Range hood

Abstract

The utility model provides a range hood, and relates to the field of range hood equipment, the range hood comprises a fan, a fan adjusting mechanism, a smoke barrier, an opening and closing mechanism, an air inlet, at least one detection device and a control device, the air inlet is arranged between the fan and the smoke barrier, the fan adjusting mechanism is electrically connected with the fan, the opening and closing mechanism is electrically connected with the smoke barrier, and the detection device is electrically connected with the control device. The smoke barrier is used for adjusting the air inlet amount of the air inlet, the control device is electrically connected with the at least one detection device, the at least one detection device comprises a light sensor, the light sensor is used for detecting the illumination intensity, and the control device is electrically connected with the fan adjusting mechanism and the opening and closing mechanism and used for controlling the fan adjusting mechanism and / or the opening and closing mechanism. The fan adjusting mechanism is used for opening or closing the fan, and the opening and closing mechanism is used for opening or closing the smoke barrier. Whether the extractor hood is on fire or not is judged through the light sensor, the fan adjusting mechanism and the opening and closing mechanism are matched with the light sensor to form fire protection measures, and the safety of the extractor hood is improved.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a range hood. Background Technology

[0002] In daily life, the kitchen, as a source of fire and a gathering place for various household appliances, presents a potential fire hazard. During use, grease accumulates in range hoods, which can easily ignite when exposed to an open flame. Currently, range hoods generally use fire-resistant NTC (thermal sensors) and other thermistors to detect fire and trigger fire protection. However, the resistance-temperature characteristics of these thermistors change with the environment and time, making their accuracy susceptible to environmental influences. This means that fire-resistant NTC and other thermistors have slow response times and poor long-term stability, potentially leading to delayed fire protection activation and an inability to respond promptly to fire hazards. Utility Model Content

[0003] The purpose of this utility model is to address at least one of the aforementioned existing technical problems by providing a range hood that can quickly identify whether the range hood is on fire and implement fire protection measures, thereby improving the safety of the range hood.

[0004] This utility model provides a range hood, which includes a fan, a fan adjustment mechanism, a smoke baffle, an opening and closing mechanism, an air inlet, at least one detection device, and a control device.

[0005] The air inlet is disposed between the fan and the smoke baffle. The fan adjustment mechanism is electrically connected to the fan, and the opening and closing mechanism is electrically connected to the smoke baffle. The smoke baffle is used to adjust the air intake volume of the air inlet. The control device is electrically connected to the at least one detection device.

[0006] The at least one detection device includes a light sensor for detecting light intensity within a preset range. The control device is electrically connected to the fan adjustment mechanism and the opening and closing mechanism, respectively. The control device is used to control the fan adjustment mechanism and / or the opening and closing mechanism. The fan adjustment mechanism is used to turn the fan on or off, and the opening and closing mechanism is used to turn the smoke baffle on or off.

[0007] In a possible implementation, the at least one detection device further includes a proximity sensor for detecting whether a target object exists within a preset range, and the light sensor and the proximity sensor are integrated.

[0008] In a possible implementation, the at least one detection device includes a first detection device and a second detection device, which are housed within the inner cavity of the range hood.

[0009] In a possible implementation, the range hood further includes a fire extinguishing device connected to the control device.

[0010] In a possible implementation, the light sensor includes a photodiode, a signal processing module, and an analog-to-digital converter, wherein the photodiode, the signal processing module, and the analog-to-digital converter are connected in sequence.

[0011] In a possible implementation, the range hood further includes an alarm device, which is electrically connected to the control device.

[0012] In a possible implementation, the proximity sensor includes an infrared emitting module and an infrared receiving module, which are electrically connected to the control device.

[0013] In a possible implementation, the range hood further includes a power source connected to both the at least one detection device and the control device.

[0014] In a possible implementation, the fan adjustment mechanism can also adjust the fan speed, and the control device is used to control the fan adjustment mechanism to raise or lower the fan speed.

[0015] In a possible implementation, the control device is electrically connected to the stove and is capable of controlling the stove's opening and closing.

[0016] The range hood provided by this utility model has the following beneficial effects:

[0017] This utility model provides a range hood, including a fan, a fan adjustment mechanism, a smoke baffle, an opening and closing mechanism, an air inlet, at least one detection device, and a control device. The air inlet is located between the fan and the smoke baffle. The fan adjustment mechanism is electrically connected to the fan, and the opening and closing mechanism is electrically connected to the smoke baffle. The smoke baffle is used to adjust the air intake of the air inlet. The control device is electrically connected to at least one detection device, which includes a light sensor for detecting light intensity within a preset range. The control device is electrically connected to both the fan adjustment mechanism and the opening and closing mechanism, and is used to control the fan adjustment mechanism and / or the opening and closing mechanism. The fan adjustment mechanism is used to turn the fan on or off, and the opening and closing mechanism is used to turn the smoke baffle on or off. Thus, the range hood can determine whether it is on fire using the light sensor. The fan adjustment mechanism and the opening and closing mechanism, in conjunction with the light sensor, form a fire protection measure, improving the safety of the range hood. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the structure of the range hood in the embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the range hood in the embodiment of this utility model;

[0021] Figure 3 This is a schematic diagram of the monitoring and protection system in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the monitoring and protection system in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the monitoring and protection system in Embodiment 2 of this utility model;

[0024] Figure 6 This is a schematic diagram of the monitoring and protection system in Embodiment 3 of this utility model.

[0025] The following is supplementary explanation of the attached figures:

[0026] 1. Range hood; 11. First detection device; 111. First light sensor; 112. First proximity sensor; 12. Second detection device; 121. Second light sensor; 122. Second proximity sensor; 13. Control device; 141. Fan adjustment mechanism; 142. Fan; 151. Opening and closing mechanism; 152. Smoke baffle; 16. Air inlet; 17. Alarm device; 18. Fire extinguishing device; 19. Power supply; 2. Cooktop. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] See Figure 1 This application provides a range hood 1, which includes a fan 142, a fan adjustment mechanism 141, a smoke baffle 152, an opening and closing mechanism 151, an air inlet 16, at least one detection device, and a control device 13. The air inlet 16 is disposed between the fan 142 and the smoke baffle 152. The fan adjustment mechanism 141 is electrically connected to the fan 142, and the opening and closing mechanism 151 is electrically connected to the smoke baffle 152. The smoke baffle 152 is used to adjust the air intake of the air inlet 16. The control device 13 is electrically connected to at least one detection device, which includes a light sensor for detecting the light intensity within a preset range. The control device 13 is electrically connected to both the fan adjustment mechanism 141 and the opening and closing mechanism 151. The control device 13 is used to control the fan adjustment mechanism 141 and / or the opening and closing mechanism 151. The fan adjustment mechanism 141 is used to turn the fan 142 on or off, and the opening and closing mechanism 151 is used to turn the smoke baffle 152 on or off. In this way, the range hood 1 can detect abnormal changes in light in the kitchen to determine whether a fire has occurred and then automatically adjust the fan 142 and / or the smoke baffle 152, thus having a fire warning function and improving the safety of the range hood 1 system.

[0030] Specifically, the fan 142 is used to draw in cooking fumes from the kitchen. The fan 142 is installed inside the range hood 1. The fan adjustment mechanism 141 adjusts the smoke extraction capacity of the fan 142 by controlling the on / off switch and the fan speed. The baffle 152 is used to adjust the air intake of the air inlet 16. By controlling the opening and closing mechanism 151, the baffle 152 can be opened or closed as needed, thereby controlling the size of the air inlet 16. The air inlet 16 and the baffle of the range hood 1 are exposed within the user's field of vision. The control device 13 is a microcontroller (MCU), and the control device 13 is electrically connected to at least one detection device.

[0031] Specifically, the embodiments of this specification include a range hood 1, which is equipped with a detection and protection system to determine whether a fire has occurred. The detection and protection system includes a fan 142, a fan adjustment mechanism 141, a smoke baffle 152, an opening and closing mechanism 151, an air inlet 16, at least one detection device, and a control device 13. The detection and protection system determines whether a fire has occurred in the range hood 1 through at least one detection device and transmits a detection signal to the control device 13. The control device 13 is used to issue control commands to the fan adjustment mechanism 141 and the opening and closing mechanism 151 to adjust the fan 142 and the smoke baffle 152. When a fire has occurred in the range hood 1, the control device 13 issues a control command to make the fan adjustment mechanism 141 shut down the fan 142 and the opening and closing mechanism 151 close the smoke baffle 152, thereby closing the air inlet 16 and preventing the fire source from contacting oxygen to form a fire extinguishing effect.

[0032] In one embodiment, a fire occurs when the light sensor detects that the light intensity L is greater than the preset light intensity Z and there are multiple sudden changes in light intensity. The preset light intensity Z is 200 lux to 2000 lux.

[0033] Optionally, the smoke baffle 152 is rotatably connected or push-pull connected to the opening and closing device, which is used to open or close the smoke baffle 152.

[0034] like Figure 2 In one embodiment, the smoke baffle 152 is rotatably connected to the opening and closing device, which can adjust the opening and closing state of the smoke baffle 152 to adjust the air intake volume of the air inlet 16.

[0035] Furthermore, at least one detection device also includes a proximity sensor for detecting the presence of a target object within a preset range. The light sensor and proximity sensor are integrated into the device. The proximity sensor can detect the presence of a target object within the preset range and, in conjunction with the light sensor, prevent accidental contact by the user, thereby protecting user safety. The integrated design of the light sensor and proximity sensor also reduces the installation and maintenance costs of the detection device.

[0036] Understandably, when users wipe and clean the range hood 1, they may put their hands inside to clean it. If the range hood 1 is accidentally turned on at this time, it is very dangerous. Additionally, when no adults are home, young children may also put their hands inside the working range hood cavity out of curiosity. Therefore, a protection mechanism against accidental contact is needed to prevent the fan 142 from operating while a hand is inside the cavity. However, existing measures generally employ structural protection, installing a partition mesh inside the cavity.

[0037] Specifically, in this embodiment of the application, a proximity sensor in at least one detection device detects whether there is a target object within a preset range to determine whether there is a false touch. The target object is a person or an object. When there is a false touch, the control device 13 sends a control command to the fan adjustment mechanism 141 to make the fan adjustment mechanism 141 shut down the fan 142, thereby reducing the damage caused by the false touch.

[0038] In one exemplary embodiment, at least one detection device includes a first detection device 11 and a second detection device 12, which are housed within the inner cavity of the range hood 1. Thus, the first detection device 11 and the second detection device 12 can respectively cover different detection areas, thereby improving the monitoring capability of the range hood 1, achieving rapid response, and optimizing the user experience.

[0039] Specifically, the first detection device 11 includes a first light sensor 111 and a first proximity sensor 112; the second detection device 12 includes a second light sensor 121 and a second proximity sensor 122. The first light sensor 111 is used to determine whether there is a fire within a first preset range, and the first proximity sensor 112 is used to determine whether there is an accidental touch within the first preset range; the second light sensor 121 is used to determine whether there is a fire within a second preset range, and the second proximity sensor 122 is used to determine whether there is an accidental touch within the second preset range.

[0040] Specifically, the range hood 1 works in conjunction with the cooktop 2, which includes a first integrated cooktop and a second integrated cooktop. The first detection device 11 is used to monitor the first integrated cooktop, and the second detection device 12 is used to monitor and protect the second integrated cooktop.

[0041] Specifically, the range hood 1 includes a first inner wall, a second inner wall, a third inner wall, and a fourth inner wall. The first inner wall, the second inner wall, the third inner wall, and the fourth inner wall are arranged adjacent to each other in sequence. The first inner wall and the third inner wall are arranged opposite each other, and the second inner wall and the fourth inner wall are arranged opposite each other. The panel where the first inner wall is located is used to face the user. The third inner wall is located on the back of the range hood 1 and is used to be set on the side close to the wall. The second inner wall is located on the left inner wall of the range hood 1 and is perpendicular to the first inner wall and the third inner wall. The fourth inner wall is located on the left inner wall of the range hood 1 and is perpendicular to the first inner wall and the third inner wall.

[0042] In one possible embodiment, the first detection device 11 and the second detection device 12 are respectively disposed on the second inner wall and the fourth inner wall; in another possible embodiment, the first detection device 11 and the second detection device 12 are respectively disposed on one side and the other side of the first inner wall; in yet another possible embodiment, the first detection device 11 and the second detection device 12 are respectively disposed on one side and the other side of the third inner wall.

[0043] Furthermore, the range hood 1 also includes a fire extinguishing device 18, which is connected to the control device 13. By connecting the fire extinguishing device 18 to the control device 13, the control device 13 can activate the fire extinguishing device 18 after detecting a fire signal, thereby improving the fire extinguishing efficiency of the range hood 1.

[0044] Specifically, the fire extinguishing device 18 is installed inside or outside the range hood 1, and the fire extinguishing device 18 is used to release the fire extinguishing agent through the fire extinguishing channel.

[0045] Optionally, the fire extinguishing device 18 can be a dry powder fire extinguisher, a gas fire extinguisher, or a fire extinguishing agent fire extinguisher.

[0046] Specifically, the light sensor includes a photodiode, a signal processing module, and an analog-to-digital converter, which are connected in sequence. The photodiode can convert different light intensities into different electrical signals, enabling fast response to changes in light intensity and improving the detection accuracy of the light sensor.

[0047] Specifically, the light sensor converts different light intensities into different voltage signals, and the light sensor detects changes in light intensity at the nanosecond level.

[0048] In one embodiment, a photodiode is used to convert an optical signal into an electrical signal, and a signal processing module includes a signal amplifier for amplifying the weak signal generated by the photodiode to a measurable range, and an analog-to-digital converter (ADC) for converting the amplified and processed analog electrical signal into a digital signal.

[0049] Furthermore, the range hood 1 also includes an alarm device 17, which is electrically connected to the control device 13. Thus, when the range hood 1 detects a fire, it can immediately issue an alarm to alert the user, thereby reducing the negative impact of the fire.

[0050] Specifically, after the first detection device 11 and / or the second detection device 12 detects the fire signal, it sends it to the control device 13. The control device 13 sends a control command to the alarm device 17, and the alarm device 17 sends an alarm signal to the range hood 1 or other terminals.

[0051] Specifically, the alarm device 17 is connected to the user terminal and other smart home systems. When an abnormal situation is detected, the alarm signal can be sent to the user's mobile phone or other devices in the home through the smart home network, further enhancing the safety of the range hood 1.

[0052] Furthermore, the proximity sensor includes an infrared emitting module and an infrared receiving module, which are electrically connected to the control device 13. Thus, the infrared emitting module and the infrared receiving module can monitor the approach of objects within a preset range in real time, thereby improving the accuracy and safety of using the range hood 1.

[0053] Specifically, the infrared emitting module is used to emit infrared beams. When a target object, such as a hand or other object, approaches within a preset range, the infrared light is reflected back to the infrared receiving module. After detecting the reflected light signal, the infrared receiving module can accurately determine the proximity of the object.

[0054] Furthermore, the range hood 1 also includes a power supply 19, which is connected to at least one detection device and one control device 13. In this way, at least one detection device and one control device 13 can operate independently without relying on the power supply 19 of other components, thus improving the reliability of the detection device and the control device 13.

[0055] Specifically, the control device 13, the first detection device 11, and the second detection device 12 are all equipped with independent power supplies 19. In this embodiment, the control device 13, the first detection device 11, and the second detection device 12 are all equipped with 3.3V power supplies 19.

[0056] Specifically, the fan adjustment mechanism 141 can also adjust the speed of the fan 142, and the control device 13 is used to control the fan adjustment mechanism 141 to raise or lower the speed of the fan 142. The fan adjustment mechanism 141 can raise or lower the speed of the fan 142 according to the data of the detection device, automatically optimizing the performance of the fan 142, and is suitable for various application scenarios.

[0057] Specifically, if the light intensity is greater than the preset intensity and the duration is less than the preset time within the preset range, it means that the user has generated an open flame by tossing the pan during cooking. The control device 13 sends a control command to the fan adjustment mechanism 141 to reduce the speed of the fan 142, so as to prevent the open flame from being drawn into the inner cavity of the range hood 1 and causing a fire.

[0058] Furthermore, the control device 13 is electrically connected to the stove 2, and the control device 13 can control the opening and closing of the stove 2. In the event of a fire or emergency, the control device 13 of the range hood 1 can cut off the power supply 19 of the stove 2, thereby improving the safety of the kitchen.

[0059] Specifically, when at least one detection device detects a fire and / or accidental activation, the control device 13 sends a control command to the power supply 19 of the stove 2, which shuts off the power supply 19 of the stove 2 to turn off the stove 2.

[0060] The working process of the range hood 1 in this application embodiment is described below with reference to a specific application scenario:

[0061] When the range hood 1 is turned on, the fan 142 rotates and the baffle 152 opens, and the oil fumes enter the flue from the air inlet 16. The first detection device 11 and / or the second detection device 12 obtain the light intensity L within a preset range of a preset period of time.

[0062] If the light intensity L is greater than the preset light intensity Z, then record the duration T1 during which the light intensity L is greater than the preset light intensity Z;

[0063] If the duration T1 is greater than or equal to the preset time T z Control device 13 controls fan adjustment mechanism 141 to shut down fan 142 and controls opening and closing mechanism 151 to close smoke baffle 152; if duration T1 is less than preset time T z The control device 13 controls the fan adjustment mechanism 141 to lower the operating speed of the fan 142.

[0064] The following describes specific embodiments of this application based on the above technical solution.

[0065] Example 1

[0066] Please see Figures 1-4This embodiment provides a range hood 1, which includes a fan 142, a fan adjustment mechanism 141, a smoke baffle 152, an opening and closing mechanism 151, an air inlet 16, at least one detection device, and a control device 13. The air inlet 16 is disposed between the fan 142 and the smoke baffle 152. The fan adjustment mechanism 141 is electrically connected to the fan 142, and the opening and closing mechanism 151 is electrically connected to the smoke baffle 152. The smoke baffle 152 is used to adjust the air intake of the air inlet 16. The control device 13 is electrically connected to at least one detection device, which includes a light sensor for detecting the light intensity within a preset range. The control device 13 is electrically connected to both the fan adjustment mechanism 141 and the opening and closing mechanism 151. The control device 13 is used to control the fan adjustment mechanism 141 and / or the opening and closing mechanism 151. The fan adjustment mechanism 141 is used to turn the fan 142 on or off, and the opening and closing mechanism 151 is used to turn the smoke baffle 152 on or off. At least one detection device also includes a proximity sensor for detecting the presence of a target object within a preset range, and a light sensor and a proximity sensor are integrated together. The fan adjustment mechanism 141 can also adjust the speed of the fan 142, and the control device 13 is used to control the fan adjustment mechanism 141 to raise or lower the speed of the fan 142.

[0067] At least one detection device includes a first detection device 11 and a second detection device 12, which are housed within the inner cavity of the range hood 1. The range hood 1 cooperates with a cooktop 2, which includes a first integrated cooktop and a second integrated cooktop. The first detection device 11 is used to monitor the first integrated cooktop, and the second detection device 12 is used to monitor and protect the second integrated cooktop. A control device 13 is electrically connected to the cooktop 2 and is capable of controlling the opening and closing of the cooktop 2.

[0068] If at least one detection device detects a fire and / or accidental activation, the control device 13 sends a control command to the power supply 19 of the stove 2, causing the power supply 19 of the stove 2 to be turned off, thus shutting down the stove 2. The first detection device 11 and the second detection device 12 are respectively located on one side and the other side of the third inner wall.

[0069] The light sensor includes a photodiode, a signal processing module, and an analog-to-digital converter, which are connected sequentially. The proximity sensor includes an infrared emitting module and an infrared receiving module, which are electrically connected to the control device 13. The control device 13, the first detection device 11, and the second detection device 12 are all equipped with a 3.3V power supply 19.

[0070] Example 2

[0071] See Figure 5The similarities between Embodiment 2 and Embodiment 1 will not be repeated here. The difference between Embodiment 2 and Embodiment 1 is that the detection and protection system also includes an alarm device 17, which is electrically connected to the control device 13. After the first detection device 11 and / or the second detection device 12 detects a fire signal, it sends it to the control device 13. The control device 13 sends a control command to the alarm device 17, and the alarm device 17 sends an alarm signal to the range hood 1 or other terminals.

[0072] Example 3

[0073] See Figure 6 The similarities between Embodiment 3 and Embodiment 1 will not be repeated here. The difference between Embodiment 2 and Embodiment 1 is that the detection and protection system also includes a fire extinguishing device 18, which is connected to the control device 13. By connecting the fire extinguishing device 18 to the control device 13, the control device 13 can activate the fire extinguishing device 18 after detecting a fire signal, thus improving the fire extinguishing efficiency of the range hood 1. The fire extinguishing device 18 is installed inside or outside the range hood 1 and is used to release extinguishing agent through the fire extinguishing channel.

[0074] 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, characterized in that, The range hood includes a fan (142), a fan adjustment mechanism (141), a smoke baffle (152), an opening and closing mechanism (151), an air inlet (16), at least one detection device, and a control device (13). The air inlet (16) is disposed between the fan (142) and the smoke baffle (152). The fan adjustment mechanism (141) is electrically connected to the fan (142), and the opening and closing mechanism (151) is electrically connected to the smoke baffle (152). The smoke baffle (152) is used to adjust the air intake of the air inlet (16). The control device (13) is electrically connected to the at least one detection device. The at least one detection device includes a light sensor for detecting light intensity within a preset range. The control device (13) is electrically connected to the fan adjustment mechanism (141) and the opening and closing mechanism (151) respectively. The control device (13) is used to control the fan adjustment mechanism (141) and / or the opening and closing mechanism (151). The fan adjustment mechanism (141) is used to turn the fan (142) on or off, and the opening and closing mechanism (151) is used to turn the smoke baffle (152) on or off.

2. The range hood according to claim 1, characterized in that, The at least one detection device further includes a proximity sensor, which is used to detect whether there is a target object within a preset range, and the light sensor and the proximity sensor are integrated.

3. The range hood according to claim 2, characterized in that, The at least one detection device includes a first detection device (11) and a second detection device (12), which are housed in the inner cavity of the range hood.

4. The range hood according to any one of claims 1-3, characterized in that, The range hood also includes a fire extinguishing device (18), which is connected to the control device (13).

5. The range hood according to any one of claims 1-3, characterized in that, The light sensor includes a photodiode, a signal processing module, and an analog-to-digital converter, which are connected in sequence.

6. The range hood according to any one of claims 1-3, characterized in that, The range hood also includes an alarm device (17), which is electrically connected to the control device (13).

7. The range hood according to claim 2, characterized in that, The proximity sensor includes an infrared emitting module and an infrared receiving module, which are electrically connected to the control device (13).

8. The range hood according to any one of claims 1-3, characterized in that, The range hood also includes a power supply (19), which is connected to the at least one detection device and the control device (13) respectively.

9. The range hood according to any one of claims 1-3, characterized in that, The fan adjustment mechanism (141) can also adjust the speed of the fan (142), and the control device (13) is used to control the fan adjustment mechanism (141) to raise or lower the speed of the fan (142).

10. The range hood according to any one of claims 1-3, characterized in that, The control device (13) is electrically connected to the stove (2), and the control device (13) can control the opening and closing of the stove (2).

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