Method and device for controlling a range hood, range hood

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a method for controlling an oil fume exhauster, which comprises the following steps: in the case that a cooking bench is in an open state, controlling a side suction part to extend a fan part; and controlling the distance between the side suction part and the cooking bench according to the height of a cooking utensil. In the application, the side suction part is provided with an air inlet, oil fume is generated from the cooking utensil, the air inlet is made to be closer to the upper position of the cooking utensil by controlling the distance between the side suction part and the cooking bench, that is, the air inlet is closer to the source of oil fume, the position of the air inlet is adjusted according to different cooking utensils, the adjustability of the oil fume exhauster is improved, and the smoke exhaust efficiency of the oil fume exhauster is optimized. The application further discloses a device for controlling an oil fume exhauster and the oil fume exhauster.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, such as a method and apparatus for controlling a range hood, and a range hood itself. Background Technology

[0002] Currently, range hoods are an essential kitchen appliance. By removing cooking fumes, users can enjoy cooking more comfortably. However, the required operating state of the range hood varies depending on the amount of fumes produced during cooking. Matching the amount of fumes produced with the operating state of the range hood can save energy and effectively remove fumes. Related technologies often use the adjustment of the range hood fan speed to put the range hood in different operating states to deal with different amounts of fumes.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] The inlet position of the range hood is not adjustable, resulting in poor adjustability and low smoke extraction efficiency. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a method and apparatus for controlling a range hood, and a range hood in general, to solve the problem that the position of the air inlet of the range hood is not adjustable, resulting in poor adjustability and low smoke extraction efficiency.

[0007] Technical issues.

[0008] In some embodiments, the method for controlling a range hood includes: controlling the side suction unit to extend out of the fan unit when the stove is on; and controlling the distance between the side suction unit and the stove according to the height of the cookware.

[0009] In some embodiments, the apparatus for controlling a range hood includes a processor and a memory storing program instructions, the processor being configured to execute the method for controlling a range hood described above when executing the program instructions.

[0010] In some embodiments, the range hood includes: a fan unit, a retractable side suction unit disposed within the fan unit, and a device for controlling the range hood according to any of the above embodiments.

[0011] The method and apparatus for controlling a range hood, and the range hood itself, provided in this disclosure, can achieve the following technical effects:

[0012] The distance between the side suction unit and the stove is controlled according to the height of the cookware. The side suction unit is equipped with an air inlet. Since the fumes are generated inside the cookware, by controlling the distance between the side suction unit and the stove, the air inlet is placed closer to the upper part of the cookware, that is, closer to the source of the fumes. The position of the air inlet is adjusted according to different cookware to improve the adjustability of the range hood and optimize the smoke extraction efficiency of the range hood.

[0013] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0014] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0015] Figure 1 This is a schematic diagram of the structure of a range hood provided in an embodiment of this disclosure;

[0016] Figure 2 This is a schematic diagram of the structure of the fan unit provided in an embodiment of this disclosure;

[0017] Figure 3 This is a schematic diagram of the structure of the fan provided in the embodiments of this disclosure;

[0018] Figure 4 This is a cross-sectional view of a range hood provided in an embodiment of this disclosure;

[0019] Figure 5 This is a cross-sectional view of another range hood provided in an embodiment of this disclosure;

[0020] Figure 6 This is a schematic diagram of the structure of the baffle provided in an embodiment of this disclosure;

[0021] Figure 7 This is a schematic diagram of a method for controlling a range hood provided in an embodiment of this disclosure;

[0022] Figure 8 This is a schematic diagram of a device for controlling a range hood provided in an embodiment of this disclosure;

[0023] Figure 9 This is a schematic diagram of another device for controlling a range hood provided in an embodiment of this disclosure.

[0024] 100. Processor; 101. Memory; 102. Communication Interface; 103. Bus; 200. Fan Unit; 201. Negative Pressure Chamber; 202. Fan; 203. Movable Port; 204. Baffle; 205. Guide Section; 206. Sliding Section; 207. Thrust Spring; 300. Side Suction Section; 301. Air Outlet; 302. Oil Collection Tank; 400. Drive Unit; 401. Gear Rack; 402. Motor; 501. Slide Rail; 502. Slide Groove; 600. First Control Module; 700. Second Control Module; 800. Detection Module; 801. Temperature Detection Unit. Detailed Implementation

[0025] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0026] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0027] Unless otherwise stated, the term "multiple" means two or more.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0029] Combination Figure 1-6 As shown, this disclosure provides a range hood, including: a fan unit 200, a side suction unit 300, and a drive device 400. The fan unit 200 includes a negative pressure chamber 201 and a fan 202 disposed within the negative pressure chamber 201; the side suction unit 300 is slidably connected to the negative pressure chamber 201 and is configured to extend or retract into the negative pressure chamber 201, and the side of the side suction unit 300 is provided with an air vent 301 extending through the side along its extension direction; the drive device 400 is disposed between the inner wall of the negative pressure chamber 201 and the side suction unit 300, and is configured to drive the side suction unit 300 to extend or retract into the negative pressure chamber 201.

[0030] The range hood provided in this embodiment has a retractable side suction part 300. The distance between the side suction part 300 and the stove is controllable. The side suction part 300 is provided with an air inlet. The more the side suction part 300 extends, the smaller the distance between it and the stove, and the more the air inlet is exposed, which can suck in more oil fumes, improve the adjustability of the range hood, and optimize the smoke exhaust efficiency of the range hood.

[0031] Optionally, the fan 202 is a centrifugal fan. Using a centrifugal fan increases the negative pressure within the negative pressure chamber 201, which helps improve the efficiency of fume extraction.

[0032] Optionally, the air inlet of the centrifugal fan faces the side suction section 300, and the air outlet passes through the upper side of the negative pressure chamber 201 and communicates with the outside of the negative pressure chamber 201. In this way, directing the air inlet of the centrifugal fan toward the side suction section 300 is beneficial for drawing the oil fumes in the side suction section 300 into the centrifugal fan, thereby improving the oil fume extraction efficiency.

[0033] Optionally, the side suction unit 300 is vertically arranged. In this way, the vertical arrangement of the side suction unit 300 facilitates its extension and retraction in the vertical direction, allowing the lower end of the side suction unit 300 to be closer to the stove for better absorption of oil fumes. Furthermore, when the side suction unit 300 is vertically arranged, it occupies less space.

[0034] Optionally, an oil collection groove 302 is provided on the lower side of the side suction part 300. This allows for the collection of oil stains flowing down from the side suction part 300.

[0035] Optionally, the side of the vent 301 is at an angle to the vertical plane. This angle, between the side of the vent 301 and the vertical plane, is more conducive to the collection of fumes, since the fumes are generated below the vent 301.

[0036] Optionally, the included angle is greater than or equal to 5 degrees and less than or equal to 15 degrees. In this way, the included angle is set between 5 degrees and 15 degrees, so that the angle of the air outlet 301 is kept within a reasonable range, which can better absorb the oil fumes and improve the oil fume absorption capacity.

[0037] Optionally, the included angle is 10 degrees. In this way, the included angle between the side where the air vent 301 is located and the vertical plane is 10 degrees, which can better absorb the oil fumes located on the lower side and improve the oil fume absorption capacity.

[0038] Optionally, the negative pressure chamber 201 is provided with a movable opening 203, and the side suction part 300 is configured to extend or retract into the negative pressure chamber 201 through the movable opening 203. In this way, when the side suction part 300 retracts into the negative pressure chamber 201 through the movable opening 203, the side suction part 300 can always be in communication with the inside of the negative pressure chamber 201, which facilitates the absorption of oil fumes by the side suction part 300.

[0039] Optionally, the movable opening 203 is located at the bottom of the negative pressure chamber 201. In this way, the side suction part 300 can extend and retract at the bottom of the negative pressure chamber 201, so that the side suction part 300 is closer to the stove, that is, closer to the position where the oil fumes are generated, thereby improving the absorption efficiency of the oil fumes.

[0040] Optionally, a seal is provided around the periphery of the movable port 203. This improves the sealing between the side suction part 300 and the negative pressure chamber 201.

[0041] Alternatively, the seal can be a rubber gasket. This method offers a simple structure, lower cost, and better sealing performance.

[0042] Optionally, a baffle 204 is provided on the side of the movable opening 203 that contacts the air vent 301. In this way, the airflow passing through the air vent 301 is guided upward by the baffle 204, thereby improving the oil fume absorption capacity of the air vent 301 and thus improving the oil fume absorption efficiency.

[0043] Optionally, the baffle 204 and the side where the air vent 301 is located are tilted at the same angle. In this way, the baffle 204 is used to guide the airflow along the tilt direction of the air vent 301, so that the fumes can be better introduced into the negative pressure chamber 201 through the air vent 301, thereby improving the fume extraction efficiency.

[0044] Optionally, the baffle 204 includes a guide portion 205 and a sliding portion 206. The sliding portion 206 is horizontally slidably connected to one side of the movable opening 203. In this way, the guide plate can slide horizontally. When the side suction part 300 slides upward, since the side where the air outlet 301 is located has an inclined angle, the baffle 204 slides to the left to close the movable opening 203, so that the airflow can pass through the air outlet 301 and be guided into the negative pressure chamber 201, thereby improving the oil fume extraction efficiency of the side suction part 300.

[0045] Optionally, the sliding connection includes a structure connected by a slide groove and a slide rail. This results in a simple structure, low cost, and effective implementation of the sliding connection.

[0046] Optionally, a thrust spring 207 is provided on the side of the baffle 204 facing away from the side suction part 300. In this way, the thrust spring 207 pushes the baffle 204 toward the side suction part 300, so that the baffle 204 is always in close contact with the side suction part 300, improving the sealing of the movable port 203 and thus improving the efficiency of oil fume extraction.

[0047] Optionally, the negative pressure chamber 201 and the side suction part 300 are connected by a slide rail assembly. In this way, the sliding between the side suction part 300 and the negative pressure chamber 201 is more stable by the slide rail assembly, which can improve the stability of the extension and retraction of the side suction part 300.

[0048] Optionally, the sliding assembly includes a slide rail 501 and a slide groove 502. The slide rail 501 is disposed on the inner wall of the negative pressure chamber 201, and the slide groove 502 is disposed on the side suction part 300. In this way, the structure of the slide rail 501 and the slide groove 502 makes the sliding between the side suction part 300 and the negative pressure chamber 201 more stable.

[0049] Optionally, the drive unit 400 includes: a rack and pinion 401 disposed on the side suction part 300; and a power unit including a motor 402 and a gear connected to the motor 402, the gear meshing with the rack and pinion 401. In this way, the side suction part 300 is driven to extend and retract through the meshing structure of the gear and rack and pinion 401, thereby improving the stability of the extension and retraction of the side suction part 300.

[0050] Combination Figure 7 As shown, this disclosure provides a method for controlling a range hood, including...

[0051] S01, when the stove is on, control the side suction unit to extend the fan unit;

[0052] S02, control the distance between the side suction unit and the stove according to the height of the cookware.

[0053] The method for controlling a range hood provided in this disclosure controls the distance between the side suction unit and the stovetop according to the height of the cookware. The side suction unit is provided with an air inlet. Since the fumes are generated inside the cookware, by controlling the distance between the side suction unit and the stovetop, the air inlet is made closer to the upper part of the cookware, that is, the air inlet is closer to the source of the fumes. The position of the air inlet is adjusted according to different cookware, thereby improving the adjustability of the range hood and optimizing the smoke extraction efficiency of the range hood.

[0054] Optionally, controlling the distance between the side suction unit and the stovetop based on the height of the cookware includes: determining the distance corresponding to the height of the cookware according to a preset correspondence; and adjusting the distance between the side suction unit and the stovetop based on the determined distance. This simplifies the adjustment method and makes the control more reliable by adjusting the distance between the side suction unit and the stovetop through a correspondence.

[0055] Optionally, the higher the cookware, the greater the distance between the side suction unit and the stove. This way, since most of the cooking fumes are generated inside the cookware, a higher cookware allows the side suction unit to be further from the stove, enabling better extraction of fumes from their source and improving fume extraction efficiency.

[0056] Optionally, the distance between the side suction unit and the stovetop is related to the height of the cookware as follows: L = H + a, where L is the distance between the side suction unit and the stovetop, H is the height of the cookware, and a is the distance compensation value. This ensures that when adjusting the height of the side suction unit, the distance between it and the stovetop is always greater than the height of the cookware, thus better absorbing the fumes generated inside the cookware.

[0057] Optionally, L, H, and a can all be in centimeters. This unifies the units and facilitates calculations.

[0058] Optionally, the distance compensation value 'a' is determined based on the oil fume concentration. This allows for adjusting the distance between the side suction unit and the stovetop according to the oil fume concentration, resulting in better absorption of oil fumes at different concentrations and improving the range hood's oil fume extraction efficiency.

[0059] Optionally, the higher the concentration of cooking fumes, the smaller the distance compensation value 'a'. Thus, a smaller distance compensation value 'a' means a smaller distance between the lower end of the side suction unit and the cookware, allowing for better absorption of the cooking fumes generated inside the cookware.

[0060] Optionally, the oil fume concentration can be divided into multiple levels, each level corresponding to a fixed distance compensation value 'a'. This way, determining the distance compensation value 'a' through a correspondence simplifies the process and reduces its difficulty.

[0061] Optionally, the fume concentration can be divided into five levels, with the first level corresponding to a value of 30. For each additional level, the value of a decreases by 5. Assigning a fixed value to a simplifies the process of determining the distance between the side-suction unit and the stove.

[0062] Optionally, when the fume concentration is below a threshold, the fume concentration is evenly divided into multiple levels, each level corresponding to a fixed distance compensation value 'a'. When the fume concentration is greater than or equal to the threshold, the distance compensation value 'a' corresponds to a fixed value. In this way, within a certain range of fume concentration, the distance between the side-suction unit and the stove can be adjusted according to the fume concentration level. When the fume concentration is too high, the distance between the side-suction unit and the stove is kept constant at a distance with optimal smoke extraction efficiency, allowing for better absorption of fumes even at high concentrations.

[0063] Optionally, the threshold is 40 mg / m³. When the oil fume concentration is greater than 40 mg / m³, the value of 'a' is 5. In this way, when the oil fume concentration is high, maintaining the distance between the side suction unit and the stovetop as the height of the cookware plus 5 will better absorb the oil fumes.

[0064] Alternatively, the height of the cookware can be determined by measuring the height difference between the top of the cookware and the stovetop. This method of determining the cookware height via distance measurement is more accurate and simpler.

[0065] Optionally, the method for controlling the range hood further includes controlling the rotation speed of the fan unit based on the distance between the side suction unit and the cooktop. This allows the fan unit's rotation speed to be adapted to the distance between the side suction unit and the cooktop, further improving the range hood's smoke extraction efficiency.

[0066] Optionally, the smaller the distance between the side-suction unit and the stovetop, the higher the rotation speed of the fan unit. This means that the smaller the distance, the larger the exposed air vents on the side-suction unit. Increasing the fan speed at this point expands the smoke extraction range while maintaining suction power, thus improving the effectiveness of fume extraction.

[0067] Optionally, the distance between the side suction unit and the stovetop, as well as the rotational speed of the fan unit, can be divided into multiple levels, with each level of the distance corresponding to a level of the fan unit's rotational speed. This correspondence allows for simpler and more stable control. For example, if the extension range of the side suction unit is 30 cm, the distance between the side suction unit and the stovetop can be divided into 10 cm, 20 cm, and 30 cm, and the fan unit's rotational speed can be divided into fast, medium, and slow speeds. Specifically, when the distance between the side suction unit and the stovetop is 10 cm, the fan unit's rotational speed is fast; when the distance is 20 cm, the fan unit's rotational speed is medium; and when the distance is 30 cm, the fan unit's rotational speed is slow.

[0068] Optionally, the method for controlling the range hood also includes: detecting the temperature of the stovetop; and determining the stovetop's operating status based on the temperature. This method of determining whether the stovetop is in operation based on its temperature is simple, convenient, and relatively accurate.

[0069] Optionally, the temperature of the stove can be detected within 5cm of the heating zone. This allows for a more stable assessment of the stove's operating status by sensing the temperature within 5cm of the heating zone.

[0070] Optionally, the heating zone of the stove is the location of the burner head.

[0071] Optionally, the working status of the stove can be determined based on temperature, including: determining that the stove is in the "on" state when the temperature exceeds a preset temperature. In this way, when the stove temperature exceeds the preset temperature, it indicates that the stove has started heating, making the determination of the stove being in the "on" state more accurate.

[0072] Optionally, the preset temperature is greater than or equal to 50 degrees Celsius. This ensures that the room temperature will generally not exceed 50 degrees Celsius. Setting the preset temperature to above 50 degrees Celsius avoids misjudgments caused by room temperature fluctuations.

[0073] Optionally, the method for controlling the range hood further includes: detecting the flow of gas and determining the working status of the stove based on the gas flow. For example, when the flow of gas to the stove is detected, the stove is determined to be in working condition. In this way, determining the stove's working condition based on the gas flow is more accurate, and it can be sensed as soon as the stove enters working condition, improving the response speed of the side suction unit extension control.

[0074] Optionally, the method for controlling the range hood further includes: when the stove is off, controlling the side suction unit to retract into the fan unit according to the concentration of cooking fumes. In this way, after the stove is no longer in use, the side suction unit retracts into the fan unit when the concentration of cooking fumes drops to a certain value, reducing the residue of cooking fumes in the kitchen.

[0075] Optionally, controlling the retraction of the side suction unit into the fan unit based on the oil fume concentration includes: when the oil fume concentration is lower than a preset value, controlling the side suction unit to retract into the fan unit. In this way, when the oil fume concentration decreases to the preset value and then the side suction unit is retracted into the fan unit, the oil fume concentration is maintained at a low level, reducing the residue of oil fumes in the kitchen.

[0076] Combination Figure 8 As shown, this embodiment of the present disclosure provides a device for controlling a range hood, including a first control module 600 and a second control module 700. The first control module 600 is configured to control the side suction unit to extend from the fan unit when the stove is on; the second control module 700 is configured to control the distance between the side suction unit and the stove according to the height of the cookware.

[0077] The device and method for controlling a range hood provided in this embodiment of the present disclosure control the distance between the side suction unit and the stove according to the height of the cookware. The side suction unit is provided with an air inlet. Since the fumes are generated inside the cookware, by controlling the distance between the side suction unit and the stove, the air inlet is made closer to the upper part of the cookware, that is, the air inlet is closer to the source of the fumes. The position of the air inlet is adjusted according to different cookware, thereby improving the adjustability of the range hood and optimizing the smoke exhaust efficiency of the range hood.

[0078] Optionally, the device for controlling the range hood further includes a detection module 800. The detection module 800 is configured to detect the working status of the cooktop and the height of the cookware.

[0079] Optionally, the detection module 800 includes a temperature detection unit 801. The temperature detection unit 801 is configured to detect the temperature of the stove and determine the working status of the stove based on the temperature. This method of determining whether the stove is in operation by measuring its temperature is simple, convenient, and relatively accurate.

[0080] Combination Figure 9As shown, this disclosure provides a device for controlling a range hood, including a processor 100 and a memory 101. Optionally, the device may further include a communication interface 102 and a bus 103. The processor 100, communication interface 102, and memory 101 can communicate with each other via the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call logical instructions in the memory 101 to execute the method for controlling the range hood described in the above embodiment.

[0081] Furthermore, the logic instructions in the aforementioned memory 101 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0082] The memory 101, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 100 executes functional applications and data processing by running the program instructions / modules stored in the memory 101, that is, it implements the method for controlling the range hood in the above embodiments.

[0083] The memory 101 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 101 may include high-speed random access memory and may also include non-volatile memory.

[0084] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling a range hood.

[0085] This disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the above-described method for controlling a range hood.

[0086] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0087] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0088] This disclosure provides a range hood that includes the aforementioned device for controlling the range hood.

[0089] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes the element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0090] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0091] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0092] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling a range hood, the range hood comprising a fan unit and a retractable side-suction unit disposed within the fan unit, the fan unit comprising a negative pressure chamber and a fan disposed within the negative pressure chamber, the side-suction unit being slidably connected to the negative pressure chamber and configured to extend or retract into the negative pressure chamber, and the side of the side-suction unit having an air vent extending through the side along its extension direction, the side of the side with the air vent forming an angle with a vertical plane, the negative pressure chamber having a movable opening, the side-suction unit being configured to extend or retract into the negative pressure chamber through the movable opening, a baffle being provided on the side of the movable opening that contacts the air vent, the baffle comprising a guide portion and a sliding portion, the sliding portion being horizontally slidably connected to one side of the movable opening, characterized in that... include: With the stove on, the side suction unit extends out of the fan unit; and, The distance between the side suction unit and the stovetop is controlled according to the height of the cookware; The distance between the side suction unit and the stovetop and the height of the cooking utensils satisfy the following relationship: L = H + a Where L is the distance between the side suction unit and the stove, H is the height of the cookware, and a is the distance compensation value; The distance compensation value 'a' is determined based on the concentration of cooking fumes.

2. The method according to claim 1, characterized in that, The method of controlling the distance between the side suction unit and the stove based on the height of the cookware includes: Determine the distance corresponding to the height of the cookware based on the preset correspondence; Adjust the distance between the side suction unit and the stove based on the determined distance.

3. The method according to claim 1, characterized in that, The higher the cookware, the greater the distance between the side suction part and the stove.

4. The method according to claim 1, characterized in that, The higher the concentration of cooking fumes, the smaller the distance compensation value 'a'.

5. The method according to claim 1, characterized in that, The speed of the fan is controlled according to the distance between the side suction unit and the stove.

6. The method according to claim 1, characterized in that, The height of the cookware is determined by measuring the height difference between the top of the cookware and the stove.

7. The method according to any one of claims 1 to 6, characterized in that, Also includes: Detect the temperature of the stove; The working status of the stove is determined based on the temperature.

8. The method according to any one of claims 1 to 6, characterized in that, Also includes: When the stove is off, the side suction unit is retracted into the fan unit according to the concentration of oil fumes.

9. A device for controlling a range hood, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to, when executing the program instructions, perform the method for controlling a range hood as described in any one of claims 1 to 8.

10. A range hood, characterized in that, It includes a fan unit, a retractable side suction unit disposed within the fan unit, and a device for controlling a range hood as described in claim 9.

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