A range hood with a combustion detection function
By integrating image acquisition devices and gas concentration detectors into range hoods, multi-angle monitoring of the combustion status of gas stoves can be achieved, solving gas combustion safety issues, improving the timeliness and accuracy of detection, and reducing safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO FOTILE KITCHEN WARE CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, gas combustion safety issues are not detected in a timely manner, leading to gas leaks and incomplete combustion, which pose safety hazards and require additional equipment, increasing installation complexity and cost.
The range hood with combustion detection function covers the flame area of the combustion device through the first and second image acquisition devices, combined with gas concentration detection, to achieve multi-angle monitoring of the combustion status and trigger the alarm device to cut off the gas supply in time.
It improves the timeliness and accuracy of combustion detection, reduces monitoring blind spots, enhances safety protection performance, and avoids serious consequences such as combustion and explosion.
Smart Images
Figure CN224534336U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of range hood technology, and in particular to a range hood with combustion detection function. Background Technology
[0002] With the widespread use of gas stoves in kitchens, gas combustion safety has become an increasingly important concern for users. To prevent safety hazards caused by gas leaks and incomplete combustion in kitchens, current technologies typically involve installing air sensors, rooftop exhaust fans, and matching exhaust ducts in the kitchen to monitor the concentration of harmful gases, and activating ventilation or issuing alarms when the concentration exceeds the limit.
[0003] Existing methods often rely on installing additional equipment besides kitchen appliances in the kitchen ceiling, such as air sensors and independent exhaust systems. This not only increases installation costs and complexity but also limits the applicability of this solution in ordinary family kitchens. Current technologies typically require the gas sensor to issue an alarm signal only after the carbon monoxide concentration from incomplete combustion reaches a certain level, resulting in a lag in response. Furthermore, they cannot immediately shut off the gas valve or extinguish open flames in the event of a gas leak, posing a safety hazard that could lead to serious consequences such as explosions. Utility Model Content
[0004] The purpose of this utility model is to address at least one of the aforementioned existing technical problems by providing a range hood with a combustion detection function. By monitoring the flame combustion status from multiple angles and linking it with an alarm device, the range hood improves the timeliness and accuracy of combustion detection.
[0005] This utility model provides a range hood with combustion detection function, which is applied to a stove with a first combustion device and a second combustion device. The range hood includes a range hood body, an oil cup, a smoke baffle, a first image acquisition device, a second image acquisition device, a control device, and an alarm device. The oil cup is detachably connected to the main body of the range hood, and the smoke baffle is rotatably connected to the main body of the range hood. The oil cup is positioned on the range hood near the stove. A first mounting position for accommodating a first image acquisition device is provided on the oil cup facing the stove. The inner wall of the smoke baffle faces the first combustion device and the second combustion device, and a second mounting position for accommodating a second image acquisition device is provided on the inner wall. The total field of view of the first image acquisition device and the second image acquisition device can cover at least one of the flame emission areas of the first combustion device and the second combustion device. The first image acquisition device, the second image acquisition device, and the alarm device are electrically connected to the control device.
[0006] In a possible implementation, the field of view of the first image acquisition device can cover one of the flame emission areas of the first combustion device and the second combustion device, and the field of view of the second image acquisition device can cover the other of the flame emission areas of the first combustion device and the second combustion device.
[0007] In a possible implementation, the range hood further includes a gas concentration detection device, which is located on the side of the oil cup facing the stove.
[0008] In a possible implementation, the range hood further includes a detection chamber having a first detection position and a second detection position; The first image acquisition device is set at the first detection position, and the gas concentration detection device is set at the second detection position. The first detection position and the second detection position are arranged adjacent to each other.
[0009] In a possible implementation, the gas concentration detection device includes a first gas concentration sensor and a second gas concentration sensor; The inlet of the first gas concentration sensor faces the combustion zone of the first combustion device, and the inlet of the second gas concentration sensor faces the combustion zone of the second combustion device.
[0010] In a possible implementation, the range hood further includes a slide rail mechanism, with the smoke baffle and the oil cup respectively mounted on the slide rail mechanism. The first image acquisition device can be slidably connected to the oil cup via the slide rail mechanism, and the second image acquisition device can be slidably connected to the smoke baffle via the slide rail mechanism. In a possible implementation, the range hood body is provided with an air outlet device, and the range hood also includes a protective cover with ventilation holes. The protective cover is disposed on the acquisition surface of the first image acquisition device and / or the second image acquisition device, and the ventilation holes are connected to the diversion pipe of the air outlet device.
[0011] In a possible implementation, the inner wall of the smoke baffle has a groove that can accommodate the second image acquisition device so that the acquisition surface of the second image acquisition device is flush with the inner wall.
[0012] In a possible implementation, a rotating mechanism is provided within the groove, and the second image acquisition device is mounted on the rotating mechanism so that the second image acquisition device can rotate within the groove via the rotating mechanism.
[0013] In a possible implementation, the smoke baffle has a rotatable angle of 0°-135°.
[0014] The range hood with combustion detection function provided by this utility model has the following beneficial effects: This utility model provides a range hood with combustion detection function, applied to a stove with a first combustion device and a second combustion device. The range hood includes a main body, an oil cup, a smoke baffle, a first image acquisition device, a second image acquisition device, a control device, and an alarm device. The oil cup is detachably connected to the main body of the range hood, and the smoke baffle is rotatably connected to the main body of the range hood. The oil cup is positioned near the stove, and a first mounting position for accommodating the first image acquisition device is provided on the oil cup facing the stove. The inner wall of the smoke baffle faces the first and second combustion devices, and a second mounting position for accommodating the second image acquisition device is provided on the inner wall. The total field of view of the first and second image acquisition devices can cover at least one of the flame emission areas of the first and second combustion devices. The first image acquisition device, the second image acquisition device, and the alarm device are electrically connected to the control device. The fact that the field of view of the first and second image acquisition devices can cover the flame emission area of the stove's combustion devices enables multi-angle monitoring of the overall combustion state and the state of the flame root of the stove, effectively improving the safety protection performance of the range hood. Attached Figure Description
[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of the range hood in the embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the range hood in the embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the range hood in the embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the range hood in the embodiment of this utility model.
[0017] The following is supplementary explanation of the attached figures: 11. Range hood body; 12. Oil cup; 13. Smoke baffle; 21. First image acquisition device; 22. Second image acquisition device; 30. Gas concentration detection device; 40. Stove; 41. First combustion device; 42. Second combustion device. Detailed Implementation
[0018] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0019] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.
[0020] See Figures 1-4 This application provides a range hood with combustion detection function, which is applied to a stove 40 with a first combustion device 41 and a second combustion device 42. The range hood includes a range hood body 11, an oil cup 12, a smoke baffle 13, a first image acquisition device 21, a second image acquisition device 22, a control device, and an alarm device. The oil cup 12 is detachably connected to the range hood body 11, and the smoke baffle 13 is rotatably connected to the range hood body 11. The oil cup 12 is positioned on the range hood near the cooktop 40. The oil cup 12 has a first mounting position for accommodating the first image acquisition device 21 at the position facing the cooktop 40. The inner wall of the smoke baffle 13 faces the first combustion device 41 and the second combustion device 42, and has a second mounting position for accommodating the second image acquisition device 22. The total field of view of the first image acquisition device 21 and the second image acquisition device 22 can cover at least one of the flame emission areas of the first combustion device 41 and the second combustion device 42. The first image acquisition device 21, the second image acquisition device 22, and the alarm device are electrically connected to the control device.
[0021] In this way, the field of view of the first image acquisition device 21 and the second image acquisition device 22 can cover the flame area of the combustion device of the stove 40, thereby realizing multi-angle monitoring of the overall combustion state and flame root state of the stove 40, reducing the monitoring blind spots caused by pot obstruction or oil fume interference, and enabling more timely and accurate judgment of whether the gas is fully burned, and driving the alarm device to provide a prompt when there is an abnormality, effectively improving the safety protection performance of the range hood.
[0022] Specifically, a double-burner gas stove 40 is installed on the kitchen countertop. A first combustion device 41 and a second combustion device 42 are arranged on the countertop of the stove 40, spaced apart. A range hood body 11 is fixed above the stove 40. The range hood body 11 contains an exhaust device and a filter assembly, and is used to extract cooking fumes. The lower end of the range hood body 11 is detachably connected to an oil cup 12. The oil cup 12 collects oil residue generated during cooking. A first mounting position is machined on the side wall of the oil cup 12 facing the stove 40. A first image acquisition device 21 is installed in the first mounting position and faces the first combustion device 41 and the second combustion device 42 of the stove 40 through the first mounting position. The first image acquisition device 21 is used to acquire an overall image of the flame.
[0023] Specifically, the smoke baffle 13 is rotatably connected to the range hood body 11 via a pivot, and the smoke baffle 13 can open or close within a preset angle range. The smoke baffle 13 is used to expand the negative pressure zone to improve the smoke collection effect. The inner wall of the smoke baffle 13 faces the direction of the stove 40, and a second mounting position is processed on the inner wall. The second image acquisition device 22 is embedded in the second mounting position. The acquisition surface of the second image acquisition device 22 faces the flame outlet area of the first combustion device 41 and the second combustion device 42. The second image acquisition device 22 is used to acquire images of the flame root.
[0024] In one embodiment, the field of view of the first image acquisition device 21 covers the first combustion device 41 and the second combustion device 42, and the field of view of the second image acquisition device 22 covers the first combustion device 41 and the second combustion device 42; in another embodiment, the field of view of the first image acquisition device 21 covers the first combustion device 41, and the field of view of the second image acquisition device 22 covers the second combustion device 42; in yet another embodiment, the field of view of the first image acquisition device 21 covers the first combustion device 41, and the field of view of the second image acquisition device 22 also covers the first combustion device 41.
[0025] Specifically, the first image acquisition device 21 is used to acquire first image data of the target combustion device, and the second image acquisition device 22 is used to acquire second image data. The first image data and the second image data characterize the overall combustion state of the flame of the target combustion device. The first image data includes the flame color, length and stability of the target combustion device. The control device is used to receive and process the first image data and the second image data, and to determine whether the first image data and the second image data meet the preset difference conditions based on the built-in image recognition algorithm. The preset difference conditions indicate at least one of the following: abnormal flame color, flame length exceeding the preset range, flame root separating from the nozzle or flame image not being detected.
[0026] Specifically, when the first image data and the second image data meet the preset difference conditions, the control device controls the alarm device to output alarm information, which includes an audible alarm signal and / or a visual alarm signal, to prompt the user to check the working status of the combustion device; the control device can also link the solenoid valve of the stove 40 to perform a shut-off operation to cut off the gas supply.
[0027] In another embodiment, the stove 40 is a multi-burner gas stove 40.
[0028] Furthermore, the field of view of the first image acquisition device 21 can cover one of the flame emission areas of the first combustion device 41 and the second combustion device 42, and the field of view of the second image acquisition device 22 can cover the other of the flame emission areas of the first combustion device 41 and the second combustion device 42. Thus, the acquisition fields of view of the first image acquisition device 21 and the second image acquisition device 22 can respectively correspond to the flame emission areas of different combustion devices, forming a complementary monitoring relationship to simultaneously and independently detect the flames of both combustion devices. This improves the completeness and accuracy of flame status monitoring, enabling more timely and precise judgment of whether the combustion of each combustion device is complete, and triggering an alarm in case of abnormalities, thereby enhancing gas safety.
[0029] In one embodiment, the oil cup 12 is disposed at the lower end of the range hood body 11 and is located above the stove 40. The oil cup 12 is provided with a first mounting position on the first side wall facing the stove 40. The first image acquisition device 21 is fixed to the first mounting position and is used to acquire the flame image of the first combustion device 41. The second image acquisition device 22 is used to acquire the flame image of the second combustion device 42.
[0030] In another embodiment, the first image acquisition device 21 is used to acquire flame images of the second combustion device 42, and the second image acquisition device 22 is used to acquire flame images of the first combustion device 41.
[0031] In another embodiment, when the first combustion device 41 is working and the second combustion device 42 is not working, the first image acquisition device 21 and the second image acquisition device 22 are used to acquire flame images of the first combustion device 41.
[0032] Furthermore, the range hood also includes a gas concentration detection device 30, which is located on the side of the oil cup 12 facing the cooktop 40. Thus, by adding a gas concentration detection device 30 to the side of the oil cup 12 closest to the cooktop 40, the gas concentration detection device 30 can detect gas leaks around the cooktop 40 in real time, based on the flame status determined by the image acquisition device. This achieves complementarity between image detection and gas detection, thereby further enhancing the safety protection capabilities of the range hood.
[0033] In one embodiment, the oil cup 12 has an installation cavity on the side facing the stove 40, and the gas concentration detection device 30 is embedded in the installation cavity. The detection port of the gas concentration detection device 30 faces the flame area of the stove 40, and the gas concentration detection device 30 is used to collect gas concentration data. The gas concentration detection device 30 is electrically connected to the control device, and the control device is also electrically connected to the image acquisition device and the alarm device.
[0034] In one embodiment, when the gas concentration detection device 30 detects that the concentration has reached the warning threshold, the control device activates a mild audible and visual alert from the alarm device to remind the user that there is a slight leak in the stove 40; when the gas concentration detection device 30 detects that the concentration has reached the alarm threshold, the control device activates a continuous and rapid audible and visual alert.
[0035] Furthermore, the range hood also includes a detection chamber, which has a first detection position and a second detection position; The first image acquisition device 21 is located at the first detection position, and the gas concentration detection device 30 is located at the second detection position, with the first and second detection positions arranged adjacent to each other. By setting up a detection chamber in the range hood, and forming the first and second detection positions arranged adjacently within the detection chamber to accommodate the image acquisition device and the gas concentration detection device 30 respectively, the modular integration of the two detection devices is achieved. This results in a compact structure, reasonable arrangement, and ease of installation and maintenance, while avoiding the space waste and complex wiring problems caused by separate installations.
[0036] In one embodiment, the detection chamber is installed on the side of the oil cup 12 near the stove 40. The detection chamber has a rectangular shell structure and a transparent window at the front end. Inside the detection chamber, there are adjacent first and second detection positions. A first image acquisition device 21 is fixed in the first detection position, with its acquisition surface facing the flame area of the stove 40. A gas concentration detection device 30 is fixed in the second detection position, with its detection port facing the stove 40. An electrical interface is provided on the side of the detection chamber away from the stove 40. The outputs of both the first image acquisition device 21 and the gas concentration detection device 30 are electrically connected to the control device through this interface.
[0037] Furthermore, the gas concentration detection device 30 includes a first gas concentration sensor and a second gas concentration sensor; The inlet of the first gas concentration sensor faces the combustion zone of the first combustion device 41, and the inlet of the second gas concentration sensor faces the combustion zone of the second combustion device 42.
[0038] By setting a first gas concentration sensor and a second gas concentration sensor, and having their inlets correspond to the ignition zones of different combustion devices, the gas concentration detection device 30 can independently detect each combustion device, improving the accuracy and safety of the detection.
[0039] In one embodiment, a first gas concentration sensor is fixed on the left side of the side wall of the oil cup 12, with its inlet facing the flame area of the first combustion device 41 and its outlet connected to the exhaust duct of the range hood via an air guide hole; a second gas concentration sensor is fixed on the right side of the side wall of the oil cup 12, with its inlet facing the flame area of the second combustion device 42 and its outlet connected to the exhaust duct of the range hood via an air guide hole.
[0040] Furthermore, the range hood also includes a slide rail mechanism, with the smoke baffle 13 and oil cup 12 respectively mounted on the slide rail mechanism. The first image acquisition device 21 can be slidably connected to the oil cup 12 through the slide rail mechanism, and the second image acquisition device 22 can be slidably connected to the smoke baffle 13 through the slide rail mechanism. By setting a sliding rail mechanism on the smoke baffle 13 and the oil cup 12, each image acquisition device can be installed and adjusted in a sliding connection manner, which simplifies the assembly and disassembly operation and facilitates flexible adjustment of the position of the image acquisition device during actual use, thereby making the range hood more adaptable and easier to maintain.
[0041] In one embodiment, the slide rail mechanism includes parallel guide rails and a slider that cooperates with the guide rails. A first guide rail is provided on the outer wall of the oil cup 12, and a first image acquisition device 21 is mounted on the first slider. The first slider cooperates with the first guide rail, allowing the first image acquisition device 21 to slide along the outer wall of the oil cup 12. A second guide rail is provided on the inner wall of the smoke baffle 13, and a second image acquisition device 22 is mounted on the second slider. The second slider cooperates with the second guide rail, allowing the second image acquisition device 22 to slide along the inner wall of the smoke baffle 13. Each slide rail is provided with a limiting member to limit the sliding stroke.
[0042] Furthermore, the range hood body 11 is equipped with an air outlet device, and the range hood also includes a protective cover with ventilation holes. The protective cover is installed on the acquisition surface of the first image acquisition device 21 and / or the second image acquisition device 22, and the ventilation holes are connected to the diversion pipe of the air outlet device. By installing a protective cover with ventilation holes on the acquisition surface of the image acquisition device and connecting the ventilation holes to the diversion pipe of the range hood's air outlet device, an airflow barrier can be formed on the surface of the image acquisition device, preventing oil fumes and grease from directly adhering to the lens, thereby maintaining the clarity of the acquired image, extending the service life of the image acquisition device, and reducing the frequency of maintenance and cleaning.
[0043] In one embodiment, a protective cover is disposed on the acquisition surface of the first image acquisition device 21 and / or the second image acquisition device 22, and the vent is connected to the diversion pipe of the air outlet device.
[0044] In one embodiment, an air outlet device is installed inside the main body 11 of the range hood. The air outlet of the air outlet device is connected to a diversion pipe, and the end of the diversion pipe is connected to a protective cover. The protective cover is an annular cover, which is fixed to the front end of the acquisition face of the first image acquisition device 21 or the second image acquisition device 22. Multiple vents are evenly distributed on the protective cover, and each vent is connected to the diversion pipe. When the air outlet device is working, the airflow is ejected from the vents through the diversion pipe.
[0045] Specifically, the protective cover is provided with an oleophobic layer, which can be a fluorinated coating or a nano-hydrophobic and oleophobic film.
[0046] Furthermore, the inner wall of the smoke baffle 13 has a groove that can accommodate the second image acquisition device 22, so that the acquisition surface of the second image acquisition device 22 is flush with the inner wall. Forming a groove in the inner wall of the smoke baffle 13 and accommodating the second image acquisition device 22 therein, with its acquisition surface flush with the inner wall, prevents the image acquisition device from protruding from the surface of the smoke baffle 13 and being directly washed away by oil fumes or accumulating oil stains, thereby maintaining the clarity of the acquired image and improving monitoring stability.
[0047] In one embodiment, the smoke baffle 13 is made of metal or composite material, and its inner wall is machined with rectangular or circular grooves. The second image acquisition device 22 is fixed inside the groove by fasteners, with its acquisition surface flush with the inner wall surface of the smoke baffle 13. A limiting step is provided at the edge of the groove to limit the installation position of the second image acquisition device 22.
[0048] In another embodiment, a sealing ring is also provided in the groove, which is used to seal the connection between the second image acquisition device 22 and the smoke baffle 13.
[0049] Furthermore, a rotating mechanism is provided within the groove, and the second image acquisition device 22 is mounted on the rotating mechanism so that the second image acquisition device 22 can rotate within the groove via the rotating mechanism. By providing a rotating mechanism within the groove and mounting the second image acquisition device 22 on the rotating mechanism, allowing it to rotate within the groove, the acquisition angle can be adjusted according to the actual position of different stoves 40 and combustion devices, ensuring more accurate image acquisition of the flame root and the flame outlet area.
[0050] In one embodiment, mounting holes are provided on both sides of the groove, and a rotating shaft is rotatably connected within the mounting holes. Both ends of the rotating shaft are fixed to the mounting holes by fasteners, and a mounting base is provided in the middle of the rotating shaft. The second image acquisition device 22 is fixed on the mounting base, which can rotate around the rotating shaft within a preset range of the groove. A limiting protrusion is provided at the bottom of the groove, which can cooperate with a limiting groove on the mounting base to limit the rotation angle of the second image acquisition device 22.
[0051] Furthermore, the rotatable angle of the smoke baffle 13 is 0°-135°. In this way, when the smoke baffle 13 is closed, it fits against the main body 11 of the range hood to prevent the oil fumes from leaking out. When the smoke baffle 13 is open, it provides a reasonable monitoring field of view for the image acquisition device and prevents excessive rotation from causing mechanical interference or damage, thereby improving the safety and adaptability of the range hood.
[0052] In one embodiment, the smoke baffle 13 is rotatably connected to the range hood body 11 via a rotating shaft, with both ends of the rotating shaft set in pre-reserved bearings in the body. The ends of the rotating shaft are provided with arc-shaped limiting grooves, the arc length of which corresponds to 135°. Limiting pins are installed on the connecting parts of the smoke baffle 13, and these pins are inserted into the limiting grooves. When the smoke baffle 13 rotates with the rotating shaft, the limiting pins slide within the limiting grooves.
[0053] Preferably, the rotatable angle of the smoke baffle 13 is 0°-90°.
[0054] The following describes the working process of the range hood in a preferred embodiment of this application, using a specific application scenario as an example: S1. The user ignites the first combustion device 41 and the second combustion device 42 of the stove 40, and the air outlet device of the range hood body 11 is turned on. S2. The first image acquisition device 21 and the second image acquisition device 22 are activated simultaneously to acquire combustion image data and transmit it to the control device. S3. Gas concentration detection device 30 detects the ambient gas around stove 40 to obtain gas detection data and transmit the gas detection data to the control device. S4. If the combustion image data or gas concentration data meets the abnormal conditions, the control device drives the alarm device to output alarm information. S5. When cooking is finished, the user turns off the stove 40, the range hood stops working, the first image acquisition device 21, the second image acquisition device 22 and the gas concentration detection device 30 stop detection, and the alarm device enters standby mode.
[0055] The following describes specific embodiments of this application based on the above technical solution.
[0056] Example 1 Please see Figures 1-4 This embodiment provides a range hood with combustion detection function, which is applied to a stove 40 with a first combustion device 41 and a second combustion device 42. The range hood includes a range hood body 11, an oil cup 12, a smoke baffle 13, a first image acquisition device 21, a second image acquisition device 22, a control device, and an alarm device. The oil cup 12 is detachably connected to the range hood body 11, and the smoke baffle 13 is rotatably connected to the range hood body 11. The oil cup 12 is positioned on the range hood near the cooktop 40. The oil cup 12 has a first mounting position for accommodating the first image acquisition device 21 at the position facing the cooktop 40. The inner wall of the smoke baffle 13 faces the first combustion device 41 and the second combustion device 42, and has a second mounting position for accommodating the second image acquisition device 22. The total field of view of the first image acquisition device 21 and the second image acquisition device 22 can cover at least one of the flame emission areas of the first combustion device 41 and the second combustion device 42. The first image acquisition device 21, the second image acquisition device 22, and the alarm device are electrically connected to the control device.
[0057] The field of view of the first image acquisition device 21 can cover one of the flame-out areas of the first combustion device 41 and the second combustion device 42, and the field of view of the second image acquisition device 22 can cover the other of the flame-out areas of the first combustion device 41 and the second combustion device 42.
[0058] The baffle plate 13 has a rotatable angle of 0°-135°. The range hood also includes a gas concentration detection device 30, which is located on the side of the oil cup 12 facing the cooktop 40. The range hood also includes a detection chamber with a first detection position and a second detection position. The first image acquisition device 21 is disposed at the first detection position, and the gas concentration detection device 30 is disposed at the second detection position, with the first and second detection positions being adjacent to each other. The gas concentration detection device 30 includes a first gas concentration sensor and a second gas concentration sensor; the air inlet of the first gas concentration sensor faces the flame outlet area of the first combustion device 41, and the air inlet of the second gas concentration sensor faces the flame outlet area of the second combustion device 42.
[0059] Example 2 The similarities between Embodiment 2 and Embodiment 1 will not be repeated here. The difference between Embodiment 2 and Embodiment 1 is that the range hood also includes a slide rail mechanism. The smoke baffle 13 and the oil cup 12 are respectively set on the slide rail mechanism. The first image acquisition device 21 can be slidably connected to the oil cup 12 through the slide rail mechanism, and the second image acquisition device 22 can be slidably connected to the smoke baffle 13 through the slide rail mechanism. Example 3 The similarities between Embodiment 3 and Embodiment 1 will not be repeated here. The difference between Embodiment 3 and Embodiment 1 is that an air outlet device is provided inside the main body 11 of the range hood, and the range hood also includes a protective cover with ventilation holes. The protective cover is set on the acquisition surface of the first image acquisition device 21 and the second image acquisition device 22, and the ventilation holes are connected to the diversion pipe of the air outlet device. The inner wall of the smoke baffle 13 has a groove that can accommodate the second image acquisition device 22 so that the acquisition surface of the second image acquisition device 22 is flush with the inner wall. A rotating mechanism is provided in the groove, and the second image acquisition device 22 is mounted on the rotating mechanism so that the second image acquisition device 22 can rotate in the groove through the rotating mechanism.
[0060] The above-disclosed embodiments are merely several preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A range hood with combustion detection function, characterized in that, Applied to a stove (40) having a first combustion device (41) and a second combustion device (42), the range hood includes a range hood body (11), an oil cup (12), a smoke baffle (13), a first image acquisition device (21), a second image acquisition device (22), a control device, and an alarm device; The oil cup (12) is detachably connected to the range hood body (11), and the smoke baffle (13) is rotatably connected to the range hood body (11). The oil cup (12) is located on the range hood near the stove. The oil cup (12) facing the stove has a first mounting position for accommodating the first image acquisition device (21). The inner wall of the smoke baffle (13) faces the first combustion device (41) and the second combustion device (42). The inner wall has a second mounting position for accommodating the second image acquisition device (22). The total field of view of the first image acquisition device (21) and the second image acquisition device (22) can cover at least one of the flame area of the first combustion device (41) and the flame area of the second combustion device (42). The first image acquisition device (21), the second image acquisition device (22), and the alarm device are electrically connected to the control device.
2. The range hood according to claim 1, characterized in that, The field of view of the first image acquisition device (21) can cover one of the flame area of the first combustion device (41) and the flame area of the second combustion device (42), and the field of view of the second image acquisition device (22) can cover the other of the flame area of the first combustion device (41) and the flame area of the second combustion device (42).
3. The range hood according to claim 1, characterized in that, The range hood also includes a gas concentration detection device (30), which is located on the side of the oil cup (12) facing the stove (40).
4. The range hood according to claim 3, characterized in that, The range hood also includes a detection chamber, which has a first detection position and a second detection position; The first image acquisition device (21) is set on the first detection position, and the gas concentration detection device (30) is set on the second detection position. The first detection position and the second detection position are set adjacent to each other.
5. The range hood according to claim 3, characterized in that, The gas concentration detection device (30) includes a first gas concentration sensor and a second gas concentration sensor; The inlet of the first gas concentration sensor faces the ignition area of the first combustion device (41), and the inlet of the second gas concentration sensor faces the ignition area of the second combustion device (42).
6. The range hood according to any one of claims 1-5, characterized in that, The range hood also includes a slide rail mechanism. The smoke baffle (13) and the oil cup (12) are respectively mounted on the slide rail mechanism. The first image acquisition device (21) can be slidably connected to the oil cup (12) through the slide rail mechanism. The second image acquisition device (22) can be slidably connected to the smoke baffle (13) through the slide rail mechanism.
7. The range hood according to any one of claims 1-5, characterized in that, The range hood body (11) is provided with an air outlet device. The range hood also includes a protective cover with ventilation holes. The protective cover is set on the acquisition surface of the first image acquisition device (21) and / or the second image acquisition device (22). The ventilation holes are connected to the diversion pipe of the air outlet device.
8. The range hood according to any one of claims 1-5, characterized in that, The inner wall of the smoke baffle (13) has a groove that can accommodate the second image acquisition device (22) so that the acquisition surface of the second image acquisition device (22) is flush with the inner wall.
9. The range hood according to claim 8, characterized in that, A rotating mechanism is provided in the groove, and the second image acquisition device (22) is mounted on the rotating mechanism so that the second image acquisition device (22) can rotate in the groove through the rotating mechanism.
10. The range hood according to any one of claims 1-5, characterized in that, The rotatable angle of the smoke baffle (13) is 0°-135°.