Smoke collecting device and integrated cooker

Abstract

The invention discloses a smoke collecting device which comprises a smoke collecting shell with a smoke inlet, a turning plate for sealing the smoke inlet, at least one four-connecting-rod assembly and a driving mechanism for providing driving force for the turning plate. The four-connecting-rod assembly is used for guiding the turning plate to move when the driving mechanism provides driving force, the moving track of the turning plate is divided into lifting movement and rotation, so that the turning plate is sequentially adjusted from the initial state of closing the smoke inlet to the first working state, a gap is formed between the upper edge of the turning plate and the upper edge of the smoke inlet, and an upper smoke inlet channel is formed; in the second working state, gaps are formed between the upper edge and the lower edge of the turning plate and the upper edge and the lower edge of the smoke inlet respectively, and an upper smoke inlet channel and a lower smoke inlet channel are formed at the same time; and in the third working state, the turning plate completely exposes the smoke inlet. The invention further discloses the integrated cooker. The smoke collecting device has the beneficial effect that the adaptability of the smoke collecting device to different cooking modes is improved.

Description

Technical Field

[0001] The present invention relates to a smoke collecting device and an integrated stove, belonging to the technical field of kitchen appliances. Background Art

[0002] As the core equipment of modern kitchens, integrated stoves usually adopt a lower-mounted fan system to provide negative pressure power, and suck the cooking fumes generated during cooking through a smoke collecting device (host computer) and divert them to a purification module. The smoke collecting device is provided with a smoke inlet, and a movable flap (baffle) is arranged at the smoke inlet and driven by a driving mechanism. The flap, as a dynamic adjustment component, is used to control the opening and closing of the smoke inlet. However, the flap is mostly simplified to a single-degree-of-freedom opening and closing structure - only switching between fully open and fully closed, ignoring the diverse needs of actual cooking scenarios, resulting in poor adaptability of the smoke collecting device to cooking modes. Summary of the Invention

[0003] The purpose of the present invention is to provide a smoke collecting device and an integrated stove, which improve the adaptability of the smoke collecting device to different cooking modes.

[0004] The present invention is realized through the following technical solutions.

[0005] A smoke collecting device includes a smoke collecting housing having a smoke inlet, a flap closing the smoke inlet, at least one four-bar linkage assembly arranged in the smoke collecting housing and connected to the flap, and a driving mechanism providing driving force to the flap;

[0006] The four-bar linkage assembly is used to guide the movement of the flap when the driving mechanism provides driving force. The movement trajectory of the flap is decomposed into synchronous lifting movement and rotation. And the rotation of the flap first rotates in the direction away from the front plate of the smoke collecting housing along its upper edge, and then rotates in the direction close to the front plate of the smoke collecting housing along its upper edge, and makes the flap adjust from the initial state of closing the smoke inlet to:

[0007] The first working state, there is a gap between the upper edge of the flap and the upper edge of the smoke inlet, and an upper smoke inlet channel is formed;

[0008] The second working state, there are gaps between the upper edge and the lower edge of the flap and the upper edge and the lower edge of the smoke inlet respectively, and an upper smoke inlet channel and a lower smoke inlet channel are formed simultaneously;

[0009] The third working state, the flap completely exposes the smoke inlet.

[0010] As a further improvement of the present invention, the front plate of the smoke collecting housing includes a lower part of the front plate and an upper part of the front plate; the upper part of the front plate is inclined backward from its lower edge to its upper edge, and the smoke inlet is arranged on the upper part of the front plate or between the lower part of the front plate and the upper part of the front plate; the lower part of the front plate is arranged vertically and forms a first flow guiding surface for guiding the oil fume to flow to the smoke inlet.

[0011] As a further improvement of the present invention, the front plate has an extension plate extending from the upper edge of the lower part of the front plate along an upward and backward direction to the lower edge of the smoke inlet, and the extension plate forms a third flow guiding surface.

[0012] As a further improvement of the present invention, in any state between the initial state and the third working state, the flap is located behind the plane of the lower part of the front plate.

[0013] As a further improvement of the present invention, an air duct is formed inside the flap, and upper through openings and lower through openings are respectively formed at the upper edge and the lower edge of the flap.

[0014] As a further improvement of the present invention, the opening size of the lower through opening is larger than the opening size of the upper through opening.

[0015] As a further improvement of the present invention, the four-link assembly includes a flap connection seat connected to the back of the flap, a housing connection seat connected inside the smoke collecting housing, a first link and a second link respectively and simultaneously rotatably connecting the flap connection seat and the housing connection seat; the distance between the rotation connection points of the first link on the flap connection seat and on the housing connection seat is less than the distance between the rotation connection points of the second link on the flap connection seat and on the housing connection seat; the positions of the rotation connection points of the first link on the flap connection seat and the housing connection seat are respectively higher than the positions of the rotation connection points of the second link on both of them.

[0016] As a further improvement of the present invention, the first link and the second link are respectively rotatably connected to the left and right side parts of the housing connection seat.

[0017] As a further improvement of the present invention, the flap connection seat includes two flap connection split seats arranged at intervals left and right, and the housing connection seat includes two housing connection split seats arranged at intervals left and right; the first link is respectively rotatably connected to one of the flap connection split seats and one of the housing connection split seats, and the second link is respectively rotatably connected to the other flap connection split seat and the other housing connection split seat.

[0018] As a further improvement of the present invention, the driving mechanism includes a push rod motor rotatably connected inside the smoke collecting housing and a push rod connecting seat connected to the back surface of the flap, and the push rod of the push rod motor is rotatably connected to the push rod connecting seat.

[0019] As a further improvement of the present invention, a synchronizing rod extending in the left-right direction is provided inside the smoke collecting housing, and the first link or the second link of the four-link assembly serves as a connecting rod and is connected to the synchronizing rod.

[0020] As a further improvement of the present invention, the driving mechanism includes a push rod motor rotatably connected inside the smoke collecting housing and a push rod connecting seat connected to the synchronizing rod, and the push rod of the push rod motor is rotatably connected to the push rod connecting seat.

[0021] As a further improvement of the present invention, a synchronizing rod reinforcement seat is provided inside the smoke collecting housing, the push rod connecting seat is rotatably connected to the synchronizing rod reinforcement seat, and the rotation axis of the push rod connecting seat on the synchronizing rod reinforcement seat is coaxial with the rotation axis of the connecting rod on the housing connecting seat.

[0022] As a further improvement of the present invention, a smoke baffle extending forward is connected to the upper edge of the upper part of the front plate for blocking the rising cooking fumes.

[0023] As a further improvement of the present invention, the upper edge of the smoke inlet is spaced apart from the upper edge of the upper part of the front plate, so that the part of the upper part of the front plate between its upper edge and the upper edge of the smoke inlet forms a second flow guiding surface for guiding the cooking fumes blocked by the smoke baffle to flow to the smoke inlet.

[0024] As a further improvement of the present invention, when the flap is in the third working state, it fits on the second flow guiding surface.

[0025] As a further improvement of the present invention, the leading edge of the smoke baffle is located within the projection range of the smoke inlet along its opening direction, so as to improve the capturing force of the smoke inlet on the cooking fumes at the leading edge of the smoke baffle when the flap is in the third working state.

[0026] As a further improvement of the present invention, a sealing plate is provided inside the smoke collecting housing, the sealing plate and the flap define a closed space inside the smoke collecting housing, and the four-link assembly is located in the closed space; the sealing plate is provided with a relief groove allowing the first link and the second link to extend out, and a blocking piece is provided on the back surface of the flap below the relief groove, and during the process of adjusting the state of the flap closing the smoke inlet to the third working state, the blocking piece gradually approaches the sealing plate and closes the relief groove.

[0027] An integrated cooking stove includes the smoke collecting device.

[0028] Advantages of the present invention:

[0029] In the first working state, an upward smoke inlet channel is formed, which is suitable for the steaming mode. Since the height of the cookware is relatively high in the steaming scenario, such as a steamer, the oil fume or steam mainly rises vertically after being heated. The gap above the flap can directly align with the movement direction of the upward airflow, avoiding the dispersion of the airflow caused by lateral smoke suction and reducing the ineffective air inlet area, so that the suction force acts concentratedly on the steam and oil fume at a high position.

[0030] In the second working state, an upward smoke inlet channel and a downward smoke inlet channel are formed simultaneously. This state is applicable to the scenario where two stoves work simultaneously. The upward smoke inlet channel vertically captures the steam from the high cookware, while the downward smoke inlet channel laterally captures the diffused oil fume generated by the low frying pan.

[0031] In the third working state, the smoke inlet is completely exposed, and the entire cross-section of the smoke inlet is open, forming the largest air inlet area. This state is suitable for the frying mode and adapts to the characteristics of a large amount of oil fume and a wide diffusion range in the frying mode. The completely open smoke inlet can capture both the vertically rising oil fume and the smoke diffusing in all directions at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following will describe in detail the preferred embodiments of the present invention with the help of the drawings to facilitate understanding of the purpose and advantages of the present invention, where:

[0033] Figure 1 is a schematic structural diagram of the smoke collecting device;

[0034] Figure 2 is a schematic diagram of the movement trajectories of the upper edge and the lower edge of the flap;

[0035] Figure 3 is a side view schematic diagram of the smoke collecting device in the first working state;

[0036] Figure 4 is a side view schematic diagram of the smoke collecting device in the second working state;

[0037] Figure 5 is a side view schematic diagram of the smoke collecting device in the third working state;

[0038] Figure 6 is a schematic diagram of the cooking scenario of the smoke collecting device in the first working state, the second working state, and the third working state;

[0039] Figure 7 is a schematic structural diagram of the flap;

[0040] Figure 8 is a cross-sectional view schematic diagram of the flap;

[0041] Figure 9Schematic diagram of the four-bar linkage structure and the drive mechanism in one embodiment;

[0042] Figure 10 Side view schematic diagram of the four-bar linkage structure when the length of the first link is less than that of the second link;

[0043] Figure 11 Side view schematic diagram of the four-bar linkage structure when the length of the first link is equal to that of the second link;

[0044] Figure 12 Schematic diagram of the four-bar linkage structure when connected to the synchronizing rod;

[0045] Figure 13 Schematic diagram of the four-bar linkage structure when it is a split structure;

[0046] Figure 14 Internal structure schematic diagram of the smoke collecting housing;

[0047] Figure 15 Schematic diagram when the baffle does not enclose the avoidance groove;

[0048] Figure 16 Schematic diagram when the baffle encloses the avoidance groove. Detailed implementation manners

[0049] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0050] In this specification, the orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or likely to be mentioned are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may accordingly change depending on their different positions and usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0051] Embodiment 1:

[0052] A smoke collecting device, which is used as a host computer in an integrated stove. Referring to Figures 1 - 16 , it includes a smoke collecting housing 1, a flap 2, at least one four-bar linkage assembly, and a drive mechanism. Among them, a smoke inlet 11 is provided on the front plate 12 of the smoke collecting housing 1. The flap 2 corresponds to the smoke inlet 11 and closes the smoke inlet 11 in the non-use state. The four-bar linkage assembly is arranged in the smoke collecting housing 1 and is connected to the flap 2. The drive mechanism is used to provide power to the flap 2.

[0053] The four-bar linkage assembly is used to guide the movement of the flap 2 when the driving mechanism provides power. The movement trajectory of the flap 2 is divided into synchronous lifting movement and rotation. And the rotation of the flap 2 first rotates along the direction away from the front plate 12 of the smoke collecting housing 1 at its upper edge, and then rotates along the direction close to the front plate 12 of the smoke collecting housing 1 at its upper edge. The upper edge movement trajectory c1 and the lower edge movement trajectory c2 of the flap 2 are as Figure 2 shown. It should be noted that the lifting movement of the flap 2 refers to the state change in which the horizontal position of the flap 2 is gradually raised, rather than the vertical upward movement; the rotation of the flap 2 refers to the change state in which the inclination of the flap 2 is gradually changed. The movement trajectory of the flap 2 enables the flap 2 to gradually adjust from the state of closing the smoke inlet 11 to the first working state, the second working state, and the third working state.

[0054] Refer to Figures 3 - 6 , in the first working state, there is a gap between the upper edge of the flap 2 and the upper edge of the smoke inlet 11, and an upper smoke inlet channel h1 is formed; in the second working state, there are gaps between the upper edge and the lower edge of the flap 2 and the upper edge and the lower edge of the smoke inlet 11 respectively, and an upper smoke inlet channel h1 and a lower smoke inlet channel h2 are formed simultaneously; in the third working state, the flap 2 completely exposes the smoke inlet 11.

[0055] In the first working state, a stable upper smoke inlet channel h1 is formed between the upper edge of the flap 2 and the upper edge of the smoke inlet 11. At this time, only the top gap is reserved on the flap 2, and the lower edge still contacts the lower edge of the smoke inlet 11. This state is suitable for the steaming mode. Since the height of the cookware is relatively high in the steaming scenario, such as a steamer, the oil fume or steam mainly rises vertically after being heated. The gap above the flap 2 can directly align with the movement direction of the rising air flow, avoiding the dispersion of the air flow caused by lateral smoking, and reducing the ineffective air inlet area, so that the suction force acts concentratedly on the steam and oil fume at a high place; at the same time, the inclination angle formed by the flap 2 during the rotation process makes the upper smoke inlet channel h1 wider at the front and narrower at the back, and uses the Venturi effect to accelerate the air flow and thus improve the discharge speed.

[0056] In the second working state, the flap 2 still partially blocks the smoke inlet 11, but there are gaps between the upper edge and the lower edge of the flap 2 and the smoke inlet 11 at the same time, and an upper smoke inlet channel h1 and a lower smoke inlet channel h2 are formed simultaneously. This state is applicable to the scenario where two stoves work simultaneously, such as steaming on one side and stir-frying on the other side. The upper smoke inlet channel h1 vertically captures the steam of the high cookware, and the lower smoke inlet channel h2 laterally captures the diffused oil fume generated by the low wok; the forward and reverse swinging of the four-bar linkage assembly makes the flap 2 change the inclination direction during the lifting process, and the cross-sectional ratio of the upper smoke inlet channel h1 and the lower smoke inlet channel h2 is dynamically adjusted accordingly, so as to balance the suction efficiency of the oil fume and steam at different positions. The middle blocking part of the flap 2 can physically isolate the air flow in the upper and lower channels, reduce the mixing interference between the steaming steam and the stir-frying oil fume, and avoid the decrease in the smoking efficiency caused by the air flow counteracting.

[0057] In the third working state, the flap 2 completely exposes the smoke inlet 11. At this time, the flap 2 no longer blocks any area, and the smoke inlet 11 is fully open in cross-section, forming the largest air intake area. This state is suitable for the frying mode, adapting to the characteristics of large oil fume volume and wide diffusion range in the frying mode. The fully open smoke inlet 11 can capture both the vertically rising oil fume and the smoke diffusing in all directions at the same time. In addition, after the flap 2 is fully lifted, it is in a high position, and its own structure can act as a deflector to further improve the smoking effect.

[0058] The four-bar linkage assembly of this embodiment realizes the flap 2 through kinematic pair constraints to avoid dead points of motion.

[0059] In this embodiment, the front plate 12 of the smoke collecting housing 1 includes a lower front plate 121 and an upper front plate 122. The upper front plate 122 is inclined backward from its lower edge to its upper edge. The smoke inlet 11 is arranged on the upper front plate 122 or between the lower front plate 12 and the upper front plate 122. The lower front plate 121 is arranged vertically and forms a first deflector surface s1 for guiding the oil fume to flow to the smoke inlet 11.

[0060] It should be noted that the definition of directions in the specific implementation is as follows: the direction facing the user of the smoke collecting housing 1 is defined as the front, the direction facing away from the user of the smoke collecting housing 1 is the rear, and the directions on both sides of the smoke collecting housing 1 are the left and right directions.

[0061] The lower front plate 121 remains vertical to form the first deflector surface s1, which can force the diffused oil fume splashing from the side of the cookware in the frying mode to the smoke inlet 11. When the oil fume hits the vertical lower front plate 121, the oil fume is forced to change direction and flow upward along the first deflector surface s1, forming a synergistic effect with the negative pressure area of the smoke inlet 11 to effectively inhibit the escape of oil fume outward.

[0062] In this embodiment, with reference to Figure 1 and Figure 2 , the front plate 12 has an extension plate 124. The extension plate 124 extends from the upper edge of the lower front plate 121 along the upward and backward direction to the lower edge of the smoke inlet 11. The extension plate 124 and the lower front plate 121 are of an integral structure, and the extension plate 124 forms a third deflector surface s3. The oil fume flows upward along the first deflector surface s1, then flows upward and backward along the third deflector surface s3 to the smoke inlet 11, and flows into the smoke collecting housing 1 through the smoke inlet 11 in the second working state and the third working state.

[0063] In this embodiment, in any state between the initial state and the third working state of the flap 2, it is always located behind the plane of the lower part 121 of the front plate, so that a safe distance is maintained between the flap 2 and the cookware, avoiding the collision between the flap 2 and the cookware during the movement of the flap 2, especially for cookware with a relatively high height such as a steamer in the steaming mode. In addition, it should be noted that the flap 2 does not intrude into the cooking area in front of the lower part 121 of the front plate during the whole movement process, which can avoid the phenomenon of oil fume airflow peeling caused by the partial convexity of the flap 2. No matter what state the flap 2 is in, the vertical air guiding surface of the lower part 121 of the front plate can maintain the complete air guiding function, ensuring that the oil fume directly enters the smoke inlet 11 along the air guiding surface after being generated from the cookware, and eliminating the oil fume turbulence area caused by the sudden change of the position of the flap 2.

[0064] In this embodiment, a smoke baffle 123 extending forward is connected to the upper edge of the upper part 122 of the front plate for blocking the rising oil fume. The smoke baffle 123 extends forward from the upper edge of the upper part 122 of the front plate to form a physical barrier protruding outside the smoke collecting housing 1. When the oil fume drifts upward, the smoke baffle 123 directly intercepts its rising path, forcing the oil fume to change its movement direction after contacting the smoke baffle 123. Since the smoke baffle 123 extends forward, its coverage area exceeds the vertical projection area directly above the cookware, which can effectively block the oil fume diffusing from the side and rear of the cookware from escaping outward; at the same time, the smoke baffle 123 makes the blocked oil fume fall back along the lower surface of the smoke baffle 123 towards the smoke collecting housing 1 under the action of inertia, initially guiding the oil fume to gather towards the area of the smoke inlet 11 and avoiding the disordered diffusion of the oil fume outside the smoke collecting device.

[0065] In addition, the smoke baffle 123 can also serve as a large-area storage platform, and users can place kitchen utensils on the smoke baffle 123 to improve the utilization rate of the smoke baffle 123.

[0066] In this embodiment, a distance sensor is provided on the bottom surface of the smoke baffle 123. The distance sensor can be set as a sensor of types such as optical, infrared, ultrasonic, etc., for detecting the height of the cookware, so as to give a judgment basis for adjusting the flap 2 to the first working state, the second working state or the third working state.

[0067] In this embodiment, the upper edge of the smoke inlet 11 is spaced apart from the upper edge of the upper part 122 of the front plate, so that the part of the upper part 122 of the front plate between its upper edge and the upper edge of the smoke inlet 11 forms a second diversion surface s2, and the second diversion surface s2 is used to guide the oil fume blocked by the smoke baffle 123 to flow to the smoke inlet 11. In the first working state and the second working state, the second diversion surface s2 plays a role in diverting oil fume and steam: when the steam or oil fume rises vertically, the smoke baffle 123 will directly intercept the steam or oil fume. After the blocked steam or oil fume contacts the smoke baffle 123, it moves towards the inside of the smoke collecting device along the lower surface of the smoke baffle 123 under the influence of negative pressure suction. The second diversion surface s2 then smoothly guides the steam or oil fume from the root of the smoke baffle 123 to the upper smoke inlet channel h1 through its continuous surface, thus avoiding the generation of eddies or escape of steam or oil fume due to the interruption of the path. At the same time, through the geometric constraint of the second diversion surface s2, the steam is more concentrated to enter the smoke collecting housing 1 through the upper smoke inlet channel h1, reducing the sudden change of the flow channel caused by partial occlusion of the flap 2, and finally improving the directional capture efficiency of the vertically rising steam or oil fume.

[0068] In this embodiment, when the flap 2 is in the third working state, it fits on the second diversion surface s2, that is, the front surface of the flap 2 plays the role of the second diversion surface s2, and is used to guide the oil fume blocked by the smoke baffle 123 along the front surface of the flap 2 to the smoke inlet 11.

[0069] In this embodiment, the leading edge of the smoke baffle 123 is within the projection range of the smoke inlet 11 along its opening direction. In the third working state, the leading edge of the smoke baffle 123 is directly in the core area of the negative pressure action of the smoke inlet 11. When the oil fume diffuses to this position, under the dual action of negative pressure suction and the block of the smoke baffle 123, it is forced to flow towards the smoke inlet 11 along the lower surface of the smoke baffle 123, thus avoiding the formation of a "negative pressure blind area" along the area of the smoke baffle 123, resulting in the lateral escape of oil fume bypassing the smoke baffle 123. Therefore, when the flap 2 is in the third working state, the capture force of the smoke inlet 11 for the oil fume at the leading edge of the smoke baffle 123 is improved, and the capture efficiency of the oil fume diffusing from the side front of the cookware is significantly enhanced, reducing edge escape.

[0070] In this embodiment, referring to Figure 7 and Figure 8, an air duct 21 is formed inside the flap 2. The air duct 21 forms an upper vent 21a and a lower vent 21b at the upper edge and the lower edge of the flap 2 respectively. The air duct 21 basically occupies the internal space of the flap 2, that is, the left and right sides of the air duct 21 extend to the left and right sides of the flap 2. When the flap 2 is in the second working state, the upper vent 21a and the lower vent 21b of the air duct 21 are in a connected state. Part of the vertically rising cooking fumes directly enter the smoke collecting housing 1 through the upper smoke inlet channel h1, and the other part of the cooking fumes enter the air duct 21 from the upper vent 21a of the flap 2. After being guided by the internal flow path to the lower vent 21b, they are then sucked through the lower smoke inlet channel h2, forming a dual-path collaborative trapping mechanism for the cooking fumes, making the flap 2 itself become a part of the air flow path. Without adding an additional fan, the upper cooking fumes that might otherwise escape are actively guided to the lower smoke inlet channel h2 through the structure of the flap 2, expanding the effective smoking range; when the resistance of the upper smoke inlet channel h1 increases, the air duct 21 provides a second low-resistance path for the upper cooking fumes through the lower smoke inlet channel h2, avoiding air flow congestion. At the same time, the continuous suction of the cooking fumes in the air duct 21 by the lower smoke inlet channel h2 will form an additional negative pressure at the upper vent 21a, reversely enhancing the suction of the upper smoke inlet channel h1, forming a negative pressure complementary effect between the upper and lower channels, and solving the problem of uneven suction caused by flow competition in the dual channels.

[0071] In this embodiment, the opening size of the lower vent 21b is larger than that of the upper vent 21a. In the second working state, the setting that the opening of the lower vent 21b is larger than that of the upper vent 21a optimizes the air flow efficiency through differential flow distribution: the larger lower vent 21b reduces the outlet resistance of the air duct 21, enabling more air flow to be smoothly sucked through the lower smoke inlet channel h2, avoiding turbulent losses caused by sudden changes in the cross-section of the lower channel; at the same time, the smaller upper vent 21a accelerates the local air flow through the Venturi effect, forming a higher negative pressure at the top of the upper smoke inlet channel h1 and enhancing the adsorption force on the vertically rising steam; the size difference between the two forces the cooking fumes to form a pressure gradient from top to bottom in the air duct 21, using the high-flow advantage of the lower channel to compensate for the local suction deficiency of the upper channel and achieving self-balancing of the dual-channel flow.

[0072] In this embodiment, the air duct 21 includes an upper air duct 211 and a lower air duct 212. The upper vent 21a is located at the top of the upper air duct 21, and the lower vent 21b is located at the bottom of the lower air duct 21. The width of the upper air duct 211 is smaller than that of the lower air duct 212. The narrower upper air duct 211 accelerates the air flow through cross-section contraction, forming a high negative pressure core area at the upper vent 21a, specifically enhancing the adsorption force on the vertically rising steam; the wider lower air duct 212 reduces the flow resistance through a large cross-section, avoiding system pressure imbalance caused by the high flow velocity of the narrow upper air duct 21.

[0073] In this embodiment, the flap 2 includes a base plate 22 and a panel 23 connected to the front surface of the base plate 22. The size of the panel 23 matches that of the smoke inlet 11 and is used to close the smoke inlet 11. The base plate 22 is connected to a four-bar linkage assembly, and the air duct 21 is formed within the base plate 22. The thickness of the base plate 22 is greater than that of the panel 23, and its size is slightly smaller than that of the panel 23, so as to effectively prevent the base plate 22 from colliding with the upper and lower edges of the smoke inlet 11 during movement. The panel 23 can specifically be set as a glass plate and is fixedly bonded to the front surface of the base plate 22.

[0074] In this embodiment, referring to Figure 9 and Figure 10 , for the four-bar linkage assembly, the four-bar linkage assembly includes a flap connecting seat 33, a housing connecting seat 34, a first link 31, and a second link 32. Among them, the flap connecting seat 33 is connected to the back surface of the flap 2, the housing connecting seat 34 is connected to the rear plate within the smoke collecting housing 1, and the first link 31 and the second link 32 are respectively rotatably connected to the flap connecting seat 33 and the housing connecting seat 34. The distance between the rotational connection points of the first link 31 at the flap connecting seat 33 and at the housing connecting seat 34 is less than the distance between the rotational connection points of the second link 32 at the flap connecting seat 33 and at the housing connecting seat 34. Since both the first link 31 and the second link 31 are straight rod structures, the length of the first link 31 is less than that of the second link 32, that is, the rotational radius of the first link 31 is less than that of the second link 32. The rotational connection positions of the first link 31 at the flap connecting seat 33 and the housing connecting seat 34 are respectively higher than those of the second link 32 at the two positions, that is, the first link 31 and the second link 32 are arranged vertically. Based on the mutual positional relationship and length relationship between the first link 31 and the second link 32, the composite movement trajectory of the flap 2 is realized through kinematic pair constraints.

[0075] There is another embodiment of the four-bar linkage assembly. Referring to Figure 11, Similarly, the four-bar linkage assembly includes a flap connecting seat 33, a housing connecting seat 34, a first link 31, and a second link 32. The difference is that the distance between the rotational connection points of the first link 31 on the flap connecting seat 33 and on the housing connecting seat 34 is the same as the distance between the rotational connection points of the second link 32 on the flap connecting seat 33 and on the housing connecting seat 34. Since both the first link 31 and the second link 31 are straight rod structures, the lengths of the first link 31 and the second link 32 are the same, which means that the rotational radii of the first link 31 and the second link 32 are the same. In this embodiment, during the lifting movement of the flap 2, it does not rotate. Therefore, the flap 2 only has the second working state and the third working state, lacking the first working state. Although this embodiment lacks the first working state, because the lengths of the first link 31 and the second link 32 are the same, the parts can be made universal, thereby effectively reducing costs.

[0076] For the four-bar linkage assembly, the first link 31 and the second link 32 are arranged at intervals in the left-right direction. On the one hand, it can effectively avoid the situation of mutual interference and collision between the first link 31 and the second link 32 during rotation; on the other hand, it makes the acting torques of the first link 31 and the second link 32 on the flap 2 form complementary balance in the horizontal plane, suppressing the lateral yaw of the flap 2 during the lifting movement - rotation process and ensuring the trajectory accuracy.

[0077] In one embodiment, referring to Figure 9 , the first link 31 and the second link 32 are respectively rotationally connected to the left and right sides of the housing connecting seat 34, so that the first link 31 and the second link 32 are spaced apart from each other in the left-right direction. By placing the first link 31 and the second link 32 on the left and right two sides of the housing connecting seat 34 respectively, the acting forces on the housing connecting seat 34 are kept balanced in the left-right direction, effectively avoiding local stress concentration caused by torque superposition, reducing the risk of structural deformation, and improving the long-term operation stability and fatigue resistance.

[0078] In another embodiment, referring to Figure 13, the flap connecting seat 33 includes two flap connecting split seats 331 arranged at intervals left and right, and the housing connecting seat 34 includes two housing connecting split seats 341 arranged at intervals left and right. The interval distances between the two flap connecting split seats 331 and the two housing connecting split seats 341 are the same and correspond one by one. The first connecting rod 31 is respectively rotatably connected to one of the flap connecting split seats 331 and one of the housing connecting split seats 341, and the second connecting rod 32 is respectively rotatably connected to the other flap connecting split seat 331 and the other housing connecting split seat 341. By respectively connecting the first connecting rod 31 and the second connecting rod 32 to the flap connecting split seats 331 and the housing connecting split seats 341 arranged at intervals left and right, the distance between the two connecting rods in the horizontal direction is significantly increased, forming a wider force arm support structure, so that during the lifting and swinging process of the flap 2, the driving force action points of the first connecting rod 31 and the second connecting rod 32 are dispersed along the left and right directions on the back of the flap 2, thereby being able to avoid the skew and jitter problems that occur during the movement of the flap 2, and then improving the accuracy of the mechanical action.

[0079] In one embodiment, referring to Figure 9 , the driving mechanism includes a push rod motor 41 and a push rod connecting seat 42. Among them, the push rod motor 41 is rotatably connected in the smoke collecting housing 1 through a support, the push rod connecting seat 42 is connected to the back of the flap 2, and the push rod 421 of the push rod motor 41 is rotatably connected to the push rod connecting seat 42. The push rod connecting seat 42 is specifically connected to the middle area on the back of the flap 2, and there are two four-link assemblies, which are respectively located on the left and right sides of the push rod connecting seat 42 and are symmetrically arranged with respect to the push rod connecting seat 42.

[0080] In another embodiment, referring to Figure 12 , a synchronous rod 35 extending in the left and right direction is arranged in the smoke collecting housing 1, and the first two rods or the second connecting rod 32 of the four-link assembly serves as a connecting rod and is connected to the synchronous rod 35. By adding a transverse synchronous rod 35 and connecting it to the four-link assembly, it is possible to force the first connecting rod 31 and the second connecting rod 32 of the four-link assembly to rotate synchronously during the movement of the flap 2, eliminating the problems of distortion and asynchronous swinging of the flap 2 caused by unilateral driving force deviation or uneven load, ensuring that the flap 2 always maintains a horizontal posture during the lifting and forward and reverse swinging processes, thereby avoiding the occurrence of skew of the flap 2; at the same time, the synchronous rod 35 serves as a transverse strengthening beam and together with the four-link assembly constitutes a space truss structure, significantly improving the bending stiffness of the overall mechanism and extending the service life.

[0081] In this embodiment, the drive mechanism includes a push rod motor 41 and a push rod connecting seat 42. The push rod motor 41 is rotatably connected in the smoke collecting housing 1 through a support, the push rod connecting seat 42 is connected to the synchronizing rod 35, and the push rod 421 of the push rod motor 41 is rotatably connected to the push rod connecting seat 42. The connection between the push rod connecting seat 42 and the synchronizing rod 35 can ensure that the driving force of the push rod motor 41 is transmitted to each four-bar linkage assembly simultaneously and equally through the lateral rigid transmission characteristic of the synchronizing rod 35, completely eliminating the problem of asynchronous movement of the flap 2 caused by the lag or deviation of the unilateral driving force.

[0082] In this embodiment, a synchronizing rod reinforcing seat 36 is provided in the smoke collecting housing 1. The push rod connecting seat 42 is rotatably connected to the synchronizing rod reinforcing seat 36, and the rotation axis of the push rod connecting seat 42 on the synchronizing rod reinforcing seat 36 is coaxial with the rotation axis of the connecting rod on the housing connecting seat 34. By making the rotation axis of the push rod connecting seat 42 coaxial with the rotation axis of the connecting rod on the housing connecting seat 34 of the connecting rod, a system with consistent axial force transmission is constructed: when the driving force is transmitted from the push rod motor 41 to the four-bar linkage assembly through the synchronizing rod reinforcing seat 36, the coaxial design ensures that the acting direction of the push rod 421 is completely coincident with the force arm direction of the four-bar linkage, eliminating the additional bending moment caused by the axis misalignment; at the same time, the synchronizing rod reinforcing seat 36 provides additional rigid support for the synchronizing rod 35, avoiding the lateral bending deformation of the synchronizing rod 35 due to cantilever stress, ensuring the lossless transmission of the driving force to the bilateral four-bar linkage assemblies, and preventing its plastic deformation caused by fatigue during high-frequency reciprocating motion, ensuring the long-term stability of the movement track of the flap 2.

[0083] In this embodiment, referring to Figure 14 , a sealing plate 13 is provided in the smoke collecting housing 1. The sealing plate 13 and the flap 2 define a closed space in the smoke collecting housing 1, and the four-bar linkage assembly is located in the closed space; an avoidance groove 131 allowing the first link 31 and the second link 32 to extend is provided on the sealing plate 13, and a retaining piece 132 is provided on the back surface of the flap 2 below the avoidance groove 131. During the process of adjusting the state of the flap 2 closing the air inlet 11 to the third working state, the retaining piece 132 gradually approaches the sealing plate 13 and closes the avoidance groove 131.

[0084] Referring to Figure 15 and Figure 16, the four-bar linkage assembly is accommodated in the enclosed space formed by the sealing plate 13 and the flap 2, and the baffle 132 is used to dynamically seal the avoidance groove 131 during the movement of the flap 2, so as to achieve the isolation of the oil fume path and the protection of the mechanical structure. When the oil fume enters the smoke collection housing 1, the sealing plate 13 physically isolates the oil fume from penetrating into the enclosed space. The avoidance groove 131 is gradually covered by the baffle 132 when the flap 2 moves, forming a dynamic sealing barrier. Especially when the flap 2 is fully opened to the second working state and the third working state, the baffle 132 seals the avoidance groove 131 to prevent the oil fume from entering the enclosed space through the notch and contacting the four-bar linkage assembly, placing the four-bar linkage assembly completely outside the oil fume path, avoiding the condensation and deposition of oil fume on the hinge points and the surface of the connecting rod to form oil scale from the source, significantly reducing the risk of mechanical jamming and extending the service life of the mechanism.

[0085] Embodiment 2:

[0086] An integrated range hood includes a smoke collection device, and the smoke collection device is as shown in Embodiment 1.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A smoke collecting device, characterized in that: It comprises a smoke collecting housing (1) having a smoke inlet (11), a flap (2) closing the smoke inlet (11), at least one four-bar linkage assembly arranged in the smoke collecting housing (1) and connected to the flap (2), and a driving mechanism providing driving force to the flap (2); The four-link assembly is used to guide the flap (2) to move when the driving mechanism provides a driving force, and the movement trajectory of the flap (2) is decomposed into synchronous lifting movement and rotation, and the flap (2) rotates first from its upper edge in a direction away from the front plate (12) of the smoke collecting shell (1), and then from its upper edge in a direction close to the front plate (12) of the smoke collecting shell (1), so that the flap (2) is adjusted from an initial state of closing the smoke inlet (11) to: In a first working state, a gap exists between the upper edge of the flap (2) and the upper edge of the smoke inlet (11), and an upper smoke inlet channel (h1) is formed; In the second working state, the upper edge and the lower edge of the flap (2) respectively have gaps with the upper edge and the lower edge of the smoke inlet (11), and simultaneously form an upper smoke inlet channel (h1) and a lower smoke inlet channel (h2); In the third working state, the flap (2) completely exposes the smoke inlet (11).

2. The smoke collecting device according to claim 1, characterized in that: The front plate (12) of the smoke collecting housing (1) comprises a front plate lower portion (121) and a front plate upper portion (122); the front plate upper portion (122) is arranged to be tilted backward from its lower edge to its upper edge, and the smoke inlet (11) is arranged on the front plate upper portion (122) or between the front plate lower portion (121) and the front plate upper portion (122); the front plate lower portion (121) is arranged vertically and forms a first guide surface (s1) for guiding the oil smoke to flow to the smoke inlet (11).

3. The smoke collecting device according to claim 2, characterized in that: The front plate (12) has an extension plate (124) extending from the upper edge of the lower part (121) of the front plate to the lower edge of the smoke inlet (11) in an upward and rearward direction, and the extension plate (124) forms a third guide surface (s3).

4. The smoke collecting device according to claim 2, characterized in that: The flap (2) is located behind the plane to which the lower part (121) of the front plate belongs in any state between the initial state and the third working state.

5. The smoke collecting device according to claim 1, characterized in that: An air duct (21) is formed inside the flap (2), and the air duct (21) forms an upper opening (21a) and a lower opening (21b) at the upper edge and the lower edge of the flap (2), respectively.

6. The smoke collecting device according to claim 5, characterized in that: The opening size of the lower through opening (21b) is larger than the opening size of the upper through opening (21a).

7. The smoke collecting device according to claim 1, characterized in that: The four-link assembly comprises a flap connection seat (33) connected to the back of the flap (2), a shell connection seat (34) connected inside the smoke collecting shell (1), a first link (31) and a second link (32) which are respectively and simultaneously rotatably connected to the flap connection seat (33) and the shell connection seat (34); the distance between the rotation connection point of the first link (31) at the flap connection seat (33) and the rotation connection point at the shell connection seat (34) is smaller than the distance between the rotation connection point of the second link (32) at the flap connection seat (33) and the rotation connection point at the shell connection seat (34); the positions of the rotation connection points of the first link (31) at the flap connection seat (33) and the shell connection seat (34) are respectively higher than the positions of the rotation connection points of the second link (32) at the two.

8. The smoke collecting device according to claim 7, characterized in that: The first connecting rod (31) and the second connecting rod (32) are rotatably connected to the left and right side portions of the housing connecting seat (34) respectively.

9. The smoke collecting device according to claim 7, characterized in that: The flap connection seat (33) comprises two flap connection split seats (331) spaced apart from each other on the left and right, and the shell connection seat (34) comprises two shell connection split seats (341) spaced apart from each other on the left and right; the first connecting rod (31) is rotatably connected to one of the flap connection split seats (331) and one of the shell connection split seats (341), and the second connecting rod (32) is rotatably connected to another flap connection split seat (331) and another shell connection split seat (341).

10. The smoke collecting device according to claim 7, characterized in that: The driving mechanism comprises a push rod motor (41) rotatably connected to the smoke collecting housing (1) and a push rod connecting seat (42) connected to the back of the flap (2); a push rod (421) of the push rod motor (41) is rotatably connected to the push rod connecting seat (42).

11. The smoke collecting device according to claim 7, characterized in that: A synchronization rod (35) extending in the left-right direction is arranged in the smoke collecting housing (1); the first connecting rod (31) or the second connecting rod (32) of the four-link assembly serves as a connecting rod and is connected to the synchronization rod (35).

12. The smoke collecting device according to claim 11, characterized in that: The driving mechanism comprises a push rod motor (41) rotatably connected to the smoke collecting housing (1) and a push rod connecting seat (42) connected to the synchronization rod (35); a push rod (421) of the push rod motor (41) is rotatably connected to the push rod connecting seat (42).

13. The smoke collecting device according to claim 12, characterized in that: A synchronization rod reinforcement seat (36) is arranged in the smoke collecting shell (1), the push rod connecting seat (42) is rotatably connected to the synchronization rod reinforcement seat (36), and the rotation axis of the push rod connecting seat (42) on the synchronization rod reinforcement seat (36) is coaxial with the rotation axis of the connecting rod on the shell connecting seat (34).

14. The smoke collecting device according to claim 7, characterized in that: A sealing plate (13) is arranged in the smoke collecting shell (1), and the sealing plate (13) and the flap (2) define a closed space in the smoke collecting shell (1), and the four-link assembly is located in the closed space; the sealing plate (13) is provided with an avoidance groove (131) for allowing the first link (31) and the second link (32) to extend, and the back of the flap (2) is provided with a baffle (132) located below the avoidance groove (131), and in the process of adjusting the state of the flap (2) closing the smoke inlet (11) to the third working state, the baffle (132) gradually approaches the sealing plate (13) and closes the avoidance groove (131).

15. The smoke collecting device according to claim 2, characterized in that: The upper edge of the upper portion (122) of the front plate is connected to a smoke shield (123) extending forward, and is used to shield rising oil smoke.

16. The smoke collecting device according to claim 15, characterized in that: The upper edge of the smoke inlet (11) and the upper edge of the front plate upper portion (122) are spaced apart, so that the portion of the front plate upper portion (122) between its upper edge and the upper edge of the smoke inlet (11) forms a second guide surface (s2) for guiding the oil smoke blocked by the smoke baffle (123) to flow to the smoke inlet (11).

17. The smoke collecting device according to claim 16, characterized in that: When the flap (2) is in the third working state, it is attached to the second flow guide surface (s2).

18. The smoke collecting device according to claim 15, characterized in that: The front edge of the smoke baffle (123) is located within the projection range of the smoke inlet (11) along its opening direction, and is used to increase the ability of the smoke inlet (11) to capture oil smoke at the front edge of the smoke baffle (123) when the flap (2) is in the third working state.

19. An integrated stove, characterized in that: Comprising the smoke collecting device according to any one of claims 1-18.

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