Fan structure, fan control method, fan control device and extractor hood

Abstract

The present application relates to the technical field of range hood, and particularly relates to a fan structure, a fan control method, a fan control device and a range hood. The fan structure of the range hood comprises: a wind pipe; a fan wheel assembly comprising a motor and a fan wheel connected with each other, the fan wheel being rotatably arranged in the wind pipe, and the fan wheel assembly being up-and-down floatable along the rotation axis of the fan wheel in a preset area relative to the wind pipe. The fan wheel assembly with up-and-down floatability can reduce the attachment of oil fume on the fan wheel, thereby reducing the attachment amount of oil dirt on the fan wheel, the attachment degree of oil dirt on the fan wheel is also reduced, thereby prolonging the working time of the fan wheel, reducing the cleaning frequency and reducing the maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the range hood technical field, specifically to a fan structure, a fan control method, a fan control device and a range hood. BACKGROUND

[0002] At present, with the development of economy, the improvement of people's living standard, people's quality of life is also higher and higher, the range hood has become an indispensable item of family.

[0003] When the range hood works, the motor drives the wind wheel to rotate to suck the oil fume, the oil fume is easy to adhere to the wind wheel when passing through the wind wheel, and the oil stain is easy to form after combining with the dust, so the wind wheel needs to be cleaned after the range hood works for a period of time, the cleaning frequency of the wind wheel is high, and the cost of maintaining the range hood is also high. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defect that the oil fume is easy to adhere to the wind wheel when passing through the wind wheel, so as to provide a fan structure, a fan control method, a fan control device and a range hood.

[0005] In order to solve the above problems, the present application provides a fan structure of a range hood, comprising: a wind pipe; a wind wheel assembly comprising a motor and a wind wheel connected together, the wind wheel being rotatably arranged in the wind pipe, the wind wheel assembly being able to float up and down along the rotation axis of the wind wheel in a preset area relative to the wind pipe.

[0006] Optionally, a plurality of coils are arranged in the wind pipe in the circumferential direction of the wind wheel, the shape of the coil is "8" shape, the wind wheel is a permanent magnet wind wheel, and the wind wheel can float up and down in the floating area surrounded by the plurality of coils, and the current in the coil is suitable for heating the wind pipe to heat the oil stain on the wind pipe.

[0007] Optionally, the fan structure further comprises a first switch, each coil is connected with a first switch, and the first switch is suitable for controlling whether the coil is short-circuited.

[0008] Optionally, the fan structure further comprises a power supply and a second switch, the positive and negative poles of the power supply are connected with the coils on the two sides of the first switch in correspondence, and the second switch is arranged between the power supply and the coil, and the second switch is suitable for controlling whether the power supply supplies power to the coil when the first switch is turned off.

[0009] Optionally, a guide mechanism is arranged between the outer wall of the wind pipe and the motor, and the guide mechanism guides the up and down floating of the wind wheel assembly.

[0010] The application further provides a fan control method for controlling the fan structure.

[0011] Optionally, the cooking parameter comprises at least one of an oil fume concentration, an oil fume temperature, and a cooking temperature.

[0012] Optionally, the step of controlling the wind wheel assembly of the fan structure to float up and down in the preset area according to the cooking parameter comprises: determining whether the oil fume concentration is greater than or equal to a first preset concentration value and less than or equal to a second preset concentration value; and controlling the wind wheel assembly of the fan structure to float up and down in the preset area when the oil fume concentration is greater than or equal to the first preset concentration value and less than or equal to the second preset concentration value.

[0013] Optionally, the step of controlling the wind wheel assembly of the fan structure to float up and down in the preset area according to the cooking parameter further comprises: controlling the wind wheel assembly of the fan structure to float up when the oil fume concentration is less than the first preset concentration value, so that the wind wheel assembly is away from the smoke suction port of the range hood.

[0014] Optionally, the step of controlling the wind wheel assembly of the fan structure to float up and down in the preset area according to the cooking parameter further comprises: controlling the wind wheel assembly of the fan structure to float down when the oil fume concentration is greater than the second preset concentration value, so that the wind wheel assembly is close to the smoke suction port of the range hood.

[0015] The application further provides a fan control device for controlling the fan structure, which is used to execute the fan control method.

[0016] The acquisition module is configured to acquire a cooking parameter of a location where the range hood is located or a current working gear of the range hood.

[0017] The control module is configured to control the wind wheel assembly of the fan structure to float up and down in a preset area according to the cooking parameter or the current working gear.

[0018] The application further provides a range hood, which comprises a fan structure and a controller.

[0019] The application further provides a computer readable storage medium, which stores computer instructions for causing a computer to execute the fan control method.

[0020] The present application has the following advantages:

[0021] 1. When the range hood is working, the motor drives the wind wheel to rotate. The wind wheel and the motor float up and down along the rotation axis of the wind wheel in the preset area. Compared with the range hood in the prior art, the wind wheel assembly that floats up and down can reduce the oil fume adhering to the wind wheel, and thus reduce the amount of oil dirt adhering to the wind wheel, and the degree of oil dirt adhering to the wind wheel is also reduced, and thus the working time of the wind wheel can be prolonged, the cleaning frequency is reduced, and the maintenance cost is reduced.

[0022] 2. In the circumferential direction of the wind wheel, a plurality of coils are arranged in the air duct, the shape of the coil is "8" shape, the wind wheel is a permanent magnet wind wheel, and the wind wheel can float up and down in the floating area surrounded by the plurality of coils. The current in the coil is suitable for heating the air duct to heat the oil dirt on the air duct, so that the solidified oil dirt falls into the oil cup, the oil dirt on the air duct can be cleaned, and the problem that the oil fume is difficult to clean on the air duct is effectively solved.

[0023] 3. When the wind wheel assembly needs to float up and down, the first switch is controlled to be closed, and when the wind wheel does not need to float up and down, the first switch is controlled to be opened.

[0024] 4. When the first switch is opened and the second switch is closed, the power supply supplies power to the coil, so that the permanent magnet wind wheel continuously receives the magnetic field force, and can continuously rotate at a certain position. By changing the current time, current size and current sequence of the plurality of coils, the position of the permanent magnet wind wheel on the rotation axis can be changed, so that the permanent magnet wind wheel can be close to or away from the oil fume, and thus the smoke suction effect can be adjusted, and the problem that the smoke suction effect can only be adjusted by adjusting the rotation speed of the wind wheel in the prior art is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 A front view schematic diagram of a range hood according to an embodiment of the present application is shown;

[0027] Figure 2 A partial sectional view schematic diagram of a wind wheel assembly of the range hood according to the embodiment of the present application is shown; Figure 1

[0028] Figure 3 A partial sectional view schematic diagram of a wind wheel assembly of the range hood according to the embodiment of the present application is shown; Figure 1 ​Fig. 1 is a schematic view of a partial cross-section of a fan wheel assembly of a range hood according to the present application;

[0029] Figure 4 Fig. 2 shows a schematic view of a controller, a coil, a motor and a first switch of a range hood according to the present application; Figure 1

[0030] Figure 5 Fig. 3 shows a schematic view of a fan wheel and short-circuiting of two coils of a range hood according to the present application; Figure 1

[0031] Figure 6 Fig. 4 shows a schematic view of a fan wheel and non-short-circuiting of two coils of a range hood according to the present application; Figure 1

[0032] Fig. 5 shows a schematic view of a fan wheel and eight coils of a range hood according to the present application; Figure 7

[0033] Fig. 6 shows a schematic view of a fan wheel and eight coils of a range hood according to the present application; Figure 8 Figure 7 Fig. 7 shows a schematic view of a fan wheel and eight coils of a range hood according to the present application;

[0034] Figure 9 Figure 7 Fig. 8 shows a schematic view of a fan wheel and eight coils of a range hood according to the present application;

[0035] Figure 10 Fig. 9 shows a schematic view of a fan wheel and eight coils of a range hood according to the present application; Figure 7

[0036] Fig. 10 shows a schematic flow chart of a fan control method according to the present application; Figure 11

[0037] Fig. 11 shows a schematic flow chart of a specific fan control method according to the present application. Figure 12

[0038] Fig. 12 shows a schematic view of a partial cross-section of a fan wheel assembly of a range hood according to the present application;

[0039] 11, duct; 12, motor; 13, fan wheel; 14, coil; 15, first switch; 16, guide rail; 17, connecting shaft; 20, controller; 30, fume hood. DETAILED DESCRIPTION

[0040] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0041] ​​​​​In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict.

[0044] As Figures 1 to 3 The fan structure of the range hood of the present embodiment includes: a duct 11 and a fan wheel assembly; the fan wheel assembly includes a motor 12 and a fan wheel 13 connected together, the fan wheel 13 is rotatably arranged in the duct 11, and the fan wheel assembly is up and down floating along the rotation axis of the fan wheel 13 within a preset area relative to the duct 11. Wherein, the duct 11 is fixed on the body of the range hood, the body includes a casing, a smoke collecting hood 30 and the like, the fan structure is arranged in the casing, and the smoke collecting hood 30 is connected with the casing.

[0045] By applying the fan structure of the present embodiment, when the range hood is working, the motor 12 drives the fan wheel 13 to rotate, and the fan wheel 13 rotates while the fan wheel 13 and the motor 12 float up and down together along the rotation axis of the fan wheel 13 within a preset area. Compared with the range hood in the prior art, within the same working time, the up and down floating fan wheel assembly can reduce the oil fume adhering to the fan wheel 13, thereby reducing the amount of oil stain adhering to the fan wheel 13, the degree of oil stain adhering to the fan wheel 13 is also reduced, thereby the working time of the fan wheel 13 can be prolonged, the cleaning frequency is reduced, and the maintenance cost is reduced.

[0046] In the embodiment, a plurality of coils 14 are arranged in the circumferential direction of the wind wheel 13 in the wind pipe 11, the coils 14 are in the shape of "8", the wind wheel 13 is a permanent magnet wind wheel, the wind wheel 13 can float up and down in the floating area surrounded by the coils 14, the current in the coils 14 is suitable for heating the wind pipe 11 to heat the oil stains on the wind pipe 11, so that the solidified oil stains fall into the oil cup, the oil stains on the wind pipe 11 can be cleaned, and the problem that the oil fume is difficult to clean on the wind pipe 11 is effectively solved. The single "8" shaped coil 14 is divided into an upper circle body and a lower circle body. When the wind wheel 13 does not rotate, the initial position of the wind wheel assembly is at the lowermost position due to the action of gravity; after the motor 12 is started, the "8" shaped coil 14 in the wind pipe 11 cuts the magnetic induction line at the same time, because the initial position of the wind wheel assembly corresponds to the lower circle body of the coil 14, the magnetic field strength at the lower circle body is greater than that at the upper circle body in the direction of the rotation axis, therefore, the induced current generated by the lower circle body cutting the magnetic induction line is greater than that generated by the upper circle body cutting the magnetic induction line, and then the induced magnetic field generated by the induced current of the lower circle body is greater than that generated by the induced current of the upper circle body, the directions of the two induced magnetic fields are as shown by N and S around the coil 14 in the figure, Figure 5 , Figure 5 , the two induced magnetic fields of the coil 14 on the left in the figure have magnetic field forces F1 and F2 on the magnetic field of the permanent magnet wind wheel, Figure 5 , the two induced magnetic fields of the coil 14 on the right have magnetic field forces F3 and F4 on the magnetic field of the permanent magnet wind wheel, so that the wind wheel 13 and the motor 12 float up along the direction of the rotation axis. When the wind wheel 13 floats up to the position corresponding to the upper circle body and the induced current generated by the upper circle body is greater than that generated by the lower circle body, the wind wheel 13 drives the motor 12 to descend along the direction of the rotation axis, and finally the wind wheel 13 and the motor 12 are suspended up and down. Specifically, the material of the wind wheel 13 is a permanent magnet material, preferably, the wind wheel 13 is a permanent magnet iron wind wheel. The permanent magnet wind wheel refers to that the wind wheel 13 is made of a permanent magnet material, and the permanent magnet iron wind wheel refers to that the wind wheel 13 is made of a permanent magnet iron.

[0047] It should be noted that in Figure 5 and Figure 6 , the arrow in the coil 14 refers to the direction of the induced current, F12 refers to the sum of the component of F1 on the rotation axis and the component of F2 on the rotation axis, F34 refers to the sum of the component of F3 on the rotation axis and the component of F4 on the rotation axis, and the "8" shaped coil 14 refers to a multi-turn coil 14 folded into the shape of "8".

[0048] It can be understood that as an alternative embodiment, the up and down floating of the wind wheel assembly can also be driven by a linear driving mechanism such as an electric cylinder or an oil cylinder.

[0049] In this embodiment, the wind turbine structure also includes a first switch 15, and each coil 14 is connected to the first switch 15. The first switch 15 is adapted to control whether the coil 14 is short-circuited. When the first switch 15 is closed, the two contacts of the first switch 15 are connected, and the coil 14 is short-circuited; when the first switch 15 is open, the coil 14 is not short-circuited. When the wind turbine assembly needs to float up and down, the first switch 15 is controlled to close; when the wind turbine 13 does not need to float up and down, the first switch 15 can be controlled to open.

[0050] It should be noted that "first switch 15 open" means that the two contacts of the first switch 15 are not conducting, and "first switch 15 closed" means that the two contacts of the first switch 15 are conducting.

[0051] In this embodiment, the fan structure also includes a power supply and a second switch. The positive and negative terminals of the power supply are connected to the coils 14 on both sides of the first switch 15. A second switch is provided between the power supply and the coils 14. The second switch is adapted to control whether the power supply provides power to the coils 14 when the first switch 15 is open. When the first switch 15 is open and the second switch is closed, the power supply provides power to the coils 14, causing the permanent magnet impeller to be continuously subjected to a magnetic force, allowing the permanent magnet impeller to rotate continuously at a certain position. By changing the energizing time, magnitude, and sequence of the energizing current of several coils 14, the position of the permanent magnet impeller on the rotation axis can be changed, allowing the permanent magnet impeller to approach or move away from the fumes, thereby adjusting the smoke extraction effect. This effectively solves the problem in the prior art that the smoke extraction effect can only be adjusted by adjusting the rotation speed of the impeller 13. When the second switch is open, the power supply does not provide power to the coils 14.

[0052] It should be noted that, in Figures 7 to 10 In the diagram, N or S next to coil 14 indicates that coil 14 is energized; the absence of N or S next to coil 14 indicates that coil 14 is not energized. Furthermore, coil 14 next to N and coil 14 next to S indicate that the energizing directions of the two coils are different. When the wind turbine 13 rotates clockwise, the energizing sequence is as follows: Figure 7 , Figure 8 , Figure 9 , Figure 10 .

[0053] In this embodiment, a guide mechanism is provided between the outer wall of the duct 11 and the motor 12 to guide the vertical movement of the impeller assembly. Specifically, the guide mechanism includes a guide rail 16 and a slider. The guide rail 16 is provided on the outer wall of the duct 11, and the slider is provided on the motor 12. The slider is slidably mounted on the guide rail 16. The guide mechanism has a simple structure and is easy to implement. It can be understood that, as an alternative implementation, the guide mechanism includes a guide shaft and a guide hole. The guide shaft is provided on the outer wall of the duct 11, and the guide hole is provided on the motor 12, with the guide shaft passing through the guide hole.

[0054] In the embodiment, the fan structure further comprises a connecting rotating shaft 17 connected to the output shaft of the motor 12, and the fan wheel 13 is fixed to the end of the connecting rotating shaft 17 away from the motor 12, and the connecting rotating shaft 17 is used to connect the motor 12 and the fan wheel 13.

[0055] As shown in Figure 11 The application further provides a fan control method for controlling the fan structure, and the fan control method comprises the following steps:

[0056] Obtaining the cooking parameter of the position where the range hood is located or the current working gear of the range hood;

[0057] Controlling whether the fan wheel assembly of the fan structure floats up and down in the preset area according to the cooking parameter or the current working gear.

[0058] When the range hood works, the motor 12 drives the fan wheel 13 to rotate, and when the cooking parameter meets the preset condition or the current working gear is the preset working gear, the fan wheel 13 rotates while the fan wheel 13 and the motor 12 float up and down together in the preset area along the rotating axis of the fan wheel 13. Compared with the range hood in the prior art, in the same working time, the fan wheel assembly that floats up and down can reduce the oil fume attached to the fan wheel 13, and thus reduce the amount of oil stains attached to the fan wheel 13, the degree of oil stain attachment of the fan wheel 13 is also reduced, and thus the working time of the fan wheel 13 can be prolonged, the cleaning frequency is reduced, and the maintenance cost is reduced.

[0059] During the operation of the range hood, the corresponding cooking parameter is detected in the preset range around the range hood, and the detected cooking parameter is analyzed, the current cooking process is judged according to the analysis result of the cooking parameter by the method of backstepping, the current amount of oil fume is further judged according to the current cooking process, and the working gear of the range hood, i.e. the working gear of the range hood, is selected according to the judged current amount of oil fume.

[0060] In the embodiment, the cooking parameters include at least one of oil fume concentration, oil fume temperature and cooking temperature, wherein the cooking temperature refers to the temperature detected within a preset range around the range hood during the cooking process, and in different cooking scenarios, the cooking temperature represents the temperature of different objects, for example, in the cooking process, the pot is covered with a pot cover, at this time, the cooking temperature refers to the temperature of the pot cover; in the cooking process, the pot cover is lifted, and there is food in the pot, at this time, the cooking temperature refers to the temperature of the food in the pot; if the pot cover is lifted, but there is no food in the pot, at this time, the cooking temperature refers to the temperature of the pot; if the pot is removed from the stove during the cooking process, the cooking temperature at this time refers to the temperature of the fire on the stove. During the cooking process, the cooking temperature and the oil fume concentration change with the cooking process, by analyzing the characteristics of the cooking temperature and the oil fume concentration in different stages of cooking, when controlling the range hood, by detecting the cooking temperature or the oil fume concentration, the current possible cooking state is inferred according to the detected cooking temperature or the oil fume concentration, and the speed of the fan wheel 13 and the movement of the fan wheel assembly are controlled according to the size of the oil fume of the judged cooking state, which can realize the automatic control of the range hood, without manually pressing the keys to control the movement of the fan wheel assembly. It can be understood that when the range hood is adjusted by the keys, the state of each key can be directly obtained to control the speed of the fan wheel 13 and the movement of the fan wheel assembly, at this time, the cooking parameters such as oil fume concentration and cooking temperature do not need to be obtained, and the control process is simplified.

[0061] Specifically, as shown in Figure 4 , Figure 5 and Figure 12 , when the cooking parameter is the oil fume concentration, the step of controlling the fan wheel assembly of the fan structure to float up and down in the preset area according to the cooking parameter includes:

[0062] when the oil fume concentration is greater than or equal to a first preset concentration value and less than or equal to a second preset concentration value;

[0063] When the oil fume concentration is greater than or equal to the first preset concentration value and less than or equal to the second preset concentration value, the wind wheel assembly of the fan structure is controlled to float up and down in the preset area. At this time, the controller 20 controls the first switch 15 to be closed, and the coil 14 is short-circuited. After the wind wheel 13 starts to rotate, the "8" shaped coil 14 in the air pipe 11 simultaneously cuts the magnetic induction line. Since the initial position of the wind wheel assembly corresponds to the lower circle body of the coil 14, the induced current generated by the lower circle body cutting the magnetic induction line is greater than the induced current generated by the upper circle body cutting the magnetic induction line. Therefore, the induced magnetic field generated by the induced current of the lower circle body is greater than the induced magnetic field generated by the induced current of the upper circle body, so that the wind wheel 13 drives the motor 12 to float in the direction of the rotation axis. When the wind wheel 13 floats to the position corresponding to the upper circle body, and the induced current generated by the upper circle body is greater than the induced current generated by the lower circle body, the wind wheel 13 drives the motor 12 to descend in the direction of the rotation axis. Finally, the wind wheel 13 is suspended up and down, which can reduce the oil fume adhering to the wind wheel 13, thereby reducing the amount of oil dirt adhering to the wind wheel 13, and reducing the degree of oil dirt adhering to the wind wheel 13. Therefore, the working time of the wind wheel 13 can be prolonged, the cleaning frequency is reduced, and the maintenance cost is reduced.

[0064] It should be noted that in Figure 4 , the dotted line refers to the "8" shaped coil, the dashed line refers to the electrical connection between the components, and the solid rectangular frame refers to each component.

[0065] The step of controlling the wind wheel assembly of the fan structure to float up and down in the preset area according to the cooking parameter further includes: when the oil fume concentration is less than the first preset concentration value, controlling the wind wheel assembly of the fan structure to float up, so that the wind wheel assembly is away from the smoke inlet of the range hood. When the oil fume concentration is less than the first preset concentration value, the oil fume is very little, and the wind wheel assembly of the fan structure is controlled to float up, so that the wind wheel assembly is away from the smoke inlet of the range hood, which reduces the oil fume adhering to the wind wheel 13 without affecting the smoke suction effect.

[0066] The step of controlling the wind wheel assembly of the fan structure to float up and down in the preset area according to the cooking parameter further includes: when the oil fume concentration is greater than the second preset concentration value, controlling the wind wheel assembly of the fan structure to float down, so that the wind wheel assembly is close to the smoke inlet of the range hood. When the oil fume concentration is greater than the first preset concentration value, the oil fume is very much, and the wind wheel assembly of the fan structure is controlled to float down, so that the wind wheel assembly is close to the smoke inlet of the range hood, which improves the smoke suction effect and avoids the oil fume from spreading.

[0067] Specifically, when the cooking parameter is the cooking temperature, the step of controlling the wind wheel assembly of the fan structure to float up and down in the preset area according to the cooking parameter includes: determining whether the cooking temperature is greater than or equal to a first preset temperature value and less than or equal to a second preset temperature value; and controlling the wind wheel assembly of the fan structure to float up and down in the preset area when the cooking temperature is greater than or equal to the first preset temperature value and less than or equal to the second preset temperature value.

[0068] When the cooking temperature is less than the first preset temperature value, the oil fume is little, the wind wheel assembly of the fan structure is controlled to float up, so that the wind wheel assembly is away from the smoke suction port of the range hood, and the oil fume is reduced from adhering to the wind wheel 13 without affecting the smoke suction effect.

[0069] When the cooking temperature is greater than the second preset temperature value, the oil fume is much, the wind wheel assembly of the fan structure is controlled to float down, so that the wind wheel assembly is close to the smoke suction port of the range hood, the smoke suction effect is improved, and the oil fume is prevented from spreading.

[0070] It should be noted that when the wind wheel assembly of the fan structure is controlled to float up or float down, the controller 20 controls the first switch 15 to be turned off, and then controls the corresponding second switch to be turned on, so that the power supply supplies power to the corresponding coil 14, so that the permanent magnet wheel is continuously rotated at a certain position under the magnetic field force.

[0071] Specifically, the step of controlling the wind wheel assembly of the fan structure to float up and down in the preset area according to the current working gear includes:

[0072] If the current working gear is the first working gear, the wind wheel assembly of the fan structure is controlled to float up and down in the preset area;

[0073] If the current working gear is the second working gear, the wind wheel assembly of the fan structure is controlled to be away from the smoke suction port of the range hood;

[0074] If the current working gear is the third working gear, the wind wheel assembly of the fan structure is controlled to be close to the smoke suction port of the range hood.

[0075] It should be noted that different oil fume concentrations, oil fume temperatures and cooking temperatures correspond to different working gears of the range hood. For example, taking the oil fume concentration as the cooking parameter, the oil fume concentration in the range of 0 mg / m 3 to 10 mg / m 3 corresponds to the second working gear, the oil fume concentration in the range of 10 mg / m 3 to 20 mg / m 3 corresponds to the first working gear, and the oil fume concentration in the range of 20 mg / m 3 to 30 mg / m 3The oil fume concentration in the concentration range corresponds to the third working gear. For example, taking the oil fume temperature as the cooking parameter, the oil fume temperature in the temperature range of 0℃ to 20℃ corresponds to the second working gear, the oil fume temperature in the temperature range of 20℃ to 40℃ corresponds to the first working gear, and the oil fume temperature in the temperature range of 40℃ to 60℃ corresponds to the third working gear. For example, when the obtained oil fume concentration is 15mg / m 3 , it indicates that the current working gear is the first working gear.

[0076] The application further provides a fan control device for the fan structure, for executing the fan control method, and the fan control device comprises:

[0077] An acquisition module is configured to acquire a cooking parameter of a position where the range hood is located or a current working gear of the range hood.

[0078] A control module is configured to control whether the fan wheel assembly of the fan structure is floating according to the cooking parameter or the working gear.

[0079] The fan control device provided by the embodiments of the application is used to execute the fan control method provided by the above embodiments, and has the same implementation manner and principle. For details, refer to the related description of the method embodiments.

[0080] The application further provides a range hood, which comprises a fan structure and a controller 20, and the controller 20 comprises at least one processor and a memory connected with the at least one processor in communication, wherein the memory stores instructions executable by the processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the fan control method.

[0081] Specifically, the controller 20 is electrically connected with the motor 12, the coil 14, the first switch 15 and the second switch, the controller 20 controls the rotation of the motor 12, the current of the coil 14, the action of the first switch 15 and the second switch, the first switch 15 is electrically connected with the controller 20 and the coil 14, the controller 20 can drive the first switch 15 to be closed, and the first switch 15 will cause the connected coil 14 to be short-circuited after being closed.

[0082] In the embodiment, the range hood further comprises a casing and a smoke collecting hood 30, etc., the fan structure is arranged in the casing, and the smoke collecting hood 30 is connected with the casing. The range hood can be a T-shaped range hood or a side suction range hood, etc. Specifically, the coil 14 in the air duct 11 can be multiple, and the specific number is determined by the product. For example, four coils are arranged in the air duct 11 in Figure 1 , and eight coils are arranged in the air duct 11 in Figures 7 to 10 .

[0083] Specifically, as shown in Figure 5As shown, after the first switch 15 is closed, the coil 14 forms an "8" shape. After the permanent magnet impeller starts to rotate, the upper and lower circular bodies inside the duct 11 simultaneously cut the magnetic field lines. The initial position of the impeller 13 corresponds to the lower circular body, causing the induced current generated by the lower circular body cutting the magnetic field lines to be greater than that generated by the upper circular body cutting the magnetic field lines. Therefore, the induced magnetic field generated by the induced current in the lower circular body is greater than that generated by the induced magnetic field in the upper circular body. The two induced magnetic fields exert magnetic forces F1 and F2 on the magnetic field of the permanent magnet impeller, causing the impeller 13 to drive the motor 12 to float upward along the guide rail 16. When the impeller 13 floats up to the point where the induced current generated by the upper circular body is greater than that generated by the lower circular body, the impeller 13 drives the motor 12 to descend along the guide rail 16, eventually suspending itself vertically.

[0084] Specifically, such as Figure 6 As shown, after the first switch 15 is turned off, when the permanent magnet impeller rotates, the controller 20 alternately drives the coil 14 to be energized, so that the permanent magnet impeller is continuously subjected to magnetic force when rotating, which allows the permanent magnet impeller to rotate continuously at a certain position. By changing the energizing time, magnitude, and sequence of the coil 14, the rotation position of the permanent magnet impeller can be changed, allowing the permanent magnet impeller to approach or move away from the oil fumes.

[0085] In this embodiment, the processor can be a central processing unit (CPU). The processor can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or combinations of the above types of chips.

[0086] In this embodiment, the memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the wind turbine control method in this embodiment of the invention. The processor executes various functional applications and data processing by running the non-transitory software programs, instructions, and modules stored in the memory, thereby implementing the wind turbine control method in the above method embodiment.

[0087] The memory can include a program storage area and a data storage area, wherein the program storage area can store an operating system, application programs required by at least one function; and the data storage area can store data created by the processor and the like. In addition, the memory can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory can optionally include a memory disposed remotely relative to the processor, which can be connected to the processor through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0088] The application further provides a computer readable storage medium, which stores computer instructions for causing a computer to execute the fan control method described above. The storage medium can be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory, a Hard Disk Drive (HDD), a Solid-State Drive (SSD), or the like; and the storage medium can also include a combination of the above-mentioned types of memories.

[0089] From the above description, it can be seen that the above-mentioned embodiments of the application achieve the following technical effects:

[0090] 1. The fan structure comprises a wind pipe 11 and a wind wheel assembly, the wind wheel assembly comprising a motor 12 and a wind wheel 13, and an electromagnetic induction coil 14 is added in the wind pipe 11, a single coil 14 is folded into an "8" shape after being folded by multiple turns, the single coil 14 is divided into an upper circle body and a lower circle body, and whether the "8" shaped coil 14 is short-circuited can be controlled through a first switch 15; after the first switch 15 is closed, the magnetic repulsion force of the permanent magnet wind wheel is increased by the induced current generated by the coil 14 cutting the magnetic induction line when the permanent magnet wind wheel rotates, and the permanent magnet wind wheel can be suspended up and down by overcoming the gravity, so that the wind wheel 13 can drive the motor 12 to float up and down along the guide rail 16 direction when rotating, so that the oil smoke is not easy to adhere to the wind wheel 13.

[0091] 2. The controller 20 can actively drive the coil 14 alternately, and control the size and direction of the magnetic field of the coil 14, so that the coil 14 generates a magnetic field, and then the permanent magnet wind wheel continuously receives the magnetic field force when rotating, so that the permanent magnet wind wheel can move along the guide rail 16 direction, and the permanent magnet wind wheel can rotate at a specific position, so as to realize that the permanent magnet wind wheel is close to or away from the oil smoke, and adjust the smoke suction effect.

[0092] 3. The coil 14 in the air duct 11 generates induced current after cutting the magnetic induction lines, and heats the air duct 11 to realize the function of melting the oil stains.

[0093] 4. The fan structure can be applied to T-shaped and side suction range hood, solves the problem that oil fume is easy to adhere to the fan wheel 13 and cannot be adjusted by other methods, and can also cooperate with the steam washing and hot washing function of the range hood.

[0094] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A fan structure for a range hood, characterized in that, include: Air duct (11); The impeller assembly includes a motor (12) and an impeller (13) connected to each other. The impeller (13) is rotatably disposed inside the air duct (11). The impeller assembly can float up and down relative to the air duct (11) along the rotation axis of the impeller (13) within a preset area. In the circumferential direction of the impeller (13), the air duct (11) is provided with a plurality of coils (14). The coils (14) are shaped like the number "8". The impeller (13) is a permanent magnet impeller. The impeller (13) can float up and down within the floating area enclosed by the plurality of coils (14). The current in the coils (14) is suitable for heating the air duct (11) to heat the oil stains on the air duct (11).

2. The fan structure according to claim 1, characterized in that, The fan structure also includes a first switch (15), each of the coils (14) is connected to the first switch (15), and the first switch (15) is adapted to control whether the coil (14) is short-circuited.

3. The fan structure according to claim 2, characterized in that, The fan structure also includes a power supply and a second switch. The positive and negative terminals of the power supply are connected to the coils (14) on both sides of the first switch (15). The second switch is provided between the power supply and the coils (14). The second switch is adapted to control whether the power supply supplies power to the coils (14) when the first switch (15) is off.

4. The fan structure according to any one of claims 1 to 3, characterized in that, A guide mechanism is provided between the outer wall of the air duct (11) and the motor (12), and the guide mechanism guides the up and down floating of the wind turbine assembly.

5. A fan control method, characterized in that, The fan control method for controlling the fan structure according to any one of claims 1 to 4 includes the following steps: Get the cooking parameters of the range hood or the current operating level of the range hood at its location; The fan structure's impeller assembly is controlled to float up and down within a preset area based on the cooking parameters or the current operating level.

6. The fan control method according to claim 5, characterized in that, The cooking parameters include at least one of oil fume concentration, oil fume temperature, and cooking temperature.

7. The fan control method according to claim 6, characterized in that, The steps of controlling whether the impeller assembly of the fan structure floats up and down within a preset area according to the cooking parameters include: Determine whether the oil fume concentration is greater than or equal to a first preset concentration value and less than or equal to a second preset concentration value; When the oil fume concentration is greater than or equal to a first preset concentration value and less than or equal to a second preset concentration value, the fan rotor assembly of the fan structure is controlled to float up and down within a preset area.

8. The fan control method according to claim 7, characterized in that, The step of controlling whether the impeller assembly of the fan structure floats up and down within a preset area according to the cooking parameters further includes: When the oil fume concentration is less than a first preset concentration value, the impeller assembly of the fan structure is controlled to float upward so that the impeller assembly is away from the smoke inlet of the range hood.

9. The fan control method according to claim 7, characterized in that, The step of controlling whether the impeller assembly of the fan structure floats up and down within a preset area according to the cooking parameters further includes: When the oil fume concentration is greater than the second preset concentration value, the impeller assembly of the fan structure is controlled to float downward so that the impeller assembly is close to the smoke inlet of the range hood.

10. A wind turbine control device for controlling the wind turbine structure according to any one of claims 1 to 4, for executing the wind turbine control method according to any one of claims 5 to 9, characterized in that, The fan control device includes: The acquisition module is used to acquire the cooking parameters of the range hood's location or the current operating level of the range hood; The control module is used to control whether the impeller assembly of the fan structure floats up and down within a preset area according to the cooking parameters or the current working level.

11. A range hood, characterized in that, include: The wind turbine structure and controller (20) include at least one processor and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the wind turbine control method according to any one of claims 5 to 9.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the wind turbine control method according to any one of claims 5 to 9.

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