Range hood control method and device and range hood

Abstract

The embodiment of the invention provides a range hood control method and device and a range hood, and relates to the field of kitchen appliance control. The method comprises the steps that the bottom temperature of a cooker is obtained, a current cooking mode is determined based on the bottom temperature of the cooker, and when the current cooking mode is indicated to be a strong cooking mode, the range hood is started; the fan device is controlled to operate according to the first power, the first oil smoke concentration at an outlet of the fan device is obtained, and based on the first oil smoke concentration, oil smoke is controlled to enter a main smoke pipe so as to enter an oil smoke inner exhaust mode or oil smoke is controlled to enter an outer exhaust pipe so as to enter an oil smoke outer exhaust mode. When the cooking mode is the strong cooking mode, internal and external circulation adjustment is performed based on the first oil smoke concentration, so that the oil smoke filtering effect is improved.

Description

Technical Field

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

[0002] The currently used island-type all-in-one machine is a combination of an electric stove and a range hood, which integrates the electric stove and the range hood and embeds them in the stove top. The generated fumes are absorbed by the internal filter module, leaving only clean air, and finally the air is discharged into the kitchen space, forming a flowing internal circulation.

[0003] At present, the exhaust solution of island-type integrated units is basically based on a single internal circulation. When the oil smoke is large and the oil smoke is filtered based on the internal circulation, it will cause poor indoor air quality.

[0004] In order to improve the filtering effect of the internal circulation, it is necessary to improve the filtering effect of the filtering module, which makes the filtering cost higher. Summary of the invention

[0005] An object of the present invention is to provide a range hood control method, device and range hood, which can improve the oil fume filtering effect without increasing the filtering cost.

[0006] In order to achieve the above purpose, the technical solution adopted by the embodiment of the present invention is as follows:

[0007] In a first aspect, an embodiment of the present invention provides a range hood control method, which is applied to a range hood controller, wherein the range hood further comprises a fan device and an exhaust device, the controller is communicatively connected with the fan device and the exhaust device, the exhaust device comprises a main smoke pipe and an external smoke exhaust pipe, the main smoke pipe is connected with the external smoke exhaust pipe, the main smoke pipe is used to exhaust the smoke indoors, and the external smoke exhaust pipe is used to exhaust the smoke to a public smoke duct, the method comprises:

[0008] Get the temperature of the bottom of the cooker;

[0009] Determining the current cooking mode based on the temperature of the bottom of the cookware;

[0010] When the current cooking mode is indicated as a strong cooking mode, controlling the fan device to operate at a first power and obtaining a first oil fume concentration at an outlet of the fan device;

[0011] Based on the first oil fume concentration, the oil fume is controlled to enter the main smoke pipe to enter the oil fume internal exhaust mode, or the oil fume is controlled to enter the external smoke exhaust pipe to enter the oil fume external exhaust mode.

[0012] In an optional embodiment, based on the first oil fume concentration, the step of controlling the oil fume to enter the main fume pipe to enter the oil fume internal exhaust mode or controlling the oil fume to enter the external fume exhaust pipe to enter the oil fume external exhaust mode includes:

[0013] When the first oil fume concentration is greater than a first concentration threshold, controlling the oil fume to enter the external exhaust pipe to enter an oil fume external exhaust mode;

[0014] When the first oil smoke concentration is greater than the second concentration threshold and less than or equal to the first concentration threshold, the oil smoke is controlled to enter the main smoke pipe to enter the oil smoke internal exhaust mode, wherein the first concentration threshold is greater than the second concentration threshold.

[0015] In an optional embodiment, the main smoke pipe includes an oil removal device, a deodorization device and a first outlet, the deodorization device is arranged at the first outlet, the oil removal device is arranged in the main smoke pipe, and when the first oil smoke concentration is greater than the second concentration threshold and less than or equal to the first concentration threshold, after the step of controlling the oil smoke to enter the main smoke pipe to enter the oil smoke internal exhaust mode, the method further includes:

[0016] The oil smoke is controlled to be discharged from the first outlet so as to remove oil and odor from the oil smoke.

[0017] In an optional embodiment, the main smoke pipe further includes a second outlet, and the method further includes:

[0018] When the first oil smoke concentration is less than or equal to the second concentration threshold, controlling the oil smoke to enter the main smoke pipe to enter the oil smoke internal exhaust mode;

[0019] Control the oil smoke to be discharged from the second outlet.

[0020] In an optional embodiment, the step of determining the current cooking mode based on the temperature of the bottom of the cookware comprises:

[0021] When the temperature of the bottom of the cooker is less than or equal to the first preset temperature, determining that the current cooking mode is a low-grade cooking mode;

[0022] When the temperature of the bottom of the cooker is greater than a first preset temperature and less than or equal to a second preset temperature, determining that the current cooking mode is a strong cooking mode, wherein the second preset temperature is greater than the first preset temperature;

[0023] When the temperature of the bottom of the cooker is greater than the second preset temperature, it is determined that the current cooking mode is the stir-fry cooking mode.

[0024] In an optional embodiment, the main smoke pipe includes an oil removal device, a deodorization device, a first outlet and a second outlet, and the deodorization device is arranged at the first outlet. The method also includes:

[0025] When the current cooking mode is indicated as a low-speed cooking mode, the fan device is controlled to operate at a second power and the oil smoke is controlled to enter the main smoke pipe to enter the oil smoke internal exhaust mode, wherein the second power is less than the first power;

[0026] Obtaining a second oil fume concentration at an outlet of the fan device;

[0027] Comparing the second oil smoke concentration with a third concentration threshold, wherein the third concentration threshold is greater than the second concentration threshold and less than the first concentration threshold;

[0028] When the second oil fume concentration is greater than the third concentration threshold, the oil fume is controlled to be discharged from the first outlet to remove oil and odor from the oil fume;

[0029] When the second oil fume concentration is less than or equal to the third concentration threshold, the oil fume is controlled to be discharged from the second outlet to remove oil from the oil fume.

[0030] In an optional embodiment, the range hood further includes a motor, and the method further includes:

[0031] When the current cooking mode is indicated as the stir-fry cooking mode, the current speed of the motor and the current of the motor are obtained;

[0032] Determine the current operating parameters of the exhaust device based on the current speed and current;

[0033] Determine the drag coefficient based on current operating condition parameters;

[0034] comparing the drag coefficient to a preset drag coefficient;

[0035] When the resistance coefficient is less than or equal to the preset resistance coefficient, the fan device is controlled to operate at a third power, and the oil smoke is controlled to enter the external exhaust pipe to enter the oil smoke external exhaust mode, wherein the third power is greater than the first power;

[0036] When the resistance coefficient is greater than the preset resistance coefficient, the oil smoke is controlled to enter the main smoke pipe to enter the oil smoke internal exhaust mode.

[0037] In an optional embodiment, the main smoke pipe further includes a first valve and a second valve, the first valve is used to close the external smoke exhaust pipe or close the main smoke pipe, and the second valve is arranged between the first outlet and the second outlet to close the first outlet or close the second outlet.

[0038] In a second aspect, an embodiment of the present invention provides a range hood control device, which is applied to a range hood controller. The range hood further includes a fan device and an exhaust device. The exhaust device includes a main smoke pipe and an external smoke exhaust pipe. The main smoke pipe is connected to the external smoke exhaust pipe. The main smoke pipe is used to exhaust the smoke indoors. The external smoke exhaust pipe is used to exhaust the smoke to a public flue. The device includes:

[0039] An acquisition module is used to obtain the temperature of the bottom of the cooker;

[0040] A determination module, used for determining a current cooking mode based on the temperature of the bottom of the cooker;

[0041] The control module is used to, when the current cooking mode is indicated as a strong cooking mode, control the fan device to operate at a first power and obtain a first oil fume concentration at the outlet of the fan device; based on the first oil fume concentration, control the oil fume to enter the main smoke duct to enter the oil fume internal exhaust mode or control the oil fume to enter the external smoke exhaust duct to enter the oil fume external exhaust mode.

[0042] In a third aspect, an embodiment of the present invention provides a range hood, which includes a controller, a fan device and an exhaust device, the controller being communicatively connected with the fan device and the exhaust device, the exhaust device including a main smoke duct and an external smoke exhaust duct, the main smoke duct being connected to the external smoke exhaust duct, the main smoke duct being used to exhaust oil smoke into the room, and the external smoke exhaust duct being used to exhaust oil smoke to a public flue; the controller is used to implement the steps of the range hood control method.

[0043] The present invention has the following beneficial effects:

[0044] The present invention obtains the temperature of the bottom of the cooker, determines the current cooking mode based on the temperature of the bottom of the cooker, and when the current cooking mode indicates that the cooking mode is the strong gear cooking mode, controls the fan device to operate at the first power and obtains the first oil fume concentration at the outlet of the fan device, and controls the oil fume to enter the main smoke pipe to enter the oil fume internal exhaust mode or controls the oil fume to enter the external smoke exhaust pipe to enter the oil fume external exhaust mode based on the first oil fume concentration. When the cooking mode is the strong gear cooking mode, the present invention adjusts the internal and external circulation based on the first oil fume concentration, thereby improving the oil fume filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments 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.

[0046] Figure 1 A block diagram of a range hood provided by an embodiment of the present invention;

[0047] Figure 2 One of the flow charts of a range hood control method provided by an embodiment of the present invention;

[0048] Figure 3 A schematic diagram of the structure of a range hood provided by an embodiment of the present invention;

[0049] Figure 4 A second flow chart of a range hood control method provided by an embodiment of the present invention;

[0050] Figure 5 One of the main smoke pipe structure schematic diagrams provided in an embodiment of the present invention;

[0051] Figure 6 A third flow chart of a range hood control method provided by an embodiment of the present invention;

[0052] Figure 7 A fourth flow chart of a range hood control method provided by an embodiment of the present invention;

[0053] Figure 8 A fifth flow chart of a range hood control method provided by an embodiment of the present invention;

[0054] Fig. 9 This is the second schematic diagram of the main smoke pipe structure of an embodiment of the present invention;

[0055] Fig.10 This is a structural block diagram of a range hood control device provided in an embodiment of the present invention.

[0056] Icons: 100-range hood; 110-range hood control device; 120-memory; 130-controller; 1-fan device; 2-exhaust device; 21-main smoke duct; 22-external smoke exhaust duct; 211-oil removal device; 212-odor removal device; 213-first outlet; 214-second outlet; 215-first valve; 216-second valve; 111-acquisition module; 112-determination module; 113-control module. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions 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. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0058] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0060] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0061] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] After research, it was found that the current island-type integrated machine can only achieve internal circulation oil fume filtration. When the oil fume is large, the oil fume filtration based on the internal circulation will cause poor indoor air quality. In order to improve the filtering effect of the internal circulation, it is necessary to improve the filtering effect of the filter module, which makes the filtering cost higher.

[0064] In view of the discovery of the above problems, the present embodiment provides a range hood control method, device and range hood, which can obtain the temperature of the bottom of the cooker and determine the current cooking mode based on the temperature of the bottom of the cooker. When the current cooking mode indicates that the cooking mode is a strong gear, the fan device is controlled to operate at a first power and the first oil fume concentration at the outlet of the fan device is obtained. Based on the first oil fume concentration, the oil fume is controlled to enter the main smoke pipe to enter the oil fume internal exhaust mode or to enter the external smoke exhaust pipe to enter the oil fume external exhaust mode. When the cooking mode is the strong gear cooking mode, the present invention adjusts the internal and external circulation based on the first oil fume concentration, thereby improving the oil fume filtering effect. The scheme provided by the present embodiment is described in detail below.

[0065] In a possible implementation, the range hood may be, but is not limited to, an integrated stove, a side-suction range hood, a ceiling-suction range hood, a downdraft range hood, a desktop range hood, or the like.

[0066] Please refer to Figure 1 , Figure 1 1 is a schematic diagram of the structure of the range hood 100 provided in an embodiment of the present invention. The range hood 100 may also include Figure 1More or fewer components as shown, or with Figure 1 Different configurations are shown. Figure 1 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0067] The range hood 100 includes a range hood control device 110 , a memory 120 and a controller 130 .

[0068] The components of the memory 120 and the controller 130 are electrically connected to each other directly or indirectly to achieve data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The range hood control device 110 includes at least one software function module that can be stored in the memory 120 in the form of software or firmware or fixed in the operating system (OS) of the range hood 100. The controller 130 is used to execute the executable modules stored in the memory 120, such as the software function modules and computer programs included in the range hood control device 110.

[0069] The memory 120 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory 120 is used to store a program, and the controller 130 executes the program after receiving an execution instruction.

[0070] Please refer to Figure 2 , Figure 2 For application Figure 1 The flowchart of a range hood control method of the range hood 100 is shown in FIG. 1 , and the method including each step is described in detail below.

[0071] S201: Obtain the temperature of the bottom of the cooker.

[0072] S202: Determine the current cooking mode based on the temperature of the bottom of the cookware.

[0073] S203: When the current cooking mode is indicated as the strong cooking mode, the fan device is controlled to operate at a first power and a first oil fume concentration at an outlet of the fan device is obtained.

[0074] S204: Based on the first oil fume concentration, control the oil fume to enter the main fume pipe to enter the oil fume internal exhaust mode or control the oil fume to enter the external fume exhaust pipe to enter the oil fume external exhaust mode.

[0075] like Figure 3 , which is a schematic diagram of the structure of a range hood, the range hood 100 includes a controller 130, a fan device 1 and an exhaust device 2, and the controller 130 is in communication connection with the fan device 1 and the exhaust device 2. The exhaust device 2 includes a main smoke pipe 21 and an external smoke exhaust pipe 22, the main smoke pipe 21 is connected to the external smoke exhaust pipe 22, the main smoke pipe 21 is used to exhaust the smoke indoors, and the external smoke exhaust pipe 22 is used to exhaust the smoke to a public flue.

[0076] The temperature of the bottom of the cooker is obtained, and the current cooking mode is determined based on the temperature of the bottom of the cooker. Specifically, when the temperature of the bottom of the cooker is less than or equal to a first preset temperature, the current cooking mode is determined to be a weak cooking mode, and when the temperature of the bottom of the cooker is greater than the first preset temperature and less than or equal to a second preset temperature, the current cooking mode is determined to be a strong cooking mode, wherein the second preset temperature is greater than the first preset temperature, and when the temperature of the bottom of the cooker is greater than the second preset temperature, the current cooking mode is determined to be a stir-fry cooking mode.

[0077] It should be noted that the first preset temperature can be set to 70 degrees, 80 degrees, 90 degrees, etc., and the second preset temperature can be set to 110 degrees, 120 degrees, 130 degrees, etc., and the embodiment of the present invention does not impose specific limitations on this.

[0078] For example, when the first preset temperature is set to 80 degrees and the second preset temperature is set to 120 degrees, when the temperature at the bottom of the cooker is less than or equal to 80 degrees, the current cooking mode is determined to be the weak cooking mode. When the temperature at the bottom of the cooker is greater than 80 degrees and less than or equal to 120 degrees, the current cooking mode is determined to be the strong cooking mode. When the temperature at the bottom of the cooker is greater than 120 degrees, the current cooking mode is determined to be the stir-fry cooking mode.

[0079] When it is determined that the current cooking mode indication is the strong cooking mode, the fan device 1 is controlled to operate at a first power and a first oil fume concentration at an outlet of the fan device 1 is obtained.

[0080] The control enters the oil fume internal exhaust mode or the oil fume external exhaust mode based on the first oil fume concentration. When the first oil fume concentration is greater than the first concentration threshold, the oil fume external exhaust mode is entered, and the oil fume is controlled to enter the external exhaust pipe 22. When the first oil fume concentration is less than or equal to the first concentration threshold, the oil fume internal exhaust mode is entered, and the oil fume is controlled to enter the main smoke pipe 21.

[0081] The present invention realizes switching between internal and external circulation by setting a main smoke duct 21 and an external smoke exhaust duct 22, and based on the first oil fume concentration at the outlet of the fan device 1, controls the oil fume to enter the main smoke duct 21 or the external smoke exhaust duct 22, so as to directly control the oil fume to enter the external smoke exhaust duct 22 when the first oil fume concentration is greater than the first concentration threshold, without filtering the oil fume greater than the first concentration threshold, thereby reducing the filtering cost.

[0082] Based on the first oil smoke concentration, there are multiple implementations of controlling the oil smoke to enter the main smoke pipe to enter the oil smoke internal exhaust mode or controlling the oil smoke to enter the external smoke exhaust pipe to enter the oil smoke external exhaust mode. In one implementation, Figure 4 As shown, the following steps are included:

[0083] S204-1: When the first oil fume concentration is greater than a first concentration threshold, control the oil fume to enter the external exhaust pipe to enter the oil fume external exhaust mode.

[0084] S204-2: When the first oil smoke concentration is greater than the second concentration threshold and less than or equal to the first concentration threshold, control the oil smoke to enter the main smoke pipe to enter the oil smoke internal exhaust mode.

[0085] The first concentration threshold is greater than the second concentration threshold.

[0086] It should be noted that the first concentration threshold can be set to 0.5 mg / m 3 The second concentration threshold can be set to 0.02 mg / m 3 .

[0087] For example, the first oil smoke concentration is 0.5 mg / m 3 In comparison, the first oil fume concentration is greater than 0.5 mg / m 3 When the first oil fume concentration is greater than 0.02 mg / m 3 And less than or equal to 0.5mg / m 3 It indicates that the oil smoke filtered by the fan device 1 can be filtered by the filter device in the main smoke pipe 21. Therefore, the oil smoke is controlled to enter the main smoke pipe 21 to enter the oil smoke internal exhaust mode, and the oil smoke is filtered by the filter device in the main smoke pipe 21 and then discharged into the room.

[0088] like Figure 5 As shown, the main smoke pipe 21 includes an oil removal device 211 , a deodorization device 212 and a first outlet 213 . The deodorization device 212 is arranged at the first outlet 213 , and the oil removal device 211 is arranged inside the main smoke pipe 21 .

[0089] When the first oil fume concentration is greater than the second concentration threshold and less than or equal to the first concentration threshold, the oil fume is controlled to enter the main smoke duct 21 to enter the oil fume internal exhaust mode, and the oil fume is controlled to be discharged from the first outlet 213, the oil removal device 211 in the main smoke duct 21 removes oil from the oil fume, and the deodorization device 212 at the first outlet 213 deodorizes the oil fume. When the oil fume is discharged from the first outlet 213, it passes through the oil removal device 211 and the deodorization device 212, so that the oil fume discharged from the first outlet 213 is deoiled and deodorized.

[0090] Another way to control the range hood is as follows: Figure 6 As shown, the following steps are included:

[0091] S301: When the first oil smoke concentration is less than or equal to the second concentration threshold, control the oil smoke to enter the main smoke pipe to enter the oil smoke internal exhaust mode.

[0092] S302: Control the oil smoke to be discharged from the second outlet.

[0093] When the current cooking mode is indicated as the high-speed cooking mode, the fan device 1 is controlled to operate at the first power and the first oil fume concentration at the outlet of the fan device 1 is obtained. When the first oil fume concentration is less than or equal to the second concentration threshold, the oil fume is controlled to enter the main smoke duct 21 to enter the oil fume internal exhaust mode.

[0094] Still refer to Figure 5 The main smoke pipe 21 also includes a second outlet 214 .

[0095] For example, the second concentration threshold is 0.02 mg / m 3 When the first oil fume concentration is 0.02mg / m 3 In comparison, the first oil smoke concentration is less than or equal to 0.02 mg / m 3 It indicates that the oil fume concentration after filtering by the fan device 1 is small and no deodorization treatment is required, and the oil fume is controlled to enter the main smoke pipe 21 and to be discharged from the second outlet 214, that is, the oil fume passing through the second outlet 214 is only processed by the oil removal device 211, and is not processed by the deodorization device 212.

[0096] In order to further improve the effect of oil fume filtration, an oil fume detector is arranged behind the oil removal device 211. The oil fume concentration behind the oil removal device 211 is detected by the oil fume detector, and the oil fume concentration behind the oil removal device 211 is compared with the fourth concentration threshold. When the oil fume concentration behind the oil removal device 211 is less than or equal to the fourth concentration threshold, the oil fume is controlled to be discharged from the second outlet 214. When the oil fume concentration behind the oil removal device 211 is greater than the fourth concentration threshold, the oil fume is controlled to be discharged from the first outlet 213.

[0097] There are multiple ways to control the range hood when the current cooking mode indicates a low-speed cooking mode. In one implementation, Figure 7 As shown, the following steps are included:

[0098] S401: When the current cooking mode is indicated as a low-speed cooking mode, the fan device is controlled to operate at a second power and the oil smoke is controlled to enter the main smoke duct to enter the oil smoke internal exhaust mode.

[0099] The second power is smaller than the first power.

[0100] S402: Obtain a second oil fume concentration at an outlet of the fan device.

[0101] S403: Compare the second oil smoke concentration with the third concentration threshold.

[0102] The third concentration threshold is greater than the second concentration threshold and less than the first concentration threshold.

[0103] S404: When the second oil fume concentration is greater than the third concentration threshold, the oil fume is controlled to be discharged from the first outlet to remove oil and odor from the oil fume.

[0104] S405: When the second oil fume concentration is less than or equal to a third concentration threshold, the oil fume is controlled to be discharged from the second outlet to remove oil from the oil fume.

[0105] Still refer to Figure 5 When the current cooking mode indicates a low-speed cooking mode, the fan device 1 is controlled to operate at the second power, and the oil smoke is controlled to enter the main smoke pipe 21 to enter the oil smoke internal exhaust mode.

[0106] When the current cooking mode is indicated as a weak cooking mode, the temperature at the bottom of the cooker is less than or equal to the first preset temperature. Since it is a weak cooking mode, it is determined that the generated oil smoke is small, so the oil smoke is controlled to enter the main smoke pipe 21 to enter the oil smoke internal exhaust mode.

[0107] In the low-speed cooking mode, the fan device 1 is controlled to operate at a second power, which is less than the first power, that is, the operating power of the fan device 1 is different in different cooking modes.

[0108] Exemplarily, when the current cooking mode is indicated as a weak cooking mode, the fan device 1 operates at the second power, when the current cooking mode is a strong cooking mode, the fan device 1 operates at the first power, and when the current cooking mode is a stir-fry cooking mode, the fan device 1 operates at the third power. The second power is less than the first power, and the first power is less than the third power.

[0109] After the fan device 1 is operated at the second power, a second oil fume concentration at the outlet of the fan device 1 is obtained. When the second oil fume concentration is greater than the third concentration threshold, the oil fume is controlled to be discharged from the first outlet 213, and when the second oil fume concentration is less than or equal to the third concentration threshold, the oil fume is controlled to be discharged from the second outlet 214.

[0110] It should be noted that the third concentration threshold can be set to 0.1 mg / m 3 , 0.2mg / m 3 or 0.3 mg / m 3 The embodiment of the present invention does not make any specific limitation on this. The third concentration threshold is greater than the second concentration threshold, and the third concentration threshold is less than the first concentration threshold.

[0111] In order to improve the oil fume filtering effect, an oil fume detector can be set behind the oil removal device 211. In the oil fume internal exhaust mode, the oil fume concentration behind the oil removal device 211 is detected by the oil fume detector, and the oil fume concentration behind the oil removal device 211 is compared with the fourth concentration threshold. When the oil fume concentration behind the oil removal device 211 is less than or equal to the fourth concentration threshold, the oil fume is controlled to be discharged from the second outlet 214. When the oil fume concentration behind the oil removal device 211 is greater than the fourth concentration threshold, the oil fume is controlled to be discharged from the first outlet 213.

[0112] The fourth concentration threshold is set based on a trigger threshold for judging whether the oil smoke entering the internal exhaust mode and filtered by the oil removal device 211 is discharged from the first outlet 213 or the second outlet 214 .

[0113] When the current cooking mode is indicated as the stir-fry cooking mode, there are multiple ways to control the range hood. In one implementation, Figure 8 As shown, the following steps are included:

[0114] S501: When the current cooking mode is indicated as the stir-fry cooking mode, the current rotation speed of the motor and the current of the motor are obtained.

[0115] S502: Determine current operating parameters of the exhaust device based on the current rotation speed and current.

[0116] S503: Determine the drag coefficient based on the current operating condition parameters.

[0117] S504: Compare the drag coefficient with a preset drag coefficient.

[0118] S505: When the resistance coefficient is less than or equal to the preset resistance coefficient, the fan device is controlled to operate at a third power, and the oil smoke is controlled to enter the external exhaust pipe to enter the oil smoke external exhaust mode.

[0119] The third power is greater than the first power.

[0120] S506: When the resistance coefficient is greater than the preset resistance coefficient, the oil smoke is controlled to enter the main smoke pipe to enter the oil smoke internal exhaust mode.

[0121] When the current cooking mode is indicated as the stir-fry cooking mode, that is, when the temperature of the bottom of the cooker is greater than the second preset temperature, it is determined that the current cooking mode is the stir-fry cooking mode.

[0122] When the current cooking mode is indicated as the stir-fry cooking mode, the fan device 1 is controlled to operate at the third power, and the current speed of the motor and the current of the motor are obtained. The third power is greater than the second power of the fan device 1 when the current cooking mode is indicated as the weak cooking mode, and the third power is greater than the first power of the fan device 1 when the current cooking mode is indicated as the strong cooking mode.

[0123] The motor of the fan device 1 runs at a specific calibration current i0, and the motor will run at a specific speed under the specific back pressure of the user's home. For the fan, when testing its full-condition performance, a certain current i0 is input, and a complete PQ curve can be obtained, that is, P is wind pressure, Q is wind volume, and a curve diagram of wind pressure and wind volume is obtained.

[0124] Therefore, by acquiring the current rotation speed of the motor and the current of the motor, the current operating parameters of the exhaust device 2 can be obtained, and the current operating parameters include wind pressure and air volume.

[0125] The resistance coefficient is calculated based on the current operating parameters. The resistance coefficient represents the resistance coefficient of the public flue connected to the external smoke exhaust pipe 22. When the resistance coefficient is large, it indicates that the resistance of the public flue is large. When the resistance coefficient is small, it indicates that the resistance of the public flue is small.

[0126] It should be noted that the preset resistance coefficient can be set according to actual conditions in the present invention. For example, the preset resistance coefficient can be set to 5, 6, 7, etc., and the embodiment of the present invention does not impose any specific limitation on this.

[0127] The drag coefficient can be calculated using the following formula:

[0128] P=K*Q2, where P is the wind pressure in the current operating parameters, Q is the wind volume in the current operating parameters, and K is the resistance coefficient.

[0129] The resistance coefficient is compared with the preset resistance coefficient. When the resistance coefficient is less than or equal to the preset resistance coefficient, the fan device 1 is controlled to operate at the third power, and the oil smoke is controlled to enter the external exhaust pipe 22 to enter the oil smoke external exhaust mode. When the current cooking mode is indicated as the stir-fry cooking mode, more oil smoke will be generated. When the resistance coefficient is less than or equal to the preset resistance coefficient, it indicates that the resistance of the public flue is relatively small, and the oil smoke external exhaust mode is the best choice.

[0130] When the resistance coefficient is greater than the preset resistance coefficient, the oil smoke is controlled to enter the main smoke pipe 21 to enter the oil smoke internal exhaust mode. When the current cooking mode is indicated as the stir-fry cooking mode, more oil smoke will be generated. When the resistance coefficient is greater than the preset resistance coefficient, it indicates that the resistance of the public flue is large, and the oil smoke internal exhaust mode is the best choice, and the oil smoke is controlled to be discharged from the first outlet 213.

[0131] In order to improve the oil fume filtering effect, an oil fume detector can be set behind the oil removal device 211. In the oil fume internal exhaust mode, the oil fume concentration behind the oil removal device 211 is detected by the oil fume detector, and the oil fume concentration behind the oil removal device 211 is compared with the fourth concentration threshold. When the oil fume concentration behind the oil removal device 211 is less than or equal to the fourth concentration threshold, the oil fume is controlled to be discharged from the second outlet 214. When the oil fume concentration behind the oil removal device 211 is greater than the fourth concentration threshold, the oil fume is controlled to be discharged from the first outlet 213.

[0132] There are many ways to control the oil smoke to enter the main smoke pipe 21 or the external smoke exhaust pipe 22, such as Fig. 9 The main smoke pipe 21 further includes a first valve 215 , which is disposed at a connection between the main smoke pipe 21 and the external smoke exhaust pipe 22 . The first valve 215 is used to close the external smoke exhaust pipe 22 or the main smoke pipe 21 .

[0133] The first valve 215 rotates around the O1 and O2 axes, and the O1O2 axes are on the external smoke exhaust pipe 22 and the main smoke pipe 21. The first valve 215 has a power module (not shown in the figure) that drives it to rotate around the O1O2 axes. The first valve 215 can rotate around the O1O2 axes in the direction shown. When the first valve 215 rotates to the A position, it closes the external smoke exhaust pipe 22, and the oil smoke will not be discharged into the public flue through the external smoke exhaust pipe 22, but will continue to flow into the main smoke pipe 21. When the first valve 215 rotates to the B position, it closes the main smoke pipe 21, and the oil smoke will all enter the external smoke exhaust pipe 22, entering the oil smoke external exhaust mode. When the first valve 215 rotates to the A position, the oil smoke remains in the main smoke pipe 21, and after flowing through the first valve 215, it will pass through the degreasing device 211 for degreasing treatment.

[0134] Still refer to Fig. 9 The main smoke pipe 21 further includes a second valve 216 , which is disposed between the first outlet 213 and the second outlet 214 to close the first outlet 213 or the second outlet 214 .

[0135] like Fig. 9As shown, the second valve 216 rotates around O3O4 and can be closed to two positions, C and D. After passing through the oil removal device 211, the oil smoke will enter two different outlets under the selection of the second valve 216. When the second valve 216 is closed to point C, the main smoke pipe 21 will be connected to the second outlet 214 and directly discharged into the room, forming an internal circulation. When the second valve 216 is closed to point D, the main smoke pipe 21 will be connected to the deodorization device 212 and discharged into the room through the first outlet 213, also forming an internal circulation.

[0136] Please refer to Fig.10 The embodiment of the present invention also provides a method for applying Figure 1 The range hood control device 110 of the range hood 100 includes:

[0137] An acquisition module 111 is used to acquire the temperature of the bottom of the cooker;

[0138] A determination module 112, configured to determine a current cooking mode based on the temperature of the bottom of the cooker;

[0139] The control module 113 is used to control the fan device to operate at a first power and obtain a first oil fume concentration at the outlet of the fan device when the current cooking mode is indicated as a strong cooking mode; based on the first oil fume concentration, control the oil fume to enter the main smoke duct to enter the oil fume internal exhaust mode or control the oil fume to enter the external smoke exhaust duct to enter the oil fume external exhaust mode.

[0140] The present invention further provides a range hood 100, which includes a controller 130 and a memory 120. The memory 120 stores computer executable instructions, and when the computer executable instructions are executed by the controller 130, the range hood control method is implemented.

[0141] The embodiment of the present invention further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by the controller 130, the range hood control method is implemented.

[0142] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0143] In addition, each functional module in each embodiment of the present invention can be integrated together to form an independent part, or each module can exist separately, or two or more modules can be integrated to form an independent part. If the function is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code.

[0144] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0145] The above are only various embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A range hood control method, characterized in that: A controller applied to a range hood, the range hood further comprising a fan device and an exhaust device, the controller being communicatively connected with the fan device and the exhaust device, the exhaust device comprising a main smoke pipe and an external smoke exhaust pipe, the main smoke pipe being connected with the external smoke exhaust pipe, the main smoke pipe being used to exhaust the smoke indoors, the external smoke exhaust pipe being used to exhaust the smoke to a common smoke duct, the method comprising: Get the temperature of the bottom of the cooker; determining a current cooking mode based on the temperature of the bottom of the cookware; When the current cooking mode is indicated as a strong cooking mode, controlling the fan device to operate at a first power and obtaining a first oil fume concentration at an outlet of the fan device; Based on the first oil fume concentration, the oil fume is controlled to enter the main smoke pipe to enter the oil fume internal exhaust mode, or the oil fume is controlled to enter the external smoke exhaust pipe to enter the oil fume external exhaust mode.

2. The method according to claim 1, characterized in that: The step of controlling the oil smoke to enter the main smoke pipe to enter the oil smoke internal exhaust mode or controlling the oil smoke to enter the external smoke exhaust pipe to enter the oil smoke external exhaust mode based on the first oil smoke concentration includes: When the first oil fume concentration is greater than a first concentration threshold, controlling the oil fume to enter the external fume exhaust pipe to enter an oil fume external exhaust mode; When the first oil smoke concentration is greater than a second concentration threshold and less than or equal to the first concentration threshold, the oil smoke is controlled to enter the main smoke pipe to enter an oil smoke internal exhaust mode, wherein the first concentration threshold is greater than the second concentration threshold.

3. The method according to claim 2, characterized in that The main smoke pipe comprises an oil removal device, a deodorization device and a first outlet, the deodorization device is arranged at the first outlet, the oil removal device is arranged in the main smoke pipe, and when the first smoke concentration is greater than a second concentration threshold and less than or equal to the first concentration threshold, after the step of controlling the smoke to enter the main smoke pipe to enter the smoke internal exhaust mode, the method further comprises: The oil fume is controlled to be discharged from the first outlet so as to remove oil and odor from the oil fume.

4. The method according to claim 2, characterized in that: The main smoke pipe further includes a second outlet, and the method further includes: When the first oil smoke concentration is less than or equal to the second concentration threshold, controlling the oil smoke to enter the main smoke pipe to enter the oil smoke internal exhaust mode; The oil smoke is controlled to be discharged from the second outlet.

5. The method according to claim 1, characterized in that The step of determining the current cooking mode based on the temperature of the bottom of the cooker comprises: When the temperature of the bottom of the cooker is less than or equal to a first preset temperature, determining that the current cooking mode is a low-grade cooking mode; When the temperature of the bottom of the cooker is greater than the first preset temperature and less than or equal to a second preset temperature, determining that the current cooking mode is a strong cooking mode, wherein the second preset temperature is greater than the first preset temperature; When the temperature of the bottom of the cooker is greater than the second preset temperature, it is determined that the current cooking mode is the stir-fry cooking mode.

6. The method according to claim 2, characterized in that The main smoke pipe includes an oil removal device, a deodorization device, a first outlet and a second outlet, and the deodorization device is arranged at the first outlet. The method further includes: When the current cooking mode indicates a low-speed cooking mode, controlling the fan device to operate at a second power and controlling the oil smoke to enter the main smoke pipe to enter an oil smoke internal exhaust mode, wherein the second power is less than the first power; Obtaining a second oil fume concentration at an outlet of the fan device; Comparing the second oil smoke concentration with a third concentration threshold, wherein the third concentration threshold is greater than the second concentration threshold and less than the first concentration threshold; When the second oil fume concentration is greater than the third concentration threshold, controlling the oil fume to be discharged from the first outlet to remove oil and odor from the oil fume; When the second oil fume concentration is less than or equal to the third concentration threshold, the oil fume is controlled to be discharged from the second outlet to remove oil from the oil fume.

7. The method according to claim 1, characterized in that The range hood further includes a motor, and the method further includes: When the current cooking mode is indicated as a stir-fry cooking mode, obtaining a current rotation speed of the motor and a current of the motor; Determining current operating parameters of the exhaust device based on the current rotation speed and the current; Determining a drag coefficient based on the current operating condition parameters; comparing the drag coefficient with a preset drag coefficient; When the resistance coefficient is less than or equal to the preset resistance coefficient, the fan device is controlled to operate at a third power, and the oil smoke is controlled to enter the external smoke exhaust pipe to enter the oil smoke external exhaust mode, wherein the third power is greater than the first power; When the resistance coefficient is greater than the preset resistance coefficient, the oil smoke is controlled to enter the main smoke pipe to enter the oil smoke internal exhaust mode.

8. The method according to claim 6, characterized in that The main smoke pipe further includes a first valve and a second valve, wherein the first valve is used to close the external smoke exhaust pipe or the main smoke pipe, and the second valve is arranged between the first outlet and the second outlet to close the first outlet or the second outlet.

9. A range hood control device, characterized in that: A controller applied to a range hood, the range hood further comprising a fan device and an exhaust device, the exhaust device comprising a main smoke pipe and an external smoke exhaust pipe, the main smoke pipe being connected to the external smoke exhaust pipe, the main smoke pipe being used to exhaust the smoke indoors, the external smoke exhaust pipe being used to exhaust the smoke to a public flue, the device comprising: An acquisition module is used to obtain the temperature of the bottom of the cooker; A determination module, configured to determine a current cooking mode based on the temperature of the bottom of the cooker; A control module is used to control the fan device to operate at a first power and obtain a first oil fume concentration at the outlet of the fan device when the current cooking mode is indicated as a strong cooking mode; based on the first oil fume concentration, control the oil fume to enter the main smoke duct to enter the oil fume internal exhaust mode or control the oil fume to enter the external smoke exhaust duct to enter the oil fume external exhaust mode.

10. A range hood, characterized in that: The range hood includes a controller, a fan device and an exhaust device, the controller is communicatively connected with the fan device and the exhaust device, the exhaust device includes a main smoke duct and an external smoke exhaust duct, the main smoke duct is connected with the external smoke exhaust duct, the main smoke duct is used to exhaust the oil smoke into the room, and the external smoke exhaust duct is used to exhaust the oil smoke to a common flue; the controller is used to implement the steps of the method described in any one of claims 1 to 8.

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