Oil accumulation frequency control method, oil accumulation frequency control system and range hood

Abstract

The present application relates to a kind of oil accumulation frequency control method, oil accumulation frequency control system and range hood.The oil accumulation frequency control method includes the following steps: recording the current use data of range hood;Based on the average oil smoke concentration and average blade temperature under current use number, the estimated use number is calculated by oil weight estimation model;The difference between target use number and estimated use number is calculated to determine whether the difference is greater than or equal to zero and less than or equal to preset use number tolerance threshold;In response to less than zero or greater than preset use number tolerance threshold, the required temperature of blade is calculated by oil weight estimation model based on average oil smoke concentration and target use number, and the state of temperature adjustment system is updated to open;In response to greater than or equal to zero and less than or equal to preset use number tolerance threshold, the state of temperature adjustment system is updated to close;And the blade temperature of range hood is adjusted by temperature adjustment system in open state to control oil accumulation frequency.

Description

Technical Field

[0001] This invention relates to the field of kitchen equipment technology, and in particular to a method for controlling the frequency of oil accumulation, a control system for the frequency of oil accumulation, and a range hood. Background Technology

[0002] In recent years, range hoods have gradually become an indispensable kitchen appliance in many households. Their main function is to draw in the cooking fumes generated by the user through the fan system impeller from the air inlet, filter the fumes using the air inlet filter and the impeller, and then exhaust the filtered fumes from the air outlet, thus purifying the kitchen environment. Among these components, the oil cup, as a part that stores condensed oil, has a significant impact on the use of the range hood.

[0003] Currently, the grease cups in range hoods on the market typically employ a relatively simple structure, simply installed at the bottom edge of the hood to collect grease. To prevent tipping over during long-term use, existing grease cups generally have a large capacity, and a larger capacity allows for longer single-use periods. However, prolonged use can cause the grease in the cup to harden and solidify, easily sticking to the cup. Therefore, a larger capacity is not always better. Furthermore, because the grease cups are often used for extended periods, users are likely to forget to empty them after a certain time, severely impacting the user experience. Summary of the Invention

[0004] Therefore, it is necessary to address the problem that users often forget to empty the accumulated oil from existing range hoods after a certain period of use, which seriously affects the user experience. This invention provides a method for controlling the frequency of oil accumulation, a control system for the frequency of oil accumulation, and a range hood.

[0005] In one embodiment of this application, the present invention provides a method for controlling the frequency of oil accumulation, comprising the steps of:

[0006] Record the current usage data of the range hood to obtain the current blade temperature, current number of uses, current oil fume concentration, and the actual weight of oil that the oil cup can hold.

[0007] Based on the average oil fume concentration and average blade temperature under the current usage, the estimated number of usages is calculated using an oil weight prediction model;

[0008] The difference between the target number of uses and the estimated number of uses is calculated as the usage frequency difference, and it is determined whether the usage frequency difference is greater than or equal to zero and less than or equal to the preset usage frequency tolerance threshold.

[0009] In response to the difference in the number of uses being less than zero or greater than the preset tolerance threshold for the number of uses, the required temperature of the blades is calculated based on the average oil fume concentration and the target number of uses using an oil weight prediction model, and the status of the temperature regulation system is updated to be on.

[0010] In response to the difference in the number of uses being greater than or equal to zero and less than or equal to the preset tolerance threshold for the number of uses, the state of the temperature control system is updated to be off; and

[0011] The range hood's blade temperature is adjusted by using a temperature control system that is in the open position to control the frequency of oil accumulation.

[0012] In one embodiment of this application, the step of responding to the difference in the number of uses being less than zero or greater than the preset tolerance threshold for the number of uses, calculating the required temperature for the blades based on the average oil fume concentration and the target number of uses using an oil weight prediction model, and updating the state of the temperature regulation system to be on:

[0013] When the difference in the number of uses is less than zero or greater than the preset tolerance threshold for the number of uses, the average oil fume concentration and the target number of uses are substituted into the oil weight prediction model to calculate the required temperature for the blade.

[0014] Determine whether the required temperature for the blade is within the temperature regulation range of the temperature control system.

[0015] In response to the requirement that the blade's desired temperature is within the temperature regulation range, the target temperature value of the temperature regulation system is set to the required temperature for the blade, thereby activating the temperature regulation system; and

[0016] In response to the fact that the required temperature of the blade is outside the temperature regulation range, the target temperature value of the temperature regulation system is set to the limit value of the temperature regulation range that is closest to the required temperature of the blade, so as to turn on the temperature regulation system.

[0017] In one embodiment of this application, the step of calculating the estimated number of uses based on the average oil fume concentration and average blade temperature under the current number of uses, using an oil weight prediction model, includes the following steps:

[0018] When the number of uses reaches the preset usage threshold for the first time, based on the usage data of the preset usage threshold, the relationship between the weight of oil that can be contained in the oil cup and the blade temperature, the number of uses, and the oil fume concentration is constructed to obtain the oil weight prediction model.

[0019] Based on the current blade temperature, the current number of uses, and the current oil fume concentration, the estimated weight of oil that the oil cup can hold is calculated using the oil weight prediction model.

[0020] Determine whether the absolute rate of change between the actual weight of oil that can be held in the current oil cup and the estimated weight of oil that can be held in the current oil cup is greater than or equal to a preset tolerance coefficient threshold.

[0021] In response to the absolute rate of change being greater than or equal to the preset tolerance coefficient threshold, the oil weight estimation model is constructed using the usage data center based on the current usage frequency, so as to calculate the estimated number of uses through the reconstructed oil weight estimation model; and

[0022] In response to the absolute change rate being less than the preset tolerance coefficient threshold, the estimated number of uses is directly calculated using the oil weight prediction model.

[0023] In one embodiment of this application, the step of responding to the difference in the number of uses being less than zero or greater than the preset tolerance threshold for the number of uses, calculating the required temperature for the blades based on the average oil fume concentration and the target number of uses using an oil weight prediction model, and updating the state of the temperature regulation system to be on, includes the following steps:

[0024] When the temperature control system is updated to the off state, the difference between the target number of uses and the current number of uses is calculated as the remaining number of uses, and it is determined whether the remaining number of uses is less than or equal to the preset remaining number of uses threshold.

[0025] In response to the remaining usage count being less than or equal to the preset remaining usage count threshold, the user is reminded to empty the oil cup after using the remaining usage count; and

[0026] If the remaining number of uses exceeds the preset threshold for remaining uses, skip this reminder.

[0027] In one embodiment of this application, the step of responding to the difference in the number of uses being less than zero or greater than the preset tolerance threshold for the number of uses, calculating the required temperature of the blades based on the average oil fume concentration and the target number of uses using an oil weight prediction model, and updating the state of the temperature regulation system to be on, further includes the step of:

[0028] When the remaining number of uses is less than or equal to the preset remaining usage threshold, the usage count adjustment system is set to off and the current usage count is set to zero to end this control.

[0029] In one embodiment of this application, the oil accumulation frequency control method further includes the step of:

[0030] When a user turns on the range hood, it checks whether a target number of uses has been set: if yes, the setting is skipped; if no, the target number of uses is set to the default value.

[0031] When the range hood is activated at a certain speed setting, the temperature control system operates according to the latest status until the range hood finishes its operation; and

[0032] Determine if the usage frequency adjustment system is off: if yes, remind the user to empty the oil cup periodically; if no, determine if the current usage frequency is greater than or equal to the preset usage frequency threshold.

[0033] In one embodiment of this application, the step of determining whether the usage frequency adjustment system is off: if yes, then periodically reminding the user to empty the oil cup; if no, then determining whether the current usage frequency is greater than or equal to a preset usage frequency threshold includes the following steps:

[0034] When the usage count adjustment system is off, the current usage count is updated according to the usage situation, reminding the user to empty the oil cup after using the difference between the preset remaining usage count threshold and the current usage count.

[0035] Determine whether the oil in the oil cup has been poured out;

[0036] In response to the oil being poured out of the oil cup, the usage count adjustment system is set to "on" and the current usage count is set to zero; and

[0037] The control operation ends when the oil in the oil cup is not poured out.

[0038] In one embodiment of this application, the step of determining whether the usage frequency adjustment system is off: if yes, then periodically reminding the user to empty the oil cup; if no, then determining whether the current usage frequency is greater than or equal to a preset usage frequency threshold, further includes the step of:

[0039] Determine whether the current number of uses is greater than or equal to the preset remaining number of uses threshold. If so, proceed with the step of determining whether the oil in the oil cup has been poured out; otherwise, end the current control.

[0040] According to another aspect of this application, this application further provides an oil accumulation frequency control system, comprising:

[0041] processor; and

[0042] A storage medium storing computational program instructions, which, when executed by the processor, cause the processor to perform the oil accumulation frequency control method described above.

[0043] According to another aspect of this application, this application further provides a range hood, comprising:

[0044] The main body of the range hood; and

[0045] The aforementioned oil accumulation frequency control system is configured on the main body of the range hood to control the oil accumulation frequency of the main body of the range hood.

[0046] In one embodiment of this application, the range hood body includes a housing, a fan system assembled in the housing, and a temperature regulation system disposed in the fan system to regulate the blade temperature when the fan system is in operation.

[0047] In one embodiment of this application, the fan system includes a volute and an impeller rotatably disposed within the volute; the temperature regulation system includes a heat-conducting plate fixedly connected to the impeller, heat sinks spaced apart from the heat-conducting plate, and at least one set of cooling blocks disposed between the heat-conducting plate and the heat sink; each set of cooling blocks includes two independently operating cooling blocks, and each cooling block has a cold end face and a hot end face arranged opposite to each other; the cold end face and the hot end face of one cooling block respectively contact the heat-conducting plate and the heat sink, and the cold end face and the hot end face of the other cooling block respectively contact the heat sink and the heat-conducting plate.

[0048] In summary, when the difference between the target number of uses and the estimated number of uses is greater than or equal to zero and less than or equal to the preset usage tolerance threshold, it indicates that the oil in the oil cup will reach the emptying condition at the set time, meaning the existing oil accumulation frequency does not need adjustment. Conversely, when the difference between the target number of uses and the estimated number of uses is less than zero or greater than the preset usage tolerance threshold, it indicates that the oil in the oil cup will reach the emptying condition before or after the set time, meaning the existing oil accumulation frequency needs adjustment. Simultaneously, since the oil accumulation rate in the oil cup is related to the blade temperature, the oil accumulation frequency control method of this application can activate the temperature regulation system to adjust the blade temperature when the oil in the oil cup reaches the emptying condition before or after the set time. This ensures that the adjusted blade temperature matches the required temperature of the blade, thereby regulating the oil accumulation frequency and ensuring that the oil in the oil cup reaches the emptying condition at the set time, facilitating the cultivation of users' habit of regularly emptying the oil cup. Attached Figure Description

[0049] Figure 1 This is a flowchart illustrating an oil accumulation frequency control method according to an embodiment of this application;

[0050] Figure 2 A flowchart illustrating the target temperature setting step in the oil accumulation frequency control method according to the above embodiments of this application is shown.

[0051] Figure 3 A flowchart illustrating the estimated usage count calculation step in the oil accumulation frequency control method according to the above embodiments of this application is shown.

[0052] Figure 4A flowchart illustrating the remaining number determination step in the oil accumulation frequency control method according to the above embodiments of this application is shown.

[0053] Figure 5 A preferred example of the oil accumulation frequency control method according to the above embodiments of this application is shown;

[0054] Figure 6 A flowchart illustrating the oil cup emptying reminder step in the oil accumulation frequency control method according to the above-described preferred example of this application is shown.

[0055] Figure 7 A schematic diagram of the control process of the oil accumulation frequency control method according to the above-described preferred example of this application is shown;

[0056] Figure 8 This is a block diagram of an oil accumulation frequency control system according to an embodiment of this application;

[0057] Figure 9 This is a block diagram of a range hood according to an embodiment of this application;

[0058] Figure 10 A schematic diagram of the structure of the main body of the range hood according to the above embodiments of this application is shown;

[0059] Figure 11 A perspective view of the fan system in the main body of a range hood according to the above embodiments of this application is shown;

[0060] Figure 12 An exploded schematic diagram of the fan system and temperature control system according to the above embodiments of this application is shown;

[0061] Figure 13 A cross-sectional schematic diagram of a fan system and a temperature control system according to the above embodiments of this application is shown.

[0062] Explanation of main component symbols: 1. Range hood; 10. Range hood body; 11. Shell; 12. Fan system; 121. Volute; 122. Impeller; 1220. Blade; 13. Temperature control system; 131. Heat conduction plate; 132. Heat sink; 133. Cooling block; 1331. Cold end face; 1332. Hot end face; 20. Oil accumulation frequency control system; 21. Processor; 22. Storage medium.

[0063] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a more detailed explanation of the present invention. Detailed Implementation

[0064] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0070] Considering that existing range hoods typically use large-capacity oil cups for long-term use without needing to be emptied, while larger capacity allows for longer single-use periods, prolonged use can cause the grease in the cup to harden and solidify. This not only makes it prone to sticking to the cup, but also makes it easy for users to forget to empty the grease after a certain period of use, severely impacting the user experience. Therefore, this application provides a method for controlling the frequency of grease accumulation, a control system for grease accumulation frequency, and a range hood. This system can control the frequency of grease accumulation in the range hood, ensuring that the grease in the cup reaches the emptying condition within a set time, thus encouraging users to develop the habit of regularly emptying the grease cup.

[0071] Specifically, refer to Figure 1 As shown, one embodiment of this application provides a method for controlling oil accumulation frequency, including the following steps:

[0072] S100: Records the current usage data of the range hood to obtain the current blade temperature, current number of uses, current oil fume concentration, and the actual weight of oil that the oil cup can hold.

[0073] S200: Based on the average oil fume concentration and average blade temperature under the current number of uses, the estimated number of uses is calculated through the oil weight prediction model;

[0074] S300: Calculate the difference between the target number of uses and the estimated number of uses as the usage number difference, and determine whether the usage number difference is greater than or equal to zero and less than or equal to the preset usage number tolerance threshold.

[0075] S400: In response to the difference in the number of uses being less than zero or greater than the preset tolerance threshold for the number of uses, the required temperature of the blades is calculated based on the average oil fume concentration and the target number of uses using the oil weight prediction model, and the status of the temperature regulation system is updated to be on.

[0076] S500: In response to the difference in the number of uses being greater than or equal to zero and less than or equal to the preset tolerance threshold for the number of uses, update the state of the temperature control system to be off; and

[0077] S600: The temperature of the range hood blades is adjusted by the temperature control system when it is in the open state to control the frequency of oil accumulation.

[0078] More specifically, in step S100 of this application: the current usage data may include, but is not limited to, the current number of uses n1, the current blade temperature d1, the current usage duration t3, the current oil fume concentration c1, and the actual weight of oil that the oil cup can hold g1. It is understood that the blade temperature d1 mentioned in this application refers to the temperature at which the range hood maintains its temperature for the longest time during a single operation; the average oil fume concentration c1 refers to the arithmetic mean of the oil fume concentration values ​​within the usage duration t3, i.e. Where c i t represents the concentration of oil fume collected in a single sampling. 3i This represents the data collection time interval.

[0079] In step S200 of this application: the oil weight estimation model mentioned in this application refers to the function g(d,n,c), which is a k1-degree polynomial function of blade temperature d, number of uses n, and oil fume concentration c, where k1 is the minimum natural number order required to make the variance of the oil weight g that the oil cup can hold less than a preset variance threshold p1 when establishing the function g(d,n,c). It is understood that the preset variance threshold p1 mentioned in this application is a natural number related to the measured oil weight data, and is a preset value. It can be, but is not limited to, a real number greater than zero such as 10 or 11, and is specifically determined by factors such as the shape and performance of the range hood.

[0080] Optionally, the oil weight prediction model g(d,n,c) mentioned in this application is a relationship between the oil weight g that can be held in the oil cup and the blade temperature d, the number of uses n, and the oil fume concentration c, established based on the recorded n0 usage data when the current number of uses n1 first reaches the preset usage threshold n0. It can be understood that the preset usage threshold n0 mentioned in this application refers to how many times the oil weight prediction model is established after which it can be established, which can be one week, i.e., n0 = 3 * 7 = 21 times; or one month, i.e., n0 = 3 * 30 = 90 times.

[0081] Thus, the average oil fume concentration c under the current number of uses n1 is obtained. a1 (i.e., the average value of the oil fume concentration c1 in n1 times) and the average blade temperature d a1 After calculating the average blade temperature d1 over n1 cycles (i.e., the average value of the blade temperature d1 over n1 cycles), the estimated number of uses n can be calculated using this oil weight prediction model. e1It is understood that the initial state of the current number of uses n1 mentioned in this application is zero. One use is defined as: the duration of the range hood's operation is longer than the preset duration threshold t0, and the time interval between stopping and the next start is greater than the preset interval time threshold t1; that is: if the time from start to stop is less than the preset duration threshold t0, it is not counted as a number of uses; if the time interval between stopping and the next start is less than the preset interval time threshold t1, it is counted as one number of uses.

[0082] It is worth noting that when the target is used n times goa1 Compared with the estimated number of times n e1 The difference between them is greater than or equal to zero and less than or equal to the preset usage tolerance threshold n2, i.e., 0 ≤ n goa1 -n e1 When n ≤ n2, it indicates that the oil in the oil cup can reach the pouring condition at the set time, meaning that the existing oil accumulation frequency does not need to be adjusted; while when the target number of uses n goa1 Compared with the estimated number of times n e1 The difference between them is less than zero or greater than the preset usage tolerance threshold n2, i.e., n goa1 -n e1 <0, or n goa1 -n e1 When the value is greater than n², it indicates that the oil in the oil cup will reach the pouring condition before or after the set time. This means the existing oil accumulation frequency needs to be adjusted to ensure the oil in the cup reaches the pouring condition at the set time, thus cultivating the user's habit of regularly emptying the oil cup. It is understood that the target usage frequency n mentioned in this application... goa1 It can be preset to three months, i.e., n goa1 =90 * 3 = 270 times, or four months, i.e., n goa1 =90*4=360 times; The preset usage tolerance threshold n2 mentioned in this application can be preset to five days, i.e., n2=3*5=15 times, or seven days, i.e., n2=3*7=21 times.

[0083] Furthermore, since the oil accumulation rate in the oil cup is related to the blade temperature, the oil accumulation frequency control method of this application can activate the temperature regulation system to adjust the blade temperature when the oil in the oil cup reaches the pouring condition before or after a set time, so that the adjusted blade temperature is close to the required blade temperature d. e1 The system is designed to adjust the frequency of oil accumulation, ensuring that the oil in the cup reaches the pouring condition at the set time, thus helping users develop the habit of regularly emptying the oil cup.

[0084] For example, such as Figure 2 As shown, step S400 of the oil accumulation frequency control method of this application may include the following steps:

[0085] S410: When the difference in the number of uses is less than zero or greater than the preset tolerance threshold for the number of uses, the average oil fume concentration and the target number of uses are substituted into the oil weight prediction model to calculate the required temperature for the blade.

[0086] S420: Determine whether the required temperature for the blade is within the temperature regulation range of the temperature regulation system;

[0087] S430: In response to the required temperature of the blade being within the temperature regulation range, the target temperature value of the temperature regulation system is set to the required temperature of the blade, thereby activating the temperature regulation system; and

[0088] S440: In response to the fact that the required temperature of the blade is outside the temperature regulation range, the target temperature value of the temperature regulation system is set to the limit value of the temperature regulation range that is closest to the required temperature of the blade, so as to turn on the temperature regulation system.

[0089] Thus, in step S600 of this application: when the range hood is working, the temperature control system, which is in the open state, can adjust the temperature of the range hood blades to the target temperature value, achieving the required condensation effect, enhancing adaptability to the usage environment, and ensuring that the oil in the oil cup reaches the conditions for pouring at the set time. It can be understood that, taking [d2, d3] as an example of this temperature control range: when the required blade temperature d... e1 When the temperature is less than the left limit value d2, the target temperature value d of the temperature control system is... goa1 Set as the left limit value d2; when the required temperature d of the blade e1 When the temperature exceeds the right limit value d3, the target temperature value d of the temperature control system is... goa1 Set as the right limit value d3.

[0090] In addition, the oil accumulation frequency control method of this application can also adjust the blade temperature through the temperature regulation system to regulate the amount of oil at different usage times, so that the overall oil accumulation is in a steady growth, thereby improving the stability of the whole machine operation.

[0091] It is worth noting that although the above oil weight prediction model g(d,n,c) is established based on the recorded n0 usage data, the usage environment of the range hood will be different each time it is used, and there may even be significant differences. Therefore, in order to ensure that the oil weight prediction model g(d,n,c) can adapt to various usage environments, it is necessary to update the oil weight prediction model g(d,n,c) according to the current usage environment.

[0092] Specifically, such as Figure 3 As shown, step S200 of the oil accumulation frequency control method of this application may include the following steps:

[0093] S210: When the number of uses reaches the preset usage threshold for the first time, based on the recorded usage data of the preset usage threshold, construct the relationship between the weight of oil that can be contained in the oil cup and the blade temperature, the number of uses, and the concentration of oil fumes, so as to obtain the oil weight prediction model.

[0094] S220: Based on the current blade temperature, the current number of uses, and the current oil fume concentration, the estimated weight of oil that can be contained in the oil cup is calculated using the oil weight prediction model.

[0095] S230: Determine whether the absolute rate of change between the actual weight of oil that can be contained in the current oil cup and the estimated weight of oil that can be contained in the current oil cup is greater than or equal to the preset tolerance coefficient threshold.

[0096] S240: In response to the absolute rate of change being greater than or equal to the preset tolerance coefficient threshold, the oil weight estimation model is reconstructed using usage data from the current number of uses, so as to calculate the estimated number of uses using the reconstructed oil weight estimation model; and

[0097] S250: In response to the absolute change rate being less than the preset tolerance coefficient threshold, the estimated number of uses is calculated directly through the oil weight prediction model.

[0098] It is understood that the absolute rate of change mentioned in this application refers to the actual weight of oil g1 that the current oil cup can hold and the estimated weight of oil g1 that the current oil cup can hold. e1 The absolute difference between them |g1-g e1 |The estimated weight of oil that the current oil cup can hold (g) e1 The ratio between |g1-g e1 | / g e1 .

[0099] Furthermore, when the absolute rate of change is less than the preset tolerance coefficient threshold k2, it indicates that the oil weight prediction model is adaptable to the current usage environment and does not need to be updated. Conversely, when the absolute rate of change is greater than or equal to the preset tolerance coefficient threshold k2, it indicates that the oil weight prediction model is not adaptable to the current usage environment and needs to be reconstructed using the latest usage data to update the minimum natural number order k1 of the oil weight prediction model. It is understood that the preset tolerance coefficient threshold k2 mentioned in this application is a preset value, and its range can be, but is not limited to, 0.03 to 0.1, specifically related to the actual oil weight measurement error of the system.

[0100] It is worth noting that although the above-mentioned oil accumulation frequency control method can control the oil in the oil cup to reach the emptying condition at a set time, so that users can develop the habit of emptying the oil cup regularly, it cannot prevent users from forgetting to empty the oil cup. Therefore, the oil accumulation frequency control method of this application can also realize timed reminders for users to empty the oil cup, so as to improve the overall control capability of oil accumulation in the oil cup during use.

[0101] Specifically, such as Figure 4 As shown, step S500 of the oil accumulation frequency control method of this application may include the following steps:

[0102] S510: When the state of the temperature control system is updated to the off state, calculate the difference between the target number of uses and the current number of uses as the remaining number of uses, and determine whether the remaining number of uses is less than or equal to the preset remaining number of uses threshold.

[0103] S520: In response to the remaining usage count being less than or equal to the preset remaining usage count threshold, remind the user to empty the oil cup after using the remaining usage count; and

[0104] S530: In response to the remaining number of uses exceeding the preset remaining usage threshold, skip this reminder.

[0105] It is worth noting that the preset remaining usage threshold n3 mentioned in this application is suggested to be between three and ten days, that is, between nine and thirty times; for example, n3 = 3 * 7 = 21 times.

[0106] More specifically, such as Figure 4 As shown, step S500 of the oil accumulation frequency control method of this application may further include the following step:

[0107] S540: When the remaining number of uses is less than or equal to the preset remaining number of uses threshold, the status of the use count adjustment system is set to off, and the current number of uses is set to zero to end this control.

[0108] It is worth mentioning that, in a preferred example of this application, such as Figure 5 As shown, the oil accumulation frequency control method of this application may further include the following steps:

[0109] S700: When a user turns on the range hood, it checks whether the target number of uses has been set: if yes, the setting is skipped; if no, the target number of uses is set to the default value.

[0110] S800: When a certain setting of the range hood is activated, the temperature control system operates according to the latest status until the range hood finishes its operation; and

[0111] S900: Determine whether the usage frequency adjustment system is off: if yes, remind the user to empty the oil cup periodically; if no, determine whether the current usage frequency is greater than or equal to the preset usage frequency threshold.

[0112] Optionally, such as Figure 6 As shown, step S900 of the oil accumulation frequency control method of this application includes the following steps:

[0113] S910: When the usage count adjustment system is in the off state, update the current usage count according to the usage situation, and remind the user to pour out the oil in the oil cup after using the difference between the preset remaining usage count threshold and the current usage count.

[0114] S920: Determine whether the oil in the oil cup has been poured out;

[0115] S930: In response to the oil in the oil cup being poured out, the state of the usage frequency adjustment system is set to open, and the current usage frequency is set to zero; and

[0116] S940: In response to the fact that the oil in the oil cup has not been poured out, the control ends.

[0117] Optionally, step S900 of the oil accumulation frequency control method of this application further includes the step of determining whether the current number of uses is greater than or equal to the preset remaining number of uses threshold between steps S910 and S920; if yes, then step S920 is executed; if no, the control is terminated.

[0118] In summary, as Figure 7 As shown, the specific control process of the oil accumulation frequency control method of this application is as follows:

[0119] S1. The user turns on the range hood;

[0120] S2. Determine if the user has set a target number of uses n. goa1 If yes, proceed to S4; otherwise, proceed to S3.

[0121] S3, let n goa1 This is the default value; where n goa1 The target number of uses set by the user; the default value is the number of uses within a preset duration.

[0122] S4. The user starts a range hood at a certain setting, in which the fan system works normally and the temperature control system works according to the latest status (initially off). After the fan system finishes working, the user turns off the fan system to enter S5.

[0123] S5. Determine if the usage frequency adjustment system is off: if yes, proceed to S6; otherwise, proceed to S10.

[0124] S6. Update the current number of uses n1 based on usage, and remind the user to empty the oil cup after n3-n1 uses; proceed to S7; where n3 is the preset threshold for remaining uses; n1 is the current number of uses, initially set to 0.

[0125] S7. Determine if the current number of uses n1 is greater than n3. If it is, proceed to S8; otherwise, proceed to S29.

[0126] S8. Determine if the user has poured out oil from the oil cup. If yes, proceed to S9; otherwise, proceed to S29.

[0127] S9. Set n1 to 0, and set the usage frequency adjustment system to "on"; proceed to S10.

[0128] S10. Determine whether the current number of uses n1 is greater than or equal to n0; where n0 is a preset threshold for the number of uses; if yes, proceed to S12, otherwise proceed to S11.

[0129] S11. Update the current number of uses n1 based on user usage, and record the blade temperature d1, usage duration t3, oil fume concentration c1, and the actual weight of oil that the oil cup can hold g1 for each use, then proceed to S29; where blade temperature d1 is the temperature that the range hood maintains for the longest time during a single operation; oil fume concentration c1 is the arithmetic average of the oil fume concentration values ​​at the range hood inlet within the usage duration t3.

[0130] S12. When n0 is reached for the first time, the relationship between g1 and d1 / n1 / c1 is established based on the recorded n0 usage data, that is, the g1(d1,n1,c1) function is obtained. If it is not the first time, it directly enters S13.

[0131] S13. Record the blade temperature d1, number of uses n1, oil fume concentration c1, and actual oil weight g1 that the oil cup can hold during current use, and proceed to S14.

[0132] S14. Calculate the estimated weight of oil that the current oil cup can hold using the g1 function with the current d1 / n1 / c1. e1 Enter S15; g e1 The estimated oil cup weight that can still hold is calculated using the g1 function based on the current d1 / n1 / c1 data;

[0133] S15, Determine (current g1-g) e1 The absolute value of ) divided by g e1 Is it greater than or equal to k2? If yes, proceed to S16; otherwise, proceed to S17. Where k2 is a preset tolerance coefficient threshold.

[0134] S16. Rebuild g1(d1,n1,c1) using the latest data, update k1, and proceed to S17.

[0135] S17. Calculate the average oil fume concentration c from the latest n1 uses. a1 Average leaf temperature d a1 Enter S18;

[0136] S18. Let c1 = c a1 And d1 = d a1 The estimated number of uses n is calculated based on the g1 function. e1 Enter S19;

[0137] S19, Determine n goa1 -n e1 Is it greater than 0 and less than or equal to n2? If yes, proceed to S20; otherwise, proceed to S24. Where n2 is the preset tolerance threshold for the number of uses.

[0138] S20, Update the temperature regulation system status to off, then proceed to S21;

[0139] S21. Determine n goa1 -Is the latest n1 less than or equal to n3? If yes, proceed to S22; otherwise, proceed to S29.

[0140] S22. Remind the user in (n goa1 - After the latest n1) times of use, pour the oil from the oil cup; proceed to S23;

[0141] S23. Set the usage frequency adjustment system status to off, and set n1 = 0; proceed to S29;

[0142] S24. Let c1 = c a1 And n1 = n goa1 The required blade temperature d is calculated using the g1 function. e1 Enter S25;

[0143] S25, Determine d e1 If it falls within the temperature regulation range [d2,d3], proceed to S27 if yes, otherwise proceed to S26;

[0144] S26. Set the target value d for the temperature control system. goa1 The closest to d in d2 or d3 e1 One of them entered S28;

[0145] S27. Set the target value d for the temperature control system. goa1 =d e1 Enter S28;

[0146] S28. Update the temperature control system status to "on"; proceed to S29.

[0147] S29, End.

[0148] It is worth mentioning that, according to another aspect of this application, such as Figure 8 As shown, one embodiment of this application further provides an oil accumulation frequency control system 20, which may include a processor 21 and a storage medium 22. The storage medium 22 stores calculation program instructions, which, when executed by the processor 21, cause the processor 21 to perform the above-described oil accumulation frequency control method.

[0149] It is understood that the processor 21 may be a central processing unit (CPU) or other processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the oil accumulation frequency control system 20 to perform desired functions. The storage medium 22 may include one or more computational program products, which may include various forms of computationally readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may, for example, include random access memory (RAM) and / or cache memory. The non-volatile memory may, for example, include read-only memory (ROM), hard disk, flash memory, etc. One or more computational program instructions may be stored on the computationally readable storage medium, and the processor 21 may execute these program instructions to implement the methods of the various embodiments of the present invention described above and / or other desired functions.

[0150] Of course, for the sake of simplicity, Figure 8 Only some of the components of the oil accumulation frequency control system 20 relevant to the present invention are shown in this diagram; components such as buses, input / output interfaces, etc., are omitted. In addition, the oil accumulation frequency control system 20 may include any other suitable components depending on the specific application.

[0151] It is worth mentioning that, according to another aspect of this application, such as Figures 9 to 13 As shown, one embodiment of this application further provides a range hood 1, which may include a range hood body 10 and the aforementioned oil accumulation frequency control system 20. The oil accumulation frequency control system 20 is configured on the range hood body 10 to control the oil accumulation frequency of the range hood body 10, so as to control the oil in the oil cup to reach the emptying condition at a set time, which helps users develop the habit of emptying the oil cup regularly and reduces the probability of users forgetting to empty it.

[0152] Specifically, such as Figures 10 to 13As shown, the main body 10 of the range hood may include a housing 11, a fan system 12 assembled in the housing 11, and a temperature regulation system 13 disposed in the fan system 12, so as to regulate the blade temperature during the operation of the fan system 12, thereby regulating the frequency of oil accumulation. It is understood that the main body 10 of the range hood of this application may also include, but is not limited to, components such as an oil sludge box or an oil cup to assist in completing the functions of oil fume extraction and self-cleaning, which will not be elaborated here.

[0153] More specifically, such as Figure 11 As shown, the fan system 12 may include a volute 121 and an impeller 122 rotatably disposed within the volute 121. Figure 12 and Figure 13 As shown, the temperature control system 13 may include a heat-conducting plate 131 fixedly connected to the impeller 122, heat sinks 132 spaced apart from the heat-conducting plate 131, and at least one set of cooling blocks 133 disposed between the heat-conducting plate 131 and the heat sink 132. Each set of cooling blocks 133 includes two independently operating cooling blocks 133, and each cooling block 133 has a cold end face 1331 and a hot end face 1332 arranged opposite to each other. The cold end face 1331 and the hot end face 1332 of one cooling block 133 respectively contact the heat-conducting plate 131 and the heat sink 132, and the cold end face 1331 and the hot end face 1332 of the other cooling block 133 respectively contact the heat sink 132 and the heat-conducting plate 131. In this way, one of the cooling blocks 133 in each set is responsible for heating the blades of the impeller 122, and the other is responsible for cooling the blades of the impeller 122, so as to adjust the blade temperature as needed.

[0154] It is worth noting that, such as Figure 12 and Figure 13 As shown, the impeller 122 has multiple blades 1220 arranged circumferentially and extending axially; the heat-conducting plate 131 is fixedly connected to one end of the blades 1220. Thus, when the impeller 122 rotates within the volute 121, the gas inside the volute 121 is driven by the blades 1220 to be discharged from the air outlet of the volute 121, creating a negative pressure in the central region of the volute 121. This negative pressure draws in external oil fumes through the air inlet of the volute 121, achieving the effect of oil fume extraction.

[0155] It is understood that since the temperature regulation system 13 rotates with the rotation of the impeller 122, each cooling block 133 of this application can be provided with a conductive terminal so that current can be introduced into the cooling block through the conductive groove on the conductive ring (not shown in the figure), and then the blade can be heated or cooled by controlling the current flowing into different cooling blocks. This application will not elaborate further on this.

[0156] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0157] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A method for controlling the frequency of oil accumulation, characterized in that, Including the following steps: Record the current usage data of the range hood to obtain the current blade temperature, current number of uses, current oil fume concentration, and the actual weight of oil that the oil cup can hold. Based on the average oil fume concentration and average blade temperature under the current usage, the estimated number of usages is calculated using an oil weight prediction model; The difference between the target number of uses and the estimated number of uses is calculated as the usage frequency difference, and it is determined whether the usage frequency difference is greater than or equal to zero and less than or equal to the preset usage frequency tolerance threshold. In response to the difference in the number of uses being less than zero or greater than the preset tolerance threshold for the number of uses, the required temperature of the blades is calculated based on the average oil fume concentration and the target number of uses using an oil weight prediction model, and the status of the temperature regulation system is updated to be on. In response to the difference in the number of uses being greater than or equal to zero and less than or equal to the preset tolerance threshold for the number of uses, the state of the temperature control system is updated to be off; as well as The temperature of the range hood blades is adjusted by the temperature control system in the open state, so that the adjusted blade temperature matches the required temperature of the blades, thereby controlling the frequency of oil accumulation and ensuring that the oil in the current oil cup reaches the emptying condition at the set time.

2. The oil accumulation frequency control method according to claim 1, characterized in that, The step of responding to a difference in the number of uses being less than zero or greater than the preset tolerance threshold for the number of uses, calculating the required temperature for the blades based on the average oil fume concentration and the target number of uses using an oil weight prediction model, and updating the status of the temperature control system to "on": When the difference in the number of uses is less than zero or greater than the preset tolerance threshold for the number of uses, the average oil fume concentration and the target number of uses are substituted into the oil weight prediction model to calculate the required temperature for the blade. Determine whether the required temperature for the blade is within the temperature regulation range of the temperature control system. In response to the fact that the required temperature of the blade is within the temperature regulation range, the target temperature value of the temperature regulation system is set to the required temperature of the blade, and the temperature regulation system is turned on. as well as In response to the fact that the required temperature of the blade is outside the temperature regulation range, the target temperature value of the temperature regulation system is set to the limit value of the temperature regulation range that is closest to the required temperature of the blade, so as to turn on the temperature regulation system.

3. The oil accumulation frequency control method according to claim 1, characterized in that, The step of calculating the estimated number of uses based on the average oil fume concentration and average blade temperature under the current number of uses, using an oil weight prediction model, includes the following steps: When the number of uses reaches the preset usage threshold for the first time, based on the usage data of the preset usage threshold, the relationship between the weight of oil that can be contained in the oil cup and the blade temperature, the number of uses, and the oil fume concentration is constructed to obtain the oil weight prediction model. Based on the current blade temperature, the current number of uses, and the current oil fume concentration, the estimated weight of oil that the oil cup can hold is calculated using the oil weight prediction model. Determine whether the absolute rate of change between the actual weight of oil that can be held in the current oil cup and the estimated weight of oil that can be held in the current oil cup is greater than or equal to a preset tolerance coefficient threshold. In response to the absolute change rate being greater than or equal to the preset tolerance coefficient threshold, the oil weight prediction model is constructed using the data center of the current number of uses, so as to calculate the estimated number of uses through the reconstructed oil weight prediction model; as well as In response to the absolute change rate being less than the preset tolerance coefficient threshold, the estimated number of uses is directly calculated using the oil weight prediction model.

4. The oil accumulation frequency control method according to claim 1, characterized in that, The step of responding to a difference in the number of uses being less than zero or greater than a preset tolerance threshold for the number of uses, calculating the required temperature for the blades based on the average oil fume concentration and the target number of uses using an oil weight prediction model, and updating the state of the temperature control system to "on", includes the following steps: When the temperature control system is updated to the off state, the difference between the target number of uses and the current number of uses is calculated as the remaining number of uses, and it is determined whether the remaining number of uses is less than or equal to the preset remaining number of uses threshold. In response to the remaining number of uses being less than or equal to the preset remaining usage threshold, the user is reminded to empty the oil cup after using the remaining number of uses; as well as If the remaining number of uses exceeds the preset threshold for remaining uses, skip this reminder.

5. The oil accumulation frequency control method according to claim 4, characterized in that, The step of responding to the difference in the number of uses being less than zero or greater than the preset tolerance threshold for the number of uses, calculating the required temperature for the blades based on the average oil fume concentration and the target number of uses using an oil weight prediction model, and updating the state of the temperature regulation system to be on, further includes the step of: When the remaining number of uses is less than or equal to the preset remaining usage threshold, the usage count adjustment system is set to off and the current usage count is set to zero to end this control.

6. The oil accumulation frequency control method according to any one of claims 1 to 5, characterized in that, It also includes the following steps: When a user turns on the range hood, it checks whether a target number of uses has been set: if yes, the setting is skipped; if no, the target number of uses is set to the default value. When a certain setting of the range hood is activated, the temperature control system operates according to the latest status until the range hood finishes its work. as well as Determine if the usage frequency adjustment system is off: if yes, remind the user to empty the oil cup periodically; if no, determine if the current usage frequency is greater than or equal to the preset usage frequency threshold.

7. The oil accumulation frequency control method according to claim 6, characterized in that, The step of determining whether the usage frequency adjustment system is off: if yes, then periodically reminding the user to empty the oil cup; if no, then determining whether the current usage frequency is greater than or equal to a preset usage frequency threshold includes the following steps: When the usage count adjustment system is off, the current usage count is updated according to the usage situation, reminding the user to empty the oil cup after using the difference between the preset remaining usage count threshold and the current usage count. Determine whether the oil in the oil cup has been poured out; In response to the oil in the oil cup being poured out, the state of the usage frequency adjustment system is set to "on", and the current usage frequency is set to zero; as well as The control operation ends when the oil in the oil cup is not poured out.

8. The oil accumulation frequency control method according to claim 7, characterized in that, The step of determining whether the usage frequency adjustment system is off: if yes, then periodically reminding the user to empty the oil cup; if no, then determining whether the current usage frequency is greater than or equal to a preset usage frequency threshold, further includes the following steps: Determine whether the current number of uses is greater than or equal to the preset remaining number of uses threshold. If so, proceed with the step of determining whether the oil in the oil cup has been poured out; otherwise, end the current control.

9. An oil accumulation frequency control system, characterized in that, include: processor; and A storage medium storing computational program instructions, which, when executed by the processor, cause the processor to perform the oil accumulation frequency control method as described in any one of claims 1 to 8.

10. A range hood, characterized in that, include: The main body of the range hood; and The oil accumulation frequency control system as described in claim 9, wherein the oil accumulation frequency control system is configured on the range hood body to control the oil accumulation frequency of the range hood body.

11. The range hood according to claim 10, characterized in that, The range hood body includes a housing, a fan system assembled in the housing, and a temperature regulation system disposed in the fan system to regulate the blade temperature when the fan system is in operation.

12. The range hood according to claim 11, characterized in that, The fan system includes a volute and an impeller rotatably disposed within the volute; the temperature control system includes a heat-conducting plate fixedly connected to the impeller, heat sinks spaced apart from the heat-conducting plate, and at least one set of cooling blocks disposed between the heat-conducting plate and the heat sink; each set of cooling blocks includes two independently operating cooling blocks, and each cooling block has a cold end face and a hot end face arranged opposite to each other; the cold end face and the hot end face of one cooling block respectively contact the heat-conducting plate and the heat sink, and the cold end face and the hot end face of the other cooling block respectively contact the heat sink and the heat-conducting plate.

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