Hood vision system and extractor hood

Abstract

The application provides a kind of visual system of range hood and range hood, it is related to intelligent range hood technical field, to solve the camera of range hood in cooking is easily disturbed by water mist or smoke, affect the definition when using and the problem of smoke deposition caused after using to some extent.The visual system of range hood provided by the application, for range hood, including vision module and wind power module;Vision module is connected with the shell of range hood, and the detection area of vision module is towards the cooking bench, and wind power module is connected with the shell of range hood, and is set in the position corresponding to vision module;Wind power module includes fan and flow guide component, the air inlet of flow guide component is connected with the air outlet of fan, and the air outlet of flow guide component is towards vision module, so that the airflow output by fan blows to the outer surface of vision module.

Description

Technical Field

[0001] This invention relates to the field of intelligent range hood technology, and in particular to a range hood vision system and a range hood. Background Technology

[0002] With the development of smart home technology, the intelligence level of range hoods, as a core kitchen appliance, is constantly improving. In recent years, range hood products with integrated vision modules have gradually emerged. By installing visual sensors such as cameras facing the stove on the range hood casing, they can collect image information of the cooking area in real time, thereby achieving intelligent recognition of oil fume concentration, cooking status, and even the type of food. This provides a data foundation for intelligent functions such as automatic airflow adjustment and safety monitoring of the range hood.

[0003] However, range hoods operate in high-temperature, high-fume environments for extended periods, making the lens surface of the vision module highly susceptible to contamination from cooking fumes. Once oil droplets condense or grease accumulates on the lens window's outer surface, it directly leads to blurred image acquisition, a significant decrease in visual recognition accuracy, and even complete loss of monitoring function. Currently, existing products primarily rely on passive protection methods such as oleophobic coatings for the vision module's anti-fouling treatment. These methods lack long-term effectiveness and cannot maintain the cleanliness of the lens window during continuous cooking, severely limiting the reliable application of vision systems in range hoods.

[0004] In addition, the visual module inside the range hood is directly impacted by heat radiation and oil fume flow, and the high temperature environment threatens the stability and lifespan of electronic components.

[0005] Therefore, there is an urgent need to provide a range hood vision system and a range hood to solve the problems existing in the prior art to a certain extent. Summary of the Invention

[0006] The purpose of this invention is to provide a range hood vision system and a range hood, so as to solve to a certain extent the problem that the camera of the range hood is easily interfered with by water mist or smoke during cooking, affecting the clarity during use and causing smoke accumulation after use.

[0007] This invention provides a range hood vision system for use in a range hood, comprising a vision module and a fan module; the vision module is connected to the housing of the range hood, and the detection area of ​​the vision module faces the stove; the fan module is connected to the housing of the range hood and is positioned corresponding to the vision module; the fan module includes a fan and a guide member, the air inlet of the guide member is connected to the air outlet of the fan, and the air outlet of the guide member faces the vision module, so that the airflow output by the fan blows onto the outer surface of the vision module.

[0008] The range hood vision system provided in this application further includes a support shell, which is installed inside the housing of the range hood. The support shell includes a support portion and a partition portion. The support portion forms an accommodating space, and the partition portion is disposed within the accommodating space, dividing the accommodating space into a first accommodating cavity and a second accommodating cavity. The wind power module is disposed within the first accommodating cavity, and the vision module is disposed within the second accommodating cavity.

[0009] Specifically, the supporting shell also includes a cover plate portion, which together with the supporting portion forms the receiving space, and the cover plate portion has a clearance hole formed at the air inlet position of the fan.

[0010] Specifically, the air outlet of the air guide member can extend out of the first receiving cavity and output airflow toward the vision module, and the air outlet of the air guide member is formed with a grille.

[0011] The vision module includes a camera body and a lens window; the camera body is disposed in the first receiving cavity, the supporting shell has a perforation corresponding to the lens position of the camera body, the lens window is disposed in the perforation and closes the perforation, and the lens of the camera body is disposed corresponding to the lens window.

[0012] Specifically, the airflow guiding member has a reflective portion, which is inclined and located relative to the air inlet of the airflow guiding member, guiding the airflow towards the air outlet of the airflow guiding member.

[0013] Furthermore, the flow guiding member has a flow guiding portion, which is inclined, and the extension line of the axis of the flow guiding portion can intersect with the plane of the lens window.

[0014] Furthermore, the air guide component and the fan are an integral structure, and a linear drive mechanism is provided inside the bearing shell. The output end of the linear drive mechanism is connected to the outer shell of the fan, and the linear drive mechanism is arranged in a vertical direction, which can drive the air outlet of the air guide component to extend or retract into the shell of the range hood.

[0015] Furthermore, the air guide component and the fan are separate structures. A linear drive mechanism is provided inside the bearing shell. The output end of the linear drive mechanism is connected to the air guide component. The linear drive mechanism is arranged in a vertical direction and can drive the air outlet of the air guide component to extend out of or retract into the housing of the range hood.

[0016] Compared with existing technologies, the smoke hood vision system provided by this invention has the following advantages: The present invention provides a range hood vision system for use in range hoods, comprising a vision module and a fan module; the vision module is connected to the housing of the range hood, and the detection area of ​​the vision module faces the stove; the fan module is connected to the housing of the range hood and is positioned at the corresponding location of the vision module; the fan module includes a fan and a guide component, the air inlet of the guide component is connected to the air outlet of the fan, and the air outlet of the guide component faces the vision module, so that the airflow output by the fan blows onto the outer surface of the vision module.

[0017] This analysis shows that the range hood's casing serves as the mounting base for the entire vision system and fan module, providing fixed support and positioning for each component. The vision module is installed on the range hood's casing, with its detection area facing the stovetop below, thus acquiring real-time image data of the cookware on the stovetop during cooking. Using the image information acquired by the vision module, the range hood system can intelligently identify the concentration of cooking fumes, the state of the cooking flame, and whether abnormalities such as dry burning have occurred, thereby providing data support for subsequent automatic fan adjustment or safety warnings.

[0018] The fan module is also installed on the range hood housing and positioned corresponding to the vision module. Its purpose is to ensure that the airflow generated by the fan module directly affects the area where the vision module is located. The fan module mainly consists of a fan and a guide component. The fan, as the power source, generates airflow with a certain velocity and pressure. The air inlet of the guide component is connected to the air outlet of the fan, allowing the airflow output by the fan to smoothly enter the guide component. The guide component then directs the airflow towards the vision module through its outlet, ultimately blowing the airflow generated by the fan onto the outer surface of the vision module. During this process, the continuously flowing airflow forms an air curtain on the outer surface of the vision module. On the one hand, it blows the oil fume particles rising during cooking away from the lens area, preventing oil droplets from adhering to the lens surface. On the other hand, the flowing air also helps to dissipate heat and cool the vision module, preventing thermal damage to electronic components caused by the high-temperature oil fume environment, effectively extending the lifespan of the vision module and ensuring the clarity of image acquisition.

[0019] In addition, the present invention also provides a range hood, including a housing and the above-mentioned range hood vision system; the housing has a smoke inlet, and the air outlet of the air guide member is disposed toward the smoke inlet.

[0020] Since the range hood vision system provided in this application can avoid the influence of smoke or water mist on the camera to a certain extent, and can also avoid the deposition of smoke and oil stains to a certain extent, it can improve the service life and clarity of the vision system to a certain extent, thereby ensuring the accuracy of the overall range hood's judgment of the cooking situation during use and improving the control precision of the smoke extraction capacity. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is an exploded view of the vision system for a smoke hood provided in an embodiment of the present invention; Figure 2 This is a schematic diagram showing the position of the range hood vision system provided in an embodiment of the present invention within the housing of the range hood; Figure 3 This is a cross-sectional view of the smoke hood vision system provided in an embodiment of the present invention; Figure 4 This is an external schematic diagram of the range hood vision system and the range hood housing after assembly, as provided in an embodiment of the present invention.

[0023] In the diagram: 1-Range hood; 101-Housing shell; 2-Bearing shell; 201-Bearing part; 202-Separation part; 203-First receiving cavity; 204-Second receiving cavity; 205-Cover plate part; 2051-Avoiding hole; 3-Fan; 4-Guiding component; 401-Reflecting part; 402-Guiding part; 403-Grate; 5-Camera body; 6-Lens window. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0029] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device during use or operation.

[0030] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0031] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0032] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have various constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0033] like Figures 1-4 As shown, the present invention provides a range hood vision system for a range hood 1, including a vision module and a fan module; the vision module is connected to the housing 101 of the range hood 1, and the detection area of ​​the vision module faces the stove; the fan module is connected to the housing 101 of the range hood 1 and is set at the position corresponding to the vision module; the fan module includes a fan 3 and a guide member 4, the air inlet of the guide member 4 is connected to the air outlet of the fan 3, and the air outlet of the guide member 4 faces the vision module, so that the airflow output by the fan 3 blows towards the outer surface of the vision module.

[0034] Compared with existing technologies, the smoke hood vision system provided by this invention has the following advantages: The range hood vision system provided by this invention uses the housing 101 of the range hood 1 as the mounting base for the entire vision system and the fan module, providing fixed support and positioning for each component. The vision module is installed on the housing 101 of the range hood 1, with its detection area facing the stove below, thereby acquiring image data of the pots and pans on the stove in real time during cooking. Through the image information acquired by the vision module, the range hood system can intelligently identify the concentration of oil fumes, the state of the cooking flame, and whether abnormal conditions such as dry burning have occurred, thus providing data support for subsequent automatic fan adjustment or safety warnings.

[0035] The fan module is also installed on the housing 101 of the range hood 1, positioned corresponding to the vision module. Its purpose is to allow the airflow generated by the fan module to directly act on the area where the vision module is located. The fan module mainly consists of a fan 3 and a guide component 4. The fan 3 serves as the power source, generating airflow with a certain velocity and pressure. The air inlet of the guide component 4 is connected to the air outlet of the fan 3, allowing the airflow output by the fan 3 to smoothly enter the guide component 4. The guide component 4 then guides the airflow towards the vision module through its air outlet, ultimately directing the airflow generated by the fan 3 towards the outer surface of the vision module. During this process, the continuously flowing airflow forms an air curtain on the outer surface of the vision module. On the one hand, this blows away the oil fume particles rising during cooking from the lens area, preventing oil droplets from adhering to the lens surface. On the other hand, the flowing air also helps to dissipate heat and cool the vision module, preventing thermal damage to electronic components caused by the high-temperature oil fume environment, effectively extending the service life of the vision module and ensuring the clarity of image acquisition.

[0036] Optionally, such as Figures 1-4 As shown, the range hood vision system provided in this application also includes a support shell 2, which is installed inside the housing 101 of the range hood 1. The support shell 2 includes a support portion 201 and a partition portion 202. The support portion 201 forms an accommodating space, and the partition portion 202 is disposed in the accommodating space, dividing the accommodating space into a first accommodating cavity 203 and a second accommodating cavity 204. The wind power module is disposed in the first accommodating cavity 203, and the vision module is disposed in the second accommodating cavity 204.

[0037] The support shell 2 is installed as an independent mounting bracket or protective cover structure within the housing 101 of the range hood 1. The support shell 2 includes a support part 201 and a partition part 202, wherein the support part 201 is formed by enclosing a plate to form an accommodating space for housing and protecting the internal electronic components and fan components.

[0038] The partition 202 is located inside the receiving space, dividing the originally complete receiving space into two independent receiving cavities: a first receiving cavity 203 and a second receiving cavity 204. Through this partition design, the wind power module is installed in the first receiving cavity 203, and the vision module is installed in the second receiving cavity 204. The two functional modules are physically separated, which facilitates independent assembly and maintenance of each module, and effectively prevents vibrations generated by the wind power module during operation from being directly transmitted to the vision module, thus avoiding vibration affecting the image acquisition stability of the camera. Simultaneously, the partition design also prevents small amounts of oil mist or dust that may be carried by the fan 3 during operation from entering the cavity containing the vision module, thereby providing additional protection for the delicate camera element.

[0039] Optionally, such as Figures 1-4As shown, the support shell 2 also includes a cover plate 205, which together with the support portion 201 forms an accommodating space. The cover plate 205 has an avoidance hole 2051 corresponding to the air inlet position of the fan 3.

[0040] The cover plate 205 and the support plate 201 together form the aforementioned accommodating space. The cover plate 205 serves as a cover or sealing plate to close the open portion of the support plate 201, thereby providing all-round physical protection for the internally installed wind module and vision module, preventing oil fumes from outside the range hood housing 101 from directly entering the internal cavity.

[0041] An obstacle hole 2051 is provided at the air inlet position of the cover plate 205 corresponding to the fan 3. The obstacle hole 2051 can provide a channel for the air intake of the fan 3, ensuring that the fan 3 can draw in sufficient air from the external environment during operation, avoiding air intake obstruction due to cavity closure, thereby ensuring that the flow rate and pressure of the airflow output by the fan 3 meet the requirements of blowing and cleaning.

[0042] Optionally, such as Figures 1-4 As shown, the air outlet of the air guide member 4 can extend out of the first receiving cavity 203 and output airflow toward the vision module, and the air outlet of the air guide member 4 is formed with a grille 403.

[0043] To further enhance the airflow effect on the vision module, the air outlet of the air guide component 4 is configured to extend out of the first receiving cavity 203, so that the position of the air outlet is closer to the surface of the vision module to be cleaned, thereby reducing the diffusion and attenuation of the airflow during transmission and making the output airflow more concentrated towards the outer surface of the vision module.

[0044] Meanwhile, a grille 403 structure is formed at the air outlet of the air guide component 4. The grille 403 is composed of multiple parallel strip holes, which can rectify the output airflow to a certain extent, and sort the turbulent flow into a uniform laminar or near-laminar flow state. This makes the airflow blowing onto the surface of the vision module more stable and the coverage area more uniform. It avoids the local eddies caused by airflow turbulence, which prevent oil stains from being effectively blown away, thereby improving the cleaning effect and blowing efficiency.

[0045] Optionally, such as Figures 1-4 As shown, the vision module includes a camera body 5 and a lens window 6; the camera body 5 is disposed in the first receiving cavity 203, and the carrier shell 2 has a perforation formed corresponding to the lens position of the camera body 5. The lens window 6 is disposed in the perforation and the perforation is closed. The lens of the camera body 5 is disposed corresponding to the lens window 6.

[0046] The camera body 5 is the core electronic device for image acquisition, containing an image sensor, an optical lens assembly, and related signal processing circuits. Since the camera body 5 is a precision electronic component and should not be directly exposed to oily fumes, it is installed within the first receiving cavity 203 and protected by a sealed housing 2.

[0047] The housing 2 has a perforation machined to correspond to the lens position of the camera body 5, which avoids the light path. The lens window 6 is made of a transparent material with high light transmittance, such as optical glass or sapphire glass, and is installed inside the perforation to seal it. In this way, the lens window 6 provides a clear light channel for the camera body 5 while completely isolating the camera body 5 from the external oil fume environment, preventing oil from directly contaminating the lens body. The lens of the camera body 5 is positioned corresponding to the lens window 6 to ensure that the camera's field of view can completely cover the stove area through the lens window 6, enabling normal shooting.

[0048] Optionally, such as Figures 1-4 As shown, the airflow guide member 4 has a reflective part 401. The reflective part 401 is inclined and located at the position of the airflow guide member 4 relative to the air inlet, guiding the airflow to the air outlet direction of the airflow guide member 4.

[0049] The reflective part 401 mentioned above in this application is actually one of the plates of the flow guide member 4. By making the reflective part 401 inclined and corresponding to the position of the flow guide member 4 relative to the air inlet, when the gas output by the fan 3 enters the flow guide member 4 from the air inlet, it will first come into contact with the inclined reflective part 401. In this application, the inclination of the reflective part 401 is such that the top end is close to the air outlet of the flow guide member 4, while the bottom end is far away from the air outlet of the flow guide member 4. Thus, by using the inclined reflective part 401, part of the airflow can flow along the reflective part 401 to the air outlet of the flow guide member 4 located at the bottom, while part of the airflow will hit the reflective part 401 and be reflected to the bottom.

[0050] Accordingly, such as Figures 1-4 As shown, the flow guiding member 4 in this application has a flow guiding portion 402, which is inclined and the extension line of the axis of the flow guiding portion 402 can intersect with the plane of the lens window 6.

[0051] The further provided airflow guide 402 in this application is actually the base plate of the airflow guide member 4, which is also inclined. The extension line of the axis of the inclined airflow guide 402 can intersect with the plane of the lens window 6, so that the direction of the airflow can be accurately calibrated in the final stage before the airflow is ejected, ensuring that the main direction of the airflow ejected from the air outlet can accurately point to the surface of the lens window 6.

[0052] Since the lens window 6 is the key part of the vision module that is most susceptible to oil contamination, the airflow can be precisely guided by the guide section 402 to flush the surface of the lens window 6 at the optimal incident angle, so that the clean airflow is maximized and effectively removes oil droplets and soot adhering to the surface of the lens window 6, ensuring that the camera's field of view is always clear.

[0053] It is understandable that the airflow reflected by the reflector 401 will come into contact with the guide 402 located at the bottom, and under the action of the guide 402, it will be ejected along the axis and extension of the guide 402, thus achieving the purpose of blowing away delay.

[0054] In one alternative embodiment, the air guide component 4 and the fan 3 are an integral structure. The bearing shell 2 is provided with a linear drive mechanism. The output end of the linear drive mechanism is connected to the outer shell of the fan 3. The linear drive mechanism is arranged in a vertical direction and can drive the air outlet of the air guide component 4 to extend out or retract into the shell 101 of the range hood 1.

[0055] The flow guide component 4 and the fan 3 adopt an integrated structural design, and the two are fixedly connected to form a non-removable integral component. A linear drive mechanism is set inside the bearing shell 2. This linear drive mechanism can be a micro linear motor, an electric push rod, or a linear motion module composed of a rotary motor and a lead screw and nut pair.

[0056] The linear drive mechanism is arranged vertically inside the bearing housing 2, and its output end is fixedly connected to the outer casing of the fan 3. In actual operation, when the range hood system is in standby or non-cooking state, the linear drive mechanism is in a retracted state, and the air outlet of the guide component 4 is drawn into the housing 101 of the range hood 1, keeping the overall appearance of the machine clean.

[0057] When the range hood is turned on and cooking is detected, the linear drive mechanism is activated, and its output end extends out, driving the fan 3 and the guide component 4 to move downward as a whole. This causes the air outlet of the guide component 4 to extend outward from the bottom of the range hood housing 101, shortening the distance between it and the visual module, and improving the airflow accuracy and cleaning effect.

[0058] After cooking, the linear drive mechanism reverses its action, retracting the guide component 4 and the fan 3 into the housing 101. This integrated lifting structure enables the system to achieve better blowing efficiency when working, while protecting the air outlet from external oil stains when not in operation.

[0059] As an alternative, the air guide component 4 and the fan 3 in this application are separate structures. A linear drive mechanism is provided inside the bearing shell 2. The output end of the linear drive mechanism is connected to the air guide component 4, and the linear drive mechanism is arranged in the vertical direction, which can drive the air outlet of the air guide component 4 to extend out or retract into the shell 101 of the range hood 1.

[0060] The flow guide component 4 and the fan 3 adopt a split structure design, that is, the fan 3 is fixedly installed inside the bearing shell 2, while the flow guide component 4 can move relative to the fan 3. The bearing shell 2 also has a vertically arranged linear drive mechanism, but the output end of this linear drive mechanism is only connected to the flow guide component 4, not to the fan 3. During operation, the linear drive mechanism drives the flow guide component 4 to move independently relative to the fan 3, switching between docking and disengaging states between the air inlet of the flow guide component 4 and the air outlet of the fan 3.

[0061] When cleaning is required, the linear drive mechanism pushes the guide member 4 downward, causing its air outlet to extend out of the range hood housing 101. Simultaneously, the air inlet of the guide member 4 and the air outlet of the fan 3 are engaged or plugged into each other to ensure the airflow channel is sealed. When cleaning is not needed, the linear drive mechanism retracts the guide member 4 upward, causing its air outlet to retract into the housing 101. This split structure, with its smaller moving parts, places lower load requirements on the linear drive mechanism, which helps reduce costs and energy consumption. It also allows for more flexible placement of the fan 3, unrestricted by the extension and retraction stroke of the guide member 4.

[0062] In addition, the present invention also provides a range hood 1, including a housing 101 and the above-mentioned range hood vision system; the housing 101 is formed with a smoke inlet, and the air outlet of the air guide member 4 is arranged facing the smoke inlet.

[0063] Since the range hood vision system provided in this application can avoid the influence of smoke or water mist on the camera to a certain extent, and can also avoid the deposition of smoke and oil stains to a certain extent, it can improve the service life and clarity of the vision system to a certain extent, thereby ensuring the accuracy of the overall range hood 1 in judging the cooking situation during use and improving the control precision of the smoke extraction ability.

[0064] Understandably, the control logic of the range hood's vision system can be connected to the main control board of the range hood 1. The vision module acquires images of the stove area in real time, and the main control board uses a built-in image recognition algorithm to quantitatively assess the concentration of cooking fumes. When an increase in the concentration of cooking fumes is detected, the main control board adjusts the exhaust fan 3 to increase suction power, and simultaneously controls the fan 3 in the fan module to start, adjusting the output wind speed of the fan module according to the concentration of cooking fumes.

[0065] Specifically, when the concentration of oil fumes is low, the fan module operates at a low speed to maintain the basic cleanliness of the lens window 6; when a sharp increase in the concentration of oil fumes is detected, the fan module automatically switches to high-speed operation mode and outputs a strong airflow to cope with the impact of a large amount of oil fumes, ensuring that the lens window 6 remains clear even in heavy oil fume environments.

[0066] Meanwhile, the vision module also has a self-diagnostic function. When the system detects that the light transmittance of the lens window 6 has decreased beyond a preset threshold, it actively triggers the pulsed, powerful blowing mode of the fan module. Through intermittent high-speed airflow impact, it peels off and blows away stubborn oil droplets already attached to the surface of the lens window 6. The above control logic can achieve fully automatic cleaning and maintenance of the vision module without manual intervention from the user, significantly improving the environmental adaptability and long-term reliability of the range hood 1 vision system.

[0067] It should be further noted that the range hood 1 in this application is mainly a top-mounted range hood 1. The smoke inlet is usually located directly above the stove. The cooking fumes, under the combined action of heat lifting and negative pressure from the fan 3, enter the range hood 1 through the smoke inlet, are filtered by the oil filter, and are discharged through the duct. The air outlet of the guide component 4 is oriented towards the smoke inlet. This allows the airflow blown from the guide component 4 to both clean the outer surface of the visual module and continue flowing towards the smoke inlet after blowing on the visual module, thereby carrying the oil fume particles around the visual module towards the smoke inlet. This accelerates the local oil fume discharge efficiency, reduces the residence time of oil fumes around the visual module, further reduces the risk of contamination of the visual module, achieves functional synergy between the cleaning airflow and the exhaust airflow, and at the same time avoids affecting the smoke extraction effect of the range hood.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A range hood vision system for use in a range hood, characterized in that, Includes a visual module and a wind power module; The vision module is connected to the housing of the range hood, and the detection area of ​​the vision module faces the stove. The fan module is connected to the housing of the range hood and is set at the position corresponding to the vision module. The wind power module includes a fan and a flow guide component. The air inlet of the flow guide component is connected to the air outlet of the fan, and the air outlet of the flow guide component faces the vision module, so that the airflow output by the fan blows onto the outer surface of the vision module.

2. The smoke machine vision system according to claim 1, characterized in that, It also includes a support shell, which is installed inside the housing of the range hood. The support shell includes a support part and a partition part. The support part forms an accommodating space, and the partition part is disposed in the accommodating space to divide the accommodating space into a first accommodating cavity and a second accommodating cavity. The wind power module is disposed in the first receiving cavity, and the vision module is disposed in the second receiving cavity.

3. The smoke machine vision system according to claim 2, characterized in that, The supporting shell also includes a cover plate, which together with the supporting part forms the receiving space. The cover plate has a clearance hole corresponding to the air inlet of the fan.

4. The smoke machine vision system according to claim 2, characterized in that, The air outlet of the air guide member can extend out of the first receiving cavity and output airflow toward the vision module, and the air outlet of the air guide member is formed with a grille.

5. The smoke machine vision system according to claim 2, characterized in that, The vision module includes a camera body and a lens window; The camera body is disposed in the first receiving cavity. The supporting shell has a perforation corresponding to the lens position of the camera body. The lens window is disposed in the perforation and the perforation is closed. The lens of the camera body is disposed corresponding to the lens window.

6. The smoke machine vision system according to claim 5, characterized in that, The airflow guide member has a reflective portion, which is inclined and located relative to the air inlet of the airflow guide member, guiding the airflow towards the air outlet of the airflow guide member.

7. The smoke machine vision system according to claim 6, characterized in that, The flow guiding member has a flow guiding portion, which is inclined and the extension line of the axis of the flow guiding portion can intersect the plane of the lens window.

8. The smoke machine vision system according to claim 2, characterized in that, The air guide component and the fan are an integral structure. A linear drive mechanism is provided inside the bearing shell. The output end of the linear drive mechanism is connected to the outer shell of the fan. The linear drive mechanism is arranged in a vertical direction and can drive the air outlet of the air guide component to extend or retract into the shell of the range hood.

9. The smoke machine vision system according to claim 2, characterized in that, The air guide component and the fan are separate structures. A linear drive mechanism is provided inside the bearing shell. The output end of the linear drive mechanism is connected to the air guide component. The linear drive mechanism is arranged in a vertical direction and can drive the air outlet of the air guide component to extend or retract into the shell of the range hood.

10. A range hood, characterized in that, Includes the housing and the smoke machine vision system according to any one of claims 1-9; The housing has a smoke inlet, and the air outlet of the air guide member is oriented toward the smoke inlet.

Images