Exhaust control method and device of range hood and kitchen appliance

Abstract

According to the exhaust control method and device of the range hood and the kitchen appliance, in the starting and running process of the range hood, the weight of current oil smoke liquid drops on a filter screen in a fan device is detected, and the current air quality at an air outlet of an inner exhaust module is detected. Whether the current initial exhaust mode is switched or not is judged according to the weight of the current oil smoke liquid drops or the current air quality, and the initial exhaust module is the exhaust mode determined when the range hood is started and is one of the internal exhaust mode and the external exhaust mode. And when it is judged that switching is not needed, exhausting continues to be conducted in the initial exhausting mode, and if it is judged that switching is needed, another exhausting mode except the initial exhausting mode is switched to conduct exhausting. According to the scheme, the exhaust mode of the range hood is determined on the basis of the weight of the oil fume liquid drops condensed on the filter screen or the air quality at the air outlet of the inner exhaust module, and the problem that the air quality in the kitchen space is reduced can be avoided on the basis of guaranteeing effective oil fume exhaust.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to an exhaust control method and device for a range hood and a kitchen appliance. Background Art

[0002] As people pay more and more attention to healthy eating, light cooking represented by steaming and boiling has gradually become a fashion, so people have also put forward new demands on cooking appliances. Current cooking appliances are mainly high-power stoves that can achieve high-fire cooking, and high fire means a lot of oil smoke, which is also the fundamental reason why range hoods and stoves have developed to the current high-power and high-air volume mode.

[0003] With the widespread emergence of the habit of light cooking, the corresponding non-open flame cooking method based on electric stoves has emerged. Since the heating temperature of electric stoves is lower than that of open flames, the amount of oil smoke produced by electric stoves is much lower than that of open flame stoves. In addition, due to the low temperature, the initial rising speed of the oil smoke is also much lower.

[0004] Because light cooking produces a small amount of oil smoke and the initial rising speed of oil smoke is low, the effective air volume requirement for the range hood is much smaller than that of the current range hoods with open flame heating. Based on this, an island table all-in-one machine combining an electric stove and a range hood has appeared. The electric stove and the range hood are integrated and embedded in the stove surface. The oil smoke generated is adsorbed by the internal filter module, and the adsorbed air is discharged into the kitchen space, forming a flowing internal circulation.

[0005] However, the current island countertops have relatively simple functions, and the exhaust scheme is basically based on a single internal circulation, which cannot meet the needs of oil fume extraction in actual scenarios. This may lead to defects such as incomplete oil fume extraction and reduced air quality in the kitchen space. Summary of the invention

[0006] The purpose of the embodiments of the present invention is to provide an exhaust control method and device for a range hood and a kitchen appliance, so as to ensure that the fumes are effectively removed while avoiding the problem of reducing the air quality in the kitchen space.

[0007] In a first aspect, the present invention provides an exhaust control method for a range hood, the range hood comprising a fan device and an exhaust device, the exhaust device comprising an external exhaust module and an internal exhaust module, the fan device being used to inhale the oil smoke generated during cooking, and transport the oil smoke to the exhaust device after processing, the exhaust device having an external exhaust mode for exhausting the oil smoke outdoors using the external exhaust module, and an internal exhaust mode for exhausting the oil smoke indoors using the internal exhaust module, the exhaust control method comprising:

[0008] When the range hood is started and running, the weight of the current oil smoke droplets on the filter net in the fan device is detected, and the current air quality at the air outlet of the inner exhaust module is detected;

[0009] Determine whether to switch the current initial exhaust mode according to the current weight of oil smoke droplets or the current air quality, the initial exhaust mode is the exhaust mode determined when the range hood is started, and the initial exhaust mode is one of the external exhaust mode and the internal exhaust mode;

[0010] When it is determined that there is no need to switch the initial exhaust mode, exhaust continues in the initial exhaust mode;

[0011] When it is determined that the initial exhaust mode needs to be switched, the exhaust mode is switched to another exhaust mode other than the initial exhaust mode for exhaust.

[0012] In an optional embodiment, the method further comprises the step of determining an initial exhaust mode, the step comprising one of the following:

[0013] After the range hood is started, the working gear of the range hood is obtained, and the initial exhaust mode is determined according to the working gear;

[0014] Obtaining user operation information, and determining an initial exhaust mode based on the operation information;

[0015] After the range hood is started, the heating temperature of the heating device in the range hood is obtained, and the initial exhaust mode is determined according to the heating temperature.

[0016] In an optional embodiment, when the initial exhaust mode is the internal exhaust mode, the step of determining whether to switch the current initial exhaust mode according to the current air quality includes:

[0017] Compare the current air quality with the initial air quality to obtain a quality comparison result, where the initial air quality is the air quality at the air outlet of the inner exhaust module detected when the range hood is started;

[0018] Based on the mass comparison result, it is determined whether to switch the current initial exhaust mode.

[0019] In an optional embodiment, the current air quality includes the current oil fume concentration and the current air odor intensity, and the initial air quality includes the initial oil fume concentration and the initial air odor intensity;

[0020] The step of judging whether to switch the current initial exhaust mode based on the mass comparison result includes:

[0021] Based on the comparison result between the current oil fume concentration and the initial oil fume concentration, and the comparison result between the current air odor intensity and the initial air odor intensity, it is determined whether to switch the current initial exhaust mode.

[0022] In an optional embodiment, the step of judging whether to switch the current initial exhaust mode based on the comparison result between the current oil fume concentration and the initial oil fume concentration, and the comparison result between the current air odor intensity and the initial air odor intensity, comprises:

[0023] If the difference between the current oil fume concentration and the initial oil fume concentration exceeds a first preset value, and / or the difference between the current air odor intensity and the initial air odor intensity exceeds a second preset value, it is determined that the current initial exhaust mode needs to be switched.

[0024] In an optional embodiment, the inner row module includes a first inner row submodule and a second inner row submodule, and the second inner row submodule is provided with a deodorizing component;

[0025] The method also includes:

[0026] During the operation of the range hood, the current air temperature at the air outlet of the inner exhaust module is detected;

[0027] When the initial exhaust mode is the internal exhaust mode, the step of continuing to exhaust in the initial exhaust mode includes:

[0028] Compare the current air temperature with the initial air temperature to obtain a temperature comparison result, where the initial air temperature is the air temperature at the air outlet of the inner exhaust module detected when the range hood is started;

[0029] Determine the internal discharge mode to be executed according to the temperature comparison result;

[0030] If it is determined that the inner exhaust mode to be executed is the first inner exhaust mode, exhaust is performed using the first inner exhaust submodule;

[0031] If it is determined that the inner exhaust mode to be executed is the second inner exhaust mode, the second inner exhaust submodule is used for exhaust.

[0032] In an optional implementation, the step of determining the inner row mode to be executed according to the temperature comparison result includes:

[0033] When the temperature comparison result indicates that the current air temperature is less than or equal to the initial air temperature, it is determined that the inner exhaust mode to be executed is the first inner exhaust mode;

[0034] When the temperature comparison result indicates that the current air temperature is greater than the initial air temperature, it is determined that the inner exhaust mode to be executed is the second inner exhaust mode.

[0035] In an optional embodiment, when the initial exhaust mode is the internal exhaust mode, the step of determining whether to switch the current initial exhaust mode according to the current weight of the oil fume droplets includes:

[0036] Comparing the current weight of the oil fume droplets with the initial weight of the oil fume droplets, the initial weight of the oil fume droplets being the weight of the oil fume droplets on the filter net detected when the range hood is started;

[0037] If the difference between the current weight of the oil fume droplets and the initial weight of the oil fume droplets is greater than a preset value, it is determined that the initial exhaust mode needs to be switched.

[0038] In a second aspect, the present invention provides an exhaust control device for a range hood, the range hood comprising a fan device and an exhaust device, the exhaust device comprising an external exhaust module and an internal exhaust module, the fan device being used to inhale the oil smoke generated during cooking, and transport the oil smoke to the exhaust device after processing, the exhaust device having an external exhaust mode for exhausting the oil smoke outdoors using the external exhaust module, and an internal exhaust mode for exhausting the oil smoke indoors using the internal exhaust module, the exhaust control device comprising:

[0039] The detection module is used to detect the weight of the oil smoke droplets on the filter net in the fan device and the current air quality at the air outlet of the inner exhaust module during the startup and operation of the range hood;

[0040] A judgment module, used for judging whether to switch the current initial exhaust mode according to the current weight of oil fume droplets or the current air quality, the initial exhaust mode is the exhaust mode determined when the range hood is started, and the initial exhaust mode is one of the external exhaust mode and the internal exhaust mode;

[0041] A first control module, configured to continue exhausting in the initial exhaust mode when it is determined that there is no need to switch the initial exhaust mode;

[0042] The second control module is used to switch to another exhaust mode other than the initial exhaust mode for exhaust when it is determined that the initial exhaust mode needs to be switched.

[0043] In a third aspect, the present invention provides a kitchen appliance, comprising:

[0044] one or more processors;

[0045] A storage device for storing one or more programs;

[0046] When one or more programs are executed by one or more processors, the one or more processors implement any method in the foregoing embodiments.

[0047] The beneficial effects of the embodiments of the present invention include, for example:

[0048] The present invention provides an exhaust control method, device and kitchen appliance for a range hood. During the startup and operation of the range hood, the weight of the current oil fume droplets on the filter net in the fan device is detected, and the current air quality at the air outlet of the inner exhaust module is detected. According to the current weight of the oil fume droplets or the current air quality, it is determined whether to switch the current initial exhaust mode. The initial exhaust module is the exhaust mode determined when the range hood is started, which is one of the inner exhaust mode and the outer exhaust mode. When it is determined that there is no need to switch, the exhaust continues to be performed in the initial exhaust mode. If it is determined that switching is required, the exhaust is switched to another exhaust mode other than the initial exhaust mode. In this solution, the exhaust mode of the range hood is determined based on the weight of the oil fume droplets condensed on the filter net or the air quality at the air outlet of the inner exhaust module, which can ensure the effective removal of oil fumes while avoiding the problem of reducing the air quality in the kitchen space. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0050] Figure 1 A schematic diagram of the structure of a range hood provided by an embodiment of the present invention;

[0051] Figure 2 A schematic diagram of the structure of an exhaust device in a range hood provided by an embodiment of the present invention;

[0052] Figure 3 A flow chart of an exhaust control method for a range hood provided by an embodiment of the present invention;

[0053] Figure 4 A functional module block diagram of an exhaust control device for a range hood provided by an embodiment of the present invention;

[0054] Figure 5 This is a structural block diagram of a kitchen appliance provided by an embodiment of the present invention.

[0055] Icons: 1-range hood; 11-fan device; 111-air inlet; 12-exhaust device; 121-external exhaust module; 122-inner exhaust module; 1221-air outlet; 1222-first inner row submodule; 1223-second inner row submodule; 12231-deodorization component; 123-first valve; 124-second valve; 13-heating device; 14-table; 151-processor; 152-storage device; 153-input device; 154-output device; 2-exhaust control device of range hood; 21-detection module; 22-judgment module; 23-first control module; 24-second control module. DETAILED DESCRIPTION

[0056] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0057] It should be mentioned before discussing exemplary embodiments in more detail that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe various operations (or steps) as sequential processes, many operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of various operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to methods, functions, procedures, subroutines, subprograms, etc. In addition, the embodiments in the present invention and the features in the embodiments can be combined with each other without conflict.

[0058] 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.”

[0059] 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 interdependence.

[0060] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0061] See also Figure 1 and Figure 2, is a schematic diagram of the structure of a range hood 1 provided in an embodiment of the present invention, the range hood 1 comprises a fan device 11 and an exhaust device 12, wherein the exhaust device 12 comprises an inner exhaust module 122 and an outer exhaust module 121. In addition, the range hood 1 also comprises a heating device 13 and a table 14, the heating device 13 is embedded in the table 14, a part of which is located above the table 14 and the other part is located below the table 14. The heat source is provided by the part located below the table 14 and transmitted to the part located above the table 14, and the part located above the table 14 is used to heat the pots and the like.

[0062] The fan device 11 and the exhaust device 12 are located below the countertop 14, and the air intake port 111 of the fan device 11 is located on the countertop 14. When the cookware and the like are heated to generate oil smoke (including water vapor), the fan device 11 is turned on and the oil smoke will be sucked into the interior of the fan device 11 from the air intake port 111 under the action of the negative pressure generated by the fan device 11.

[0063] The fan device 11 is used to inhale the oil smoke generated during cooking, and after processing the oil smoke, it is transported to the exhaust device 12. The fan device 11 includes a filter (not shown in the figure), and the fan device 11 processes the oil smoke, such as filtering the oil smoke with the filter. Specifically, after the oil smoke enters the fan device 11 from the air inlet 111, the oil smoke will collide with the filter, and large particles of oil smoke droplets will be condensed on the filter, and the rest of the oil smoke will enter the interior of the fan device 11.

[0064] After passing through the fan device 11, the oil smoke enters the exhaust device 12, and the exhaust device 12 is used to exhaust the oil smoke indoors or outdoors.

[0065] The exhaust device 12 includes an inner exhaust module 122 and an outer exhaust module 121. The exhaust device 12 has two exhaust modes, including an outer exhaust mode and an inner exhaust mode. The outer exhaust mode is a mode in which the outer exhaust module 121 is used to exhaust the oil smoke to the outside, and the inner exhaust mode is a mode in which the inner exhaust module 122 is used to exhaust the oil smoke to the room.

[0066] When the inner exhaust module 122 is turned on, the inner exhaust module 122 can be used to exhaust the oil smoke into the room through the air outlet 1221, thereby realizing the internal circulation of air. When the outer exhaust module 121 is turned on, the outer exhaust module 121 can be used to exhaust the oil smoke into the outside.

[0067] In addition, the range hood 1 also includes a controller (not shown in the figure), which can be connected to the fan device 11, the exhaust device 12, the heating device 13, etc., and the fan device 11, the exhaust device 12, the heating device 13, etc. can be controlled by the controller.

[0068] Figure 3This is a flow chart of an exhaust control method for a range hood provided in an embodiment of the present invention. The exhaust control method for a range hood can achieve the purpose of effectively absorbing oil smoke while ensuring fresh air in the kitchen space by controlling the exhaust device 12 of the range hood 1. The method can be executed by the exhaust control device of the range hood, which can be implemented in the form of hardware and / or software, and can be configured in an electronic device such as the range hood 1, a computer, a server, a tablet computer or a smart phone.

[0069] Specifically, see Figure 3 The exhaust control method of the range hood provided in this embodiment includes the following steps:

[0070] S11, during the process of starting and running the range hood, detecting the weight of the current oil smoke droplets on the filter net in the fan device, and detecting the current air quality at the air outlet of the inner exhaust module.

[0071] S12, determine whether to switch the current initial exhaust mode according to the current weight of the oil fume droplets or the current air quality. The initial exhaust mode is the exhaust mode determined when the range hood is started. The initial exhaust mode is one of the external exhaust mode and the internal exhaust mode. When it is determined that there is no need to switch the initial exhaust mode, execute the following S13. When it is determined that the initial exhaust mode needs to be switched, execute the following S14.

[0072] S13, continue to exhaust in the initial exhaust mode.

[0073] S14, switching to another exhaust mode other than the initial exhaust mode for exhaust.

[0074] When cooking is required, the range hood 1 can be turned on to absorb the fumes generated during cooking. The range hood 1 can be turned on by controlling the range hood 1 to turn on through a start button on the range hood 1, or by sending a start instruction to the range hood 1 through an intelligent terminal communicating with the range hood 1, and the implementation form is not specifically limited.

[0075] After the range hood 1 is started, the fan device 11 and the exhaust device 12 begin to work. At this time, the exhaust device 12 can work in the initial exhaust mode. The initial exhaust mode can be determined based on the user's selection. For example, the user can select the internal exhaust mode or the external exhaust mode based on demand, or it can also be determined based on the working conditions of the range hood 1.

[0076] When the range hood 1 is started and running, the fan device 11 continuously absorbs the oil fume generated during the cooking process, and the absorbed oil fume will collide with the filter in the fan device 11, so that part of the oil fume droplets will adhere to the filter, while the other part of the oil fume will pass through the filter and be output from the fan device 11 before entering the exhaust device 12.

[0077] The oil smoke may be discharged indoors or outdoors after being processed by the exhaust device 12. For example, if the initial exhaust mode is the external exhaust mode, the oil smoke will pass through the external exhaust module 121 in the exhaust device 12 and be discharged outdoors through the external exhaust module 121. If the initial exhaust mode is the internal exhaust mode, the oil smoke will pass through the internal exhaust module 122 in the exhaust device 12 and be discharged indoors through the internal exhaust module 122.

[0078] In order to ensure the air quality in the kitchen space, in this embodiment, the current air quality at the air outlet 1221 of the inner row module 122 can be detected. An air quality sensor can be provided at the air outlet 1221 of the inner row module 122 to detect the air quality. In this embodiment, the air quality of the air within a set radius with the air quality sensor as the center point can be detected.

[0079] It can be understood that if the inner row module 122 is used to achieve exhaust, the air flow in the kitchen space can be promoted, the air circulation can be achieved, and the fluidity of the air in the kitchen space can be ensured. However, if the amount of oil smoke is large, the inner row module 122 is used to achieve exhaust. Since the oil smoke cannot be completely absorbed by the filter net in the fan device 11 and other filter components in the exhaust device 12, a part of the oil smoke may inevitably remain in the air discharged from the air outlet 1221 of the inner row module 122, which may affect the air quality in the kitchen space. Alternatively, the adsorption capacity may be reduced due to the excessive amount of filter components attached to the inner row module 122, which may lead to a large amount of oil smoke in the air discharged from the air outlet 1221 of the inner row module 122.

[0080] If exhaust is achieved through the external exhaust module 121, the problem of residual oil smoke affecting the air quality in the kitchen space can be solved. However, in practical applications, it is hoped that a better balance can be achieved between ensuring the air flow in the kitchen space and avoiding affecting the air quality in the kitchen space.

[0081] In this embodiment, the weight of the oil fume droplets on the filter net in the fan device 11 detected can reflect the amount of oil fume generated during cooking to a certain extent, and the current air quality at the air outlet 1221 of the inner exhaust module 122 detected can reflect the impact of the oil fume generated during cooking on the air quality in the kitchen space to a certain extent. Both of them can provide a basis for selecting the inner exhaust mode or the outer exhaust mode.

[0082] Based on this, in this embodiment, it can be determined whether to switch the current initial exhaust mode according to the detected current weight of oil smoke droplets or the detected current air quality.

[0083] For example, if the initial exhaust mode is the external exhaust mode, and the weight of the detected oil fume droplets is large, it indicates that the amount of oil fume generated during cooking is large, so the initial exhaust mode (i.e., external exhaust mode) can be maintained. If the weight of the detected oil fume droplets is small, it indicates that the amount of oil fume generated during cooking is small, so the initial exhaust mode can be switched to another exhaust mode other than the initial exhaust mode, i.e., the internal exhaust mode for exhaust.

[0084] For another example, if the initial exhaust mode is the internal exhaust mode, and the current air quality at the air outlet 1221 of the internal exhaust module 122 is detected to be good, it indicates that the amount of oil smoke generated during cooking is small, and the initial exhaust mode (i.e., the internal exhaust mode) can be maintained. If the current air quality at the air outlet 1221 of the internal exhaust module 122 is detected to be poor, it indicates that the amount of oil smoke generated during cooking is large, and therefore the initial exhaust mode can be switched to another exhaust mode other than the initial exhaust mode, i.e., the external exhaust mode for exhaust.

[0085] Please refer to Figure 2 In this embodiment, a first valve 123 is provided between the inner exhaust module 122 and the outer exhaust module 121. The controller can be connected to the driving component of the first valve 123, and the first valve 123 is controlled by controlling the driving component. When the first valve 123 rotates to position A, the outer exhaust module 121 is closed, the inner exhaust module 122 is turned on, and the exhaust device 12 works in the inner exhaust mode. When the first valve 123 rotates to position B, the inner exhaust module 122 is closed, the outer exhaust module 121 is turned on, and the exhaust device 12 works in the outer exhaust mode.

[0086] In this embodiment, the exhaust mode of the range hood 1 is determined based on the weight of the oil fume droplets condensed on the filter net in the fan device 11 or the air quality at the air outlet 1221 of the inner exhaust module 122, which can ensure the effective removal of oil fume while avoiding the problem of reducing the air quality in the kitchen space.

[0087] In this embodiment, when the range hood 1 is started, the initial exhaust mode of the exhaust device 12 needs to be determined. There are many ways to determine the initial exhaust mode. In one possible implementation, the initial exhaust mode can be determined in the following way:

[0088] After the range hood 1 is started, the working gear of the range hood 1 is obtained; and the initial exhaust mode is determined according to the working gear.

[0089] Considering that the working gear of the range hood 1 often corresponds to the amount of oil smoke generated during cooking, for example, if the amount of oil smoke generated by cooking is high, such as when frying or stir-frying, the range hood 1 often works in a high-level mode. That is, when the range hood 1 works in a high-level mode, it means that the amount of oil smoke may be high. In order to avoid affecting the air quality in the kitchen space, the initial exhaust mode can be determined to be the external exhaust mode.

[0090] On the contrary, if the amount of oil smoke generated by cooking is low, such as when steaming or boiling, the range hood 1 often works in a low gear mode. That is, when the range hood 1 works in a low gear, it means that the amount of oil smoke may be low. In order to increase the fluidity of the air in the kitchen space, the initial exhaust mode can be determined to be the internal exhaust mode.

[0091] In another possible implementation, user operation information may be obtained, and the initial exhaust mode may be determined based on the operation information.

[0092] There is an exhaust mode selection button on the range hood 1 or on the smart terminal communicating with the range hood 1. The user can select the initial exhaust mode by selecting the button based on the needs. For example, if the user is going to fry or stir-fry, the user can select the external exhaust mode as the initial exhaust mode. If the user is going to steam or boil, the user can select the internal exhaust mode as the initial exhaust mode. The controller will control one of the internal exhaust module 122 and the external exhaust module 121 to work according to the user's selection.

[0093] In yet another possible implementation, after the range hood 1 is started, the heating temperature of the heating device 13 in the range hood 1 may be obtained, and the initial exhaust mode may be determined according to the heating temperature.

[0094] Considering that the heating temperature required for frying and stir-frying may be higher, while the heating temperature required for steaming and boiling may be lower. Therefore, when the heating temperature of the heating device 13 is higher, the initial exhaust mode may be determined to be the external exhaust mode, and when the heating temperature of the heating device 13 is lower, the initial exhaust mode may be determined to be the internal exhaust mode.

[0095] In actual scenarios, the initial exhaust mode is often set to the internal exhaust mode to ensure the flow of air in the kitchen space, and then during the cooking process, it is determined whether to switch to the external exhaust mode based on the detected information.

[0096] Based on this, in this embodiment, when judging whether to switch the current initial exhaust mode based on the current weight of the oil smoke droplets on the filter net in the fan device 11, it can be achieved in the following way:

[0097] Compare the current weight of the oil fume droplets with the initial weight of the oil fume droplets, the initial weight of the oil fume droplets is the weight of the oil fume droplets on the filter detected when the range hood 1 is started; if the difference between the current weight of the oil fume droplets and the initial weight of the oil fume droplets is greater than the preset value, it is determined that the initial exhaust mode needs to be switched.

[0098] In this embodiment, each time the range hood 1 is started, the weight of the oil fume droplets on the filter can be detected as the initial weight of the oil fume droplets. The detection can be performed by a weight sensor arranged at the bottom of the filter. The detected weight is the total weight of the filter and the oil fume droplets thereon. The weight of the oil fume droplets on the filter can be obtained by subtracting the weight of the filter itself from the total weight.

[0099] During the operation of the range hood 1, the weight of the current oil fume droplets on the filter can be detected at preset intervals. The difference obtained by subtracting the initial weight of the oil fume droplets from the current weight of the oil fume droplets is the weight of the newly condensed oil fume droplets during the cooking process.

[0100] If the difference is too large, for example, greater than the preset value, it indicates that the amount of oil smoke generated during the cooking process is large. Therefore, the current internal exhaust mode can be switched to the external exhaust mode to avoid the problem of large oil smoke further causing adverse effects on the air quality in the kitchen space.

[0101] In addition, in order to avoid excessive condensation of oil smoke droplets on the filter, it is also possible to detect whether the current weight of the oil smoke droplets exceeds the set upper limit value. If it exceeds the set upper limit value, a prompt message can be issued to prompt the user to clean or replace the filter.

[0102] In addition, in the implementation method of determining whether to switch the current initial exhaust mode according to the detected air quality, when the initial exhaust mode is the internal exhaust mode, the step of determining whether to switch the current initial exhaust mode according to the air quality can be implemented in the following manner:

[0103] The current air quality and the initial air quality are compared to obtain a quality comparison result, where the initial air quality is the air quality at the air outlet 1221 of the inner exhaust module 122 detected when the range hood 1 is started; based on the quality comparison result, it is determined whether to switch the current initial exhaust mode.

[0104] In this embodiment, the air quality at the air outlet 1221 of the inner exhaust module 122 is detected after the range hood 1 is started. For the sake of distinction, the air quality detected at the start-up is named as the initial air quality. Similarly, the initial air quality can be detected by using an air quality sensor disposed at the air outlet 1221 of the inner exhaust module 122, such as detecting the air quality of the air within a set radius centered on the air quality sensor.

[0105] When the range hood 1 is started and running, the air quality at the air outlet 1221 of the inner row module 122, ie, the current air quality, can be detected at preset time intervals.

[0106] When the range hood 1 is just started, since cooking has not yet started or has just started, no or very little oil smoke is generated at this time, so the initial air quality detected at the time of startup should be good.

[0107] As the cooking process proceeds, the oil smoke generated during the cooking process may affect the air at the air outlet 1221 of the inner exhaust module 122. If the amount of oil smoke is small or the filter assembly in the inner exhaust module 122 completely filters the oil smoke, the current air quality should not be affected or not be affected too much. In this case, the difference between the current air quality and the initial air quality should be very small. At this time, it can be determined that there is no need to switch the current initial exhaust mode, that is, continue to exhaust in the inner exhaust mode.

[0108] If the amount of oil smoke is large or the amount of oil smoke attached to the filter assembly in the internal exhaust module 122 is large, resulting in insufficient adsorption capacity, a large amount of oil smoke may enter the kitchen space, and the current air quality may be greatly reduced. In this case, the difference between the current air quality and the initial air quality should be large. At this time, it can be determined that the current initial exhaust mode needs to be switched, that is, switched to the external exhaust mode for exhaust.

[0109] Considering that in addition to the possible impact of cooking fumes on air quality, the odor produced during cooking will also affect the air quality and user experience. Therefore, in this embodiment, exhaust control is achieved from two perspectives: cooking fume concentration and air odor.

[0110] Based on this, the air quality sensor includes an oil fume concentration sensor and an air odor sensor, wherein the oil fume concentration sensor can be any one of a photoelectric sensor, an electrochemical sensor, a semiconductor sensor, an infrared sensor, an ultrasonic sensor, etc. The air odor sensor can be any one of a metal oxide semiconductor sensor, a conductive polymer sensor, a gas chromatograph, etc.

[0111] In this embodiment, the current air quality obtained includes the current oil fume concentration and the current air odor intensity, and the initial air quality includes the initial oil fume concentration and the initial air odor intensity.

[0112] On this basis, when judging whether to switch the current initial exhaust mode, it can be implemented in the following ways:

[0113] Based on the comparison result between the current oil fume concentration and the initial oil fume concentration, and the comparison result between the current air odor intensity and the initial air odor intensity, it is determined whether to switch the current initial exhaust mode.

[0114] In this embodiment, exhaust control is performed from two perspectives: oil fume concentration and air odor intensity. Specifically, if the difference between the current oil fume concentration and the initial oil fume concentration exceeds a first preset value, and / or the difference between the current air odor intensity and the initial air odor intensity exceeds a second preset value, it is determined that the current initial exhaust mode needs to be switched.

[0115] The first preset value and the second preset value can be set based on the requirements, for example, they can be set to 0 or a non-zero value, and there is no specific limitation. When the first preset value and the second preset value are set to 0, it means that the current oil fume concentration is greater than the initial oil fume concentration, and the current air odor intensity is greater than the initial air odor intensity.

[0116] That is, when any one of the following two conditions is met, it is determined that the initial exhaust mode needs to be switched: the first condition is that the difference between the current oil fume concentration and the initial oil fume concentration exceeds the first preset value; the second condition is that the difference between the current air odor intensity and the initial air odor intensity exceeds the second preset value.

[0117] In implementation, if the difference between the current oil fume concentration and the initial oil fume concentration exceeds the first preset value, record A1 = 1. If the difference between the current air odor intensity and the initial air odor intensity exceeds the second preset value, record A2 = 1. Calculate A = A1 + A2. If the final A is greater than 0, it can be determined that the initial exhaust mode needs to be switched.

[0118] In this embodiment, considering that sometimes the smell in the air exhausted from the inner exhaust module 122 may cause a bad feeling to the users in the kitchen, therefore, in some cases, it is necessary to deodorize the air exhausted from the inner exhaust module 122.

[0119] Based on this, in this embodiment, the inner row module 122 includes a first inner row submodule 1222 and a second inner row submodule 1223, and the second inner row submodule 1223 is provided with a deodorizing component 12231. In other words, no deodorizing related components are provided in the first inner row submodule 1222, and the first inner row submodule 1222 can be understood as a resistance-free channel.

[0120] Considering that the intensity and diffusion of odor are usually related to the air temperature, in this embodiment, during the operation of the range hood 1, the current air temperature at the air outlet 1221 of the inner exhaust module 122 can also be detected.

[0121] In this embodiment, temperature sensors may be provided at the air outlets 1221 of the first inner row submodule 1222 and the second inner row submodule 1223 to detect the air temperatures at the air outlets 1221 of the first inner row submodule 1222 and the second inner row submodule 1223, respectively.

[0122] When it is determined based on the above method that exhaust needs to be performed in the inner exhaust mode, it is necessary to further determine whether exhaust is performed in the first inner row submodule 1222 or in the second inner row submodule 1223 .

[0123] Therefore, when the initial exhaust mode is the internal exhaust mode, when it is determined that there is no need to switch the initial exhaust mode, the step of continuing to exhaust in the initial exhaust mode can be achieved by:

[0124] The temperature comparison result is obtained by comparing the current air temperature with the initial air temperature, where the initial air temperature is the air temperature at the air outlet 1221 of the inner exhaust module 122 detected when the range hood 1 is started; the inner exhaust mode to be executed is determined according to the temperature comparison result; if the inner exhaust mode to be executed is determined to be the first inner exhaust mode, the first inner exhaust submodule 1222 is used for exhaust; if the inner exhaust mode to be executed is determined to be the second inner exhaust mode, the second inner exhaust submodule 1223 is used for exhaust.

[0125] Similarly, in this embodiment, when the range hood 1 is started, the temperature sensor is used to detect the air temperature at the air outlet 1221 of the inner row module 122. It should be understood that when the range hood 1 is started, exhaust is performed using one of the first inner row submodule 1222 or the second inner row submodule 1223, so the detected air temperature at the air outlet 1221 of the inner row module 122 should be the air temperature at the air outlet 1221 of the inner row submodule that is turned on at startup.

[0126] For example, if the first inner row sub-module 1222 is turned on when the range hood 1 is started, the initial air temperature detected is the air temperature at the air outlet 1221 of the first inner row sub-module 1222; if the second inner row sub-module 1223 is turned on when the range hood 1 is started, the initial air temperature detected is the air temperature at the air outlet 1221 of the second inner row sub-module 1223.

[0127] Correspondingly, during the operation of the range hood 1, the current air temperature detected at the air outlet 1221 of the inner discharge module 122 is the air temperature at the air outlet 1221 of the inner discharge submodule that is currently turned on.

[0128] In this embodiment, by comparing the current air temperature detected during the operation of the range hood 1 with the initial air temperature detected when the range hood 1 is started, it is determined based on the change in air temperature whether to exhaust through the first inner row submodule 1222 or the second inner row submodule 1223.

[0129] Specifically, when the temperature comparison result indicates that the current air temperature is less than or equal to the initial air temperature, it is determined that the inner exhaust mode to be executed is the first inner exhaust mode, that is, exhaust is performed using the first inner exhaust submodule 1222 .

[0130] If the temperature comparison result indicates that the current air temperature is greater than the initial air temperature, it is determined that the inner exhaust mode to be executed is the second inner exhaust mode, that is, the second inner exhaust submodule 1223 is used for exhaust.

[0131] In this embodiment, it is considered that when the air temperature is higher, the odor is emitted faster and the air quality in the kitchen space is affected more. Therefore, in this case, exhaust can be performed through the second inner row submodule 1223. The second inner row submodule 1223 is provided with a deodorizing component 12231, which can be used to deodorize the oil smoke, thereby reducing the odor intensity of the air entering the kitchen space.

[0132] If the air temperature is low, the odor may be smaller and the odor may be released more slowly, and the need for deodorization is low. The first inner row submodule 1222 is not provided with deodorization related components, which can be understood as a resistance-free channel, that is, the first inner row submodule 1222 can be used to achieve rapid exhaust. Therefore, in this case, it is determined to exhaust with the first inner row submodule 1222, so as to accelerate the flow rate of air in the kitchen space.

[0133] Please refer to Figure 2 In this embodiment, a second valve 124 is provided between the first inner row submodule 1222 and the second inner row submodule 1223, and the controller can be connected to the driving component of the second valve 124 to control the second valve 124. When the second valve 124 rotates to position C, the second inner row submodule 1223 is closed and the first inner row submodule 1222 is turned on. When the second valve 124 rotates to position D, the first inner row submodule 1222 is closed and the second inner row submodule 1223 is turned on.

[0134] See also Figure 4 The embodiment of the present invention further provides an exhaust control device 2 for a range hood, which can be used to control the exhaust mode of the range hood 1, wherein the device can be implemented by software and / or hardware and is generally integrated in the control system of the range hood 1.

[0135] like Figure 4 As shown in FIG. 1 , the exhaust control device 2 of the range hood includes a detection module 21, a judgment module 22, a first control module 23 and a second control module 24. The functions of each functional module of the exhaust control device 2 of the range hood are described in detail below.

[0136] The detection module 21 is used to detect the weight of the oil smoke droplets on the filter net of the fan device 11 and the current air quality at the air outlet 1221 of the inner exhaust module 122 during the startup and operation of the range hood 1;

[0137] The judging module 22 is used to judge whether to switch the current initial exhaust mode according to the current weight of the oil fume droplets or the current air quality. The initial exhaust mode is the exhaust mode determined when the range hood 1 is started. The initial exhaust mode is one of the external exhaust mode and the internal exhaust mode.

[0138] The first control module 23 is used to continue exhausting in the initial exhaust mode when it is determined that there is no need to switch the initial exhaust mode;

[0139] The second control module 24 is configured to switch to another exhaust mode other than the initial exhaust mode for exhaust when it is determined that the initial exhaust mode needs to be switched.

[0140] The exhaust control device 2 of the range hood provided in this embodiment can detect the current weight of the oil fume droplets on the filter net of the fan device 11 during the startup and operation of the range hood 1 through the detection module 21, and detect the current air quality at the air outlet 1221 of the inner exhaust module 122. The judgment module 22 determines whether to switch the current initial exhaust mode according to the current weight of the oil fume droplets or the current air quality. The initial exhaust mode is the exhaust mode determined when the range hood 1 is started, which uses the outer exhaust module 121 or the inner exhaust module 122 for exhaust. When it is determined that there is no need to switch, the first control module 23 continues to exhaust in the initial exhaust mode. If it is determined that switching is required, the second control module 24 switches to another exhaust mode other than the initial exhaust mode for exhaust.

[0141] In this solution, the exhaust mode of the range hood 1 is determined based on the weight of the oil fume droplets condensed on the filter net or the air quality at the air outlet 1221 of the inner exhaust module 122, which can ensure the effective removal of oil fume and avoid the problem of reducing the air quality in the kitchen space.

[0142] In a possible implementation, the exhaust control device 2 of the range hood further includes a determination module, which can be used to:

[0143] After the range hood 1 is started, the working gear of the range hood 1 is obtained, and the initial exhaust mode is determined according to the working gear;

[0144] Obtaining user operation information, and determining an initial exhaust mode based on the operation information;

[0145] After the range hood 1 is started, the heating temperature of the heating device 13 in the range hood 1 is obtained, and the initial exhaust mode is determined according to the heating temperature.

[0146] In a possible implementation, when the initial exhaust mode is the internal exhaust mode, the judgment module 22 may be used to:

[0147] Compare the current air quality with the initial air quality to obtain a quality comparison result, where the initial air quality is the air quality at the air outlet 1221 of the inner exhaust module 122 detected when the range hood 1 is started;

[0148] Based on the mass comparison result, it is determined whether to switch the current initial exhaust mode.

[0149] In a possible implementation, the current air quality includes the current oil fume concentration and the current air odor intensity, the initial air quality includes the initial oil fume concentration and the initial air odor intensity, and the judgment module 22 can be used to:

[0150] Based on the comparison result between the current oil fume concentration and the initial oil fume concentration, and the comparison result between the current air odor intensity and the initial air odor intensity, it is determined whether to switch the current initial exhaust mode.

[0151] In a possible implementation, the determination module 22 may be specifically used to:

[0152] If the difference between the current oil fume concentration and the initial oil fume concentration exceeds a first preset value, and / or the difference between the current air odor intensity and the initial air odor intensity exceeds a second preset value, it is determined that the current initial exhaust mode needs to be switched.

[0153] In a possible implementation, the inner row module 122 includes a first inner row submodule 1222 and a second inner row submodule 1223, and a deodorizing component 12231 is provided in the second inner row submodule 1223. The detection module 21 can also be used for:

[0154] During the operation of the range hood 1, the current air temperature at the air outlet 1221 of the inner exhaust module 122 is detected;

[0155] When the initial exhaust mode is the internal exhaust mode, the first control module 23 may be used to:

[0156] Compare the current air temperature with the initial air temperature to obtain a temperature comparison result, where the initial air temperature is the air temperature at the air outlet 1221 of the inner exhaust module 122 detected when the range hood 1 is started;

[0157] Determine the internal discharge mode to be executed according to the temperature comparison result;

[0158] If it is determined that the inner exhaust mode to be executed is the first inner exhaust mode, the first inner exhaust submodule 1222 is used to exhaust air;

[0159] If it is determined that the inner exhaust mode to be executed is the second inner exhaust mode, the second inner exhaust submodule 1223 is used to exhaust.

[0160] In a possible implementation, the first control module 23 may be specifically used to:

[0161] When the temperature comparison result indicates that the current air temperature is less than or equal to the initial air temperature, it is determined that the inner exhaust mode to be executed is the first inner exhaust mode;

[0162] When the temperature comparison result indicates that the current air temperature is greater than the initial air temperature, it is determined that the inner exhaust mode to be executed is the second inner exhaust mode.

[0163] In a possible implementation, when the initial exhaust mode is the internal exhaust mode, the judgment module 22 may be used to:

[0164] Compare the current weight of the oil fume droplets with the initial weight of the oil fume droplets, where the initial weight of the oil fume droplets is the weight of the oil fume droplets on the filter net detected when the range hood 1 is started;

[0165] If the difference between the current weight of the oil fume droplets and the initial weight of the oil fume droplets is greater than a preset value, it is determined that the initial exhaust mode needs to be switched.

[0166] The exhaust control device 2 of the range hood described above can execute the exhaust control method of the range hood 1 provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0167] Figure 5 1 is a schematic diagram of the structure of a kitchen device provided by an embodiment of the present invention. The kitchen device may be the range hood 1 or the control system in the range hood 1. Figure 5 As shown, the kitchen device includes one or more processors 151 and a storage device 152; the processor 151 in the device can be one or more, Figure 5 A processor 151 is taken as an example; the storage device 152 is used to store one or more programs; the one or more programs are executed by one or more processors 151, so that one or more processors 151 implement the exhaust control method of the range hood 1 as any one of the embodiments of the present invention.

[0168] The kitchen device may further include: an input device 153 and an output device 154 .

[0169] The processor 151, storage device 152, input device 153 and output device 154 in the kitchen device can be connected via a bus or other means. Figure 5 The example of connecting through bus is taken in the following.

[0170] The storage device 152 in the device is a computer-readable storage medium that can be used to store one or more programs, which can be software programs, computer executable programs and modules, such as program instructions / modules corresponding to the exhaust control method of the range hood 1 provided in the embodiment of the present invention. The processor 151 executes various functional applications and data processing of the terminal device by running the software programs, instructions and modules stored in the storage device 152, that is, implements the exhaust control method of the range hood 1 in the above method embodiment.

[0171] The storage device 152 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required for a function; the data storage area may store data created according to the use of the device, etc. In addition, the storage device 152 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0172] In some examples, the storage device 152 may further include a memory remotely located relative to the processor 151, and these remote memories may be connected to the device via a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0173] The input device 153 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the device. The output device 154 may include a display device such as a display screen.

[0174] Furthermore, when one or more programs included in the above device are executed by one or more processors 151, the program performs the following operations:

[0175] During the startup and operation of the range hood 1, the weight of the current oil smoke droplets on the filter net in the fan device 11 is detected, and the current air quality at the air outlet 1221 of the inner exhaust module 122 is detected;

[0176] Determine whether to switch the current initial exhaust mode according to the current weight of oil fume droplets or the current air quality, the initial exhaust mode is the exhaust mode determined when the range hood 1 is started, and the initial exhaust mode is one of the external exhaust mode and the internal exhaust mode;

[0177] When it is determined that there is no need to switch the initial exhaust mode, exhaust continues in the initial exhaust mode;

[0178] When it is determined that the initial exhaust mode needs to be switched, the exhaust mode is switched to another exhaust mode other than the initial exhaust mode for exhaust.

[0179] The embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by the processor 151, it is used to execute the exhaust control method of the range hood 1. The method includes:

[0180] During the startup and operation of the range hood 1, the weight of the current oil smoke droplets on the filter net in the fan device 11 is detected, and the current air quality at the air outlet 1221 of the inner exhaust module 122 is detected;

[0181] Determine whether to switch the current initial exhaust mode according to the current weight of oil fume droplets or the current air quality, the initial exhaust mode is the exhaust mode determined when the range hood 1 is started, and the initial exhaust mode is one of the external exhaust mode and the internal exhaust mode;

[0182] When it is determined that there is no need to switch the initial exhaust mode, exhaust continues in the initial exhaust mode;

[0183] When it is determined that the initial exhaust mode needs to be switched, the exhaust mode is switched to another exhaust mode other than the initial exhaust mode for exhaust.

[0184] Optionally, when the program is executed by the processor 151, it can also be used to execute the exhaust control method of the range hood 1 provided in any embodiment of the present invention.

[0185] The computer storage medium of the embodiment of the present invention may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the above. The computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, device or device.

[0186] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0187] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the above.

[0188] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0189] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A range hood exhaust control method, characterized in that: The range hood comprises a fan device and an exhaust device, the exhaust device comprises an external exhaust module and an internal exhaust module, the fan device is used to inhale the oil smoke generated during cooking, and transport the oil smoke to the exhaust device after processing, the exhaust device has an external exhaust mode for exhausting the oil smoke outdoors by using the external exhaust module, and an internal exhaust mode for exhausting the oil smoke indoors by using the internal exhaust module, and the exhaust control method comprises: During the startup and operation of the range hood, the weight of the current oil smoke droplets on the filter net in the fan device is detected, and the current air quality at the air outlet of the inner exhaust module is detected; Determining whether to switch the current initial exhaust mode according to the current weight of the oil fume droplets or the current air quality, the initial exhaust mode being the exhaust mode determined when the range hood is started, and the initial exhaust mode being one of the external exhaust mode or the internal exhaust mode; When it is determined that there is no need to switch the initial exhaust mode, exhausting continues in the initial exhaust mode; When it is determined that the initial exhaust mode needs to be switched, the exhaust mode is switched to another exhaust mode other than the initial exhaust mode for exhaust.

2. The exhaust control method of a range hood according to claim 1, characterized in that: The method further comprises the step of determining the initial exhaust mode, the step comprising one of the following: After the range hood is started, obtaining the working gear of the range hood, and determining the initial exhaust mode according to the working gear; obtaining operation information of a user, and determining the initial exhaust mode based on the operation information; After the range hood is started, the heating temperature of the heating device in the range hood is obtained, and the initial exhaust mode is determined according to the heating temperature.

3. The exhaust control method of a range hood according to claim 1, characterized in that: When the initial exhaust mode is the internal exhaust mode, the step of determining whether to switch the current initial exhaust mode according to the current air quality comprises: Comparing the current air quality with the initial air quality to obtain a quality comparison result, wherein the initial air quality is the air quality at the air outlet of the inner exhaust module detected when the range hood is started; Based on the mass comparison result, it is determined whether to switch the current initial exhaust mode.

4. The exhaust control method of a range hood according to claim 3, characterized in that: The current air quality includes the current oil fume concentration and the current air odor intensity, and the initial air quality includes the initial oil fume concentration and the initial air odor intensity; The step of judging whether to switch the current initial exhaust mode based on the mass comparison result includes: Based on the comparison result between the current oil fume concentration and the initial oil fume concentration, and the comparison result between the current air odor intensity and the initial air odor intensity, it is determined whether to switch the current initial exhaust mode.

5. The exhaust control method of a range hood according to claim 4, characterized in that: The step of judging whether to switch the current initial exhaust mode based on the comparison result of the current oil fume concentration with the initial oil fume concentration and the comparison result of the current air odor intensity with the initial air odor intensity comprises: If the difference between the current oil fume concentration and the initial oil fume concentration exceeds a first preset value, and / or the difference between the current air odor intensity and the initial air odor intensity exceeds a second preset value, it is determined that the current initial exhaust mode needs to be switched.

6. The exhaust control method of a range hood according to claim 1, characterized in that: The inner row module comprises a first inner row submodule and a second inner row submodule, wherein the second inner row submodule is provided with a deodorizing component; The method further comprises: During the operation of the range hood, detecting the current air temperature at the air outlet of the inner row module; When the initial exhaust mode is the internal exhaust mode, the step of continuing to exhaust in the initial exhaust mode includes: Comparing the current air temperature with the initial air temperature to obtain a temperature comparison result, wherein the initial air temperature is the air temperature at the air outlet of the inner exhaust module detected when the range hood is started; Determine the internal discharge mode to be executed according to the temperature comparison result; If it is determined that the inner exhaust mode to be executed is the first inner exhaust mode, exhaust is performed using the first inner exhaust submodule; If it is determined that the inner exhaust mode to be executed is the second inner exhaust mode, the second inner exhaust submodule is used for exhaust.

7. The exhaust control method of a range hood according to claim 6, characterized in that: The step of determining the inner exhaust mode to be executed according to the temperature comparison result comprises: When the temperature comparison result indicates that the current air temperature is less than or equal to the initial air temperature, determining that the inner exhaust mode to be executed is the first inner exhaust mode; When the temperature comparison result indicates that the current air temperature is greater than the initial air temperature, it is determined that the inner exhaust mode to be executed is the second inner exhaust mode.

8. The exhaust control method of a range hood according to claim 1, characterized in that: In the case where the initial exhaust mode is the internal exhaust mode, the step of determining whether to switch the current initial exhaust mode according to the current weight of the oil fume droplets comprises: Comparing the current weight of the oil fume droplets with the initial weight of the oil fume droplets, the initial weight of the oil fume droplets being the weight of the oil fume droplets on the filter net detected when the range hood is started; If the difference between the current weight of the oil fume droplets and the initial weight of the oil fume droplets is greater than a preset value, it is determined that the initial exhaust mode needs to be switched.

9. An exhaust control device for a range hood, characterized in that: The range hood comprises a fan device and an exhaust device, wherein the exhaust device comprises an external exhaust module and an internal exhaust module, wherein the fan device is used to inhale the oil smoke generated during cooking and transport the oil smoke to the exhaust device after processing, wherein the exhaust device has an external exhaust mode for exhausting the oil smoke outdoors by using the external exhaust module, and an internal exhaust mode for exhausting the oil smoke indoors by using the internal exhaust module, wherein the exhaust control device comprises: A detection module, used to detect the weight of the current oil smoke droplets on the filter net in the fan device and the current air quality at the air outlet of the inner exhaust module during the startup and operation of the range hood; a judgment module, used for judging whether to switch the current initial exhaust mode according to the current weight of the oil fume droplets or the current air quality, wherein the initial exhaust mode is the exhaust mode determined when the range hood is started, and the initial exhaust mode is one of the external exhaust mode and the internal exhaust mode; A first control module, configured to continue exhausting in the initial exhaust mode when it is determined that there is no need to switch the initial exhaust mode; The second control module is used for switching to another exhaust mode other than the initial exhaust mode for exhaust when it is determined that the initial exhaust mode needs to be switched.

10. A kitchen appliance, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 8.

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