Control method of island table range hood and island table range hood

Abstract

The embodiment of the invention discloses a control method of an island table range hood and the island table range hood. The island table range hood comprises a range hood structure and an air curtain structure, and the overturning angle of an air guide plate in the air curtain structure is adjustable. The control method comprises the following steps: acquiring a working gear of the range hood structure; when the range hood structure has smoke leakage, the air deflector is controlled to be opened with the included angle between the air deflector and the air outlet of the air curtain as the initial angle; detecting the real-time temperature of the cookware; according to the real-time temperature of the cookware and the initial opening angle of the air deflector, the lampblack escape probability is calculated; when the lampblack escape probability exceeds a preset probability threshold value, the included angle between the air guide plate and the air outlet of the air curtain is increased according to the lampblack escape probability and the real-time temperature of the cookware. According to the embodiment of the invention, the problem of smoke leakage of an existing range hood is solved, active interception of the air curtain in the smoke leakage state is realized, the smoke suction effect of the range hood is improved, the comfort of a user working in a kitchen is ensured, and the user experience is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to a range hood air curtain technology, and more particularly to a control method for an island range hood and the island range hood. Background Art

[0002] Open kitchens are a popular trend in modern residential design. However, their open structure also makes it easy for cooking fumes to spread to adjacent functional areas, posing a continuous challenge to air quality and living comfort.

[0003] To address this issue, island range hoods, with their submersible installation and top-mounted negative pressure suction and exhaust systems, have become the mainstream fume control solution for open kitchens. To further improve fume capture efficiency, existing technologies also create a directional airflow barrier above the cooking surface, preventing fume escape and synergistically enhancing the adsorption efficiency of the negative pressure zone.

[0004] However, at present, the control strategy of air curtain range hoods has significant limitations. In order to ensure the oil fume adsorption effect, the airflow inclination angle and air volume are usually fixed parameters, which cannot be dynamically adjusted according to the working status of the range hood. As a result, smoke leakage problems will occur when the cooking status changes. Summary of the Invention

[0005] The present invention provides a control method for an island range hood and the island range hood, so as to solve the problem of smoke leakage in existing range hoods.

[0006] In a first aspect, an embodiment of the present invention provides a control method for an island range hood. The island range hood includes a range hood structure and an air curtain structure, wherein the air curtain structure includes an air curtain air outlet and an air guide plate, and the flip angle of the air guide plate is adjustable.

[0007] The control method includes:

[0008] Obtain the working position of the range hood structure;

[0009] When smoke escape occurs in the range hood structure, the air guide plate is controlled to open at an angle with the air curtain outlet as the initial angle; wherein the initial angle is the angle between the air guide plate and the air curtain outlet corresponding to the preset working gear of the current range hood structure;

[0010] Detect the real-time temperature of the pot;

[0011] Calculate the probability of oil smoke escaping based on the real-time temperature of the cookware and the initial opening angle of the air guide plate;

[0012] When the probability of oil smoke escaping exceeds a preset probability threshold, the angle between the air guide plate and the air curtain outlet is increased according to the probability of oil smoke escaping and the real-time temperature of the pot.

[0013] Optionally, before calculating the probability of oil smoke escape based on the real-time temperature of the cookware and the initial opening angle of the air guide plate, the following steps may also be performed:

[0014] Get the standard temperature of the cookware under the current working gear of the range hood structure;

[0015] Calculate the probability of oil smoke escaping based on the real-time temperature of the cookware and the initial angle of the air deflector opening, including:

[0016] Calculate the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the working gear of the current range hood structure;

[0017] The probability of oil smoke escaping is calculated based on the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the current working gear of the range hood structure, as well as the initial opening angle of the air guide plate.

[0018] Optionally, the probability of oil smoke escaping is calculated based on the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure, as well as the initial opening angle of the air guide plate, including:

[0019] According to the formula , calculate the probability of oil smoke escape Pe; where △T is the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the current working gear of the range hood structure, A1 is the initial opening angle of the air guide plate, and k and C are both preset constants.

[0020] Optionally, when the probability of oil smoke escaping exceeds a preset probability threshold, the angle between the air guide plate and the air curtain outlet is increased according to the probability of oil smoke escaping and the real-time temperature of the cookware, including:

[0021] When the probability of oil smoke escaping exceeds a preset probability threshold, the increase in the angle A' between the air guide plate and the air curtain outlet is calculated based on the oil smoke escaping probability and the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working gear of the range hood structure;

[0022] Adjust the angle between the air guide plate and the air curtain outlet to the target angle A 11 , where A 11 =A1+A'; where A1 is the initial opening angle of the air guide plate.

[0023] Optionally, when the probability of oil fume escaping exceeds a preset probability threshold, the increase in the angle A' between the air guide plate and the air curtain outlet is calculated based on the probability of oil fume escaping and the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure, including:

[0024] When the probability of oil smoke escaping exceeds the preset probability threshold,

[0025] According to the formula , calculate the increase in the angle A' between the air guide plate and the air curtain outlet; where Pe is the probability of oil smoke escape, △T is the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the current working gear of the range hood structure, k and C are preset constants, and B is the preset constant corresponding to the current working gear of the range hood structure.

[0026] Optionally, the range hood structure has working gears including stir-frying, frying and steaming;

[0027] When the range hood structure is in the stir-fry mode, B=B1; when the range hood structure is in the frying mode, B=B2; when the range hood structure is in the steaming mode, B=B3;

[0028] Among them, B1>B2>B3.

[0029] Optionally, B1=0.3, B2=0.2, B3=0.1.

[0030] Optionally, k=0.1, C=15.

[0031] Optionally, the range hood structure has working gears including stir-frying, frying and steaming;

[0032] When the range hood is in the stir-fry mode, the initial angle is A2;

[0033] When the range hood structure is in the frying gear, the initial angle is A3;

[0034] When the range hood structure is in the steaming gear, the initial angle is A4;

[0035] Among them, A2>A3>A4.

[0036] In the second aspect, an embodiment of the present invention further provides an island range hood, comprising a range hood structure and an air curtain structure, the air curtain structure comprising an air curtain outlet and an air guide plate, the flip angle of the air guide plate being adjustable; the island range hood is used to execute the control method of the island range hood as described in any one of the first aspects.

[0037] The embodiment of the present invention discloses a control method for an island range hood and an island range hood. The control method includes: obtaining the working gear of the range hood structure to provide a basis for the subsequent adjustment of the air curtain angle. When smoke leakage occurs in the range hood structure, the air guide plate is controlled to open at an initial angle with the air curtain outlet to form a basic air curtain, preliminarily building a barrier to oil smoke, and facilitating the subsequent rapid adjustment of the air curtain state. The real-time temperature of the cookware is detected; based on the real-time temperature of the cookware and the initial angle of opening of the air guide plate, the probability of oil smoke escape is calculated to quantify the risk of smoke leakage. When the probability of oil smoke escape exceeds a preset probability threshold, the angle between the air guide plate and the air curtain outlet is increased according to the probability of oil smoke escape and the real-time temperature of the cookware, so as to specifically compensate for the smoke leakage problem caused by changes in cooking conditions or insufficient current operating conditions of the range hood, so that the air curtain can better adapt to different cooking conditions and range hood operating conditions. The embodiment of the present invention solves the problem of smoke leakage in existing range hoods, realizes active interception of the air curtain in the smoke leakage state, improves the smoke extraction effect of the range hood, ensures the comfort of users when working in the kitchen, and enhances the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic structural diagram of an island range hood provided by an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of air flow of an air curtain formed by an island range hood provided in an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of air flow inside an island range hood provided by an embodiment of the present invention;

[0041] Figure 4 A schematic structural diagram of an air curtain structure provided by an embodiment of the present invention;

[0042] Figure 5 A schematic structural diagram of a rotating structure provided by an embodiment of the present invention;

[0043] Figure 6 This is a flow chart of a control method for an island range hood provided by an embodiment of the present invention;

[0044] Figure 7 This is a flow chart of another control method for an island range hood provided by an embodiment of the present invention;

[0045] Figure 8 This is a flow chart of another control method for an island range hood provided by an embodiment of the present invention;

[0046] Figure 9 This is a flow chart of another control method for an island range hood provided by an embodiment of the present invention;

[0047] Figure 10This is a flow chart of another control method for an island range hood provided by an embodiment of the present invention;

[0048] In the picture:

[0049] 1. Countertop; 11. Range hood air outlet; 2. Smoke collection chamber; 21. Range hood smoke inlet; 22. Cover plate; 23. Smoke collection chamber receiving slot; 3. Air curtain structure; 31. Air curtain housing; 311. Air curtain air inlet; 312. Air curtain air outlet; 32. Air curtain fan; 33. Air guide plate; 34. Rotating mechanism; 341. Rotating assembly; 3411. Fixed arm; 3412. Rotating arm; 3413. Arc-shaped rotating plate; 342. Push rod motor; 3421. Telescopic rod; 3422. Latch; 4. Infrared ranging module; 6. Range hood chassis; 61. Air duct; 62. Range hood fan; 7. Induction cooker; 8. Lifting mechanism. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0051] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present invention are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present invention. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is formed "on" or "under" another element, it can not only be formed directly "on" or "under" another element, but can also be formed indirectly "on" or "under" another element through an intermediate element. The terms "first", "second", etc. are only used for descriptive purposes and do not indicate any order, quantity or importance, but are only used to distinguish different components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The term "including" and its variations used in the present invention are open inclusions, that is, "including but not limited to." The term "based on" means "based at least in part on." The term "one embodiment" means "at least one embodiment."

[0053] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish the corresponding contents, and are not used to limit the order or mutual dependence.

[0054] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0055] The embodiment of the present invention provides an island range hood with an adjustable air curtain angle. Figure 1 This is a structural diagram of an island range hood provided by an embodiment of the present invention. Figure 2 This is a schematic diagram of the air flow of an air curtain formed by an island range hood provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of air flow inside an island range hood provided by an embodiment of the present invention. Figure 4 A schematic structural diagram of an air curtain structure provided by an embodiment of the present invention is shown. Figure 5 A schematic diagram of a rotating structure provided by an embodiment of the present invention. In the embodiment provided by the present invention, optionally, the first direction X1 and the second direction X2 are in the same direction, and the third direction Y is perpendicular to the second direction X2.

[0056] like Figure 1-Figure 5 As shown, the island range hood includes a range hood structure and an air curtain structure 3. The air curtain structure 3 includes an air curtain air outlet 312 and an air guide plate 33. The flip angle of the air guide plate 33 is adjustable.

[0057] Specifically, the range hood structure includes a countertop 1, on which a cooking area is provided for placing cooking utensils. A smoke collection chamber 2 is provided on the countertop 1 and can be an embedded structure. During operation, the smoke collection chamber 2 rises to expose a range hood smoke inlet 21, which faces the cooking area on the countertop 1. This inlet 21 is used to absorb oil smoke through negative pressure, thereby improving the quality of oil smoke in the kitchen.

[0058] The air curtain structure 3 comprises an air curtain housing 31, an air curtain fan 32, an air guide plate 33, and a rotation mechanism 34. The air curtain structure 3 is positioned adjacent to the range hood smoke inlet 21. The air curtain fan 32 is located within the air curtain housing 31. The air curtain housing 31 is provided with an air curtain inlet 311 and an air curtain outlet 312. The air curtain outlet 312 faces the cooking area of ​​the countertop 1. The air guide plate 33 of the air curtain outlet 312 can rotate within a range of 0-90 degrees.

[0059] When the air curtain fan 32 is activated, the air curtain outlet 312 ejects air toward the cooking area of ​​the countertop 1, forming an air curtain that covers the cooking area and prevents cooking fumes from escaping into the kitchen. The air deflector 33 is pivotally connected to the edge of the air curtain outlet 312 via a rotating mechanism 34. The tilting angle of the air deflector 33 is adjustable. The air deflector 33 is used to adjust the outlet angle of the air curtain fan 32, thereby controlling the outlet angle of the air curtain airflow and thus varying the direction and range of the air curtain's action.

[0060] For example, during use of this embodiment of the present invention, after a user places cooking utensils on the cooking area of ​​countertop 1 and turns on induction cooktop 7, the smoke collection chamber 2 hidden within range hood chassis 6 begins to operate under the drive of lifting mechanism 8. The top cover 22 gradually separates from the countertop 1, and the smoke collection chamber 2 rises from the smoke collection chamber accommodating slot 23 until the range hood smoke inlet 21 is completely exposed above the cooking area, and the range hood enters the operating state.

[0061] At the same time, infrared ranging module 4, mounted on smoke collection chamber 2 or air curtain structure 3, activates and emits infrared rays to detect the horizontal distance between the far end of the cooking appliance and smoke collection chamber 2. This detection data is then transmitted to the controller. The controller receives the gear position signal from induction cooktop 7 and, combined with the infrared ranging data, generates control instructions for air curtain structure 3.

[0062] The controller controls the air deflector 33 in the air curtain structure 3 to rotate upward, ensuring that the air curtain covers the cookware before stopping. At this point, outside air enters the air curtain housing 31 through the air curtain inlet 311 on the side of the air curtain structure 3 facing away from the smoke collection chamber 2. Air is accelerated by the air curtain fan 32 before being ejected through the air curtain outlet 312. Due to the Coanda effect, air flows closely against the air deflector 33, forming a three-sided, semi-enclosed air curtain above the cooking area, consisting of the upper air curtain and the side air curtains. The cooking fumes within the air curtain are drawn into the hood inlet 21 of the smoke collection chamber 2. Driven by the hood fan 62, the cooking fumes flow along the air duct 61 toward the hood outlet 11. As they pass through the filters (such as an oil screen or activated carbon) within the air duct 61, they are adsorbed and purified. Finally, the clean air is discharged from the hood outlet 11 on the countertop 1, located on the side of the smoke collection chamber 2 facing away from the cooking area.

[0063] After cooking is finished, the user turns off the induction cooker 7, the air guide plate 33 of the air curtain structure 3 returns to the initial closed state, the smoke collecting chamber 2 slowly descends under the action of the lifting mechanism 8, the top cover 22 is flush with the table 1, and the range hood enters standby mode.

[0064] With respect to the island range hood of the above embodiment, an embodiment of the present invention further provides a control method for the island range hood. Figure 6 This is a flow chart of a control method for an island range hood provided by an embodiment of the present invention, with reference to Figure 6 , the adjustment method includes:

[0065] S110: Obtain the working position of the range hood structure.

[0066] The operating modes of the range hood structure can be understood as pre-set operating modes to suit the fume treatment requirements of different cooking scenarios. Different operating modes include different combinations of core parameters such as the speed of the air curtain fan 32, the angle of the air guide 33, and the air curtain intensity.

[0067] Specifically, the pot includes multiple working states, and corresponding to different working gears of the smoke machine structure, the working gears of the smoke machine structure are determined based on the working state of the pot. For example, the low gear is suitable for cooking scenes with less oil smoke, and the running speed of the air curtain fan 33 is low and the noise is small; the high gear is suitable for scenes with large amount of oil smoke, and the speed of the air curtain fan 32 is high and the angle of the air deflector 33 is larger.

[0068] S120, when the smoke machine structure exists the smoke running condition, the air deflector is opened according to the initial angle with the air curtain air outlet.

[0069] Among them, the preset initial angle can be understood as the fixed angle between the air deflector 33 and the air curtain air outlet 312 before the island smoke machine leaves the factory, which is set according to the characteristics of the smoke machine structure, the rising rule of oil smoke in common cooking scenes and other factors, and is used to quickly build a basic air curtain when the smoke machine runs.

[0070] Specifically, before obtaining the real-time temperature of the pot, the pre-starting mechanism is adopted because the smoke machine cannot determine whether the current smoke running condition is serious. When pre-starting, the smoke machine first controls the air deflector 33 to open according to the preset initial angle with the air curtain air outlet 312, and preliminarily forms an air curtain to reduce the disordered diffusion of oil smoke. Compared with starting after obtaining the specific smoke running condition, the starting speed is faster.

[0071] S130, detecting the real-time temperature of the pot.

[0072] Among them, the real-time temperature can be understood as the instantaneous temperature value dynamically changing with time in the cooking process on the surface of the pot or in the cooking area.

[0073] Specifically, a temperature sensor can be arranged on the shell of the smoke machine towards the pot or the cooking area to monitor the pot temperature in real time and further obtain the cooking condition.

[0074] S140, calculating the oil smoke escape probability according to the real-time temperature of the pot and the initial angle of the air deflector opening.

[0075] Among them, the oil smoke escape probability can be understood as the proportion of oil smoke that is not effectively captured by the smoke machine and diffuses into the environment where the smoke machine is located under certain cooking conditions (such as pot temperature, air deflector angle, environmental wind speed, etc.).

[0076] Specifically, the relationship between the real-time temperature and the initial angle of the air deflector 33 opening and the oil smoke escape probability is preset in the smoke machine controller. This relationship can be obtained by fixing other variables, changing the temperature and the angle of the air deflector, and recording the number of oil smoke escape in the controllable kitchen environment.

[0077] S150, when the oil smoke escape probability exceeds the preset probability threshold, increasing the angle between the air deflector and the air curtain air outlet according to the oil smoke escape probability and the real-time temperature of the pot.

[0078] Among them, the preset probability threshold can be understood as the oil smoke escape risk warning line, which is used to determine whether it is necessary to trigger the air guide plate angle adjustment mechanism.

[0079] Specifically, the larger the angle between the air deflector 33 and the air curtain outlet 312, the wider the air curtain's coverage and the greater its ability to intercept diffused oil smoke. When oil smoke escape is confirmed, the probability of oil smoke escape is continuously monitored. When the probability of oil smoke escape exceeds a preset probability threshold, it can be considered that the oil smoke escape has affected the user experience and it is necessary to increase the angle between the air deflector 33 and the air curtain outlet 312 to intervene in the oil smoke escape. The adjustment angle can be determined based on the relationship between the real-time temperature preset in the range hood controller and the angle at which the air deflector 33 is opened and the probability of oil smoke escape.

[0080] Embodiments of the present invention disclose a control method for an island range hood and an island range hood. The control method includes: obtaining the operating position of the range hood structure to prepare for adjusting the operating state of the air curtain to match the current cooking conditions. When smoke escape occurs from the range hood structure, the air deflector is controlled to open at an initial angle relative to the air curtain outlet, forming a basic air curtain and initially constructing a barrier to oil smoke, facilitating subsequent rapid adjustment of the air curtain state. The real-time temperature of the pot is detected, and the probability of oil smoke escape is calculated based on the real-time temperature of the pot and the initial angle at which the air deflector is opened, thereby determining whether the air deflector angle adjustment mechanism needs to be triggered. When the probability of oil smoke escape exceeds a preset probability threshold, the angle between the air deflector and the air curtain outlet is increased based on the oil smoke escape probability and the real-time temperature of the pot to intervene in oil smoke escape. When the risk of oil smoke escape increases, the air curtain shape is dynamically optimized to balance the smoke capture efficiency and airflow stability under different temperature scenarios, so that the air curtain can better adapt to different cooking conditions and range hood operating conditions. The embodiment of the present invention solves the problem of smoke leakage in existing range hoods, realizes active interception of the air curtain in the smoke leakage state, improves the smoke extraction effect of the range hood, ensures the comfort of users when working in the kitchen, and enhances the user experience.

[0081] In an optional embodiment, the working gears of the range hood structure include stir-frying, frying and steaming;

[0082] When the range hood is in the stir-fry mode, the initial angle is A2;

[0083] When the range hood structure is in the frying gear, the initial angle is A3;

[0084] When the range hood structure is in the steaming gear, the initial angle is A4;

[0085] Where A2>A3>A4, the stir-fry, fry, and steam modes can be understood as preset operating modes in the range hood controller. For example, the stir-fry, fry, and steam modes can be divided by oil fume generation rate. The preset oil fume generation rate intervals corresponding to the stir-fry and fry modes are separated by a first oil fume generation rate threshold C1, while the preset oil fume generation rate intervals corresponding to the frying and steaming modes are separated by a second oil fume generation rate threshold C2. Where C1>C2, in a specific embodiment, C1=80 and C2=50.

[0086] Figure 7 This is a flow chart of another control method for an island range hood provided by an embodiment of the present invention, referring to Figure 7 For the above embodiment and island range hood, before "S140, calculating the probability of oil smoke escape based on the real-time temperature of the cookware and the initial opening angle of the air guide plate," the following is also included:

[0087] Get the standard temperature of the cookware under the current working position of the range hood structure

[0088] "S140. Calculate the probability of oil smoke escaping based on the real-time temperature of the cookware and the initial opening angle of the air guide plate." This can be broken down into:

[0089] Calculate the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the working gear of the current range hood structure;

[0090] The probability of oil smoke escaping is calculated based on the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the current working gear of the range hood structure, as well as the initial opening angle of the air guide plate.

[0091] For details not yet provided in this embodiment, please refer to the previous embodiment.

[0092] like Figure 7 As shown, another control method for an island range hood provided by an embodiment of the present invention may include the following specific steps:

[0093] S210: Obtain the working position of the range hood structure.

[0094] S220: When smoke leakage occurs in the range hood structure, the air guide plate is controlled to open at an initial angle with respect to the air curtain outlet.

[0095] S230: Detect the real-time temperature of the cookware.

[0096] S240: Obtain the standard temperature of the cookware at the current working level of the range hood structure.

[0097] Specifically, different working gears of the range hood structure are set with corresponding standard temperatures, and the amount of oil smoke generated is different at different working gears.

[0098] For example, the stir-fry setting has the highest standard temperature, resulting in a large amount of oil smoke and a fast production rate. The frying setting has a higher standard temperature, resulting in a moderate amount of oil smoke but a long duration. Similarly, the steaming setting has the lowest temperature and produces almost no oil smoke under normal operating conditions.

[0099] S250: Calculate the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure.

[0100] Specifically, the real-time temperature of the pot during the cooking process cannot be consistent with the standard temperature of the pot under the current working position of the range hood structure. Therefore, the temperature difference between the two is calculated to illustrate the extent to which the actual cooking scene deviates from the default design of the range hood, preparing for the subsequent calculation of the probability of oil fume escape.

[0101] S260: Calculate the probability of oil smoke escaping based on the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure, and the initial opening angle of the air guide plate.

[0102] Specifically, the temperature difference and the initial angle of the air deflector are used to quantify the probability of oil fume escape in the current cooking scenario, providing data support for the dynamic adjustment of the range hood. It can be understood that the smaller the temperature difference, the lower the probability of oil fume escape in the current cooking scenario. The larger the angle of the air deflector 33 and the wider the air curtain's coverage, the lower the probability of oil fume escape.

[0103] S270: When the probability of oil smoke escaping exceeds a preset probability threshold, increase the angle between the air guide plate and the air curtain outlet according to the probability of oil smoke escaping and the real-time temperature of the cookware.

[0104] Based on the above embodiments, the embodiment of the present invention calculates the temperature difference between the real-time temperature of the cookware and the standard temperature of the working gear to determine the degree to which the actual cooking deviates from the default design of the range hood; finally, combining the temperature difference and the initial angle of the air guide plate, the probability of oil fume escape is refined and calculated, providing an accurate basis for the dynamic adjustment of the range hood.

[0105] In an optional embodiment, “S260, calculating the probability of oil smoke escaping based on the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure, and the initial opening angle of the air guide plate” includes:

[0106] According to the formula , calculate the probability of oil smoke escape Pe.

[0107] Wherein, ΔT is the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure, A1 is the initial opening angle of the air guide plate 33, and k and C are both preset constants.

[0108] Specifically, Pe represents the probability of oil fume escape, ranging from 0 to 1. Values ​​closer to 0 indicate a lower probability of oil fume escape; values ​​closer to 1 indicate a higher probability of oil fume escape. ΔT is the temperature difference between the actual cookware temperature and the standard cookware temperature for the current range hood operating mode. It reflects the degree of deviation between the actual cooking temperature and the range hood's preset standard operating conditions. A larger absolute value of ΔT indicates a greater discrepancy between the actual cooking scenario and the range hood's default design, and thus a higher likelihood of oil fume escape. A1 is the initial angle at which the air deflector 33 opens. The air deflector angle affects the air curtain's coverage and airflow direction, and thus its effectiveness in intercepting oil fume. By calculating sinA1, this angle information can be converted into a numerical value to quantify the probability of oil fume escape. k is a preset constant used to adjust the weight of each term in the formula for the probability of oil fume escape. Different k settings are used to adapt to the patterns of oil fume generation at different settings. Similarly, C acts as an adjustment offset, with different C settings for different settings.

[0109] Figure 8 This is a flow chart of another control method for an island range hood provided by an embodiment of the present invention, with reference to Figure 8 For the above embodiment and island range hood, “S270: When the probability of oil fume escaping exceeds a preset probability threshold, increase the angle between the air guide plate and the air curtain outlet according to the probability of oil fume escaping and the real-time temperature of the cookware.” can be specifically refined as follows:

[0110] When the probability of oil smoke escaping exceeds a preset probability threshold, the increase in the angle A' between the air guide plate and the air curtain outlet is calculated based on the oil smoke escaping probability and the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working gear of the range hood structure;

[0111] Adjust the angle between the air guide plate and the air curtain outlet to the target angle A 11 .

[0112] For details not yet provided in this embodiment, please refer to the previous embodiment.

[0113] like Figure 8 As shown, another control method for an island range hood provided by an embodiment of the present invention may include the following specific steps:

[0114] S310: Obtain the working position of the range hood structure.

[0115] S320: When smoke leakage occurs in the range hood structure, the air guide plate is controlled to open at an initial angle with respect to the air curtain outlet.

[0116] S330: Detect the real-time temperature of the cookware.

[0117] S340: Obtain the standard temperature of the cookware at the current working level of the range hood structure.

[0118] S350: Calculate the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure.

[0119] S360: Calculate the probability of oil smoke escaping based on the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure, and the initial opening angle of the air guide plate.

[0120] S370. When the probability of oil fume escaping exceeds a preset probability threshold, calculate the increase A' in the angle between the air guide plate and the air curtain outlet based on the probability of oil fume escaping and the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure.

[0121] Specifically, the temperature difference and the initial angle of the air deflector can be used to quantify the probability of fume escape in the current cooking scenario. When the fume escape probability exceeds a preset threshold, it indicates that fume emission has impacted the user experience. The increase in the angle A' between the air deflector 33 and the air curtain outlet 312 can be calculated based on the fume escape probability and the temperature difference between the pot's real-time temperature and the pot's standard temperature at the current range hood operating position. This provides a quantitative basis for further adjusting the air deflector angle to reduce fume escape.

[0122] S380, adjust the angle between the air guide plate and the air curtain outlet to the target angle A 11 .

[0123] Among them, A 11 =A1+A', A1 is the initial opening angle of the air guide plate.

[0124] Specifically, the angle increase between the air guide plate 33 and the air curtain outlet 312 is combined with the initial angle A1 to determine the target angle A. 11 And adjust the air guide plate 33 to an angle suitable for the current range hood environment to enhance the interception effect of oil smoke and reduce the escape of oil smoke.

[0125] Based on the above embodiment, the embodiment of the present invention provides an accurate quantitative basis for adjusting the angle of the wind deflector by calculating the angle increase A'. The target angle A is determined based on A' and the initial angle. 11 And adjust, can accurately adjust the air guide plate to the appropriate angle, enhance the interception effect of oil smoke and reduce escape.

[0126] Figure 9 This is a flow chart of another control method for an island range hood provided by an embodiment of the present invention, with reference to Figure 9For the above embodiment and island range hood, "S370, when the probability of oil fume escaping exceeds a preset probability threshold, calculating the increase A' in the angle between the air guide plate and the air curtain outlet based on the probability of oil fume escaping and the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure" can be specifically refined as follows:

[0127] When the probability of oil smoke escaping exceeds the preset probability threshold, according to the formula , calculate the increase in the angle A' between the air guide plate and the air curtain outlet; where Pe is the probability of oil smoke escape, △T is the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the current working gear of the range hood structure, k and C are preset constants, and B is the preset constant corresponding to the current working gear of the range hood structure.

[0128] For details not yet provided in this embodiment, please refer to the previous embodiment.

[0129] like Figure 9 As shown, another control method for an island range hood provided by an embodiment of the present invention may include the following specific steps:

[0130] S410: Obtain the working position of the range hood structure.

[0131] S420: When smoke leakage occurs in the range hood structure, the air guide plate is controlled to open at an initial angle with respect to the air curtain outlet.

[0132] S430: Detect the real-time temperature of the cookware.

[0133] S440: Obtain the standard temperature of the cookware at the current working level of the range hood structure.

[0134] S450: Calculate the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure.

[0135] S460: Calculate the probability of oil smoke escaping based on the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure, and the initial opening angle of the air guide plate.

[0136] S470: When the probability of oil smoke escaping exceeds the preset probability threshold, according to the formula , calculate the increase in the angle A' between the air guide plate and the air curtain outlet.

[0137] Among them, Pe is the probability of oil smoke escape, △T is the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the current working gear of the range hood structure, k and C are both preset constants, and B is the preset constant corresponding to the current working gear of the range hood structure.

[0138] Specifically, Pe represents the probability of oil fume escape, ranging from 0 to 1. Values ​​closer to 0 indicate a lower probability of oil fume escape, while values ​​closer to 1 indicate a higher probability of oil fume escape. ΔT is the temperature difference between the actual cookware temperature and the standard cookware temperature for the current range hood operating mode. It reflects the degree to which the actual cooking temperature deviates from the range hood's preset standard operating conditions. A larger absolute value of ΔT indicates a greater discrepancy between the actual cooking scenario and the range hood's default design, and thus a higher probability of oil fume escape. k is a preset constant used to adjust the weight of each term in the formula on the probability of oil fume escape. Different k values ​​are used for different range hood operating modes to accommodate the different patterns of oil fume generation. C acts as an adjustment offset and has different values ​​for different range hood operating modes. Similarly, B is a preset constant corresponding to the current range hood operating mode. It is used to further adjust the calculated angle increment based on the range hood's operating mode, making the adjustment more adaptable to different operating modes. Under different operating modes, the change in the probability of oil fume escape varies with the same angle increment and temperature difference.

[0139] For example, the stir-fry gear produces a large amount of oil smoke and a fast generation speed, while the frying gear produces a medium amount of oil smoke but lasts for a long time. Therefore, the B corresponding to the stir-fry gear is made larger, and the angle adjustment range of the stir-fry gear is made larger and more sensitive to adapt to the faster oil smoke generation rate.

[0140] S480, adjust the angle between the air guide plate and the air curtain outlet to the target angle A 11 Among them, A 11 =A1+A', A1 is the initial opening angle of the air guide plate.

[0141] Based on the above embodiments, the embodiments of the present invention further quantify the angle adjustment method of the air guide plate, combine the current pot temperature and the probability calculation of oil fume escape, realize the dynamic matching of the range hood gear and the air curtain shape, form a closed-loop control of detection-calculation-adjustment, and quickly optimize the air curtain coverage range when smoke escapes, thereby improving the efficiency of oil fume capture.

[0142] In an optional embodiment, the working gears of the range hood structure include stir-frying, frying and steaming;

[0143] When the range hood structure is in the stir-fry mode, B=B1; when the range hood structure is in the frying mode, B=B2; when the range hood structure is in the steaming mode, B=B3;

[0144] Among them, B1>B2>B3, B1, B2 and B3 are preset coefficients, and B1, B2 and B3 can be understood as adjustment coefficients obtained through optimization of experimental data and user usage scenarios, which are used to quantify the influence weight of the deviation of the oil smoke generation rate under the cooking gear on the angle adjustment amplitude of the air guide plate 33.

[0145] Specifically, based on the characteristics of oil smoke generated by different cooking modes, stir-frying produces high volumes of oil smoke and generates it quickly, while frying produces moderate amounts of oil smoke but lasts longer. Setting B1 > B2 allows for greater and more sensitive angle adjustment for stir-frying. Both B1 and B2 reflect the principle of "greater oil smoke deviation, greater angle adjustment," but stir-frying has a higher unit deviation adjustment. Similarly, steaming mode is virtually smoke-free under normal operating conditions, and smoke leakage is mostly occasional (e.g., burning) and generally has a minor impact. Therefore, B2 > B3, resulting in more conservative adjustment of the air deflector 33 for steaming mode.

[0146] In an optional embodiment, B1=0.3, B2=0.2, and B3=0.1.

[0147] Specifically, different range hood operating levels correspond to different coefficients due to their different cooking characteristics.

[0148] In the stir-fry mode, the angle between the air guide plate 33 and the air curtain outlet 312 is as follows:

[0149] When stir-frying, the amount of oil smoke is large and generated quickly. The higher coefficient of 0.3 means that when the probability of oil smoke escape exceeds the threshold, the angle of the air guide plate will be adjusted more significantly to enhance the interception of large amounts of rapidly generated oil smoke.

[0150] In the frying mode, the angle between the air guide plate 33 and the air curtain outlet 312 is as follows:

[0151] The amount of frying oil smoke is moderate but long-lasting, and the coefficient of 0.2 makes the angle adjustment moderate, taking into account the capture of continuous oil smoke without excessive adjustment.

[0152] In the steaming mode, the angle between the air guide plate 33 and the air curtain outlet 312 is as follows:

[0153] Under normal cooking conditions, there is less oil smoke, and the coefficient of 0.1 represents a small angle adjustment, which avoids unnecessary adjustments, saves energy and maintains the range hood in a suitable working state.

[0154] In an optional embodiment, k=0.1 and C=15.

[0155] Specifically, k is a preset constant used to adjust the weight of each factor in the formula for the probability of oil smoke escaping. Different k values ​​are used in different gears to adapt to the patterns of oil smoke generation in different gears. C is used as an adjustment offset and has different values ​​in different gears. When k = 0.1 and C = 15, the angle between the air guide plate 33 and the air curtain outlet 312 is adjusted to the target angle:

[0156] .

[0157] Figure 10 This is a flow chart of another control method for an island range hood provided by an embodiment of the present invention, with reference to Figure 10 The technical solution of the embodiment of the present invention is optimized based on the above solution. The control method includes the following specific steps:

[0158] S501, start the induction cooker.

[0159] S502. Turn on the range hood.

[0160] S503: Monitor the temperature T of the cooking area.

[0161] S504: Determine whether T is greater than or equal to TC3:

[0162] Among them, TC3 corresponds to the lowest temperature of the cooking area when in the stir-fry mode; among them, the range hood can be preset to the stir-fry mode, which corresponds to the stir-fry mode mentioned above.

[0163] If yes, execute step S5041;

[0164] If not, execute step S505.

[0165] S5041, enter the stir-fry section.

[0166] After this step is completed, execute step S5042.

[0167] S5042. Open the air curtain, with the air curtain angle A1 = 30°.

[0168] After this step is completed, execute step S5043.

[0169] S5043, determine whether there is smoke leakage:

[0170] If yes, execute step S5044;

[0171] If not, the process ends.

[0172] S5044. If smoke is leaking, calculate the probability of smoke escaping Pe.

[0173] After this step is completed, execute step S5045.

[0174] S5045: Determine whether Pe is greater than 0.05:

[0175] If yes, execute step S5046;

[0176] If not, execute step S503.

[0177] S5046. If Pe is greater than 0.05, correct the wind curtain angle according to formula (3).

[0178] Where, formula (3): , where A1 is the initial opening angle of the air guide plate 33, A 11 is the target angle between the air guide plate 33 and the air curtain outlet 312, the probability of oil smoke escape is Pe, k and C are both preset constants;

[0179] After this step is completed, the process ends.

[0180] S505: Determine whether T is greater than or equal to TC2:

[0181] Among them, TC2 corresponds to the lowest temperature of the cooking area in the strong gear; among them, the range hood can also be preset to the strong gear, which corresponds to the frying gear mentioned above.

[0182] If yes, execute step S5051;

[0183] If not, execute step S506.

[0184] S5051, enter strong gear.

[0185] After this step is completed, execute step S5052.

[0186] S5052. Open the air curtain, with the air curtain angle A2 = 45°.

[0187] After this step is completed, execute step S5053.

[0188] S5053, determine whether there is smoke leakage:

[0189] If yes, execute step S5054;

[0190] If not, the process ends.

[0191] S5054. If smoke is leaking, calculate the probability of smoke escaping Pe.

[0192] After this step is completed, execute step S5055.

[0193] S5055: Determine whether Pe is greater than 0.05:

[0194] If yes, execute step S5056;

[0195] If not, execute step S503.

[0196] S5056. If Pe is greater than 0.05, correct the wind curtain angle according to formula (2).

[0197] Where, formula (2): , where A1 is the initial opening angle of the air guide plate 33, A 11 is the target angle between the air guide plate 33 and the air curtain outlet 312, the probability of oil smoke escape is Pe, k and C are both preset constants;

[0198] After this step is completed, the process ends.

[0199] S506: Determine whether T is greater than or equal to TC1:

[0200] Among them, TC1 corresponds to the lowest temperature of the cooking area at the weak gear; the range hood can also be preset to the weak gear, which corresponds to the steaming gear mentioned above.

[0201] If yes, execute step S5061;

[0202] If not, the process ends.

[0203] S5061, enter weak gear.

[0204] After this step is completed, execute step S5062.

[0205] S5062. Open the air curtain, the air curtain angle A3 = 60°.

[0206] After this step is completed, execute step S5063.

[0207] S5063, determine whether there is smoke leakage:

[0208] If yes, execute step S5064;

[0209] If not, the process ends.

[0210] S5064. If smoke is leaking, calculate the probability of smoke escaping Pe.

[0211] After this step is completed, execute step S5065.

[0212] S5065: Determine whether Pe is greater than 0.05:

[0213] If yes, execute step S5066;

[0214] If not, execute step S503.

[0215] S5066. If Pe is greater than 0.05, correct the wind curtain angle according to formula (1).

[0216] Where, formula (1): , where A1 is the initial opening angle of the air guide plate 33, A 11 is the target angle between the air guide plate 33 and the air curtain outlet 312, the probability of oil smoke escape is Pe, k and C are both preset constants;

[0217] After this step is completed, the process ends.

[0218] Note that the above merely describes preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications, combinations and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A control method for an island range hood, characterized in that: The island range hood includes a range hood structure and an air curtain structure. The air curtain structure includes an air curtain air outlet and an air guide plate. The flip angle of the air guide plate is adjustable. The control method includes: Obtaining the working position of the range hood structure; When smoke escape occurs in the range hood structure, the air guide plate is controlled to open at an angle with the air curtain outlet as an initial angle; wherein the initial angle is the angle between the air guide plate and the air curtain outlet corresponding to the current working gear of the range hood structure; Detect the real-time temperature of the pot; Calculating the probability of oil smoke escaping according to the real-time temperature of the cookware and the initial opening angle of the air guide plate; When the probability of oil smoke escaping exceeds a preset probability threshold, the angle between the air guide plate and the air curtain outlet is increased according to the probability of oil smoke escaping and the real-time temperature of the cookware.

2. The control method according to claim 1, characterized in that: Before calculating the probability of oil smoke escaping according to the real-time temperature of the cookware and the initial opening angle of the air guide plate, the method further includes: Obtaining the standard temperature of the cookware at the current working position of the range hood structure; Calculating the probability of oil smoke escaping according to the real-time temperature of the cookware and the initial opening angle of the air guide plate includes: Calculating the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working gear of the range hood structure; The probability of oil smoke escaping is calculated based on the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working position of the range hood structure, and the initial angle at which the air guide plate is opened.

3. The control method according to claim 2, characterized in that: Calculating the probability of oil smoke escaping according to the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working gear of the range hood structure and the initial opening angle of the air guide plate includes: According to the formula , calculate the oil smoke escape probability Pe; wherein ΔT is the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware under the current working gear of the range hood structure, A1 is the initial angle of the air guide plate, and k and C are both preset constants.

4. The control method according to claim 2, characterized in that: When the probability of oil smoke escaping exceeds a preset probability threshold, increasing the angle between the air guide plate and the air curtain outlet according to the probability of oil smoke escaping and the real-time temperature of the cookware, including: When the probability of oil fume escaping exceeds a preset probability threshold, an increase A' in the angle between the air guide plate and the air curtain outlet is calculated based on the probability of oil fume escaping and the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working gear of the range hood structure; Adjust the angle between the air guide plate and the air curtain outlet to the target angle A 11 , where A 11 =A1+A'; wherein A1 is the initial angle at which the air guide plate opens.

5. The control method according to claim 4, characterized in that: When the probability of oil fume escaping exceeds a preset probability threshold, an increase A' in the angle between the air guide plate and the air curtain outlet is calculated based on the probability of oil fume escaping and the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working gear of the range hood structure, including: When the probability of oil smoke escaping exceeds the preset probability threshold, according to the formula , calculate the increase A' in the angle between the air guide plate and the air curtain outlet; where Pe is the probability of oil smoke escape, ΔT is the temperature difference between the real-time temperature of the cookware and the standard temperature of the cookware at the current working gear of the range hood structure, k and C are both preset constants, and B is the preset constant corresponding to the current working gear of the range hood structure.

6. The control method according to claim 5, characterized in that: The working gears of the range hood structure include stir-frying, frying and steaming; When the working gear of the range hood structure is stir-frying, B=B1; when the working gear of the range hood structure is frying, B=B2; when the working gear of the range hood structure is steaming, B=B3; Among them, B1>B2>B3.

7. The control method according to claim 6, characterized in that: B1=0.3, B2=0.2, B3=0.

1.

8. The control method according to claim 3 or 5, characterized in that: k=0.1,C=15.

9. The control method according to claim 1, characterized in that: The working gears of the range hood structure include stir-frying, frying and steaming; When the working gear of the range hood structure is the stir-fry gear, the initial angle is A2; When the working gear of the range hood structure is the frying gear, the initial angle is A3; When the working gear of the range hood structure is the steaming gear, the initial angle is A4; Among them, A2>A3>A4.

10. An island range hood, characterized in that: It includes a range hood structure and an air curtain structure, wherein the air curtain structure includes an air curtain air outlet and an air guide plate, and the flip angle of the air guide plate is adjustable; The island range hood is used to execute the control method of the island range hood as described in any one of claims 1 to 9.

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