CN113405132B

CN113405132B - Fume collecting hood and use method thereof

Info

Publication number: CN113405132B
Application number: CN202110698632.XA
Authority: CN
Inventors: 赵亮; 李美恒; 巴新伟
Original assignee: Hisense Shandong Kitchen and Bathroom Co Ltd
Current assignee: Hisense Shandong Kitchen and Bathroom Co Ltd
Filing date: 2021-06-23
Publication date: 2024-07-09
Anticipated expiration: 2041-06-23

Abstract

The embodiment of the application provides a smoke collecting cover and a using method thereof, relates to the technical field of kitchen appliances, and is used for reducing overflow of oil smoke after collision with the smoke collecting cover and condensation of the oil smoke on the surface of the smoke collecting cover and improving smoke suction effect of a range hood. The fume collecting hood comprises: the box body is provided with an air inlet; a plurality of baffles are arranged around and connected with the air inlet; the flow making structure is arranged at one end of at least one baffle plate far away from the air inlet; wherein, the system flows the structure and includes: an air inlet communicating with the atmosphere; a flow making cavity 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 air flow; and the flow making nozzle is communicated with the flow making cavity and is used for ejecting the pressure air flow from the surface of one side of the baffle plate, which is far away from the box body, along the direction of the end of the baffle plate, which is far away from the air inlet, which is directed towards the air inlet.

Description

Fume collecting hood and use method thereof

Technical Field

The application relates to the field of kitchen appliances, in particular to a smoke collecting hood and a using method thereof.

Background

The fume exhaust fan is also called as fume exhaust fan and is one kind of kitchen appliance for purifying kitchen environment. The fume collecting hood of the existing fume extractor is generally horizontal, arched or wedge-shaped, and is arranged above a kitchen range, and the fume generated by the kitchen range is controlled within a certain range through the fume collecting hood, so that the fume is prevented from overflowing and diffusing.

However, because the air flow rate of the surface of the fume collecting hood is very low, in the rising process of the fume generated by cooking, the fume at the outer side may not be timely sucked by the fan, so that the fume collides with the surface of the fume collecting hood, and the fume is prevented from escaping due to the reverse escape of part of the fume. In addition, if the fume contacts the fume collecting hood for a long time, dirt is formed on the surface of the fume collecting hood, and user experience and subsequent cleaning are affected.

Disclosure of Invention

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

In a first aspect, there is provided a fume collecting hood comprising: the box body is provided with an air inlet; a plurality of baffles are arranged around and connected with the air inlet; the flow making structure is arranged at one end of at least one baffle plate far away from the air inlet; wherein, the system flows the structure and includes: an air inlet communicating with the atmosphere; a flow making cavity 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 air flow; and the flow making nozzle is communicated with the flow making cavity and is used for spraying the pressure air flow in the direction that one side surface of the baffle plate, which is away from the box body, points to the air inlet along one end of the baffle plate, which is away from the air inlet.

According to the technical scheme provided by the embodiment of the application, through the arrangement of the flow making structure, when air enters the flow making cavity from the air inlet, the flow making fan component enables the air to form pressure air flow, and the flow making nozzle ejects the pressure air flow from the baffle plate to the direction of the air inlet along the end, away from the air inlet, of the baffle plate on the side surface of the box body. Therefore, the pressure air flow is similar to sheath flow after being sprayed out, and can form laminar flow with air flow of oil smoke sucked by a main fan of the range hood, thereby playing a role in accumulating the oil smoke and preventing the oil smoke from escaping; meanwhile, the pressure air flow forms a protective air flow layer between the oil smoke clusters and the fume collecting hood, so that overflow of the oil smoke after collision with the fume collecting hood and greasy dirt formed by condensation of the oil smoke on the surface of the fume collecting hood are reduced to the greatest extent, and user experience of the range hood is greatly improved.

In a second aspect, there is provided a method of using a fume collection hood, comprising: periodically obtaining a lampblack 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 larger than a first threshold value, starting the flow making fan assembly to manufacture the pressure air flow.

According to the technical scheme provided by the embodiment of the application, through periodically detecting the oil smoke concentration, 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 timely sucked by the range hood and collides with the surface of the fume collecting hood, so that part of the oil smoke can escape in a reverse direction. In this case, the flow fan assembly on the fume hood is activated to create a forced air flow. The pressure air flow is sprayed out from the flow making nozzle, is similar to sheath flow after being sprayed out, can form laminar flow with air flow of oil smoke sucked by a main fan of the range hood, and plays a role in accumulating the oil smoke and preventing the oil smoke from escaping; meanwhile, the pressure air flow forms a protective air flow layer between the oil smoke clusters and the fume collecting hood, so that overflow of the oil smoke after collision with the fume collecting hood and greasy dirt formed by condensation of the oil smoke on the surface of the fume collecting hood are reduced to the greatest extent.

In a third aspect, there is provided a use device for a fume collecting hood, comprising: 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 manufacture the pressure air flow under the condition that the oil smoke concentration detection value is larger than a first threshold value in a period from the first moment to the second moment.

In a fourth aspect, there is provided a smoke cage using apparatus comprising one or more processors and one or more memories; the one or more memories are coupled to the one or more processors, the one or more memories being configured to store computer program code comprising computer instructions that, when executed by the one or more processors, cause the air conditioner to perform the method of using the fume collection hood provided in the second aspect above.

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

In a sixth aspect, there is provided a computer program product for causing a computer to carry out the method of using a fume collecting hood provided in the second aspect above when the computer program product is run on the computer.

For a detailed description of the second to sixth aspects of the present application and various implementations thereof, reference may be made to the detailed description of the first aspect and various implementations thereof; moreover, the advantages of the second aspect and the various implementations thereof may be referred to as the analysis of the advantages of the first aspect and the various implementations thereof, and are not described herein.

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

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a smoke collecting hood according to an embodiment of the present application;

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

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

FIG. 4 is a schematic structural view of a flow fan assembly of a fume collection hood according to an embodiment of the present application;

FIG. 5 is a schematic view of a sensor position of a fume collection hood according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a sensor system for a fume collection hood according to an embodiment of the present application;

FIG. 7 is a schematic view of a sensor for a fume collection hood according to an embodiment of the present application;

FIG. 8 is a schematic flow chart of a method for using the fume collecting hood according to the embodiment of the application;

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

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

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

FIG. 12 is a schematic view showing the components of a device for using the fume collecting hood according to the embodiment of the invention;

fig. 13 is a schematic hardware structure of a device for using a fume 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 accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present invention, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, "and/or" is merely an association relationship describing an association object, meaning that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. The meaning of "plurality" is two or more.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

As described in the background art, the air flow rate on the surface of the fume collecting hood of the existing range hood is very low, and the fume on the outer side of the rising fume group generated by cooking may not be sucked by the fan in time, so that collision occurs with the surface of the fume collecting hood, and the situation of fume leakage caused by reverse escape exists in part of the fume. Meanwhile, if the fume and the fume collecting hood are contacted for a long time, dirt is formed on the surface of the fume collecting hood, and user experience and subsequent cleaning are affected.

In order to solve the technical problems, the embodiment of the application provides a smoke collecting hood, and through the arrangement of a flow making structure, when air enters a flow making cavity from an air inlet, a flow making fan assembly enables the air to form pressure air flow, and a flow making nozzle ejects the pressure air flow on the surface of one side of a baffle plate, which is far away from a box body, and along the direction of one end of the baffle plate, which is far away from the air inlet, towards the air inlet. Therefore, the pressure air flow is similar to sheath flow after being sprayed out, and can form laminar flow with air flow of oil smoke sucked by a main fan of the range hood, thereby playing a role in accumulating the oil smoke and preventing the oil smoke from escaping; meanwhile, the pressure air flow forms a protective air flow layer between the oil smoke clusters and the fume collecting hood, so that overflow of the oil smoke after collision with the fume collecting hood and greasy dirt formed by condensation of the oil smoke on the surface of the fume collecting hood are reduced to the greatest extent, and user experience of the range hood is greatly improved.

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

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

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

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

Optionally, the box body 1 is rectangular in shape, the number of the baffles 2 is four, and an included angle is formed between at least two baffles 2 and the corresponding side surface in the box body 1; at least two baffles 2 are provided with flow-making structure 3 respectively far away from air intake 11 one end.

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

Optionally, the flow-making structure 3 further includes a cover plate 35, where 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 side wall 351 and the second side wall 352 are located on a side of the baffle 2 close to the cabinet 1, and the third side wall 353 is located on a side of the baffle 2 facing away from the cabinet 1.

Optionally, the first side wall 351, the second side wall 352 and the third side wall 353 are integrally 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 can cover the baffle 2.

Wherein the free end of the first side wall 351 and the baffle 2 are spaced apart 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. Or the length of the air inlet 31 may be slightly smaller than the length of the first side wall 351.

Alternatively, the free end of the first sidewall 351 may have any shape. Illustratively, the free end of the first sidewall 351 is arc-shaped with its center of curvature located on the side near 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 center of curvature thereof is located at a side facing away from the first sidewall 351. That is, the intake port 31 has a curved neck shape with the front section of the intake lower than the rear section of the intake, to prevent air dust from depositing in the intake port.

Optionally, the flow-making structure 3 further includes a first curved plate 36 disposed between the cover plate 35 and the baffle 2, wherein a curvature center of the first curved plate 36 is located near one side of 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-making cavity 32 with the baffle 2.

Optionally, the flow-making structure 3 further includes a telescopic angle structure 37 connected to the free end of the third sidewall 353, and the telescopic angle structure 37 and the end of the baffle plate away from the air inlet 11 of the 3 form the flow-making nozzle 34.

The first curved plate is arranged to enable the flow making cavity to form a fluid design, so that the flow making requirement is met, the flow making cavity is separated from the fume collecting hood cavity, the separation from the display control part of the range hood is realized, and the occupied space of a product is saved. Meanwhile, the first curved plate forms a flow making cavity by using the baffle plate, the telescopic angle structure forms a flow making nozzle by using the baffle plate, and the structure of the fume collecting hood is simplified by sharing the baffle plate.

According to the fume collecting hood, the flow making structure is arranged, when air enters the flow making cavity from the air inlet, the flow making fan component enables the air to form pressure air flow, and the flow making nozzle ejects the pressure air flow on the surface of one side of the baffle plate, which is away from the box body, and along the direction of one end of the baffle plate, which is away from the air inlet, which is directed towards the air inlet. Therefore, the pressure air flow is similar to sheath flow after being sprayed out, and can form laminar flow with air flow of oil smoke sucked by a main fan of the range hood, thereby playing a role in accumulating the oil smoke and preventing the oil smoke from escaping; meanwhile, the pressure air flow forms a protective air flow layer between the oil smoke clusters and the fume collecting hood, so that overflow of the oil smoke after collision with the fume collecting hood and greasy dirt formed by condensation of the oil smoke on the surface of the fume collecting hood are reduced to the greatest extent, and user experience of the range hood is greatly improved.

Optionally, as shown in fig. 3, the telescopic corner structure 37 comprises a second curved plate 371 which is inserted into the free end of the third side wall 353; a rotation shaft 372 connected to the second curved plate, and a stepping motor 373 connected to the rotation shaft 372.

Wherein the inside of the third side wall 353 is hollow 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 barrier 2.

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

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

Because the through-flow impeller has the characteristic of unlimited axial length, in the embodiment of the application, the length of the through-flow impeller is longer than that of the flow-making nozzle, the width of pressure air flow is ensured to be enough to cover the surface of the fume collecting hood, and the escape of oil fume is prevented to the greatest extent. Meanwhile, the through-flow impeller has uniform air outlet, the air flow penetrates through the impeller and is subjected to twice forces of the blades, so that the air flow has higher pressure than other impellers at the same rotating speed, the air flow distance can be further, and the pressure air flow can play a better constraint role on the lampblack.

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

The flow control means comprises power control means connected to the flow fan assembly 33 for controlling the operational state of the flow fan assembly.

For example, because the suction force generated by the fan of the range hood on the air is different in different gear positions, the power control device can set different rotation speeds of the flow making fan according to different gear positions of the range hood.

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

Illustratively, the flow direction control device may adjust the angle between the flow-making nozzle 34 and the plane of the baffle 2 according to different gear positions of the range hood.

In some embodiments, the flow control device may be coupled to a control device of the range hood. The control device of the range hood may send corresponding information to the flow control device, so that the flow control device knows the working state of the range hood (for example, whether the range hood is currently in the working state or the closing state, etc.).

In one possible implementation, when the range hood starts to work, the power control device sets the rotating speed of the flow making fan assembly according to the working gear of the range hood, starts to make flow and controls the flow speed of the pressure air flow to be sprayed out, and the flow direction control device controls the rotating angle of the stepping motor according to the working gear of the range hood, so that the angle of the flow making nozzle is adjusted by controlling the rotating shaft, and the overflow of the oil smoke is reduced to the greatest extent. Optionally, when the range hood stops working, the flow control system stops working immediately or stops working after the flow control system works for a preset time.

According to the embodiment of the application, the flow speed of the pressure air flow and the spraying angle of the pressure air flow are adjusted, so that the protection effect of the pressure air flow on the fume collecting hood is improved, and the fume overflow is reduced as much as possible.

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

The oil smoke sensor 38 is connected with the flow control device, and is used for detecting the oil smoke concentration of one side of the baffle 2, which is away from the box body 1, generating an oil smoke concentration detection value, and transmitting the oil smoke concentration detection value to the flow control device, and the flow control device controls the working state of the flow control fan assembly 33 according to the oil smoke concentration detection value, and/or adjusts the angle between the flow control nozzle 34 and the plane of the baffle 2. The specific implementation thereof may refer to the embodiments shown in fig. 8 to 10.

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

Illustratively, the protective case 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, the detection port 391 is provided in the flow making chamber 32, and the detection port 391 is opposite to the opening 21 so as to detect the oil smoke concentration of the oil smoke entering from the opening 21. The filter screen 392 is disposed at the detection port 391 for filtering foreign matters in the oil smoke. The driving wheel 393 and the driven wheel 394 are provided in the protective case 39, the moving endless belt 395 is provided over the driving wheel 393 and the driven wheel 394, and the smoke sensor 38 is provided over the moving endless belt 395.

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

When the range hood is started in a certain gear, the initial position of the oil smoke sensor is the position of the oil smoke sensor when the range hood operates in 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 endless belt.

Based on the fume collecting hood provided by the embodiment, as shown in fig. 8, the embodiment of the application provides a use method of the fume collecting hood, which comprises the following steps:

s101, periodically acquiring a lampblack concentration detection value.

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

S102, starting the flow-making fan assembly to manufacture pressure air flow 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 air stream produced by the flow fan assembly may be automatically ejected from the 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 to the system, which is not limited in the embodiment of the present application.

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

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

In the embodiment of the application, the initial angle between the flow making nozzle and the plane of the baffle 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 plate is in positive correlation with the gear of the range hood. For example, a=k1×g, a is an initial angle between the flow nozzle and the plane of the baffle, 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 timely sucked by the range hood and collides with the surface of the fume collecting hood, so that part of the oil smoke can escape in the reverse direction. In this case, the flow fan assembly on the fume hood is activated to create a forced air flow. The pressure air flow is sprayed out from the flow making nozzle, is similar to sheath flow after being sprayed out, can form laminar flow with air flow of oil smoke sucked by a main fan of the range hood, and plays a role in accumulating the oil smoke and preventing the oil smoke from escaping; meanwhile, the pressure air flow forms a protective air flow layer between the oil smoke clusters and the fume collecting hood, so that overflow of the oil smoke after collision with the fume collecting hood and greasy dirt formed by condensation of the oil smoke on the surface of the fume collecting hood are reduced to the greatest extent.

Alternatively, after the flow fan assembly of the fume collection hood is started, the pressurized airflow produced by the flow fan assembly rotating at the initial rotational speed may not be effective in suppressing fume. Therefore, the rotating speed of the flow control fan assembly can be dynamically adjusted to better inhibit oil smoke. For example, based on the embodiment shown in fig. 8, as shown in fig. 9, the method of using the fume collecting hood may further include step S103 after step S102.

And S103, increasing the rotating speed of the flow-making 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 located after the second time.

As a possible implementation manner, after the flow fan assembly is started, the oil smoke sensor on the smoke collecting cover can also periodically detect the oil smoke concentration to determine an 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 making fan assembly in the next detection period can be increased on the basis of the rotating speed of the flow making fan assembly in the current detection period.

Because the rotating speed of the flow making fan assembly determines the flow speed of the pressure air flow sprayed out by the flow making nozzle, when the oil smoke concentration detection value is larger than the second threshold value, the protective air flow layer formed by the pressure air flow cannot effectively press the overflowed oil smoke, so that the rotating speed of the assembly of the flow making fan is required to be increased to increase the flow speed of the pressure air flow so as to better press the overflowed oil smoke.

Optionally, during operation of the flow fan assembly, a rotational speed adjustment of the flow fan assembly is determined. And if the rotating speed adjustment quantity of the flow making fan assembly is larger 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 increase the gear. The rotating speed regulating quantity is equal to the difference between the first rotating speed and the 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 rotational speed adjustment amount set by a user or a rotational speed adjustment amount defaulted by the system.

It can be understood that if the rotation speed adjustment amount of the flow-making fan assembly is greater than or equal to the third threshold value, it means that the oil smoke can not be effectively inhibited from overflowing only by adjusting the rotation speed of the flow-making fan assembly, and at this time, the operation gear of the range hood needs to be adjusted, so that the oil smoke suction force of the range hood is increased, and the oil smoke is completely introduced into the range hood.

Optionally, if the rotation speed adjustment amount is smaller than the third threshold value, the angle between the flow-making nozzle and the plane of the baffle plate can be adjusted, so that the overflow of the oil smoke can be well inhibited, and the oil smoke is sucked into the range hood.

And under the scene of smaller oil smoke concentration, the flow making fan assembly of the fume collecting hood operates at a second rotating speed so as to better protect the fume collecting hood and reduce the oil smoke condensation on the fume collecting hood. To achieve this, based on the embodiment shown in fig. 8, as shown in fig. 10, the method for using the fume 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 smaller than a fourth threshold value.

The second rotating speed is the rotating speed of the flow making fan assembly at a fourth moment, and the fourth moment is positioned after the second moment.

When the oil smoke concentration detection values in the time period from the fourth moment to the fifth moment are smaller than the fourth threshold value, the oil smoke concentration of the current scene is lower, and even if the auxiliary of the flow making fan assembly is not needed, the range hood can be used for exhausting and sucking the oil smoke at the moment, in order to better protect the fume collecting hood, the oil smoke condensation on the fume collecting hood is reduced, and the flow making fan assembly still operates according to the rotating speed at the fourth moment.

Optionally, when the detected oil smoke concentration value is not less than the fourth threshold value in the time period from the fourth time to the fifth time, the detected oil smoke concentration value is not less than the fourth threshold value only when the range hood is not enough to suck all oil smoke, and the rotational speed of the flow-making fan assembly cannot enable all the overflow oil smoke to enter the range hood, and at this time, the rotational speed of the flow-making fan assembly needs to be adjusted until the detected oil smoke concentration 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 turned off, the flow fan assembly is turned off.

In order to more clearly illustrate the use method of the fume collecting hood provided by the embodiment of the application, the following description is made in detail with reference to the 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 of the oil smoke sensor 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 D ₀, the position of the oil smoke sensor is adjusted until the oil smoke concentration detection value meets the preset condition, wherein the preset condition comprises that the oil smoke concentration detection value is larger than or equal to the first threshold D ₀, and the holding time T _H is larger than or equal to T _H1. And under the condition that the oil smoke concentration detection value meets the preset condition, starting the flow making fan assembly, setting the rotating speed of the flow making fan assembly according to the working gear of the range hood, and starting flow making.

And then, when the oil smoke concentration detection value detected by the oil smoke sensor is greater than or equal to a second threshold D ₁, regulating the rotating speed of the flow control fan assembly. And determining the rotation speed regulating quantity of the flow-making fan assembly in the rotation speed regulating process, and if V is larger than or equal to V ₀, namely, the operation gear of the range hood cannot meet the requirement of exhausting the oil smoke at the moment, the operation gear of the range hood is improved, and the oil smoke is prevented from being diffused. If the rotating speed adjusting quantity V of the flow making fan assembly is smaller than a third threshold V ₀, the angle of the flow making nozzle is adjusted, so that the oil smoke overflow is better restrained.

When the oil smoke concentration detected by the oil smoke sensor is smaller than a fourth threshold Dc2 and the time T _H＞T_H1 is kept, the flow control fan assembly keeps running at the rotating speed at the moment T _H, and when the oil smoke concentration detected by the oil smoke sensor in a certain time period is larger than or equal to the fourth threshold Dc2, the rotating speed of the flow control fan assembly is regulated until the oil smoke concentration detected by the oil smoke sensor in a certain time period is smaller than the fourth threshold.

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

According to the technical scheme provided by the embodiment of the application, the sensor is arranged to periodically detect the oil smoke concentration, so that the rotating speed of the flow-making fan assembly and the angle of the flow-making nozzle are controlled, the oil smoke is better controlled, the protection effect on the fume collecting hood is realized, and the condensation of the oil smoke on the fume collecting hood is reduced.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

According to the embodiment of the application, the function modules or the function units of the using device of the fume collecting hood can be divided according to the method example, for example, each function module or each function unit can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware, or in software functional modules or functional units. The division of the modules or units in the embodiment of the present application is schematic, which is merely a logic function division, and other division manners may be implemented in practice.

In the case of dividing the respective functional modules with the respective functions, fig. 12 shows a schematic view of one possible composition of the use device of the fume collecting hood related to the above embodiment, as shown in fig. 12, the use device 1200 of the fume collecting hood may include: an acquisition unit 1201, a processing unit 1202.

Specifically, the acquiring unit 1201 is configured to periodically acquire the detection value of the oil smoke concentration.

The processing unit 1202 is configured to start the flow fan assembly to manufacture the pressure air flow when 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.

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

Optionally, the processing unit 1202 is further configured to increase the rotational speed of the flow fan assembly if the detected value of the oil smoke concentration at the third time is greater than the second threshold, where the third time is located after the second time.

Optionally, the obtaining unit 1201 is further configured to determine a rotation speed adjustment amount of the flow 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 an increased rotation speed of the flow fan assembly.

Optionally, the device further includes a sending unit 1203, configured to send, if the rotation speed adjustment amount of the flow fan assembly is greater than or equal to the third threshold, indication information to the range hood, 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 fan assembly to operate at a second rotation speed when the detected value of the oil smoke concentration in the time period from the fourth time to the fifth time is less than the fourth threshold, where the second rotation speed is the rotation speed of the flow 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 units may be referred to as acquisition modules. In addition, in the embodiment shown in fig. 12, the names of the respective units may also be other than those shown in the drawings, and for example, the acquisition unit may also be referred to as a determination unit.

The individual units in fig. 12 may be stored in a computer-readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present application. The storage medium storing the computer software product includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

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

Processor 1301 may be a central processing unit (central processing unit, CPU), a general purpose processor network processor (network processor, NP), a digital signal processor (DIGITAL SIGNAL processing, DSP), a microprocessor, a microcontroller, a programmable logic device (programmable logic device, PLD), or any combination thereof. The processor may also be any other means for performing a processing function, such as a circuit, device, or software module. Processor 1301 may also include multiple CPUs, and processor 1301 may be a single-Core (CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

The memory 1302 may be a read-only memory (ROM) or other type of static storage device, a random access memory (random access memory, RAM) or other type of dynamic storage device that may store static information and instructions, or an electrically erasable programmable read-only memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, 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, as embodiments of the application are not limited in this regard. The memory 1302 may be separate or integrated with the processor 1301. Wherein the memory 1302 may contain computer program code. Processor 1301 is configured to execute computer program code stored in memory 1302, thereby implementing the method provided by the embodiment of the present application.

Bus 1303 may be a peripheral component interconnect standard (PERIPHERAL COMPONENT INTERCONNECT, PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The bus 1303 may be classified 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 not only one bus or one type of bus.

Embodiments of the present application also provide a computer-readable storage medium comprising computer-executable instructions that, when executed on a computer, cause the computer to perform any 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, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it 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. When the computer-executable instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer-executable instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, from one website, computer, server, or data center by wired (e.g., coaxial cable, fiber optic, digital subscriber line (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 data storage devices including one or more servers, data centers, etc. that can be integrated with the media. Usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid State Disk (SSD)) or the like.

Although the application is described herein 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 study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "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 application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fume collection hood, said fume collection hood comprising:

The box body is provided with an air inlet;

a plurality of baffles are arranged in a surrounding manner and are connected with the air inlet; and

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

a flow control device;

wherein, the system flows the structure and includes:

an air inlet communicating with the atmosphere;

A flow-making cavity 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 air flow; the method comprises the steps of,

The flow making nozzle is communicated with the flow making cavity and is used for spraying the pressure air flow in the direction that one side surface of the baffle, which is away from the box body, points to the air inlet along one end of the baffle, which is away from the air inlet;

The cover plate is detachably connected with the baffle and comprises a third side wall, the third side wall is positioned on one side of the baffle, which is away from the box body, the free end of the third side wall is connected with a telescopic angle structure, the telescopic angle structure comprises a second curved plate, a rotating shaft and a stepping motor, the second curved plate is connected with the second curved plate, the stepping motor is connected with the rotating shaft, the stepping motor is used for driving the rotating shaft to rotate, and then the second curved plate is driven to move so as to adjust the angle between the flow making nozzle and the plane where the baffle is positioned, and the telescopic angle structure and one end of the baffle, which is away from the air inlet, form the flow making nozzle;

wherein,

The flow control device includes:

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

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 making nozzle and the plane of the baffle plate through the rotating shaft.

2. A smoke collecting hood according to claim 1 wherein the cover comprises a first side wall, a second side wall and the third side wall connected in sequence;

The first side wall and the second side wall are positioned on one side of the baffle close to 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 smoke collecting hood according to claim 2 wherein the free end of the first side wall is arcuate and has a centre of curvature located on a side adjacent the baffle;

The part of the baffle plate corresponding to the free end of the first side wall is arc-shaped, and the curvature center of the baffle plate is positioned at one side away from the first side wall.

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

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

The first curved plate and the baffle plate form the flow making cavity.

5. A smoke collecting hood according to claim 1 wherein the centre of curvature of the second curved panel is located on a side adjacent the baffle.

6. A smoke collecting hood according to claim 1 wherein the flow-making blower assembly comprises:

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

7. A smoke collecting hood according to claim 6 wherein the length of the flow-through impeller is greater than the length of the flow-making nozzle.

8. A smoke collecting hood according to claim 1 wherein the portion of the baffle corresponding to the flow-making chamber has an opening;

the fume collecting hood further comprises: 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 is used for detecting the oil smoke concentration of one side of the baffle plate, which is 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;

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 of the baffle plate.

9. A smoke-collecting hood according to claim 8, further comprising:

the protection box is sleeved on the oil smoke sensor and 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 is used for filtering foreign matters in the lampblack;

the driving wheel and the driven wheel are arranged in the protection box; the method comprises the steps of,

A movable endless belt which is arranged in the protection box and sleeved on the driving wheel and the driven wheel;

Wherein, the oil smoke sensor is arranged on the movable ring belt.

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

the end, away from the air inlet, of the at least two baffles is respectively provided with the flow making structure.

11. A method of using a fume collection hood, the method comprising:

periodically obtaining a lampblack concentration detection value;

Starting a flow-making fan assembly to manufacture pressure air flow 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;

The fume collecting hood comprises: the flow control structure and the flow control device are arranged at one end of the at least one baffle plate, which is far away from the air inlet;

The flow-making structure comprises a cover plate detachably connected with the baffle, the cover plate comprises a third side wall, the third side wall is located on one side of the baffle, which is away from the box body, the free end of the third side wall is connected with a telescopic angle structure, the telescopic angle structure comprises a second curved plate, a rotating shaft and a stepping motor, the second curved plate is connected with the second curved plate, the stepping motor is connected with the rotating shaft, the stepping motor is used for driving the rotating shaft to rotate, and then driving the second curved plate to move so as to adjust the angle between a flow-making nozzle and the plane where the baffle is located, and the telescopic angle structure and one end of the baffle, which is away from the air inlet, form the flow-making nozzle;

wherein,

The flow control device includes:

12. The method of claim 11, wherein at start-up of the flow fan assembly, an initial rotational speed of the flow fan assembly is set according to a gear used by the range hood, and/or an initial angle between the flow nozzle and a plane of the baffle is set according to a gear used by the range hood.

13. The method of claim 11 or 12, wherein after the activating the flow fan assembly, the method further comprises:

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

14. The method of claim 13, wherein the method further comprises:

Determining a rotation speed adjustment amount of the flow making fan assembly, wherein the rotation speed adjustment amount 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 adjustment quantity of the flow making fan assembly is larger 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 increase the gear.

15. The method of claim 13, wherein the method further comprises:

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