An oil fume extraction device

Abstract

This utility model belongs to the field of electrical technology and discloses an oil fume extraction device. The oil fume extraction device includes a body with a smoke inlet and a panel. The panel is movably installed at the smoke inlet. The device also includes an air detection module with an air inlet and an air outlet. The air detection module is installed on the back side of the panel, and the air inlet is exposed on the front side of the panel. The air detection module is fixed relative to the panel, so that the position of the air inlet changes with the movement of the panel. This utility model discloses an oil fume extraction device that improves the sensitivity of oil fume detection, thereby enhancing the oil fume extraction effect.

Description

Technical Field

[0001] This utility model relates to electrical technology, and in particular to an oil fume extraction device. Background Technology

[0002] As people's demands for quality of life increase, kitchen fume extraction equipment is widely used in households to keep kitchen air clean and improve the user's cooking experience.

[0003] To improve the intelligence of kitchen fume extraction equipment, existing technology provides a type of equipment that includes a main body and a PM2.5 sensor installed within it. The PM2.5 sensor has a detection inlet and a detection outlet on one side, and an air inlet and an air outlet on the upper front side of the main body. The PM2.5 sensor is installed inside the main body, with the air inlet connected to the detection inlet and the air outlet connected to the detection outlet. This allows outside air to enter the PM2.5 sensor through the air inlet and detection inlet for detection, and the detected air flows out through the detection outlet and air outlet. The controller of the fume extraction equipment determines the kitchen air quality based on the detected PM2.5 values ​​and then controls the extraction fan speed accordingly.

[0004] In existing oil fume extraction equipment, the PM2.5 sensor is usually installed on the front, top, or left and right sides of the top of the machine, and the air inlet and outlet are located on the same side of the machine. This results in the PM2.5 being far from the smoke inlet, making it difficult to quickly detect the occurrence of oil fume escape. Utility Model Content

[0005] One objective of this invention is to provide an oil fume extraction device that can improve the sensitivity and reliability of kitchen air quality detection and enhance the user's cooking experience.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A fume extraction device includes a body having a smoke inlet and a panel, the panel being movably mounted at the smoke inlet. The fume extraction device also includes an air detection module having an air inlet and an air outlet. The air detection module is mounted on the back side of the panel, and the air inlet is exposed on the front side of the panel. The air detection module is fixed relative to the panel so that the position of the air inlet changes with the movement of the panel.

[0008] As an optional technical solution for fume extraction equipment, the air detection module is provided with an air intake part with an air intake channel on the side facing the panel. The front end of the air intake channel forms the air inlet. The panel is provided with a mounting hole, and the air intake part is inserted into the mounting hole.

[0009] As an optional technical solution for a fume extraction device, the air inlet is covered with an air intake filter, which is flush with the front side of the panel.

[0010] And / or, the air intake is cylindrical, and the air intake channel is a cylindrical channel.

[0011] As an optional technical solution for a fume extraction device, the fume extraction device further includes a controller and a drive mechanism. The drive mechanism drives the panel to rotate. The drive mechanism and the air detection module are both communicatively connected to the controller. The controller can control the operation of the drive mechanism according to the detection results of the air detection module, so as to control the opening angle and / or flipping speed of the panel.

[0012] As an optional technical solution for fume extraction equipment, the air outlet and the air inlet are located on the same side of the air detection module, and the panel is provided with a vent hole, through which the air outlet communicates with the front space of the panel.

[0013] As an optional technical solution for oil fume extraction equipment, the air outlet is located on the back side of the panel;

[0014] And / or, the air detection module includes a mounting housing and an air detection module disposed within the mounting housing. The air detection module has a detection inlet and a detection outlet. The mounting housing is provided with an air inlet and an air outlet. The air inlet is connected to the detection inlet, and the air outlet is connected to the detection outlet.

[0015] As an optional technical solution for fume extraction equipment, the detection inlet and the detection outlet are located on the same side of the air detection module. The mounting shell protrudes from the side facing the panel and has an air outlet. The air outlet has an air outlet channel. The first end of the air outlet channel is directly connected to the detection outlet and the second end forms the air outlet. The extension direction of the air outlet is parallel to the panel.

[0016] As an optional technical solution for a fume extraction device, the air outlet channel extends downward from the first end to the second end; and / or, the side of the air outlet facing the panel is a plane, and the plane is in contact with the panel.

[0017] As an optional technical solution for a fume extraction device, the fume extraction device further includes a rear cover and a mounting plate disposed on the back side of the panel. The mounting plate is partially raised in a direction away from the panel to form a mounting boss. The mounting boss and the panel enclose an installation space. The mounting boss has an installation opening that communicates with the installation space. The air detection module is installed in the installation space through the installation opening. The rear cover is detachably installed at the installation opening and seals the installation opening.

[0018] As an optional technical solution for oil fume extraction equipment, the front side of the air detection module is attached to the back side of the panel, and the rear side of the air detection module abuts against the rear cover;

[0019] And / or, a positioning socket is provided on the mounting boss, and the lower side of the air detection module is inserted into the positioning socket.

[0020] The beneficial effects of this utility model are as follows:

[0021] The oil fume extraction device provided by this utility model has an air inlet of the air detection module located on the front side of the panel, which makes the air inlet closer to the oil fume escape outlet, thereby enabling rapid detection of upward-escaping oil fumes and improving the sensitivity of oil fume escape detection. At the same time, since the air detection module is fixed relative to the panel and the position of the air inlet changes with the rotation of the panel, the position of the air inlet moves forward as the panel is opened, making the detection point of the air detection module more flexible and improving the usability of the air detection module. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the fume extraction device provided in this embodiment of the utility model;

[0023] Figure 2 This is a partial structural schematic diagram of the fume extraction device provided in this embodiment of the utility model;

[0024] Figure 3 yes Figure 2 A schematic diagram of the structure after removing the back cover from the middle section;

[0025] Figure 4 yes Figure 3 A magnified view of a section at point I;

[0026] Figure 5 This figure is a schematic diagram of the structure of the air detection module provided in the embodiment of this utility model;

[0027] Figure 6 This is a schematic diagram of the disassembled structure of the air detection module provided in this embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the main housing structure provided in an embodiment of the present invention;

[0029] Figure 8 This is a cross-sectional view of the main housing provided in an embodiment of the present utility model;

[0030] Figure 9 This is a schematic diagram of the structure of an oil fume extraction device provided in another embodiment of this utility model.

[0031] 1. Air detection module; 11. Air detection module; 111. Detection inlet; 112. Detection outlet; 12. Mounting housing; 121. Main body of housing; 1211. Air inlet communication hole; 1212. Air outlet communication hole; 122. Air inlet section; 1221. Air inlet channel; 1222. Air inlet; 123. Air outlet section; 1231. Air outlet channel; 1232. Arc-shaped end wall; 1233. Main channel wall; 1234. Inclined channel wall; 1235. Air outlet; 124. Cover; 13. Connecting wire; 14. Seal; 15. Air inlet filter; 16. Air outlet filter;

[0032] 2. Panel;

[0033] 3. Mounting plate; 31. Main body plate; 32. Mounting boss; 321. Boss base plate; 322. Boss side; 323. Flange; 324. First side plate; 3241. Positioning socket; 3242. First positioning groove; 325. Second side plate; 3251. Upper positioning groove; 3252. Second positioning groove;

[0034] 4. Control module; 41. Positioning protrusion;

[0035] 5. Back cover; 6. Smoke hood. Detailed Implementation

[0036] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0038] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] like Figure 1 , Figure 4 and Figure 5 As shown, this embodiment provides an oil fume extraction device including an air detection module 1 to improve the oil fume extraction effect of the oil fume extraction device and enhance the long-term performance of the air detection module 1.

[0041] The fume extraction device provided in this embodiment includes a main body and an air detection module 1. The main body has a fume hood 6 with a fume inlet and a panel 2. The panel 2 is movably installed at the fume inlet to open or close the fume inlet by rotation. The air detection module 1 has an air inlet 1222 and an air outlet 1235. The air detection module 1 is installed on the back side of the panel 2 and is fixed relative to the panel 2 so that the position of the air inlet 1222 changes with the movement of the panel 2.

[0042] The oil fume extraction device provided by this utility model has an air inlet 1222 of the air detection module 1 located on the front side of the panel 2, which makes the air inlet 1222 close to the oil fume escape port, thereby enabling rapid detection of upward-escaping oil fumes and improving the sensitivity of oil fume escape detection. At the same time, since the air detection module 1 is fixed relative to the panel 2, and the position of the air inlet 1222 changes with the movement of the panel 2, when the panel 2 is opened, the position of the air inlet 1222 moves forward with the opening of the panel 2, thereby making the detection point of the air detection module 1 more flexible and improving the usability of the air detection module 1.

[0043] The fume extraction equipment also includes a controller and a drive mechanism. The drive mechanism rotates the panel 2, opening or closing the fume inlet. Both the drive mechanism and the air detection module 1 are communicatively connected to the controller. The controller can control the operation of the drive mechanism based on the detection results from the air detection module 1, thereby controlling the opening angle and / or rotation speed of the panel 2. Because the panel 2 can rotate, when opened, the air inlet 1222 is positioned closer to the user cooking, allowing the air detection module 1 to better detect the air quality near the user, thus improving the user experience of the fume extraction equipment.

[0044] This setup allows the air quality detection module 1 to monitor during cooking, and also controls the opening speed and frequency of the control panel 2. Specifically, when the reading from the air detection module 1 suddenly increases, it indicates that some cooking fumes are escaping upwards to the front of the panel 2, meaning that the opening angle of the panel 2 is not sufficient and should be increased. If the panel 2 is currently in the process of opening, it indicates that the opening speed of the panel 2 is relatively slow compared to the rate of fumes generation, and the opening speed of the panel 2 should be increased to meet the needs of fume extraction more quickly and ensure the fume extraction effect of the fume extraction equipment.

[0045] It is worth noting that the specific structure of the controller and drive mechanism can be set with reference to existing technology, which is not the focus of this utility model and will not be elaborated here.

[0046] In this embodiment, the air outlet 1235 is located on the back side of the panel 2, so that the air outlet 1235 is located in the negative pressure zone when the fume extraction device is running. This allows the negative pressure generated by the operation of the fan to expel the air inside the air detection module 11 as quickly as possible, reducing the residence time of the air inside the air detection module 11. This reduces the probability of grease accumulating inside the air detection module 11, thereby ensuring the long-term performance of the air detection module 11.

[0047] In other embodiments, such as Figure 9 As shown, the air outlet 1235 and the air inlet 1222 are located on the same side of the air detection module 1. A vent hole is provided on the panel 2, and the air outlet 1235 communicates with the front space of the panel 2 through the vent hole. Specifically, the air detection module 1 has an air outlet 123 protruding from the side facing the panel 2. The air outlet 123 is inserted into the panel 2 and has an air outlet channel 1231. The front end of the air outlet channel 1231 forms the air outlet 1235.

[0048] In this embodiment, the air detection module 1 has an air intake portion 122 with an air intake channel 1221 on the side facing the panel 2. The front end of the air intake channel 1221 forms an air inlet 1222. A mounting hole is provided on the panel 2, and the air intake portion 122 is inserted into the mounting hole. By providing the air intake portion 122 and inserting it into the panel 2, it is convenient to position the air detection module 1 on the panel 2, improving the ease and reliability of installation. In other embodiments, the air inlet 1222 can be directly connected to the mounting hole.

[0049] The air detection module 1 includes a mounting housing 12 and an air detection module 11 disposed inside the mounting housing 12. The air detection module 11 has a detection inlet 111 and a detection outlet 112. An air inlet 122 protrudes from the side of the mounting housing 12 facing the panel 2. By providing the mounting housing 12, the versatility of the air detection module 11 can be improved, as well as the structural flexibility and ease of installation of the air detection module 1. In other embodiments, the air inlet 122 can be directly provided protruding from one side of the air detection module 11.

[0050] It is worth noting that the air detection module 11 can be a PM2.5 sensor or other sensors that require air circulation for air quality detection. The air detection module 11 can adopt existing general-purpose modules, that is, the structure of the air detection module 11 can adopt existing structures, and the specific structure and detection principle of the air detection module 11 can be set with reference to existing technology. This is not the focus of the improvement of this utility model, and this utility model does not impose specific limitations in this regard.

[0051] In this embodiment, the air intake 122 is a cylindrical structure perpendicular to the panel 2. The panel 2 has a mounting hole, in which the air intake 122 is inserted. The mounting hole is a circular hole. By setting the air intake 122 in a cylindrical structure, the processing difficulty of the air intake 122 and the mounting hole can be reduced, the cost can be reduced, and the smoothness of airflow in the air intake channel 1221 can be improved. Since the air intake 122 extends along the first side perpendicular to the air detection module 11, the air detection module 1 can meet the installation requirements while the air intake channel 1221 can be as short as possible, thereby shortening the airflow path of the air detection module 11 and better ensuring the detection sensitivity and reliability of the air detection module 1.

[0052] In other embodiments, the air intake 122 may also be a rectangular block structure or a structure of other shapes, as long as the air intake 122 is inserted into the mounting hole.

[0053] The air detection module 11 has a first side facing the panel 2, with both the detection inlet 111 and the detection outlet 112 located on this first side, making the structure of the air detection module 11 more versatile. To improve the ease of setting the air outlet 1235, the mounting housing 12 has a protruding air outlet 123 on the side facing the panel 2. The air outlet 123 extends in a direction parallel to the panel 2, and an air outlet channel 1231 is provided within the air outlet 123. The first end of the air outlet channel 1231 communicates with the detection outlet 112, and the other end of the air outlet channel 1231 forms the air outlet 1235. By setting the air outlet 123, the orientation of the air outlet 1235 can be controlled through the structure of the air outlet 123, thereby ensuring that while the detection inlet 111 and the detection outlet 112 are located on the same side of the air detection module 11, the air inlet 1222 and the air outlet 1235 have different orientations, improving the ease of setting the air detection module 1.

[0054] In other embodiments, the detection inlet 111 and detection outlet 112 of the air detection module 11 may not be located on the same side of the air detection module 11. For example, the detection inlet 111 may be located on the side of the air detection module 11 facing the panel 2, and the detection outlet 112 may be located on the lower side of the air detection module 11. In this case, the air outlet 1235 may be directly connected to the detection outlet 112.

[0055] In this embodiment, the air outlet 123 extends downward, meaning the air outlet channel 1231 extends downward from the first end to the second end, and the lower end of the air outlet channel 1231 forms an air outlet 1235. By providing a downwardly extending air outlet 123, the air inlet channel 1221 is positioned downward, which effectively improves the smoothness of exhaust from the air outlet channel 1231, thereby further reducing the time the airflow stays inside the air detection module 11, reducing the probability of grease accumulating in the detection channel of the air detection module 11, and improving the detection sensitivity and reliability of the air detection module 11. In other embodiments, the air outlet 123 may also extend in other directions.

[0056] In this embodiment, the fume extraction device is a side-suction range hood. When the panel 2 is opened to its maximum angle, the panel 2 is vertically positioned, and the air outlet channel 1231 is also vertically positioned. This prevents the fan lubricant inside the air detection module 11 from leaking out, thus improving the usability of the air detection module 1. In other embodiments, the fume extraction device can be an island-style range hood or an integrated stove, etc., with a panel structure.

[0057] In this embodiment, the side of the air outlet 123 facing the panel 2 is a plane, which fits into the panel 2. This improves the reliability and stability of the air detection module 1 on the panel 2, and also reduces the probability of grease entering between the air detection module 1 and the panel 2.

[0058] The air detection module 1 also includes an air intake filter 15, which is installed at the air inlet 1222 to filter the airflow entering the detection inlet 111, preventing dust and other impurities from entering the interior of the air detection module 11 and causing blockage of the internal detection channels. The air intake filter 15 can be welded or installed at the air inlet 1222 in a detachable manner. In this embodiment, the air intake filter 15 is flush with the front side of the panel 2 to better ensure the surface flatness of the fume extraction equipment, facilitating cleaning and maintenance of the fume extraction equipment.

[0059] The air detection module 1 also includes an exhaust filter 16, which is installed at the exhaust port 1235 to prevent external dust or impurities from entering the air detection module 11 through the exhaust port 1235, thereby preventing the exhaust channel 1231 and the detection channel inside the air detection module 11 from being blocked and improving the long-term performance of the air detection module 11.

[0060] like Figures 2 to 4 As shown, to improve the ease of installation of the air detection module 1, the fume extraction device also includes a rear cover 5 and a mounting plate 3 located on the back side of the panel 2. A mounting protrusion 32, positioned opposite and spaced from the panel 2, has an installation opening on its side. The mounting protrusion 32 and the back side of the panel 2 enclose an installation space, and the side wall of the mounting protrusion 32 has a vent hole communicating with the installation space. The air detection module 1 is installed in the installation space through the installation opening, with the air outlet 1235 exposed through the vent hole. The rear cover 5 is detachable and covers the installation opening. This arrangement allows the air detection module 1 to be installed in the installation space and concealed by the rear cover 5, with only the air outlet 1235 communicating with the external environment through the vent hole. This reduces the impact of fumes on the air detection module 1, improving the user experience. Simultaneously, the rear cover 5 also protects the air detection module 1, reducing the probability of damage. Specifically, the mounting plate 3 includes a main body plate portion 31 that is attached to the back side of the panel 2, and a mounting boss 32 that protrudes rearward relative to the main body plate portion 31.

[0061] Furthermore, the mounting boss 32 includes a boss base plate portion 321 that is opposite to and spaced apart from the panel 2, and a boss side portion 322 that connects the boss base plate portion 321 and the main body plate portion 31. The boss base plate portion 321 is provided with a mounting opening, and the boss side portion 322 is provided with a vent hole. The air outlet portion 123 is inserted into the vent hole, and the air outlet filter 16 is located at the opening of the vent hole, so as to ensure smooth exhaust while avoiding the problem of the air detection module 1 protruding from the mounting boss 32.

[0062] In this embodiment, a positioning socket 3241 is provided on the mounting boss 32. The lower side of the air detection module 1 is inserted into the positioning socket 3241, which facilitates the installation and positioning of the air detection module 1 on the mounting boss 32. The front side of the air detection module 1 is attached to the panel 2 and the rear side is attached to the rear cover 5, so that the air detection module 1 is sandwiched between the panel 2 and the rear cover 5 in the front-to-back direction. This simple structure reduces the probability of the air detection module 1 shaking in the installation space, ensuring the ease of installation of the air detection module 1 while improving the ease of disassembly and assembly.

[0063] In this embodiment, the fume extraction device also includes a control module 4. The control module 4 is installed within the installation space and located between the panel 2 and the rear cover 5. The control module 4 has a touch area on the front side of the panel 2 to realize touch control of the fume extraction device. Installing the control module 4 within the installation space simplifies the overall structure of the fume extraction device, improves the utilization rate of the mounting boss 32, and also reduces the difficulty of connecting the air detection module 1 to the control board, improving wiring convenience. The specific structure of the control module 4 and the control principle for the fume extraction device can be set with reference to existing technology, which is not the focus of this utility model and will not be described in detail here.

[0064] Furthermore, the air detection module 1 also includes a connecting wire 13, one end of which is connected to the air detection module 11, and the other end extends out of the mounting shell 12 and is connected to the control board inside the control module 4. The connecting wire 13 is located in the installation space, thereby improving the convenience of wiring the air detection module 1.

[0065] Furthermore, the control module 4 is installed on the upper side of the air detection module 1, and the upper side of the air detection module 1 abuts against the lower side of the control module 4. The lower side of the air detection module 1 abuts against the mounting boss 32, and the upper side of the control module 4 abuts against the mounting boss 32. This ensures that the upper limit of the control module 4 in the height direction is between the mounting boss 32 and the air detection module 1, and the upper limit of the air detection module 1 in the height direction is between the mounting boss 32 and the control module 4. This ensures the stability and reliability of the air detection module 1 and the control module 4 in the height direction, and improves the convenience of disassembly and assembly.

[0066] To improve the ease of installation of the air detection module 1, a first side plate 324 is provided on the lower side of the installation opening, and a positioning socket 3241 is provided on the first side plate 324. A second side plate 325 is provided on the upper side of the installation opening, and an upper positioning groove 3251 is provided on the second side plate 325. A positioning protrusion 41 is provided on the upper side of the control module 4, and the positioning protrusion 41 is inserted into the upper positioning groove 3251 to realize the installation and positioning of the control module 4 on the mounting boss 32.

[0067] Furthermore, one end of the first side plate portion 324 protrudes upward along its length and has a first positioning groove 3242. The lower side of the control module 4 abuts against the lower wall of the first positioning groove 3242, and the left and right sides of the control module 4 abut against the other wall of the first positioning groove 3242. The second side plate portion 325 protrudes downward along its left and right directions and has a second positioning groove 3252. The upper side of the control module 4 abuts against the upper wall of the second positioning groove 3252, and the left and right sides of the control module 4 abut against the other wall of the second positioning groove 3252. By providing the first positioning groove 3242 and the second positioning groove 3252, the position of the control module 4 in the height and left and right directions can be better restricted, improving the installation convenience of the control module 4. In other embodiments, the first positioning groove 3242 can be provided only on the first side plate portion 324, or the second positioning groove 3252 can be provided only on the second side plate portion 325.

[0068] In this embodiment, the edge of the mounting opening is folded towards the panel 2 to form a flange portion 323. The lower flange portion 323 near the panel 2 is folded upward to form a first side plate portion 324, and the upper flange portion 323 near the panel 2 is folded downward to form a second side plate portion 325. The rear cover 5 is inserted into the mounting opening and abuts against the flange portion 323. This arrangement ensures that the distance between the first side plate portion 324 and the second side plate portion 325 and the panel 2 is less than the distance between the boss base plate portion 321 and the panel 2. As a result, when the rear cover 5 is installed on the mounting boss 32, the back of the rear cover 5 can be flush with the back of the boss base plate portion 321, thereby improving the overall flatness and facilitating the cleaning of the fume extraction equipment.

[0069] like Figures 6 to 8 As shown, the mounting housing 12 further includes a mounting cavity in which the air detection module 11 is installed. A separate air inlet communication hole 1211 and an air outlet communication hole 1212 are provided on the cavity wall opposite the air inlet 1222. The air inlet communication hole 1211 communicates directly with both the detection inlet 111 and the air inlet channel 1221. The air outlet communication hole 1212 communicates with the detection outlet 112 and the air outlet channel 1231. The orthographic projection of the air inlet communication hole 1211 on the first side covers the detection inlet 111, and the orthographic projection of the air outlet communication hole 1212 on the first side covers the detection outlet 112.

[0070] Both the intake port 1211 and the exhaust port 1212 are circular holes to accommodate the detection outlet 112 on the air detection module 11. The diameter of the intake port 1211 is smaller than that of the exhaust port 1212 to ensure smooth exhaust.

[0071] To improve the ease of assembly and disassembly of the air detection module 11, the mounting housing 12 includes a main housing and a cover 124 that are interlocked in a first direction. An air inlet 122 and an air outlet 123 protrude from the side of the main housing away from the cover 124. The main housing and the cover 124 together form a mounting cavity. Specifically, the main housing includes a main housing portion 121, which is detachably connected to the cover 124 and forms the mounting cavity. The air inlet 122 and the air outlet 123 protrude from the side of the main housing portion 121 away from the cover 124. Further, a wire through hole is provided on the side wall of the main housing portion 121, through which the connecting wire 13 passes out of the mounting housing 12.

[0072] In this embodiment, the air outlet 1235 is rectangular to facilitate the structural arrangement of the air outlet 123. Furthermore, the cross-sections of the air outlet 123 and the air outlet channel 1231 are rectangular to reduce the machining difficulty of the air outlet 123. In other embodiments, the outer contour of the cross-section of the air outlet 123 may also be trapezoidal or other shapes.

[0073] To improve airflow smoothness, in this embodiment, the end wall of the air outlet channel 1231 away from the air outlet 1235 is an arc-shaped end wall 1232, which is coaxially and has the same diameter as the air outlet connecting hole 1212. By providing an arc-shaped end wall 1232 that is coaxially and has the same diameter as the air outlet connecting hole 1212, it is beneficial to guide the airflow from the air outlet connecting hole 1212 to flow smoothly into the air outlet channel 1231, reduce flow resistance, and thus improve exhaust smoothness.

[0074] The air outlet channel 1231 has two main channel walls 1233 arranged opposite to each other. The two ends of the arc-shaped end wall 1232 are connected to the two main channel walls 1233 through inclined channel walls 1234 respectively. The distance between the two inclined channel walls 1234 gradually increases in the direction towards the air outlet 1235. This arrangement, through the setting of the inclined channel walls 1234, guides the air entering through the air outlet connecting hole 1212 to flow smoothly into the air outlet channel 1231, further improving the smoothness of air outlet.

[0075] The inclined channel wall 1234 is smoothly connected to the main channel wall 1233 and the arc-shaped end wall 1232. Specifically, the inclined channel wall 1234 and the arc-shaped end wall 1232 are tangentially arranged, and the inclined channel wall 1234 and the main channel wall 1233 are connected by an arc transition. The included angle between the inclined channel wall 1234 and the main channel wall 1233 is preferably 150°~175° to avoid the problem that the included angle is too small, resulting in an excessively large gap between the two main channel walls 1233, which would cause the size of the air outlet 123 to be too large.

[0076] In this embodiment, the air detection module 1 further includes a sealing element 14, which is sandwiched between the mounting housing 12 and the air detection module 11 and is at least partially located between the detection inlet 111 and the detection outlet 112. The sealing element 14 can separate the air intake airflow of the detection inlet 111 from the air exhaust airflow of the detection outlet 112, thereby preventing the exhaust airflow from the detection outlet 112 from flowing back to the detection inlet 111 and causing a decrease in detection accuracy. This is more conducive to ensuring the detection reliability of the air detection module 1 and improving the detection sensitivity of the air detection module 1.

[0077] In this embodiment, the seal 14 adopts a gasket structure. The seal 14 has a first arc-shaped edge and a second arc-shaped edge with openings facing away from each other. The first arc-shaped edge surrounds the air inlet communication hole 1211, and the second arc-shaped edge surrounds the air outlet communication hole 1212. The portion located between the first and second arc-shaped edges is situated between the detection inlet 111 and the detection outlet 112, separating the detection inlet 111 and the detection outlet 112. This structure of the seal 14 is easy to assemble and can effectively ensure airflow separation. In other embodiments, the seal 14 includes two sealing rings, one of which surrounds the air inlet communication hole 1211, and the other sealing ring surrounds the air outlet communication hole 1212.

[0078] To improve the ease of installation of the seal 14, a sealing groove is provided at the bottom of the mounting cavity. The shape of the sealing groove is adapted to the shape of the seal 14. The seal 14 is placed in the sealing groove to achieve the installation and positioning of the seal 14.

[0079] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0080] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fume extraction device, comprising a body having a fume inlet and a panel (2), wherein the panel (2) is movably installed at the fume inlet, characterized in that, The fume extraction device also includes an air detection module (1), which has an air inlet (1222) and an air outlet (1235). The air detection module (1) is installed on the back side of the panel (2), and the air inlet (1222) is exposed on the front side of the panel (2). The air detection module (1) is fixed relative to the panel (2) so that the position of the air inlet (1222) changes with the movement of the panel (2).

2. The fume extraction device according to claim 1, characterized in that, The air detection module (1) is provided with an air intake part (122) having an air intake channel (1221) on the side facing the panel (2). The front end of the air intake channel (1221) forms the air intake port (1222). The panel (2) has a mounting hole, and the air intake part (122) is inserted into the mounting hole.

3. The fume extraction device according to claim 2, characterized in that, An air intake filter (15) is provided at the air intake (1222), and the air intake filter (15) is flush with the front side of the panel (2); And / or, the air intake (122) is cylindrical, and the air intake channel (1221) is a cylindrical channel.

4. The fume extraction device according to claim 1, characterized in that, The fume extraction device also includes a controller and a drive mechanism. The drive mechanism drives the panel (2) to move. The drive mechanism and the air detection module (1) are both connected to the controller. The controller can control the operation of the drive mechanism according to the detection result of the air detection module (1) to control the opening angle and / or flipping speed of the panel (2).

5. The fume extraction device according to any one of claims 1-4, characterized in that, The air outlet (1235) and the air inlet (1222) are located on the same side of the air detection module (1). The panel (2) has a ventilation hole, and the air outlet (1235) is connected to the front space of the panel (2) through the ventilation hole.

6. The fume extraction device according to any one of claims 1-4, characterized in that, The air outlet (1235) is located on the back side of the panel (2); And / or, the air detection module (1) includes a mounting shell (12) and an air detection module (11) disposed in the mounting shell (12). The air detection module (11) has a detection inlet (111) and a detection outlet (112). The mounting shell (12) is provided with an air inlet (1222) and an air outlet (1235). The air inlet (1222) is connected to the detection inlet (111), and the air outlet (1235) is connected to the detection outlet (112).

7. The fume extraction device according to claim 6, characterized in that, The detection inlet (111) and the detection outlet (112) are located on the same side of the air detection module (11). The mounting shell (12) has an air outlet (123) protruding from the side facing the panel (2). The air outlet (123) has an air outlet channel (1231). The first end of the air outlet channel (1231) is directly connected to the detection outlet (112) and the second end forms the air outlet (1235). The extension direction of the air outlet (123) is parallel to the panel (2).

8. The fume extraction device according to claim 7, characterized in that, The air outlet channel (1231) extends downward from the first end to the second end; And / or, the side of the vent (123) facing the panel (2) is a plane, and the plane is in contact with the panel (2).

9. The fume extraction device according to any one of claims 1-4, characterized in that, The fume extraction device also includes a rear cover (5) and a mounting plate (3) disposed on the back side of the panel (2). The mounting plate (3) is partially raised in a direction away from the panel (2) to form a mounting boss (32). The mounting boss (32) and the panel (2) enclose an installation space. The mounting boss (32) has an installation opening that communicates with the installation space. The air detection module (1) is installed in the installation space through the installation opening. The rear cover (5) is detachably installed at the installation opening and seals the installation opening.

10. The fume extraction device according to claim 9, characterized in that, The front side of the air detection module (1) is attached to the back side of the panel (2), and the rear side of the air detection module (1) abuts against the back cover (5). And / or, the mounting boss (32) is provided with a positioning socket (3241), and the lower side of the air detection module (1) is inserted into the positioning socket (3241).

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