Air detection structure and oil fume extraction equipment

Abstract

The utility model belongs to the electric appliance technical field, specifically discloses an air detection structure and oil fume extraction equipment. Air detection structure includes mounting plate, installation shell, air detection module. The air inlet through -hole and air outlet through -hole of being separated are set up on the mounting plate, and the installation shell is installed in one side of mounting plate and is surrounded with mounting plate and is formed with installation cavity, air detection module is installed in the installation cavity, and the first side of air detection module has detection entrance and detection outlet, the first side is pasted with mounting plate, and the air inlet through -hole is communicated with detection entrance directly opposite, and the air outlet through -hole is communicated with detection outlet directly opposite. The utility model can shorten the air inlet path of air detection module, and improve the detection sensitivity and detection reliability of air detection module.

Description

Technical Field

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

[0002] As people's demands for quality of life increase, range hoods that can extract kitchen fumes are being used more and more widely in homes to keep the kitchen clean and improve the user's cooking experience.

[0003] The prior art provides a range hood, which includes a body and an air detection box mounted on the body. The air detection box includes a box body, a cover, and a gas detection sensor. The box body and the cover are detachably connected and form an installation cavity. The gas detection sensor is disposed in the installation cavity and has a detection inlet for air inflow and a detection outlet for air outflow. The cover has a vent communicating with the detection inlet. The body has an air inlet hole. The box body is installed on the inside of the body with the installation opening facing the detection inlet. A mounting base is provided on the outside of the body, and a mesh plate is mounted on the mounting base, covering the installation opening.

[0004] In existing range hoods, the gas detection sensor is installed within the mounting cavity formed by the housing and cover. During gas detection, air flows sequentially through the air inlet, vent, and detection inlet to enter the gas detection sensor. This results in a longer airflow path for the sensor, potentially leading to a slow response and affecting detection accuracy. Furthermore, the exhaust vent on the housing connects to the detection outlet, causing the exhaust gas to pass through the internal cavity before exiting the machine. This is not conducive to exhaust and installation of the gas detection device on the machine body. Utility Model Content

[0005] The purpose of this invention is to provide an air detection structure and a fume extraction device, which can shorten the air intake path of the air detection module and improve the detection sensitivity and reliability of the air detection module.

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

[0007] An air detection structure, comprising:

[0008] Mounting plate, wherein the mounting plate is provided with separate air inlet and air outlet holes;

[0009] The mounting shell is installed on one side of the mounting plate and surrounds the mounting plate to form a mounting cavity;

[0010] An air detection module is installed in the mounting cavity, and the first side of the air detection module has a detection inlet and a detection outlet. The first side is attached to the mounting plate, and the air inlet is directly connected to the detection inlet, and the air outlet is directly connected to the detection outlet.

[0011] As an optional technical solution for an air detection structure, the mounting plate is recessed along the direction toward the mounting shell to form an air inlet recess and an air outlet recess, the air inlet recess and the air outlet recess are spaced apart, the bottom of the air inlet recess is provided with an air inlet hole, the bottom of the air outlet recess is provided with an air outlet hole, and the bottom of the air inlet recess and the bottom of the air outlet recess are both in contact with the first side.

[0012] As an optional technical solution for an air detection structure, the air detection structure further includes an air inlet cover and an air outlet cover. The air inlet cover is located in the cavity of the air inlet recess and has an air inlet communication hole that communicates with the air inlet through hole. The air outlet cover is located in the cavity of the air outlet recess and has an air outlet communication hole that communicates with the air outlet through hole.

[0013] As an optional technical solution for an air detection structure, the air detection structure further includes an air intake filter, which is inserted into the air intake communication hole;

[0014] And / or, the air detection structure further includes an exhaust filter screen, which is inserted into the exhaust communication hole.

[0015] As an optional technical solution for an air detection structure, the air intake filter includes an air intake mesh plate and an air intake ring wall surrounding the periphery of the air intake mesh plate. The air intake ring wall is sequentially inserted into the air intake connecting hole and the air intake through hole and abuts against the first side. The air intake mesh plate is directly opposite to the detection inlet and is spaced apart. The air intake mesh plate has the air intake mesh holes.

[0016] And / or, the exhaust filter screen includes an exhaust screen plate portion and an exhaust ring wall portion surrounding the periphery of the exhaust screen plate portion. The exhaust ring wall portion is sequentially inserted into the exhaust communication hole and the exhaust through hole and abuts against the first side. The exhaust screen plate portion is directly opposite to the detection inlet and is spaced apart. The exhaust screen plate portion has the exhaust mesh hole.

[0017] As an optional technical solution for an air detection structure, the air detection structure further includes an air intake sealing ring, which is pressed between the wall of the air intake through hole and the wall of the air intake ring and abuts against the first side;

[0018] And / or, the air detection structure further includes an exhaust sealing ring, which is pressed between the wall of the exhaust orifice and the wall of the exhaust ring and abuts against the first side.

[0019] As an optional technical solution for an air detection structure, both the air inlet cover and the air outlet cover are detachably connected to the mounting plate;

[0020] And / or, the side of the air intake cover away from the mounting housing is flush with the surface of the mounting plate;

[0021] And / or, the side of the vent cover away from the mounting housing is flush with the surface of the mounting plate.

[0022] As an optional technical solution for an air detection structure, both the air intake cover and one end of the air intake cover have outwardly extending fixing ear plates. The mounting plate has a fixing recess along the direction toward the mounting shell. The recessed space of the fixing recess forms a fixing groove. The fixing recess and the fixing ear plates are arranged one-to-one. The fixing ear plates are accommodated in the fixing groove and connected to the bottom of the fixing groove.

[0023] And / or, the side of the air intake cover away from the mounting housing is flush with the surface of the mounting plate;

[0024] And / or, the side of the vent cover away from the mounting housing is flush with the surface of the mounting plate.

[0025] As an optional technical solution for an air detection structure, a positioning notch is provided on the side wall of the mounting shell, and the positioning notch is provided in a one-to-one correspondence with the fixing recess, and the fixing recess is inserted into the corresponding positioning notch;

[0026] And / or, the air inlet recess and the air outlet recess are arranged side by side along the first direction, and the fixed recess is provided on the same side of the air inlet recess and the air outlet recess along the second direction;

[0027] And / or, the stamping depth of the fixed recess is less than the stamping depth of the air inlet recess and the air outlet recess.

[0028] As an optional technical solution for an air detection structure, the depth of the air inlet recess is less than the depth of the air outlet recess.

[0029] As an optional technical solution for an air detection structure, the mounting plate is connected to a fixed bracket on its back side, and the mounting shell has a fixing part protruding outward from at least two opposite side walls. The fixing part and the fixed bracket are respectively arranged in a one-to-one correspondence, and the fixing part and the fixed bracket are detachably connected.

[0030] As an optional technical solution for an air detection structure, the fixed bracket includes a first plate, a connecting plate, and a second plate connected vertically in sequence. The first plate is connected to the mounting plate, and the second plate is fitted with the fixed part. A protruding column is provided on the side of the second plate away from the fixed part. The fixed bracket has a fixing through hole that passes through the protruding column and the second plate. The fixed part has a connecting hole that communicates with the fixing through hole. The fixed bracket and the fixed part are connected by fasteners that pass through the connecting hole and the fixing through hole.

[0031] And / or, the fixing bracket is bonded to the mounting plate;

[0032] And / or, a wire outlet notch is provided on one side of the mounting housing, the connecting wire of the air detection module passes through the wire outlet notch, and the mounting housing is provided with the fixing part on both sides of the wire outlet notch.

[0033] An oil fume extraction device includes a fume hood and an air detection structure as described above. The mounting plate forms an outer plate structure of the fume hood, and the mounting shell is located inside the fume hood. Alternatively, the fume hood has an installation opening, the mounting plate covers the installation opening and is flush with the surface of the corresponding part of the fume hood, and the mounting shell is located inside the fume hood.

[0034] The beneficial effects of this utility model are as follows:

[0035] The air detection structure provided by this utility model, by directly installing the air detection module on the back side of the mounting plate, allows external air to directly enter the detection inlet through the air inlet hole. This enables the mounting plate and mounting shell to work together to protect the air detection module while shortening the air intake path of the air detection module, thereby improving the response speed of the air detection module and thus improving the detection sensitivity and reliability. At the same time, by setting both the detection inlet and the detection outlet on the first side, and by setting separate air inlet and outlet holes on the mounting plate, the gas inside the air detection module can be directly discharged to the outside of the machine through the detection outlet and the air outlet hole, effectively improving the exhaust smoothness of the air detection module and improving the installation convenience of the air detection module.

[0036] The fume extraction device provided by this utility model, because the mounting plate of the air detection structure forms an outer plate structure of the fume hood or the mounting plate is directly covered on the mounting port of the fume hood, can effectively shorten the air intake path of the air detection module 2, improve the detection sensitivity and reliability of the air detection module, thereby improving the reliability of the fume extraction device and enhancing the user experience of the fume extraction device. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the air detection structure provided in this embodiment of the utility model;

[0038] Figure 2 This is a schematic diagram of the disassembled structure of the air detection structure provided in this embodiment of the utility model;

[0039] Figure 3 This is a schematic diagram of the structure of the mounting plate provided in this embodiment of the utility model;

[0040] Figure 4 This is a schematic diagram of the air detection structure provided in this embodiment of the present invention after removing the air inlet cover and the air outlet cover;

[0041] Figure 5 This is a schematic diagram of the structure of the air intake filter and the air outlet filter provided in this embodiment of the utility model;

[0042] Figure 6 This is a partial structural schematic diagram of the air detection structure provided in this embodiment of the utility model;

[0043] Figure 7 yes Figure 6 A magnified view of a section at point I;

[0044] Figure 8 This is a schematic diagram of the rear structure of the air detection structure provided in this embodiment of the utility model;

[0045] Figure 9 yes Figure 8 A magnified view of a section at point J;

[0046] Figure 10 This is a schematic diagram of the mounting shell provided in an embodiment of the present utility model;

[0047] Figure 11 This is a schematic diagram of the structure of the fixed bracket provided in an embodiment of the present utility model;

[0048] Figure 12 This is a partial schematic diagram of an air detection structure provided in another embodiment of the present invention.

[0049] The markings in the image are as follows:

[0050] 1. Mounting plate; 11. Inlet recess; 111. Inlet through hole; 112. Inlet groove; 12. Outlet recess; 121. Outlet through hole; 122. Outlet groove; 13. Fixing recess; 131. Fixing groove; 132. Second fixing hole; 14. Fixing column;

[0051] 2. Air detection module; 21. First side; 22. Detection inlet; 23. Detection outlet; 24. Mounting ear plate;

[0052] 3. Mounting shell; 31. Main shell section; 311. Positioning notch; 32. Fixing section; 33. Mounting column section;

[0053] 4. Intake cover; 41. Intake connecting hole; 5. Exhaust cover; 51. Exhaust connecting hole; 6. Fixing ear plate;

[0054] 7. Intake filter; 71. Intake grille; 72. Intake ring wall;

[0055] 8. Exhaust filter screen; 81. Exhaust mesh plate section; 82. Exhaust ring wall section;

[0056] 9. Fixed bracket; 91. First plate; 92. Second plate; 93. Connecting plate; 94. Protruding column;

[0057] 10. Inlet sealing ring; 20. Outlet sealing ring; 30. Connecting wire; Detailed Implementation

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] This utility model provides an oil fume extraction device that includes an air detection structure. The air detection structure can detect environmental quality, thereby facilitating the control of the oil fume extraction device's operation and improving its operational reliability.

[0063] like Figure 1 and Figure 2 As shown, in this embodiment, the air detection structure includes a mounting shell 3, a mounting plate 1, and an air detection module 2. The mounting plate 1 has a separated air inlet hole 111 and an air outlet hole 121. The mounting shell 3 is mounted on one side of the mounting plate 1 and forms a mounting cavity with the mounting plate 1. The air detection module 2 is installed inside the mounting cavity. The first side 21 of the air detection module 2 has a detection inlet 22 and a detection outlet 23. The first side 21 is attached to the mounting plate 1. The air inlet hole 111 communicates directly with the detection inlet 22, and the air outlet hole 121 communicates directly with the detection outlet 23. An air inlet filter 7 is located at the air inlet hole 111 and has air inlet mesh holes, and an air outlet filter 8 is located at the air outlet hole 121 and has air outlet mesh holes.

[0064] The fume extraction device includes a fume hood, wherein the mounting plate 1 forms an outer plate structure of the fume hood, and the mounting shell 3 is located inside the fume hood; or, the fume hood has an installation opening, the mounting plate 1 covers the installation opening and is flush with the surface of the corresponding part of the fume hood, and the mounting shell 3 is located inside the fume hood.

[0065] The air detection structure provided in this embodiment, by directly installing the air detection module 2 on the back side of the mounting plate 1, allows external air to directly enter the detection inlet 22 through the air inlet hole 111. This enables the mounting plate 1 and the mounting shell 3 to cooperate in protecting the air detection module 2 while shortening the air intake path of the air detection module 2, thereby improving the response speed of the air detection module 2 and thus improving the detection sensitivity and reliability of the air detection module 2. At the same time, the detection inlet 22 and the detection outlet 23 are both located on the first side 21, and the mounting plate 1 is provided with separate air inlet holes 111 and air outlet holes 121, so that the gas in the air detection module 2 can be directly discharged to the outside of the machine through the detection outlet 23 and the air outlet holes 121, effectively improving the exhaust smoothness of the air detection module 2 and improving the installation convenience of the air detection module 2.

[0066] The fume extraction device provided in this embodiment, because the mounting plate 1 of the air detection structure forms an outer plate structure of the fume hood or the mounting plate 1 is directly covered on the mounting port of the fume hood, can effectively shorten the air intake path of the air detection module 2, improve the detection sensitivity and reliability of the air detection module 2, thereby improving the reliability of the fume extraction device and enhancing the user experience of the fume extraction device.

[0067] like Figures 1 to 3 As shown, in this embodiment, in order to reduce the interference between the air intake and exhaust airflow of the air detection module 2, the mounting plate 1 is recessed in the direction toward the mounting shell 3 to form an air intake recess 11 and an air exhaust recess 12. The air intake recess 11 and the air exhaust recess 12 are spaced apart. An air intake through hole 111 is provided at the bottom of the air intake recess 11, and an air exhaust through hole 121 is provided at the bottom of the air exhaust recess 12. The bottoms of the air intake recess 11 and the air exhaust recess 12 are both in contact with the first side 21.

[0068] By providing a separate air inlet recess 11 and an air outlet recess 12 on the mounting plate 1, the structure between the air inlet recess 11 and the air outlet recess 12 on the mounting plate 1 forms a separation structure. The separation structure can block the airflow from the air outlet 121 from flowing to the air inlet 111, thereby effectively avoiding interference between the air inlet airflow and the air outlet airflow of the air detection module 2, and thus ensuring the air inlet reliability of the air detection module 2.

[0069] To improve the layout rationality of the air detection structure, in this embodiment, the air inlet recess 11 and the air outlet recess 12 are arranged side by side along the first direction. Furthermore, the recess depth of the air inlet recess 11 and the air outlet recess 12 is 0.5mm to 3mm, to avoid the problem that the recess depth is too small, making it difficult to achieve the function of airflow separation, and also to avoid the problem that the recess depth is too large, causing difficulties in processing the mounting plate 1 and increasing the footprint of the air detection structure.

[0070] In this embodiment, the recess depth of the air intake recess 11 and the recess depth of the air outlet recess 12 are the same, thereby making the outer bottom surface of the air intake recess 11 and the outer bottom surface of the air outlet recess 12 flush. This allows the surface of the first side 21 of the air detection module 2 to be flush, so that the first side 21 is in contact with the outer bottom surfaces of both the air intake recess 11 and the air outlet recess 12.

[0071] In other embodiments, such as Figure 12As shown, the depth of the inlet recess 11 is less than the depth of the outlet recess 12. This shortens the intake path of the airflow of the air detection module 2 while increasing the length of the outlet channel of the detection outlet 23. This avoids the problem of the airflow flowing towards the intake mesh when the outlet airflow is large, improves exhaust smoothness, and reduces the impact of the outlet airflow of the air detection module 2 on the intake airflow of the air detection module 2.

[0072] In this embodiment, as Figure 2 and Figure 3 As shown, both the air inlet 111 and the air outlet 121 are circular holes, ensuring that the ventilation area of ​​the air inlet 111 effectively covers the detection inlet 22, and the ventilation area of ​​the air outlet 121 effectively covers the detection outlet 23, thus guaranteeing smooth air intake and exhaust. Furthermore, the ventilation area of ​​the air inlet 111 is smaller than that of the air outlet 121, allowing the exhaust velocity to be greater than the intake velocity. This ensures smooth airflow within the air detection module 2, preventing airflow accumulation inside the module and thus avoiding impact on detection results, guaranteeing detection accuracy, and improving detection sensitivity.

[0073] like Figures 1 to 3 As shown, in order to improve the overall aesthetic appearance of the air detection structure, in this embodiment, the air detection module 2 further includes an air inlet cover plate 4 and an air outlet cover plate 5. The air inlet cover plate 4 is located in the cavity of the air inlet recess 11 and has an air inlet communication hole 41 that is directly opposite to and communicates with the air inlet through hole 111. The air outlet cover plate 5 is located in the cavity of the air outlet recess 12 and has an air outlet communication hole 51 that communicates with the air outlet through hole 121. By setting the air inlet cover 4 and the air outlet cover 5, the air inlet cover 4 can cover the cavity of the air inlet recess 11, and the air outlet cover 5 can cover the cavity of the air outlet recess 12, thereby making the surface of the air detection structure smoother, improving the overall flatness and aesthetics of the air detection structure, thus improving the appearance of the fume extraction equipment and facilitating cleaning operations. At the same time, by setting the air inlet cover 4 and the air outlet cover 5, the blocking and separation effect between the air inlet and outlet airflows can also be enhanced, further improving the detection sensitivity and reliability of the air detection module 2.

[0074] For ease of description, the cavity of the air intake recess 11 is referred to as the air intake groove 112, and the cavity of the air outlet recess 12 is referred to as the air outlet groove 122. The shape of the air intake cover plate 4 is adapted to the shape of the air intake groove 112, and the shape of the air outlet cover plate 5 is adapted to the shape of the air outlet groove 122, so as to ensure the covering effect of the air intake cover plate 4 on the air intake groove 112 and the covering effect of the air outlet cover plate 5 on the air outlet groove 122. The side of the air intake cover plate 4 and the air outlet cover plate 5 away from the mounting shell 3 is flush with the surface of the mounting plate 1 away from the mounting shell 3, so that the overall appearance of the air detection structure is relatively flat and aesthetically pleasing, and it is also convenient to clean the surface of the air detection structure.

[0075] In this embodiment, both the air intake cover 4 and the air exhaust cover 5 are detachably connected to the mounting plate 1, which helps to reduce the processing difficulty of the mounting plate 1, the air intake cover 4, and the air exhaust cover 5. In other embodiments, the air intake cover 4 and the air exhaust cover 5 can be integrally formed with the mounting plate 1.

[0076] Furthermore, the air intake cover 4 includes an air intake plate portion and an air intake flange portion disposed along the periphery of the air intake plate portion. The air intake flange portion abuts against the bottom of the air intake groove 112, and the air intake plate portion is opposite to and spaced apart from the bottom of the air intake groove 112. An air intake communication hole 41 is provided on the air intake plate portion, and the outer surface of the air intake plate portion is flush with the surface of the mounting plate 1. The air outlet cover 5 includes an air outlet plate portion and an air outlet flange portion disposed along the periphery of the air outlet plate portion. The air outlet flange portion abuts against the bottom of the air outlet groove 122, and the air outlet plate portion is opposite to and spaced apart from the bottom of the air outlet groove 122. An air outlet communication hole 51 is provided on the air outlet plate portion, and the outer surface of the air outlet plate portion is flush with the outer surface of the mounting plate 1. This design ensures the depth of the air intake recess 11 and the air outlet recess 12 while avoiding excessive material thickness of the air intake cover 4 and the air outlet cover 5, thus reducing the weight of the air intake cover 4 and the air outlet cover 5 and consequently reducing the overall weight of the air detection structure. It also facilitates the processing of the air intake cover 4 and the air outlet cover 5.

[0077] In this embodiment, the air detection structure further includes an intake filter 7 and / or the intake filter 7 is inserted into the intake communication hole 41, and the exhaust filter 8 is inserted into the exhaust communication hole 121. By providing the intake filter 7 and the exhaust filter 8, the detection inlet 22 and the detection outlet 23 can be protected, preventing external dust or other impurities from entering the detection inlet 22 or the detection outlet 23 and causing blockage of the air flow path of the air detection module 2, thereby improving the reliability and long-term performance of the air detection structure.

[0078] like Figures 2 to 6As shown, the air intake filter 7 includes an air intake mesh plate portion 71 and an air intake ring wall portion 72 surrounding the periphery of the air intake mesh plate portion 71. The air intake mesh plate portion 71 is provided with air intake mesh holes. The end of the air intake ring wall portion 72 abuts against the first side 21 of the air detection module 2 and is inserted into the air intake through hole 111. This arrangement allows the airflow entering from the air intake mesh holes to flow towards the detection inlet 22 through the abutment of the air intake ring wall portion 72 against the first side 21. At the same time, the insertion of the air intake ring wall portion 72 into the air intake through hole 111 facilitates the installation of the air intake filter 7.

[0079] The exhaust filter 8 includes an exhaust mesh plate portion 81 and an exhaust ring wall portion 82 surrounding the periphery of the exhaust mesh plate portion 81. The exhaust mesh plate portion 81 has exhaust mesh holes, and the end of the exhaust ring wall portion 82 abuts against the first side 21 of the air detection module 2 and is inserted into the exhaust through hole 121. This arrangement can guide the airflow from the detection outlet 23 to flow towards the exhaust mesh holes, reducing the probability of the airflow from the detection outlet 23 flowing into the detection inlet 22 and improving detection reliability. At the same time, this structure of the exhaust filter 8 can improve the ease of installation.

[0080] In other embodiments, the intake filter 7 is a mesh structure, and the intake filter 7 is disposed over the intake communication hole 41 or sandwiched between the intake cover plate 4 and the intake recess 11 and covering the intake through hole 111; and / or, the exhaust filter 8 is a mesh structure, and the exhaust filter 8 is disposed over the exhaust communication hole 51 or sandwiched between the exhaust cover plate 5 and the exhaust recess 12 and covering the exhaust through hole 121.

[0081] Furthermore, the intake ring wall portion 72 is inserted into the intake connecting hole 41, and the intake mesh portion 71 is flush with the outer surface of the intake cover plate 4; and / or, the exhaust ring wall portion 82 is inserted into the exhaust connecting hole 51, and the exhaust mesh portion 81 is flush with the outer surface of the exhaust cover plate 5. This effectively improves the flatness of the outer surface of the air detection structure, enhancing its structural aesthetics and ease of cleaning.

[0082] In this embodiment, the intake ring wall portion 72 and the exhaust ring wall portion 82 are welded to the first side 21 of the air detection module 2 to ensure the reliable connection between the intake filter 7 and the exhaust filter 8. In other embodiments, the intake ring wall portion 72 may be welded to the intake cover plate 4, and the exhaust ring wall portion 82 may be welded to the exhaust cover plate 5.

[0083] like Figure 2 , Figure 4 and Figure 7As shown, the air detection structure also includes an intake sealing ring 10 and / or an exhaust sealing ring 20. The intake sealing ring 10 is interference-fitted onto the intake ring wall 72 and pressed between the intake ring wall 72 and the wall of the intake through hole 111. The end of the intake sealing ring 10 abuts against the first side 21. The exhaust sealing ring 20 is interference-fitted onto the exhaust ring wall 82 and pressed between the exhaust ring wall 82 and the wall of the exhaust through hole 121. The end of the exhaust sealing ring 20 abuts against the first side 21.

[0084] By setting the inlet sealing ring 10, airflow can be prevented from entering the detection inlet 22 from the side of the inlet sealing ring 10, thereby reducing the probability of airflow flowing from the detection outlet 23 flowing into the detection inlet 22 and improving detection reliability. By setting the outlet sealing ring 20, airflow flowing from the detection outlet 23 can be prevented from flowing out along the side of the outlet sealing ring 20, thereby reducing the probability of airflow flowing from the detection outlet 23 flowing into the detection inlet 22. This better achieves the separation of the inlet and outlet airflow of the air detection module 2 and improves the detection reliability and detection sensitivity of the air detection module 2.

[0085] In this embodiment, the air detection structure is provided with both an inlet sealing ring 10 and an outlet sealing ring 20 to improve the air intake and outlet sealing performance. In other embodiments, only the inlet sealing ring 10 or only the outlet sealing ring 20 may be provided.

[0086] like Figures 1 to 3 As shown, to improve the ease of installation of the air intake cover 4 and the air exhaust cover 5, a fixing ear plate 6 is provided on one side of both the air intake cover 4 and the air exhaust cover 5. The mounting plate 1 has a fixing recess 13 recessed in the direction towards the mounting shell 3. The recessed space of the fixing recess 13 forms a fixing groove 131. The fixing recess 13 and the fixing ear plate 6 are provided one-to-one. The fixing ear plate 6 is accommodated in the fixing groove 131 and is detachably connected to the bottom of the groove 131. Thus, the fixing ear plate 6 can be fastened at the fixing recess 13 to achieve the fastening of the corresponding air intake cover 4 and air exhaust cover 5 on the mounting plate 1, thereby improving the ease of installation and the stability of installation of the air intake cover 4 and air exhaust cover 5 on the mounting plate 1.

[0087] Furthermore, the air intake cover 4 and the air outlet cover 5 are provided with fixing lugs 6 on one side in the second direction, that is, the air intake recess 11 and the air outlet recess 12 are provided with fixing recesses 13 on one side in the second direction, and the two fixing recesses 13 are located on the same side to improve the structural aesthetics. In other embodiments, the fixing recesses 13 corresponding to the air intake recess 11 and the air outlet recess 12 can be respectively provided on opposite sides.

[0088] In this embodiment, the fixing ear plate 6 extends outward from the corresponding air inlet plate and air outlet plate. The recess depth of the fixing recess 13 is less than the recess depth of the air inlet recess 11 and the air outlet recess 12, so that the fixing ear plate 6 abuts against the bottom of the fixing groove 131, thereby improving the connection convenience between the fixing ear plate 6 and the fixing recess 13.

[0089] Specifically, the fixing ear plate 6 has a first fixing hole, and the bottom of the fixing recess 13 has a second fixing hole 132. The first fixing hole and the second fixing hole 132 are directly opposite and connected. The fixing recess 13 and the fixing ear plate 6 are fastened by fastening connectors passing through the first fixing hole and the second fixing hole 132. In other embodiments, the fixing ear plate 6 and the bottom of the fixing recess 131 can also be connected by other detachable connection methods such as snap-fit ​​or magnetic connection.

[0090] In other embodiments, the recess depth of the fixing recess 13 can be the same as the recess depth of the air inlet recess 11 and the air outlet recess 12. The fixing ear plate 6 has a boss protruding from the side facing the mounting shell 3. The boss abuts against the bottom of the fixing groove 131. The fixing recess 13 and the fixing ear plate 6 are connected by a fastening connector that passes through the boss and the bottom of the fixing groove 131.

[0091] like Figure 4 , Figure 8 and Figure 9 As shown, to further improve the connection reliability of the fixing recess 13 and the fixing ear plate 6, a fixing post 14 is provided on the side of the fixing recess 13 facing the mounting shell 3. The second fixing hole 132 is provided through the fixing post 14. By providing the fixing post 14, the depth of the second fixing hole 132 can be increased, thereby increasing the mating length between the mounting plate 1 and the fastening connector, thereby improving the installation stability and reliability of the air intake cover 4 and the air exhaust cover 5 on the mounting plate 1.

[0092] like Figures 8 to 10 As shown, in this embodiment, the mounting shell 3 includes a main shell portion 31, which has a mounting groove facing the open mounting plate 1. A positioning notch 311 is provided on one side wall of the main shell portion 31. The positioning notch 311 and the fixing recess 13 are provided in a one-to-one correspondence. The fixing recess 13 is inserted into the positioning notch 311. Thus, the mounting shell 3 can be positioned on the mounting plate 1 by the cooperation of the positioning notch 311 and the fixing recess 13. This facilitates the alignment of the detection inlet 22 with the air inlet hole 111 and the detection outlet 23 with the air outlet hole 121, thereby improving the assembly efficiency and assembly accuracy of the air detection structure.

[0093] To improve the ease of connection between the mounting housing 3 and the mounting plate 1, a fixing bracket 9 is connected to the back side of the mounting plate 1. At least two opposite side walls of the mounting housing 3 have protruding fixing parts 32, which correspond one-to-one with the fixing brackets 9 and are detachably connected. By providing the fixing brackets 9, the position and shape of the fixing brackets 9 can better match the position of the fixing parts 32, improving the ease of connection between the mounting housing 3 and the mounting plate 1, reducing the number of openings on the mounting plate 1, and enhancing the overall aesthetic appearance of the air detection structure. Specifically, fixing parts 32 are provided on opposite sides of the main housing 31.

[0094] In this embodiment, the mounting shell 3 is provided with fixing portions 32 on opposite sides along the first direction, which facilitates the misalignment of the fixing bracket 9 and the fixing recess 13 and avoids interference between them. Simultaneously, this arrangement allows the mounting shell 3 to be fixed to the mounting plate 1 on opposite sides along the first direction, while one of the opposite sides of the mounting shell 3 along the second direction is positioned by the cooperation of the positioning notch 311 and the fixing recess 13, effectively improving the installation stability of the mounting shell 3 on the mounting plate 1.

[0095] like Figure 9 and Figure 11 As shown, in this embodiment, the fixing bracket 9 is bonded to the mounting plate 1, thereby avoiding the need to open holes in the mounting plate 1 for mounting the fixing bracket 9, reducing the processing difficulty of the mounting plate 1, and improving the appearance of the air detection structure.

[0096] The fixing part 32 includes a first plate part 91, a connecting plate part 93, and a second plate part 92 connected vertically in sequence. The first plate part 91 is attached to and connected to the mounting plate 1, and the second plate part 92 is attached to and connected to the fixing part 32. Specifically, the second plate part 92 has a fixing through hole, and the fixing part 32 has a connecting hole. The fixing part 32 and the fixing bracket 9 are connected by fasteners passing through the fixing through hole and the connecting hole, thereby ensuring the stability and reliability of the connection between the fixing part 32 and the fixing bracket 9. In other embodiments, the fixing bracket 9 and the fixing part 32 can also be connected by snap-fit ​​or other detachable connection methods.

[0097] The first plate 91 is bonded to the mounting plate 1. Specifically, the first plate 91 has multiple overflow holes. The side of the first plate 91 opposite to the second plate 92 is coated with adhesive. The first plate 91 and the mounting plate 1 are bonded together by adhesive. The overflow holes allow excess adhesive to overflow through the overflow holes, thus ensuring the smoothness of the bond between the first plate 91 and the mounting plate 1.

[0098] To improve the connection stability between the fixing part 32 and the fixing bracket 9, a protruding post 94 is provided on the side of the second plate part 92 facing the first plate part 91. A fixing through hole is provided through the protruding post 94 to increase the length of the fixing through hole, thereby increasing the mating length between the fastener and the fixing bracket 9, and thus improving the installation stability of the fixing bracket 9 and the fixing part 32. Furthermore, the fixing through hole is a threaded hole, and the fastener is a fastening screw.

[0099] A cable outlet notch is provided on one side of the mounting housing 3, and a connecting wire 30 is connected to one side of the air detection module 2. The connecting wire 30 passes through the cable outlet notch. Fixing parts 32 are provided on both sides of the cable outlet notch of the mounting housing 3. This allows the fixing parts 32 to avoid the connecting wire 30, while ensuring that the portion of the connecting wire 30 at the mounting housing 3 is clamped between the side wall of the cable outlet notch and the mounting plate 1, thus ensuring the stability and reliability of the connecting wire 30.

[0100] like Figure 6 and Figure 10 As shown, in order to improve the installation stability and ease of installation of the air detection module 2 in the mounting shell 3, a mounting post 33 is provided protruding from the bottom of the mounting groove. A clearance notch is provided at the two opposite corners of the shell of the air detection module 2. A mounting ear plate 24 is provided protruding from the side wall of the clearance notch. The mounting ear plate 24 and the mounting post 33 are provided in a one-to-one correspondence, and the end face of the mounting ear plate 24 abuts against the end face of the mounting post 33. The mounting ear plate 24 and the mounting post 33 are connected by a mounting component passing through them.

[0101] It is worth noting that the air detection module 2 can be a PM2.5 sensor or other sensors that require air circulation for air quality detection. The air detection module 2 can adopt existing general-purpose modules, that is, the structure of the air detection module 2 can adopt existing structures, and the specific structure and detection principle of the air detection module 2 can be set with reference to existing technologies. This is not the focus of the improvement of this utility model, and this utility model does not impose specific limitations in this regard.

[0102] 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.

[0103] The specific embodiments described above are merely illustrative of several implementations of this invention, and while the descriptions are detailed, they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the original concept, and these all fall within the scope of this patent. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An air detection structure, characterized in that, include: Mounting plate (1), wherein the mounting plate (1) is provided with a separate air inlet hole (111) and an air outlet hole (121). The mounting shell (3) is installed on one side of the mounting plate (1) and forms a mounting cavity with the mounting plate (1); An air detection module (2) is installed in the mounting cavity, and the first side (21) of the air detection module (2) has a detection inlet (22) and a detection outlet (23). The first side (21) is attached to the mounting plate (1), and the air inlet (111) is directly connected to the detection inlet (22), and the air outlet (121) is directly connected to the detection outlet (23).

2. The air detection structure according to claim 1, characterized in that, The mounting plate (1) is recessed in the direction toward the mounting shell (3) to form an air inlet recess (11) and an air outlet recess (12). The air inlet recess (11) and the air outlet recess (12) are spaced apart. The bottom of the air inlet recess (11) is provided with an air inlet through hole (111), and the bottom of the air outlet recess (12) is provided with an air outlet through hole (121). The bottom of the air inlet recess (11) and the bottom of the air outlet recess (12) are both in contact with the first side (21).

3. The air detection structure according to claim 2, characterized in that, The air detection structure also includes an air inlet cover plate (4) and an air outlet cover plate (5). The air inlet cover plate (4) is located in the cavity of the air inlet recess (11) and has an air inlet communication hole (41) that communicates with the air inlet through hole (111). The air outlet cover plate (5) is located in the cavity of the air outlet recess (12) and has an air outlet communication hole (51) that communicates with the air outlet through hole (121).

4. The air detection structure according to claim 3, characterized in that, The air detection structure also includes an air intake filter (7), which is inserted into the air intake communication hole (41). And / or, the air detection structure further includes an exhaust filter (8) inserted into the exhaust communication hole (121).

5. The air detection structure according to claim 4, characterized in that, The air intake filter (7) includes an air intake mesh plate (71) and an air intake ring wall (72) surrounding the periphery of the air intake mesh plate (71). The air intake ring wall (72) is sequentially inserted into the air intake connecting hole (41) and the air intake through hole (111) and abuts against the first side (21). The air intake mesh plate (71) is directly opposite to the detection inlet (22) and is spaced apart. The air intake mesh plate (71) has the air intake mesh hole. And / or, the air outlet filter (8) includes an air outlet mesh plate (81) and an air outlet ring wall (82) surrounding the periphery of the air outlet mesh plate (81). The air outlet ring wall (82) is sequentially inserted into the air outlet connecting hole (51) and the air outlet through hole (121) and abuts against the first side (21). The air outlet mesh plate (81) is directly opposite to the detection inlet (22) and spaced apart. The air outlet mesh plate (81) has the air outlet mesh hole.

6. The air detection structure according to claim 5, characterized in that, The air detection structure also includes an air intake sealing ring (10), which is pressed between the wall of the air intake hole (111) and the wall portion (72) of the air intake ring and abuts against the first side (21); And / or, the air detection structure further includes an exhaust sealing ring (20), which is pressed between the wall of the exhaust through hole (121) and the wall portion of the exhaust ring (82) and abuts against the first side (21).

7. The air detection structure according to claim 3, characterized in that, The air inlet cover (4) and the air outlet cover (5) are both detachably connected to the mounting plate (1); And / or, the side of the air intake cover (4) away from the mounting shell (3) is flush with the surface of the mounting plate (1); And / or, the side of the vent cover (5) away from the mounting shell (3) is flush with the surface of the mounting plate (1).

8. The air detection structure according to claim 7, characterized in that, The air intake cover (4) and one end of the air intake cover (4) both extend outward with a fixing ear plate (6). The mounting plate (1) has a fixing recess (13) recessed in the direction toward the mounting shell (3). The recessed space of the fixing recess (13) forms a fixing groove (131). The fixing recess (13) and the fixing ear plate (6) are arranged in a one-to-one correspondence. The fixing ear plate (6) is accommodated in the fixing groove (131) and connected to the bottom of the fixing groove (131).

9. The air detection structure according to claim 8, characterized in that, The mounting shell (3) has a positioning notch (311) on its side wall. The positioning notch (311) and the fixing recess (13) are provided in a one-to-one correspondence. The fixing recess (13) is inserted into the corresponding positioning notch (311). And / or, the air inlet recess (11) and the air outlet recess (12) are arranged side by side along the first direction, and the fixed recess (13) is provided on the same side of the air inlet recess (11) and the air outlet recess (12) along the second direction. And / or, the stamping depth of the fixed recess (13) is less than the stamping depth of the air inlet recess (11) and the air outlet recess (12).

10. The air detection structure according to any one of claims 2-9, characterized in that, The depth of the inlet recess (12) is less than the depth of the outlet recess (13).

11. The air detection structure according to any one of claims 1-9, characterized in that, The mounting plate (1) is connected to a fixing bracket (9) on its back side. At least two opposite side walls of the mounting shell (3) are provided with fixing parts (32) that protrude outward. The fixing parts (32) and the fixing brackets (9) are provided in a one-to-one correspondence. The fixing parts (32) and the fixing brackets (9) are detachably connected.

12. A fume extraction device, comprising a fume collection hood, characterized in that, It also includes an air detection structure as described in any one of claims 1-11, wherein the mounting plate (1) forms an outer plate structure of the smoke hood, and the mounting shell (3) is located inside the smoke hood; or, the smoke hood has an installation opening, the mounting plate (1) is placed over the installation opening and is flush with the surface of the corresponding part of the smoke hood, and the mounting shell (3) is located inside the smoke hood.

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