Fan control method of range hood and range hood

Abstract

The invention relates to the technical field of intelligent range hoods, and discloses a draught fan control method of a range hood and the range hood, the range hood is provided with a temperature collecting device used for detecting the temperature of a pot body, and the method comprises the steps that the temperature of the central area of the pot body and the temperature of the side wall area of the pot body are obtained; and controlling a fan of the range hood based on the temperature of the central area of the pot body and the temperature of the side wall area of the pot body. Therefore, under different cooking scenes, the range hood can be reasonably controlled on the basis of the pot body center area temperature and the pot body side wall area temperature which are obtained in real time according to pots made of different materials and under different temperature rising conditions, the limitation caused by control over the range hood only according to the cooking bench temperature is effectively avoided, and the cooking efficiency is improved. Therefore, different requirements of different users or the same user on the range hood when using different cookware are met, the range hood is effectively controlled to operate at the gear matched with the state of the cookware, so that the range hood operates in a low-consumption and high-efficiency state, the smoke extraction effect of the range hood is effectively improved, and the user experience is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent range hoods, and in particular to a fan control method of a range hood and a range hood. Background Art

[0002] As people's pursuit of quality life continues to improve, users have put forward higher requirements for traditional range hoods in their home kitchens. Traditional range hoods that only have simple manual on / off and manual speed adjustment functions and control methods can no longer meet user needs. In response to this, some range hoods have been designed with voice control or gesture control, but users still need to actively operate to control the range hood. The degree of intelligence is low. In addition, some range hoods are designed with smoke and stove linkage, but the range hood and stove linkage design are required, and they are sold in a bundle. If the stove is damaged and cannot be repaired, it is necessary to replace the matching new range hood at the same time, which has poor flexibility and high cost of use.

[0003] In the related art, a temperature sensor is installed on the range hood to sense the temperature of the stovetop, and the temperature sensor determines whether the range hood needs to be turned on and whether the range hood gear needs to be adjusted by sensing whether the temperature of the stovetop reaches a fixed value. This can easily lead to misjudgment due to different heating conditions for different pots and different temperatures required for different cooking scenes, and thus the start and stop and gear switching operations of the range hood do not meet user needs. Summary of the invention

[0004] In view of this, the present invention provides a fan control method of a range hood and a range hood to solve the problems in the related art that the range hood cannot effectively and automatically adapt to different pots and cooking scenes and is inconvenient to use and has high cost.

[0005] In a first aspect, the present invention provides a fan control method for a range hood, wherein the range hood is provided with a temperature acquisition device for detecting the temperature of a pot body, and the method comprises:

[0006] Obtain the temperature of the center area of ​​the pot and the temperature of the side wall area of ​​the pot;

[0007] The fan of the range hood is controlled based on the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0008] The fan control method of the range hood of the present invention obtains the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body by setting a temperature acquisition device capable of detecting the temperature of the pot body on the range hood, and controls the fan of the range hood based on the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body. Therefore, in different cooking scenarios, the range hood can be reasonably controlled for pots of different materials and heating conditions based on the real-time obtained temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body, effectively avoiding the limitations brought by controlling the range hood only according to the temperature of the stove, thereby meeting the different needs of different users or the same user for the range hood when using different pots, effectively controlling the range hood to operate at a gear matching the state of the pot, so that the range hood operates in a low-power and high-efficiency state, effectively improving the smoke extraction effect of the range hood, and significantly improving the user experience.

[0009] In an optional implementation, based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body, the fan of the range hood is controlled, including:

[0010] Based on detecting that the temperature of the central area of ​​the pot body or the temperature of the side wall area of ​​the pot body reaches the first set temperature within the first set time, the fan of the range hood is started.

[0011] The fan control method of the range hood of the present invention determines that the stove is started based on detecting that the temperature of the central area of ​​the pot body or the temperature of the side wall area of ​​the pot body reaches the first set temperature within a first set time, thereby automatically starting the fan of the range hood. The automatic start of the range hood is achieved without the need to use an integrated range hood or stove and without manual operation, effectively avoiding the increase in the cost of the range hood or stove, effectively improving the intelligence of the range hood, and significantly improving the user experience.

[0012] In an optional implementation, based on the temperature of the pot center area and the temperature of the pot side wall area, the fan of the range hood is controlled, including:

[0013] If it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body both reach the second set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body conform to the preset cooking change law, the fan gear of the range hood is adjusted to the highest gear among the multiple configured gears.

[0014] The fan control method of the range hood of the present invention can determine that the user is performing operations such as cooking at this time when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body reach the second set temperature within the second set time, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body meet the preset cooking change law, and automatically adjust the fan gear of the range hood to the highest gear among multiple configuration gears. Timely and accurate adjustment of the gear of the range hood effectively improves the intelligence level of the range hood and significantly improves the user experience.

[0015] In an optional implementation, the fan of the range hood is controlled based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body, further comprising:

[0016] After the temperature of the central area of ​​the pot body is detected to drop by the first setting range within the third setting time, it is increased by the second setting range within the fourth setting time, and if the temperature change amplitude of the side wall area of ​​the pot body is detected to be smaller than the temperature change amplitude of the central area of ​​the pot body within the third setting time and within the fourth setting range, the fan gear of the range hood is adjusted to the first gear;

[0017] Among them, the first gear is lower than the highest gear.

[0018] The fan control method of the range hood of the present invention detects that the temperature of the central area of ​​the pot body drops by a first set range within a third set time, and then rises by a second set range within a fourth set time, and if it is detected within the third set time and within the fourth set range that the temperature change amplitude of the side wall area of ​​the pot body is less than the temperature change amplitude of the central area of ​​the pot body, the fan gear of the range hood is adjusted to a first gear lower than the highest gear, thereby timely and accurately adjusting the gear of the range hood, effectively improving the intelligence level of the range hood, and significantly improving the user experience.

[0019] In an optional implementation, the fan of the range hood is controlled based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body, further comprising:

[0020] Based on the fact that the difference between the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body is not greater than the first set difference, and the temperature of the central area of ​​the pot body is lower than the temperature before it drops within the third set time, the fan gear of the range hood is adjusted to the lowest gear among multiple configured gears, or the fan gear of the range hood is lowered.

[0021] The fan control method of the range hood of the present invention adjusts the fan gear of the range hood to the lowest gear among multiple configuration gears, or reduces the fan gear of the range hood, when the difference between the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body is not greater than the first set difference and the temperature of the central area of ​​the pot body is lower than the temperature before it drops within the third set time. According to the temperature of the pot body, the range hood gear is timely reduced to ensure that the smoke extraction effect matches the working conditions of the pot body and the stove, thereby effectively improving the intelligence of the range hood and significantly improving the user experience.

[0022] In an optional implementation, the fan of the range hood is controlled based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body, further comprising:

[0023] If it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body do not reach the second set temperature, and it is detected within the fifth set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body do not reach the third set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body meet the preset high-fire steaming change law, then the fan gear of the range hood is adjusted to the first gear among the multiple configuration gears;

[0024] Wherein, the fifth setting time is later than the second setting time;

[0025] The third set temperature is lower than the second set temperature;

[0026] The first gear is lower than the highest gear among the multiple configuration gears of the range hood.

[0027] In an optional implementation, based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body, the fan of the range hood is controlled, including:

[0028] If it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body do not reach the second set temperature, but it is detected within the sixth set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body do not reach the fourth set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body meet the preset low-fire steaming change law, then the fan gear of the range hood is adjusted to the first gear among the multiple configuration gears;

[0029] When the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body both rise, and the first change rate of the temperature of the side wall area of ​​the pot body is greater than the second change rate of the temperature of the central area of ​​the pot body, adjusting the fan gear of the range hood to the lowest gear among the multiple configuration gears;

[0030] Wherein, the sixth setting time is later than the second setting time;

[0031] The fourth set temperature is lower than the second set temperature;

[0032] The first gear is smaller than the highest gear among the multiple configuration gears of the range hood, and the first gear is larger than the lowest gear.

[0033] In an optional implementation, based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body, the fan of the range hood is controlled, including:

[0034] When it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped, and it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped below the fifth set temperature within the seventh set time, the fan of the range hood is turned off.

[0035] The fan control method of the range hood of the present invention automatically turns off the fan of the range hood when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped, and when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped to below the fifth set temperature within the seventh set time. Therefore, the range hood is turned off in time based on the temperature of the pot dropping to a certain temperature, effectively ensuring that the range hood is automatically turned off in time after the range hood completes the range hood extraction operation, avoiding the waste of power consumption of the range hood caused by the slow drop of the stove temperature when the range hood is controlled based on the stove temperature in the related art.

[0036] In a second aspect, the present invention provides a range hood, comprising:

[0037] A temperature collection device is used to collect the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body;

[0038] The controller is connected to the temperature acquisition device, and the controller includes: a memory and a processor. The memory and the processor are communicatively connected to each other. The memory stores computer instructions. The processor executes the fan control method of the range hood according to the first aspect of the claim or any corresponding embodiment thereof by executing the computer instructions.

[0039] In an optional implementation, the temperature acquisition device is an infrared temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 Schematic diagram of an application scenario of a fan control method for a range hood according to the present invention;

[0042] Figure 2 is a flow chart of a fan control method of a range hood according to an embodiment of the present invention;

[0043] Figure 3 is a flow chart of another fan control method of a range hood according to an embodiment of the present invention;

[0044] Figure 4 is a curve 1 of the change of the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body with time according to an embodiment of the present invention;

[0045] Figure 5 is a second curve of the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body changing with time according to an embodiment of the present invention;

[0046] Figure 6 is a flow chart of another range hood fan control method according to an embodiment of the present invention;

[0047] Figure 7 is a third curve of the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body changing with time according to an embodiment of the present invention;

[0048] Figure 8 is a curve 4 showing changes of the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body with time according to an embodiment of the present invention;

[0049] Fig. 9 is a structural block diagram of the XX device according to an embodiment of the present invention;

[0050] Fig.10 is a curve 5 of the change of the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body with time according to an embodiment of the present invention;

[0051] Fig.11 is a hardware structure block diagram of a range hood according to an embodiment of the present invention;

[0052] Fig.12 It is a schematic diagram of the hardware structure of the controller of the range hood according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0054] The present invention provides a fan control method of a range hood and a range hood, so as to solve the problems in the related art that the range hood cannot automatically and effectively adapt to different pots and cooking scenes and is inconvenient to use and has high cost.

[0055] Figure 1 The schematic diagram of the application scenario of the fan control method of the range hood of the present invention is shown as follows: Figure 1 As shown, the distance between the range hood 101 and the stove 102 can be 50-100 cm, and can also be set according to actual needs. The range hood 101 is equipped with a movable device 1011, and the temperature acquisition device 1012 is embedded in the movable device 1011. The temperature acquisition angle 1013 of the temperature acquisition device 1012 can be adjusted according to the parameters of the temperature acquisition device 1012. The video recognition device 1014 is embedded in the range hood 101. Here, the video recognition device 101 is not a device that must be used in the embodiment of the present invention, and a more specific description is not given here.

[0056] The temperature acquisition device 1012 can be used to detect the temperature of the pot body, and the temperature of the pot body may include: the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0057] According to an embodiment of the present invention, an embodiment of a fan control method for a range hood is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0058] In this embodiment, a fan control method for a range hood is provided, which can be used for a range hood, etc. The range hood is provided with a temperature acquisition device for detecting the temperature of a pot body. Figure 2 is a flow chart of a fan control method for a range hood according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0059] Step S201, obtaining the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0060] In an optional embodiment of the present invention, a temperature acquisition device can be provided on the range hood, and the temperature acquisition device can be used to detect the temperature of the pot body, and the temperature acquisition device can be a temperature sensor. In addition, it should be noted that the temperature acquisition device can also acquire the temperature of the stove top, the temperature of the central area of ​​the pot body, and the temperature of the side wall of the pot body. The stove top temperature can be the temperature of the flame part after the stove is turned on, and the temperature of the side wall of the pot body can also be called the temperature around the stove top. In the embodiment of the present invention, the temperature around the stove top is represented by the temperature of the side wall of the pot body. Therefore, the temperature acquisition device can be used to directly acquire the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body. And through communication with the temperature acquisition device, the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body can be directly obtained.

[0061] The temperature of the center area and the temperature of the side wall area of ​​the pot are obtained here mainly to more accurately infer the cooking operations performed by the user using the pot based on the materials and heating conditions of the different pot bodies, the temperatures at the corresponding positions of the pot body and the temperature change curve, so as to more accurately control the range hood based on the temperatures of different areas of the pot body.

[0062] Step S202, controlling the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0063] In an optional embodiment of the present invention, based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body, the fan of the range hood can be controlled to be turned on, adjusted in gear, and turned off.

[0064] For example, if the temperature in the center of the pot and the temperature in the side wall of the pot are both high, it may be due to stir-frying or high-fire steaming. In this case, the range hood needs to be adjusted to a higher gear to better perform the fume extraction operation and improve the fume extraction efficiency. The range hood can also be controlled in combination with the temperature change curve.

[0065] The fan control method of the range hood of the present invention obtains the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body by setting a temperature acquisition device capable of detecting the temperature of the pot body on the range hood, and controls the fan of the range hood based on the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body. Therefore, in different cooking scenarios, the range hood can be reasonably controlled for pots of different materials and heating conditions based on the real-time obtained temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body, effectively avoiding the limitations brought by controlling the range hood only according to the temperature of the stove, thereby meeting the different needs of different users or the same user for the range hood when using different pots, effectively controlling the range hood to operate at a gear matching the state of the pot, so that the range hood operates in a low-power and high-efficiency state, effectively improving the smoke extraction effect of the range hood, and significantly improving the user experience.

[0066] In this embodiment, a fan control method for a range hood is provided, which can be used for a range hood, etc. The range hood is provided with a temperature acquisition device for detecting the temperature of a pot body. Figure 3 is a flow chart of a fan control method for a range hood according to an embodiment of the present invention. Figure 3 As shown, the process includes the following steps:

[0067] Step S301, obtaining the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0068] For details, please see Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0069] Step S302, controlling the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0070] Specifically, step S302 may include:

[0071] Step S3021, based on detecting that the temperature of the central area of ​​the pot body or the temperature of the side wall area of ​​the pot body reaches the first set temperature within the first set time, starting the fan of the range hood.

[0072] In an optional embodiment of the present invention, the first set time may be 3-5 seconds or other time set according to actual needs, and the first set temperature may be 45° or other temperature value set according to actual needs. Specifically, after the range hood is powered on, the control system of the range hood begins to receive real-time temperature data from the temperature acquisition device. When the stove is ignited, within 3 to 5 seconds, the temperature sensor detects that the temperature in the center area of ​​the pot body or the temperature in the side wall area of ​​the pot body rises to 45°, then it is determined that the stove is ignited, the range hood is started, and the fan of the range hood is started.

[0073] It should be noted that, in an optional embodiment, there is a situation where the stove is turned on without placing the pot on it. In this case, the temperature collection device can also collect the temperature of the burner at the flame above the stove. If after the stove is ignited, the temperature sensor detects that the temperature of the center area of ​​the pot body or the temperature of the side wall area of ​​the pot body rises to 45° within 3 to 5 seconds, it is determined that the stove is on, the range hood is started, and the fan of the range hood is started.

[0074] The fan control method of the range hood of the present invention determines that the stove is started based on detecting that the temperature of the central area of ​​the pot body or the temperature of the side wall area of ​​the pot body reaches the first set temperature within a first set time, thereby automatically starting the fan of the range hood. The automatic start of the range hood is achieved without the need to use an integrated range hood or stove and without manual operation, effectively avoiding the increase in the cost of the range hood or stove, effectively improving the intelligence of the range hood, and significantly improving the user experience.

[0075] Step S3022, if it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body both reach the second set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body conform to the preset cooking change law, then the fan gear of the range hood is adjusted to the highest gear among the multiple configured gears.

[0076] In an optional embodiment, the second set time may be 30 seconds or other time set according to actual needs, and the second set temperature may be 75° or other temperature values ​​set according to actual needs. The highest gear may be the stir-fry gear of the range hood. The multiple configuration gears of the range hood may include stir-fry gear, high gear, and low gear. In the embodiment of the present invention, the stir-fry gear is defined as the highest gear, the high gear is defined as the first gear, and the low gear is defined as the lowest gear. In actual applications, the gear of the range hood can be set according to actual needs.

[0077] Specifically, when the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body both rise to 75° or above within 30 seconds, and the temperature rises exponentially. It can be determined that the current pot is in the cooking state. The range hood gear can be adjusted to the stir-fry gear. Whether the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body rise exponentially can be determined by comparing the first change curve of the temperature of the center area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body with the curve corresponding to the preset cooking change law pre-set by the control system of the range hood. If the difference in the waveform curves is within the set difference threshold range, it can be determined that the first change curve of the temperature of the center area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body meet the preset cooking change law. A similar method can be used to determine whether a certain change curve meets the corresponding preset numbering law.

[0078] For example, through experiments, when a stove and a pot are used to cook food over a high flame, add water, and continue cooking, the temperature variation data of the center area of ​​the pot and the temperature of the side wall area of ​​the pot over time are shown in Table 1. Based on Table 1, the following can be generated: Figure 4 The temperature curves of the center area of ​​the pot and the side wall area of ​​the pot over time are shown in FIG. Figure 4 The temperature change curve of the 0-20th second in the curve shown is used as the preset cooking change regularity curve. Among them, the temperature in the center area of ​​the pot body can also be understood as the temperature of the stove head and the center of the pot body, and the temperature in the side wall area of ​​the pot body can be understood as the temperature of the edge and surrounding of the pot body.

[0079] It should be noted that Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig.10 The horizontal axis represents time in seconds, and the vertical axis represents temperature in degrees. This will not be described in detail below.

[0080] Table 1 Data on the change of the temperature in the center area of ​​the pot and the temperature in the side wall area of ​​the pot over time

[0081] Time(S) Temperature of the center of the pot (°) Temperature of the pot side wall area (°) 0 0 0 5 45 50 10 90 89 20 110 125 30 110 128 40 110 128 50 110 128 60 110 128 70 110 128 80 110 128 90 110 128 100 110 128 120 110 128 130 85 110 140 100 128 150 110 128 160 110 128 170 110 128 180 110 128 240 110 128 300 110 128 360 110 128 420 110 128

[0082] It should be noted that the 0° C. mentioned in Table 1 and below can be understood as a reference temperature, which can be the room temperature of 25° C. or other set reference temperatures in the embodiment of the present invention.

[0083] When using the stove and pot to cook over high heat, add water, and steam, the temperature change data of the center area of ​​the pot and the side wall area of ​​the pot over time are shown in Table 2. Based on Table 2, the following can be generated: Figure 5 The preset cooking variation curve is shown.

[0084] Table 2 Data on the change of the temperature in the center area of ​​the pot and the temperature in the side wall area of ​​the pot over time

[0085] Time(S) Temperature of the center of the pot (°) Temperature of the pot side wall area (°) 0 0 0 5 45 43 10 90 89 20 110 128 30 110 128 40 110 128 50 110 128 60 110 128 70 110 128 80 110 128 90 110 128 100 110 128 120 110 128 130 70 95 140 75 100 150 80 105 160 90 110 170 100 120 180 100 120 240 100 120 300 100 120 360 100 120 420 100 120

[0086] From Table 1, Table 2 and Figure 4 and Figure 5 It can be seen that at the 10th second, the temperature of the central area of ​​the pot and the temperature of the side wall area of ​​the pot both rose to 75° and above, and increased exponentially, reaching the peak temperature of the central area of ​​the pot and the peak temperature of the side wall area of ​​the pot respectively at the 20th second.

[0087] The fan control method of the range hood of the present invention can determine that the user is performing operations such as cooking at this time when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body reach the second set temperature within the second set time, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body meet the preset cooking change law, and automatically adjust the fan gear of the range hood to the highest gear among multiple configuration gears. Timely and accurate adjustment of the gear of the range hood effectively improves the intelligence level of the range hood and significantly improves the user experience.

[0088] Step S3023, after detecting that the temperature of the central area of ​​the pot body drops within the first set range within the third set time, it rises within the second set range within the fourth set time, and it is detected within the third set time and within the fourth set range that the temperature change amplitude of the side wall area of ​​the pot body is smaller than the temperature change amplitude of the central area of ​​the pot body, the fan gear of the range hood is adjusted to the first gear, wherein the first gear is lower than the highest gear.

[0089] In an optional implementation manner of the present invention, the third set time, the fourth set time, the second set range, etc. can all be set according to actual needs.

[0090] For example, refer back to Table 1 and Figure 4 , between the 120th and 130th seconds, the temperature curve in the center of the pot body shows a short-term downward trend, and then rises rapidly. The oscillation amplitude of the temperature in the side wall area of ​​the pot body is smaller than the oscillation amplitude of the temperature curve in the center of the pot body. In this case, it can be determined that water is added when cooking, and the range hood can be turned to high gear, which is the first gear mentioned above.

[0091] Refer back to Table 2 and Figure 5 , between 120 seconds and 130 seconds, the temperature curve in the center of the pot body shows a short-term downward trend, which lasts slightly longer than the downward trend in Table 1, and then increases linearly and gradually approaches a temperature value. The oscillation amplitude of the temperature in the side wall area of ​​the pot body is smaller than the oscillation amplitude of the temperature curve in the center of the pot body. In this case, it can be determined that the cooking is done with the cooker lid covered on high heat after adding water, and the range hood can be turned to high gear, which is the first gear mentioned above.

[0092] In the two cases in Table 1 and Table 2, the third set time, the fourth set time, and the second set range are different. In practical applications, the set time and the set range described here and in other places can be set according to actual needs, and the embodiments of the present invention do not take specific time values ​​and temperature ranges as examples.

[0093] The fan control method of the range hood of the present invention detects that the temperature of the central area of ​​the pot body drops by a first set range within a third set time, and then rises by a second set range within a fourth set time, and if it is detected within the third set time and within the fourth set range that the temperature change amplitude of the side wall area of ​​the pot body is less than the temperature change amplitude of the central area of ​​the pot body, the fan gear of the range hood is adjusted to a first gear lower than the highest gear, thereby timely and accurately adjusting the gear of the range hood, effectively improving the intelligence level of the range hood, and significantly improving the user experience.

[0094] Step S3024, based on the fact that the difference between the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body is not greater than the first set difference, and the temperature of the central area of ​​the pot body is lower than the temperature before it drops within the third set time, the fan gear of the range hood is adjusted to the lowest gear among multiple configured gears, or the fan gear of the range hood is lowered.

[0095] For example, if the temperature curve change trend of the center area of ​​the pot body is basically consistent with the temperature curve change trend of the side wall area of ​​the pot body, and after the set time, the difference between the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body is not greater than the first set difference, and the temperature of the side wall area of ​​the pot body gradually shifts to the temperature of the center area of ​​the pot body, it can be determined that the cooking is switched from high heat to low heat, and the fan gear of the range hood can be directly adjusted to the lowest gear among multiple configured gears. Or a first reminder to adjust the motor gear of the range hood to the lowest gear among multiple configured gears or a second reminder to reduce the motor gear of the range hood is issued. And in response to the first confirmation instruction of the first reminder, the fan gear of the range hood is adjusted to the lowest gear among multiple configured gears, or in response to the second confirmation instruction of the second reminder, the fan gear of the range hood is reduced. If the user confirms that there is no need to adjust the fan gear of the range hood to the lowest gear among multiple configured gears, the current gear of the range hood remains unchanged.

[0096] Refer again to Table 2 and Figure 5 , the temperature curve change trend of the center area of ​​the stove pot body is basically consistent with the temperature curve change trend of the side wall area of ​​the pot body. After the 170th second, the difference between the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body is not greater than the first set difference, and the temperature of the side wall area of ​​the pot body gradually shifts to the temperature of the center area of ​​the pot body. It can be determined that the cooking is changed to low-heat steaming, and the fan gear of the range hood can be directly adjusted to the lowest gear among multiple configured gears. Or issue a first reminder to adjust the motor gear of the range hood to the lowest gear among multiple configured gears or a second reminder to reduce the motor gear of the range hood. And in response to the first confirmation instruction of the first reminder, the fan gear of the range hood is adjusted to the lowest gear among multiple configured gears, or in response to the second confirmation instruction of the second reminder, the fan gear of the range hood is reduced. If the user confirms that there is no need to adjust the fan gear of the range hood to the lowest gear among multiple configured gears, the current gear of the range hood remains unchanged.

[0097] The fan control method of the range hood of the present invention adjusts the fan gear of the range hood to the lowest gear among multiple configuration gears, or reduces the fan gear of the range hood, when the difference between the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body is not greater than the first set difference and the temperature of the central area of ​​the pot body is lower than the temperature before it drops within the third set time. According to the temperature of the pot body, the range hood gear is timely reduced to ensure that the smoke extraction effect matches the working conditions of the pot body and the stove, thereby effectively improving the intelligence of the range hood and significantly improving the user experience.

[0098] Step S3025, when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped, and it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped below the fifth set temperature within the seventh set time, the fan of the range hood is turned off.

[0099] In an optional embodiment of the present invention, the seventh setting time may be 60 seconds, and the fifth setting temperature may be 40°. Specifically, when the stove is turned off, the temperatures of the central area of ​​the pot body and the side wall area of ​​the pot body collected by the temperature collection device both show a continuous downward trend, and the temperature range of the side wall area of ​​the pot body decreases faster than the temperature of the central area of ​​the pot body. For example, one minute after the stove is turned off, the temperatures of the central area of ​​the pot body and the side wall area of ​​the pot body both drop below 40°. It can be determined that the stove is turned off, and the fan of the range hood is turned off.

[0100] The fan control method of the range hood of the present invention automatically turns off the fan of the range hood when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped, and when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped to below the fifth set temperature within the seventh set time. Therefore, the range hood is turned off in time based on the temperature of the pot dropping to a certain temperature, effectively ensuring that the range hood is automatically turned off in time after the range hood completes the range hood extraction operation, avoiding the waste of power consumption of the range hood caused by the slow drop of the stove temperature when the range hood is controlled based on the stove temperature in the related art.

[0101] In this embodiment, a fan control method for a range hood is provided, which can be used for a range hood, etc. The range hood is provided with a temperature acquisition device for detecting the temperature of a pot body. Figure 6 is a flow chart of a fan control method for a range hood according to an embodiment of the present invention. Figure 6 As shown, the process includes the following steps:

[0102] Step S601, obtaining the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0103] For details, please see Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0104] Step S602, controlling the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0105] Specifically, step S602 may include:

[0106] Step S6021, based on detecting that the temperature of the central area of ​​the pot body or the temperature of the side wall area of ​​the pot body reaches the first set temperature within the first set time, starting the fan of the range hood.

[0107] For details, please see Figure 3 Step S3021 of the illustrated embodiment will not be described in detail here.

[0108] Step S6022, if it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have not reached the second set temperature, but it is detected within the fifth set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have not reached the third set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body conform to the preset high-fire steaming change law, then the motor fan gear of the range hood is adjusted to the first gear among multiple configuration gears.

[0109] In an optional embodiment of the present invention, the second setting time can be 30 seconds, the second setting temperature can be 75°, the fifth setting time can be 60 seconds to 120 seconds, and the third setting temperature can be set separately for the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body. For example, the third setting temperature for the temperature of the center area of ​​the pot body can be set to 110°, and the third setting temperature for the temperature of the side wall area of ​​the pot body can be set to 128°.

[0110] For example, through experiments, when the stove and pot are used for high-fire steaming, water is added, and high-fire steaming is continued, the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body change with time as shown in Table 3. Based on Table 3, the following can be generated: Figure 7 The temperature of the central area of ​​the pot body can also be understood as the temperature of the stove head and the center of the pot body, and the temperature of the side wall area of ​​the pot body can be understood as the temperature of the edge and surrounding of the pot body.

[0111] Table 3 Data on the change of the temperature in the center area of ​​the pot and the temperature in the side wall area of ​​the pot over time

[0112] Time(S) Temperature of the center of the pot (°) Temperature of the pot side wall area (°) 0 0 0 5 45 50 10 50 55 20 55 60 30 65 70 40 75 80 50 80 95 60 85 100 70 95 125 80 100 125 90 105 125 100 105 125 120 105 125 130 55 80 140 54 95 150 58 105 160 60 125 170 80 125 180 90 125 240 100 125 300 105 125 360 100 125 420 100 125

[0113] When the stove and pot are used for high-fire steaming, adding water, and low-fire steaming, the temperature changes of the center area of ​​the pot body and the side wall area of ​​the pot body over time are shown in Table 4. Based on Table 4, the following can be generated: Figure 8 The preset high-fire steaming change curve is shown.

[0114] Table 4 Data on the change of the temperature in the center area of ​​the pot and the temperature in the side wall area of ​​the pot over time

[0115]

[0116]

[0117] From Table 3, Table 4 and Figure 7 and Figure 8It can be seen that when the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body collected by the temperature collection device do not rise to 75° within 30 seconds, but show a gradual linear upward trend, and gradually reach a temperature point of 110° in 1 to 2 minutes, and it is a gradually approaching trend, it can be determined that the cooking scene that the user is using the stove and pot is determined to be steaming. Adjust the gear of the range hood to high. After determining that the cooking scene that the user is using the stove and pot is steaming, the curve of the temperature in the center area of ​​the pot body shows a short-term downward trend after 120 seconds, and then shows an upward trend again, and the oscillation amplitude of the temperature in the side wall area of ​​the pot body is smaller than that of the temperature in the center area of ​​the pot body. The user's operation based on the pot and stove can be determined as adding water during the steaming process, and the gear of the range hood can be kept at high, that is, the first gear mentioned above.

[0118] The subsequent changes in the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body can continue to refer to Table 3, Table 4 and Figure 7 and Figure 8 As shown, for specific range hood gear adjustment, please refer to step S6023.

[0119] Step S6023, when the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body both rise, and the first change rate of the temperature of the side wall area of ​​the pot body is greater than the second change rate of the temperature of the central area of ​​the pot body, adjust the fan gear of the range hood to the lowest gear among multiple configured gears.

[0120] Among them, the sixth set time is later than the second set time, the fourth set temperature is lower than the second set temperature, the first gear is lower than the highest gear, and the first gear is higher than the lowest gear.

[0121] For example, refer back to Table 3, Table 4 and Figure 7 and Figure 8 , if the temperature drop curve of the center area of ​​the pot body is basically consistent with the temperature drop curve of the side wall area of ​​the pot body, and after a short drop, the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body both rise, and the first change rate of the temperature of the side wall area of ​​the pot body is greater than the second change rate of the temperature of the center area of ​​the pot body, that is, the temperature of the side wall area of ​​the pot body gradually shifts to the center area of ​​the pot body, then it can be determined that the user has switched from high-fire steaming to low-fire steaming based on the operation of the stove and the pot. The fan gear of the range hood can be directly adjusted to the lowest gear among multiple configuration gears. Or a reminder is issued whether the fan gear of the range hood needs to be adjusted to the lowest gear among multiple configuration gears, and based on the confirmation information for the reminder, the fan gear of the range hood is adjusted to the lowest gear among multiple configuration gears. If the user feedback does not need to adjust the fan gear of the range hood to the lowest gear among multiple configuration gears, the current gear of the range hood, that is, the first gear, is maintained.

[0122] Step S6024, when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped, and it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped below the fifth set temperature within the seventh set time, the fan of the range hood is turned off.

[0123] For details, please see Figure 3 Step S3024 of the illustrated embodiment will not be described in detail here.

[0124] In this embodiment, a fan control method for a range hood is provided, which can be used for a range hood, etc. The range hood is provided with a temperature acquisition device for detecting the temperature of a pot body. Fig. 9 is a flow chart of a fan control method for a range hood according to an embodiment of the present invention. Fig. 9 As shown, the process includes the following steps:

[0125] Step S901, obtaining the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0126] For details, please see Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0127] Step S902, controlling the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

[0128] Specifically, step S902 may include:

[0129] Step S9021, based on detecting that the temperature of the central area of ​​the pot body or the temperature of the side wall area of ​​the pot body reaches the first set temperature within the first set time, starting the fan of the range hood.

[0130] For details, please see Figure 3 Step S3021 of the illustrated embodiment will not be described in detail here.

[0131] Step S9022, if it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have not reached the second set temperature, but it is detected within the fifth set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have not reached the third set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body conform to the preset high-fire steaming change law, then the fan gear of the range hood is adjusted to the first gear among multiple configuration gears.

[0132] Among them, the fifth set time is later than the second set time, the third set temperature is lower than the second set temperature, and the first gear is lower than the highest gear.

[0133] For example, through experiments, when the stove and pot are used for low-fire steaming and then high-fire steaming, the temperature change data of the center area of ​​the pot body and the side wall area of ​​the pot body over time are shown in Table 5. Based on Table 5, the following can be generated: Fig.10 The first preset variation regularity curve is shown. The temperature in the center area of ​​the pot body can also be understood as the temperature of the stove head and the center of the pot body, and the temperature in the side wall area of ​​the pot body can be understood as the temperature of the edge and surrounding of the pot body.

[0134] Table 5 Data on the change of the temperature in the center area of ​​the pot and the temperature in the side wall area of ​​the pot over time

[0135] Time(S) Temperature of the center of the pot (°) Temperature of the pot side wall area (°) 0 0 0 5 45 43 10 47 44 20 50 45 30 53 45 40 58 48 50 60 49 60 63 50 70 73 75 80 83 95 90 95 120 100 105 128 120 105 128 130 105 128 140 105 128 150 105 128 160 105 128 170 105 128 180 105 128 240 105 128 300 105 128 360 105 128 420 105 128

[0136] Refer to Table 5 and Fig.10 , the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body collected by the temperature collection device did not rise to 75° within 30 seconds, but showed a trend of gradual linear rise, and gradually reached a temperature point of 105° in 5 to 6 minutes. And the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body showed a trend of gradually approaching each other, and the temperature range was gradually spreading from the temperature of the center area of ​​the pot body to the side wall area of ​​the pot body. This temperature rise curve is smoother than the curves of high-fire cooking and high-fire steaming. It can be determined that the cooking scene based on the stove and pot at this time is low-fire steaming, that is, the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body detected in the second set time did not reach the second set temperature, but the temperature of the center area of ​​the pot body and the temperature of the side wall area of ​​the pot body detected in the fifth set time did not reach the third set temperature, and the gear of the range hood is low at this time.

[0137] Continue to refer to Table 5 and Fig.10 As shown, after determining that the user's cooking scenario based on the stove and pot is low-heat steaming, the temperature curve of the center area of ​​the pot body shows a small increase, the temperature curve of the side wall area of ​​the pot body rises rapidly, and the temperature range gradually spreads from the center area of ​​the pot body to the side wall area of ​​the pot body. That is, the first change curve of the temperature in the center area of ​​the pot body and the second change curve of the temperature in the side wall area of ​​the pot body meet the preset high-heat steaming change law, then adjust the fan gear of the range hood to the first gear among multiple configuration gears, and it can be determined that the user's cooking scenario based on the stove and pot is low-heat steaming to high-heat steaming. Adjust the fan gear of the range hood to the first gear among multiple configuration gears.

[0138] Step S9023, when it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped, and it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped below the fifth set temperature within the seventh set time, the fan of the range hood is turned off.

[0139] For details, please see Figure 3Step S3024 of the illustrated embodiment will not be described in detail here.

[0140] In this embodiment, a range hood is also provided. Fig.11 As shown, including:

[0141] The temperature collecting device 1101 is used to collect the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body;

[0142] The controller 1102 is connected to the temperature acquisition device, and the controller includes: a memory and a processor. The memory and the processor are communicatively connected to each other. The memory stores computer instructions. The processor executes the computer instructions to execute the fan control method of the range hood according to the first aspect of the claim or any corresponding embodiment thereof.

[0143] The present invention also provides a range hood controller, see Fig.12 , Fig.12 is a schematic diagram of the structure of a controller of a range hood provided by an optional embodiment of the present invention, such as Fig.12 As shown, the controller of the range hood includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. The various components are connected to each other using different buses for communication, and can be installed on a common motherboard or installed in other ways as needed. The processor can process instructions executed in the controller of the range hood, including instructions stored in or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple range hood controllers can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Fig.12 A processor 10 is taken as an example.

[0144] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0145] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0146] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required by at least one function; the data storage area may store data created according to the use of the range hood controller, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage devices. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the range hood controller via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0147] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0148] The controller of the range hood further includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Fig.12 The example of connecting through bus is taken in the following.

[0149] The input device 30 can receive input digital or character information, and generate key signal input related to the user settings and function control of the controller of the range hood, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibrating fan), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device may be a touch screen.

[0150] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0151] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0152] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A fan control method for a range hood, characterized in that: The range hood is provided with a temperature acquisition device for detecting the temperature of the pot body, and the method comprises: Obtain the temperature of the center area of ​​the pot and the temperature of the side wall area of ​​the pot; The fan of the range hood is controlled based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body.

2. The method according to claim 1, characterized in that: The controlling of the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body comprises: Based on detecting that the temperature of the central area of ​​the pot body or the temperature of the side wall area of ​​the pot body reaches the first set temperature within the first set time, the fan of the range hood is started.

3. The method according to claim 1, characterized in that The controlling of the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body comprises: If it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body both reach the second set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body conform to the preset cooking change law, the fan gear of the range hood is adjusted to the highest gear among the multiple configured gears.

4. The method according to claim 3, characterized in that The controlling of the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body further includes: After detecting that the temperature of the central area of ​​the pot body drops by a first set range within a third set time, it rises by a second set range within a fourth set time, and if it is detected that the temperature change amplitude of the side wall area of ​​the pot body is smaller than the temperature change amplitude of the central area of ​​the pot body within the third set time and within the fourth set range, the fan gear of the range hood is adjusted to the first gear; Wherein, the first gear is lower than the highest gear.

5. The method according to claim 4, characterized in that The controlling of the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body further includes: Based on the fact that the difference between the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body is not greater than the first set difference, and the temperature of the central area of ​​the pot body is lower than the temperature before it drops within the third set time, the fan gear of the range hood is adjusted to the lowest gear among multiple configured gears, or the fan gear of the range hood is lowered.

6. The method according to claim 1, characterized in that The controlling of the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body comprises: If it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body do not reach the second set temperature, and it is detected within the fifth set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body do not reach the third set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body meet the preset high-fire steaming change law, then the fan gear of the range hood is adjusted to the first gear among the multiple configuration gears; Wherein, the fifth set time is later than the second set time; The third set temperature is lower than the second set temperature; The first gear is lower than the highest gear among the multiple configuration gears of the range hood.

7. The method according to claim 6, characterized in that The controlling of the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body comprises: If it is detected within the second set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body do not reach the second set temperature, and it is detected within the sixth set time that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body do not reach the fourth set temperature, and the first change curve of the temperature of the central area of ​​the pot body and the second change curve of the temperature of the side wall area of ​​the pot body meet the preset low-fire steaming change law, then the fan gear of the range hood is adjusted to the first gear among the multiple configuration gears; When the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body both rise, and the first change rate of the temperature of the side wall area of ​​the pot body is greater than the second change rate of the temperature of the central area of ​​the pot body, adjusting the fan gear of the range hood to the lowest gear among the multiple configuration gears; Wherein, the sixth set time is later than the second set time; The fourth set temperature is lower than the third set temperature; The first gear is smaller than a highest gear among a plurality of configured gears of the range hood, and the first gear is larger than the lowest gear.

8. The method according to claim 1, characterized in that: The controlling of the fan of the range hood based on the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body comprises: When it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped, and it is detected that the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body have both dropped to below the fifth set temperature within the seventh set time, the fan of the range hood is turned off.

9. A range hood, characterized in that: include: A temperature collection device is used to collect the temperature of the central area of ​​the pot body and the temperature of the side wall area of ​​the pot body; A controller is connected to the temperature acquisition device, the controller includes: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the fan control method of the range hood according to any one of claims 1 to 8 by executing the computer instructions.

10. The range hood according to claim 9, characterized in that: The temperature acquisition device is an infrared temperature sensor.

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