Range hood and control method thereof

Abstract

The invention relates to a range hood and a control method thereof, and relates to the technical field of kitchen appliances. The range hood comprises an air duct module, a filter and a cleaning assembly, and the air duct module is provided with an air duct cavity; a plurality of filtering holes for filtering oil smoke are formed in the filter, and the filter is arranged in the air duct cavity; the cleaning assembly is arranged in the air duct cavity and is close to the filter, and the cleaning assembly conducts self-cleaning on the filter according to the air speed of a monitoring point passing through the filter. By arranging the cleaning assembly, the cleaning assembly performs self-cleaning on the filter according to the wind speed of a monitoring point; therefore, the cleaning assembly can conduct self-cleaning according to the state of the filter, the situation that oil dirt is accumulated due to the fact that the filter is not cleaned in time or energy consumption is wasted due to the fact that cleaning is too frequent is avoided, the service life of the filter is prolonged, the filtering effect of filtering is improved, air duct resistance in the air duct cavity is reduced, and the maintenance cost is reduced. And the user experience and the energy efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a range hood and a control method thereof. Background Art

[0002] When the range hood works for a long time, a lot of oil will accumulate on the oil net, affecting the air volume performance of the range hood, and it needs to be cleaned regularly by humans.

[0003] At present, the self-cleaning technology solutions for range hoods mainly focus on improving the filter material and regular cleaning, but have not effectively solved the problem of automatically adjusting the cleaning cycle according to the frequency of use and the user's eating habits. At the same time, regular cleaning has the following two problems: untimely cleaning leads to accumulation of oil stains; too frequent cleaning causes energy waste. Summary of the invention

[0004] The invention provides a range hood and a control method thereof, wherein a cleaning component of the range hood cleans a filter according to a wind speed at a monitoring 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] An air duct module, wherein the air duct module is provided with an air duct cavity;

[0008] A filter, wherein a plurality of filter holes for filtering oil smoke are provided on the filter, and the filter is arranged in the air duct cavity;

[0009] A cleaning component is arranged in the air duct cavity and close to the filter. The cleaning component self-cleans the filter according to the wind speed at the monitoring point passing through the filter.

[0010] Optionally, the cleaning component includes a driving member and a heating structure, and a moving end of the driving member is drivingly connected to a first end of the heating structure;

[0011] The driving member drives the heat generating structure so that the heat generating structure cleans the filter dynamically or statically.

[0012] Optionally, the cleaning assembly further comprises a push rod structure, and the moving end of the driving member is drivingly connected to one end of the push rod structure;

[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 structure and a push rod, the push rod is sleeved on one end of the sleeve, and the worm structure is arranged on the other end, and the sleeve is rotationally connected to the air duct module; the input end of the worm structure is transmission connected to the output shaft of the driving member, and the moving end of the worm structure is transmission connected to the push rod.

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

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

[0017] The first heating rod and at least one second heating rod are provided with heating elements.

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

[0019] The moving end of the driving member 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 further comprises a sensor and a fan module, wherein the sensor is arranged in the air duct cavity and below the filter, and the sensor is used to monitor the wind speed at the monitoring point after the oil smoke is filtered by the filter;

[0021] The fan module is connected with the air duct module and exhausts the oil smoke;

[0022] When the wind speed at the monitoring point is less than the preset wind speed of the fan module, the cleaning component self-cleans the filter.

[0023] In a second aspect, the present invention provides a control method for a range hood, including any of the range hoods described above; the control method comprises the following steps:

[0024] The range hood is started and the fumes are exhausted;

[0025] According to the wind speed at the monitoring point, determine whether the cleaning component startup conditions are met;

[0026] When the cleaning component start condition is reached, the cleaning component cleans the filter.

[0027] Optionally, the step of judging whether the cleaning component startup condition is met according to the monitored wind speed at the monitoring point includes:

[0028] The wind speed at the monitoring point is compared with the preset wind speed of the fan module. If the wind speed at the monitoring point is less than the preset wind speed of the fan module, the cleaning component reaches the cleaning component start-up condition.

[0029] The wind speed at the monitoring point is compared with the preset wind speed of the fan module. If the wind speed at the monitoring point is equal to or greater than the preset wind speed of the fan module, the cleaning component does not meet the cleaning component start-up condition.

[0030] Optionally, when the cleaning component start-up condition is reached, the step of the cleaning component cleaning the filter comprises:

[0031] When the cleaning component start-up condition is reached, the moving end of the driving member drives the push rod structure to extend;

[0032] Whether the working condition of the heating structure is met is determined according to whether the push rod structure is extended to the target position;

[0033] When the working condition of the heating structure is reached, it is determined whether the cleaning component dynamically cleans the filter.

[0034] Optionally, when the cleaning component start-up condition is reached, the step of the cleaning component cleaning the filter further includes:

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

[0036] When the cleaning component does not perform dynamic cleaning, the push rod structure extends to the target position and remains unchanged so that the heating structure can statically clean the filter.

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

[0038] By setting up a cleaning component, the cleaning component can self-clean the filter according to the wind speed at the monitoring point. In this way, the cleaning component can self-clean according to the status of the filter, avoiding the accumulation of oil and dirt due to untimely cleaning of the filter or energy waste due to too frequent cleaning, extending the service life of the filter, improving the filtering effect, reducing the air duct resistance in the air duct cavity, reducing maintenance costs, and improving user experience and energy efficiency.

[0039] Furthermore, the cleaning component includes a push rod structure and a driving member, and the cleaning component can realize dynamic recovery and intelligent control of the heating structure through the push rod structure to realize static cleaning and dynamic cleaning of the filter, thereby extending the service life of the cleaning component and reducing maintenance costs. Among them, the dynamic cleaning state of the cleaning component can expand the self-cleaning heating range of the filter and the filter structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

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

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

[0043] Figure 3 A schematic diagram of the structure of the cleaning component provided in this embodiment from a first viewing angle;

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

[0045] Figure 5 A schematic diagram of the structure of the cleaning component provided in this embodiment from a second viewing angle;

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

[0047] Figure 7 A schematic diagram of the cleaning component provided in this embodiment in a recycling state.

[0048] Icons: 010-range hood; 100-induction cooker module; 110-table; 111-inlet; 120-bottom shell; 121-first limit slot; 200-air duct module; 210-air duct housing; 211-smoke inlet; 212-smoke outlet; 213-opening; 214-air duct cavity; 215-second limit slot; 220-oil cup; 230-avoidance housing; 231-avoidance slot; 232-back plate; 300-filter structure; 400-filter; 500-fan module; 510-fan; 5 11-fan box; 5111-fan opening; 5112-export; 512-motor; 513-impeller; 520-fan housing; 521-air outlet; 600-sensing element; 700-cleaning component; 710-driving 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 DESCRIPTION

[0049] In response to the problems raised in the background technology, the present invention provides a range hood and a control method thereof, wherein a cleaning component cleans the filter according to the wind speed at a monitoring point, thereby improving the problem of oil accumulation due to untimely cleaning of the filter or energy waste caused by too frequent cleaning.

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0055] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

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

[0057] The present 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, thereby avoiding the situation where the filter 400 is not cleaned in time and causes oil accumulation or the filter 400 is cleaned too frequently and causes energy waste, thereby extending the service life of the filter 400, reducing maintenance costs, and improving user experience and energy efficiency.

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

[0059] The air duct module 200 is provided with an air duct cavity 214;

[0060] The filter 400 is provided with a plurality of filter holes for filtering oil smoke, and the filter 400 is disposed in the air duct cavity 214;

[0061] The 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 according to the wind speed at the monitoring point.

[0062] It is understandable that when the oil smoke passes through the filter 400, the filter holes of the filter 400 will finely filter and adsorb the grease and particulate matter in the oil smoke; if the range hood 010 works for a long time, the filter holes of the filter 400 will be blocked by grease, thereby affecting the wind speed after passing through the filter 400, and making the wind speed at the monitoring point after passing through the filter 400 slow down due to obstruction. Therefore, by setting the cleaning component 700, the cleaning component 700 self-cleans the filter 400 according to the wind speed at the monitoring point; in this way, the cleaning component 700 can self-clean according to the state of the filter 400, avoiding the situation where the filter 400 is not cleaned in time, resulting in the accumulation of oil stains, or the cleaning is too frequent, resulting in energy waste, extending the service life of the filter 400, improving the filtering effect of the filter 400, reducing the wind duct resistance in the air duct cavity 214, reducing maintenance costs, and improving 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 table top 110 and a bottom shell 120 disposed at the bottom of the table top 110 ; wherein an inlet 111 is disposed on the table top 110 , and the bottom shell 120 forms an air inlet cavity corresponding to the inlet 111 .

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

[0066] It is understandable that the induction cooker module 100 is used to heat the cookware, and the food in the cookware generates oil smoke when heated. Under the action of the fan module 500, the oil smoke enters the air duct housing 210 along the inlet 111, the air inlet cavity and the smoke inlet 211 in sequence.

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

[0068] In this embodiment, please refer to Figure 1 and Figure 2 The air duct module 200 includes an air duct shell 210 and an oil cup 220; the air duct shell 210 is provided with a smoke inlet 211, a smoke outlet 212, an opening 213 and an air duct cavity 214, the top of the air duct shell 210 is provided with a smoke inlet 211 for the entry of oil smoke, the bottom of the air duct shell 210 is provided with an opening 213, the side wall of the air duct shell 210 is provided with a smoke outlet 212 for the oil smoke to be discharged into the fan module 500, and the air duct cavity 214 is connected with 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 arranged at the bottom of the air duct housing 210 and below the opening 213, and the air duct housing 210 is slidably arranged with the air duct housing 210. It can be understood that the cleaning component 700 performs self-cleaning on the filter 400 and the filter screen by heating, and the small particles such as grease filtered and adsorbed by the filter 400 and the filter screen drip into the oil cup 220 arranged at the bottom after being heated; and the oil cup 220 can also be pulled out of the air duct housing 210, so as to facilitate the cleaning of the grease collected in the oil cup 220.

[0070] The air duct housing 210 is a rectangular straight-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 air duct housing 210 is also provided with an avoidance housing 230 arranged relative to the cleaning assembly 700, and the avoidance housing 230 is provided with an avoidance groove 231 communicating with the air duct cavity 214; wherein the avoidance housing 230 is a rectangular housing structure, and a back plate 232 is provided at the back of the avoidance housing 230. It is understandable that when the cleaning assembly 700 is not working, the cleaning assembly 700 can be stored in the avoidance groove 231 to avoid the cleaning assembly 700 from being exposed to oil smoke for a long time, thereby extending the service life of the self-cleaning device.

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

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

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

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

[0076] The filter structure 300 may be a structure with a metal filter.

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

[0078] The filter 400 is used for a second fine filtration of grease and particulate matter in the oil smoke.

[0079] In this embodiment, please refer to Figure 1 and Figure 2 The filter 400 is provided with a plurality of filter holes for filtering oil smoke; the filter 400 can be a porous device made of metal material or high temperature resistant material. The inner and outer surfaces of the filter 400 are sprayed with a strong oxidizing material, which can oxidize and classify odor and small molecular particles; the strong oxidizing material can be MnO2, TiO2, etc.

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

[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 smoke in the air duct cavity 214 after being filtered twice.

[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 arranged in the fan housing 520, and the air outlet end of the fan 510 faces the air outlet 521. The fan 510 shell is arranged on the outer wall of the air duct housing 210, and the air inlet is connected to the smoke outlet 212.

[0084] Specifically, the fan 510 includes a fan box 511, a motor 512 and an impeller 513; a cavity is formed inside the fan box 511, and a fan opening 5111 and an outlet 5112 are provided on the fan box 511. The outlet 5112 of the fan box 511 is arranged relative to the air outlet 521 of the fan housing 520. The fan openings 5111 are arranged at the top and the bottom of the fan box 511, and the impeller 513 is located in the cavity of the fan box 511. The motor 512 is fixed to the bottom wall of the fan housing 520, and the output shaft of the motor 512 is arranged upward and passes through the fan opening 5111 at the bottom of the fan box 511 and is in transmission connection with the impeller 513.

[0085] It can be understood that the output shaft of the motor 512 drives the impeller 513 to rotate, and the rotation of the impeller 513 generates airflow. Driven by the airflow, the oil smoke enters the fan box 511 from the inlet 111 and is then discharged from the outlet 5112.

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

[0087] The sensing element 600 is used to monitor the wind speed at the monitoring point after the oil smoke is filtered by the filter 400.

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

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

[0090] It is understandable that the sensing element 600 detects the wind speed at the monitoring point after the oil smoke is filtered by the filter 400, and the wind speed at the monitoring point is compared with the predetermined wind speed of the fan module 500, so as to know the state of the filter 400. When there is oil on the filter 400, the wind speed at the monitoring point is lower than the predetermined wind speed of the fan module 500, and the cleaning component 700 is required to self-clean 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 need to be cleaned.

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

[0092] The cleaning assembly 700 is used for self-cleaning the filter 400 and the filter structure.

[0093] In this embodiment, please refer to Figure 1 and Figure 2The cleaning component 700 is disposed in the air duct cavity 214 and close to the filter 400; the cleaning component 700 is disposed above the filter 400 and located at the lower side of the filter structure, so that the cleaning component 700 dynamically cleans the filter 400 and the filter structure at the same time.

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

[0095] In an optional embodiment, the cleaning assembly 700 includes a driving member 710 and a heating structure 730, wherein the moving end of the driving member 710 is in driving connection with the first end of the heating structure 730; the driving member 710 directly drives the heating structure 730 to rotate periodically, so that the heating structure 730 dynamically cleans 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 driving member 710, a push rod structure 720 and a heating structure 730; the moving end of the driving member 710 is transmission-connected to one end of the push rod structure 720, and the push rod structure 720 is rotatably arranged with 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] The driving member 710 is a motor 512 , and an output shaft is rotatably provided at the moving end of the driving member 710 .

[0098] It can be understood that the driving member 710 drives the push rod structure 720 to extend and retract, and the heating structure 730 is driven to rotate periodically through the extension and retraction action of the push rod structure 720.

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

[0100] For details, please refer to Figure 3 and Figure 5The push rod structure 720 includes a sleeve 721, a worm structure and a push rod 722. The push rod 722 is sleeved in the sleeve 721, one end of the push rod 722 is rotationally connected to the heating structure 730, and the other end is transmission-connected to the worm structure. A hollow stroke cavity is provided inside the sleeve 721, the first end of the sleeve 721 is sleeved with the push rod 722, the second end of the sleeve 721 is provided with a worm structure, and a connecting hole 7211 is provided on the first end shell of the sleeve 721, and the connecting hole 7211 is rotationally connected to the avoidance shell 230 or other structures through a rotating shaft 741. The input end of the worm is transmission-connected to the output shaft of the driving member 710, and the moving end of the worm structure is transmission-connected to the other end of the push rod 722.

[0101] Specifically, the heating structure 730 is disposed in the avoidance 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 avoidance housing 230. A heating element is disposed in the heating structure 730, and the heating element generates heat to radiate heat to the filter 400 and the filter structure to soften and evaporate small particles such as grease.

[0102] It is understandable that the output shaft of the moving end of the driving member 710 drives the push rod 722 to extend and retract in the sleeve 721 through the worm structure; since the connection hole 7211 of the sleeve 721 is rotatably connected to the avoidance shell 230, and the second end of the heating structure 730 is rotatably connected to the inner wall of the avoidance shell 230, under the limiting action of the two, the extension and retraction of the push rod 722 drives the heating structure 730 to rotate periodically around the inner wall of the avoidance shell 230. The cleaning component 700 configured in this way can realize the 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; at the same time, the cleaning component 700 shrinks, reducing the air duct resistance in the air duct cavity 214 and reducing the maintenance cost.

[0103] In this embodiment, please refer to Figure 3-Figure 5 The heating structure 730 includes a fixing portion 740, a first heating rod 731 and at least one second heating rod 732. The fixing portion 740 is disposed on the back plate 232 of the avoidance housing 230; Figure 4 A U-shaped groove is provided on one side of the fixing portion 740, and at least one rotating shaft 741 is provided in the U-shaped groove. Among them, at least one first connecting shaft 7311 is arranged 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 through the second connecting shaft 7312. Among them, the first end of at least one second heating rod 732 is rotatably connected to the first heating rod 731 through 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 is set correspondingly, 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 generate heat to radiate heat to the filter 400 and the filter structure to soften and evaporate small particles such as grease. Optionally, the heating element may be a resistance wire that can generate heat by energizing 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, etc.; they can further radiate heat to the filter 400 and the filtering 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 recovery state, the heating structure 730 is located in the avoidance groove 231. Figure 7 When the cleaning assembly 700 is in working state, the output shaft of the moving end of the driving member 710 drives the worm structure, and the worm structure drives the push rod 722 to extend along the sleeve 721, and the push rod 722 drives at least one second heating rod 732 to move and extend out of the avoidance 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 is extended 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 powered on and heated to perform self-cleaning on the filter 400 .

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

[0110] Among them, the cleaning component 700 in the static cleaning state is: the heating elements in the first heating rod 731 and the second heating rod 732 are powered on for heating; the push rod 722 is extended 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.

[0111] The cleaning assembly 700 in the dynamic cleaning state is as follows: the heating elements in the first heating rod 731 and the second heating rod 732 are powered on for heating; the driving member 710 performs periodic motion, the driving 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 fixing part 740 through the first heating rod 731, and the first heating rod 731 and the second heating rod 732 dynamically clean the filter 400. It can be understood that the dynamic cleaning state 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 the embodiment of the present invention are as follows:

[0113] The range hood 010 is started, and the fan module 500 starts exhausting smoke. Under the negative pressure of the fan module 500 , the smoke is filtered twice by the filter structure and the filter element in sequence, and then the smoke is discharged from the air outlet 521 of the fan module 500 .

[0114] The sensing element 600 monitors the wind speed at the monitoring point in the air duct cavity 214; when the sensing element 600 detects that the wind speed at the monitoring point is less than the preset wind speed of the fan module 500, the cleaning component 700 works; when the sensing element 600 detects that the wind speed at the monitoring point is equal to or greater than the preset wind speed of the fan module 500, the cleaning component 700 does not work.

[0115] Further, when the sensing component 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 driving component 710 drives the worm structure, and the worm structure drives the push rod 722 to extend along the sleeve 721, and the push rod 722 drives at least one second heating rod 732 to move and extend out of the avoidance groove 231 through the first heating rod 731.

[0116] After the push rod 722 is extended 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 powered on and heated to perform self-cleaning on the filter 400. At the same time, dynamic cleaning and static cleaning are selected according to the self-cleaning requirements.

[0117] Among them, the cleaning component 700 in the static cleaning state is: the heating elements in the first heating rod 731 and the second heating rod 732 are powered on for heating; the push rod 722 is extended to the target position without changing, and the first heating rod 731 and the second heating rod 732 perform static cleaning on the filter 400 and the filtering structure simultaneously.

[0118] Among them, the cleaning component 700 in the dynamic cleaning state is: the heating elements in the first heating rod 731 and the second heating rod 732 are powered on and heated; the driving member 710 performs periodic motion, the driving member 710 drives the push rod 722 to extend and retract, and 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, and the first heating rod 731 and the second heating rod 732 synchronously perform dynamic cleaning on the filter 400 and the filtering structure.

[0119] According to the usage time, the oil cup 220 can be pulled out of the air duct housing 210, and the grease in the oil cup 220 can be poured out and cleaned.

[0120] In summary, the range hood 010 provided in the embodiment of the present invention is provided with a sensor, and the sensor identifies the state of the filter 400 by monitoring the wind speed at the monitoring point; and is provided with a cleaning component 700, and the cleaning component 700 cleans the filter 400 according to the wind speed at the monitoring point, thereby avoiding the situation where the filter 400 is not cleaned in time and causes oil accumulation or the filter 400 is cleaned too frequently and causes energy waste, thereby extending the service life of the filter 400, improving the filtering effect of the filter 400, reducing the air duct resistance in the air duct cavity 214, reducing maintenance costs, and improving user experience and energy efficiency.

[0121] Furthermore, the cleaning assembly 700 includes a push rod structure 720 and a driving member 710. The cleaning assembly 700 can realize dynamic recovery and intelligent control of the heating structure 730 through the push rod structure 720 to realize static cleaning and dynamic cleaning of the filter 400, thereby extending the service life of the cleaning assembly 700 and reducing maintenance costs. The dynamic cleaning state of the cleaning assembly 700 can expand the self-cleaning heating range of the filter 400 and the filter screen structure 300.

[0122] It is worth mentioning that the present embodiment does not limit the above control scenarios, and 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 user needs.

[0123] An embodiment of the present invention provides a control method for a range hood 010, which is based on the range hood 010 provided by any of the above embodiments and specifically includes the following steps:

[0124] S1: The range hood 010 starts and exhausts the fumes;

[0125] S2: judging whether the start-up condition of the cleaning component 700 is met according to the wind speed at the monitoring point;

[0126] S3 : When the cleaning component 700 start condition is reached, the cleaning component 700 cleans the filter 400 .

[0127] Wherein, step S2 specifically further 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 starting condition of the cleaning component 700.

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

[0130] Wherein, step S3 specifically further includes the following steps:

[0131] S31: When the starting condition of the cleaning assembly 700 is reached, the moving end of the driving member 710 drives the push rod structure 720 to extend;

[0132] S32: judging whether the working condition of the heating structure 730 is met according to whether the push rod structure 720 is extended to the target position;

[0133] S33: When the working condition of the heating structure 730 is reached, it is determined whether the cleaning component 700 performs dynamic cleaning on the filter 400.

[0134] S34: When the cleaning assembly 700 performs dynamic cleaning, the moving end of the driving member 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 assembly 700 does not perform 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 has not been extended to the target position, the driving member 710 continues to push the push rod structure 720 until the push rod structure 720 is extended to the target position. Figure 6 The extension action of the push rod structure 720 is as follows: the driving member 710 drives the worm structure, the worm structure drives the push rod 722 to extend along the sleeve 721, the push rod 722 drives at least one second heating rod 732 to move and extend out of the avoidance groove 231 through the first heating rod 731, and when the push rod 722 extends to the target position and makes the heating structure 730 in a fully extended state, the push rod structure 720 is at the target position.

[0137] In step S32 , the heating structure 730 works, and the heating elements in the first heating rod 731 and the second heating rod 732 are powered on for heating.

[0138] Please refer to Figure 7In step S34, the driving member 710 performs periodic motion, the driving 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 fixing part 740 through the first heating rod 731, and the first heating rod 731 and the second heating rod 732 dynamically clean the filter 400.

[0139] Please refer to Figure 6 In step S35 , the push rod 722 is extended 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 cleaning or static cleaning on the filter 400, so either step S34 or step S35 can be performed.

[0141] In summary, the control method provided by the embodiment of the present invention uses the sensor to identify the state of the filter 400 by monitoring the wind speed at the monitoring point; and uses the cleaning component 700 to clean the filter 400 according to the wind speed at the monitoring point. This setting can meet the needs of different states of the range hood 010, so that the cleaning component 700 can perform self-cleaning according to the state of the filter 400, thereby avoiding the problem of oil accumulation caused by untimely cleaning of the filter 400 and energy waste caused by too frequent 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 filtering effect of the filter 400, and reduces the wind duct resistance in the wind duct cavity 214.

[0142] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A range hood, characterized in that: include: An air duct module (200), wherein the air duct module (200) is provided with an air duct cavity (214); A filter (400), wherein the filter (400) is provided with a plurality of filter holes for filtering oil smoke, and the filter (400) is arranged in the air duct cavity (214); A cleaning component (700), wherein the cleaning component (700) is disposed in the air duct cavity (214) and close to the filter (400), and the cleaning component (700) performs self-cleaning on the filter (400) according to the wind speed at a monitoring point passing through the filter (400).

2. The range hood according to claim 1, characterized in that: The cleaning assembly (700) comprises a driving member (710) and a heating structure (730), wherein a moving end of the driving member (710) is drivingly connected to a first end of the heating structure (730); The driving member (710) drives the heat-generating structure (730) so that the heat-generating structure (730) cleans the filter (400) dynamically or statically.

3. The range hood according to claim 2, characterized in that: The cleaning assembly (700) further comprises a push rod structure (720), and the moving end of the driving member (710) is drivingly connected to one end of the push rod structure (720); 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).

4. The range hood according to claim 3, characterized in that: The push rod structure (720) includes a sleeve (721), a worm structure and a push rod (722); the push rod (722) is sleeved on one end of the sleeve (721), and the worm structure is arranged on the other end; the sleeve (721) is rotationally connected to the air duct module (200); the input end of the worm structure is transmission-connected to the output shaft of the driving member (710), and the moving end of the worm structure is transmission-connected to the push rod (722).

5. The range hood according to claim 3, characterized in that: The heating structure (730) comprises a first heating rod (731) and at least one second heating rod (732), wherein a first end of the at least one second heating rod (732) is rotatably connected to a side wall of the first heating rod (731), and a second end of the at least one second heating rod (732) is rotatably connected to an inner wall of the air duct module (200); One end of the first heating rod (731) is rotatably connected to the push rod structure (720); The first heating rod (731) and the at least one second heating rod (732) are provided with heating elements.

6. The range hood according to claim 5, characterized in that: The heating structure (730) further comprises a fixing portion (740), wherein the fixing portion (740) is arranged on the inner wall of the air duct module (200); at least one rotating shaft (741) is arranged on the fixing portion (740), 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 driving 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 fixing portion (740).

7. The range hood according to claim 1, characterized in that: The range hood (010) further comprises a sensor (600) and a fan module (500), wherein the sensor (600) is arranged in the air duct cavity (214) and below the filter (400), and the sensor (600) is used to monitor the wind speed at a monitoring point after the oil smoke is filtered by the filter (400); The fan module (500) is in communication with the air duct module (200) and discharges oil smoke; 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).

8. A method for controlling a range hood, characterized in that: The range hood comprises any one of claims 1 to 7; the control method comprises the following steps: The range hood is started and the fumes are discharged outside; Determining whether the cleaning component startup condition is met based on the monitored wind speed at the monitoring point; When the cleaning component start-up condition is reached, the cleaning component cleans the filter.

9. The control method according to claim 8, characterized in that: The step of determining whether the cleaning component startup condition is met according to the monitored wind speed at the monitoring point comprises: 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 reaches the starting condition of the cleaning component; The wind speed at the monitoring point is compared with the preset wind speed of the fan module. If the wind speed at the monitoring point is equal to or greater than the preset wind speed of the fan module, the cleaning component does not meet the cleaning component start-up condition.

10. The control method according to claim 8, characterized in that: When the cleaning component start-up condition is reached, the step of the cleaning component cleaning the filter comprises: When the cleaning component start-up condition is met, the moving end of the driving member drives the push rod structure to extend; Determining whether the working condition of the heating structure is met according to whether the push rod structure is extended to the target position; When the working condition of the heating structure is reached, it is determined whether the cleaning component dynamically cleans the filter.

11. The control method according to claim 10, characterized in that: When the cleaning component start-up condition is reached, the step of the cleaning component cleaning the filter further includes: When the cleaning assembly performs dynamic cleaning, the moving end of the driving member drives the push rod structure to rotate periodically, so that the heating structure dynamically cleans the filter; When the cleaning component does not perform dynamic cleaning, the push rod structure extends to a target position and remains unchanged so that the heating structure can statically clean the filter.

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