A range hood and a control method thereof

Abstract

The application provides an extractor hood and a control method thereof, relates to the technical field of extractor hoods, and is used for improving the oil fume extraction effect of the extractor hood. The extractor hood comprises a motor, a smoke guide plate, a rotating speed sensor arranged on the motor and used for detecting the rotating speed value of the motor, and a controller configured to: when the extractor hood is in an operating state, acquire the working current value of the motor and the working rotating speed value of the motor through the rotating speed sensor; the working rotating speed value of the motor is used for representing the pressure value of the flue where the extractor hood is located; according to the working current value of the motor and the working rotating speed value of the motor, the target opening and closing angle of the smoke guide plate is determined; and the opening and closing angle of the smoke guide plate is adjusted to the target opening and closing angle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of range hood, and particularly relates to a range hood and a control method thereof. BACKGROUND

[0002] Nowadays, consumers pursue the quality of life more and more, and the consumers have higher requirements for the use experience of the range hood. The range hood which is more convenient and intelligent becomes the main target of the industry research and development.

[0003] However, the intelligence degree of the range hood is not high at present, which leads to poor oil fume suction effect of the range hood. How to improve the oil fume suction effect of the range hood is a problem to be solved urgently. SUMMARY

[0004] The present application provides a range hood and a control method thereof, which are used for improving the oil fume suction effect of the range hood.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a range hood, which comprises:

[0007] a motor;

[0008] a smoke guide plate;

[0009] a rotation speed sensor arranged on the motor and used for detecting a rotation speed value of the motor;

[0010] a controller configured to:

[0011] when the range hood is in a running state, obtaining a working current value of the motor and a working rotation speed value of the motor through the rotation speed sensor; the working rotation speed value of the motor is used for representing a pressure value of a flue in which the range hood is located;

[0012] determining a target opening and closing angle of the smoke guide plate according to the working current value of the motor and the working rotation speed value of the motor;

[0013] adjusting the opening and closing angle of the smoke guide plate to the target opening and closing angle.

[0014] The technical scheme provided by the embodiments of the present application brings at least the following beneficial effects: the range of the opening and closing of the smoke guide plate is intelligently adjusted according to the working current value and the working speed value of the motor when the range of the opening and closing of the smoke guide plate is adjusted, so that the range of the opening and closing of the smoke guide plate can be matched with the pressure value of the flue of the range hood, that is, the range of the opening and closing of the smoke guide plate can be matched with the amount of oil fume generated in the environment where the range hood is located, thereby ensuring that the range hood has a good absorption effect on oil fume, and the intelligent degree of the range hood is improved, thereby bringing a good user experience.

[0015] In some embodiments, when the controller is configured to determine the target opening and closing angle of the smoke guide plate according to the working current value of the range hood and the working speed value of the motor, the following steps are specifically performed: the working gear of the motor is determined according to the working current value of the motor; the target opening and closing angle of the smoke guide plate is determined according to the working gear of the motor, the working speed value of the motor and a preset corresponding relationship; the preset corresponding relationship is the corresponding relationship among the working gear of the motor, the working speed value of the motor and the opening angle of the smoke guide plate.

[0016] In some embodiments, the range hood further comprises: a driving device, which is in transmission connection with the smoke guide plate and is used to adjust the range of the opening and closing of the smoke guide plate; and the controller is configured to specifically perform the following steps when the range of the opening and closing of the smoke guide plate is adjusted to the target opening and closing angle: the working of the driving device is controlled according to the target opening and closing angle of the smoke guide plate, so that the range of the opening and closing of the smoke guide plate reaches the target opening and closing angle.

[0017] In some embodiments, the driving device comprises a stepping motor; and when the driving device is a stepping motor, the controller is configured to specifically perform the following steps when the range of the opening and closing of the smoke guide plate is adjusted to the target opening and closing angle according to the target opening and closing angle of the smoke guide plate: the working of the stepping motor is controlled according to the target opening and closing angle of the smoke guide plate and the current opening and closing angle of the smoke guide plate, so that the range of the opening and closing of the smoke guide plate reaches the target opening and closing angle.

[0018] In some embodiments, the controller is configured to control the stepper motor to operate according to the target opening angle of the smoke guide plate and the current opening angle of the smoke guide plate, so that when the opening angle of the smoke guide plate reaches the target opening angle, the following steps are specifically performed: if the current opening angle of the smoke guide plate is below the target opening angle of the smoke guide plate, the stepper motor is controlled to rotate in a first direction by a first number of steps, so that the current opening angle of the smoke guide plate increases to the target opening angle; or, if the current opening angle of the smoke guide plate is above the target opening angle of the smoke guide plate, the stepper motor is controlled to rotate in a second direction by a second number of steps, so that the current opening angle of the smoke guide plate decreases to the target opening angle.

[0019] In a second aspect, the application provides a control method of a range hood, the method comprising: obtaining a working current value of a motor and a working speed value of the motor when the range hood is in an operating state; the working speed value of the motor being used to represent a pressure value of a flue in which the range hood is located; determining a target opening angle of a smoke guide plate according to the working current value of the motor and the working speed value of the motor; and adjusting the opening angle of the smoke guide plate to the target opening angle.

[0020] In some embodiments, the target opening angle of the smoke guide plate is determined according to the working current value of the motor and the working speed value of the motor, comprising: determining a working gear of the motor according to the working current value of the motor; determining the target opening angle of the smoke guide plate according to the working gear of the motor, the working speed value of the motor and a preset corresponding relationship; and the preset corresponding relationship being a corresponding relationship among the working gear of the motor, the working speed value of the motor and the opening angle of the smoke guide plate.

[0021] In some embodiments, the opening angle of the smoke guide plate is adjusted to the target opening angle, comprising: controlling a driving device to operate according to the target opening angle of the smoke guide plate, so that the opening angle of the smoke guide plate reaches the target opening angle.

[0022] In some embodiments, the driving device comprises a stepper motor, and in the case where the driving device is a stepper motor, the driving device is controlled to operate according to the target opening angle of the smoke guide plate, so that the opening angle of the smoke guide plate reaches the target opening angle, comprising: controlling the stepper motor to operate according to the target opening angle of the smoke guide plate and the current opening angle of the smoke guide plate, so that the opening angle of the smoke guide plate reaches the target opening angle.

[0023] In some embodiments, according to the target opening angle of the smoke guide plate and the current opening angle of the smoke guide plate, the step motor is controlled to work so that the opening angle of the smoke guide plate reaches the target opening angle, including: if the current opening angle of the smoke guide plate is below the target opening angle of the smoke guide plate, the step motor is controlled to rotate in a first direction for a first number of steps so that the current opening angle of the smoke guide plate increases to the target opening angle; or, if the current opening angle of the smoke guide plate is above the target opening angle of the smoke guide plate, the step motor is controlled to rotate in a second direction for a second number of steps so that the current opening angle of the smoke guide plate decreases to the target opening angle.

[0024] In a third aspect, the embodiments of the present application provide a controller, including: one or more processors; one or more memories; wherein the one or more memories are configured to store computer program codes, the computer program codes including computer instructions, when the one or more processors execute the computer instructions, the controller executes any of the control methods of the range hood provided in the second aspect.

[0025] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, the computer readable storage medium includes computer instructions, when the computer instructions are controlled on a computer, the computer executes any of the control methods of the range hood provided in the second aspect.

[0026] In a fifth aspect, the embodiments of the present application provide a computer program product, the computer program product can be directly loaded into a memory and contains software codes, the computer program product is loaded and executed by a computer, and can realize any of the control methods of the range hood provided in the second aspect.

[0027] It should be noted that the above computer instructions can be stored on the computer readable storage medium in whole or in part. The computer readable storage medium can be packaged together with the processor of the controller, or packaged separately from the processor of the controller, and the present application does not limit this.

[0028] The beneficial effects of the second aspect to the fifth aspect described in the present application can be analyzed with reference to the beneficial effects of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0030] Figure 1 A structural schematic diagram of an intelligent home system provided by the embodiments of the present application is shown in the figure;

[0031] Figure 2A structural schematic diagram of an extractor hood provided by an embodiment of the present application;

[0032] Figure 3 A structural schematic diagram of a stepper motor provided by an embodiment of the present application;

[0033] Figure 4 A hardware configuration block diagram of an extractor hood provided by an embodiment of the present application;

[0034] Figure 5 A flowchart of a control method of an extractor hood provided by an embodiment of the present application;

[0035] Figure 6 A flowchart of a control method of an extractor hood provided by an embodiment of the present application;

[0036] Figure 7 A flowchart of a control method of an extractor hood provided by an embodiment of the present application;

[0037] Figure 8 A flowchart of a control method of an extractor hood provided by an embodiment of the present application;

[0038] Figure 9 A control flowchart of an extractor hood provided by an embodiment of the present application;

[0039] Figure 10 A hardware structure schematic diagram of a controller provided by an embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0041] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0042] The terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply relative importance or a quantity of the specified technical features. Thus, features with "first", "second", "third" designations can include one or more of the features implicitly or explicitly.

[0043] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "connected", "connected", should be understood broadly, for example, can be fixed connection, or detachable connection, or integrally connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, when describing the pipeline, "connected" and "connected" used in the present application have the meaning of conducting. The specific meaning should be understood in combination with the context.

[0044] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to represent as an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "exemplary" or "for example" are intended to present the relevant concept in a specific manner.

[0045] Steaming, boiling, frying, frying and other cooking techniques account for a large proportion, so the kitchen oil fume is large, easy to make the kitchen environment become greasy and difficult to clean. The oil fume also contains many substances harmful to the human body, if people work in a room full of oil fume for a long time, it will cause many diseases to occur. Therefore, the extractor hood emerges as the times require, the fan in the extractor hood can produce negative pressure when working, most of the oil fume generated during cooking is sucked into the extractor hood, improving the environment of the kitchen and reducing the harm of oil fume to the environment of the kitchen and human health.

[0046] But the opening angle of the smoke guide plate of the existing extractor hood is fixed, and the opening angle of the smoke guide plate cannot be automatically adjusted according to the size of the public flue pressure, so that the absorption effect of the extractor hood on the oil fume is not good.

[0047] Based on this, the embodiments of the present application provide an extractor hood and a control method thereof, by acquiring the working current value of the motor when the extractor hood is in the running state, and acquiring the working speed value of the motor. Further, according to the working current value and the working speed value of the motor, the opening angle of the smoke guide plate of the extractor hood is intelligently adjusted, so that the adjusted opening angle of the smoke guide plate of the extractor hood can match the pressure value of the flue where the extractor hood is located, thereby improving the oil fume absorption effect of the extractor hood, and also improving the intelligent degree of the extractor hood.

[0048] Figure 1 A structural schematic diagram of an intelligent home system provided by an embodiment of the present application is shown in FIG. 1. Figure 1 As shown in FIG. 1, the intelligent home system 10 includes a cooking appliance 11, a cooking utensil 12, and an extractor hood 13.

[0049] In some embodiments, the cooking appliance 11 is used to heat the cooking utensil 12. The cooking appliance 11 can be a smart stove, a gas stove, an electromagnetic stove, etc.

[0050] In some embodiments, the cooking utensil 12 is placed on the cooking appliance 11 and used to hold food materials. The cooking utensil 12 can be a cooking utensil of different types, including an electromagnetic cooker, a sand pot, a porridge pot, a tin foil pot, a cup noodle instant pot, etc., and the embodiments of the present application do not limit the types of the cooking utensil.

[0051] In some embodiments, the extractor hood 13 is arranged above the cooking utensil 12 and used to absorb oil fume generated in the process of heating the cooking utensil 12 by the cooking appliance 11.

[0052] In some embodiments, the extractor hood 13 can be a variable frequency extractor hood.

[0053] In some embodiments, the extractor hood 13 can be a variable frequency extractor hood.

[0054] Figure 2 A structural schematic diagram of the extractor hood 13 provided by an embodiment of the present application is shown in FIG. 2. Figure 2 As shown in FIG. 2, the extractor hood 13 includes a machine body 101 and a smoke guide plate 102.

[0055] In some embodiments, the machine body 101 is used to protect the electrical elements inside the extractor hood 13, to close the passage between the inside and the outside of the extractor hood 13, and to avoid damage to the electrical elements.

[0056] In some embodiments, the smoke guide plate 102 is used to make the oil fume pass through the flue more smoothly. Under the action of rising, the oil fume touches the smoke guide plate 102 and can freely disperse around the smoke guide plate 102, thereby achieving the effect of balanced oil fume suction of the extractor hood.

[0057] In some embodiments, the machine body 101 is internally provided with a motor 103, a rotating speed sensor 104, a driving device 105, and a controller 106 (not shown in the figure).

[0058] In some embodiments, the motor 103 refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction, and is used to convert electric energy into kinetic energy to drive the fan of the extractor hood 13 to suck air.

[0059] In some embodiments, the motor 103 can be a brushless direct current motor (BLDCM).

[0060] In some embodiments, the rotation speed sensor 104 is a sensor that converts the rotation speed of a rotating object into an electrical quantity output.

[0061] In some embodiments, the rotation speed sensor 104 is arranged on the motor 103 and connected to the controller 106, for detecting the rotation speed value of the motor 103 and sending the detected rotation speed value of the motor 103 to the controller 106.

[0062] In some embodiments, the driving device 105 is in transmission connection with the smoke guide plate 102, for adjusting the opening and closing angle of the smoke guide plate 102.

[0063] In some embodiments, the driving device 105 is connected to the controller 106, for receiving the control signal sent by the controller 106 and working according to the control signal.

[0064] In some embodiments, the driving device 105 includes a stepping motor, Figure 3 A structural schematic diagram of a stepping motor provided by an embodiment of the present application.

[0065] In some embodiments, the stepping motor refers to an open-loop control element that converts an electrical pulse signal into an angular displacement or a linear displacement. It should be noted that, in the case where the driving device 105 is a stepping motor, the connection manner of the stepping motor and the smoke guide plate 102 is that the shaft end of the stepping motor is in transmission connection with the valve rod of the smoke guide plate 102.

[0066] In some embodiments, the controller 106 refers to a device that can generate an operation control signal according to an instruction operation code and a timing signal, for instructing the range hood 13 to execute a control instruction. Exemplarily, the controller 106 can be a central processing unit (CPU), a general processor network processor (NP), a digital signal processing (DSP), a programmable logic device (PLD), a microprocessor, a microcontroller, or any combination thereof. The controller can also be other devices with processing functions, such as a circuit, a device, or a software module, and the embodiments of the present application do not make any limitation in this regard.

[0067] Figure 4 A hardware configuration block diagram of the range hood 13 provided by an embodiment of the present application is shown in FIG. 2. Figure 4As shown, the range hood 13 can further include one or more of the following: a communicator 107, a human-machine interaction device 108, and a memory 109.

[0068] In some embodiments, the communicator 107 is a component for communicating with external devices or servers according to various communication protocol types. For example, the communicator 107 can include at least one of a wireless communication technology (WIFI) module, a Bluetooth module, a wired Ethernet module, and a near field communication (NFC) module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The communicator 107 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communicator 107 is connected to the controller 106, and the controller 106 can communicate with the terminal device through the communicator 107.

[0069] In some embodiments, the human-machine interaction device 108 is used to realize the interaction between the user and the range hood 13. The human-machine interaction device 108 can include one or more of physical keys or touch display panels. For example, the user can manually start the motor of the range hood 13 through the human-machine interaction device 108, and can also set the gear of the motor through the human-machine interaction device 108.

[0070] In some embodiments, the memory 109 is connected to the controller 106 and is used to store application programs and data. The controller 106 executes various functions and data processing of the range hood 11 by running the application programs and data stored in the memory 109. The memory 109 mainly includes a program storage area and a data storage area. The program storage area can store an operating system and at least one application program required by a function (such as a voice prompt function, an information display function, etc.); the data storage area can store data created according to the use of the range hood 11. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, such as a magnetic disk storage device, a flash memory device, or other volatile solid-state storage device, etc.

[0071] Although Figure 4 Not shown, the range hood 13 can further include a power supply device (such as a battery and a power management chip) for supplying power to each component. The battery can be logically connected to the controller 106 through the power management chip, so as to realize the power consumption management function of the range hood 13 through the power supply device.

[0072] It can be understood that the structure of the embodiments of the present application does not constitute a specific limitation of the range hood 13. In other embodiments of the present application, the range hood 13 can include more or fewer components than illustrated, or combine certain components, or split certain components, or different component arrangements. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0073] The embodiments of the present application provide a control method of a range hood, which is applied to a controller. The controller can be the controller 106 shown in the above Figure 4 , as shown in the above Figure 5 , the method comprises the following steps:

[0074] S101, obtaining a working current value of the motor and a working speed value of the motor when the range hood is in a running state.

[0075] In some embodiments, in order to timely adjust the opening and closing angle of the smoke guide plate of the range hood, the controller obtains the working current value of the motor and the working speed value of the motor when the range hood is in a running state, i.e., when the range hood is in a working state.

[0076] The working speed value of the motor is used to represent the pressure value of the flue where the range hood is located.

[0077] It can be understood that when the motor of the range hood is in a constant torque (the working current of the motor is in a stable state) working mode, the actual speed value of the motor (i.e., the working speed value of the motor) is different under different pressure values of the flue, and the relationship between the actual speed value of the motor and the pressure value of the flue can be that the greater the pressure value of the flue, the greater the actual speed value of the motor. Therefore, under the condition that the working current of the motor is stable, the working speed value of the motor can be used to reflect the pressure value of the flue where the range hood is located.

[0078] The pressure value of the flue where the range hood is located is related to the amount of oil smoke in the environment where the range hood is located. The pressure value of the flue where the range hood is located can be positively correlated with the amount of oil smoke in the environment where the range hood is located, i.e., the more the amount of oil smoke in the environment where the range hood is located, the greater the pressure value of the flue where the range hood is located.

[0079] S102, determining a target opening and closing angle of the smoke guide plate according to the working current value of the motor and the working speed value of the motor.

[0080] For example, as shown in the above Figure 6 , step S102 can be specifically implemented as the following steps:

[0081] S1021, determining a working gear of the motor according to the working current value of the motor.

[0082] It can be understood that the working current value of the motor is different under different working gears. The working current value of the motor and the working gear of the motor have a corresponding relationship, and the working gear of the motor and the working current value of the motor can have a positive correlation, that is, the higher the working gear of the motor, the greater the working current value of the motor.

[0083] In some embodiments, the corresponding relationship between the working current value of the motor and the working gear of the motor can be one working gear corresponding to one current value interval.

[0084] Therefore, after obtaining the working current value of the motor, the controller can determine the working gear of the motor according to the working current value of the motor and the corresponding relationship.

[0085] In some embodiments, the working gear of the motor includes a low-speed gear, a medium-speed gear, a high-speed gear, and a stir-fry gear.

[0086] For example, the corresponding relationship between the working current value of the motor and the working gear of the motor can be as shown in Table 1 below:

[0087] Table 1

[0088] Current value (A) Operating gear 0A-0.5A Low speed gear 0.6A-0.7A Medium speed gear 0.8A-0.9A High speed gear 1A-1.5A Stir-fry gear

[0089] As can be seen from Table 1 above, when the working current value of the motor is in the range of 0A-0.5A, it can be determined that the working gear of the motor is a low-speed gear; when the working current value of the motor is in the range of 0.6A-0.7A, it can be determined that the working gear of the motor is a medium-speed gear; when the working current value of the motor is in the range of 0.8A-0.9A, it can be determined that the working gear of the motor is a high-speed gear; and when the working current value of the motor is in the range of 1A-1.5A, it can be determined that the working gear of the motor is a stir-fry gear.

[0090] For example, assuming that the working current value of the motor is 0.6A, taking 0.6A as an index, and traversing Table 1 above, it can be determined that the working gear of the motor is a medium-speed gear.

[0091] It should be noted that the data shown in Table 1 is only exemplary, and the embodiments of the present application are not limited thereto.

[0092] S1022, determining a target opening and closing angle of the smoke guide plate according to the working gear of the motor, the working speed value of the motor, and a preset corresponding relationship.

[0093] In some embodiments, the preset correspondence is pre-stored in the memory of the range hood, and the preset correspondence is a correspondence among the working gear of the motor, the working speed value of the motor, and the opening and closing angle of the smoke deflector. After obtaining the working gear of the motor and the working speed value of the motor, the controller can determine the target opening and closing angle of the smoke deflector according to the working gear of the motor, the working speed value of the motor, and the pre-stored preset correspondence.

[0094] In some embodiments, the correspondence among the working gear of the motor, the working speed value of the motor, and the opening and closing angle of the smoke deflector can be as shown in Table 2 below. Wherein, the working speed value of the motor is represented by R.

[0095] Table 2

[0096]

[0097]

[0098] As can be seen from Table 2 above, when the working gear of the motor is in the low gear, when the working speed value of the motor is less than R11, the opening and closing angle of the smoke deflector should be set to 70°, when the working speed value of the motor is between R11 and R12, the opening and closing angle of the smoke deflector should be set to 100°, and when the working speed value of the motor is greater than R12, the opening and closing angle of the smoke deflector should be set to 140°. The description of the working gear of the motor in the medium gear, the high gear, and the stir-fry gear can refer to the description of the low gear of the motor, which will not be repeated here.

[0099] The eight speed values R11 to R42 are obtained by the staff of the range hood manufacturer through actual testing according to different range hood models (mainly different air duct structures).

[0100] For example, assuming that the working gear of the motor is in the low gear and the working speed value of the motor is R11, according to the preset correspondence (i.e. Table 2 above), the target opening and closing angle of the smoke deflector can be obtained as 100°.

[0101] S103, adjust the opening and closing angle of the smoke deflector to the target opening and closing angle.

[0102] It can be understood that the smoke deflector, as a physical device, cannot adjust its own opening and closing angle. As can be seen from the above description of the smoke deflector, Figure 2 the smoke deflector is in transmission connection with the driving device, so after the target opening and closing angle of the smoke deflector is determined, the controller can control the driving device to work so that the opening and closing angle of the smoke deflector reaches the target opening and closing angle.

[0103] For example, as shown in Figure 7 , step S103 can be specifically implemented as the following steps:

[0104] S1031. Control the drive device to work according to the target opening and closing angle of the smoke guide plate so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle.

[0105] From the above Figure 2 As can be seen from the description of the drive device, the drive device includes a stepper motor. Based on this, when the drive device is a stepper motor, such as... Figure 8 As shown, step S1031 can be specifically implemented as follows:

[0106] S10311. Based on the target opening and closing angle of the smoke guide plate and the current opening and closing angle of the smoke guide plate, control the stepper motor to work so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle.

[0107] Optionally, the stepper motor can be controlled to operate based on the target opening and closing angle of the smoke guide plate and the current opening and closing angle of the smoke guide plate, which may include the following situations.

[0108] Scenario 1: When the current opening angle of the smoke guide plate is below the target opening angle of the smoke guide plate.

[0109] Understandably, if the current opening angle of the smoke guide plate is below the target opening angle, it means that the current opening angle is too small and cannot effectively absorb a large area of ​​oil fumes. In this case, the controller can control the stepper motor to rotate one step in the first direction, so that the current opening angle of the smoke guide plate increases to the target opening angle.

[0110] Scenario 2: When the current opening angle of the smoke guide plate is above the target opening angle of the smoke guide plate.

[0111] Understandably, if the current opening angle of the smoke guide plate is above the target opening angle, it means that the current opening angle is too large and cannot accurately absorb the fumes in a small area. In this case, the controller can control the stepper motor to rotate a second number of steps in the second direction, so that the current opening angle of the smoke guide plate is reduced to the target opening angle.

[0112] The first step and the second step are determined by the controller based on the difference between the current opening angle and the target opening angle of the smoke guide plate.

[0113] In some embodiments, it is assumed that the stepper motor has 28 available steps, and each step corresponds to an opening / closing angle of 10°. That is, for every step the stepper motor rotates, the opening / closing angle of the range hood's smoke guide plate is adjusted by 10°.

[0114] For example, assuming that the current opening angle of the smoke guide plate is 70°, and the target opening angle of the smoke guide plate is 100°, the opening angle difference is 30°, the controller can control the stepper motor to rotate 3 steps in the first direction to increase the opening angle of the smoke guide plate from 70° to 100°.

[0115] For example, assuming that the current opening angle of the smoke guide plate is 140°, and the target opening angle of the smoke guide plate is 100°, the opening angle difference is 20°, the controller can control the stepper motor to rotate 2 steps in the second direction to reduce the opening angle of the smoke guide plate from 120° to 100°.

[0116] It should be noted that if the first direction is the clockwise direction, and the second direction is the counterclockwise direction. Alternatively, if the first direction is the counterclockwise direction, and the second direction is the clockwise direction. The embodiments of the present application do not limit this.

[0117] It can be understood that the controller controls the stepper motor to rotate a corresponding number of steps according to the opening angle difference, so that the opening angle of the smoke guide plate reaches the target opening angle, thereby achieving precise control of the opening angle of the smoke guide plate.

[0118] Based on Figure 5 The embodiments shown at least bring the following beneficial effects: the oil fume extractor provided by the embodiments adjusts the opening angle of the smoke guide plate intelligently according to the working current value and the working speed value of the motor, so that the oil fume extractor can effectively absorb the oil fume after adjusting the opening angle of the smoke guide plate, thereby improving the oil fume extraction effect of the oil fume extractor. It can be understood that the working speed value of the motor is used to represent the pressure value of the flue where the oil fume extractor is located, and the pressure value of the flue where the oil fume extractor is located is related to the amount of oil fume generated by the current environment where the oil fume extractor is located. The target opening angle of the smoke guide plate is determined according to the working current value and the working speed value of the motor, and then the opening angle of the smoke guide plate is adjusted from the current opening angle to the target opening angle, so that the adjusted opening angle of the smoke guide plate can match the pressure value of the flue where the oil fume extractor is located, that is, the adjusted opening angle of the smoke guide plate can match the amount of oil fume generated by the current environment where the oil fume extractor is located, thereby ensuring that the oil fume extractor has a good absorption effect on the oil fume, achieving the improvement of the oil fume extraction effect of the oil fume extractor, and improving the intelligent degree of the oil fume extractor, thereby providing a good user experience.

[0119] The control method of the oil fume extractor provided by the embodiments of the present application will be illustrated below in conjunction with the flowchart shown in Figure 9

[0120] After the oil fume extractor is in the running state:

[0121] ​(1) first, judge whether the working gear of the motor of the range hood is "low speed gear";

[0122] (2) if yes, match the corresponding opening and closing angle of the smoke guide plate according to the preset corresponding relationship, if no, go to (3);

[0123] (3) judge whether the working gear of the motor of the range hood is "medium speed gear";

[0124] (4) if yes, match the corresponding opening and closing angle of the smoke guide plate according to the preset corresponding relationship, if no, go to (5);

[0125] (5) judge whether the working gear of the motor of the range hood is "high speed gear";

[0126] (6) if yes, match the corresponding opening and closing angle of the smoke guide plate according to the preset corresponding relationship, if no, go to (7);

[0127] (7) judge whether the working gear of the motor of the range hood is "fry gear";

[0128] (8) if yes, match the corresponding opening and closing angle of the smoke guide plate according to the preset corresponding relationship, if no, go to (1).

[0129] It can be seen that the above mainly introduces the scheme provided by the embodiments of the present application from the perspective of method. In order to realize the above functions, the embodiments of the present application provide the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that the modules and algorithm steps of each example described in combination with the embodiments disclosed in the present text can be realized in the form of hardware or the combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical scheme. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0130] The embodiments of the present application can divide the function modules of the controller according to the above method examples, for example, each function module can be divided according to each function, or two or more functions can be integrated in one processing module. The above integrated module can be realized in the form of hardware or software function module. Optionally, the division of the modules in the embodiments of the present application is illustrative, and is only a logical function division, and another division method can be used in actual implementation.

[0131] The embodiments of the present application also provide a hardware structure diagram of a controller, as shown in Figure 10As shown, the controller 400 includes a processor 401, and optionally, a memory 402 and a communication interface 403 connected to the processor 401. The processor 401, the memory 402 and the communication interface 403 are connected through a bus 404.

[0132] The processor 401 can be a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processing (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD) or any combination thereof. The processor 401 can also be any other device with processing capabilities, such as a circuit, a device or a software module. The processor 401 can also include multiple CPUs, and the processor 401 can be a single-CPU processor or a multi-CPU processor. The processor herein can refer to one or more devices, circuits or processing cores for processing data (e.g., computer program instructions).

[0133] The memory 402 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, a magneto-optical disk storage, a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, and the present application is not limited thereto. The memory 402 can exist independently or be integrated with the processor 401. The memory 402 can contain computer program code. The processor 401 is configured to execute the computer program code stored in the memory 402, thereby implementing the control method provided by the embodiments of the present application.

[0134] The communication interface 403 can be used to communicate with other devices or communication networks (e.g., Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communication interface 403 can be a module, a circuit, a transceiver, or any device capable of enabling communication.

[0135] The bus 404 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 404 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 10 Only one thick line is used in the figure, but it does not mean that there is only one bus or only one type of bus.

[0136] The embodiment of the present application further provides a computer readable storage medium, comprising computer execution instructions, when the computer execution instructions are executed on a computer, the computer is caused to execute any one of the control methods of the range hood provided by the above-mentioned embodiments.

[0137] The embodiment of the present application further provides a computer program product comprising computer execution instructions, when the computer execution instructions are executed on a computer, the computer is caused to execute any one of the control methods of the range hood provided by the above-mentioned embodiments.

[0138] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer-executable instructions. When the computer-executable instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer-executable instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer-executable instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or include one or more data storage devices such as servers, data centers, etc. that can be integrated with the medium. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0139] Although the present application is described herein in conjunction with various embodiments, it is understood that other variations of the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from an inspection of the drawings, the disclosure, and the appended claims. The word "comprising" does not exclude other components or steps not listed in the claims, "a" or "an" does not exclude a plurality, and a single processor or other unit can fulfill the functions of several means recited in the claims. Means-plus-function or step-plus-function clauses are used where for procedural or logical operations, the recitation of means or steps in a claim is intended to encompass both implementations of the means or steps in addition to the corresponding structure or acts for performing the recited functions. The means-plus-function clauses are intended to cover both the structure and the functions of the means described.

[0140] Although the present application is described herein in conjunction with various embodiments, it is understood that other variations of the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from an inspection of the drawings, the disclosure, and the appended claims. The word "comprising" does not exclude other components or steps not listed in the claims, "a" or "an" does not exclude a plurality, and a single processor or other unit can fulfill the functions of several means recited in the claims. Means-plus-function or step-plus-function clauses are used where for procedural or logical operations, the recitation of means or steps in a claim is intended to encompass both implementations of the means or steps in addition to the corresponding structure or acts for performing the recited functions. The means-plus-function clauses are intended to cover both the structure and the functions of the means described.

[0141] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any change or replacement within the technical scope disclosed by the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A range hood characterized by, The method comprises: obtaining a working current value of the motor and a working speed value of the motor when the range hood is in a running state; the working speed value of the motor is used to represent a pressure value of a flue where the range hood is located; determining a working gear of the motor according to the working current value of the motor; determining a target opening and closing angle of the smoke guide plate according to the working gear of the motor, the working speed value of the motor and a preset corresponding relationship; the preset corresponding relationship is a corresponding relationship among the working gear of the motor, the working speed value of the motor and the opening and closing angle of the smoke guide plate; adjusting the opening and closing angle of the smoke guide plate to the target opening and closing angle. The range hood further comprises: a driving device which is in transmission connection with the smoke guide plate and is used to adjust the opening and closing angle of the smoke guide plate; when the controller adjusts the opening and closing angle of the smoke guide plate to the target opening and closing angle, the controller specifically performs the following steps: controlling the driving device to work according to the target opening and closing angle of the smoke guide plate, so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle.

2. The hood according to claim 1, characterized in that, The driving device comprises a stepping motor; when the driving device is a stepping motor, the controller specifically performs the following steps when controlling the driving device to work according to the target opening and closing angle of the smoke guide plate, so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle: controlling the stepping motor to work according to the target opening and closing angle of the smoke guide plate and a current opening and closing angle of the smoke guide plate, so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle.

4. The range hood according to claim 3, wherein 3. The hood according to claim 2, characterized in that, when the controller controls the stepping motor to work according to the target opening and closing angle of the smoke guide plate and the current opening and closing angle of the smoke guide plate, so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle, the controller specifically performs the following steps: if the current opening and closing angle of the smoke guide plate is below the target opening and closing angle of the smoke guide plate, controlling the stepping motor to rotate in a first direction by a first number of steps, so that the current opening and closing angle of the smoke guide plate increases to the target opening and closing angle; or if the current opening and closing angle of the smoke guide plate is above the target opening and closing angle of the smoke guide plate, controlling the stepping motor to rotate in a second direction by a second number of steps, so that the current opening and closing angle of the smoke guide plate decreases to the target opening and closing angle. The method comprises: obtaining a working current value of the motor and a working speed value of the motor when the range hood is in a running state; the working speed value of the motor is used to represent a pressure value of a flue where the range hood is located; determining a working gear of the motor according to the working current value of the motor; ​ 5. A control method of a range hood, characterized by, ​ ​ ​ According to the working gear of the motor, the working rotating speed value of the motor and a preset corresponding relationship, a target opening and closing angle of the smoke guide plate is determined; the preset corresponding relationship is a corresponding relationship among the working gear of the motor, the working rotating speed value of the motor and the opening and closing angle of the smoke guide plate; The opening and closing angle of the smoke guide plate is adjusted to the target opening and closing angle.

6. The method of claim 5, wherein, The adjustment of the opening and closing angle of the smoke guide plate to the target opening and closing angle comprises: According to the target opening and closing angle of the smoke guide plate, the driving device is controlled to work so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle.

7. The method of claim 6, wherein, The driving device comprises a stepping motor, and in the case that the driving device is a stepping motor, the control of the driving device to work according to the target opening and closing angle of the smoke guide plate so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle comprises: According to the target opening and closing angle of the smoke guide plate and the current opening and closing angle of the smoke guide plate, the stepping motor is controlled to work so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle.

8. The method of claim 7, wherein, The control of the stepping motor to work according to the target opening and closing angle of the smoke guide plate and the current opening and closing angle of the smoke guide plate so that the opening and closing angle of the smoke guide plate reaches the target opening and closing angle comprises: If the current opening and closing angle of the smoke guide plate is below the target opening and closing angle of the smoke guide plate, the stepping motor is controlled to rotate in a first direction by a first number of steps so that the current opening and closing angle of the smoke guide plate is increased to the target opening and closing angle; or If the current opening and closing angle of the smoke guide plate is above the target opening and closing angle of the smoke guide plate, the stepping motor is controlled to rotate in a second direction by a second number of steps so that the current opening and closing angle of the smoke guide plate is decreased to the target opening and closing angle.

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