a cross-flow impeller 332 connected to the driving motor 331.

Because the through-flow impeller has the characteristic that the axial length is not limited, in the embodiment of the application, the length of the through-flow impeller is larger than that of the flow-making nozzle, the width of pressure airflow is ensured to be enough to cover the surface of the fume collecting hood, and the oil fume is prevented from escaping to the maximum extent. Meanwhile, the through-flow impeller has uniform air outlet, and the air flow penetrates through the impeller and is subjected to the force of the blades twice, so that the air flow has higher pressure than other impellers at the same rotating speed, the row spacing of the air flow can be farther, and the pressure air flow can play a better constraint role on oil smoke.

Further, the fume collecting hood 100 further includes: and a damper control device.

The flow control device comprises a power control device connected to the flow fan assembly 33 for controlling the operating state of the flow fan assembly.

For example, because the suction force generated to the air by the range hood fan at different gears is different, the power control device can set different flow-making fan rotating speeds according to different gears of the range hood fan.

Optionally, in a case that the telescopic corner structure 37 includes the second curved plate 371, the rotating shaft 372 and the stepping motor 373, the flow control device further includes: and a flow direction control means for controlling the operation state of the stepping motor 373 to adjust the angle between the flow control nozzle 34 and the plane of the baffle 2 via the rotating shaft 372.

For example, the flow direction control device can adjust the angle between the flow control nozzle 34 and the plane of the baffle 2 according to different gears of the range hood.

In some embodiments, the flow control device can be connected with a control device of the range hood. The control device of the range hood can send corresponding information to the flow control device, so that the flow control device can know the working state of the range hood (for example, whether the range hood is currently in the working state or the closed state, etc.).

In a possible implementation mode, when the range hood starts to work, the power control device sets the rotating speed of the flow control fan assembly according to the working gear of the range hood, flow control is started, the flow speed of pressure airflow spraying is controlled, the flow direction control device controls the rotating angle of the stepping motor according to the working gear of the range hood, and therefore the angle of the flow control nozzle is adjusted through controlling the rotating shaft, and oil fume overflow is reduced to the greatest extent. Optionally, when the range hood stops working, the flow control system stops working immediately, or the flow control system stops working after working for a preset time.

The embodiment of the application improves the protective effect of the pressure airflow on the fume collecting hood and reduces the oil fume overflow as much as possible by adjusting the flow speed of the pressure airflow and the spraying angle of the pressure airflow.

In some embodiments, as shown in fig. 5, the portion of the baffle plate 2 corresponding to the damper chamber 32 has an opening 21. The fume collection hood 100 also includes a fume sensor 38 disposed within the airflow chamber 32 and at the opening 21.

The oil smoke sensor 38 is connected to the flow control device, and is configured to detect an oil smoke concentration at a side of the baffle 2 away from the box 1, generate an oil smoke concentration detection value, and transmit the oil smoke concentration detection value to the flow control device, and the flow control device controls a working state of the flow control fan assembly 33 according to the oil smoke concentration detection value, and/or adjusts an angle between the flow control nozzle 34 and a plane where the baffle 2 is located. The specific implementation manner thereof can refer to the embodiments shown in fig. 8 to 10.

Optionally, as shown in fig. 6 and 7, the smoke collecting cover 100 further includes: and the protective box 39 is sleeved on the oil smoke sensor 38.

Illustratively, the guard box 39 includes a detection port 391, a filter screen 392, a drive wheel 393, a driven wheel 394, and a moving endless belt 395. Wherein, detection port 391 sets up in airflow cavity 32, and detection port 391 is relative with opening 21 to detect the oil smoke concentration of the oil smoke that gets into from opening 21. The filter screen 392 is arranged at the detection port 391 and used for filtering foreign matters in the oil smoke. The driving wheel 393 and the driven wheel 394 are arranged in the protection box 39, the moving endless belt 395 is sleeved on the driving wheel 393 and the driven wheel 394, and the oil smoke sensor 38 is arranged on the moving endless belt 395.

Optionally, the soot sensor 38 may be moved on the moving endless belt 395 to detect soot concentrations at different locations.

For example, when the range hood is started at a certain gear, the initial position of the oil smoke sensor is the position where the oil smoke sensor is located when the range hood operates at the gear last time. If the range hood is operated for the first time, the position of the oil smoke sensor is positioned in the middle of the movable ring belt.

Based on the smoke collecting hood provided by the above embodiment, as shown in fig. 8, an embodiment of the application provides a use method of the smoke collecting hood, and the method includes:

s101, periodically acquiring oil smoke concentration detection values.

Optionally, the oil smoke concentration is periodically detected by an oil smoke sensor arranged on the smoke collecting cover so as to determine the oil smoke concentration detection value. The detection period can be preset or can be set by a user. For example, the detection period may be 1S, 0.5S, etc., which is not limited.

S102, starting the flow-making fan assembly to make pressure airflow under the condition that the oil smoke concentration detection values in the time period from the first moment to the second moment are all larger than a first threshold value.

It should be appreciated that the pressurized airflow created by the modulated flow fan assembly may be automatically ejected from the modulated flow nozzle.

Optionally, the duration of the time period from the first time to the second time and the first threshold may be set by a user, or may be default by a system, and the embodiment of the present application is not limited herein.

In the embodiment of the application, when the flow making fan assembly is started, the initial rotating speed of the flow making fan assembly is set according to the gear used by the range hood. Wherein, the initial rotational speed of system fan subassembly is the positive correlation's with range hood's gear.

It should be understood that the rotational speed of the damper fan assembly refers to the rotational speed of the motor in the damper fan assembly.

In the embodiment of the application, the initial angle between the flow-making nozzle and the plane where the baffle is located is set according to the gear used by the range hood. Wherein, the initial angle between the plane of the flow-making nozzle and the baffle is in positive correlation with the gear of the range hood. For example, a is K1 × G, where a is an initial angle between the flow control nozzle and the plane where the baffle is located, G is a gear of the range hood, and K1 is a weight coefficient.

When the oil smoke concentration detection values in the time period from the first moment to the second moment are all larger than the first threshold value, the oil smoke outside the oil smoke group is not sucked by the range hood in time and collides with the surface of the smoke collecting cover, so that part of the oil smoke reversely escapes. In this case, the flow making fan assembly on the fume collecting hood is started to make the pressure airflow. The pressure airflow is sprayed out from the flow-making nozzle, is similar to 'sheath flow' after being sprayed out, can form laminar flow with the air flow of the range hood main fan for sucking the oil smoke, and plays a role in preventing the oil smoke from escaping due to oil smoke accumulation; meanwhile, the pressure airflow also forms a protective airflow layer between the oil smoke cluster and the smoke collecting hood, so that the overflow of the collided oil smoke and the smoke collecting hood and oil stains formed by the oil smoke accumulated on the surface of the smoke collecting hood are reduced to the maximum extent.

Alternatively, after the flow fan assembly of the smoke collecting hood is started, the pressure airflow generated by rotating the flow fan assembly at the initial rotation speed may not be able to effectively suppress the smoke. Therefore, the rotating speed of the flow-making fan assembly can be dynamically adjusted, so that the oil smoke can be better inhibited. For example, based on the embodiment shown in fig. 8, as shown in fig. 9, the method for using the smoke collecting hood may further include step S103 after step S102.

And S103, increasing the rotating speed of the flow control fan assembly under the condition that the oil smoke concentration detection value at the third moment is larger than the second threshold value.

Wherein the third time is after the second time.

As a possible implementation manner, after the flow fan assembly is started, the oil smoke sensor on the smoke collection cover can also periodically detect the oil smoke concentration, and determine the oil smoke concentration detection value. Under the condition that the oil smoke concentration detection value determined in one detection period is larger than the second threshold value, the rotating speed of the flow control fan assembly in the next detection period can be increased on the basis of the rotating speed of the flow control fan assembly in the current detection period.

Because the rotating speed of the flow control fan assembly determines the flow speed of the pressure airflow ejected by the flow control nozzle, when the detection value of the oil smoke concentration is greater than the second threshold value, it indicates that the protective airflow layer formed by the pressure airflow cannot effectively suppress the overflowing oil smoke, and therefore it is necessary to increase the rotating speed of the flow control fan assembly to increase the flow speed of the pressure airflow so as to better suppress the overflowing oil smoke.

Optionally, during the working process of the flow making fan assembly, the rotation speed adjustment amount of the flow making fan assembly is determined. And if the rotating speed regulating quantity of the flow control fan assembly is greater than or equal to a third threshold value, sending indication information to the range hood, wherein the indication information is used for indicating the range hood to improve the gear. The rotating speed regulating quantity is equal to a difference value between a first rotating speed and an initial rotating speed, and the first rotating speed is the rotating speed of the flow-making fan assembly after being increased. The third threshold is a rotating speed regulating quantity set by a user or a rotating speed regulating quantity defaulted by a system.

It can be understood that, if the rotation speed adjustment amount of the flow control fan assembly is greater than or equal to the third threshold, it means that the oil smoke overflow cannot be effectively inhibited only by adjusting the rotation speed of the flow control fan assembly, and at this time, the operation gear of the range hood needs to be adjusted, the oil smoke suction wind power of the range hood is increased, and the oil smoke completely enters the range hood.

Optionally, if the rotation speed adjustment amount is smaller than the third threshold, an angle between the flow control nozzle and a plane where the baffle is located may be adjusted, so as to better inhibit the oil smoke from overflowing, so that the oil smoke is sucked into the range hood.

Under the less scene of oil smoke concentration, the system of collection petticoat pipe flows fan subassembly with the second rotational speed operation to better protection collection petticoat pipe reduces the oil smoke accumulation on the collection petticoat pipe. To achieve this object, based on the embodiment shown in fig. 8, as shown in fig. 10, the method for using the smoke collecting hood may further include, after step S102:

and S104, controlling the flow control fan assembly to operate at a second rotating speed under the condition that the oil smoke concentration detection values in the time period from the fourth moment to the fifth moment are all smaller than a fourth threshold value.

And the second rotating speed is the rotating speed of the flow control fan assembly at the fourth moment, and the fourth moment is positioned after the second moment.

When the oil smoke concentration detection value in the time period from the fourth moment to the fifth moment is less than the fourth threshold value, the oil smoke concentration of the current scene is low, even if the assistance of the flow-making fan assembly is not needed, the range hood can meet the exhaust and suction of the oil smoke amount at the moment, the oil smoke accumulation on the smoke collection cover is reduced for better protection of the smoke collection cover, and the flow-making fan assembly still operates according to the rotating speed at the fourth moment.

Optionally, when the oil smoke concentration detection value is not less than the fourth threshold value in the time period from the fourth time to the fifth time, it represents that the operation of the range hood is insufficient to suck all the oil smoke, and the rotation speed of the flow control fan assembly cannot enable all the overflowing oil smoke to enter the range hood, and at this time, the rotation speed of the flow control fan assembly needs to be adjusted until the oil smoke concentration detection value in the time period from the fourth time to the fifth time is less than the fourth threshold value.

Optionally, when the range hood is closed, the flow making fan assembly is closed.

In order to more clearly illustrate the use method of the smoke collecting hood provided by the embodiment of the application, the following description is made in detail with reference to a specific embodiment, as shown in fig. 11.

When the range hood starts to operate at a certain operating gear, the oil smoke sensor moves to the position where the oil smoke sensor is located when the range hood operates at the gear last time, and the oil smoke concentration detection value is periodically detected in real time.

When the oil smoke concentration detection value detected by the oil smoke sensor at the initial position is smaller than a first threshold value D₀When the oil smoke sensor is used, the position of the oil smoke sensor is adjusted until the oil smoke concentration detection value meets a preset condition, wherein the preset condition comprises that the oil smoke concentration detection value is greater than the oil smoke concentration detection valueOr equal to the first threshold value D₀And hold time T_HGreater than or equal to T_H1. And starting the flow control fan assembly under the condition that the oil smoke concentration detection value meets the preset condition, setting the rotating speed of the flow control fan assembly according to the working gear of the range hood, and starting to control the flow.

Then, when the oil smoke concentration detection value detected by the oil smoke sensor is larger than or equal to a second threshold value D₁And when the fan is used, the rotating speed of the flow-making fan assembly is adjusted. Determining a rotation speed adjustment amount of the flow control fan assembly in the rotation speed adjustment process, and if V is greater than or equal to a third threshold V₀The range hood is considered to be incapable of meeting the requirements of the exhaust and suction of the oil smoke amount at the moment, and the range hood operation gear is improved to avoid oil smoke diffusion. V is less than a third threshold if the rotation speed regulation quantity V of the flow control fan assembly₀The angle of the flow control nozzle is adjusted so as to better inhibit the oil smoke from overflowing.

When the oil smoke concentration detected by the oil smoke sensor is smaller than the fourth threshold Dc2, and the time T is kept_H＞T_H1In time, the flow-making fan component is connected with T_HAnd the rotation speed at the moment keeps running, and when the oil smoke concentration detected by the oil smoke sensor in a certain time period is greater than or equal to a fourth threshold Dc2, the rotation speed of the flow control fan assembly is adjusted until the oil smoke concentration detected by the oil smoke sensor in a certain time period is less than the fourth threshold.

When the range hood is closed, the flow-making fan assembly is closed.

The technical scheme that this application embodiment provided is through setting up the periodic detection oil smoke concentration of sensor to the rotational speed of control system flow fan subassembly and the angle of system flow nozzle, so that control the oil smoke better, realized the guard action to the collection petticoat pipe and reduced the congealing of oil smoke on the collection petticoat pipe.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

According to the embodiment of the application, the functional modules or the functional units of the using device of the smoke collecting hood can be divided according to the method example, for example, each functional module or functional unit can be divided corresponding to each function, and two or more functions can also be integrated into one processing module. The integrated module may be implemented in a form of hardware, or may be implemented in a form of a software functional module or a functional unit. The division of the modules or units in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 12 shows a schematic diagram of a possible composition of the use device of the smoke collection hood related to the above embodiment in the case of dividing each function module by corresponding each function, and as shown in fig. 12, the use device 1200 of the smoke collection hood may include: an acquisition unit 1201 and a processing unit 1202.

Specifically, the obtaining unit 1201 is configured to periodically obtain a smoke concentration detection value.

And the processing unit 1202 is configured to start the flow control fan assembly to produce the pressure airflow under the condition that the detected oil smoke concentration values in the time period from the first time to the second time are all greater than the first threshold value.

Optionally, when the flow-making fan assembly is started, the initial rotation speed of the flow-making fan assembly is set according to the gear used by the range hood, and/or the initial angle between the flow-making nozzle and the plane where the baffle is located is set according to the gear used by the range hood.

Optionally, the processing unit 1202 is further configured to increase the rotation speed of the flow control fan assembly when the oil smoke concentration detection value at the third time is greater than the second threshold, where the third time is after the second time.

Optionally, the obtaining unit 1201 is further configured to determine a rotation speed adjustment amount of the flow control fan assembly, where the rotation speed adjustment amount is equal to a difference between a first rotation speed and an initial rotation speed, and the first rotation speed is a rotation speed of the flow control fan assembly after being increased.

Optionally, the apparatus further includes a sending unit 1203, configured to send indication information to the range hood if the rotation speed adjustment amount of the flow control fan assembly is greater than or equal to a third threshold, where the indication information is used to indicate the range hood to increase the gear.

Optionally, the processing unit 1202 is further configured to control the flow control fan assembly to operate at a second rotation speed under the condition that the detected oil smoke concentration values are all smaller than a fourth threshold value in a time period from the fourth time to the fifth time, where the second rotation speed is a rotation speed of the flow control fan assembly at the fourth time, and the fourth time is after the second time.

The units in fig. 12 may also be referred to as modules, for example, the acquisition unit may be referred to as an acquisition module. In addition, in the embodiment shown in fig. 12, the name of each unit may not be the name shown in the figure, and for example, the acquisition unit may also be referred to as a determination unit.

The respective units in fig. 12, if implemented in the form of software functional modules and sold or used as separate products, may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or make a contribution to the prior art, or all or part of the technical solutions may be implemented in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. A storage medium storing a computer software product comprising: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The embodiment of the application also provides a hardware structure schematic diagram of a using device of the smoke collecting hood, as shown in fig. 13, the using device of the smoke collecting hood comprises a processor 1301 and a memory 1302. Optionally, the processor 1301 and the memory 1302 are connected via a bus 1303.

The processor 1301 may be a Central Processing Unit (CPU), a general purpose processor Network Processor (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor may also be any other means having a processing function such as a circuit, device or software module. The processor 1301 may also include multiple CPUs, and the processor 1301 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores that process data (e.g., computer program instructions).

Memory 1302 may be a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, but is not limited to, electrically erasable programmable read-only memory (EEPROM), compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 1302 may be separate or integrated with the processor 1301. The memory 1302 may include, among other things, computer program code. The processor 1301 is configured to execute the computer program code stored in the memory 1302, thereby implementing the methods provided by the embodiments of the present application.

The bus 1303 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 1303 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 13, but this is not intended to represent only one bus or type of bus.

Embodiments of the present application further provide a computer-readable storage medium, which includes computer-executable instructions, and when the computer-executable instructions are executed on a computer, the computer is caused to perform any one of the methods described above.

Embodiments of the present application also provide a computer program product, which when run on a computer, causes the computer to perform any of the methods described above.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer-executable instructions. The processes or functions described in accordance with the embodiments of the present application occur, in whole or in part, when computer-executable instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer executable instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer executable instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.