Oil smoke treatment device

Abstract

The utility model relates to the technical field of kitchen appliances, and discloses an oil fume treatment device. The oil fume treatment device comprises an oil fume collecting hood, a baffle and an electromagnetic driving assembly, an oil fume collecting cavity is defined by the oil fume collecting hood, and the oil fume collecting cavity is provided with a first air inlet; the baffle is in sliding fit with the exhaust fume collecting hood; the electromagnetic driving assembly can drive the baffle to slide so as to close the first air inlets or open at least part of the first air inlets. According to the oil smoke treatment device, the electromagnetic driving assembly drives the baffle which is in sliding fit with the smoke collecting hood to open and close the first air inlet, so that the whole oil smoke treatment device is compact in structure and low in cost.

Description

Technical Field

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

[0002] A range hood is a widely used household appliance that typically consists of a smoke hood and a fan. The smoke hood has an air inlet, and when the fan is working, it creates a negative pressure within a certain range inside the smoke hood and outside the air inlet, thereby drawing the cooking fumes into the smoke hood and finally expelling them outdoors.

[0003] Some range hoods have a flip-up baffle at the air inlet, equipped with an electric actuator. The actuator drives the baffle to flip, thus opening and closing the air inlet. However, the flip-up action of the baffle requires a lot of space, and the electric actuator is expensive and bulky, resulting in high manufacturing costs and large size for the fume treatment device. Utility Model Content

[0004] The purpose of this utility model is to propose an oil fume treatment device, which uses an electromagnetic drive component to drive a baffle that slides with the fume hood to open and close the first air inlet, making the entire oil fume treatment device compact and low in cost.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The fume treatment device includes:

[0007] A smoke hood, wherein the smoke hood is configured to form a smoke collection chamber, and the smoke collection chamber has a first air inlet;

[0008] A baffle plate that is slidably fitted with the smoke collection hood;

[0009] An electromagnetic drive assembly capable of driving the baffle to slide to close the first air inlet or open at least a portion of the first air inlet.

[0010] As an alternative, the baffle can slide relative to the smoke hood along a first direction, and the magnetic field generated by the electromagnetic drive component can cause the baffle to be subjected to a force along the first direction. The magnitude and / or direction of the magnetic field generated by the electromagnetic drive component is adjustable so as to drive the baffle to move along the first direction.

[0011] As an alternative, at least part of the baffle is made of a ferromagnetic material;

[0012] The electromagnetic drive assembly includes a first electromagnet and a permanent magnet respectively disposed at both ends of the first air inlet along the first direction. The permanent magnet and the first electromagnet respectively generate a magnetic force on the baffle along the first direction, and the magnitude of the current flowing through the first electromagnet is adjustable; or

[0013] The electromagnetic drive assembly includes a first electromagnet and a second electromagnet respectively disposed at both ends of the first air inlet along the first direction. The first electromagnet and the second electromagnet respectively generate magnetic forces on the baffle along the first direction. The magnitude and / or direction of the current flowing through at least one of the first electromagnet and the second electromagnet is adjustable.

[0014] As an optional solution, the electromagnetic drive assembly includes a first electromagnet and a permanent magnet. The first electromagnet is disposed on the baffle, and the permanent magnet is disposed at one end of the first air inlet along the first direction. The first electromagnet can generate magnetic force on the permanent magnet, and the direction of the current flowing through it is adjustable.

[0015] As an optional solution, the electromagnetic drive assembly can drive the baffle to slide relative to the smoke collection hood along a first direction; the smoke collection hood is provided with a first stop and a second stop, the first stop and the second stop are respectively located at both ends of the first air inlet along the first direction, and are respectively configured to stop the baffle.

[0016] As an optional solution, the baffle includes:

[0017] The main body plate is slidably engaged with the second stop member and is capable of closing or opening at least part of the first air inlet.

[0018] The protrusion is connected to the main body plate and is movable between the first stop and the second stop.

[0019] As an alternative, at least a portion of the main body plate overlaps the upper side of the second stop, the second stop being provided with a magnet, and at least a portion of the baffle is made of a ferromagnetic material. The magnet applies force to the baffle to cause the baffle to press against the second stop; or

[0020] Of the main body plate and the second stop, one is provided with a slide rail extending along the first direction, and the other is provided with a slider, wherein the slide rail and the slider are in sliding engagement.

[0021] As an optional solution, the fume treatment device further includes a smoke concentration detection component, which is configured to detect the smoke concentration near the first air inlet, and is electrically connected to the electromagnetic drive component.

[0022] As an optional solution, the smoke hood is provided with at least two first air inlets, and each first air inlet is respectively provided with the baffle and the electromagnetic drive component;

[0023] The smoke concentration detection component includes at least two smoke concentration detectors, each of which detects the smoke concentration near the first air inlet and is electrically connected to the corresponding electromagnetic drive component.

[0024] As an optional solution, the smoke collection chamber also has a second air inlet, and there are two first air inlets, which are respectively located on both sides of the second air inlet.

[0025] The beneficial effects of this utility model are:

[0026] The oil fume treatment device of this utility model has a baffle that slides in conjunction with the fume collection hood, and the electromagnetic drive component can drive the baffle to slide to close the first air inlet or open at least part of the air inlet, thereby meeting different user needs. The sliding cooperation between the baffle and the fume collection hood does not occupy too much space inside the fume collection chamber, which is conducive to the compact structure of the oil fume treatment device. The baffle will not extend outside the fume collection hood and interfere with the user's cooking operation. Driving the baffle to move through the electromagnetic drive component is not only low-cost, but the electromagnetic drive component is also small in size, which can further improve the structural compactness of the oil fume treatment device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the fume treatment device provided in a specific embodiment of this utility model;

[0028] Figure 2 This is a cross-sectional schematic diagram of the fume treatment device provided in a specific embodiment of this utility model;

[0029] Figure 3 This is a schematic diagram of the fume treatment device provided in a specific embodiment of the present invention when both baffles are closed and the corresponding second air inlets are closed.

[0030] Figure 4 This is a schematic diagram of the fume treatment device provided in a specific embodiment of the present invention when both baffles have their corresponding second air inlets open.

[0031] Figure 5 This is a schematic diagram of the fume treatment device provided in a specific embodiment of the present invention with the left baffle open and the right baffle closed.

[0032] Figure 6 This is a schematic diagram of the fume treatment device provided in a specific embodiment of the present invention when the right side baffle is open and the left and right side baffles are closed.

[0033] Figure 7 This is a schematic diagram of a baffle and an electromagnetic drive assembly in cooperation according to a specific embodiment of this utility model;

[0034] Figure 8 This is a schematic diagram of the second type of baffle and electromagnetic drive assembly provided in a specific embodiment of this utility model;

[0035] Figure 9 This is a schematic diagram of the third type of baffle and electromagnetic drive assembly provided in a specific embodiment of this utility model;

[0036] Figure 10 This is a schematic diagram of the filter assembly of the fume treatment device provided in a specific embodiment of the present invention in its second state;

[0037] Figure 11 This is a schematic diagram of the fume treatment device provided in a specific embodiment of the present invention, where the smoke baffle extends outside the smoke collection hood.

[0038] In the picture:

[0039] 11. Smoke hood; 111. Second air inlet; 112. First air inlet; 113. Smoke collection chamber; 114. Clearance opening; 115. Base plate; 116. Rear side wall;

[0040] 20. Baffle; 21. Main body plate; 22. Protrusion;

[0041] 31. Electromagnetic drive assembly; 311. First electromagnet; 312. Second electromagnet; 313. Permanent magnet;

[0042] 40. Smoke concentration detection device;

[0043] 51. First stop; 511. Slide rail; 52. Second stop;

[0044] 61. Filter assembly; 611. Mesh plate; 62. First pivot; 63. Second pivot; 64. First drive assembly;

[0045] 71. Smoke baffle. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0047] 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.

[0048] 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.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] This embodiment provides an oil fume treatment device, which can be a range hood, integrated stove, etc. The following description uses a range hood as an example of an oil fume treatment device.

[0051] like Figure 1 and Figure 2 As shown, the fume treatment device includes a fume hood 11 and a fan. The fume hood 11 encloses a fume collection chamber 113, which includes a first air inlet 112 and a second air inlet 111. The fan is installed inside the fume collection chamber 113. When the fan is working, it creates a negative pressure inside the fume collection chamber 113, in a certain area outside the first air inlet 112, and in a certain area outside the second air inlet 111. This draws the fumes generated during cooking into the fume collection chamber 113 and ultimately exhausts them outdoors, thereby improving the kitchen environment.

[0052] like Figure 1 and Figure 2As shown, in this embodiment, the smoke hood 11 has a front sidewall, a rear sidewall 116, a left sidewall, a right sidewall, and a base plate 115. The first air inlet 112 and the second air inlet 111 are both located on the base plate 115 of the smoke hood 11. Optionally, the second air inlet 111 is located at the middle position of the smoke hood 11 in the left-right direction, and the smoke hood 11 has two first air inlets 112, which are respectively located on the left and right sides of the second air inlet 111. In other embodiments, the number and arrangement of the first air inlets 112 can be flexibly set and are not limited here. Figure 2 As shown, a filter structure is provided at the first air inlet 112. The filter structure can filter out larger impurities, preventing them from being sucked into the fan and causing damage. In this embodiment, the filter structure at the first air inlet 112 is integrally formed with the smoke hood 11, meaning the first air inlet 112 consists of multiple holes directly formed on the base plate 115 of the smoke hood 11. A filter assembly 61 is provided at the second air inlet 111. The filter assembly 61 and the smoke hood 11 together form a smoke collection chamber. This filter assembly 61 can also filter out larger impurities, preventing them from being sucked into the fan and causing damage.

[0053] like Figures 1-3 As shown, the fume treatment device also includes a baffle 20 and an electromagnetic drive assembly 31. The baffle 20 is slidably engaged with the fume collection hood 11, and the electromagnetic drive assembly 31 can drive the baffle 20 to slide to close the first air inlet 112 or open at least part of the first air inlet 112. That is, the opening degree of the first air inlet 112 can be changed by the baffle 20, so that the fume treatment device can choose to draw air only from the middle second air inlet 111, or from both the first air inlet 112 and the second air inlet 111. It can also choose the opening degree of the second air inlet 111, thereby adjusting the negative pressure distribution outside the fume collection hood cavity 113, ensuring that the negative pressure distribution outside the fume collection hood 11 corresponds to the fume distribution, so that the negative pressure distribution outside the fume collection cavity 10 is more reasonable, thereby improving the efficiency of fume extraction. The baffle 20 slides in conjunction with the fume hood 11, thus not occupying excessive space inside the fume collection chamber 13, which contributes to the compact structure of the fume treatment device. Furthermore, the baffle 20 does not extend outside the fume hood 11, therefore it does not interfere with the user's cooking operations. In addition, driving the baffle 20 via the electromagnetic drive component 31 is not only low-cost, but the electromagnetic drive component 31 is also small in size, further improving the compactness of the fume treatment device.

[0054] In this embodiment, by setting the second air inlet 111 as a normally open air inlet, even if the electromagnetic drive component 31 fails or the baffle 20 is not opened in time when the fan starts to work, the air passage can be kept unobstructed, thus preventing the fan from being damaged due to blocked air passage.

[0055] In this embodiment, each first air inlet 112 is equipped with a baffle 20 and an electromagnetic drive assembly 31. Thus, the two baffles 20 can be controlled independently, allowing for more flexible adjustment of the air inlet position of the smoke collection chamber 113 and the negative pressure distribution outside the smoke collection chamber 113, ensuring that the negative pressure distribution outside the smoke collection chamber 113 corresponds to the distribution of oil fumes. Specifically, as... Figure 3 As shown, when the oil fumes below the fume hood 11 are relatively few and concentrated in the middle area, the two electromagnetic drive components 31 respectively drive the corresponding baffles 20 to close the corresponding first air inlet 112, leaving only the second air inlet 111 open. Figure 4 As shown, when there is a large amount of oily smoke under the fume hood 11 and it is evenly distributed, the two electromagnetic drive components 31 respectively drive the corresponding baffles 20 to open the corresponding first air inlets 112. At this time, the second air inlet 111 and both first air inlets 112 are also open. Figure 5 As shown, when the fumes below the fume hood 11 are concentrated on the left side, the electromagnetic drive assembly 31 on the left side drives the baffle 20 on the left side to open the first air inlet 112 on the left side, and the electromagnetic drive assembly 31 on the right side drives the baffle 20 on the right side to close the first air inlet 112 on the right side. At this time, only the second air inlet 111 and the first air inlet 112 on the left side are open. Figure 6 As shown, when the oil fumes below the fume hood 11 are concentrated on the right side, the electromagnetic drive assembly 31 on the right side drives the baffle 20 on the right side to open the first air inlet 112 on the right side, and the electromagnetic drive assembly 31 on the left side drives the baffle 20 on the left side to close the first air inlet 112 on the left side. At this time, only the second air inlet 111 and the first air inlet 112 on the right side are open.

[0056] To enable the fume treatment device to automatically control the opening and closing of each first air inlet 112, the device also includes a smoke concentration detection component. This component is configured to detect the smoke concentration near the first air inlet 112 and is electrically connected to the electromagnetic drive component 31. By detecting the smoke concentration near the first air inlet 112, the distribution of fumes outside the smoke collection chamber 113 can be determined. Based on this, controlling the electromagnetic drive component 31 to open or close the corresponding first air inlet 112 enables automatic control of the air intake position of the fume treatment device.

[0057] In this embodiment, the smoke concentration detection component includes at least two smoke concentration detectors 40. Each smoke concentration detector 40 detects the smoke concentration near a first air inlet 112 and is electrically connected to the corresponding electromagnetic drive component 31. It should be noted that the "corresponding electromagnetic drive component 31" here refers to the electromagnetic drive component 31 at the first air inlet 112 detected by the smoke concentration detector 40.

[0058] Optionally, in this embodiment, the smoke concentration detector 40 is disposed near the first air inlet 112 and located inside the smoke collection chamber 113. After the fume treatment device starts working, the fumes enter the smoke collection chamber 113 from the second air inlet 111. If the smoke concentration detected by the smoke concentration detector 40 is higher than a preset value, it indicates that the smoke concentration outside the first air inlet 112 is also high, and the first air inlet 112 can be opened at this time. In this embodiment, the smoke concentration detection component includes two smoke concentration detectors 40, which are respectively disposed on the left and right sides of the smoke collection chamber 113. The smoke concentration detector 40 disposed on the left is used to detect the smoke concentration in the inner area of ​​the first air inlet 112 on the left side, and the smoke concentration detector 40 disposed on the right side is used to detect the smoke concentration in the inner area of ​​the first air inlet 112 on the right side.

[0059] In other embodiments, the smoke concentration detector 40 may also be located near the first air inlet 112 and outside the smoke collection chamber 113. The smoke concentration detector 40 can directly detect the smoke concentration outside the first air inlet 112. When the detected smoke concentration is higher than a preset value, the first air inlet 112 can be opened.

[0060] The working principle of the smoke concentration detection element 40 and the electromagnetic drive component 31, which are electrically connected, is roughly as follows: The initial state is defined as both first air inlets 112 being closed. After the fume treatment device is turned on, it defaults to operating in the initial state, meaning only the second air inlet 111 is open. During fume extraction, when the smoke concentration detected by the left smoke concentration detection element 40 is greater than a preset value, it indicates that the smoke concentration on the left side of the fume hood 11 is high. At this time, the left electromagnetic drive component 31 drives the left baffle 20 to open the left first air inlet 112. When the smoke concentration detected by the right smoke concentration detection element 40 is greater than a preset value, it indicates that the smoke concentration on the right side of the fume hood 11 is high. At this time, the right electromagnetic drive component 31 drives the right baffle 20 to open the right first air inlet 112.

[0061] like Figure 7 As shown, the electromagnetic drive assembly 31 can drive the baffle 20 to slide relative to the smoke hood 11 along a first direction, thereby opening and closing the corresponding first air inlet 112. In this embodiment, the first direction is the left-right direction. Optionally, as... Figure 2 As shown, the front and rear ends of the baffle 20 can be connected to the front and rear side plates 117 of the smoke hood 11 respectively via guide rail sliders or protruding groove structures extending along the first direction, thereby achieving a sliding fit between the baffle 20 and the smoke hood 11. In other embodiments, the first direction can be a front-back direction or other horizontal directions. Figure 7As shown, a first stop 51 and a second stop 52 are provided inside the smoke hood 11. Both the first stop 51 and the second stop 52 are connected to the smoke hood 11 and are respectively located at both ends of the first air inlet 112 along a first direction. The first stop 51 and the second stop 52 are used to stop the corresponding baffle 20, thereby limiting the movement range of the baffle 20. In this embodiment, when the baffle 20 abuts against the first stop 51, the baffle 20 completely closes the corresponding first air inlet 112; when the baffle 20 abuts against the second stop 52, the baffle 20 completely opens the corresponding first air inlet 112. In this embodiment, the first stop 51 is located at one end of the first air inlet 112 near the side wall of the smoke hood 11. Therefore, the first stop 51 can be the inner wall of the smoke hood 11 itself, or it can be a structure separately located inside the smoke hood 11. The second stop 52 is located at the end of the first air inlet 112 away from the side wall of the smoke hood 11, and is connected to the bottom plate 115 of the smoke hood 11.

[0062] Specifically, such as Figure 7 As shown, the baffle 20 includes a main body plate 21 and a protrusion 22. The main body plate 21 is slidably engaged with the second stop member 52 and can close or open at least part of the first air inlet 112. The protrusion 22 is connected to the main body plate 21 and can move between the first stop member 51 and the second stop member 52. In this way, the second stop member 52 can both limit the position of the baffle 20 and guide the baffle 20, thereby reducing the number of components in the overall fume treatment device and simplifying its structure.

[0063] In some embodiments, at least a portion of the main body plate 21 overlaps the upper side of the second stop member 52, which is equipped with a magnet. At least a portion of the baffle 20 is made of ferromagnetic material, and the magnet causes the baffle 20 to press against the smoke hood 11. When the electromagnetic drive assembly 31 drives the baffle 20 along the first direction (i.e., the left-right direction), the downward force exerted by the magnet on the baffle 20 keeps the baffle 20 in contact with and sliding against the second stop member 52, thus preventing the baffle 20 from moving upward and ensuring the overall movement accuracy of the baffle 20. Optionally, the magnet can be an electromagnet or a permanent magnet. In this embodiment, the protrusion 22 abuts against the bottom plate 115 of the smoke hood 11, so that both ends of the baffle 20 can be supported, thereby ensuring the stability of the baffle 20's movement along the first direction.

[0064] In some embodiments (not shown), the second stop 52 is fixed relative to the smoke hood 11, the baffle 20 has a protrusion, and the second stop 52 has a sliding groove extending in the first direction. The protrusion is limited within the sliding groove and can slide along the groove, thereby achieving a sliding engagement between the baffle 20 and the second stop 52 and guiding the movement of the baffle 20. In other embodiments, the protrusion may be provided on the second stop 52, and the sliding groove may be provided on the main body plate 21. In yet another embodiment, a guide rail may be provided on one of the baffle 20 and the second stop 52, and a slider may be provided on the other. The movement of the baffle 20 in the first direction is guided by the cooperation of the guide rail and the slider.

[0065] like Figure 7 As shown, the magnetic field generated by the electromagnetic drive assembly 31 can subject the baffle 20 to a force along the first direction. The magnitude and / or direction of the magnetic field generated by the electromagnetic drive assembly 31 are adjustable, thereby changing the magnitude and direction of the force on the baffle 20 in the first direction (left or right), and thus driving the baffle 20 to move along the first direction. In this embodiment, the smoke concentration detector 40 is electrically connected to the electromagnetic drive assembly 31. The current magnitude or direction of the electromagnetic drive assembly 31 is controlled according to the smoke concentration detected by the smoke concentration detector 40, thereby driving the baffle 20 to open or close the corresponding first air inlet 112.

[0066] In some embodiments, such as Figure 7As shown, at least part of the baffle 20 is made of ferromagnetic material. The electromagnetic drive assembly 31 includes a first electromagnet 311 and a permanent magnet 313 respectively disposed at both ends of the first air inlet 112 along a first direction. The permanent magnet 313 and the first electromagnet 311 respectively generate magnetic forces on the baffle 20 along the first direction, and the magnitude and / or direction of the current flowing through the first electromagnet 311 is adjustable. Taking the first electromagnet 311 disposed on the left side of the first air inlet 112 and the permanent magnet 313 disposed on the right side of the first air inlet 112 as an example, the general principle of the electromagnetic drive assembly 31 controlling the movement of the baffle 20 is as follows: In the initial state, current flows through the first electromagnet 311, and the magnetic attraction force generated by the first electromagnet 311 on the baffle 20 is greater than the magnetic attraction force generated by the permanent magnet 313 on the baffle 20. At this time, the baffle 20 is kept in the position of closing the first air inlet 112; when it is necessary to open the first air inlet 112, by gradually reducing the magnitude of the current of the first electromagnet 311, the first electromagnet 311 can be opened. As the magnetic attraction of the baffle 20 gradually decreases, the magnetic attraction of the permanent magnet 313 to the baffle 20 decreases, the baffle 20 can move to the right and gradually open the first air inlet 112. During this process, if the magnitude of the current of the first electromagnet 311 is controlled to make the magnetic attraction of the first electromagnet 311 to the baffle 20 the same as the magnetic attraction of the permanent magnet 313 to the baffle 20, the baffle 20 can be kept in a state where only part of the first air inlet 112 is open. When the current flowing through the first electromagnet 311 is very small or even zero, the baffle 20 moves to the right and eventually fully opens the first air inlet 112. In this embodiment, the first electromagnet 311 is mounted on the first stop 51, and the permanent magnet 313 is mounted on the second stop 52. In other embodiments, the relative positions of the permanent magnet 313 and the first electromagnet 311 can be interchanged.

[0067] In some embodiments, such as Figure 8As shown, at least part of the baffle 20 is made of ferromagnetic material; the electromagnetic drive assembly 31 includes a first electromagnet 311 and a second electromagnet 312 respectively disposed at both ends of the first air inlet 112 along a first direction, the first electromagnet 311 and the second electromagnet 312 respectively generate magnetic force on the baffle 20 along the first direction, and the magnitude and / or direction of the current passed through at least one of the first electromagnet 311 and the second electromagnet 312 is adjustable. The general principle of the electromagnetic drive assembly 31 controlling the movement of the baffle 20 is as follows: In the initial state, current is passed through both the first electromagnet 311 and the second electromagnet 312, and the magnetic attraction force of the first electromagnet 311 on the baffle 20 is greater than that of the second electromagnet 312. At this time, the baffle 20 remains in the position of closing the first air inlet 112. When it is necessary to open the first air inlet 112, the current passed through the first electromagnet 311 is gradually reduced (and / or the current passed through the second electromagnet 312 is gradually increased), so that the magnetic attraction force of the first electromagnet 311 on the baffle 20 gradually becomes less than that of the second electromagnet 312. The magnetic attraction force generated by electromagnet 312 on baffle 20 allows baffle 20 to move to the right and gradually open the first air inlet 112. During this process, if the current magnitude of the first electromagnet 311 and the second electromagnet 312 is controlled so that the magnetic attraction force of the first electromagnet 311 on baffle 20 is equal to that of the second electromagnet 312 on baffle 20, baffle 20 can be kept in a state where only part of the first air inlet 112 is open. When the current flowing through the first electromagnet 311 is very small or even zero, baffle 20 moves to the right closer to the second electromagnet 312 and eventually fully opens the first air inlet 112. In this embodiment, the first electromagnet 311 is mounted on the first stop 51, and the second electromagnet 312 is mounted on the second stop 52. In other embodiments, the mounting positions of the first electromagnet 311 and the second electromagnet 312 can be interchanged.

[0068] In some embodiments, such as Figure 9 As shown, the electromagnetic drive assembly 31 includes a first electromagnet 311 and a permanent magnet 313. The first electromagnet 311 is disposed on the baffle 20, and the permanent magnet 313 is disposed at one end of the first air inlet 112 along the first direction. The first electromagnet 311 can generate magnetic force on the permanent magnet 313, and the direction of the current flowing through it is adjustable. Taking the first electromagnet 311 located at the left end of the first air inlet 112, with the end facing the first air inlet 112 being the N pole, as an example, the general principle of the electromagnetic drive assembly 31 controlling the movement of the baffle 20 is as follows: In the initial state, after current is applied to the first electromagnet 311, the left side is the S pole and the right side is the N pole. At this time, the baffle 20 is attracted by the permanent magnet 313 to the position of closing the first air inlet 112; when the direction of the current applied to the first electromagnet 311 is changed, the magnetic poles of the first electromagnet 311 are reversed so that the left side is N and the right side is S. At this time, the baffle 20 moves to the right under the action of the permanent magnet 313 to the position of opening the first air inlet 112.

[0069] like Figure 2 and Figure 10 As shown, the fume treatment device also includes a first drive assembly 64. The filter assembly 61 is movably connected to the fume collection hood 11. The first drive assembly 64 can drive the filter assembly 61 to change its shape, so that the volume of the fume collection chamber 113 is adjustable. Without increasing the fan power, increasing the volume of the fume collection chamber 113 can improve the fume collection effect of the fume treatment device. Furthermore, the increased volume of the fume collection chamber 113 provides a smoother flow channel for the fumes, making it easier for the fumes to be drawn into the fume collection chamber 113, thereby improving the overall fume extraction effect. In addition, the increased volume of the fume collection chamber 113 can also provide more buffer space for the flow of fumes, reducing the collision and friction of fumes in the fume collection chamber 113, thereby reducing the operating noise of the range hood.

[0070] like Figure 2 and Figure 10 As shown, the filter assembly 61 has a first form and a second form, such as... Figure 1 and Figure 2 As shown, in the first configuration, the filter assembly 61 is housed within the smoke collection hood 11, as... Figure 10 As shown, in the second configuration, the filter assembly 61 extends at least partially beyond the fume hood 11. In this embodiment, when the filter assembly 61 switches from the first configuration to the second configuration, the volume of the fume collection chamber 113 increases and the negative pressure expands outward, thereby improving the fume extraction effect and reducing noise. Furthermore, when the filter assembly 61 switches from the first configuration to the second configuration, the actual air intake position of the fume collection chamber 113 also expands outward, thus getting closer to the source of the fumes and further improving the fume extraction efficiency. It is understood that the volume of the fume hood 11 continuously changes during the switching process from the first configuration to the second configuration. The first drive assembly 64 can obtain different sizes of the fume collection chamber 113 by driving the filter assembly 61 to any position during this process, thereby improving the flexibility of adjusting the fume extraction capacity of the fume treatment device.

[0071] In this embodiment, as Figure 2 and Figure 10As shown, the filter assembly 61 includes two mesh plates 611 arranged at an included angle. In a first configuration, the opening formed by the two mesh plates 611 faces downwards, and in a second configuration, the opening forms by the two mesh plates 611 faces upwards. Optionally, in some embodiments, both mesh plates 611 are flat plates, thus forming a standard V-shaped structure. In the first configuration, the two mesh plates 611 are inverted V-shaped, and in the second configuration, the two mesh plates 611 are upright V-shaped. In some embodiments, the mesh plates 611 can also be non-planar plates with a certain curvature. In this case, the two mesh plates 611 are configured with a non-standard V-shaped structure, but in the first configuration, the opening of the non-standard V-shaped structure faces downwards, and in the second configuration, the opening of the non-standard V-shaped structure faces upwards. In this embodiment, the mesh openings on the positive V-shaped or inverted V-shaped filter assembly 61 are tilted, meaning the negative pressure port is tilted. Therefore, with the cooperation of the two mesh plates 611, it is beneficial to form a more uniform negative pressure environment in the area below and to the side of the second air inlet 111, thereby reducing the escape of oil fumes from the side and improving the overall oil fume extraction effect of the oil fume treatment device. In this embodiment, the two mesh plates 611 are arranged on the left and right respectively.

[0072] like Figure 2 and Figure 10 As shown, the second stop 22 slides in engagement with the smoke hood 11 along the first direction. The two mesh plates 611 are pivotally connected via a first pivot 62 extending along the second direction. In this embodiment, the second direction is the front-to-back direction. The front and rear ends of the second stop 22 can be connected to the front and rear sidewalls 116 of the smoke hood via guide rails, sliders, or protruding grooves, thereby achieving a sliding engagement between the second stop 22 and the smoke hood 11. The end of the mesh plate 611 away from the first pivot 62 is pivotally connected to the second stop 22 via a second pivot 63, which is parallel to the first pivot 62. The two second stops 22 can move closer to or further away from each other along the first direction, allowing the filter assembly 61 to switch between the first and second forms. It should be noted that the baffle 20 can only open the corresponding first air inlet 112 when the filter assembly 61 is in the first or second form, thereby avoiding interference between the baffle 20 and the corresponding second stop 52.

[0073] Combination Figure 2 and Figure 10In this embodiment, the first drive component 64 is an electric actuator, and the output end of the electric actuator is connected to the first pivot 62. The general process of the first drive assembly 64 driving the filter assembly 61 to switch from the first form to the second form is as follows: the two second stop members 22 move away from each other along the first direction. During this process, one end of the mesh plate 611 rotates around the second pivot 63, while the other end rotates around the first pivot 62. The included angle formed by the lower sides of the two mesh plates 611 gradually increases, and the first pivot 62 gradually moves towards the outside of the smoke hood 11. When the two mesh plates 611 rotate to coplanarity, under the drive of the first drive component 64, the second stop members 22 move in the opposite direction (that is, the two second stop members 22 move closer to each other along the first direction). During this process, the two ends of the mesh plate 611 still rotate around the first pivot 62 and the second pivot 63 respectively. The included angle formed by the upper sides of the two mesh plates 611 gradually decreases and finally reaches the second form. The process of switching the filter assembly 61 from the second form to the first form is the reverse of the process of switching from the first form to the second form, and will not be described in detail here.

[0074] In other words, the fume treatment device of this embodiment, by setting a variable-form filter assembly 21 at the second air inlet 111, can realize the volume adjustment of the inner cavity of the fume collection chamber 10, thereby realizing the expansion of the actual air intake position and negative pressure, thus improving the fume extraction effect; and by changing the opening degree of the first air inlet 112 through the baffle 20, the fume treatment device can, based on the selected volume of the fume collection chamber 10, further select whether to open the first air inlet 112 and the opening degree of the first air inlet 112 (i.e., select the smoke intake position in the left and right directions). That is, the fume treatment device can coordinately distribute the negative pressure from multiple dimensions such as the air intake position of the second air inlet 111, the number of first air inlets 112 opened (see the description below), and the opening degree of each first air inlet 112, so that the negative pressure distribution outside the fume collection chamber 10 matches the smoke concentration distribution, so that the negative pressure distribution outside the fume collection chamber 10 is more reasonable, thereby improving the fume extraction efficiency.

[0075] like Figure 11 As shown, the fume treatment device also includes two smoke baffles 71, which are respectively disposed on the side of the two second air inlets 112 opposite to the first air inlet 111 along the first direction. In this embodiment, the first stop member 51 is provided with a slide rail 511, and the smoke baffle 71 can slide along the slide rail 511 on the first stop member 51 to extend or retract into the fume collection hood 11. Figure 1 and Figure 11 As shown, the smoke hood 11 is provided with a clearance opening 114 at the part below the first stop member 51, and the lower end of the smoke baffle 71 can extend out of the smoke hood 11 through the clearance opening 114.

[0076] The fume treatment device also includes a second drive assembly (not shown in the figure), which drives the smoke baffle 71 to move up and down. Optionally, the second drive assembly may include an electric actuator, the output end of which is connected to the smoke baffle 71, thereby driving the smoke baffle 71 to extend or retract into the smoke collection hood 11. In some embodiments, the second drive assembly includes an electromagnet, which is fixed to the first stop member 51. A ferromagnetic component is installed on the smoke baffle 71. The electromagnet attracts the ferromagnetic component, thereby generating a magnetic attraction force on the smoke baffle 71. By changing the magnitude or direction of the current in the electromagnet, its force on the smoke baffle can be changed, thereby controlling the up and down movement of the smoke baffle.

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An oil fume treatment device, characterized by, include: A smoke hood (11) is provided, which encloses a smoke collection chamber (113) and has a first air inlet (112). Baffle (20), which is slidably engaged with the smoke collection hood (11); An electromagnetic drive assembly (31) is capable of driving the baffle (20) to slide to close the first air inlet (112) or open at least a portion of the first air inlet (112).

2. The oil fume processing device according to claim 1, characterized in that, The baffle (20) can slide relative to the smoke hood (11) along a first direction. The magnetic field generated by the electromagnetic drive assembly (31) can cause the baffle (20) to be subjected to a force along the first direction. The magnitude and / or direction of the magnetic field generated by the electromagnetic drive assembly (31) are adjustable so as to drive the baffle (20) to move along the first direction.

3. The oil fume processing device according to claim 2, wherein At least a portion of the baffle (20) is made of a ferromagnetic material; The electromagnetic drive assembly (31) includes a first electromagnet (311) and a permanent magnet (313) respectively disposed at both ends of the first air inlet (112) along the first direction. The permanent magnet (313) and the first electromagnet (311) respectively generate magnetic force on the baffle (20) along the first direction, and the magnitude of the current flowing through the first electromagnet (311) is adjustable; or The electromagnetic drive assembly (31) includes a first electromagnet (311) and a second electromagnet (312) respectively disposed at both ends of the first air inlet (112) along the first direction. The first electromagnet (311) and the second electromagnet (312) respectively generate magnetic force on the baffle (20) along the first direction. The magnitude and / or direction of the current passed through at least one of the first electromagnet (311) and the second electromagnet (312) are adjustable.

4. The oil fume processing device according to claim 2, wherein The electromagnetic drive assembly (31) includes a first electromagnet (311) and a permanent magnet (313). The first electromagnet (311) is disposed on the baffle (20), and the permanent magnet (313) is disposed at one end of the first air inlet (112) along the first direction. The first electromagnet (311) can generate magnetic force on the permanent magnet (313), and the direction of the current flowing through it is adjustable.

5. The oil fume treatment device according to any one of claims 1 to 4, wherein The electromagnetic drive assembly (31) can drive the baffle (20) to slide relative to the smoke hood (11) along the first direction; the smoke hood (11) is provided with a first stop (51) and a second stop (52), the first stop (51) and the second stop (52) are respectively provided at both ends of the first air inlet (112) along the first direction, and are respectively configured to stop the baffle (20).

6. The oil fume processing device according to claim 5, characterized in that, The baffle (20) includes: The main body plate (21) is slidably engaged with the second stop (52) and is capable of closing or opening at least part of the first air inlet (112); A protrusion (22) is connected to the main body plate (21) and can move between the first stop (51) and the second stop (52).

7. The oil fume processing device according to claim 6, wherein At least a portion of the main body plate (21) overlaps the upper side of the second stop (52), the second stop (52) is provided with a magnet, at least a portion of the baffle (20) is made of ferromagnetic material, the magnet applies force to the baffle (20) to make the baffle (20) press against the second stop (52); or Of the main body plate (21) and the second stop member (52), one is provided with a groove extending along the first direction, and the other is provided with a protrusion, the protrusion slidingly engaging with the groove.

8. The oil fume treatment device according to any one of claims 1 to 4, wherein The fume treatment device further includes a smoke concentration detection component, which is configured to detect the smoke concentration near the first air inlet (112) and is electrically connected to the electromagnetic drive component (31).

9. The oil fume processing device according to claim 8, characterized in that, The smoke hood (11) is provided with at least two first air inlets (112), and each first air inlet (112) is respectively provided with the baffle (20) and the electromagnetic drive assembly (31); The smoke concentration detection component includes at least two smoke concentration detectors (40), each of which detects the smoke concentration near a first air inlet (112) and is electrically connected to the corresponding electromagnetic drive component (31).

10. The oil fume treatment device according to any one of claims 1 to 4, wherein The smoke collection chamber (113) also has a second air inlet (111), and there are two first air inlets (112), with the two first air inlets (112) respectively located on both sides of the second air inlet (111).

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