A range hood and a control method thereof

Abstract

The present application relates to a kind of range hood and its control method, it is related to kitchen electrical technology field.The present application proposes a kind of range hood, including air duct module, filter and cleaning assembly, air duct module is equipped with air duct cavity;Filter is equipped with multiple filter holes of filtering oil fume, filter is set in air duct cavity;Cleaning assembly is set in air duct cavity and is close to filter setting, cleaning assembly is according to the self-cleaning of filter according to the monitoring point wind speed of passing through filter.Cleaning assembly is set by setting cleaning assembly, cleaning assembly is according to the self-cleaning of filter according to the monitoring point wind speed;To this end, cleaning assembly is according to the self-cleaning of filter according to the state, avoids the situation that filter cleaning is not in time to cause oil stain accumulation or cleaning is too frequent to cause energy waste, prolongs the service life of filter, improves the filtering effect of filtration, reduces the air duct resistance in air duct cavity, reduces maintenance cost, improves user experience and energy efficiency.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more specifically, to a range hood and its control method. Background Technology

[0002] When a range hood operates for a long time, a large amount of grease will accumulate on the filter, affecting the airflow performance of the range hood, and it needs to be cleaned regularly by hand.

[0003] Currently, self-cleaning technologies for range hoods mainly focus on improving filter materials and timed cleaning, but they haven't effectively solved the problem of automatically adjusting the cleaning cycle based on usage frequency and user dietary habits. Furthermore, timed cleaning presents two problems: infrequent cleaning leads to grease buildup; and excessive cleaning wastes energy. Summary of the Invention

[0004] This invention provides a range hood and its control method, wherein the cleaning component cleans the filter based on the wind speed at the monitored point.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a range hood, comprising:

[0007] The air duct module is equipped with an air duct cavity;

[0008] The filter has multiple filter holes for filtering oil fumes and is installed inside the air duct cavity;

[0009] The cleaning component is located inside the air duct cavity and close to the filter. The cleaning component performs self-cleaning on the filter based on the air velocity at the monitoring point through which the filter passes.

[0010] Optionally, the cleaning component includes a drive element and a heating structure, wherein the moving end of the drive element is connected to the first end of the heating structure via a transmission connection;

[0011] The driving component drives the heating structure to dynamically or statically clean the filter.

[0012] Optionally, the cleaning assembly also includes a push rod structure, wherein the moving end of the drive element is connected to one end of the push rod structure in a transmission manner;

[0013] The first end of the heating structure is rotatably connected to the push rod structure, and the second end of the heating structure is rotatably connected to the inner wall of the air duct module.

[0014] Optionally, the push rod structure includes a sleeve, a worm gear structure, and a push rod. The push rod is fitted onto one end of the sleeve, and the worm gear structure is installed at the other end. The sleeve is rotatably connected to the air duct module. The input end of the worm gear structure is connected to the output shaft of the drive component, and the moving end of the worm gear structure is connected to the push rod.

[0015] Optionally, the heating structure includes a first heating rod and at least one second heating rod, wherein a first end of the at least one second heating rod is rotatably connected to the side wall of the first heating rod, and a second end of the at least one second heating rod is rotatably connected to the inner wall of the air duct module.

[0016] One end of the first heating rod is rotatably connected to the push rod structure;

[0017] Heating elements are provided in the first heating rod and at least one second heating rod.

[0018] Optionally, the heating structure further includes a fixing part, which is disposed on the inner wall of the air duct module; the fixing part is provided with at least one rotating shaft, and the second end of at least one second heating rod is rotatably connected to at least one rotating shaft;

[0019] The moving end of the driving component drives the push rod structure to rotate periodically, so that the first heating rod pushes at least one second heating rod to rotate periodically around the fixed part.

[0020] Optionally, the range hood also includes a sensor and a fan module. The sensor is located inside the duct cavity and below the filter. The sensor is used to monitor the wind speed at the monitoring point after the oil fumes have passed through the filter.

[0021] The fan module is connected to the duct module and exhausts the oil fumes;

[0022] The wind speed at the monitoring point is less than the predetermined wind speed of the fan module, and the cleaning component self-cleanes the filter.

[0023] Secondly, the present invention proposes a control method for a range hood, including any of the range hoods described above; the control method includes the following steps:

[0024] The range hood starts and exhausts the cooking fumes.

[0025] Based on the wind speed at the monitored points, determine whether the conditions for activating the cleaning components have been met;

[0026] When the conditions for activation of the cleaning component are met, the cleaning component cleans the filter.

[0027] Optionally, the step of determining whether the conditions for activating the cleaning component have been met based on the monitored wind speed at the monitoring point includes:

[0028] The wind speed at the monitoring point is compared with the predetermined wind speed of the fan module. If the wind speed at the monitoring point is less than the predetermined wind speed of the fan module, the cleaning component meets the activation conditions.

[0029] The wind speed at the monitoring point is compared with the predetermined wind speed of the fan module. If the wind speed at the monitoring point is equal to or greater than the predetermined wind speed of the fan module, the cleaning component has not met the start-up conditions.

[0030] Optionally, when the cleaning component's activation conditions are met, the cleaning component's steps for cleaning the filter include:

[0031] When the cleaning component activation conditions are met, the moving end of the drive unit drives the push rod structure to extend.

[0032] Whether the working conditions of the heating structure have been met depends on whether the push rod structure extends to the target position.

[0033] When the operating conditions of the heating structure are reached, it is determined whether the cleaning component should perform dynamic cleaning of the filter.

[0034] Optionally, when the cleaning component starts up, the step of cleaning the filter by the cleaning component further includes:

[0035] When the cleaning component performs dynamic cleaning, the moving end of the drive unit drives the push rod structure to rotate periodically, so that the heating structure dynamically cleans the filter.

[0036] When the cleaning component is not performing dynamic cleaning, the push rod structure extends to the target position and remains unchanged so that the heating structure statically cleans the filter.

[0037] The beneficial effects of the range hood and its control method provided in the embodiments of the present invention include:

[0038] By setting up a cleaning component, the cleaning component can self-clean the filter based on the wind speed at the monitoring point. This allows the cleaning component to self-clean according to the filter's condition, avoiding situations where oil accumulation occurs due to untimely filter cleaning or energy waste is caused by excessive cleaning. This extends the filter's service life, improves the filtration effect, reduces airflow resistance in the duct cavity, lowers maintenance costs, and enhances user experience and energy efficiency.

[0039] Furthermore, the cleaning component includes a push rod structure and a drive unit. The push rod structure enables dynamic recovery and intelligent control of the heating structure, allowing for both static and dynamic cleaning of the filter. This extends the service life of the cleaning component and reduces maintenance costs. The dynamic cleaning state of the cleaning component expands the self-cleaning heating range of the filter and filter screen structure. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1This is an exploded view of the range hood provided in this embodiment;

[0042] Figure 2 This is a cross-sectional view of the range hood provided in this embodiment;

[0043] Figure 3 This is a schematic diagram of the cleaning component provided in this embodiment from a first-view perspective;

[0044] Figure 4 for Figure 3 A partial schematic diagram of A in the middle;

[0045] Figure 5 This is a schematic diagram of the cleaning component provided in this embodiment from a second perspective.

[0046] Figure 6 A schematic diagram showing the push rod of the cleaning component provided in this embodiment fully extended;

[0047] Figure 7 This is a schematic diagram showing the cleaning component provided in this embodiment in a recycling state.

[0048] Icons: 010-Range hood; 100-Induction cooker module; 110-Countertop; 111-Inlet; 120-Bottom shell; 121-First limit slot; 200-Duct module; 210-Duct housing; 211-Smoke inlet; 212-Smoke outlet; 213-Opening; 214-Duct cavity; 215-Second limit slot; 220-Oil cup; 230-Allowance housing; 231-Allowance groove; 232-Back panel; 300-Filter structure; 400-Filter; 500-Fan module; 510-Fan; 5 11-Fan box; 5111-Fan opening; 5112-Outlet; 512-Motor; 513-Impeller; 520-Fan housing; 521-Air outlet; 600-Sensing element; 700-Cleaning component; 710-Drive element; 720-Push rod structure; 721-Sleeve; 7211-Connecting hole; 722-Push rod; 730-Heating structure; 731-First heating rod; 7311-First connecting shaft; 7312-Second connecting shaft; 732-Second heating rod; 740-Fixing part; 741-Rotating shaft. Detailed Implementation

[0049] In response to the problems mentioned in the background art, the present invention provides a range hood and its control method, wherein the cleaning component cleans the filter according to the wind speed at the monitoring point, thereby improving the problems of oil accumulation caused by untimely filter cleaning or energy waste caused by excessive cleaning.

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, 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, and therefore should not be construed as a limitation of this invention.

[0054] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0055] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0056] The following describes in detail the overall structure, working principle, and technical effects of the range hood provided by the present invention, as well as the detailed steps, implementation principles, and technical effects of the corresponding range hood control method, through embodiments and in conjunction with the accompanying drawings.

[0057] This invention proposes a range hood 010, which can intelligently control the cleaning component 700 to self-clean the filter 400 according to the wind speed at the monitoring point. This avoids the situation where the filter 400 is not cleaned in time, resulting in the accumulation of oil stains or the waste of energy caused by excessive cleaning. It extends the service life of the filter 400, reduces maintenance costs, and improves user experience and energy efficiency.

[0058] Please refer to Figure 1 and Figure 2This invention proposes a range hood 010, comprising:

[0059] Air duct module 200, the air duct module 200 is provided with air duct cavity 214;

[0060] The filter 400 has multiple filter holes for filtering oil fumes and is installed inside the air duct cavity 214.

[0061] The cleaning component 700 is located inside the air duct cavity 214 and close to the filter 400. The cleaning component 700 performs self-cleaning of the filter 400 according to the wind speed at the monitoring point.

[0062] Understandably, when cooking fumes pass through filter 400, the filter pores of filter 400 finely filter and adsorb grease and particulate matter in the fumes. However, with prolonged operation of the range hood 010, the filter pores of filter 400 become clogged with grease, affecting the airflow velocity after passing through filter 400. This causes the airflow velocity at the monitoring point after passing through filter 400 to slow down due to obstruction. Therefore, by incorporating a cleaning component 700, which self-cleans filter 400 based on the airflow velocity at the monitoring point, the cleaning component 700 achieves self-cleaning based on the condition of filter 400. This avoids situations where untimely cleaning of filter 400 leads to grease accumulation or excessive cleaning results in energy waste, extends the service life of filter 400, improves its filtration effect, reduces airflow resistance within the duct cavity 214, lowers maintenance costs, and improves user experience and energy efficiency.

[0063] In this embodiment, the range hood 010 includes an induction cooker module 100.

[0064] In this embodiment, please refer to Figure 1 and Figure 2 The induction cooker module 100 includes a countertop 110 and a bottom shell 120 disposed at the bottom of the countertop 110; wherein, the countertop 110 is provided with an inlet 111, and the bottom shell 120 forms an air intake cavity corresponding to the inlet 111.

[0065] Specifically, the air duct module 200 is located at the bottom of the induction cooker module 100, the air duct housing 210 is located at the bottom of the bottom shell 120, and the smoke inlet 211 is connected to and opposite to the air inlet 111.

[0066] Understandably, the induction cooker module 100 is used to heat the cookware. The food inside the cookware is heated and produces oil fumes. Under the action of the fan module 500, the oil fumes enter the air duct housing 210 in sequence through the inlet 111, the air inlet cavity and the smoke inlet 211.

[0067] In this embodiment, the range hood 010 includes a duct module 200.

[0068] In this embodiment, please refer to Figure 1 and Figure 2 The duct module 200 includes a duct housing 210 and an oil cup 220. The duct housing 210 is provided with a smoke inlet 211, a smoke outlet 212, an opening 213 and a duct cavity 214. The top of the duct housing 210 is provided with a smoke inlet 211 for the entry of oil fumes, the bottom of the duct housing 210 is provided with an opening 213, and the side wall of the duct housing 210 is provided with a smoke outlet 212 for the discharge of oil fumes into the fan module 500. The duct cavity 214 connects the smoke inlet 211, the smoke outlet 212 and the opening 213.

[0069] Furthermore, the oil cup 220 is used to collect small particles such as grease. The oil cup 220 is located at the bottom of the air duct housing 210 and below the opening 213, with the air duct housing 210 slidably disposed therebetween. It is understood that the cleaning assembly 700 performs self-cleaning of the filter 400 and filter screen by heating; the small particles such as grease filtered and adsorbed by the filter 400 and filter screen drip down into the oil cup 220 located at the bottom after being heated; and the oil cup 220 can also be pulled out of the air duct housing 210 for easy cleaning of the grease collected inside.

[0070] The air duct housing 210 is a rectangular cylindrical housing structure; of course, the air duct housing 210 can also be a circular or other shaped housing structure.

[0071] In this embodiment, please refer to Figure 1 and Figure 2 The duct housing 210 also includes a clearance housing 230 positioned relative to the cleaning component 700. The clearance housing 230 has a clearance groove 231 communicating with the duct cavity 214. The clearance housing 230 has a rectangular structure, and a back plate 232 is provided on its back. It is understood that when the cleaning component 700 is not in operation, it can be stored within the clearance groove 231, preventing it from being exposed to fumes for extended periods and thus extending the lifespan of the self-cleaning device.

[0072] In this embodiment, the range hood 010 also includes a filter structure 300.

[0073] The filter structure 300 is used for the first coarse filtration of grease and particulate matter in the fumes.

[0074] In this embodiment, please refer to Figure 1 and Figure 2 The filter structure 300 is located at the inlet 111; then, multiple first limiting slots 121 are provided on the inner wall of the air inlet cavity of the bottom shell 120, and the filter structure 300 is set on the inner wall of the air inlet cavity of the bottom shell 120 through the multiple first limiting slots 121.

[0075] Of course, in another embodiment, the filter structure 300 can also be located at the smoke inlet 211; then multiple limiting slots are provided on the inner wall of the air duct housing 210, and the filter structure 300 is set on the inner wall of the air duct housing 210 through the multiple limiting slots.

[0076] Among them, the filter structure 300 can be a structure with a metal filter.

[0077] In this embodiment, the range hood 010 also includes a filter 400.

[0078] Among them, filter 400 is used for a second fine filtration of grease and particulate matter in the fumes.

[0079] In this embodiment, please refer to Figure 1 and Figure 2 The filter 400 has multiple filter holes for filtering oil fumes; the filter 400 can be a porous device made of metal or high-temperature resistant material. The inner and outer surfaces of the filter 400 are coated with a strong oxidizing material, which can oxidize and classify odors and small particulate matter; the strong oxidizing material can be MnO2, TiO2, etc.

[0080] In this embodiment, the filter 400 has a rectangular structure, and a plurality of second limiting slots 215 are provided on the inner wall of the air duct cavity 214. The filter 400 is disposed on the inner wall of the air duct housing 210 through the plurality of second limiting slots 215. The filter 400 is located between the smoke inlet 211 and the smoke outlet 212 to achieve a second fine filtration of the oil fumes.

[0081] In this embodiment, the range hood 010 includes a fan module 500.

[0082] The fan module 500 generates negative pressure and is used to discharge the oil fumes that have been filtered twice from the air duct cavity 214.

[0083] In this embodiment, please refer to Figure 1 and Figure 2 The fan module 500 includes a fan 510 and a fan housing 520. The fan housing 520 includes an air inlet and an air outlet 521. The fan 510 is disposed inside the fan housing 520, and the air outlet of the fan 510 faces the air outlet 521. The outer shell of the fan 510 is disposed on the outer wall of the duct housing 210, and the air inlet is connected to the smoke outlet 212.

[0084] Specifically, the fan 510 includes a fan housing 511, a motor 512, and an impeller 513. The fan housing 511 has an internal cavity, and a fan opening 5111 and an outlet 5112 are provided on the fan housing 511. The outlet 5112 of the fan housing 511 is positioned opposite the air outlet 521 of the fan casing 520. Fan openings 5111 are provided at both the top and bottom of the fan housing 511. The impeller 513 is located within the cavity of the fan housing 511. The motor 512 is fixed to the bottom wall of the fan casing 520, and the output shaft of the motor 512 faces upwards, passing through the fan opening 5111 at the bottom of the fan housing 511 and being connected to the impeller 513 for transmission.

[0085] Understandably, the output shaft of motor 512 drives impeller 513 to rotate, and the rotation of impeller 513 generates airflow. The oil fumes are driven by the airflow to enter the fan box 511 from inlet 111 and are then discharged from outlet 5112.

[0086] In this embodiment, the range hood 010 includes a sensor 600.

[0087] The sensor 600 is used to monitor the wind speed at the monitoring point after the oil fume has been filtered by the filter 400.

[0088] In this embodiment, please refer to Figure 2 The sensor 600 is disposed on the inner wall of the air duct cavity 214. The sensor 600 is located below the filter 400 and between the filter 400 and the smoke outlet 212. The sensor 600 can be a wind speed detector or the like.

[0089] The sensor 600 can also monitor other operating conditions to control the self-cleaning equipment, such as pressure loss.

[0090] Understandably, the sensor 600 detects the wind speed at the monitoring point after the oil fumes have passed through the filter 400. The wind speed at the monitoring point is compared with the predetermined wind speed of the fan module 500 to determine the status of the filter 400. Specifically, when there is oil on the filter 400, the wind speed at the monitoring point will be lower than the predetermined wind speed of the fan module 500, requiring the cleaning component 700 to perform self-cleaning on the filter 400; when the wind speed at the monitoring point is equal to or greater than the predetermined wind speed, the filter 400 does not require cleaning.

[0091] In this embodiment, the range hood 010 includes a cleaning component 700.

[0092] The cleaning component 700 is used to self-clean the filter 400 and the filter structure.

[0093] In this embodiment, please refer to Figure 1 and Figure 2The cleaning component 700 is disposed within the air duct cavity 214 and close to the filter 400; the cleaning component 700 is disposed above the filter 400 and below the filter structure, so that the cleaning component 700 can dynamically clean both the filter 400 and the filter structure simultaneously.

[0094] Of course, in other embodiments, the cleaning component 700 is positioned close to and below the filter 400.

[0095] In one optional embodiment, the cleaning assembly 700 includes a drive member 710 and a heating structure 730, wherein the moving end of the drive member 710 is kinetically connected to the first end of the heating structure 730; the drive member 710 directly drives the heating structure 730 to rotate periodically, so that the heating structure 730 dynamically or statically cleans the filter 400. The heating structure 730 may be a heating rod with a heating element.

[0096] In this embodiment, please refer to Figure 3 and Figure 5 The cleaning component 700 includes a drive member 710, a push rod structure 720, and a heating structure 730; the moving end of the drive member 710 is connected to one end of the push rod structure 720, and the push rod structure 720 is rotatably disposed with respect to the air duct housing; the first end of the heating structure 730 is rotatably connected to the other end of the push rod structure 720, and the second end of the heating structure 730 is rotatably connected to the inner wall of the air duct housing 210.

[0097] Among them, the driving component 710 is a motor 512, and the moving end of the driving component 710 is provided with an output shaft.

[0098] It is understandable that the drive component 710 drives the push rod structure 720 to extend and retract, and the extension and retraction of the push rod structure 720 drives the heating structure 730 to rotate periodically.

[0099] In this embodiment, the drive member 710, the push rod structure 720 and the heating structure 730 are disposed in the clearance groove 231 of the clearance housing 230.

[0100] Specifically, please refer to Figure 3 and Figure 5The push rod structure 720 includes a sleeve 721, a worm gear structure, and a push rod 722. The push rod 722 is sleeved within the sleeve 721, with one end rotatably connected to the heating structure 730 and the other end connected to the worm gear structure. The sleeve 721 has a hollow stroke cavity inside. The push rod 722 is fitted onto the first end of the sleeve 721, and the worm gear structure is located at the second end. A connecting hole 7211 is provided on the outer shell of the first end of the sleeve 721, which is rotatably connected to the clearance housing 230 or other structures via a rotating shaft 741. The input end of the worm gear is connected to the output shaft of the drive component 710, and the moving end of the worm gear structure is connected to the other end of the push rod 722.

[0101] Specifically, the heating structure 730 is disposed within the clearance groove 231. The first end of the heating structure 730 is rotatably connected to the push rod 722, and the second end of the heating structure 730 is rotatably connected to the inner wall of the clearance housing 230. The heating structure 730 contains a heating element, which radiates heat to the filter 400 and the filter structure, softening and evaporating small particles such as grease.

[0102] Understandably, the output shaft at the moving end of the drive component 710 drives the push rod 722 to extend and retract within the sleeve 721 via a worm gear structure. Since the connecting hole 7211 of the sleeve 721 is rotatably connected to the clearance housing 230, and the second end of the heating structure 730 is rotatably connected to the inner wall of the clearance housing 230, under the limiting action of both, the extension and retraction of the push rod 722 causes the heating structure 730 to rotate periodically around the inner wall of the clearance housing 230. This configuration of the cleaning component 700 allows for dynamic recovery and intelligent control of the heating structure 730 through the push rod structure 720, thereby extending the service life of the cleaning component 700. Simultaneously, the retraction of the cleaning component 700 reduces the airflow resistance within the air duct cavity 214, lowering maintenance costs.

[0103] In this embodiment, please refer to Figures 3-5 The heating structure 730 includes a fixing part 740, a first heating rod 731, and at least one second heating rod 732. The fixing part 740 is disposed on the back plate 232 of the clearance housing 230; please refer to... Figure 4 A U-shaped groove is provided on one side of the fixing part 740, and at least one rotating shaft 741 is provided in the U-shaped groove. At least one first connecting shaft 7311 is provided at intervals along the first heating rod 731, and one end of the first heating rod 731 is rotatably connected to the push rod structure 720 via a second connecting shaft 7312. The first end of at least one second heating rod 732 is rotatably connected to the first heating rod 731 via at least one first connecting shaft 7311, and the second end of at least one second heating rod 732 is rotatably connected to the rotating shaft 741.

[0104] In this embodiment, the number of the second heating rod 732, the first connecting shaft 7311 and the rotating shaft 741 are set accordingly, and can be one, two, three, etc., and the number can be selected according to the actual size of the filter 400.

[0105] In this embodiment, heating elements are provided in the first heating rod 731 and the second heating rod 732. The heating elements radiate heat to the filter 400 and the filter structure, softening and evaporating small particles such as grease. Optionally, the heating element can be a resistance wire, which can generate heat by passing electricity through it.

[0106] It is worth mentioning that the first heating rod 731 and the second heating rod 732 can be made of high thermal conductivity materials, such as copper tubes; they can further radiate heat to the filter 400 and the filter structure, thereby softening and evaporating small particles such as grease.

[0107] Understandably, please refer to Figure 6 When the cleaning component 700 is in the recycling state, the heating structure 730 is located within the clearance groove 231. Please refer to... Figure 7 When the cleaning component 700 is in operation, the output shaft of the moving end of the drive component 710 drives the worm gear structure, and the worm gear structure drives the push rod 722 to extend out of the sleeve 721. The push rod 722 drives at least one second heating rod 732 to move and extend out of the clearance groove 231 through the first heating rod 731. At this time, the first heating rod 731 and the second heating rod 732 are in a fully extended state, and the first heating rod 731 and the second heating rod 732 completely cover one side surface of the filter 400 so that the heating structure 730 can completely clean the filter 400.

[0108] Furthermore, after the push rod 722 extends to the target position and the heating structure 730 is in a fully extended state, the heating elements in the first heating rod 731 and the second heating rod 732 are energized and heated to perform self-cleaning on the filter 400.

[0109] It is worth mentioning that the cleaning component 700 can perform dynamic or static cleaning.

[0110] The cleaning component 700 in the static cleaning state consists of: heating elements in the first heating rod 731 and the second heating rod 732 being energized and heated; the push rod 722 extending to the target position and remaining unchanged; and the first heating rod 731 and the second heating rod 732 performing static cleaning on the filter 400.

[0111] The cleaning assembly 700 in dynamic cleaning mode comprises: heating elements within the first heating rod 731 and the second heating rod 732 energized and heated; a driving member 710 performs periodic motion, driving a push rod 722 to extend and retract; the push rod 722, through the first heating rod 731, drives the second heating rod 732 to rotate synchronously around the pivot 741 of the fixed part 740; and the first heating rod 731 and the second heating rod 732 perform dynamic cleaning of the filter 400. It can be understood that the dynamic cleaning mode of the cleaning assembly 700 can expand the self-cleaning heating range of the filter 400 and the filter structure 300.

[0112] The working principle and process of the range hood 010 provided in this embodiment of the invention are as follows:

[0113] When the range hood is started (010), the fan module 500 exhausts the smoke. Under the negative pressure of the fan module 500, the smoke is filtered twice through the filter structure and filter element, and then discharged from the air outlet 521 of the fan module 500.

[0114] The sensor 600 monitors the wind speed at a monitoring point within the air duct cavity 214; when the sensor 600 detects that the wind speed at the monitoring point is less than the predetermined wind speed of the fan module 500, the cleaning component 700 operates; when the sensor 600 detects that the wind speed at the monitoring point is equal to or greater than the predetermined wind speed of the fan module 500, the cleaning component 700 does not operate.

[0115] Furthermore, when the sensor 600 detects that the wind speed at the monitoring point is less than the predetermined wind speed of the fan module 500, the output shaft of the moving end of the drive unit 710 drives the worm gear structure, and the worm gear structure drives the push rod 722 to extend out along the sleeve 721. The push rod 722 drives at least one second heating rod 732 to move and extend out of the clearance groove 231 through the first heating rod 731.

[0116] After the push rod 722 extends to the target position and the heating structure 730 is fully extended, the heating elements in the first heating rod 731 and the second heating rod 732 are energized and heated to perform self-cleaning on the filter 400. Simultaneously, dynamic cleaning and static cleaning can be selected according to the self-cleaning requirements.

[0117] The cleaning component 700 in the static cleaning state consists of: heating elements in the first heating rod 731 and the second heating rod 732 being energized and heated; the push rod 722 extending to the target position and remaining unchanged; and the first heating rod 731 and the second heating rod 732 simultaneously performing static cleaning on the filter 400 and the filter structure.

[0118] The cleaning component 700 in dynamic cleaning state consists of: heating elements in the first heating rod 731 and the second heating rod 732 being energized and heated; the driving member 710 performing periodic motion, driving the push rod 722 to extend and retract, and the push rod 722 driving the second heating rod 732 to rotate synchronously around the rotating shaft 741 of the fixed part 740 through the first heating rod 731; the first heating rod 731 and the second heating rod 732 synchronously perform dynamic cleaning on the filter 400 and the filter structure.

[0119] Depending on the usage time, the oil cup 220 can be pulled out of the air duct housing 210 to empty and clean the grease in the oil cup 220.

[0120] In summary, the range hood 010 provided in this embodiment of the invention, by setting a sensor that identifies the state of the filter 400 by monitoring the wind speed at the monitoring point, and by setting a cleaning component 700 that cleans the filter 400 according to the wind speed at the monitoring point, avoids the situation where the filter 400 is not cleaned in time, resulting in the accumulation of oil stains or the waste of energy caused by excessive cleaning, thus extending the service life of the filter 400, improving the filtration effect of the filter 400, reducing the air resistance in the air duct cavity 214, reducing maintenance costs, and improving user experience and energy efficiency.

[0121] Furthermore, the cleaning component 700 includes a push rod structure 720 and a drive component 710. The cleaning component 700 can achieve dynamic recovery and intelligent control of the heating structure 730 through the push rod structure 720, enabling both static and dynamic cleaning of the filter 400. This extends the service life of the cleaning component 700 and reduces maintenance costs. The dynamic cleaning state of the cleaning component 700 can expand the self-cleaning heating range of the filter 400 and the filter screen structure 300.

[0122] It is worth mentioning that this embodiment does not limit the above control scenario. The cleaning component 700 can be intelligently controlled according to the wind speed at the monitoring point, and the user can also control and adjust the cleaning component 700 according to the user's needs.

[0123] This invention provides a control method for a range hood 010, which is based on the range hood 010 provided in any of the foregoing embodiments, and specifically includes the following steps:

[0124] S1: The range hood starts at 010 and exhausts cooking fumes.

[0125] S2: Based on the wind speed at the monitored points, determine whether the conditions for starting the cleaning component 700 have been met;

[0126] S3: When the activation conditions of cleaning component 700 are met, cleaning component 700 cleans filter 400.

[0127] Specifically, step S2 also includes the following steps:

[0128] S21: Compare the wind speed at the monitoring point with the predetermined wind speed of the fan module 500. If the wind speed at the monitoring point is less than the predetermined wind speed of the fan module 500, the cleaning component 700 meets the start-up conditions.

[0129] S22: Compare the wind speed at the monitoring point with the predetermined wind speed of the fan module 500. If the wind speed at the monitoring point is equal to or greater than the predetermined wind speed of the fan module 500, the cleaning component 700 has not met the start-up conditions.

[0130] Specifically, step S3 also includes the following steps:

[0131] S31: When the starting conditions of the cleaning component 700 are met, the motion end of the drive member 710 drives the push rod structure 720 to extend.

[0132] S32: Determine whether the working conditions of the heating structure 730 have been met based on whether the push rod structure 720 has extended to the target position;

[0133] S33: When the operating conditions of the heating structure 730 are reached, determine whether the cleaning component 700 performs dynamic cleaning of the filter 400.

[0134] S34: When the cleaning component 700 performs dynamic cleaning, the moving end of the drive component 710 drives the push rod structure 720 to rotate periodically, so that the heating structure 730 dynamically cleans the filter 400.

[0135] S35: When the cleaning component 700 is not performing dynamic cleaning, the push rod structure 720 extends to the target position and remains unchanged so that the heating structure 730 statically cleans the filter 400.

[0136] In step S32, if the push rod structure 720 does not extend to the target position, the drive member 710 continuously pushes the push rod structure 720 until it extends to the target position. Also, please refer to... Figure 6 The extension action of the push rod structure 720 is as follows: the drive member 710 drives the worm gear structure, the worm gear structure drives the push rod 722 to extend out of the sleeve 721, the push rod 722 drives at least one second heating rod 732 to move and extend out of the clearance groove 231 through the first heating rod 731, and when the push rod 722 extends to the target position and the heating structure 730 is in the fully extended state, the push rod structure 720 is in the target position.

[0137] In step S32, when the heating structure 730 is working, the heating elements in the first heating rod 731 and the second heating rod 732 are energized and heated.

[0138] Please refer to Figure 7In step S34, the drive member 710 performs periodic motion, and the drive member 710 drives the push rod 722 to extend and retract. The push rod 722 drives the second heating rod 732 to rotate synchronously around the rotating shaft 741 of the fixed part 740 through the first heating rod 731. The first heating rod 731 and the second heating rod 732 perform dynamic cleaning of the filter 400.

[0139] Please refer to Figure 6 In step S35, the push rod 722 extends to the target position and remains unchanged, and the first heating rod 731 and the second heating rod 732 perform static cleaning on the filter 400.

[0140] It is worth mentioning that the cleaning component 700 can perform dynamic or static cleaning of the filter 400, so either step S34 or step S35 can be performed.

[0141] In summary, the control method provided by this embodiment of the invention identifies the state of the filter 400 by using a sensor to monitor the wind speed at the monitoring point; and cleans the filter 400 by the cleaning component 700 based on the wind speed at the monitoring point. This setup can meet the needs of the range hood 010 in different states, enabling the cleaning component 700 to self-clean according to the state of the filter 400, thereby avoiding the problem of oil accumulation caused by untimely cleaning of the filter 400 and the energy waste caused by excessive cleaning of the filter 400, reducing maintenance costs, improving user experience and energy efficiency; at the same time, it also extends the service life of the filter 400, improves the filtration effect of the filter 400, and thus reduces the airflow resistance in the air duct cavity 214.

[0142] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A range hood, characterized in that, include: Air duct module (200), wherein the air duct module (200) is provided with air duct cavity (214); A filter (400) is provided with multiple filter holes for filtering oil fumes, and the filter (400) is disposed inside the air duct cavity (214); A cleaning component (700) is disposed in the air duct cavity (214) and close to the filter (400). The cleaning component (700) performs self-cleaning on the filter (400) based on the wind speed at the monitoring point through the filter (400). The cleaning component (700) includes a driving member (710) and a heating structure (730). The moving end of the driving member (710) is connected to the first end of the heating structure (730) in a transmission connection. The driving member (710) drives the heating structure (730) to rotate periodically. The driving element (710) drives the heating structure (730) to dynamically or statically clean the filter (400). The heating structure (730) includes a first heating rod (731) and at least one second heating rod (732). The first end of the at least one second heating rod (732) is rotatably connected to the side wall of the first heating rod (731), and the second end of the at least one second heating rod (732) is rotatably connected to the inner wall of the air duct module (200). Heating elements are provided in the first heating rod (731) and the at least one second heating rod (732).

2. The range hood according to claim 1, characterized in that, The cleaning assembly (700) also includes a push rod structure (720), wherein the moving end of the drive member (710) is connected to one end of the push rod structure (720) in a transmission connection; The first end of the heating structure (730) is rotatably connected to the push rod structure (720), and the second end of the heating structure (730) is rotatably connected to the inner wall of the air duct module (200).

3. The range hood according to claim 2, characterized in that, The push rod structure (720) includes a sleeve (721), a worm gear structure, and a push rod (722). The push rod (722) is sleeved on one end of the sleeve (721), and the worm gear structure is provided on the other end. The sleeve (721) is rotatably connected to the air duct module (200). The input end of the worm gear structure is driven to the output shaft of the drive component (710), and the moving end of the worm gear structure is driven to the push rod (722).

4. The range hood according to claim 2, characterized in that, One end of the first heating rod (731) is rotatably connected to the push rod structure (720).

5. The range hood according to claim 4, characterized in that, The heating structure (730) further includes a fixing part (740), which is disposed on the inner wall of the air duct module (200); the fixing part (740) is provided with at least one rotating shaft (741), and the second end of the at least one second heating rod (732) is rotatably connected to the at least one rotating shaft (741); The moving end of the drive member (710) drives the push rod structure (720) to rotate periodically, so that the first heating rod (731) pushes the at least one second heating rod (732) to rotate periodically around the fixed part (740).

6. The range hood according to claim 1, characterized in that, The range hood (010) also includes a sensor (600) and a fan module (500). The sensor (600) is disposed in the air duct cavity (214) and below the filter (400). The sensor (600) is used to monitor the wind speed at the monitoring point after the oil fumes pass through the filter (400). The fan module (500) is connected to the duct module (200) and discharges oil fumes; The wind speed at the monitoring point is less than the predetermined wind speed of the fan module (500), and the cleaning component (700) self-cleans the filter (400).

7. A control method for a range hood, characterized in that, The range hood includes any one of claims 1-6; the control method includes the following steps: The range hood starts and exhausts the fumes. Based on the wind speed at the monitored points, determine whether the conditions for activating the cleaning component have been met; When the activation conditions of the cleaning component are met, the cleaning component cleans the filter.

8. The control method according to claim 7, characterized in that, The step of determining whether the activation conditions of the cleaning component have been met based on the monitored wind speed at the monitoring point includes: The wind speed at the monitoring point is compared with the predetermined wind speed of the fan module. If the wind speed at the monitoring point is less than the predetermined wind speed of the fan module, the cleaning component meets the activation condition. The wind speed at the monitoring point is compared with the predetermined wind speed of the fan module. If the wind speed at the monitoring point is equal to or greater than the predetermined wind speed of the fan module, the cleaning component has not met the activation conditions.

9. The control method according to claim 7, characterized in that, The cleaning component includes a push rod structure, the moving end of the drive member is connected to one end of the push rod structure, the push rod structure is rotatably disposed with the air duct housing, and the first end of the heating structure is rotatably connected to the other end of the push rod structure; When the activation conditions of the cleaning component are met, the step of the cleaning component cleaning the filter includes: When the cleaning component activation condition is met, the moving end of the drive unit drives the push rod structure to extend. Whether the working conditions of the heating structure are met depends on whether the push rod structure extends to the target position. When the operating conditions of the heating structure are met, it is determined whether the cleaning component should perform dynamic cleaning of the filter.

10. The control method according to claim 9, characterized in that, When the activation conditions of the cleaning component are met, the step of the cleaning component cleaning the filter further includes: When the cleaning component performs dynamic cleaning, the moving end of the drive unit drives the push rod structure to rotate periodically, so that the heating structure dynamically cleans the filter. When the cleaning component is not performing dynamic cleaning, the push rod structure extends to the target position and remains unchanged so that the heating structure statically cleans the filter.

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