Control method of integrated cooker

Abstract

The invention discloses a control method of an integrated cooker, and the control method comprises the following steps: detecting the height of cookware corresponding to all furnace ends in an open state in a state that a fan device is opened, and comparing the height with a preset height; if the heights of all the cookware are larger than the preset height, the turning plate is controlled to be adjusted to a first working state; if the heights of all the cookware are smaller than the preset height, the turning plate is controlled to be adjusted to a third working state; and if the height of the at least one pot is smaller than the preset height and the height of the at least one pot is larger than the preset height, the turning plate is controlled to be adjusted to the second working state. The range hood has the advantages that by movably adjusting the turning plate, the range hood can have good smoking performance in various different cooking modes.

Description

Technical Field

[0001] The present invention relates to a control method for an integrated stove, belonging to the technical field of kitchen appliance control. Background Art

[0002] As a core device in a modern kitchen, an integrated stove usually adopts a lower-mounted fan system to provide negative pressure power, and sucks the cooking fumes generated during cooking into a purification module through a smoke collection device (host computer). The smoke collection 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 full opening and full closing, ignoring the diverse needs of actual cooking scenarios, resulting in poor adaptability of the smoke collection device to cooking modes. Summary of the Invention

[0003] The purpose of the present invention is to provide a control method for an integrated stove, which can have better smoke suction performance under various different cooking modes through the active adjustment of the flap.

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

[0005] A control method for an integrated stove, the integrated stove includes a smoke collection device configured as a host computer and a fan device configured as a slave computer, the smoke collection device includes a smoke collection housing having a smoke inlet, and a flap movably connected to the smoke collection housing;

[0006] The movement of the flap relative to the smoke inlet enables it to have an initial state of closing the smoke inlet, a first working state of forming an upper smoke inlet channel along the upper edge of the smoke inlet, a second working state of forming an upper smoke inlet channel and a lower smoke inlet channel along the upper edge and the lower edge of the smoke inlet respectively, and a third working state of completely exposing the smoke inlet;

[0007] The steps of the control method include:

[0008] When the fan device is in an on state, detect the height of the cookware corresponding to all the burners in an on state, and compare it with a preset height;

[0009] If the height of all cookware is greater than the preset height, control the flap to be adjusted to the first working state;

[0010] If the height of all cookware is less than the preset height, control the flap to be adjusted to the third working state;

[0011] If the height of at least one cookware is less than the preset height and the height of at least one cookware is greater than the preset height, control the flap to be adjusted to the second working state.

[0012] As a further improvement of the present invention, the preset height is not lower than the height of the lower edge of the smoke inlet.

[0013] As a further improvement of the present invention, before the blower device is turned on and the heights of the cookware corresponding to all the burners in the on state are detected, the flap (2) is first adjusted from the initial state to the preset state.

[0014] As a further improvement of the present invention, the preset state of the flap is configured as the third working state.

[0015] As a further improvement of the present invention, the heights of the cookware corresponding to all the burners in the on state are detected. If the height of the cookware remains unchanged within the preset time n, the state of the flap is adjusted. If the height of the cookware changes within the preset time n, the heights of the cookware corresponding to the burners in the on state are detected again.

[0016] As a further improvement of the present invention, the preset time is 3 - 10 s.

[0017] As a further improvement of the present invention, a smoke baffle extending forward is connected to the upper edge of the front plate of the smoke collecting housing for blocking the rising oil fumes; a plurality of distance sensors corresponding to each burner are arranged on the bottom surface of the smoke baffle for detecting the height of the cookware on the corresponding burner.

[0018] As a further improvement of the present invention, the smoke collecting device further includes at least one four - link assembly arranged in the smoke collecting housing and connected to the flap, and a driving mechanism for providing a driving force to the flap;

[0019] The four - link assembly is used to guide the movement of the flap when the driving mechanism provides a driving force. The movement track 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 by its upper edge, and then rotates in the direction close to the front plate of the smoke collecting housing by its upper edge, so that the flap is adjusted from the initial state of closing the smoke inlet to the first working state, the second working state and the third working state in sequence.

[0020] As a further improvement of the present invention, the four - link assembly includes a flap connecting seat connected to the back surface of the flap, a housing connecting seat connected in the smoke collecting housing, a first link and a second link respectively and simultaneously rotatably connecting the flap connecting seat and the housing connecting seat; the distance between the rotation connection points of the first link at the flap connecting seat and at the housing connecting seat is less than the distance between the rotation connection points of the second link at the flap connecting seat and at the housing connecting seat; the rotation connection positions of the first link at the flap connecting seat and the housing connecting seat are respectively higher than the rotation connection positions of the second link at both.

[0021] As a further improvement of the present invention, an air duct is formed inside the flap, and the air duct forms an upper opening and a lower opening at the upper edge and the lower edge of the flap respectively.

[0022] Beneficial effects of the present invention:

[0023] By real-time detection of the height of multi-burner pots and linkage adjustment of the flap status, precise smoke control that dynamically adapts to different cooking scenarios is achieved. This method can be used for steaming mode, stir-frying mode, and simultaneous steaming and stir-frying mode. This method significantly improves the oil fume capture efficiency and energy utilization of the integrated stove under complex cooking conditions through a multi-condition adaptive control strategy.

[0024] The first working state is suitable for the steaming mode. Since the height of the pot in the steaming scene is relatively high, such as a steamer, the oil smoke or steam will mainly rise vertically after being heated, avoiding the air flow dispersion caused by lateral smoke and reducing the ineffective air intake area, so that the suction force is concentrated on the steam and oil smoke at a high position;

[0025] The second working state is suitable for a variety of cooking methods, such as stir-frying on some burners and steaming on others. The upper smoke inlet channel captures the steam from tall pots vertically, while the lower smoke inlet channel captures the diffused oil smoke from short woks horizontally.

[0026] The third working state is suitable for the stir-fry mode. It is adapted to the characteristics of large amount of oil smoke and wide diffusion range in the stir-fry mode. The fully open smoke inlet is open in full cross-section to form the maximum air inlet area, so that the smoke inlet can capture the vertically rising oil smoke and the smoke diffusing to the surroundings at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0028] Figure 1 It is a structural schematic diagram of a smoke collecting device;

[0029] Figure 2 Schematic diagram of the movement trajectory of the upper and lower edges of the flap;

[0030] Figure 3 is a side view schematic diagram of the smoke collecting device in a first working state;

[0031] Figure 4 is a side view schematic diagram of the smoke collecting device in the second working state;

[0032] Figure 5 is a side view schematic diagram of the smoke collecting device in a third working state;

[0033] Figure 6Schematic diagrams of cooking scenarios of the smoke collecting device in the first working state, the second working state, and the third working state;

[0034] Figure 7 Schematic diagram of the structure of the flap;

[0035] Figure 8 Schematic cross-sectional view of the flap;

[0036] Figure 9 Schematic diagram of the four-bar linkage structure and the driving mechanism in one embodiment;

[0037] 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;

[0038] 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;

[0039] Figure 12 Schematic diagram of the four-bar linkage structure connected to the synchronizing rod;

[0040] Figure 13 Schematic diagram of the four-bar linkage structure as a split structure;

[0041] Figure 14 Schematic diagram of the internal structure of the smoke collecting housing;

[0042] Figure 15 Schematic diagram when the baffle does not close the avoidance groove;

[0043] Figure 16 Schematic diagram when the baffle closes the avoidance groove;

[0044] Figure 17 Schematic diagram of the steps of the control method of the integrated stove. Detailed implementation manners

[0045] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0046] In this specification, the orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly 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 different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0047] A control method for an integrated stove. The control method of this embodiment is based on an integrated stove, which includes a smoke collection device and a fan device. Among them, the smoke collection device is configured as a host computer and is located above the stove top, and the fan device is configured as a slave computer and is located below the stove top. The smoke collection device includes a smoke collection housing 1 and a flap 2. Among them, the smoke collection housing 1 has a smoke inlet 11, and the flap 2 is rotatably connected to the smoke collection housing 1.

[0048] Referring to Figures 1-5 , the flap 2 can move relative to the smoke inlet 11, and the movement of the flap 2 makes it have an initial state, a first working state, a second working state, and a third working state. Among them, in the initial state, the flap 2 closes the smoke inlet 11. In the first working state, an upper smoke inlet channel h1 is formed between the flap 2 and the upper edge of the smoke inlet 11. In the second working state, an upper smoke inlet channel h1 and a lower smoke inlet channel h2 are respectively formed between the flap 2 and the upper edge and the lower edge of the smoke inlet 11. In the third state, the flap 2 completely exposes the smoke inlet 11.

[0049] Referring to Figure 17 , the steps of the control method of this embodiment include:

[0050] When the fan device is in the on state, that is, the fan in the fan device starts to provide suction for the oil fume, detect the height of the cookware corresponding to all the burners in the on state, and compare it with the preset height;

[0051] If the height of all the cookware is greater than the preset height, control the flap 2 to adjust to the first working state;

[0052] If the height of all the cookware is less than the preset height, control the flap 2 to adjust to the third working state;

[0053] If the height of at least one cookware is less than the preset height and the height of at least one cookware is greater than the preset height, control the flap 2 to adjust to the second working state.

[0054] When the height of all the cookware is greater than the preset height, that is, when the height of the cookware is relatively high, control the flap 2 to the first working state. A stable upper smoke inlet channel h1 is formed between the flap 2 and the upper edge of the smoke inlet 11. The first working state is suitable for the steaming mode. Since the cookware height is relatively high in the steaming scenario, such as a steamer, the oil fume or steam mainly rises vertically after being heated, avoiding the air flow dispersion 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 place.

[0055] When the height of all cookware is less than the preset height, that is, when the height of the cookware is relatively low, the flap 2 is controlled to be in the third working state. The third working state is suitable for the stir-fry mode, and is adapted to the characteristics of large amount of oil smoke and wide diffusion range in the stir-fry mode. The fully open smoke inlet 11 is fully open in cross section to form the maximum air inlet area, so that the smoke inlet 11 can capture both the vertically rising oil smoke and the smoke diffusing to the surroundings at the same time.

[0056] When the height of at least one pot is smaller than the preset height and the height of at least one pot is larger than the preset height, that is, when the heights of the pots vary, the flap 2 is controlled to be in the second working state, and the second working state is suitable for a variety of different cooking methods, such as stir-frying on some burners and steaming on other burners. The upper smoke inlet channel h1 vertically captures the steam from the tall pots, and the lower smoke inlet channel h2 horizontally captures the diffused oil smoke produced by the short wok.

[0057] The control method of this implementation case realizes precise smoke control that dynamically adapts to different cooking scenarios by real-time detection of the height of multi-burner pots and linkage adjustment of the flap 2 state. This method significantly improves the oil fume capture efficiency and energy utilization of the integrated stove under complex cooking conditions through a multi-condition adaptive control strategy.

[0058] In this implementation case, the number of burners is not limited. Generally, two burners are provided in a home kitchen environment, while more burners can be provided in a commercial kitchen environment.

[0059] In this embodiment, the preset height is not lower than the height of the lower edge of the lower smoke inlet 11. When the height of the cookware is higher than the second smoke inlet channel, the position where the oil smoke is generated on the cookware may be higher than the second smoke inlet channel, and the first smoke inlet channel at the highest position is needed to absorb the oil smoke to prevent the oil smoke from escaping. Therefore, the preset height is set to be not lower than the height of the lower edge of the smoke inlet 11, and by adjusting the flap 2 to the first working state or the second working state, it is ensured that the oil smoke has a sufficient smoking effect.

[0060] In this embodiment, before the fan device is turned on and the height of the pots corresponding to all the burners in the turned-on state is detected, the flap 2 is first adjusted from the initial state to the preset state. Since the flap 2 can allow oil smoke to enter the smoke inlet 11 in all other states except the initial state of closing the smoke inlet 11, the flap 2 is first adjusted to the preset state, so that the smoke collecting device can have the ability to smoke before detecting the height of the pot, and the flap 2 always has the ability to smoke during the process of adjusting from the preset state to the first working state, the second working state, or the third working state according to the height of the pot, thereby avoiding the situation where oil smoke escapes due to the adjustment of the flap 2.

[0061] In this embodiment, the preset state of the flap 2 is configured as the third working state. In the stir-fry mode, the amount of oil fume generated by the cookware is more than that in the steam mode. When the fan device is started, the flap 2 is immediately adjusted from the initial state to the third working state. At this time, the smoke inlet channel is completely exposed, and an initial negative pressure field with the largest coverage range can be preferentially formed before detecting the height of the cookware, quickly suppressing the diffusion of the concentrated oil fume at the initial stage of high-fire stir-frying, and avoiding the short suction vacuum period caused by the "detect first and then adjust" process in the traditional logic. In the steam mode, even if the flap 2 is fully open initially, it can still be switched to the first working state after detecting a tall cookware later to meet the high-position oil fume capture requirements of deep cookware. This hierarchical control strategy of "first global coverage and then precise adaptation" not only solves the escape risk of instantaneous large oil fume in the stir-fry mode due to detection delay, but also dynamically adjusts to accommodate the efficient and low-consumption requirements of the steam mode, while avoiding the flow field disturbance caused by frequent switching of the flap 2, ultimately achieving the optimal balance of energy efficiency and performance in high- and low-oil fume scenarios.

[0062] In this embodiment, the height of the cookware corresponding to all the burners in the on state is detected. If the height of the cookware remains unchanged within the preset time n, the state of the flap 2 is adjusted. If the height of the cookware changes within the preset time n, the height of the cookware corresponding to the burners in the on state is detected again. During the cooking process, the cookware may have short-term height changes due to stir-frying, movement, or temporary operations. If the flap 2 is directly adjusted in response to such signals immediately, it will not only cause the mechanical structure to start and stop frequently, thus increasing wear and energy consumption, but also lead to repeated reconstruction of the air duct pressure field, destroying the stability of oil fume capture. The preset time n is set as a dynamic filtering window, and invalid interference signals are filtered through a delay determination mechanism. Only when the height change lasts for more than the time threshold is it determined as a valid cooking scenario switch and the flap 2 is triggered to act.

[0063] In this embodiment, the preset time is 3 - 10 s, and it is usually set to about 5 s.

[0064] For the specific structure of the smoke collecting housing 1, refer to Figures 1-16, the smoke collecting device further includes at least one four-link component disposed within the smoke collecting housing 1 and connected to the flap 2, and a driving mechanism for providing a driving force to the flap 2. The four-link component is configured to guide the movement of the flap 2 when the driving mechanism provides a driving force. The movement trajectory of the flap 2 includes synchronous lifting movement and rotation. The rotation of the flap 2 first rotates along the direction away from the front plate 12 of the smoke collecting housing 1, and then rotates along the direction close to the front plate 12 of the smoke collecting housing 1. 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 gradually rises, rather than the vertical upward movement; the rotation of the flap 2 refers to the state change in which the inclination of the flap 2 gradually changes. The movement trajectory of the flap 2 causes 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.

[0065] For the flap 2 and the concentrated working states, more specifically, referring 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.

[0066] The four-link component of this embodiment realizes the S-shaped composite trajectory of the flap 2 through kinematic pair constraints. Referring to Figure 2 the movement trajectories c1 and c2 of the upper edge and the lower edge of the flap 2 in

[0067] 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 or between the lower front plate 12 and the 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 provided on the upper front plate 122. The lower front plate 121 is vertically arranged and forms a first guiding surface s1 for guiding the oil fume to flow to the smoke inlet 11.

[0068] It should be noted that the definition of directions in the specific implementation manner 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.

[0069] The lower front plate 121 maintains a vertical direction and forms a first guiding surface s1, which can force the diffused oil fume splashed from the side of the cookware in the frying mode to be guided 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 guiding surface s1, forming a synergistic effect with the negative pressure area of the smoke inlet 11, effectively suppressing the escape of the oil fume.

[0070] 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 part 121 of the front plate along an upward and backward direction to the lower edge of the smoke inlet 11. The extension plate 124 and the lower part 121 of the front plate are of an integral structure, and the extension plate 124 forms a third flow guiding surface s3. The cooking fume flows upward along the first flow guiding surface s1, then flows upward and backward along the third flow guiding 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.

[0071] In this embodiment, in any state between the initial state and the third working state, the flap 2 is located behind the plane of the lower part 121 of the front plate, so that a safe distance is always maintained between the flap 2 and the cookware, avoiding collision between the flap 2 and the cookware during the movement process, 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 the cooking fume airflow peeling caused by partial convexity of the flap 2. No matter what state the flap 2 is in, the vertical flow guiding surface of the lower part 121 of the front plate can maintain a complete airflow guiding function, ensuring that the cooking fume directly enters the smoke inlet 11 along the flow guiding surface after being generated from the cookware, and eliminating the cooking fume turbulent flow area caused by the sudden change of the position of the flap 2.

[0072] 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 cooking 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 cooking fume drifts upward, the smoke baffle 123 directly intercepts its rising path, forcing the cooking fume to change the 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, and can effectively block the cooking fume diffusing from the side and rear of the cookware from escaping outward; at the same time, the smoke baffle 123 makes the blocked cooking fume fall back toward the smoke collecting housing 1 along the lower surface of the smoke baffle 123 under the action of inertia, initially guiding the cooking fume to gather toward the area of the smoke inlet 11 and avoiding the disordered diffusion of the cooking fume outside the smoke collecting device.

[0073] 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.

[0074] In this embodiment, a plurality of distance sensors a are provided on the bottom surface of the smoke baffle 123. Each distance sensor a corresponds to each burner and is used to detect the height of the cookware on the burner, thereby providing a basis for determining whether to adjust the flap 2 to the first working state, the second working state, or the third working state. The distance sensor a can be set as a sensor of types such as optical, infrared, ultrasonic, etc.

[0075] 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. 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 the oil fume and steam: when the steam or oil fume rises vertically, the partial 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 along the lower surface of the smoke baffle 123 towards the inside of the smoke collection device under the influence of the 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, thereby preventing the steam or oil fume from generating eddies or escaping 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 collection housing 1 through the upper smoke inlet channel h1, reducing the sudden change of the flow channel caused by the partial occlusion of the flap 2, and finally improving the directional capture efficiency of the vertically rising steam or oil fume.

[0076] 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.

[0077] In this embodiment, the front edge of the smoke baffle 123 is located within the projection range of the smoke inlet 11 along its opening direction. In the third working state, the front 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 the negative pressure suction and the block of the smoke baffle 123, it is forced to flow along the lower surface of the smoke baffle 123 towards the smoke inlet 11, thereby preventing the formation of a "negative pressure blind area" along the area of the smoke baffle 123, which may cause the oil fume to bypass the smoke baffle 123 and escape laterally. 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 front 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 the edge escape.

[0078] In this embodiment, refer 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 communicating 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 in 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 extra 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 force 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 force caused by flow competition in the dual channels.

[0079] 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 in through the lower smoke inlet channel h2, avoiding the turbulent loss caused by the sudden change of 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.

[0080] 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 212. 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 the system pressure imbalance caused by the high flow velocity of the narrow upper air duct 21.

[0081] 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 the 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 fixed to the front surface of the base plate 22 by bonding.

[0082] In this embodiment, referring to Figure 9 and Figure 10 , for the four-bar linkage assembly, the four-bar linkage assembly includes a flap connection seat 33, a housing connection seat 34, a first link 31, and a second link 32. Among them, the flap connection seat 33 is connected to the back surface of the flap 2, the housing connection 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 connection seat 33 and the housing connection seat 34. The distance between the rotational connection points of the first link 31 at the flap connection seat 33 and at the housing connection seat 34 is less than the distance between the rotational connection points of the second link 32 at the flap connection seat 33 and at the housing connection 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 the length of the second link 32, that is, the rotational radius of the first link 31 is less than the rotational radius of the second link 32. The rotational connection positions of the first link 31 at the flap connection seat 33 and the housing connection seat 34 are respectively higher than the rotational connection positions of the second link 32 at the two, that is, the first link 31 and the second link 32 are arranged in an up-and-down layout position. Based on the mutual positional relationship and length relationship between the first link 31 and the second link 32, the S-shaped composite movement trajectory of the flap 2 is realized through kinematic pair constraints.

[0083] 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 implementation, 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 implementation 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, thus effectively reducing costs.

[0084] 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 movement-rotation process and ensuring the trajectory accuracy.

[0085] In one implementation, 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 received by 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 enhancing the long-term operation stability and fatigue resistance.

[0086] In another implementation, referring to Figure 13, the flap connecting seat 33 includes two flap 2 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 intervals between the two flap 2 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 2 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 2 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 2 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 acting points of the first connecting rod 31 and the second connecting rod 32 are dispersed along the left-right direction 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 mechanical actions.

[0087] 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 components, 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.

[0088] In another embodiment, referring to Figure 12 , a synchronous rod 35 extending in the left-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 component is used 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 component, it is possible to force the first connecting rod 31 and the second connecting rod 32 of the four-link component 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 component constitutes a space truss structure, significantly improving the bending stiffness of the overall mechanism and extending the service life.

[0089] In this embodiment, the driving 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, through the lateral rigid transmission characteristic of the synchronizing rod 35, ensure that the driving force of the push rod motor 41 is transmitted to each four-bar linkage assembly simultaneously and equally, completely eliminating the problem of asynchronous movement of the flap 2 caused by the lag or deviation of the unilateral driving force.

[0090] 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 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, preventing the synchronizing rod 35 from generating lateral bending deformation due to cantilever loading, ensuring that the driving force is transmitted to the bilateral four-bar linkage assembly without loss, and preventing its plastic deformation caused by fatigue during high-frequency reciprocating motion, guaranteeing the long-term stability of the movement trajectory of the flap 2.

[0091] 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, a stop piece 132 is provided on the back surface of the flap 2 below the avoidance groove 131, and during the process of adjusting the state of the flap 2 closing the air inlet 11 to the third working state, the stop piece 132 gradually approaches the sealing plate 13 and closes the avoidance groove 131.

[0092] Referring to Figure 15 and Figure 16The closed space formed by the sealing plate 13 and the flap 2 accommodates the four-bar assembly, and the baffle 132 is used to dynamically close 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 collecting shell 1, the sealing plate 13 physically isolates the oil fume from penetrating into the closed space, and 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 closes the avoidance groove 131, preventing the oil fume from entering the closed space through the slot and contacting the four-bar assembly, and completely placing the four-bar assembly outside the oil fume path, thereby avoiding the condensation and deposition of oil fume on the hinge point and the connecting rod surface to form oil scale from the root, significantly reducing the risk of mechanical jamming and extending the service life of the mechanism.

[0093] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A control method for an integrated stove, characterized in that, The integrated range hood includes a smoke collecting device configured as a host computer and a fan device configured as a slave computer. The smoke collecting device includes a smoke collecting housing (1) having a smoke inlet (11), and a flap (2) movably connected to the smoke collecting housing (1). The movement of the flap (2) relative to the smoke inlet (11) enables it to have an initial state of closing the smoke inlet (11), a first working state of forming an upper smoke inlet channel (h1) along the upper edge of the smoke inlet (11), a second working state of forming an upper smoke inlet channel (h1) and a lower smoke inlet channel (h2) along the upper and lower edges of the smoke inlet (11) respectively, and a third working state of completely exposing the smoke inlet (11). The steps of the control method include: When the fan device is in the on state, detect the height of the cookware corresponding to all the burners in the on state, and compare it with a preset height. If the heights of all the cookware are greater than the preset height, control the flap (2) to be adjusted to the first working state. If the heights of all the cookware are less than the preset height, control the flap (2) to be adjusted to the third working state. If the height of at least one cookware is less than the preset height and the height of at least one cookware is greater than the preset height, control the flap (2) to be adjusted to the second working state.

2. The control method of the integrated cooking stove according to claim 1, wherein, The preset height is not lower than the height of the lower edge of the smoke inlet (11).

3. The control method of the integrated range hood according to claim 1, characterized in that, Before the fan device is turned on and before detecting the height of the cookware corresponding to all the burners in the on state, first adjust the flap (2) from the initial state to a preset state.

4. The control method of the integrated range hood according to claim 3, wherein, The preset state of the flap (2) is configured as the third working state.

5. The control method of the integrated range hood according to claim 1, characterized in that Detect the height of the cookware corresponding to all the burners in the on state. If the height of the cookware remains unchanged within a preset time n, adjust the state of the flap (2). If the height of the cookware changes within the preset time n, re-detect the height of the cookware corresponding to the burners in the on state.

6. The control method of the integrated cooking stove according to claim 5, characterized in that, The preset time is 3 - 10 s.

7. The control method of the integrated range hood according to claim 1, characterized in that The upper edge of the front plate of the smoke collecting housing (1) is connected with a smoke baffle (123) extending forward for blocking the rising oil fume; the bottom surface of the smoke baffle (123) is provided with a plurality of distance sensors (a) corresponding to each burner respectively for detecting the height of the cookware on the corresponding burner.

8. The control method of the integrated range hood according to claim 1, characterized in that, The smoke collecting device further includes at least one four-bar linkage assembly arranged in the smoke collecting housing (1) and connected to the flap (2), and a driving mechanism for providing a driving force to the flap (2). The four-bar linkage assembly is used to guide the movement of the flap (2) when the driving mechanism provides a driving force. The movement track of the flap (2) is decomposed into synchronous lifting movement and rotation, and the rotation of the flap (2) first rotates in the direction away from the front plate (12) of the smoke collecting housing (1) along its upper edge, and then rotates in the direction close to the front plate (12) of the smoke collecting housing (1) along its upper edge, so that the flap (2) is sequentially adjusted from the initial state of closing the smoke inlet (11) to the first working state, the second working state and the third working state.

9. The control method of the integrated range hood according to claim 8, wherein The four-link assembly includes a flap connecting seat (33) connected to the back of the flap (2), a housing connecting seat (34) connected inside the smoke collecting housing (1), a first link (31) and a second link (32) that respectively and simultaneously rotatably connect the flap connecting seat (33) and the housing connecting seat (34); the distance between the rotation connection points of the first link (31) on the flap connecting seat (33) and on the housing connecting seat (34) is less than the distance between the rotation connection points of the second link (32) on the flap connecting seat (33) and on the housing connecting seat (34); the rotation connection positions of the first link (31) on the flap connecting seat (33) and the housing connecting seat (34) are respectively higher than the rotation connection positions of the second link (32) at both.

10. The control method of the integrated range hood according to claim 8, characterized in that, An air duct (21) is formed inside the flap (2), and upper through openings (21a) and lower through openings (21b) are respectively formed at the upper edge and the lower edge of the flap (2).

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