Kitchen appliance, control method, device and computer readable storage medium

Abstract

The present application relates to the technical field of household appliances, and in particular to a kitchen appliance, a control method, a device and a computer readable storage medium. The kitchen appliance comprises a smoke machine main body and an air guide device. The lower end of the smoke machine main body is provided with an inlet and outlet. The air guide device comprises a main cavity and a sub-cavity. The main cavity can be switched between a first position stored in the smoke machine main body and a second position extended downwardly out of the inlet and outlet. The sub-cavity can be switched between a position extended leftward or rightward out of the main cavity and a position hiding the smoke inlet in the main cavity. The maximum dimension of the air guide device in the left-right direction is less than or equal to the width of the inlet and outlet. The kitchen appliance takes a short time from receiving a start instruction to starting to work on absorbing oil smoke. The kitchen appliance takes a short time from receiving a stop instruction to completely storing the air guide device, and the user does not need to wait for a long time. The control method, the device and the computer readable storage medium do not require the user to wait for a long time, and improve the user's experience of cooking.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more particularly to a kitchen appliance, control method, device, and computer-readable storage medium. Background Technology

[0002] A range hood, also known as a kitchen exhaust hood, is a kitchen appliance used to purify the kitchen environment. Installed above the gas stove, it can quickly remove the waste from the burner and the harmful fumes produced during cooking, expelling them outdoors, reducing pollution, and purifying the air.

[0003] Existing range hoods include a main body and an air guide device. The air guide device includes a main cavity and a sub-cavity. The main cavity is connected to the main body and can extend or retract vertically. The sub-cavity is connected to the main cavity and has a smoke inlet. The sub-cavity can extend to the left or right of the main cavity or retract into it. When both the main cavity and the sub-cavity are extended, the distance between the air inlet and the burner is relatively short, and the width of the air guide device in the left-right direction is relatively large, resulting in better smoke extraction. When both the main cavity and the sub-cavity are retracted, the air guide device and the air inlet are concealed, ensuring a clean kitchen environment and preventing odors from accumulating oil inside the range hood from spreading into the kitchen through the air inlet, thus avoiding unpleasant smells in the kitchen.

[0004] When a current range hood receives a power-on command, the main chamber first moves downwards relative to the main body (approximately 5 seconds). Then, the sub-chamber moves left or right relative to the main chamber to extend beyond it (approximately 5 seconds). Finally, the fan inside the range hood starts working to achieve the desired fume extraction effect. However, the current range hood takes a relatively long time (10 seconds) from receiving the power-on command to starting fume extraction, requiring users to wait excessively and failing to achieve rapid fume absorption, resulting in a poor cooking experience.

[0005] After receiving the shutdown command, the sub-cavity moves left or right relative to the main cavity to extend into the main cavity (approximately 5 seconds). Then, the sub-cavity moves upward relative to the main body of the range hood to its final position (approximately 5 seconds). Finally, the fan inside the range hood stops working. Existing range hoods have a relatively long time (10 seconds) from receiving the shutdown command to the complete retraction of the air guide device, requiring users to wait a considerable amount of time, resulting in a poor user experience.

[0006] Therefore, there is an urgent need to design a kitchen appliance, control method, device, and computer-readable storage medium to improve the above problems. Summary of the Invention

[0007] The first objective of this invention is to provide a kitchen appliance capable of simultaneously extending both the main cavity and the sub-cavities. The appliance operates quickly from receiving a power-on command to commencing fume extraction, eliminating the need for prolonged user waiting and improving the user experience. Similarly, the appliance operates quickly from receiving a power-off command to fully retracting the air guide mechanism, again minimizing user waiting time and enhancing the user experience.

[0008] To achieve the above objectives, the following technical solution is provided:

[0009] A kitchen appliance, comprising:

[0010] The main body of the range hood has an inlet and outlet at its lower end; and

[0011] The air guiding device includes a main cavity and a sub-cavity. The main cavity is connected to the main body of the range hood. The main cavity can switch between a first position where it is housed within the main body of the range hood and a second position where it extends downward from the inlet / outlet. The sub-cavity is connected to the main cavity and has a smoke inlet. The sub-cavity can switch between a position where it extends to the left or right from the main cavity and a position where the smoke inlet is hidden within the main cavity. The maximum dimension of the air guiding device in the left-right direction is less than or equal to the width of the inlet / outlet.

[0012] As a preferred embodiment, the sub-cavity includes:

[0013] A first sub-cavity, connected to the main cavity, has a first smoke inlet. The first sub-cavity can switch between a third position extending out from the right side of the main cavity and a fourth position retracted into the main cavity.

[0014] The second sub-cavity is connected to the main cavity. The second sub-cavity has a second air inlet. The second sub-cavity can switch between a fifth position extending out from the left side of the main cavity and a sixth position retracted into the main cavity.

[0015] As a preferred embodiment, the kitchen appliance further includes:

[0016] A first drive mechanism is configured to independently drive the first sub-cavity to switch between the third position and the fourth position; and

[0017] The second drive mechanism is configured to independently drive the second sub-cavity to switch between the fifth position and the sixth position.

[0018] As a preferred embodiment, the kitchen appliance further includes:

[0019] The third drive mechanism is configured to simultaneously drive the first sub-cavity and the second sub-cavity to move closer to or further away from each other in the left-right direction.

[0020] As a preferred embodiment, the main cavity, the first sub-cavity, and the second sub-cavity have the same dimensions in the left-right direction. When the first sub-cavity and the second sub-cavity are both housed in the main cavity, the first sub-cavity and the second sub-cavity are interlocked in the left-right direction or arranged in the front-back direction.

[0021] As a preferred embodiment, the air guide device can extend or retract independently in the vertical direction of the main body of the smoke hood.

[0022] As a preferred embodiment, the range hood body is installed inside a cabinet, the cabinet having an opening below the inlet and outlet. The kitchen appliance also includes a baffle plate, which is located at the lower end of the air guide device. When the air guide device retracts into the cabinet, the baffle plate seals the opening.

[0023] The second objective of this invention is to provide a control method that simultaneously extends the main cavity and the sub-cavities. This results in a shorter time from receiving the power-on command to starting the fume extraction process, eliminating the need for a long waiting period for the user and enabling rapid fume absorption, thus improving the user's cooking experience. Similarly, the time from receiving the power-off command to the complete retraction of the air guide mechanism is also short, further enhancing the user experience.

[0024] To achieve the above objectives, the following technical solution is provided:

[0025] A control method, characterized in that it is used to control the kitchen appliance described above, the control method comprising:

[0026] Power on / off command received;

[0027] The main cavity is controlled to move downward relative to the main body of the range hood, while the sub-cavity is controlled to extend out of the main cavity to the left or right; or the main cavity is controlled to move upward relative to the main body of the range hood, while the sub-cavity is controlled to extend into the main cavity to the left or right.

[0028] As a preferred embodiment, the step of controlling the main cavity to move downward relative to the main body of the smoke machine, while simultaneously controlling the sub-cavity to exit the main cavity to the left or right, includes:

[0029] When the main cavity is in the second position, the sub-cavity is in the position of extending out of the main cavity.

[0030] As a preferred embodiment, the step of controlling the main cavity to move upward relative to the main body of the smoke hood, while simultaneously controlling the sub-cavity to extend to the left or right into the main cavity, includes:

[0031] When the main cavity is in the first position, the sub-cavity is completely inside the main cavity.

[0032] As a preferred embodiment, the step of controlling the main cavity to move upward relative to the main body of the smoke hood, while simultaneously controlling the sub-cavity to extend to the left or right into the main cavity, includes:

[0033] When a shutdown command is received, the distance information between the bottom surface of the cabinet and the bottom surface of the air guide device is obtained, and the operation of the air guide device is controlled according to the distance information.

[0034] As a preferred embodiment, the step of controlling the operation of the air guiding device based on the distance information includes:

[0035] When the distance information is within a first preset range, control the main cavity to move towards the first position at a first speed;

[0036] When the distance information is within a second preset range, the main cavity is controlled to move to the first position at a second speed; wherein the value within the first preset range is greater than the value within the second preset range, and the first speed is greater than the second speed.

[0037] As a preferred embodiment, the step of controlling the operation of the air guiding device based on the distance information includes:

[0038] When the distance information is within a first preset range, control the sub-cavity to move towards the fourth position at a third speed;

[0039] When the distance information is within a second preset range, the main cavity is controlled to move into the main cavity at a fourth speed; wherein the value within the first preset range is greater than the value within the second preset range, and the third speed is greater than the fourth speed.

[0040] As a preferred embodiment, the kitchen appliance further includes a fourth drive mechanism, which is configured to drive the air guide device to move vertically relative to the range hood body; the step of controlling the main cavity to move downward relative to the range hood body includes:

[0041] Obtain the distance information between the bottom surface of the cabinet and the bottom surface of the air guide device, as well as the first rate of change of the distance information;

[0042] Based on the first rate of change, determine whether the fourth drive mechanism is malfunctioning; and

[0043] When the fourth drive mechanism malfunctions, the air guide device stops operating.

[0044] As a preferred embodiment, the step of determining whether the fourth drive mechanism is malfunctioning based on the first rate of change includes:

[0045] When the first change speed is less than the first preset speed, it is determined that the fourth drive mechanism is malfunctioning.

[0046] As a preferred embodiment, the kitchen appliance further includes a first drive mechanism configured to drive the sub-cavity to move left or right relative to the main cavity; the step of simultaneously controlling the sub-cavity to extend left or right out of the main cavity includes:

[0047] Acquire the distance information between the outer end face of the main cavity along the left-right direction and the outer end face of the sub-cavity along the left-right direction, as well as the second rate of change of the distance information;

[0048] Determine whether the first drive mechanism is malfunctioning based on the second rate of change; and

[0049] When the first drive mechanism malfunctions, the sub-cavity operation is stopped.

[0050] As a preferred embodiment, the step of determining whether the first driving mechanism is malfunctioning based on the second rate of change includes:

[0051] When the second rate of change is less than the second preset rate, it is determined that the first drive mechanism is malfunctioning.

[0052] The third objective of this invention is to provide a device capable of simultaneously extending both the main cavity and the sub-cavity. This results in a shorter time from receiving the power-on command to commencing fume extraction, eliminating the need for prolonged waiting by the user and enabling rapid fume absorption, thus improving the user's cooking experience. Similarly, the device also minimizes the time from receiving the power-off command to the complete retraction of the air guide mechanism, further enhancing the user experience.

[0053] To achieve the above objectives, the following technical solution is provided:

[0054] A device includes:

[0055] One or more processors;

[0056] Storage device for storing one or more programs;

[0057] When the one or more programs are executed by the one or more processors, the one or more processors implement the control method described above.

[0058] The fourth objective of this invention is to provide a computer-readable storage medium capable of simultaneously extending both the main cavity and the sub-cavity. This results in a shorter timeframe from receiving the power-on command to commencing fume extraction, eliminating the need for prolonged user waiting and enabling rapid fume absorption, thus improving the user's cooking experience. Similarly, the time from receiving the power-off command to the complete retraction of the air guide mechanism is also short, further enhancing the user experience.

[0059] To achieve the above objectives, the following technical solution is provided:

[0060] A computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the control method described above.

[0061] The beneficial effects of this invention are:

[0062] The kitchen appliance provided by this invention includes a range hood body and a ventilation guide device. The lower end of the range hood body has an inlet and outlet. The ventilation guide device includes a main cavity and a sub-cavity. The main cavity is connected to the range hood body and can switch between a first position retracted within the range hood body and a second position extending downwards from the inlet and outlet. The sub-cavity is connected to the main cavity and has a smoke inlet. The sub-cavity can switch between a position extending left or right from the main cavity and a position where the smoke inlet is hidden within the main cavity. The maximum dimension of the ventilation guide device in the left-right direction is less than or equal to the width of the inlet and outlet. It can simultaneously extend both the main cavity and the sub-cavity, resulting in a shorter time from receiving the power-on command to starting to absorb fumes, eliminating the need for a long waiting period for the user and improving the cooking experience. It can also simultaneously retract both the main cavity and the sub-cavity, resulting in a shorter time from receiving the power-off command to the ventilation guide device being fully retracted, again eliminating the need for a long waiting period for the user and improving the user experience.

[0063] The control method provided by this invention can simultaneously extend the main cavity and the sub-cavity. The kitchen appliance operates quickly from receiving the power-on command to starting its fume extraction, eliminating the need for a long wait for the user and improving the cooking experience. It can also simultaneously retract the main cavity and the sub-cavity. The kitchen appliance operates quickly from receiving the power-off command to the complete retraction of the air guide mechanism, again eliminating the need for a long wait and improving the user experience.

[0064] The device provided by this invention can simultaneously extend both the main cavity and the sub-cavity. The kitchen appliance operates quickly from receiving the power-on command to starting its fume extraction process, eliminating the need for a long wait for the user and improving the cooking experience. It can also simultaneously retract both the main cavity and the sub-cavity. The kitchen appliance operates quickly from receiving the power-off command to the complete retraction of the air guide mechanism, again eliminating the need for a long wait and improving the user experience.

[0065] The computer-readable storage medium provided by this invention can simultaneously extend both the main cavity and the sub-cavity. The kitchen appliance operates quickly from receiving the power-on command to starting its fume extraction process, eliminating the need for a long wait for the user and improving the cooking experience. It can also simultaneously retract both the main cavity and the sub-cavity. The kitchen appliance operates quickly from receiving the power-off command to the complete retraction of the air guide mechanism, again eliminating the need for a long wait and improving the user experience. Attached Figure Description

[0066] Figure 1 A schematic diagram of the structure of the kitchen appliance provided in the embodiment of the present invention. Figure 1 ;

[0067] Figure 2 A schematic diagram of the structure of the kitchen appliance provided in the embodiment of the present invention. Figure 2 ;

[0068] Figure 3 A schematic diagram of the structure of the kitchen appliance provided in the embodiment of the present invention. Figure 3 ;

[0069] Figure 4 A partial sectional view of a kitchen appliance provided in an embodiment of the present invention;

[0070] Figure 5 A schematic diagram of the structure of the first driving device provided in an embodiment of the present invention. Figure 1 ;

[0071] Figure 6 for Figure 4 A magnified view of a section at point A in the middle;

[0072] Figure 7 A schematic diagram of the structure of the first driving mechanism provided in an embodiment of the present invention. Figure 1 ;

[0073] Figure 8 for Figure 7 Sectional view at point BB;

[0074] Figure 9 A schematic diagram of the structure of the first driving mechanism provided in an embodiment of the present invention. Figure 2 ;

[0075] Figure 10 for Figure 9 Sectional view at CC;

[0076] Figure 11 This is a schematic diagram of the structure of the kitchen appliance provided in Embodiment 2 of the present invention. Figure 1 ;

[0077] Figure 12 This is a schematic diagram of the structure of the kitchen appliance provided in Embodiment 2 of the present invention. Figure 2 ;

[0078] Figure 13 This is a schematic diagram of the structure of the kitchen appliance provided in Embodiment 3 of the present invention;

[0079] Figure 14 This is a schematic diagram of the structure of the kitchen appliance provided in Embodiment 4 of the present invention;

[0080] Figure 15 This is a schematic diagram of the structure of the kitchen appliance provided in Embodiment 5 of the present invention;

[0081] Figure 16 Flowchart of the control method provided in Embodiment Six of the present invention Figure 1 ;

[0082] Figure 17 Flowchart of the control method provided in Embodiment Six of the present invention Figure 2 ;

[0083] Figure 18 Flowchart of the control method provided in Embodiment Six of the present invention Figure 3 ;

[0084] Figure 19 Flowchart of the control method provided in Embodiment 7 of the present invention Figure 1 ;

[0085] Figure 20 Flowchart of the control method provided in Embodiment 7 of the present invention Figure 2 ;

[0086] Figure 21 Flowchart of the control method provided in Embodiment 7 of the present invention Figure 3 ;

[0087] Figure 22 Flowchart of the control method provided in Embodiment 7 of the present invention Figure 4 ;

[0088] Figure 23 This is a schematic diagram of the device provided in an embodiment of the present invention.

[0089] In the picture:

[0090] 120 - Device; 140 - External Device; 160 - Processing Unit; 180 - System Memory; 200 - Network Adapter; 220 - I / O Interface; 240 - Display; 280 - Bus; 300 - RAM; 320 - Cache Memory; 340 - Storage System; 400 - Programs / Utilities; 420 - Program Modules;

[0091] 10. Main body of the range hood; 11. Inlet and outlet; 20. Air guide device; 21. Main cavity; 211. Inner cavity of the main cavity; 2111. Inlet of the main cavity; 2112. Third air inlet; 22. First sub-cavity; 221. First smoke inlet cavity; 2211. First air inlet; 2212. Air outlet; 2213. First air outlet; 23. First drive mechanism; 231. Outer shell; 2311. Guide groove; 232. First lead screw; 233. First nut; 2331. Guide block; 234. Drive assembly; 235. Connecting rod; 236. Reversing mechanism; 2361. Second turbine; 2362. Second worm gear; 24. First pass Filter screen; 25. Second sub-cavity; 251. Second smoke inlet cavity; 2511. Second air inlet; 2512. Second air outlet; 252. Second clearance opening; 26. Second drive mechanism; 27. Third drive mechanism; 271. Gear; 272. First rack; 273. Second rack; 30. Fourth drive mechanism; 31. Housing; 311. Guide groove; 32. Second lead screw; 33. Second nut; 331. Guide protrusion; 34. Drive device; 341. Motor; 342. Reversing assembly; 3421. Turbine; 3422. Worm gear; 35. Guide mechanism; 351. Guide rail; 352. Slider; 40. Oil cup. Detailed Implementation

[0092] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings, not all of them.

[0093] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0094] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0095] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0096] Example 1

[0097] like Figure 1 As shown, this embodiment provides a kitchen appliance, which can be a range hood, etc. This embodiment uses a range hood as an example for explanation. The range hood includes a main body 10 and a guide device 20 connected from top to bottom. The guide device 20 has an air inlet. The main body 10 is used to create a negative pressure so that external fumes are purified after passing through the air inlet, the guide device 20 and the main body 10 in sequence. The purified gas is then discharged into the external environment.

[0098] To achieve sufficient absorption of cooking fumes, the existing range hood's air guide device 20 is positioned close to the stovetop in the vertical direction. When the range hood is not running, the air guide device 20 occupies a significant amount of space above the stovetop, making it inconvenient for users to clean the stovetop. At the same time, a large amount of grease accumulates at the air inlet, and the air inlet and the grease on it are exposed to the outside, resulting in an unclean kitchen environment.

[0099] To solve the above problems, such as Figure 1 and Figure 2 As shown, the range hood also includes a fourth drive mechanism 30, which is used to drive the air guide device 20 to extend or retract the range hood body 10 in the vertical direction. When the range hood is not running, the fourth drive mechanism 30 drives the air guide device 20 to retract the range hood body 10, thereby freeing up the space above the stove and making it easier for users to clean the stove. In addition, the air inlet and the oil accumulated on it are hidden in the range hood body 10, which can ensure the cleanliness of the kitchen environment.

[0100] like Figure 1 The range hood also includes an oil cup 40, which is located below the air guide device 20. Oil droplets separated by the air guide device 20 are collected in the oil cup 40 for easy collection. Furthermore, the oil cup 40 is detachably connected to the air guide device 20, allowing users to easily remove the oil cup 40 for cleaning. Specifically, the oil cup 40 and the air guide device 20 can be easily and quickly assembled and disassembled using snap-fit ​​structures, hook structures, magnetic structures, etc.

[0101] The existing range hood includes a main body 10 and an air guide device 20. The air guide device 20 includes a main cavity 21 and a first sub-cavity 22. The main cavity 21 is connected to the main body 10 and can extend or retract into the main body 10 in the vertical direction. The first sub-cavity 22 is connected to the main cavity 21 and has a first air inlet 2211 with a first smoke inlet cavity 221. The first sub-cavity 22 can extend to the left or right of the main cavity 21 or retract into the main cavity 21. When the main cavity 21 and the first sub-cavity 22 are in the extended state, the first air inlet 2211 is closer to the burner and the width of the air guide device 20 in the horizontal direction is larger, which can expand the smoke extraction range, so the range hood has a better smoke extraction effect. When both the main cavity 21 and the first sub-cavity 22 are in the retracted state, the air guide device 20 and the first air inlet 2211 can be hidden, ensuring the cleanliness of the kitchen environment and preventing the odor of oil accumulated inside the range hood from spreading to the kitchen through the first air inlet 2211, thus avoiding the generation of odors in the kitchen.

[0102] When a current range hood receives a power-on command, the main chamber 21 first moves downward relative to the main body 10 to its designated position (approximately 5 seconds). Then, the first sub-chamber 22 moves to the left or right relative to the main chamber 21, extending beyond the main chamber 21 (approximately 5 seconds). Finally, the fan inside the range hood starts working to achieve the desired fume extraction effect. However, the current range hood takes a long time from receiving the power-on command to starting fume extraction, requiring users to wait excessively and failing to achieve rapid fume absorption, resulting in a poor cooking experience.

[0103] After receiving the shutdown command, the sub-cavity moves left or right relative to the main cavity 21 to extend into the main cavity 21 (approximately 5 seconds). Then, the sub-cavity moves upward relative to the main body 10 of the range hood to its final position (approximately 5 seconds). Finally, the fan inside the range hood stops working. Existing range hoods have a relatively long time (10 seconds) from receiving the shutdown command to the complete retraction of the air guide device 20, requiring users to wait a considerable amount of time, resulting in a poor user experience.

[0104] To solve the above problems, such as Figure 1As shown, the lower end of the range hood body 10 has an inlet / outlet 11. The maximum dimension of the air guide device 20 in the left-right direction is less than or equal to the width of the inlet / outlet 11. When the range hood is turned on, the main cavity 21 and the first sub-cavity 22 can extend simultaneously. The range hood takes a short time from receiving the turn-on command to starting to absorb fumes, eliminating the need for users to wait for a long time and achieving rapid absorption of fumes, thus improving the user's cooking experience. When the range hood is turned off, the main cavity 21 and the first sub-cavity 22 can retract simultaneously. The range hood takes a short time from receiving the turn-off command to being completely turned off, eliminating the need for users to wait for a long time and improving the user's experience of using the range hood.

[0105] like Figure 1 As shown, the range hood includes two air guide devices 20 arranged horizontally. When the air guide devices 20 extend out of the main body 10 of the range hood, the first air inlet 2211 of each air guide device 20 corresponds to the corresponding cooktop. Each first air inlet 2211 can achieve full alignment with the corresponding cooktop, and each first air inlet 2211 can fully exhaust the oil fumes generated by the corresponding cooktop. The oil fumes pass through the first air inlet 2211, the first smoke inlet cavity 221, and the main body 10 of the range hood in sequence, forming clean gas that is then discharged to the outside, achieving a good oil fume extraction effect. In addition, the air guide device 20 corresponding to the cooktop can be selected to operate, and the remaining air guide devices 20 can be stored in the cabinet, reducing the interference of the air guide devices 20 with the user's cooking operations.

[0106] Of course, in other embodiments, the number of air guide devices 20 can be set to three, four or more, and the number of air guide devices 20 corresponds to the number of stoves on the stove.

[0107] like Figure 1 As shown in the figure, the first air inlet 2211 is located on the windward side of the first sub-cavity 22, which enables the first sub-cavity 22 to effectively absorb oil fumes.

[0108] As a preferred option, such as Figure 2 As shown, the inner cavity 211 of the main cavity has a main cavity inlet 2111, which is located on the air intake side of the main cavity 21. When the range hood is working, the first air inlet 2211 and the main cavity inlet 2111 together form an air inlet. This type of air inlet has a larger air intake area than the single first air inlet 2211, which can achieve a better oil fume extraction effect.

[0109] As a preferred option, such as Figure 2As shown, the first smoke inlet chamber 221 has an air outlet 2212 that communicates with the inner cavity 211 of the main chamber. A first filter screen 24 is provided at the air outlet 2212 to improve the separation effect of oil fumes. In other embodiments, a second filter screen can also be provided at the first air inlet 2211 or the main chamber inlet 2111, which can also achieve the effect of separating oil fumes.

[0110] As a preferred embodiment, the first filter screen 24 and the second filter screen are detachably connected to the first sub-cavity 22, facilitating quick assembly and disassembly of the first filter screen 24 and the second filter screen, and making it convenient for the user to clean the first filter screen 24 and the second filter screen. Specifically, the first filter screen 24 and the second filter screen in this embodiment can be a grid-shaped filter screen or a mesh filter screen.

[0111] Combination Figures 3-6 The structure of the fourth drive mechanism 30 will be described, such as... Figures 3-6 As shown, the fourth drive mechanism 30 includes a housing 31, a second lead screw 32, a second nut 33, a drive device 34, and a guide mechanism 35. The housing 31 is connected to the main body 10 of the range hood. The second nut 33 is sleeved on the second lead screw 32. The second lead screw 32 is pivotally connected to the main body 10 of the range hood and extends in the vertical direction. The second nut 33 is connected to the air guide device 20. The drive device 34 can drive the second lead screw 32 to rotate relative to the main body 10 of the range hood. The guide mechanism 35 is disposed between the air guide device 20 and the main body 10 of the range hood. The guide mechanism 35 is used to make the air guide device 20 move in the vertical direction relative to the main body 10 of the range hood.

[0112] When the drive device 34 is working, it causes the second lead screw 32 to rotate relative to the main body 10 of the range hood. Simultaneously, the air guide device 20 is guided and restricted by the guide mechanism 35, and the second nut 33 moves vertically relative to the second lead screw 32. The second nut 33 drives the air guide device 20 to move vertically relative to the main body 10 of the range hood, thereby allowing the air guide device 20 to extend or retract from the main body 10 of the range hood. Through the cooperation of the second lead screw 32 and the second nut 33, precise adjustment of the relative position of the air guide device 20 and the main body 10 of the range hood can be achieved.

[0113] like Figure 6 As shown, the second nut 33 includes a guide protrusion 331, and a guide groove 311 extending in the vertical direction is provided on the housing 31. The guide protrusion 331 slides along the guide groove 311, thereby preventing the second nut 33 from rotating relative to the second lead screw 32, so that the second nut 33 can move in the vertical direction along the second lead screw 32.

[0114] As a preferred option, such as Figure 3Therefore, the guide mechanism 35 is configured as two sets, which are arranged at intervals in the left-right direction to achieve a stable guiding effect on the air guide device 20. In other embodiments, the guide mechanism 35 can also be three, four or more sets, which can achieve more stable movement of the air guide device 20.

[0115] As a preferred option, such as Figure 3 and Figure 4 As shown, the guiding mechanism 35 includes a guide rail 351 and a slider 352. The guide rail 351 extends in the vertical direction and is disposed on the main body 10 of the smoke machine. The slider 352 is disposed on the air guiding device 20. The slider 352 can slide along the guide rail 351. The slider 352 cooperates with the guide rail 351 to achieve a better guiding effect on the air guiding device 20.

[0116] As a preferred option, such as Figure 5 As shown, the drive device 34 includes a motor 341 and a commutation assembly 342. The motor 341 includes an output shaft extending in the left-right direction. The commutation assembly 342 includes a meshing worm gear 3421 and a worm 3422. The worm 3422 is coaxially fixed to the output shaft, and the worm gear 3421 is coaxially fixed to the second lead screw 32, thereby preventing the fourth drive mechanism 30 from being too long in the up-down direction.

[0117] like Figure 3 , Figures 7-10 As shown, the air guide device 20 also includes a first drive mechanism 23, which can drive the first sub-cavity 22 to move left or right relative to the main body 10 of the range hood. Figure 3 , Figures 7-10 The structure of the first drive mechanism 23 will be described as follows: Figure 7 and Figure 8 As shown, the first drive mechanism 23 includes a housing 231, a first lead screw 232, a first nut 233, a drive assembly 234, and a connecting rod 235. The housing 231 is mounted on the main cavity 21. The first lead screw 232 is pivotally connected to the housing 231 and extends in the left-right direction. The first nut 233 is sleeved on the first lead screw 232 and fixed to the first sub-cavity 22. The first nut 233 includes a guide block 2331. A guide groove 2311 extending in the left-right direction is provided on the housing 231. The guide block 2331 is inserted into the guide groove 2311 and can slide along the guide groove 2311. The drive assembly 234 can drive the first lead screw 232 to rotate. One end of the connecting rod 235 is fixed to the first nut 233, and the other end of the connecting rod 235 is fixed to the first sub-cavity 22. Figure 3 As shown, in this embodiment, the first drive mechanism 23 is disposed below the first filter screen 24 to avoid the first drive mechanism 23 blocking the first filter screen 24.

[0118] When the drive assembly 234 is working, it drives the first nut 233 to rotate. Simultaneously, with the cooperation of the guide block 2331 and the guide groove 2311, the first nut 233 can move relative to the first lead screw 232 in the left-right direction. The first nut 233 can drive the first sub-cavity 22 to reciprocate relative to the main cavity 21 in the left-right direction, thereby enabling the first sub-cavity 22 to extend into or retract from the main cavity 21. Through the cooperation of the first lead screw 232 and the first nut 233, precise adjustment of the relative position between the main cavity 21 and the first sub-cavity 22 can be achieved.

[0119] like Figure 10 As shown, the first drive mechanism 23 also includes a reversing mechanism 236. The reversing mechanism 236 includes a meshing second turbine 2361 and a second worm gear 2362. The second turbine 2361 is coaxially fixed with the first lead screw 232, and the second worm gear 2362 is coaxially fixed with the output shaft of the drive assembly 234. The first lead screw 232 is perpendicular to the output shaft of the drive assembly 234. This can prevent the first drive mechanism 23 from being too long in the left and right directions, and make reasonable use of the limited space to arrange the first drive mechanism 23 in the limited space.

[0120] The range hood body 10 is used to install inside the cabinet. The cabinet has an opening located below the inlet / outlet 11. The kitchen appliance also includes a cover plate, which is located at the lower end of the air guide device 20. When the air guide device 20 is retracted into the cabinet, the cover plate will block the opening. The cover plate can cover the inside of the cabinet and ensure the overall aesthetics of the kitchen.

[0121] Example 2

[0122] like Figure 11 and Figure 12As shown, the sub-cavities in this embodiment include a first sub-cavity 22 and a second sub-cavity 25. The first sub-cavity 22 is connected to the main cavity 21 and can switch between a third position extending out of the left side of the main cavity 21 and a fourth position housed within the main cavity 21. The second sub-cavity 25 is connected to the main cavity 21. The first sub-cavity 22 has a first smoke inlet cavity 221 with a first air inlet 2211. The second sub-cavity 25 has a second smoke inlet cavity 251 with a second air inlet 2511 and can switch between a fifth position extending out of the right side of the main cavity 21 and a sixth position housed within the main cavity 21. When the range hood is in operation, the first sub-cavity 22 is in the third position, and the second sub-cavity 25 is in the fifth position. The first and second sub-cavities 22 and 25 are positioned on the left and right sides of the main cavity 21, respectively. The first sub-cavity 22 is positioned directly opposite the cooktop on the left, effectively absorbing the fumes generated by that cooktop. The second sub-cavity 25 is positioned directly opposite the cooktop on the right, effectively absorbing the fumes generated by that cooktop. Therefore, the range hood in this embodiment can effectively absorb fumes from both cooktops. Furthermore, because the first and second sub-cavities 22 and 25 extend from both sides of the main cavity 21, the overall width of the range hood in operation is relatively large, enabling better absorption of fumes.

[0123] Of course, in other embodiments, the sub-cavity may also include a third sub-cavity, which can extend downward relative to the main cavity 21. The third sub-cavity is provided with an auxiliary smoke inlet, which is closer to the location of the oil fumes, thus achieving a further enhanced absorption effect on the oil fumes.

[0124] like Figure 12 As shown, the range hood also includes a first drive mechanism 23 and a second drive mechanism 26. The first drive mechanism 23 is used to independently drive the first sub-cavity 22 to switch between the third and fourth positions, and the second drive mechanism 26 is used to independently drive the second sub-cavity 25 to switch between the fifth and sixth positions. When only one side of the cooktop is working, only the first drive mechanism 23 or the second drive mechanism 26 on the corresponding side of the cooktop needs to control the corresponding smoke inlet cavity so that the corresponding smoke inlet cavity extends out of the main cavity 21, while the smoke inlet cavity on the other side remains in the main cavity 21. While absorbing fumes from the cooktop on the corresponding side, the range hood also avoids obstructing or interfering with the user's view, providing the user with a good field of vision and ample operating space, thus improving the user's cooking experience. Figure 12 As shown, in this embodiment, the first drive mechanism 23 is disposed above the first filter screen 24 to avoid the first drive mechanism 23 blocking the first filter screen 24.

[0125] like Figure 12 In this embodiment, the first air inlet 2211 is located on the windward side of the first sub-cavity 22, and / or the second air inlet 2511 is located on the windward side of the second sub-cavity 25. The first air inlet 2211 and the second air inlet 2511 have relatively large areas, which can achieve a better smoke intake effect in the first sub-cavity 22 and the second sub-cavity 25, ensuring the large-volume guiding effect of the air guide device 20 on the oil fumes and ensuring a better oil fume extraction effect of the range hood. Specifically, the cross-sectional area of ​​the first air inlet 2211 is 1 / 2 to 4 / 5 of the area of ​​the windward side of the first sub-cavity 22, and the cross-sectional area of ​​the second air inlet 2511 is 1 / 2 to 4 / 5 of the area of ​​the windward side of the second sub-cavity 25.

[0126] like Figure 12 As shown, the main cavity 21 of this embodiment has a third air inlet 2112 on the windward side. When the range hood is working, the first air inlet 2211, the second air inlet 2511 and the third air inlet 2112 together form an air inlet. This type of air inlet has a larger air intake area than the single first air inlet 2211 and the second air inlet 2511, and can achieve a better oil fume extraction effect.

[0127] As a preferred option, such as Figure 11 and Figure 12 As shown, the first sub-cavity 22 has a first air outlet 2213, which is connected to the first smoke inlet cavity 221. The second sub-cavity 25 has a second air outlet 2512, which is connected to the second smoke inlet cavity 251. A first filter screen 24 is provided at the first air outlet 2213 and the second air outlet 2512. The first filter screen 24 can improve the separation effect of oil fumes.

[0128] In other embodiments, a third filter screen can also be provided at the first air inlet 2211, the second air inlet 2511, or the third air inlet 2112, which can also achieve the effect of separating oil fumes. As a preferred embodiment, the first filter screen 24 and the third filter screen are detachably connected to the corresponding first sub-cavity 22 and the second sub-cavity 25, respectively, which facilitates quick assembly and disassembly of the first filter screen 24 and the third filter screen, and makes it convenient for users to clean the first filter screen 24 and the third filter screen. Specifically, the first filter screen 24 and the third filter screen in this embodiment can be a grid-shaped filter screen or a mesh filter screen.

[0129] Example 3

[0130] like Figure 13As shown, the structure of the range hood provided in this embodiment is basically the same as that of the range hood in Embodiment 2. The main difference is that the dimensions of the main cavity 21, the first sub-cavity 22, and the second sub-cavity 25 are the same in the left-right direction. When the first sub-cavity 22 and the second sub-cavity 25 are both housed in the main cavity 21, the first sub-cavity 22 and the second sub-cavity 25 are arranged in the front-back direction. While ensuring that the first sub-cavity 22 and the second sub-cavity 25 each have a relatively large smoke-gathering cavity, it is also possible to ensure that the volume of the air guide device 20 in the housed state is relatively small.

[0131] Example 4

[0132] like Figure 14 As shown, the structure of the range hood provided in this embodiment is basically the same as that of the range hood in Embodiment 2. The main difference is that the dimensions of the main cavity 21, the first sub-cavity 22, and the second sub-cavity 25 are all the same in the left-right direction. When the first sub-cavity 22 and the second sub-cavity 25 are both housed in the main cavity 21, the first sub-cavity 22 and the second sub-cavity 25 are inserted into each other in the left-right direction. While ensuring that the first sub-cavity 22 and the second sub-cavity 25 each have a relatively large smoke-gathering cavity, it is also possible to ensure that the volume of the air guide device 20 in the housed state is relatively small.

[0133] Example 5

[0134] like Figure 15 As shown, the structure of the range hood provided in this embodiment is basically the same as that of the range hood in Embodiment 2. The main difference between the two is that the range hood also includes a third drive mechanism 27. The third drive mechanism 27 is used to simultaneously drive the first sub-cavity 22 and the second sub-cavity 25 to move closer or further apart in the left and right directions. One third drive mechanism 27 can simultaneously drive the first sub-cavity 22 and the second sub-cavity 25 to expand or retract relative to the main cavity 21, respectively, and can realize the rapid switching of the relative positions of the first sub-cavity 22 and the second sub-cavity 25 relative to the main cavity 21. Compared with the first drive mechanism 23 and the second drive mechanism 26 in Embodiment 1, this embodiment only uses one third drive mechanism 27, making the overall structure of the range hood simple and compact.

[0135] Specifically, such as Figure 15As shown, the third drive mechanism 27 in this embodiment includes a gear 271, a first rack 272, a second rack 273, and a first drive motor. The gear 271 is pivotally connected to the main cavity 21. The first rack 272 extends in the left-right direction and is fixed to the first sub-cavity 22, meshing with the gear 271. The second rack 273 extends in the left-right direction and is fixed to the second sub-cavity 25, meshing with the gear 271 and distributed along the front-back direction on both sides of the gear 271. The first drive motor drives the gear 271 to rotate. When the first drive motor rotates counterclockwise, both the first rack 272 and the second rack 273 move towards the interior of the main cavity 21, thereby achieving the effect that both the first sub-cavity 22 and the second sub-cavity 25 are housed within the main cavity 21. When the first drive motor rotates clockwise, both the first rack 272 and the second rack 273 move outward toward the main cavity 21, thereby achieving the effect of the first sub-cavity 22 and the second sub-cavity 25 expanding left and right relative to the main cavity 21. The cooperation between the gear 271, the first rack 272, and the second rack 273 allows for more precise adjustment of the positions of the first sub-cavity 22 and the second sub-cavity 25 relative to the main cavity 21.

[0136] In addition, such as Figure 15 As shown, the first sub-cavity 22 has a first clearance opening 222 extending in the left-right direction, and the second sub-cavity 25 has a second clearance opening 252 extending in the left-right direction. When the first sub-cavity 22 and the second sub-cavity 25 move, the first clearance opening 222 and the second clearance opening 252 can avoid the output shaft of the first drive motor, thus preventing the first sub-cavity 22 and the second sub-cavity 25 from interfering with the first drive motor.

[0137] Example 6

[0138] like Figure 16 As shown, this embodiment provides a control method for controlling a range hood as described in Embodiment 1. The control method includes:

[0139] S1: Received the start command; specifically, the range hood also includes a switch and a controller. The switch can communicate with the controller via wired or wireless means. The controller can support wireless communication (2G / 3G / 4G / 5G, NB-IoT, LoRa, WiFi, BT, ZigBee) and wired communication (CAN, RS485), and can output control signals to the corresponding drive mechanism to adjust the operation mode of the main cavity 21 and the sub-cavities. In addition, the controller can also use WiFi, BT, ZigBee, and other functions to realize the linkage between the range hood and smart kitchen appliances. The controller can receive linkage commands to control the opening and closing of the range hood, and the smart kitchen appliances can achieve linkage within the local area network, enhancing the scalability of the range hood.

[0140] S2: Control the main cavity 21 to move downward relative to the main body 10 of the smoke machine, and at the same time control the sub-cavity to extend out of the main cavity 21 to the left or right.

[0141] When the range hood is turned on, the main cavity 21 and the first sub-cavity 22 can extend simultaneously. The time from receiving the power-on command to starting to absorb fumes is short, eliminating the need for users to wait for a long time. It can quickly absorb fumes and improve the user's cooking experience.

[0142] Specifically, such as Figure 1 and Figure 11 As shown, in existing range hoods, after receiving a power-on command, the main cavity 21 first moves downward relative to the main body 10 (approximately 5 seconds), then the first sub-cavity 22 moves left or right relative to the main cavity 21 to extend out of the main cavity 21 (approximately 5 seconds), and finally the fan inside the range hood starts working to achieve the range hood's smoke extraction effect. Therefore, the time from receiving the power-on command to the fan starting is 10 seconds. In this embodiment, when the range hood receives the power-on command, the main cavity 21 moves downward relative to the main body 10, and the first sub-cavity 22 moves left or right relative to the main cavity 21 simultaneously. That is, the time from receiving the power-on command to the fan starting is 5 seconds. Compared with the existing technology, this reduces the user's waiting time by 5 seconds, improving the user experience.

[0143] Specifically, if either the main cavity 21 or the sub-cavity stops moving while the other continues to move, it can mislead the user. The user might assume that one of the two has stopped and that the range hood is no longer in operation, allowing them to approach the hood and begin cooking. However, if the other continues to move, it could easily cause injury to the user, threatening their safety. To address this issue, in this embodiment, the main cavity 21 is in the second position while the sub-cavity is in the third position. This ensures that both the main cavity 21 and the sub-cavity stop simultaneously when the range hood is fully opened, preventing the user from misjudging the range hood's operating status and thus avoiding personal injury.

[0144] As a preferred embodiment, the method further includes the following after step S2:

[0145] Step S5: Obtain the position information of the main cavity 21 relative to the main body 10 in the vertical direction, and obtain the position information of the sub-cavity relative to the main cavity 21 in the horizontal direction. Specifically, the position information of the main cavity 21 relative to the main body 10 in the vertical direction can be obtained by detecting the motion state of the fourth drive mechanism 30 in Embodiment 1, and the position information of the sub-cavity relative to the main cavity 21 in the horizontal direction can be obtained by detecting the motion state of the first drive mechanism 23 in Embodiment 1. Specifically, the aforementioned position information can be obtained based on the working state of the motor 341 and the drive assembly 234.

[0146] Step S6: If the main cavity 21 is in the second position and the sub-cavity is in the position extending out of the main cavity 21, a first prompt message is played to remind the user that the opening action has been completed. The user's use of the range hood after being reminded by the first prompt message can prevent accidental contact with the moving range hood, further improving user safety. Specifically, the first prompt message can be implemented through at least one of the following: sound, indicator light illumination, or display of a prompt message on the display panel.

[0147] like Figure 2 As shown, the kitchen appliance also includes a fourth drive mechanism 30, which drives the air guide device 20 to move vertically relative to the range hood body 10. Step S2 involves controlling the main cavity 21 to move downwards relative to the range hood body 10. In one specific embodiment, as... Figure 17 As shown, this step includes:

[0148] S21: Obtain the first distance information L3 between the bottom surface of the cabinet and the bottom surface of the air guide device 20, and the first rate of change of the first distance information L3. Specifically, after obtaining the first distance information L3 between the bottom surface of the cabinet and the bottom surface of the air guide device 20 in real time, the first rate of change of the first distance information L3 can also be calculated. For example, if the first distance information L3 is a at time t1 and b at time t2, the quotient between the changed distance value ba and the change time t2-t1 can be calculated, thus obtaining the first rate of change of the first distance information L3 within that time period. Specifically, the distance L1 between the bottom surface of the cabinet and the stove can be measured in advance in the controller. A distance detection device is set on the bottom surface of the air guide device 20 and / or the upper surface of the stove. The distance detection device is used to detect the distance L2 between the bottom surface of the air guide device 20 and the upper surface of the stove. The aforementioned first distance information L3 = L1-L2. Through the above settings, the aforementioned first distance information L3 can be obtained quickly.

[0149] S22: Determine whether the fourth drive mechanism 30 is abnormal based on the first change speed; when the first change speed is less than the preset speed, for example, the first change speed is very slow or does not change, it is determined that the fourth drive mechanism 30 is abnormal. It may be that the main cavity 21 encounters an obstacle, causing the fourth drive mechanism 30 to be damaged or jammed. At this time, it is determined that the fourth drive mechanism 30 is abnormal. Therefore, it is possible to determine whether the fourth drive mechanism 30 is abnormal based on the first change speed.

[0150] S23: When the fourth drive mechanism 30 malfunctions, the air guide device 20 stops operating. When the fourth drive mechanism 30 malfunctions, its operation stops, i.e., the main cavity 21 stops operating, and a second prompt message is played to remind the user that the opening action has been completed. The user then checks and repairs the fourth drive mechanism 30 based on the second prompt message. Specifically, the second prompt message can be delivered through at least one of the following: sound, indicator light illumination, or a prompt message displayed on the display panel. The second prompt message needs to be distinguished from the first prompt message to facilitate quick identification of the malfunctioning component and improve the efficiency of troubleshooting the range hood.

[0151] In one specific embodiment, the step of determining whether the fourth drive mechanism 30 is malfunctioning based on the first rate of change, as mentioned in S22 above, can be:

[0152] S221: When the first change speed is less than the first preset speed, it is determined that the fourth drive mechanism 30 is abnormal. For example, under normal conditions, the air guide device 20 moves downward at a constant speed at the first preset speed. Therefore, when the first change speed is less than the first preset speed, the fourth drive mechanism 30 is in an abnormal state.

[0153] As a preferred option, such as Figure 3 As shown, the kitchen appliance also includes a first drive mechanism 23, which is configured to drive the sub-cavity to move left or right relative to the main cavity 21. Step S2 involves controlling the main cavity 21 to move downwards relative to the range hood body 10, while simultaneously controlling the sub-cavity to extend left or right out of the main cavity 21. In one specific embodiment, such as... Figure 18 As shown, this step includes:

[0154] S24: Obtain the second distance information L4 between the outer end face of the main cavity 21 and the outer end face of the sub-cavity in the left-right direction, and the second rate of change of the second distance information L4. Specifically, after obtaining the second distance information L4 between the outer end face of the main cavity 21 and the outer end face of the sub-cavity in the left-right direction in real time, the second rate of change of the second distance information L4 can also be calculated. For example, if the second distance information L4 is c at time t3 and d at time t4, the quotient between the changed distance value dc and the change time t4-t3 can be calculated, that is, the second rate of change of the second distance information L4 within the time period can be obtained. Specifically, a distance detection device can be set between the main cavity 21 and / or the sub-cavity, and the distance detection device is used to detect the second distance information L4 between the main cavity 21 and the sub-cavity.

[0155] S25: Determine whether the first drive mechanism 23 is abnormal based on the second change speed; when the second change speed is less than the preset speed, for example, the second change speed is very slow or does not change, it is determined that the first drive mechanism 23 is abnormal. It may be that the main cavity 21 encounters an obstacle, causing the first drive mechanism 23 to be damaged or jammed. At this time, it is determined that the first drive mechanism 23 is abnormal. Therefore, it is possible to determine whether the first drive mechanism 23 is abnormal based on the second change speed.

[0156] S26: When the first drive mechanism 23 malfunctions, the sub-cavity operation is stopped. When the first drive mechanism 23 malfunctions, its operation is stopped, i.e., the main cavity 21 operation is stopped, and a third prompt message is played to remind the user that the opening action has been completed. The user then checks and repairs the first drive mechanism 23 based on the prompt message. Specifically, the third prompt message can be delivered through at least one of the following: sound, indicator light illumination, or a prompt message displayed on the display panel. The third prompt message needs to be distinguishable from the first and second prompt messages to facilitate quick identification of the malfunctioning component and improve the efficiency of troubleshooting the range hood.

[0157] In one specific embodiment, the step of determining whether the first drive mechanism 23 is malfunctioning based on the second rate of change, as mentioned in S25, can be:

[0158] S251: When the second changing speed is less than the second preset speed, it is determined that the first driving mechanism 23 is abnormal. For example, under normal conditions, the sub-cavity moves uniformly to the left or right at the second preset speed. Therefore, when the second changing speed is less than the second preset speed, the first driving mechanism 23 is in an abnormal state.

[0159] Example 7

[0160] like Figure 19 As shown, this embodiment provides a control method for controlling a range hood as described in Embodiment 1. The control method includes:

[0161] S3: Received shutdown command; Specifically, the range hood also includes a switch and a controller. The switch can communicate with the controller via wired or wireless means. The controller can support wireless communication (2G / 3G / 4G / 5G, NB-IoT, LoRa, WiFi, BT, ZigBee) and wired communication (CAN, RS485), and can output control signals to the corresponding drive mechanism to adjust the operation mode of the main cavity 21 and the sub-cavities. In addition, the controller can also use WiFi, BT, ZigBee, and other functions to realize the linkage between the range hood and smart kitchen appliances. The controller can receive linkage commands to control the opening and closing of the range hood, and smart kitchen appliances can achieve linkage within a local area network, enhancing the scalability of the range hood.

[0162] S4: Control the main cavity 21 to move upward relative to the main body 10 of the smoke machine, and at the same time control the sub-cavity to extend into the main cavity 21 to the left or right.

[0163] like Figure 1 and Figure 11 As shown, when the range hood is being turned off, the main cavity 21 and the first sub-cavity 22 can retract simultaneously. The range hood takes a short time from receiving the shutdown command to being completely shut down, eliminating the need for users to wait for a long time and improving the user experience.

[0164] Specifically, in existing range hoods, upon receiving a shutdown command, the first sub-cavity 22 moves left or right relative to the main cavity 21 to retract into the main cavity 21 (approximately 5 seconds). Then, the main cavity 21 moves upward relative to the main body 10 (approximately 5 seconds). Finally, the fan inside the range hood stops working. Therefore, the time from receiving the shutdown command to the fan shutting off is 10 seconds. In this embodiment, however, upon receiving the shutdown command, the main cavity 21 moves upward relative to the main body 10, and the first sub-cavity 22 moves left or right relative to the main cavity 21 simultaneously. This means the time from receiving the shutdown command to the fan shutting off is 5 seconds. Compared to existing technologies, this reduces the user's waiting time by 5 seconds, improving the user experience.

[0165] Step S4 above involves controlling the upward movement of the main cavity 21 relative to the main body 10 of the range hood. In one specific embodiment, such as... Figure 20 As shown, this step includes:

[0166] S41: When a shutdown command is received, obtain the distance information between the bottom surface of the cabinet and the bottom surface of the air guide device 20;

[0167] S42: Control the operation of the air guide device 20 based on distance information. After obtaining the distance information between the bottom surface of the cabinet and the bottom surface of the air guide device 20, the operation of the air guide device 20 is reasonably controlled based on this distance information, that is, the air guide device 20 can be controlled to stop or continue to move.

[0168] Step S42 above involves controlling the operation of the air guide device 20 based on distance information. In one specific embodiment, such as... Figure 21 As shown, this step includes:

[0169] S421: When the distance information is within the first preset range, control the main cavity 21 to move to the first position at the first speed;

[0170] S422: When the distance information is within the second preset range, the main cavity 21 is controlled to move to the first position at a second speed; wherein the value within the first preset range is greater than the value within the second preset range, and the first speed is greater than the second speed. When the distance information is within the first preset range, the distance between the main cavity 21 and the range hood body 10 is large, so the main cavity 21 moves at a relatively fast speed, enabling the rapid retraction of the air guide device 20. When the distance information is within the second preset range, the main cavity 21 is almost completely inside the range hood body 10, and the baffle will block the opening on the cabinet. At this stage, a person's hand can easily be trapped between the baffle and the cabinet. Therefore, within the second preset range, the main cavity 21 moves at a slower speed, reducing the risk of the user being trapped.

[0171] Step S42 above involves controlling the operation of the air guide device 20 based on distance information. In one specific embodiment, such as... Figure 22 As shown, this step includes:

[0172] S423: When the distance information is within the first preset range, control the sub-cavity to move to the fourth position at the third speed;

[0173] S424: When the distance information is within the second preset range, control the main cavity 21 to move to the fourth position at the fourth speed; wherein, the value within the first preset range is greater than the value within the second preset range, and the third speed is greater than the fourth speed. When the distance information is within the first preset range, the distance between the sub-cavity and the main cavity 21 is large, so the sub-cavity moves at a relatively fast speed, enabling the sub-cavity to retract quickly. When the distance information is within the second preset range, the sub-cavity is almost completely inside the main cavity 21. At this stage, a person's hand can easily be trapped between the sub-cavity and the main cavity 21. Therefore, within the second preset range, the sub-cavity moves at a slower speed, reducing the risk of the user being trapped.

[0174] Example 8

[0175] Figure 23 This is a schematic diagram of the structure of a device in Embodiment 8 of the present invention. Figure 23 A block diagram of an exemplary device 120 suitable for implementing embodiments of the present invention is shown. Figure 23 The device 120 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0176] like Figure 23 As shown, device 120 is presented in the form of a general-purpose computing device. Components of device 120 may include, but are not limited to: one or more processors or processing units 160, system memory 180, and a bus 280 connecting different system components, including system memory 180 and processing unit 160.

[0177] Bus 280 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. Examples of these architectures include, but are not limited to, the industry-standard ISA bus architecture, the Microchannel architecture MAC bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the PCI bus for peripheral component interconnect.

[0178] Device 120 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by device 120, including volatile and non-volatile media, removable and non-removable media.

[0179] System memory 180 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 300 and / or cache memory 320. Device 120 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 340 may be used to read and write non-removable, non-volatile magnetic media (…). Figure 23 (Not shown), usually referred to as a "hard drive". Although Figure 23 Not shown, a disk drive for reading and writing to removable non-volatile disks such as "floppy disks" and an optical disk drive for reading and writing to removable non-volatile optical discs such as CD-ROMs, DVD-ROMs, or other optical media may be provided. In these cases, each drive may be connected to bus 280 via one or more data media interfaces. System memory 180 may include at least one program product having a set of, for example, at least one program module 420 configured to perform the functions of the embodiments of the present invention.

[0180] A program / utility 400 having at least one set of program modules 420 may be stored, for example, in system memory 180. Such program modules 420 include—but are not limited to—an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 420 typically perform the functions and / or methods described in the embodiments of the present invention.

[0181] Device 120 can also communicate with one or more external devices 140, such as a keyboard, pointing device, display 240, etc., and with one or more devices that enable a user to interact with device 120, and / or with any device that enables device 120 to communicate with one or more other computing devices, such as a network card, modem, etc. This communication can be performed through input / output I / O interface 220. Furthermore, in this embodiment, device 120 and display 240 are not separate entities, but are embedded in a mirror, so that when the display surface of display 240 is not displayed, the display surface of display 240 and the mirror surface visually blend together. Moreover, device 120 can also communicate with one or more networks, such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet, via network adapter 200. Figure 23 As shown, network adapter 200 communicates with other modules of device 120 via bus 280. It should be understood that, although... Figure 23 As not shown, other hardware and / or software modules can be used in conjunction with device 120, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0182] The processing unit 160 executes various functional applications and data processing by running programs stored in the system memory 180, such as implementing a control method provided in embodiments two, three or four of the present invention.

[0183] Example 9

[0184] Embodiment 9 of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a control method as provided in all embodiments 2, 3 or 4 of this application.

[0185] Any combination of one or more computer-readable media may be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. A more specific, non-exhaustive list of computer-readable storage media includes: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device.

[0186] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including—but not limited to—electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of transmitting, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0187] The program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0188] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—as well as conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or it can be connected to an external computer, for example, via the Internet using an Internet service provider.

[0189] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A kitchen appliance, characterized in that, include: The main body of the range hood (10) has an inlet and outlet (11) at its lower end; and The air guide device (20) includes a main cavity (21) and a sub-cavity. The main cavity (21) is connected to the main body (10) of the range hood. The main cavity (21) can switch between a first position where it is housed in the main body (10) of the range hood and a second position where it extends downward from the inlet and outlet (11). The sub-cavity is connected to the main cavity (21) and has a smoke inlet. The sub-cavity can switch between a position where it extends to the left or right of the main cavity (21) and a position where the smoke inlet is hidden in the main cavity (21). The sub-cavity includes a first sub-cavity (22). The maximum dimension of the air guide device (20) in the left-right direction is less than or equal to the width of the inlet and outlet (11), thereby enabling the main cavity (21) and the first sub-cavity (22) to extend or retract simultaneously. The range hood body (10) is used to be installed inside the cabinet. The cabinet has an opening located below the inlet and outlet (11). The kitchen appliance also includes a cover plate. The cover plate is located at the lower end of the air guide device (20). When the air guide device (20) is retracted into the cabinet, the cover plate blocks the opening.

2. The kitchen appliance according to claim 1, characterized in that, The first sub-cavity (22) is connected to the main cavity (21). The first sub-cavity (22) has a first air inlet (2211). The first sub-cavity (22) can switch between a third position extending out to the right side of the main cavity (21) and a fourth position housed in the main cavity (21). The sub-cavity also includes a second sub-cavity (25), which is connected to the main cavity (21). The second sub-cavity (25) has a second air inlet (2511) and can switch between a fifth position extending out from the left side of the main cavity (21) and a sixth position housed within the main cavity (21).

3. The kitchen appliance according to claim 2, characterized in that, The kitchen appliances also include: A first drive mechanism (23) is configured to independently drive the first sub-cavity (22) to switch between the third position and the fourth position; and The second drive mechanism (26) is configured to independently drive the second sub-cavity (25) to switch between the fifth position and the sixth position.

4. The kitchen appliance according to claim 2, characterized in that, The kitchen appliances also include: The third drive mechanism (27) is configured to simultaneously drive the first sub-cavity (22) and the second sub-cavity (25) to move closer to or further away from each other in the left-right direction.

5. The kitchen appliance according to claim 2, characterized in that, The main cavity (21), the first sub-cavity (22) and the second sub-cavity (25) have the same dimensions in the left and right directions. When the first sub-cavity (22) and the second sub-cavity (25) are both housed in the main cavity (21), the first sub-cavity (22) and the second sub-cavity (25) are interlocked in the left and right directions or arranged in the front and back directions.

6. The kitchen appliance according to claim 1, characterized in that, The air guide device (20) can extend or retract the main body (10) of the smoke machine independently in the vertical direction.

7. A control method, characterized in that, The control method for controlling the kitchen appliance as described in any one of claims 1 to 6 includes: Power on / off command received; Control the main cavity (21) to move downward relative to the main body (10) of the smoke machine, while controlling the sub-cavity to extend out of the main cavity (21) to the left or right; or control the main cavity (21) to move upward relative to the main body (10) of the smoke machine, while controlling the sub-cavity to extend into the main cavity (21) to the left or right.

8. The control method according to claim 7, characterized in that, The steps of controlling the main cavity (21) to move downward relative to the main body (10) of the smoke machine, and simultaneously controlling the sub-cavity to extend to the left or right of the main cavity (21), include: When the main cavity (21) is in the second position, the sub-cavity is in the position of extending out of the main cavity (21).

9. The control method according to claim 7, characterized in that, The step of controlling the main cavity (21) to move upward relative to the main body (10) of the smoke machine, and simultaneously controlling the sub-cavity to extend to the left or right into the main cavity (21), includes: When the main cavity (21) is in the first position, the sub-cavity is completely inside the main cavity (21).

10. The control method according to claim 7, characterized in that, The step of controlling the main cavity (21) to move upward relative to the main body (10) of the smoke machine, and simultaneously controlling the sub-cavity to extend to the left or right into the main cavity (21), includes: When a shutdown command is received, the distance information between the bottom surface of the cabinet and the bottom surface of the air guide device (20) is obtained, and the operation of the air guide device (20) is controlled according to the distance information.

11. The control method according to claim 10, characterized in that, The step of controlling the operation of the air guiding device (20) based on the distance information includes: When the distance information is within a first preset range, the main cavity (21) is controlled to move toward the first position at a first speed; When the distance information is within a second preset range, the main cavity (21) is controlled to move to the first position at a second speed; wherein the value within the first preset range is greater than the value within the second preset range, and the first speed is greater than the second speed.

12. The control method according to claim 10, characterized in that, The step of controlling the operation of the air guiding device (20) based on the distance information includes: When the distance information is within a first preset range, the sub-cavity is controlled to move at a third speed in the direction hidden inside the main cavity (21); When the distance information is within a second preset range, the main cavity (21) is controlled to move into the main cavity (21) at a fourth speed; wherein the value within the first preset range is greater than the value within the second preset range, and the third speed is greater than the fourth speed.

13. The control method according to claim 7, characterized in that, The kitchen appliance further includes a fourth drive mechanism (30), which is configured to drive the air guide device (20) to move vertically relative to the range hood body (10); the step of controlling the main cavity (21) to move downward relative to the range hood body (10) includes: Obtain the distance information between the bottom surface of the cabinet and the bottom surface of the air guide device (20) and the first rate of change of the distance information; Based on the first rate of change, determine whether the fourth drive mechanism (30) is malfunctioning; and When the fourth drive mechanism (30) malfunctions, the air guide device (20) stops operating.

14. The control method according to claim 13, characterized in that, The step of determining whether the fourth drive mechanism (30) is malfunctioning based on the first rate of change includes: When the first change speed is less than the first preset speed, it is determined that the fourth drive mechanism (30) is abnormal.

15. The control method according to claim 7, characterized in that, The kitchen appliance further includes a first drive mechanism (23), which is configured to drive the sub-cavity to move left or right relative to the main cavity (21); the step of simultaneously controlling the sub-cavity to extend left or right out of the main cavity (21) includes: Acquire the distance information between the outer end face of the main cavity (21) in the left-right direction and the outer end face of the sub-cavity in the left-right direction, as well as the second rate of change of the distance information; Based on the second rate of change, determine whether the first drive mechanism (23) is malfunctioning; and When the first drive mechanism (23) malfunctions, the sub-cavity operation is stopped.

16. The control method according to claim 15, characterized in that, The step of determining whether the first drive mechanism (23) is malfunctioning based on the second rate of change includes: When the second change speed is less than the second preset speed, it is determined that the first drive mechanism (23) is abnormal.

17. A device, characterized in that, The device includes: One or more processors; Storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the control method as described in any one of claims 7 to 16.

18. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the control method as described in any one of claims 7 to 16.

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