Oil fume treatment device

Abstract

This utility model discloses an oil fume treatment device, belonging to the field of household appliance technology. The oil fume treatment device includes a housing, a fan, and a filter mechanism. The housing forms a smoke collection chamber inside, and an air inlet communicating with the smoke collection chamber is provided at the front end of the housing. The fan is disposed in the smoke collection chamber, with its air inlet facing the air inlet. The filter mechanism includes a filter screen, which is disposed at the air inlet to block at least part of the air inlet. When the filter screen blocks the air inlet, the air inlet is located behind the filter screen. The filter screen and the air inlet are spaced apart, and the filter screen has multiple through holes to ensure uniform airflow. The air inlet is a velocity concentration area. The filter screen is located in front of the air inlet, and it acts as a buffer and rectifyer, causing the originally uneven airflow to be redistributed when passing through the filter screen, thereby achieving a balance of velocity and pressure when flowing out of the filter screen. This achieves uniform airflow at the front end of the air inlet and uniform airflow velocity on both sides of the air inlet.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, and in particular to an oil fume treatment device. Background Technology

[0002] Common kitchen appliances such as range hoods and integrated stoves have oil fume treatment functions and can exhaust smoke. Their smoke exhaust principle is based on the principle of aerodynamics. The motor drives the impeller to rotate, which exhausts the air inside the volute and creates negative pressure. Atmospheric pressure then draws the air in the kitchen space, carrying the oil fumes, into the air inlet, and then exhausts the oil fumes outdoors through the air duct and exhaust pipe.

[0003] like Figure 1 As shown, the current range hood uses a fan 40 with an axial intake and radial exhaust, resulting in the center of the air inlet 41 and the center of the air outlet 42 being spaced apart in the left-right direction. The conventional approach is to align the air inlet 41 with the air inlet 12 on the housing 10 to ensure that the fan 40 provides equal smoke extraction to both sides. However, this causes the center of the air outlet 42 to deviate from the center of the housing 10, resulting in a poorer overall appearance and a less attractive look, which is unacceptable to users.

[0004] To solve the aforementioned problems, such as Figure 2 As shown, by adjusting the position of the fan 40 inside the housing 10, the center of the air inlet 41 is offset from the center of the air inlet 12 of the housing 10, so that the air outlet 42 does not deviate too much from the center of the housing 10, thereby improving the overall texture and making the appearance more aesthetically pleasing, thus ensuring a better user experience. Figure 2 The middle arrow indicates the air intake and exhaust directions of the fan 40.

[0005] Most current stoves are designed with two burners on the left and right sides. Because the fan 40 is offset inside the housing 10, the air inlet 41 of the fan 40 is biased towards one burner, resulting in different air intake volumes on the left and right sides of the air inlet 12. This leads to inconsistent smoke extraction effects on the left and right sides, making it impossible to achieve a good smoke extraction effect on the left and right burners. Utility Model Content

[0006] This invention provides an oil fume treatment device to solve the technical problem of inconsistent oil fume absorption effects on the left and right sides in the prior art.

[0007] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0008] An oil fume treatment device includes: a housing, the interior of which forms a smoke collection chamber, and an air inlet communicating with the smoke collection chamber at the front end of the housing; a fan, the fan being disposed within the smoke collection chamber, the air inlet of the fan facing the air inlet; and a filtration mechanism including a filter screen, the filter screen being disposed at the air inlet to block at least a portion of the air inlet, wherein when the filter screen blocks the air inlet, the air inlet is located behind the filter screen, the filter screen and the air inlet are spaced apart, and the filter screen is provided with multiple through holes to allow for uniform airflow.

[0009] Preferably, the distance between the filter and the air inlet is g, where g ≥ 10 mm.

[0010] As a preferred option, g=20mm.

[0011] Preferably, the fume treatment device further includes an air guiding mechanism disposed on the housing. The air guiding mechanism includes a first driving component and an air guiding plate. The first driving component can drive the air guiding plate to move between an open position and a closed position to open or close the air inlet. The air guiding plate is located in front of the filter screen. The filter screen is directly connected to the housing. Alternatively, the fume treatment device further includes an elastic element. The elastic element is connected to both the filter screen and the housing. When the air guiding plate is in the closed position, it abuts against the filter screen to compress the elastic element.

[0012] Preferably, the filtration mechanism further includes a second drive assembly, which is capable of driving the filter screen to move in a straight line and to rotate the filter screen about an axis. The rotation axis of the filter screen extends in the left-right direction of the housing, and the filter screen is detachably connected to the second drive assembly.

[0013] Preferably, the second drive assembly includes a linear drive assembly, a first rotation assembly, and a second rotation assembly. The linear drive assembly includes a guide rail disposed on the housing and extending in a vertical direction. The first rotation assembly includes a first motor and a swing arm. The first motor is slidably connected to the guide rail and is used to drive the swing arm to rotate around a first axis. The second rotation assembly includes a second motor disposed at the end of the swing arm away from the first motor. The filter screen is detachably connected to the second motor and is used to drive the filter screen to rotate around a second axis. The second axis is parallel to and spaced apart from the first axis.

[0014] Preferably, the filtration mechanism further includes an installation structure, the installation structure including an installation plane having a magnetic attraction area; the filter screen has a positioning plane, the positioning plane being in surface contact with the installation plane and being able to be attracted by the magnetic attraction area.

[0015] Preferably, the filtering mechanism further includes a first electromagnetic component, which includes a first coil, through which current is passed to generate an electromagnetic attraction force in the magnetic attraction area.

[0016] Preferably, a positioning post is provided on the mounting plane, and a positioning hole is provided on the filter screen, and the positioning post can pass through the positioning hole.

[0017] Preferably, the air inlet has a first longitudinal central section extending in the front-back direction, the air inlet has a second longitudinal central section extending in the front-back direction, and the fan also has an air outlet. The second longitudinal central section and at least a portion of the air outlet are distributed horizontally on both sides of the first longitudinal central section. Taking the first longitudinal central section as the interface, the total area of ​​the through holes arranged on the same side as the second longitudinal central section is the first total ventilation area, and the total area of ​​the through holes arranged on the opposite side of the second longitudinal central section is the second total ventilation area. The first total ventilation area is smaller than the second total ventilation area.

[0018] The beneficial effects of this utility model are:

[0019] The oil fume treatment device proposed in this utility model has a smoke collection chamber formed inside the shell, and an air inlet communicating with the smoke collection chamber is provided at the front end of the shell; a fan is provided in the smoke collection chamber, and the air inlet of the fan faces the air inlet; the filtration mechanism includes a filter screen, which is provided at the air inlet to block at least part of the air inlet. When the filter screen blocks the air inlet, the air inlet is located behind the filter screen. The filter screen and the air inlet are spaced apart, and multiple through holes are provided on the filter screen to make the airflow uniform. External fumes pass through the filter and reach the fan's air inlet. The air inlet is a concentrated flow velocity area. A filter is installed in front of the air inlet. Because the filter is a certain distance away from the air inlet, the airflow redistributed by the filter has a certain buffer space or time, so that the airflow can be uniform when entering the air inlet. This allows the filter to perform buffering and rectification functions. The airflow that was originally uneven in speed is redistributed when passing through the filter, so that the speed and pressure are balanced after flowing out of the filter. This achieves uniform airflow at the front of the air inlet and makes the airflow velocity on the left and right sides of the air inlet uniform. Attached Figure Description

[0020] Figure 1 This is a first schematic diagram of an existing fume treatment device;

[0021] Figure 2This is a second schematic diagram of an existing fume treatment device;

[0022] Figure 3 This is a front view of the fume treatment device provided in this embodiment of the utility model;

[0023] Figure 4 This is a cross-sectional view of the fume treatment device provided in this embodiment of the utility model;

[0024] Figure 5 This is a partial front view of the oil fume treatment device provided in this embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of a filter screen provided in an embodiment of this utility model;

[0026] Figure 7 This is a first schematic diagram of a partial structure of the fume treatment device provided in this embodiment of the utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the fume treatment device provided in this embodiment of the utility model;

[0028] Figure 9 This is a second schematic diagram showing a partial structure of the fume treatment device provided in this embodiment of the utility model;

[0029] Figure 10 This is a third schematic diagram showing a partial structure of the fume treatment device provided in this embodiment of the utility model;

[0030] Figure 11 This is a partial structural side view of the fume treatment device provided in this embodiment of the utility model;

[0031] Figure 12 This is a first sectional view of a portion of the structure of the fume treatment device provided in this embodiment of the utility model;

[0032] Figure 13 This is a second sectional view of a portion of the structure of the fume treatment device provided in this embodiment of the utility model;

[0033] Figure 14 This is a third sectional view of a portion of the structure of the fume treatment device provided in this embodiment of the utility model;

[0034] Figure 15 This is a fourth sectional view of a portion of the structure of the fume treatment device provided in this embodiment of the utility model;

[0035] Figure 16 This is a fourth schematic diagram showing a partial structure of the fume treatment device provided in this embodiment of the utility model;

[0036] Figure 17This is a partial structural schematic diagram of the filtration mechanism provided in an embodiment of the present utility model;

[0037] Figure 18 This is a partial exploded view of the filtration mechanism provided in this embodiment of the utility model;

[0038] Figure 19 This is a partial structural cross-sectional view of the filtration mechanism provided in an embodiment of the present utility model.

[0039] In the picture:

[0040] 10. Shell; 11. Smoke collection chamber; 12. Air inlet;

[0041] 20. Air guide mechanism; 21. First drive assembly; 22. Air guide plate; 221. First air guide plate; 2211. First plate body; 2212. Second plate body; 222. Second air guide plate; 2221. Air outlet;

[0042] 30. Filtering mechanism; 31. Second drive assembly; 311. Linear drive assembly; 312. First rotating assembly; 313. Second rotating assembly; 32. Filter screen; 321. Positioning hole; 322. Through hole; 33. Mounting structure; 331. Mounting plane; 332. Mounting hole; 333. First limiting part; 334. First mounting part; 335. Second mounting part; 34. First electromagnetic assembly; 35. Positioning post; 351. Second limiting part; 36. Positioning drive assembly; 361. Second electromagnetic assembly; 362. Reset component; 37. Weighing assembly; 371. Load-bearing component; 372. Guide post; 373. Gravity sensor;

[0043] 40. Fan; 41. Air inlet; 42. Air outlet;

[0044] 100, First longitudinal center section; 200, Second longitudinal center section. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0049] This embodiment provides an oil fume treatment device, which can be a side-draft range hood, a top-mounted range hood, a European-style range hood, an integrated stove, etc. All devices capable of treating oil fumes are within the protection scope of this optional embodiment.

[0050] See Figures 3 to 7 The fume treatment device includes a housing 10, a fan 40, and a filter mechanism 30. The interior of the housing 10 forms a fume collection chamber 11, and the front end of the housing 10 is provided with an air inlet 12 communicating with the fume collection chamber 11. The fan 40 is disposed in the fume collection chamber 11, and the air inlet 41 of the fan 40 faces the air inlet 12. The filter mechanism 30 includes a filter screen 32, which is disposed at the air inlet 12 to block at least part of the air inlet 12. When the filter screen 32 blocks the air inlet 12, the air inlet 41 is located behind the filter screen 32. The filter screen 32 and the air inlet 41 are spaced apart. The filter screen 32 is provided with a plurality of through holes 322 to make the airflow flow evenly.

[0051] External fumes pass through filter 32 and reach the air inlet 41 of fan 40. Air inlet 41 is a region of concentrated airflow. Filter 32 is installed in front of air inlet 41. Since there is a certain distance between filter 32 and air inlet 41, the airflow redistributed by filter 32 has a certain buffer space or time. This allows the airflow to be uniform when entering air inlet 41, enabling filter 32 to perform buffering and rectification functions. This allows the originally uneven airflow to be redistributed when passing through filter 32, so that the speed and pressure are balanced after flowing out of filter 32. This achieves uniform airflow at the front end of air inlet 41 and uniform airflow velocity on the left and right sides of air inlet 12.

[0052] In some embodiments, the lateral area of ​​the filter screen 32 is larger than the lateral area of ​​the air inlet 41 to achieve better airflow uniformity. In this embodiment, the lateral direction refers to the left-right direction of the smoke collection chamber 11.

[0053] The distance between the filter screen 32 and the air inlet 41 is g, where g ≥ 10 mm. A larger distance g results in better airflow uniformity at the front end of the air inlet 41 due to the filter screen 32. However, considering the limited internal space of the housing 10, the distance g cannot be too large. The distance g can be 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, etc., preferably g = 20 mm.

[0054] The air inlet 12 has a first longitudinal central section 100 extending in the front-to-back direction, and the air inlet 41 has a second longitudinal central section 200 extending in the front-to-back direction. The fan 40 also has an air outlet 42. In the horizontal direction, the second longitudinal central section 200 is located on one side of the first longitudinal central section 100, and at least part of the air outlet 42 is located on the other side of the first longitudinal central section 100. Taking the first longitudinal central section 100 as the interface, the total area of ​​the through holes 322 located on the same side as the second longitudinal central section 200 is the first total ventilation area, and the total area of ​​the through holes 322 located on the opposite side of the second longitudinal central section 200 is the second total ventilation area. The first total ventilation area is smaller than the second total ventilation area. The air inlet resistance of the air inlet 12 area corresponding to the second total ventilation area is relatively small, while the air inlet resistance of the air inlet 12 area corresponding to the first total ventilation area is relatively large. This can improve the air volume and smoke extraction effect of the air inlet 12 area on the opposite side of the second longitudinal central section 200, thereby achieving the effect of redistributing the left and right air volume of the air inlet 12.

[0055] In summary, by adjusting the position of the fan 40 within the housing 10 so that the second longitudinal central section 200 is located on one side of the first longitudinal central section 100, and at least part of the air outlet 42 is located on the other side of the first longitudinal central section 100, and by setting the first total ventilation area to be smaller than the second total ventilation area, it is possible to achieve a relatively centered air outlet 42 of the fan 40 in the fume treatment device, and also to ensure uniform air intake on both sides of the air inlet 12 of the fume treatment device and uniform fume extraction effect, taking into account both the overall texture and the uniform air intake on both sides.

[0056] For example, the through hole 322 can be circular, elliptical, polygonal, oval, irregular, etc. All types of through hole 322 shapes are within the protection scope of the embodiments of this disclosure, and will not be described in detail in the embodiments of this disclosure.

[0057] In some embodiments, such as Figure 6 and Figure 7 As shown, at least two arrayed through-hole groups are formed on the filter screen 32. The at least two arrayed through-hole groups are arranged sequentially from right to left (from the first longitudinal center section 100 to the second longitudinal center section 200). All through holes 322 in each arrayed through-hole group have the same diameter. The diameter of the through holes 322 in the at least two arrayed through-hole groups gradually decreases from right to left. With this structure, the total area of ​​each of the at least two arrayed through-hole groups can gradually decrease from right to left, thereby achieving the effect that the second total ventilation area is greater than the first total ventilation area.

[0058] Furthermore, since the through holes 322 inside each array through hole group are of the same size, it means that the through holes 322 inside each array through hole group only need to be processed using molds of the same size. The entire filter screen 32 only needs to be processed using fewer molds of different sizes, which can reduce the cost of processing molds and reduce the processing difficulty of the filter screen 32.

[0059] For example, such as Figure 6 As shown, the filter screen 32 has two arrayed through-hole groups, namely array through-hole group A and array through-hole group B, which are arranged sequentially from right to left. The diameter of the through-hole 322 in array through-hole group A is larger than the diameter of the through-hole 322 in array through-hole group B. Through the aforementioned structural arrangement, the second total ventilation area can be made larger than the first total ventilation area.

[0060] For example, such as Figure 7As shown, the filter screen 32 has five arrayed through-hole groups, namely array through-hole group A, array through-hole group B, array through-hole group C, array through-hole group D, and array through-hole group E. Array through-hole groups A to E are arranged sequentially from right to left. The diameter of the through-hole 322 in array through-hole group A is larger than the diameter of the through-hole 322 in array through-hole group B. The diameter of the through-hole 322 in array through-hole group B is larger than the diameter of the through-hole 322 in array through-hole group C. The diameter of the through-hole 322 in array through-hole group C is larger than the diameter of the through-hole 322 in array through-hole group D. The diameter of the through-hole 322 in array through-hole group D is larger than the diameter of the through-hole 322 in array through-hole group E.

[0061] Of course, in other alternative embodiments, the number of array via groups can be three, four, six or more, and this embodiment will not provide examples of each.

[0062] See Figures 8 to 16 The fume treatment device also includes an air guide mechanism 20, which is disposed in the housing 10. The air guide mechanism 20 includes a first drive component 21 and an air guide plate 22. The first drive component 21 can drive the air guide plate 22 to move between an open position and a closed position to open or close the air inlet 12. The air guide plate 22 is located in front of the filter screen 32.

[0063] In some embodiments, the air guide plate 22 is a single plate structure. When the first driving component 21 drives the air guide plate 22 to open, the air guide plate 22 flips forward. In some embodiments, the air guide plate 22 includes a first air guide plate 221 and a second air guide plate 222. The first air guide plate 221 is disposed on the front side of the housing 10 and can flip forward relative to the housing 10. The lower end of the second air guide plate 222 is located below the air inlet 12 and is rotatably connected to the housing 10. The upper end of the second air guide plate 222 is slidably connected to the first air guide plate 221. An air guide port 2221 is provided on the second air guide plate 222. External oil fumes can enter the space enclosed by the air guide plate 22 and the housing 10 through the air guide port 2221 and reach the filter screen 32, and then enter the smoke collection chamber 11.

[0064] In some embodiments, the first air guide plate 221 is a single plate structure. The first air guide plate 221 and the second air guide plate 222 can be driven independently or in conjunction. Exemplarily, one end of the first driving component 21 is rotatably connected to the housing 10, and the other end of the first driving component 21 is rotatably connected to the first plate 2211. The first driving component 21 is a linear driving mechanism, such as a linear motor. When the linear motor is in the deployed state, the first air guide plate 221 flips forward and drives the second air guide plate 222 to rotate, increasing the distance between the first air guide plate 221 and the air inlet 12, thereby improving the smoke extraction effect.

[0065] In some embodiments, the first air guide plate 221 includes a first plate 2211 and a second plate 2212 hinged together. The first plate 2211 is located above the second plate 2212, and the second plate 2212 is capable of flipping forward relative to the first plate 2211. The first drive assembly 21 is used to drive the first plate 2211 to flip relative to the housing 10. The second plate 2212 can employ a separate drive mechanism. Exemplarily, the drive mechanism can be a linear motor, with one end of the linear motor rotatably connected to the first plate 2211 and the other end of the linear motor rotatably connected to the second plate 2212. Alternatively, the drive mechanism can be a rotary motor, with the shaft of the rotary motor fixedly connected to the shaft of the second plate 2212.

[0066] The air guide plate 22 is located on the front side of the housing 10, and is used as a reference to define the front-back, up-down, and left-right directions.

[0067] In some embodiments, the filter screen 32 is directly connected to the housing 10, making the distance g between the filter screen 32 and the air inlet 41 a fixed value, and simplifying the installation of the filter screen 32 and the housing 10. Exemplarily, the filter screen 32 and the housing 10 can be snap-fitted, welded, magnetically connected, etc., and all structures that enable the filter screen 32 and the housing 10 to be detachably or fixedly connected are within the protection scope of this optional embodiment.

[0068] In some embodiments, the fume treatment device further includes an elastic element connected to both the filter screen 32 and the housing 10. When the air guide plate 22 is in the closed position, it abuts against the filter screen 32 to compress the elastic element. When the air guide plate 22 is in the open position, the elastic element returns to its original position, ensuring that the distance g between the filter screen 32 and the air inlet 41 is greater than or equal to 10 mm. This allows the filter screen 32 to uniformly distribute the airflow velocity from left to right at the air inlet 12. When the air guide plate 22 is in the closed position, the elastic element is compressed, allowing the filter screen 32 to be housed within the limited narrow space between the fan 40 and the filter screen 32. The thickness of this space can be less than 10 mm, thus enabling a lightweight design for the fume treatment device. In other words, by providing an elastic element, the distance g between the filter screen 32 and the air inlet 41 is greater than or equal to 10 mm in the operating state, and the filter screen 32 is housed within a narrow space in the non-operating state, where the distance g between the filter screen 32 and the air inlet 41 can be less than 10 mm. The elastic element can be a spring.

[0069] In some embodiments, the filter screen 32 is fixedly installed. In some embodiments, the filtration mechanism 30 further includes a second drive assembly 31, which can drive the filter screen 32 to move linearly and rotate about an axis. The rotation axis of the filter screen 32 extends in the left-right direction of the housing 10, and the filter screen 32 is detachably connected to the second drive assembly 31. By setting the second drive assembly 31 to drive the filter screen 32 to move, the position of the filter screen 32 can be adjusted in a confined space. The second drive assembly 31 can drive the filter screen 32 to move linearly and rotate about an axis. The rotation axis of the filter screen 32 extends in the left-right direction of the housing 10, allowing the filter screen 32 to move to a position that is easy to disassemble, so as to avoid the air guide plate 22. By setting the filter screen 32 to be detachably connected to the second drive assembly 31, it is convenient to disassemble and assemble the filter screen 32.

[0070] When the second drive assembly 31 drives the filter 32, it moves the filter 32 from its initial position to a target position to facilitate the operator's removal of the filter 32. After the operator installs the filter 32 into the second drive assembly 31, the second drive assembly 31 drives the filter 32 from the target position back to its initial position. When the filter 32 is in its initial position, it obstructs at least part of the air inlet 12. In its initial position, the filter 32 is located behind the air inlet 12, or embedded in the air inlet 12, or located in front of the air inlet 12. For example, when the filter 32 obstructs the air inlet 12, it is located in front of the air inlet 12.

[0071] The second drive assembly 31 can drive the filter screen 32 to extend outward from the air guide 2221. The first air guide plate 221 and the second air guide plate 222 work together to improve the smoke extraction effect and also make the space for disassembling the filter screen 32 smaller. By driving the filter screen 32 to extend outward from the air guide 2221 through the second drive assembly 31, it is easier to disassemble the filter screen 32.

[0072] The movement path of the filter screen 32 can be set according to actual needs. For example, it can move in a straight line along the front-back direction or in a straight line along the up-down direction, combined with rotation around an axis to achieve the movement of the filter screen 32. For example, it can move in a straight line along the up-down direction, combined with rotation around a first axis and rotation around a second axis to achieve the movement of the filter screen 32. In the attached figure, O1 represents the first axis and O2 represents the second axis.

[0073] For example, the second drive assembly 31 includes a linear drive assembly 311, a first rotation assembly 312, and a second rotation assembly 313. The linear drive assembly 311 drives the first rotation assembly 312 to move in a vertical direction. The first rotation assembly 312 drives the second rotation assembly 313 to rotate around a first axis. The second rotation assembly 313 drives the filter screen 32 to rotate around a second axis. The first axis and the second axis are parallel and spaced apart. The filter screen 32 is detachably connected to the second rotation assembly 313. When the filter screen 32 needs to be cleaned, the linear drive assembly 311, the first rotation assembly 312, and the second rotation assembly 313 cooperate to drive the filter screen 32 to move, so that the filter screen 32 moves from its initial position to a target position that is easy to disassemble.

[0074] For example, the linear drive assembly 311 includes a guide rail disposed on the housing 10 and extending in the vertical direction; the first rotation assembly 312 includes a first motor and a swing arm, the first motor being slidably connected to the guide rail, and the first motor being used to drive the swing arm to rotate around a first axis; the second rotation assembly 313 includes a second motor disposed at the end of the swing arm away from the first motor, the filter screen 32 being detachably connected to the second motor, and the second motor being used to drive the filter screen 32 to rotate around a second axis.

[0075] The linear drive assembly 311 is used to drive the first rotating assembly 312 to move in the vertical direction, that is, the first motor can move along the guide rail. The linear drive assembly 311 can be a linear guide rail, or a cylinder, a hydraulic cylinder, or a motor and gear rack assembly. Exemplarily, the linear drive assembly 311 includes a drive motor, a gear, and a rack. The drive motor is connected to the gear to drive the gear to rotate. The rack is fixedly mounted on the guide rail, and the gear meshes with the rack. The first motor is fixed to the drive motor. When the drive motor drives the gear to rotate, the gear moves along the rack, causing the drive motor and the first motor to move, thus enabling the first motor to move along the guide rail.

[0076] See Figure 11 When the air guide plate 22 is in the closed position, and the filter screen 32 needs to be cleaned, the controller controls the first drive assembly 21 to drive the air guide plate 22 from the closed position to the open position. Figure 12 As shown, at this time, the filter screen 32 is in the initial position and is vertical; then, the controller controls the second drive assembly 31 to move the filter screen 32 from the initial position along a straight line and rotate it around the first axis to the first position, as shown. Figure 13 and Figure 14 As shown, this causes the filter screen 32 to move away from the smoke collection port and avoid the air guide plate 22; finally, the controller controls the second drive assembly 31 to move the filter screen 32 at the first position along a straight line and rotate it around the first axis and the second axis to the target position, as shown. Figure 15 As shown, this causes the lower end of filter 32 to move forward and upward. Figure 16As shown, the filter screen 32 is in the target position. At this time, the filter screen 32 extends outward from the air guide 2221, making it easy to remove the filter screen 32.

[0077] In the process of the second drive component 31 moving the filter screen 32 from the initial position to the first position, the filter screen 32 first moves upward and the swing arm rotates forward, so that the filter screen 32 moves forward and upward from the initial position to the second position; then the filter screen 32 moves downward and the swing arm rotates forward, so that the filter screen 32 moves forward and downward from the second position to the first position, thereby realizing the movement of the filter screen 32.

[0078] To ensure stable movement of the filter screen 32, two sets of second drive assemblies 31 are provided, distributed on opposite sides of the filter screen 32. The filter screen 32 and the second drive assembly 31 are detachably connected, which can be by screw connection, snap-fit ​​connection or magnetic connection.

[0079] See Figures 8 to 10 , Figures 17 to 19 The filtration mechanism 30 also includes a mounting structure 33, which includes a mounting plane 331 with a magnetic attraction area. The filter screen 32 has a positioning plane, which is in surface contact with the mounting plane 331, allowing the filter screen 32 to be attracted by the magnetic attraction area. The mounting structure 33 provides support, and the surface contact between the positioning plane of the filter screen 32 and the mounting plane 331 increases the contact area, making the magnetic attraction of the filter screen 32 more stable. The magnetic attraction facilitates the installation and removal of the filter screen 32, enabling quick installation and removal.

[0080] Specifically, the mounting structure 33 is disposed on the second drive assembly 31. The mounting structure 33 serves as a transition, enabling the filter screen 32 to be smoothly connected to the second drive assembly 31. For example, the motor shaft of the second motor is connected to the mounting structure 33, and the second motor drives the mounting structure 33 to rotate around the second axis, thereby causing the filter screen 32 to rotate.

[0081] In some embodiments, the mounting structure 33 includes a permanent magnet, and at least a portion of the filter screen 32 is made of metal to facilitate magnetic attraction. Exemplarily, a portion of the filter screen 32 is made of metal, while the remaining portion may be made of either metal or a non-metallic material.

[0082] In some embodiments, the filter mechanism 30 further includes a first electromagnetic component 34, which includes a first coil. Current flows through the first coil to generate an electromagnetic attraction force for adsorbing the filter screen 32. By providing the first electromagnetic component 34, a stronger electromagnetic attraction force can be applied to the filter screen 32, ensuring a stable installation between the filter screen 32 and the mounting structure 33 and preventing the filter screen 32 from shifting or falling off. The magnitude of the electromagnetic attraction force provided by the first electromagnetic component 34 can be changed by adjusting the current. A larger electromagnetic attraction force is provided when the filter screen 32 is installed on the mounting structure 33, while a smaller electromagnetic attraction force is provided when the filter screen 32 is removed, making it easier to install and remove the filter screen 32.

[0083] When the first coil is energized, it generates an electromagnetic attraction force. The greater the current, the greater the electromagnetic attraction force. The magnitude of the electromagnetic attraction force provided by the first electromagnetic component 34 can be changed by adjusting the current. For example, the first coil can generate at least two levels of electromagnetic attraction force, and the maximum electromagnetic attraction force generated by the first coil is greater than or equal to twice the weight of the filter screen 32 to ensure the stability of the filter screen 32's adsorption. When removing the filter screen 32, the electromagnetic attraction force can be reduced to facilitate removal, but the electromagnetic attraction force should ideally be greater than a first set value to prevent the filter screen 32 from slipping. For example, the first set value is 5N-10N, which ensures the adsorption of the filter screen 32 while allowing the user to remove it with relatively little force.

[0084] In some embodiments, the filtration mechanism 30 includes a permanent magnet and a first electromagnetic component 34. The permanent magnet is used to attract the filter screen 32, and the first electromagnetic component 34 includes a first coil. Current is passed through the first coil to generate an electromagnetic attraction force for attracting the filter screen 32. When removing the filter screen 32, the electromagnetic attraction force of the first electromagnetic component 34 can be reduced to 0, that is, the power to the first electromagnetic component 34 can be turned off, and only the magnetic force of the permanent magnet is used to prevent the filter screen 32 from slipping, making it easier to remove the filter screen 32.

[0085] The first coil provides electromagnetic attraction force, i.e., provides electromagnetic attraction force to the magnetic attraction area. In some embodiments, the mounting structure 33 includes a mounting block, one surface of which serves as a mounting plane 331. The first coil can be disposed inside the mounting block or embedded in the mounting plane 331. Exemplarily, the first coil is embedded in the mounting plane 331, specifically in the magnetic attraction area, and the first coil can directly contact the filter screen 32 to ensure magnetic attraction stability.

[0086] A positioning post 35 is provided on the mounting plane 331, and a positioning hole 321 is provided on the filter screen 32, through which the positioning post 35 can pass. The positioning post 35, in cooperation with the positioning hole 321, positions the filter screen 32. On one hand, when installing the filter screen 32, aligning the positioning hole 321 on the filter screen 32 with the positioning post 35 on the mounting plane 331 and pushing the filter screen 32 allows the positioning post 35 to pass through the positioning hole 321, facilitating quick installation of the filter screen 32. On the other hand, when disassembling the filter screen 32, the positioning post 35, passing through the positioning hole 321, acts as a limit, preventing the filter screen 32 from slipping and improving safety.

[0087] In some embodiments, the positioning post 35 is fixed to the mounting plane 331, and the height of the positioning post 35 protruding from the mounting plane 331 is a fixed value, which can be set according to actual needs. In some embodiments, the positioning post 35 is slidably disposed on the mounting plane 331, and the filter mechanism 30 further includes a positioning drive assembly 36, which is used to drive the positioning post 35 to extend or retract relative to the mounting plane 331. When disassembling the filter screen 32, the positioning post 35 retracts relative to the mounting plane 331. At this time, only the electromagnetic attraction force of the first electromagnetic assembly 34 attracts the filter screen 32. Since the electromagnetic attraction force is small during disassembly and the positioning post 35 has already retracted, there is no need to lift the filter screen 32 upwards; it is only necessary to drag the filter screen 32 away from the mounting plane 331, thus achieving quick disassembly of the filter screen 32 without occupying a large space. After disassembling the filter screen 32, the positioning post 35 extends relative to the mounting plane 331 to facilitate positioning when installing the filter screen 32.

[0088] Exemplarily, the positioning drive assembly 36 is a component capable of linear motion, such as a cylinder, hydraulic cylinder, or linear motor, to drive the positioning post 35 to move linearly. Exemplarily, the positioning drive assembly 36 is an electromagnetic assembly, including a second electromagnetic assembly 361 and a reset member 362. The second electromagnetic assembly 361 drives the positioning post 35 to retract relative to the mounting plane 331, and the reset member 362 is disposed between the positioning post 35 and the mounting structure 33 to drive the positioning post 35 to extend relative to the mounting plane 331. When disassembling the filter screen 32, the second electromagnetic assembly 361 is energized to generate an electromagnetic attraction force to attract the positioning post 35 and move it into the retracted mounting structure 33. At this time, only the electromagnetic attraction force of the first electromagnetic assembly 34 attracts the filter screen 32, facilitating quick disassembly of the filter screen 32. After disassembling the filter screen 32, the second electromagnetic assembly 361 is de-energized, and the positioning post 35 extends relative to the mounting plane 331 under the action of the reset member 362, facilitating positioning when installing the filter screen 32. The reset member 362 can be an existing spring.

[0089] Specifically, the second electromagnetic component 361 includes a second coil, through which current is passed to generate an electromagnetic attraction force. At least a portion of the positioning post 35 is made of metal to facilitate magnetic attraction. For example, a metal block is provided at one end of the positioning post 35 near the second coil to facilitate magnetic attraction.

[0090] The mounting structure 33 includes a mounting hole 332, one end of which extends through to the mounting plane 331. The second electromagnetic component 361 and the reset component 362 are disposed in the mounting hole 332. The positioning post 35 is slidably disposed at one end of the mounting hole 332 near the mounting plane 331, so that the positioning post 35 can extend or retract from the mounting plane 331.

[0091] For example, the end of the mounting hole 332 is provided with a first limiting part 333, and the outer periphery of the positioning post 35 is provided with a second limiting part 351. When the positioning post 35 extends out of the mounting plane 331, the second limiting part 351 abuts against the first limiting part 333 to play a limiting role and prevent the positioning post 35 from disengaging from the mounting hole 332.

[0092] To ensure stable installation of the filter screen 32, two sets of mounting structures 33 are provided, distributed on opposite sides of the filter screen 32. Each mounting structure 33 is equipped with a first electromagnetic component 34, a positioning post 35, a second electromagnetic component 361, and a reset component 362. Each mounting structure 33 is driven by a second drive component 31.

[0093] The filter screen 32 can be circular or rectangular. For example, the filter screen 32 is rectangular, with two positioning holes 321 distributed on both sides of the filter screen 32's length, and the positioning holes 321 are centrally located along the width of the filter screen 32. By centrally positioning the positioning holes 321 on the filter screen 32, there is no need to distinguish between top and bottom when installing the filter screen 32, making it easier to install the filter screen 32 quickly.

[0094] For example, the first coil is embedded in the mounting structure 33 and flush with the mounting plane 331. The first coil is arranged in a ring around the circumference of the positioning post 35, making full use of space, increasing the layout area of ​​the first coil, and ensuring that the filter screen 32 is subjected to uniform force. For example, a mounting groove is provided on the mounting plane 331, and the first coil is embedded in the mounting groove. A support portion is formed at the center of the mounting groove, and the positioning post 35 is disposed in the support portion.

[0095] The filtration mechanism 30 also includes a weighing component 37 and a controller. The weighing component 37 is used to acquire the weight information of the filter screen 32. The weighing component 37 is electrically connected to the controller. The controller acquires the weight change value of the filter screen 32 based on the weight information and determines when to clean the filter screen 32 based on the weight change value. When there is a lot of oil accumulated on the filter screen 32, the weight change value is large; when there is little oil accumulated on the filter screen 32, the weight change value is small. The weighing component 37 sends the weight information to the controller. The controller acquires the weight change value based on the weight information acquired by the weighing component 37 and determines whether the filter screen 32 needs to be cleaned based on the weight change value, enabling timely replacement of the filter screen 32 to ensure filtration effect.

[0096] For example, the weighing component 37 is connected to the mounting structure 33. In some embodiments, the weight information acquired by the weighing component 37 is a weight value, which includes not only the weight of the filter screen 32, but also the weight of other components connected to the weighing component 37, such as the mounting structure 33, the first electromagnetic component 34, the positioning post 35, the second electromagnetic component 361, and the reset component 362. The weighing component 37 sends the weight value to the controller, which calculates and obtains the weight change value based on the change in the weight value. The weight change value is the weight of the oil on the filter screen 32. In some embodiments, the weight information acquired by the weighing component 37 is a weight change value, which is the weight change of the filter screen 32. The weighing component 37 sends the weight change value to the controller, which can then directly obtain the weight change value as the weight of the oil on the filter screen 32.

[0097] For example, when the filter screen 32 is installed on the mounting structure 33, the weighing component 37 acquires the initial weight and records it as the first weight value. Then, it acquires the weight in real time or at set intervals and records it as the second weight value. As the oil on the filter screen 32 increases, the second weight value increases continuously. The controller calculates the weight change value based on the difference between the second weight value and the first weight value. If the weight change value is greater than or equal to the set weight value, it indicates that there is a lot of oil on the filter screen 32. At this time, the controller determines that the filter screen 32 needs to be cleaned.

[0098] The mounting structure 33 can be an integral structure or a separate structure; no limitation is made here.

[0099] For example, the mounting structure 33 includes a first mounting part 334 and a second mounting part 335. The weighing component 37 is fixedly mounted on the first mounting part 334, and the second mounting part 335 is movably connected to the weighing component 37. The mounting plane 331, the first electromagnetic component 34, and the filter screen 32 are all mounted on the second mounting part 335. The first mounting part 334 provides support. The positioning post 35, the second electromagnetic component 361, and the reset component 362 are all mounted on the second mounting part 335. The weighing component 37 can acquire the weight of the second mounting part 335, the first electromagnetic component 34, the filter screen 32, the positioning post 35, the second electromagnetic component 361, and the reset component 362. The controller determines whether the increase in oil stains on the filter screen 32 has reached the set weight value based on the weight change value.

[0100] The weighing assembly 37 includes a load-bearing component 371, a guide post 372 disposed on the load-bearing component 371, and a gravity sensor 373. The load-bearing component 371 is fixedly disposed on the first mounting portion 334, and the second mounting portion 335 is slidably disposed on the guide post 372. The gravity sensor 373 is located at the bottom of the second mounting portion 335. The guide post 372 serves two purposes: firstly, it guides the second mounting portion 335, ensuring that the second mounting portion 335 slides down the guide post 372 under gravity to fully contact the gravity sensor 373, thus ensuring the accuracy of the detection results; secondly, the guide post 372 limits the second mounting portion 335 to prevent it from detaching from the load-bearing component 371. The guide post 372 can be a cylinder or a prism. By using a prism, the second mounting portion 335 can be prevented from rotating around the guide post 372.

[0101] The first electromagnetic component 34, the filter screen 32, the positioning post 35, the second electromagnetic component 361, and the reset component 362 are all disposed on the second mounting part 335. Therefore, when the filter screen 32 is installed on the mounting plane 331, the second mounting part 335 abuts against the gravity sensor 373. That is, the second mounting part 335, the first electromagnetic component 34, the filter screen 32, the positioning post 35, the second electromagnetic component 361, and the reset component 362 all act on the gravity sensor 373.

[0102] To ensure stability, two guide posts 372 are spaced apart on the load-bearing component 371. Both guide posts 372 pass through the second mounting portion 335. The gravity sensor 373 can be positioned between the two guide posts 372 to ensure uniform force distribution. By using two guide posts 372, rotation of the second mounting portion 335 around the guide posts 372 can be prevented. In other embodiments, multiple gravity sensors 373 can be used to obtain multiple weight values, ensuring the accuracy of the detection results and preventing a malfunction of a single gravity sensor 373 from affecting normal operation.

[0103] By cooperating with the weighing component 37 and the first electromagnetic component 34, the electromagnetic adsorption force is adjusted based on the weight detection information. This allows for adjustment of the adsorption state of the filter screen 32 according to its actual condition, effectively saving energy. For example, as the weight value acquired by the weighing component 37 increases, the electromagnetic adsorption force provided by the first electromagnetic component 34 gradually increases. When the weight value acquired by the weighing component 37 is small, the first electromagnetic component 34 only needs to provide a small electromagnetic adsorption force to stably adsorb the filter screen 32, meaning the current flowing through the first coil is small, saving energy. When the weight value acquired by the weighing component 37 is large, the first electromagnetic component 34 needs to provide a larger electromagnetic adsorption force to ensure stable adsorption of the filter screen 32.

[0104] The filtering mechanism 30 also includes a position detection component and an alarm component. The position detection component detects whether the filter screen 32 is installed on the second drive component 31 and triggers the alarm component when the filter screen 32 is detached from the second drive component 31. Through the cooperation of the position detection component and the alarm component, when the filter screen 32 is detached from the mounting surface 331, the alarm component is triggered to remind the operator to install the filter screen 32 in a timely manner.

[0105] For example, a position detection component is disposed on the mounting structure 33 to detect whether the filter 32 is mounted to the mounting plane 331, and to trigger an alarm component when the filter 32 detaches from the mounting plane 331. The position detection component may employ an existing infrared sensor.

[0106] The weighing component 37, position detection component, and alarm component are all electrically connected to the controller. When the filter screen 32 is installed on the mounting plane 331, the position detection component detects that the filter screen 32 is installed. The weighing component 37 acquires the initial weight and records it as the first weight value, and then acquires the weight in real time and records it as the second weight value. The controller calculates the weight change value based on the difference between the second weight value and the first weight value. If the weight change value is greater than or equal to the set weight value, the controller sends a cleaning signal to execute the cleaning procedure and remind the operator to remove the filter screen 32 in time. For example, when the controller determines that the filter screen 32 needs to be cleaned, the controller can issue a first prompt message and execute the cleaning procedure after user confirmation. That is, the controller controls the second drive component 31 to drive the filter screen 32 from the initial position to the target position, waiting for the user to remove it.

[0107] When the filter screen 32 detaches from the mounting surface 331, the position detection component detects that the filter screen 32 has been removed and triggers the alarm component. At this time, the alarm component issues a first alarm message to remind the operator to reinstall the filter screen 32 in a timely manner. The first alarm message can be text, light, or sound.

[0108] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil fume treatment device, characterized in that, include: The housing (10) has a smoke collection chamber (11) inside, and an air inlet (12) communicating with the smoke collection chamber (11) is provided at the front end of the housing (10). A fan (40) is disposed in the smoke collection chamber (11), and the air inlet (41) of the fan (40) faces the air inlet (12). The filter mechanism (30) includes a filter screen (32), which is disposed at the air inlet (12) to block at least part of the air inlet (12). When the filter screen (32) blocks the air inlet (12), the air inlet (41) is located behind the filter screen (32). The filter screen (32) and the air inlet (41) are spaced apart. The filter screen (32) is provided with a plurality of through holes (322) to make the airflow flow evenly.

2. The fume treatment device according to claim 1, characterized in that, The distance between the filter (32) and the air inlet (41) is g, where g ≥ 10 mm.

3. The oil fume treatment device according to claim 2, characterized in that, g=20mm.

4. The fume treatment device according to claim 1, characterized in that, The fume treatment device further includes an air guide mechanism (20) disposed on the housing (10). The air guide mechanism (20) includes a first drive assembly (21) and an air guide plate (22). The first drive assembly (21) can drive the air guide plate (22) to move between an open position and a closed position to open or close the air inlet (12). The air guide plate (22) is located on the front side of the filter screen (32). The filter screen (32) is directly connected to the housing (10); or, the fume treatment device further includes an elastic element, which is connected to the filter screen (32) and the housing (10) respectively, and the air guide plate (22) abuts against the filter screen (32) to squeeze the elastic element when it is in the closed position.

5. The fume treatment device according to claim 1, characterized in that, The filter mechanism (30) further includes a second drive assembly (31), which can drive the filter screen (32) to move in a straight line and drive the filter screen (32) to rotate around an axis. The rotation axis of the filter screen (32) extends in the left and right direction of the housing (10). The filter screen (32) is detachably connected to the second drive assembly (31).

6. The fume treatment device according to claim 5, characterized in that, The second drive assembly (31) includes a linear drive assembly (311), a first rotation assembly (312), and a second rotation assembly (313). The linear drive assembly (311) includes a guide rail, which is disposed on the housing (10) and extends in the vertical direction. The first rotation assembly (312) includes a first motor and a swing arm. The first motor is slidably connected to the guide rail and is used to drive the swing arm to rotate around a first axis. The second rotation assembly (313) includes a second motor, which is disposed at the end of the swing arm away from the first motor. The filter screen (32) is detachably connected to the second motor and is used to drive the filter screen (32) to rotate around a second axis, which is parallel to and spaced apart from the first axis.

7. The fume treatment device according to claim 1, characterized in that, The filter mechanism (30) further includes an installation structure (33), which includes an installation plane (331) having a magnetic attraction area; the filter screen (32) has a positioning plane, which is in surface contact with the installation plane (331) and can be attracted by the magnetic attraction area.

8. The fume treatment device according to claim 7, characterized in that, The filtering mechanism (30) further includes a first electromagnetic component (34), which includes a first coil, through which current is passed to generate an electromagnetic attraction force in the magnetic attraction area.

9. The fume treatment device according to claim 8, characterized in that, A positioning post (35) is provided on the mounting plane (331), and a positioning hole (321) is provided on the filter screen (32). The positioning post (35) can pass through the positioning hole (321).

10. The fume treatment device according to any one of claims 1-9, characterized in that, The air inlet (12) has a first longitudinal central section (100) extending in the front-back direction, the air inlet (41) has a second longitudinal central section (200) extending in the front-back direction, and the fan (40) also has an air outlet (42). In the horizontal direction, the second longitudinal central section (200) is disposed on one side of the first longitudinal central section (100), and at least part of the air outlet (42) is disposed on the other side of the first longitudinal central section (100). With the first longitudinal center section (100) as the interface, the total area of ​​the through holes (322) arranged on the same side as the second longitudinal center section (200) is the first total ventilation area, and the total area of ​​the through holes (322) arranged on the opposite side of the second longitudinal center section (200) is the second total ventilation area. The first total ventilation area is smaller than the second total ventilation area.

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